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Home My WebLink AboutItem 6.3 NegDecTassRdFallonRd CITY CLERK File # D~[g][Q]-œØJ AGENDA STATEMENT CITY COUNCIL MEETING DATE: July 20, 2004 SUBJECT: ATTACHMENTS: RECOMMENDATION: ~ ¥ FINANCIAL STATEMENT: PUBLIC HEARING: (1) Certification of Initial Study/Mitigated Negative Declaration and Mitigation Monitoring and Reporting Program for the Tassajara RoadlFallon Road Ultimate Right-of-Way Alignment, and (2) Establish Ultimate Right-of-Way Lines for Tassajara Road and Fallon Road Report Prepared by: Melissa Morton, Public Works Director 1) 2) 3) 4) 5) Location Map Map of Ultimate Right-of-Way Lines for Tassajara Road and Fallon Road Initial Study/Mitigated Negative Declaration, with attached comments and responses Mitigation Monitoring and Reporting Program Resolution Certifying Initial Study/Mitigated Negative Declaration and Mitigation Monitoring and Reporting Program for the Tassajara Road/Fallon Road Ultimate Right- of-Way Alignment . Draft Ordinance to Establish Ultimate Right-of-Way Lines for Tassajara Road and Fallon Road, together with Exhibit A: Legal Description of proposed Right-of-Way Lines, and Exhibit B: Plat Maps of proposed Right-of-Way Lines 6) 1) 2) 3) 4) 5) 6) Open public hearing Receive Staff presentation Receive public testimony Close public hearing Deliberate Adopt Resolution approving the Initial Study/Mitigated Negative Declaration and Mitigation Monitoring and Reporting Program for the Tassajara RoadlFallon Road Ultimate Right-of-Way Alignment Waive Reading and Introduce Ordinance to Establish Ultimate Right-of-Way Lines for Tassajara Road and Fallon Road 7) No financial impact is anticipated at this time. Tassajara Road and Fallon Road are included as Segments 22 and 26 in the Eastern --------------------------------------------------------------- COPIES TO: Affected Property Owners \ 0b '-'\ ITEM NO. M G:\DEVELOP\Dublin Ranch\Tassajara Road Alignment\agst_ establish row. doc v Dublin Traffic Impact Fees (EDT IF) Program. Frontage improvements for each of the fronting properties are not included in EDTIF and will instead be the sole responsibility of the property owners who develop their properties pursuant to the Eastern Dublin Specific Plan. The City is also currently collecting Dublin Contra Costa (DCC) fees for future arterial street widening pursuant to a Joint Exercise of Powers Agreement between the City and Contra Costa County to mitigate traffic impacts from development in Dougherty Valley. DCC fees are intended to fund the construction of two of the six ultimate lanes on Tassajara Road. DESCRIPTION: The Eastern Dublin Specific Plan adopted in 1994 identified a need to reserve sufficient right-of-way along Tassajara Road for future widening to accommodate cumulative development along this roadway corridor. The City previously adopted Right-of-Way Lines for the southern segment of Tassajara Road between 1-580 and the northern boundary of Dublin Ranch Phase 1 as Ordinance No. 20-99, thus allowing portions of the roadway to be constructed to an ultimate width of 128 feet. Presently, the segment of Tassajara Road north of Dublin Ranch remains a two-lane road with gravel shoulders and a right-of-way width of 66 feet. The City annexed portions of this northern segment into the City as part of the Silveria Ranch project by Pinn Brothers, while the balance remains within Alameda County. The proposed Ultimate Right-of-Way Lines for northern Tassajara Road and Fallon Road will establish a right-of-way alignment for the future widening of Tassajara Road to six lanes, and the future extension of Fallon Road to four lanes using a design speed of 45 MPH. These future roads will include sidewalks, bicycle lanes, right and left turn pockets, traffic signals, and raised landscape medians. For Tassajara Road, the alignment will extend from the northern boundary of Dublin Ranch Phase 1 near Shadow Hills Drive to the Alameda County/Contra Costa County line, generally following the existing road. The right- of-way width for this segment varies between 122 feet and 128 feet. For Fallon Road, the alignment will extend from a planned intersection at Tassajara Road to a point approximately 1,500 feet southeast of the intersection for connection with the portion of Fallon Road to be constructed as part of Dublin Ranch Area A. The right-of-way width for this road is 110 feet. These alignments are intended to satisfy Mitigation Measure 3.3/14.0 of the Eastern Dublin General Plan Amendment and Eastern Dublin Specific Plan that requires the City to reserve sufficient right-of-way for future road construction. Adoption of the right-of-way lines will not result in the immediate acquisition of any property, but will preclude property owners from constructing buildings or other structures within the future right-of-way area. Establishment of Right-of-Way Lines: The procedure for adopting a new roadway alignment is governed by Chapter 7.68 of the Dublin Municipal Code. In addition, Government Code §65402 states, in part, that if a General Plan has been adopted, no real property shall be acquired by dedication or otherwise for street purposes until the location, purpose, and extent of such acquisition have been submitted to and reported upon by the Planning Agency (Planning Commission) as to conformity with the adopted General Plan. Upon receiving a report and recommendation from the Planning Commission, the City Council can then adopt a Resolution of Intention designating the establishment of the right-of-way, thus notifying interested parties. A public hearing can then be conducted so the City Council can hear testimony related to the proposed right-of-way lines. Finally, the City Council can adopt an Ordinance establishing the right-of- way lines described in the Resolution, if appropriate, and have the Ordinance recorded with the County Recorder. Page 2 ~ 'L\ Planning Commission: As required by Government Code §65402, the Planning Commission reviewed the proposed ultimate right-of-way lines for Tassajara Road and Fallon Road at a meeting held on May 11, 2004. After considering all testimony, the Planning Commission adopted Resolution No. 04-38, affirming that the proposed alignments are in conformance with the City of Dublin's General Plan. The Commission also adopted Resolution No. 04-37 recommending that the City Council adopt the Initial Study/Mitigated Negative Declaration and Mitigation Monitoring and Reporting Program for the project, and Resolution No. 04-39 recommending that the City Council adopt a Resolution of Intention to Establish the Ultimate Right-of- W ay Lines for Tassajara Road and Fallon Road. Environmental Review: An Initial Study has been prepared for this proposed project in conformance with the California Environmental Quality Act (CEQA) and CEQA Guidelines. The Initial Study analyzed a full range of potential environmental issues, relying to a significant degree on the Eastern Dublin Environmental Impact Report. Based on the findings of the Initial Study, a Mitigated Negative Declaration is recommended for adoption. During the public review period required by CEQA, the City received comments from the Dublin San Ramon Services District (DSRSD), Alameda County Fire Department, and Alameda County Flood Control and Water Conservation District (Zone 7). The California Regional Water Quality Control Board (RWQCB) also submitted late comments to the State Clearinghouse. The DSRSD and Fire Department comments required no response. The Zone 7 and RWQCB comments were substantive, and Staff prepared and sent responses to each. A Mitigation Monitoring and Reporting Program was also prepared that incorporated the responses (Attachment 4). By implementing the Mitigation Measures included in the Mitigated Negative Declaration and in the Mitigation Monitoring and Reporting Program, the proposed project will not have a significant impact on the environment. A copy of the Initial Study/Mitigated Negative Declaration, together with the comment letters and responses, is attached to this report for reference (Attachment 3). Resolution of Intention: A Resolution of Intention was adopted via City Council Resolution No. 133-04 on July 6, 2004, that set July 20, 2004, at 7:00 pm, as the date and time for the first of two protest hearings. Said resolution was also published and posted along the street where the right-of-way lines are proposed as required by the Municipal Code to give interested parties notice of the first reading of the proposed Ordinance. ANALYSIS: Tassajara Road and Fallon Road are identified in the Eastern Dublin Specific Plan as major north-south arterials between 1-580 and the Alameda County/Contra Costa County line to the north. To develop a safe and appropriate roadway alignment, Staff considered geometric and access issues, topographic constraints, and jurisdictional restrictions. The Map (Attachment 2) shows the proposed horizontal and vertical alignment of Tassajara Road and Fallon Road. This Map illustrates how the road was woven between existing homes, driveways, and parking lots, while respecting significant topographic features such as Tassajara Creek and it's tributaries, and the surrounding knolls and hillsides. The result is a plan that conforms to the design criteria for major arterials with a design speed of 45 MPH, while minimizing adverse impacts to the surrounding topography and riparian areas. The plat maps and legal descriptions (Exhibits A & B of Attachment 6) illustrate the 14 properties that will be directly impacted by the proposed right-of-way lines. The areas to be reserved for future road widening or construction are shaded and fully dimensioned, along with a total square footage and acreage Page 3 6b '-\ estimate of land to be reserved. The shaded areas are shown in relationship to the existing road right-of- way, property lines, and other important topographic features for each property. The alignment was discussed with affected property owners and other stakeholders at three (3) public informational workshops conducted by the City of Dublin Public Works Department on April 11, 2003, May 2,2003, and August 28,2003. The input received from the group was considered in determining the final proposed right-of-way lines. Public Comment Requirements: The establishment of right-of-way lines is regulated by Chapter 7.68 of the Municipal Code. The Code allows any person with an interest in land affected by the proposed right-of-way alignment to file with the City Clerk a written objection, provided said objection is received prior to the Council's consideration of the alignment. The City Council shall hear all protests or objections filed, and then choose to sustain the objections and abandon the proceedings, deny the objections and by Ordinance establish said right-of-way lines, or offer changes and modifications as it shall determine proper. If adopted, the City Clerk shall record the Ordinance with the County Recorder. RECOMMENDATION: Staff recommends that the City Council (1) Open the Public Hearing, (2) Receive Staff Presentation, (3) Receive Public Testimony, (4) Close the Public Hearing, (5) Deliberate, (6) Adopt the Resolution (Attachment 5) Certifying the Initial Study/Mitigated Negative Declaration and Mitigation Monitoring and Reporting Program for the Tassajara RoadlFallon Road Ultimate Right-of-Way Alignment, and (7) Waive the reading and Introduce the Ordinance to establish ultimate right-of-way lines for Tassajara Road and Fallon Road. 