HomeMy WebLinkAbout8.2 Attch 5 Exh B Draft SEIR Moller Ranch - Moller Creek Culvert Replacement ProjectMoller Ranch /
Moller Creek Culvert
Replacement Project
City File #PLPA 2011-0003
Draft Supplemental
Environmental Impact Report
SCH# 2005052146
Lead Agency:
City of Dublin
Prepared By:
Jerry Haag, Urban Planner
September 2012
Table of Contents
1.0
Project Summary..........................................................................................................1-1
1.1
Introduction...................................................................................................................1-1
1.2
Summary of Project Description.................................................................................1-1
1.3
Summary of Environmental Issues............................................................................1-2
1.4
Summary of Impacts and Mitigation Measures.......................................................1-2
1.5
Summary of Alternatives.............................................................................................1-3
1.6
Areas of Known Controversy......................................................................................1-4
2.0
Introduction.....................................................................................................................
2
2.1
EIR Requirement..............................................................................................................
2
2.2
Scope of Supplemental DSEIR.......................................................................................
3
2.3
Legal Basis of DSEIR........................................................................................................
4
2.4
Organization of DSEIR....................................................................................................
5
2.5
DSEIR Review Process....................................................................................................
5
3.0
Project Characteristics....................................................................................................
7
3.1
Project Location................................................................................................................
7
3.2
Project Area Features.......................................................................................................
7
3.3
Prior Planning Approvals............................................................................................... 8
3.4
Project Applications.......................................................................................................12
3.5
Project Objectives..........................................................................................................17
3.6
Future Actions of the DSEIR........................................................................................18
4.0
Environmental Analysis.............................................................................................. 32
4.1
Traffic and Transportation............................................................................................ 33
4.2
Biological Resources...................................................................................................... 84
4.3
Air Quality....................................................................................................................143
5.0
Alternatives to the Proposed Project.......................................................................154
5.1
Alternatives Identified in the ED EIR.......................................................................155
5.2
Alternatives Identified in the 2007 DSEIR................................................................158
5.3
Alternatives Identified in the 2012 DSEIR................................................................156
5.4
Environmentally Superior Alternative.....................................................................161
6.0
Required CEQA Discussion.....................................................................................162
6.1
Cumulative Impacts....................................................................................................162
6.2
Significant and Unavoidable Impacts.......................................................................163
7.0
Organizations and Persons Consulted....................................................................164
7.1
Persons and Organizations.........................................................................................164
7.2
References.....................................................................................................................
164
8.0
Appendices...................................................................................................................171
Appendix8.1 Initial Study..................................................................................................172
Appendix 8.2 Notice of Preparation..................................................................................173
Appendix8.3 Responses to NOP.......................................................................................174
Appendix 8.4 City Council Resolution No. 53-93...........................................................175
Appendix 8.5 City Council Resolution No. 58-07...........................................................176
Appendix 8.6 Traffic Impact Analysis (plus attached CD)............................................185
Appendix 8.7 Moller Ranch Biological Assessment.......................................................186
Appendix 8.8 Moller Creek Culvert Biological Assessment..........................................186
Appendix8.9 Air Quality Data..........................................................................................186
List of Tables
Table 1.1
Summary of Supplemental Imapcts / Mitigations .....................
II-1
Table 3.1
Existing v. Proposed General Plan Land Uses .............................14
Table 3.2
2007 Approved Land Uses v. Current Request ...........................15
Table 4.1-1.
Existing Intersection LOS Summary .............................................
38
Table 4.1-2.
Proejct Trip Generation...................................................................
50
Table 4.1-3.
Existing Plus Project LOS Summary .............................................
52
Table 4.1-4.
Near -Term Intersection LOS Summary ........................................
57
Table 4.1-5.
Long -Term LOS Summary.............................................................
61
Table 4.2-1.
Special -Status Plant Species..........................................................130
Table 4.2-2.
Special -Status Wildlife Species.....................................................135
Table 4.3-1.
Relevant California and National Air Standards ......................145
Table 4.3-2.
Highest Measured Air Pollutants................................................146
Table 4.3-3.
Air Quality Significance Thresholds...........................................149
Table 4.3-4.
Construction Period Emissions....................................................151
Table 4.3-5.
Daily Pollutant Operational Emissions......................................152
Table 4.3-6.
Annual Air Pollutant Emissions..................................................152
Table 5.1.
Alternative 2 v. Proposed Project Trips......................................157
Table 5.2.
Alternative 3 v. Proposed Project Trips......................................159
Table 5.3.
Alternative 5 v. Proposed Project Trips......................................160
List of Exhibits
Exhibit 3.1
Regional Location.........................................................................19
Exhibit3.2
Site Context....................................................................................
20
Exhibit 3.3
Culvert Replacement Location ....................................................
21
Exhibit 3.4
Existing General Plan Land Use Designations .........................
22
Exhibit 3.5
Existing EDSP Land Use Designations ......................................
23
Exhibit 3.6.
Preliminary Culvert Design.........................................................
24
Exhibit 3.7
Existing Stage 1 Development Plan ............................................
25
Exhibit 3.8
Preliminary Grading Plan............................................................
26
Exhibit 3.9
Proposed General Plan Land Use Designations .......................
27
Exhibit 3.10
Proposed EDSP Land Use Designations ....................................
28
Exhibit 3.11a
Proposed Stage 1 Development Plan .........................................
25
Exhibit 3.11b
Proposed Stage 2 Development Plan .........................................
26
Exhibit 3.12
Proposed Vesting Tentative Map ...............................................
27
Exhibit 4.1-1
Existing Lane Geometry and Traffic Control ............................
76
Exhibit 4.1-2
Existing Peak Hour Turning Movement Volumes ...................
77
Exhibit 4.1-3
Existing Roadway Volumes........................................................
78
Exhibit 4.1-4
Project Generated Traffic Volumes .............................................
79
Exhibit 4.1-5.
Existing Plus Proposed Traffic Volumes ...................................
80
Exhibit 4.1-6.
Existing Plus Project Roadway Segment Volumes ..................
81
Exhibit 4.1-7.
Near -Term Plus Project Turning Movement Volumes............
82
Exhibit 4.1-8.
Long -Term + Project Peak Turning Movement Volumes .......
83
Exhibit 4.2-1.
Moller Ranch Habitat Map........................................................139
Exhibit 4.2-2.
Moller Ranch Special -Status Plant Species..............................140
Exhibit 4.2-3.
Moller Ranch Special -Status Wildlife Species .........................141
Exhibit 4.2-4.
Moller Creek Vegetation Communities...................................142
1.0 Proiect Sum
1.1 Introduction
This chapter consists of a summary of the proposed project, a list of environmental
issues to be resolved and a summary identification of each environmental impact
and associated mitigation measure.
This summary should not be relied on for a thorough description of the details of the
project, its individual impacts and mitigation requirements. A discussion of the
applicability of the California Environmental Quality Act to the proposed project is
outlined in Chapter 2 as well as the history of previous EIRs within the project area.
Chapter 3 contains a detailed discussion of the proposed project. Chapter 4 includes
an analysis of project impacts and mitigation measures. Chapter 5 provides a range
of alternatives to the proposed project as required by CEQA and a discussion of each
alternative. Chapter 6 contains all other CEQA-mandated sections. Finally, Chapter
7 includes the names of the DSEIR preparers, individuals and agencies contacted in
the preparation of this document and references. Technical appendices are included
as Chapter 8.
1.2 Summary of Project Description
Project location. The project is located in the northern area of the Eastern Extended
Planning area of the City of Dublin as identified in the Dublin General Plan. More
specifically, the Moller Ranch portion of the project area is located on the east side of
Tassajara Road and north of the Fallon Crossing property. The Alameda County
boundary line with Contra Costa County forms the northerly boundary of the project,
The Moller Creek replacement culvert is located south and west of the Moller Ranch
property.
Moller Ranch project. The proposed project would affect the 226.3-acre Moller Ranch
project site. At buildout, the Moller property would contain up to 382 single-family
detached dwelling units on lots of various sizes within an area of approximately 79.6
acres of the site. In addition to single-family dwelling units, the project would be
developed with an approximately 1.1-acre neighborhood park, 1.2 acres of Semi -Public
land use including trails and a staging area, infrastructure, and a system of bio-
retention cells for storm water pollution control. Approximately, 136.8 acres of the site
would be zoned as Rural Residential/Agriculture and remain as permanently
undeveloped open space. Approximately 7.6 acres of the site would be designated as
Open Space. Open space areas would be owned and maintained by a combination of a
proposed homeowners' association and a GHAD (geologic hazards assessment district).
The applicant for Moller Ranch project is Braddock & Logan Services.
Moller Creek culvert replacement. The project would also include the replacement of an
existing 50-year old Tassajara Road culvert over Moller Creek with a new culvert
structure. This portion of the project is being proposed by the City of Dublin.
In anticipation of local and regional population growth and residential development
and increased use of Tassajara Road included in the Dublin General Plan and adjacent
jurisdictions, the Tassajara Road is proposed to be eventually widened from two lanes
(current configuration) to six lanes (ultimate width). Currently Tassajara Road crosses
over Moller Creek over a corrugated metal pipe culvert approximately 9 feet in
diameter and with a length of 140 feet. Current conditions of Moller Creek include
incised creek banks, a steep longitudinal profile, and bank instability progressing
through the Tassajara Road crossing. The current culvert does not allow any wildlife
passage on Moller Creek across Tassajara Road as a drop of over 9 feet exists on the
downstream end of the culvert.
The culvert replacement would include a realignment of Moller Creek in the described
location along with energy dissipating features, elimination of fish barriers and
inclusion of wildlife paths through the arched culvert. The arched culvert is designed
with a length of approximately 230 feet and a 26-foot span. The design is proposed to
include a series of cobble and boulder weirs within the culvert designed to
accommodate fish passage and benched edges designed for wildlife access along Moller
Creek and under Tassajara Road. Proposed actions would also align and grade portions
of Moller Creek and its banks both upstream and downstream of the new arched
culvert. Bioengineered erosion protection measures would be installed along the banks
and within the creek channel. Additionally the proposed culvert would be designed to
allow for accommodation of a 100-year flood under Tassajara Road.
1.3 Summary of Environmental Issues
As provided by the California Environmental Quality Act statues and implementing
Guidelines, the focus of this Draft Supplemental EIR (DSEIR) will be on changed
environmental conditions contained in the 1993 Eastern Dublin EIR and the 2007
Casamira Valley SEIR. These issues include those identified in the Initial Study and
responses from other public agencies received in response to the Notice of
Preparation issued by the City of Dublin. These areas of environmental concern
include:
• Transportation and Transportation
• Biological Resources
• Air Quality
1.4 Summary of Supplemental Impacts and Mitigation Measures
Each potentially significant impact and associated mitigation measure (if required)
identified in this DSEIR is summarized on Table 1.1. The summary chart has been
organized to correspond with the more detailed supplemental impact and
mitigation measure discussion found in Chapter 4. Table 1.1 is arranged in three
columns. The first column identifies supplemental environmental impacts by topic
area and level of impact(i.e. significant impact, less -than -significant impact or no
impact) prior to implementation of any mitigation measures. The second column
includes supplemental mitigation measures. The third and final column identifies
the level of significance after implementation of each mitigation measure.
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 1- 2
City of Dublin September 2012
For a complete description of the environmental setting, summary of impacts from
previous EIRs, supplemental impacts associated with this proposed Project and
supplemental mitigation measures, refer to Chapter 4 of this DSEIR.
1.5 Summary of Alternatives
The DSEIR analyzes four new alternatives in addition to those previously
considered in the Eastern Dublin EIR. These are: 1) a "no project/no development"
alternative; 2) a "no project/ development under existing ECAP land use regulations
within the unincorporated portion of Alameda County" alternative; 3) a large lot
development alternative; 4) an attached housing alternative.
These alternatives are detailed and analyzed in Chapter 5 of the DSEIR.
1.5 Areas of Known Controversy
No know areas of controversy exist with respect to this project.
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 1- 3
City of Dublin September 2012
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2.0 Introduction
2.1 EIR Requirement
This Environmental Impact Report supplements two Environmental Impact Reports
prepared to address the impacts of developing the Moller Ranch with residential uses
and replacing an existing culvert in the vicinity of the Moller Ranch property.
The Environmental Impact Report for the Eastern Dublin General Plan Amendment and
Specific Plan was adopted by the City of Dublin on May 10, 1993 by Resolution No. 53-
93 and included approximately 6,920 acres of land for the General Plan Amendment
(GPA) and 3,328 acres of land for the Specific Plan within the GPA area. The area
considered in this document is generally bounded by the I-580 freeway to the south, the
Alameda County / Contra Costa County line to the north, Parks Reserve Forces Training
Area (Parks RFTA) to the west and the ridgeline between Collier and Doolan Canyon to
the east. This Environmental Impact Report is hereafter referred to as the Eastern
Dublin EIR. The State Clearinghouse Number (SCH) for this EIR is 91103064.
In 2007, a Supplemental Environmental Impact Report (SEIR) was prepared for the
Moller Ranch and adjacent properties, entitled the "Casamira Valley/Moller Ranch
Project," State Clearinghouse (SCH) #2005052146, certified by the City Council on May
1, 2007 by Resolution No. 56-07. This will be referred to as the "Casamira SEIR" or
"Casamira Valley SEIR." The Casamira SEIR analyzed the impacts of prezoning and
annexing 238.3 acres to the City of Dublin as well as potential development on three
adjacent parcels of land, including the Moller Ranch property (approximately 226 acres)
and the Tipper property (approximately 12.5 acres).
The Casamira SEIR analyzed the following environmental topics: agricultural resources,
traffic and transportation, community services and facilities, sewer, water and drainage,
soils and geology, biological resources, cultural resources, hazards and hazardous
materials, air quality and parks and recreation.
Following certification of the Casamira SEIR, the City of Dublin approved a Planned
Development prezoning with a Stage 1 Development Plan and related approvals
(Ordinance No. 09-07) for the Moller Ranch and an adjacent property. On July 2, 2007,
the Alameda County Local Agency Formation Commission (LAFCO) approved the
annexation of the Moller and Tipper properties and adjacent Tassajara Road right-of-
way to the City as well as annexing these properties into the Dublin San Ramon
Services District service area.
Subsequent to the 2007 approvals by the City, the current applicant has filed a request
with the City (PLPA 2011-00003) to modify the existing General Plan and Eastern
Dublin Specific Plan designations for the subject property. Other requested approvals
include a Vesting Tentative Map and Planned Development Rezoning including a Stage
1 and 2 Development Plan and a Development Agreement.
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 2
City of Dublin September 2012
Additionally, as part of a separate project, the existing 50-year-old Tassajara Road
culvert over Moller Creek just south west of the Moller Ranch property and a tributary
of Tassajara Creek would be replaced. The replacement would likely involve grading
and other work within Moller Creek, and the project will include energy dissipation,
scour control and bank stabilization and revegetation measures. This project is
programmed in the Eastern Dublin Traffic Impact Fee Program as part of the
improvements to Tassajara Road.
The proposed culvert replacement portion of the project will most likely include the
following permits: State of California: 1602/3 Streambed Alteration Agreement; and an
Incidental Take Permit per California Code of Regulations, Title 14, Section 783.1. In a
Section 404 Permit will likely be required from the United States Army Corps of
Engineers (USACE) including a Section 7 consultation (under the Endangered Species
Act) from the United States Department of Fish and Wildlife; and a Section 401 Clean
Water Certification from the San Francisco Bay Regional Water Quality Control Board.
Consistent with the City's practice for projects in Eastern Dublin, the City recently
prepared an Initial Study to determine if the proposed Project, including the culvert
replacement, would require additional environmental review beyond that analyzed in
the two previous EIRs. The Initial Study is found in Appendix 8.1. The Initial Study
disclosed that many anticipated impacts of the proposed actions have been adequately
addressed in the Eastern Dublin EIR and the Casamira Valley EIR. This is consistent
with the comprehensive environmental analysis undertaken as part of the Eastern
Dublin EIR with a 20-30 year build -out horizon. Although the Initial Study concluded
that the two previous EIR adequately analyzed most of the potential environmental
impacts of the proposed project, it also identified the potential for a number of new
significant impacts or potentially intensified impacts beyond those analyzed in the
Eastern Dublin EIR and the Casamira Valley EIR. The City of Dublin has determined
that the potential for new and/or substantially intensified impacts required review at
an EIR level and concluded that a Supplemental EIR should be prepared.
Consequently, as required by CEQA, the City prepared and circulated a Notice of
Preparation (NOP) to interested public and private parties. A copy of the NOP is
included as Appendix 8.2 and responses to the NOP are included in Appendix 8.3.
2.2 Scope of Supplemental EIR
Once an EIR is certified for a project, CEQA prohibits Lead Agencies from preparing a
supplemental or subsequent EIR except under specific circumstances. According to
CEQA Guidelines Section 15162, additional EIR-level review may be required only
when substantial changes to the project would cause new or substantially increased
significant effects, or when substantial changes in circumstances would result in new or
substantially increased significant effects, or when substantial new information shows
the project would cause new or substantially increased significant effects, or when it is
shown that previously infeasible mitigation measures would now be feasible but the
project proponent declines to adopt them.
As identified in the Initial Study (see Appendix 8.1), there are changed circumstances
and new information since certification of the Eastern Dublin EIR and the Casamira
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 3
City of Dublin September 2012
Valley SEIR that could result in new or intensified significant impacts as related to the
currently proposed project. These include:
1. The potential for new biological species to be present on the Project area based
upon changed biological regulations and the addition of the proposed culvert
replacement that was not analyzed in previous CEQA documents.
2. The addition of more dwellings in the proposed project than identified in prior
EIRs may substantially increase local and regional traffic beyond that identified
in the Eastern Dublin EIR and Casamira Valley EIR.
3. Changed surface water quality regulations adopted by the San Francisco Bay
Regional Water Quality Control Board may also have potentially significant
impacts on the proposed Project.
The Initial Study identifies potential impacts to the categories of air quality, biological
resources, and traffic and transportation for further review in a Supplemental EIR.
This DSEIR describes the degree to which the project's potential impacts to these
environmental categories were adequately addressed in the previously certified Eastern
Dublin EIR and Casamira Valley SEIR. It further describes the type and extent of
potential significant impacts beyond those analyzed in the previous EIRs. Where
supplemental significant impacts are identified, supplemental mitigation measures are
proposed to reduce the impacts to a less -than -significant level.
CEQA requires that an EIR identify a reasonable range of alternatives, which was done
in the Eastern Dublin EIR and the Casamira Valley SEIR for the Specific Plan area. One
of these alternatives was adopted in modified form in the 1993 approvals. To address
the potential for new and/or substantially intensified significant impacts, this revised
DSEIR identifies additional alternatives for the project area that could avoid or
potentially lessen identified impacts.
This Draft Supplemental EIR is based on the project applications and available level of
detail, including technical studies to assess the specific impacts of constructing up to
382 dwellings on the Moller Ranch property, amending the General Plan and Eastern
Dublin Specific Plan to redesignate a portion of the site as Single Family Residential;
and replacing an existing culvert over Moller Creek. The Eastern Dublin EIR, the 2007
Casamira Valley Supplemental EIR and this Draft Supplemental EIR (DSEIR) together
identify and assess the potentially significant impacts of the proposed actions associated
with this project.
Copies of the 1993 Eastern Dublin EIR and the 2007 Casamira Valley EIR are available
for review at the City of Dublin Community Development Department, 100 Civic Plaza,
Dublin CA 94568 during normal business hours.
2.3 Legal Basis for Supplemental EIR
Based on the previous EIR analysis and CEQA Guidelines Sections 15162 and 15163, the
City has determined that a Supplemental EIR should be prepared for this project rather
than a Subsequent EIR. Subsequent and Supplemental EIRs are both similar in
procedural and substantive respects. Both types of EIRs build on a previously certified
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 4
City of Dublin September 2012
EIR. Both types of EIRs analyze potentially significant changes to a project and/or
environmental circumstances when those changes would result in a new significant
impact or would substantially increase the severity of previously identified impacts.
Both types of EIRs are circulated by themselves, without the previously certified EIR.
With the above similarities, the choice between a Subsequent and Supplemental EIR is a
matter of the degree of additions or modifications to the two previous EIRs needed to
analyze the new or substantially increased significant impacts. Neither is a "new" EIR;
both types of EIRs analyze the substantial changes from the previous analysis. Based on
the Initial Study prepared for the project, the City has determined that a Supplemental
EIR is appropriate for the following reasons:
1. The overall type, intensity and urban character of land uses within the project
area are generally consistent with the approved land uses as shown in the
Eastern Dublin General Plan.
2. Proposed additions or modifications needed to update the previous EIRs to
reflect the scope of this project do not require a full re -analysis of a particular
impact.
3. The proposed project includes undertaking actions identified in the previously
certified EIRs as implementing actions.
For the above reasons, the City has determined that the current project does not raise
new policy issues as to the type, location, direction or extent of growth. Further, the
range of potential impacts identified in the Initial Study is the same range as previously
analyzed in previous EIR. Finally, the nature of the potential changes identified in the
project Initial Study generally requires updating or refinement of the previous EIR
analysis, rather than a full re -analysis. Irrespective of the label, and consistent with both
Subsequent and Supplemental EIR provisions of CEQA Guidelines Section 15162 and
15163, the City will not approve the project without first certifying an EIR which
comprehensively addresses the potential for significant environmental impacts of the
current project beyond those addressed in the previous EIR.
2.4 Organization of Draft Supplemental EIR
The Draft Supplemental EIR ("DSEIR") supplements the Program EIR and Addenda
certified by the City of Dublin for the Eastern Dublin General Plan Amendment and
Specific Plan (SCH #911003064, "Eastern Dublin EIR, or "EDEIR") and the Casamira
Valley Supplemental EIR (SCH # 2005052146), both of which are incorporated herein by
reference.
This document is organized as follows:
• Chapter 1: Project Summary. This includes an overview of the project and a
summary of supplemental impacts and mitigation measures presented in tabular
form.
• Chapter 2: Introduction. Chapter 2 describes the organization of the DSEIR.
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 5
City of Dublin September 2012
• Chapter 3: Project Description. This chapter describes the proposed project,
project location and setting. Project Objectives are also described as well as future
approvals required to implement the proposed project.
• Chapter 4: Environmental Setting, Impacts and Mitigation Measures. Chapter 4
includes the impact and mitigation analysis for the project. Each environmental
topic includes existing conditions (the setting); potential supplemental
environmental impacts and their level of significance; and mitigation measures
recommended to reduce identified significant impacts.
• Chapter 5: Alternatives. This chapter addresses alternatives to the proposed
project and a discussion of an environmentally superior alternative.
• Chapter 6: Required CEQA Discussions: Chapter 6 includes additional
discussion as required by CEQA.
• Chapter 7: Report Authors and References. Chapter 7 lists the authors of the EIR
and organizations and persons consulted as part of the environmental analysis as
well as references used in the preparation of this DSEIR.
• Chapter 8: Appendices. Contained in the Appendices are the Initial Study,
Notice of Preparation (NOP), responses to the NOP, Resolution No. 53-93
approving the Eastern Dublin Project, including mitigation findings, overriding
considerations and mitigation monitoring program; and copies of the
supplemental air quality analysis, biological analyses and traffic analysis for the
proposed Moller Ranch development and culvert replacement and a traffic
analysis.
2.5 DSEIR Review Process
The DSEIR will be circulated for public review and comment pursuant to CEQA.
Written responses will be prepared to all relevant comments on environmental issues
received during the 45-day public review period. Public comments and responses will
be compiled in a Final Supplemental EIR (FSEIR), which will be available for public
review at least 10 days prior to certification of the SEIR by the City of Dublin. After
certification of the SEIR, the City will consider the requested project approvals and
make appropriate findings based on the certified SEIR.
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 6
City of Dublin September 2012
3.0 PROJECT DESCRIPTION
3.1 Project Location
The project site contains approximately 229.6 acres of land located on the east side of
Tassajara Road south of the Alameda/Contra Costa County line in the Eastern Dublin
area. Exhibit 3.1 shows the project location in relation to the overall Bay Area; Exhibit
3.2 shows its location in relation to the City of Dublin. The Moller Ranch. property
contains approximately 226.3 acres of land on the east side of Tassajara Road. Also
included within the project site is approximately 2.5 acres of land west of the Moller
Ranch within the right-of-way of Tassajara Road that contains an existing culvert within
Tassajara Road over Moller Creek. The right-of-way for Tassajara Road through the
Project site, outside of the culvert replacement area, contains an estimated 0.8 acres.
Exhibit 3.3 shows the proposed culvert replacement site.
In 1993, the City of Dublin adopted a General Plan Amendment for approximately 7,000
acres of land generally bounded by the I-580 freeway to the south, the Alameda
County/Contra Costa County boundary line to the north, Parks RFTA to the west and
the properties west of Doolan and Collier Canyon areas to the east. At the same time,
the City adopted the Eastern Dublin Specific Plan (EDSP), which addressed long-term
development of approximately 3,300 acres of land east of the central portion of Eastern
Dublin. In 2007, the City of Dublin approved a General Plan Amendment and an
Amendment to the Eastern Dublin Specific Plan to modify land uses on the Moller
Ranch and to include the Moller Ranch property within the EDSP planning area. Also,
in 2007, the Moller Ranch property and adjacent parcels were annexed into the City of
Dublin.
3.2 Project Area Features
Moller Ranch area. Existing land uses adjacent to the project site include vacant land to
the north and east. A Pacific Gas & Electric (PG&E) substation exists in the northeast
portion of the Moller Ranch.
Located to the south of the project area is a residential project, known as Fallon
Crossing that is currently under construction consisting of 106 single family units
owned by Standard Pacific. Other single-family residential projects exist to the south,
including Bella Monte, a KB Home project consisting of 48 units. The property west of
the project area is the Tipper, Vargas, and Fredrich properties. Additionally, the Dublin
Ranch West property is located southwest of the Moller site and is currently vacant. The
City of Dublin approved a Development Plan for 935 residential units for this property,
however construction has yet to begin.
The Moller Ranch is characterized by a small valley formed by Moller Creek, a tributary
of Tassajara Creek that flows in the southwesterly direction with moderate to steep
hillsides on each side of the creek in the western and central portions of the site. The
eastern portion of the site is flatter with less steep topography, although topography
becomes steeper in the southern area adjacent to the southern property line. Historical
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 7
City of Dublin September 2012
and existing uses within the Project area include livestock grazing. Two single-family
residences and several agricultural outbuildings have been constructed near the creek.
These buildings are proposed for demolition.
A Williamson Act Land Conservation Agreement is in effect for the Moller Ranch. A
Notice of Non -Renewal was filed with Alameda County in 2003 and the Agreement will
expire in 2013.
Access to the existing Moller Ranch is provided by a 20-foot wide paved road
from Tassajara Road. A number of unimproved trails and roads have also been
constructed throughout the area to support agricultural uses.
Moller Creek culvert area. The culvert replacement area is located in Moller Creek, a
tributary to Tassajara Creek just east of the confluence of the two. The area is
dominated by riparian woodland and non-native grassland with small areas of other
aquatic habitat. Areas adjacent to the site include private open space area consisting
mostly of non-native grassland habitat with some riparian habitat to the north and
east, private ranch land with associated structures and housing to the west, and new
residential development to the south.
3.3 Prior Planning Approvals
Eastern Dublin General Plan Amendment. In 1993, the City Council approved the Eastern
Dublin General Plan Amendment and Specific Plan (hereafter, "Eastern Dublin
project"). The approved project was a modified version of the original General Plan
Amendment (hereafter, "GPA") for a 6,920-acre planning area generally known as
Eastern Dublin. The original GPA proposed to change commercial land use
designations on County property in the southwest portion of the GPA area and
agriculture/open space designations elsewhere in the planning area to a range of urban
uses, as shown on Figure 2-E of the Eastern Dublin Draft EIR. Within the nearly 7,000
acre planning area, a new Eastern Dublin Specific Plan proposed land use policy at a
greater level of detail in order to "bridge" general plan policy and individual
development projects. Intended for both policy and regulatory use, the Specific Plan
addressed 3,328 acres, supplementing the GPA with more detailed land use
designations, policies, programs and regulations.
The GPA planning area was located east of the City of Dublin as it existed in 1993. The
planning area is characterized by a relatively flat plain along I-580, which gives way to
rolling foothills and increasingly steep slopes to the northeast. Apart from facilities on
County property in the southwest portion of the planning area (former Santa Rita
Rehabilitation Center, U.S. Naval Hospital), the Eastern Dublin project area consisted
primarily of open grasslands used for grazing and dry farming, and scattered
residences. (Eastern Dublin EIR, p. 2-3.)
The original GPA land use plan proposed to replace the undeveloped planning area
with a mixed -use urban community. The project concept is set forth in the following
excerpt from the Eastern Dublin EIR.
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 8
City of Dublin September 2012
Residential and employment -generating uses will be balanced to enable residents
to live near work. Employment -generating uses include retail, service, office,
governmental, research and development ("R and D"), and light industrial.
Residential designation [sic] range from Rural Residential to High Density multi-
family. Higher density housing has been located near the future BART station
and along a key transit corridor. Higher densities have also been located close to
commercial centers where the concentration of population will contribute to that
center's social and economic vitality.
The project provides a full complement of regional office and retail land uses
located near freeway interchanges, local -serving commercial centers are
envisioned as pedestrian- and transit -oriented mixed -use concentrations which
include retail, service, office, and residential uses, and are carefully integrated
with surrounding residential neighborhoods.
Open space is a major component of the project's land use plan, giving form and
character to the urban development pattern. The open space concept envisions a
community ringed by undeveloped ridgelines. Urban and open space areas will
be linked by an open space network structured along enhanced stream corridors.
The circulation concept calls for an integrated, multi -modal system that reduces
potential traffic impacts by providing area residents with choices for a preferred
mode of transportation. (DEIR pp. 2-4, Eastern Dublin Responses to Comments,
hereafter, "FEIR" p. 66.)
At buildout, the GPA planning area was projected to provide 17,970 new residences,
including 2,672 acres designated for Rural Residential with a 100 acre minimum parcel
size. Approximately 10.6 million square feet of new commercial space, 25 parks on 287
acres, 571 acres of designated open space, and 12 new schools were also planned, all on
6,920 acres of land. (Eastern Dublin EIR, p. 2-7.) Buildout was expected to occur over a
20 — 30 year period from the start of construction. (Eastern Dublin EIR, p. 2-6, Eastern
Dublin Final EIR p. 8.) The major policies of the GPA are summarized on pages 2-9 -10
of the Eastern Dublin EIR.
Exhibit 3.4 depicts the existing General Plan land use designations for the project site.
In 2007, the City of Dublin amended the General Plan for the Moller Ranch property,
changing the primary land use designation on the site from primarily Single Family
Residential to Medium Density Residential.
Eastern Dublin Specific Plan. The Eastern Dublin Specific Plan (EDSP) addresses 3,301
acres in the western portion of the GPA planning area. Seventy percent of the GPA
residential development and 94% of the new commercial space was planned for in the
Specific Plan area. (Eastern Dublin EIR, p. 2-8.) The land use plan calls for compact
villages with residential and neighborhood serving uses. Employment -generating
commercial uses are provided along arterials with transit access. (Id.) The major policies
of the Specific Plan are set forth on pages 2-10 to 2-14 of the Eastern Dublin EIR.
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 9
City of Dublin September 2012
Exhibit 3.5 shows existing EDSP land use designations for the Moller Ranch property,
which is primarily Medium Density Residential.
Eastern Dublin EIR. The City of Dublin prepared a Program EIR for the Eastern Dublin
project based on the original 6,920 acre GPA planning area and land use designations,
and 3,301 acre Specific Plan area, both as described above. (SCH # 91103064.) The EIR
also identifies a third component of Project Implementation. (Eastern Dublin EIR, p. 2-
4.) This component includes "procedural steps ... to be undertaken for full
implementation of the [GPA and Specific Plan] Project." This included Alameda County
Local Agency Formation Commission (LAFCO) determinations on annexation to the
City of Dublin and other similar actions. One of these actions includes resolution of
school district boundaries between the Dublin Unified School District and the
Livermore Valley Joint Unified School District boundary.
The City initiated the Eastern Dublin project in 1988 after several separate development
projects were proposed for the area. The goal of the project was to provide
comprehensive planning for development types, locations and patterns in Eastern
Dublin, which would be implemented through future individual development projects.
As noted in the Eastern Dublin EIR statement of project objectives, one of the objectives
of the project was to preserve visually -sensitive and biologically -sensitive habitat areas,
encourage development patterns that support transit on local and regional levels, and
maintain balanced employment and housing opportunities to reduce traffic congestion
and air pollution. (Eastern Dublin EIR, p. 2-5.)
The EIR analyzes the potential environmental effects of adopting and implementing the
GPA and Specific Plan project. The EIR also analyzes the cumulative effects of the
Eastern Dublin project, that is, the project "within the context of regional development."
(DEIR p. 5.0-1.) As required by CEQA, the Eastern Dublin EIR includes a list of ongoing
and future development projects that, together with the Eastern Dublin project, might
"compound subregional (i.e. Tri-Valley) environmental problems." (Id.) Reflecting a
surge of development interest at the time, the cumulative projects in Dublin alone
included 924 units, plus another 3,133 units on 3,140 acres in Western Dublin, and the
potential intensification of uses at Parks RFTA. The Dougherty Valley Specific Plan
projected 11,000 units; while the City of Livermore was considering the North
Livermore General Plan Amendment with a buildout potential between 3,713 and
16,513 units. The various cumulative projects also proposed several million square feet
of non-residential development. The list of cumulative projects from the Eastern Dublin
EIR is shown on Figure 5-A of that DEIR. Virtually all of the potential new development
areas in the list of cumulative projects was undeveloped land, primarily in agriculture
and/or open space uses, as evidenced by the aerial photographs which form the base
maps for Figures 2-13 and 2-C of the Eastern Dublin DEIR.
As would be expected for a major general plan level project during a time of major
development activity, the Eastern Dublin EIR identified many potential significant
impacts on both a project (GPA and Specific Plan) level and a cumulative (regional)
level. Mitigation measures were proposed and adopted for most of the significant
impacts to reduce them to less than significant. The City of Dublin would implement
some of the mitigation measures directly; examples include but are not limited to
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 10
City of Dublin September 2012
adopting a stream corridor restoration program, designating substantial areas within
the project area as Open Space or Rural Residential where low density development
will also provide foraging habitat, and continuing to participate in regional studies of
future transportation requirements, improvements and funding. Other mitigations
would be implemented through conditions or development standards for future
development projects; examples include but are not limited to proportionate -share
contributions to roadway improvements and transit service extensions. Many of the
mitigation measures also included policies and action programs identified in the
Eastern Dublin GPA and Specific Plan documents.
Even with mitigation, however, some of the identified significant impacts could not be
reduced to a less than significant level. Several of these impacts were cumulative level
impacts, such as loss of agriculture and open space, I-580 and other regional traffic
impacts, and air quality impacts. As required by CEQA, the Draft EIR identified project
alternatives, including No Project and No Development alternatives, a Reduced Land
Use Intensities alternative, and a Reduced Planning Area alternative, and analyzed
whether the alternatives would avoid any of the otherwise unavoidable impacts. As
further discussed below, the City Council adopted a modified version of the Reduced
Planning Area alternative after certifying the EIR as adequate and in compliance with
CEQA on May 10, 1993. (Resolution 51-93.) The City Council also certified an
Addendum dated May 4, 1993 which assessed the modifications to the Reduced
Planning Area alternative and concluded that this alternative "will have no
environmental impacts not addressed in the Draft Environmental Impact Report for the
Eastern Dublin General Plan Amendment and Specific Plan." (May 4, 1993 Addendum,
p. 1.) The Addendum further concluded that no subsequent or supplemental EIR was
required under CEQA Guidelines section 15162 or 15163 for approval of the modified
alternative.
A second Addendum was later prepared. Dated August 22, 1994, the second
Addendum updated plans for providing sewer services to Eastern Dublin. The May 10,
1993 certified EIR, the May 4, 1993 Addendum and the August 22, 1994 Addendum are
collectively referred to hereafter as the Eastern Dublin EIR, or the "EDEIR" and are
incorporated herein by reference.
Eastern Dublin project approval. The Eastern Dublin General Plan Amendment and
Specific Plan planning process spanned some five years beginning in 1988. The City
identified a preferred alternative in 1991 and prepared a draft GPA for the 6,920-acre
planning area and a Specific Plan for 3,228 acres in 1992. A Draft EIR was prepared and
circulated for public review in August of 1992. After numerous Planning Commission
and City Council hearings, the City Council declined to approve the original 6,920-acre
GPA. Instead, the City Council approved a modified version of the Eastern Dublin
EIR's Alternative 2: Reduced Planning Area. (Resolution 53-93, see Appendix 8.4 of this
DSEIR.)
Alternative 2 reduced the GPA area by 2,744 acres, a nearly 407o reduction in project
area. More specifically, Alternative 2 provided for buildout of the Specific Plan area,
buildout of the GPA area only within the Dublin Sphere of Influence, but no annexation
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 11
City of Dublin September 2012
and no GPA for Doolan Canyon. (DEIR p. 4-9.) Intended as a "midpoint" between
development and environmental concerns,
Doolan Canyon would not develop and its current agricultural land uses and
rural character would be maintained. The importance of this area's function as a
"green" community separator between Dublin, Livermore and the Tassajara
Valley would increase as development occurred in eastern Dublin, and North
Livermore, and lands east of San Ramon. (Id.)
Following certification of the Eastern Dublin EIR and approval of the modified Reduced
Planning Area alternative, a lawsuit was filed challenging the validity of the EIR. The
Court upheld the EIR, finding it in compliance with CEQA and the CEQA Guidelines.
The City has since implemented the mitigation monitoring program adopted by the
Council (Resolutions No. 53-93 and 123-96), as interpreted by the Court's Memorandum
of Decision. Copies of the resolution and the Court's Memorandum of Decision may be
obtained from the City Clerk.
Casamira Valley 2007 project approval. Approvals granted by the City in 2007 for the
Moller Ranch project included an amendment Dublin General Plan that
redesignated a portion of the site to a Medium Density Residential land use
classification. An amendment to the Eastern Dublin Specific Plan was also
approved to include the Moller Ranch property within the Specific Plan and
designated this property for residential and open space uses, a Planned
Development prezoning with a Stage 1 Development Plan for the 238.8-acre area
that applied to the Moller Ranch and an adjacent property. Land use approvals
that applied just to the Moller Ranch included a Planned Development prezoning
and a preannexation agreement. The City also authorized City staff to file an
application with the Alameda County Local Agency Formation Commission to
annex all affected properties to the City of Dublin and the Dublin San Ramon
Services District.
The DSEIR prepared in conjunction with the project analyzed the proposed
development of up to 209 dwellings on the Moller Ranch. Alternative 4 contained
in the DSEIR analyzed the construction of up to 326 dwellings and was approved
by he City by Resolution No. 58-07 and Ordinance No. 09-07.
3.4 Project Applications
Overview. The proposed project would affect the 226.3-acre Moller Ranch project site. At
buildout, the Moller property would contain up to 382 single-family detached dwelling
units on lots of various sizes within an area of approximately 79.6 acres of the site. In
addition to single-family dwelling units, the project would be developed with an
approximately 1.1-acre neighborhood park, 1.2 acres of Semi -Public land use including
trails and a staging area, infrastructure, and a system of bio-retention cells for storm
water pollution control. Approximately, 136.8 acres of the site would be zoned as Rural
Residential / Agriculture and remain as permanently undeveloped open space.
Approximately 7.6 acres of the site would be designated as Open Space. Open space
areas would be owned and maintained by a combination of a proposed homeowners'
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 12
City of Dublin September 2012
association and a GRAD (geologic hazards assessment district). The applicant for
Moller Ranch project is Braddock & Logan Services.
Moller Creek Culvert Replacement. The project would also include the replacement of an
existing 50-year old Tassajara Road culvert over Moller Creek with a new culvert
structure. This portion of the project is being proposed by the City of Dublin.
In anticipation of local and regional population growth and residential development
and increased use of Tassajara Road included in the Dublin General Plan and adjacent
jurisdictions, the Tassajara Road is proposed to be eventually widened from two lanes
(current configuration) to six lanes (ultimate width). Currently Tassajara Road crosses
over Moller Creek over a corrugated metal pipe culvert approximately 9 feet in
diameter and with a length of 140 feet. Current conditions of Moller Creek include
incised creek banks, a steep longitudinal profile, and bank instability progressing
through the Tassajara Road crossing. The current culvert does not allow any wildlife
passage on Moller Creek across Tassajara Road as a drop of over 9 feet exists on the
downstream end of the culvert.
The culvert replacement would include a realignment of Moller Creek in the described
location along with energy dissipating features, elimination of fish barriers and
inclusion of wildlife paths through the arched culvert. The arched culvert is designed
with a length of approximately 230 feet and a 26-foot span. The design is proposed to
include a series of cobble and boulder weirs within the culvert designed to
accommodate fish passage and benched edges designed for wildlife access along Moller
Creek and under Tassajara Road. Proposed actions would also align and grade portions
of Moller Creek and its banks both upstream and downstream of the new arched
culvert. Bioengineered erosion protection measures would be installed along the banks
and within the creek channel. Additionally the proposed culvert would be designed to
allow for accommodation of a 100-year flood under Tassajara Road.
