Loading...
The URL can be used to link to this page
Your browser does not support the video tag.
Home
My WebLink
About
8.1 Approval of a CEQA Addendum and Conceptual Plan for Wallis Ranch Community Park
STAFF REPORT CITY COUNCIL Page 1 of 5 Agenda Item 8.1 DATE: September 21, 2021 TO: Honorable Mayor and City Councilmembers FROM: Linda Smith, City Manager SUBJECT: Approval of a CEQA Addendum and Conceptual Plan for Wallis Ranch Community Park Prepared by: Rosemary Alex, Parks and Facilities Development Coordinator EXECUTIVE SUMMARY: The City Council will consider approval of an Addendum to the Eastern Dublin Environmental Impact Report and the 2005 Dublin Ranch West Supplemental Environmental Impact Report, and approval of the conceptual plan for Wallis Ranch Community Park Project. STAFF RECOMMENDATION: Adopt the Resolution Approving an Addendum to the Eastern Dublin Environmental Impact Report and 2005 Dublin Ranch West Supplemental Environmental Impact Report and Approving the Wallis Ranch Community Park Conceptual Plan (CIP No. PK0421). FINANCIAL IMPACT: As approved in the 2020-2025 Capital Improvement Program (CIP), the total budget for Wallis Ranch Community Park, CIP No. PK0421, is $6,699,000, funded by the Public Facility Fee Fund. The CIP budget includes approximately $5.1 million for construction and approximately $1.6 million in soft costs. The construction cost estimate for the conceptual design is approximately $6.42 million and the estimated project soft costs are approximately $2.2 million. If the City Council were to approve the concept design and direct Staff to proceed with final design, Staff would monitor the estimated cost as design progresses and return to the City Council with a budget adjustment, either as part of the next five-year CIP or as a separate item. 320 Page 2 of 5 DESCRIPTION: The 2020-2025 Capital Improvement Program (CIP) includes Wallis Ranch Community Park, CIP Project No. PK0421, (Attachment 4). The park is located on three separate parcels (known as Parcels 16, 21, and 22), which total 8.85 acres between Tassajara Road and the Wallis Ranch residential neighborhood. Community Input Process The Community Input Process was conducted between March and September 2021. The process included collecting input from the community, developing two conceptual plans, obtaining recommendations from the Parks and Community Services Commission, and reviewing the concept plan with the City Council as part of tonight’s meeting. Listening Phase In early March 2021, Staff established a project webpage on the City’s website and distributed electronic and direct mail communications citywide to receive community input. The communications included links to a survey and an invitation to participate in an online community meeting. As a result of the public outreach, the City received nearly 1,100 responses to the survey, and 25 residents participated in a March 31, 2021 virtual meeting. Interpretation Phase Staff and the design consultant, Callander and Associates, analyzed the feedback received during the Listening Phase, and developed two concept plans and associated design themes for the park (Attachments 5 and 6). A second public meeting was held on June 5, 2021 at the park site with over 200 community members in attendance. At the meeting, the concept plans and design themes were presented. Participants provided verbal and written feedback regarding their preferences for the park. Feedback included a local youth group advocating for the inclusion of a “Buddy Bench” in the park to create an opportunity for connection. The results from the feedback, as shown in Attachment 7, indicate that Alternative A was the preferred park design, and that “Windswept Grassland” was the preferred theme. Refinement Phase As part of the planning process, Staff engaged the traffic engineering firm, Kittelson and Associates, to complete a parking assessment (Attachment 8) to determine the amount of parking needed for Alternatives A and B. The assessment showed that there was sufficient on-street parking to support both alternatives, however, certain program elements of Alternative A would be better served by closer parking. As such, the on-site parking lot design was enlarged from 10-12 parking stalls to 20-25 stalls. The proposed Concept Plan will accommodate approximately 55 parking spaces in total (25 onsite spaces and 30 on-street spaces along the park frontage on Rutherford Drive). At the July 19, 2021, Parks and Community Services Commission meeting, the Commission 321 Page 3 of 5 requested that Alternative A be revised to include the recommendations from the parking study. The Commission also recommended the inclusion of a restroom on Parcel 16 and lights for the basketball courts. The Wallis Ranch Community Park Concept Plan (Attachment 3) incorporates the Parks and Community Services Commission’s requested revisions. The Concept Plan includes the following elements: Parcel 16 “Playgrounds” • Playgrounds for ages two to five years (5,000 square feet) and five to 12 years with nature play area (9,800 square feet) with wood fiber surfacing and a “Buddy Bench” • Picnic area (3,100 square feet) with decomposed granite surface, six picnic tables, and shade trees • Grass area for free play (1.3 acres) • Lighted interior pathways for circulation, security, and exercise • Restroom building with two single-occupant restrooms • Drinking fountain with bottle fill station • Slope planting with drought-resistant, low-maintenance shrubs • Fencing as needed for safety Parcel 21 “Sports Courts” • Three lighted tennis courts individually fenced with wind screens • One lighted tennis court with four-court pickleball overlay • Four lighted pickleball courts • Two lighted basketball courts • Picnic area (1,750 square feet) with decomposed granite surface, five picnic tables, and shade trees • Fitness circuit with six fitness stations • Lighted interior pathways for circulation, security, and exercise • Restroom building with two single-occupant restrooms • 25-space lighted parking lot on site • Drinking fountain with bottle fill station • Five park benches • Turf area (5,700 square feet) adjacent to basketball courts Parcel 22 “Dog Park” • Big dog area (0.7 acres, natural turf) with 4’-tall, galvanized chain link fence • Small dog area (0.2 acres, natural turf) with 4’-tall, galvanized chain link fence • Entry plaza (1,800 square feet) with shade trees • Seating area (1,400 square feet) with three picnic tables and shade trees • Drinking fountain with bottle fill station and integrated dog bowl • Trees and planting at entry and perimeter • Lighting at entry (not designed for nighttime use) 322 Page 4 of 5 • Secondary gate to allow for turfgrass restoration Environmental Review The California Environmental Quality Act (CEQA), together with State Guidelines and City of Dublin CEQA Guidelines and Procedures require that certain projects be reviewed for environmental impacts and that environmental documents be prepared. On May 10, 1993, the City Council adopted the Eastern Dublin Environmental Impact Report (Attachment 9) and on March 15, 2005 the City Council adopted the 2005 Dublin Ranch West Supplemental Environmental Impact Report (Attachment 10). As part of the planning process for the park, it was determined that an additional environmental review would be required. The environmental review has shown that the proposed park elements would have no significant impacts beyond those identified in the Eastern Dublin Environmental Impact Report and the 2005 Dublin Ranch West Supplemental Environmental Impact Report. Therefore, an Addendum (Attachment 2) to the Eastern Dublin Environmental Impact Report and the 2005 Dublin Ranch West Supplemental Environmental Impact Report has been prepared to document this conclusion and to complete the required environmental review for the park. Staff recommends the City Council consider approval of the Addendum and consider approval of the Wallis Ranch Community Park Concept Plan. STRATEGIC PLAN INITIATIVE: None. NOTICING REQUIREMENTS/PUBLIC OUTREACH: The City Council Agenda was posted and attendees of the March 31, 2021 and June 5, 2021 public meetings were notified via e-mail. ATTACHMENTS: 1) Resolution Approving an Addendum to the Eastern Dublin Environmental Impact Report and 2005 Dublin Ranch West Supplemental Environmental Impact Report, and Approving the Wallis Ranch Community Park Conceptual Plan (CIP No. PK0421) 2) Exhibit A to the Resolution – Addendum to Eastern Dublin Environmental Impact Report and 2005 Dublin Ranch West Supplemental Environmental Impact Report 3) Exhibit B to the Resolution – Wallis Ranch Community Park Concept Plan 4) CIP PK0421 - Wallis Ranch Community Park 5) Concept Plans – Alternative A and B 6) Inspiration Imagery –Themes 1-3 7) Public Meeting #2 Survey Results 8) Parking Assessment – Technical Memorandum 323 Page 5 of 5 9) Resolution No. 51-93 Certifying the Addendum and the Final Environmental Impact Report for the Eastern Dublin General Plan Amendment and Specific Plan (with attachments) 10) Resolution No. 42-05 Certifying a Supplemental Environmental Impact Report and Adopting Mitigation Findings, Findings Regarding Alternatives, a Statement of Overriding Considerations and a Mitigation Monitoring and Reporting Program for the Dublin Ranch West Project (including the 2005 Dublin Ranch West Final Supplemental Environmental Impact Report) 324 Attachment 1 Reso. No. XX-21, Item X.X, Adopted XX/XX/21 Page 1 of 2 RESOLUTION NO. XX-21 A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF DUBLIN APPROVING AN ADDENDUM TO THE EASTERN DUBLIN ENVIRONMENTAL IMPACT REPORT AND THE 2005 DUBLIN RANCH WEST SUPPLEMENTAL ENVIRONMENTAL IMPACT REPORT, AND APPROVING THE WALLIS RANCH COMMUNITY PARK CONCEPTUAL PLAN (CIP NO. PK0421) WHEREAS,the Wallis Ranch Community Park project, CIP No. PK0421, is located in the eastern portion of the City of Dublin for which the City of Dublin adopted the Eastern Dublin General Plan Amendment/Specific Plan to provide a planning framework for land uses, including recreational facilities and community parks; and WHEREAS,on May 10, 1993, the City Council adopted Resolution No. 51-93, certifying the Addendum and the Final Environmental Impact Report for the Eastern Dublin General Plan Amendment and Specific plan (“Eastern Dublin EIR”) pursuant to CEQA Guidelines, Section 15168 (SCH: 91103064); and WHEREAS,on March 15, 2005, the City Council adopted Resolution No. 42-05 certifying the Supplemental Environmental Impact Report for the Dublin Ranch West Project, and adopting the mitigation findings, findings regarding alternatives, the Statement of Overriding Considerations, and the Mitigation Monitoring Program (“2005 Dublin Ranch West Supplemental EIR”) pursuant to CEQA Guidelines, Section 15168 (SCH: 2003022082); and WHEREAS,the proposed improvements at Wallis Ranch Community Park project include lighted sports courts (tennis, pickleball, and basketball), play areas, dog park, fitness area, restroom structures, open turf recreation area, picnic areas, parking, and landscaping; and WHEREAS,consistent with the City of Dublin Parks and Recreation Master Plan, the project site would be developed as an “Active Community Park”; and WHEREAS,the proposed project would not include facilities that would substantially increase the intensity of use at the project site or draw visitors from the surrounding region; and WHEREAS, the City prepared an initial study checklist pursuant to Public Resources Code Section 21166, and CEQA Guidelines Sections 15162 and 15164, subdivision (a), to evaluate whether the proposed improvements would result in any new impacts or impacts that would be more severe than were evaluated and disclosed in the Eastern Dublin EIR and the 2005 Dublin Ranch West Supplemental EIR; and WHEREAS, CEQA Guidelines Section 15164, subdivision (a) provides that the lead agency or a responsible agency shall prepare an addendum to a previously certified Environmental Impact Report (EIR) or Mitigated Negative Declaration (MND) if some changes or additions are necessary but none of the conditions described in CEQA Guidelines Section 15162 calling for preparation of a subsequent EIR or MND have occurred (CEQA Guidelines § 15164, subdivision (a)); and WHEREAS, pursuant to the requirements of CEQA, the City prepared an Addendum for the project (the “Addendum”) shown as Exhibit A, attached hereto and incorporated herein by reference; and 325 Reso. No. XX-21, Item X.X, Adopted XX/XX/21 Page 2 of 2 WHEREAS,the Addendum reflected the City’s independent judgment and analysis of the potential environmental impacts of the proposed improvements for the Wallis Ranch Community Park project, and concluded that the project would not result in any new significant impacts or substantially increase the severity of any significant impacts identified in the Eastern Dublin EIR and the 2005 Dublin Ranch West Supplemental EIR, and no other CEQA standards for supplemental review are met; and WHEREAS, the Addendum, checklist, and attached documents constitute substantial evidence supporting the conclusion that preparation of a subsequent MND is not required; and WHEREAS, the City Council considered the Addendum and all above-referenced reports, recommendations, and testimony to evaluate the Wallis Ranch Community Park Conceptual Design. NOW, THEREFORE, BE IT RESOLVED that the City Council of the City of Dublin does hereby approve the Addendum to the Eastern Dublin Environmental Impact Report and the 2005 Dublin Ranch West Supplemental Environmental Impact Report (attached as Exhibit A and incorporated herein by reference). NOW, THEREFORE, BE IT RESOLVED that the City Council of the City of Dublin does hereby approve the Wallis Ranch Community Park Conceptual Design (attached as Exhibit B and incorporated herein by reference). PASSED, APPROVED AND ADOPTED this 21st day of September 2021, by the following vote: AYES: NOES: ABSENT: ABSTAIN: ______________________________ Mayor ATTEST: _________________________________ City Clerk 326 Wallis Ranch Park Project Addendum to the Eastern Dublin Environmental Impact Report and the 2005 Dublin Ranch West Supplemental Environmental Impact Report September 7, 2021 Attachment 2 EXHIBIT A 327 This page intentionally left blank. 328 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 1 Table of Contents Introduction 3 Background 5 Project Description 7 Environmental Setting 9 Environmental Checklist 11 Explanation of Environmental Checklist Responses 13 329 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 2 List of Figures Figure 1: Regional Location ......................................................................................................... 143 Figure 2: Aerial Photograph of Project Site and Surrounding Land Uses ................................... 144 Figure 3: Conceptual Park Plan – Alternative A .......................................................................... 145 Figure 4: Conceptual Park Plan – Alternative B .......................................................................... 146 Note: All figures are included at the end of the document. List of Tables Table A: Construction Vibration Damage Criteria ...................................................................... 101 Table B: City of Dublin Land Use/Noise Compatibility Standards (dBA CNEL) ........................... 102 Table C: Typical Maximum Construction Equipment Noise Levels (Lmax) ................................. 105 330 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 3 Wallis Ranch Park Project Addendum to the Eastern Dublin Environmental Impact Report and the 2005 Dublin Ranch West Supplemental Environmental Impact Report Introduction This Initial Study has been prepared in accordance with the provisions of the California Environmental Quality Act (CEQA) and assesses the potential environmental impacts of implementing the proposed project described below. The Initial Study consists of a completed environmental checklist and a brief explanation of the environmental topics addressed in the checklist. Because the proposed project is generally based on the land use designations established by the City of Dublin General Plan, this Initial Study relies on a Program Environmental Impact Report (EIR) prepared for the Eastern Dublin General Plan Amendment (Eastern Extended Planning Area) and Eastern Dublin Specific Plan (Eastern Dublin EIR), 1 which evaluated the development of over 3,300 acres in the eastern part of the City. The Eastern Dublin EIR was certified by the City in 1993. Two addenda to the Eastern Dublin EIR were subsequently approved by the City. In 2005, a Supplemental EIR (2005 SEIR) to the Eastern Dublin EIR was prepared for the Dublin Ranch West Project, also known Wallis Ranch, as well as other smaller properties adjacent to the Dublin Ranch West site. The Dublin Ranch West SEIR was certified by the City in 2005. The Dublin Ranch West SEIR analyzed annexation of the property to the City and the Dublin San Ramon Services District, as well as development of 1,034 residential units on the site. The City ultimately approved a total of 935 residential units. In 2014, the City adopted an Addendum for the Wallis Ranch/Trumark Project (2014 Addendum), supported by an Initial Study checklist, to amend the previous land entitlements to allow for development of 809 residential units at various densities and product types, as well as parks, open space, public/semi‐public uses and infrastructure improvements. The proposed development plan evaluated in the 2014 Addendum identified the location for a Neighborhood 1 Dublin, City of. 1992. Final Environmental Impact Report, State Clearinghouse No. 91103064, Eastern Dublin General Plan Amendment and Specific Plan. December. 331 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 4 Park in the southern portion of the site, adjacent to Tassajara Road; however, details regarding the proposed park design were not known or evaluated in the 2014 Addendum. The subject of this Initial Study is the Wallis Ranch Park project, which includes construction and operation of proposed improvements on an approximately 9‐acre site within the Wallis Ranch/Trumark residential development, located in eastern Dublin. Proposed improvements include lighted sports courts (tennis and pickleball), basketball courts, play areas, dog park, fitness area, restroom, open turf recreation area, picnic areas, parking, and landscaping. Consistent with the City of Dublin Parks and Recreation Master Plan, the project site would be developed as an “Active Community Park,” rather than a “Neighborhood Park” as designated in the prior environmental documents. However, the proposed project would not include facilities that would substantially increase the intensity of use at the project site or draw visitors from the surrounding region. This Addendum, checklist, and attached supporting documents have been prepared to determine whether and to what extent the Eastern Dublin EIR and the 2005 SEIR prepared by the City of Dublin remain sufficient to address potential impacts of the proposed Wallis Ranch Park project, or whether additional documentation is required under California Environmental Quality Act (CEQA) (Public Resources Code [PRC], § 21000, et seq.). Pursuant to Public Resources Code Section 21166, and CEQA Guidelines Sections 15162 and 15164, subdivision (a), the attached checklist has been prepared to evaluate the proposed project. The attached checklist uses the standard environmental checklist categories provided in Appendix G of the CEQA Guidelines. CEQA Guidelines Section 15164, subdivision (a) provides that the lead agency or a responsible agency shall prepare an addendum to a previously certified Environmental Impact Report (EIR) or MND if some changes or additions are necessary but none of the conditions described in CEQA Guidelines Section 15162 calling for preparation of a subsequent EIR or MND have occurred (CEQA Guidelines § 15164, subd. (a)). This Addendum, checklist, and attached documents constitute substantial evidence supporting the conclusion that preparation of a subsequent MND is not required prior to approval of the above‐referenced permits by responsible and trustee agencies and provides the required documentation under CEQA. Project Title Wallis Ranch Park Project Lead Agency Name and Address City of Dublin Public Works Department 332 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 5 100 Civic Plaza Dublin, CA 94568 Contact Person and Phone Number Rosemary Alex Parks & Facilities Development Coordinator Phone: 925/833‐6630 rosemary.alex@dublin.ca.gov Project Sponsor City of Dublin General Plan Designation Neighborhood Park Zoning Planned Development (PD) Ordinance No. 11‐14 and PD Ordinance No. 09‐15 Project Approvals The City proposes to approve the conceptual master plan for the Wallis Ranch Park Project. Background Project Location and Context The proposed project site is in the City of Dublin, Alameda County, California and consists of an approximately 9‐acre site within the Wallis Ranch/Trumark residential development, located in eastern Dublin (Assessor’s Parcel Numbers [APNs]: 986‐0045‐018‐00, 986‐0045‐017‐00, and 986‐0045‐012‐00). The project is located west of Tassajara Road, between Rutherford Road and Wallis Ranch Drive. Tassajara Creek bisects the site. A conservation easement has been established on both sides of the creek to protect its value for open space, storm drainage facilities, and water quality treatment. Surrounding land uses include residential development to the north, undeveloped open space to the west and south, and Tassajara Road and Quarry Lane School to the east. Figures 1 and 2 provide the Regional Location and Aerial Photograph of the Project Site and Surrounding Land Uses, respectively. 333 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 6 Prior Environmental Review Documents The project has been included in several previous CEQA documents, as noted below. Eastern Dublin General Plan Amendment and Eastern Dublin Specific Plan (State Clearinghouse No. 1991103064). A Program Environmental Impact Report for the Eastern Dublin General Plan Amendment (Eastern Extended Planning Area) and the Eastern Dublin Specific Plan (EDSP) was certified by the City Council in 1993 by Resolution No. 51‐93. This document and its related Addenda collectively are referred to as the Eastern Dublin EIR. The Eastern Dublin EIR evaluated the following impacts: Land Use; Population, Employment and Housing; Traffic and Circulation; Community Services and Facilities; Sewer, Water and Storm Drainage; Soils, Geology and Seismicity; Biological Resources; Visual Resources; Cultural Resources; Noise; Air Quality; and Fiscal Considerations. The City adopted a Statement of Overriding Considerations (Resolution No. 53–93) for the following impacts: Cumulative loss of agriculture and open space land, cumulative traffic, extension of certain community facilities (natural gas, electric and telephone service), consumption of non ‐ renewable natural resources, increases in energy uses through increased water treatment and disposal and through operation of the water distribution system, inducement of substantial growth and concentration of population, earthquake ground shaking, loss or degradation of botanically sensitive habitat, regional air quality, noise and alteration of visual character. The Eastern Dublin EIR was challenged in court and was found to be legally adequate. Two addenda documents to the Eastern Dublin EIR have been approved by the City as described above. Dublin Ranch West Supplemental EIR (State Clearinghouse No. 200322082). In 2005, a Supplemental EIR (SEIR) to the Eastern Dublin EIR was prepared for the Dublin Ranch West Project, also known as Wallis Ranch, as well as other smaller properties adjacent to the Dublin Ranch West project site. The Dublin Ranch West SEIR was certified by the City on March 15, 205 by City Council Resolution No. 42‐05. The Dublin Ranch West SEIR analyzed annexation of the property to the City of Dublin and Dublin San Ramon Services District (DSRSD), amendments to the Dublin General Plan and Eastern Dublin Specific Plan, a Planned Development (PD) prezoning, and Stage 1 Development Plan. Following certification of the Dublin Ranch West SEIR, the City approved a PD rezoning with related Stage 2 Development Plan for the site, a Site Development Review (SDR) permit, a vesting tentative subdivision map, and a Development Agreement. 334 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 7 The Dublin Ranch West SEIR analyzed traffic and transportation, as well as the other environmental impacts associated with development of 1,034 residential units on the site, although the City ultimately approved 935 residential units. The Dublin Ranch West SEIR determined that the project would exceed Bay Area Air Quality Management District air quality standards, resulting in significant and unavoidable impacts on a project and cumulative level. Wallis Ranch/Trumark Addendum (2014 Addendum). An Addendum, supported by an Initial Study checklist, was prepared to amend the previous land entitlements to allow for development of 809 residential units at various densities and product types, as well as parks, open space, public/semi‐public uses and infrastructure improvements. The 2014 Addendum and related Statement of Overriding Considerations was adopted by City Council Resolution No. 67‐14 on May 20, 2014. The proposed development plan evaluated in the Wallis Ranch/Trumark Addendum identified the location for a Neighborhood Park in the southern portion of the site, adjacent to Tassajara Road. Project Description The City of Dublin proposes to construct and operate a new community park near the Wallis Ranch development in Eastern Dublin. The proposed project elements, construction methodology and operation and maintenance activities for the park are described below. Project Elements In spring 2021, the City, working with Callander Associates, began a community‐based design process for the future park at Wallis Ranch. The planning process included several public meetings and an online survey to obtain feedback from the community regarding the features that were desired for a future park near the Wallis Ranch community. Based on the community outreach process, priority amenities identified for inclusion at the park include: lighted tennis facility, pickleball courts, a dog park, and a restroom. Other proposed facilities include play areas, walking paths, turf open space, and basketball courts. The community process has resulted in two conceptual designs (Figures 3A and 3B), which include the following community‐ identified improvements: Lighted Sports Courts. The Lighted Sports Courts area would be located along Tassajara Road and would include tennis and pickleball courts. Courts would be lit for evening use. The lighting would be set on a timer and would automatically turn off at 10:00 p.m. A new restroom would be installed near the Lighted Sports Courts. Parking for the Lighted Sports Courts would be from a new 20‐25 car parking area along Rutherford Drive. Basketball courts would also be provided either adjacent to the Lighted Sports Courts or across Rutherford Drive. Dog Park. A Dog Park would be provided either at the south end of the park near the Tassajara Road/Rutherford Drive intersection or in the northern portion of the park, west of Tassajara 335 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 8 Creek. The area would be fenced to allow voice‐controlled dogs to be off leash. The dog park would be separated to allow for rotation of turf maintenance. Infrastructure would also be provided (e.g. water). Open Turf Recreation Area. An open turf area would be provided in the northern portion of the project site between Wallis Ranch Drive and Rutherford Drive. It would be accessed via an entry plaza and pedestrian walkways connecting it to other park elements. This area would be used as an open, flexible space for passive recreation use (such as picnicking), as well as active recreation. Designated picnic areas would also be provided within the park site to accommodate group gatherings. Tot Play Area/Youth Play Area. Play areas are proposed either at the northernmost boundary of the project site (Alternative A) or adjacent to the Lighted Sports Complex (Alternative B). The proposed tot playground would be geared toward children aged 2‐5 and would be enclosed with a 4‐foot‐tall fence. Another play area would be provided for children aged 5‐12 . Parking and Circulation. Consistent with City of Dublin standards, a small parking area 20‐ 25stalls) would be provided off of Rutherford Drive north of the proposed Lighted Sports Courts. On‐street parking would also be available. The majority of the proposed park would be located along the west side of Tassajara Road, south of Tassajara Creek. Access to the park would be provided via Wallis Ranch Drive and Rutherford Drive from Tassajara Road. The proposed project would also provide pedestrian and bicycle pathways to connect the various park improvements. Lighting. Additional LED pathway safety lighting, fixtures, and poles would be installed along pathways and parking lots for security lighting. As described above, new lights at the sports courts would also be installed to accommodate evening use. Consistent with City of Dublin Municipal Code Chapter 8.40, court lighting would not exceed a maximum height of 20 feet and would be direct downward to minimize spillover onto adjacent properties. Lights would be placed on a timed controller and would not be used past the hour of 10:00 p.m. Landscaping and Trees. Trees, shrubs, and groundcovers would be used throughout the park. The exact species have not yet been determined, but most would be either native species or drought tolerant species for water conservation. The turf grass areas would require typical maintenance such as fertilizer and irrigation. An automatic irrigation system would be designed to minimize water use and be adapted to weather conditions. Utilities and Stormwater. The proposed project would connect to existing utility infrastructure in the project area. Water and sewer mains are located along Tassajara Road. In compliance with the C.3 Provisions of the Municipal Regional Permit, stormwater collection and treatment 336 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 9 systems such a swales, detention basins and storm drain lines would be included to address drainage within the project site. Construction Construction is anticipated to commence in spring 2022 and would extend for approximately 8 months. Construction would require use of typical construction equipment for grading the site and installing park facilities. Construction would occur daily during daylight hours, from approximately 7:30 a.m. to 5:00 p.m. Construction staging would occur on the project site. Construction workers, equipment and deliveries would access the site via Tassajara Road. Cut and fill from project grading would be balanced on‐site. Operation and Maintenance The proposed project would be open daily to informal use, including picnicking, walking, jogging, bicycling, and use of general park facilities. Like most of the City’s parks, the proposed park would be open from sunrise until one hour after sunset. The lighted court would close at 10:00 p.m. The City of Dublin Public Works Department would manage the design and construction of the proposed park, as well as ongoing maintenance and operations. Maintenance activities would be performed by the City’s contracted service provider. Maintenance activities would include mowing, facility cleaning, vegetation management, and maintenance of recreation facilities. Environmental Setting Project Site and Existing Facilities As described above, the project site encompasses 8.75 acres of land on three parcels within the Wallis Ranch residential development. All three parcels are currently undeveloped and have been rough graded. Topography of the site is relatively flat with views of the hillsides to the west. Tassajara Creek and its associated riparian woodland bisects the project site. The creek corridor is protected by an existing conservation easement. Two bridge crossings of Tassajara Creek were constructed as part of the residential development project, which provide vehicular connections to the park parcels. Consistent with the prior environmental documents, barriers have been installed along the boundaries of the riparian corridor to prevent intrusion into the protected area and to prevent migration of sensitive wildlife into the development area. Street trees and other landscape plantings, sidewalk improvements, and street lights line Tassajara Road, Wallis Ranch Road, and Rutherford Drive, which border the project site. A sculptural element has been installed at the intersection of Tassajara Road and Rutherford 337 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 10 Drive and various entry elements have also been installed at the intersection of Tassajara Road and Wallis Ranch Road. These elements would be retained and have been incorporated into the project design. Surrounding Land Uses As shown in Figure 2, surrounding land uses include residential development to the north, undeveloped open space to the west and south, and Tassajara Road and Quarry Lane School to the east. 338 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 11 Environmental Checklist Environmental Factors Potentially Affected by the Project The environmental factors checked below would be potentially affected by this project, involving at least one impact that is a "Potentially Significant Impact" as indicated by the checklist on the following pages. Aesthetics Agricultural and Forestry Resources Air Quality Biological Resources Cultural Resources Energy Geology / Soils Greenhouse Gas Emissions Hazards & Hazardous Materials Hydrology / Water Quality Land Use / Planning Mineral Resources Noise Population / Housing Public Services Recreation Transportation / Traffic Tribal Cultural Resources Utilities / Service Systems Wildfire Mandatory Findings of Significance 339 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 12 Determination On the basis of this initial evaluation: I find that the proposed project COULD NOT have a significant effect on the environment, and a NEGATIVE DECLARATION will be prepared. I find that although the proposed project could have a significant effect on the environment, there will not be any new or substantially more significant effect in this case because all potentially significant effects: (a) have been analyzed adequately in earlier CEQA documents pursuant to applicable standards; and (b)have been avoided or mitigated pursuant to those earlier CEQA documents, including revisions or mitigation measures that are imposed on the proposed Project, except for those impacts which were identified as significant and unavoidable and for which Statements of Overriding Considerations were previously adopted by the City. An Addendum to the Eastern Dublin Environmental Impact Report, and the 2005 Dublin Ranch West Supplemental Environmental Impact Report will be prepared. X I find that the proposed project MAY have a significant effect on the environment and an ENVIRONMENTAL IMPACT REPORT is required. I find that the proposed project MAY have a potentially significant or a potentially significant unless mitigated impact on the environment, but at least one effect (1) has been adequately analyzed in an earlier document pursuant to applicable legal standards, and (2) has been addressed by mitigation measures based on the earlier analysis as described on attached sheets. An ENVIRONMENTAL IMPACT REPORT is required, but it must analyze only the effects that remain to be addressed. I find that although the proposed project could have a significant effect on the environment, because all potentially significant effects (a) have been analyzed adequately in an earlier EIR or NEGATIVE DECLARATION pursuant to applicable standards, and (b) have been avoided or mitigated pursuant to that earlier EIR or NEGATIVE DECLARATION, including revisions or mitigation measures that are imposed upon the proposed project, nothing further is required. CITY OF DUBLIN _________________________________ _____________________________ Name, Title Date September 8, 2021 Andrew C. Russell, Public Works Director 340 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 13 Explanation of Environmental Checklist Responses Aesthetics ENVIRONMENTAL IMPACTS Issues Potentially Significant Issues Potentially Significant Unless Mitigation Incorporated Less Than Significant Impact No New Impact 1. AESTHETICS. Would the project: a. Have a substantial adverse effect on a scenic vista? X b. Substantially damage scenic resources, including but not limited to trees, rock outcroppings, and historic buildings within a state scenic highway? X c. Substantially degrade the existing visual character or quality of public views of the site and its surroundings? (Public views are those that are experienced from publicly accessible vantage point). If the project is in an urbanized area, would the project conflict with applicable zoning and other regulations governing scenic quality? X d. Create a new source of substantial light or glare which would adversely affect day or nighttime views in the area? X Environmental Setting The project site is located in Dublin, within the proposed Wallis Ranch development. The project site consists of three parcels and is bounded to the west by undeveloped hillsides, to the north and east by residential development, to the east by Tassajara Road and to the south by undeveloped open space. All three parcels are currently undeveloped. Topography of the site is relatively flat with views of the hillsides to the west. Due to intervening development and site topography, scenic vistas from the project site are limited. Tassajara Creek and its associated riparian woodland bisects the project site. The creek corridor is protected by an existing conservation easement; therefore, trees and other vegetation within this area would be preserved. Street trees and other landscape plantings line Tassajara Road, Wallis Ranch Road, and Rutherford Drive, which border the project site. The project site is located in a developed area. Streetlights, vehicle head and tail lights on area roadways, and lighting associated with adjacent development are the existing sources of light and glare in the project area. 341 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 14 Regulatory Framework State Regulations State Scenic Highways Program The California Department of Transportation’s (Caltrans) Landscape Architecture Program administers the Scenic Highway Program contained in the Streets and Highways Code, Sections 260–263. The purpose of the program is to protect and enhance the natural scenic beauty of California highways and adjacent corridors through special classifications. State Highways are classified as either Officially Listed or Eligible. A highway may be designated scenic based on the visibility of the natural landscape to travelers, the scenic quality of the landscape, and the extent to which development intrudes upon the traveler's enjoyment of the view. According to Caltrans’ California Scenic Highway Mapping System, the closest officially designated State scenic highway to the project area and project site is I‐580. Local Regulations City of Dublin General Plan As described in the Circulation and Scenic Highways Element of the City of Dublin General Plan, I‐580, I‐680, and Tassajara Road were designated as scenic routes by Alameda County in 1966. Per the City of Dublin General Plan policies, design review would be required for all projects visible from a designated scenic route in order to enhance a positive image of Dublin as seen by through travelers. The following policies related to visual resources are applicable to the proposed project: Implementing Policy 5.7.1.A.1. Exercise design review of all projects visible from a designated scenic route. Implementing Policy 5.7.1.A.2. Implement the Eastern Dublin Scenic Corridors Policies and Standards for projects within the Eastern Extended Planning Area. City of Dublin Municipal Code Chapter 8.104, Site Development Review, of the City of Dublin Municipal Code establishes the procedure for approving, conditionally approving, or denying Site Development Review permits to promote orderly, attractive and harmonious development for new development projects that are compatible with surrounding properties and neighborhoods. Adopted Site Development Review Guidelines are used to guide Site Development Review applications. 342 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 15 Previous CEQA Documents Eastern Dublin EIR The Eastern Dublin EIR identified potentially significant impacts related to standardized tract development, obscuring distinctive natural features, alteration of hillsides, ridges, and watercourses, alteration of Dublin’s visual identity as a freestanding city, scenic vistas, and scenic routes. All of these impacts were determined to be less than significant with implementation of mitigation measures identified in the Eastern Dublin EIR. The Eastern Dublin EIR determined that impacts associated with the alteration of the rural/open space visual character of the project area and alteration of the visual character of the flatlands would be significant and unavoidable. The following mitigation measures would apply to the proposed project: MM 3.8/1.0 Establish a visually distinctive community which preserves the character of the natural landscape by protecting key visual elements and maintaining views from major travel corridors and public spaces. MM 3.8/2.0 Implement the land use plan for the Project site which emphasizes retention of the predominant natural features, such as ridgelines and watercourses, and sense of openness that characterize eastern Dublin. MM 3.8/3.0 Preserve the natural open beauty of the hills and other important visual resources, such as creeks and major stands of vegetation. MM 3.8/4.0 Visual impacts of extensive grading shall be reduced by sensitive engineering design, by using gradual transition from graded areas to natural slopes and by revegetation. MM 3.8/4.1 Alterations of existing natural contours shall be minimized. Grading shall maintain the natural topography as much as possible. Grading beyond actual development areas shall be for remedial purposes only. MM 3.8/4.4 Graded slopes shall be re‐contoured to resemble existing landforms in the immediate area. Cut and graded slopes shall be revegetated with native vegetation suitable to hillside environments. MM 3.8/4.5 The height of cut and fill slopes shall be minimized to the greatest degree possible. Grades for cut and fill slopes should be 3:1 or less whenever feasible. 343 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 16 MM 3.8/5.1 Structures shall not be located where they would obstruct scenic views or appear to extend above an identified scenic ridgetop (i.e., silhouetted) when viewed from designated scenic routes. MM 3.8/6.0 Tassajara Creek and other stream corridors are visual features that have special scenic value for the planning area. The visual character of these corridors should be protected from unnecessary alteration or disturbance and adjoining development should be sites to maintain visual access to the stream corridors. MM 3.8/7.0 Preserve views of designated open space areas. MM 3.8/8.1 The City should require that projects with potential impacts on scenic corridors to submit a detailed visual analysis with development project application. Applicants will be required to submit graphic simulations and/or section drawn from affected travel corridors through the parcel in question, representing typical views of the parcel from scenic routes. The graphic depiction of the location and massing of the structure and associated landscaping can then be used to adjust the project design to minimize the visual impacts. Dublin Ranch West SEIR Aesthetics were addressed in the Initial Study for the SEIR. No potentially significant aesthetic impacts or mitigation measures were identified. 