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Ç) ¡ }: ! # / ;... ,. . / / ¡' :/ ,'Q:ir-L/ , :' /L ~ / r , / ø ,0 .. ' , :.,' !\)' / / /,', , ,"//;/ ./", .........'}//;/j; , ' ; ,: : : 1$1 / ,/ , . ,/ ! ;' ! I'ð:' " / l ¡ 1/[1"/ ,/. ¡~¡ ¡ i f /f ! ! / I i:i/ 1/1/ , I ! t t ! 'I I ! I ~i I g: 'I i ! 1 ~ ! ; '! I . I! ,II ¡ I I ! ¡ I ¡I· i f \ J\ - \ \~\ \, \ \ \ .' \', I \ \ \. " \; '\ '\ \ \ \. \ : \\\ \\\ \,\ ,;~;;\\ \ \ \\ Map of Ultimate Right-of-Way Lines for TassajaraRoad and Fallon Road (Attachment 2) TASSAJARA ROAD AND FALLON ROAD PRECISE ULTIMATE ALIGNMENT PLAN CITY OF DUBLIN, ALAMEDA COUNTY, CALIFORNIA fOR: CITY Of DUB UN - CIP 96400 ~DUggerl -- n..Jensen - , 'Az.~&. ~~<!..cl~_~~~ 4690 CHAllOT DRIVE:. SUIT[ 200' PLEA5ANTON, CA 94588 PHONE, (925)221-9100. FA>O (925) 221-9300 ....... ~ I2IUIDI "0geWI8 PM PST I I \ \, '\ \ \ § ä t~~~&~,~~&~~~~§~~~~~~~~~ IkN. I 1m lß I-US ~ n~11 I urN - 1 i I ~ 1 t I ~ I ä ~ ~ t ~ ~ ii, I\' ~ I! '" ~ ~ I! 8 ij t ä ~1¡~t&~'~~&~t~~§~~~~~~~~~ ~!iI o i!í_' !e ~ a Q)fJ (II ¡, ¡!í. Map of Ultimate Right-of-Way Lines for Tassajara Roadi~nd· Fallon Road (Attachment 2) I~~$~~~t¡~~~~¡~~~~¡~~§~§~~~~~~~~ !1! . l'fa..l I 1+ I - I i I ij I t I ~ I ä ~ ~ ~ ~ ~ I\,) 1 c::> ~ -f. ~ Z <> t:j r:I '" ~ ~ ~ I!i I! 8 ~ t ä ä ~~~$~~~t¡~~~~~~t~~¡~¡§~§~~~~~~~~ ~ ~ ~~m t:j ~E<> I\' ~ ~ ;-t .·G~~t¡.~~~,~~~~~ !1! I ä I ¡¡; <> I t I ij 1 ä ~ ~ ~ ¡!¡ ~ I! 8 ~ t i!î ä ~~¡~~~t¡~¡~¡,~~~~~ I \ \ 1 ~ÅU&~~UU~U ~ .. ~ ~I 11 1= at I; ":" I 0). ~ ~ 10 ~ , . I ä ä I t I ä I ä ~ ~ a ~ .~ ~. ¡~. '" ~ ~ :of ~ I! I!I ¡;¡ ij ,ti ä ä ~ i!ìUUUUUU¡ ~ ~ U'I TASSAJARA ROAD AND FALLON ROAD PRECISE ULTIMATE ALIGNMENT PLAN CITY OF DUBLIN, ALAMEDA COUNTY, CALIFORNIA 'OR: CITY or DUBUN· - CIP 96400 ~Uggerl - 1'-Jensen - 'Aur &. AssocIates 46Da CHADO DRIVE. SUI1E 200 ' P TON. CA 945B8 . -.,.¡ =-000· ,~ .w.I'J- , , - --- -----. .._--. ~ \f_ -... ...h.__.____..._.._......_________..___..___..._ ..'." ..- .._...~..... :; + 8 S 8 ~ 8 ~ ( \ I " 8 ~ -I 8 » i C/) C/) » c.. ~ » » :D ~ 0 8 » C :::i CD + ·8 ~. 8 3 8 .~ + 8 ~ 8 ~~ o ~ _' !e ~ °CO~ ¡:: ~ ~ ~ Map of Ultimate Right-of-Way . Lines for Tassajara Road and Fallon Road (Attachment 2) -- -------. --. .. ... - -.-- ---_. .--...........-.--.----. _. .-------._-----_.__.__._--_._-"----_.-_...__-.~ ---... -......_---------- ., , I ~ + 8 f 8 i ~ I ... !!J + 8 ~ 8 m ~ 0 0 ¥ 8 ! ~ 0 -I 0 » I C/) C/) » c.. ! » :D » :D ¥ 0 8 » C ~ 8 ëâ + 8 ëâ !ì? 0 0 ëâ ~ m 8 i ... OJ ~ 8 ... dO GI + 8 ëâ -. + 8 ëâ f 8 , 0 0 ~ 8 :; + 0 0 " \ \ . ~ ;!;! Ð "Ii Ðe I I . , I \ \ . ;! ~Ð " \ I I .' ¡¡¡ I ,,- I ~ 11 'I & \ I \ \ . \ \ \ \. \, , \ " \ \ 6 TASSAJARA ROAD AND FALLON ROAD , PRECISE ULTIMATE ALIGNMENT PLAN CITY OF DUBLIN. ALAMEDA COUNTY. CALIFORNIA ;OR: . 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'I! i-+-'-, r-'--"'I -·..'-T-",--:--II-·.............¡·¡-r-;-· I ;-rr 1-1--1 r-,-, --roo" "I ii' . .,!: ii, II ' ! ¡ II ¡ i f I' ;! I ,¡ Ii I !; I ! ' !;! i' r Ii! 'I I I i ¡, . I j I II I . I ¡! ¡ II i Ii ¡I ! ¡I ¡ i : ¡ i "1+·"¡- -~t·,+ 4-rÎ"Ti" ·I¡-r~-·ft- f--I-t 'r-t--,-J-i-r·t ¡·-r·~i ·-·¡·I "--'i ,i 1 II. ¡ 'Ii I I': I II i.' ii", !' I :, I 1 . I ¡ ; : I I J' I II ¡ I! ! I I: ! i itt¡l···L. ttiii~~tlt tn-it-'-:! ¡II ill ¡¡III i III ¡ ¡ I I i Ii ¡I I ¡I I II -L.L"'L..L.l..___ILL_~__J..L~L_.J.L ._L;.1.1. .J_L;L..___L.L.,.¡ Map of Ultimate Right~of-Way Lines for TassajaraRoad and Fallon Road (Attachment 2) -I » en en » c.. » :n » :II o » o - IZ~?JY~ CITY OF DUBLIN 100 Civic Plaza, Dublin, California 94568 Website: http://www.ci.dublin.ca.us MITIGATED NEGATIVE DECLARATION Project Title: Tassajara Road and Fallon Road Ultimate Right-of-Way Alignment Description of Project: Establishment of an ultimate right-of-way alignment for the future widening of a portion of Tassajara Road to six (6) vehicle lanes and for the future construction of a portion of Fallon Road to include 4 (four) vehicle lanes within the Eastern Dublin planning area pursuant to Dublin Municipal Code Chapter 7.68. Project Location: For Tassajara Road, generally following the existing alignment of Tassajara Road from the Alameda County limit line to the north and the intersection of Tassajara Road and Shadow Hills Road to the south. Fallon Road will be constructed from the future intersection of Fallon Road and Tassajara Road to a point approximately 1,500 feet east of the intersection of Fallon Road and Tassajara Road. Name of Proponents: City of Dublin, Public Works Department Determination: I hereby find that although the above project could have a significant effect on the environment, there WILL NOT be a significant effect in this case because revisions in the project have been made and incorporated into the project, and because a Mitigated Negative Declaration will be adopted that mitigates any project-related impacts of this project to a level of insignificance through the adoption of mitigation measures and a Mitigation Monitoring Program. ~hr/ D te Copies of the Initial Study documenting the reasons to support the above finding are available at the City of Dublin, Public Works Department, 100 Civic Plaza, Dublin, CA 94568, or by calling (925) 833- 6630. Attachments Date Published: 4/0 e / 04- , Date Posted: Date Notice Mailed: Considered by: On: N.O.D. filed: Council Resolution No. Area Code (925) , City Manager 833-6650 . City Council 833-6650 . Personnel 833-6f Finance 833-6640 . Public Works/Engineering 833-6630 ' Parks & Community Ser Planning/Code Enforcement 833-6610 ' Building Inspection 833-6620 ' Fire ""'.f¡" ..e'· fl"1l ,!/¡ 1ì""'!i>'- ~ Æ\ ~ ; ß I;.;~j ï\fO ~.. "\~ ~ . ____o r'~~ ·_b"·'~" .' ~ 'i!'t'J~~\;:.;¡jr '" :i _,y..... - " " ____.-.,....____ Printed on Recycled Paper · - .<~ , t ..,.I ('\. ""(" r'ì( \~,--,O' ) Table of Contents Introduction..,................,...................................,......................................................,. ..,2 Applicant/ Contact Person...................... ........ ....,.......,.... ......,.... ....,... ....,...... ........... ...2 Project Location and Context....... ................ ............ ..'...... ....,............. ............. ..,..,.....2 Project Description... ........................ ..,.............. ....... ....................................... ........,. ,...3 Environmental Factors Potentially Affected ,............. ..,.. ..,...... ....,... ....,..... ..... ....... ...15 Evaluation of Environmental Impacts ..............................,............. ........,........,........,17 Attachment to Initial Study......... .............. ........'.... ,..,.... ,....,...... .....,......... ....,........ ....,29 1, Aesth.etics ....,.,........,.....,.,....,.,.....,...,..,.. ,...,.."...,..,..,......",....,...,.....",. ""."., .,29 2. Agricultural Resources......,....,.,...,.,........,."..,..,..."....,...,.",..·,···,···,·,··,··,···· ,3 5 3. Air Quality ...,. .,."....,.,. ."..,.... .",.".",..",...."",. .,... ".,.,..... "...... ,. ,.. .,. .,.,..,.,. '. ...35 4. Biological Resources............ ..,.. ..... ..........,..,...... ......... ....,.....,...... ......,..,.. .....40 5, Cultural Resources ,."..... .,.. ..,. .,.,....,...,.....,. .,. ..",. ,.,. ....... .,... ."..,. .',.,. ,...,...;. ...55 6, Geology and Soils.... .................. ............,..,.......... ..,..... ..,........ ..,.. ....,.......... ..,56 7, Hazards and Hazardous Materials....................,..........,..........,........,........,60 8, Hydrology and Water Quality ..................,....,....,..,........,...................,......,61 9, Land Use and Planning ............. ..............,..,............... ......... ....,.. ..,............ ..,64 10. Mineral Resources................ ..,..........'.... ....,.. ......,....................... ...... ...... ....66 11, Noise.. .",.'.,.".". ..,.. .,.. .'""..,...... ..,...",.. .,.. ,... ..,., ..",.,., .",.,........ ..",. .'",.'..... ...66 12, Population and Housing... ............ ........ ....,..,..,..,..,............... ............ ...,.. ..,68 13. Public Services.......,..,.... ........ ,...... ....,....,........,........,.;...................,....,.......,70 14, Recreation..",.,....,.".,..,....."......,..,...., ..,..".,......,.",.....",.,....",...,..".,...,..,.....71 15, Transportation/ Traffic....... ..........,........... ........ ..,................... ..,........,... ...., 72 16, Utilities and Service Systems..,......,...... ....,..... ......, ..,............. ....................73 17. Mandatory Findings of Significance ,..,....................,....,....,..,..................74 Initial Study Preparers"..,....,......"...........,.,.....,..,......,.".".."......,....,.,.",···,..,....·,··..,·,·· 7 6 Agencies and Organizations Consulted ......,.......,..,..,..,.. ..,....,....,..,....,...................., 76 References..".,.,..".,...,........".,.,.....,.,....".,.,......,..,.,...."....."...,......,.....,.....,.,.......,.....,...,. 