Exhibit 3.6 shows the preliminary design of the culvert replacement.
Also existing within the road right-of-way (and below the roadbed) over the culvert
crossing of Moller Creek, is a Dublin San Ramon Services District (DSRSD) 20-inch
water line. This water line is part of the master infrastructure that provides the majority
of the water to the Dougherty Valley and Windermere area within the City of San
Ramon in Contra Costa County.
The City of Dublin proposes to replace the existing pipe culvert under the road with an
enlarged culvert across the creek and widen the roadway crossing over Moller Creek to
accommodate the planned ultimate six lanes. The enlarged culvert is designed to
accommodate a future six -lane road, correct the hydrologic and bank instability in this
location, and allow for wildlife access and connection of the wildlife corridor along
Moller Creek and under Tassajara Road. It would be necessary for Moller Creek to be
realigned upstream of the culvert for a better approach through the crossing.
Moller Ranch characteristics. The second part of the Project includes a revision to the
approved Development Plan for the Moller Ranch property. The applicant proposes to
construct up to 382 single family detached dwellings on this approximately 226-acre
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 13
City of Dublin September 2012
site. The existing Stage 1 Development Plan is shown on Exhibit 3.7. The main
development area would be located in the easterly portion of the area served by the
loop primary access road that would have smaller subdivision streets branching from
the loop road.
The Moller Ranch property is characterized as a topographic "bowl," with generally flat
to moderate areas in the center portion of the property and steeply sloping areas to the
north and south. Proposed development would occur in the interior bowl area.
Table 3.1, below, compares the approved General Plan land uses for the Moller property
with the proposed General Plan land uses.
Table 3.1. Existing v. Proposed General Plan Land Uses
Land Use
Dwellings I Gross Acres
Dwellings I Gross Acres
--
Existing
Proposed
Rural
1
143.7
1
136.8
Residential /
Agricultural
Low Density/
-
--
0-474
79.6
Single Family
Residential
Medium Density
298-684
48.9
--
--
Residential
Open
--
32.6
--
7.6
Space / Stream
Corridor
Neighborhood
--
1.1
--
1.1
Park
Semi -Public
-
-
-
1.2
Total
298-685
226.3
0-474
226.3
Source: Mackay & Somps, 2012
Table 2 shows the 2007 approved land uses on the Moller Ranch site compared to
the currently requested land uses.
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 14
City of Dublin September 2012
Table 3.2. 2007 Approved Land Uses v. Current Request
Land Use
Acres
Maximum
Dwelling Units
Acres
Maximum
Dwelling
Units
2007 Approval
Current Request
Low Density
Residential
30.3
209
79.6
381
Rural
Residential / Agricult
ure
--
--
136.8
1
Neighborhood Parks
1.5
--
1.1
Open Space
173.6
--
7.6
--
Roadways
20.9
--
Semi-Public
1.2
Total
226.3
209
226.3
382
*Included in the Low Density Residential Land Use
Source: Mackay & Somps, 2012
Lot sizes for the single-family residences would generally range from a minimum of
4,500 square feet (smallest) to 5,500 square feet or greater. Most dwellings would be two
stories in height and the sizes of dwellings would also vary.
Moller Creek, flows in a northeast to southwest direction through the project site.
Appropriate Planned Development zoning regulations have been proposed as part of
the Stage 1 & Stage 2 Development Plan to preclude development within and adjacent
to the stream as well as to provide non -buildable buffers adjacent to the stream
corridor.
Circulation and access. A divided road with two travel lanes (one in each direction)
would provide access to the project site from Tassajara Road. The intersection at
Tassajara Road would be fully signalized. A network of looped City maintained roads
would provide access to the development area. A culvert crossing would be used for
the single crossing of Moller Creek, located approximately within the center of the
project site.
Utility services. Domestic water service and sewer service would be provided by Dublin
San Ramon Services District (DSRSD). The Project developer would be required to
install mainline extension of sewer along the frontage, to the entrance of the project as
well as the in -tract water and sewer lines and laterals.
Preliminary storm drainage plans include collecting storm water runoff into a series of
underground storm drain lines and transporting storm water flows into several bio-
retention cells located on -site. The storm water would then be detained and cleaned
within these cells and would be metered out to replicate the existing, predevelopment
site condition. All storm water from the site would be transported into a new outfall for
disposal into Moller Creek.
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 15
City of Dublin September 2012
GradinZ. The applicant proposes to grade portions of the Project site to allow
construction of the residential areas and roadways. Limited grading would occur in the
southern portion of the site. A majority of the grading would occur in the eastern
"bowl" portion of the site. Grading would also be used to repair the existing landslides
located on portions of the site. Exhibit 3.8 shows the preliminary grading plan for the
Moller Ranch property.
The preliminary grading plan indicates that cut -and -fill would be balanced on the site.
Erosion controls would be implemented during grading activities pursuant to City and
Regional Board requirements, as enforced by the City of Dublin, to protect surface
water quality.
Inclusionary housing The City of Dublin's inclusionary zoning ordinance requires that
12.5% of a project's dwelling units must be affordable to very low, low and moderate
income households. Compliance could consist of constructing the required number of
inclusionary units and/ or paying an in -lieu fee to the City, or some other form of
compliance subject to approval by the City.
Moller Ranch requested land use approvals
As described above, a number of land use approvals are required to construct the
project as proposed. These are described in more detail below.
General Plan
The City of Dublin General Plan was amended as part of the 2007 approvals for the
Casamira Valley/Moller Ranch project. This amendment changed the land use
designation from Single Family Density Residential (0.9-6.0 dwelling units per acre)
to Medium Density Residential (6.1 units to 14.0 units per acre). The proposed
project would require the land use designation be changed back to Single Family
Density Residential (0.9-6.0 dwelling units per acre). Exhibit 3.9 depicts proposed
General Plan land use designations.
Eastern Dublin Specific Plan
The 2007 Casamira Valley/Moller Ranch project amended the Eastern Dublin
Specific Plan (EDSP), to include the project area within the EDSP. Prior to 2007, the
area was not included within the plan area. In addition, the 2007 approvals
incorporated a specific plan land use designation for the subject property as
Medium Density Residential (6.1 units to 14.0 units per acre). Consistent with the
General Plan amendment described above, the proposed project would require the
land use designation be changed to Single Family Density Residential (0.9-6.0
dwelling units per acre). Exhibit 3.10 shows proposed Specific Plan land use
designations.
Stage 1 & Stage 2 Development Plans and Rezoning. A Stage 1 Development Plan
was approved in 2007. The current applicant is proposing a new Stage 1 and Stage 2
Planned Development Zoning to allow the development project on the Moller Ranch
property as identified above. A rezoning is being considered to ensure consistency
with the requested General Plan and Specific Plan Amendments. Exhibit 3.11a
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 16
City of Dublin September 2012
shows the proposed Stage 1 Development Plan for the Moller Ranch property.
Exhibit 3.11b shows the proposed Stage 2 Development Plan.
Vesting Tentative Map. The Vesting Tentative Tract Map application shows that 381
lots would be considered with the Stage 2 Development Plan application for the
Moller Ranch. The Tentative map is shown on Exhibit 3.12.
Development Agreement
Consistent with the policies contained within the EDSP, the applicant is requesting a
Development Agreement (DA). The DA will articulate applicant responsibilities for
development impact fees, reimbursements to other parties for oversizing of
infrastructure, as well as project vesting timeframes.
Development agreements, which are required by the Eastern Dublin Specific Plan,
vest development approvals for a specified period of time so that developers of
large, time extensive projects have the ability to construct such projects in a time
frame and under mutual obligations beneficial to the City and the project proponent.
Issues typically addressed in development agreements include, but are not limited
to: density and intensity of land use; timing of development; financing methods and
timing of infrastructure; determination of traffic, noise, public facility and other
impact fees; and obligations for construction of streets and roads.
Moller Creek Culvert Replacement
A Joint Aquatic Resource Permit Application will be prepared for the federal and state
permit applications under the following permits:
• Section 1602 / 3 Streambed Alteration Agreement (CDFG);
• Incidental Take Permit per California Code of Regulations (CDFG);
• Section 404 Permit from the United States Army Corps of Engineers (USACE)
including a Section 7 consultation (under the Endangered Species Act) from the
United States Department of Fish and Wildlife; and
• Section 401 Clean Water Certification from the San Francisco Bay Regional Water
Quality Control Board.
3.5 Project Objectives
The objectives of the Eastern Dublin project are set forth in the Eastern Dublin EIR.
(DEIR p. 2-5.) All of the identified objectives are objectives of the current Project as it
implements the comprehensive land use plan adopted in 1993 and as amended in 2007.
Additional objectives of the project include.
1) Implement the City's objectives for Eastern Dublin as set forth in the General
Plan, Eastern Dublin Specific Plan, and Eastern Dublin EIR.
2) Initiate a zoning level framework to guide future development on the Moller
Ranch property consistent with the General Plan and Eastern Dublin Specific
Plan.
3) Achieve development of 382 dwelling units on the Moller Ranch property within
the Eastern Dublin Specific Plan area.
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 17
City of Dublin September 2012
4) Provide for the extension of a combination trail and walkway adjacent to Moller
Creek on the Moller Ranch property.
5) Provide project -specific standards and mechanisms to protect streamcourses.
6) Remove and replace the aging existing culvert over Moller Creek in an
environmentally sensitive manner.
3.6 Future Actions Using This Draft Supplemental EIR
This Draft SEIR supplements the certified Eastern Dublin EIR and the 2007 Casamira
Valley Supplemental EIR pursuant to Sections 15162 and 16163 of the CEQA Guidelines
for the following anticipated future actions related to the proposed project.
State or regional agencies in their review of other permits required for the project (such
as CDFG Streambed Alteration Agreements, 404 Permit issued by the U.S. Army Corps
of Engineers, California Endangered Species Act permits, Water Quality Certification or
waiver by the Regional Water Quality Control Board under the Clean Water Act).
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 18
City of Dublin September 2012
SOURCE: MacKay& Somps, 8-22-2012.
CITY OF DUBLIN
MOLLER RANCH PROJECT
DRAFT SUPPLEMENTAL EIR
Exhibit 3.1
REGIONAL LOCATION
SOURCE: MacKay& Somps, 8-22-2012.
CITY OF DUBLIN
MOLLER RANCH PROJECT
DRAFT SUPPLEMENTAL EIR
Exhibit 3.2
SITE CONTEXT
SOURCE.• MacKay & Somps, 8-22-2012.
CITY OF DUBLIN
MOLLER RANCH PROJECT
DRAFT SUPPLEMENTAL EIR
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4.0 Environmental Analvsis
Topics Addressed in the DSEIR
This section of the DSEIR identifies specific environmental areas which
may be affected as a result of the implementation of the proposed Project.
The impact areas are discussed individually in subsections 4.1 through
4.11:
Each topic area is covered in the following manner:
A. Environmental Setting
A discussion of existing conditions, facilities, services and general
environmental conditions on and around the project sites.
B. Impacts and Mitigation Measures from Previous EIRs
C. Supplemental Environmental Impacts
An identification and evaluation of whether the potential impacts on the
environment identified in the Initial Study, should the Project be
constructed as proposed would result in a significant substantially
increased manner beyond the analysis in the Eastern Dublin EIR and
Casamira Valley SEIR based on the standards of significance set forth
therein.
D. Supplemental Mitigation Measures
An identification of specific efforts and measures which can be
incorporated into the Project to reduce identified supplemental
environmental impacts to a level of insignificance.
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 32
City of Dublin September 2012
4.1 TRAFFIC AND TRANSPORTATION
INTRODUCTION
Transportation and Circulation was analyzed in Chapter 3.3 of the Eastern
Dublin EIR and Chapter 4.2 of the Casamira Valley SEIR. This supplement to the
previous EIRs examines the proposed project to determine if any new or more
severe impacts would exist regarding traffic or circulation issues as a result of
project changes on or changed conditions, including but not limited to increased
urban development in the Tri-Valley area and beyond.
Information and analysis included in the following section is based on the
"Traffic Impact Study for Moller Ranch" prepared by Kimley-Horn Associates in
August 27, 2012. This report is incorporated by reference into this DSEIR and is
available for review at the Dublin Public Works Department during normal
business hours. Technical information, including Level of Service calculations
and related information is included in Appendix 8.6 of this DSEIR. .
ENVIRONMENTAL SETTING
Existing roadways. Existing roadways serving the project site include:
Camino Tassajara. Camino Tassajara is an arterial roadway running north -south
within the project study area. It transitions from two lanes into three lanes on the
southbound approach to Windemere Parkway. The posted speed limit on Camino
Tassajara is 45 mph. Land uses adjacent to the roadway consist of rural land and
ranches within the study area. South of the City of Dublin city limit, the street name
changes to Tassajara Road and contains two travel lanes adjacent to the project site.
Central Parkway. Central Parkway is a two-lane Class I Collector roadway with turn
lanes at major intersections and landscaped medians. Class II bike lanes are present
on both sides of the roadway. The posted speed limit on Central Parkway is 35 mph
and the roadway runs east -west. Land uses adjacent to the roadway are
predominantly residential homes along with Emerald Glen Community Park,
James Dougherty Elementary School, and a business park.
Cydonia Court. Cydonia Court is a two-lane residential street that ends in a cul-de-
sac. This roadway allows access to residential homes. There is no posted speed limit
as this roadway has not been accepted by the City.
Dougherty Road. Dougherty Road is a six -lane arterial roadway with landscaped
medians, turn lanes at major intersections, and restricted parking near the project
study area at Dublin Boulevard. The posted speed limit is 40 mph near the project
study area. Dougherty Road runs north -south and the adjacent land uses are
residential homes and commercial land uses near the project study area.
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 33
City of Dublin September 2012
Dublin Bozdevm'd. Dublin Boulevard is an east -west, six -lane, arterial roadway. The
posted speed limit is 45 mph for most of the corridor in the study area except 35
mph near Dougherty Road. The roadway contains bus stops, Class II bike lanes,
and restricted parking. Adjacent land uses are divided between commercial uses
and residential uses. The land use west of Hacienda Drive is predominantly
commercial and undeveloped land. East of Hacienda Drive and north of Dublin
Boulevard, the adjacent land use is residential, while to the south, the adjacent land
use is commercial.
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 34
City of Dublin September 2012
El Charro Road. El Charro Road is a two-lane arterial roadway. The posted speed
limit is 35 mph and the roadway runs north -south. Land use is mainly undeveloped
land but commercial developments are under construction near the I-580 ramps.
Fallon Road. Fallon Road is a four -lane arterial roadway with turn lanes at major
intersections. The roadway tapers off into two lanes north of Dublin Boulevard. The
roadway has Class II bike lanes and the posted speed limit is 40 to 45 mph. The
surroundings are mainly residential land uses with pockets of undeveloped land.
Fallon Road becomes El Charro Road south of I-580.
Gleason Drive. Gleason Drive is a four -lane Class I Collector with landscaped
medians, Class II bike lanes, restricted parking, and turn lanes at major
intersections. Adjacent to the roadway is mostly residential. A California Highway
Patrol office and an Alameda County Fire Station are located adjacent to Gleason
Drive at Madigan Road. Emerald Glen Community Park is located south of Gleason
Drive. The posted speed limit is 40 mph and the roadway runs east -west.
Hacienda Drive. Hacienda Drive is a Class I Collector roadway running north -south.
The road consists of five lanes from Dublin Boulevard to Central Parkway and
three lanes north of Central Parkway. The roadway contains Class II bike lanes,
landscaped medians, and turn lanes at major intersections. The adjacent land use
near the project study area is residential and office north of Dublin Boulevard. The
posted speed limit is 35 mph.
Highland Road. Highland Road is a two-lane, rural roadway with a posted speed
limit of 40 mph. There are Class II bike lanes and unpaved shoulders. Highland
Road is oriented east -west.
Pimlico Drive. Pimlico Drive is a two-lane collector roadway with a two-way left -
turn lane. The adjacent land uses are commercial and residential. The roadway runs
east -west and the posted speed limit is 30 mph. Turn lanes are provided at major
intersections.
Santa Rita Road. Santa Rita Road is a five -lane arterial roadway with landscaped
medians and turn lanes at major intersections. The posted speed limit is 45 mph
and it runs north -south. Adjacent land use is primarily residential to the southeast
and commercial to the northwest.
Silvera Ranch Drive. Silvera Ranch drive is a residential roadway running east -west
with a posted speed limit of 25 mph. There are two lanes and on -street parking.
Tassajara Road. Tassajara Road is a two-lane, arterial roadway from the County line
to N. Dublin Ranch Drive. From N. Dublin Ranch Drive to I-580, Tassajara Road is
between four to six lanes. North of Fallon Road, the adjacent land use is mostly
rural with residential just northeast of the intersection on Tassajara Road and Fallon
Road. From Fallon Road to Gleason Drive, the adjacent land use becomes primarily
residential. The adjacent land uses from Gleason Drive to I-580 includes Emerald
Glen Community Park, commercial use and undeveloped land. The posted speed
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 35
City of Dublin September 2012
limit is 45 mph and it runs north -south. South of I-580 the roadway name changes
to Santa Rita Road.
Windeinere Parkzvay. Windemere Parkway is a four -lane arterial roadway with
landscaped medians and Class II bike lanes. The posted speed limit is 40 mph and
the roadway runs east -west. Adjacent land uses are primarily undeveloped land
and residential.
Regional access to the project area is provided by Interstate 580 (I-580) an east -west
multi -lane freeway that provides service between the bay area and the Central Valley
area. Interstate 680 (I-680) provides access between the North Bay and the San Jose area
passing through Dublin west of the Moller Ranch site.
Existing Lane Configurations and Traffic Control. Existing intersection lane
configurations and traffic controls are illustrated in Exhibit 4.1-1. Traffic signals in the
study area are located at all study intersections.
Existing Peak Hour Turning Movement Volumes. Weekday intersection turning
movement volumes were collected at project study area intersections in April 2012.
Volumes are shown in Exhibit 4.1-2. Volumes were collected during the AM (7:00 AM
to 9:00 AM) and PM (4:00 PM to 6:00 PM) peak periods of the weekday when local
schools were in session and outside of holiday periods. Traffic volume data sheets for
new counts are available in the Appendix of this DSEIR. Standard practice regarding
preparation of traffic impact studies is to limit analysis to weekdays, so no weekend
traffic analysis was prepared.
Existing Average Daily Traffic Volumes. Weekday average daily traffic (ADT) volumes
were collected along Tassajara Road between project study area intersections in April
2012. Volumes are shown in Figure 5 of the full traffic report (see Appendix 8.6). ADT
Volumes were collected for 24 hours using mechanical tubes on a weekday when local
schools were in session and outside of holiday periods. Traffic volume data sheets for
new counts are available in the Appendix.
Existing Levels of Service at Study Intersections. Traffic operations were evaluated at
signalized intersections under existing traffic conditions. The following intersections
were analyzed in this DSEIR. The location of the jurisdiction within which the
intersection is noted in parenthesis.
1. Dougherty Road / Dublin Boulevard (City of Dublin)
2. Hacienda Drive / Dublin Boulevard (City of Dublin)
3. Tassajara Road / Highland Road (Contra Costa County)
4. Tassajara Road / Windemere Parkway (Contra Costa County)
5. Tassajara Road / Fallon Road (City of Dublin)
6. Tassajara Road/Silvera Ranch Drive (City of Dublin)
7. Tassajara Road / Gleason Drive (City of Dublin)
8. Tassajara Road / Central Parkway (City of Dublin)
9. Tassajara Road / Dublin Boulevard (City of Dublin)
10. Tassajara Road / I-580 Westbound Ramps (City of Pleasanton)
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 36
City of Dublin September 2012
11. Santa Rita Road / I-580 Eastbound Ramps -Pimlico Drive (City of
Pleasanton)
12. Fallon Road / Silvera Ranch Drive (City of Dublin)
13. Fallon Road / Cydonia Court (City of Dublin)
14. Fallon Road / Gleason Drive (City of Dublin)
15. Fallon Road / Central Parkway (City of Dublin)
16. Fallon Road / Dublin Boulevard (City of Dublin)
17. Fallon Road / I-580 Westbound Ramps (Caltrans)
18. El Charro Road / I-580 Eastbound Ramps (Caltrans)
19. Tassajara Road / Project Access (City of Dublin)
Based on the Standards of Significance standards identified later in the chapter,
intersections located in the City of Dublin are to operate at LOS D. Intersections located
in the City of Pleasanton are to operate at LOS D, as well. Contra Costa County
intersections are to operate at LOS D, with the exception of the intersection of Camino
Tassajara and Highland Road which is to operate at LOS C because it is a semi -rural
county intersection. Caltrans intersections are to operate at LOS C.
Results of the analysis are presented in Table 4.1-1 along with the minimum
jurisdictional standard for acceptable levels of service (as previously described in
Operating Conditions and Criteria). Additional detail of the analysis is provided in the
Appendix.
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 37
City of Dublin September 2012
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According to the analysis results, all intersections currently satisfy operational
standards, except at the following location:
• Santa Rita Road and I-580 Eastbound Ramps / Pimlico Drive
Existing Roadway Segment Analysis. Traffic operations were evaluated at roadway
segments listed as routes of regional significance as defined by the Alameda County
Transportation Commission and Metropolitan Transportation Commission, under
existing traffic conditions and are shown in Table 8 of the full traffic report (see
Appendix 8.6). ADT volumes for each roadway segment were compared to the ADT
threshold for that particular type of roadway as defined by the City of Dublin General
Plan. The maximum Average Daily Traffic threshold standards of the General Plan for
two-lane roadways (15,000 vehicles per day), four -lane roadways (30,000vpd), six -lane
roadways (50,000 vpd), and eight -lane roadways (70,000 vpd) are used to determine
the through lane requirements.
According to the analysis results, all roadway segments currently satisfy the above
standard.
A supplemental Land Use Analysis under the Congestion Management Program was
conducted to evaluate roadway segments in the Metropolitan Transportation System
under existing traffic conditions and are shown in Table 9 of the full traffic analysis. For
this roadway analysis, arterial average speeds were considered to determine LOS, not
volume thresholds listed in the City of Dublin General Plan. This difference in
methodology may result in Levels of Service that differ between the two roadway
segment analyses. Dublin Boulevard and Tassajara Road were the two arterials
analyzed, with both classified as Arterial Class I based on the free flow speed 35 mph or
more for each corridor. According to the analysis results, all roadway segments
currently satisfy threshold standards. Additional detail of the analysis is provided in
the Appendix. (Appendix 8.6)
Existing Level of Service at Freeway Segments. A supplemental Land Use Analysis
under the Congestion Management Program was conducted to evaluate freeway
segments in the Metropolitan Transportation System under existing traffic conditions.
Freeway volumes for the existing condition scenario were calculated by taking the
incremental difference in the Alameda CTC model volumes from year 2030 and year
2005 on each freeway segment to determine an annual growth. The annual growth rate
was then applied to the existing Caltrans counts taken in 2010 to grow to Existing 2012.
According to the analysis results shown in Table 10 of the traffic analysis, all freeway
segments satisfy operational standards, except at the following locations:
I-580 Eastbound from I-680 to Dougherty Road (PM Peak)
I-580 Westbound from Tassajara Road to Fallon Road (AM Peak)
I-580 Westbound from Fallon Road to Airway Boulevard (AM Peak)
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 39
City of Dublin September 2012
Note that these freeway segments fail the operational standards without traffic from
the proposed project.
Additional detail of the analysis is provided in Appendix 8.6.
Funding Programs. The Eastern Dublin Traffic Impact Fee (TIF) Program establishes a
funding source for infrastructure projects and improvements in Eastern Dublin, as well
as other areas of the city. The City of Dublin adopted this program through Resolution
111-04. The fees for developers of residential projects are calculated based on a per unit
fee. Fees are due and payable at the issuance of a Certificate of Occupancy.
The Tri-Valley Transportation Development (TVTD) fee establishes a funding source for
transportation improvement projects in the Tri-Valley Development Area. The fee for
residential developers shall be calculated based on the number of new residential
dwelling units.
The Eastern Dublin I-580 Interchange Fee established in Resolution No. 155-98, is a
funding source to reimburse the City of Pleasanton for impacts to local freeway
interchanges on the I-580 freeway that also benefit properties in Eastern Dublin. A
developer is required to pay the fees before the time of issuance of a Certificate of
Occupancy.
Existing transit service. Transit service to the Moller Ranch project area is
provided by the following:
The Livermore / Amador Valley Transit Authority (LAVTA) provides bus service in
Dublin and throughout the Tri-Valley. In the vicinity of the proposed project there are
no transit routes. Within the study area, the following routes pass through project study
intersections:
• The RAPID route runs along Dublin Boulevard within the study area. RAPID
offers access to Stonerridge Mall, Lawrence Livermore National Laboratory
(LLNL), Downtown Livermore, Dublin, and Dublin/Pleasanton BART. On
weekdays, westbound operations occur from 6:10 AM to 7:40 PM on 10 to 15-
minute headways. Weekday eastbound operations occur from 6:30 AM to 8:00
PM on 10 to 15-minute headways. There are bus stops located at Dublin
Boulevard and Hacienda Drive.
• On Saturdays, Route 1 offers limited service to Dublin/ Pleasanton BART and
Santa Rita Jail from 8:00 AM to 9:00 PM. The headway for this service is 20 to 40
minutes. There is a bus stop located at Dublin Boulevard and Hacienda Drive.
• Route 1A and Route 1B run along Dublin Boulevard, Santa Rita Road, and
Tassajara Road within the study area. These routes travel in a loop and provide
access to Dublin/Pleasanton BART, Rose Pavilion, Dublin/ Tassaj ara and Santa
Rita Jail. On weekdays, Route 1A offers morning service in the clockwise
direction from 6:00 AM to 11:30 AM on 30-minute headways. On weekdays,
Route 1B offers afternoon service in the counterclockwise direction from 12:00
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 40
City of Dublin September 2012
PM until 8:30 PM on 30 minute headways. Neither route operates on weekends.
There are bus stops located at Dublin Boulevard and Hacienda Drive.
Route 2 runs along Tassajara Road, Central Parkway, and Dublin Boulevard
within the study area. This route provides access to Dublin/Pleasanton BART,
Central / Killian, Tassajara Road / North Dublin Ranch, Fallon Middle School, and
Central / Aspen. On weekdays, Route 2 operates from 6:30 AM to 7:00 PM on 30-
minute headways. Route 2 does not operate on weekends.
Route 3 and Route 3V run along Dougherty Road and Dublin Boulevard within
the study area. Route 3 provides access to West Dublin BART, Stoneridge Mall,
Dublin/Pleasanton BART, Wells Middle School, Dublin High School, and
Shannon Park. Route 3V serves Shannon Park and travels northbound on Village
Parkway. On weekdays, Route 3 operates in the counter clockwise direction
from 6:20 AM to 7:20 PM on 1-hour headways. Route 3V operates in the counter
clockwise direction once at 8:20 AM at West Dublin BART. It operates again at
3:00 PM and 6:00 PM starting at Dublin/Pleasanton BART departure. Route 3
operates in the clockwise direction from 4:30 PM to 8:30 PM on 1-hour headways.
Route 3V operates in the clockwise direction once in the morning at 7:20 AM. On
Saturdays, Route 3 operates in the counterclockwise direction from 8:20 AM until
10:20 AM on 1-hour headways. On Saturdays, Route 3 offers operations in the
clockwise direction from 2:20 PM until 7:20 PM on 1-hour headways. These
routes do not operate on Sundays. There is a bus stop located at Dublin
Boulevard and Dougherty Road.
Route 10 runs along Dublin Boulevard within the study area but does not
operate in the study area while RAPID is operating. Route 10 provides access to
East/ Vasco LLNL, the Livermore Transit Center, Valley Care Livermore
Campus, Dublin/ Pleasanton BART, and Stonerridge Mall. On weekdays,
westbound service operates in the study area from 5:30 AM to 6:30 AM in 30-
minute headways and from 9:00 PM to 12:20 AM in 40-minute headways.
Weekday eastbound service operates in the study area from 5:30 AM to 6:00 AM
on 30-minute headways and from 8:30 PM to 12:50 AM on 30 to 40-minute
headways. On Saturdays, westbound operations within the study area occur
from 5:40 AM to 12:30 AM on 20 to 40-minute headways. Saturday eastbound
operations within the study area occur from 6:00 AM to 12:20 AM on 20 to 40-
minute intervals. On Sundays, westbound operations within the study area
occur from 5:50 AM to 12:00 AM on 30 to 40-minute headways. Sunday
eastbound operations occur from 7:40 AM to 12:20 AM on 40-minute headways.
On Christmas and Thanksgiving Days, westbound operations within the study
area occur from 6:10 AM to 11:50 PM on 40 to 100-minute Headways. Christmas
and Thanksgiving operations in the eastbound direction occur in the study area
from 8:50 AM to 7:00 PM on 50 to 80-minute headways.
Route 12 runs along Fallon Road and Dublin Boulevard within the study area.
Route 12 provides access to Livermore Transit Center, Valley Care Livermore
Campus, Airway Park and Ride, Las Positas College, and Dublin/Pleasanton
BART. On weekdays, westbound operations occur from 6:30 AM to 10:40 PM on
30 to 60 minute headways. Weekday eastbound operations occur from 6:30 AM
to 10:40 PM on 30 to 60 minute headways. On Saturdays, westbound operations
occur from 7:20 AM to 7:00 PM on 40 to 60 minute headways. Saturday
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 41
City of Dublin September 2012
eastbound operations occur from 7:20 AM to 7:00 PM on 40 to 60-minute
headways. There are no Sunday operations. There is a bus stop located at Dublin
Boulevard and Dougherty Road.
• Route 12V runs along Dublin Boulevard and Hacienda Drive within the study
area. Route 12V provides access to Livermore Transit Center, Valley Care
Livermore Campus, Airway Park and Ride, Las Positas College, and
Dublin/Pleasanton BART. On weekdays, westbound morning operations occur
from 6:10 AM to 8:40 AM on 40 to 60-minute headways while westbound
afternoon operations occur from 4:10 PM to 5:10 PM on 30-minute headways.
Weekday eastbound morning operations occur at 7:30 AM and 8:10 AM while
eastbound afternoon operations occur from 4:30 PM to 6:40 PM on 40 to 50-
minute headways. There are no weekend operations.
• Route 54 runs along Santa Rita Road, Tassajara Road, and Dublin Boulevard
within the study area. Route 54 provides access to Fairgrounds East, Koll Center
Parkway, CarrAmerica, Dublin/Pleasanton BART. On weekdays, morning
operations occur from 5:30 AM to 7:51 AM on 70-minute headways. Afternoon
operations occur from 4:20 PM to 5:20 PM on 1-hour headways. There are no
weekend operations. There is a bus stop located at Dublin Boulevard and
Hacienda Drive.
• Route 70X runs along Dublin Boulevard and Hacienda Drive within the study
area. Route 70X provides access to Dublin/Pleasanton BART, Walnut Creek
BART, Pleasant Hill BART, and Stoneridge Mall. On weekdays, morning
operations occur from 6:30 AM to 7:30 AM on 30-minute headways. Afternoon
operations occur from 3:30 PM to 6:00 PM on 30-minute headways. There are no
weekend operations. However, this schedule is operated on Martin Luther King
Day, Christmas Eve, New Year's Eve, Presidents' Day, and the day after
Thanksgiving Day.
• Route 201 runs along Dublin Boulevard, Hacienda Drive, Central Parkway,
Tassajara Road, and Fallon Road within the study area. Route 201 provides
access to Dublin High School from Antone, Tassajara, and Central Parkway. The
morning operation occurs at 7:10 AM while the afternoon operation occurs at
3:00 PM. There are no weekend operations.
• Route 202 runs along Dublin Boulevard within the study area. Route 202
provides access to Dublin High School from Central Parkway, Dougherty, and
Wildwood. The morning operation occurs at 7:20 AM while the afternoon
operation occurs at 3:00 PM.
• Route 604 runs through Pimlico Drive and Santa Rita Road within the study area.
Route 604 provides access to Foothill High School from the Fairlands, Hacienda
Business Park, Stoneridge, and Muirwood Park. The morning operation occurs at
7:15 AM while the afternoon operation occurs at 2:50 PM. There are no weekend
operations.
• Route 605 runs through Pimlico Drive and Santa Rita Road within the study area.
Route 605 provides access to Amador Valley High School from Fairlands and
Amaral Park. The morning operation occurs at 7:10 AM while the afternoon
operation occurs at 3:10 PM. There are no Saturday or Sunday operations.
• Route 610 runs through Pimlico Drive and Santa Rita Road within the study area.
Route 610 provides access to Hart Middle School from Fairlands. The morning
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 42
City of Dublin September 2012
operation occurs at 8:10 AM on Mondays, Tuesdays, Thursdays and Fridays. On
Wednesdays, the morning operation occurs at 9:00 AM. The afternoon weekday
operation occurs at 3:20 PM. There are no weekend operations.
The Central Contra Costa Transit Authority (CCCTA) or County Connection provides
fixed -route and paratransit bus service throughout the communities of Concord,
Pleasant Hill, Martinez, Walnut Creek, Clayton, Lafayette, Orinda, Moraga, Danville,
San Ramon, as well as unincorporated communities in Central Contra Costa County.
There are no transit routes adjacent to the proposed project. Through the study area,
the following routes pass through project intersections:
Route 35 runs along Dublin Boulevard within the study area. Route 35 provides
access to the San Ramon Transit Center and Dublin/Pleasanton BART for the
region east of I-680. On weekdays, southbound operations occur from 6:00 AM to
7:00 PM on 30 to 60-minute headways. Weekday northbound operations occur
from 6:45 AM to 7:45 PM on 30 to 60-minute headways. There are no weekend
operations.
Route 36 runs along Dublin Boulevard within the study area. Route 36 provides
access to the San Ramon Transit Center and Dublin/Pleasanton BART for the
region west of I-680. On weekdays, southbound operations occur from 6:20 AM
to 7:20 PM on 60-minute headways. Weekday northbound operations occur from
7:15 AM to 8:15 PM on 60-minute headways. There are no weekend operations.
Route 97X runs along Dublin Boulevard within the study area. Route 97X
provides access to Dublin/Pleasanton BART and the San Ramon Transit Center
via I-680. On weekdays, southbound operations occur from 6:30 AM to 6:10 PM
on 30-minute headways. Weekday northbound operations occur from 6:50 AM to
6:30 PM on 30-minute headways. There are no weekend operations.
Existing Bicycle and Pedestrian Facilities. There are no marked pedestrian facilities
adjacent to the proposed project site along Tassajara Road. However, there is a striped
and paved shoulder for bicycles on either side of Tassajara Road adjacent to the
project site. Within the study area, there are numerous bicycle and pedestrian facilities
providing access throughout the City of Dublin.
The Ironhorse Trail, a paved Class I bicycle facility, runs north -south and provides
access to multiple cities in the Tri-Valley area, as well as Concord to the north. A Class
I bike trail runs parallel to Dougherty Road on the east side and connects to the
Ironhorse Trail at Scarlett Drive. Tassajara Creek Trail is a Class I paved bike trail that
runs north -south parallel to Tassajara Road on the west side and then travels east -
west parallel to Dublin Boulevard on the north side where it connects to the Ironhorse
Trail. Another Class I bike facility runs along the west side of Fallon Road from north
of Tassajara Road to Gleason Drive.
Class II facilities are in place on other study area roadways including Dublin
Boulevard from Dougherty Road to east of Tassajara Road. There exists a Class II bike
facility on Tassajara Road from Dublin Boulevard to N. Dublin Ranch Drive. The City
has proposed to extend the facility from N. Dublin Ranch Drive to Fallon Road,
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 43
City of Dublin September 2012
although this is not part of the Moller Ranch project. There exists a Class II bike
facility on Gleason Drive from Arnold Road to Tassajara Road and from Brannigan
Street to Fallon Road. The City has proposed to extend the facility from Tassajara
Road to Brannigan Street which is not part of this project. There exists a Class II bike
facility on Central Parkway from Arnold Road to Fallon Road. There exists a Class II
bike facility on Fallon Road. There is currently no bike lane along Dougherty Road at
the intersection Dougherty Road and Dublin Boulevard; however, the City of Dublin
has proposed to install a Class II bike facility along Dougherty Road at this location,
which is not part of the Moller project.
IMPACTS AND MITIGATION MEASURES FROM THE EASTERN DUBLIN
EIR
The Eastern Dublin EIR analyzed the following impacts with regard to traffic and
transportation.
Freeways. The Eastern Dublin Environmental Impact Report (EIR) identified significant,
significant cumulative, and significant unavoidable adverse impacts related to daily
traffic volumes on I-580 for Year 2010 with and without build -out of the Eastern Dublin
Specific Plan and General Plan Amendment and under a Year 2010 cumulative build -out
scenario (Impacts 3.3/A, B, C, D, and E). The significance criteria for freeway segments
were operations that exceed level of service (LOS) E.
Mitigation measures (3.3/ 1.0 and 3.3/4.0) were adopted which reduced impacts on I-580
between Tassajara Road and Fallon Road and on I-680 north of I-580 to a level of
insignificance. Other mitigations (3.3 / 2.0, 2.1, 3.0 and 5.0) were adopted to reduce
impacts on the remaining I-580 freeway segments and the I-580 / 680 interchange. Even
with mitigations, however, significant cumulative impacts remained on I-580 freeway
segments between I-680 and Dougherty Road and, at the build -out scenario of 2010, on
other segments of I-580. Upon certification of the Eastern Dublin EIR and approval of the
Eastern Dublin GPA / SP, the City adopted a Statement of Overriding Considerations
(Resolution No. 53-93), for these significant unavoidable cumulative impacts (Impacts
3.3/B and E).
All mitigation measures adopted upon approval of the Eastern Dublin GPA and EDSP
continue to apply to implementing actions and projects such as the proposed Project.
Intersections and Roads. The Eastern Dublin EIR evaluated levels of service and PM peak
hour traffic volumes at 18 intersections with roads and I-580 ramps. The significance
criteria for intersections were operations that exceed LOS D. Mitigation measures were
identified for each intersection that was projected to exceed the LOS D standard in each
scenario. The following scenarios were analyzed:
1) Year 2010 without the Eastern Dublin project
2) Year 2010 with the Eastern Dublin project
3) Cumulative Buildout with the Eastern Dublin project
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 44
City of Dublin September 2012
Mitigation measures (3.3 / 6.0 — 8.0,10 -12) for impacts 3.3 / F, G, H, J, K and L were
adopted to reduce impacts to each of these intersections to a level of insignificance. These
mitigations include construction of additional lanes at intersections, coordination with
Caltrans and the neighboring cities of Pleasanton and Livermore to restripe, widen or
modify on -ramps and off -ramps and interchange intersections, and coordination with
Caltrans to modify certain interchanges. Development projects within the Eastern Dublin
project area contribute a proportionate share to the multi -jurisdictional improvements
through payment of traffic impact fees or construction of the required improvements for
a credit against payment of such fees.
Other mitigations (3.3/ 13.0 and 14.0) were adopted to reduce impacts on other identified
intersections with Dublin Boulevard and Tassajara Road (Impacts 3.3/M, N).
All mitigation measures adopted upon approval of the Eastern Dublin GPA/ SP and
Eastern Dublin EIR continue to apply to implementing actions and projects within
Eastern Dublin, such as the proposed Project. Individual development projects within the
GPA/SP area contribute a proportionate share to fund these improvements through
payment of traffic impact fees or construction of the required improvements for a credit
against payment of such fees. Even with mitigations, however, significant cumulative
impacts remained on several identified intersections: I-580 / 1-680 / Hacienda Drive
(Impact 3.3 / B); cumulative freeway impacts (Impact 3.3 / E), Santa Rita Road / I-580
Eastbound ramps (Impact 3.3 / I), Dublin Boulevard / Hacienda Drive and Dublin
Boulevard/Tassajara Road (Impact 3.3/M). Upon certification of the Eastern Dublin
Specific Plan EIR and approval of the Eastern Dublin GPA/SP, the City adopted a
Statement of Overriding Consideration (Resolution No. 53-93), for these significant
unavoidable and cumulative impacts.
Transit, Pedestrians and Bicyclists. The Eastern Dublin EIR identified significant impacts
related to transit service extensions and the provision of safe street crossings for
pedestrians and bicycles (Impacts 3.3/ O and P). Mitigation measures 3.3/ 15.0 —15.3 and
16.0 —16.1 were adopted which reduced these impacts to a level of insignificance. These
mitigations generally require coordination with transit providers to extend transit
services (for which the GPA/SP projects contribute a proportionate share through
payment of traffic impact fees) and coincide pedestrian and bicycle paths with signals at
major street crossings. All mitigation measures adopted upon approval of the Eastern
Dublin GPA / SP and Eastern Dublin EIR continue to apply to implementing actions and
projects such as the proposed Project.