2014 Addendum No new or more severe impacts related to visual resources than were previously analyzed in the prior environmental documents were identified in the 2014 Addendum. The 2014 Addendum determined that with adherence to the mitigation measures identified in the Eastern Dublin EIR and the visual policies contained in the Eastern Dublin Specific Plan, no new impacts would occur. Project Impacts and Mitigation Measures (a) Scenic vistas, views No New Impact. A scenic vista is defined as a viewpoint that provides expansive views of a highly valued landscape for the benefit of the general public. According to the Eastern Dublin Specific Plan, views within the planning area are dominated by rolling hills. Long‐range views of scenic vistas are available from the flatlands near I‐580 and higher elevations; however, topographic conditions create vistas which are constrained. As described above, the project site is relatively flat and the surrounding area is largely developed with residential uses allowing for limited views of the surrounding landscape. However, the hillsides to the west can be seen from the project site. 344 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 17 The proposed project would result in the development of the project area with a park. Visible elements of the proposed project would include the lighted sports courts, basketball courts, play areas, turf area, walkways, landscaping and lighting. Proposed improvements would not include any tall structures or landscaping that would reduce, obstruct, or degrade scenic vistas. The most evident new feature within the viewshed would be the sports courts lights, which would extend approximately 20 feet high. These poles would be visible around the perimeter of the courts during daytime hours. However, due to their slender, vertical appearance, they would not be of such physical prominence that their presence would significantly affect a scenic vista. In addition, the sports courts would be located adjacent to Tassajara Road and proposed lights would be consistent in visual character with existing street lighting. Construction activities would be visible from adjacent uses and public roadways. However, the equipment required for construction would only be visible temporarily. The Eastern Dublin EIR determined that implementation of the Eastern Dublin Specific Plan would alter the character of existing scenic vistas and potentially obscure important sightlines (Impact 3.8/I). With implementation of Mitigation Measure 3.8/7.0, which requires the City to preserve views of designated open space areas and to complete a visual assessment and guidelines for the Eastern Dublin area, this impact was reduced to a less‐than‐significant level. The proposed project would include development of park improvements in the same location as was previously analyzed in the Dublin Ranch West SEIR and the 2014 Addendum. As described above, upon completion, project elements would be at grade or low‐standing (e.g., up to 20 feet tall). The mitigation measures identified in the Eastern Dublin EIR and the visual policies in the Eastern Dublin Specific Plan would apply to the proposed project. Therefore, impacts associated with the proposed project would not result in new impacts to scenic vistas or substantially increase the severity of impacts analyzed in the prior environmental documents. No additional analysis is required. (b) Scenic resources No New Impact. No designated State scenic highways are located near the project site. The nearest eligible State scenic highway to the project area is I‐580, which is approximately 1.7 miles south of the project site. However, Tassajara Road, which borders the site to the east has been designated as a scenic route by Alameda County. Implementation of the project would not substantially damage scenic resources within view of a scenic route. The majority of improvements would be at‐grade and would not impair scenic views and the natural vegetation associated with Tassajara Creek would be preserved. New landscaping and turf areas would be provided as part of project improvements. The Eastern Dublin EIR determined that implementation of the Eastern Dublin Specific Plan had the potential to alter visual resources along scenic routes, including Tassajara Road (Impact 345 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 18 3.8/J). With implementation of Mitigation Measure 3.8/8.0 and 8.1 which requires the City to adopt scenic corridor policies and review procedures for projects within the scenic corridor viewshed and to require a detailed visual analysis for projects with potential impacts on scenic corridors, this impact was determined to be less than significant. The proposed project would include development of park improvements in the same location as was previously analyzed in the Dublin Ranch West SEIR and the 2014 Addendum. No substantial damage to scenic resources within a scenic corridor would occur as a result of implementation of the proposed project. The mitigation measures identified in the Eastern Dublin EIR and the visual policies in the Eastern Dublin Specific Plan would apply to the proposed project. Therefore, impacts associated with the proposed project would not result in new impacts to scenic routes or substantially increase the severity of impacts analyzed in the prior environmental documents. No additional analysis is required. (c) Substantially degrade the visual character of public views of the site or surrounding area No New Impact. Goals and policies in the Eastern Dublin Specific Plan promote the preservation of the City’s rural and natural character and the regulation of development in rural areas. The project site is located in an area designated for park uses and surrounded by residential development and undeveloped open space areas. Implementation of the proposed project would provide a park to serve this residential area. Development of the proposed project would change the existing visual character of the project area and vicinity by developing the existing vacant land into a community park. The proposed project would result in the development of public open space areas, including walkways, picnic areas, recreation facilities (e.g., courts, play areas), and landscaping, enhancing the visual character of the project site. Proposed improvements would generally be at‐grade or low‐ standing. The proposed project would preserve existing visual features on the project site (e.g., sculpture at the intersection of Tassajara Road and Rutherford Drive, Tassajara Creek riparian corridor) and provide new visual elements (e.g., entries, landscaping) to enhance and complement park improvements. As described above, the Eastern Dublin EIR determined that the substantial alteration of the existing rural and open space qualities that characterize Eastern Dublin (Impact 3.8/B) would result in a significant unavoidable impact despite implementation of Mitigation Measure 3.8/2. The proposed project would include development of a community park on the same site as was previously analyzed in the Dublin Ranch West SEIR and the 2014 Addendum. The proposed project would preserve the Tassajara Creek corridor, consistent with the requirements of the conservation easement and would improve the visual quality and character of the project area through development of recreation improvements and open space areas. Therefore, impacts associated with the proposed project would not result in new impacts or substantially increase 346 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 19 the severity of impacts analyzed in the prior environmental documents. No additional analysis is required. (d) Create a new source of substantial light or glare No New Impact. Streetlights, vehicle head and taillights on area roadways, and lighting associated with adjacent development are the existing sources of light and glare in the vicinity of the project site. The proposed project would include development of a community park on an existing undeveloped site. Park hours would be from dawn until dusk, with courts with lighting having extended hours until 10:00 p.m. Lights would be placed on a timed controller and would not be used past the hour of 10:00 p.m. Chapter 8.40 of the City of Dublin Municipal Code requires that court lighting shall not exceed a maximum height of 20 feet and lighting shall be shielded or recessed so that light, glare, and reflections are confined to the maximum extent feasible within the boundaries of the site. Consistent with the policies outlined in the City’s Municipal Code, each light fixture would be directed downward and away from adjoining properties, so that no on‐site light fixture would directly illuminate any off‐site areas. Further, proposed lighting would be confined to a small area of the park, adjacent to Tassajara Road and away from existing residential development. Light and glare impacts were not identified in the Eastern Dublin EIR; however, the Initial Study for the Dublin Ranch West SEIR determined that additional light sources associated with development (e.g., streetlights, building and security lighting) would be less than significant. Consistent with the findings of the prior environmental documents, the proposed project would be required to comply with the City development requirements and standard conditions of approval as part of the review process to prevent light spillover from the project site. With adherence to these requirements, the proposed project would not create a new source of substantial light or glare, which would adversely affect day or nighttime views in the area. No new impacts or substantially more severe significant impacts would result with implementation of the proposed project. No additional analysis is required. Source(s) California Department of Transportation. 2018. California Scenic Highway Mapping System. Website: dot.ca.gov/programs/design/lap‐landscape‐architecture‐and‐community‐ livability/lap‐liv‐i‐scenic‐highways (accessed February 16, 2021). Dublin, City of. 2017. City of Dublin General Plan, Adopted February 11, 1985 (Amended as of November 21, 2017). Haag, Jerry. 2004. Dublin Ranch West Project, Final Supplemental Environmental Impact Report. November. Haag, Jerry. 2014. Wallis Ranch/Trumark Project PLPA 2013‐00035, Initial Study. April 22. 347 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 20 Wallace Roberts & Todd. 2016. Eastern Dublin Specific Plan. January 7, 1994 (Updated September 20, 2016). Wallace Roberts & Todd. 1992. Final Environmental Impact Report, State Clearinghouse Number 91103064m Eastern Dublin General Plan Amendment and Specific Plan. December 7. 348 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 21 Agricultural and Forestry Resources ENVIRONMENTAL IMPACTS Issues Potentially Significant Issues Potentially Significant Unless Mitigation Incorporated Less Than Significant Impact No New Impact 2. AGRICULTURE RESOURCES. In determining whether impacts to agricultural resources are significant environmental effects, lead agencies may refer to the California Agricultural Land Evaluation and Site Assessment Model (1997) prepared by the California Department of Conservation as an optional model to use in assessing impacts on agriculture and farmland. Would the project: a. Convert Prime Farmland, Unique Farmland, or Farmland of Statewide Importance (Farmland), as shown on the maps prepared pursuant to the Farmland Mapping and Monitoring Program of the California Resources Agency, to non‐agricultural use? X b. Conflict with existing zoning for agricultural use, or a Williamson Act contract? X c. Involve other changes in the existing environment which, due to their location or nature, could result in conversion of Farmland to non‐agricultural use or conversion of forest land to non‐forest use? X d. Result in the loss of forest land or conversion of forest land to non‐forest use? X e. Involve other changes in the existing environment which, due to their location or nature, could result in conversion of Farmland, to non‐agricultural use or conversion of forest land to non‐forest use? X Environmental Setting The project site is not used for agricultural production and is not designated Prime Farmland, Unique Farmland, or Farmland of Statewide Importance on maps prepared pursuant to the Farmland Mapping and Monitoring Program of the California Resources Agency. The surrounding area is characterized by residential uses. The Farmland Mapping and Monitoring Program categorizes the project site as Grazing Land. Grazing Land is defined as land on which the existing vegetation is suited to the grazing of livestock. No forest land exists on the project site; however, riparian woodland is located within the Tassajara Creek corridor that bisects the project site. 349 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 22 Regulatory Framework State Regulations California Department of Conservation Farmland Mapping and Monitoring Program The California Department of Conservation (DOC) manages the Farmland Mapping and Monitoring Program to assess the location, quality, and quantity of agricultural lands and conversion of these lands over time. In each county, the land is analyzed for soil and irrigation quality, and the highest quality land is designated as Prime Farmland, Unique Farmland, or Farmland of Statewide Importance. Based on the results of these analyses, the DOC issues maps every two years with the use of a computer mapping system, aerial imagery, public review, and field reconnaissance. Williamson Act The Williamson Act, also known as the California Land Conservation Act of 1965, enables local governments and private landowners to enter into contracts that restrict specific parcels of land to agricultural or related open space use. As a result, landowners receive reduced property tax assessments because they are based upon farming and open space uses rather than market value. Local Regulations City of Dublin General Plan Section 7.6 of the General Plan outlines policies and programs related to agricultural lands. The following policies related to agriculture are applicable to the proposed project: Guiding Policy 7.6.1.A.1. Prevent the premature urbanization of agricultural lands. Implementing Policy 7.6.1.B.1. Approval of urban development shall require findings that the land is suitable for the proposed use and will have adequate urban services and that conversion to an urban use will not have significant adverse effects on adjoining lands remaining under Williamson Act contract. Eastern Dublin Specific Plan Section 6.2 of the Eastern Dublin Specific Plan outlines policies and programs related to open space. The following policies related to agriculture are applicable to the proposed project: Policy 6‐2: Locate development so that large, continuous open space areas/corridors are preserved. Avoid creating open space islands. Encourage single loaded streets in areas adjacent to open space, rural residential, and agricultural lands. 350 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 23 Policy 6‐7: All Rural Residential/Agriculture (RR/A) areas shall be kept primarily undeveloped. If possible, allowable development in these areas should be transferred to other residential development areas and the future use of the land restricted to open space uses. If development does occur within RR designated areas, it should be located in the least visible portion of the development site and situated to preserve the area's value as open space and wildlife habitat. Previous CEQA Documents Eastern Dublin EIR The Eastern Dublin EIR identified less than significant impacts related to discontinuation of agricultural uses, loss of farmlands of local importance, indirect impacts resulting from non‐ renewal of Williamson Act contracts, and conversion of non‐urban lands. Although the Eastern Dublin EIR determined that the loss of agricultural uses within the Eastern Dublin Area was less than significant, the Eastern Dublin EIR identified the cumulative loss of agricultural lands and open space as a significant unavoidable impact and adopted a Statement of Overriding Considerations for this impact. Dublin Ranch West SEIR Agricultural resources were addressed in Chapter 4.1 of the Dublin Ranch West SEIR. No additional significant impacts to agricultural resources were identified. 2014 Addendum No new or more severe impacts related to agricultural resources than were previously analyzed in the prior environmental documents were identified in the 2014 Addendum. The 2014 Addendum determined that the Wallis Ranch/Trumark Project would continue to contribute to cumulative loss of agricultural land and open space, which was identified as a significant and unavoidable impact in the Eastern Dublin EIR (Impact 3.1/F). Project Impacts and Mitigation Measures (a) Convert Prime Farmland, Unique Farmland, or Farmland of Statewide Importance (farmland) No New Impact. As described above, the project site is not used for agricultural production and is not designated Prime Farmland, Unique Farmland, or Farmland of Statewide Importance Therefore, the proposed project would not convert Prime Farmland, Unique Farmland, Farmland of Statewide Importance, or any other type of farmland to non‐agricultural uses. No new impacts or substantially more severe significant impacts to Prime Farmland, Unique Farmland, or Farmland of Statewide Importance would occur. No additional analysis is required. 351 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 24 (b) Conflict with existing zoning for agricultural use or a William Act contract No New Impact. The project site is currently classified as Planned Development (PD) Ordinance No. 07‐03 on the City’s Zoning Map. The project site is not currently used for agricultural purposes, not zoned for agricultural uses, and is not protected by, or eligible for, a Williamson Act contract. Therefore, the proposed project would not conflict with existing zoning or Williamson Act contracts. No new or substantially more severe significant impacts to farmland or zoning beyond what has been analyzed in the prior environmental documents would occur. No additional analysis is required. (c) Conversion of land from Farmland or forest use No New Impact. As described above, the project site is zoned is currently classified as Planned Development (PD) Ordinance No. 11‐14 and PD Ordinance No. 09‐15 on the City’s Zoning Map. Neither the project site nor the surrounding area is zoned for agricultural use, forest land, timberland, or timberland production. Therefore, no new or substantially more severe significant impacts to farmland beyond what has been analyzed in the prior environmental documents would occur. No additional analysis is required. (d) Result in loss of forest land or conversion of forest No New Impact. No forest or timberland exists on the project site or in the surrounding area. Therefore, the proposed project would not result in the loss of forest land or the conversion of forest land to non‐forest use. Therefore, no new or substantially more severe significant impacts to forest land beyond what has been analyzed in the prior environmental documents would occur. No additional analysis is required. (e) Conversion of Farmland, to non‐agricultural use or conversion of forest land to non‐forest use No New Impact. None of the project parcels are currently used as farmland or forest land. The proposed project would not result in the conversion of farmland on or off the project site to non‐agricultural uses because there are no agricultural uses on or in the immediate vicinity of the project site. Likewise, the proposed project would not result in impacts related to changes in the existing environment that could result in the conversion of agricultural land to non‐ agricultural uses. Therefore, no new or substantially more severe significant impacts related to conversion of farmland or forest land beyond what has been analyzed in the prior environmental documents would occur. No additional analysis is required. Source(s) California Department of Conservation (DOC). California Farmland Conservancy. California Important Farmland Finder. Website: maps.conservation.ca.gov/dlrp/ciff/ (accessed June 24, 2021). 352 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 25 Dublin, City of. 2017. City of Dublin General Plan, Adopted February 11, 1985 (Amended as of November 21, 2017). Haag, Jerry. 2004. Dublin Ranch West Project, Final Supplemental Environmental Impact Report. November. Haag, Jerry. 2014. Wallis Ranch/Trumark Project PLPA 2013‐00035, Initial Study. April 22. Wallace Roberts & Todd. 2016. Eastern Dublin Specific Plan. January 7, 1994 (Updated September 20, 2016). Wallace Roberts & Todd. 1992. Final Environmental Impact Report, State Clearinghouse Number 91103064m Eastern Dublin General Plan Amendment and Specific Plan. December 7. 353 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 26 Air Quality ENVIRONMENTAL IMPACTS Issues Potentially Significant Issues Potentially Significant Unless Mitigation Incorporated Less Than Significant Impact No New Impact 3. AIR QUALITY. Where available, the significance criteria established by the applicable air quality management district or air pollution control district may be relied upon to make the following determinations. Would the project: a. Conflict with or obstruct implementation of the applicable air quality plan? X b. Result in a cumulatively considerable net increase of any criteria pollutant for which the project region is non‐ attainment under an applicable federal or state ambient air quality standard? X c. Expose sensitive receptors to substantial pollutant concentrations? X d. Result in other emissions (such as those leading to odors adversely affecting a substantial number of people? X Environmental Setting The proposed project is located in the City of Dublin, and is within the jurisdiction of the Bay Area Air Quality Management District (BAAQMD), which regulates air quality in the San Francisco Bay Area. Air quality conditions in the San Francisco Bay Area have improved significantly since the BAAQMD was created in 1955. Ambient concentrations of air pollutants and the number of days during which the region exceeds air quality standards have fallen substantially. In Dublin, and the rest of the air basin, exceedances of air quality standards occur primarily during meteorological conditions conducive to high pollution levels, such as cold, windless winter nights or hot, sunny summer afternoons. Within the BAAQMD, ambient air quality standards for ozone, carbon monoxide (CO), nitrogen dioxide (NO2), sulfur dioxide (SO2), particulate matter (PM10, PM2.5), and lead (Pb) have been set by both the State of California and the federal government. The State has also set standards for sulfate and visibility. The BAAQMD is under State non‐attainment status for ozone and particulate matter standards. The BAAQMD is classified as non‐attainment for the federal ozone 8‐hour standard and non‐attainment for the federal PM2.5 24‐hour standard. 354 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 27 Regulatory Framework Local and Regional Regulations Bay Area Air Quality Management District The BAAQMD seeks to attain and maintain air quality conditions in the San Francisco Bay Area Air Basin through a comprehensive program of planning, regulation, enforcement, technical innovation, and education. The clean air strategy includes the preparation of plans for the attainment of ambient air quality standards, adoption and enforcement of rules and regulations, and issuance of permits for stationary sources. The BAAQMD also inspects stationary sources and responds to citizen complaints, monitors ambient air quality and meteorological conditions, and implements programs and regulations required by law. The BAAQMD CEQA Air Quality Guidelines were prepared to assist in the evaluation of air quality impacts of projects and plans proposed within the Bay Area. The guidelines provide recommended procedures for evaluating potential air impacts during the environmental review process, consistent with CEQA requirements, and include recommended thresholds of signifi‐ cance, mitigation measures, and background air quality information. They also include recommended assessment methodologies for air toxics, odors, and greenhouse gas (GHG) emissions. The BAAQMD’s Clean Air Plan guides the region’s air quality planning efforts to attain the California ambient air quality standards. The BAAQMD 2017 Clean Air Plan, which was adopted on April 19, 2017, by the BAAQMD Board of Directors, is the current Clean Air Plan, which contains district‐wide control measures to reduce ozone precursor emissions (i.e., reactive organic gases [ROG] and nitrogen oxides [NOx]), particulate matter, and greenhouse gas emissions. City of Dublin General Plan Section 7.5 of the General Plan outlines policies and programs related to air quality. The following policies related to agriculture are applicable to the proposed project: Implementing Policy 7.5.1.A.2. Require an air quality analysis for new development projects that could generate significant air emissions on a project and cumulative level. Air quality analyses shall include specific feasible measures to reduce anticipated air quality emissions to a less‐than‐significant California Environmental Quality Act (CEQA) level. Previous CEQA Documents Eastern Dublin EIR The Eastern Dublin EIR identified potentially significant impacts related to dust and construction equipment/vehicle emissions during construction, mobile source emissions, and 355 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 28 stationary source emissions. Mitigation measures were identified to reduce all air quality impacts; however, even with implementation of mitigation, impacts associated with construction equipment/vehicle emissions, mobile source emissions and stationary source were determined to be significant and unavoidable. The following mitigation measures would apply to the proposed project: MM 3.11/1.0 The City of Dublin shall: Require watering in late morning and at the end of the day; the frequency of watering should increase if wind speeds exceed 15 miles per hour (mph). Watering should include all excavated and graded areas and material to be transported off‐ site. Use recycled or other non‐potable water resources where feasible. Require daily cleanup of mud and dust carried onto street surfaces by construction vehicles. Require excavation haul trucks to use tarpaulins or other effective covers. Require that, upon completion of construction, measures shall be taken to reduce wind erosion. Replanting and repaving should be completed as soon as possible Require that unnecessary idling of construction equipment is avoided. Require that, after grading is completed, fugitive dust on exposed soil surface shall be controlled using the following methods: □ All inactive portions of the construction site should be seeded and watered until grass growth is evident. □ Require that all portions of the site shall be sufficiently watered to prevent excessive amounts of dust. □ Require that, at all times, the following procedures should be followed: On‐site vehicle speed shall be limited to 15 mph. Use of petroleum‐based palliative shall meet the road oil requirements of the Air Quality District. Non‐petroleum‐based tackifiers may be required by the Public Works Director. The Public Works Department will handle dust complaints. The Public Works Director may require the services of an air quality consultant to advise the City of the severity of the dust problem and additional ways to mitigate 356 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 29 impacts on residents, including temporarily halting project construction. Dust concerns in adjoining communities, as well as the City of Dublin shall be controlled. Control measures shall be related to wind conditions. Air quality monitoring ONM levels shall be provided as directed by the Public Works Director in Dublin. MM 3.11/2.0 Minimize construction interference with regional non‐project traffic movement by: Scheduling receipt of construction materials to non‐peak travel periods. Routing construction traffic through areas of least impact sensitivity. Limiting lane closures and detours to off‐peak periods. Providing ride‐share incentives for contractor and subcontractor personnel. MM 3.11/3.0 Require emissions control from on‐site equipment through a routine mandatory program of low‐emissions tune‐ups. MM 3.11/4.0 Require preparation of a construction impact reduction plan that incorporates all proposed air quality mitigation strategies with clearly defined responsibilities for plan implementation and supervision. MM 3.11/12.0 Stationary source emissions associated with Project development should also be minimized where feasible to reduce overall cumulative impacts. Minimum energy conservation standards are established in Title 24 of the California Code of Regulations. Design practice can achieve a slightly greater level of conservation than the minimum standards. A conservation target level for some fraction of Eastern Dublin development of 10 percent above the minimum should be implementation as an appropriate acknowledgement of the desired “environmentally‐friendly” community character of the project. Dublin Ranch West SEIR The Dublin Ranch West SEIR determined that implementation of the Dublin Ranch West project would result in two potentially significant impacts associated with fugitive dust and particulate matter (PM10) during construction and an increase in regional emissions that would exceed BAAQMD significance thresholds for ozone precursors. The following supplemental mitigation measures were identified to reduce potential air quality impacts: Supplemental Mitigation Measure AQ‐1: In addition to the measures identified in MM 3.11/1.0 of the East Dublin EIR, the City of Dublin shall: 357 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 30 a) Require construction contractors to water or cover stockpiles of debris, soil, sand or other materials that can be blown by the wind. b) Require construction contractors to sweep daily (preferably with water sweepers) all paved access road, parking areas, and staging areas at construction sites. c) Require construction contractors to install sandbags or other erosion control measures to prevent silt runoff to public roadways. Supplemental Mitigation Measure AQ‐2: In addition to the measures identified in MM 3.11/5.0‐11.0 of the East Dublin EIR, the City of Dublin shall require that the following be implemented: a) The Project proponent should coordinate with LAVTA for the eventual extension of transit service to the Project site. The Project proponent should construct or reserve necessary right‐of‐way for transit facilities such as bus turnouts/bus bulbs, benches, etc. b) Provide bicycle land and/or paths, connected to community‐wide network. c) Provide sidewalks and/or paths, connected to adjacent land uses, transit stops, and/or community‐wide network. d) Consider shuttle service to regional transit system or multimodal center. e) Consider providing a satellite telecommute center for Project residents if this is feasible in terms of a convenient location. f) Provide interconnected street network, with a regular grid or similar interconnected street pattern. With implementation of Supplemental Mitigation Measure AQ‐1, impacts related to fugitive dust were determined to be less than significant; however, even with implementation of the mitigation measures in the Eastern Dublin EIR and Supplemental Mitigation Measure AQ‐2, ozone air quality impacts were determined to remain significant and unavoidable. 2014 Addendum The 2014 Addendum determined that no new or more severe impacts related to air quality would result from the Wallis Ranch/Trumark project. 358 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 31 Project Impacts and Mitigation Measures (a) Consistency with air quality plans No New Impact. The applicable air quality plan is the BAAQMD 2017 Clean Air Plan (Clean Air Plan), which was adopted on April 19, 2017. The Clean Air Plan is a comprehensive plan to improve Bay Area air quality and protect public health. The Clean Air Plan defines control strategies to reduce emissions and ambient concentrations of air pollutants; safeguard public health by reducing exposure to air pollutants that pose the greatest health risk, with an emphasis on protecting the communities most heavily affected by air pollution; and reduce greenhouse gas (GHG) emissions to protect the climate. Consistency with the Clean Air Plan can be determined if the project: (1) supports the goals of the Clean Air Plan; (2) includes applicable control measures from the Clean Air Plan; and (3) would not disrupt or hinder implementation of any control measures from the Clean Air Plan. Clean Air Plan Goals. The primary goals of the Bay Area Clean Air Plan are to attain air quality standards; reduce population exposure and protect public health in the Bay Area; and reduce GHG emissions and protect climate. The BAAQMD has established significance thresholds for project construction and operational impacts at a level at which the cumulative impact of exceeding these thresholds would have an adverse impact on the region’s attainment of air quality standards. The health and hazards thresholds were established to help protect public health. As discussed below, with implementation of the mitigation measures identified in the prior environmental documents, the proposed project would result in less‐than‐significant construction‐ and operation‐period emissions. Therefore, the project would not conflict with the Clean Air Plan goals. Clean Air Plan Control Measures. The control strategies of the Clean Air Plan include measures in the following categories: Stationary Source Measures, Transportation Measures, Energy Measures, Building Measures, Agriculture Measures, Natural and Working Lands Measures, Waste Management Measures, Water Measures, and Super‐GHG Pollutants Measures. The project would result in the construction of a community park to serve the adjacent residential neighborhood. Therefore, the Stationary Source, Energy Control, Building Control, Agricultural Control, Natural and Working Lands Control, Water Control, and Super GHG Control Measures are not applicable to the proposed project. The BAAQMD identifies Transportation Control Measures as part of the Clean Air Plan to decrease emissions of criteria pollutants, toxic air contaminants (TACs), and GHGs by reducing demand for motor vehicle travel, promoting efficient vehicles and transit service, decarbonizing transportation fuels, and electrifying motor vehicles and equipment. The proposed project would result in the development of a new community park to serve the Wallis Ranch neighborhood. The proposed project would provide recreation and gathering space for this community. The proposed project is not expected to result in a significant increase in the 359 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 32 generation of vehicle trips or vehicle miles traveled (VMT). In addition, the project site is located within walking or bicycling distance from the surrounding residential area, and therefore would support the ability of visitors to use alternative modes of transportation. As such, the project would promote BAAQMD initiatives to reduce vehicle trips and VMT and would increase the use of alternate means of transportation. Furthermore, the proposed project would comply with local requirements for waste management (e.g., recycling and composting services), as applicable, and would therefore be consistent with the Waste Management Control Measures, which focus on reducing or capturing methane emissions from landfills and composting facilities, diverting organic materials away from landfills, and increasing waste diversion rates through efforts to reduce, reuse, and recycle. Clean Air Plan Implementation. As discussed above, the proposed project would generally implement the applicable measures outlined in the Clean Air Plan, including Transportation Control Measures. Therefore, the proposed project would not create new impacts or substantially more severe significant impacts related to clean air plan consistency than impacts analyzed in the prior environmental documents. No additional analysis is required. (b) Project emissions No New Impact. The following analysis assesses the potential construction‐ and operation‐ related air quality impacts and CO impacts of the proposed project. Construction Emissions. During construction activities, short‐term degradation of air quality may occur due to the release of particulate matter emissions (i.e., fugitive dust) generated by grading, clearing, and other activities. Emissions from construction equipment are also anticipated and would include CO, NOx, ROG, directly‐emitted particulate matter (PM2.5 and PM10), and toxic air contaminants (TACs), such as diesel exhaust particulate matter. Construction of the proposed project would include site clearing, slope stabilization, and rough grading, utilities and general site work, and final site preparation and paving. Construction‐ related effects on air quality are typically the greatest during the site preparation phase due to the disturbance of soils. If not properly controlled, these activities would temporarily generate particulate emissions. Sources of fugitive dust would include disturbed soils at the construction site. Unless properly controlled, vehicles leaving the site would deposit dirt and mud on local streets, which could be an additional source of airborne dust after it dries. Fugitive dust emissions (PM10) would vary from day to day, depending on the nature and magnitude of construction activity and local weather conditions. PM10 emissions would depend on soil moisture, silt content of soil, wind speed, and the amount of operating equipment. Larger dust particles would settle near the source, while fine particles would be dispersed over greater distances from the construction site. Water or other soil stabilizers can be used to control dust, resulting in emission reductions of 50 percent or more. Implementation of mitigation measures 360 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 33 MM 3.11/1.0 identified in the Eastern Dublin EIR and Supplemental Mitigation Measure AIR‐1 identified in the Dublin Ranch West SEIR would reduce fugitive dust emissions from construction activities to a less‐than‐significant level. In addition to dust‐related PM10 emissions, heavy trucks and construction equipment powered by gasoline and diesel engines would generate CO, SO2, NOx, VOCs and some soot particulate (PM2.5 and PM10) in exhaust emissions. If construction activities were to increase traffic congestion in the area, CO and other emissions from traffic would increase slightly while those vehicles idle in traffic. These emissions would be temporary in nature and limited to the immediate area surrounding the construction site. The BAAQMD has developed screening criteria to provide lead agencies with a conservative indication of whether a proposed project would result in potentially significant air quality impacts. If all of the screening criteria are met by a proposed project, then the lead agency would not need to perform a detailed air quality assessment of the proposed project’s emissions. These screening levels are generally representative without any form of mitigation measures taken into consideration. In addition, the screening criteria do not account for project design features, attributes, or local development requirements that could also result in lower emissions. For park land uses, the BAAQMD screening size for construction criteria pollutants is 67 acres. Since the total project site is approximately 9 acres, based on the BAAQMD’s screening criteria, construction activities associated with the proposed project are not anticipated to exceed established thresholds and this impact would be less than significant. Operation Emissions. Long‐term air pollutant emission impacts are those associated with mobile sources (e.g., vehicle trips), energy sources (e.g., electricity and natural gas), and area sources (e.g., architectural coatings and the use of landscape maintenance equipment) related to the proposed project. As discussed above, the BAAQMD has developed screening criteria to determine whether a project requires an analysis of project‐generated criteria air pollutants. If all the screening criteria are met by a proposed project, then the lead agency does not need to perform a detailed air quality assessment. For park land uses, the BAAQMD screening size for operational criteria pollutants is 2,613 acres. Since the total project site is approximately 9 acres, based on the BAAQMD’s screening criteria, the potential increase in intensity of use on the site is not anticipated to exceed established thresholds. Therefore, the proposed project would not result in a cumulatively considerable net increase of any criteria pollutant for which the project region is in nonattainment under an applicable federal or State ambient air quality standard. 361 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 34 With adherence to MM 3.11/1.0 identified in the Eastern Dublin EIR and Supplemental Mitigation Measure AIR‐1 identified in the Dublin Ranch West SEIR, there would be no new or substantially more severe significant impacts related to project emissions beyond what has been analyzed in the prior environmental documents. No additional analysis is required. (c) Expose sensitive receptors to pollutant concentrations No New Impact. Sensitive receptors are defined as residential uses, schools, daycare centers, nursing homes, and medical centers. Individuals particularly vulnerable to diesel particulate matter are children, whose lung tissue is still developing, and the elderly, who may have serious health problems that can be aggravated by exposure to diesel particulate matter. Exposure from diesel exhaust associated with construction activity contributes to both cancer and chronic non‐cancer health risks. Surrounding land uses include residential development to the north, undeveloped open space to the west and south, and Tassajara Road, residential development, and Quarry Lane School to the east. The closest sensitive receptors to the proposed project include the single‐family residences associated with the Wallis Ranch community located immediately north of the project site and single‐family residences and Quarry Lane School to the east. Construction of the proposed project may expose surrounding sensitive receptors to airborne particulates, as well as a small quantity of construction equipment pollutants (i.e., usually diesel‐fueled vehicles and equipment). However, construction contractors would be required to implement MM 3.11/1.0 through MM 3.11/4.0 identified in the Eastern Dublin EIR, as well as Supplemental Mitigation Measure AIR‐1 identified in the Dublin Ranch West SEIR described above, to reduce construction‐related impacts. With implementation of these mitigation measures, project construction pollutant emissions would be below the BAAQMD significance thresholds. Once the project is constructed, the project would not be a source of substantial pollutant emissions. Therefore, sensitive receptors are not expected to be exposed to substantial pollutant concentrations during project construction and operation. No new impacts or substantially more severe significant impacts related to pollutant concentrations would occur. No additional analysis is required. (d) Odors No New Impact. During project construction, some odors may be present due to diesel exhaust. However, these odors would be temporary and limited to the construction period. The proposed project would not include any activities or operations that would generate objectionable odors and once operational, the project would not be a source of odors. Therefore, the proposed project would not result in other emissions (such as those leading to odors) adversely affecting a substantial number of people. No new impacts or substantially more severe significant impacts related to odors would occur. No additional analysis is required. 362 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 35 Source(s) BAAQMD. 2017. Final 2017 Clean Air Plan. April 19. Website: www.baaqmd.gov/~/media/files/planning‐and‐research/plans/2017‐clean‐air‐ plan/attachment‐a_‐proposed‐final‐cap‐vol‐1‐pdf.pdf?la=en (accessed June 27, 2021). Dublin, City of. 2017. City of Dublin General Plan, Adopted February 11, 1985 (Amended as of November 21, 2017). Haag, Jerry. 2004. Dublin Ranch West Project, Final Supplemental Environmental Impact Report. November. Haag, Jerry. 2014. Wallis Ranch/Trumark Project PLPA 2013‐00035, Initial Study. April 22. Wallace Roberts & Todd. 2016. Eastern Dublin Specific Plan. January 7, 1994 (Updated September 20, 2016). Wallace Roberts & Todd. 1992. Final Environmental Impact Report, State Clearinghouse Number 91103064 Eastern Dublin General Plan Amendment and Specific Plan. December 7. 