76 J L/ r5Q -¿O'S City of Dublin Environmental Checklist/ Initial Study 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. Applicant/Contact Person City of Dublin Public Works Department 100 Civic Plaza Dublin CA 94568 Attn: Michael Stella, P.E. Project Location and Context The project is located in the northern area of the City of Dublin and in the unincorporated portion of Alameda County, south of the Alameda/ Contra Costa County line, It includes establishing a right-of-way alignment for both Tassajara Road and a portion of Fallon Road in accordance with Chapter 7,68 of the Dublin Municipal Code. Adoption of these right-of-way alignments establishes a more precise location for these roads, the general location of which have already been established in the City of Dublin Eastern Dublin General Plan and Specific Plan, The adoption of this alignment satisfies Mitigation Measur~ 3.3/14,0 of the Eastern Dublin EIR. The alignment facilitates the proposed widening of Tassajara Road, a major north-south roadway located between the 1-580 freeway and Contra Costa County, and facilitates the completion the northern portion of Fallon Road, a proposed road just east of and intersecting Tassajara Road, Tassajara Road is an existing two-lane road that is proposed to be widened to six lanes (three each in a northbound and southbound direction) in its ultimate configuration. Fallon Road is planned to have four travel lanes, two in each direction. Exhibit 1 depicts the regional setting of Dublin and Exhibit 2 shows the location of the project in context with nearby features. The project area is located within the Eastern Dublin Specific Plan and General Plan planning area. Existing land uses adjacent to the project area include (from north to south) scattered single family dwellings along the both sides of Tassajara Road, a City of Dublin Initial StudyfTassajara Road/Fallon Road Ultimate Precise Alignment Page 2 March 2004 ".-- 15'6b~Ul > firewood sales lot, Quarry Lane School on the east side of Tàs·sajara Road and the Kobold landscaping yard south of Quarry Lane School. The Haight, Silveria Ranch, and Nielsen properties were recently annexed to the City of Dublin by LAFCO Resolution No. 2003-01-A, and entitlements for 254 multi-family and single family homes were subsequently approved by the City of Dublin for the Haight and Silveria properties. The primary natural feature of the project area includes Tassajara Creek immediately west of the Tassajara Road. Two unnamed tributaries of Tassajara Creek presently flow under the existing road from the east. These are identified in this Initial Study as the Northern Tributary and the Southern Tributary. Exhibit 3 is an aerial photograph of the project area and Exhibit 4 shows photographs of existing site conditions along the right-of-way. Project Description T assajara Road overview Exhibit 5 depicts the proposed ultimate alignment and widening of Tassajara Road and Fallon Road. The proposed project involves establishing an ultimate precise alignment for the future widening of Tassajara Road between the intersection of Tassajara Road and Shadow Hill Drive to the south (Stn, 145+89, as shown on Exhibit 5), then northerly to the proposed new intersection with Fallon Road (Stn. 182 +53 back, Stn 1+00 forward), then northerly to the Alameda County / Contra Costa County limit line (Stn 27+ 41). The alignment conforms to the previously established right-of-way alignment for the southern segment of Tassajara Road adopted as Ordinance No, 20-99 by the City of Dublin, The ultimate configuration of Tassajara Road would include six travel lanes (three in each direction) as well as a landscaped center median, bicycle lanes, curb and gutter, sidewalks and parkways, traffic control devices, utilities, storm drain lines and landscaping. Improvements would connect to existing roadway improvements at the south end of the project area and will also connect with proposed improvements to the north, within Contra Costa County, Fallon Road overview The project would also include establishing an ultimate right-of-way width and alignment for a portion of Fallon Road, which would extend from the proposed intersection with Tassajara Road (Station 250+66) southeasterly to the southerly boundary of the Silveria Ranch property (Stn. 235 + 50), Fallon Road does not currently exist, although this roadway is a planned thoroughfare as shown in the Eastern Dublin General Plan and Specific Plan. Fallon Road is planned as a four-lane roadway (two lanes in each direction) as well as a landscaped center median, bicycle lanes, curb and gutter, sidewalks and parkways, traffic control devices, utilities, storm drains and landscaping, Improvements are proposed to connect with the proposed extension of Fallon Road through the Dublin Ranch property to the Silveria Ranch boundary as governed by an Improvement Agreement between the City of Dublin and DR Acquisitions LLC recorded as Series Number 2001058052, Fallon Road currently exists approximately 1700 feet south of the proposed Dublin Ranch extension, Following the establishment of ultimate rights-of-way for both roads, each road will eventually be widened and/ or constructed within the approved right-of-way lines, In City of Dublin Initial StudyfTassajara Road/Fallon Road Ultimate Precise Alignment Page 3 March 2004 '" 1tJ¿ ~~ the interim period before the widening and/ or construction-occurs, the Dublin Municipal Code prohibits construction of new buildings or structures or expansion of existing private facilities that presently lie within the ultimate rights-of-way for these two roads, once ultimate precise alignments are adopted by the City of Dublin. Exhibits 6a-k shown individual plats of proposed right-of-way acquisition of real property to accommodate road widenings. Exhibit 7 shows local property ownerships adjacent to the roadways, In addition to establishing ultimate precise roadway alignments, other key features of the proposed project would include: · Acquisition of rights-of-way from various property owners along both sides of existing Tassajara Road to allow for roadway widening as identified on Exhibits 6 a-k. An ultimate right-of-way of 128 feet is planned for Tassajara Road, pursuant to the Eastern Dublin Specific Plan. This is discussed further in Section 4,7, Land Use. A portion of the proposed Tassajara Road right-of-way would contain 122 feet, accounting for a separate multi-use trail adjacent to the road right-of way. · The proposed alignment of Tassajara Road would swing in an easterly direction from its present location to provide maximum protection for Tassajara Creek. The new alignment would include a four-way, signalized intersection with Fallon Road on the current Silveria Ranch property, · Acquisition of right-of-of-way to allow for the construction of Fallon Road with an ultimate width of 110 feet, to include four vehicle travel lanes (two each direction), bicycle lanes on each side of the road, a landscaped median and parkways and sidewalks on each side of the road. · Construction of new curb, gutter and sidewalks adjacent to the widened Tassajara Road. Along a portion of the westerly side of the road, the sidewalk would be replaced by a multi-use trail that would generally parallel the road, but which would be located closer to Tassajara Creek, as allowed by the City's adopted Eastern Dublin Comprehensive Stream Restoration Program. · Grading of properties to the two roads to allow for planned improvements to be constructed, · Construction of new retaining walls of varying heights between the new alignment of Tassajara Road and Tassajara Creek to stabilize the creek bank. · Replacement of two existing culverts at the Northern and Southern Tributaries with two clear-span bridges over these watercourses. New storm drainage outfalls into Tassajara Creek would also be included at the two new bridges. In- stream improvements are also proposed within the Northern Tributary to provide a more gradual elevation change between the flow line of the Tributary and Tassajara Creek. This improvement is proposed to include grading of the creek bed and placement of cobble and boulders to ensure that the creekbed has a natural appearance, · Construction of a pedestrian and bicycle overcrossing over the proposed southbound free right-turn lane on Tassajara Road at the Fallon Road intersection, This would allow southbound traffic to move unimpeded through the intersection while eliminating potential conflicts with pedestrian and bicycle circulation, City of Dublin Initial StudyfTassajara Road/Fallon Road Ultimate Precise Alignment Page 4 March 2004 /Î cTf)705" . Undergrounding and/ or extension of existing utilities adjacent to or within the two roads. This would include undergrounding existing overhead electrical lines adjacent to Tassajara Road and construction of new potable water, recycled water, sewer and drainage lines within the right-of-way of Tassajara Road, New underground facilities would also be constructed within the right-of-way of Fallon Road. Phasing of improvements Construction of two additional travel lanes on Tassajara Road, for a total of four lanes, would occur as a result of land development within the City of Dublin along this corridor following approval of this environmental document and issuance of any other required regulatory permits. Construction of the final two lanes, resulting in an ultimate configuration of 6 travel lanes, would occur in the future and would be triggered by future planned growth to the north in the southerly portion of Contra Costa County. This last phase of Tassajara Road construction will be funded by fees collected pursuant to the Joint Exercise of Powers Agreement pertairúng to Dublin-Contra Costa Fees by and between City of Dublin and Contra Costa County executed on June 1, 2000, Fallon Road is proposed to be constructed in two phases, The outer lanes would be constructed as part of development of the adjoining Haight/ Silveria Ranch project. Inner lanes to complete the improvements would be constructed when warranted by traffic demands at a future date. Proposed funding - Funding of the additional two travel lanes on Tassajara Road (for a total of 4 lanes), is proposed to be partially financed by Traffic Impact Fees (TIF) paid to the City of Dublin by project developers in Eastern Dublin, although frontage improvements and any improvements not utilized in the ultimate 6-lane configuration would be financed directly by the developers. Working with adjacent land owners, the City of Dublin may also use other techniques to finance the proposed improvements to Tassajara Road and Fallon Road, including but not limited to benefit districts, assessment districts, reimbursement agreements and other methods of infrastructure finance. Ultimate construction of the final two travel lanes would be funded by traffic impact fees imposed and collected in Contra Costa County and provided to the City of Dublin for the improvement of Tassajara Road via the above-referenced agreement. City of Dublin Initial Studyffassajara Road/Fallon Road Ultimate Precise Alignment Page 5 March 2004 / g 62; ?.Os: .2 " õ 'ë <.J ~ ~ Æ v. .j -< )( '::J ~ õ: Exhibit 1 REGIONAL LOCATION CITY OF DUBLIN TASSAJARA ROAD WIDENING NEGATIVE DECLARATION N ~ å o I 2 , 8 10 miles \ "::., ~~ ".