IMPACTS AND MITIGATION MEASURES FROM THE CASAMIRA VALLEY
SUPPLEMENTAL EIR
The Casamira Valley Supplemental EIR analyzed the following impacts with regard to
traffic and transportation.
• Supplemental Impact TRA-la found that, in the year 2025, traffic
generated by buildout of the proposed project along with other buildout
traffic, would cause the Dougherty Road/Dublin Boulevard intersection
to operate at an unacceptable level of service during the p.m. peak hour.
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 45
City of Dublin September 2012
Although this supplemental impact was partially mitigated by adherence
to Supplemental Mitigation Measure SM-TRA-1a, which required
developer contribution to improve this intersection, this would remain a
significant and unavoidable impact.
Supplemental Impact TRA-lb found that, in the year 2025, traffic
generated by buildout of the proposed project along with other buildout
traffic, would cause the Santa Rita Road/I-580 eastbound ramp
intersection to operate at an unacceptable level of service during the p.m.
peak hour. Adherence to Supplemental Mitigation Measure SM-TRA-lb
requires the Project developer to contribute a pro-rata share of the cost to
improve the Santa Rita Road / I-589 east bound ramp intersection and
Pimlico Drive. This reduced Supplemental Impact TRA 1b to a less -than -
significant level.
Supplemental Impact TRA-2 found that the proposed project would
contribute additional traffic to Tassajara Road adjacent to the proposed
project. This includes the segment of Tassajara Road between Northern
Access for Dublin Ranch West and Fallon Road and the segment of
Tassajara Road between North Dublin Ranch Drive and Northern Access
for Dublin Ranch West. Adherence to Supplemental Mitigation Measure
SM-TRA-2 requires the project developer to construct improvements
along Tassajara Road adjacent to the Project site as well as other
developers to make appropriate road improvements in the area. These
actions would reduce this supplemental impact to a less -than -significant
level.
• Supplemental Impact TRA-3 noted that project traffic, along with the
buildout of other projects in Eastern Dublin, would impact traffic on local
freeways. Improvements identified in the DSEIR would reduce this
impact but not to a less -than -significant level, so this impact remained
significant and unavoidable.
STANDARDS OF SIGNIFICANCE
The following standards are used in this DSEIR.
City of Dublin Intersections. An impact would be significant if an intersection
operating at an acceptable level of service without the project would exceed acceptable
levels with the addition of project traffic. In addition, an impact would be significant if a
new intersection is identified as exceeding acceptable levels and if such intersection was
not previously identified in the Eastern Dublin EIR as a study intersection. The General
Plan standard requires that the City strive for LOS D at intersections (General Plan
Circulation and Scenic Highways Guiding Policy Fl). An impact would also be
significant if an intersection is already operating below an acceptable threshold and the
project worsens the condition.
General Plan Circulation and Scenic Highways Guiding Policy F, City of Dublin General Plan,
March 2012.
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 46
City of Dublin September 2012
City of Pleasanton Intersections. The City of Pleasanton outlines their level of service
standards (LOS) in the City of Pleasanton General Plan'. The standard is to limit traffic
volumes to LOS D or better. However there are a few exceptions to the LOS standard,
which includes the City of Pleasanton gateway intersections. These intersections may
have a LOS below LOS D if there is no reasonable mitigation possible or if the necessary
mitigation conflicts with other goals and policies of the City of Pleasanton.
Caltrans Intersections. Caltrans level of service standards (LOS) is contained in
the Caltrans Guide for the Preparation of Traffic Impact Studies'. The standard is
to maintain a LOS between the transition of LOS C and LOS D. If the existing
facility is operating at less than the target LOS, the existing measures of
effectiveness (MOE) should be maintained. For intersections, delay is the MOE.
Contra Costa County Intersections. CCTA set maximum levels of congestion for routes
of regional significance such as intersections along Camino Tassajara. According to the
CCTA requirements, volume to capacity (V / C) up to 0.85 (i.e. LOS D) is an acceptable
level of traffic operation at intersections on the routes of regional significance in the
study area regardless of how the intersections are currently operating. Furthermore,
intersections to be evaluated under CCTA requirements include signalized intersections
that are expected to be affected by 50 or more project trips in a peak period.
At the intersection of Camino Tassajara and Highland Road, the LOS threshold is LOS
C, not LOS D. This intersection is regarded as a semi -rural intersection and therefore
has a more stringent performance threshold as identified by Contra Costa County in the
Addendum to the Proposed Creekside Cemetery Project`.
Unsignalized intersections are not specifically covered in the CCTA or General Plan
requirements; however, in harmony with the intent of the General Plan, this report
considered a "High D" level of service (LOS) to be an acceptable level of operation at
unsignalized intersections.
Metropolitan Transportation System Roadways. The Alameda County Transportation
Commission uses methods outlined in the 1985 HCM to determine LOS for various
roadways. Tables 5 and 6 contained in the full traffic report (Appendix 8.6) relate the
operational characteristics associated with each level of service category for arterials
and freeways, respectively. Arterial Class I exhibits a range of free flow speeds from 35
mph to 45 mph. Arterial Class II exhibits a range of free flow speeds from 30 mph to 35
mph. Arterial Class III exhibits a range of free flow speeds from 25 mph to 35 mph.
2 Circulation Element. Pleasanton General Plan 2005-2025. July 2009.
3 Guide for the Preparation of Traffic Impact Studies. Caltrans. December 2002.
4 An Addendum Traffic Analysis for the Proposed Creekside Cemetery Project to Address Contra Costa
County Staff comments dated February 17, 2011, Vishnu Gandluru, May 2011.
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 47
City of Dublin September 2012
The established standard for a segment of road set forth in the California Government
Code Section 65089 (b) (1) (B) is LOS E or at the current level, whichever is further from
LOS A.5
Queuing. The effects of vehicle queuing were also analyzed and the 95th percentile
queue is reported for all study intersections. The 95th percentile queue length
represents a condition where 95 percent of the time during the peak period, traffic
volumes and related queuing will be at, or less, than the queue length determined by
the analysis. This is referred to as the "95th percentile queue." Average queuing is
generally less. Excessive queuing is considered a potentially significant impact since
queues that exceed turn pocket length can create potentially hazardous conditions by
blocking or disrupting through traffic in adjacent travel lanes. However, these
potentially hazardous queues are generally associated with left -turn movements.
Locations where the right turn pocket storage is exceeded is not considered potentially
hazardous because the right turn movement may go at the same time as the through
movement and the additional vehicles that spill out over the turn pocket will not be
hindering or disrupting the adjacent through traffic as would be the case in most left
turn pockets. Thus, for purposes of this analysis, a significant queuing impact was
considered to occur under conditions where project traffic causes the queue in a left
turn pocket to extend beyond the turn pocket by 25 feet or more (i.e., the length of one
vehicle) into adjacent traffic lanes that operate (i.e., move) separately from the left turn
lane. Where the vehicle queue already exceeds that turn pocket length under pre -project
conditions, a significant impact would occur if project traffic lengthens the queue by 25
feet or more.
Routes of Regional Significance. An impact would be significant if such routes would
fail to comply with the applicable standard of the City of Dublin General Plan. The
General Plan requires the City to make a good faith effort to maintain LOS D on arterial
segments of, and at the intersections of, routes of regional significance (for example,
Tassajara Road) or implement transportation improvements or other measures to
improve the level of service. If such improvements are not possible or sufficient, and the
Tri-Valley Transportation Council cannot resolve the matter, the City may modify the
level of service standard assuming other jurisdictions are not physically impacted
(General Plan Circulation and Scenic Highways Guiding Policy E).
The maximum Average Daily Traffic (ADT) threshold standards of the General Plan for
two-lane roadways (15,000 vehicles per day (vpd)), four -lane roadways (30,000 vpd),
six -lane roadways (50,000 vpd), and eight -lane roadways (70,000 vpd) are used to
determine the through lane requirements.
Freeway Segments. The standard for freeway impacts is based upon the Alameda
County Congestion Management Agency' (ACCMA) monitoring standards and is
established at LOS E. An impact would be significant if the project causes the freeway
segment to drop below LOS E. An impact would also be significant if a freeway
Congestion Management Program 2011, Alameda County Transportation Commission,
December 2011.
' Congestion Management Program 2011, Alameda County Transportation Commission,
December 2011,
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 48
City of Dublin September 2012
segment is already operating below an acceptable threshold and a project worsens the
condition by adding additional traffic.
SUPPLEMENTAL IMPACTS AND MITIGATION MEASURES
Introduction. This section assesses whether significant new or intensified traffic impacts
may result from increasing regional traffic, or changed traffic distribution in the project
area.
Moiler Ranch Project Trip Generation, Pass -By Trips and Trip Distribution. Trip
generation for development projects is typically calculated based on rates contained in
the Institute of Transportation Engineer's publication, Trip Generation 8th Edition'
Trip Generation is a standard reference used by jurisdictions throughout the country for
the estimation of trip generation potential of proposed developments.
A trip is defined in Trip Generation as a single or one -directional vehicle movement
with either the origin or destination at the project site. In other words, a trip can be
either "to" or "from" the site. In addition, a single visit to a site is counted as two trips
(i.e., one to and one from the site).
For purposes of determining the worst -case impacts of traffic on the surrounding street
network, the trips generated by a proposed residential development are typically
estimated for the highest one hour during each of the periods between 7:00-9:00 AM
and 4:00-6:00 PM. At other times of the day residential land uses rarely cause impacts.
For this reason, this evaluation focused on the weekday AM and PM peaks. This
methodology is consistent with the City of Dublin's standard for the preparation of
traffic impact studies.
Trip generation calculations prepared per ITE methodology are based on the number of
dwelling units in the proposed project. Single-family detached housing includes all
single-family detached homes on individual lots.
Trip generation was calculated based on the previous discussions and is reported in
Table 4.1-2 Additional trip generation calculations are contained in Appendix 8.6.
' Trip Generation, 81h Edition, Institute of Transportation Engineers, 2008.
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 49
City of Dublin September 2012
Table 4.1-2. Project Trip Generation
TIME
Trip Rate
Trips
PERIO
LAND USE
D
In
Out
Total
In
Out
Total
Single -Family
AM Peak
Detached
Housing
0.19
0.56
0.75
72
214
286
(381 DU)
Single -Family
PM Peak
Detached
Housing
0.64
0.37
1.01
243
142
385
(381 DU)
Single -Family
Daily
Detached
_
9.57
-
-
3,648
Housing
(381 DU)
Note: The average trip generation rates were used.
Source: Kimley-Horn Associates, 2012
Project Trip Pass -By The Moller Ranch project, like similar residential land uses
in ITE, does not have any pass -by trips.
Project Trip Distribution and Assignment. A project distribution was developed based
on distributions prepared in the previous traffic report for the Casamira Valley
Supplemental EIR', existing traffic count information and the general orientation of the
project site to nearby commercial and office land uses. Trip distribution percentages
show 76% of the trips entering and leaving the City of Dublin. The remaining 24 % is
distributed within the City of Dublin at commercial and office land uses.
Based on the assumed trip distribution, vehicle trips generated by the Moller Ranch
development were assigned to the street network. Generally, vehicles were assigned to
the roadway network based on the shortest path from origin to destination. However,
in some instances, vehicles will stop at interim destinations, such as schools, day care,
coffee shops and then and then continue on to the final destination. These trips account
for a minimal percentage of the overall trip assignment (i.e. one to two trips for each
movement).
Existing Plus Project Level of Service Conditions. Existing Plus Project traffic
conditions were evaluated at the study intersections and are shown in Figure 12 of the
full traffic report. As shown in Table 4.1-3, all intersections function within acceptable
standards under the Existing Plus Project condition, except at the following location:
Traffic Study for the Proposed Casamira Valley Development, Kimley-Horn and Associates, Inc.,
February 2006.
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 50
City of Dublin September 2012
• Santa Rita Road and I-580 Eastbound Ramps / Pimlico Drive (Significant unless
no reasonable mitigation is available or if the necessary mitigation conflicts with
other goals and policies of the City of Pleasanton)
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 51
City of Dublin September 2012
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The intersection of Santa Rita Road and I-580 Eastbound Ramps/Pimlico Drive is a
gateway intersection. The main movements with high delay are the westbound left
turn movement and the southbound left turn movement. At this intersection,
optimizing traffic signal timing will not mitigate the intersection to operate at LOS D.
To increase the capacity of either of these two movements would require the widening
of the westbound and/or southbound approaches which would likely include right-of-
way acquisition from private properties, non-standard design features, and/or bridge
widening which are not consistent with the Pleasanton General Plan.
Gateway intersections may have a LOS below LOS D if there is no reasonable
mitigation possible or if the necessary mitigation conflicts with other goals and policies
of the City of Pleasanton. Because there does not appear to be a reasonable solution a
level of service below LOS D was considered to be acceptable and a significant impact is
not assumed.
Existing Plus Project Roadway Segment Analysis. Traffic operations were evaluated at
roadway segments listed as routes of regional significance under Existing Plus Project
traffic conditions and are shown in Figure 9 of the full traffic analysis. ADT volumes for
the Existing Plus Project scenario were calculated by adding the daily trips generated by
the proposed project to existing counts. ADT volumes for each roadway segment were
compared to the ADT threshold for that particular type of roadway as defined by the
City of Dublin General Plan.
According to the analysis results shown in Table 13 of the full traffic analysis, all
roadway segments currently satisfy operational standards.
A supplemental Land Use Analysis under the Congestion Management Program was
conducted to evaluate roadway segments in the Metropolitan Transportation System
under Existing Plus Project traffic conditions and are shown in Table 14. For this
analysis, arterial average speeds were considered to determine LOS, not volume
thresholds listed in the City of Dublin General Plan. This difference in methodology
may result in Levels of Service that differ between the two roadway segment analyses.
Dublin Boulevard and Tassajara Road were the two arterials analyzed, with both
classified as Arterial Class I based on the free flow speed 35 mph or more for each
corridor. According to the analysis results, all roadway segments satisfy operational
standards.
Additional detail of the analysis is provided in Appendix 8.6.
Existing Plus Project Level of Service at Freeway Segments. A supplemental Land Use
Analysis under the Congestion Management Program was conducted to evaluate
freeway segments in the Metropolitan Transportation System under Existing Plus
Project traffic conditions. Freeway volumes for the Existing Plus Project scenario were
calculated by adding the project volumes to the Existing condition volumes.
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 53
City of Dublin September 2012
According to the analysis results shown in Table 15 of the full traffic report, all freeway
segments satisfy operational standards, except at the following locations:
• I-580 Eastbound from I-680 to Dougherty Road (PM Peak) — Significant Impact
• I-580 Westbound from Hacienda Drive to Tassajara Road (AM Peak) — Significant
Impact
• I-580 Westbound from Tassajara Road to Fallon Road (AM Peak)
• I-580 Westbound from Fallon Road to Airway Boulevard (AM Peak) — Significant
Impact
Note that these freeway segments fail the operational standards without traffic from the
proposed project, except the segment of I-580 Westbound from Hacienda Drive to
Tassajara Road. After the project traffic is added, the roadway segments degrade
further and therefore are considered significant impacts.
The freeway segment on I-580 Westbound from Tassajara Road to Fallon Road is not
considered a significant impact because the project does not add any further traffic to
the failing condition.
Additional detail of the analysis is provided in the Appendix.
Planned Roadway Improvements. Roadway improvements within the study area and
scheduled for completion as facilitated by the City of Dublin prior to or at
approximately the same time as the completion of the Moller Ranch development (e.g.,
late 2015) were accounted for in the Near -term scenario. The following roadway
improvements are scheduled to be completed prior to the proposed project's opening:
• Central Parkway, east of Fallon Road will be constructed.
• At the intersection of Fallon Road and Dublin Boulevard, one northbound left
turn lane will be restriped as an additional northbound through lane.
• At the intersection of Tassajara Road and the project driveway, an east leg will be
operational, providing access to Moller Ranch.
Near -Term Lane Configurations and Traffic Control. Figure 10 contained in the full
traffic analysis (Appendix 8.6) illustrates the roadway geometry and traffic control
planned by the City of Dublin regardless of the proposed Moller Ranch development.
The TIF-funded improvements are anticipated to be in place before or at approximately
the same time as the proposed opening of the Moller Ranch development in late 2015.
Approved / Pending Development Projects in Vicinity of Site. Several development
projects in the vicinity of the Moller Ranch development are in various stages of
planning, approval, or development. These include projects that are reasonably
foreseeable in the future and will ultimately be developed roughly the same time or
following the Moller Ranch development. Since the City of Dublin recently updated its
travel demand forecast model, these pending and approved projects are accounted for
in the model. Therefore, under direction of the City of Dublin, the Dublin travel forecast
model was used to determine near -term volumes.
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 54
City of Dublin September 2012
The Dublin travel forecast model was used to plot bi-directional AM and PM traffic
volumes on each segment of the roadways in the study area. Model output was used to
compare year 2011 with year 2035 model forecasts to determine the yearly incremental
difference in traffic volumes at study intersections. However at specific locations,
particularly in the east side of Dublin where there is expected to be more growth, but
which is anticipated to occur after 2020, the 2020 interim model better predicts volume
growth. This model shows a more modest growth rate for segments along Fallon Road,
particularly at Dublin Boulevard. Therefore the 2020 interim model was used to project
trip volumes at the following intersections:
• Fallon Road and Gleason Drive
• Fallon Road and Central Parkway
• Fallon Road and Dublin Boulevard
• Fallon Road and I-580 WB Ramps
• El Charro Road and I-580 EB Ramps
Year 2015 turning movement volumes were calculated by adding the 3-year incremental
difference in bi-directional roadway segment (i.e., link) volumes to the existing 2012
link volumes, and then performing a Furness adjustment to generate future year
turning movement volumes.
At some of the intersections in the Long-term cumulative forecast model (i.e. the
intersection of Tassajara Road and I-580 WB Ramps), the volumes decrease from the
existing 2011 year to the future 2035 year. This can be explained by the extra capacity
from the Fallon Road interchange to the east. Therefore there are specific movements
where the volume may decrease in the Long-term scenario. In other instances where the
volumes should not decrease, the movement volumes were manually locked at the
existing movement volumes to prevent movements from decreasing if it was not
reflected in the model.
These volumes were checked to determine if they included the two major pending and
approved projects in the area:
• Stoneridge Drive Specific Plan / Staples Ranch
• El Charro Specific Plan
The Dublin travel forecast model also included the two intersections along Camino
Tassajara, even though they are not within the City of Dublin's jurisdiction. Therefore, it
was determined for consistency and connectivity throughout the study area; the Dublin
forecast model would solely be used for this study.
The City of Dublin forecast model information is included in Appendix 8.6.
Near -Term (2015) Traffic Conditions. Traffic operations were evaluated under the
following development conditions:
Near -Term Traffic Conditions
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 55
City of Dublin September 2012
• Near -Term Plus Project Traffic Conditions
Results of the analysis are presented in Table 4.1.3. Additional detail is provided in
Appendix 8.6.
Near -Term Level of Service Traffic Conditions. Existing traffic volumes, combined with
vehicle trips expected to be generated by the approved and pending development
projects, were evaluated at the study intersections and volumes can be seen in Figure 11
included in Appendix 8.6. As shown in Table 4.1-4, all study intersections function
within acceptable standards, except at the following locations:
Hacienda Drive and Dublin Boulevard9
Santa Rita Road and I-580 Eastbound Ramps/Pimlico Drive
Note that these intersections fail the operational standards without traffic from the
proposed project.
Near -Term Roadway Segment Anal. Traffic operations were evaluated at roadway
segments listed as routes of regional significance under Near -term traffic conditions.
ADT volumes for the Near -term Plus Project scenario were calculated by adding the
daily trips generated by the proposed project to Near -term volumes. n
According to the analysis results shown in Table 17 of the full traffic analysis all
roadway segments would satisfy operational standards.
9 This near -term impact appears to be generated as a result of the City's travel forecast model
reallocating trips along Dublin Boulevard because of 1-580 freeway congestion. This may not
actually occur in the near -term as proiected by the forecast model.
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 56
City of Dublin September 2012
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conducted to evaluate roadway segments in the Metropolitan Transportation System
using the Alameda CTC Countywide model under Near -term traffic conditions and is
shown in Table 18 of the full traffic analysis. For this specific Metropolitan
Transportation System roadway analysis, Near -term volumes were calculated using the
same process as for the Near -term volumes for the intersection analysis, with the only
difference being the use of the Alameda CTC Countywide model, not the Dublin travel
forecast model.
The Alameda CTC Countywide model was used to plot bi-directional AM and PM
traffic volumes on each segment of the roadways in the study area. Model output was
used to compare year 2005 with year 2015 model forecasts to determine the yearly
incremental difference in traffic volumes at study intersections. Year 2015 turning
movement volumes were calculated by adding the 3-year incremental difference in bi-
directional roadway segment (i.e., link) volumes to the existing 2012 link volumes, and
then performing a Furness adjustment to generate future year turning movement
volumes.
For this analysis, arterial average speeds were considered to determine LOS, not
volume thresholds listed in the City of Dublin General Plan. This difference in
methodology may result in Levels of Service that differ between the two roadway
segment analyses. Dublin Boulevard and Tassajara Road were the two arterials
analyzed, with both classified as Arterial Class I based on the free flow speed 35 mph or
more for each corridor.
According to the analysis results shown in Table 18, all roadway segments currently
satisfy operational standards.
Additional detail of the analysis is provided in Appendix 8.6.
Near -term Level of Service at Freeway Segments. A supplemental Land Use Analysis
under the Congestion Management Program was conducted to evaluate freeway
segments in the Metropolitan Transportation System under Near -term traffic
conditions. Freeway volumes for the Near -term scenario were calculated by taking the
incremental difference in the Alameda CTC model volumes from year 2030 and year
2005 on each freeway segment to determine an annual growth. The annual growth rate
was then applied to the existing Caltrans counts taken in 2010 to grow to Near -term
2015.
According to the analysis results shown in Table 19 of the full traffic analysis, all
freeway segments satisfy operational standards, except at the following locations:
• I-580 Eastbound from I-680 to Dougherty Road (PM Peak)
• I-580 Westbound from Hacienda Drive to Tassajara Road (AM Peak)
• I-580 Westbound from Tassajara Road to Fallon Road (AM Peak)
• I-580 Westbound from Fallon Road to Airway Boulevard (AM Peak)
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 58
City of Dublin September 2012
Note that these freeway segments fail the operational standards without traffic from the
proposed project.
Additional detail of the analysis is provided in Appendix 8.6.
Near Term Plus Project LOS Traffic Conditions. Near -Term Plus Project traffic
conditions were evaluated at the study intersections and volumes. As shown in Table
4.1-5 all study intersections function within acceptable standards, except at the
following locations:
• Hacienda Drive and Dublin Boulevard (significant impact)
• Santa Rita Road and I-580 Eastbound Ramps / Pimlico Drive
The intersection of Santa Rita Road and I-580 Eastbound Ramps / Pimlico Drive is a
gateway intersection. The main movements with high delay are the westbound left
turn movement and the southbound left turn movement. At this intersection,
optimizing traffic signal timing will not mitigate the intersection to operate at LOS D.
To increase the capacity of either of these two movements would require the widening
of the westbound and/or southbound approaches which would likely include right-of-
way acquisition from private properties, non-standard design features, and/or bridge
widening which are not considered reasonable solutions.
Gateway intersections may have a LOS below LOS D if there is no reasonable
mitigation possible or if the necessary mitigation conflicts with other goals and policies
of the City of Pleasanton. Because there does not appear to be a reasonable solution a
level of service below LOS D was considered to be acceptable and a significant impact is
not assumed.
Near -Term Plus Project Roadway Segment Analysis. Traffic operations were evaluated
at roadway segments listed as routes of regional significance under Near -term Plus
Project traffic conditions and are shown in Figure 14 contained in Appendix 8.6. ADT
volumes for the Near -term Plus Project scenario were calculated by taking the
percentage of peak hour volumes to daily volumes for the existing counts and applying
that same percentage to the Near -term Plus Project peak hour volumes. ADT volumes
for each roadway segment were compared to the ADT threshold for that particular type
of roadway as defined by the City of Dublin General Plan.
According to the analysis results shown in Table 21 of the full traffic report, all roadway
segments satisfy operational standards, except at the following location:
Tassajara Road from Fallon Road to the County limit (significant impact)
A supplemental Level of Service analysis under the Congestion Management Program
was conducted to evaluate roadway segments in the Metropolitan Transportation
System under Near -term Plus Project traffic conditions and are shown in Table 22 of the
full traffic report. Project volumes were added on top of the Near -term volumes
generated by the Alameda CTC model described in the Near -term without Project
section. For this analysis, arterial average speeds were considered to determine LOS,
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 59
City of Dublin September 2012
not volume thresholds listed in the City of Dublin General Plan. This difference in
methodology may result in Levels of Service that differ between the two roadway
segment analyses. Dublin Boulevard and Tassajara Road were the two arterials
analyzed, with both classified as Arterial Class I based on the free flow speed 35 mph or
more for each corridor.
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 60
City of Dublin September 2012
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According to the analysis results shown in Table 22, all roadway segments currently
satisfy operational standards.
Additional detail of the analysis is provided in Appendix 8.6.
Near -term Plus Project Level of Service at Freeway Segments. A supplemental Level of
Service Analysis under the Congestion Management Program was conducted to
evaluate freeway segments in the Metropolitan Transportation System under Near -term
Plus Project traffic conditions. Freeway volumes for the Near -term Plus Project scenario
were calculated by adding the project volumes to the Near -term condition volumes.
According to the analysis results shown in Table 23 of the full traffic report, all freeway
segments satisfy operational standards, except at the following locations:
• I-580 Eastbound from I-680 to Dougherty Road (PM Peak) — Significant Impact
• I-580 Westbound from Hacienda Drive to Tassajara Road (AM Peak) — Significant
Impact
• I-580 Westbound from Tassajara Road to Fallon Road (AM Peak)
• I-580 Westbound from Fallon Road to Airway Boulevard (AM Peak) — Significant
Impact
Note that these freeway segments fail the operational standards without traffic from the
proposed project, except the segment of I-580 Westbound from Hacienda Drive to
Tassajara Road. After the project traffic is added, the roadway segments degrade
further and therefore are considered significant impacts.
The freeway segment on I-580 Westbound from Tassajara Road to Fallon Road is not
considered a significant impact because the project does not add any further traffic to
the failing condition.
Additional detail of the analysis is provided in Appendix 8.6.
Long -Term (Year 2035) Cumulative Traffic Conditions.
Long -Term Cumulative Lane Configurations and Traffic Control. Transportation
improvements are anticipated by City staff for the study area intersections for the year
2035. According to the City of Dublin, the following roadway or intersection
improvements are planned and have identified funding sources.
At the intersection of Dublin Boulevard and Hacienda Drive, one northbound
right turn lane will be restriped as an additional northbound through lane.
At the intersection of Tassajara Road and Fallon Road, an additional southbound
through lane and southbound right turn lane will be constructed. In addition, the
southbound right will be a free movement. Two additional eastbound left turn
lanes will be constructed and an additional northbound through lane.
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 62
City of Dublin September 2012
• At the intersection of Tassajara Road and Silvera Ranch Drive, the west leg will
be constructed for Wallis Ranch Drive. The northbound and southbound through
movements will be widened to three lanes in each direction.
• At the intersection of Tassajara Road and Gleason Drive, the roadway will be
widened to two lanes in each direction for the eastbound and westbound
approaches.
• At the intersection of Tassajara Road and Dublin Boulevard, the northbound
through movement will be widened to four lanes with an additional northbound
right turn lane. The eastbound and westbound through movements will be
widened to three lanes in each direction.
• At the intersection of Tassajara Road and I-580 WB Ramps, the northbound
through movement will be widened to three lanes.
• At the intersection of Fallon Road and Silvera Ranch Drive, the northbound and
southbound through movements will be widened to two lanes each direction.
• At the intersection of Fallon Road and Cydonia Court, the northbound and
southbound through movements will be widened to two lanes each direction.
• At the intersection of Fallon Road and Central Parkway, the northbound through
movement will be widened to three lanes.
• At the intersection of Fallon Road and Dublin Boulevard, the northbound and
southbound through movements will be widened to four lanes each direction.
There will be an additional southbound left turn lane and an additional two
northbound left turn lanes. The eastbound and westbound through movements
will be widened to three lanes each direction. There will be an additional
eastbound left turn lane and an additional two westbound left turn lanes.
• At the intersection of Fallon Road and I-580 WB Ramps, the northbound and
southbound through movements will be widened to three lanes.
• At the intersection of El Charro Road and I-580 EB Ramps, the northbound and
southbound through movements will be widened to three lanes. An additional
eastbound right turn lane will be constructed.
• At the intersection of Tassajara Road and the project driveway, the northbound
and southbound through movements will be widened to three lanes.
All of these improvements reflect the ultimate lane configurations for the City of
Dublin.
Figure 15 contained in the full traffic analysis (Appendix 8.6) illustrates the intersection
geometry and traffic control assumed in the long-term analysis.
Year 2035 Cumulative Forecast. Dublin travel forecast was obtained for model
information. The model was used to plot bi-directional AM and PM traffic volumes on
each segment of the roadways in the study area. Model output was used to compare
year 2011 with year 2035 model forecasts to determine the incremental difference in
traffic volumes at study intersections.
Year 2035 cumulative turning movement volumes were calculated by adding the
incremental difference in bi-directional roadway segment (i.e., link) volumes to the
existing 2012 link volumes, and then performing a Furness adjustment to generate
future year turning movement volumes.
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 63
City of Dublin September 2012
At some of the intersections in the Long-term forecast model (i.e. the intersection of
Tassajara Road and I-580 WB Ramps), the volumes decrease from the existing 2011 year
to the future 2035 year. This can be explained by the extra capacity from the Fallon
Road interchange to the east. Therefore there are specific movements where the volume
may decrease in the Long-term scenario. In other instances where the volumes should
not decrease, the movement volumes were locked at the existing movement volumes to
prevent movements from decreasing if it was not reflected in the model.
The City of Dublin forecast model information is included in Appendix 8.6.
Long -Term Cumulative LOS Traffic Conditions. Traffic operations were evaluated
under the following long-term development conditions:
• Long -Term (2035) Without Project Traffic Conditions
• Long -Term (2035) With Project Traffic Conditions
Results of the analysis are presented in Table 4.1-5. Additional detail is provided the
Appendix 8.6.
Long -Term Cumulative Without Project Level of Service Traffic Conditions. Long-term
cumulative traffic conditions (based on the City's model traffic forecasts) were
evaluated at the study intersections and volumes can be seen in Figure 16 of the full
traffic report (see Appendix 8.6). As shown in Table 4.1-5, the following intersections do
not function within acceptable standards in the long-term cumulative condition:
• Dougherty Road and Dublin Boulevard
• Hacienda Drive and Dublin Boulevard
• Tassajara Road and Dublin Boulevard
• Santa Rita Road and I-580 Eastbound Ramps / Pimlico Drive
• Fallon Road and Dublin Boulevard
Intersections operating below acceptable thresholds under the long-term condition will
occur regardless of the approval and development of the proposed Moller Ranch
development.
Long -Term Cumulative Roadway Segment Analysis. Traffic operations were evaluated
at roadway segments listed as routes of regional significance under Long-term
cumulative traffic conditions and are shown in Figure 17 of the full traffic analysis (see
Appendix 8.6). ADT volumes for the Long-term scenario were calculated by taking the
percentage of peak hour volumes to daily volumes for the existing counts and applying
that same percentage to the long-term peak hour volumes. ADT volumes for each
roadway segment were compared to the ADT threshold for that particular type of
roadway as defined by the City of Dublin General Plan. ADT volumes for each roadway
segment were compared to the ADT threshold for that particular type of roadway as
defined by the City of Dublin General Plan.
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 64
City of Dublin September 2012
According to the analysis results shown in Table 25 of the full traffic analysis, all
roadway segments currently satisfy operational standards, except at the following
location:
• Tassajara Road from I-580 to Dublin Boulevard
A supplemental Land Use Analysis under the Congestion Management Program was
conducted to evaluate roadway segments in the Metropolitan Transportation System
using the Alameda CTC Countywide model under Long-term traffic conditions and is
shown in Table 26 of the full traffic analysis. For this specific Metropolitan
Transportation System roadway analysis, Long-term volumes were calculated using the
same process as for the Long-term volumes for the intersection analysis, with the only
difference being the use of the Alameda CTC Countywide model, not the Dublin travel
forecast model.
The Alameda CTC Countywide model was used to plot bi-directional AM and PM
traffic volumes on each segment of the roadways in the study area. Model output was
used to compare year 2005 with year 2035 model forecasts to determine the yearly
incremental difference in traffic volumes at study intersections. Year 2035 turning
movement volumes were calculated by adding the incremental difference in bi-
directional roadway segment (i.e., link) volumes to the existing 2012 link volumes, and
then performing a Furness adjustment to generate future year turning movement
volumes.
For this analysis, arterial average speeds were considered to determine LOS, not
volume thresholds listed in the City of Dublin General Plan. This difference in
methodology may result in Levels of Service that differ between the two roadway
segment analyses. Dublin Boulevard and Tassajara Road were the two arterials
analyzed, with both classified as Arterial Class I based on the free flow speed 35 mph or
more for each corridor.
According to the analysis results, the following roadway segments do not satisfy
operational standards:
• Tassajara Road from I-580 EB Ramps Dublin Boulevard in the SB Direction
• Tassajara Road from Dublin Boulevard to Gleason Drive in the NB and SB
Directions
Note that these roadway segments fail the operational standards without traffic from
the proposed project.
Additional detail of the analysis is provided in Appendix 8.6.
Long -Term Cumulative Level of Service at Freeway Segments. Traffic operations were
evaluated at freeway segments under Long-term cumulative traffic conditions and are
shown in Figure 18 of the full traffic analysis (see Appendix 8.6). Freeway volumes for
the Long-term scenario were calculated by taking existing 2010 freeway segment
volumes from Caltrans data and growing the volumes to year 2035. The volume growth
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 65
City of Dublin September 2012
was calculated by taking bi-directional AM and PM traffic volumes from the Dublin
travel forecast model for the base year 2011 and the future year 2035 and determining
the annual growth for each segment. The annual growth for each segment was then
applied to the existing 2010 freeway volumes to get to year 2035.
The Level of Service methodology for the City of Dublin analysis will determine LOS
from the density of each segment. This methodology is different than the Congestion
Management Program analysis which determines the LOS based on volume directly.
This difference in methodology may result in Levels of Service that differ between the
two freeway segment analyses.
According to the analysis results shown in Table 27 of the full traffic analysis, all
freeway segments currently satisfy operational standards, except at the following
locations:
• I-580 from I-680 to Dougherty Road (AM Peak and PM Peak)
• I-580 from Hacienda Drive to Tassajara Road (AM Peak)
• I-580 from Tassajara Road to Fallon Road (AM Peak)
I-680 from Alcosta Boulevard to I-580 (AM Peak and PM Peak)
A supplemental Land Use Analysis under the Congestion Management Program
was conducted to evaluate freeway segments in the Metropolitan Transportation
System using the Alameda CTC model under Long-term traffic conditions.
Freeway volumes for the Long-term scenario were calculated by taking the
incremental difference in the Alameda CTC model volumes from year 2030 and
year 2005 on each freeway segment to determine an annual growth. The annual
growth rate was then applied to the existing Caltrans counts taken in 2010 to
grow to Long-term 2035. The freeway volumes for each segment based on
vehicles per hour per lane (vphpl) were used directly to determine LOS, which
may result in different Levels of Service between the two freeway analyses. In
addition, the City of Dublin freeway analysis used freeway volumes based on the
City of Dublin model, and the Congestion Management Program analysis used
freeway volumes based off the Alameda CTC model.
According to the analysis results shown in Table 28 of the full traffic report, all freeway
segments satisfy operational standards, except at the following locations:
• I-580 from I-680 to Dougherty Road (AM & PM Peaks)
• I-580 from Dougherty Road to Hacienda Drive (AM & PM Peaks)
• I-580 from Hacienda Drive to Tassajara Road (AM & PM Peaks)
• 1-580 from Tassajara Road to Fallon Road (AM & PM Peaks)
• I-580 from Fallon Road to Airway Boulevard (AM & PM Peaks)
Note that these freeway segments fail the operational standards without traffic from the
proposed project. Additional detail of the analysis is provided in the Appendix.
Long -Term Plus Project Level of Service Cumulative Traffic Conditions. Long-term
cumulative traffic conditions (based on the City's model traffic forecasts) plus the
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 66
City of Dublin September 2012
Moller Ranch development were evaluated at the study intersections and volumes are
shown in Figure 19 of the full traffic analysis (see Appendix 8.6). As shown in Table 29
of the full traffic report, all study intersections function within acceptable standards,
except at the following locations:
• Dougherty Road and Dublin Boulevard (Significant Impact)
• Hacienda Drive and Dublin Boulevard (Significant Impact)
• Camino Tassajara Road and Highland Road (Not a Significant Impact)
• Tassajara Road and Dublin Boulevard (Significant Impact)
• Tassajara Road and I-580 WB Ramps (Significant Impact)
• Santa Rita Road and I-580 Eastbound Ramps / Pimlico Drive (Acceptable)
• Fallon Road and Dublin Boulevard (Significant Impact)
The intersection of Santa Rita Road and I-580 Eastbound Ramps/Pimlico Drive is a
gateway intersection. The main movements with high delay are the westbound left turn
movement and the southbound left turn movement. At this intersection, optimizing
traffic signal timing will not mitigate the intersection to operate at LOS D. To increase
the capacity of either of these two movements would require the widening of the
westbound and/or southbound approaches which would likely include right-of-way
acquisition from private properties, non-standard design features, and/or bridge
widening which are not considered reasonable solutions.
Gateway intersections may have a LOS below LOS D if there is no reasonable
mitigation possible or if the necessary mitigation conflicts with other goals and policies
of the City of Pleasanton. Because there does not appear to be a reasonable solution a
level of service below LOS D was considered to be acceptable and a significant impact is
not assumed.
Long -Term + Project Roadway Segment Cumulative Analysis. Traffic operations were
evaluated at roadway segments listed as routes of regional significance under Long-
term Plus Project cumulative traffic conditions and are shown in Figure 20 of the full
traffic analysis (see Appendix 8.6). ADT volumes for the Long-term Plus Project
cumulative scenario were calculated by adding the daily trips generated by the
proposed project to Long-term volumes. ADT volumes for each roadway segment were
compared to the ADT threshold for that particular type of roadway as defined by the
City of Dublin General Plan.
According to the analysis results shown in Table 30 of the full traffic report, all roadway
segments currently satisfy operational standards, except at the following locations:
• Tassajara Road from I-580 to Dublin Boulevard (Significant Impact)
A supplemental Land Use Analysis under the Congestion Management Program was
conducted to evaluate roadway segments in the Metropolitan Transportation System
under Long-term Plus Project traffic conditions and are shown in Table 31 of the full
traffic report. Project volumes were added on top of the Long-term volumes generated
by the Alameda CTC model described in the Long-term without Project section. For this
analysis, arterial average speeds were considered to determine LOS, not volume
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 67
City of Dublin September 2012
thresholds listed in the City of Dublin General Plan. This difference in methodology
may result in Levels of Service that differ between the two roadway segment analyses.
Dublin Boulevard and Tassajara Road were the two arterials analyzed, with both
classified as Arterial Class I based on the free flow speed 35 mph or more for each
corridor.
According to the analysis results, the following roadway segments do not satisfy
operational standards:
• Tassajara Road from I-580 EB Ramps Dublin Boulevard in the SB Direction
• Tassajara Road from Dublin Boulevard to Gleason Drive in the NB and SB
Directions — Significant Impact
Note that these roadway segments fail the operational standards without traffic from
the proposed project. After the project traffic is added, the roadway segment on
Tassajara Road from Dublin Boulevard to Gleason Drive in the NB direction will
degrade further and therefore is considered a significant impact.
Additional detail of the analysis is provided in Appendix 8.6.
Long; -Term + Project Cumulative Level of Service at Freeway Segments. Traffic
operations were evaluated at freeway segments under Long-term Plus Project
cumulative traffic conditions and are shown in Figure 21 of the full traffic analysis.
Freeway volumes for the Long-term Plus Project scenario were calculated by taking the
Long-term volumes and adding the proposed project volumes.
The Level of Service methodology for the City of Dublin analysis will determine LOS
from the density of each segment. This methodology is different than the Congestion
Management Program analysis which determines the LOS based on volume directly.
This difference in methodology may result in Levels of Service that differ between the
two freeway segment analyses.
According to the analysis results shown in Table 32 of the full traffic report, all
freeway segments currently satisfy operational standards, except at the following
locations:
• I-580 from I-680 to Dougherty Road (AM Peak and PM Peak) — Significant
Impact
• I-580 from Hacienda Drive to Tassajara Road (AM Peak) — Significant
Impact
• I-580 from Tassajara Road to Fallon Road (AM Peak)
• I-680 from Alcosta Boulevard to I-580 (AM Peak and PM Peak) —
Significant Impact
A supplemental Land Use Analysis under the Congestion Management Program was
conducted to evaluate freeway segments in the Metropolitan Transportation System
using the Alameda CTC model under Long-term Plus Project traffic conditions.