363 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 36 Biological Resources ENVIRONMENTAL IMPACTS Issues Potentially Significant Issues Potentially Significant Unless Mitigation Incorporated Less Than Significant Impact No New Impact 4. BIOLOGICAL RESOURCES. Would the project: a. Have a substantial adverse effect, either directly or through habitat modifications, on any species identified as a candidate, sensitive, or special‐status species in local or regional plans, policies, or regulations, or by the California Department of Fish and Wildlife or U.S. Fish and Wildlife Service? X b. 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 California Department of Fish and Wildlife or U.S. Fish and Wildlife Service? X c. Have a substantial adverse effect on state or federally protected wetlands (including, but not limited to, marsh, vernal pool, coastal, etc.) through direct removal, filling, hydrological interruption, or other means? X d. 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? X e. Conflict with any local policies or ordinances protecting biological resources, such as a tree preservation policy or ordinance? X f. Conflict with the provisions of an adopted Habitat Conservation Plan, Natural Community Conservation Plan, or other approved local, regional, or state habitat conservation plan? X Environmental Setting The project site consists of approximately 9 acres of vacant land in Eastern Dublin. Tassajara Creek bisects the site. As outlined in the Project Description, a conservation easement has been established on both sides of the creek to protect its value for open space, storm drainage facilities, and water quality treatment. No park improvements would be constructed within the riparian corridor in compliance with the conservation easement. 364 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 37 Regulatory Framework Federal and State Regulations Federal and State Special Status Species Special status species are individual plant and animal species that are protected under federal and State Endangered Species Acts. These species are classified as rare, threatened, or endangered. The United States Fish and Wildlife Service (USFWS) and the California Department of Fish and Wildlife (CDFW) have adopted a system to conserve and protect plant and animal species that are limited in distribution as well as species that have a low or declining population. If a proposed project or activities associated with a proposed project result in the “take” of a threatened or endangered species, the necessary permits must be obtained from the USFWS and CDFW. The State of California defines take as any action or attempt to “hunt, pursue, catch, capture, or kill” a listed species. Additionally, the Federal Endangered Species Act includes the “harm” of a listed species in the definition of take. Section 15380(b) of the State CEQA Guidelines also considers all potential rare or sensitive species and habitats that are capable of supporting such species in addition to those species listed under the federal and state Endangered Species Acts. These additional species considered under CEQA may include California plant species of concern as listed by the California Native Plant Society as well as “Species of Special Concern” listed by CDFW. Sensitive Habitats Wetland and riparian habitats are considered to be sensitive habitats, and are protected under various Federal, State, and local regulations. These habitats are generally subject to regulation, protection, or consideration by the U.S. Army Corps of Engineers (USACE), Regional Water Quality Control Board (RWQCB), CDFW, and/or the USFWS as per Sections 303, 304, and 404 of the Federal Clean Water Act and the State of California Porter‐Cologne Water Quality Control Act. Wetland and riparian habitats are also subject to the National Pollutant Discharge Elimination System (NPDES) permit program under Section 402 of the Clean Water Act, which regulates discharge into waters of the United States. Federal Migratory Bird Treaty Act Under the federal Migratory Bird Treaty Act (MBTA), the killing, possessing, or trading of migratory birds is prohibited unless exempt by regulations prescribed by the Secretary of the Interior. The MBTA prohibits the possession of protected bird species and their nests, regardless of whether nests are active.2 2 An active nest is defined as having eggs or young. 365 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 38 Birds of prey, such as owls and hawks, are protected in California under provisions of the State Fish and Game Code. The code states that it is “unlawful to take, possess, or destroy any birds in the order Falconiformes or Strigiformes (birds of prey) or to take, possess, or destroy the nest or eggs of any such bird except as otherwise provided by this code or any regulation adopted pursuant thereto.” Construction disturbance during the breeding season could result in the incidental loss of fertile eggs or nestlings, or otherwise lead to nest abandonment. Disturbance that causes nest abandonment and/or loss of reproductive effort is considered “taking” by the CDFW. California Department of Fish and Game Code 3503 California Department of Fish and Game Code 3503 stipulates that is unlawful to take, posses, or needlessly destroy the nest or eggs of any bird, except as otherwise provided by this code or any regulation made pursuant thereto. Regional and Local Regulations East Alameda Conservation Strategy The project site is located in the East Alameda Conservation Strategy (Conservation Strategy) Study Area. The Conservation Strategy is intended to provide an effective framework to protect, enhance, and restore natural resources in eastern Alameda County, while improving and streamlining the environmental permitting process for impacts resulting from infrastructure and development projects. The City of Dublin is a partner in the Conservation Strategy and uses the document to provide a baseline inventory of biological resources and conservation priorities during project‐level planning and environmental permitting. City of Dublin General Plan Section 3.2 of the General Plan outlines policies for preservation of open space areas to protect natural resources, as well as public health and safety. Sections 7.2 and 7.4 of the General Plan outlines policies and programs related to stream corridors and riparian vegetation, and oak woodlands, respectively. The following policies related to biological resources are applicable to the proposed project: Guiding Policy 3.2.1.A.1. Preservation of oak woodlands, riparian vegetation, and natural creeks as open space for the natural resource value is of the highest importance. Limited modifications may be permitted on a case‐by‐case basis with adequate mitigation to replace disturbed resources. Guiding Policy 3.2.1.A.2. Generally, maintain slopes over thirty percent as permanent open space for public health and safety. Consider development in areas with slopes over 30 percent only if the area to be developed is: 1) less than three acres in size; 2) less 366 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 39 than 20 percent of a large developable area; and, 3) surrounded by slopes less than 30 percent. Implementing Policy 3.2.1.B.2. Encourage an efficient and higher intensity use of the flat and gently sloping portions of the planning area as a means of minimizing grading requirements and potential impacts to environmental and aesthetic resources. Guiding Policy 7.2.1.A.1. Protect riparian vegetation as a protective buffer for stream quality and for its value as a habitat and aesthetic resource. Guiding Policy 7.2.1.A.2. Promote access to stream corridors for passive recreational use and to allow stream maintenance and improvements as necessary, while respecting the privacy of owners of property abutting stream corridors. Implementing Policy 7.2.1.B.1. Enforce Watercourse Ordinance 52‐87 for developed areas of the city. Implementing Policy 7.2.1.B.2. Require open stream corridors of adequate width to protect all riparian vegetation, improve access, and prevent flooding caused by blockage of streams. Implementing Policy 7.2.1.B.3. Require revegetation of creek banks with species characteristic of local riparian vegetation, where construction requires creekbank alteration. Guiding Policy 7.4.1.A.1. Protect oak woodlands. Implementing Policy 7.4.1.B.1. Require preservation of oak woodlands. Where woodlands occupy slopes that otherwise could be graded and developed, permit allowable density to be transferred to another part of the site. Removal of an individual oak tree may be considered through the project review process. Implementing Policy 7.4.1.B.2. Enact and enforce the Heritage Tree Ordinance. Eastern Dublin Specific Plan Chapter 6.3 of the Eastern Dublin Specific Plan outlines the goals and policies to protect natural resources, including habitat areas and drainage ways, ridgelands and slopes over 30 percent and views. According to Section 6.3.1 of the Eastern Dublin Specific Plan, watercourses are to be preserved in open space corridors, and enhancement and stabilization will enhance the streams’ natural functions. The Eastern Dublin Specific Plan includes the following policies to address protection and preservation of stream corridors and wetlands: 367 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 40 Policy 6‐9: Natural stream corridors, ponds, springs, seeps, and wetland areas, as shown in Figure 6.2, shall be preserved wherever possible. Prior to submittal of development applications, the appropriate agencies such as the California Department of Fish and Game and the Army Corps of Engineers must be consulted to determine whether they have jurisdiction over the watercourse or wetland area. Policy 6‐10: Riparian and wetland areas shall be incorporated into greenbelt and open space areas as a means of preserving their hydrologic and habitat value. Unavoidable loss of riparian habitat due to development should be replaced with similar habitat on a 3:1 in kind basis. Loss of wetlands must be mitigated consistent with the COE's current policy. Policy 6‐12: Maintain natural open stream channels to carry storm runoff wherever feasible, rather than replacing with underground storm drainage systems. When extra capacity is necessary, retention basins are preferable to channelization, if the channelization would disturb riparian habitat. When channelization is necessary, the channel should be designed and constructed to accommodate both the projected flows and the growth of riparian vegetation, and to have more natural‐appearing contours. Flood control maintenance practices will be designed and performed to be responsive to public safety while preserving the unique riparian community. Maintenance agreements (memoranda of understanding) between the City and responsible agencies will address, but not be limited to, site access, criteria for determining the need for maintenance (i.e. assessment and monitoring), and the timing and frequency of actual maintenance practices. Policy 6‐13: Establish a stream corridor system (see Figure 6.1), which provides multipurpose open space corridors capable of accommodating wildlife all pedestrian circulation. In order to facilitate the use of these corridors by both humans and wildlife, human activities (e.g., trails) should be limited to one side of the stream. Policy 6‐14: Enhance public enjoyment and visibility of stream corridors by avoiding, or minimizing, development that backs directly onto the stream corridor, and ensure safe public access to stream corridors by providing frequent access points within each development area. As described in Section 6.3.2 of the Eastern Dublin Specific Plan, Eastern Dublin contains a range of vegetation/habitat types, including non‐native grasslands, alkali grasslands, northern riparian forest, arroyo willow riparian woodland, freshwater marsh, springs, seeps and water impoundments, and disturbed/developed areas. The Eastern Dublin Specific Plan includes the following policies to address protection and preservation of biological resources: 368 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 41 Policy 6‐15: Avoid development and potentially destructive activities in areas with high‐value habitat including: northern riparian forest, arroyo willow riparian woodland, freshwater marsh. Exceptions may only be granted where an owner's reasonable beneficial use of the land cannot be otherwise provided. Policy 6‐16: To ensure long‐term protection, high‐ value habitat areas either should be dedicated as public open space or restricted from potentially harmful development and activities with deed restrictions and design standards. Policy 6‐17: Impacts to sensitive wildlife species that occur in the planning area will be avoided wherever possible. Mitigation programs will be required as necessary to reduce or eliminate impacts on special status species. Policy 6‐18: Development in the planning area will be designed to maintain contiguous areas of natural open space interconnected by functional wildlife corridors that permit the free movement of wildlife throughout the open space areas. As a means of preserving wildlife corridors, duster development is generally preferable to an even lo low density sprawl over an entire area. Policy 6‐21: Direct disturbance or removal of trees or native vegetation cover should be minimized and should be restricted to those areas actually designated for the construction of improvements. Policy 6‐22: All areas of disturbance should be revegetated as quickly as possible to prevent erosion. Native trees (preferably those species already on site), shrubs, herbs, and grasses should be used for revegetation of areas to remain as natural open space. The introduction of non‐native plant species should be avoided. Previous CEQA Documents Eastern Dublin EIR The Eastern Dublin EIR identified potentially significant impacts related to habitat loss, indirect habitat loss due to vegetation removal for construction and development activities, and loss or degradation of sensitive habitat. The Eastern Dublin EIR also identified potentially significant impacts related to special‐status wildlife, including San Joaquin kit fox, California red‐legged frog (CRLF), California tiger salamander (CTS), western pond turtle, tri‐colored blackbird, Golden eagle, burrowing owl, American badger, special‐status invertebrates and others. Mitigation measures were identified to reduce significant impacts. One significant unavoidable impact was identified related to the cumulative loss of or degradation of botanically sensitive habitat. The following mitigation measures would apply to the proposed project: 369 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 42 MM 3.7/1.0 Direct disturbance or removal of trees or native vegetation cover should be minimized and be restricted to those areas actually designated for the construction of improvements. MM 3.7/5.0 All areas of disturbance should be revegetated as quickly as possible to prevent erosion. Native trees (preferably those species already on site), shrubs, herbs, and grasses should be used for revegetation of areas to remains as natural open space. The introduction of non‐native plant species should be avoided. MM 3.7/14.0 The City should enact and enforce an erosion and sedimentation control ordinance establishing performance standards to ensure maintenance of water quality and protection of stream channels. The ordinance should regulate grading and development activities adjacent to streams and wetland areas, and require revegetation of all ground disturbance immediately after construction to reduce erosion potential. Until such an ordinance is in place, the City shall require project applicants to provide a detailed erosion and sedimentation control plan as part of the project submittal. MM 3.7/16.0 Existing sensitive habitats shall be avoided and protected where feasible. MM 3.7/17.0 Construction near drainages shall take place during the dry season. MM 3.7/19.0 The use of rodenticides and herbicides within the Project area should be restricted to avoid impacts on wildlife. The City shall require any poisoning programs to be done in cooperation with and under supervision of the Alameda County Department of Agriculture. MM 3.7/20.0 The City shall require development applicants to conduct a pre‐ construction survey within 60 days prior to habitat modification (clearing construction and road site, etc.) to verify the presence of sensitive species, especially the San Joaquin kit fox, nesting raptors, the red‐legged frog, the western pond turtle, the California tiger salamander, the tri‐colored blackbird and other species of concern. MM 3.7/22.0 Maintain a minimum buffer (at least 100 feet) around breeding sites of the red‐legged frog, California tiger salamander and the Western pond turtle identify by MM 3.7/20.0. MM 3.7/27.0 Maintain a minimum buffer (at least 300 feet) around known or those identified by pre‐construction surveys (MM 3.7/20.0) nesting sites of the burrowing owl and breeding sites of the American badger during the breeding season to avoid direct loss of individuals (March – September). 370 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 43 Dublin Ranch West SEIR The Dublin Ranch West SEIR determined that implementation of the Dublin Ranch West project would result in potentially significant supplemental impacts to California tiger salamander, California red‐legged frog, breeding birds, bat species, burrowing owl, special‐status plants, riparian vegetation, and temporary loss of aquatic habitat. Supplemental mitigation measures were identified to reduce these impacts to a less than significant level. The following supplemental mitigation measures are applicable to the proposed project site: Supplemental Mitigation Measure BIO‐1: A CTS management plan shall be developed by the Project proponents, and approved by the CDFW and the USFWS, prior to construction activities. This measure shall also apply to construction of recreational trails in preserved areas. The Plan will detail how CTS will be managed before and during construction activities and will include the following: a) Installation of a temporary herpetological fence prior to any ground disturbance around the entire development footprint, which shall prevent CTS from entering the construction site and shall remain until the permanent fence or barrier is installed or the current one‐way barrier is extended and approved for use by the USFWS. A maintenance schedule shall be included for this fencing. b) A trapping and relocation plan that details how aestivating CTS individuals will be adequately relocated from the development footprint and into permanently preserved suitable aestivation habitat. Supplemental Mitigation Measure BIO‐2: A permanent herpetological fence or barrier shall be installed around the entire development footprint following construction activities to prevent movement of CTS into the development area. Such fencing shall be designed to allow for movement of larger terrestrial wildlife species, but shall preclude CTS from climbing the fence. With USFWS approval, the one‐way barrier currently in place may be extended to meet this mitigation requirement. Supplemental Mitigation Measure BIO‐6: A qualified biologist (as identified by the City) shall monitor construction activities to ensure protective measures are implemented and maintained (i.e., fencing is maintained, preserved areas are not disturbed, etc.). The biological monitor shall have the authority to suspend any and all construction activities if protective measures are not property followed and/or if activities pose an immediate threat to preserve sensitive resources. The biological monitor shall also have the authority to contact CDFW and/or the USFWS to report any mortality of listed species during construction. This measure shall also apply to construction of recreational trails in the preserved areas. 371 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 44 Supplemental Mitigation Measure BIO‐7: All project construction employees shall receive an educational training program that includes information on sensitive species identification and their potential habitat, approved mitigation measures for the project and actions employees should take if a sensitive species is encountered. This measure shall also apply to construction of recreational trails in preserved areas. Supplemental Mitigation Measure BIO‐9: The following construction‐related CRLF avoidance and protection measures shall be followed for development activities within the Project area: b) Prior to grading activities or any ground disturbance within upland habitats, and following installation of protective temporary construction fencing, a qualified biologist with appropriate authorization to handle CRLF shall conduct pre‐ construction surveys. If CRLF are found within the construction areas, they shall be immediately moved to undisturbed, preserved portions of Tassajara Creek if authorized in a biological opinion issued by the USFWS for the Project. This measure shall also apply to construction of recreational trails in preserved areas. Supplemental Mitigation Measure BIO‐10: Grading activities should take place during the dry season (as is practicable) since CRLF will be less likely to be present in upland areas during dry months of the year. Supplemental Mitigation Measure BIO‐11: Prior to any tree removal or ground disturbance, a qualified biologist (approved by the City) shall conduct breeding bird surveys through the Dublin Ranch West area and mark an appropriate buffer around any nests discovered. Buffers shall be a minimum of 250 feet for raptors (although sensitive raptors such as golden eagle may require a larger buffer), and between 50 and 100 feet for passerines depending on habitat type (50 feet in dense vegetation, 100 feet in open areas). Pre‐construction surveys shall take place throughout the development portion of Project area, including surveys for grassland birds and birds likely to nest along the Tassajara Creek corridor. Nesting status shall be monitored by a qualified biologist to determine when nests are no longer active. All activities shall be prohibited within the buffer until after young have fledged and moved out of the nest. This measure shall also apply to construction of recreational trails in preserved areas. Supplemental Mitigation Measure BIO‐12: Vegetation and tree removal shall take place (as much as practicable) outside of the breeding season for most birds (February – August is a broad breeding period that covers most species). This measure shall also apply to construction of recreational trails in preserved areas. 372 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 45 Supplemental Mitigation Measure BIO‐13: Surveys of potential roosting habitat including structures and large trees in the Tassajara Creek bridge crossing areas shall be conducted by a qualified biologist prior to any disturbance of potential roosting sites. If active roosts are discovered, bats would be excluded from those roosting locations by a qualified biologist prior to habitat removal (late summer‐early fall). This measure shall also apply to construction of recreational trails in preserved areas. Supplemental Mitigation Measure BIO‐14: The following pre‐construction survey, avoidance, and/or compensation measures shall be applied for impacts to burrowing owls (this measures shall also apply to construction of recreational trails in preserved areas): a) Pre‐construction surveys for burrowing owls shall be conducted by a qualified biologist prior to any ground disturbance between September 1 and January 31. If ground disturbance is delayed or suspended for more than 30 days after the survey, the site should be re‐surveyed. If no over‐wintering birds are present, burrows should be removed prior to the nesting season. If over‐wintering birds are present no disturbance should occur within 150 feet of occupied burrows. If owls must be moved away from the disturbance area during this period, passive relocation measures must be prepared according to current CDFW burrowing owl guidelines, approved by CDFW and completed prior to construction. b) If construction is scheduled during the nesting season (February 1 – September 1), pre‐construction surveys shall be conducted in the entire Dublin Ranch West area within 30 days prior to construction and within 250 feet of the Dublin Ranch West area prior to any ground disturbance. A minimum buffer (at least 250 feet) shall be maintained during the breeding season around active burrowing owl nesting sites identified in pre‐construction surveys to avoid direct loss of individuals. c) If destruction of occupied (breeding or non‐breeding season) burrows, or any burrow that were found to be occupied during pre‐construction surveys, is unavoidable, a strategy will be developed to replace such burrows by enhancing existing burrows or creating artificial burrows at a 2:1 ratio on permanently protected lands adjacent to occupied burrowing owl habitat, and will include permanent protection of a minimum of 6.5 acres of burrowing owl habitat per pair or unpaired resident owl. A plan shall be developed and approved by CDFW describing creation or enhancement of burrows, maintenance of burrows and management of foraging habitat, monitoring procedures and significance criteria, funding assurance, annual reporting requirements to CDFW, and contingency and remediation measures. 373 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 46 Supplemental Mitigation Measure BIO‐15: One acre of new occupied habitat for Congdonn’s tarplant shall be provided for every one acre of existing Congdon’s tarplant habitat within suitable, on‐site preserved habitat (such as the TCMZ). The project applicant shall develop and implement a detailed Mitigation and Monitoring plan to fully compensate for impacts to Congdon’s tarplant. The plan shall include the mitigation design, methods of salvage of existing seed, maintenance methods (including weed management), monitoring procedures and performance criteria, reporting requirements, and a contingency measure to preserve existing off‐site occupied Congdon’t tarplant habitat at an equal amount to lost habitat in case of mitigation failure. The project proponent shall provide a secure funding source (such as a performance bond) for the implementation of the mitigation plan and long‐term maintenance and monitoring of the mitigation area. The created mitigation area must be preserved in perpetuity (such as through a permanent conservation easement). The Mitigation and Monitoring Plan must be approved by the City prior to issuance of grading permits for the project. Mitigation shall require a minimum of five years of monitoring and annual monitoring reports shall be provided to the City. Supplemental Mitigation Measure BIO‐17: A Tree Removal and Preservation Plan that addresses all trees with a dripline that fall within any areas proposed for grading, including trees on the adjacent TCMZ shall be prepared by a qualified arborist or forester. The Plan shall provide detailed recommendations regarding tree removal and preservation methods, including protective fencing around the dripline of preserve trees, and shall be submitted to the City for review and acceptance prior to issuance of any project grading permits. Trees to be removed or protected shall be accurately and clearly delineated on all project grading plans, including a delineation of the dripline for preserved trees. 2014 Addendum The 2014 Addendum determined that no new or more severe impacts related to air quality would result from the Wallis Ranch/Trumark project with implementation of the mitigation measures identified in the Eastern Dublin EIR and the Dublin Ranch West SEIR. Project Impacts and Mitigation Measures (a) Substantial adverse effect on candidate, sensitive, or special status species No New Impact. The Eastern Dublin EIR and Dublin Ranch West SEIR document the presence of special‐status plant and wildlife species within the project vicinity and within the Tassajara Creek riparian corridor, which bisects the site. No park improvements would be constructed within the riparian corridor in compliance with the conservation easement. 374 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 47 The proposed park would be developed on three parcels that were designated for park use and evaluated for park development in the Eastern Dublin EIR and the Dublin Ranch West SEIR. Impacts associated with habitat loss and degradation of sensitive habitat have already been mitigated as part of development project approvals. As described above, the project site has been graded; therefore, limited habitat for special‐status species currently exists on the project site. However, if present during construction activities, special‐status species could be impacted by ground disturbance, vegetation removal, and other project construction activities. Mitigation measures are included in the Eastern Dublin EIR and Dublin Ranch West SEIR to reduce impacts to special‐status species to a less‐than‐significant level. With adherence to the mitigation measures identified in the Eastern Dublin EIR and Dublin Ranch West SEIR, no new or substantially more severe impacts with respect to candidate, sensitive, or special‐status species would occur than have been analyzed in the prior environmental documents. No additional analysis is required. (b) Substantial adverse effect on any riparian habitat or other natural community No New Impact. As described above, the Tassajara Creek riparian corridor bisects the site. No park improvements would be constructed within the riparian corridor in compliance with the conservation easement. Therefore, no new impacts or substantially more severe significant impacts related to riparian habitat would occur. No additional analysis is required. (c) Substantial adverse effect on wetlands No New Impact. As described above, the Tassajara Creek riparian corridor bisects the site. According to the Dublin Ranch West SEIR, areas of seasonal and perennial open space, as well as wetland areas vegetated by aquatic plants occur within the creek corridor. No park improvements would be constructed within the riparian corridor in compliance with the conservation easement. No other state or federally protected wetlands have been identified on the project site. Therefore, no new impacts or substantially more severe significant impacts related to wetlands would occur. No additional analysis is required. (d) Interfere or impede the movement of migratory fish or wildlife No New Impact. The project site is located in a largely urbanized area, bounded to the north and east by development. However, undeveloped open space occurs to the west and south. The primary wildlife movement corridor at the site is Tassajara Creek and its associated riparian habitat. Proposed improvements at the project, including sports courts, turf areas, dog park, restroom and other recreation facilities, are not expected to significantly impact existing movement of wildlife. Consistent with the mitigation measures identified in the Eastern Dublin EIR and Dublin Ranch West SEIR, the proposed development included the placement of biological barriers around the development area and along the riparian corridor to prevent the migration of some species onto the project site so as to prevent impacts to these species. No potential for bat maternity roosts to be present exists, as the site lacks trees and buildings that would provide roosting habitat for these species. Implementation of the proposed project 375 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 48 would disturb land designated for park use and evaluated for improvement as a park in the prior environmental documents and the types of facilities proposed are consistent with the types of park facilities anticipated for and evaluated as part of prior environmental review. Therefore, the proposed project would not interfere substantially with the movement of any native resident or migratory fish or wildlife species or with established native or resident migratory wildlife corridors or impede the use of native wildlife nursery sites. No new impacts or substantially more severe significant impacts would occur. No additional analysis is required. (e) Conflict with local policies or ordinance include tree preservation No New Impact. Heritage trees and approved street trees are protected under the Dublin Municipal Code, specifically Sections 7.56, Street Trees, and 5.60, Heritage Trees. As defined in the Dublin Municipal Code, approved street trees include: 1. Any tree planted within any street right‐of‐way or adjacent easement, which conforms to the approved streetscape master plan; 2. Any existing tree within the right‐of‐way or adjacent easement, which conforms to the established species and location in any given area, and which was planted as a required street tree under the provisions of any improvement agreement, or as otherwise approved by the City; or 3. Any tree of the approved species and in an acceptable location, which was or may be planted as a replacement. Heritage trees include any of the following: 1. Any oak, bay, cypress, maple, redwood, buckeye and sycamore tree having a trunk or main stem of twenty‐four (24) inches or more in diameter measured at four (4) feet six (6) inches above natural grade. 2. A tree required to be preserved as part of an approved development plan, zoning permit, use permit, site development review, or subdivision map; 3. A tree required to be planted as a replacement for an unlawfully removed tree. For private development projects, a permit is required from the City for the removal of any heritage tree and the removal/pruning of any approved street tree. In addition, for any property containing one or more heritage trees, a plan to protect heritage trees must be prepared and submitted to the City prior to the issuance of a demolition, grading, or building permit. Supplemental Mitigation Measure BIO‐17 identified in the Dublin Ranch West SEIR 376 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 49 requires preparation of a Tree Removal and Preservation Plan to be approved by the City prior to issuance of a grading permit. Implementation of the proposed project may require limited removal or disturbance of trees; including the removal of approximately 1 to 3 trees at the entry for the proposed parking area.. New trees would be planted as part of the proposed project, which would replace any trees to be removed. Therefore, the proposed project would not conflict with any local policies or ordinances protecting biological resources, such as a tree preservation policy or ordinance. No new impacts or substantially more severe significant impacts would occur. No additional analysis is required. (f) Conflict with adopted habitat conservation or natural community conservation plans No New Impact. The project site is not subject to any adopted habitat conservation plan or natural community conservation plan. Therefore, the proposed project would not conflict with the provisions of an adopted Habitat Conservation Plan, Natural Community Plan, or other approved local, regional, or State habitat conservation plan. No new impacts or substantially more severe significant impacts would occur. No additional analysis is required. Source(s) Dublin, City of. 2017. City of Dublin General Plan, Adopted February 11, 1985 (Amended as of November 21, 2017). Haag, Jerry. 2004. Dublin Ranch West Project, Final Supplemental Environmental Impact Report. November. Haag, Jerry. 2014. Wallis Ranch/Trumark Project PLPA 2013‐00035, Initial Study. April 22. Wallace Roberts & Todd. 2016. Eastern Dublin Specific Plan. January 7, 1994 (Updated September 20, 2016). Wallace Roberts & Todd. 1992. Final Environmental Impact Report, State Clearinghouse Number 91103064 Eastern Dublin General Plan Amendment and Specific Plan. December 7. 377 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 50 Cultural Resources ENVIRONMENTAL IMPACTS Issues Potentially Significant Issues Potentially Significant Unless Mitigation Incorporated Less Than Significant Impact No New Impact 5. CULTURAL RESOURCES. Would the project: a. Cause a substantial adverse change in the significance of a historical resource pursuant to CEQA Guidelines section 15064.5? X b. Cause a substantial adverse change in the significance of an archaeological resource pursuant to section 15064.5? X c. Disturb any human remains, including those interred outside of dedicated cemeteries? X Environmental Setting As described in the Dublin Ranch West SEIR, a field survey of the Eastern Dublin area was performed in 1988, which identified three potential prehistoric sites and two historic sites within the Dublin Ranch West project area. The 2014 Addendum identified one historic structure within the Wallis Ranch/Trumark project site. The Antone School Building was to be rehabilitated and incorporated into the Wallis Ranch/Trumark project. The project site is currently vacant; therefore, no historic built resources are present. The Eastern Dublin EIR identified three potential pre‐historic sites within the Dublin Ranch West project area; however, none of these resources were identified within the Wallis Ranch/Trumark project site, within which the proposed park is located. Regulatory Framework Federal and State Regulations National Register of Historic Places (National Register) The National Register lists the historic significance and the eligibility for qualifying for such significance for a building, structure, or other site. Significance eligibility is determined based on the quality and integrity of the resource and its association to American history, architecture, and culture. The resources must also possess one or more of the following characteristics: 1. It is associated with events that have made a significant contribution to the broad pattern of our history; or 2. It is associated with the lives of persons significant to our past; or 378 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 51 3. It embodies the distinctive characteristics of a type, period, or method of construction, or that represent the work of a master, or that possess high artistic values, or that represent a significant and distinguishable entity whose components may lack individual distinction; or 4. It yields, or may be likely to yield, information important in prehistory or history. California Register of Historical Resources (California Register) The California Register operates similarly to the National Register with almost the same structure for determining significance eligibility for potential historical resources. Generally, a resource is eligible for historical status under the California Register if it is greater than 50 years old as well as meets one or more of the following criteria: 1. It is associated with events that have made a significant contribution to the broad patterns of local or regional history, or the cultural heritage of California or the United States. 2. It is associated with the lives of persons important to local, California, or national history. 3. It embodies the distinctive characteristics of a type, period, region, or method of construction, or represents the work of a master or important creative individual, or possesses high artistic values. California Historical Landmarks California Historical Landmarks are sites, buildings, features, or events that are of Statewide significance and have anthropological, cultural, military, political, architectural, economic, scientific or technical, religious, experimental, or other value. To be eligible for designation as a California Historic Landmark, a resource must meet at least one of the following criteria: 1. The first, last, only, or most significant of its type in the state or within a large geographic region (Northern, Central, or Southern California). 2. Associated with an individual or group having a profound influence on the history of California. 3. A prototype of, or an outstanding example of, a period, style, architectural movement or construction or is one of the more notable works or the best surviving work in a region of a pioneer architect, designer or master builder. California Environmental Quality Act (CEQA) Historical resources are recognized as part of the environment under CEQA. The California Register is the authoritative guide to the State’s historical resources and to which properties are considered significant for the purposes of CEQA, including resources listed in or formally 379 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 52 determined eligible for listing in the National Register of Historic Places, as well as some California State Landmarks and Points of Historical Interest. Properties of local significance that have been designed under a local preservation ordinance (local landmarks or landmark district) or that have been identified in a local historical resources inventory may be eligible for listing in the California Register and are presumed to be significant resources for the purposes of CEQA unless a preponderance of evidence indicates otherwise. However, a resource does not need to have been identified previously either through listing or survey to be considered significant under CEQA. In addition to assessing whether historical resources potentially impacted by a project are listed or have been identified in a survey process, lead agencies have a responsibility to evaluate them against the California Register criteria prior to making a finding as to a proposed project’s impacts to historical resources. Public Resources Code Section 5097.5 California PRC Section 5097.5(a) mandates that one cannot, “knowingly and willfully” excavate, remove, or destroy any “historic or prehistoric ruins, burial grounds, archaeological or vertebrate paleontological site,” or “any other archaeological, paleontological or historical feature, situated on public lands, except with the express permission of the public agency having jurisdiction over the lands.” PRC Section 5097.5(b) defines public lands as those that are owned by or under the jurisdiction of any state or public authority or agency. Local Regulations City of Dublin General Plan The City of Dublin General Plan establishes the following guiding policy associated with cultural resources that is relevant to the proposed project: Guiding Policy 7.7.1.A.2: Follow State regulations as set forth in Public Resources Code Section 21083.2 regarding discovery of archaeological sites, and Historical Resources, as defined in Section 5020.1 of the Public Resources Code. Eastern Dublin Specific Plan Section 6.3.3 of the Eastern Dublin Specific Plan outlines policies and programs related to cultural resources. The following policies related to cultural resources are applicable to the proposed project: Policy 6‐24: The presence and significance of archaeological or historic resources will be determined, and necessary mitigation programs formulated, prior to development approvals for any of the sites identified in the cultural resource survey prepared for this plan. 380 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 53 Policy 6‐25: The discovery of historic or prehistoric remains during grading and construction will result in the cessation of such activities until the significance and extent of those remains can be ascertained by a certified archaeologist. Policy 6‐26: All properties with historic resources which may be impacted by future development shall be subjected to in‐depth archival research to determine the significance of the resource prior to any alteration. Policy 6‐27: Where the disruption of historic resources is unavoidable, encourage the adaptive re‐use or restoration of historic structures (such as the old school house, several barns, and Victorian residences currently in the area) whenever feasible. Previous CEQA Documents Eastern Dublin EIR The Eastern Dublin EIR identified potentially significant impacts related to the disruption or destruction of identified and unidentified prehistoric resources, and disruption or destruction of identified and unidentified historic resources. Mitigation measures were identified to reduce potential impacts to a less‐than‐significant level. The following mitigation measures would apply to the proposed project: MM 3.9/1.0 All locations of prehistoric resources will need a program of mechanical and/or hand subsurface testing to determine the presence or absence of midden deposits associated with the surface indictors of aboriginal presence. MM 3.9/2.0 All locations containing either midden components or concentrations of cultural materials located on the surface will be recorded on State of California site survey forms. The borders of any midden deposits or concentrations of cultural materials (other than single isolated artifact discoveries) will be staked so that accurate location maps can be produced by professional survey teams. MM 3.9/3.0 If it can be demonstrated that these recorded and mapped locations will be impacted in any manner by future construction or indirectly impacted as a result of increased access to the area, a plan of evaluative testing of each resource will have to be devised in order to prepare responsive mitigation measures. Evaluative testing will consist of the collection and analysis of any surface concentrations of cultural materials, and the hand excavation and analysis of the scientific content of any midden components discovered during present or absence testing. MM 3.9/4.0 The City shall retain the services of a qualified archaeologist to develop a protection program for prehistoric sites which contain either a surface or subsurface 381 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 54 deposit of cultural materials or information which qualify under Appendix K of CEQA as “significant” and which are located in areas of the project site where development will significantly alter the current conditions of the prehistoric resource. MM 3.9/5.0 The discovery of historic or prehistoric remains during grading and construction will result in the cessation of such activities until the significant and extent of those remains can be ascertained by a certified archaeologist. MM 3.9/6.0 The City of Dublin will require the following series of actions as part of the application process for development in eastern Dublin: site sensitivity determination; detailed research and field reconnaissance by a certified archaeologist; development of a mitigation plan pursuant to the policies of the Eastern Dublin Specific Plan and current CEQA guidelines. MM 3.9/7.0 All properties with historic resources, which may be impacted by future development shall be subjected to in‐depth archival research to determine the significance of the resources prior to any alteration. Dublin Ranch West SEIR The Dublin Ranch West SEIR determined that supplemental impacts to cultural resources resulting from the Dublin Ranch West project would be less than significant. 