- "::",. ;\-' t'~~ <~ - <. ~\ W ... ¡¡j ! \ \ . \ . \ , \ . \ , \ . p g; ¡ ú >- .\' 5 ~ Q .~ :; '. "' UJ (.) 0: C « ... UJ UJ 0: ;:.. « 0: \:) UJ c: i;3 ~ 0: ~ "' 0: :.: .... 0: ët :!~ æª§ i!=:~ "'co'" ~~(j a: z o ~ z <:: CI) <:: UJ ....J 0- '___u u. o >- ~ ü z o :2 <:: CJ: z <:: CI) LL. o >- ~ ü 6!-t / p,/%Ò00'¡'''' ,,0' C; ,¡.~qY'4\!~ ,,o,~\i" /' z I-:J ><rn w::;) 1-0 N Z u. 80 1->- ut::: wU -'z 0- a:J: c.1- i .. :c :c >< w 2D~ .. "š ::¡ >- .. õ " 'ê oS ëñ ~ .. (.) C -e- c.. ~ ,.... c z =s .~ " z Z w c 3:z cQ z«~ _Oa: ..Ja:< IXI«-' ~a:frl c«o LL'")W 0«2: >-CI)~ ~CI)~ õ~~ CITY OF DUBLIN TASSAJARA ROAD WIDENING NEGATIVE DECLARATION Exhibit 3 AERIAL PHOTO /" ,_I ~J 6òwS ~ ~ - o ·E g Õ ü " Æ ~ Æ " ·ã Õ! -< )( Q ~ õõ N ! 1 All photos look North along road f CITY OF DUBLIN TASSAJARA ROAD WIDENING NEGATIVE DECLARATION Exhibit 4a SITE PHOTOS ---- ;)ð i -zOS- All photos look North along road N ç 1 ~ ~ õ u " ~ ~ ;; co ~ ~ " '~ < )( ':) ~ 'E CITY OF DUBLIN TASSAJARA ROAD WIDENING NEGATIVE DECLARATION Exhibit 4b SITE PHOTOS ___"_,.__.__..__n_._~_____~_.. _ --,,-_.~---_.~ ( 1'1 ~ ~i I II ~ II ~ i ~ ~ ~ ~ i . !~b ~;;~I ¡~I~ § ¡~c ~ ~ ~ .. ~- i!i" III l'i ~ ~'i i!i "t ~ "t ~ i ! ~ !! ... l'i ¡II ~~ i!i . ~ ~11!!i i~f.I ~I .. ~ I! ¡- j!i'" ~"t I / /' / ?-) ~::::-'--O' ClLIÐ!T ~ IE .,,,,,,.,, ~i;¡. "- " ì ~ ! ... !i\ "11 Ë ~ I; iii I m~ g¡ž¡ i !i\2... ., ~C! 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Exhibit 5a PROPOSED ROAD ALIGNMENT CITY OF DUBLIN TASSAJARA ROAD WIDENING N¡::r.:4TI\lC ncf'" ^D^Tln~1 o ::¡ -<0 - O-f -n-< °0 5j"TI r -0 Zc 'OJ oC >Z -0 .. - -I» » rl » 3: m o » o O· c Z -f -< -u :D m () - en m c r -i -- .~ » -i m » r - G> ~z C~ óm :D ~z »-i -u r » z J ~ ~~ r-l---- \ L.~"",\IIIIAD , I ,I /~.........-..... ,,- ~/ ~- -t » en Cf) » e... » ]] » ]] o » o » z o ." » r r o Z ]] o » o I .......- ~ TASSAJARA ROAD AND FALLON ROAD PRECISE ULTIMATE ALIGNMENT PLAN CITY OF DUBLIN. ALAMEDA COUNTY. CALIFORNIA fORI CITY Of DUBUN - CIP 96.400 ~Uggerl - d? I I'-Jensen - '6 \ ,^zar &. Associates c-· 4690 CHABOT DRIVE. SUl1£ 200 . PlEASANTON. CA 94588 \ PHONE: (925) 227-9100' FAX: (925) 227-9300 \ ) ~ ( ~ r ~ " ~ \ \ w /"'"'-- J / '\ I/) * GI~\IIe1dgo\\T \Predft ~\SNT""", 1M1I03 1I2t22&I""$1 ~ , . ~ , ª to OJ r~ or gž b \ ~ ~ 1, .' ~~.- ./'----- '/C: . ~ ~ ~ !!! *'ÔI\)!ii Ij:! i§ ~ , ~¡ ~~¡ ~ ~i ~¡~ ~ ~I i~~ Ii · ~~ 1 ž~ '« 1'1"" 8~ ~~ ::!J ~"" ::~ ,,~ ~"I:J i::o 3Ji 'ii\;¡ o({) (Q= ~~ 8~ ~I ~; ~ ~i ! ~cn ~ j!!~ ~ ~~ i 2~ $ !i\ã ~ l . ~ ~ , ~ ~ ~ , N " . , ~ a r--¡ ) . 0 x /~ ~\ ~~D "~ ~'/~ ~~ij ( (J, ~ ~}I--- ~ ) ~ §;~. <5 ~ , tJl ~i'D ~ ~ » // /-''''i~~' !~-'~~ ¢ /tJl =^ 10 Ow n ,\00 a 2-.r- ' ò~ o <.h ~ J> "1J Z ;\ ... to OJ (11 I Or- . g Ž .þ.. I· o o tJl I o ~ , ¡,¿ ~ 6 Exhibit 5b T,ð,88AJARA ROAD ANP FALLON ROAD PROPOSED ROAD ALIGNMENT PRECIßE ULTIMATE ALlGNMISNT PLAN CITY OF DUBLIN CITY QF DUBLIN, : ALAMEDA ·.COUNTY, ØAUFORNI~ T ASSAJARA ROAD WIDENING fo/R: CITY Of' D!J~PN - CIP 964pO . ..~ '1 \Prft:IR PIan-.sH.f I2I11Ia ~ fft m ~~ ~õ!~ ~ ~j ~u p. ~~ j~~ !i ~¡ Q¡ Ç)~ ~:i! !!-< ~~ ¡!II ~~ ~i c:~ Q.., "'Ë õ!i! !:J~ ~~ fi ~~ ~ 1iI~ ~ I~ ¡ ~; a ~ "! ~ ~ õ ú)ë s: II! ~ ~ Exhibit 5c PROPOSED ROAD ALIGNMENT CITY OF DUBLIN T ASSAJARA ROAD WIDENING . ?J.?J.fò ~ ,,).oS ~?J.y..fò oo"ta9 . .. )..0.\" \ .' . u ",-. \ '\ \ . y..o). l'\ '0·. ?J.~\~ ~ / r·" o - ~; 'I L :> c¡) ~~ \ ~ ~ UJ /', ",0 o~ t;; o I· c ~- U\ . TASS AJAR A ROAD AND FALLON ROAD PRECISE ULTIMATE ALIGNMENT PLAN CITY OF DUBLIN, ALAMEDA COUNTY, CALIFORNIA FOR: CITY OF DUBLIN - CIP 96400 ~Uggerl - 1'-Jensen - ,^zar &. 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CA 9451!8 PHONE: (925) 227-.9100'..F.A.X: (925)._~~-:~~_u__ -"-----.... .... ~_.,..'--._-_...._._~._~. .-,.----,..--".,. ...."..-.,...~..-.. ....,..............-_._~..."". _...._,. --. .."'-,,--..----.-.. ....,..- .. _ __....._.... '._, .___.._~ .. _._._.... no' _.._,_~,_".., .,._'._____~._.._ ._.._.n _ _~."___"__'..._"...._ ___..~_,... __.,~___~..__....__.._,"__,.._v_".·__·.·..___..·__., '__"'_ _ ..-.----..-.~--_.--- ¡ + 8 ~ + 8 , 8 f \ 0 - .- 0 \ ~ 0 - ~ + Iii 8 ee ~ tR + ~ 8 8 ~ ~ 8 0 I ~ f 8 8 :j I , ~ " \ \ ~ I " 8 \ :j ¥ ~ -I 8 ì -I 8 » - » C/) ..... 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I" "., I :: + l-~.' I, ; iHe~~-1-J.J ; I : ¡, ilr i \. i ¡ '; \ · !uJS:L ! ¡ : 0 : i i ¡! I I,II: ,¡ ¡ ii' i ;! i ,i , ! I ¡ ,~ ¡ ¡ ,. .! . î.. . . ¡ . ~ ' !ò CITY OF DUBLIN, ALAMEDA COUNTY, CALIFORNIA 4690 CHABOT DRIVE, SUITE 200 . PlEASANTON, CA 94588 rOR: CITY or DUBUN - CIP 96400 PHONE; (925) 227-9100' FAX. (925) 227-9300 \ ~ ¡o ~ ¡o ~ ,'" ¡o - ..-.-- ~~ ~ 111 ~'ô""'lj g 0% U'I, P § Exhibit 5j PROPOSED ROAD ALIGNMENT CITY OF DUBLIN TASSAJARA ROAD WIDENING NEGATIVE DECLARATION MATCH LINE SEE SHEET 2 \ ~~ \ /' ~ \~' ~ ~~ f7~ ~ n~ . õ~~~ WC?:! ~~,l C!JÐ"i t:::I ..... co.... -,°0 CD C? . lL.oO a:caz Wo !!cooCD -ZW a..- c15 .CD "" ~ ~ ..:, o " g õ u ,.:. 0> ä; .>: ¡¡; '" R,O, W PER ORDINANCE L NO, 20-99 6: ' 1 i ¡ ri -ð ~ :< >< ';) ~ ;; SOURCE: Ruggeri-Jensen-Azar & Associates, 2-6-2004, CITY OF DUBLIN TASSAJARA ROAD WIDENING NEGATIVE DECLARATION Iff· 1---- ~/ /I / ~¡ I / ~I . J I' !J · ¡ I'~ ~. ,[3 0) , ;/.1' ~I ~ ~ CO ;::c fl:\::)~ ~.. r--;' ,'~C'\ .../' I 10) II ~ f 1;:o:t'Q:: a¡ ~ (jj I . " ¡ t:::I I I11I llill 11111 ~ II ¡ i : ~ g j III/::!-' I II I' ~~~ ~ I! ~,~~g ~I ~ I ""'<~ W ~ il.' I~ I:· ~II ~ g ~ :11Cf)<~ 1/li ~~o 97' I f 6' i II 3"3 Db 7..p~ -- - LINE L2 L3 LINE TABLE BEARING N53'S4'16"E N78'S1 '39 'W DISTANCE 49.97' 31,29' LEGEND P,Q.B, POINT OF BEGINNING SQ,FT, SQUARE FEET - - NEW RIGHT OF WAY LINE ----- EXISTING PROPERTY LINE - - - - - CONTROL LINE R,Q.W. RIGHT OF WAY -N- R,O,W, PER TRACT 6925 DUBLIN RANCH , I I I I I Exhibit 6a RIGHT-OF-WAY ACQUISITIONS LEGEND P,Q,S, POINT OF BEGINNING (R) RADiAl SQ,FT, SQUARE FEET - - NEW RIGHT OF WAY UNE ----- EXISTING PR.OPERTY UNE - - - - - CONTROL UNE R.Q,W. RIGHT OF WAY MATCH UNE LINE L19 L20 L21 L22 L2 LINE TABLE BEARING SOO'34'48"W S82'07'31 "W NOJ"24'16-E S55'O 1 '21 "W I S5J"54'16"W 29 SOFT.:t ...~SOO'34'48"W , , 34.44' (L 19) N03'24'16-E 34.74' (L21) , ._--- P,O,8. --582"07'31 "W ARA~:lRC£L 1.73' (L2O) KOBOLD PARCEL ~ 0- ~ - o 1, g Õ () ,;. .!1 11 ¡¡; OJ ~. " .. ~ .( ð ~ '2 SOURCE: Ruggeri-Jensen-Azar & Associates, 8-06-2003, CITY OF DUBLIN TASSAJARA ROAD WIDENING NEGATIVE DECLARATION DISTANCE 34.44 ' 1.73' 34.74' 22.44 ' 54.42' ~ -N- ~ -0 C?IØ 10.... 0- 00 ,0 .' OW ZOCD -0 . ....'0 oZ CDCI) CDW ž¡ ~CI) ~4 ðQ20S I I I ,/// /' /' /" /" --- Exhibit 6b RIGHT-OF-WAY ACQUISITIONS , . Í/6J_SQ.FT;;I:----------- .---- (0.02 AæES:t) N8S'38'27"E 33.31' EXISTING R,O,W. --~, ~5 CI Li :- V ~ , 0" ~ '-.....10 __ 0.....----:;:.. /--c::r---- .0 ... OW ZOCD -0 , ...·0 oZ CD CD CDW .. æ Zw ::cø MATCH UNE 8EE 8HEET 4 . I I ~ ~ o ·2 .g Õ () " " ]1 Æ --- ,I4J, ~ ~ _¥! '£\i Õ$! ~ ~ 00 ~ Iw) ~, ~~ mgg ,..... CD. W . ~ =:2/ ~~ f~ Ž; I A. a: I oCw II e Ii iJ If 31 35' 00 ~ºs- I aiL VERlA RANCH. LLC APN: 085 -0002-008-02 8ERIE8 NO. 88-447188 ~:.-:::.~~:::..-=; ------ '" /' \ I I L i IJ-'=1 -1 i ! r /__.______,___~~~=~-.J / i / I /- , LINE L4 L17 L18 LINE TABLE BEARING N04'OO '20 "E S04'36 '46 "W N8S'J8 '27"E DISTANCE 107.15' 70,29' 6.44' EXISTING R,O,W. EASEMENT - N - <> '~ .( >< ':) " c;¡ SOURCE: Ruggeri-Jensen-Azar & Associates. 8-06-2003, CITY OF DUBLIN TASSAJARA ROAD WIDENING NEGATIVE DECLARATION --- --- ----- --- LEGEND P,Q,ß, POINT OF BEGINNING SQ. FT. SQUARE FEET NEW RIGHT OF WAY LINE EXISTING PROPERTY LINE CONTROL LINE RIGHT OF WAY I ! I-~- ~ , R,Q.W, Exhibit 6c RIGHT-Of-WAY ACQUISITIONS BRAGG" 81LVA APN: 888 -000.-003 8ERI~'83-333881 \\ LEGEND "'--. \\ P,Q,B. POINT OF BEGINNING ~6'O;; ,..JL (R) RADIAL S).I'~~;.6'~........ l SQ.FT. SQUARE FEET {.? O"¡~6'''''' ~ ~ - - NEW RIGHT OF WAY LINE ~.96" J - - - - - EXISTING PROPERTY LINE II ----- CONTROL LINE N6, . I { R,Q,W, RIGHT OF WAY --!@'.?q " J f 9;>' .."1 ~ ~" ~ ,. !;:SI' ~ ~~'I J!II~ c:::; "It q:: 3~ðb2~ -l I , § ~ ø.... ~tf6.~~ tl~~ .$,~atb~ !b~ ..!!J..O· q ~ fl.. {þ'b ~ ",~ .~ ,/" , /// /~ -; /,/ ///, SILVERIA RANCH. LLC~~~; APN: 886 -0002-00~,/ 8ERIE8 NO. 88·.~W //// /'/"./ / // '/ . //// // // ////. dØfY··// ' /// / ' // // / /. d/' £XI5T1NG-.-:?/ :J.i;/ // ./ '-:,<./ //// .,/' ~ ..... // ,/ /"" /~ /~ / - N - TJ5.29.F;% (J." ~ ~~ . ~ / :;/ ~ II?< / / ! ~ / / I I ¡ / I / I L$ ---~ \ \ --~ ..... T-~ LE' 8EE pc:~~ ....n"'f' __ /I ~ R,O,W. VARI£5 LlN£ TABL£ LINE BEARING L5 582·23'14"£ US 585·23'14"£ .! !..5- Ñ8J-J5V9'W/EI7D:. _ __, - - - (rr/ (11-1536; '-- N83"73Š~21i(R) ?R-; 1s39T DISTANC£ 3.74' 3.00' o " ~ õ u ,;. () 11 ¡; '" ,;; .~ ? .:( >< Q ~ ëë SOURCE: Ruggeri-Jensen-Azar & Associates, 8-06-2003, CITY OF DUBLIN TASSAJARA ROAD WIDENING NEGATIVE DECLARATION Exhibit 6d RIGHT-Of-WAY ACQUISITIONS (J~ -.I,~ -.I"iIf ~a" 0':- ~a' ~Øæ ~O ~~'i· ~æe ~~~ ctJ 4: W ~ctJ CURVE TABLE CURVE RADIUS DEL TA LENGTH C1 767,00' 8'54'01" "'" 9æ a,.. 0""" ,a ~, :!t'o~ :::i 0 - , o· :~ ate ;iW 4:1 ~ctJ ~ ~ JO,BU SQ.FT.:t (0. 7t AatES%) /~8'48"W(R) lÚOO'SS'2'"'!~ _2- - ~ , 'tJ ~...= 4,2:J "- ß!¿r/¡YÆ..== ~~, N60'04'16"W (t?1- \\~ \ \~\ \ \ \ \\ \ \ \ \ II \ \ \ - o " g õ () ,,:. ø :ï! ¡;; '" ,. ~ .~ ;;: >< ~ " ;¡¡ SOURCE: Ruggeri-Jensen-Azar & Associates, 8-06-2003, CITY OF DUBLIN TASSAJARA ROAD WIDENING NEGATIVE DECLARATION 37 d-d-Q';; PARŒ1. 2 31,087 SQ.FT.:t (0.71 ACR£S:J:) ../~.