Freeway volumes for the Long -term Plus Project scenario were calculated by adding
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 68
City of Dublin September 2012
the project volumes to the Long -term condition volumes. The freeway volumes for
each segment based on vehicles per hour per lane (vphpl) were used directly to
determine LOS, which may result in different Levels of Service between the two
freeway analyses. In addition, the City of Dublin freeway analysis used freeway
volumes based on the City of Dublin model, and the Congestion Management Program
analysis used freeway volumes based off the Alameda CTC model.
According to the analysis results shown in Table 33 of the full traffic report, all
freeway segments satisfy operational standards, except at the following
locations:
• I-580 from I-680 to Dougherty Road (AM & PM Peaks) — Significant
Impact
• I-580 from Dougherty Road to Hacienda Drive (AM & PM Peaks) —
Significant Impact
• I-580 from Hacienda Drive to Tassajara Road (AM & PM Peaks) —
Significant Impact
• I-580 from Tassajara Road to Fallon Road (AM & PM Peaks)
• I-580 from Fallon Road to Airway Boulevard (AM & PM Peaks) —
Significant Impact
Note that these freeway segments fail the operational standards without traffic from the
proposed project, except the segment of I-580 Westbound from Hacienda Drive to
Tassajara Road. After the project traffic is added, the roadway segments degrade
further and therefore are considered significant impacts.
The freeway segment on I-580 from Tassajara Road to Fallon Road is not considered a
significant impact because the project does not add any further traffic to the failing
condition.
Additional detail of the analysis is provided in Appendix 8.6.
Supplemental Impacts and Mitigation Measures. The following supplemental traffic and
transportation impacts have been identified with the proposed project. Consistent with
other CEQA documents in the Eastern Dublin area, this SEIR identifies only new or more
severe impacts than were identified in the Eastern Dublin EIR or the 2007 Casamira
Valley SEIR.
Supplemental Intersection Impacts. The following supplemental impacts have been
identified with the proposed project.
Intersection impacts. The following impacts are anticipated with respect to roadway
intersections near the site.
Hacienda Drive/Dublin Boulevard intersection.
Supplemental Impact TRA-1-12 (Project contribution to impact at Hacienda
Dr./Dublin Blvd. intersection under both near -term and long-term cumulative
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 69
City of Dublin September 2012
conditions). The Hacienda Drive and Dublin Boulevard intersection would
operate at LOS E during the AM peak hour under both near -term and long-
term traffic conditions and would operate at LOS F during the PM peak hour.
This intersection and would experience an increase in delay during the AM
and PM peak hours due to the Moller Ranch development (significant
supplemental impact and mitigation required).
This impact would be reduced to a less -than -significant level with adherence to
the following measure that would make improvements at this intersection to
increase vehicle capacity during peak hours.
-1-12 (Project contribution to impact at Hacienda
Dr./Dublin Blvd. intf
conditions). The City shall remove the eastbound crosswalk on the south leg of the
intersection of Hacienda Drive and Dublin Boulevard. The removal of the eastbound
pedestrian crosswalk would allow more time for the westbound left turn movement
and thereby lower the overall delay of the intersection.
Fallon Road/Hacienda Bouleva,d intersection
Supplemental Impact TRA-2-12 (Project contribution to impact at Fallon
Rd./Hacienda Blvd. intersection under near term conditions). The Fallon Road
and Dublin Boulevard intersection would operate at LOS F during the PM
peak hour under the Near -term traffic condition and would experience an
increase in delay during the PM peak hour due to the Moller Ranch
development. (significant supplemental impact and mitigation required).
This impact would be reduced, but not to a less -than -significant level with
adherence to the following measure that would require improvements to existing
traffic signal operations at the identified intersection.
Supplemental Mitigation SM-TRA-2-12 (Project contribution to impact at Hacienda
Dr./Dublin Blvd. intersection under near -term conditions). The project applicant
shall optimize the signal timing splits at the intersection of Fallon Road and Dublin
Boulevard. This improvement will reduce the impact to less than significant in the
Near -term Plus Project condition by improving operations to a pre -project condition.
Although the project would worsen the delay at the already failing intersection, the
improvement does not mitigate the intersection to an acceptable LOS and therefore
the project shall be responsible for the entirety of the mitigation costs.
Dougherty Road/Dublin Boulevard intersection
S
bution to im
Rd./Dublin Blvd. intersection under long term cumulative conditions). The
Dougherty Road and Dublin Boulevard intersection would operate at LOS F
during the AM and PM peak hours under the Long-term traffic condition and
would experience an increase in delay during the AM and PM peak hours due
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 70
City of Dublin September 2012
to the Moller Ranch development (significant supplemental impact but
mitigation infeasible).
Previously approved mitigation measures have been implemented at this intersection.
There is no additional feasible mitigation for this intersection under long-term
conditions. Optimizing the signal timing splits at the intersections would not improve
the intersection to better than without the project. The intersection in the Long-term
scenario is already improved with double and triple left turn movements at each
approach, as well as three or more through lanes and right turn overlaps. There are no
foreseeable capacity improvements to this intersection without widening the roadway.
Acquisition of additional right-of-way would not be feasible to the close proximity of
commercial structures and/or parking adjacent to the intersection. It should be noted
that the project would only increase the average intersection delay by 1.0 second in the
AM peak and 1.3 seconds in the PM peak. The project applicant is required to pay its
proportionate traffic impact fees to contribute towards a possible future improvements
in this location. However, the impact remains significant and unavoidable.
Tassajara Road/Dublin Boulevard intersection
ution to impact at the Tassajara
Rd./Dublin Blvd. intersection under long-term cumulative conditions). The Tassajara
Road and Dublin Boulevard intersection is expected to operate at LOS D during the
AM peak hour and LOS F during the PM peak hour under the Long-term traffic
condition and would experience an increase in LOS and delay during the AM and
PM peak hours due to the Moller Ranch development (significant supplemental
impact and mitigation required).
There is no feasible mitigation for this intersection under the long-term conditions.
Optimizing the signal timing splits would not improve the intersection to a satisfactory
condition than without the project. The intersection in the Long-term scenario would
have double and triple left turn movements at each approach, as well as three or more
through lanes. There are no foreseeable capacity improvements to this intersection
without widening the roadway which would not be feasible due to right-of-way
constraints. The project applicant will be required pay its proportionate traffic impact
fees to help contribute towards possible future improvement intersection improvements
However, the impact remains significant and unavoidable.
Tassajara Road/I-580 Westbound Ramps
Supplemental Impact TRA-5-12 (Project contribution to impact at Tassajara
Rd /1-580 WB ramps under long-term cumulative conditions). The Tassajara
Road and I-580 WB Ramps intersection would operate at LOS D during the
PM peak hour under the long-term traffic condition and would experience an
increase in level of service to LOS E during the PM peak hour due to the
Moller Ranch development (significant supplemental impact and mitigation
required).
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 71
City of Dublin September 2012
This impact would be reduced to a less -than -significant level with adherence to
the following measure that would require improvements to existing traffic signal
operations at the identified intersection.
Supplemental Mitigation SM-TRA-5-12 (Project contribution to impact at Tassajara
Rd./I-580 WB ramps under long-term cumulative conditions). Prior to the recordation
of the first final map for the Moller project, the applicant shall pay the cost to retime
the signal at the intersection of Tassajara Road and I-580 WB Ramps. This
improvement will reduce the impact to less than significant in the Long-term +
Project condition.
Fallon Road/Dublin Boulevard intersection
Supplemental Impact TRA-6-12 (Project contribution to impact at Fallon
Rd./Dublin Blvd. under long-term cumulative conditions). The Fallon Road
and Dublin Boulevard intersection would operate at LOS F during the PM
peak hour under the Long-term traffic condition and would experience an
increase in delay during the PM peak hour due to the Moller Ranch
development (significant supplemental impact and mitigation required).
This impact would be reduced to a less -than -significant level with adherence to
the following measure that would require improvements to existing traffic signal
operations at the identified intersection. However the supplemental mitigation
measure would only return the operation of the Fallon Road/Dublin Boulevard
intersection to a pre -project operational level. Overall, this intersection would
still operate at an unsatisfactory level.
TRA-6-12 (Project contribution to i
Rd./Dublin Blvd. under long-term cumulative conditions). Prior to the City's
issuance of the first certificate of occupancy, the applicant shall optimize the signal
timing splits at the intersection of Fallon Road and Dublin Boulevard.
Roadway segment impacts
Tassajara Road from Fallon Road to County Line
Supplemental Impact TRA-7-12 (Project contribution to impact along Tassajara
Rd. between Fallon Rd. and County line under near -term conditions). The
roadway segment along Tassajara Road from Fallon Road to the County limit
will exceed the recommended ADT volume threshold for a two-lane roadway
in the City of Dublin due to the Moller Ranch development (significant
supplemental impact and mitigation required).
This impact would be reduced to a less -than -significant level with adherence to
the following measure that would require widening and other improvements to
Tassajara Road as described above.
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 72
City of Dublin September 2012
Supplemental Mitigation SM-TRA-7-12 Project contribution to impact along_
Tassajara Rd. between Fallon Rd. and County line under near -term conditions). Prior
to the City's issuance of the first Certificate of Occupancy for the Moller project, the
applicant shall widen Tassajara Road from the project entrance to Fallon Road to
four lanes.
Tassajara Road from Dublin Boulevard to Gleason Drive
Supplemental Impact TRA-8-12 (Project contribution to impact to impact along_
Tassajara Rd. between Dublin Blvd. and Gleason Dr. under long-term cumulative
conditions). The roadway segment along Tassajara Road from Dublin Boulevard to
Gleason Drive under the Metropolitan Transportation System is expected to operate
at LOS F during the PM peak hour and under the Long-term condition and would
experience a decrease in average travel speed during the PM peak hour due to the
Moller Ranch development (significant supplemental impact and mitigation required).
This impact would be reduced to a less -than -significant level with adherence to
the following measure that would require coordination of existing traffic signals
along this portion of Tassajara Road to improve the roadway capacity.
Supplemental Mitigation SM-TRA-8-12 (Project contribution to impact along-
Tassajara Rd. between Fallon Rd. and County line under near -term conditions). Prior
to the recordation of the first final subdivision map for the Moller project, the
applicant shall pay the cost to coordinate signals along Tassajara Road from Dublin
Boulevard to Gleason Drive. The coordination of signals along Tassajara would
increase the average travel speed to 11 mph, the same as without the project, and
therefore will reduce the impact to less than significant in the Long-term plus Project
condition.
Tassajara Road from 1-580 to Dublin Boulevard
Supplemental Impact TRA-9-12 (Project contribution to impact along Tassajara Rd.
between I-580 and Dublin Blvd. under long-term conditions). The roadway segment
along Tassajara Road from I-580 to Dublin Boulevard would exceed the
recommended ADT volume threshold for an eight -lane roadway in the City of
Dublin under the Long-term traffic condition and is expected to experience an
increase in volume due to the Moller Ranch development. (significant supplemental
impact and mitigation required).
This impact would be reduced to a less -than -significant level with adherence to
the following measure that would require widening of Tassajara Road by an
additional travel lane in this location to improve the roadway capacity.
Supplemental Mitigation SM-TRA-9-12 (Project contribution to impact along Tassajara
Rd. between I-580 and Dublin Blvd. under long-term conditions). Northbound
Tassajara Road shall be widened to five lanes from I-580 to Dublin Boulevard. The
additional northbound lane would be a drop lane for the inside northbound right turn
lane. An additional northbound lane would increase the ADT threshold to 80,000
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 73
City of Dublin September 2012
vehicles per day and therefore will reduce the impact to less than significant in the
Long-term + Project condition. The City intends to include this roadway improvement
in the next fee program update and therefore the project will solely be responsible to
pay their impact fees. If the improvement is not added to the fee program by the time
of final subdivision mapping, the project shall pay its fair share of the improvement as
calculated by the City. The project's traffic volume contribution to the impact is 2%
under Long-term conditions.
Roadwayqueuing impacts
Tassajara RoadlFallon Road intersection
Supplemental Impact TRA-10-12 (Lack of vehicle storage capacity at the Tassajara
Rd./ Fallon Rd. intersection). The Tassajara Road and Fallon Road intersection would
provide for an inadequate eastbound left turn queue of during the PM peak hour in
the Existing Plus Project and Near Term Plus Project conditions. The project would
create a left -turn queue exceeding the turn pocket and then spilling out of the turn
pocket into the roadway, this is a significant impact (significant supplemental impact
and mitigation required).
This impact would be reduced to a less -than -significant level with adherence to
the following measure that would require the construction of a second turn lane
at the Tassajara Road/Fallon Road intersection to accommodate additional
vehicles during the peak hour.
Supplemental Mitigation SM-TRA-10-12 (Lack of vehicle storage capacity at the
Tassajara Rd./ Fallon Rd. intersection). Prior to the City's issuance of the Certificate of
Occupancy, the applicant shall restripe the existing eastbound through lane into a
shared through/left turn lane and implement split phasing for the eastbound and
westbound approaches at the intersection of Tassajara Road and Fallon Road.
Tassajara RoadlDublin Boulevard intersection
Supplemental Impact TRA-11-12 (Lack of vehicle storage capacity at the Tassajara
Rd./ Dublin Blvd. intersection). The Tassajara Road and Dublin Boulevard
intersection would have provide for an inadequate eastbound left turn queue under
the Long-term Plus Project conditions. The project would create a demand for an
additional approximately 80 feet of the total queue that would exceed the turn pocket
length in the PM peak. Since the project would create at least one car length of the
total queue exceeding the turn pocket and the queue spilling out of the turn pocket is
greater than one car, this impact would be significant (significant supplemental
impact and mitigation required).
There is no feasible mitigation for this intersection in the Long-term. Optimizing the
signal timing splits at this intersection would not improve the intersection to better than
without the project. The intersection in the Long-term scenario currently has double
lefts for the eastbound left -turn movement. In addition, the intersection has double and
triple left turn movements at each of the other approaches, as well as three or more
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 74
City of Dublin September 2012
through lanes. The existing eastbound left turn pocket cannot be lengthened because it
has dual left turn lanes back to back with the left turn pockets for the westbound
movement at the intersection of Dublin Boulevard and Glynnis Rose Drive. There are
no foreseeable capacity improvements to this intersection without widening the
roadway which would be infeasible due to lack of sufficient right-of-way. The project
applicant is required to pay its proportionate traffic impact fees to help contribute
towards a possible future improvement. However, the impact remains significant and
unavoidable.
Freeway impacts. The Kimley-Horn traffic report (Appendix 8.6) identifies impacts of
the Moller Ranch project to the I-580 and I-680 freeways. As noted in the Previous
CEQA document section, these impacts have already been noted in the Eastern Dublin
EIR and the Casamira Valley Supplemental EIR. No new or more significant impacts
would occur than have been previously analyzed.
Moller Creek culvert replacement project. The proposed replacement of the existing
culvert over Moller Creek would be constructed in conjunction with the planned
widening of Tassajara Road near the Moller Ranch site. The culvert replacement would
not generate any vehicular traffic and would have no impact on traffic circulation.
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 75
City of Dublin September 2012
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4.2 BIOLOGICAL RESOURCES
INTRODUCTION
This section provides information on the biological resources within the boundaries and
in the vicinity of the Moller Ranch property (hereinafter the "project"), including the
proposed culvert replacement over Tassajara Creek south and west of the Moller Ranch
site. Biological resources were analyzed in Chapter 3.7 of the 1993 Eastern Dublin EIR, a
program EIR for the Eastern Dublin General Plan Amendment and Specific Plan area
and within the 2007 Casamira Valley Supplemental EIR. The purpose of this section is to
supplement previous EIRs with respect to the proposed project and to update
information regarding special -status plant and wildlife species, sensitive habitats,
wetland impacts and any regulatory changes that may have occurred since certification
of the 2007 Supplemental EIR.
The following biological resources analysis is based on two recent biological resource
reports. H.T. Harvey & Associates analyzed any changes to biological conditions on the
Moller Ranch. WRA Associates prepared a biological resources report to assess impacts
to the proposed Moller Creek culvert replacement. Both reports are attached to this
DSEIR (Appendices 8.7 and 8.8). This section updates species information and regulatory
circumstances and provides an analysis of impacts and mitigation measures specific to
project features.
MOLLER RANCH ENVIRONMENTAL SETTING
Site characteristics. The terrain of the Moller Ranch property ranges in elevation
between approximately 450 and 1,000 feet above sea level. Moller Creek, a tributary of
Tassajara Creek to the west, flows through the western portion of the study area in a
generally east -west direction (see Exhibit 4.2.1). The easterly portion of the project site
consists largely of moderate to steep rolling hillsides in a small but well-defined valley
with drainage courses on the valley floor. Two ranch houses and a number of
agricultural outbuildings are in the western portion of the Moller Ranch, situated
immediately north of Moller Creek. The majority of the project site is non-native
grassland that is grazed by cattle. A number of seasonal drainages flow in various
directions through the study area; however, some reaches of Moller Creek are the only
drainages in the study area that typically contain surface water throughout the summer
and fall and support riparian woodland and herbaceous riparian wetlands. Other
vegetation communities and habitats present on the site include: seasonal wetlands
(including alkali wetlands), a stock pond, unvegetated drainages, and Eucalyptus trees.
These vegetation communities and habitats are described in more detail in the following
sections.
A portion of the project area for the PG&E Tri-Valley 2002 Capacity Increase Project is
located on the Moller Ranch site. This PG&E project includes the construction of an
access road along the existing Moller Road, which traverses the site. An EIR was
prepared for the project and the project is currently being constructed. Biological impacts
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 84
City of Dublin September 2012
associated with the access road included permanent fill of jurisdictional wetlands along
Moller Road.
Vegetation communities and habitats. The following discussion of vegetation
communities and habitats is based on information contained in the Casamira Valley
SEIR as updated by H.T. Harvey & Associates in July 2012. The July 2012 report is
included in this SEIR as Appendix 8.7.
The vegetation communities and habitats present on the project site are described below
and are mapped in Exhibit 4.2.1. Wildlife that is typically associated with these
vegetation communities and habitats are also discussed below. Terminology of the
vegetation types are based on the July 2012 H.T. Harvey report.
Non-native Annual Grassland. Non-native grassland is the dominant vegetation
community in and adjacent to the project site. This community is dominated by non-
native grasses and forbs. Grasses characteristic of this community are soft chess (Bromus
hordeaceus), wild oats (Avena fatua), slender wild oats (A. barbata), ripgut brome (Bromus
diandrus), hare barley (Hordeum murinum ssp. leporinum), and Italian ryegrass (Lolium
multiflorum). Creeping wild -rye (Leymus triticoides), a native perennial grass, also occurs
in patches throughout the grasslands in the Project area. Non-native forbs include
bellardia (Bellardia trixago), black mustard (Brassica nigra), filaree (Erodium botrys), and
red -stemmed filaree (Erodium cicutarinm). Areas of particular concern within this
vegetation communityare areas dominated by invasive, non-native thistles. Yellow
starthistle (Centaurea solstitialis), Italian thistle (Carduus pycnocephalus), milk thistle
(Silybum marianum), and bull thistle (Cirsium vulgare) are present in grasslands
throughout the project site and near disturbed areas such as Moller Road. Seeds of
thistles are easily spread by the wind due to the parachute attached to each fruit
containing the seed. Native forbs present in the grassland include harvest brodiaea
(Brodiaea elegans), California poppy (Eschscholzia californica), owl's clover (Castilleja
densiflora), purple owl's -clover (Castilleja exserta ssp. exserta), minature lupine (Lupinus
bicolor), and blow -wives (Achyraechaena mollis).
Wildlife species commonly found in grassland habitats that were observed on the Moller
Ranch site include western fence lizard (Sceloporus occidentalis), red-tailed hawk (Buteo
jamaicensis), golden eagle (Aquila chrysaetos), northern harrier (Cicus cyaneus), turkey
vulture (Cathartes aura), American kestrel (Falco sparverius), barn swallow (Hirundo
ri.istica), and western meadowlark (Sturnella neglecta). California ground squirrel
(Spermophilus beecheyi), Botta's pocket gopher (Thomomys bottae), and California vole
(Microtus californicus) burrows were also observed in the grasslands. The grassland
habitat within the project site also provides suitable habitat for large and medium-sized
mammals such as striped skunk (Mephitis mephitis), American badger (Taxidea taxus),
coyote (Canis latrans), and black -tailed deer (Odocoileus hemionus columbianus). Although
not observed during any of the surveys of the Project area, burrowing owl, California
horned lark (Eremophila alpestris actia), and San Joaquin kit fox (Vulpes maerotis mutica)
occur in open non-native grassland habitat in the region and the site contains habitat for
these species. Suitable breeding sites for California tiger salamanders (Ambystoma
californiense) are present on and near the Moller Ranch site and grasslands around these
breeding sites provide important terrestrial habitat for this species. California tiger
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 85
City of Dublin September 2012
salamanders were observed in California ground squirrel burrows during nocturnal
surveys conducted on the Project area in the winter of 2002/2003.
Ephemeral and Intermittent Drainages. Wetlands are areas that are inundated or
saturated by surface or ground water at a frequency and duration of sufficient length to
support vegetation adapted to anaerobic (oxygen -depleted) soil conditions. Seasonal
wetlands typically occur in natural depressions and swales that are inundated or
saturated in the upper 12 inches of the soil for a portion of the year (seasonally).
Several types of jurisdictional seasonal wetlands have been identified on the Moller
Ranch during the wetland delineation: seep wetlands, seasonal wetlands, and ephemeral
wetland swales (WRA 2003b). In this EIR, for the purpose of mapping vegetation
communities these three jurisdictional seasonal wetlands types are mapped as "seasonal
wetlands (jurisdictional)" (Exhibit 4.2.1). However, these three types of seasonal
wetlands are analyzed separately in the impact analysis. Some seasonal wetlands in the
project site were determined by the Corps to be isolated and thus non -jurisdictional.
WRA also identified jurisdictional wetlands adjacent to the Moller Creek channel as
"herbaceous riparian wetlands" and these wetlands are discussed in this EIR below as
"herbaceous riparian wetlands." Both jurisdictional and non -jurisdictional seasonal
wetlands on the project site are considered a sensitive habitat under CEQA and are
potentially subject to regulation by the RWQCB as waters of the State.
There are verified jurisdictional seep wetlands (3.28 acres), seasonal wetlands (2.22
acres), and ephemeral wetland swales (0.75 acre) on the project site and verified non -
jurisdictional seep wetlands (0.48 acre), seasonal wetlands (0.06 acre), and ephemeral
wetland swales (0.07 acre) in the eastern portion of the Moller property. Seep wetlands,
as described by WRA, are located throughout the Project area and generally occur at the
base of hillsides in shallow depressions within non-native grassland. These seep
wetlands are dominated by perennial, emergent hydrophytic plants such as yerba manza
(Anemopsis calfornica), iris -leaf rush (Juncus xiphioides), and Mexican rush (Juncus
mexicanus). Other species present in seeps include common tarweed (Hemizonia pungens),
Mediterranean barley (Hordeum marinum ssp. gussoneanum), saltgrass (Distichlis spicata),
rabbitfoot grass (Polypogon monspeliensis), Italian ryegrass, and narrow -leaf milkweed
(Asclepius fascicularis). Many of these seeps have alkaline soils, and in several areas of the
Project area the seeps support Congdon's tarplant and San Joaquin spearscale, which are
special -status plants. The seasonal wetlands type identified by WRA (2003b) generally
occurs at lower elevations on the project site in depressions and generally lack perennial,
emergent vegetation. Dominant plant species include common tarweed, Italian ryegrass,
Mediterranean barley, saltgrass and rabbitfoot grass. Some of these seasonal wetlands
also have alkaline soils and support Congdon's tarplant. Ephemeral wetlands swales in
the Project area are drainages that are located in valleys and are hydrologically
connected to other wetlands or waters. Dominant plant species in ephemeral wetland
swales are typically annual, herbaceous hydrophytes and some upland species, such as
Italian ryegrass, Mediterranean barley, rabbitfoot grass, curly dock (Rumex crispus),
sheep sorrel (Rumex acetosella), and suckling clover (Trifolium dubium). An ephemeral
swale in the southern portion of the Project area that drains into Moller Creek supports
Congdon's tarplant.
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 86
City of Dublin September 2012
Wildlife species known from the region that are often associated with seasonal wetlands
include the Pacific treefrog (Pseudacris regilla) and western toad (Bufo boreas). California
red -legged frogs may also use these areas as hydration habitat. Some of the grassland
species mentioned in the Non-native Grassland section may also rely on seasonal
wetlands as a source of water and food. The seasonal wetlands also may be used as a
water source, on a seasonal basis, for waterfowl and shorebirds.
Seep and Seasonal Wetland. All of the herbaceous riparian wetlands (1.93 acres) occur in
the Moller Creek channel and along its banks and are verified jurisdictional wetlands
(Exhibit 4.2.1). Dominant hydrophytic species include narrow -leaf cattail (Typha
angustifolia), yerba manza, Mexican rush and saltgrass. Other species observed in this
wetland type include California bulrush (Scirpus californicus), alkali bulrush (Scirpus
maritimus), Italian ryegrass, fat hen (Atriplex triangularis), saltgrass, bird's foot trefoil
(Lotus corn iculati.ts), and rabbitfoot grass. Presumably, at least some of these herbaceous
riparian wetlands on the project site have a longer hydroperiod than other seasonal
wetlands on the project site because some of these herbaceous riparian wetlands support
narrow -leaf cattail and California bulrush, which do not occur in other on -site seasonal
wetlands.
Perennial Drainage. There are two types of verified jurisdictional unvegetated (non -
wetland) waters of the U.S. on the Moller Ranch property (0.92 acre): unvegetated
drainages, including some reaches of the Moller Creek channel, and the southeast stock
pond (Exhibit 4.2.1).
Moller Creek is an intermittent to perennial tributary to Tassajara Creek that flows
southwest through the Moller Ranch. Vegetated reaches of the creek support herbaceous
riparian vegetation that were described in the preceding section, and unvegetated
reaches of the creek channel are considered jurisdictional non -wetland waters of the U.S.
Moller Creek provides habitat for California red -legged frog, Pacific treefrog, Pacific
pond turtle, and several fish species. During the spring and summer months the flow in
the creek decreases but several plunge pools persist providing habitat well into summer
for California red -legged frogs. Red -legged frogs were observed in these plunge pools
during LSA's previous reconnaissance surveys of the site. California tiger salamanders
also have been observed in burrows near Moller Creek and could use these pools as
breeding sites.
Other jurisdictional unvegetated waters of the U.S. on the project site include an
intermittent tributary of Cottonwood Creek in the eastern portion of the Moller property
and tributaries to Moller Creek. The width of tributaries on the site range from
approximately 1 foot wide to 30 feet wide, and depth ranges from approximately 1 to 2
feet deep (to the high water line). The substrate is primarily unvegetated and consists of
mud, gravel and cobble. The hydrology of the Cottonwood Creek tributary has been
altered by construction of the stock pond in that area, causing the portions of the lower
reach below the pond to dry up. This tributary consists of jurisdictional unvegetated
waters (drainages with a defined bed and bank), seep wetlands, ephemeral wetland
swales and areas exhibiting overland surface flows that are not confined to a defined bed
and bank.
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 87
City of Dublin September 2012
A stock pond (Southeast Stock Pond) occurs on the Moller Ranch along the tributary of
Cottonwood Creek (Exhibit 4.2.1). The pond was still inundated on August 24, 2005,
during the reconnaissance survey conducted by LSA biologists. It potentially remains
filled throughout the entire year. At the time of the reconnaissance survey, the edges of
the pond were primarily devoid of vegetation except for a few patches of spikerush
(Eleocharis macrostachya), rabbitfoot grass and a few small cattails (Typha sp.). An
unidentifiable grass -like aquatic plant was also observed growing in most of the
indundated areas of the pond.
Wildlife species known from the region that are typically associated with stock ponds
include the federally listed California red -legged frog and California tiger salamander.
Pacific pond turtle, a California species of special concern, also is commonly found in the
ponds in the region. California tiger salamander larvae were observed during surveys by
WRA in the southeast stock pond and in an off -site stock pond north of the project site.
The stock ponds also provide suitable breeding habitat for other amphibians such as the
Pacific treefrog and western toad, both of which were observed at stock ponds during
aquatic surveys conducted by WRA in 2003. Some of the grassland species mentioned in
the Non-native Grassland section also rely on these stock ponds as a source of water and
food. The stock ponds also may be used as a water source, foraging area, and loafing
area for waterfowl and shorebirds.
Riparian Woodland. There are approximately 2.90 acres of riparian woodland near the
southwestern boundary of the site along Moller Creek. This woodland supports a fairly
dense canopy of trees with a canopy cover of approximately 35 to 40 percent. It is
dominated by valley oak (Quercus lobata) and red willow (Salix laevigata). Other
associated trees species include California bay (Umbellularia californica), blue gum
(Eucalyptus globulus), northern California black walnut (Juglans californica var. hindsii),
and non-native fruit trees (Prunus sp.). The understory consists of non-native grasslands
along the banks of the creek and herbeaceous riparian wetlands on some of the lower
banks. Poison oak (Toxicodendron diversilobum) and coyote brush (Baccharis pilularis) also
occur in the understory.
Riparian woodland trees provide roosting, foraging, and nesting habitat for many birds.
An old stick nest was observed by LSA in one of these trees during the reconnaissance
survey in August 2005. Additionally, an active barn owl (Tyto alba) nest was observed
within the riparian woodland in a burrow along an incised bank of the creek channel.
Species that were observed utilizing the trees during site visits include red-tailed hawk
(Buteo jamaicensis), loggerhead shrike (Lanius ludovicianus), western scrub -jay (Aphelocoma
californica), Nuttall's woodpecker (Picoides nuttallii), mourning dove (Zenaida macroura),
and house finch (Carpodacus mexicanus). White-tailed kite, Bullock's oriole (Icterus
bullockii), and western kingbird (Tyrannus verticalis) occur in the area and may also use
the trees on the project site.
Developed. Two ranch houses and other associated buildings are present in the on the
Moller Ranch (1.16 acres). These buildings could provide nesting habitat for swallows
and other birds. Bats could also roost in the buildings. This developed area also supports
ornamental trees and shrubs.
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 88
City of Dublin September 2012
Eucalyptus Trees. There are several stands of eucalyptus trees (Eucalyptus spp.), that are
primarily blue gum (E. globulus), in the Project area near the ranch houses and Moller
Creek. There are a total of approximately 2.24 acres of eucalyptus stands on the project
site.
During the reconnaissance site visit in August of 2005, a red-tailed hawk was observed
near a large stick nest in a tall eucalyptus northeast of the ranch buildings. Other species
that were observed utilizing the eucalyptus trees during site visits include mourning
dove, California towhee (Pipilo crissalis), northern mockingbird (Mimus polyglottos), red -
winged blackbird (Agelaius phoeniceus), Brewer's blackbird (Euphagus cyanocephalus), and
European starling (Sturnus vulgaris).
The HT Harvey 2012 report identified a number of special -status plants that were not
analyzed in the 2007 Casamira Valley SEIR. These plants include: Slender silver moss,
Lesser saltscale, Hospital Canyon larkspur, Brandegee's eriastrum, Ben Lomond
buckwheat, Woolly rose -mallow, Legenere, Mt. Hamilton coreopsis, Woodland
woolythreads, Lime Ridge navarretia, Shining navarretia, Prostrate vernal pool
navarretia, Antioch Dunes evening -primrose, Antioch Dunes evening -primrose and
Slender -leaved pondweed. Based on Table 2 contained in the 2012 Harvey report, none
of these plants have been observed on the Moller site and, in some instances, the Moller
Ranch property does not provide suitable habitat for some of the plants.
Sensitive plant communities and habitats. The CDFG monitors the status of uncommon
and declining plant communities and habitats in California. Such communities found in
the general region of the project site are Valley Oak Forest and Woodland, Red Willow
Riparian Forests and Valley Needlegrass Grassland. Wetlands and waters of the State are
also considered sensitive habitats and impacts to these habitats generally require
mitigation under CEQA. Sensitive communities/habitats, except for most wetlands,
have no formal legal protection but are considered "rare and worthy of protection' by
the CNDDB and may require mitigation for impacts under CEQA.
Sensitive plant communities and habitats present on the project site are herbaceous
riparian wetlands, seasonal wetlands, unvegetated waters of the U.S., and riparian
woodland. The riparian woodland on the project site is dominated by both valley oak
and red willow, but valley oak is probably more abundant and therefore it could be
classified as a valley oak woodland, which is a sensitive woodland and any impacts to it
could require mitigation. Valley oak trees must also be considered under the City's
Heritage Tree Ordinance and removal of these trees require a permit.
Wetlands and other waters. WRA conducted a formal wetland delineation on the Moller
Ranch in 2002 and 2003. This delineation was subsequently verified by the US. Army
Corps of Engineers ("Corps") (File Number 27546S). The Corps verified a total of 9.10
acres of jurisdictional waters of the United States in the Project area. WRA identified the
following jurisdictional waters of the United States on the project site: seep wetlands
(3.28 acres), seasonal wetlands (2.22 acres), ephemeral wetland swales (0.75 acre),
herbaceous riparian wetlands (1.93 acres), and non -wetland waters (0.92 acre). In
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 89
City of Dublin September 2012
addition, 0.61 acre of isolated non -jurisdictional seeps, seasonal wetlands and ephemeral
swales are present.
The current configuration of the Moller Ranch development proposal has a changed
development footprint than was analyzed in the 2007 Casamira Valley SEIR. Based on a
site analysis by HT Harvey (see Appendix 8.7), the current development configuration
would impact an estimated 4.45 acres of wetlands and other waters of the United States.
The 2007 SEIR identified that 4.59 acres of wetlands and other waters would be
impacted. The current configuration would affect approximately 0.14 acre less than
identified in the 2007 SEIR.
Special -Status species. For the purposes of this SEIR, special -status species are defined
as follows:
• Plants and animals that are listed or proposed for listing as threatened or
endangered or rare (for plants) under the California Endangered Species Act
(Fish and Game Code 1992 Sections 2050 et seq.; 14 CCR Sections 670.1 et seq.)
and / or the Federal Endangered Species Act (50 CFR 17.12 for plants; 50 CFR
17.11 for animals; various notices in the Federal Register [FR] for proposed
species) and the Migratory Bird Act;
• Plants and animals that are Candidates for possible future listing as threatened
or endangered under the Federal Endangered Species Act (50 CFR 17.12 for
plants; 61 FR 7591, February 28, 1996 for animals);
• Plants and animals that meet the definition of rare or endangered under
CEQA and CEQA Guidelines (14 CCR Section 15380) but are not included on
State or Federal Endangered Species lists;
• Plants occurring on List 1A, List 1B, and List 2 of the CNPS (2005) Inventory of
Rare and Endangered Plants of California. The CDFG recognizes that Lists 1A, 1B,
and 2 of the CNPS inventory contain plants that, in the majority of cases,
would qualify for State listing, and CDFG requests their inclusion in EIRs, as
necessary;
• Animals that are designated as "Species of Special Concern" by CDFG; and,
• Animals that are "fully protected" in California (Fish and Game Code,
Sections 3511, 4700, 5050 and 5515).
Special -Status Plants. WRA conducted focused, protocol -level special -status plant
surveys in the project area on March 10 and 13, April 23, May 21, and August 22, 2003.
WRA compiled a list of 46 special -status plants that occur in the vicinity of the Project
area from an official 2003 USFWS species list for Tassajara and Livermore USGS
quadrangles, and California Natural Diversity Data Base and California Native Plant
Society database searches of these two quadrangles plus the surrounding 10
quadrangles. Based on reconnaissance data, WRA reported that 36 of these 46 species
were potentially present in the project area based on the presence of suitable habitat and
were the target of the focused surveys. After completion of the surveys, 13 species were
determined to be "not present" because suitable habitat is not present in the Project area
and/or the project area is above or below the typical elevation for the species. The 33
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 90
City of Dublin September 2012
remaining species were determined to be either present, or to have a low or moderate
potential to occur in the project area and on the project site. Potentially occurring special -
status plants in and near the Moller Ranch site are shown on Table 4.2-1.
For the 2007 analysis analysis, the CLAPS and CNDDB databases of special -status plants
was reviewed by LSA to determine if any new special -status plant species or occurrences
have been reported since the WRA 2003 surveys.
Some special -status plants species that were not included in the WRA (2003d) table of
potentially occurring species were identified in this database search, but there is no
suitable habitat present in the project area for these species. Based on a review of the
forty-six species in WRA report, the CNPS and CNDDB database and the Eastern Dublin
General Plan Amendment and Specific Plan Final Environmental Impact Report a list of
twenty-six special -status plants that have a potential to occur in the project area was
compiled in Table 4.6-1. All of these species in Table 4.6-1 were included in the WRA
(2003d) list except for Santa Cruz tarplant (Holocarpha macradenia). The table summarizes
each species' protective status, habitat requirements, blooming period, and the closest
known CNDDB occurrences to the project area, and the potential to occur in the project
area. The twenty-six species in Table 4.6-1 are species that remained after eliminating
species that are unlikely to be present in the project area because there is no suitable
habitat present in the project area or the project area is above or below the typical
elevation for the species. Some eliminated species occurred in chaparral, lower montane
coniferous forest, coastal bluff scrub, coastal scrub, serpentine soils, volcanic soils, sandy
soils, talus, rock outcrops or other habitats and microhabitats that are not present in the
project area. The following special -status plants were those considered but not included
in Table 4.6-1: Sharsmith's onion (Allium sharsmithii); Mt. Diablo manzanita
(Arctostaphylos auriculata), Contra Costa manzanita (Arctostaphylos manzanita ssp.
laevigata), alkali milk -vetch (Astragalas terser var, terser), big -scale balsamroot (Balsamorhiza
macrolepis var. marcolepis), Butte County morning glory (Calystegia atriplicifolia ssp.
butensis), chaparral harebell (Campanula exigua), Mt. Diablo bird's -beak (Cordylanthus
nidularis), Hoover's cryptantha (Cryptantha hooveri), Hospital Canyon larkspur
(Delphinium californicum ssp. interius), Brandegee's eriastrum (Eriastrum brandegeeae), Mt.
Diablo buckwheat (Eriogonum trncatum), fragrant fritillary (Fritillaria liliacea), Brewer's
western flax (Hesperolinon breweri), Delta tule pea (Lathyrus jepsonii var, jepsonii), legenere
(Legenere limosa), Hall's bush mallow (Malacothamnus hallii), San Antonio Hills
monardella (Monardella antonina ssp. antonina), robust monardella (Monardella villosa ssp.
globosa), Mt. Diablo phacelia (Phacelia phacelioides), Choris's popcorn flower (Plagiobothrys
chorisianus var. chorisianus), rock sanicle (Sanicula saxatilis), rayless ragwort (Senecio
aphanactis), most beautiful jewel -flower (Streptanthus albidus ssp. peramoenus), Mt. Diablo
jewel -flower (S. hispidus), and Triquetrella californica (a moss).
Special -status plant species are present on site. Two CNPS List 1B species were found in
the project area during the 2003 focused surveys: Congdon's tarplant and San Joaquin
spearscale. These species are discussed below.
Congdon's Tarplant (Centromadia parryi ssp. congdonii). Approximately 1,100 plants
(2.62 ac) were found in the broader study area during the 2003 rare plant surveys
in seasonal wetlands and uplands adjacent to Moller Creek and in the western
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 91
City of Dublin September 2012
portion of the Project area. As an annual species, the numbers of individuals
fluctuate from year to year. Therefore, it is anticipated that populations of
Congdon's tarplant continue to persist in numbers that are approximately the
same as what was observed in the 2007 SEIR.
San Toaquin Spearscale (Atriplex Toaquiniana). Approximately 305 plants (0.36 ac)
were found in the broader study area (174.08 ac) during the 2003 rare plant
surveys in sparsely vegetated alkali wetlands. We anticipate that the populations
of San Joaquin spearscale persist in numbers that are approximately the same as
what was observed in 2003. Based on the 2012 Project footprint, it is anticipated
that San Joaquin spearscale would be avoided by Project activities.
Based on the HT Harvey 2012 analysis (Appendix 8.7), no new or more significant
impacts to special -status plant species would occur than was analyzed in the 2007 SEIR.
Special -Status wildlife. A list of 26 special -status wildlife species was compiled based on
a CNDDB record search, WRA reports (2002, 2003a, 2003c, 2003e, 2003f), and LSA
biologists' knowledge of the wildlife species in the region. Table 4.2-2 summarizes each
species' protective status, general habitat requirements, and potential for occurrence. Of
the 26 special -status animal species listed in Table 4.2-2, eleven species: California red -
legged frog, California tiger salamander, Pacific pond turtle, white-tailed kite, northern
harrier, golden eagle, burrowing owl, California horned lark, loggerhead shrike,
American badger, and San Joaquin kit fox, are of particular concern because they have
been observed in the project area or are known from the immediate vicinity and
potentially would be impacted by the proposed project. These eleven species are
discussed briefly below. Special -status wildlife species are shown on Exhibit 4.2.3.