2014 Addendum The 2014 Addendum determined that no new or more severe impacts related to cultural resources would result from the Wallis Ranch/Trumark project with implementation of the mitigation measures identified in the Eastern Dublin EIR. Project Impacts and Mitigation Measures (a) Historic resources No New Impact. For a cultural resource to be considered a historical resource (i.e., eligible for listing in the California Register of Historical Resources), it generally must be 50 years or older. Under CEQA, historical resources can include precontact (i.e., Native American) archaeological deposits, historic‐period archaeological deposits, historic buildings, and historic districts. CEQA requires agencies considering projects that are subject to discretionary action to consider the potential impacts on cultural resources that may occur from project implementation (see CEQA Guidelines Section 15064.5). The project site is currently undeveloped; therefore, no built historic resources are located on the project site. As described in the prior environmental documents, it cannot be entirely be ruled out that archaeological cultural resources could be encountered during construction at 382 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 55 the project site. Should archaeological deposits be encountered during project ground disturbance, a substantial adverse change in the significance of a historical resource would occur from its demolition, destruction, relocation, or alteration such that the significance of the resource would be materially impaired (CEQA Guidelines Section 15064.5(b)(1)). If such resources are encountered, implementation of MM 3.9/5.0 and MM 3.9/6.0 identified in the Eastern Dublin EIR would reduce any potential impacts to archaeological and/or Native American resources to a less‐than‐significant level. With adherence to MM 3.9/5.0 and MM 3.9/6.0 identified in the Eastern Dublin EIR, there would be no new or substantially more severe significant impacts to historic resources beyond what has been analyzed in the prior environmental documents. No additional analysis is required. (b) Archaeological resources No New Impact. Pursuant to CEQA Guidelines Section 15064.5(c)(1), “When a project will impact an archaeological site, a lead agency shall first determine whether the site is an historical resource.” Those archaeological sites that do not qualify as historical resources shall be assessed to determine if they qualify as “unique archaeological resources” pursuant to California Public Resource Code Section 21083.2. Archaeological deposits identified during project construction (if any) shall be treated by the City—in consultation with a qualified archaeologist meeting the Secretary of the Interior’s Professional Qualifications Standards for Archeology—in accordance with MM 3.9/5.0 and MM 3.9/6.0 identified in the Eastern Dublin EIR. With adherence to MM 3.9/5.0 and MM 3.9/6.0 identified in the Eastern Dublin EIR, there would be no new or substantially more severe significant impacts to archaeological resources beyond what has been analyzed in the prior environmental documents. No additional analysis is required. (c) Human remains No New Impact. Based on previous archaeological investigation and analysis, there is a low potential for the disturbance of archaeological cultural resources or human remains. However, if human remains are encountered at the project site, State Health and Safety Code Section 7050.5 and State CEQA Guidelines Section 15064.5(e)(1) state that no further disturbance shall occur to the area of the find until the County Coroner has made a determination of origin and disposition of the human bone pursuant to PRC Section 5097.98. The County Coroner must be notified of the find immediately and shall make a determination within two working days of being notified. If the remains are determined to be Native American, the County Coroner shall notify the NAHC by phone within 24 hours, and the NAHC shall then immediately determine and notify a Most Likely Descendant (MLD). With the permission of the landowner or his/her authorized representative, the MLD may inspect the site of the discovery. The MLD shall complete the inspection and make recommendations or preferences for treatment of the remains within 48 hours of being granted access to the site. The MLD’s recommendations may include scientific removal and nondestructive analysis of human remains and items associated with Native American burials, preservation of Native American human remains and associated 383 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 56 items in place, relinquishment of Native American human remains and associated items to the descendants for treatment, or any other culturally appropriate treatment. Compliance with Section 7050.5 of the California Health and Safety Code and Public Resources Code Section 5097.98 regarding the treatment of human remains would ensure that potential impacts to human remains would be less than significant. No new or substantially more severe significant impacts to human remains would occur beyond what has been analyzed in the prior environmental documents. No additional analysis is required. Source(s) Dublin, City of. 2017. City of Dublin General Plan, Adopted February 11, 1985 (Amended as of November 21, 2017). Haag, Jerry. 2004. Dublin Ranch West Project, Final Supplemental Environmental Impact Report. November. Haag, Jerry. 2014. Wallis Ranch/Trumark Project PLPA 2013‐00035, Initial Study. April 22. Wallace Roberts & Todd. 2016. Eastern Dublin Specific Plan. January 7, 1994 (Updated September 20, 2016). Wallace Roberts & Todd. 1992. Final Environmental Impact Report, State Clearinghouse Number 91103064m Eastern Dublin General Plan Amendment and Specific Plan. December 7. 384 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 57 Energy Project Impacts and Mitigation Measures The topic of the project’s energy use was not analyzed in the Eastern Dublin EIR, the Dublin Ranch West SEIR or the 2014 Addendum. The project’s impacts related to energy use are not required to be analyzed unless they constitute new information of substantial importance that was not known and could not have been known at the time the previous EIR was certified as complete (Public Resources Code Section 21166 and the CEQA Guidelines Sections 15162 and 15163). The impact of energy use was known at the time of the certification of the Eastern Dublin EIR, the Dublin Ranch West SEIR and the 2014 Addendum. Under CEQA standards, it is not new information that requires analysis in a supplemental EIR or negative declaration. Therefore, no supplemental environmental analysis of the project’s impacts on these issues is required under CEQA. (a‐b) Wasteful consumption of energy resources, or conflict with local plans for renewable energy As discussed above, no additional environmental analysis is required under CEQA Section 21166. 385 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 58 Geology and Soils ENVIRONMENTAL IMPACTS Issues Potentially Significant Issues Potentially Significant Unless Mitigation Incorporated Less Than Significant Impact No New Impact 6. GEOLOGY AND SOILS. Would the project: a. Directly or indirectly cause potential substantial adverse effects, including the risk of loss, injury, or death involving: i. Rupture of a known earthquake fault, as delineated on the most recent Alquist‐Priolo Earthquake Fault Zoning Map issued by the State Geologist for the area or based on other substantial evidence of a known fault? X ii. Strong seismic ground shaking? X iii. Seismic‐related ground failure, including liquefaction? X iv. Landslides? X b. Result in substantial soil erosion or the loss of topsoil? X c. Be located on a geologic unit or soil that is unstable, or that would become unstable as a result of the project, and potentially result in on‐ or off‐site landslide, lateral spreading, subsidence, liquefaction or collapse? X d. Would the project be located on expansive soil, as defined in Table 18‐1‐B of the Uniform Building Code (1994), creating substantial direct or indirect risks to life or property? X e. Would the project have soils incapable of adequately supporting the use of septic tanks or alternative waste water disposal systems where sewers are not available for the disposal of waste water? X f. Directly or indirectly destroy a unique paleontological resource or site or unique geologic feature? X Environmental Setting The project site is located within the Coast Range Geomorphic Province of Northern California. This province is generally characterized by northwest‐trending mountain ranges and intervening valleys, which are a reflection of the dominant northwest structural trend of the bedrock in the region. 386 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 59 The Calaveras Fault separates the lowlands of the Dublin Valley from the hill areas to the west. Other active faults in the vicinity of the project site include the San Andreas, Hayward, Calaveras and Greenville faults, which are all considered active faults. The project site is not located within a State‐designated Alquist‐Priolo Earthquake Fault Zone. According to the geotechnical report prepared for the Wallis Ranch/Trumark project, alluvial soils are present near Tassajara Creek where the proposed project would be located. Alluvial soils are composed of stiff to very stiff clays with high shrink‐swell potential. Regulatory Framework Federal and State Regulations Alquist‐Priolo Earthquake Fault Zoning Act Following the 1971 San Fernando earthquake, the State legislature passed the Alquist‐Priolo Earthquake Fault Zoning (AP) Act, requiring the State Geologist to delineate Earthquake Fault Zones (EFZ) along known active faults that have high potential for fault rupture. Active faults are defined as a fault that has surface displacement within the last 11,000 years. The AP Act also regulates developments near known active faults due to hazards associated with surface ruptures. As per the AP Act, development areas in or near the Alquist‐Priolo Earthquake Fault Zone require evaluation for potential surface ruptures in order to ensure public safety. State regulations prohibit habitable structures from being sited within 50 feet of an active fault. Seismic Hazards Mapping Act The State legislature passed the Seismic Hazards Mapping Act (SHMA) to ensure public safety in regards to the effects of strong ground shaking, liquefaction, landslides, and other seismic hazards. Per the SHMA, the California Geological Survey (CGS) has established a Statewide mapping program for cities and counties to aid in identifying areas subject to these seismic hazards, which includes the central San Francisco Bay Area. California Building Code The State of California provides a minimum standard for building design and construction standards through Title 24 of the California Code of Regulations (CCR), known as the California Building Code (CBC). The CBC is updated every three years, and the current 2019 CBC went into effect in January 2020. Generally, the CBC is adopted on a jurisdiction‐by‐jurisdiction basis, subject to further modification based on local conditions. The CBC defines the requirements for seismic safety, excavation, and construction activities relating to foundations, retaining walls, and site demolition. It also regulates grading activities such as drainage and erosion control. 387 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 60 California Public Resources Code Section 5097.5 Section 5097.5 of the California Public Resources Code prohibits the excavation, removal, destruction, or tampering with any paleontological resources situated on public lands, except with the express permission of a public agency with jurisdiction over the lands. Local Regulations City of Dublin General Plan Chapter 8.0 of the General Plan outlines policies and programs related to seismic safety, safety and emergency preparedness. The following policies related to geology and soils are applicable to the proposed project: Guiding Policy 8.2.1.A.1. Geologic hazards shall be mitigated or development shall be located away from geologic hazards in order to preserve life, protect property, and reasonably limit the financial risks to the City of Dublin and other public agencies that would result from damage to poorly located public facilities. Implementing Policy 8.2.1.B.1. Structural and Grading Requirements a. All structures shall be designed to the standards delineated in the Dublin Building Code and Dublin’s Grading Ordinance. A “design earthquake” shall be established by an engineering geologist for each structure for which ground shaking is a significant design factor. b. Structures intended for human occupancy shall be at least 50 feet from any active fault trace; freestanding garages and storage structures may be as close as 25 feet. These distances may be reduced based on adequate exploration to accurately locate the fault trace. c. Generally, facilities should not be built astride potential rupture zones, although certain low‐risk facilities may be considered. Critical facilities that must cross a fault, such as oil, gas, and water lines, shall be designed to accommodate the maximum expected offset from fault rupture. Site specific evaluations shall determine the maximum credible offset. Eastern Dublin Specific Plan Section 6.4.1 of the Eastern Dublin Specific Plan outlines policies and programs related to geology, soils and grading. The following policies related to geology and soils are applicable to the proposed project: Policy 6‐40: No structure shall be located on slopes of between 20 to 30 percent, where this location is downslope of colluvium or dormant landslides on slopes over 30 percent, 388 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 61 unless detailed feasibility and design‐level geotechnical investigations indicate that development can be safety undertaken and/or mitigation measures can be implemented which will reduce impacts to a level of insignificance . Policy 6‐41: No structure shall be located on slopes of 10‐30 percent, where underlain by highly expansive soils, areas of unconsolidated fill, or within 100 feet of incised stream channels, unless detailed feasibility and design‐level geotechnical investigations are undertaken and required engineered design mitigations performed. Policy 6‐42: Development is generally not permitted in areas with slopes of 30 percent or greater. Limited grading and repair of landslides will be permitted in areas with slopes of 30 percent or more when: the area involved is less than 3 acres in size; is less than 20percent of a larger developable area; and is surrounded by topography which is predominantly less than 30 percent; and it is necessary to create effective buildable areas or access to areas with slopes predominantly less than 30 percent; and it is necessary to create effective buildable areas or access to areas with slopes predominantly less than 30 percent. Policy 6‐43: New development shall be designed to provide effective control of soil erosion as a result of construction activities and the alteration of site drainage characteristics. Previous CEQA Documents Eastern Dublin EIR The Eastern Dublin EIR identified potentially significant impacts related earthquake ground shaking, alteration of landforms, expansive soils, landslide and slope stability, and erosion and sedimentation. With the exception of the primary effects associated with seismic ground shaking, which was determined to be significant and unavoidable, all other impacts related to geology and soils would be reduced to less than significant with implementation of the mitigation measure identified in the Eastern Dublin EIR. The following mitigation measures would apply to the proposed project: MM 3.6/1.0 The primary effects of ground shaking to structures and infrastructures can be reduced to a generally acceptable level below failure/loss of life by using modern seismic design for resistance to lateral forces in construction. Building in accordance with Uniform Building Code and applicable County and City code requirements should reduce the potential for structural failure, major structural damage, and loss of life. However, some structural damage may occur, and it is possible that some 389 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 62 residences/structures and infrastructures will not be safe for occupation/use after a large earthquake. MM 3.6/2.0 In relatively flat areas which can be developed with minimal grading (the southern portion of the Project site and along Tassajara and Cottonwood Creeks): Locate improvements off (setback from) unstable and potentially unstable landforms such as landslides, colluvium filled swales, creek banks, and steep hill slopes. Remove, stabilize or reconstruct potentially unstable landforms, or Employ modern design, including appropriate foundation design and applicable codes and policies, in the construction of improvements that must be located on potentially unstable landforms or in areas underlain by alluvium with shallow groundwater levels which could be locally susceptible to liquefaction. MM 3.6/4.0 Engineered retention structures and surface and subsurface drainage improvement should be uses as appropriate to improve the stability of sidehill fills and potentially unstable materials, particularly colluvium not entirely removed by grading. MM 3.6/5.0 Seismically‐induced fill settlement can be substantially reduced if fills are properly designed with keyways and subsurface drainage, and are adequately compacted (i.e., minimum 90 percent relative compaction as defined by the American Society for Testing and Materials (ASTM) test method D1557). MM 3.6/6.0 Design roads, structural foundations, and underground utilities to accommodate estimated settlement without failure, especially across transitions between fills and cuts. Potentially unstable stock pond embankments should be removed in development areas, unless they are reconstructed to current earthquake design standards. MM 3.6/7.0 Final design of improvements in the Project site should be made in conjunction with a design‐level geotechnical investigations and the reports should be submitted to the City of review prior to issuing any permits. These investigations should incorporate stability analysis of both natural slopes that could impact planned improvements, and planned engineered (cut and fill) slopes, assuming saturated conditions and earthquake shaking. Significant slopes should achieve a minimum factor of safety against failure of 1.5 for static conditions (where 1.0 is failure) and 1.2 under design pseudo‐static earthquake loading. A displacement analysis should be performed for critical slopes to confirm the effectiveness of mitigation measures. 390 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 63 MM 3.6/14.0 The potential impact of expansive soils and rock with respect to Project improvements can be significantly reduced, or in many cases prevented by the recognition and characterization of site‐specific conditions, and the formulation of appropriate design‐level geotechnical investigation conducted for each specific proposed project. MM 3.6/15.0 The potential for shrink and swell of expansive soils and rock can be reduced by controlling moisture and by treatment through measures listed below. Subsurface drainage alone is not generally effective against the effects of regional wet/drought cycles. Required measures for a specific project should be based on the recommendation of the project geotechnical consultant and approved by the City and include: Moisture conditioning prior to construction; Construction of surface and subsurface drainage to control infiltration after construction; Lime treatment, which can be used to produce non‐expansive fill. MM 3.6/16.0 The potential effects of expansive soil can be reduced by appropriate foundation and pavement design, including those design elements listed below. Adjustable foundation systems are not generally effective against the effects of regional wet/drought cycles and are considered undesirable because the systems require periodic maintenance, and their use should be discouraged. Appropriate design criteria should be developed by the project geotechnical consultant and approved by the City: Founding structural foundations below the zone of seasonal moisture change; Use of structurally supported floors; and Removal and replacement with non‐expansive fill beneath structure slabs and asphaltic concrete. MM 3.6/27.0 The potential impacts of short‐term construction‐related erosion and sedimentation can be reduced by timing grading activities to avoid the rainy season as much as possible, and by implementing one or more of the following interim control measures, which are designed to prevent concentration of runoff, control runoff velocity, and trap silt. Required measures for a specific project will be determined by the City and be a requirement of the grading permit. 391 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 64 Water bars; Mulch‐and‐net blankets on exposed slopes; Straw bale dikes; Temporary culverts and swales; Sediment traps; and/or Silt fences. MM 3.6/28.0 The potential impacts of long‐term erosion and sedimentation can be reduced by the appropriate design, construction, and continued maintenance of surface and subsurface drainage of one or more of the following long‐term control measures. Required measures for a specific project should be based on the recommendations of the project geotechnical consultants, and approved by the City. Construction of sediment catch basins at strategic locations to prevent off site sedimentation from existing and/or potential onsite sources; Design and construction of storm sewer systems that incorporate the cumulative effects of project buildout Creek bank stabilization and repair of existing gullies; Revegetation and continued maintenance of graded slopes; Construction of drainage ditches or cut and fill slopes and/or natural slopes above developed areas; Closed downspout collection systems for individual structures; Design of cut and fill slopes to minimize, as much as possible, natural low velocity sheet flow runoff; and Periodic homeowner/landowner maintenance. Dublin Ranch West SEIR Geology and soils were addressed in the Initial Study for the SEIR. No potentially significant impacts or mitigation measures were identified. 392 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 65 2014 Addendum The 2014 Addendum determined that no new or more severe impacts related to geology and soils would result from the Wallis Ranch/Trumark project with implementation of the mitigation measures identified in the Eastern Dublin EIR. Project Impacts and Mitigation Measures (a) Seismic hazards No New Impact. Potential impacts related to seismic hazards are described below. Fault Rupture. The project site is not located within or adjacent to an Alquist‐Priolo Earthquake Fault Zone. Therefore, the project would have no impact related to fault rupture. Ground Shaking. The project site and the entire San Francisco Bay Area are located in a seismically active region subject to strong seismic ground shaking. Ground shaking is a general term referring to all aspects of motion of the earth’s surface resulting from an earthquake, and is normally the major cause of damage in seismic events. The extent of ground‐shaking is controlled by the magnitude and intensity of the earthquake, distance from the epicenter, and local geologic conditions. The magnitude of a seismic event is a measure of the energy released by an earthquake; it is assessed by seismographs that measure the amplitude of seismic waves. The intensity of an earthquake is a subjective measure of the perceptible effects of a seismic event at a given point. The Modified Mercalli Intensity (MMI) scale is the most commonly used scale to measure the subjective effects of earthquake intensity. It uses values ranging from I to XII. Mapping has been compiled by the Metropolitan Transportation Commission (MTC) and Association of Bay Area Governments (ABAG) for the likely shaking intensities in the Bay Area that would have a 10 percent chance of occurring in any 50‐year period. A large earthquake (magnitude 6.7 or greater) on one of the major active faults in the region would generate severe (MMI 8) ground shaking at the project site. The most significant adverse impact associated with strong seismic shaking is potential damage to structures and improvements. No habitable structures would be constructed as part of the proposed project; however, implementation of the proposed project would increase the use of the project site and result in the construction of improvements in areas subject to seismic shaking. The risk of ground shaking impacts is reduced through adherence to the design and materials standards set forth in building codes. The City of Dublin has adopted the 2019 CBC (Title 24, Part 2 of the California Code of Regulations), which provides for stringent construction requirements on projects in areas of high seismic risk. Consistent with MM 3.6/1.0 and MM 3.6/2.0 identified in the Eastern Dublin EIR, the design and construction for the proposed project would be required to conform with, or exceed, current best standards for earthquake 393 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 66 resistant construction in accordance with the most recent CBC adopted by the City and with the generally accepted standards of geotechnical practice for seismic design in Northern California. With adherence to MM 3.6/1.0 and MM 3.6/2.0 identified in the Eastern Dublin EIR, there would be no new or substantially more severe significant impacts related to ground shaking beyond what has been analyzed in the prior environmental documents. No additional analysis is required. Liquefaction. Liquefaction is the transformation of loose, fine‐grained sediment to a fluid‐like state similar to quicksand. This phenomenon occurs due to strong seismic activity, and lessens the soil’s ability to support a structural foundation. The primary factors affecting the possibility of liquefaction in soil are: (1) intensity and duration of earthquake shaking; (2) soil type and relative density; (3) overburden pressures; and (4) depth to groundwater. Soil most susceptible to liquefaction is clean, loose, fine‐grained sands and non‐plastic silts that are saturated. The California Geological Survey (CGS) has mapped Seismic Hazard Zones that delineate areas susceptible to liquefaction and/or landslides that require proposed new developments in these areas to conduct additional investigation to determine the extent and magnitude of potential ground failure. According to mapping by CGS, the project site is located in an area mapped as a liquefaction hazard zone. The proposed project would be designed and constructed consistent with the most current earthquake resistance standards for Seismic Zone 4 in the CBC, which includes specifications for site preparation, such as compaction requirements for foundations. In addition, implementation of mitigation measures MM 3.6/2.0, MM 3.6/4.0, MM 3.6/5.0, MM 3.6/6.0, and MM 3.6/7.0, identified in the Eastern Dublin EIR and described above would reduce potential impacts associated with these hazards to less than significant. Landslide. The proposed project is located on gently sloping terrain and the potential for landslide is low. The project would not result in any new habitable structures and therefore would not expose people or structures to potential substantial adverse effects from landslides. This impact would be less than significant. With adherence to the mitigation measures identified in the Eastern Dublin EIR, there would be no new or substantially more severe significant impacts related to seismic hazards beyond what has been analyzed in the prior environmental documents. No additional analysis is required. (b) Erosion/topsoil loss No New Impact. The potential for soil erosion exists during the period of earthwork activities and between the time when earthwork is completed and new vegetation is established or hardscape is installed. Exposed soils could be entrained in stormwater runoff and transported off the project site. Construction specifications require the preparation of a Stormwater Pollution and Prevention Plan (SWPPP) prior to any ground disturbance activities as required by the National Pollutant Discharge Elimination System (NPDES) General Permit (GP) for Construction (Order 2009‐009‐DWQ). The SWPPP would provide the details of the erosion 394 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 67 control measures to be applied on the project site during the construction period, including Best Management Practices (BMPs) for erosion control that are recognized by the RWQCB. Additional details regarding the SWPPP are provided in Section 9, Hydrology and Water Quality. In addition, the proposed project would be required to comply with MM 3.6/27.0 and MM 3.6/28.0, identified in the Eastern Dublin EIR and described above, to reduce short‐ and long‐ term erosion and sedimentation associated with project construction and operation. With adherence to the mitigation measures identified in the Eastern Dublin EIR and compliance with regulatory requirements, there would be no new or substantially more severe significant impacts related to erosion beyond what has been analyzed in the prior environmental documents. No additional analysis is required. (c‐d) Soil stability No New Impact. Expansive soils are characterized by the potential for shrinking and swelling as the moisture content of the soil decreases and increases, respectively. Shrink‐swell potential is influenced by the amount and type of clay minerals present and can be measured by the percent change of the soil volume. Soils underlying the project site are primarily composed of Clear Lake clay, drained, 0 to 2 percent slopes, according to the United States Department of Agriculture (USDA) Natural Resources Conservation Service Web Soil Survey. Clear Lake clay is a very deep, poorly drained soil type, with high shrink‐swell potential. The proposed project would be designed and constructed consistent with the most current earthquake resistance standards for Seismic Zone 4 in the CBC, which includes specifications for site preparation, such as compaction requirements for foundations. Therefore, the project site is not anticipated to become unstable as a result of the proposed project, or potentially result in on‐ or off‐site landslides, liquefaction, lateral spreading or settlement. In addition, implementation of mitigation measures MM 3.6/2.0, MM 3.6/4.0, MM 3.6/5.0, MM 3.6/6.0, and MM 3.6/7.0, identified in the Eastern Dublin EIR and described above would reduce potential impacts associated with unstable soils to a less‐than‐significant level. With adherence to the mitigation measures identified in the Eastern Dublin EIR and compliance with standard City development requirements, there would be no new or substantially more severe significant impacts related to soil stability beyond what has been analyzed in the prior environmental documents. No additional analysis is required. (e) Soil capability to support waste water disposal, including septic No New Impact. The proposed project would connect to the existing wastewater conveyance system. On‐site treatment and disposal of wastewater is not proposed for the project; therefore, the proposed project would have no impacts associated with soils incapable of supporting alternative wastewater disposal systems. No new impacts or substantially more severe significant impacts would occur. No additional analysis is required. 395 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 68 (f) Paleontological/unique geological resources No New Impact. No paleontological resources or unique geologic features are known to exist within the project site and ground disturbance for the proposed project is not expected to extend deep enough to affect native soils or to impact scientifically important paleontological resources. If such resources are encountered during ground‐disturbing activities, implementation of MM 3.9/5.0 and MM 3.9/6.0 identified in the Eastern Dublin EIR would reduce any potential impacts to paleontological resources to a less‐than‐significant level. With adherence to MM 3.9/5.0 and MM 3.9/6.0 identified in the Eastern Dublin EIR, there would be no new or substantially more severe significant impacts to paleontological resources beyond what has been analyzed in the prior environmental documents. No additional analysis is required. Source(s) California Geological Survey. 2019. California Earthquake Hazards Zone Application. Website: maps.conservation.ca.gov/cgs/EQZApp/app/ (accessed June 26, 2021). Dublin, City of. 2017. City of Dublin General Plan, Adopted February 11, 1985 (Amended as of November 21, 2017). Haag, Jerry. 2004. Dublin Ranch West Project, Final Supplemental Environmental Impact Report. November. Haag, Jerry. 2014. Wallis Ranch/Trumark Project PLPA 2013‐00035, Initial Study. April 22. Metropolitan Transportation Commission and Association of Bay Area Governments. 2018. Probabilistic Earthquake Shaking Hazard Map. Website: mtc.maps.arcgis.com/apps/webappviewer/index.html?id=4a6f3f1259df42eab29b35dfc d086fc8 (accessed June 25, 2021). United States Department of Agriculture. Natural Resources Conservation Service. Web Soil Survey. Website: websoilsurvey.sc.egov.usda.gov/App/WebSoilSurvey.aspx (accessed June 27, 2021). United States Department of Agriculture Soil Conservation Service. 1975. Soil Survey of Alameda County, Western Part. Available online at: www.nrcs.usda.gov/Internet/FSE_MANUSCRIPTS/california/CA610/0/alameda.pdf (accessed June 27, 2021). Wallace Roberts & Todd. 2016. Eastern Dublin Specific Plan. January 7, 1994 (Updated September 20, 2016). 396 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 69 Wallace Roberts & Todd. 1992. Final Environmental Impact Report, State Clearinghouse Number 91103064m Eastern Dublin General Plan Amendment and Specific Plan. December 7. 397 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 70 Greenhouse Gas Emissions Project Impacts and Mitigation Measures Since the Eastern Dublin EIR and the Dublin Ranch West SEIR were certified before greenhouse gas (GHG) emission analysis became a CEQA requirement in 2006, the determination of whether GHG emissions and climate change need to be analyzed for this proposed project is governed by the law on supplemental or subsequent EIRs (Public Resources Code Section 21166 and CEQA Guidelines Sections 15162 and 15163). The topic of the project’s contribution to GHG emissions was not analyzed in the Eastern Dublin EIR, the Dublin Ranch West SEIR or the 2014 Addendum. However, these impacts are not required to be analyzed unless they constitute new information of substantial importance that was not known and could not have been known at the time the previous EIR was certified as complete (Public Resources Code Section 21166 and the CEQA Guidelines Sections 15162 and 15163). The impact of GHG emissions was known at the time of the certification of the Eastern Dublin EIR, the Dublin Ranch West SEIR and the 2014 Addendum. Under CEQA standards, it is not new information that requires analysis in a supplemental EIR or negative declaration. Therefore, no supplemental environmental analysis of the project’s impacts on this issues is required under CEQA. (a‐b) Generate greenhouse gas (GHG) emissions or conflict with GHG plans or regulations As discussed above, no additional environmental analysis is required under CEQA Section 21166. 398 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 71 Hazards and Hazardous Materials ENVIRONMENTAL IMPACTS Issues Potentially Significant Issues Potentially Significant Unless Mitigation Incorporated Less Than Significant Impact No New Impact 8. HAZARDS AND HAZARDOUS MATERIALS. Would the project: a. Create a significant hazard to the public or the environment through the routine transport, use, or disposal of hazardous materials? X b. Create a significant hazard to the public or the environment through reasonably foreseeable upset and accident conditions involving the release of hazardous materials into the environment? X c. Emit hazardous emissions or handle hazardous or acutely hazardous materials, substances, or waste within ¼ mile of an existing or proposed school? X d. Be located on a site which is included on a list of hazardous materials sites compiled pursuant to Government Code Section 65962.5 and, as a result, would it create a significant hazard to the public or the environment? X e. For a project located within an airport land use plan or, where such a plan has not been adopted, within two miles of a public airport or public use airport, would the project result in a safety hazard or excessive noise for people residing or working in the project area? X f. Impair implementation of or physically interfere with an adopted emergency response plan or emergency evacuation plan? X g. Expose people or structures, either directly or indirectly, to a significant risk of loss, injury or death involving wildland fires, including where wildlands are adjacent to urbanized areas or where residences are intermixed with wildlands? X Environmental Setting A Phase I Environmental Site Assessment (ESA) was prepared for the Wallis Ranch/Trumark project. The Phase I ESA evaluated the potential for past land uses to have impacted the environmental condition of the site through the review of historical information sources (e.g., historic aerial photos and maps) and government databases that list hazardous materials release sites and facilities that handle hazardous materials. According to the 2014 Addendum, the Phase ESA did not identify any recognized environmental conditions within the Wallis Ranch/Trumark project area, within which the project site is located. 399 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 72 Regulatory Framework Federal and State Regulations Federal Aviation Administration (FAA) Notification to the FAA is required for the construction of any tower or the alteration of an antenna structure that is registered with the Commission’s Antenna Structure Registration (ASR) system. Generally, towers that meet certain height and location requirements (e.g., are more than 200 feet above ground level and/or are located within proximity of an airport) require notice with the FAA and ASR system and must register with the Federal Communications Commission (FCC). A final determination of “no hazard” is required from the FAA prior to any construction or alteration of facilities. California Environmental Protection Agency The California Environmental Protection Agency (CalEPA) was formed in 1991 to preserve and protect the environment and to ensure public health and safety in relation to environmental laws and regulations. The CalEPA manages the State’s natural resources in a cohesive, cabinet‐ based system. Additionally, the CalEPA implements the Unified Program, which ensures consistency in the administrative and enforcement actions taken in regards to hazardous waste and materials. Resource Conservation and Recovery Act The Resource Conservation and Recovery Act (RCRA) of 1976 authorized the USEPA to control hazardous waste from “cradle‐to‐grave,” which includes the generation, transportation, treatment, storage, and disposal of hazardous waste. Additionally, RCRA established regulations for managing non‐hazardous solid wastes. In 1986, amendments to RCRA provided authority to the USEPA to manage environmental problems that could result from underground tanks storing petroleum and other hazardous substances. Comprehensive Environmental Response, Compensation, and Liability Act Commonly known as Superfund, the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) of 1980 established regulations concerning closed and abandoned hazardous waste sites. Additionally, it provided regulations regarding liability for closed and abandoned hazardous waste sites and established a trust fund for cleanup when no liability is found. California Department of Toxic Substances and Control The California Department of Toxic Substances Control (DTSC) is a sub‐department under the CalEPA and manages the federal hazardous waste program within the State. The department regulates the lifecycle of hazardous waste and sets goals for reducing hazardous waste 400 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 73 production. The program follows federal and State law to ensure hazardous waste managers correctly handle, store, transport, dispose, reduce, and clean waste, and are equipped in the event of an emergency. Government Code Section 65962.5 CalEPA is required by Section 65962.5 of the Government Code to develop and update a list of hazardous waste and substances sites, known as the Cortese List. The SWRCB and DTSC identify hazardous substance release sites included on the Cortese List, which is used by State and local agencies to ensure CEQA compliance. California Building Code The State of California provides a minimum standard for building design construction standards through Title 24 of the California Code of Regulations (CCR) through the CBC, which is located in Part 2 of Title 24. The CBC is updated every three years, and the current 2019 CBC went into effect in January 2020. It is generally adopted on a jurisdiction‐by‐jurisdiction basis, subject to further modification based on local conditions. City building officials monitor commercial and residential building plans to ensure compliance with fire safety standards within the CBC. California Fire Code The California Fire Code includes regulations for emergency planning, fire service features, fire protection systems, hazardous materials, fire flow requirements, and fire hydrant locations and distribution. Several fire safety requirements include: installation of sprinklers in all high‐rise buildings; the establishment of fire resistance standards for fire doors, building materials, and particular types of construction; and the clearance of debris and vegetation within a prescribed distance from occupied structures in wildlife hazard areas. Chapter 5.08 of the City’s Municipal Code adopts the California Fire Code by reference, which is updated every three years. California Emergency Management Agency The California Emergency Management Agency (CalEMA) was consolidated as part of the Governor’s Office on January 1, 2009, merging the former Governor’s Office of Emergency Services with the existing Governor’s Office of Homeland Security. CalEMA coordinates all State agency response to major disasters to provide support and hazard mitigation efforts for local governments. The agency also ensures the State has the appropriate resources and plans in order to respond in the event of all natural and human‐induced emergencies and disasters. California Department of Forestry and Fire Protection The California Department of Forestry and Fire Protection (CALFIRE) maps the predicted threat of fire within all of California. CALFIRE categorizes this threat based on factors including fuel availability, topography, fire history, and climate. These threats are ranked on a threshold from no fire threat, moderate, high, and very high fire threat. The 2012 Strategic Fire Plan for 401 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 74 California was generated by CALFIRE to provide guidelines and objectives in order to account for associated fire impacts. The Strategic Plan was recently updated in January 2019. California Accidental Release Prevention Program The California Accidental Release Prevention (CalARP) Program aims to prevent accidental releases of regulated hazardous materials that represent a potential hazard beyond property boundaries. Facilities that are required to participate in the CalARP Program use or store specified quantities of toxic and flammable substances (hazardous materials) that can have off‐ site consequences if accidentally released. A Risk Management Plan (RMP) is required for such facilities. The intent of the RMP is to provide basic information that may be used by first responders in order to prevent or mitigate damage to the public health and safety and to the environment from a release or threatened release of a hazardous material, and to satisfy federal and state Community Right‐to‐Know laws. The Alameda County Department of Environmental Health reviews CalARP risk management plans as the Certified Unified Program Agency (CUPA). Regional and Local Regulations San Francisco Bay Regional Water Quality Control Board The Porter‐Cologne Water Quality Control Act established the State Water Resources Control Board (SWRCB) and nine regional water boards including the San Francisco Bay Regional Water Quality Control Board (RWQCB). The San Francisco Bay RWQCB oversees the regulation of waterways within the City of Dublin, and can order groundwater investigations and remediation actions in the event that either groundwater or State surface waters are susceptible to threat. City of Dublin General Plan Section 8.3.4 of the General Plan outlines policies and programs related to hazards and hazardous materials. The following policies related to hazardous materials are applicable to the proposed project: Guiding Policy 8.3.4.1.A.1. Maintain and enhance the ability to regulate the use, transport, and storage of hazardous materials and to quickly identify substances and take appropriate action during emergencies. Guiding Policy 8.3.4.1.A.2. Minimize the risk of exposure to hazardous materials from contaminated sites. Implementing Policy 8.3.4.1.B.4. Require site‐specific hazardous materials studies for new development projects where there is a potential for the presence of hazardous materials from previous uses on the site. If hazardous materials are found, require the clean‐up of sites to acceptable regulatory standards prior to development. 