-/ , ¡ !! I /l/,/ , ''/ ' /11// /, / II! /// 1/ I! .fl// III /. .I! LEGEND 1/1, P.O,S, POINT OF¡'~NNING (R) , RADIAL III . II/ SQ.FT, SQU¡ F T - - NEW ~ T OF WAY LINE ----- EXI ',J;Z PROPERTY LINE ----- CO~~r<, L LINE R.O,W, ~ OF WAY III , Exhibit 6e RIGHT-OF-WAY ACQUISITIONS 38&;).05 ª ~ LEGEND P.O.B. POINT OF BEGINNING P,O.C. POINT OF COMMENCEMENT - - NEW RIGHT OF WAY LINE ----- EXISTING PROPERTY LINE - - - - - CONTROL LINE (R) RADIAL SO.FT, SQUARE FEET R.O.W. 503'11 '41 liE 121.78' -21,680 so.n::t (0.50 ACRES:t) I I -L I I~ ,...: ~fJ ~' ~ ~ tJ{þ';; ~ cl!lfJ~ I ' ace ~ :to I R>' ~ fJ ø § ~ "A~ ~ tJ1;¡O' ~v "'" 8~tJ{þ ;¡ ll..-.l!i ø ~/~ ~ iI .,-lti9"08' II ....-..;)--_~8J~,.-v ~. ,C1) ~'-J ""'~~ ~I\:i II 12(R) ~ NOO'34'0 1 "E 102,53' _ - ~fi) SILVERIA RANCH, LL.C _5624' 45 APN: 886 -0002-008-02 5 8ERIES NO, 88-447188 '\ '\ CURVE TABLE ''\'\'\ CURVE RADIUS DELTA LENGTH _ '\'\" C2 830,00' 2'20'30- 33.92' , C3 1078,00' 746'31- 146.29' C4 237.00' 11'24'08- 47.16' cs 219,00' 0'55'54- 3.56' C6 219,00' 10'26'56- 39.94' o ë: ~ Õ u ;;. ø ~ æ '" UNE L6 L7 L12 Lt3 Lt4 8EE SHEET 10 N89'25'59 "W 62,10' " .'3 ~ ..( >< ç:) ~ ;;;: SOURCE: Ruggeri-Jensen-Azar & Associates, 8-06-2003. CITY OF DUBLIN TASSAJARA ROAD WIDENING NEGATIVE DECLARATION Exhibit 61 RIGHT-OF-WAY ACQUISITIONS 3D¡ 0+ dOS- I ~ ~ DISTANCE 28.11' 76,22' 53.45' 71766 SQ.F1'.:t (1.81 ACRESZ) MOLLER TRUS1i APN: 885 -0001- 01 SERIES NO. 91-01 808 ---- ~ ---- '0. C? ð~ & ~ ~. ,,~~~~~ sa /~Q)~ 9&~'~~ // c:::> ~\»~C& - . ,/p.o~,e, Z~~~. _ _c~"" /.13..../ ~/''''' ..--- ~ /~. ,,~\ ,,/// \ A ~e'cL 2 / /' /:~~.'J~cr. / /'ff!:~.~ ¿i' ~~~) /If .0. ~ '4 I tI (0. o ë ~ Õ (.J ,,;. " ] ;;; '" LEGEND P,O,S, POINT OF BEGINNING (R) RADIAL SQ. FT. SQUARE FEET - - NEW RIGHT OF WAY UNE ----- EXISTING PROPERTY UNE - - - - - CONTROL UNE R.O, W, RIGHT OF WAY ,¡ ¡ ; ¡/ ¡i / " // if " ;/ 'I /1 í lì 'I ~ " ~ .~ -< >< ~ ~ ëõ SOURCE: Ruggeri-Jensen-Azar & Associates, 8-06-2003, CITY OF DUBLIN TASSAJARA ROAD WIDENING NEGATIVE DECLARATION Exhibit 6g RIGHT-OF-WAY ACQUISITIONS MATCH LINE SEE SHEET 8 '-10 óì6 :JD5 ----------- / / I' I / I / ~\ / n:~ í &~tb "'~~) ~ ~ ft~ ~,,,, ) ~~ ;-" "'" q¡,,6 ~. 9.~'lf,fþ / ~, / " --..-------, ~ 0- ~ - o ë: g Õ U ,:. '" ~ ¡; '" .... .. v < >< ~ ~ -æ ~MA TCH LINE SEE SHEET 7 SOURCE: Ruggeri-Jensen-Azar & Associates, 8-06-2003. CITY OF DUBLIN TASSAJARA ROAD WIDENING NEGATIVE DECLARATION EXISTING R,Q,W, LEGEND P,O.B, POINT OF BEGINNING (R) RADIAL SQ.FT. SQUARE ÆET - - NEW RIGHT OF WAY LINE ----- EXISTING PROPERTY LINE - - - - - CONTROL LINE R.O.W, RIGHT OF WAY MOLLER TRUST / APN: 885 -0001-001 _B~'~-/~~ Exhibit 6h RIGHT-OF-WAY ACQUISITIONS "-II ùb ;;).D5 ~ ~ liNE TABLE liNE BEARING U1 SO'/47'16"W UO N23'S8'S9"W DISTANCE 32,S9' 136,84' . tV' ~ ...~. f;) ~ .,~ )0 ~~ ~ \.1), ,v ç! \.,J <! TIPPER APN: 8S8 -0004-001 , SERIES NO. 88-018417 ~ '"', (l ""~ ~ 1 I , I f I II f ¿ 2. MOLLER TRUST APN: 885 -0001-001 SERIES NC? 87-01'4808 o ë: ;g Õ u '" '" :ïl ¡; '" LEGEND P,Q,8. POINT OF BEGINNING P,Q,C, POINT OF COMMENCEMENT R. O. W. (R) RADIAL CH LINE - - SQ,FT, SQUARE FEET SHEET 8 - - NEW RIGHT OF WAY LINE ----- EXISTlNG RIGHT OF WAY LINE - - - - - CONTROL LINE R. Q, W, RIGHT OF WAY ... '~ < >< ~ ~ õë SOURCE: Ruggeri-Jensen-Azar & Associates. 8-06-2003, CITY OF DUBLIN TASSAJARA ROAD WIDENING NEGATIVE DECLARATION Exhibit 6i RIGHT-OF-WAY ACQUISITIONS '~~6'.g. /',>.5' ~~/'. '<..)'. ~ ~~ 5~l~t, ~ :N~99~/~ '" / '" <> vA ~ ~_~ Q) '~ >~~ 7~. <~:Qf RANCH'~ APN: 885 -0002-008 2 8ERI~. 88- <\;f' / / '> - / / . ~, /- PARŒL 1 ~ 1~lU5 SQ.FT.ž I (J.~CRES%) - -\ I ' I ¡ P~I T OF BEGINNING RA IAL S ARE FEET æw RIGHT OF WAY UNE STING PROPERTY UNE ONiROL UNE fiGHT OF WAY I / / '" ~ '" ~ LEGEND P,Q,8, (R) SQ,FT, o c: g Õ u " '" ~ @ co -- ----- ----- R.Q,W, ,~ .( >< '.;) ~ ëõ SOURCE: Ruggeri-Jensen-Azar & Associates. 8-06-2003, CITY OF DUBLIN TASSAJARA ROAD WIDENING NEGATIVE DECLARATION I.-/z ðb ?O~ "'" " '. ", ....... "" , ~~ '1.~ ':Q" ~ ~o\ (P~7 ~,~ . ~~ OO~ Cot~~ ...0· '!a0t": ~ Cot tõ ,c;, Exhibit 6j RIGHT-OF-WAY ACQUISITIONS í 43 ð-r- ~DS- ~ PARCEL 1 14J,845 SQ.n.:t (J.JO ACR£S:t) 81L VERlA RANCH. LLC APN: 885 -0002-008-02 SERIES NO. 88-4471ee ':;t) \\ ~ ~ ~ c::ø .~ _;'6~R) - -6-=-1')~ 0 -53 . \J') U' ~ o 0_ ~¡ ""'" , ~~~t 6'58 ~-- 5J_ -- - -- \"","0 \\ \\ --~. -;.~ ""ù(R\.. \ ~ - 'I')J-"" - J" '~~ I')'J8};-/ \ ~ os 5J. - \ 7ó'oR70" -//// i.S'.s ..>- <".. \ J <ó'}... L . \ '<6'''(.- APN: 885 ~0001-002 \ _8 NO. '446131 \ ,,/- .... ....~O~(R) .. S~'5J ' ~ ~ LEGEND P.Q,S, POINT OF BEGINNING (R) RADIAL SQ.FT, SQUARE FEET _ _ NEW RIGHT OF WAY UNE ----- EXISTING PROPERTY UNE - - - - - CONTROL UNE R,Q,W. RIGHT OF WAY - ~ ~ õ u ,;. ø ] ã; OJ " ·e ~ -< >( ':I ~ -¡¡; SOURCE: Ruggeri-Jensen-Azar & Associates. 8-06-2003, CITY OF DUBLIN TASSAJARA ROAD WIDENING NEGATIVE DECLARATION Exhibit 6k RIGHT-OF-WAY ACQUISITIONS -"'" . . .",.,..... - ..... .." coùN'T't' -"'".. COSí,A -"'".. CONí~~ _"'". ;oùN'T't' . . -"'" l..ANlEO,A .._"'" ,A .' -"'" . . -"'" . . -"'" ª ~ .Q c ,2 '6 u ,,:. .!2 11 Æ ~ '~ < ~ ~ ;;: CITY OF DUBLIN TASSAJARA ROAD WIDENING NEGATIVE DECLARATION L)Lj r5b d- OS -"'" . . .."",,-.. MOLLER MISSION PEAK HOMES County Right-ai-Way WALLIS RANCH (LlN) SILVERIA NIELSEN QUARRY LANE SCHOOL (ARAC) KOBOLD SHEA HOMES/ MSSH DUBLIN DEVELOPMENT LLC, Exhibit 7 PROPERTY OWNERSHIP N £ A ........';:.,..-., Project Site o 300 [ , 600 1200 leet , I L/5'lfJ?C6 1, Project description: Establishment of an ultimate right-of-way, future acquisition of additional right-of-way and widening of Tassajara Road from two to four travel lanes north of the existing City of Dublin limit line to the Alameda County-Contra Costa County line, with the eventual widening to six travel lanes plus additional turning lanes. Establishment of an ultimate right-of- way line and future acquisition of property for Fallon Road from the planned intersection of Tassajara Road and Fallon Road to a point approximately 1400 feet east. Other improvements include installation of new curb, gutters, sidewalks, bicycle lanes adjacent to the widened roads, utility extensions and undergrounding and installation of larger culverts under existing streams and drainage channels. 2. Lead agency: City of Dublin Public Works Department 100 Civic Plaza Dublin CA 94568 3. Contact person: Michael Stella, P .E, Senior Civil Engineer (925) 833 6630 4. Project location: Generally located along the existing alignment of Tassajara Road, south of the existing Alameda/ Contra Costa County line and north of the intersection of Shadow Hills Drive and Tassajara Road in the Eastern Dublin area, 5. Project sponsor: City of Dublin 6. General Plan designation: County of Alameda: Agriculture City of Dublin: Residential (various densities) and Open Space 7. Zoning: County of Alameda (northerly portion): Agriculture & Rural Residential City of Dublin (southerly portion): Planned Development City of Dublin Initial Studyffassajara Road/Fallon Road Ultimate Precise Alignment Page 13 March 2004 o/t.¡¿ OfdO~ 8, Public agency required approvals: · Approval of Mitigated Negative Declaration (City of Dublin) · Approval of Ultimate Precise Right-of-Way line for portions of Tassajara Road and Fallon Road (City of Dublin) · Approval of Road Improvement Plans for portions of Tassajara Road and Fallon Road (City of Dublin) · Approval of a 404 Nationwide Permit for new drainage outfalls into nearby creeks and drainage courses (Army Corps of Engineers) (probable) · Approval of a Streambed Alteration Agreement for new bridges over Tassajara Creek drainage tributaries (California Department of Fish and Game) (probable) · Approval by San Francisco Bay Regional Water Quality Control Board for improvements within creeks and drainage courses (probable) · Notice of Intent to State Water Resources Control Board (probable) · Consultation with V,S, Fish and Wildlife Service (probable) City of Dublin Initial Studyrrassajara Road/Fallon Road Ultimate Precise Alignment Page 14 March 2004 .1}7 úb dDS' Environmental Factors Potentially Affected 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. x Aesthetics - Agricul tural x Air Quality Resources x Biological x Cultural Resources x Geology / Soils Resources - Hazards and x Hydrology / Water x Land Use/ Hazardous Quality Planning Materials - Mineral Resources x Noise - Population/ Housing - Public Services - Recreation x Transportation/ Circulation - Utilities / Service - Mandatory Systems Findings of Significance Determination (to be completed by Lead Agency): On the basis of this initial evaluation: _ I find that the proposed project could not have a significant effect on the environment and the previous Negative Declaration certified for this project by the City of Dublin adequately addresses potential impacts. --L I find that although the proposed project could have a significant effect on the environment, there will not be a significant effect in this case because the mitigation measures described on an attached sheet have been added to the project. A Negative Declaration will be prepared. _ I find that although the proposed project may have a significant effect 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 earlier analysis as described on the attached sheets, if the effect is a "potentially significant impact" or "potentially significant UIÙess mitigated." An Environmental Impact Report is required, but must only analyze the effects that remain to be addressed, ---' I find that although the proposed project could have a significant effect on the environment, there will not be a significant effect in this case because all potentially significant effects (a) have been analyzed adequately in an earlier EIR pursuant to City of Dublin Initial StudylTassajara Road/Fallon Road Ultimate Precise Alignment Page 15 March 2004 Date: For: ~ {(f,(o~ ~ if ð.A.