California Tiger Salamander. The California tiger salamander is a federally listed
threatened species and is also a California species of special concern. The Project area
lies approximately 8,000 feet west of designated critical habitat (Central Valley
Region Unit 18) for California tiger salamander.
This species occurs throughout eastern Alameda County with numerous occurrences
in the vicinity of the project area. California tiger salamanders breed primarily in
temporary water bodies such as playa pools, but will also breed in stock ponds,
ditches, and other water bodies if they lack fish. California tiger salamanders spend
the majority of their lives underground in the burrows of rodents such as the
California ground squirrel and Botta's pocket gopher or similar underground
retreats. Both aquatic and terrestrial habitats are therefore essential to the persistence
of California tiger salamander populations.
WRA observed California tiger salamanders in the southeast stock pond, along
Moller Creek, and in one of the stock ponds north of the site (Exhibit 4.2.2) (WRA
2003a). The southeast stock pond is a breeding site for California tiger salamanders
supporting California tiger salamander larvae during the winter and spring that
eventually transform into juvenile salamanders and move from the pond into the
uplands surrounding the stock pond. WRA found four larvae in the southeast stock
pond during a survey for larvae in April 2003 and one adult in a burrow
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City of Dublin September 2012
approximately 650 feet south of the stock pond during a nocturnal survey in
December 2002. Five adult tiger salamanders were observed in burrows
approximately 20 to 300 feet from the top of the bank of Moller Creek during
nocturnal surveys in December 2002 and January 2003. Four of these adults were
found within the project area, while the other was found approximately 320 feet
north of the project site (Exhibit 4.6.3). Moller Creek is an intermittent ephemeral
creek that forms small pools in the channel and adjacent to the channel during the
spring and summer. WRA did not conduct surveys for larvae in Moller Creek
because red -legged frogs were present, but WRA considers Moller Creek to contain
suitable breeding habitat for tiger salamanders (WRA 2003a). Two smaller stock
ponds are located off -site, approximately 2,100 and 2,220 feet north of the site
(Exhibit 4.3.3). WRA observed one tiger salamander larva in the northern -most stock
pond, which is 2,200 feet north of the site, during a survey for larvae in May 2003.
These ponds may be situated within dispersal distance of the project site.
Additionally, Opus Environmental observed an adult tiger salamander in July 2005
north of the project area in a crack in the soil near the edge of Moller Road (Aspen
2005).
The project area includes one confirmed breeding site in an off -site southeast pond,
potential breeding habitat in Moller Creek including the portion on the development
area, and a confirmed breeding site in one of the northern ponds just within dispersal
distance of the project site. Open, non-native grassland combined with ground
squirrel and gopher burrows as well as other cracks and holes in the soil provide
suitable terrestrial habitat for this species on the project site. Additionally, tiger
salamanders that breed in the off -site ponds and upstream portions of Moller Creek
may use the project site as terrestrial habitat.
California Red -legged Frog, The California red -legged frog is a federally -listed
threatened species and a California species of special concern. These frogs have been
observed during surveys by WRA and LSA in the main stem of Moller Creek, a
tributary to Tassajara Creek (WRA 2002, 2003c, 2003f). The CNDDB also includes
numerous occurrences of red -legged frogs in Tassajara Creek and its tributaries,
including Moller Creek. The project site falls within the South and East San Francisco
Bay recovery unit for this species and is also located within the proposed critical
habitat (East San Francisco Bay Core Unit 16, within the South and East San Francisco
Bay Unit 4) for California red -legged frog. California red -legged frogs inhabit ponds,
marshes, and creeks with deep pools and riparian vegetation. They also occupy stock
ponds in open grasslands. California red -legged frogs have been documented to
disperse over two miles through upland habitat between ponds and have been
known to move overland during dry weather in response to drying ponds.
Besides Moller Creek, potential aquatic habitat in the project area exists in the
southeast stock pond (WRA 2003f). The two off -site stock ponds approximately 2,100
and 2,220 feet north of the project area also provide suitable aquatic habitat (Exhibit
4.2.2). The biological assessment for red -legged frogs prepared by WRA mentions
two additional off -site, old, silted -in, unmaintained stock ponds adjacent to Moller
Creek, approximately 1,300 and 1,900 feet north of the project site that are considered
too shallow to provide suitable aquatic habitat for red -legged frogs. No red -legged
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City of Dublin September 2012
frog tadpoles were reported during the 2003 sampling of the ponds for California
tiger salamander larvae
Since red -legged frogs are known to disperse up to two miles to and from aquatic
sites, much of the project site would be considered upland habitat for red -legged
frogs. These frogs are likely to disperse among Moller Creek, the southeast stock
pond, and the off -site stock ponds north of the project site. The parcels west of
Tassajara Road likewise provide upland habitat and dispersal habitat for California
red -legged frogs, while Tassajara Creeks provides breeding and foraging habitat as
well as cover for this species.
Pacific Pond Turtle. The Pacific pond turtle, identified as the western pond turtle in
the 1993 EIR, is a California species of special concern. This species occurs in creeks,
ponds, lakes, and marshes with emergent aquatic vegetation and suitable basking
sites. These turtles are active from February to November and are often observed
basking on sunny days. Suitable habitat for the Pacific pond turtle is present in the
project site in Moller Creek and the southeast stock pond. Pond turtles may also
inhabit the two off -site stock ponds north of the project site. Because they are known
to move long distances between aquatic and nesting sites, pond turtles may use much
of the grasslands on the Moller Ranch site as dispersal habitat. Pond turtles may also
use the open grasslands adjacent to aquatic habitat as nest sites. No Pacific pond
turtles were observed on the project site during any of the surveys; however, pond
turtles are known to occur within one mile of the project site in Tassajara Creek.
White-tailed Kite. The white-tailed kite is a fully protected species at its breeding sites.
White-tailed kites nest in trees and forage over open grasslands for California voles
and other small mammals. These mid -sized raptors are resident in California. Suitable
nesting habitat for white-tailed kites occurs in the trees on the project site. They may
also forage on the grassland habitat on the site. White-tailed kites have been known to
nest within one mile of the site near Tassajara Road.
Northern Harrier. The northern harrier is a California species of special concern at its
nesting sites. For breeding, this species prefers grasslands or marshes where the
vegetation is high enough to conceal a nest and brooding adult. They typically forage
low over open country for small mammals and birds. LSA observed one female
northern harrier north of the southeast stock pond during the August 2005 survey.
Northern harriers may breed in the grasslands on the project site.
Golden Eagle. The golden eagle is a California species of special concern and is a fully
protected species. One golden eagle was observed near the north boundary of the site
during the September 2002 site assessment. Although some tall eucalyptus trees occur
on and adjacent to the site, the trees are likely too exposed to provide good quality
nesting habitat for this species. California ground squirrel, Botta's pocket gopher, and
black -tailed jackrabbit, are common in the Project area and provide potential prey for
golden eagles. Golden eagles are likely to forage on the project site and the adjacent
grasslands on a regular basis.
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Burrowing Owl. The burrowing owl is a California species of special concern. No
specific surveys for burrowing owls were conducted; however the majority of
grasslands on the Project site provide suitable burrowing and foraging habitat for this
species. The abundant ground squirrel burrows on the site provide good quality
burrow / nesting habitat for this species. Grazing on -site also encourages use of the site
as foraging and burrowing / nesting habitat as grazing keeps the grass on -site at a low
height which is preferred by the owls.
Loggerhead Shrike. The loggerhead shrike is a California species of special concern.
This species was observed in the project area during surveys by WRA and LSA and
suitable nesting sites exist in woodland habitat along Moller Creek and Tassajara
Creek in the project area.
California Horned Lark. The California horned lark is a California species of special
concern. These ground -nesting birds occupy open habitats with short grasses, plowed
fields, deserts, shorelines, and barren areas. Grasslands in the Project area provide
suitable nesting and foraging habitat for this species. Horned larks are known to occur
in the project area.
American Badger. The American badger is a California species of special concern. This
carnivore forages and digs burrows in grassland, scrub, and woodland habitats.
Badgers eat ground squirrels, pocket gophers, and other small prey such as mice,
reptiles, insects, earthworms, and birds. Badgers may forage and den on the project
site. Badgers have been observed within one mile of the project site along Tassajara
Road.
San Joaquin Kit Fox. San Joaquin Kit Fox is a federally listed endangered species and a
State -listed threatened species. The occurrence of the San Joaquin kit fox in the vicinity
of the site has been documented. Two San Joaquin kit fox sightings were reported
within five miles and 16 sighting were reported within a ten -mile radius of the project
area. Based on information provided in the CNDDB and the East Bay Regional Park
District recent observations of San Joaquin kit foxes in the region include the
following: 1) one adult at the Vasco Caves Preserve in 2002; 2) three individuals at
Bethany Reservoir in 1998 and 1999; 3) one adult in the vicinity of Pond 001 at Brushy
Peak in 2002; 4) one adult in the vicinity of the historic tomb at the north end of the
Brushy Peak Preserve in 2002; and 5) two individuals in Carnegie State Recreation
Area in 2002. Kit foxes were also observed in Livermore, southwest of Brushy Peak in
1988.
Focused San Joaquin kit fox surveys were conducted within the vicinity of the project
area by the Habitat Restoration Group in Tassajara Valley in 1992 and by Western
Ecological Services Company (WESCO) in Dougherty Valley, immediately west of the
project area in 1991. No kit foxes were observed during either of these surveys.
On February 4, 2003, WRA conducted surveys to evaluate the suitability of the project
area for kit fox. WRA found several potential dens (large ground squirrel or other
mammal burrows) and an abundant prey source of ground squirrels and small
........._
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City of Dublin September 2012
rodents. No kit foxes or prey remains or kit fox signs at any of the potential dens were
observed during the surveys.
WRA concluded that the project site supports suitable foraging and denning habitat
for kit fox. However, WRA concluded that development of the site would not
negatively impact local kit fox populations because surveys have resulted in no
confirmed sightings, there is a lack of substantial evidence to suggest that kit foxes are
resident in the Livermore/Amador Valleys and existing and ongoing development
along Interstate 580 has further reduced the suitability of habitats in the vicinity of the
project site for San Joaquin kit foxes. However, because the Project area supports
suitable foraging and denning habitat for kit fox and could be used by kit foxes
dispersing through the area, the proposed project could result in a loss of suitable
habitat for San Joaquin kit foxes. The Eastern Dublin EIR identified potentially
significant impacts to kit fox resulting from development. A Kit Fox Protection Plan
containing comprehensive measures was adopted as a follow on to Eastern Dublin
approvals by the City of Dublin and continues to apply to this project. The Plan was
included in Appendix 8.7 of the 2007 SEIR.
CULVERT REPLACEMENT ENVIRONMENTAL SETTING
This portion of the project site is located in and adjacent to Moller Creek, a tributary to
Tassajara Creek (see Exhibit 4.2.4). The creek crossing site is located east of the
confluence of the main stem of Tassajara Creek and Moller Creek. Areas adjacent to the
project site include private open space consisting mostly of non-native grassland habitat
with some riparian habitat to the north and east, private ranch land with associated
structures and housing to the west, and new residential development to the south. The
site is dominated by riparian woodland and non-native grassland with small areas of
other aquatic habitat. Elevations of the site range from 420 to 470 feet above mean sea
level, but the creek is incised 20 to 50 feet from the top of bank. Portions of the creek
northeast of crossing have been altered. These areas exhibit flood control management
features such as rock rip -rap, poured concrete barriers, and storm water management
devices such as straw bale swaddles and similar erosion control methods. Flow is
directed into an existing culvert under Tassajara Road and continues to the southwest.
Portions of the site to the southwest are not altered but include debris such as
abandoned vehicles and litter potentially derived from nearby construction activities.
Regardless of the alterations, the creek appears to function normally.
Moller Creek biological communities. Table 4.3-3 summarizes the area of each
biological community type observed on the site. Non -sensitive biological communities
on the site include developed land and non-native annual grassland. Three sensitive
biological communities are found in the site; northern riparian woodland (mixed
riparian forest), seasonal wetlands, and other waters. Descriptions for each biological
community are contained in the following sections. Biological communities within the
site are shown on Exhibit 4.2.4.
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City of Dublin September 2012
Table 4.3-3. Biological Communities Within Moller Creek
Culvert Replacement Area
Community Type
Area (acres)
Developed land
1.21
Non-native annual grassland
4.89
Mixed riparian forest
1.88
Seasonal wetland
0.006
Other waters
0.43 (1,590 linear feet)
Total Study Area Size
8.42
Source: WRA, 2012
Non -Sensitive Biological Communities
Non-native Annual Grassland. Non-native annual grassland typically occurs in open
areas of valleys and foothills throughout California, usually on fine textured clay or
loam soils that are somewhat poorly drained. Non-native grassland is typically
dominated by non-native annual grasses and forbs along with scattered native
wildflowers. Non-native annual grassland is present along the upland areas throughout
the site, comprising approximately 4.90 acres. Plant species observed in this area
included slender wild oat (Avena barbata), soft chess (Bromus hordeaceus), yellow
starthistle (Centaurea solstitialis), and foxtail chess (B. madritensis ssp. madritensis).
Species adapted to more alkaline conditions such as salt grass (Distichlis spicata) also
exist in scattered populations throughout the site.
A number of wildlife species are associated with annual grassland in eastern Alameda
County and are expected to use the project site. Mammals that breed and burrow in this
habitat type include California ground squirrel (Spermophilus beecheyi), pocket gopher
(Thomomys bottae), California vole (Microtus californicus), black -tailed hare (Lepus
californicus) and California meadow mouse (Micrrotus californieus californicus). These
species provide an important prey base for raptors and predatory mammals including
American badger (Taxidea taxns), red fox (Vulpes vulpes), coyote (Canus latrans), and grey
fox (Urocyon cinereoargenteus). Avian species that breed or forage in this type of annual
grassland include western meadowlark (Stnrnella neglecta), savannah sparrow
(Passerculus sandwichensis), burrowing owl (Athene cunicularia), barn owl (Tyto alba),
golden eagle (Aquila chrysaetos), and red-tailed hawk (Buteo jamaicensis). Reptile species
common to annual grassland habitats include western fence lizard (Sceloporus
occidentalis) and gopher snake (Pituophis melanoleums). In addition, amphibian species
including California red -legged frog (Rana aurora draytonii) and California tiger
salamander (Ambystoma californiense) can utilize annual grassland for upland and
migratory habitat.
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City of Dublin September 2012
Developed and landscaped. Several temporary construction buildings and
equipment/material staging areas are present in areas east and southeast of the project
site. A majority of the vegetation within these residential development areas has been
removed through grading and home building, though evidence of hydroseeding along
the peripheries of the development is abundant. These hydroseeded areas are adjacent
to the project site, upland of the Moller Creek, and separated from the site by black silt
fencing. Remaining vegetation in this area includes non-native and ruderal species such
as black mustard (Brassica nigra) and bristly ox-tongue (Helminthotheca echioides). A
number of ranch -related structures including a trailer, barn, and several homes exist
northwest of the site between Tassajara Road and Tassajara Creek. Vegetation in this
area is sparse, located between structures, and dominated by ripgut brome (Bromus
diandrus) and other exotic annuals such as yellow starthistle, and Russian thistle (Salsola
tragus). In addition, a number of large eucalyptus trees (Eucalyptus globulus) are growing
around the developed portions of the site.
Wildlife species associated with developed areas include city pigeons (rock pigeon,
Columba livia), house sparrow (Passer domesticus), house mice (Mus musculus), and other
species adapted to human structures and disturbance. The eucalyptus trees provide
potential nesting habitat for raptors, and day roosting sites for barn owls.
Sensitive Biological Communities
Mixed riparian forest. Mixed riparian forest exists along the creek on the site. This habitat
type is described as northern mixed riparian woodland that is subject to policies in the
Dublin General Plan and the Eastern Dublin Specific Plan, and could be impacted by
the expansion of the bridge spanning Tassajara Creek. Additionally, this habitat is
covered under the EACCS. Valley oak (Quercus lobata), box elder (Acer negundo), and
willows (Salix spp.) dominate the overstory of this woodland and reach heights up to
approximately 50 feet. The understory includes non-native grasses, and riparian species
in the creek bed include willows, cattail (Typha spp.), and bulrush (Schoenoplectus
acutus). The creek lies 20-50 feet below the surrounding lands in a deeply incised
channel with bluff -like banks. In some locations this channel reaches widths greater
than approximately 300 feet.
The riparian forest provides abundant habitat for a diverse range of wildlife species.
Many resident and migrant avian species, mammals, and riparian and aquatic
associated species would be expected along this corridor. Dense brush provides cover
for species migrating through this area, and tree canopies provide habitat for nesting
and wintering species. Common avian species include chestnut -backed chickadee
(Poecile rufescens), oak titmouse (Baeolophus inornatus), bushtit (Psahriparus minimus),
song sparrow (Melospiza rnelodia), woodpeckers (Picoides spp.), towhees (Pipilo spp.), and
mourning dove (Zenaida macroura). Neotropical migrants may also be found in this
riparian forestduring spring and fall months (including warblers, vireos, and
flycatchers), and winter migrants include the ruby -crowned kinglet (Regulus calendula)
and Townsend's warbler (Dendroica townsendii). Several species of raptors would be
likely to nest in this area due to the proximity to foraging habitat and presence of large
trees. Amphibian and reptile species including pacific tree frog (Hyla regilla), western
toad (Bufo borealis), California red -legged frog, common garter snake (Thamnophis
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City of Dublin September 2012
sirtalis), and alligator lizard (Elgaria multicarinata) are also likely to be found along the
riparian corridor.
Wetlands. The aquatic habitat within Moller Creek consists of areas of seasonal and
perennial open water, as well as wetland areas vegetated by aquatic plants and
emergent vegetation along the margins of the creek. Exhibit 4.2.4 illustrates wetland
and waters potentially subject to regulatory jurisdiction on the site.
Seasonal wetlands identified as potentially jurisdictional wetlands were present
adjacent to the waters of the U.S. Seasonal wetlands on then site were dominated by
facultative to obligate wetland species including bulrush, common rush (Juncos patens),
mugwort (Artemisia douglasiana), willow, and bristly ox-tongue. Soils in areas identified
as seasonal wetlands generally consisted of loamy clay. Oxidized root channels or
concretions were found in small pockets throughout the wetland test pits. Vegetation in
seasonal wetlands also passed the FAC-neutral test.
The border between seasonal wetland and upland communities was determined
primarily by vegetation: areas dominated by upland vegetation species were not
included in the areas identified as potentially jurisdictional wetlands. Soils in the areas
identified as uplands lacked hydric soil indicators. While oxidized root channels were
present at sample points UP3 and UP4, dominance of upland plant species precluded
them from being potentially jurisdictional wetlands.
All wetlands mapped and presented in this report are likely to be considered
jurisdictional by the Corps as they are directly connected to a "navigable waters of the
U.S." (Tassaraja Creek to Arroyo Mucho to Arroyo de la Laguna to Alameda Creek to
Coyote Hills Slough and eventually to San Francisco Bay).
Other waters of the U.S. and Waters of the State. The majority of the active waters of Moller
Creek were within the ordinary high water mark, areas saturated or flooded ranged
from one foot to five feet in width. Water was present both east and west of the bridge
crossing at the time of the field visit. The ordinary high water mark was visible on the
sides of the channel as well as indications of a rack line. These saturated and semi
permanently flooded portions of the creek are potentially "waters of the U.S." and
"waters of the State."
Area Exempt from Section 404 Jurisdiction. There are no isolated wetlands or man -induced
wetlands on the project site. All wetlands mapped and presented in this report are
likely to be considered jurisdictional by the Corps as they were not created by human
activities and are directly connected to a "navigable waters of the U.S." (Tassarjara
Creek and San Francisco Bay).
Special -Status Species
Plants. Forty-nine (49) special -status plant species have been documented in the vicinity
of the project site. The project site has the potential to support 12 species. Appendix B
contained in the full WRA report (Appendix 8.8) summarizes the potential for
occurrence for each special -status plant species occurring in the vicinity of the site. No
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 99
City of Dublin September 2012
special -status plant species were observed site during the assessment site visit. One of
the special -status plant species has a high potential to occur on the project site and the
remaining 11 special -status plant species have a moderate potential to occur. The
remaining 37 species documented to occur in the vicinity of the site are unlikely or have
no potential to occur. Most of these species occur in chaparral, cismontane woodland or
vernal pool habitat with low plant cover or on special soil types such alkaline clay or
saline sandy soils. Special -status plant species that are most likely (high or moderate
potential) to occur on the project site are discussed below and illustrated on Exhibit
4.2.4.
Heartscale (Atriplex cordulata). Federal Listing Status: None; State Listing Status:
None; CNPS List: 113.2. Moderate Potential. Heartscale is an annual herb in the
goosefoot family (Chenopodiaceae) that blooms from April to October. It is found in
alkaline or saline, sandy soils in chenopod scrublands, meadows and seeps, and
valley and foothill grasslands below approximately 1240 ft. CNPS (2012) notes that
this species is very similar to the related species closely related to A. depressa and A.
parishii). This species is documented in Alameda, Butte, Fresno, Kern, Madera,
Merced, and Tulare counties. It is presumed extinct from Stanislaus County. The site
includes valley and foothill grasslands and alkaline soils.
Brittlescale (Atriplex depressa). Federal Listing Status: None; State Listing Status:
None; CNPS List: 113.2. Moderate Potential Brittlescale is an annual herb in the
goosefoot family (Chenopodiaceae) that blooms from April to October. The species
grows in relatively barren areas with alkaline clay soils within chenopod scrub,
meadows and seeps, playas, vernal pools, valley and foothill grassland, and
occasionally in riparian marshes at elevations ranging from 3 to 1050 ft. Atriplex
species are somewhat tolerant of disturbance. The site includes valley and foothill
grassland and riparian woodland but does not include riparian marsh or alkaline
clay.
San Joaquin spearscale (Atriplex joaquiniana). Federal Listing Status: None; State
Listing Status: None; CNPS List: 113.2. Moderate Potential. San Joaquin spearscale is
an annual herb in the goosefoot family (Chenopodiaceae) that blooms from April to
October. It is found in alkaline soils in chenopod scrublands, meadows and seeps,
playas, and valley and foothill grasslands from 3 to 2740 ft elevation above sea level.
The site includes valley and foothill grasslands but lacks alkaline or saline soils.
However, the EACCS has modeled a portion of Tassajara Creek northeast of the site
as potential habitat. Additionally, the plant species is known to occur within five
miles of the project site (Cottonwood Creek).
Lesser saltscale (Atriplex minuscula). Federal Listing Status: None; State Listing_
Status: None; CNPS List: 113.1. Moderate Potential Lesser saltscale is an annual herb
in the goosefoot family (Chenopodiaceae) that blooms from May to October. This
plant occurs in alkali sinks and grasslands in sandy, alkaline soils within chenopod
scrub and valley and foothill grassland communities at elevations between 49 and
656 ft above sea level. CNPS (2012) notes that this species is very similar to the
related species crownscale (Atriplex coronata var. coronata). The site includes valley
and foothill grasslands and alkaline.
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Round -leaved filaree (California macrophylla, formerly Erodium macrophyllum).
Federal Listing Status: None; State Listing Status: None; CNPS List: 113.1. Moderate
Potential. Round -leaved filaree is an annual herb in the geranium family
(Geraniaceae) that blooms from March to May. This species occurs on clay soils in
valley and foothill grassland or open cismontane woodland habitats at elevations
from 49 to 3937 ft. It occurs in 92 USGS 7.5-minute quadrangles throughout the state
in Alameda, Contra Costa, Colusa, Fresno, Glenn, Kings, Kern, Lake, Lassen, Los
Angeles, Merced, Monterey, Napa, Riverside, Santa Barbara, San Benito, Santa
Clara, San Diego, San Joaquin, San Luis Obispo, San Mateo, Solano, Sonoma,
Stanislaus, Tehama, Ventura, and Yolo counties, and within habitats from Oregon to
Baja California. It is considered extirpated from Butte County and from Santa Cruz
Island. Many collections of the species are historic. This species is threatened by
urbanization, habitat alteration, vehicles, pipeline construction, feral pigs, and non-
native plants; it is also potentially threatened by grazing. The includes valley and
foothill grasslands underlain by a clay soil.
Congdon's tarplant (Centromadia parryi ssp. congdonii). Federal Listing Status: None;
State Listing Status: None; CNPS List: 113.2. High Potential. Congdon's tarplant is an
annual herb that occurs in valley and foothill grasslands, particularly those with
alkaline substrates, and in slumps or disturbed areas where water collects. It is
restricted to lower elevation wetlands below approximately 760 ft. Congdon's
tarplant, which is in the composite family (Asteraceae), has a variable blooming
period that extends from June through November. The range of this species has been
reduced to remaining alkaline grasslands in Alameda, Contra Costa, San Mateo,
Monterey, San Luis Obispo, and Santa Clara counties, and it is presumed to be
extinct from its historical range in Solano and Santa Cruz counties. CNPS considers
this species to be severely threatened by development (CNPS 2012). This species has
been identified in areas nearby, but not on the site.
Hispid salty bird's beak (Chloropyron molle ssp. hispidum formerly Cordylanthus mollis
ssp. hispidus). Federal Listing Status: None; State Listing Status: None; CNPS List:
1B.1. Moderate Potential. Hispid salty bird's beak is an annual, hemiparasitic herb in
the figwort family (Scrophulariaceae) that blooms from June to September. It occurs
in alkaline soils in meadow and seep, playa, and valley and foothill, grassland
habitats at elevations from 3 to 509 ft. Hispid salty bird's beak is documented from
14 USGS 7.5-minute quadrangles in Alameda, Fresno, Kern, Merced, Placer, and
Solano counties. It is apparently extirpated from much of the lower San Joaquin
Valley and is threatened by agricultural conversion, development, and grazing
(CNPS 2012). The project site includes valley and foothill grasslands and alkaline
soils.
Palmate saltv bird's beak (Chloroppron palmatum formerl
Federal Listing Status: Endangered; State Listing Status: Endangered; CNPS List:
113.1. Moderate Potential. Palmate salty bird's beak is a hemiparasitic annual herb in
the snapdragon family (Scrophulariaceae) that blooms from May to October. It is
found in alkaline soils in chenopod scrublands and valley and foothill grassland
habitats at elevations from 16 to 509 ft. Palmate salty bird's beak is documented in 14
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City of Dublin September 2012
USGS 7.5-minute quadrangles in Alameda, Colusa, Fresno, Madera, and Yolo
counties. It is introduced in Glenn County, and is presumed extinct from San
Joaquin County (CLAPS 2012). The site includes valley and foothill grasslands and
alkaline soils.
Livermore tarplant (Deinandra bacigahtpi). Federal Listing Status: None; State Listing
Status: None; CNPS List: 113.2. Moderate Potential. Livermore tarplant is an annual
herb in the composite family (Asteraceae) and can bloom from June to October
(CNPS 2012). It occurs in alkaline meadows and seeps at elevations from 495 to 615
ft. Presently, it is known from fewer than five occurrences and has a very small
endemic range centered in one USGS quadrangle (Altamont) in Alameda County.
However, Livermore tarplant was only discovered outside of Livermore in the late
1990s and may occur in a wider range of elevations and/or alkaline habitats (such as
sinks), and could reasonably be expected to occur in similar habitats in neighboring
Contra Costa County. This species is possibly threatened by development and wind
energy projects. The project site includes valley and foothill grasslands and alkaline
soils.
Western leatherwood (Dirca occidentalis). Federal Listing Status: None; State Listing
Status: None CNPS List: 113.2. Moderate Potential Western leatherwood is a
deciduous shrub in the mezereum family (Thymelaeaceae) that blooms from
January to April, and sometimes as late as May. It is endemic to California, and is
the only species in its family found in the state. This shrub occurs in mesic
broadleafed upland forest, closed -cone coniferous forest, chaparral, cismontane
woodland, North Coast coniferous forest, riparian forest, and riparian woodland
habitats from 164 to 1296 ft in elevation. The species has been documented in 19
USGS quadrangles in Alameda, Contra Costa, Marin, Santa Clara, San Mateo, and
Sonoma counties. Road maintenance may impact the species; however, populations
are also generally declining due to low reproductive rates (CNPS 2012). The site
includes valley and foothill grasslands and riparian woodland habitats underlain by
a clay soil.
Diamond -petaled California poppy (Eschscholzia rhombipetala). Federal Listing Status:
None; State Listing Status: None; CNPS List: 113.1. Moderate Potential. \Diamond -
petaled California poppy is an annual herb in the poppy family (Papaveraceae) that
blooms from March to April. This species occurs in alkaline, clayey soils in valley
and foothill grassland habitats from 0 to 3200 ft in elevation. This California endemic
has been documented in 12 USGS quadrangles in Alameda, San Joaquin, and San
Luis Obispo counties. It is believed extirpated from Contra Costa, Colusa, and
Stanislaus counties. The plant was rediscovered on the Carrizo Plain in 1992, but has
not been seen again since 1995. It was also found at a Lawrence Livermore
Laboratory site in 1997. Agriculture and grazing threaten the species (CNPS 2012).
The site includes valley and foothill grasslands underlain by a clay soil.
Diablo helianthella (Helianthella castanea). Federal Listing Status: None; State Listing
Status: None; CNPS List: 113.2. Moderate Potential Diablo helianthella is a perennial
herb in the composite family (Asteraceae) that blooms from March to June. This
species occurs in broad -leafed upland forest, chaparral, cismontane woodland,
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 102
City of Dublin September 2012
coastal scrub, riparian woodland, and valley and foothill grassland habitats from 197
to 4265 ft elevation. It is a California endemic found in 18 USGS quadrangles in
Alameda, Contra Costa, San Diego, and San Mateo counties. It is believed to be
extinct in Marin and San Francisco counties. The site includes valley and foothill
grasslands and riparian woodland habitat.
The site assessment occurred during the blooming period of four of the 12
special -status plant species with a moderate or high potential to occur in the
Study Area; however, none of the potentially blooming species was observed.
Wildlife. Seventy-one special -status species of wildlife have been recorded in the vicinity
of the Study Area. Appendix B contained in the full biological assessment for the
culvert replacement summarizes the potential for each of these species to occur on the
project site. No special -status wildlife species were observed in the Study Area during
the site assessment. One special -status wildlife species has a high potential to occur in
the project site. Fifteen special -status wildlife species have a moderate potential to occur
in the project area and are discussed below and illustrated on Exhibit 4.2.3
Pallid bat (Antrozous pallidus). CDFG Species of Special Concern, WBWG High
Priority. Moderate Potential. Pallid bat is distributed from southern British
Columbia and Montana to central Mexico, and east to Texas, Oklahoma, and Kansas.
This species occurs in a number of habitats ranging from rocky and deserts to
grasslands, and into higher elevation coniferous forests. Pallid bats often roosts in
colonies of between 20 and several hundred individuals. Roosts are typically in rock
crevices, tree hollows, mines, caves, and a variety of man-made structures, including
vacant and occupied buildings. Tree roosting has been documented in large conifer
snags (e.g. ponderosa pine), inside basal hollows of redwoods and giant sequoias,
and within bole cavities in oak trees. It has also been reported roosting in stacks of
burlap sacks and stone piles. Pallid bat is primarily insectivorous, feeding on large
prey that is taken on the ground, or sometimes in flight. Prey items include
arthropods such as scorpions, ground crickets, and cicadas. The rock rip -rap and
trees provide roost sites for pallid bats within the project site and there is foraging
habitat in the adjacent grasslands.
Western red bat (Lasiurus blossevillii). CDFG Species of Special Concern, WBWG
High Priority. Moderate Potential. This species is highly migratory and broadly
distributed, reaching from southern Canada through much of the western United
States. It is typically solitary, roosting primarily in the foliage of trees or shrubs. Day
roosts are commonly in edge habitats adjacent to streams or open fields, in orchards,
and sometimes in urban areas possibly and association with riparian habitat
(particularly willows, cottonwoods, and sycamores). Trees in the riparian woodland
provide roost sites on the site which is adjacent to open grasslands.
Hoary bat (Lasiurus cinereus). CDFG Species of Special Concern. Moderate Potential.
This species is most abundant in the forests and croplands of the Plains states and in
forests of the Pacific Northwest, and is also found in the forests of the eastern United
States and the and deserts of the Southwest. Diverse woodland habitats with a
mixture of forest and small open areas that provide edges are ideal for this species.
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City of Dublin September 2012
This species has been found in Spanish moss, squirrel nests, woodpecker holes, and
out in the open on the trunks of trees. Summer tree roosts are typically located along
edge habitats close to feeding grounds. Most females rear young in deciduous trees,
while males prefer to roost in conifers. Both sexes appear to prefer older trees as
roosts, which they use for up to 5 weeks, and apparently provide greater safety.
Trees in the riparian woodland provide roost sites project site which is adjacent to
open grasslands.
Long-eared myotis (Myotis evotis). WBWG Medium Priority. Moderate Potential.
Long-eared myotis is primarily associated with coniferous forest, but is also found
in semiarid shrublands, sage, chaparral, and agricultural areas. This species roosts
under exfoliating tree bark, in tree hollows, caves, mines, crevices in rocky outcrops,
in buildings, under bridges and occasionally on the ground. Long-eared myotis
primarily consumes beetles and moths, gleaning prey from foliage, trees, rocks and
from the ground. Rock rip -rap and trees provide roost sites and foraging habitat on
the project site.
American badger (Taxidea taxus). CDFG Species of Special Concern. Moderate
Potential. American badger occurs throughout California in drier open stages of
most scrub, forest, and herbaceous habitats, where loose, gravelly soils suitable for
burrowing are present, as well as suitable prey populations. Badger prey includes
small mammals like ground squirrel, rats, gophers and mice, which it digs out of the
ground using its claws. Potential burrow sites and ample prey species were
observed during the assessment, but proximity of active construction to potential
burrows on the eastern side of the creek may preclude occurrence.
Northern harrier (Circus cyaneus). CDFG Species of Special Concern. Moderate
Potential. Northern harrier populations have decreased in recent decades but can be
locally abundant where suitable habitat exists free of disturbance. Destruction of
wetland habitat, native grassland, moist meadows, and burning and discing of
nesting areas during early stages of the breeding cycle are major causes of their
decline. Northern harrier frequents meadows, grasslands, open rangelands, desert
sinks, and fresh and saltwater emergent wetlands. Open areas of tall, dense grasses,
moist or dry shrubs, and edges are used for nesting, cover, and feeding. The non-
native annual grassland provides foraging habitat for the northern harrier, but there
is only marginal nesting habitat on the project site. Therefore, there is a moderate
potential for occurrence.
White-tailed kite (Elanus leucurus). CDFG Fully Protected Species. Moderate
Potential. White-tailed kite occurs in low elevation grassland, agricultural, wetland,
oak woodland, and savannah habitats. Riparian zones adjacent to open areas are
also used. Vegetative structure and prey availability seem to be more important than
specific associations with plant species or vegetative communities. Lightly grazed or
ungrazed fields generally support large prey populations and are often preferred to
other habitats. Kite primarily feeds on small mammals, although, birds, reptiles,
amphibians, and insects are also taken. Nest trees range from single isolated trees to
trees within large contiguous forests. Preferred nest trees are extremely variable,
ranging from small shrubs (less than 10 ft. tall), to large trees (greater than 150 ft.
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City of Dublin September 2012
tall). Foraging habitat and nest trees for white-tailed kite exist in the non-native
annual grassland and riparian woodland portions of the site.
Golden Eagle (Aquila chrysaetos), CDFG Fully Protected Species, CDFG Species of
Special Concern. Moderate Potential. Golden eagle is found in open and semi -open
areas from sea level to 3600 in elevation, in habitats including tundra, shrub lands,
grasslands, mixed woodlands, and coniferous forests. Golden eagle is usually found
in mountainous areas, but it also nests in wetland, riparian and estuarine habitats.
This large raptor typically nests in large isolated trees or cliffs. Golden eagle forages
over large areas, feeding primarily on ground squirrels, rabbits, large birds, and
carrion. The project site is located northwest of the Golden Eagle Protection Zone
illustrated in Figure 6.3 of the Eastern Dublin Specific Plan. The large eucalyptus
trees may offer nesting habitat; however, proximity to high levels of human
disturbance may preclude nesting in this area.
Burrowing owl (Athene cunicularia). CDFG Species of Special Concern; USFWS Bird
of Conservation Concern. Moderate Potential. Burrowing owl typically favors flat,
open grassland or gentle slopes and sparse shrub land ecosystems. This owl prefers
annual or perennial grasslands, typically with sparse or nonexistent tree or shrub
canopies; however, it also colonize debris piles and old pipes. Burrowing owl
exhibits high site fidelity and usually nests in abandoned burrows of ground
squirrels or pocket gophers. Burrowing owl has been recently observed within the
Study Area and breeding pairs within 0.5 — 2.0 miles of the site. The non-native
annual grassland within the Study Area provides potential burrow sites for
burrowing owl; however, proximity to high levels of human disturbance may
preclude nesting in this area.
Loggerhead shrike (Lanius ludovicianus). CDFG Species of Special Concern, USFWS
Bird of Conservation Concern. Moderate Potential. A common resident of lowlands
and foothills throughout California, this species prefers open habitats with scattered
trees, shrubs, posts, fences, utility lines or other perches. Nests are usually built on a
stable branch in a densely -foliaged shrub or small tree. This species is found most
often in open -canopied valley foothill hardwood, conifer, pinyon -juniper, or desert
riparian habitats. While this species eats mostly arthropods, it also takes
amphibians, small reptiles, small mammals or birds, and is also known to scavenge
on carrion. The site contains non-native annual grassland, ample perches, and
several trees and shrubs appropriate for nesting.
Nuttall's woodpecker (Picoides nuttallii). USFWS Bird of Conservation Concern.
High Potential. This species is associated with intact oak and riparian woodlands,
rarely in conifers and is a primary cavity nester. The riparian woodland provides
nesting and foraging opportunities for Nuttall's woodpecker, and there are
observations of this species in and near Tassajara Creek Regional Park.
Oak titmouse (Baeolophus inornatus). USFWS Bird of Conservation Concern.
Moderate Potential. Oak titmouse occurs in open woodlands of oak, pine and oak,
and juniper and oak. The nest is built in woodpecker holes and natural cavities;
titmice sometimes partially excavate their own cavity. The riparian woodland does
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City of Dublin September 2012
provide habitat for this species, and there are observations of this species in and near
Tassajara Creek Regional Park.
Grasshopper sparrow (Ammodramus savannarum). CDFG Species of Special Concern.
Moderate Potential. Grasshopper sparrow generally prefers moderately open
grasslands and prairies with patchy bare ground. This species selects different
components of vegetation, depending on grassland ecosystem. This sparrow
typically avoids grasslands with extensive shrub cover, although some level of
shrub cover is important for birds in western regions. Grasshopper sparrows are
ground -nesting birds. The nest cup is domed with overhanging grasses and a side
entrance. Eggs are usually laid in early to mid -June and hatch 12 days later. Males
and females provide care to the young and second broods are common. This species
feeds primarily on insects.
Western pond turtle (Actinemys marmorata). CDFG Species of Special Concern.
Moderate Potential. Western pond turtle is the only native freshwater turtle in
California. This turtle is uncommon to common in suitable aquatic habitat
throughout California, west of the Sierra -Cascade crest and Transverse Ranges.
Western pond turtle inhabits perennial aquatic habitats, such as lakes, ponds, rivers,
streams, and canals that provide submerged cover and suitable basking structures,
such as rocks and logs. Western pond turtle prefers to nest on unshaded upland
slopes close to their aquatic habitat, and hatchlings require shallow water with
relatively dense emergent and submergent vegetation for foraging for aquatic
invertebrates). This section of Tassajara Creek does not provide suitable breeding
habitat because it does not have the proper components for successful rearing. The
steep banks provide poor upland habitat for adults and juveniles and the pools that
are left after rain events do not have adequate vegetation for foraging or cover.
However, potential breeding habitat within the EACCS Study Area is located
approximately 6,980 feet northwest of the Project Area. Therefore, there is a
moderate potential for a dispersing individual to migrate through the project site.
California red -legged frog (Rana draytonii). Federal Threatened Species, CDFG
Species of Special Concern. Moderate Potential. California red -legged frog (CRLF) is
dependent on suitable aquatic, estivation, and upland habitat. During periods of wet
weather, starting with the first rainfall in late fall, CRLF disperses away from its
estivation site to seek suitable breeding habitat. Aquatic and breeding habitat is
characterized by dense, shrubby, riparian vegetation and deep, still or slow -moving
water. Breeding occurs between late November and late April. CRLF estivates
(period of inactivity) during the dry months in small mammal burrows, moist leaf
litter, incised stream channels, and large cracks in the bottom of dried ponds.
Although there are pools in the creek, they likely do not contain water for a long
enough period and they do not contain emergent vegetation for egg -deposition.