402 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 75 Eastern Dublin Specific Plan According to Section 11.4.7 of the Eastern Dublin Specific Plan, some former uses of the land (e.g., agriculture, medical services, manufacturing) within Eastern Dublin involved the use of hazardous materials. Remnants of these materials may remain on lands within the Eastern Dublin area. The Eastern Dublin Specific Plan includes the following policy to address potential hazardous materials: Policy 11‐1 Prior to issuance of building permits for site‐specific Phase I (and if necessary Phase II) environmental site assessments shall be made available to the Community Development Director, with appropriate documentation that all recommended remediation actions have been completed. City of Dublin Wildfire Management Plan In 1996, the City adopted the City of Dublin Wildfire Management Plan to reduce the risk of open land wildfire while protecting wildlife habitat and other open space values. The Wildfire Management Plan outline responsibilities for the maintenance of open space, funding source for open space maintenance, submittal requirements for review and approval, construction requirements for buildings adjacent to open space or other undeveloped land, emergency access to open space area, and vegetation standards. Previous CEQA Documents Eastern Dublin EIR The Eastern Dublin EIR did not identify any impacts related to hazards and hazardous materials. The Eastern Dublin EIR did identify potentially significant impacts related to wildfire and fire hazards. Mitigation measures were identified to reduce potential impacts to a less‐than‐ significant level. The following mitigation measures would apply to the proposed project: MM 3.5/9.0 Incorporate DRFA recommendations on project design related to access, water pressure, fire safety and prevention into the requirements for development approval. Required that the following DRFA design standards are incorporated where appropriate: ■ Use of non‐combustible roof materials in all new construction. ■ Available capacity of 1,000 gallons per minute (gpm) at 20 pounds per square inch (PSI) fire flow from project fire hydrants on public water mains. For groupings of one‐ family and small two‐family dwellings not exceeding two stories in height, the fire flow requirements are a minimum of 1,000 gpm. Fire flow requirements for all other buildings will be calculated based on building size, type of construction, and location. 403 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 76 ■ A buffer zone along the backs of homes which are contiguous with the wildland are. This buffer zone is to be landscaped with irrigated (wet banding) or equivalent fire‐ resistive vegetation. ■ Compliance with DRFA minimum road widths, maximum street slopes, parking recommendations, and secondary access road requirements. ■ Require residential structures outside the DRFA’s established response time and zone to include fire alarm systems and sprinklers. Dublin Ranch West SEIR Hazards and hazardous materials were addressed in the Initial Study for the SEIR. No potentially significant hazardous materials impacts or additional mitigation measures beyond those identified in the Eastern Dublin EIR were identified. 2014 Addendum The 2014 Addendum determined that no new or more severe impacts related to hazardous materials would result from the Wallis Ranch/Trumark project than were previously analyzed in the prior environmental documents. Project Impacts and Mitigation Measures (a) Exposure to hazardous materials No New Impact. The proposed project would result in the construction of a community park. Park land uses typically do not involve transport, use, or disposal of significant quantities of hazardous materials. However, operation of the proposed project could involve the use, handling, and storage of small quantities of commercially‐available hazardous materials (e.g., paint, cleaning supplies, pesticides, and herbicides). However, hazardous materials stored and used at the site would be required to be managed in accordance with applicable local, State, and federal hazardous materials regulations that would reduce risks associated with leakage, explosions, fires, or the escape of harmful gases. Because the proposed project would generate small quantities of hazardous materials similar in nature, type, and volume to the uses anticipated in the Eastern Dublin Specific Plan, Dublin Ranch West project, and the Wallis Ranch/Trumark project, the project would not result in new impacts or substantially more severe significant impact related to the routine use, storage, or disposal of hazardous materials, beyond those analyzed in the prior environmental documents. During project construction, hazardous materials such as fuel, lubricants, paint, sealants, and adhesives would be transported and used at the project site. The proposed project would be required to comply with federal, State, and local regulations regarding the transportation, use, and disposal of hazardous materials, including preparation and implementation of a Storm 404 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 77 Water Pollution Prevention Plan (SWPPP) that requires implementation of control measures for hazardous material storage and soil stockpiles, inspections, maintenance, and training, and containment of releases to prevent runoff into existing storm collection systems or waterways. Compliance with existing regulations and implementation of the SWPPP during construction would ensure that potential impacts associated with hazardous material use, transport, and disposal are considered less than significant. Therefore, no new impacts or substantially more severe significant impacts would occur. No additional analysis is required. (b) Upset/accident No New Impact. The proposed project would not involve storage or use of hazardous materials (except for small quantities for routine maintenance as described above) or generation of significant hazardous wastes. As such, potential significant impacts related to a foreseeable upset would not be expected. During construction, hazardous materials such as fuel, lubricants, paint, sealants, and adhesives would be transported and used at the project site. Management of these materials at the project site would be subject to the requirements of the National Pollutant Discharge Elimination System (NPDES) Construction General Permit. Compliance with the Construction General Permit would require preparation and implementation of a Stormwater Pollution Prevention Plan (SWPPP) designed to reduce the risk of spills or leaks from the reaching the environment. The SWPPP would also include a Spill Response Plan to address minor spills of hazardous materials. Compliance with SWPPP requirements would ensure that potential significant hazards associated with routine transport, use, or disposal of hazardous materials during and after construction would be less than significant. As previously described, the Phase I ESA prepared for the Wallis Ranch/Trumark project did not identify any recognized environmental conditions within the Wallis Ranch/Trumark project site, within which the project site is located. Compliance with all applicable local, State, and federal regulations and standards pertaining to the release of hazardous materials and risk of upset would ensure that impacts associated with the release of hazardous materials would be less than significant. No new impacts or substantially more severe significant impacts would occur. No additional analysis is required. (c) Near school No New Impact. The Quarry Lane High School is located across Tassajara Road from the project site. No other schools are located within 0.25 mile of the project site. As described in Sections 3.8.1.a and 3.8.1.b, the City would be required to comply with all applicable local, State, and federal regulations and standards related to hazardous emissions and materials. Therefore, no new impacts or substantially more severe significant impacts would occur. No additional analysis is required. 405 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 78 (d) Hazardous materials list No New Impact. Government Code Section 65962.5 states that the California Department of Toxic Substances shall compile and maintain annually a list of hazardous waste facilities subject to corrective action as part of the Health and Safety Code. This list is commonly referred to as the Cortese List. The project site is not located on the Regional Water Quality Control Board’s Leaking Underground Tank Cleanup Site (LUST) or any other Cleanup Program Sites (formerly known as spills, leaks, investigations, and cleanups or SLIC). These two components comprise the State Cortese List of known hazardous materials sites compiled pursuant to Government Code Section 65962.5. Therefore, no new impact or substantially more severe significant impact related to being located on a list of hazardous materials site compiled pursuant to Government Code Section 65962.5 would occur. No additional analysis is required. (e) Proximity to a public airport No New Impact. The project site is not located within an airport land use plan, or within 2 miles of a public airport or public use airport. The closest airports to the project site are the Livermore Municipal Airport, located approximately 3.6 miles southeast of the project site and the Hayward Executive Airport, located approximately 4.5 miles west. The proposed project would include development of a community park. Proposed improvements would be largely at‐ grade. The proposed project would not increase residential density, would not be an incompatible land use, would not add structures of a height such that it would create a hazard or obstruction, and would not result in the addition of a characteristic that would create a hazard to air navigation. Therefore, the proposed project would not result in new impacts or substantially more severe significant impacts than were analyzed in the prior environmental documents. No additional analysis is required. (f) Impair implementation of an emergency response plan or emergency evacuation plan No New Impact. The Tri‐Valley Local Hazard Mitigation Plan was developed in compliance with State requirements and also meets the requirements of the Federal Emergency Management Agency (FEMA) as the City’s local hazard mitigation plan. The Tri‐Valley Local Hazard Mitigation Plan provides a uniform hazard mitigation strategy for the Tri‐Valley area, addressing a range of hazards including, but not limited to, earthquakes, floods and wildland fire. The City of Dublin also has an adopted Comprehensive Emergency Management Plan and a Local Hazard Mitigation Plan to assess hazards and mitigate risks prior to a disaster event. The proposed project would construct a community park within an existing residential neighborhood. It is not located along an identified evacuation route, nor would it affect local roadways. The proposed project would not interfere with an adopted emergency response plan or emergency evacuation plan. Because the proposed project would not substantially alter or block the adjacent roadways, the proposed project would not be expected to impair the function of nearby emergency evacuation routes. Therefore, the proposed project would not result in new impacts or substantially more severe significant impacts related to 406 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 79 implementation of an adopted emergency response plan or emergency evacuation plan. No additional analysis is required. (g) Expose people or structures to wildland fires No New Impact. A wildland fire is a fire occurring in a suburban or rural area which contains uncultivated land, timber, range, brush, or grasslands. Wildland fires are primarily a concern in areas where there is a mix of developed and undeveloped lands. The project site is located within a moderate Fire Hazard Severity Zone within a State Responsibility Area (SRA), as mapped by the California Department of Forestry and Fire Protection (CAL FIRE). The proposed project does not involve construction of residential or commercial structures or any other structures for human occupation, and people would use the park for a limited duration of time. As described above, the proposed project would be required to adhere to mitigation measures identified in the Eastern Dublin EIR and the City’s Wildfire Management Plan. With adherence to MM 3.9/9.0 identified in the Eastern Dublin EIR, there would be no new or substantially more severe significant impacts related to wildland fires beyond what has been analyzed in the prior environmental documents. No additional analysis is required. Source(s) CAL FIRE. 2020. California Fire Hazard Severity Zone Viewer. Website: egis.fire.ca.gov/FHSZ/ (accessed June 25, 2021). Dublin, City of. 2010. City of Dublin Wildfire Management Plan, Adopted July 9, 1996, Revised March 5, 2002 and November 2, 2010. Dublin, City of. 2017. City of Dublin General Plan, Adopted February 11, 1985 (Amended as of November 21, 2017). Haag, Jerry. 2004. Dublin Ranch West Project, Final Supplemental Environmental Impact Report. November. Haag, Jerry. 2014. Wallis Ranch/Trumark Project PLPA 2013‐00035, Initial Study. April 22. Wallace Roberts & Todd. 2016. Eastern Dublin Specific Plan. January 7, 1994 (Updated September 20, 2016). Wallace Roberts & Todd. 1992. Final Environmental Impact Report, State Clearinghouse Number 91103064 Eastern Dublin General Plan Amendment and Specific Plan. December 7. 407 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 80 Hydrology and Water Quality ENVIRONMENTAL IMPACTS Issues Potentially Significant Issues Potentially Significant Unless Mitigation Incorporated Less Than Significant Impact No New Impact 9. HYDROLOGY AND WATER QUALITY. Would the project: a. Violate any water quality standards or waste discharge requirements or otherwise substantially degrade surface or groundwater quality? X b. Substantially decrease groundwater supplies or interfere substantially with groundwater recharge such that the project may impede sustainable groundwater management of the basin? X c. Substantially alter the existing drainage pattern of the site or area, including through the alteration of the course of a stream or river or through the addition of impervious surfaces, in a manner which would: X i. Result in substantial erosion or siltation on‐ or off‐ site; X ii. Substantially increase the rate or amount of surface runoff in a manner which would result in flooding on‐ or offsite; X iii. Create or contribute runoff water which would exceed the capacity of existing or planned stormwater drainage systems or provide substantial additional sources of polluted runoff; or X iv. Impede or redirect flood flows? X d. In flood hazard, tsunami, or seiche zones, risk release of pollutants due to project inundation? X e. Conflict with or obstruct implementation of a water quality control plan or sustainable groundwater management plan? X Environmental Setting The project site is located within the Tassajara Creek watershed, which drains an approximately 23.2 square mile basin east of the San Francisco Bay via the Arroyo Del Valle and Arroyo de La Laguna. Tassajara Creek flows in a north‐south direction through the project site. The site is located within the jurisdiction of Zone 7 of the Alameda County Flood Control and Water Conservation District. 408 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 81 According to the Federal Emergency Management Agency (FEMA) Flood Insurance Rate Map Panel 06001C0326G (August 3, 2009), the majority of the project site is located in Zone X, Area of Minimal Flood Hazard, which is not considered a special flood hazard area. The Tassajara Creek channel, which bisects the site, is designated as Zone A, which is a special flood hazard area. Tassajara Creek is not currently listed as impaired on the current Clean Water Act Section 303(d) List of Impaired Waters; however, Arroyo Del Valle and Arroyo de La Laguna are both listed as impaired due to diazinon associated with urban‐related runoff. Regulatory Framework Federal and State Regulations Clean Water Act The USEPA adopted the Clean Water Act (CWA) in 1977 to set a framework for establishing regulations to protect the chemical, physical, and biological integrity of the nation’s waters. The National Pollutant Discharge Elimination System (NPDES) under section 402(p) of the CWA aims to reduce the direct discharge of pollutants into waterways and manage additional pollution runoff. The San Francisco Bay RWQCB has the authority to administer permits within its jurisdiction including the City of Dublin. Section 303(d) of the CWA requires that each state identify “impaired” water bodies or segments of water bodies that do not meet at least one of the listed state water‐quality standards. When the water body or segment is listed as impaired, the state institutes a Total Maximum Daily Load (TMDL) for the pollutant found to be creating the impairment. The TMDL is the maximum amount of a pollutant that a water body can receive and still meet water‐quality standards, and is usually calculated based on the total amount of allowable loads generated by a single pollutant deriving from all of its originating point and non‐point sources. The 303(d) list identifies water bodies that will need to establish a TMDL in the future in order to abide by water‐quality standards. As per 303(d), the RWQCB has identified impaired water bodies within its authority as well as the associated pollutants causing the impairment. National Pollutant Discharge Elimination System As described above, the NPDES was established under the CWA to regulate municipal, industrial and stormwater discharges to the surface waters of the United States, including discharges from municipal separate storm sewer systems (MS4s). All entities that discharge pollutants into an identified waterbody of the United States are required to obtain a NPDES permit. The proposed project is subject to the conditions of the Municipal Regional Permit (MRP) (Order No. R2‐2015‐0049 NPDES Permit No. CAS612008). The C.3 Stormwater Technical Guidance updated in February 2021 as per the Alameda County Clean Water Program, outlines low impact development provisions that the MS4 permit holders can use during planning of 409 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 82 development activities to manage and reduce occurrences of stormwater runoff pollutant discharges. These low impact development methods aim to preserve existing natural landscapes to minimize imperviousness and water quality impacts. National Flood Insurance Program The National Flood Insurance Program exists under the Federal Emergency Management Agency (FEMA) to distinguish and evaluate flood hazards. FEMA generated Flood Insurance Rate Maps (FIRMs) identify the location of these potential flooding hazards and help plan for the correct land use and floodplain development within those locations. Information for FIRMs is generated by Flood Insurance Studies (FISs). Special Flood Hazard Areas (SFHAs) are distinguished via FIRMs. Porter‐Cologne Water Quality Control Act California adopted the Porter‐Cologne Water Quality Act in 1969, giving the SWRCB and regional water quality control boards the authority over State water rights and policies in relation to managing and enforcing water quality. The regional boards adopt Water Quality Control Plans (Basin Plans) that outline their region’s water quality conditions and standards as well as beneficial uses of the region’s ground and surface water. The City of Dublin lies within the boundaries Region 2 governed by the San Francisco Bay RWQCB. The most recent Basin Plan for the San Francisco Bay Watershed was updated by the RWQCB in 2015 and is revised periodically to reflect relevant ecological, technological, and political changes. The Basin also includes water quality standards for groundwater. Statewide Construction General Permit Construction projects or activities that are one acre or more must obtain a General Permit for Storm Water Discharges Associated with Construction and Land Disturbance Activities, or a Construction General Permit from the SWRCB. Prior to construction, the Project Applicant must submit online Permit Registration Document (PRDs) to the Stormwater Multiple Application and Report Tracking System (SMARTS) website. The PRDs include a Notice of Intent (NOI), Risk Assessment, Post‐Construction Calculations, a Site Map, the Stormwater Pollution Prevention Plan (SWPPP), a signed certification by the Project Applicant, and the first annual fee. Applicants are also required develop BMPs in accordance with the development of a SWPPP. The SWPPP maps the boundaries of the Project site, identifying the existing and proposed structures and roads within the vicinity of the site, as well as stormwater collection and discharge points and drainage patterns. These BMPs should address strategies to prevent soil erosion and the proper treatment and discharge of other pollutants generated by construction, which could contaminate waterways on or nearby the site. A SWPPP must also include a visual chemical monitoring program of nonvisible pollutants and a sediment‐monitoring program. As the Project site is larger than one acre, it is subject to these listed requirements. 410 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 83 Sustainable Groundwater Management Act The Sustainable Groundwater Management Act of 2014 (SGMA) is a comprehensive three‐bill package that was signed into California State law in September 2014. The SGMA that provides a framework for sustainable management of groundwater supplies by local authorities, with a limited role for State intervention only if necessary to protect the resource. The plan is intended to ensure a reliable groundwater water supply for California for years to come. The SGMA requires the formation of local groundwater sustainability agencies (GSAs) that must assess conditions in their local water basins and adopt locally based management plans. The act requires that GSAs implement plans and achieve long‐term groundwater sustainability within 20 years of implementation of the SGMA. City of Dublin General Plan Sections 7.2 and 7.3 of the General Plan outlines policies and programs related to stream corridors and riparian areas and erosion and siltation control. The following policies related to hydrology and water quality are applicable to the proposed project: Guiding Policy 7.2.1.A.1. Protect riparian vegetation as a protective buffer for stream quality and for its value as a habitat and aesthetic resource. Guiding Policy 7.2.1.A.2. Promote access to stream corridors for passive recreational use and to allow stream maintenance and improvements as necessary, while respecting the privacy of owners of property abutting stream corridors. Implementing Policy 7.2.1.B.1. Enforce Watercourse Ordinance 52‐87 for developed areas of the city. Implementing Policy 7.2.1.B.2. Require open stream corridors of adequate width to protect all riparian vegetation, improve access, and prevent flooding caused by blockage of streams. Implementing Policy 7.2.1.B.3. Require revegetation of creek banks with species characteristic of local riparian vegetation, where construction requires creekbank alteration. Guiding Policy 7.3.1.A.1. Maintain natural hydrologic systems. Guiding Policy 7.3.1.A.2. Regulate grading and development on steep slopes. Implementing Policy 7.3.1.B.1. Enforce the requirements of the Municipal Regional Permit for stormwater issued by the San Francisco Bay Regional Water Quality Control 411 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 84 Board or any subsequent permit as well as Chapter 7 (Public Works) and Chapter 9 (Subdivisions) of the Dublin Municipal Code for maintenance of water quality and protection of stream courses. Implementing Policy 7.3.1.B.2. Review development proposals to insure site design that minimizes soil erosion and volume and velocity of surface runoff. Implementing Policy 7.3.1.B.3. Restrict development on slopes over 30 percent. Eastern Dublin Specific Plan Section 9.3 of the Eastern Dublin Specific Plan contains policies related to storm drainage and water quality. The following policies related to hydrology and water quality are applicable to the proposed project: Policy 9‐7: Require drainage facilities that will minimize any increased potential for erosion or flooding. Policy 9‐8: Require channel improvements consist of natural creek bottoms and side slopes with natural vegetation where possible to meet Policy 9‐7 above. (See also Policy 7‐11.) Policy 9‐9: Plan facilities and select management practices in the Eastern Dublin Specific Plan area that protect and enhance water quality. Previous CEQA Documents Eastern Dublin EIR The Eastern Dublin EIR identified potentially significant impacts related to the overdraft of potential flooding, reduced groundwater recharge, and non‐point sources of pollution. Mitigation measures were identified to reduce potential impacts to a less‐than‐significant level. The following mitigation measures would apply to the proposed project: MM 3.5/44.0 Require drainage facilities that will minimize any increased potential or erosion or flooding. MM 3.5/45.0 Require channel improvements consisting of natural creek bottoms and side slopes with natural vegetation where possible to meet Policy 9.7 above. MM 3.5/46.0 Storm Drainage Master Plan. Require a Master Drainage Plan be prepared for each development application prior to development approval. The plan shall include: 412 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 85 Hydrologic studies of entire related upstream watersheds. Phase approach and system modeling. Documentation of existing conditions. Design‐level analysis of the impacts of proposed development of the existing creek channels and watershed areas. Detailed analysis of effects of development on water quality of surface runoff. Detailed drainage design plans for each phase of the proposed project. Design features to minimize runoff flows within existing creeks/channels in order to alleviate potential erosion impacts and maintain riparian vegetation. MM 3.5/47.0 Flood Control. Require development in the Planning Area to provide facilities to alleviate potential downstream flooding due to project development. These facilities shall include: Retention/detention facilities as appropriate to control peak runoff discharge rates. Energy dissipators at discharge locations to prevent channel erosion, as per Zone 7 guidelines. Energy dissipators should be designed to minimize adverse effects on biological resources and the visual environment; in particular, widespread use of rip‐ rap should be avoided. MM 3.5/49.0 Plan facilities and select management practices in the Eastern Dublin Specific Plan EIR area that protect and enhance water quality. MM 3.5/50.0 Zone 7 supports ongoing groundwater recharge program from the Central Basin. MM 3.5/51.0 Develop community‐based programs to educate local residents and businesses on methods to reduce non‐point sources of pollution. Coordinate such programs with current Alameda County programs. Such programs include: Increased availability of liquid recycling centers (i.e. oil, greases, etc.) to reduce potential for dumping into storm drains. Programs that educate the public that catch basins and storm drains flow to creeks, to potable groundwater basins, and to the San Francisco Bay, including a potential 413 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 86 program to paint labels at each catch basin and storm drain to alert people to these facts. Dublin Ranch West SEIR Hydrology and water quality were addressed in the Initial Study for the SEIR. No potentially significant hydrology or water quality impacts or additional mitigation measures beyond those identified in the Eastern Dublin EIR were identified. 2014 Addendum The 2014 Addendum determined that no new or more severe impacts related to hydrology and water quality would result from the Wallis Ranch/Trumark project with implementation of the mitigation measures identified in the Eastern Dublin EIR. Project Impacts and Mitigation Measures (a) Violate water quality or waste discharge requirements or degrade surface or groundwater quality No New Impact. Construction activities associated with the proposed project would cause disturbance of soil during excavation work, which could adversely impact water quality. Contaminants from construction vehicles and equipment and sediment from soil erosion could increase the pollutant load in runoff being transported to receiving waters during development. Although surface runoff from the site would likely decrease with the proposed project (due to proposed stormwater treatment measures), runoff from the proposed landscaped areas may contain residual pesticides and nutrients (associated with landscaping) and sediment and trace metals (associated with atmospheric deposition) during operation of the project. Because the project would result in the disturbance of greater than 1 acre of soil, project implementation is required to comply with the Construction General Permit, which requires preparation of a SWPPP and implementation of BMPs to reduce the discharge of construction‐ related stormwater pollutants. A SWPPP must include a detailed description of controls to reduce pollutants and outline maintenance and inspection procedures. Typical sediment and erosion BMPs include protecting storm drain inlets, establishing and maintaining construction exits and perimeter controls to avoid tracking sediment off‐site onto adjacent roadways. A SWPPP also defines proper building material staging and storage areas, paint and concrete washout areas, describes proper equipment/vehicle fueling and maintenance practices, measures to control equipment/vehicle washing and allowable non‐stormwater discharges, and includes a spill prevention and response plan. Compliance with the requirements of the Construction General Permit would ensure that the proposed project would result in less‐than‐ significant impacts to water quality during construction. 414 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 87 As the site is currently largely undeveloped, the proposed project would increase the total amount of impervious surface on the project site. The increase in impervious surface could result in increased stormwater runoff (both flow rate and volume) from the project site relative to pre‐project conditions, which may result in hydromodification impacts (i.e., increased potential for erosion of creek beds and banks, silt pollution generation, or other adverse impacts on beneficial uses due to increased erosive force). The proposed project would be considered a “regulated project” under the MRP. Provision C.3 of the MRP requires new development and redevelopment projects that would replace more than 10,000 square feet of existing impervious surfaces to include post‐construction stormwater control in project designs. Under the C.3 requirements, the preparation and submittal of a Stormwater Control Plan (SCP) would be required for the project site. The purpose of a SCP is to detail the design elements and implementation measures necessary to meet the post‐construction stormwater control requirements of the MRP. In particular, SCPs must include Low Impact Development (LID) design measures, which reduce water quality impacts by preserving and recreating natural landscape features, minimizing imperviousness, and using stormwater as a resource, rather than a waste product. The proposed project would also be required to prepare a Stormwater Facility Operation and Maintenance Plan to ensure that stormwater control measures are inspected, maintained, and funded for the life of the project. Compliance with the C.3 requirements of the MRP would ensure that operation‐period impacts to water quality would be less than significant. Because the proposed project would be required to comply with applicable State and local regulations, no new impacts or substantially more severe significant impacts related to water quality violations, wastewater discharges, or water quality degradation would occur. No additional analysis is required. (b) Substantially decrease or interfere with groundwater supplies No New Impact. Although the proposed project would result in a net increase in impervious surface coverage compared to the existing condition, the proposed project would include the use of LID features that would retain and clean stormwater onsite before discharging it into the municipal stormwater system, consistent with Provision C.3 of the MRP. The proposed project would connect to the existing water lines within the vicinity of the project site and would not require the use of groundwater. Due to the depth of groundwater and the shallow excavations required for project construction, dewatering is not anticipated during construction activities. Therefore, no new impacts or substantially more severe significant impacts related to groundwater supplies would occur. No additional analysis is required. 415 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 88 (c) Substantially alter existing drainage patterns re: erosion/siltation, re: flooding, or degrade water quality No New Impact. The proposed project would not alter the course of a stream or river. Tassajara Creek bisects the project site; however, proposed park improvements would be constructed outside of the riparian zone of the creek in compliance with the conditions of the conservation easements. The proposed project would create new landscaped areas and impermeable pavement surfaces which would alter the existing drainage pattern of the project site. However, as discussed above, the proposed project would be required to comply with the C.3 requirements of the MRP and other standard City development requirements related to stormwater. Required compliance with applicable regulations and implementation of City policies, as described above, would reduce potential impacts of the project related to changes in drainage patterns to a less‐than‐significant level. Therefore, no new impacts or substantially more severe significant impacts related to drainage patterns would occur. No additional analysis is required. (d) Flood hazard, seiche, or tsunami No New Impact. As described above, the majority of the project site is not located within a flood hazard area mapped by FEMA. The portions of the project site immediately adjacent to Tassajara Creek lie within a 100‐year flood hazard area; however, no park improvements are proposed within the flood zone. The riparian corridor associated with Tassajara Creek would be preserved consistent with the conditions of the conservation easement. The project site is not located within a mapped tsunami inundation area for Alameda County, and no seismically induced seiche waves have ever been documented in the San Francisco Bay area. Additionally, the proposed project would implement various design features to ensure contaminants would be contained. Therefore, no new impacts or substantially more severe significant impacts related to flood hazard, seiche or tsunami would occur. No additional analysis is required. (e) Water Quality No New Impact. As noted above, the proposed project would implement various design features to ensure the proposed project would have a less‐than‐significant impact related to water quality. Additionally, the proposed project would not include the use of groundwater and would not substantially increase the amount of impervious surfaces on the project site, and therefore would not interfere with groundwater recharge in the vicinity of the project site. Therefore, no new impacts or substantially more severe significant impacts related to water quality would occur. No additional analysis is required. 416 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 89 Source(s) Association of Bay Area Governments and Metropolitan Transportation Commission. 2013. Plan Bay Area. July 18. California, State of. 2019. California Official Tsunami Inundation Maps. Website: www.conservation.ca.gov/cgs/tsunami/maps (accessed June 27, 2021). California Water Boards San Francisco Bay R2. 2021. The 303(d) List of Impaired Water Bodies website: www.waterboards.ca.gov/rwqcb2/water_issues/programs/TMDLs/303dlist.html (accessed June 27, 2021). Federal Emergency Management Agency. 2021. FEMA Flood Map Service Center (map). Website: msc.fema.gov/portal/search?AddressQuery=6363%20Tassajara%20Road%2C%20Dublin %2C%20CA#searchresultsanchor (accessed June 27, 2021). Haag, Jerry. 2004. Dublin Ranch West Project, Final Supplemental Environmental Impact Report. November. Haag, Jerry. 2014. Wallis Ranch/Trumark Project PLPA 2013‐00035, Initial Study. April 22. Wallace Roberts & Todd. 2016. Eastern Dublin Specific Plan. January 7, 1994 (Updated September 20, 2016). Wallace Roberts & Todd. 1992. Final Environmental Impact Report, State Clearinghouse Number 91103064 Eastern Dublin General Plan Amendment and Specific Plan. December 7. 417 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 90 Land Use and Planning ENVIRONMENTAL IMPACTS Issues Potentially Significant Issues Potentially Significant Unless Mitigation Incorporated Less Than Significant Impact No New Impact 10. LAND USE AND PLANNING. Would the project: a. Physically divide an established community? X b. Cause a significant environmental impact due to a conflict with any applicable land use plan, policy, or regulation adopted for the purpose of avoiding or mitigating an environmental effect? X Environmental Setting The proposed project site consists of an approximately 9‐acre site within the Wallis Ranch residential development, located in eastern Dublin. Surrounding land uses include residential development to the north, undeveloped open space to the west and south, and Tassajara Road and Quarry Lane School to the east. As shown on Figure 4.1 in the Eastern Dublin Specific Plan, the project site is designated as Neighborhood Park. The Neighborhood Park designation provides for development of parks that serve the recreation needs of a specific neighborhood or cluster of residential units. These parks are at least 5‐7 acres in size, are centrally located to the homes they serve, and have frontage on a minimum of two streets. Park sites are generally level to accommodate active recreation, in most instances, the Neighborhood Parks are located adjacent to an open space corridor to facilitate safe pedestrian movement within the community. Regulatory Framework City of Dublin General Plan The City of Dublin General Plan is a policy document guiding future development within the City and is a comprehensive plan intended to guide growth and development. The Land Use Element is considered the framework for the General Plan because it establishes development and land use patterns that enhance the City’s character. Chapter 3 of the Land Use Element outlines policies and programs to provide open space both within and apart from development projects. The following goals and policies related to land use that are applicable to the proposed project. Guiding Policy 3.4.1.A.1. Expand park area throughout the Primary and Extended Planning Areas to serve new development. 418 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 91 Guiding Policy 3.4.1.A.3. Restrict structures on the hillsides that appear to project above major ridgelines. The present undisturbed natural ridgelines as seen from the Primary Planning Area and key travel corridors are an essential component of Dublin’s appearance as a freestanding city ringed by open hills. Implementing Policy 3.4.1.B.1. Acquire and improve parklands in conformance with the standards and policies in the City’s Parks and Recreation Master Plan. Implementing Policy 3.4.1B.2. Continue to maintain and periodically update the Citywide Parks and Recreation Master Plan. The Master Plan shall provide specific standards for acquiring parkland to support growth planned in the Land Use Element. Implementing Policy 3.4.1.B.3. The policies set forth below, as implemented through the Parks and Recreation Master Plan and development approvals, constitute the action program for preserving and providing open space for outdoor recreation. Guiding Policy 3.4.2.A.1. Provide active parks and facilities which are adequate to meet citywide needs for open space, cultural, and sports facilities, as well as the local needs of the Eastern Extended Planning Area. Guiding Policy 3.4.2.A.2. Establish a trail system with connections to planned regional and sub‐regional systems, including north‐south corridors such as East Bay Regional Park District’s trail along Tassajara Creek north to Mt. Diablo State Park. Guiding Policy 3.4.2.A.3. Using the natural stream corridors and major ridgelines, establish a comprehensive, integrated trail network within the Planning Area that permits safe and convenient pedestrian and bicycle access within urban areas and between urban areas and open space areas. Per the 2005 Fallon Village amendment, in order to preserve biological resources, trails in Fallon Village will not be placed along ridgelines and in stream corridors. Implementing Policy 3.4.2.B.1. Require land dedication and improvements for the parks designated in the General Plan for the Eastern Extended Planning Area and based on a standard of 5 net acres per 1,000 residents. Collect in‐lieu park fees as required by City policies. Implementing Policy 3.4.2.B.2. Require land dedication and improvements for trails along designated stream corridors. 