ð~ 48 D-F- aDS' City of Dublin Initial Studyrrassajara Road/Fallon Road Ultimate Precise Alignment Page 16 March 2004 applicable standards, and (b) have been avoided or mitigated pursuant to that earlier ElR, including revisions or mitigation measures that are imposed on the proposed project. Signature: ~~ ~ (J tt Printed Name: I-tf.lt.s S1r ~No.t ( J ~t Ljq of- dO~ Evaluation of Environmental Impacts 1) A brief explanation is required for all answers except "no impact" answers that are adequately supported by the information sources a lead agency cites in the parenthesis following each question. A "no impact" answer is adequately supported if the referenced information sources show that the impact simply does not apply to projects like the one involved (e,g. the project falls outside a fault rupture zone), A "no impact" answer should be explained where it is based on project-specific factors as well as general factors (e.g, the project will not expose sensitive receptors to pollutants, based on a project-specific screening analysis). 2) All answers must take account of the whole action, including off-site as well as on- site, cumulative as well as project-level, indirect as well as direct, and construction as well as operational impacts. 3) "Potentially Significant Impact" is appropriate if there is substantial evidence that an effect is significant. If there are one or more "potentially significant impact" entries when the determination is made, an EIR is required. 4) "Less Than Significant Unless Mitigation Incorporated" implies the incorporation of mitigation measures has reduced an effect from "potentially significant effect" to a "less than significant impact." The lead agency must describe the mitigation measures and briefly explain how they reduce the effect to a less than significant level. City of Dublin Initial Studyffassajara Road/Fallon Road Ultimate Precise Alignment Page 17 March 2004 :=,0 ~-wç Environmental Impacts (Note: Source of determination listed in parenthesis. See listing of sources used to determine each potential impact at the end of the checklist) Note: A full discussion of each item is found following the checklist. 1. Aesthetics. Would the project: a) Have a substantial adverse impact on a scenic vista? (Source: 2,9) b) Substantially damage scenic resources, including but not limited to trees, rock outcroppings, and historic buildings within a state scenic highway? (Source: 2,9) c) Substantially degrade the existing visual character or quality of the site and its surroundings? (Source: 9) d) Create a new source of substantial light or glare which would adversely affect day or nighttime views in the area? (Source: 9, 10) 2. Agricultural Resources Would the project: a) Convert Prime Farmland, Unique Farmland or Farmland of Statewide Importance, as showing on the maps prepared pursuant to the Farmland Mapping and Monitoring Program of the California Resources Agency, to a non-agricultural use? (Source: 2,9) b) Conflict with existing zoning for agriculture use, or a Williamson Act contract? (Source: 2,9) c) Involve other changes in the existing environment which, due to their location or nature, could result in conversion of farmland to a non-agricultural use? (Source: 2,9) 3. Air Quality (Where available, the significance criteria established by the applicable air quality management district may be relied on to make the following determinations). Would the project: a) Conflict with or obstruct implementation of the applicable air quality plan? (Source: 2) b) Violate any air quality standard or contribute substantially to an existing or projected air quality violation? (Source: 2) Potentially Less Than Less than No Significant Significant Significant Impact Impact With Impact Mitigation X X X X X X X X X City of Dublin Initial Studyffassajara Road/Fallon Road Ultimate Precise Alignment Page 18 March 2004 c) 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 (including releasing emissions which exceed quantitative thresholds for ozone precursors? (2) d) Expose sensitive receptors to substantial pollutant concentrations? (Source: 2, 10) e) Create objectionable odors? (Source: 2,9) 4. Biological Resources. Would the project a) Have a substantial adverse effect, either directly 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 Game or the U.S. Fish and Wildlife Service? (Source: 2, 4) b) Have a substantial adverse effect on any riparian habitat or other sensitive natural community identified in local or regional plans, policies or regulations or by the California Department of Fish and Game or the U.S. Fish and Wildlife Service? (Source: 2,4) c) Have a substantial adverse impact on federally protected wetlands as defined by Section 404 of the Clean Water Act (including but not limited to marsh, vernal pool, coastal, etc,) through direct removal, filling, hydrological interruption or other means? (Source: 2, 4) 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? (Source: 2, 4) e) Conflict with any local policies or ordinances protecting biological resources, such as tree protection ordinances? (Source: 2,4) 51 o/J wS Potentially Less Than Less than No Significant Significant Significant Impact Impact With Impact Mitieation X X X X . X X X X Page 19 March 2004 City of Dublin Initial StudylTassajara Road/Fallon Road Ultimate Precise Alignment f) Conflict with the provision of an adopted Habitat Conservation Plan, Natural Community Conservation Plan or other approved local, regional or state habitat conservation plan? (Source: 1) 5. Cultural Resources. Would the project a) Cause a substantial adverse impact in the significance of a historical resource as defined in Sec, 15064.5? (Source: 2, 5) b) Cause a substantial adverse change in the significance of an archeological resource pursuant to Sec. 15064.5 (Source: 2, 5) c) Directly or indirectly destroy a unique paleontological resource or unique geologic feature? (Source: 2,5) d) Disturb any human remains, including those interred outside of a formal cemetery? (Source: 2, 5) 6. Geology and Soils. Would the project a) Expose people or structures to 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 Fault Zoning Map issued by the State Geologist or based on other known evidence of a known fault (Source: 2, 6) ii) Strong seismic ground shaking (2, 6) iii) Seismic-related ground failure, including liquefaction? (2, 6) iv) Landslides? (2, 6) b) Result in substantial soil erosion or the loss of topsoil? (2) 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- and off-site landslide, lateral spreading, subsidence, liquefaction or similar hazards (Source: 2, 6) d) Be located on expansive soil, as defined in Table 13-1-B of the Uniform Building Code (1994), creating substantial risks to life or property? (Source: 2, 6) srz. ùbzOS Potentially Less Than Less than No Significant Significant Significant Impact Impact With Impact Mitigation X X X X X . X X X X X X X City of Dublin Initial StudyfTassajara Road/Fallon Road Ultimate Precise Alignment Page 20 March 2004 e) Have soils capable of adequately supporting the use of septic tanks or alternative wastewater disposal systems where sewers are not available for the disposal of waste? (Source: 7) 7. 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 (Source: 2, 7) b) Create a significant hazard to the public or the environment through reasonably foreseeable upset and accident conditions involving the release of hazardous into the environment? (Source: 2,7) c) Emit hazardous emissions or handle hazardous materials, substances, or waste within one-quarter mile of an existing 'or proposed school? (Source: 2, 7) d) Be located on a site which is included on a list of hazardous materials sites complied pursuant to Government Code Sec, 65962.5 and, as a result, would it create a significant hazard to the public or the environment? (Source: 2, 7) e) For a project located within an airport land use plan or, where such plan has not been adopted, would the project result in a safety hazard for people residing or working in the project area? (Source: 2, 7) f) For a project within the vicinity of private airstrip, would the project result in a safety hazard for people residing or working in the project area? (Source: 2, 7) g) Impair implementation of or physically interfere with the adopted emergency response plan or emergency evacuation plan? (Source: 2, 10) 50 ~?D~ Potentially Less Than Less than No Significant Significant Significant Impact Impact With Impact MitÌ!zation X X X X - X X X X Page 21 March 2004 City of Dublin Initial Studyrrassajara Road/Fallon Road Ultimate Precise Alignment :J tj Db 205* Potentially Less Than Less than No Significant Significant Significant Impact Impact With Impact Mitieation h) Expose people or structures to a significant risk of loss, injury or death involving wildland fires, including where wildlands X are adjacent to urbanized areas or where residences are intermixed with wildlands? (Source: 7) 8. Hydrology and Water Quality. Would the project: a) Violate any water quality standards or waste discharge requirements? (Source: 2,9) X b) Substantially deplete groundwater supplies or interfere substantially with groundwater recharge such that there would be a net deficit in aquifer volume or a lowering of the X local groundwater table level (e.g. the production rate of existing nearby wells would drop to a level which would not support existing land uses or planned uses for which permits have been granted? (Source: 2, 9) c) Substantially alter the existing drainage pattern of the site or area, including through the aeration of the course of a stream or X river, in a manner which would result in substantial erosion or siltation on- or off- site? (Source: 7, 8. 9) d) Substantially alter the existing drainage pattern of the site or areas, including through the alteration of a course or stream or river, X or substantially increase the rate or amount of surfacë runoff in a manner which would result in flooding on- or off-site? (Source: 7, 9) e) Create or contribute runoff water which would exceed the capacity of existing or X planned stormwater drainage systems or provide substantial additional sources of polluted runoff? (Source: 7, 9) f) Otherwise substantially degrade water X quality? (Source: 2) g) Place housing within a 100-year flood hazard area as mapped on a Flood Hazard Boundary X or Flood Insurance Rate Map or other flood delineation map? (Source: 7) City of Dublin Initial Study!Tassajara Road/Fallon Road Ultimate Precise Alignment Page 22 March 2004 h) Place within a 100-year flood hazard area structures which impede or redirect flood flows? (Source: 7) i) Expose people or structures to a significant risk of loss, injury, and death involving flooding, including flooding as a result of the failure of a levee or dam? (2) j) Inundation by seiche, tsunami or mudflow? (2) 9. Land Use and Planning. Would the project: a) Physically divide an established community? (Source: 1, 2, 70) b) Conflict with any applicable land use plan, policy, or regulation of an agency with jurisdiction over the project (including but not limited to the general plan, specific plan, or zoning ordinance) adopted for the purpose of avoiding or mitigating an environmental effect? (Source: 1, 2) c) Conflict with any applicable habitat conservation plan or natural community conservation plan? (1, 2, 7) 10. 