Therefore, this section of creek is not aquatic breeding habitat, but is non -breeding
aquatic and dispersal habitat. There is limited upland habitat adjacent to the creek
because of steep banks from the incised creek. CRLF occurrences in the mainstem of
Tassajara Crek indicate there is a breeding population in close proximity to the
Study Area. Potential breeding habitat within the EACCS Study Area is located
approximately 6,980 feet northwest of the project site; however, additional CRLF
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City of Dublin September 2012
breeding ponds are located within one mile from the site but outside of the EACCS
Study Area. Furthermore, there are eleven CRLF occurrences within two miles of the
site.
Although the area within the creek and directly adjacent to Tassajara Road do not
support breeding habitat, a majority of the site provides suitable dispersal and
upland habitat. Upland habitat is defined in the California Red -Legged Frog Recovery
Plan as a primary constituent element for CRLF. Upland habitat is further defined as
habitat within 300 feet of aquatic breeding and aquatic non -breeding habitat.
Although impacts to dispersal habitat within designated Critical Habitat require
consultation with USFWS, portions of the site greater than 300 feet from aquatic
habitat by definition are categorized as CRLF dispersal habitat and not upland
habitat. Additionally, the site is located in potential upland/movement habitat as
illustrated on Figure D-9 of the EACCS. The project site was qualitatively assessed
based on Table E-5 of the EACCS and received a scoring of 49 for CRLF (Appendix E
of attached WRA report).
California Tiger Salamander (Ambystoma californiense). Federal Threatened Species
State Threatened Species. Moderate Potential. California tiger salamander (CTS) is
restricted to grasslands and low -elevation foothill regions in California (generally
under 1500 feet) where it uses seasonal aquatic habitats for breeding. The
salamanders breed in natural ephemeral pools, or ponds that mimic ephemeral
pools (stock ponds that go dry), and occupy substantial areas surrounding the
breeding pool as adults. CTS spends most of its time in the grasslands surrounding
breeding pools. The species survives hot, dry summers by estivating (going through
a dormant period) in refugia where the soil atmosphere remains near the water
saturation point. Refugia may consist of burrows created by ground squirrels and
other mammals and deep cracks or holes in the ground. During wet periods, the
salamander may emerge from refugia and feed in the surrounding grasslands.
Streams and creeks are not aquatic breeding habitat or used for dispersal by this
species, but the non-native grassland portion of the site is potential upland habitat
and there are approximately nine documented occurrences within two miles of the
project site, four of which occur within 7, 218 feet.
Although breeding habitat is not present, CTS may aestivate and disperse within the
project site and has a moderate potential to occur. The following table summarizes
literature citations for sub -adult CTS dispersal:
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City of Dublin September 2012
Table 4.2-4. Predicted Dispersal Distances of
Sub -adult California Tiger Salamander from Natal Pools
Proportion of Dispersing Sub -adult
Distance
Reference
Population
(meters/feet)
50%
380m/1,247ft
Trenham and Shaffer
2005
9070
590m/1,936ft
Trenham and Shaffer
2005
95%
630m/2,067ft
Trenham and Shaffer
2005
99% of interpond dispersal
1,100m/3,609 ft
Trenham et al. 2001,USFWS
2005
Furthest documented CTS movement
2,200m / 7,218ft
Orloff 2007
Source: WRA, 2012
Federal -Listed Species that are Unlikely to Occur. Species listed under the Federal
Endangered Species Act (FESA) that are documented to occur within the vicinity of the
Study Area, but are unlikely to occur in the Study Area include: San Joaquin kit fox
(Vulpes macrotis mutica) and Alameda whipsnake (Masticophis lateralis euryxanthus).
These species are discussed in the attached WRA report (Appendix 8.8)
Focused arborist survey. On April 26, 2012, WRA, Inc. arborist Morgan Trieger (ISA-
Certified Arborist WE-8667A) performed an inventory and visual assessment of trees
within the Focused Arborist Survey Area. The inventory and assessment was located
within an approximately 1.5-acre area approximately bounded by the top of bank of
Moller Creek (see Figure 1 of Appendix D, attached).
A total of 65 trees were inventoried within the Focused Arborist Survey Area, four of
which are classified as Heritage Trees under the city ordinance. Tree species observed
included valley oak (Quercus lobata), red willow (Salix laevigata), arroyo willow (S.
lasiolepis), Northern California black walnut (Juglans hindsii), California buckeye
(Aesculus californica) and almond (Prunus dulcis). A map depicting the locations of all
trees is included in Appendix D of the attached WRA report.
IMPACTS AND MITIGATION MEASURES FROM THE EASTERN DUBLIN EIR
The Eastern Dublin EIR included a comprehensive assessment of habitat and wildlife
resources in the EIR planning area. The EIR identified potential impacts related to the
general effects of potential development in Eastern Dublin, including direct habitat loss,
indirect habitat loss due to vegetation removal for construction and development
activities, and loss or degradation of sensitive habitat (Impacts 3.7/A, B, and Q. The
Eastern Dublin EIR also identified potential impacts related to wildlife species such as the
San Joaquin kit fox, CRLF, CTS, and others (Impacts 3.7/1) — S). Raptor electrocutions
associated with proposed high -voltage power lines were addressed in depth in the 1993
Eastern Dublin EIR and included a number of mitigation measures (MM 3.7/26.0a-d).
Mitigation measures were adopted to, among other things, prepare resource management
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City of Dublin September 2012
plans, avoid development in sensitive areas, and revegetate disturbed areas (generally
MM 3.7/ 1.0 — 28.0). All mitigation measures adopted upon approval of the Eastern
Dublin EIR continue to apply to the proposed Project.
Even with mitigation, the City concluded that the cumulative loss or degradation of
botanically sensitive habitat was significant and unavoidable. Upon approval of the
Eastern Dublin GPA/SP, the City adopted a Statement of Overriding Considerations for
this significant unavoidable impact (Resolution No. 53-93).
The Eastern Dublin EIR analyzed cumulative impacts on biological resources within the
portions of Alameda and Contra Costa Counties in the general vicinity of the Eastern
Dublin area. At that time, Contra Costa County had an Urban Limit Line that functioned
as a growth boundary. That Urban Limit Line placed all of the Dougherty and Tassajara
valleys inside the growth boundary (i.e., allowing development of those areas), and
placed lands to the east of Tassajara Valley and north of the County line outside the
growth boundary. Alameda County had no comparable growth boundaries; instead,
planning for the Alameda County portions of this region was performed by the cities of
Dublin and Livermore.
The Eastern Dublin EIR identified one significant cumulative biological impact. Impact
3.7/ C identified the continued loss and deterioration of botanically sensitive habitat,
particularly riparian habitat.
SUPPLEMENTAL IMPACTS AND MITIGATION MEASURES FROM THE
CASAMIRA VALLEY SUPPLEMENTAL EIR
The Casamira Valley EIR contains a number of supplemental biological impacts
and mitigations. These are:
Impact BIO-1 found that construction of the proposed project would
directly and indirectly impact approximately 150 acres of habitat for
special -status species that occurs on the Moller Ranch Project site. This
impact was reduced to a less -than -significant level by adherence to
Mitigation Measures SM-13I0-1a , 1b and 1c. These measures require
preservation of habitat for listed species, provide an endowment for the
preserved lands and to prepare a comprehensive habitat mitigation and
monitoring plan for preserved lands and protected species.
• Impact BIO-2 identified an impact on an estimated 0.20 acres (63
individuals) of Congdon's tarplant (a CNPS List 113 plant) that occur in the
project area. Mitigation Measure SM-BIO-2 requires the project developer
to develop and implement a salvage and recovery plan for Congdon's
Tarplant to reduce this impact to a less -than -significant level.
Impact BIO-4 stated that development on the Moller Ranch property
would result in the loss of approximately 150 acres of CTS upland
(terrestrial) habitat and 1.5 acres of potential breeding habitat in Moller
Creek. Adherence to Mitigation Measures SM-13I0-4a, 4b, 4c, 4d, 4e and
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City of Dublin September 2012
4g reduces this impact to a less -than -significant level by requiring the
project developer to preserve an off -site mitigation area at a 3:1 ratio,
establishing a conservation easement over this area, capture tiger
salamanders and relocate to the conservation area, implementation of
exclusion fencing for tiger salamanders from future development areas,
limiting use of rodentcides for ground squirrel control and include design
features into the main Project roadway to allow free movement of
salamanders across the road.
Impact BIO-5 identified an impact in terms of loss of adult, larvae, and
juvenile CRLF through grading and construction activities, including road
and bridge building across Moller Creek, conversion of approximately 44
acres of CRLF upland/dispersal habitat to urban land uses, and
degradation of approximately 1.5 acres of breeding habitat within the
creek. This impact was reduced to a less -than -significant level by
adherence to Mitigation Measures SM-13I0-5a, 5b, 5c, 5d, 5e and 5f. These
measures require creation of compensatory off -site aquatic habitat at a 2:1
ratio, preparation of a mitigation and monitoring plan for preservation of
CRLF species, establishment of an endowment for the conservation
easement area and design of the main roadway to allow for free and safe
movement of amphibians across the road.
Impact BIO-6 noted that the proposed project would result in the loss of at
least approximately 150 acres of potential burrowing owl habitat. This
impact was reduced to a less -than -significant level by adherence to
Mitigation Measures SM-BIO-6a and 6b. These measures require the
preservation of approximately 450 acres of off -site suitable grassland
habitat as compensatory habitat, completion of preconstruction surveys
before grading activities on the Moller site and protocols to be followed if
owls are found on the site.
Impact BIO-7 found that the proposed project would result in the loss
of habitat nesting raptors, loggerhead shrikes, and horned larks which
were not addressed in the Eastern Dublin EIR. This impact was reduced
to a less -than -significant level by adherence to Mitigation Measures
SM-BIO-7 that requires preconstruction surveys prior to tree pruning,
tree removal or grading. In addition exclusion fencing shall be installed
around identified nest sites and monitored by a qualified biologist. A
monitoring report shall be submitted to the California Department of
Fish & Game on a yearly basis.
Impact BIO-8 noted that the proposed project would result in impacts
to the wildlife movement corridors for CTS and CRLF. This impact was
reduced to a less -than -significant level by adherence to Mitigation
Measures SM-13I0-8 that requires the main access road be designed to
ensure safe crossing by amphibian species.
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REGULATORY SETTING
Biological resources are regulated by the following:
Federal Endangered Species Act. The Federal Endangered Species Act (FESA) protects
listed wildlife species from harm or "take" which is broadly defined as to harass, harm,
pursue, hunt, shoot, wound, kill, trap, capture, collect, or attempt to engage in any such
conduct. Take can also include habitat modification or degradation that directly results in
death or injury to a listed wildlife species. An activity can be defined as "take" even if it is
unintentional or accidental. Listed plant species are provided less protection than listed
wildlife species. Listed plant species are legally protected from take under FESA if they
occur on federal lands or if the project requires a federal action, such as a Section 404 fill
permit.
The U.S. Fish and Wildlife Service (USFWS) has jurisdiction over federally listed
threatened and endangered species under the FESA. The USFWS also maintains lists of
proposed and candidate species. Species on these lists are not legally protected under the
FESA, but may become listed in the near future and are often included in their review of a
project.
California Endangered Species Act. The California Endangered Species Act (CESA)
prohibits the take of any plant or animal listed or proposed for listing as rare (plants
only), threatened, or endangered. In accordance with the CESA, CDFG has jurisdiction
over state -listed species (California Fish and Game Code Sec. 2070). Additionally, the
CDFG maintains lists of "species of special concern" that are defined as species that
appear to be vulnerable to extinction because of declining populations, limited ranges,
and/or continuing threats.
California Environmental Quality Act. Section 15380(d) of the California Environmental
Quality Act (CEQA) Guidelines provides that a species not listed on the federal or state
lists of protected species may be considered rare or endangered if the species can be
shown to meet certain specified criteria. These criteria have been modeled after the
definitions in FESA and CESA and the section of the California Fish and Game Code
dealing with rare or endangered plants or animals. This section was included in the
guidelines primarily to deal with situations in which a public agency is reviewing a
project that may have a significant effect on a species that has not yet been listed by either
the USFWS or CDFG.
Clean Water Act. Under Section 404 of the Clean Water Act, the Corps is responsible for
regulating the discharge of fill material into waters of the United States. Waters of the
U.S. and their lateral limits are defined in 33 CFR Part 328.3 (a) and include streams that
are tributary to navigable waters and their adjacent wetlands. Wetlands that are not
adjacent to waters of the U.S. are termed "isolated wetlands" and, depending on the
circumstances, may not be subject to Corps jurisdiction.
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City of Dublin September 2012
California Water Quality and Waterbody Regulatory Programs. Pursuant to Section 401
of the federal Clean Water Act, projects that are regulated by the Corps must obtain water
quality certification from the RWQCB. This certification ensures that the Project will
uphold state water quality standards. The RWQCB may impose mitigation requirements
even if the Corps does not.
Isolated wetlands that are not jurisdictional under Section 404 of the federal Clean Water
Act are considered waters of the State under the Porter -Cologne Act. Discharge of fill
into waters of the State is subject to Waste Discharge Requirements as issued by the
RWQCB.
The CDFG exerts jurisdiction over the bed and banks of rivers, lakes, and streams
according to provisions of Section 1601 to 1603 of the Fish and Game Code. The Fish and
Game Code requires a Streambed Alteration Agreement for the fill or removal of material
within the bed and banks of a watercourse or waterbody and for the removal of riparian
vegetation.
The Federal Migratory Bird Treater (16 U.S.C. Sec. 703) prohibits killing, possessing, or
trading in migratory birds except in accordance with regulations prescribed by the
Secretary of the Interior. This act encompasses whole birds, parts of birds, and bird nests
and eggs. Most native bird species in the Project area are covered by this Act.
The California Native Plant Society (CNPS), a non -governmental conservation
organization, has developed lists of plant species of concern in California. Vascular plants
included on these lists are defined as follows:
List 1A Plants considered extinct.
List 113 Plants rare, threatened, or endangered in California and elsewhere.
List 2 Plants rare, threatened, or endangered in California but more common
elsewhere.
List 3 Plants about which more information is needed - review list.
List 4 Plants of limited distribution -watch list.
Although the CNPS is not a regulatory agency and plants on these lists have no formal
regulatory protection, plants appearing on List 1B or List 2 are, in general, considered to
meet CEQA's Section 15380 criteria and adverse effects to these species are considered
significant.
East Alameda County Conservation Strategy
The project site is located in Alameda County and is subject to the EACCS.
Conservation goals and objectives are described in Chapter 3 of the Final EACCS.
There are multiple objectives listed in the Conservation Strategy; here are some
objectives that apply directly to the Study Area:
Goal 1: Protect and enhance natural and semi- natural landscapes that are large enough to
accommodate natural processes beneficial to populations of native species.
Objective 1.1: Protect a range of environmental gradients (such as slope, elevation,
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City of Dublin September 2012
aspect) across a diversity of natural communities within the
conservation zones.
Objective 1.2: Protect riverine systems and hydrologic function within the study area
through protection and management of terrestrial land covers,
streams, ponds, and wetlands across all watersheds of the study area.
Goal 4: Protect and enhance fitnctional grassland communities (alkali meadow and scald,
California annual grassland, non -serpentine native bunchgrass grassland, serpentine
bunchgrass grassland, crock outcrop, valley sink scrub) that benefit, focal species and promote
native biodiversity.
Objective 4.1: Field verify the Conservation Strategy land cover map of native
grasslands and create a refined map that better accounts for mapped
stands.
Objective 4.2: Avoid or minimize direct impacts on grassland communities during
project construction and indirect impacts that result from post -project
activities by implementing avoidance measures outlined in Tables 3-2
and 3-3 of the EACCS.
Goal 8: Improve the overall quality of riparian communities and the hydrologic and geomorphic
processes that support them to increase the amount of riparian habitat for focal species and
promote native biodiversity.
Objective 8.1: Field verify the Conservation Strategy land cover map of riparian
forest and scrub stands and create a refined map that reflects species
composition, key riparian community attributes, and conservation
opportunities at the stream reach level.
Objective 8.2: Avoid or minimize direct impacts on riparian forest and scrub
communities during project construction and indirect impacts that
result from post -project activities by implementing avoidance
measures outlined in Table 3-2 and 3-3 of the EACCS.
Goal 9: Improve the overall quality of wetlands (perennial freshwater marsh, seasonal wetland,
alkali zoetland); ponds; and their upland watersheds to maintain functional aquatic communities
that benefit focal species and promote native biodiversity.
Objective 9.1: Field verify the Conservation Strategy land cover map of seasonal and
perennial wetlands and create a refined map that reflects habitat
quality and restoration opportunities.
Objective 9.2: Avoid or minimize direct impacts on wetland or pond communities
during project construction and indirect impacts that result from post -
project activities by implementing avoidance measures outlined in
Table 3-2 and 3-3 of the EACCS.
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City of Dublin September 2012
The Dublin Heritage Tree Ordinance (City of Dublin Municipal Code Sec. 5.60) states that
preservation of existing trees is beneficial to the health and welfare of the City. Tree
removal permits are required under this section for removal of heritage trees, which are
defined in the ordinance.
STANDARDS OF SIGNIFICANCE
The project's impacts to biological resources would be considered significant if the project
results in the actions or outcomes listed below. These significance criteria are based on the
CEQA Guidelines' (CCR Title 14, Div. 6, Ch. 3) recommended tools for determining the
potential for significant environmental effects, including the model Initial Study checklist
(Appendix G of the Guidelines) and mandatory findings of significance (Guidelines sec.
15065). The proposed project would have a significant supplemental impact on biological
resources if the following impacts have the potential to occur but were not analyzed in
the Eastern Dublin EIR or the 2007 SEIR, or are substantially more severe than analyzed
in the Eastern Dublin EIR or the 2007 SEIR:
• Substantially degrade the quality of the environment;
• Substantially reduce the habitat of a fish or wildlife species;
• Cause a fish or wildlife population to drop below self-sustaining levels;
• Threaten to eliminate a plant or animal community;
• Substantially reduce the number or restrict the range of an endangered, rare or
threatened species;
• Have a substantial adverse effect, either directly or indirectly or through habitat
modification, on any species identified as a candidate, sensitive, or special status
species in local or regional plans, policies, or regulations, or by the CDFG or
USFWS;
• Have a substantial adverse effect on any riparian habitat or other sensitive natural
community identified in local or regional plans, policies, regulations or by the
CDFG or USFWS;
• Have a substantial adverse effect on federally protected wetlands as defined by
Section 404 of the Clean Water Act (including, but not limited to, marsh, vernal
pool, coastal, etc.) through direct removal, filling, hydrological interruption or
other means;
• Interfere substantially with the movement of any native resident or migratory fish
or wildlife species or with established native resident or migratory wildlife
corridors, or impede the use of native wildlife nursery sites;
• Conflict with any local policies or ordinances protecting biological resources, such
as a tree preservation policy or ordinance;
• Conflict with the provisions of an adopted Habitat Conservation Plan, Natural
Community Conservation Plan, or other approved local, regional, or state habitat
conservation plan.
SUPPLEMENTAL IMPACTS AND MITIGATION MEASURES
The Project proposes the same type of development that was analyzed in the Eastern
Dublin EIR and the 2007 Casamira Valley EIR. This current DSEIR examines site -specific
resources for impacts beyond those identified in the Eastern Dublin EIR and the Casamira
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City of Dublin September 2012
Valley Supplement. The project now includes disturbance of slightly more area than was
analyzed in 2007. A portion of the project now includes a culvert replacement culvert
over Moller Creek that was not included in the 2007 SEIR. Furthermore, changes in
regulatory standards since 2007 necessitate additional analysis of potential supplemental
project impacts.
Supplemental impacts for Pacific pond turtle, white-tailed kite, northern harrier, golden
eagle, American badger and San Joaquin kit fox have not been identified, as these species
were analyzed and mitigated in the 1993 EIR. No additional mitigation is proposed for
these species.
Supplemental impacts have been identified for CTS, CRLF, burrowing owls, loggerhead
shrikes and California horned larks, as the legal status and/or mitigation requirements
for these species have changed since 2007.
The mitigation measures established in the Eastern Dublin EIR, the 2007 Supplemental
EIR and this document fulfill the City's obligations under CEQA with respect to
biological resources. However, the City recognizes that development activity on the
project site may require one or more permits from a variety of state and federal resources
agencies. Development project proponents on the project site will be responsible for
obtaining all such necessary permits. Those permits may impose mitigation requirements
that are different from and/or greater than the mitigation measures established in the
Eastern Dublin EIR, the 2007 SEIR and this document.
The following supplemental biological resources impacts and mitigation measures
concern impacts that are different from those identified in the Eastern Dublin EIR and/or
require supplemental analysis due to changes in regulatory conditions since 2007.
Note: supplemental impacts and mitigation measures identified for the 2012 project will
be designated with a "12" to differential from supplemental impacts and mitigation
measures included in the 2007 Casamira Valley EIR.
Direct and indirect impacts to annual grassland habitat and regionally common wildlife species
Supplemental Impact BIO-1-12 (direct and indirect impacts to annual grassland habitat
and regionally common wildlife species). Construction of the proposed project would
directly and indirectly impact approximately 165.14 acres of annual grassland habitat
for regionally common wildlife species that occurs on the Moller Ranch (significant
supplemental impact).
The area of grading and ground disturbance for the currently proposed Moller Ranch
property would be 165.14 acres, which would be approximately 19.73 acres greater than
analyzed in the 2007 Casamira Valley SEIR.
Implementation of all of the following supplemental measures will mitigate this
supplemental impact to a less -than -significant level by ensuring long-term habitat
preservation of annual grasslands.
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Supplemental Mitigation Measure SM-BIO-1a-12 (direct and indirect impacts to
annual grassland habitat and regionally common wildlife species). The project
applicant shall preserve grasslands at a ratio of 3:1 (preserve d:impacted) as mitigation
for the proposed development, for a total of 495.42 acres. In addition, to compensate
for the loss of 4.95 ac of regulated habitats (jurisdictional wetlands and riparian
woodlands) that function as dispersal and refuge habitat for tiger salamanders and
red -legged frogs, another 14.85 ac of grasslands shall be preserved in the conservation
lands for a total of 510.27 acres. As described above, the loss of these regulated
habitats could be mitigated for at off -site mitigation banks.
All lands proposed as mitigation must provide suitable habitat for focal species
impacted by the proposed project. The preservation of 510.27 ac of grasslands will
satisfy EACCS habitat mitigation requirements for impacts to focal species discussed
below. A conservation easement or similar mechanism shall be placed on the
mitigation lands to preserve the lands in perpetuity as a natural open space and
habitat for native plants and animals. An agreement establishing the conservation
easement or similar mechanism on the mitigation lands must be completed prior to
the initiation of construction activities.
Supplemental Mitigation Measure SM-BIO-1b-12 (direct and indirect impacts to
annual grassland habitat and regionally common wildlife species). The project
applicant shall establish an endowment in an amount to be determined by the
California Department of Fish & Game (CDFG) and United States Fish & Wildlife
Service (USFWS) for the long-term management, maintenance, and monitoring of the
mitigation lands placed in the conservation easement or similar mechanism. The
project applicant shall provide a guarantee of the endowment to the City prior to the
issuance of a grading permit.
Supplemental Mitigation Measure SM-BIO-1c-12 (direct and indirect impacts to
annual grassland habitat and regionally common wildlife species). The project
applicant shall prepare and implement a comprehensive habitat mitigation and
monitoring plan. The plan shall be reviewed and approved by the USFWS and
CDFG. The comprehensive plan shall be approved prior to issuance of a grading
permit. To comply with EACCS requirements and to mitigate for impacts described
below, the mitigation and monitoring plan shall incorporate detailed information on
the management, maintenance and monitoring of the following resources impacted
by the proposed project including:
a) Congdon's tarplant and San Joaquin spearscale (if present on Project site)
b) California tiger salamander dispersal and refugial habitat
c) California red -legged frog dispersal habitat
d) Burrowing owl habitat
e) San Joaquin kit fox habitat
f) Golden eagle foraging habitat
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Impacts to jurisdictional waters and woodland habitat
Supplemental Impact BIO-12-2 (impacts to jurisdictional waters and woodland
habitat). The current project footprint would impact 4.45 acres of jurisdictional habitats
(approximately 0.14 acres less than the 2007 SEIR project), including impacts to 3.51
acres of seep and seasonal wetland, 0.68 acres of ephemeral and intermittent drainage
and 0.26 acres of perennial drainage habitats. The current project footprint would also
impact 0.50 acres of riparian habitat, a habitat that was not analyzed in the 2007 SEIR
(significant supplemental impact).
Although the extent of the impact is relatively small to these regulated habitats (4.95 ac
in total), the loss of wetland and riparian habitat would result in a loss of breeding,
foraging, resting, rearing, and migration opportunities for numerous common and
special -status wildlife species. Further, these habitat types are regionally uncommon, in
part due to habitat loss and degradation. Thus, this impact is considered significant
because it would result in the permanent losses of ecologically valuable habitats,
including jurisdictional wetlands and other waters, and riparian woodland habitat.
Adherence to the following measure will reduce this impact to a less -than -significant
level.
Supplemental Mitigation Measure SM- BIO-2-12 (impacts to jurisdictional waters and
woodland habitat). The project applicant shall provide suitable compensatory,
replacement habitat for loss of jurisdictional waters and woodland habitat at a
minimum ratio of 1:1 for wetlands and 3:1 for riparian habitats. Replacement
mitigation land may occur in off -site mitigation banks that support appropriate
habitat, as approved by the City of Dublin and appropriate biological regulatory
agencies.
Water quality impacts on biological resources
Supplemental Impact BIO-3-12 (water quality impacts on biological resources). The
habitats that are directly associated with on -site creeks and drainage channels
represent sensitive natural communities that include aquatic habitat (both seasonal
and perennial) and an associated aquatic -upland transition zone. During construction
phases, sediment could enter aquatic habitats through gravity or in runoff, adversely
affecting water quality for fish and amphibians, including the California red -legged
frog, in downstream areas. Following project construction, increased runoff from the
addition of hardscape could result in increased erosion and water quality degradation
within these habitats in the project area. Degradation of water quality downstream
resulting from construction and residential development could impact aquatic wildlife
species (significant supplemental impact).
Implementation of the following erosion and sediment control measures will mitigate
water quality impacts on biological resources to a less than significant level.
Supplemental Mitigation Measure SM-BIO-3-12 (water quality impacts on biological
resources). The project applicant shall implement the following water quality features:
a) The Project's Stormwater Pollution Prevention Plan (SWPPP) shall include
specific and detailed BMPs designed to mitigate construction -related
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City of Dublin September 2012
pollutants. These controls shall include methods to minimize the contact of
construction materials, equipment, and maintenance supplies with stormwater
within the creek and drainages. Additional control measures identified in this
SWPPP will mitigate the release of construction -related pollutants from the site
during the various construction phases.
b) BMPs intended to reduce erosion of exposed soil in the bed and banks of the
creek and drainage channels in the Project site may include, but are not limited
to: soil stabilization controls, watering for dust control, perimeter silt fences,
placement of hay bales and sediment basins.
c) To the maximum extent practicable, all grading within the riparian and
jurisdictional habitats shall occur during the dry season. If grading is to occur
during the rainy season the primary BMPs selected will focus on erosion
control. End -of -pipe sediment control measures (e.g., basins and traps) will be
used only as secondary measures.
d) Work within the low -flow channel of the riparian habitats shall not occur when
there is flowing water within the channel. The creek or drainage channel shall
be dewatered and flows rerouted during construction for access. Work shall
only take place in areas within the native channel bed between April and
October.
Introduction of non-native plant species
Supplemental Impact BIO-12-4 (introduction of non-native weeds). Disturbance such
as grading, vehicle movement, and increased foot traffic that results from project
development could result in an increase of the spread of non-native, invasive weed
species. High densities of weeds could rapidly invade and colonize freshly disturbed
soils, increasing the area of cover that could ultimately impact the natural habitats
within the project area. In addition, it is possible that seeds of invasive species could
be inadvertently carried to the site by construction equipment or personnel. Invasion
by non-native weed species could degrade the functions and values of preserved
natural habitat, either on -site or in adjacent areas for native plants and wildlife
species (Significant supplemental impact).
Implementation of the following mitigation measures will reduce the spread of non-
native species to a level that is less than significant by removing major invasive weed
species on the project site, cleaning construction equipment to limit spread of invasive
species and other methods.
Supplemental Mitigation Measure SM-BIO-12-4a (introduction of non-native weeds).
To reduce the potential establishment or spread of non-native, invasive weed
populations as a result of Project activities, the following measures shall be
implemented. These measures shall be included in grading plans and specifications.
a) Concentrations of invasive species that could serve as seed sources shall be
removed prior to site grubbing or grading.
b) Staging areas shall be maintained free of weeds and weed seed for the duration
of their use during project construction.
c) All construction equipment shall be cleaned prior to deployment on the site by
removing all mud, dirt, and plant parts from all equipment, particularly
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City of Dublin September 2012
undercarriages and items that may have the potential to spread and deposit
weed seeds by having contact with vegetation or soil. Cleaning must occur away
from sensitive habitats.
d) All fill material sources shall be inspected to ensure that they are "weed free"
before use and transport. Fill material shall not be used if non-native, invasive
species are found growing on the material as this would indicate that seed from
these species is present within the material.
e) If straw is used for road stabilization and erosion control, it shall be certified by
a qualified biologist that it is weed -free or weed -seed free.
Supplemental Mitigation Measure SM-BIO-4b-12 (introduction of non-native
weeds). The project applicant shall develop and implement an Invasive Species
Management Plan to reduce the presence and spread of non-native, invasive plant
species on the site prior to grading any areas on the project site. This management
plan shall outline methods to remove the existing populations of non-native,
invasive weed species from the accessible portion of the site to prevent the spread of
their seed during and after construction and to prevent the invasion of graded area by
invasive species. This management plan shall contain details regarding the removal
and treatment of these species (herbicide application, manual removal, mowing, etc),
success criteria and a seeding plan to encourage native species to grow within
disturbed habitat. The plan shall be submitted to the City of Dublin Community
Development Department for approval, and the Department must approve the plan
prior to initiation of any ground -disturbing activities.
Supplemental Mitigation Measure SM-BIO-4c-12 (introduction of non-native weeds).
Landscape guidelines shall be established and implemented by the Homeowner's
Association to ensure that landscape plantings at the new residences or facilities shall
not include any plants that are listed on the California Invasive Plant Council Invasive
Plant Inventory's list of invasive plants and that are ranked in an inventory category as
having a moderate or high ecological impact on physical processes.
Impacts to special -status plants
Supplemental Impact BIO-12-5 (impacts to special -species plantsJ. Approximately,
305 plants San Joaquin spearscale plants were found in the 2003 rare plant surveys in
sparsely vegetated alkali wetlands, Updated floristic surveys are required to comply
with the EACCS and impacts will be assessed based on those surveys. Because
spearscale plants are CNPS List 1B species that occupy a relatively narrow habitat
niche, the loss individuals of these plants on the project site (depending on survey
results) represents a large enough proportion of its regional population such that the
loss is potentially significant impact (significant supplemental impact).
Supplemental mitigation measures contained in the 2007 SEIR, SM-BIO-2a, that requires
a salvage and recovery plan and SM-BIO-2b, that requires preservation of Congdon's
tarplant populations in mitigation lands with the establishment of an endowment,
remain valid and shall be complied with as required in the Mitigation Monitoring and
Reporting Program. The following supplemental mitigations shall also be followed to
ensure impacts to special -status species will be reduced to a less -than -significant level.
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City of Dublin September 2012
These additional measures require project construction to avoid disturbance of special -
status plants and preservation of special -status plant habitat areas.
Supplemental Mitigation Measure SM-BIO-5a (impacts to special -species plants).
Special -status plant species on the project site be avoided to the extent possible and
impacts be mitigated based on an assessment of how the project will affect the focal
plant population, with the assessment methodology requiring appropriate agency
approval.
Supplemental Mitigation Measure SM-BIO-5b (impacts to special -species plants).
Habitat for any Congdon's tarplant and San Joaquin spearscale on the project site
shall be preserved at a mitigation ratio of 5:1 per the EACCS mitigation
requirements. Mitigation could involve fee title purchase or conservation easement
and management of the site (per supplemental mitigation measures SM-BIO-12-2a, -
2b and -2c, above), with the focal plant population on the mitigation site being the
same or better in terms of size and vigor. Mitigation lands may include portions of
areas outside of project site, within the Moller Ranch and Brown Ranch and
potentially portions of the Brown Ranch, in Alameda and Contra Costa counties.
Impacts to California Tiger salamander
Supplemental Impact BIO-6-12 (impacts to California tiger salamander). The current
project footprint would impact approximately 170.09 acres of dispersal and refugial
California tiger salamander habitat, including annual grassland, jurisdictional
wetland, and riparian woodland habitats. This would be an increase from the
Casamira Valley SEIR by approximately 20.09 acres. No breeding habitat within the
current project footprint was identified in current biological surveys and thus no
mitigation for loss of breeding habitat is necessary (significant supplemental impact).
Supplemental Mitigation Measures SM-BIO-4c (requiring a relocation plan) and
SM-BIO-4d (requiring an exclusion fence) contained in the Casamira Valley SEIR
are proposed be replaced by the mitigation measures below. Because measures
SM-BIO-4e (requiring installation of a permanent fence surrounding
development), SM-BIO-4f (requiring a rodenticide ban on the site), and SM-BIO-
4g (requiring installation of roadway undercrossings for tiger salamanders) are
mitigation measures specific to the project site, these measures will be
implemented for the Moller Ranch project.
Supplemental Mitigation Measure SM-BIO-6-12 (impacts to California tiger
salamander). The project applicant shall adhere to the following requirements:
a) If aquatic habitat is present on a portion of the site, a qualified biologist shall
stake and flag an exclusion zone prior to activities. The exclusion zone shall be
fenced with orange construction zone and erosion control fencing (to be
installed by construction crew). The exclusion zone shall encompass the
maximum practicable distance from the work site and at least 500 feet from the
aquatic feature wet or dry.
b) A qualified biologist shall conduct preconstruction surveys prior to activities
define a time for the surveys (before ground breaking). If individual
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salamanders are found, work shall not begin until they are moved out of the
construction zone to a USFWS/CDFG approved relocation site.
c) A USFWS-approved biologist shall be present for initial ground disturbing
activities.
d) If the work site is within the typical dispersal distance (per USFWS/CDFG for
appropriate distances for species of interest) of potential breeding habitat,
barrier fencing shall be constructed around the worksite to prevent
amphibians from entering the work area. Barrier fencing may be removed
within 72 hours of completion of work.
e) Monofilament plastic shall not be used for erosion control, within areas
adjacent to undisturbed open space. Construction personnel shall inspect open
trenches in the morning and evening for trapped amphibians during
construction periods.
f) A qualified biologist possessing a valid ESA Section 10(a)(1)(A) permit or
Service approved under an active biological opinion, shall be contracted to
trap and to move amphibians to nearby suitable habitat if amphibians are
found inside fenced area.
g) Work shall be avoided within suitable habitat from October 15 (or the first
measurable fall rain of 1" or greater, to May 1.
Impacts to red -legged frog
Supplemental Impact BIO-7-12 (impacts to red -legged frog). Project implementation
could result in the direct loss of individual red -legged frogs as a result of trampling
by personnel or equipment, vehicle traffic, the collapse of underground burrows
(which may be used as refugia by red -legged frogs) resulting from soil compaction
due to heavy equipment use and the loss of aestivation and dispersal habitat. The
current project construction footprint would impact approximately 170.09 ac of red -
legged frog dispersal habitat on the site. This would be an increase of approximately
126.09 acres than was analyzed in the 2007 SEIR (significant supplemental impact).
In Supplemental Mitigation Measure SM-BIO-4a from the 2007 SEIR, the loss of
California red -legged frog upland habitat was mitigated at a 3:1 ratio replacement ratio.
Because both the project site and the proposed mitigation lands fall within California
red -legged frog critical habitat and within the EACCS California red -legged frog study
area, the mitigation ratio for impacts to these lands shall remain at a 3:1 ratio in
accordance with the EACCS. As described in 2007 SEIR Supplemental Mitigation
Measures SM-13I0-5c and SM-13I0-5d, all mitigation lands are to be protected via a
conservation easement or equivalent mechanism in and managed for this species, thus
satisfying EACCS requirements for management of conservation lands for focal species.
In Supplemental Mitigation Measure SM-13I0-5b, the 2007 SEIR required a mitigation
ratio of 2:1 for loss of California red -legged frog breeding habitat. This mitigation ratio
was based on a 1.5 ac impact to breeding habitat in Moller Creek, through degradation
related to surrounding development. However, due to the highly variable
geomorphology and flows of the Moller Creek Drainage, the project area does not
currently contain suitable red -legged frog breeding habitat, as the reach of the Moller
Drainage within the project site does not form drop pools or other ponded areas deep
enough or persistent enough to support breeding red -legged frogs. Also, there are no
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City of Dublin September 2012
seasonal or stock ponds present on the project site that will persist at sufficient depth
for sufficient time to support breeding red -legged frogs. Therefore, the project would
not result in the loss of California red -legged frog breeding habitat, thus SM-BIO-5b
should be removed as a requirement.
Because 2007 SEIR Supplemental Mitigation Measure SM-13I0-5f relates to design
features to facilitate amphibian movements (similar to SM-BIO-4g above), this project -
specific measure shall be applied to the current Moller Ranch project. In addition to
supplemental mitigation measures described above and the general mitigation
measures above, the mitigation measures related to habitat conservation and focal
amphibians from Table 3-3 of the EACCS shall be applied to the Moller Ranch project.
These mitigation measures are provided above for impacts to California tiger
salamanders (Supplemental Mitigation Measures SM-BIO-12-2a, 2b, 2c and SM-BIO-12-
SM-13I0-12-6).
Implementation of the measures described above will reduce impacts to California red -
legged frogs to less -than -significant levels.
Impacts to burrowing owl
Supplemental Impact BIO-8-12 (impacts to burrowing owl). The current Project
footprint would impact approximately 170.09 acres of upland burrowing owl habitat
on the project site. This would be an increase from the impact area to burrowing owls
identified in the 2007 SEIR by approximately 20.09 acres (significant supplemental
impact).
The California Department of Fish and Game has recently released the Staff Report on
Burrowing Owl Mitigation (CDFG 2012), which describes requirements for "take
avoidance surveys." These surveys must be initiated no less than 14 days prior to
construction activities, with the final survey completed 24 hours before construction,
using methodologies described in Appendix D of the staff report. Supplemental
Mitigation Measure SM-BIO-6b contained in the 2007 SEIR shall be updated to reflect
this revised survey requirement from the Department of Fish & Game. Adherence to
the following supplemental measure will reduce impacts to burrowing owl to a less -
than -significant level by requiring a pre -construction survey to identify nests near a
ground disturbance site. If nests are found, a non -activity zone shall be established
around the nest during the breeding season. Alternatively, a site -specific action plan
shall be developed by a qualified biologist to avoid significant impacts.
Supplemental Mitigation Measure SM-BIO-8-12 (impacts to burrowing owl). The
applicant shall complete the following actions with respect to burrowing owl.
a) If an active nest is identified within 250 foot distance of a burrowing owl nest
or a distance determined by a qualified biologists in coordination with
CDFG, a proposed work area work shall be conducted outside of the nesting
season (15 March to 1 September) if feasible.
b) If an active nest is identified near a proposed work area and work cannot be
conducted outside of the nesting season, a no -activity zone will be
established by a qualified biologist. The no -activity zone shall be large
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enough to avoid nest abandonment and will at a minimum be a 250-feet
radius from the nest.
c) If burrowing owls are present at the site during the non -breeding period, a
qualified biologist shall establish a no -activity zone of at least 150 feet, if
feasible.
d) If an effective no activity zone cannot be established around an occupied
burrow, an experienced burrowing owl biologist shall develop a site -specific
plan (i.e., a plan that considers the type and extent of the proposed activity,
the duration and timing of the activity, the sensitivity and habituation of the
owls and the dissimilarity of the proposed activity with background
activities) to minimize the potential to affect the reproductive success of the
owls.
f) A Burrowing Owl Exclusion Plan shall be prepared if occupied burrows
cannot be avoided during the breeding season.
Impacts to San Joaquin kit fox and American badger
WRA surveyed the Project site for San Joaquin kit fox in February 2003 and none were
found on site during the survey effort and no evidence of kit fox occupancy was found
during extensive surveys for kit fox on lands immediately east and west of the Project
site. The most recent CNDDB record for kit foxes in the project vicinity, dating from
1989, is located 4.5 mi to the northwest of the project site, just east of the intersection of
Dougherty Road and Crow Canyon Road in an area now surrounded by dense
residential development. The lack of recent records in the vicinity indicates that the
species is absent from the project area and thus no impacts to this species are expected
to occur due to development of this project.