419 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 92 Eastern Dublin Specific Plan The Eastern Dublin Specific Plan designates a broad range of open space and park areas to provide for a variety of passive and active recreation uses, including approximately 240 acres designated for developed parkland. The following policies from the Eastern Dublin Specific Plan apply to the proposed project: Policy 4‐29: Ensure that park development in eastern Dublin is consistent with the standards and phasing recommended in the City of Dublin's Recreation and Parks Master Plan, and provides a full range of recreational activities from intense active sports to passive open space enjoyment. Policy 4‐30: Ensure, as part of the approval process, that each new development provides its fair share of planned open space, parklands, and trail corridors, as shown on Figure 4.1. Policy 4‐31: Establish a convenient, multi‐use, all‐weather network of trails, including bike lanes, to link planning area parks, recreation facilities, schools, employment centers and major open space areas to each other and to the surrounding community. City of Dublin Zoning Ordinance Title 8 of the City’s Municipal Code establishes the City of Dublin Zoning Ordinance, which sets cohesive zoning rules for the City and designates land use types. The City’s Zoning Ordinance is the primary implementation tool for the goals and policies contained in the Land Use Element. For this reason, the Zoning Map must be consistent with the General Plan Land Use Map. The City’s Land Use Map indicates the general location and extent of future development in the City. The City’s Zoning Ordinance contains more specific information related to permitted land uses, building intensities, and development standards. The project site is designated as Planned Development (PD) Ordinance No. 11‐14 and PD Ordinance No. 09‐15. The intent of the PD designation is to create a more desirable use of the land, a more coherent and coordinated development, and a better physical environment than would otherwise be possible under a single zoning district or combination of zoning districts. A PD Zoning District is established by the adoption of an Ordinance reclassifying the property to such district and adopting a Development Plan, which establishes regulations for the use, development, improvement, and maintenance of the property within the PD district. The project site is located within the Dublin Ranch West planned development for which Stage 1 and Stage 2 Development Plans have been approved by the City. City of Dublin Parks and Recreation Master Plan The City of Dublin Parks and Recreation Master Plan establishes goals, standards, guiding policies, and action programs to guide the City of Dublin in the acquisition, development and 420 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 93 management (operations and maintenance) of Dublin’s park and recreation facilities through the ultimate build‐out of the City in accordance with the General Plan. The Master Plan outlines specific standards for developing, maintaining, and operating the City’s park and recreation system. The Master Plan designates Wallis Ranch Community Park as an “Active Community Park.” As defined in the Master Plan, “Active Community Parks should offer a variety of recreational opportunities that attract a wide range of local age groups and interests. Active Community Parks should feature large open space areas, unique natural, historic, and/or cultural areas as well as group picnic areas, bicycling and hiking trails, sports facilities, dog runs, community facilities, and other unique features or facilities.” Previous CEQA Documents Eastern Dublin EIR The Eastern Dublin EIR identified less than significant impacts related to the substantial alteration to existing land use, on‐site project land use conflicts, conversion of non‐urban lands, potential conflicts with land uses to the south, east and north. A potentially significant impact was identified related to potential conflicts with land uses to the west, which was determined to be less than significant with implementation of Mitigation Measure 3.1/1.0, which requires the City to coordinate with the Army regarding future development proposals in the vicinity of the Army’s Camp Parks facility. Dublin Ranch West SEIR The Dublin Ranch West SEIR determined that supplemental impacts resulting from the Dublin Ranch West project would be less than significant. Implementation of the Dublin Ranch West project would convert the same extent of vacant land to urban uses as identified in the Eastern Dublin EIR and would not represent an abrupt or significant on‐site land use change as described in the Eastern Dublin EIR. 2014 Addendum The 2014 Addendum determined that no new or more severe impacts related to land use would result from the Wallis Ranch/Trumark project than were previously analyzed in the prior environmental documents. Project Impacts and Mitigation Measures (a) Physically divide an established community No New Impact. The physical division of an established community typically refers to the construction of a feature (such as an interstate highway or railroad tracks) or removal of a means of access (such as a local road or bridge) that would impair mobility within an existing 421 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 94 community, or between a community and outlying areas. For instance, the construction of an interstate highway through an existing community may constrain travel from one side of the community to another; similarly, such construction may also impair travel to areas outside of the community. The proposed project would result in the construction of a new neighborhood park within an existing residential neighborhood. Access to the project site would be via an existing roadway. The proposed project would not result in the realignment or closure of any existing roads. Therefore, the proposed project would not result in the physical division of an established community or adversely affect the continuity of land uses in the vicinity. This impact would not result in new significant or substantially more severe significant impacts beyond those analyzed in the prior environmental documents. No additional analysis is required. (b) Conflict with land use plan, policy, or regulation No New Impact. The proposed project would involve the development of a new neighborhood park within an existing residential neighborhood. The proposed project would develop a currently vacant site with a mix of recreational facilities that would serve community needs and provide opportunities for increased physical activity and social interaction. The proposed park would be compatible with the mix and intensity of uses located within the vicinity of the site, which generally consist of residential and public uses. Therefore, the proposed project would not result in new significant or substantially more severe significant impacts related to conformity with land use plans beyond those already analyzed in the prior environmental documents. No additional analysis is required. Source(s) Dublin, City of. 2015. City of Dublin Parks and Recreation Master Plan. Dublin, City of. 2017. City of Dublin General Plan, Adopted February 11, 1985 (Amended as of November 21, 2017). Dublin, City of. 2021. City of Dublin Municipal Code. May 18. Available online at: www.codepublishing.com/CA/Dublin/ (accessed June 25, 2021) Haag, Jerry. 2004. Dublin Ranch West Project, Final Supplemental Environmental Impact Report. November. Haag, Jerry. 2014. Wallis Ranch/Trumark Project PLPA 2013‐00035, Initial Study. April 22. Wallace Roberts & Todd. 2016. Eastern Dublin Specific Plan. January 7, 1994 (Updated September 20, 2016). 422 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 95 Wallace Roberts & Todd. 1992. Final Environmental Impact Report, State Clearinghouse Number 91103064 Eastern Dublin General Plan Amendment and Specific Plan. December 7. 423 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 96 Mineral Resources ENVIRONMENTAL IMPACTS Issues Potentially Significant Issues Potentially Significant Unless Mitigation Incorporated Less Than Significant Impact No New Impact 11. MINERAL RESOURCES. Would the project: a. Result in the loss of availability of a known mineral resource that would be of value to the region and the residents of the state? X b. Result in the loss of availability of a locally‐important mineral resource recovery site delineated on a local general plan, specific plan, or other land use plan? X Environmental Setting Minerals are any naturally occurring chemical element or compound, or groups of elements and compounds, formed from inorganic processes and organic substances including, but not limited to, coal, peat and oil bearing rock, but excluding geothermal resources, natural gas and petroleum. Rock, sand, gravel and earth are also considered minerals by the Department of Conservation when extracted by surface mining operations. Neither the State Geologist nor the California Department of Mines and Geology (CDMG) have classified any areas in the City as containing mineral deposits that are either of Statewide significance or the significance of which requires further evaluation. The project site has been classified by the CDMG as being located in MRZ‐1, indicating that the project site is located in an area where adequate information indicates that no significant mineral deposits are present, or where it is judged that little likelihood exists for their presence. Regulatory Framework State Regulations Surface Mining and Reclamation Act of 1974 The California Department of Conservation, Geological Survey (CGS) and the California State Mining and Geology Board are required by the Surface Mining and Reclamation Act of 1974 (SMARA) to categorize lands into four Aggregate and Mineral Resource Zones (MRZs), described below. These MRZs classify lands that contain significant regional or Statewide mineral deposits. Lead Agencies are mandated by the State to incorporate MRZs into their General Plans. MRZs are classified on the basis of geologic factors without regard to existing land use and land ownership. The four MRZs are categorized as follows: 424 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 97 MRZ‐1: An area where adequate information indicates that no significant mineral deposits are present, or where it is judged that little likelihood exists for their presence. MRZ‐2: An area where adequate information indicates that significant mineral deposits are present, or where it is judged that a high likelihood exists for their presence. MRZ‐3: An area containing mineral deposits, the significance of which cannot be evaluated. MRZ‐4: An area where available information is inadequate for assignment to any other MRZ zone. Of the four categories, lands classified as MRZ‐2 are of the greatest importance because such areas are underlain by demonstrated mineral resources or are located where geologic data indicate that significant measured or indicated resources are present. MRZ‐2 areas are designated by the State Mining and Geology Board as being “regionally significant.” Such designations require that a Lead Agency make land use decisions involving designated areas in accordance with its mineral resource management policies and that it consider the importance of the mineral resource to the region or the State as a whole, not just to the Lead Agency’s jurisdiction. Previous CEQA Documents None of the prior environmental documents indicate that significant mineral resource deposits exist on the project site. Therefore, no impacts related to mineral resources were identified. Project Impacts and Mitigation Measures (a‐b) Loss of known or identified mineral resource No New Impact. The project site is not located in a designated mineral resource area. Therefore, the proposed project would not result in the loss of available of a known mineral resources that would be of value of the region and residents of the state or the loss of availability of any known locally important mineral resource recovery site. Therefore, no new or substantially more severe significant impacts related to mineral resources would occur. No additional analyses is required. Source(s) Dublin, City of. 2017. City of Dublin General Plan, Adopted February 11, 1985 (Amended as of November 21, 2017). Haag, Jerry. 2004. Dublin Ranch West Project, Final Supplemental Environmental Impact Report. November. Haag, Jerry. 2014. Wallis Ranch/Trumark Project PLPA 2013‐00035, Initial Study. April 22. 425 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 98 Wallace Roberts & Todd. 2016. Eastern Dublin Specific Plan. January 7, 1994 (Updated September 20, 2016). Wallace Roberts & Todd. 1992. Final Environmental Impact Report, State Clearinghouse Number 91103064 Eastern Dublin General Plan Amendment and Specific Plan. December 7. State of California. Division of Mines and Geology. Generalized Mineral Land Classification Map of the South San Francisco Bay Production—Consumption Region. Published 1996. 426 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 99 Noise ENVIRONMENTAL IMPACTS Issues Potentially Significant Issues Potentially Significant Unless Mitigation Incorporated Less Than Significant Impact No New Impact 12. NOISE. Would the project result in: a. Generation of a substantial temporary or permanent increase in ambient noise levels in the vicinity of the project in excess of standards established in the local general plan or noise ordinance or applicable standards of other agencies? X b. Generation of excessive ground borne vibration or ground borne noise levels? X c. For a project located within the vicinity of a private airstrip or an airport land use plan or, where such a plan has not been adopted, within two miles of a public airport or public use airport, would the project expose people residing or working in the project area to excessive noise levels? X Environmental Setting Noise Background Noise is usually defined as unwanted sound. Noise consists of any sound that may produce physiological or psychological damage and/or interfere with communication, work, rest, recreation, or sleep. Several noise measurement scales exist that are used to describe noise in a particular location. A decibel (dB) is a unit of measurement that indicates the relative intensity of a sound. Sound levels in dB are calculated on a logarithmic basis. An increase of 10 dB represents a 10‐fold increase in acoustic energy, while 20 dB is 100 times more intense and 30 dB is 1,000 times more intense. Each 10 dB increase in sound level is perceived as approximately a doubling of loudness; and similarly, each 10 dB decrease in sound level is perceived as half as loud. Sound intensity is normally measured through the A‐weighted sound level (dBA). This scale gives greater weight to the frequencies of sound to which the human ear is most sensitive. The A‐weighted sound level is the basis for 24‐hour sound measurements that better represent human sensitivity to sound at night. As noise spreads from a source, it loses energy so that the farther away the noise receiver is from the noise source, the lower the perceived noise level would be. Geometric spreading causes the sound level to attenuate or be reduced, resulting in a 6 dB reduction in the noise level for each doubling of distance from a single point source of noise to the noise sensitive receptor of concern. 427 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 100 Vibration Background Vibration refers to ground‐borne noise and perceptible motion. Ground‐borne vibration is almost exclusively a concern inside buildings and is rarely perceived as a problem where the motion may be discernible, but there is less adverse reaction without the effects associated with the shaking of a building. Vibration energy propagates from a source through intervening soil and rock layers to the foundations of nearby buildings. The vibration then propagates from the foundation throughout the remainder of the structure. Building vibration may be perceived by occupants as motion of building surfaces, the rattling of items on shelves or hanging on walls, or a low‐frequency rumbling noise, otherwise referred to as ground‐borne noise. Typically, sources that have the potential to generate ground‐borne noise are likely to produce airborne noise impacts that mask the radiated ground‐borne noise. The rumbling noise is caused by the vibrating walls, floors, and ceilings radiating sound waves. Annoyance from vibration often occurs when the vibration exceeds the threshold of perception by 10 dB or less. This is an order of magnitude below the damage threshold for normal buildings. Typical sources of ground‐borne vibration are construction activities (e.g., blasting, pile driving, and operating heavy‐duty earthmoving equipment) and occasional traffic on rough roads. Problems with ground‐borne vibration and noise from these sources are usually localized to areas within approximately 100 feet of the vibration source, although there are examples of ground‐borne vibration causing interference out to distances greater than 200 feet. When roadways are smooth, vibration from traffic, even heavy trucks, is rarely perceptible. For most projects, it is assumed that the roadway surface will be smooth enough that ground‐borne vibration from street traffic will not exceed the impact criteria; however, construction of the project could result in ground‐borne vibration that could be perceptible and annoying. Existing Noise Levels Major sources of noise on and adjacent to the project site include noise generated by vehicles on Tassajara Road, Wallis Ranch Road, and Rutherford Drive, and from aircraft flyovers, primarily from helicopters at the Parks Reserve Forces Training Area (RFTA or “Camp Parks”) and distant noise from other operations at Camp Parks. Surrounding Noise Sensitive Land Uses Certain land uses are considered more sensitive to noise than others. Examples of these include residential areas, educational facilities, hospitals, childcare facilities, and senior housing. The nearest noise sensitive uses are the single‐family residential buildings approximately 90 feet north of the project site, single‐family residential buildings approximately 100 feet to the east across Tassajara Road and Quarry Lane School approximately 150 feet to the east of the project site across Tassajara Road. 428 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 101 Regulatory Framework Federal and State Regulations Federal Transit Administration The criteria for environmental impacts resulting from ground‐borne vibration are based on the maximum levels for a single event. The guidelines within the FTA Manual have been used to determine vibration impacts (refer to Table A, below). Table A: Construction Vibration Damage Criteria Building Category PPV (in/sec) Reinforced concrete, steel, or timber (no plaster) 0.50 Engineered concrete and masonry (no plaster) 0.30 Non‐engineered timber and masonry buildings 0.20 Buildings extremely susceptible to vibration damage 0.12 Source: Transit Noise and Vibration Impact Assessment Manual (FTA 2018), Table 12‐3. FTA = Federal Transit Administration in/sec = inches per second PPV = peak particle velocity The FTA Manual guidelines show that a vibration level of up to 0.2 in/sec PPV is considered safe for non‐engineered timber and masonry buildings, and would not result in any construction vibration damage. Therefore, in order to be conservative, the 0.2 in/sec PPV threshold has been used when evaluating vibration impacts at the nearest structures to the site. Local Regulations City of Dublin General Plan The Noise Element of the City of Dublin General Plan establishes residential, commercial, and industrial land use compatibility standards for noise measured at the property line of the receiving land use. The land use compatibility noise criteria, as shown in Table B, provide the basis for decisions on location of land uses in relation to noise sources and for determining noise mitigation requirements. The Noise Element of the Dublin General Plan identifies "normally acceptable" noise levels for all schools, churches and nursing home uses as 60 dBA CNEL or less. Noise levels from 61‐70 CNEL are considered “conditionally acceptable”, while noise levels between 71‐80 CNEL are considered “normally unacceptable.” Noise levels over 80 dBA CNEL are considered clearly unacceptable for new development of these types of land uses. 429 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 102 Table A: City of Dublin Land Use/Noise Compatibility Standards (dBA CNEL) Land Use Category Normally Acceptable Conditionally Acceptable1 Normally Unacceptable Clearly Unacceptable Residential 60 or less 61‐70 71‐75 Over 75 Motels, hotels 60 or less 61‐70 71‐80 Over 80 Schools, churches, nursing homes 60 or less 61‐70 71‐80 Over 80 Neighborhood parks 60 or less 61‐65 66‐70 Over 70 Offices: retail commercial 70 or less 71‐75 76‐80 Over 80 Industrial 70 or less 71‐75 Over 75 ‐ Source: Dublin General Plan Noise Element, Table 9‐1, 2012 CNEL = Community Noise Equivalent Level 1 Conditionally acceptable exposure requires noise insulation features in building design. Conventional construction, but with closed windows and fresh air supply systems or air conditioning will normally suffice. Eastern Dublin Specific Plan As described in Section 6.4.2 of the Eastern Dublin Specific Plan, the primary source of noise in eastern Dublin is traffic along I‐580. The 60 dB contour for noise levels, which is considered the maximum normally acceptable level of residential uses and other sensitive uses extends approximately 2,000 feet north of the freeway. As specified in Policy 6‐44, development along the I‐580 frontage will be required to provide adequate mitigation to conform to the State Land Use Compatibility Standards for noise and policies and standards in the City of Dublin's Noise Element. City of Dublin Municipal Code The City of Dublin Municipal Code (Section 5.28.020) prohibits any person within the City from making any loud, or disturbing, or unnecessary, or unusual or habitual noise or any noise which annoys or disturbs or injures or endangers the health, repose, peace, or safety of any reasonable person of normal sensitivity present in the area. Section 8.36.060(C)(3) states that for lots 5,000 square feet or larger, mechanical equipment that generates noise when located within a required setback as allowed by this subsection, and within 10 feet of an existing or potential residence, or an existing paved patio area on adjoining property, shall be enclosed as necessary to reduce noise at the property line to a maximum of 50 dBA at any time. Previous CEQA Documents Eastern Dublin EIR The Eastern Dublin EIR identified potential significant impacts related to exposure of proposed housing to future roadway noise, exposure of existing residences to future roadway noise, exposure of proposed residential development to noise from future military training activities 430 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 103 at Camp Parks, exposure of existing and proposed residences to construction noise, and noise conflicts due to the adjacency of diverse land uses permitted by Plan policies supporting mixed‐ use development. Mitigation measures were identified to reduce most of these potential impacts to a less‐than‐significant level. Noise impacts associated with activities at Camp Parks and exposure of existing residences to future roadway noise were determined to be significant and unavoidable, even with implementation of mitigation. The impacts associated with exposure of existing and proposed development to airport noise was determined to be less than significant due to the distance of the project area from Livermore Municipal Airport. The following mitigation measures would apply to the proposed project: MM 3.10/4.0 Developers shall submit to the City a Construction Noise Management Program that identified measures to be taken to minimize impacts on existing planning area residents. The program will include a schedule for grading and other major noise‐ generating activities that will limit these activities to the shortest possible number of days. Hours of construction activities shall be limited in keeping with Dublin ordinances. The Program for construction vehicle access to the site shall minimize construction truck traffic through residential areas. If construction traffic must travel through residential areas, then a mitigation plan should be developed. The Program may include barriers, berms, or restrictions on hours. MM 3.10/5.0 In order to minimize the impact of construction noise, all operations should comply with local noise standards relating to construction activities. When construction occurs near residential areas, then it should be limited to normal daytime hours to minimize the impact. Stationary equipment should be adequately muffled and located as far away from sensitive receptors as possible. Dublin Ranch West SEIR Noise was addressed in the Initial Study for the Dublin Ranch West SEIR. No new or more severe impacts beyond those identified in the Eastern Dublin EIR were identified with implementation of the mitigation measures identified in the Eastern Dublin EIR. 2014 Addendum The 2014 Addendum determined that no new or more severe impacts related to noise would result from the Wallis Ranch/Trumark project. The 2014 Addendum acknowledged that the Wallis Ranch/Trumark project would contribute to cumulative noise conditions, including exposure of existing residences to roadway noise, which was determined to be significant and unavoidable. 431 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 104 Project Impacts and Mitigation Measures (a) Generate noise exceeding standards No new Impact. The following section addresses the short‐term construction and long‐term operational noise impacts of the proposed project. Short‐Term (Construction) Noise Impacts. Project construction would result in short‐term noise impacts. Maximum construction noise would be short‐term, generally intermittent depending on the construction phase, and variable depending on receiver distance from the active construction zone. The duration of noise impacts generally would be from one day to several days depending on the phase of construction. The level and types of noise impacts that would occur during construction are described below. Short‐term noise impacts would occur during grading and site preparation activities. Table C lists typical construction equipment noise levels (Lmax) recommended for noise impact assessments, based on a distance of 50 feet between the equipment and a noise receptor, obtained from the Federal Highway Administration (FHWA) Roadway Construction Noise Model. Construction‐related short‐term noise levels would be higher than existing ambient noise levels currently in the project area but would no longer occur once construction of the project is completed. Two types of short‐term noise impacts could occur during construction of the proposed project. The first type involves construction crew commutes and the transport of construction equipment and materials to the site, which would incrementally increase noise levels on roads leading to the site. As shown in Table C, there would be a relatively high single‐event noise exposure potential at a maximum level of 84 dBA Lmax with trucks passing at 50 feet. The second type of short‐term noise impact is related to noise generated during grading and construction on the project site. Construction is performed in discrete steps, or phases, each with its own mix of equipment and, consequently, its own noise characteristics. These various sequential phases would change the character of the noise generated on site. Therefore, the noise levels vary as construction progresses. Despite the variety in the type and size of construction equipment, similarities in the dominant noise sources and patterns of operation allow construction‐related noise ranges to be categorized by work phase. Table C lists maximum noise levels recommended for noise impact assessments for typical construction equipment, based on a distance of 50 feet between the equipment and a noise receptor. 432 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 105 Table C: Typical Maximum Construction Equipment Noise Levels (Lmax) Type of Equipment Acoustical Usage Factor Suggested Maximum Sound Levels for Analysis (dBA Lmax at 50 ft) Air Compressor 40 80 Backhoe 40 80 Crane 16 85 Excavator 40 85 Forklift 20 85 Generator 50 80 Grader 40 85 Loader 40 80 Paver 50 85 Roller 20 85 Scraper 40 85 Skid Steer Loader 40 80 Tractor 40 84 Trencher 50 82 Water Truck 40 84 Source: Highway Construction Noise Handbook (FHWA 2006). dBA = A‐weighted decibel FHWA = Federal Highway Administration ft = foot/feet HP = horsepower Lmax = maximum noise level Typical maximum noise levels range up to 87 dBA Lmax at 50 feet during the noisiest construction phases. The site preparation phase, including excavation and grading of the site, tends to generate the highest noise levels because earthmoving machinery is the noisiest construction equipment. Earthmoving equipment includes excavating machinery such as backfillers, bulldozers, draglines, and front loaders. Earthmoving and compacting equipment includes compactors, scrapers, and graders. Typical operating cycles for these types of construction equipment may involve 1 or 2 minutes of full‐power operation followed by 3 or 4 minutes at lower power settings. To provide a conservative estimate, the noise levels were calculated from the edge of the project site, whereas the construction activities would cover the entire site and often be further from sensitive receptors. Based on the typical construction equipment noise levels shown in Table C, noise levels associated with these pieces of construction equipment operating simultaneously would be approximately 88 dBA Leq at 50 feet. The closest sensitive receptors include residential uses located approximately 95 feet from the project site. At 95 feet, there would be a decrease of approximately 6 dBA, resulting in short‐ term construction noise levels associated approaching 82 dBA Leq which would exceed the City’s noise standards. While construction‐related short‐term noise levels have the potential to be 433 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 106 higher than existing ambient noise levels in the project area, the noise impacts would no longer occur once project construction is completed. The proposed project would be required to comply with MM 3.10/4.0 and MM 3.10/5.0 identified in the Eastern Dublin EIR, which require preparation and implementation of a construction noise management plan, proper muffling of construction equipment and limiting construction hours. In addition, the proposed project would be required to comply with the City of Dublin Noise Ordinance (Section 5.28 of the City’s Municipal Code). With adherence to the mitigation measures identified in the Eastern Dublin EIR and compliance with City standards for construction, there would be no new or substantially more severe significant impacts to short‐term noise impacts beyond what has been analyzed in the prior environmental documents. No additional analysis is required. Operational Noise Impacts. A characteristic of sound is that a doubling of a noise source is required in order to result in a perceptible (3 dBA or greater) increase in the resulting noise level. The proposed project would improve the existing site as a neighborhood park. Outdoor activity typically generates maximum noise levels of 70 dBA Lmax at 50 feet. Once operational, the project would not generate a significant number of new vehicle trips and therefore would not result in a doubling of traffic volumes along any roadway segment in the project vicinity and would not result in a perceptible increase in traffic noise levels at receptors in the project vicinity. Operation of the proposed project would not result in exposure of persons to or generation of noise levels in excess of standards established in the local general plan or noise ordinance, since the project is not expected to generate substantial vehicular traffic or other operational noise. Therefore, the proposed project would not result in exposure of persons to or generation of noise levels in excess of standards established in the local general plan or noise ordinance. No new impacts or substantially more severe significant impacts would occur. No additional analysis is required. (b) Generate excessive ground borne vibration or ground borne noise No New Impact. Common sources of ground borne vibration and noise include trains and construction activities such as blasting, pile driving, and operating heavy earthmoving equipment. Construction of the proposed project would involve site preparation, and construction activities but would not involve the use of construction equipment that would result in substantial ground borne vibration or ground borne noise on properties adjacent to the project site. No pile driving, blasting, or significant grading activities are proposed. Furthermore, operation of the proposed project would not generate substantial ground borne noise and vibration. Therefore, the project would not result in the exposure of persons to or generation of excessive ground borne noise and vibration. No new impacts or substantially more severe significant impacts would occur. No additional analysis is required. (c) Excessive noise level near a public or private airport No New Impact. The project site is not located within an airport land use plan, or within 2 miles of a public airport, public use airport, or private airport. The closest airports to the project site 434 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 107 are the Livermore Municipal Airport, located approximately 3.6 miles southeast of the project site and the Hayward Executive Airport, located approximately 20 miles west. The proposed project would include development of a community park. Proposed improvements would be largely at‐grade. As noted in the Eastern Dublin EIR and the Dublin Ranch West SEIR, the project site could be subject to overflight noise from Camp Parks; however, the proposed project would not result in residential development, this impact would not be substantially more severe than previously analyzed in the prior environmental documents. No new impacts or substantially more severe significant impacts would occur. No additional analysis is required. Source(s) Dublin, City of. 2017. City of Dublin General Plan, Adopted February 11, 1985 (Amended as of November 21, 2017). Dublin, City of. 2021. City of Dublin Municipal Code. May 18. Available online at: www.codepublishing.com/CA/Dublin/ (accessed June 25, 2021) Haag, Jerry. 2004. Dublin Ranch West Project, Final Supplemental Environmental Impact Report. November. Haag, Jerry. 2014. Wallis Ranch/Trumark Project PLPA 2013‐00035, Initial Study. April 22. Wallace Roberts & Todd. 2016. Eastern Dublin Specific Plan. January 7, 1994 (Updated September 20, 2016). Wallace Roberts & Todd. 1992. Final Environmental Impact Report, State Clearinghouse Number 91103064 Eastern Dublin General Plan Amendment and Specific Plan. December 7. 435 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 108 Population and Housing ENVIRONMENTAL IMPACTS Issues Potentially Significant Issues Potentially Significant Unless Mitigation Incorporated Less Than Significant Impact No New Impact 13. POPULATION AND HOUSING. Would the project: a. Induce substantial unplanned population growth in an area, either directly (for example, by proposing new homes and businesses) or indirectly (for example, through extension of roads or other infrastructure)? X b. Displace substantial numbers of existing people or housing, necessitating the construction of replacement housing elsewhere? X Environmental Setting According to the City of Dublin General Plan, in 2010, Dublin’s total population was estimated at 46,036 and represented 17 percent of the 269,437 residents in the Tri‐Valley area. In 2019, The United States Census Bureau estimated that the City of Dublin had approximately 64,826 people and 20,235 households. The project site consists of approximately 9 acres of undeveloped land. No residential units currently exist at the project site. Regulatory Framework Association of Bay Area Governments Projections 2040 ABAG is the regional planning agency for the San Francisco Bay Area. ABAG Projections 2040 (2018) is a growth forecast, which informs agencies such as MTC and BAAQMD for the purpose of project funding and regulatory decisions. The data for the projections were prepared in connection with Plan Bay Area 2040, adopted by ABAG and MTC in the summer of 2017. Data for this forecast are provided from collective regional General Plans, zoning codes, and growth management programs. This growth forecast is produced every four years with the Projections 2040 report being the most recent projection. These periodic updates include developing impacts of “smart growth” policies and incentives to improve future development trends in the region, such as a more balanced ratio of the number of jobs to houses. Plan Bay Area 2040 Plan Bay Area 2040 is the Bay Area’s Regional Transportation Plan and Sustainable Communities Strategy as mandated by Senate Bill 375, the Sustainable Communities and Climate Protection Act. Plan Bay Area 2040 is a limited and focused update to the 2013 Plan Bay Area and includes key economic, demographic, and financial trends from the last several years. Plan Bay Area 2040 was adopted by ABAG and the MTC in 2017. Plan Bay Area aims to 436 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 109 concentrate new population and employment growth in the region to areas with pre‐existing transportation infrastructure to ensure greenhouse gas reductions are met. Previous CEQA Documents Eastern Dublin EIR Section 3.2 in the Eastern Dublin EIR provides the demographics, housing and employment context for the Eastern Dublin Specific Plan. No impacts related to population or displacement of existing housing were identified. Growth‐inducing impacts associated with implementation of the Eastern Dublin Specific Plan were evaluated in Section 5.2 of the Eastern Dublin EIR. Growth‐inducing impacts were identified for utilities and community services. Dublin Ranch West SEIR The Dublin Ranch West SEIR determined that supplemental impacts resulting from the Dublin Ranch West project would be less than significant. Implementation of the Dublin Ranch West project would add approximately 428 residents, which would account for a 1 percent increase in the population anticipated for the Eastern Dublin Specific Plan area. This increase was determined to be less than significant. The Dublin Ranch West project proposed minor changes to the planned uses within the planning area; therefore, no supplemental impacts with regard to growth inducement was identified. 2014 Addendum The 2014 Addendum determined that no new or more severe impacts related to population and housing would result from the Wallis Ranch/Trumark project since development of the affected properties would be consistent with that envisioned in the Eastern Dublin Specific Plan and the City of Dublin General Plan and the Wallis Ranch/Trumark project would result in fewer dwelling units than were previously analyzed in the prior environmental documents. Project Impacts and Mitigation Measures (a) Population growth No New Impact. The proposed project would improve the project site as a neighborhood park. No new housing, commercial or industrial space would be developed as part of the proposed project. The proposed project would not result in the conversion of adjacent land uses, or provide access to previously inaccessible areas. It would not provide additional major infrastructure or increase the capacity of the existing water system. Therefore, the proposed project would not result in new significant or substantially more severe significant population growth than was analyzed and described in the prior environmental documents. No additional analysis is required. 437 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 110 (b) Housing and resident displacement No New Impact. The proposed project would not displace substantial numbers of existing housing or people, such that replacement housing would need to be constructed elsewhere, as the site is currently vacant. This potential impact would be considered less than significant. Therefore, the proposed project would not result in new significant or substantially more severe significant housing impacts than were analyzed in the prior environmental documents. No additional analysis is required. Source(s) Association of Bay Area Governments and Metropolitan Transportation Commission. 2018. Plan Bay Area Projections 2040 ‐ A Companion to Plan Bay Area 2040. November. Available online at: http://mtcmedia.s3.amazonaws.com/files/Projections_2040‐ABAG‐MTC‐ web.pdf (accessed June 25, 2021). Dublin, City of. 2017. City of Dublin General Plan, Adopted February 11, 1985 (Amended as of November 21, 2017). Haag, Jerry. 2004. Dublin Ranch West Project, Final Supplemental Environmental Impact Report. November. Haag, Jerry. 2014. Wallis Ranch/Trumark Project PLPA 2013‐00035, Initial Study. April 22. United States Census Bureau. QuickFacts. Dublin city, CA. Website: www.census.gov/quickfacts/dublincitycalifornia (accessed June 25, 2021). Wallace Roberts & Todd. 2016. Eastern Dublin Specific Plan. January 7, 1994 (Updated September 20, 2016). Wallace Roberts & Todd. 1992. Final Environmental Impact Report, State Clearinghouse Number 91103064 Eastern Dublin General Plan Amendment and Specific Plan. December 7. 