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? (Source: 1, 2) 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? (Source: 1, 2) 11. Noise, Would the proposal result in: a) Exposure of persons to or generation of noise levels in excess of standards established in the general plan or noise ordinance, or applicable standards of other agencies? (Source: 2) b) Exposure of persons or to generation of excessive groundbome vibration or groundbome noise levels? (Source: 2, 7) c) A substantial permanent increase in ambient noise levels in the project vicinity above existing levels without the project? (Source: 2,70) 5~ 6b ZCS Potentially Less Than Less than No Significant Significant Significant Impact Impact With Impact Mitigation X X X X X - X X X X X X City of Dublin Initial StudylTassajara Road/Fallon Road Ultimate Precise Alignment Page 23 March 2004 ~'Ú2 Cbws- d) A substantial temporary or periodic increase in ambient noise levels in the project vicinity above levels without the project? (Source:2) 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 expose people residing or working n the project area to excessive noise levels? (Source: 2) f) For a project within the vicinity of a private airstrip, would the project expose people residing or working in the project area to excessive noise levels? (Source: 2) 12. Population and Housing. Would the project a) Induce substantial population growth in an area, either directly or indirectly (for example, through extension of roads or other infrastructure)? (Source: 2, 10) b) Displace substantial numbers of existing housing, necessitating the construction of replacement housing elsewhere? (10) c) Displace substantial numbers of people, necessitating the replacement of housing elsewhere? (Source: 10) 13. Public Services. Would the proposal: a) Would the project result in substantial adverse physical impacts associated with the provision of new or physically altered governmental facilities, the construction of which could cause significant environmental impacts, in order to maintain acceptable service rations, response times or other performance objectives for any of the public services? (Sources: 2,9) Fire protection Police protection Schools Parks Solid waste Potentially Less Than Less than No Significant Significant Significant Impact Impact With Impact Miti!!:ation X X X X X X X X X X X City of Dublin Initial Studyrrassajara Road/Fallon Road Ultimate Precise Alignment Page 24 March 2004 14, Recreation: a) Would the project increase the use of existing neighborhood or regional facilities such that substantial physical deterioration of the facility would occur or be accelerated (Source: 2) b) Does the project include recreational facilities or require the construction or expansion of recreational facilities which might have an adverse physical effect on the environment? (Source: 2) 15, Transportation and Traffic. Would the project: a) Cause an increase in traffic which is substantial in relation to the existing traffic load and capacity of the street system (i.e. result in a substantial increase in either the number of vehicle trips, the volume to capacity ratio on roads or congestion at intersections)? (2, 10) b) Exceed, either individually or cumulatively, a level of service standard established by the County Congestion Management Agency for designated roads or highways? (2) c) Result in a change in air traffic patterns, including either an increase in traffic levels or a change in location that results in substantial safety risks? (10) d) Substantially increase hazards due to a design feature (e.g. sharp curves or dangerous intersections) or incompatible uses, such as farm equipment? (7, 10) e) Result in inadequate emergency access? (10) f) Result in inadequate parking capacity? (7) g) Conflict with adopted policies, plans or programs supporting alternative transportation (such as bus turnouts and bicycle facilities) (1) 5~ 6b 2.DS' Potentially Less Than Less than No Significant Significant Significant Impact Impact With Impact Mitigation X X X . - X X X X X X City of Dublin Initial Studyrrassajara Road/Fallon Road Ultimate Precise Alignment Page 25 March 2004 16. Utilities and Service Systems. Would the project a) Exceed wastewater treatment requirements of the applicable Regional Water Quality Control Board? (2) b) Require or result in the construction of new water or wastewater treatment facilities or expansion of existing facilities, the construction of which could cause significant environmental effects? (2, 10) c) Require or result in the construction of new storm water drainage facilities or expansion of existing facilities, the construction of which could cause significant environmental effects? (8) d) Have sufficient water supplies available to serve the project from existing water entitlements and resources, or are new or expanded entitlements needed? (2, 8) e) 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's projected demand in addition to the providers existing commitments? (8) f) Be served by a landfill with sufficient permitted capacity to accommodate the project's solid waste disposal needs? (2) g) Comply with federal, state and local statutes and regulations related to solid waste? (2) 17. Mandatory Findings of Significance. a) Does the project 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 of 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? 58 CV 2D~ Potentially Less Than Less than No Significant Significant Significant Impact Impact With Impact Mitigation X X X X X X X X City of Dublin Initial StudylTassajara Road/Fallon Road Ultimate Precise Alignment Page 26 March 2004 f:JlJ ðòZDS- Potentially Significant Impact Less Than Significant With Mitigation Less than Significant Impact No Impact b) Does the project 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 past projects, the effects of other current projects and the effects of probable future projects). x c) Does the project have environmental effects which will cause substantial adverse effects on human beings, either directly or indirectly? x Sources used to determine potential environmental impacts 1. Eastern General Plan Amendment/Specific Plan 2. Eastern Dublin General Plan Amendment/Specific Plan EIR 3. Eastern Alameda County General Plan (ECAP) 4 Biological Resources Reconnaissance (LSA Associates) 5, Archeological/Cultural records Search (NWIC) 6. Geotechnical Report for Wallis Ranch (Berlogar) 7. Preliminary Improvement Plans for Proposed Project (City of Dublin) 8. Discussion with City staff or service provider 9, Site Visit 10. Other Source XVII. Earlier Analyses a) Earlier analyses used. Identify earlier analyses and state where they are available for review, Portions of the environmental setting, project impacts and mitigation measures for this IIÚtial Study refer to environmental information contained in the 1992 Eastern Dublin General Plan Amendment and Specific Plan Environmental Impact Report (State Clearinghouse No, 91103064), hereinafter referred to as the Eastern Dublin EIR, The Eastern Dublin EIR is a Program EIR which was prepared for the Eastern Dublin General Plan Amendment and Specific Plan of which this Project is a part, It was certified by the Dublin City Council on May 10, 1993. As part of the certification the Council adopted a Statement of Overriding Considerations for the following impacts: cumulative traffic, extension of certain commuIÚty facilities (natural gas, electric and telephone service), regional air quality, noise and visual, City of Dublin Initial StudyfTassajara Road/Fallon Road Ultimate Precise Alignment Page 27 March 2004 wO ~ ¿os- The Eastern Dublin EIR contains a large number of mitigation measures that apply to this Project and that would be applied to any development within the Project area. Specific mitigation measures identified in the certified Eastern Dublin EIR for potential impacts are referenced in the text of this Initial Study. Pursuant to CEQA Guidelines Section 15162 and 15163, this Initial Study is intended to identify the potential for any new or substantially increased significant impacts on or of the Project that were not evaluated in the Eastern Dublin EIR and that would require additional environmental review. City of Dublin Initial Studyffassajara Road/Fallon Road Ultimate Precise Alignment Page 28 March 2004 lQ \ C5() W 5" Attachment to Initial Study Discussion of Checklist 1. Aesthetics Environmental Setting The project is set in an existing rural area of Eastern Dublin that is transitioning to urban uses under the auspices of the City of Dublin Eastern Dublin Specific Plan and General Plan Amendment, adopted in 1994. The northerly portion of the project area is generally rural, with scattered low density, single-family dwellings on larger lots and agricultural accessory outbuildings. The southerly portion of the project area represents a transition to more urban uses, including the Quarry Lane School, located on the east side of Tassajara Road north of the intersection of Shadow Hill Drive, The existing alignment of Tassajara Road traverses a combination of flatter lands located on the westerly side of the road with rolling hills to the east, in the location of proposed Fallon Road, A number of mature oak trees and other tree species are growing at selected locations adjacent to both sides of the roadway, Passersby can glimpse views of Tassajara Creek and its associated riparian area immediately west of the road. Beyond Tassajara Creek to the west, mid-range