However, the EACCS considers the project site to be within core habitat for San
Joaquin kit fox (EACCS Figure D-17), and as a result have incorporated mitigation
measures to reduce this impact to less than significant levels. According to the EACCS
model for kit fox core habitat, all grassland cover types and all oak woodlands within
500 ft. of grasslands, were considered suitable foraging and denning habitat for this
species. Therefore, the loss of 165.14 ac of grasslands on the site will be mitigated for at
a 3:1 ratio. Supplemental Mitigation Measures SM-13I0-12-1, -2 and -3, described above,
will fulfill the EACCS mitigation requirements for this species. In addition, the
following Supplemental Mitigation Measure, which includes avoidance and mitigation
measures for San Joaquin kit fox (and American badger) will be implemented and will
mitigate impacts to San Joaquin kit fox to less -than -significant levels according to the
EACCS.
The 2007 SEIR did not include supplemental measures specific to American badgers.
Badgers have not been documented on the Project site but are known to occur in the
Project vicinity, and badgers may den and forage in grassland habitat within the
Project site. In addition, badgers may use the Project site during dispersal. However,
due to their large home range size, only one badger or a female with pups is expected
to occur within the site at a given time. Project
Supplemental Impact BIO-9-12 (impacts to San Joaquin kit fox and American
badger). The proposed Project would result in loss of 165.14 ac of grasslands on the
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 123
City of Dublin September 2012
site that would impact habitat for San Joaquin kit fox. Project construction could also
potentially result in the destruction of an active American badger den, which could
result in the take of up to one badger and/or its pups. If badgers have to be evicted
from their dens, there is some potential that they will be exposed to greater predation
risk or greater road mortality (significant supplemental impact).
Adherence to the following measure will reduce any potential impacts to San Joaquin kit
fox and American badger to a less -than -significant level by requiring pre -construction
surveys to check for possible presence of these species and to avoid disturbance of active
dens. If avoidance is not possible, an alternative plans shall be developed by a qualified
biologist to avoid any significant impacts to these species, as approved by appropriate
biological regulatory agencies.
Supplemental Mitigation Measure SM-BIO-9-12 (impacts to San Joaquin kit fox and
American badger). The project applicant shall:
a) Undertake preconstruction surveys on the project site by a USFWS/CDFG-
approved biologist prior to grading or ground disturbance.
b) Avoid disturbance and destruction of potential dens to the extent practicable.
c) If disturbance of dens is unavoidable, a qualified biologist shall determine if
the dens are occupied using methodology developed in coordination with the
USFWS and/or CDFG. If the dens are determined to be unoccupied, they shall
be collapsed by hand in accordance with USFWS procedures.
d) Exclusion zones around occupied dens will be established by a qualified
biologist following USFWS procedures following current standards (potential
den — 50 ft; known den —100 ft; natal den — determined on a case -by -case basis
in consultation with the USFWS and CDFG).
e) Pipes will be capped and trenches equipped with exit ramps to prevent
animals from becoming trapped.
f) Loss of suitable kit fox habitat on the Project site will be mitigated for at a 3:1
ratio.
g) If an active badger den is discovered on the Project site and cannot be avoided
using the measures described above, mitigation for loss of the burrow(s) will
be provided at a 3:1 ratio, and mitigation lands will be protected in perpetuity.
impacts to Golden eagle
The entire project site constitutes suitable foraging habitat for golden eagles and they
have been observed foraging on the site. Although foraging habitat is relatively
abundant in the region for golden eagles, the loss of foraging habitat in an eagle
territory could potentially reduce foraging opportunities and reduce breeding success
of an eagle pair. While no golden eagles are currently nesting on the site, golden eagles
have nested in eucalyptus trees in the Northern Drainage Conservation Area,
approximately 0.5 mi southeast of the site and there is some potential that eagles could
nest in the eucalyptus trees on the site as well. The eagle nest in Northern Drainage
Conservation Area is isolated from the project site by intervening topography, thus
human disturbance is not expected to affect this nest. However if a golden eagle
establishes a nest on the site, noise and disturbance related to project implementation
........._
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 124
City of Dublin September 2012
may cause the eagle to abandon its nest and/or territory. Due to their relative rarity in
the region, the loss of a golden eagle nest would be considered significant under CEQA.
The EACCS requires mitigation for loss of golden eagle foraging habitat within 0.5 mi of
a nest site in the Livermore Valley Mitigation Area at a ratio of 3:1. Currently, there is
an active golden eagle nest in the Northern Drainage Conservation Area, just barely
within 0.5 mi to the southeast, and 3.76 ac of potential foraging habitat on the Project
site occurs within a 0.5-mi radius of the nest. Therefore, 11.28 ac of golden eagle
foraging habitat must be mitigated at a 3:1 ratio to comply with the EACCS. This
mitigation area overlaps with the annual grassland preserved for other impacts.
Supplemental Mitigation Measures SM-BIO-12-1, -2 and -3, will satisfy these mitigation
requirements.
Supplemental Impact BIO-10-12 (impacts to Golden eagle). Proposed project
construction could impact existing foraging habitat for Golden eagles (significant
supplemental impact).
Adherence to the following supplemental mitigation measure will reduce impacts to
Golden eagle to a less -than -significant level by restricting construction work to outside of
the breeding season. Alternatively, a no -activity zone shall be established around active
nests. A second alternative would include development of a site -specific action plan by a
qualified biologist to reduce impacts to Golden eagles to a less -than -significant level.
Supplemental Mitigation Measure SM-BIO-10-12 (impacts to Golden eagle). The
following steps shall be undertaken if a Golden eagle nets is discovered on the site:
a) If an active nest is identified near (i.e., within 1000 ft. or as determined by a
qualified biologist in consultation with the CDFG) a proposed work area,
work shall be conducted outside of the nesting season (February 1 to
September 1).
b) If an active nest is identified near a proposed work area and work cannot be
conducted outside of the nesting season, a no -activity zone shall be
established by a qualified biologist. The no -activity zone shall be large
enough to avoid nest abandonment and will at a minimum be 250-feet radius
from the nest.
c) If an effective no -activity zone cannot be established in either case, an
experienced golden eagle biologist shall develop a site -specific plan (i.e., a
plan that considers the type and extent of the proposed activity, the duration
and timing of the activity, the sensitivity and habituation of the eagles, and the
dissimilarity of the proposed activity with background activities) to minimize
the potential to affect the reproductive success of the eagles.
The following supplemental impacts and mitigation measures are applicable to the
Moller Creek culvert replacement portion of the project.
Impacts to non-native annual grassland
Supplemental Impact BIO-11-12 (Moller Creek culvert impacts to non-native
grasslands). Construction of the proposed culvert replacement would impact
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 125
City of Dublin September 2012
approximately 0.5 acre of non-native annual grassland adjacent to the culvert
replacement site (significant supplemental impact).
The following supplemental mitigation will reduce this impact to a less -than -significant
level by requiring provision of compensatory non-native grasslands off of the site.
Supplemental Mitigation Measure SM-BIO-11-12 (Moller Creek culvert impacts to
non-native grasslands). The project applicant shall provide sufficient compensatory
grassland habitat for loss of approximately 0.5 acres of impacted grassland habitat. The
amount of replacement habitat is estimated to be approximately 2.5 acres, but the final
amount of compensatory grassland shall be determined through discussions with
appropriate biological regulatory agencies.
Impacts to mixed riparian forest
Supplemental Impact BIO-12-12 (Moller Creek culvert impacts to mixed riparian
forest . Construction of the proposed culvert replacement would impact
approximately one acre of mixed riparian forest (significant supplemental impact).
The following supplemental mitigation will reduce this impact to a less -than -significant
level by requiring avoidance of mixed riparian habitat areas near the project site. If
avoidance is not feasible, suitable alternative habitat shall be purchased.
Supplemental Mitigation Measure SM-BIO-12-12 (Moller Creek culvert impacts to
mixed riparian forest). The project applicant shall avoid construction activities that
would impact mixed riparian forest. If avoidance is not possible, the applicant shall
purchase of compensatory habitat or purchase appropriate mitigation bank credits. The
mitigation ratio for acreage is 3:1.
Impacts to wetlands and other waters
Supplemental Impact BIO-13-12 (Moller Creek culvert impacts to wetlands and other
waters). Construction of the proposed culvert replacement would impact an estimated
0.006 acre of seasonal wetlands and approximately 0.09 acre of waters. Also, the
proposed project would fill jurisdictional features and create a new creek alignment
(significant supplemental impact).
The following supplemental mitigation will reduce this impact to a less -than -significant
level by requiring avoidance of mixed riparian habitat areas near the project site.
Supplemental Mitigation Measure SM-BIO-13-12 (Moller Creek culvert impacts to
wetlands and other waters). The project applicant shall provide suitable compensatory,
replacement habitat for loss of jurisdictional wetlands and waters at a minimum ratio
of 3:1 for a total of 0.018 acre of seasonal wetland and 0.27 acre of waters. Replacement
mitigation land may occur in off -site mitigation banks that support appropriate
habitat, as approved by the City of Dublin and appropriate biological regulatory
agencies. Prior to the issuance of a grading permit, the applicant shall obtain a Section
401 Water Quality Certification from the RWQCB, a Section 404 permit from the Corps,
and a Streambed Alteration Agreement from CDFG. The applicant shall adhere to all
conditions of approval listed in the permits obtained from the regulatory agencies.
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 126
City of Dublin September 2012
Impacts to special -status plants
�r Creek culvert impacts to special -status
plants). Construction of the proposed culvert replacement could impact twelve
special -status plant species known to occur in the project area. These include:
heartscale, lesser saltscale, brittlescale, San Joaquin spearscale, round -leaved filaree,
Congdon's tarplant, hispid salty bird's beak, palmate salty bird's beak, Livermore
tarplant, western leatherwood, diamond -petaled California poppy, and Diablo
helianthella (significant supplemental impact).
The following supplemental mitigation will reduce this impact to a less -than -significant
level by requiring avoidance of special -status plants to the extent feasible near the
project site. If avoidance is not feasible, a suitable compensatory mitigation area shall be
required.
Supplemental Mitigation Measure SM-BIO-14a-12 (Moller Creek culvert impacts to
special -status plants). The project applicant shall a focused rare plant survey during
the blooming period for these species (March). An additional survey in August is
necessary to determine the presence or absence of the other species. The
methodology for the rare plant survey will vary by species and site -specific
conditions. Impact assessment methodologies shall be approved in advance by
USFWS (federally listed species) and CDFG. The floristic survey of the site must
have been completed within the preceding 3 years prior to construction (under
normal rainfall conditions) and spatially explicit data on the extent of the focal plant
population must be available.
Supplemental Mitigation Measure SM-BIO-14b-12 (Moller Creek culvert impacts to
special -status plants). The project applicant shall implement avoidance measures
outlined below to avoid any impacts and should mitigate any loss of habitat. To
mitigate impacts on a plant population that cannot be avoided, a parcel where the
specific plant species occurs shall be acquired through fee title purchase or
conservation easement. The mitigation plan shall be equivalent to or better in terms
of population size and vigor than the plant population affected at the project site.
Enhancement plans for public and private lands that provide suitable habitat for
focal plant species shall be developed to enhance suitable habitat and contribute to
meeting the conservation objectives. Specific measures for affected plant species in
management plans promote livestock grazing in grassland and scrub habitat, conduct
prescribed burns, conduct mowing, and identify locations in or near the project site
where shrub- or tree -dominated plant communities are encroaching on grassland
communities (alkali meadow and scald, California annual grassland, and non -
serpentine bunchgrass grassland).
Impacts to nesting birds and bats
Supplemental Impact BIO-15-12 (Moller Creek culvert impacts to tree nesting birds
and bats). Construction of the proposed culvert replacement could impact bird
species that may use the project site for breeding and foraging. Golden eagles may
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 127
City of Dublin September 2012
use existing eucalyptus trees adjacent to the site for nesting. Roosting bats are also
likely to occur in or adjacent to the project site (significant supplemental impact).
The following supplemental mitigation will reduce this impact to a less -than -significant
level by requiring avoidance of tree removal that contain nesting birds and bats during
the nesting season to the extent feasible near the project site. If avoidance is not feasible,
a additional mitigation shall be required.
Supplemental Mitigation Measure SM-BIO-15-12 (Moller Creek culvert impacts to
tree nesting birds and bats). The project applicant shall undertake the following:
a) If the proposed project were to remove trees during the nesting bird season
(February 1— August 31) then pre -construction breeding bird surveys should
be conducted within 10-14 days of ground disturbance to avoid disturbance to
active nests, eggs, and/or young of ground -nesting birds.
b) Any trees and shrubs in or adjacent to the project area that are proposed for
removal and that could be used as nesting sites by loggerhead shrike and
white-tailed kite may only be removed during the non -breeding season
(September through February).
0 Prior to removal of any on -site trees, a qualified bat biologist shall perform a
survey to identify any roosting bats present. If a maternity roost is found, tree
removal shall be postponed until the young become independent and the
mothers vacate the roost.
Adherence to Supplemental Mitigation Measure SM-BIO-12-10 will reduce impacts to
Golden eagle to a less -than -significant level.
Impacts to red -legged frog
Supplemental Impact BIO-16-12 (Moller Creek culvert impacts to red -legged frog). A
majority of the project site provides suitable dispersal and upland habitat for red -
legged frog. Construction of the proposed culvert replacement could reduce this
dispersal habitat (significant supplemental impact).
Adherence to the following measure will reduce the above impact to a less -than -
significant level by providing suitable alternative habitat for red -legged frog.
Supplemental Mitigation Measure BIO-16-12 (Moller Creek culvert impacts to red -
legged frog). The project applicant shall mitigate the loss of suitable red -legged frog
habitat by protecting and enhancing occupied habitat through the purchase of
similar suitable habitat or through the purchase of mitigation bank credits. The
mitigation ratio for acreage is 3:1. The purchase of mitigation land outside of
California Red Legged Frog Mitigation Area CZ3 requires site -specific agency
approval. Additionally, in order to meet CDFG's standard of full mitigation for state -
listed species under the California Endangered Species Act, the project applicant
shall demonstrate habitat enhancement, not just permanent protection, on properties
used for mitigation.
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 128
City of Dublin September 2012
Adherence to Supplemental Mitigation Measure SM-BIO-6-12 will also assist in
reducing impacts to red -legged frog to a less -than -significant level.
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 129
City of Dublin September 2012
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Table 4.6-2. Special -Status Animal Species Potentially Occurring On or In the
Vicinity of the Moller Ranch Project Area
Status
(Federal/ Potential for Occurrence
Species State) Habitat within Proiect Areas
Amphibians
Western spadefoot -/ CSC Found in open habitats, Not likely to occur, closest
Spea hammondii grasslands, savannah, and open records from the Corral Hollow
woodlands. Area east of Dublin. No
spadefoots observed during
surveys of aquatic habitats on -
site.
California tiger
salamander
Antbystotna californiense
California red -legged
frog
Rana attrora draytonii
Pacific pond turtle
Actinentys ntarntoratn
Coast horned lizard
Phrynosoma coronatum
ftontale
-/CSC Breeds in vernal pools, ponds,
and stock ponds. Spends
summer and early Fall in
uplands surrounding breeding
sites, taking refuge in small
mammal burrows or other
underground cover.
FT/ CSC Found in lowlands and foothills
in or near permanent ponds and
streams with dense, shrubby, or
emergent riparian vegetation.
—/CSC ( Found in ponds, marshes,
rivers, streams, and irrigation
ditches with aquatic vegetation.
Requires basking sites and
adjacent grasslands or other
o en habitat for egg -laying.
-/ CSC Found in open sunny habitats
including grasslands, scrub,
and open woodlands that
support native ant populations.
Suitable breeding and
terrestrial habitat for this
species occurs on -site. Larvae
observed by WRA in the
southeast stock pond off -site
and in off -site stock pond north
of site. Adults observed by
WRA in burrows in middle
main stem of Moller Creek and
near the southeast stock pond
in the winter of 2002/2003.
Observed north of the site by
Opus Environmental in July
2005 along the northern end of
Moller Road during
construction monitoring for the
PG&E Tri-Valley 2002 Capacity
Increase Project.
Observed by WRA and LSA in
the main stein of Moller Creek.
Suitable breeding habitat occurs
in Moller Creek onsite and the
southeast stock pond off -site.
Suitable habitat is present in
Moller Creek and the southeast
stock pond on -site. Known
occurrences within one mile of
site in Tassajara Creek.
Not expected to occur on -site
due to general lack of cover and
habitat disturbance from
grazing. Closest known
occurrences are over 11 miles
from site on Mines Road and in
Mt. Diablo State Park.
San Joaquin coachwhip -/ CSC Found in open grasslands and Suitable habitat occurs onsite.
Masticophis flagelhun alkali flats with abundant Closest known occurrences are
ruddocki rodent burrows for cover. more than eight miles from site.
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 135
City of Dublin September 2012
Status
(Federal/
Potential for Occurrence
Species
State)
Habitat
within Project Areas
Alameda whipsnake
FT/ CT
Found in chaparral and rock
No suitable habitat present on-
Masticophis lateralis
outcrops.
site. This species would not
eurl xanthusi
occur on -site.
Birds
White-tailed kite
—/CFP
Nests in shrubs and trees in
Trees on and surrounding site
Elanus leucurus
open areas and forages in
provide nesting habitat and
adjacent grasslands and
grasslands are suitable foraging
agricultural land.
habitat. Known nesting
occurrence within one mile
from site east of Tassajara Road.
No kites observed during
surveys, but likely to occur.
Northern harrier
—/ CSC
Nests and forages in meadows,
Grasslands on site provide
Circus cyaneus
grasslands, open rangeland,
suitable nesting and foraging
and fresh or saltwater marshes.
habitat. One adult observed by
LSA in the vicinity of the
project site, north of the
southeast stock pond.
Cooper's hawk
—/ CSC
Nests and forages in
No suitable nesting habitat on-
Accipiter cooperii
woodlands, often with open
site. May occasionally forage
areas or open canopy and near
on -site.
water. Also known to forage in
o en rasslands or shrubland.
Swainson=s hawk
—/ CT
Found in open country and
May occur occasionally on -site
Buteo swainsoni
ranch lands, with scattered trees
during migration. Nests east of
for nesting.
Dublin in the Central Valley.
Ferruginous hawk
—/ CSC
Forages in open country and
May occur as a winter visitor.
Buteo regalis
(wintering
ranch lands. Occurs in
Not a breeding bird in this
California only as a winter
region.
visitor.
Golden eagle
—/ CSC
Forages in rolling foothill or
Site provides foraging habitat
Aquila chrysaetos
coast -range terrain, with open
for this species. Observed
grassland and scattered large
along north boundary during
trees. Nests in large trees, on
WRA site assessment in
cliffs, and occasionally on
November 2002.
ower line oles.
Merlin
—/ CSC
Forages in open country, sea
May occur as a migrant or
Falco columbarius
(wintering
coasts, and bay lands. Occurs
winter visitor. Not a breeding
in California only as a winter
bird in this region.
visitor and migrant.
American peregrine
Delisted /
Forages in open country,
Foraging habitat on -site,
falcon
CE
mountains, and sea coasts.
however, no suitable nesting
Falco peregrinus anattun
(nesting)
Nests on high cliffs, bridges,
habitat. None observed on -site.
and buildings.
Prairie falcon
—/ CSC
Forages in open country and
May forage on -site. No suitable
Falco mexicanus
(nesting)
deserts. Nests on cliffs.
nesting habitat occurs.
Long -billed curlew
-/ CSC
Forages and nests in marshes,
May forage on grassland within
Numenius americanus
agricultural fields, and
site during the winter, but does
grasslands
not breed in the re ion.
Burrowing owl
—/ CSC
Nests in burrows in grasslands
Likely forages and nests in the
Athene cunicularia
and woodlands; often
grasslands on -site. Observed
associated with ground
north of the site b O us
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 136
City of Dublin September 2012
California horned lark
Erenzophila alpestris actia
Loggerhead shrike
Lanins ludovicianus
Tricolored blackbird
Agelaius tricolor
Mammals
Townsend=s western
big -eared bat
Corynorhinus townsendii
townsendii
Yuma myotis
Myotis yunianensis
Pallid bat
Antrozous pallidus
American badger
Taxidea taxes
San Joaquin kit fox
Vulpes macrotis nzutica
Status Codes:
Status
(Federal/
State)
—/ CSC
—/ CSC
—/ CSC
—/ CSC
—/ CSC
—/ CSC
—/CSC
FT/CE
Habitat
squirrels. Will also nest in
artificial structures (culverts,
concrete debris piles, etc.)
Forages and nests in open
grasslands and barren fields.
Found in grasslands and open
shrub or woodland
communities. Nests in dense
shrubs or trees and forages in
scrub, open woodlands,
grasslands, and croplands.
Frequently uses fences, posts,
and utility lines as hunting
Nests in dense vegetation near
open water, forages in
grasslands and agricultural
fields.
Found in wooded areas with
caves or old buildings for roost
sites.
Occupies a wide variety of
habitats at low elevations.
Roosts in buildings, tree, caves,
bridges, and rock crevices.
Occupies a wide variety of
habitats at low elevations. Most
commonly found in open, dry
habitats with rocky areas for
Grassland, scrub, and
woodland with loose -textured
soils.
Found in open grasslands and
arid areas with ground squirrel
and/or kangaroo rat
populations. Dens in rodent
burrows.
FE = Federally -listed as an endangered species.
Potential for Occurrence
within Project Area'
Environmental in August 2005
during construction monitoring
for the PG&E Tri-Valley 2002
Capacity Increase Project.
May nest and forage in the
grasslands on -site. Known to
occur on -site. Suitable breeding
habitat present.
Observed on -site by WRA
during the site assessment in
November 2002 and by LSA in
August 2005. May nest in the
trees on -site.
May forage on -site. No suitable
nesting habitat present.
May forage within the site.
Suitable roosting or hibernating
habitat present in old ranch
buildings on -site. Roosting
habitat may also occur in old
ranch buildings adjacent to the
site.
May forage within the site.
Roosting habitat may occur in
tree cavities and buildings on -
site.
May forage on -site. Roosting
habitat may occur in old ranch
buildings on and adjacent to
site.
Suitable habitat for this species
is present on -site. Badgers are
likely to occur on -site
occasionally. Known
occurrences within one mile of
site along Tassajara Road.
Foraging and denning habitat
occur on -site. This species has
been recorded within the
vicinity and may use the site
during foraging and local
movements.
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 137
City of Dublin September 2012
FT = Federally -listed as a threatened species.
CE = State -listed as an endangered species.
CT = State- listed as a threatened species.
CFP = State -listed as a fully protected.
CSC = State Species of Special Concern.
a Nearest records are based on CNDDB (2005) occurrences unless otherwise noted.
Source: LSA Associates Inc
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 138
City of Dublin September 2012
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CITY OF DUBLIN
MOLLER RANCH PROJECT
DRAFT SUPPLEMENTAL EIR
Exhibit 4.2.4
VEGETATION COMMUNITIES:
MOLLER CREEK CULVERT REPLACEMENT AREA
� J
4.3 AIR QUALITY
INTRODUCTION
Air quality impacts of the project were analyzed in Chapter 3.11 of the Eastern Dublin
EIR and Chapter 4.8 of the 2007 Casamira SEIR. This chapter examines compliance with
applicable significance thresholds, utilizes updated methods of analysis and is based on
current traffic forecasts that reflect changes inrgw proposed project and regional travel
patterns that have occurred since certification of the earlier two EIRs. This supplement
also examines changes in the regulatory standards since the certification of the Casamira
Valley SEIR. This section of the DSEIR is based on an air quality analysis for this project
prepared by Illingworth and Rodkin. Appendix 8.9 includes the technical information to
support this section.
ENVIRONMENTAL SETTING
Overview. The project is located in the San Francisco Bay Area Air Basin. Ambient air
quality standards have been established at both the State and Federal level. The Bay
Area meets all ambient air quality standards with the exception of ground -level ozone,
respirable particulate matter (PM,o) and fine particulate matter (PM,,,).
High ozone levels are caused by the cumulative emissions of reactive organic gases
(ROG) and nitrogen oxides (NOx). These precursor pollutants react under certain
meteorological conditions to form high ozone levels. Controlling the emissions of these
precursor pollutants is the focus of the Bay Area's attempts to reduce ozone levels.
Highest ozone levels in the Bay Area occur in the eastern and southern inland valleys
that are downwind of air pollutant sources. High ozone levels aggravate respiratory
and cardiovascular diseases, reduced lung function, and increase coughing and chest
discomfort.
Particulate matter is another problematic air pollutant in the Bay Area. Particulate
matter is assessed and measured in terms of respirable particulate matter or particles
that have a diameter of 10 micrometers or less (PM,o) and fine particulate matter where
particles have a diameter of 2.5 micrometers or less (PM2.5). Elevated concentrations of
PM,o and PM2 5 are the result of both region -wide (or cumulative) emissions and
localized emissions. High particulate matter levels aggravate respiratory and
cardiovascular diseases, reduce lung function, increase mortality (e.g., lung cancer), and
result in reduced lung function growth in children.
The ambient air quality in a given area depends on the quantities of pollutants emitted
within the area, transport of pollutants to and from surrounding areas, local and
regional meteorological conditions, as well as the surrounding topography of the air
basin. Air quality is described by the concentration of various pollutants in the
atmosphere. Units of concentration are generally expressed in parts per million (ppm)
or micrograms per cubic meter (µg/m3). Dublin in located in the Tri- Valley Area,
where wind speeds rank as some of the lowest in the Bay Area. Air temperatures are
cooler in the winter and warmer in the summer because these valleys are further from
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 143
City of Dublin September 2012
the moderating effect of large water bodies, and because the Coast Range blocks marine
air flow. During the summer, average daily maximum temperatures are in the high 80's
to 90 degrees. Average minimum temperatures in winter are in the low to mid
40's.Temperatures in the Tri-Valley would be similar to Concord's. Shielded by the
Coast Range to the west, rainfall amounts are relatively low. For example, Martinez in
the north reports an annual average of 18.5 inches, while Walnut Creek reports 19
inches. Rainfall in the Dublin area is expected to be similar because of the similar
orientation of the terrain.
Pollution potential is relatively high in these valleys. In the winter, light winds at night,
coupled with a surface -based inversion, and terrain blocking to the east and west does
not allow much dispersion of pollutants. Tri-Valley with its very narrow width, could
easily have high pollution buildups from emissions contributed by the major freeway in
its center, and by emissions from fireplaces and wood stoves. In the summer months,
ozone can be transported into the valleys from both the Central Valley and the central
Bay Area.
National and State Ambient Air Quality Standards. The ambient air quality in a
given area depends on the quantities of pollutants emitted within the area,
transport of pollutants to and from surrounding areas, local and regional
meteorological conditions, as well as the surrounding topography of the air
basin. Air quality is described by the concentration of various pollutants in the
atmosphere. Units of concentration are generally expressed in parts per million
(ppm) or micrograms per cubic meter (µg/m3).
As required by the Federal Clean Air Act, National Ambient Air Quality Standards
(NAAQS) have been established for six major air pollutants: carbon monoxide (CO),
nitrogen dioxide (NO,), ozone (03), particulate matter, including respirable particulate
matter (PM,()) and fine particulate matter (PM2.5), sulfur oxides, and lead. Pursuant to
the California Clean Air Act, the State of California has established the California
Ambient Air Quality Standards (CAAQS). Relevant State and Federal standards are
summarized in Table 4.3-1, some of which have been updated since the 2007 Casamira
Valley SEIR (for example, the federal 8-hour ozone standard is now 0.075 ppm).
CAAQS are generally the same or more stringent than NAAQS.
Air Quality Monitoring Data. The significance of a pollutant concentration is
determined by comparing the concentration to an appropriate ambient air quality
standard. The standards represent the allowable pollutant concentrations designed to
ensure that the public health and welfare are protected, while including a reasonable
margin of safety to protect the more sensitive individuals in the population. The San
Francisco Bay Area is considered to be one of the cleanest metropolitan areas in the
country with respect to air quality. BAAQMD monitors air quality conditions at more
than 30 locations throughout the Bay Area. The closest monitoring station to the project
site is in Livermore at the 793 Rincon Avenue monitoring station. Summarized air
pollutant data for this station is provided in Table 4.3-2. This table shows the highest air
pollutant concentrations measured at the station over the five-year period from 2007
through 2011.
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 144
City of Dublin September 2012
Table 4.3-1. Relevant California and National
Ambient Air Quality Standards
Pollutant
Averaging
California
National
Time
Standards
Standards
Ozone
8-hour
0.070 ppm
(137 µg / m3)
0.075 ppm
(1474g / m3)
1-hour
0.09 ppm
(180 µg/m3)
—
Carbon
1-hour
20 ppm
(23 mg/m3)
35 ppm
(40 mg/m3)
monoxide
8-hour
9.0 pprn
(10 mg/m3)
9 ppm
(10 mg/m3)
Nitrogen
1-hour
0.18 ppm
(339 µg/m3)
0.100 ppm
(188 µ /m3)
Annual
0.030 ppm
(57 µ / m3)
0.053 ppm
(100 µ / m3)
dioxide
Sulfur Dioxide
1-hour
0.25 ppm
(655 µg / m3)
0.075 ppm
(196 µg / m3)
24-hour
0.04 ppm
(105 µg/m3)
0.14 ppm
(365 µg/m3)
Annual
—
0.03 ppm
(56 µ / m3)
Particulate
Annual
20 µg / m3
—
Matter (PMio)
24-hour
50 µg/m3
150 µg/m3
Particulate
Annual
12 µg / m3
15 µg / m3
Matter (PM2.5)
24-hour
—
35 µ / m3
Notes: ppm = parts per million mg/m3 = milligrams per cubic meter /Jg/m- = micrograms
per cubic meter
Source: Illingworth & Rodkin, 2012
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 145
City of Dublin September 2012
Table 4.3-2. Highest Measured Air Pollutant
Concentrations in Livermore
Pollutant
Average
Time
2007
2008
2009
2010
2011
Ozone (03)
1-Hour
0.120
0.141
0.113
0.150
0.115
8-Hour
0.091
0.111
0.086 ppm
0.098
0.085
Carbon Monoxide (CO)
8-Hour
1.8 ppm
1.4 ppm
1.3 ppm
ND
ND
Nitrogen Dioxide (NO2)
1-Hour
0.052
0.058
0.052
0.058
0.057
Annual
0.013
0.013
0.012
0.011
0.011
Respirable Particulate
Matter (PM10)
24-Hour
74.8 s
46.8 3
ND
ND
ND
Annual
19.8
s
ND
ND
ND
ND
Fine Particulate Matter
(PM2.5)
24-Hour
54.9
3
52.7
3
45.7
3
34.7
3
23.6
3
Annual
9.0 3
10.1 3
9.2 ug/m3
7.6 3
ND
Source: CARE, 2012.
Notes: ppm = parts per million and ug/m3 = micrograms per cubic meter.
Values reported in bold exceed ambient air quality standard.
Kin
Sensitive Receptors and Toxic Air Contaminants. There are groups of people more
affected by air pollution than others. CARB has identified the following persons who
are most likely to be affected by air pollution: children under the age of 14, the
individuals over the age 65, athletes, and people with cardiovascular and chronic
respiratory diseases. These groups are classified as sensitive receptors. Locations that
may contain a high concentration of these sensitive population groups include
residential areas, hospitals, daycare facilities, elder care facilities, elementary schools,
and parks. The closest sensitive receptors are residences located to the north, west, and
south of the western portion of the project site, with additional residences farther south
near the intersection of Tassajara Road and Fallon Road
Toxic air contaminants (TAC) are a broad class of compounds known to cause
morbidity or mortality (usually because they cause cancer) and include, but are not
limited to, the criteria air pollutants listed above. TACs are found in ambient air,
especially in urban areas, and are caused by industry, agriculture, fuel combustion, and
commercial operations (e.g., dry cleaners). TACs are typically found in low
concentrations, even near their source (e.g., diesel particulate matter near a freeway).
Because chronic exposure can result in adverse health effects, TACs are regulated at the
regional, state, and Federal level.
Diesel exhaust is the predominant TAC in urban air and is estimated to represent about
three-quarters of the cancer risk from TACs (based on the Bay Area average).
According to the California Air Resources Board (CARB), diesel exhaust is a complex
mixture of gases, vapors and fine particles. This complexity makes the evaluation of
health effects of diesel exhaust a complex scientific issue. Some of the chemicals in
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 146
City of Dublin September 2012
diesel exhaust, such as benzene and formaldehyde, have been previously identified as
TACs by the CARB, and are listed as carcinogens either under the state's Proposition 65
or under the Federal Hazardous Air Pollutants programs.
CARB has adopted and implemented a number of regulations for stationary and mobile
sources to reduce emissions of diesel particulate matter (DPM). Several of these
regulatory programs affect medium and heavy-duty diesel trucks that represent the
bulk of DPM emissions from California highways. These regulations include the solid
waste collection vehicle (SWCV) rule, in -use public and utility fleets, and the heavy-
duty diesel truck and bus regulations. In 2008, CARB approved a new regulation to
reduce emissions of DPM and nitrogen oxides from existing on -road heavy-duty diesel
fueled vehicles.10 The regulation requires affected vehicles to meet specific performance
requirements between 2012 and 2023, with all affected diesel vehicles required to have
2010 model -year engines or equivalent by 2023. These requirements are phased in over
the compliance period and depend on the model year of the vehicle.
The BAAQMD is the regional agency tasked with managing air quality in the region.
At the State level, CARB (a part of the California Environmental Protection Agency)
oversees regional air district activities and regulates air quality at the State level. The
BAAQMD published CEQA Air Quality Guidelines are used in this assessment to
evaluate air quality impacts of projects."
Regulatory Framework.
Ambient air duality standards. The federal and California ambient air quality standards
are summarized in Table 4.3-1 for important pollutants. The federal and state ambient
standards were developed independently with differing purposes and methods, although
both federal and state standards are intended to avoid health -related effects. As a result,
the federal and state standards differ in some cases. In general, the California state
standards are more stringent. This is particularly true for ozone and PM10•
In addition to the criteria pollutants discussed above, Toxic Air Contaminants (TACs) are
another group of pollutants of concern. Toxic Air Contaminants (TACs) are injurious in
small quantities and are regulated despite the absence of criteria documents. The
identification, regulation and monitoring of TACs is relatively recent compared to that for
criteria pollutants.
IMPACTS AND MITIGATION MEASURES FROM THE EASTERN DUBLIN
EIR
The Eastern Dublin EIR identified significant impacts related to construction, mobile
source and stationary source emissions (Impacts 3.11 / A, B, C, E). Mitigation measures
were adopted to control construction dust and exhaust emissions, and to minimize
mobile and stationary source emissions through, among other things, cooperative
transportation and air quality planning and transportation demand management. All
0 Available online: httpa/w�-vw.arb.ca.�ovlmspro�lonrdiesel/<�nrdiesel.htm. Accessed: July 31, 2012.
" BAAQMD, 201 1, or). cit.
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 147
City of Dublin September 2012
mitigation measures adopted upon approval of the Eastern Dublin GPA/SP continue to
apply to implementing actions and projects such as the proposed project. Even with
mitigation, however, significant cumulative construction, mobile source and stationary
source impacts remained. (Impacts 3.11 / A, 311 / B, 311 / C, and 3.11 / E). Upon approval of
the Eastern Dublin GPA/SP, the City adopted a Statement of Overriding Considerations
for these significant unavoidable impacts (Resolution No. 53-93).
IMPACTS AND MITIGATION MEASURES FROM THE CASAMIRA VALLEY
SUPPLEMENTAL EIR
Two supplemental impacts were identified in this document:
Construction activities associated with the project would have the
potential to cause nuisance related to dust and PMlo . In addition to
Eastern Dublin EIR mitigation measures addressing this topic, Mitigation
Measure SM-AQ-1 requires enhanced dust reduction measures as part of
project construction, including watering or covering of stockpile dirt,
sweeping of access roads, parking areas and staging areas for dust and
installation of erosion control measures.
Cumulative regional emissions from the proposed project and other
Eastern Dublin development projects would exceed the BAAQMD
thresholds of significance for ozone precursors and PMlo. Mitigation
Measure SM-AQ-2 requires a number of measures to assist in reducing the
project's contribution to cumulative air quality degradation, but this
impact would remain significant and unavoidable (Resolution No. 56-07).
Applicable supplemental mitigation measures from the 2007 SEIR continue to apply to
the current project.
STANDARDS OF SIGNIFICANCE
The BAAQMD has revised recommended thresholds of significance since publication of
the prior SEIR. However, BAAQMD's adoption of its 2011 thresholds was called into
question by an order issued March 5, 2012, in California Building Industry Association
v. BAAQMD (Alameda Superior Court Case No. RGI0548693). The order requires
BAAQMD to set aside its approval of the thresholds until it has conducted
environmental review under CEQA. The claims made in the case concerned the
environmental impacts of adopting the thresholds, that is, how the thresholds would
indirectly affect land use development patterns. Those issues are not relevant to the
scientific basis of BAAQMD's analysis of what levels of pollutants should be deemed
significant. This analysis considers the science informing the thresholds as being
supported by substantial evidence. Scientific information supporting the thresholds was
documented in BAAQMD's proposed thresholds of significance analysis.12 Accordingly,
the analysis herein uses the thresholds and methodologies from BAAQMD's May 2011
1' BAAQMD. 2009. California Environmental Quality Act Guidelines Update Proposed Thresholds of
Significance. December,
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 148
City of Dublin September 2012
CEQA Air Quality Guidelines to determine the potential impacts of the project on the
existing environment. The significance thresholds identified by BAAQMD and used in
this analysis are summarized in Table 4.3-3.
Table 4.3-3. Air Quality Significance Thresholds
Construction
Operational Thresholds
Thresholds
Pollutant
Average Daily
Annual Average
Average Daily
Emissions
Emissions
Emissions (lbs./day)
(lbs./day)
(tons/year)
Criteria Air Pollutants
ROG
54
54
10
NO,
54
54
10
PM10
82
82
15
PM2.5
54
54
10
CO
Not Applicable
9.0 ppm (8-hour avg.) or 20.0 ppm (1-
hour avg.)
Fugitive Dust
Best Management
Not Applicable
Practices
Health Risks and Hazards for New Sources
Excess Cancer Risk
10 per one million
10 per one million
Hazard Index
1.0
1.0
Incremental annual
0.3 µg / m3
0.3 µg / m3
average PM2.5
Health Risks and Hazards for Sensitive Receptors (Cumulative from all sources
within 1,000 foot zone of influence) and Cumulative Thresholds for New Sources
Excess Cancer Risk
100 per one million
Chronic Hazard
10.0
Index
Annual Average
3
0.8 µg/m
PM2.5
Note: ROG = reactive organic gases, NOx = nitrogen oxides, PM10 = course particulate matter or
particulates with an aerodynamic diameter of 10 micrometers (pm) or less, PM2.5 = fine particulate
matter or particulates with an aerodynamic diameter of 2.51rm or less; and GHG = greenhouse
gas.
Source: BAAQMD
SUPPLEMENTAL IMPACTS AND MITIGATION MEASURES
Cumulatively considerable air emission impacts. The Bay Area is considered a non -
attainment area for ground -level ozone and fine particulate matter (PM2.J under both
the Federal Clean Air Act and the California Clean Air Act. The area is also considered
non -attainment for respirable particulates or particulate matter with a diameter of less
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 149
City of Dublin September 2012
than 10 micrometers (PM,,,) under the California Clean Air Act, but not the Federal act.
The area has attained both State and Federal ambient air quality standards for carbon
monoxide.
Since publication of the 2007 SEIR, new thresholds of significance have been
recommended. Accordingly, this analysis uses the latest thresholds to access impacts
resulting from implementation of the project. The California Emissions Estimator Model
(CaIEEMod) Version 2011.1.1 was used to predict emissions from construction and
operation of the site assuming full build out of the project. The project land use types
and size, and trip generation rate were input to CaIEEMod.
Construction Period Emissions. CaIEEMod provided average daily and annual
emissions for each phase of construction. CaIEEMod provides emission estimates for
both on -site and off -site construction activities. On -site activities are primarily made up
of construction equipment emissions, while off -site activity includes worker and vendor
traffic. A balance of on -site grading cut and fill is anticipated and no import or export of
soils is expected, based on a discussion with the project applicant. A reasonable
construction build -out scenario was developed, based on projected building
construction techniques, information provided by the project applicant, and CaIEEMod
defaults for construction equipment by phase. It was assumed that no cranes would be
utilized and that generators would operate up to two hours per workday. Attachment 1
(see SEIR Appendix 8.9) includes the CaIEEMod output for construction emissions.
Refined emissions modeling of PM2.5 exhaust from of on -site activities was predicted as
part of the construction health risk assessment addressed later in this report.
The proposed residential land uses were input into CaIEEMod as two separate model
runs, one with 478 new single-family dwelling units (the maximum that could be
allowed under the proposed General Plan and Specific Plan land use designations) and
the second with 381 new single-family DU (CaIEEMod = "Single -Family Housing").