438 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 111 Public Services ENVIRONMENTAL IMPACTS Issues Potentially Significant Issues Potentially Significant Unless Mitigation Incorporated Less Than Significant Impact No New Impact 14. PUBLIC SERVICES. Would the project result in substantial adverse physical impacts associated with the provision of new or physically altered governmental facilities or need for new or physical altered governmental facilities, the construction of which could cause significant environmental impacts, in order to maintain acceptable service ratios, response times, or other performance objectives for any of the public services: a. Fire protection? X b. Police protection? X c. Schools? X d. Parks? X e. Other public facilities? X Environmental Setting The proposed project is located within the City of Dublin and is served by the following existing public services. Fire Protection. Fire suppression, emergency medical and rescue services, and other life safety services are provided to the project area and site by the Alameda County Fire Department (ACFD). There are three fire stations in Dublin, with the closest to the project site being Fire Station No. 18 at 4800 Fallon Rd, approximately 1.25 miles southeast. Police Protection. The Alameda County Sherriff’s Office provides contracted police protection to the project area and project site. The Dublin Police Services headquarters are located at 6361 Clark Avenue, southwest of the project site. Schools. The project site is served by the Dublin Unified School District, which operates seven elementary, two middle, one K‐8 and three high schools within the City of Dublin. Parks. The City’s Public Works Department oversees the maintenance of parks and recreational facilities throughout the City. Library Services. The Dublin Library is operated by Alameda County Library, with additional funding from the City of Dublin. The Dublin Public Library is located at 200 Civic Plaza, southwest of the project site. 439 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 112 Regulatory Framework Federal and State Regulations California Fire Code The California Fire Code exists within Part 9 of the CBC, and includes measures for emergency planning preparation and safety. Examples of fire safety requirements include: installation of sprinklers in all high‐rise buildings; the establishment of fire resistance standards for fire doors, building materials, and particular types of construction; and the clearance of debris and vegetation within a prescribed distance from occupied structures in wildlife hazard areas. California Government Code Sections 65995 to 65998 (School Facilities) California Government Code Section 65996 exists to offset the impacts of certain types of development on school facilities by requiring payment of fees to the associated school district prior to receiving a building permit. The school district is therefore responsible for implementing specific methods for mitigating school impacts under the Government Code. Pursuant to California Government Code Section 65995, payment of school impact fees is considered to be full mitigation for reducing impacts on school facilities that would result from implementation of a project. Local Regulations City of Dublin General Plan Chapter 3 of the Land Use Element outlines policies and programs to provide open space both within and apart from development projects, which relate to the provision of park facilities in the City. Those policies are listed in Section 10, Land Use. Section 8.3.2 of the City of Dublin outlines the following policies and programs related to fire hazards and fire protection: Guiding Policy 8.3.2.1.A.1. Require special precautions against fire as a condition of development approval in the western hills and elsewhere in the Extended planning Areas where proposed development would interface with open space. Implementing Policy 8.3.2.1.B.1. Continue to enforce the City’s wild land urban interface regulations. Section 4.2 of the City of Dublin outlines policies and programs related to public schools. As the proposed project would develop a community park to serve the existing neighborhood. Policies related to schools would not apply to the proposed project. 440 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 113 Eastern Dublin Specific Plan Chapter 8.0 of the Eastern Dublin Specific Plan outlines goals, policies and programs to ensure the provision of adequate public services and community facilities in Eastern Dublin. The following policies from the Eastern Dublin Specific Plan related to police and fire services are applicable to the proposed project: Policy 8‐5: Time the construction of new facilities to coincide with new service demand in order to avoid periods of reduced service efficiency. The first station will be sited and construction completed prior to completion of initial development in the planning area. Policy 8‐4: Provide additional personnel and facilities and revise "beats" as needed in order to establish and maintain City standards for police protection service in eastern Dublin. Previous CEQA Documents Eastern Dublin EIR The Eastern Dublin EIR identified potential significant impacts related to increased demand for police and fire protection services, fire response to outlying areas, exposure to wildlands hazards, increased demand for schools and school overcrowding, increased demand for parks and impacts on existing park and trail facilities. Mitigation measures were identified to reduce potential impacts to a less‐than‐significant level. Dublin Ranch West SEIR Public services were addressed in the Initial Study for the Dublin Ranch West SEIR. No new or more severe impacts beyond those identified in the Eastern Dublin EIR were identified with implementation of the mitigation measures identified in the Eastern Dublin EIR. 2014 Addendum The 2014 Addendum determined that no new or more severe impacts related to public services would result from the Wallis Ranch project since the project would be required to adhere to previously adopted mitigation measures, including payment of public facility impact fees, and compliance with ACFD and Police Department requirements. Project Impacts and Mitigation Measures (a) Fire, police, schools, parks and other public facilities No New Impact. Implementation of the proposed project would improve the site as a neighborhood park to serve the adjacent residential neighborhood. Use of the site could increase as a result of proposed improvements. However, visitors to the site are anticipated to come primarily from the local neighborhood, those people who generally reside within walking 441 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 114 distance of the project site. Because proposed improvements would be for recreation, and would not include housing units or other structures, the incremental increase in demand for public services would not be significant and would not exceed the physical and financial capabilities of the ACFD or the Alameda County Sherriff’s Office, resulting in the need for new or expanded police protection services. Implementation of the proposed project would not result in any local or regional population increase. Therefore, the project would not require construction of new schools, result in schools exceeding their capacities, or result in substantial adverse physical impacts associated with the provision of other public facilities. Therefore, the proposed project would not result in new significant or substantially more severe significant impacts related to public services than were analyzed and described in the prior environmental documents. No additional analysis is required. Source(s) Dublin, City of. 2017. City of Dublin General Plan, Adopted February 11, 1985 (Amended as of November 21, 2017). Haag, Jerry. 2004. Dublin Ranch West Project, Final Supplemental Environmental Impact Report. November. Haag, Jerry. 2014. Wallis Ranch/Trumark Project PLPA 2013‐00035, Initial Study. April 22. Wallace Roberts & Todd. 2016. Eastern Dublin Specific Plan. January 7, 1994 (Updated September 20, 2016). Wallace Roberts & Todd. 1992. Final Environmental Impact Report, State Clearinghouse Number 91103064 Eastern Dublin General Plan Amendment and Specific Plan. December 7. 442 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 115 Recreation ENVIRONMENTAL IMPACTS Issues Potentially Significant Issues Potentially Significant Unless Mitigation Incorporated Less Than Significant Impact No New Impact 15. RECREATION. Would the project: a. Increase the use of existing neighborhood and regional parks or other recreational facilities such that substantial physical deterioration of the facility would occur or be accelerated? X b. Include recreational facilities or require the construction or expansion of recreational facilities which might have an adverse physical effect on the environment? X Environmental Setting The City of Dublin has a variety of outdoor recreational sites including neighborhood parks, community parks, community facilities, open space areas and a series of trail networks. According to the City of Dublin Parks and Recreation Master Plan, the City of Dublin currently has 18 parks, 5 deeded park sites, and 6 school parks and City‐owned open space areas that account for nearly 233 acres of dedicated open space and developed park land. In addition, the City has over 59 acres of undeveloped parkland that has either been offered for dedication by landowners or acquired by the City. In addition, the East Bay Regional Park District (EBRPD) operates the Dublin Hills Regional Park, a large open space park with regional trail connections. The Iron Horse Trail runs along the Union Pacific/Southern Pacific Railroad right‐of‐way, connecting Dublin, the Dublin/Pleasanton BART station and the City of Pleasanton. Regulatory Framework City of Dublin General Plan Chapter 3 of the Land Use Element outlines policies and programs to provide open space both within and apart from development projects. The following goals and policies related to parks and recreation that are applicable to the proposed project: Guiding Policy 3.4.1.A.1. Expand park area throughout the Primary and Extended Planning Areas to serve new development. Guiding Policy 3.4.1.A.3. Restrict structures on the hillsides that appear to project above major ridgelines. The present undisturbed natural ridgelines as seen from the Primary Planning Area and key travel corridors are an essential component of Dublin’s appearance as a freestanding city ringed by open hills. 443 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 116 Implementing Policy 3.4.1.B.1. Acquire and improve parklands in conformance with the standards and policies in the City’s Parks and Recreation Master Plan. Implementing Policy 3.4.1B.2. Continue to maintain and periodically update the Citywide Parks and Recreation Master Plan. The Master Plan shall provide specific standards for acquiring parkland to support growth planned in the Land Use Element. Implementing Policy 3.4.1.B.3. The policies set forth below, as implemented through the Parks and Recreation Master Plan and development approvals, constitute the action program for preserving and providing open space for outdoor recreation. Guiding Policy 3.4.2.A.1. Provide active parks and facilities which are adequate to meet citywide needs for open space, cultural, and sports facilities, as well as the local needs of the Eastern Extended Planning Area. Guiding Policy 3.4.2.A.2. Establish a trail system with connections to planned regional and sub‐regional systems, including north‐south corridors such as East Bay Regional Park District’s trail along Tassajara Creek north to Mt. Diablo State Park. Guiding Policy 3.4.2.A.3. Using the natural stream corridors and major ridgelines, establish a comprehensive, integrated trail network within the Planning Area that permits safe and convenient pedestrian and bicycle access within urban areas and between urban areas and open space areas. Per the 2005 Fallon Village amendment, in order to preserve biological resources, trails in Fallon Village will not be placed along ridgelines and in stream corridors. Implementing Policy 3.4.2.B.1. Require land dedication and improvements for the parks designated in the General Plan for the Eastern Extended Planning Area and based on a standard of 5 net acres per 1,000 residents. Collect in‐lieu park fees as required by City policies. Implementing Policy 3.4.2.B.2. Require land dedication and improvements for trails along designated stream corridors. Eastern Dublin Specific Plan The Eastern Dublin Specific Plan designates a broad range of open space and park areas to provide for a variety of passive and active recreation uses, including approximately 240 acres designated for developed parkland. The following policies from the Eastern Dublin Specific Plan are applicable to the proposed project: 444 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 117 Policy 4‐29: Ensure that park development in eastern Dublin is consistent with the standards and phasing recommended in the City of Dublin's Recreation and Parks Master Plan, and provides a full range of recreational activities from intense active sports to passive open space enjoyment. Policy 4‐30: Ensure, as part of the approval process, that each new development provides its fair share of planned open space, parklands, and trail corridors, as shown on Figure 4.1. Policy 4‐31: Establish a convenient, multi‐use, all‐weather network of trails, including bike lanes, to link planning area parks, recreation facilities, schools, employment centers and major open space areas to each other and to the surrounding community. City of Dublin Municipal Code Chapter 9.28 of the City’s Municipal Code requires the dedication of lands or payment of in‐lieu fees (or a combination of both) for neighborhood and community park or recreational purposes as a condition of approval for a residential subdivision. The City requires the dedication of 5‐ acres of park land for every 1,000 persons residing within the City. The amount of land to be dedicated, or fees to be paid, relates to the use of the park and recreation facilities by the future inhabitants of the subdivision, as calculated using the metrics established in Chapter 9.28. City of Dublin Parks and Recreation Master Plan The City of Dublin Parks and Recreation Master Plan establishes goals, standards, guiding policies, and action programs to guide the City of Dublin in the acquisition, development and management (operations and maintenance) of Dublin’s park and recreation facilities through the ultimate build‐out of the City in accordance with the General Plan. The Master Plan outlines specific standards for developing, maintaining, and operating the City’s park and recreation system. The Master Plan designates Wallis Ranch Community Park as an “Active Community Park.” As defined in the Master Plan, “Active Community Parks should offer a variety of recreational opportunities that attract a wide range of local age groups and interests. Active Community Parks should feature large open space areas, unique natural, historic, and/ or cultural areas as well as group picnic areas, bicycling and hiking trails, sports facilities, dog runs, community facilities, and other unique features or facilities.” 445 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 118 Previous CEQA Documents Eastern Dublin EIR The Eastern Dublin EIR identified potentially significant impacts related to increased demand for park facilities, fiscal impacts associated with the provision of new park and recreation facilities, and impacts on the regional trail system and open space connections. Mitigation measures were identified to reduce potential impacts to a less than significant level. Dublin Ranch West SEIR The Dublin Ranch West SEIR identified a potentially significant supplemental impact associated with the inadequacy of local neighborhood park acreage within the proposed development, which would be inconsistent with the provisions in the City of Dublin Park and Recreation Master Plan. Supplemental Mitigation Measure PARK‐1was identified to reduce this impact to a less than significant level; Supplemental Mitigation Measure PARK‐1: Prior to tentative map or Stage 2 Development Plan approval, whichever occurs first, the Project developer shall either a) Revise the land use program for the Dublin Ranch West site to provide an additional 1.04 net acres of Neighborhood Park land use designation; or b) Provide 1.9 net acres of Neighborhood Park land use designation in close proximity to the project site. 2014 Addendum The 2014 Addendum determined that no new or more severe impacts related to recreation would result from the Wallis Ranch project since the project would dedicate a public park site and provide one private park consistent with Supplemental Mitigation Measure PARK‐1 identified in the Dublin Ranch West SEIR. Project Impacts and Mitigation Measures (a) Increase the use of existing recreation facilities causing deterioration No New Impact. The proposed project would develop the existing site as a community park, consistent with the City of Dublin Parks and Recreation Master Plan and in compliance with the requirements for provision of park land outlined in the City’s Municipal Code. In accordance with Supplemental Mitigation Measure PARK‐1, identified in the Dublin Ranch West SEIR, requires the provision of an additional 1.04‐acre of Neighborhood Park area within the Dublin Ranch West site in order to compensate for the elimination of planned parkland designated in the Eastern Dublin Specific Plan and to bring the project into compliance with City park standards. Implementation of the proposed project as a community park would meet the intent 446 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 119 of the mitigation requirement to provide adequate park facilities to serve the proposed development. The proposed project would serve existing demand from residents of the City and the adjacent residential neighborhood. The proposed project would have a beneficial impact to existing recreational facilities, as use at other existing neighborhood and regional parks or other recreational facilities may be reduced. Therefore, no new significant or substantially more severe significant impacts related to existing recreation facilities would result from the proposed project. No additional analysis is required. (b) Propose, require new facilities that cause physical effect No New Impact. Refer to Section 15.a. The proposed project would improve the project site for use as a community park, consistent with the City of Dublin Parks and Recreation Master Plan and in compliance with the requirements for provision of park land outlined in the City’s Municipal Code. The intent of the planning process was to minimize adverse physical effects on the environment. Potential adverse effects on the environment related to the development of the proposed project have been evaluated in this Initial Study checklist. No new significant or substantially more severe significant impacts related to new recreation facilities would result from the proposed project. No additional analysis is required. Source(s) Dublin, City of. 2015. City of Dublin Parks and Recreation Master Plan. Dublin, City of. 2017. City of Dublin General Plan, Adopted February 11, 1985 (Amended as of November 21, 2017). Dublin, City of. 2021. City of Dublin Municipal Code. May 18. Available online at: www.codepublishing.com/CA/Dublin/ (accessed June 25, 2021) Haag, Jerry. 2004. Dublin Ranch West Project, Final Supplemental Environmental Impact Report. November. Haag, Jerry. 2014. Wallis Ranch/Trumark Project PLPA 2013‐00035, Initial Study. April 22. Wallace Roberts & Todd. 2016. Eastern Dublin Specific Plan. January 7, 1994 (Updated September 20, 2016). Wallace Roberts & Todd. 1992. Final Environmental Impact Report, State Clearinghouse Number 91103064 Eastern Dublin General Plan Amendment and Specific Plan. December 7. 447 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 120 Transportation ENVIRONMENTAL IMPACTS Issues Potentially Significant Issues Potentially Significant Unless Mitigation Incorporated Less Than Significant Impact No New Impact 16. TRANSPORTATION/TRAFFIC. Would the project: a. Conflict with a program, plan, ordinance or policy addressing the circulation system, including transit, roadway, bicycle and pedestrian facilities? X b. Would the project conflict or be inconsistent with CEQA Guidelines section 15064.3, subdivision (b)? X c. Substantially increase hazards due to a geometric design feature (e.g., sharp curves or dangerous intersections) or incompatible uses (e.g., farm equipment)? X d. Result in inadequate emergency access? X Environmental Setting Access to the proposed project site is provide by Tassajara Road, Wallis Ranch Road, and Rutherford Drive. Tassajara Road is an arterial road that provides access from southern Contra Costa County to I‐580 and further south into Alameda County. It is four lanes wide from I‐580 to Dublin Ranch Road. Wallis Ranch Road and Rutherford Drive are local residential roads that provide access from Tassajara Road to the existing residential development. Both of these roadways provide on‐street parking and one travel lane in each direction. The two intersections from Tassajara Road in the vicinity of the project site are signalized. Sidewalks and Class II bike lanes are provided along Tassajara Road adjacent to the project site. Sidewalks are also provide along the both Wallis Ranch Road and Rutherford Drive, providing pedestrian connections to the various park improvements. Transit service to the project site is provided by the Livermore/Amador Valley Transit Authority (LAVTA), which provides bus service in Dublin and throughout the Tri‐Valley area. LAVTA Route 2 provides hourly service during peak times on weekdays to the following locations: East Dublin/Pleasanton BART, Hacienda Crossings, Dublin Ranch, Silvera Ranch, Positano and Central Parkway; however, service on this route has been suspended since April 6, 2020, as a result of service reductions implemented due to pandemic related ridership losses. An existing transit stop is located along Tassajara Road adjacent to the project site. 448 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 121 Regulatory Framework Regional and Local Regulations Metropolitan Transportation Commission MTC conducts transportation planning, financing, and coordination for the San Francisco Bay Area, including Alameda County. MTC periodically updates the Regional Transportation Plan, which plans for the development of mass transit, highway, airport, seaport, railroad, bike, and pedestrian facilities. The most current Regional Transportation Plan, Transportation 2035, budgets funding for transportation‐related projects. In addition, MTC and ABAG adopted Plan Bay Area 2040 in 2017, which is a State‐mandated transportation and land use plan. The Sustainable Communities Strategy outlines a sustainable communities strategy for the region, which aims to integrate transportation, land use, and housing to meet GHG reduction targets established by the California Air Resources Board. Alameda County Congestion Management Program The Alameda County Transportation Commission (Alameda CTC) is an independent special district that aims to provide sustainable, accessible, and community‐focused transportation opportunities. The Alameda CTC is the county’s congestion management agency, providing countywide transportation planning, design and construction of specific highway, pedestrian, and bicycle improvement projects, as well as the promotion of transit‐oriented development. In accordance with California Statute, Government code 65088, the Alameda CTC prepares the Alameda County Congestion Management Program (CMP), which measures the performance of the county’s multi‐modal transportation system, addresses roadway congestion, and connects transportation and land use. Alameda CTC also maintains a countywide travel mode in compliance with Plan Bay Area 2040 and CMP legislation. The Alameda County CMP contains the following five mandatory elements: (1) level of service monitoring; (2) performance; (3) travel demand management; (4) land use analysis program; and (5) capital improvements. The Alameda CTC has also developed information related to Senate Bill 743 and tools for measuring and reducing vehicle miles travelled. City of Dublin General Plan Chapter 5.0, Land Use and Circulation: Circulation and Scenic Highways Element, identifies the City’s transportation and roadway policies. As described in the City of Dublin General Plan, the City aims to provide a comprehensive circulation network that supports multiple modes of transportation including private vehicles, transit, cycling, and walking. The proposed project would be accessed by existing roadways in the project area and would not modify any existing roadways. The following policies from the City of Dublin General Plan relate to the proposed project: 449 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 122 Implementing Policy 5.2.2.B.2.Design and construct all roads in the City’s circulation network as defined in Figure 5‐1 as well as bicycle and pedestrian networks as defined in the City of Dublin Bicycle and Pedestrian Master Plan. Guiding Policy 5.2.3.A.1. Provide an integrated multi‐modal circulation system that provides efficient vehicular circulation while providing a design that allows safe and convenient travel along and across streets for all users, including pedestrians, bicyclists, persons with disabilities, seniors, children, youth, and families; and encourages pedestrian, bicycle, transit, and other non‐automobile transportation alternatives. Guiding Policy 5.4.3.A.1. Plan for all users by creating and maintaining Complete Streets that provide safe, comfortable, and convenient travel along and across streets (including streets, roads, highways, bridges, and other portions of the transportation system) through a comprehensive, integrated transportation network that meets the requirements of currently adopted transportation plans and serves all categories of users. Guiding Policy 5.5.1.A.1. Provide safe, continuous, comfortable and convenient bikeways throughout the City. Guiding Policy 5.5.1.A.2. Improve and maintain bikeways and pedestrian facilities and support facilities in conformance with the recommendations in the Dublin Bicycle and Pedestrian Master Plan. Guiding Policy 5.5.1.A.4. Provide comfortable, safe, and convenient walking routes throughout the City and, in particular, to key destinations such as Downtown Dublin, the BART Stations, schools, parks, and commercial centers. Implementing Policy 5.5.1.B.1. Complete the bikeways systems illustrated on Figures 5‐ 3a and 5‐3b. Implementing Policy 5.5.1.B.2. Improve bikeways, bicycle support facilities, and pedestrian facilities in accordance with the Dublin Bicycle and Pedestrian Master Plan in conjunction with development proposals. Implementing Policy 5.5.1.B.3. Ensure on‐going maintenance of bikeways, bicycle support facilities and pedestrian facilities that are intended for public use and located on private property in conjunction with development proposals. Implementing Policy 5.75.1.B.2. Implement the Eastern Dublin Scenic Corridors Policies and Standards for projects within the Eastern Extended Planning Area. 450 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 123 Eastern Dublin Specific Plan Chapter 5.0 of the Eastern Dublin Specific Plan outlines goals, policies and programs to provide for an integrated, multi‐modal circulation system that reduces potential traffic impacts by accommodating alternative modes of transportation including walking, bicycles, transit and ridesharing. The following policies from the Eastern Dublin Specific Plan relate to the proposed project: Policy 5‐15: Provide a north‐south trail along Tassajara Creek, and trails along other stream corridors as shown on the Pedestrian and Bicycle System map. Policy 5‐17: Establish a bicycle circulation system which helps to serve the need for non‐ motorized transportation and recreation in eastern Dublin that is consistent with the Dublin Bicycle and Pedestrian Master Plan. Policy 5‐18: Provide convenient and secure bicycle parking and support facilities at key destinations in eastern Dublin, such as schools, recreation areas, transit stops and commercial centers. Policy 5‐19: Parking requirements in eastern Dublin shall be kept to a minimum consistent with actual parking needs. Allowance shall be made for shared parking in mixed‐use areas. Parking requirements may be reduced wherever it can be demonstrated that use of alternative transportation will reduce parking demand. Policy 5‐20: Encourage on‐street parking on residential collector and local residential streets. Allow on‐street parking on lower volume arterial streets within commercial areas. City of Dublin Bicycle and Pedestrian Master Plan The City of Dublin Bicycle and Pedestrian Master Plan provides policies, network plans, prioritized project lists, support programs, and best practice design guidelines for bicycling and walking in Dublin. As shown in Figure 5‐2 of the Plan, Dublin Existing & Proposed Bikeways, Class IIA Bicycle Lanes are proposed along Tassajara Road and a Class I Shared‐Use Path, the Tassajara Creek Trail, is proposed along Tassajara Creek in proximity to the project site. Previous CEQA Documents Eastern Dublin EIR The Eastern Dublin EIR identified potentially significant impacts related to increased traffic associated with implementation of the Eastern Dublin Specific Plan, including impacts to freeway, intersection, and roadway operations, transit service extensions, and potential safety hazards for pedestrians and bicycles at street crossings. Mitigation measures were identified to 451 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 124 reduce most transportation impacts to a less than significant level. These mitigation measures require construction of new roadways, widening and existing roadways, and improvements to local freeway facilities to accommodate increased vehicle traffic associated with proposed development in Eastern Dublin. Several traffic impacts were determined to be significant and unavoidable, even with implementation of mitigation. These impacts include impacts to I‐580 between Tassajara Road and Airway Boulevard (Impact 3.3/B), cumulative freeway impacts (Impact 3.3E), impacts to the Santa Rita Road/I‐580 eastbound ramps (Impact 3.3/I) and cumulative impacts to Tassajara Road (Impact 3.3/N). Dublin Ranch West SEIR The Dublin Ranch West SEIR determined that implementation of the Dublin Ranch West project would result in two potentially significant supplemental impacts associated with traffic operations and safety along Tassajara Road. The following supplemental mitigation measures were identified to reduce potential traffic impacts to less than significant: Supplemental Mitigation Measure TRA‐1: The Project developer shall dedicate right‐of‐ way along the Project frontage and widen Tassajara Road to four lanes between North Dublin Ranch Drive and Project Northern Access to improve roadway segments near the Project. Supplemental Mitigation Measure TRA‐2: The Stage 1 Development Plan for the Dublin Ranch West Project shall include the following safety features. c) Install traffic signals at the two Project access roadways due to safety considerations along Tassajara Road. d) Provide an eastbound right‐turn capacity from Tassajara Road onto the Project main access roadway to accommodate vehicles during the a.m. peak hour. e) Provide northbound left‐turn capacity from Tassajara Road onto the Project main access roadway, considering anticipated traffic movements to access the Project site during the p.m. peak hour. f) Provide an adequate northbound left‐turn lane from Tassajara Road onto the Project southern access roadway, considering anticipated traffic movements during the p.m. peak hour. g) Provide an appropriate southbound right‐turn pocket with an adequate taper Tassajara Road at both access roadways due to safety considerations. 452 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 125 2014 Addendum The 2014 Addendum determined that no new or more severe impacts related to transportation would result from the Wallis Ranch project than were previously analyzed in the prior environmental documents. The 2014 Addendum acknowledged that the project would continue to contribute to significant and unavoidable cumulative project impacts as part of the larger Eastern Dublin project, including impacts to I‐580 between I‐680 and Hacienda Drive, the Santa Rita Road/I‐580 eastbound ramps, the Dublin Boulevard/Hacienda Drive and Dublin Boulevard/Tassajara Road intersections, and other impacts to Tassajara Road. Project Impacts and Mitigation Measures (a) Conflict with applicable transportation plans standards, including bicycle and pedestrian facilities No New Impact. The Initial Study prepared to support the 2014 Addendum previously evaluated the transportation circulation element of the Wallis Ranch/Trumark Project which included a public park of about 10 acres. Details of amenities included in this park were not known at the time but most parks have amenities including sports courts, picnic facilities, and playgrounds. An assessment was made of the proposed project’s amenities to determine if there were any non‐standard amenities that would result in additional trip generation not typical of a park of about 9‐10 acres. Based on the assessment of the project’s development plan, the proposed project is not proposing any park amenities that would result in a different trip generation than similar parks in the City of Dublin. Additionally, the project is not proposing any changes to transportation access and circulation in the area. Since the proposed project is a slightly smaller than what was previously studied (about 9 acres versus about 10 acres), does not include non‐standard uses that would result in increased trip generation, and does not alter the transportation circulation system, the proposed project would not result in new impacts or substantially more severe significant impacts than were analyzed in the prior environmental documents. The proposed project would not alter or interfere with transit, bicycle or pedestrian facilities. The proposed project would maintain existing sidewalks along Tassajara Road, Wallis Ranch Road, and Rutherford Drive. Pathways within the park would provide pedestrian and bicycle connections to the various park improvements. Impacts to bicyclists, pedestrians, and transit service providers resulting from implementation of the proposed project would remain less than significant and the proposed project would not result in new significant or substantially more severe impacts related to alternative forms of transportation beyond those analyzed in the prior environmental documents. No additional analysis is required. (b) Conflict with CEQA Section 15064.3 (b) No New Impact. The topic of the project’s contribution to vehicle miles traveled (VMT) was not analyzed in the Eastern Dublin EIR, Dublin Ranch West SEIR or 2014 Addendum. This impact is 453 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 126 not required to be analyzed unless it constitutes new information of substantial importance that was not known and could not have been known at the time the previous environmental documents were certified as complete (Public Resources Code Section 21166 and CEQA Guidelines Section 15162 and 15163). The impact of increased traffic was analyzed using other methods at the time of certification of the Eastern Dublin EIR, Dublin Ranch West SEIR and 2014 Addendum. Under CEQA standards, it is not considered new information that requires analysis in a Supplemental EIR or negative declaration. Therefore, no supplemental environmental analysis of the project’s impacts on this issue is required under CEQA. (c) Substantially increase hazards due to a design feature No New Impact. The proposed project would provide entries to the proposed park elements along existing roadways, including a proposed parking area off of Rutherford Drive. Proposed vehicular access would not change the layout of the roadways in the project vicinity. The design, construction, and maintenance of project site access locations would be in compliance with the City’s Municipal Code. Therefore, the proposed project would not result in new significant or substantially more severe significant impacts beyond those already analyzed in the prior environmental documents. No additional analysis is required. (d) Result in inadequate emergency access No New Impact. The proposed project would not result in inadequate emergency access. Emergency vehicle access to the project site would continue to be provided via Tassajara Road, Wallis Ranch Road, and Rutherford Drive. The design, construction, and maintenance of project site access locations would be in compliance with the City’s Municipal Code and would be required to meet all emergency access standards. In addition, through Site Plan Review, emergency services would review proposed plans to ensure that emergency vehicle access and circulation is adequate. Therefore, the proposed project would not result in new significant or substantially more severe significant impacts beyond those already analyzed in the prior environmental documents. No additional analysis is required. Source(s) Alameda County Transportation Commission. 2021. Congestion Management Program webpage: www.alamedactc.org/planning/congestion‐management‐program/ (Accessed June 26, 2021). Dublin, City of. 2014. City of Dublin Bicycle and Pedestrian Master Plan. Dublin, City of. 2015. City of Dublin Parks and Recreation Master Plan. Dublin, City of. 2017. City of Dublin General Plan, Adopted February 11, 1985 (Amended as of November 21, 2017). 454 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 127 Dublin, City of. 2021. City of Dublin Municipal Code. May 18. Available online at: www.codepublishing.com/CA/Dublin/ (accessed June 25, 2021) Haag, Jerry. 2004. Dublin Ranch West Project, Final Supplemental Environmental Impact Report. November. Haag, Jerry. 2014. Wallis Ranch/Trumark Project PLPA 2013‐00035, Initial Study. April 22. Livermore Valley Transit Authority. 2021. Route 2 webpage: www.wheelsbus.com/route/route‐ 2/ (Accessed June 26, 2021). Wallace Roberts & Todd. 2016. Eastern Dublin Specific Plan. January 7, 1994 (Updated September 20, 2016). Wallace Roberts & Todd. 1992. Final Environmental Impact Report, State Clearinghouse Number 91103064 Eastern Dublin General Plan Amendment and Specific Plan. December 7. 455 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 128 Tribal Cultural Resources Project Impacts and Mitigation Measures (a) Listed or eligible for listing in the California Register of Historical Resources or significant pursuant to criteria set forth in subdivision (c) of Public Resources Code Section 5024.1 The topic of the project’s potential impacts to tribal cultural resources was not specifically analyzed in the Eastern Dublin EIR, the Dublin Ranch West SEIR, or the 2014 Addendum. However, the Eastern Dublin EIR, the Dublin Ranch West SEIR, and the 2014 Addendum analyzed prehistoric and historic resources and included mitigation measures related to historical and archaeological resources and human remains. These measures are listed in the cultural resources section of this Initial Study Checklist. Additionally, the provisions of Assembly Bill 52 only apply to projects that require public noticing. For an EIR certified prior to July 2015, an Addendum to that EIR does not require consultation pursuant to AB 52. Therefore, the proposed project would not result in significant impact to tribal cultural resources. 456 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 129 Utilities and Service Systems ENVIRONMENTAL IMPACTS Issues Potentially Significant Issues Potentially Significant Unless Mitigation Incorporated Less Than Significant Impact No New Impact 18. UTILITIES AND SERVICE SYSTEMS. Would the project: a. Require or result in the relocation or construction of new or expanded water, wastewater treatment or storm water drainage, electric power, natural gas, or telecommunications facilities the construction or relocation of which could cause significant environmental effects? X b. Have sufficient water supplies available to serve the project and reasonably foreseeable future development during normal, dry and multiple dry years? X c. Result in a determination by the wastewater treatment provider which serves or may serve the project that it has adequate capacity to serve the project projected demand in addition to the provider’s existing commitments? X d. Generate solid waste in excess of State or local standards, or in excess of the capacity of local infrastructure, or otherwise impair the attainment of solid waste reduction goals? X e. Comply with federal, state, and local statutes and regulations related to solid waste? X Environmental Setting A variety of local and regional providers in this area operate and maintain utility and service system facilities associated with electricity, water, stormwater, wastewater, solid waste, communications and natural gas. Water. The Dublin San Ramon Services District (DSRSD) provides water service at the project site. DSRSD is responsible for providing both potable and recycled water to the City of Dublin, and the Dougherty Valley area of the City of San Ramon in Contra Costa County. DSRSD’s water service area also includes Camp Parks, the Federal Correctional Institution (FCI), and Alameda County’s Santa Rita Jail. Zone 7 supplies treated potable water to DSRSD. Treated potable water enters DSRSD’s distribution system from five metered turnouts from the Zone 7 transmission system. To reduce the demand for potable water, DSRSD promotes water recycling and is a member of the WaterReuse Association. In 1995, DSRSD and EBMUD, through a joint powers agreement, formed the DSRSD‐EBMUD Recycled Water Authority (DERWA). DERWA serves as a wholesaler to deliver recycled water to DSRSD and EBMUD, who in turn deliver the recycled water to their 457 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 130 respective service areas. DERWA’s San Ramon Valley Recycled Water Project (SRVRWP) provides a backbone distribution system that delivers recycled water to both DSRSD and EBMUD distribution systems. DSRSD’s recycled water treatment facilities delivers recycled water to the SRVRWP. Recycled water is produced at DSRSD’s wastewater treatment plant at the Recycled Water Treatment Facility (RWTF). The RWTF produces recycled water that meets the California Title 22 requirements for unrestricted reuse. Wastewater. Wastewater collection and treatment services are also provided by DSRSD for the City of Dublin, City of Pleasanton, Camp Parks, FCI, Santa Rita Jail, and the southern portion of San Ramon. DSRSD owns and operates a wastewater treatment plant in Pleasanton that has a capacity of 17 million gallons per day (MGD). The existing wastewater service area encompasses approximately 13,340 acres, or 20.85 square miles. Within the wastewater service area there are currently 207 miles of gravity mains, one permanent lift station, and one temporary lift station. The permanent lift station has 26 feet of force main. Stormwater. Drainage and flood control in the Eastern Dublin area is the responsibility of the City of Dublin and Zone 7. Zone 7 is responsible for master planning, overseeing construction coordination and maintaining major storm drain channels and culverts in Eastern Dublin. The City has jurisdiction and maintenance responsibility for local storm drains that discharge to the Zone 7 flood control system. Runoff from the project area drains to Tassajara Creek, which flows south to connect with Zone 7 facilities south of I‐580. Electricity. The Pacific Gas and Electric Company (PG&E) provides electric and natural gas service to the San Francisco Bay region. As described in the Eastern Dublin Specific Plan, PG&E has major electrical services to the old Santa Rita facility, and minor lines to existing homes. A PG&E gas pipeline parallels I‐580 to the south, crossing I‐580 at Tassajara Road and proceeding west along the north side of the freeway. A regulator station exists at the north side of this I‐ 580 crossing, and is the connection point for the gas distribution system for the Eastern Dublin area. Solid Waste. The City of Dublin enters into a Franchise Agreement with a private solid waste collection company for residential and commercial garbage collection. The City also has a comprehensive recycling program that collects both recycling and organics. All single family residences and commercial businesses are provided with recycling containers and all multi‐ family residences have access to recycling services. Solid waste generated within the City is deposited at the Altamont Landfill which has a total estimated permitted capacity of 62 million cubic yards. The Altamont Landfill is approximately 26 percent full and is estimated to reach capacity in January 2029. 