The modeling scenario assumes that the 381 dwelling project would be built out over a
period of approximately 38 months beginning in 2013, and that a 478 dwelling project
could be built out over a period of approximately 44 months beginning in 2013. Off -
road equipment emission factors were adjusted by reducing the load factors used in the
modeling by 33-percent to be consistent with latest 2010 CARB estimates. The model
results for the architectural coatings ROG emissions were reduced by 40 percent to
account for the latest ROG emissions allowed by BAAQMD Regulation 8, Rule 3 —
Architectural Coatings. The new BAAQMD regulations limit most paints to less than
150 grams per liter.
Table 4.3-4 shows average daily construction emissions of ROG, NOX, PM10 exhaust,
and PM,., exhaust during construction of both project scenarios. As indicated in Table
4.3-4, predicted project emissions would not exceed the BAAQMD recommended
significance thresholds under either scenario.
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 150
City of Dublin September 2012
Table 4.3- 4. Construction Period Emissions,
Average Daily Emissions (pounds per day)
Scenario
ROG
NOx
Pm"
Pm'.'
381 Dwelling Units
21.3
26.7
1.6
1.6
(proposal)'
BAAQMD Thresholds (pounds
54
54
82
54
per day)
Exceed Threshold?
No
No
No
No
478 DwellingUnits (Max.)
22.9
27.1
1.6
1.6
BAAQMD Thresholds (pounds
54
54
82
54
per day)
Exceed Threshold?
No
No
No
No
Notes:
Assumes 760 workdays or approximately 20 workdays per month.
2 Assumes 880 workdays or approximately 20 workdays per month.
Source: Illin worth & Rodkin, 2012
Operational Period Emissions. Operational air emissions from the project would be
generated primarily from autos driven by residents and visitors and from delivery and
service trucks. Emissions could also be generated by lawn mowers, gas -powered leaf
blowers, fireplaces, and other common residential sources. Evaporative emissions from
architectural coatings and consumer cleaning / maintenance products are other typical
emissions from residential uses. CalEEMod was used to predict emissions from
construction and operation of the site assuming full build out of the project. The project
land use types and size, and trip generation rate were input to CalEEMod. Adjustments
to the model are described below. Model output worksheets are included in Attachment
1 (see Appendix 8.9).
Emissions associated with vehicle travel depend on the year of analysis because
emission control technology requirements are phased -in over time. Therefore, the
earlier the year analyzed in the model, the higher the emission rates CalEEMod uses.
The earliest year the project could be constructed and begin operating would be 2017.
Use of the this date is considered conservative, as emissions associated with build -out
later than 2017 would be lower.
CalEEMod allows the user to enter specific trip generation rates. Kimley-Horn and
Associates, Inc., provided trip generation rates for the project by land use type, which
were entered into the model (see Chapter 4.1 of this SEIR).
Minor adjustments were made to the area source inputs of CalEEMod. These include
adjustments that all residences would use natural gas and would potentially include
only natural gas -fueled fireplaces. In addition, the emission rate for architectural
coating was adjusted to account for current BAAQMD regulations (Reg. 8, Rule 3).
Table 4.3-5 reports the predicted average daily operational emissions and Table 4.3-6
reports annual emissions. As shown in Tables 4.3-5 and 4.3-6, average daily and annual
emissions of ROG, NOx, PM,,) exhaust, or PM2.5 exhaust associated with operation
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 151
City of Dublin September 2012
would not exceed the BAAQMD significance thresholds. Therefore, this impact is
considered less than significant.
Table 4.3-5. Daily Air Pollutant Emissions from
Operation of the Project (pounds/day)
Scenario
ROG
NOx
PM,O
PMz.s
381 Dwelling Units Option
33.5
40.8
8.9
2.6
Daily Emission Thresholds
54
54
82
54
Exceed Threshold?
No
No
No
No
478 Dwelling Units Option
42.0
51.2
11.2
3.3
Daily Emission Thresholds
54
54
82
54
Exceed Threshold?
No
No
No
No
Source: Kimley-Horn Associates, 2012
Table 4.3-6. Annual Air Pollutant Emissions from
Operation of the Project (tons/year)
Scenario
ROG
NOx
PM10
PM2.5
381 Dwelling Units Option
6.11
7.45
1.62
0.48
Annual Emission Thresholds
10
10
15
10
Exceed Threshold?
No
No
No
No
478 Dwelling Units Option
7.67
9.35
2.04
0.60
Daily Emission Thresholds
10
10
15
10
Exceed Threshold?
No
No
No
No
Source: Kimley-Horn Associates, 2012
Violation of air quality standards. As discussed above, the project would have
emissions that would be below significance thresholds adopted by BAAQMD for
evaluating impacts to ozone and particulate matter. Therefore, the project would not
contribute substantially to existing or projected violations of those standards. Carbon
monoxide emissions from traffic generated by the project would be the pollutant of
greatest concern at the local level. Congested intersections with a large volume of traffic
have the greatest potential to cause high -localized concentrations of carbon monoxide.
Air pollutant monitoring data indicate that carbon monoxide levels have been at
healthy levels (i.e., below State and Federal standards) in the Bay Area since the early
1990s. As a result, the region has been designated as attainment for the standard. There
is an ambient air quality monitoring station in Livermore that measures carbon
monoxide concentrations. The highest measured level over any 8-hour averaging period
during the last 3 years is less than 2.0 parts per million (ppm), compared to the ambient
air quality standard of 9.0 ppm. The roadways affected by the proposed project have
relatively low traffic volumes compared to the busier intersections in the Bay Area.
BAAQMD screening guidance indicates that projects would have a less than significant
impact to carbon monoxide levels if project traffic projections indicate traffic levels
would not increase at any affected intersection to more than 44,000 vehicles per hour.
The intersections affected by the proposed project have much lower traffic volumes
(less than 10,000 vehicles per hour). Therefore, the change in traffic caused by the
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 152
City of Dublin September 2012
proposed project would be minimal and the project would not cause or contribute to a
violation of an ambient air quality standard.
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 153
City of Dublin September 2012
5.0 Alternatives to the Proposed Project
The California Environmental Quality Act requires identification and comparative
analysis of feasible alternatives to the proposed Project which have the potential of
achieving most of the project objectives, but would avoid or substantially lessen any
significant impacts of the project.
The following discussion considers alternative development scenarios. Through
comparison of these alternatives to the proposed project, the advantages of each can be
weighed and considered by the public and by decision -makers. CEQA Guidelines
require a range of alternatives "governed by the rule of reason" and require the EIR to
set forth a range of alternatives necessary to permit a reasoned choice.
5.1 Alternatives Identified in the Eastern Dublin EIR
The Eastern Dublin EIR was prepared for a General Plan Amendment encompassing
approximately 6,920 acres of land and for a Specific Plan for 3,328 acres within the
General Plan Amendment area. The General Plan Amendment and Specific Plan
(GPA/SP) proposed a variety of types and densities of housing, as well as employment -
generating commercial, campus office and other land uses. Other portions of the
planning area were designated schools, open space and other community facilities.
Protection for natural features of the planning area, including riparian corridors and
principal ridgelands, was provided through restrictive land use designations and
policies. The land use plan reflected the Eastern Dublin Project objectives as set forth in
the Eastern Dublin EIR, Section 2.5.
As required by CEQA, the Eastern Dublin EIR identified project alternatives that could
eliminate or reduce significant impacts of the Eastern Dublin Project. The four identified
alternatives included: No Project, Reduced Planning Area, Reduced Land Use
Intensities and No Development. These are described below:
No Project Alternative. The No Project alternative evaluated potential development of
the GPA/SP area under the then -applicable Dublin General Plan for the unincorporated
portion of the planning area under the Alameda County General Plan.
Reduced Planning Area Alternative. The Reduced Planning Area Alternative
evaluated development of the Specific Plan as proposed, but assumed development
beyond the Specific Plan only to the Dublin Sphere of Influence boundary. The effect of
this alternative was to exclude Upper and Lower Doolan Canyon properties from the
project.
Reduced Land Use Intensities Alternative. The Reduced Land Use Intensities
Alternative evaluated potential development of the entire GPA/SP area, but reduced
some higher traffic generating commercial uses in favor of increased residential
dwellings.
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 154
City of Dublin September 2012
No Development. The No Development Alternative assumed no development would
occur in the planning area other than agricultural, open space and similar land uses
then in place.
The Dublin City Council certified the Eastern Dublin EIR on May 10, 1993, under
Resolution No. 51-93. The City Council found the No Project, Reduced Land Use
Intensities and No Development alternatives infeasible and then approved a
modification of the Reduced Planning Area Alternative rather than the GPA/SP project
as proposed (Resolution No. 53-93). This alternative was approved based on City
Council findings that this alternative land use plan would reduce land use impacts,
would not disrupt the Doolan Canyon community, would reduce growth -inducing
impacts on agricultural lands and would reduce traffic, infrastructure and noise impacts
of the originally proposed Eastern Dublin Project. Even under this alternative project,
however, significant unavoidable impacts would remain. Therefore, upon approval of
the GPA/SP, the City Council adopted a Statement of Overriding Considerations
(Resolution No. 53-93).
5.2 Alternatives Identified in the 2007 Casamira Valley SEIR
Alternatives analyzed in the 2007 Supplemental EIR included:
No Project/No Development Alternative. This alternative assumed that the Moller
Ranch property would remain as existing as of the preparation of the DESIR and no
development would occur on the site. Dwellings and other structures would remain as
they currently exist on the property.
No Project/Development under the East County Area Plan. This Alternative considers
development of the Moller Ranch under the East County Area Plan (ECAP), which was
adopted by the Alameda County Board of Supervisors to guide future development in
the unincorporated portion of Alameda County. The ECAP Land Use Diagram shows
that the Moller Ranch was intended to be used for "Large Parcel Agriculture," which
allows minimum parcel sizes of a minimum of 100 acres with one dwelling unit per lot.
Large lot development. The third Alternative would include subdivision of the Moller
Ranch as a large lot subdivision that would include an estimated 50 dwellings sited on
approximately one acre lots each. The Alternative assumed that approximately the
same roadway system would be constructed on the Moller property as included in the
proposed project. Building envelopes would generally be located adjacent to near to
roadways with private open spaces located behind the dwellings extending into the
lower hillside areas.
Attached housing development. This Alternative would have the Moller Ranch portion
developed with up to 326 attached dwellings, with dwellings ranging in size between
2,200 square feet to 2.450 square feet each. Dwellings under this alternative would be
multi -story and on site parking would be provided for each of the units. Access to the
Moller Ranch would be the same as proposed for the proposed project, the
"development envelope" (the portion of the Project site to be graded or disturbed)
would also be the same as for the proposed project and utilities and service lines would
be extended to the development area in the same manner as the proposed Project.
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 155
City of Dublin September 2012
The Dublin City Council certified the Casamira Valley Supplemental EIR on May 1,
2007, by Resolution No. 56-07. The City Council found the No Project/ No Development
Alternative, the No Project/Development under the East County Area Plan (ECAP)
Alternative and the Large Lot Development Alternative infeasible and then approved
the Attached Housing Alternative rather than the Casamira Valley project as proposed.
This alternative was approved based on City Council findings that this alternative land
use plan would further the goals of the Eastern Dublin Specific Plan and would provide
a greater diversity of housing types than originally proposed. Even under this
alternative project, however, significant unavoidable impacts would remain. Therefore,
upon approval of the Casamira Valley project, the City Council adopted a Statement of
Overriding Considerations (Resolution No. 56-07).
5.3 Alternatives Identified in the 2012 Supplemental EIR
The following alternatives are identified and analyzed in this Supplemental EIR:
• Alternative 1: No Project/No Development
• Alternative 2: Large Lot Development
• Alternative 3: Reduced Development
• Alternative 4: Cluster Development
5.3.1 Alternative 1-No Project/ No Development
CEQA requires an analysis of a "No Project" alternative. Under this alternative, it is
assumed that the Moller Ranch would remain as it presently exists and no development
would occur. Existing dwellings and other structures would remain as they currently
exist on the site.
This alternative would avoid the range of environmental impacts described in the
Eastern Dublin EIR, the 2007 DSEIR and this DSEIR, including but not limited to:
Transportation and Traffic: No new roadways, trails or similar circulation
improvements would be constructed, including two drive access roads from
Tassajara Road and a traffic signal at one of the drive intersections proposed in
the project. Tassajara Road would not be widened through the project frontage
portion of the project area and a replacement culvert would not be constructed
over Moller Creek adjacent to the site. Since current land uses would remain,
there would be no new vehicles generated from the project site that would be
added to existing roadways and freeways. There would be no significant and
unavoidable impacts related to project contributions to congested freeway
conditions.
• Biological Resources: No impacts would result to biological resources on the
project site or within and adjacent to Moller Creek since no development would
occur. This includes impacts to special status plants, animals and their respective
habitats. Wildlife movement would only be limited to the extent of existing
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 156
City of Dublin September 2012
fencing. Wetlands and other waters of the U.S. would remain as they currently
exist. Degradation of Moller Creek that flows through the site would continue to
occur within the Project area so long as cattle grazing operations are maintained
on the property.
• Air Quality: Existing source of air emissions would remain. There would be no
short-term air quality impacts associated with construction of new buildings and
other public and private improvements envisioned in the Stage 1 Development
Plan. There would be no Project contribution to long-term, cumulative air quality
emissions, since no new vehicular traffic would be attracted to the Project area.
5.3.2 Alternative 2-Large Lot Development
This Alternative considers development of the Moller Ranch with up to 55 residential
lots, each containing approximately one acre of land. The same proposed on -site
roadway network connecting to Tassajara Road would be constructed, similar to the
proposed project. A small local public park would be located in the approximate center
of the project and a similar trail system proposed in the current project would be built.
There would be approximately the same amount of grading and ground disturbance
(development envelope) as the proposed project. The replacement culvert would be
constructed over Moller Creek under this Alternative.
• Transportation and Traffic: The large lot development alternative would generate
fewer total trips (3,122). AM peak trips (245) and PM peak hour trips (329) than
the proposed project, as identified in Table 5.1, below.
Table 5.1. Alternative 2 v. Proposed Project Trips
Residential
No. of Units
Total Trips
AM Peak Trips
PM Peak Trips
Ty e
Alternative 2
Large Lot Single
55
526
41
56
Family
Residential
Proposed Project
Single Family
381
3,648
286
385
Detached
Residential
Difference
--
-3,122
-245
-329
Source: Jerry Haag, Urban Planner, 2012
There would likely be the same general impacts to local roadway intersections in
the near term and under cumulative (long-term) time periods as identified in
Section 4.1, although impacts related to left -turn lane and vehicle queuing
capacity (Impact SM TRA-10-12) would be reduced as under the proposed
project since fewer trips would be generated, but would likely require
mitigation. Supplemental Mitigation Measures identified in Section 4.1 would be
applied to reduce some of these impacts to a less -than -significant level. This
Alternative would result in no new or more severe impacts compared to the
project. The reduced Alternative would add more trips to the presently
congested local freeway system during peak hours, although fewer trips than the
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 157
City of Dublin September 2012
proposed project and Alternatives 3 and 4. This impact would also be significant
and unavoidable.
Biological Resources: The same impacts to special -status plants and wildlife would
occur under this Alternative as the proposed project, since the same amount of
land would be disturbed for development purposes. These would include
impacts to annual grassland habitat and common wildlife species, introduction
of non-native, invasive plant and impacts to wetlands and jurisdictional waters.
Supplemental Mitigation Measures set forth in Section 4.2 will reduce these
impacts to a less -than -significant level for this Alternative as well as for the
proposed project
The same biological impacts would occur with respect to special -status species,
wetlands and waters for the Moller Creek culvert replacement portion of the
project as would the proposed project, since the same area would be disturbed to
allow the replacement.
• Air Quality: There would be less of an impact with respect to Reactive Organic
Gasses (ROG), particulate matter, carbon monoxide that found with the
proposed project. However, no significant air quality impacts were identified for
the proposed project, no such project or cumulative impacts would occur with
Alternative 2.
5.3.3 Alternative 3-Reduced Development
The third Alternative would include development of 354 single family detached
dwellings on individual lots, each containing approximately 5,000 square feet of land
area. Individual lot sizes would be greater than the proposed project so that future
residents would have more private yard area. This alternative would require more
grading than the proposed project to accommodate dwellings as well as a greater
amount of stabilization along Moller Creek. Two creek crossing are anticipated to
accommodate on -site circulation requirements rather than one crossing as include din
the proposed project. No neighborhood park would be provided.
It is assumed that approximately the same roadway system would be constructed on
the Moller property as under the proposed project.
Alternative 3 would require the installation of the replacement Moller Creek culvert
replacement.
An analysis of the impacts of the Reduced Development Alternative is as follows:
• Transportation and Traffic: Fewer total daily trips would be generated (260) than
would be expected under the proposed project. There would also be fewer AM
peak hour trips (20) and PM peak hour trips (27) that are expected to occur under
the proposed project. This is documented on Table 5.2.
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 158
City of Dublin September 2012
Table 5.2. Alternative 3 v. Proposed Project Trips
Residential
No. of Units
Total Trips
AM Peak Trips
PM Peak Trips
Ty e
Alternative 3
Single Family
354
3,388
266
358
Detached
Residential
Proposed Project
Single Family
381
3,648
286
385
Detached
Residential
Difference
--
-260
-20
-27
Source: Jerry Haag, Urban Planner, 2012
The same traffic and transportation impacts to local roadways, roadway
segments and left -turn lane (queuing) lengths would occur under Alternative 3
and 4 as are expected with the proposed project, although transportation impacts
would likely be less intensive than under Alternative 2. The same mitigation
measures that are recommended for the proposed project would be applied to
reduce some, but not all, traffic impacts to a less -than -significant level. There
would be significant and unavoidable impacts to the Dublin
Boulevard / Dougherty Road intersection during peak hours, the Tassajara
Road / Dublin Boulevard intersection during peak hours and the Dublin
Boulevard / Fallon Road intersection during the PM peak hour. The proposed
Alternative would add vehicle trips to locally congested freeways and this
impacts would significant and unavoidable impacts would occur to nearby
freeways, similar to the proposed project and Alternatives 2 and 4.
Biological Resources: Development under Alternative 3 would have greater
impacts to annual grasslands and common wildlife species, since a slightly larger
development envelope would need to be created than included in the proposed
project. There would also be greater impacts to Moller Creek on the project site
and associated wetlands than is expected to occur under the proposed project
and Alternatives 2 and 4, since a greater extent of the Moller Creek bank would
need to be stabilized. All biological impacts could be mitigated to a less -than -
significant level.
The same biological impacts would occur with respect to special -status species,
wetlands and waters for the Moller Creek culvert replacement portion of the
project as would the proposed project, since the same area would be disturbed to
allow the replacement.
Air Quality: Development under Alternative 3 would result in less intensive air
quality impacts than the proposed project since fewer dwellings would be built
and fewer vehicle trips would be taken. Less -than -significant impacts are
expected with respect to air quality, similar to the proposed project, although
supplemental mitigation measures contained in the 2007 SEIR would continue to
apply to this Alternative.
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 159
City of Dublin September 2012
5.3.4 Alternative 4-Cluster Development
The fourth alternative would include development of 380 cluster dwellings on the site,
which could be in a series of 3-unit complexes with parking. The development envelope
would be somewhat smaller than that of proposed project. A public park would not be
included in this Alternative. The same on -site roadway system would serve the cluster
units. The Moller Creek culvert replacement would be part of this project.
An analysis of the impacts of the Cluster Alternative is as follows:
• Transportation and Traffic: Alternative 4 would result in fewer total daily trips
(1,121) than the proposed project as well as fewer AM peak trips (124) and PM
peak trips (187) than the proposed project due to the nature of the land use. See
Table 5.3.
Table 5.3. Alternative 4 v. Proposed Project Trips
Residential
No. of Units
Total Trips
AM Peak Trips
PM Peak Trips
Type
Alternative 3
Cluster/ Attached
380
2,527
162
198
Residential
Proposed Project
Single Family
381
3,648
286
385
Detached
Residential
Difference
--
-1,121
-124
-187
Source: Jerry Haag, Urban Planner, 2012
The number of proposed trips would likely result in the same impacts to local
and regional roadways and intersections as the proposed project as well as under
Alternatives 2 and 3. Supplemental mitigation measures set forth in Section 4.1
would reduce many of these impacts to a less -than -significant level. There would
be significant and unavoidable impacts to the Dublin Boulevard/Dougherty
Road intersection during peak hours, the Tassajara Road/Dublin Boulevard
intersection during peak hours and the Dublin Boulevard / Fallon Road
intersection during the PM peak hour. Alternative 4 would add vehicle trips to
locally congested freeways and this impacts would significant and unavoidable
impacts would occur to nearby freeways, similar to the proposed project and
Alternatives 2 and 3.
Biological Resources: Less grading would occur under this Alternative than the
proposed project and the Alternatives 2 and 3, since dwellings would be
clustered on the site. Therefore, although impacts would occur to annual
grasslands, common wildlife, wetlands and other jurisdictional waters similar to
the proposed project and Alternatives 2 and 3, the impacts would be less
intensive since less of the site would be disturbed.
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 160
City of Dublin September 2012
The same biological impacts would occur with respect to special -status species,
wetlands and waters for the Moller Creek culvert replacement portion of the
project as would the proposed project, since the same area would be disturbed to
allow the replacement.
• Air Quality: Alternative 4 is expected to result in somewhat fewer air emissions
as the proposed project and Alternatives 2 and 4, since approximately fewer
daily automobile number of trips would be generated from clustered dwellings.
However, based on the air quality analysis contained in Section 4.3, the amount
of development under Alternative 4 would be less -than -significant.
5.4 Environmentally Superior Alternative
Section 15126 (d) (4) of the State of California CEQA Guidelines states that if the
environmentally superior alternative is the "No Project" alternative, the EIR shall also
identify an environmentally superior alternative among the other alternatives.
Alternative 1, the No Project/ No Development alternative, would result in fewer and
less intensive environmental impacts than the proposed Project and all other
alternatives that propose development, since the project area would remain vacant and
no development would occur. Therefore, Alternative 1 would be the Environmentally
Superior Alternative.
As between the remaining alternatives, Alternative 2 would result in less traffic, air
quality and noise impacts, since less development would be permitted under these
Alternatives, where future land uses on the Moller Ranch would include large lot
development of 55 dwellings. However, Alternative 2 would disturb the same amount
of land area and associated biological resources as the proposed project. Similar to the
proposed project and in combination with the remainder of the Eastern Dublin
planning area, Alternatives 2, 3 and 4 would contribute to significant and unavoidable
cumulative air quality impacts and impacts to significant and unavoidable congestion
on nearby regional freeways. None of these Alternatives would achieve the project
Objective of developing 382 dwelling units on the Moller Ranch property, although
Alternative 4 would allow development of up to 380 attached dwellings on the project
site
Therefore, none of the other Alternatives would be the next most Environmentally
Superior Alternative.
.............._
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 161
City of Dublin September 2012
6.0 Required CEQA Discussion
This section of the DEIR addresses the potential cumulative impacts of implementing
the proposed Project, as required by CEQA.
6.1 Cumulative Impacts
Cumulative impacts are defined by CEQA Guidelines (Section 15126.2) as those which
taken individually may be minor but, when combined with similar impacts associated
with existing development, proposed development projects and planned but not built
projects, have the potential to generate more substantial impacts. CEQA requires that
cumulative impacts be evaluated when they are significant and that the discussion
describe the severity of the impacts and the estimated likelihood of their occurrence.
CEQA also states that the discussion of cumulative impacts contained in an EIR need
not be as detailed as that provided for the project alone.
A number of cumulative impacts were identified in the Eastern Dublin EIR. Those
related to this project include:
• Cumulative loss of agricultural and open space lands (Impact 3.1 / F)
• Cumulative degradation of I-580 freeway operations between Tassajara Road
and Fallon Road (Impact 3.3 / A)
• Cumulative degradation of I-580 freeway operations between I-680 freeway and
Dougherty Road (Impact 3.3 / B)
• Cumulative degradation of I-580 freeway operations between Tassajara Road
and Airway Boulevard Impact 3.3 / C)
• Cumulative degradation of I-680 freeway operations north of I-580 (Impact
3.3 / D)
• Cumulative degradation of I-580 east of Airway Boulevard and between
Dougherty Road and Hacienda Boulevard (Impact 3.3/D)
• Cumulative degradation of Dublin Boulevard intersections with Hacienda Drive
and Tassajara Road (Impact 3.3/M)
• Cumulative degradation of Tassajara Road intersections with Gleason Road,
Fallon Road and Transit Spine (renamed to Central Boulevard) (Impact 3.3/N)
• Increased solid waste production and impact on solid waste facilities (Impact 3.4
O and P)
• Future lack of wastewater treatment plant capacity (Impact 3.5 / E)
• Increase in demand for water (Impact 3.5 / Q)
• Direct habitat loss (Impact 3.7/ A)
• Loss or degradation of botanically sensitive habitat (Impact 3 / 7/ C)
• Construction equipment/ vehicle emissions (Impact 3.11 / B)
• Mobile source emissions of reactive organic gasses and oxides of
nitrogen (Impact 3.11 / C)
• Stationary source emissions (Impact 3.11 / E)
The Casamira Valley SEIR identified one new or more severe significant supplemental
impacts not analyzed in the Eastern Dublin EIR. This is Supplemental Impact TRA-1a,
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 162
City of Dublin September 2012
project contribution to peak hour congestion at the Dublin Boulevard/Dougherty Road
intersection during the PM peak hour in the year 2025.
The Moller Ranch SEIR has identified new or more severe cumulative impacts not
identified in earlier CEQA documents. Many of the following cumulative impacts are
deemed more severe than previously identified due to the use of a new traffic model
that analyzes impacts to the year 2035, not 2025 as used in earlier EIRs. Cumulative
impacts include:
• Project contribution to impacts at the Hacienda Drive/Dublin Boulevard
intersection during AM and PM peak hours (Supplemental Impact TRA-1-12)
• Project contribution to impacts at the Tassajara Road/Dublin Boulevard
intersection during the AM and PM peak hours (Supplemental Impact TRA-4-
12)
• Project contribution to impacts at the Tassajara Road/I-580 westbound ramps
during the AM and PM peak hours (Supplemental Impact TRA-5-12)
• Project contribution to impact at the Fallon Road/Dublin Boulevard intersection
during the PM peak hour (Supplemental Impact SM-TRA-6-12).
• Project contribution to impacts along Tassajara Road between Dublin Boulevard
and Gleason Drive during the PM peak hour (Supplemental Impact TRA-8-12)
• Project contribution to impacts along Tassajara Road between I-580 and Dublin
Boulevard (Supplemental Impact TRA-9-12)
• Lack of vehicle storage capacity at the Tassajara Road/Dublin Boulevard under
buildout conditions (Supplemental Impact TRA-10-12).
6.2 Significant and Unavoidable Environmental Impacts
Unavoidable significant adverse impacts are those impacts that cannot be mitigated to a
less -than -significant level. CEQA requires decision -makers to balance the benefits of a
proposed Project against its unavoidable impacts in considering whether to approve the
Project. If the benefits of the proposed Project outweigh the anticipated unavoidable
impacts, the adverse environmental impacts may be considered acceptable by the Lead
Agency. To approve the Project without significantly reducing or eliminating an
adverse impact, the Lead Agency must make a Statement of Overriding Consideration
supported by the information in the record.
Upon approval of the Eastern Dublin Project, the City Council adopted a Statement of
Overriding Considerations for the significant unavoidable impacts identified in the
Eastern Dublin EIR. (Resolution 53-93, May 10, 1993.)
Pursuant to the recent Citizens for a Better Environment case, a Statement of Overriding
Considerations would also be required to address the significant unavoidable impacts
from the Eastern Dublin EIR and Casamira Valley SEIR that are related to this proposed
project.
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 163
City of Dublin September 2012
7.0 Oreanizations and Persons Consulted
7.1 Persons and Organizations
EIR Preparers
The following individuals participated in the preparation of this
document.
Jerry Haag, Urban Planner (project manager)
James West, Kimley Horn Associates (traffic)
James Reyeff, Illingworth & Rodkin Associates (air quality)
Joshua Carman, Illingworth & Rodkin Associates (air quality)
Dr. Pat Bousier, H.T. Harvey Associates (biological resources)
Tom Fraser, WRA Associates (biological resources)
Sean Avent, WRA Associates (biological resources)
Jane Maxwell, Blue Ox Associates (graphics)
City of Dublin Staff
Jeri Ram, AICP, Community Development Director
Kathleen Faubion, AICP, Assistant City Attorney
Michael Porto, Consulting Planner
Mark Lander, P.E. City Engineer
Jaimee Bourgeois, P.E., Traffic Engineer
Tom McCarthy Dublin Police Services Department
Bonnie Terra, Alameda County Fire Department
Applicant Consulting Team
Jeff Lawrence, Braddock & Logan Services
Andy Byde, Braddock & Logan Services
Mark McClellan, McKay & Somps
Lisa Vilhauer, McKay & Somps
Other Agencies and Organizations Contacted
Dublin San Ramon Services District -Stan Kolozdie
7.2 References
The following documents, in addition to those included in the Appendix,
were used in the preparation of this DEIR and are included by reference
herein.
Baldwin, BG, DH Goldman, DJ Keil, R Patterson, TJ Rosatti, and DH Wilken
(eds.). 2012. The Jepson Manual: Vascular Plants of California, second
edition. University of California Press, Berkeley, CA
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Bobzein, S. and J. E. DiDonato. 2007. The status of the California tiger
salamander (Amystoma californiense), California red -legged frog (Rana
draytonii), and foothill yellow -legged frog (Rana boylii), and other
herpetofauna in the East Bay Regional Park District, California. East Bay
Regional Park District.
California Burrowing Owl Consortium. 1993. Burrowing Owl Survey
Protocol and Mitigation Guidlelines. Available at:
http: / / www.dfg.ca.gov/ wildlife/ nongame / docs / boconsortium.pdf
California Department of Fish and Game (CDFG). 2012. California Natural
Diversity Database. Wildlife and Habitat Data Analysis Branch, Sacramento,
CA.
California Natural Diversity Data Base. 2011. California Department of Fish
and Game, Sacramento, California.
California Department of Fish and Game. 2012. Staff report on burrowing owl
mitigation. March 2012.
California Department of Fish and Game (CDFG). 2010. List of Vegetation
Alliances and Associations. Vegetation Classification and Mapping Program,
Sacramento, CA.
California Department of Fish and Game (CDFG). 2009. List of California
Vegetation Alliances. Biogeographic Data Branch. Vegetation Classification
and Mapping Program, Sacramento, CA
California Department of Fish and Game (CDFG). 2007. List of California
Vegetation Alliances. Biogeographic Data Branch. Vegetation Classification
and Mapping Program, Sacramento, CA.
California Department of Fish and Game (CDFG). 2003. List of California
Terrestrial Natural Communities Recognized by the California Natural
Diversity Database Wildlife and Habitat Data Analysis Branch. Vegetation
Classification and Mapping Program, Sacramento, CA.
California Department of Fish and Game (CDFG). 1994. A Field Guide to
Lake and Streambed Alteration Agreements, Sections 1600-1607, California
Fish and Game Code. Environmental Services Division, Sacramento, CA.
California Invasive Plant Council (Cal-IPC). 2011. California Invasive Plant
Inventory Database. California Invasive Plant Council, Berkeley, CA. Online
at: http: / / www.cal-ipc.org / ip / inventory / index.php; most recently accessed:
June 2012
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California Native Plant Society. 2012. Inventory of Rare and Endangered
Plants (online edition, v8-01a). California Native Plant Society. Sacramento,
CA.
East Alameda County Conservation Strategy. 2010. Final Draft. Prepared by
ICF International.
City of Dublin (City). 1992. Eastern Dublin General Plan Amendment and
Specific Plan Final Environmental Impact Report, Part I, December 7, 1992
and Part II December 21, 1992.
. 2002. City of Dublin General Plan. Adopted February 11, 1985
(Updated to February 5, 2005). Community Development Department,
Dublin, CA. Available on the Internet at:
http: / / www.ci.dublin.ca.us /Dublin General Plan.pdf.
City of Dublin. 2010b. Heritage Tree Ordinance Regulations. Prepared by the
City of Dublin Community Development Department. Available at:
www.dublin.ca.gov/brochures/heritagetree
eBird. 2012. eBird: An online database of bird distribution and abundance
[web application]. eBird, Ithaca, New York. Available:
http: / / www.ebird.org. Accessed: June, 2012.
ENGEO, Inc. 2003. Preliminary Geotechnical Exploration for the Moller
Property, Alameda County, California. Prepared for the DeSilva Group.
Environmental Laboratory. 1987. Corps of Engineers Wetlands Delineation
Manual. Department of the Army, Waterways Experiment Station, Vicksburg,
Mississippi 39180-0631.
Federal Register. November 13, 1986. Department of Defense, Corps of
Engineers, Department of the Army, 33 CFR Parts 320 through 330,
Regulatory Programs of the Corps of Engineers; Final Rule. Vol. 51, No. 219;
page 41217.
Federal Register. July 13, 1994. Soil Conservation Service, Department of
Agriculture, 7 CFR 12.31(a)(3)(i). Changes in Hydric Soils of the United States;
Notice of Change. Vol. 59, No. 133.;
GretagMacBeth. 2000. Munsell Soil Color Charts, revised washable edition.
Glover, S. 2009. Breeding bird atlas of Contra Costa County. Mount Diablo
Audubon Society, Walnut Creek, CA.
Holland, R.F. 1986. Preliminary Descriptions of the Terrestrial Natural
Communities of California. Prepared for the California Department of Fish
and Game, Sacramento, CA.
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H. T. Harvey & Associates. 2007. Braddock & Logan Fallon Village Project
Habitat Mitigation and Monitoring Plan. Project Number 2382-02.
Unpublished technical report prepared for Mr. Jeff Lawrence, Braddock &
Logan Services, Inc., Danville, California. 26 March 2007.
Haag, J. 2007. Casamira Valley/Moller Ranch Project
Reorganization / Annexation Specific Plan Amendment, Supplemental
Environmental Impact Report (DSEIR). Prepared for the City of Dublin.
Jennings, M.R. 1994. An Annotated Check List of Amphibians and Reptile
Species of California and Adjacent Waters, third revised edition. California
Department of Fish and Game, Sacramento, CA.
Jennings, M. R., and M. P. Hayes. 1994. Amphibian and reptiles species of
special concern in California. California Department of Fish and Game,
Inland Fisheries Division, Rancho Cordova, California.
Kochert, M., K. Steenhof, C. McIntyre, E. Craig. 2002. Golden Eagle (Agzlila
chi-ysaetos). Pp. 1-44 in A. Poole, F. Gill, eds. The Birds of North America, Vol.
684. Philadelphia: The Birds of North America.
Natural Resources Conservation Service (NRCS). 2010. Field Indicators of
Hydric Soils in the United States, version 7.0. In cooperation with the
National Technical Committee for Hydric Soils, Fort Worth, TX.
NatureServe. 2010. NatureServe Conservation Status. Available online at:
http: / / www.natureserve.org / explorer / ranking.
Orloff, S. 2007. Migratory atory movements of California tiger salamanders in
upland habitat -a five-year study. Pittsburg, California. Prepared for Bailey
Estates, LCC by Ibis Environmental, Inc. May.
Remsen, J. V., Jr. 1978. Bird species of special concern in California. Nongame
Wildlife Investigations Report. 78-1, California Department of Fish and Game.
Reed, Jr., P.B. 1988. National List of Plant Species That Occur in Wetlands:
National Summary. U.S. Fish & Wildlife Service. Biol. Rep. 88 (24).
Sawyer, J., T. Keeler -Wolf, and J. Evens. 2009. A Manual of California
Vegetation. California Native Plant Society, Berkeley, CA.
Sproul, M. J. and M. A. Flett. 1993. Status of the San Toaquin Kit Fox in the
Northwest Margin of its Range. Transactions of the Western Section of the
Wildlife Society 29: 61-69.
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Stebbins, R.C. 2003. A Field Guide to Western Reptiles and Amphibians,
third edition. The Peterson Field Guide Series, Houghton Mifflin Company,
NY.
Texas Parks and Wildlife Department (TPWD). 2007. "Hoary Bat (Lasiurus
cinereus)." <http:/ /www.tpwd.state.tx.us/huntwild/wild/species/hoary/>
Accessed: 6 / 20 / 2012.
Trenham, P. C. and Shaffer, H. B. 2005. Amphibian Upland Habitat Use and
Its Consequences for Population Viability. Ecological Applications, 15(4), pp.
1158-1168.
Trenham, P.C., W. D. Koenig and H. B. Shaffer. 2001. Spatially autocorrelated
demography and interpond dispersal in the salamander Ambystoma
californiense. Ecology 82:3519-3530.
Shuford, W. D. and T. Gardali, editors. 2008. California bird species of special
concern: A ranked assessment of species, subspecies, and distinct
populations of birds of immediate conservation concern in California.
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California, and California Department of Fish and Game, Sacramento,
California.
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05-05. Ordinary High Water Mark Identification. December 7.
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Corps of Engineers Wetland Delineation Manual: Arid West Region.
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Agency. 2007. U.S. Army Corps of Engineers Jurisdictional Determination
Form Instructional Guidebook.
U.S. Department of Agriculture, Natural Resources Conservation Service
(USDA). 2005. Official List of US Hydric Soils.
U.S. Department of Agriculture, Natural Resources Conservation Service
(USDA). 2010. Field Indicators of Hydric Soils in the United States: A Guide
for Identifying and Delineating Hydric Soils, Version 7.0. In cooperation with
the National Technical Committee for Hydric Soils, U.S. Army Corps of
Engineers.
U.S. Department of Agriculture (USDA), Natural Resources Conservation
Service. 2011. Web Soil Survey. Online at
http: / / websoilsurvey.nres.usda.gov; most recently accessed June 19, 2012.
U.S. Fish and Wildlife Service and California Department of Fish and Game.
2003. Interim Guidance on Site Assessment and Field Surveys for
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 168
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Determining Presence or a Negative Finding of the California Tiger
Salamander. October 2003.
U.S. Fish and Wildlife Service. 1999. San Joaquin kit fox survey protocol for
the northern range. Prepared by the Sacramento Fish and Wildlife Office.
June 1999.
U.S. Fish and Wildlife Service. 2000. Endangered and threatened wildlife and plants;
final determination of critical habitat for the Alameda Whipsnake (Masticophis
lateralis euryxanthus). (65:192 FR October 3, 2000).
U.S. Fish and Wildlife Service (USFWS). 2002. Draft Recovery Plan for Chaparral
and Scrub Community Species East of San Francisco Bay, California. USFWS,
Region 1. Portland, Oregon.
U.S. Fish and Wildlife Service (USFWS). 2002. Recovery Plan for the California
Red -legged Frog (Rana aurora draytonii). USFWS, Region 1. Portland, Oregon. viii +
173 pp.
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California Tiger Salamander, Proposed Rule. Federal Register 70, No. 162. August
23.
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Wildlife Office. Available online at: http://www.fws.gov/sacramento; most recently
accessed: June 19, 2012
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and Plants; Designation of Critical Habitat for the California Red -legged Frog;
Final Rule. Federal Register 75(51): 12816-12959.
Wallace Roberts and Todd. 1994. Eastern Dublin Specific Plan. Prepared by
for the City of Dublin, CA.
Wetlands Research Associates, Inc. (WRA). 2002. Biological Assessment of
the Casamira Valley Site, Alameda County, California. Prepared for the
DeSilva Group, Inc., Dublin, CA.
. 2003a. California Tiger Salamander Survey Report, Casamira Valley,
Dublin California. Prepared for the DeSilva Group, Inc., Dublin, CA.
2003b. Delineation of Potential Jurisdictional Wetlands Under Section
404 of the Clean Water Act, Casamira Valley Project Site, Dublin, Alameda
County, California. Prepared for the DeSilva Group, Inc., Dublin, CA.
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_. 2003c. Federally Listed Wildlife and Plant Species, Site Evaluation
Possible Resource Agency Requirements, Casamira Valley Proiect, Dub
Alameda County. Prepared for the DeSilva Group, Inc., Dublin, CA.
. 2003d. Special Status Plant Survey of Casamira Valley, Dublin,
Alameda County, California. Prepared for the DeSilva Group, Inc., Dublin,
CA.
2003e. CRLF Bi
Prepared for the DeSilva Group, Inc.,
Dublin, CA.
. 2003f. San Toaquin Kit Fox Report of Early Evaluation, Casamira
Valley, Alameda County. Prepared for the DeSilva Group, Inc., Dublin, CA.
Vickery, P.D. 1996. Grasshopper Sparrow (Ammodramus savannarum) In The
Birds of North America, no. 239 (A. Poole and F. Gill, Eds.). Academy of
Natural Sciences, Philadelphia, and American Ornithologists' Union,
Washington, D.C.
Zeiner, D. C., W. F. Laudenslayer, Jr., K. E. Mayer, and M. White. 1990.
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Department of Fish and Game, Sacramento, CA.
Moller Ranch & Culvert Replacement Project/Draft Supplemental EIR Page 170
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8.0 Appendices
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City of Dublin September 2012