458 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 131 Regulatory Framework Federal and State Regulations California Urban Water Management Planning Act Under the California Water Code and Urban Water Management Planning Act of 1983, all California urban water suppliers are required to prepare and adopt an Urban Water Management Plan (UWMP) every five years, which promotes water conservation and efficiency measures. Urban water suppliers that serve more than 3,000 customers or are supplying more than 3,000 acre‐feet of water annually are subject to this Act. This Act requires that the total project water use be compared to water supply sources over the next 20 years in five‐year increments. Planning must occur for all drought years and must include a water recycling analysis that incorporates a description of the wastewater collection and treatment system, outlining existing and potential recycled water uses. In September 2014, the Act was amended by SB 1420, which now requires urban water suppliers to provide descriptions of their water demand management measures and similar information. Water Conservation Act of 2009 The Water Conservation Act of 2009 (SB X7‐7) requires all water suppliers to increase water use efficiency by reducing per capita urban water use by 20 percent by December 31, 2020. This bill also set a goal for the state of reducing per capita water use by at least 10 percent by December 31, 2015. California Integrated Waste Management Act (AB 939) AB 939 established the California Integrated Waste Management Board under CalRecycle, which required all counties within California to prepare integrated waste management plans. Additionally, it changed the focus of solid waste management from landfill to diversion strategies (e.g., source reduction, recycling, and composting), and required all municipalities to divert 25 percent of their solid waste from landfill disposal by January 1, 1995 and fifty percent by the year 2000. California Mandatory Commercial Recycling Law (AB 341) AB 341 was enacted to help meet California’s recycling goal of 75 percent by the year 2020. AB 341 requires all commercial businesses and public entities that generate 4 cubic yards or more of waste per week to have a recycling program in place. In addition, multi‐family apartments with five or more units are also required to form a recycling program. In addition, each local government jurisdiction will implement a commercial solid waste recycling program that consists of education, outreach and monitoring of businesses, designed to divert commercial solid waste from businesses. Each jurisdiction will report the progress achieved in implementing its commercial recycling program, including education, outreach and monitoring, and if applicable, enforcement efforts and exemptions, by providing updates in its electronic annual 459 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 132 report. CalRecycle will review each jurisdiction’s commercial recycling program that consists of education, outreach and monitoring. Mandatory Organics Recycling AB 1826 In October 2014 Governor Brown signed AB 1826, requiring businesses to recycle their organic waste on and after April 1, 2016, depending on the amount of waste they generate per week. This law also requires that on and after January 1, 2016, local jurisdictions across the state implement an organic waste recycling program to divert organic waste generated by businesses, including multifamily residential dwellings that consist of five or more units. Organic waste means food waste, green waste, landscape and pruning waste, nonhazardous wood waste, and food‐soiled paper waste that is mixed in with food waste. This law phases in the mandatory recycling of commercial organics over time, while also offering an exemption process for rural counties. In particular, the minimum threshold of organic waste generation by businesses decreases over time, which means an increasingly greater proportion of the commercial sector will be required to comply. CALGreen Building Code CALGreen requires mandatory green standards that all buildings in California must abide by, including: reducing indoor water use, reducing wastewater, recycling and/or salvaging nonhazardous construction and demolition debris, and providing readily accessible areas for recycling by the occupant. The code includes different categories such as energy, water, material, and resource efficiency. These standards include a mandatory set of minimum guidelines, as well as more stringent voluntary measures for new construction projects that local communities can opt into. Local Regulations 2015 Urban Water Management Plan (UWMP) Water is provided to the project site by DSRSD. The DSRSD adopted a UWMP in 2016 as per SB X7‐7 and the Urban Water Management Planning Act (Section 10610 of Division 6 of the California Water Code). These plans are prepared every five years and must address the reliability of water sources within the following 20 years as well as other demand management measures and water shortage contingency plans. Additionally, the UWMP identifies strategies to meet requirements under SB X7‐7 by reporting on progress towards meeting a 20 percent reduction for per‐capita urban water use by the year 2020. The UWMP also plans for emergencies and times of water shortage. DSRSD is currently in the process of updating the UWMP. 460 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 133 City of Dublin General Plan Chapter 4.0, Land Use and Circulation: Schools, Public Lands, and Utilities Element, identifies the City’s policies related to the provision of public services and utilities in the City. The following policies from the City of Dublin General Plan relate to the proposed project: Guiding Policy 4.4.1.A.1. Ensure that adequate solid waste disposal capacity is available, to avoid constraining development, consistent with the Dublin General Plan. Implementing Policy 4.4.1.B.3. Prior to project approval, the applicant shall demonstrate that capacity will exist in solid waste disposal facilities for their project prior to the issuance of building permits. Guiding Policy 4.5.1.A.1. Expand sewage treatment and disposal capacity to avoid constraining development consistent with the Dublin General Plan. Implementing Policy 4.5.1.B.1. Prior to project approval, developers shall demonstrate that adequate capacity will exist in sewage treatment and disposal facilities for their projects prior to the issuance of building permits. Guiding Policy 4.6.1.A.1. Base General Plan proposals on the assumption that water supplies will be sufficient and that local wells could be used to supplement imported water if necessary. Implementing Policy 4.6.1.B.1. Consider obtaining water service from the East Bay Municipal Utility District and other sources. Eastern Dublin Specific Plan Chapter 8.0 of the Eastern Dublin Specific Plan outlines goals, policies and programs related to the provision of community services and facilities in Eastern Dublin. The following policies from the Eastern Dublin Specific Plan relate to the proposed project: Policy 8‐7: Support ACWMA efforts to develop alter‐ hate disposal facilities for organic waste in the Tri‐Valley area, particularly for composting and reuse of organic material. Policy 8‐8: Encourage the separation of recyclable materials from the general waste stream by supporting the development of a recycling collection system and facilities. Policy 8‐9: Coordinate with Pacific Gas and Electric and Pacific Bell in planning and scheduling future facilities which will serve eastern Dublin. 461 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 134 Chapter 9.0 of the Eastern Dublin Specific Plan outlines goals, policies and programs related to water, wastewater and storm drainage in Eastern Dublin. The following policies from the Eastern Dublin Specific Plan relate to the proposed project: Policy 9‐1: Provide an adequate water supply system and related improvements and storage facilities for all new development in the Eastern Dublin Specific Plan area. Policy 9‐3: Provide for public wastewater collection, treatment and disposal for all new development in the Eastern Dublin Specific Plan area. Policy 9‐6: Ensure wastewater treatment and disposal facilities are available to meet the needs of future development in eastern Dublin. The City should support DSRSD's and TWA's wastewater management plans as they relate to the Eastern Dublin Specific Plan area. Policy 9‐7: Require drainage facilities that will minimize any increased potential for erosion or flooding. Policy 9‐8: Require channel improvements consist of natural creek bottoms and side slopes with natural vegetation where possible to meet Policy 9‐7 above. (See also Policy 7‐11.) Policy 9‐9: Plan facilities and select management practices in the Eastern Dublin Specific Plan area that protect and enhance water quality. Previous CEQA Documents Eastern Dublin EIR The Eastern Dublin EIR identified potential significant impacts related to lack of a wastewater collection system, extension of a sewer trunk line with capacity to serve new developments, limited treatment plant capacity and wastewater disposal capacity, increased energy use for wastewater treatment and wastewater disposal, potential failure of the export disposal system, pump station noise and odors, storage basin odors and potential failure, recycled water system operations, recycled water storage failure, loss of recycled water system pressure, and secondary impacts from recycled water system operation. Mitigation measures were identified to reduce most wastewater impacts to a less than significant level. Impacts associated with increased energy use for wastewater treatment and disposal were determined to be significant and unavoidable, even with implementation of mitigation. The Eastern Dublin EIR also identified potential significant impacts related to overdraft of local groundwater resources, increased demand for water, additional treatment plant capacity, lack of a water distribution system, inducement of substantial growth, increase in energy usage 462 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 135 through operation of the water distribution system, potential water storage reservoir failure, potential loss of system pressure, and potential pump station noise. Mitigation measures were identified to reduce most water impacts to a less than significant level. Impacts associated with increased energy use for water distribution and population growth were determined to be significant and unavoidable, even with implementation of mitigation. Potentially significant impacts related to storm drainage identified in the Eastern Dublin EIR are described in Section 9.0, Hydrology and Water Quality. Dublin Ranch West SEIR The Dublin Ranch West SEIR identified no supplemental impacts resulting from the Dublin Ranch West project because the Dublin Ranch West project would result in the same type and density of development assumed in the Eastern Dublin EIR; therefore, demand for utilities would not differ significantly from that analyzed as part of the Eastern Dublin EIR. 2014 Addendum The 2014 Addendum determined that no new or more severe impacts related to utilities and service systems would result from the Wallis Ranch project than were previously analyzed in the prior environmental documents. Project Impacts and Mitigation Measures (a) Require relocation or construction of new or expanded water, wastewater treatment or storm water drainage, electric power, natural gas or telecommunications facilities No New Impact. Implementation of the proposed project would result in the construction of new park improvements, including a restroom and drinking fountains as well as landscape and turf areas that would require irrigation. These facilities would be located adjacent to existing roadways and could be connected to the existing public service system, including local water and sewer. These connections would not be considered “major” lines because these improvements would be made as additions to the existing infrastructure. It is expected that the relatively small amount of wastewater generated from park improvements (e.g., one restroom) and increased water demand can be accommodated by local sanitary treatment systems and water supply infrastructure and would not require relocation or construction of new or expanded wastewater facilities or water systems. As described in Section 9, Hydrology and Water Quality, the proposed project would be required to comply with the MRP that requires implementation of measures for site design, source control, runoff reduction, stormwater treatment, and baseline hydromodification management. Hydromodification is the alteration of the natural flow of water through a landscape, and often takes the form of creek channel erosion. Hydromodification is one of the 463 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 136 leading sources of impairment in streams, lakes, and estuaries. The MRP also requires implementation of LID Standards. Compliance with these measures would ensure that additional stormwater runoff resulting from the proposed project would be retained and infiltrated on site before being discharged into the storm drain system. Therefore, the proposed project would not require or result in the construction of new stormwater drainage facilities or the expansion of existing facilities. As described in the Project Description, lighting is proposed to promote security and safety for park users and to accommodate nighttime use of the sports courts. Proposed lighting would tie into existing electric utilities and is not anticipated to generate substantial additional demand such that new facilities or expansion of facilities would be required. The proposed project is consistent with the type and intensity of development analyzed in the Eastern Dublin EIR, the Dublin Ranch West SEIR and the 2014 Addendum. No new significant or substantially more severe significant impacts related to expanded water, wastewater, stormwater, electric power natural gas, or telecommunication facilities would occur beyond those analyzed in the prior environmental documents. No additional analysis is required. (b) Sufficient water supply No New Impact. Proposed landscaping would be either native species or drought tolerant species for water conservation; however, the turf grass areas would require typical maintenance such as fertilizer and irrigation. An automatic irrigation system would be designed to minimize water use and be adapted to weather conditions. Additionally, the proposed restroom and water fountains would not generate substantial additional demand for potable water. Therefore, sufficient water supplies would be available to serve the project and reasonably foreseeable future development during normal, dry and multiple dry years. The size and intensity of proposed development associated with the park project is consistent with the level of development anticipated in the prior environmental documents. Therefore, the proposed project would not result in any new significant or substantially more severe significant impacts as compared to those impacts analyzed in the prior environmental documents. No additional analysis is required. (c) Sufficient wastewater capacity No New Impact. Refer to Section 18.a for a discussion of the proposed project’s impacts to wastewater treatment. The proposed project would result in a very minor contribution to the daily permitted capacity of the DSRSD’s wastewater treatment plant and would not exceed the plant capacity. Therefore, the proposed project would not result in any new significant or substantially more severe significant impacts as compared to those impacts analyzed in the prior environmental documents. No additional analysis is required. 464 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 137 (d‐e) Adequate landfill and compliance No New Impact. Operation of the proposed project is not anticipated to generate a significant amount of solid waste. Users of the Wallis Ranch Park and other recreation facilities at the project site would dispose of garbage, but not in amounts that would greatly exceed average per capita garbage generation rates. In addition, recycling receptacles would be located throughout the park, allowing the proposed project to be in full compliance with waste diversion goals mandated by the California Integrated Waste Management Act. The amount of solid waste generated by both users of the park and construction of park facilities or infrastructure would not substantially decrease the amount of space in the Altamont Landfill. Solid waste disposal off‐site would comply with all local, State, and federal requirements. Therefore, the proposed project would not result in any new significant or substantially more severe significant impacts as compared to those impacts analyzed in the prior environmental documents. No additional analysis is required. Source(s) California Department of Resources Recycling and Recovery (CalRecycle). 2020. Website: www.calrecycle.ca.gov/Recycle/Commercial/ (accessed September 15, 2020) Dublin, City of. 2017. City of Dublin General Plan, Adopted February 11, 1985 (Amended as of November 21, 2017). Dublin, City of. 2021. City of Dublin Municipal Code. May 18. Available online at: www.codepublishing.com/CA/Dublin/ (accessed June 25, 2021) Dublin San Ramon Services District. 2019. 2017 Wastewater Collection System Master Plan Final Report. December. Available online at: www.dsrsd.com/home/showpublisheddocument/7233/637244492827570000 (accessed June 27, 2021). Dublin San Ramon Services District. 2016. Final 2015 Urban Water Management Plan. June. Available online at: www.dsrsd.com/home/showpublisheddocument/2890/636057351291330000 (accessed June 27, 2021). Haag, Jerry. 2004. Dublin Ranch West Project, Final Supplemental Environmental Impact Report. November. Haag, Jerry. 2014. Wallis Ranch/Trumark Project PLPA 2013‐00035, Initial Study. April 22. Wallace Roberts & Todd. 2016. Eastern Dublin Specific Plan. January 7, 1994 (Updated September 20, 2016). 465 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 138 Wallace Roberts & Todd. 1992. Final Environmental Impact Report, State Clearinghouse Number 91103064 Eastern Dublin General Plan Amendment and Specific Plan. December 7. 466 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 139 Wildfire Project Impacts and Mitigation Measures (a‐d) Impair an emergency response plan, exposure to wildfire, require installation or maintenance of infrastructure, exposure of flooding or landslides The Eastern Dublin EIR and the Dublin Ranch West SEIR were certified prior to the mandatory analysis of wildfire impacts. However, wildfire risks were adequately discussed in Section 8.h. The proposed project would not create significant impacts related to wildfire. No additional analysis is required. 467 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 140 Mandatory Findings of Significance ENVIRONMENTAL IMPACTS Issues Potentially Significant Issues Potentially Significant Unless Mitigation Incorporated Less Than Significant Impact No New Impact 18. MANDATORY FINDINGS OF SIGNIFICANCE. Does the project: a. Have the potential to 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, reduce the number or restrict the range of a rare or endangered plant or animal or eliminate important examples of the major periods of California history or prehistory? X b. Have impacts that are individually limited, but cumulatively considerable? ("Cumulatively considerable" means that the incremental effects of a project are considerable when viewed in connection with the effects of the past projects, the effects of other current projects, and the effects of probable future projects.) X c. Have environmental effects which will cause substantial adverse effects on human beings, either directly or indirectly? X Significant Impacts Construction and operation of the proposed project would not substantially degrade the quality of the environment; reduce the habitat, population, or range of a plant or animal species; or eliminate important examples of California history or prehistory. Potential impacts to biological and cultural resources, including special‐status species, sensitive habitat, riparian areas and wetlands, nesting birds, historic and pre‐historic resources were analyzed in the Eastern Dublin EIR and the Dublin Ranch West SEIR. Construction‐related air quality and noise impacts were also evaluated in the prior environmental documents. The proposed project would construct park improvements within the site designated for park use; therefore, the intensity of development proposed is consistent with that evaluated in the prior environmental documents. In addition, the proposed project would implement the applicable mitigation measures identified in the prior environmental document. With implementation of these mitigation measures, the proposed project would result in less than significant impacts to the quality of the environment. No new impacts or substantially more severe significant impacts would occur. No additional analysis is required. 468 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 141 Cumulative Impacts Cumulative impacts associated with implementation of the proposed project were considered and evaluated in the Eastern Dublin EIR, Dublin Ranch West SEIR, and the 2014 Addendum. No new cumulative impacts or substantially more severe significant cumulative impacts were identified as a result of implementing the proposed park project. 469 City of Dublin WALLIS RANCH PARK PROJECT Addendum to the Eastern Dublin EIR and the 2005 Dublin Ranch West SEIR| Page 142 This page intentionally left blank. 470 Liverm ore SOURCE: ESRI World Street Maps (2021). I:\DUB1601.03\GIS\Maps\Figure 1_Regonal Location.mxd (6/29/2021) FIGURE 1 Wallis Ranch Park ProjectDublin, Alameda County, California Regional Location Project Vicinity 0 1000 2000 FEET LEGEN D Project Parcels Project Location Project Site 471 TTassajara Rd Fallon RdTassajara RdTassajara RdWallis Ranch DrRutherford DriveBranding Iron CtSilvera Ranc h D r Tassajara CreekTassajara Rd Fallon RdTassajara RdWallis Ranch DrRutherford DriveBranding Iron CtSilvera Ranc h D r Tassajara CreekTHE QUARRYLANE SCHOOLYARRA YARRAEQUESTRIANCENTERTASSAJARA CREEKREGIONAL PARKLOWER QUARRYLANE SCHOOLFEETProject Site Boundaries5000 250SOURCES: Google Earth, 2/24/2021; LSA, 2021P:\DUB1601.03 Wallis Ranch Project\PRODUCTS\Graphics\Figure_2.ai (6/25/2021)FIGURE 2Wallis Ranch Park ProjectAerial Photograph of the Project Site and Surrounding Land Uses472 160080FEETSOURCES: City of Dublin; CALA, June 2021P:\DUB1601.03 Wallis Ranch Project\PRODUCTS\Graphics\Figure_3 11x17.ai (6/25/2021)FIGURE 3Wallis Ranch Park ProjectConceptual Park Plan - AlternaƟve A473 160080FEETSOURCES: City of Dublin; CALA, June 2021P:\DUB1601.03 Wallis Ranch Project\PRODUCTS\Graphics\Figure_4 11x17.ai (6/25/2021)FIGURE 4Wallis Ranch Park ProjectConceptual Park Plan - AlternaƟve B474 0’ 20’ 40’ 80’ 21006_PreferredPlan_30x72.inddFUTURE COMMUNITY PARKNEAR THE WALLIS RANCH DEVELOPMENTSeptember 8, 2021CONCEPT PLANTASSAJARACREEKQUARRY LANE SCHOOLWALLIS RANCH COMMUNITYCAMP PARKSTO I-580TO FALLON RDTASSAJARA RDPARCEL 22SEPARATED DOG PARK WITH NATURAL TURF AND INFRASTRUCTURE FOR ROTATION OF TURF MAINTENANCEUNPLANTED LANDSCAPE, TYP.ORCHARD GRID ACCENT TREES, TYP.ENTRY PLAZASHADE TREE, TYP.TURFPARKING LOT, 25 SPACES LIGHTED SPORTS COURTS (3 DEDICATED TENNIS, 4 DEDICATED PICKLEBALL, 1 TENNIS/PICKLEBALL COMBO)LIGHTED BASKETBALL COURTS (2)PICNIC AREAENTRY PLAZATOT PLAY AREA PICNIC AREAYOUTH PLAY AREA NATURE PLAY AREA RESTROOMDROUGHT-TOLERANT PLANTINGOVERLOOKOPEN TURF RECREATION AREAENTRY PLAZARESTROOMPARCEL 21PARCEL 16WALLISRANCHDRRUTHERFORDDRIVEEXISTING SCULPTUREFITNESS NODE, TYP. OF 6Attachment 3EXHIBIT B475 21006_PrelimAlts_ImageryBoards_30x42.inddFUTURE COMMUNITY PARKNEAR THE WALLIS RANCH DEVELOPMENTJune 5, 2021THEME 3 - WINDSWEPT GRASSLANDSINSPIRATION IMAGERY476 Number PK0421 Program PARKS PRIOR YEARS 2020-2021 BUDGET 2021-2022 2022-2023 2023-2024 2024-2025 FUTURE YEARS TOTALS 9100 $73,070 $135,600 $208,670 9200 $470,000 $546,000 $1,016,000 9400 $21,685 $5,052,870 $5,074,555 9500 $399,775 $399,775 $964,530 $5,734,470 $6,699,000 PRIOR YEARS 2020-2021 BUDGET 2021-2022 2022-2023 2023-2024 2024-2025 FUTURE YEARS TOTALS 4100 $964,530 $5,734,470 $6,699,000 $964,530 $5,734,470 $6,699,000 ANNUAL OPERATING IMPACT $112,100 2020-2025 CAPITAL IMPROVEMENT PROGRAM WALLIS RANCH COMMUNITY PARK TOTAL Miscellaneous ESTIMATED COSTS FUNDING SOURCE TOTAL Public Facility Fees Salaries & Benefits Contract Services Improvements PROJECT DESCRIPTION The Wallis Ranch Community Park consists of three separate parcels totaling 8.85 acres in the Wallis Ranch Development. The project will provide for the design and construction of a community park on the parcels will be designed to the Community Park Standards contained in the Parks and Recreation Master Plan. Park amenities could include: play area, picnic facilities, turf area, natural area, restrooms, pathways, lighting, and irrigation and landscaping. Design began in Spring 2021. Construction anticipated to commence in 2022. ANNUAL OPERATING IMPACT: $112,100 MANAGING DEPARTMENT: Public Works Attachment 4 44 477 0’ 20’ 40’ 80’ 21006_PrelimAlts_30x72.indd FUTURE COMMUNITY PARKNEAR THE WALLIS RANCH DEVELOPMENT ALTERNATIVE A July 19, 2021 T A S S A J A R A C REEK QUARRY LANE SCHOOL WALLIS RANCH COMMUNITY CAMP PARKS TO I-580 TO FALLON RD TASSAJARA RD PARCEL 22 SEPARATED DOG PARK WITH NATURAL TURF AND INFRASTRUCTURE FOR ROTATION OF TURF MAINTENANCE ORCHARD GRID ACCENT TREES, TYP. ENTRY PLAZA SHADE TREE, TYP. TURF PARKING LOT, 10 TO 12 SPACES LIGHTED SPORTS COURTS (3 DEDICATED TENNIS, 4 DEDICATED PICKLEBALL, 1 TENNIS/PICKLEBALL COMBO) BASKETBALL COURTS (2) FITNESS AREA PICNIC AREA ENTRY PLAZA TOT PLAY AREA YOUTH PLAY AREA CENTRAL PLAZA WITH GROUP PICNIC AREA OVERLOOK OPEN TURF RECREATION AREA ENTRY PLAZA RESTROOM PARCEL 21 PARCEL 16 W A L L I S R A N C H D R RUTHERFO R D D R IV E EXISTING SCULPTURE Attachment 5 478 0’ 20’ 40’ 80’ 21006_PrelimAlts_30x72.indd FUTURE COMMUNITY PARKNEAR THE WALLIS RANCH DEVELOPMENT ALTERNATIVE B July 19, 2021 T A S S A J A R A C REEK QUARRY LANE SCHOOL WALLIS RANCH COMMUNITY CAMP PARKS TO I-580 TO FALLON RD TASSAJARA RD PARCEL 22 PARCEL 21 PARCEL 16 FITNESS CIRCUIT LIGHTED SPORTS COURTS (4 TENNIS, 4 PICKLEBALL) RESTROOM TURF PARKING LOT, 10 TO 12 SPACES TOT PLAY AREA PICNIC AREA YOUTH PLAY AREA PICNIC AREA WITH SHADE SEATING NODE IN DG, TYP. SEPARATED DOG PARK WITH NATURAL TURF AND INFRASTRUCTURE FOR ROTATION OF TURF MAINTENANCE OPEN TURF RECREATION AREAENTRY PLAZA DOG PARK ENTRY WALLISRAN C H D REXISTING SCULPTURE BASKETBALL COURTS (2) RUTHERFO R D D R IV E 479 21006_PrelimAlts_ImageryBoards_30x42.indd FUTURE COMMUNITY PARKNEAR THE WALLIS RANCH DEVELOPMENT June 5, 2021 THEME 1 - FARMS & RANCHING INSPIRATION IMAGERY Attachment 6 480 21006_PrelimAlts_ImageryBoards_30x42.indd FUTURE COMMUNITY PARKNEAR THE WALLIS RANCH DEVELOPMENT June 5, 2021 THEME 2 - CREEKS AND STREAMS INSPIRATION IMAGERY 481 21006_PrelimAlts_ImageryBoards_30x42.indd FUTURE COMMUNITY PARKNEAR THE WALLIS RANCH DEVELOPMENT June 5, 2021 THEME 3 - WINDSWEPT GRASSLANDS INSPIRATION IMAGERY 482 www.callanderassociates.com BURLINGAME GOLD RIVER SAN JOSE 1633 Bayshore Highway, Suite 133 12150 Tributary Point Drive, Suite 140 2025 Gateway Place, Suite 285 Burlingame, CA 94010 Gold River, CA 95670 San Jose, CA 95110 650.375.1313 916.985.4366 408.275.0565 Recreate Educate Live+Work Connect Sustain Via Email Only June 11, 2021 Outreach Summary Community Meeting #2 RE: Wallis Ranch Community Park / Preliminary Concept Alternatives Date: June 5, 2021 Time: 11:00 a.m. to 2:00 p.m. Attendees: City of Dublin (City): La Shawn Butler Bridget Amaya Rosemary Alex Jennifer Li Marzi Callander Associates (CALA): Dave Rubin Megan Richards Community Members: approximately 200 attendees Questionnaires received: 195 Comment cards received: 88 The City and CALA shared preliminary concept alternatives with the community for the future park near the Wallis Ranch development. The outreach event was held at the future park site in an open house format. City staff and CALA were available to answer questions and community members were encouraged to complete a questionnaire and comment cards about their preferred alternative. The following is a summary of feedback received. Attachment 7 483 Outreach Summary Community Meeting #2 RE: Wallis Ranch Community Park / Preliminary Concept Alternatives June 5, 2021 Page 2 of 7 21006_SUM_ComMtg#2 © copyrighted 2021 Callander Associates Landscape Architecture, Inc. Questionnaire Response Summary Question 1: Do you live, work, or go to school nearby the future park? Of 191 respondents, the majority (70%) live, work or go to school within 1/4 mile of the future park. Data: 484 Outreach Summary Community Meeting #2 RE: Wallis Ranch Community Park / Preliminary Concept Alternatives June 5, 2021 Page 3 of 7 21006_SUM_ComMtg#2 © copyrighted 2021 Callander Associates Landscape Architecture, Inc. Question 2: How often do you currently visit your local parks? 93% of respondents visit local parks regularly, either daily or weekly. Data: 485 Outreach Summary Community Meeting #2 RE: Wallis Ranch Community Park / Preliminary Concept Alternatives June 5, 2021 Page 4 of 7 21006_SUM_ComMtg#2 © copyrighted 2021 Callander Associates Landscape Architecture, Inc. Question 3: Were you able to join any of the City’s earlier outreach events? A little over half of the respondents had not participated in prior outreach events for this project. Data: Question 4: Which alternative is more appealing to you? Over two-thirds (68%) of respondents preferred Alternative A over Alternative B. Data: 486 Outreach Summary Community Meeting #2 RE: Wallis Ranch Community Park / Preliminary Concept Alternatives June 5, 2021 Page 5 of 7 21006_SUM_ComMtg#2 © copyrighted 2021 Callander Associates Landscape Architecture, Inc. Question 5: What do you like about your preferred alternative? Responses with 5 or more mentions are noted below: Alternative A Respondents preferred the: • Dog park location: on a separate parcel, located far from homes (40) • Play area location: near the Wallis Ranch community, near picnic and turf (32) • Sports courts location: all courts are clustered in one area on one parcel (9) • Size of play area: larger than play area in Alternative B (5) Alternative B Respondents preferred the: • Dog park location: closer to Wallis Ranch community, near open turf area (13) • Sports courts location (13) Question 6: How could we improve your preferred alternative? Responses with 5 or more mentions are noted below: Alternative A Respondents were interested in: • Volleyball courts (17) • More parking (9) • Picnic Area: more picnic areas, shaded picnic areas, closer to play, BBQs (8) • Fitness Loop: walking trail, fitness circuit (6) • Water Play (6) Alternative B Respondents were interested in: • Basketball courts: more courts, lighted courts (5) 487 Outreach Summary Community Meeting #2 RE: Wallis Ranch Community Park / Preliminary Concept Alternatives June 5, 2021 Page 6 of 7 21006_SUM_ComMtg#2 © copyrighted 2021 Callander Associates Landscape Architecture, Inc. Question 7: Rank the themes in order of your preference, with 1 being the one you like most, and 3 being the one you least prefer. Theme 1: Farms and Ranching Theme 2: Creeks and Streams Theme 3: Windswept Grasslands Theme 3, windswept grasslands, was the highest rank theme with 90 respondents selecting it as their first choice. Write-in responses with 2 or more mentions: • Forest, trees: 2 • Waterfall, ocean: 3 488 Outreach Summary Community Meeting #2 RE: Wallis Ranch Community Park / Preliminary Concept Alternatives June 5, 2021 Page 7 of 7 21006_SUM_ComMtg#2 © copyrighted 2021 Callander Associates Landscape Architecture, Inc. Question 8: Do you have any other ideas you would like to add? Responses with 5 or more mentions are noted below: • Zipline (17) • Badminton (8) • Less pickleball, more other sports: tennis, volleyball, cricket (8) • Many trees (8) • Parking, parking management to minimize congestion for adjacent residents (8) • Soccer goals (5) The information above is Callander Associates’ understanding of comments made during the open house. Callander Associates is proceeding with the project based on this understanding. Submitted by: Melinda Wang Callander Associates cc: All attendees 489 Kittelson & Associates, Inc. Oakland, California TECHNICAL MEMORANDUM Wallis Ranch Park Parking Needs Assessment Date: June 28, 2021 Project #: 22865 To: Pratyush Bhatia From: Aaron Elias cc: Rosemary Alex The City of Dublin is proposing to construct a park in Eastern Dublin off Tassajara Road near the Wallis Ranch community. The park is proposed to contain basketball courts, pickle ball courts, tennis courts, play equipment, and a dog park. This technical memorandum documents Kittelson & Associates, Inc. (Kittelson) assessment of the parking requirements for the new facility. PARKING DEMAND Kittelson estimated the potential parking demand of the new park by analyzing the parking needs of the individual park components. There were two design alternatives for the park as of plans provided to Kittelson dated June 5, 2021 (Appendix 1). The primary drivers of parking demand in these alternatives are the sports courts and the dog park. Both Alternative A and Alternative B have the same number of sports courts (four pickleball, four tennis, and two basketball courts) and a single dog park. However, the location of these facilities within the park changes between the alternatives. The parking needs of sports courts are generally well established by the City of Dublin with municipal code section 8.76.080 calling for two parking spaces per sports court resulting in a total parking need of 20 spaces. However, there is no guidance in the municipal code of the parking requirements related to a dog park. To estimate the parking needs of a dog park, Kittelson collected parking demand data at the Dougherty Hills Dog Park located off Amador Valley Boulevard. Data at this dog park were collected on a typical weekday afternoon (Tuesday, June 15, 2021 from 4 PM to 7 PM) and on a typical weekend day (Saturday, June 12, 2021) from 9 AM to 7 PM. The collected data is provided in Appendix 2. Parking at this dog park includes a small lot of 12 parking spaces (1 ADA and 11 standard stalls) and on-street parking that serves both the dog park as well as the entrance to the Alamo Creek Trail. The collected parking demand data is shown in Figure 1 and Figure 2 for the weekend and weekday afternoon time periods, respectively. As shown, the peak parking demand occurred on the weekday afternoon when a total of 24 vehicles were parked on the street and in the parking lot. Estimating the parking needs of the proposed park near Wallis Ranch assuming 24 parking spaces can be assumed to present a conservative analysis of parking demand for the new park because the collected data includes parking for both the Dougherty Hills Dog Park and the Alamo Creek Trail. Attachment 8 490 Project #: 22865 June 28, 2021 Page 2 Kittelson & Associates, Inc. Oakland, California Figure 1: Typical Weekend Day Parking Demand for Dougherty Hills Dog Park 491 Project #: 22865 June 28, 2021 Page 3 Kittelson & Associates, Inc. Oakland, California Figure 2: Typical Weekday Afternoon Day Parking Demand for Dougherty Hills Dog Park 492 Project #: 22865 June 28, 2021 Page 4 Kittelson & Associates, Inc. Oakland, California PARKING SUPPLY Parking for the proposed park is anticipated to occur along Rutherford Drive which is one of two roadways connecting Tassajara Road to the Wallis Ranch community. This roadway was designed as a 29-foot roadway1 from face-of-curb to face-of-curb which is sufficient to allow for an 8-foot parking lane and a two-way street of approximately 21 feet in width which is sufficient for a low volume, low speed street. Kittelson used aerial imagery to estimate the amount of curb space available for parking considering the roadway geometrics and safety for vehicles traveling along the roadway. Rutherford Drive is estimated to have approximately 550 feet of curb length near what is identified as parcel 21 on the plans (Appendix 1) and 775 feet of curb length near parcel 16. The California Manual on Uniform Traffic Control Devices (CAMUTCD) identifies on street parking stalls having a length of 24 feet for stalls not on the ends of the parking row and 20-foot parking stalls for those parking spaces located on the ends (see Figure 3B-21 (CA) of the CAMUTCD). Based on the CAMUTCD parking stall dimensions, the 550 feet of curb near parcel 21 would allow for approximately 23 parking spaces while the 775 feet near parcel 16 would allow for approximately 32 parking spaces. The measurements and aerial imagery used to develop these estimates is provided in Appendix 3. LOCATION OF PARKING There are currently two alternatives proposed for the park near Wallis Ranch which are shown in Appendix 1. Alternative A includes a dog park on parcel 22, sports courts on parcel 21, and a plaza/youth play area on parcel 16. Alternative B moves the dog park to parcel 16 and the two basketball courts to parcel 22 while the tennis and pickleball courts remain on parcel 21. While these two alternatives have the same parking demand estimates because they have the same number of courts and the dog park, the placement of the park components affects where patrons will park. Alternative A is the most challenging alternative for parking because the most intensive park uses, the dog park and sports courts, are located near each other in parcel 21 and parcel 22 for this alternative. The combined parking demand for these two uses was previously estimated in this technical memorandum as 44 parking spaces (20 for the sports courts and 24 for the dog park). The street parking along Rutherford Drive near parcel 21 is enough for only about 23 parking spaces which is 21 parking spaces short of the estimated demand for peak hour conditions. These 21 additional vehicles would either need to be accommodated in a parking lot within the park near parcel 21 and 22 or park patrons would need to park on the street close to parcel 16 and walk to parcels 21 or 22. Alternative B provides a better balance for the intensive park uses because the dog park and sports courts are separated. The sports courts located in parcels 21 and 22 would have the estimated 23 1 There is a narrower section of the roadway which includes the bridge over Tassajara Creek 493 Project #: 22865 June 28, 2021 Page 5 Kittelson & Associates, Inc. Oakland, California parking spaces along Rutherford Drive near parcel 21 which is sufficient to meet the demand estimate of 20 parking spaces. The dog park, with a demand of 24 parking spaces, can be accommodated by the 32 on-street parking spaces located near parcel 16. Therefore, Alternative B better balances parking nearer the activities park patrons are visiting for without having to provide off-street parking compared to Alternative A. PARKING DESIGN RECOMMENDATIONS Based on our analysis, Kittelson provides the following recommendations for the City of Dublin to consider when implementing on-street parking along Rutherford Drive: • Parking spaces should be striped using “T” markings to better delineate the parking area of the roadway. • Striping a yellow centerline stripe in locations it does not exist today is not recommended to reenforce the local nature of the roadway. • Construction drawings show Rutherford Drive should be 29 feet in width from face-of-curb to face-of-curb except over the Tassajara Creek bridge. On-street parking should not be allowed on any sections where the face-of-curbs are less than 28 feet apart. • No parking signs or red curb should be placed in areas where parking is not allowed. This includes the west side of Rutherford Drive, the approaches to the Tassajara Creek bridge, and between the two 90-degree turns located at the south end of parcel 16. • On-street parking along Rutherford Drive should be parallel to the curb. Angled parking should not be installed along Rutherford Drive unless the roadway is appropriately widened to meet standard dimensions for angled parking. • Construction of an off-street parking lot would decrease the on-street parking estimates provided in this memorandum in order to accommodate a driveway and allow for proper sight distance. The additional parking gained by an off-street parking lot may be balanced by the loss to on-street parking unless the off-street parking lot is of a large enough size. • A fence should be constructed along Rutherford Drive near parcel 22 to prevent park patrons from jaywalking between the on-street parking and the dog park/basketball courts (Alternative A/Alternative B). A fence will encourage park patrons to cross at the Tassajara Road and Rutherford Drive signalized intersection. • Assuming Rutherford Drive is 29 feet between the face-of-curb, 21 feet of right-of-way will remain for the passage of vehicles which vehicles are parked. This is likely sufficient for the fire services since there are no abutting buildings to the roadway but consider double checking fire services do not have a problem with 21 feet of clear width. 494 Project #: 22865 June 28, 2021 Page 6 Kittelson & Associates, Inc. Oakland, California SUMMARY This technical memorandum documented the estimated parking supply and demand for a proposed park located off Tassajara Road between Rutherford Drive and Wallis Ranch Drive in Dublin, CA. Key findings from this technical memorandum include: • The parking demand is estimated at 44 vehicles which includes 20 vehicles for the sports courts and 24 vehicles for the dog park. • On-street parking along Rutherford Drive is estimated to have 55 parking spaces which includes 23 parking spaces near parcel 21 and 32 parking spaces near parcel 16. Therefore, there are approximately 9 more on-street parking spaces available than the anticipated demand. • Alternative A locates all the parking intensive uses (sports courts and dog park) in the southern section of the park. Since there are only 23 parking spaces near parcel 21, additional off-street parking is needed in Alternative A or park patrons will need to walk from the approximately 32 parking spaces located on Rutherford Drive near parcel 16. • Alternative B would not require off-street parking since there is sufficient on-street parking near parcels 21 and 22 to meet the demand for the sports courts and there are 32 parking spaces located near the dog park in parcel 16 which meet the dog park demand. • Parking design considerations of note include: o Parking stalls should be marked with “T” markings. o The yellow centerline stripe should not be marked where it is not marked today. o Red curb or signage should be prominent to prevent parking along the west side of Rutherford Drive and near the bridge over Tassajara Creek. 495 Project #: 22865 June 28, 2021 Page 7 Kittelson & Associates, Inc. Oakland, California Appendix 1 Park Design Alternatives 496 497 498 Project #: 22865 June 28, 2021 Page 8 Kittelson & Associates, Inc. Oakland, California Appendix 2 Dougherty Hills Dog Park Raw Data 499 Dougherty Hills Dog Park 6/12/2021 15487101 Time Vehicles Parked on Street Vehicles Parked in Parking Lot Notes 9:00 AM 8 0 9:15 AM 8 2 9:30 AM 11 2 9:45 AM 13 0 10:00 AM 12 0 10:15 AM 13 2 10:30 AM 10 4 10:45 AM 10 7 11:00 AM 10 7 11:15 AM 11 7 11:30 AM 7 4 11:45 AM 6 4 12:00 PM 4 4 12:15 PM 5 5 12:30 PM 4 4 12:45 PM 2 2 1:00 PM 3 2 1:15 PM 3 4 1:30 PM 4 3 1:45 PM 3 1 2:00 PM 3 1 2:15 PM 3 4 2:30 PM 3 3 2:45 PM 3 2 3:00 PM 2 0 3:15 PM 2 1 3:30 PM 1 2 3:45 PM 1 4 4:00 PM 3 6 4:15 PM 4 10 4:30 PM 3 8 4:45 PM 5 9 5:00 PM 4 1 5:15 PM 4 3 5:30 PM 3 6 5:45 PM 2 5 6:00 PM 2 3 6:15 PM 3 4 6:30 PM 3 4 6:45 PM 3 4 7:00 PM 3 4 Site Code: Location: Date: 500 Dougherty Hills Dog Park 6/15/2021 15487102 Time Vehicles Parked on Street Vehicles Parked in Parking Lot Notes 4:00 PM 9 3 4:15 PM 8 2 4:30 PM 9 6 4:45 PM 10 8 5:00 PM 9 9 5:15 PM 10 11 5:30 PM 14 8 5:45 PM 15 9 6:00 PM 12 8 6:15 PM 12 7 6:30 PM 13 3 6:45 PM 9 9 7:00 PM 8 10 Location: Date: Site Code: 501 Project #: 22865 June 28, 2021 Page 9 Kittelson & Associates, Inc. Oakland, California Appendix 3 Aerial Imagery and Parking Length Estimates 502 503 504 Attachment 9 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 Attachment 10 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 City Council Meeting Future Community Park Near the Wallis Ranch Development September 21, 2021 FUTURE COMMUNITY PARK NEAR THE WALLIS RANCH DEVELOPMENT •On-line Survey:March 14 –April 2 •Community Meeting #1:March 31 •Concept Preparation:April and May •Community Meeting #2:June 5 •Revise Concept:June •PCS Commission:July 19 •City Council:September 21 PROCESS FUTURE COMMUNITY PARK NEAR THE WALLIS RANCH DEVELOPMENT PARK THEME Rank the themes in order of your preference. Most preferred Least preferred Farms and Ranching Creeks and Streams Windswept Grasslands FUTURE COMMUNITY PARK NEAR THE WALLIS RANCH DEVELOPMENT CONCEPT Parcel 21Parcel 22 Parcel 16 FUTURE COMMUNITY PARK NEAR THE WALLIS RANCH DEVELOPMENT PARK AMENITIES FUTURE COMMUNITY PARK NEAR THE WALLIS RANCH DEVELOPMENT PARK AMENITIES FUTURE COMMUNITY PARK NEAR THE WALLIS RANCH DEVELOPMENT BUDGET •Project Budget $6.7 million Construction $5.1 million Soft Costs $1.6 million •Conceptual Design Cost Estimate $8.62 million Construction $6.42 million Soft Costs $2.2 million FUTURE COMMUNITY PARK NEAR THE WALLIS RANCH DEVELOPMENT Environmental Review •Environmental review has shown that the proposed park will have no significant impacts beyond those identified in the Eastern Dublin Environmental Impact Report and the 2005 Dublin Ranch West Supplemental Environmental Impact Report. FUTURE COMMUNITY PARK NEAR THE WALLIS RANCH DEVELOPMENT City Council Action •Adopt the Resolution Approving an Addendum to the Eastern Dublin Environmental Impact Report and the 2005 Dublin Ranch West Supplemental Environmental Impact Report and Approve the Wallis Ranch Community Park Conceptual Plan