to distant views are available of rolling foothills, - Overhead utility lines on poles have been installed along the easterly edge of the road right-of-way, which cross the road for a short section along the west side at one of the curving sections of the road. As a largely undeveloped area, minimal light sources exist within and adjacent to the project area, primarily building and yard lights associated with rural density residential development. The one major source of light within the project area is Quarry Lane School, recent! y constructed, that has a number of building and parking lot lights, Regulatory framework East County Area Plan ŒCAP) The largest portion of the project area lies outside the incorporated City of Dublin within the unincorporated area of Alameda County, although it is within the City's Sphere of Influence, Accordingly, current land uses are governed by the East County Area Plan (ECAP), which contains the following goals and policies relative to Sensitive Viewsheds. Goal: To protect unique visual resources and protect sensitive viewsheds. Policies 105-120: These policies deal with ridgeline protection (including ridgelines of Pleasanton, Main and Sunol west of Pleasanton; ridgelines of Schafer, Shell, Skyline, Oak and Divide ranges west of Dublin; ridgelines above Collier Canyon and Vasco Road and around Brushy Peak in North Livermore; ridgelines above City of Dublin Page 29 Initial Studyn-assajara Road/Fallon Road Ultimate Precise Alignment March 2004 U, 2 ~ 2J),S- vineyards in South Livermore; and ridgelines above Happy Valley south of Pleasanton), limitations on placement of new structures, provision of community separators, protection of mature trees, landscaping provisions, prescriptions on grading and alteration of landforms (refer to ECAP for the complete text of these policies), Alameda County Scenic Route Element In May, 1966, Alameda County adopted a Scenic Route Element of the County General Plan. The Element identifies Tassajara Road as a Major Rural Road. The General Plan Element has been incorporated by reference into the City of Dublin General Plan, The Element contains the following principles that apply to scenic route rights-of-way: · Design scenic routes to minimize grading in rights-of-way; · Design scenic routes for leisurely rather than high speed travel; · Enhance scenic route rights-of-way through outstanding design of highway structures; · Landscape rights-of-way of existing and proposed routes; · Utilize scenic route identification signs, Eastern Dublin Specific Plan / General Plan Amendment The City of Dublin adopted the Eastern Dublin General Plan Amendment/ Specific Plan (EDSP) in 1994 to guide the future development of approximately 7,200 acres of land in the eastern Dublin area. The Specific Plan Amendment/ General Plan includes a number of policies and programs dealing with visual resources, including but not limited to protection of ridgelines and ridgelands, scenic corridors, and hillside development. Key policies dealing with the aesthetic treatment of Tassajara Creek and other stream corridors is as follows Policy 6-39: Tassajara Creek and other stream corridors, shown on Figure 4,1 of the EDSP, 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 sited to maintain visual access to the stream corridors, Program 60: The City should officially adopt Tassajara Road, 1-580 and Fallon Road as designated scenic corridors, adopt a set of scenic corridor policies and establish review procedures and standards for projects within the scenic corridor viewshed, The City of Dublin did adopt the Eastern Dublin Scenic Corridor Policies and Standards document in 1996 to fulfill this measure, Eastern Dublin General Plan Amendment / Specific Plan EIR In 1994, in conjunction with the Eastern Dublin General Plan Amendment and Specific Plan (EDSP), the City of Dublin adopted an Environmental Impact Report (herein City of Dublin Initial Studyrrassajara Road/Fallon Road Ultimate Precise Alignment Page 30 March 2004 ~ 3 t5ò 2DS- referred to as th~ "Eastern Dublin EIR") that, among other CEQA-mandated topics, addressed Visual Resources (Section 3.8), Eastern Dublin EIR Impact 1M3.8/J, Scenic Routes, identifies a potentially significant impact of altering the visual experience of travelers on scenic routes in Eastern Dublin, Formerly quiet rural roads will be transformed into major suburban thoroughfares carrying significant traffic loads, Foreground views of the site as well as distant views of the surrounding Tri-Valley may be partially or completely obstructed, Adherence to the following recommended mitigation measures are recommended in the Eastern Dublin EIR to reduce this impact to a level of insignificance: Mitigation Measure 3.8 18.0: Adherence to Action Program 6Q discussed above, This has already been satisfied by the City of Dublin as noted above, Eastern Dublin EIR Impact 3.8/D identifies potentially significant impacts related to grading and excavation of building sites in hillside areas that would severely compromise the visual quality of the project site, The following measures are included in the Eastern Dublin EIR to reduce potential aesthetic impacts to a level of insignificance: Mitigation Measure 3.8 I 4.0: Visual impacts of extensive grading shall be reduced by sensitive engineering design, by using gradual transitions from graded areas to natural slopes and by revegetation. Mitigation Measure 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. Mitigation Measure 3,8 I 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. Mitigation Measure 3,8 I 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 wherever feasible, Eastern Dublin Scenic Corridor Policies and Standards In 1996, the City of Dublin adopted scenic policies and standards for the Eastern Dublin area, known as the Eastern Dublin Scenic Corridor Policies and Standards. The purpose of this document is to implement EDSP polices as related to individual development projects, The document identifies the Tassajara Creek Valley as a scenic corridor. Applicable policies and standards from this document include: Policy 6: Emphasize valley character by creating viewpoints and view corridors to knolls, foreground hills and to Tassajara Creek. Standard 6.1: Allow intermittent views from Tassajara Road to the hills, knolls and creek. City of Dublin Initial Study/Tassajara Road/Fallon Road Ultimate Precise Alignment Page 31 March 2004 (p y i5b d-OS- Standard 6.2: Where Tassajara Creek's intermittent branch crossed Tassajara Road, maintain views to the creek and riparian vegetation and to the open space to the east. Policy 7: Emphasize the semi-rural character of the area. Standard 7.1: Streetscape should reinforce semi-rural ambience. Project Impacts a) Have a substantial adverse impact on a scenic vista? LS. The Eastern Dublin EIR identifies that implementation of the Eastern Dublin Specific Plan would result in a potentially significant impact (Impact 3.8/1, Development on the project site will alter the character of existing scenic vistas and may obscure important sightlines). Adherence to Mitigation Measure 3,8/7.0 contained in the Eastern Dublin EIR would reduce this impact to a less-than-significant impact. This measure requires the City to complete a visual assessment and guidelines for the eastern Dublin area. The required visual resources survey as required by Mitigation Measure 3.8/7.0 was completed in 1996 and was approved by the City of Dublin as the Eastern Dublin Scenic Corridor Policies and Standards. The proposed project would therefore comply with this Eastern Dublin EIR Mitigation Measure. The proposed road right-of-way project would not re$ult in the construction of substantial new above-ground structures that could block scenic vistas of nearby hills or Tassajara Creek from the existing road. Similarly, no existing designated scenic overlooks would be removed to allow for roadway widening nor would significant amounts of permanent open space identified in the Eastern Dublin Specific Plan be removed or impacted. Therefore, the proposed project would have less-than-significant impacts on scenic vistas, b) Substantially damage scenic resources, including state scenic highway? L5. Although Tassajara Road is identified as a scenic highway in both the Alameda County General Plan and the City of Dublin General Plan, it is not identified as a State Scenic Highway, The Eastern Dublin EIR identifies that implementation of the Eastern Dublin Specific Plan and General Plan Amendment to add new residential, commercial and similar urban uses in the project area would result in a significant and irreversible impact to the portion of Tassajara Road near the northern portion of the project area, Mitigation measures have been included in the Eastern Dublin EIR to minimize hillside grading, although some amount of hillside grading would likely be needed to accommodate proposed road widening, Adherence to Mitigation Measures 3.8/4,0,3,8/4.1,3,8/4.4, and 3.8/4.5 contained in the Eastern Dublin EIR would reduce potential substantial damage to scenic resources by the proposed widened roadway to a less-than- significant level. Fallon Road is not designated as a scenic highway by either the City of Dublin or Alameda County. The proposed project shall to comply with the above referenced Eastern Dublin EIR Mitigation Measures restated below, Page 32 March 2004 City of Dublin Initial Studyrrassajara Road/Fallon Road Ultimate Precise Alignment to S- Dö d DS' Mitigation Measure 1. Visual impacts of extensive grading shall be reduced by sensitive engineering design, by using gradual transitions from graded areas to natural slopes and by revegetation. (Eastern Dublin EIR Mitigation Measure 3.8/4,0) Mitigation Measure 2. 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. (Eastern Dublin EIR Mitigation Measure 3,8/4.1) Mitigation Measure 3. 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. (Eastern Dublin EIR Mitigation Measure 3,8/4.4) Mitigation Measure 4. 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 wherever feasible. (Eastern Dublin EIR Mitigation Measure 3.8/4.5) c) Substantially degrade existing visual character or the quality of the site? LS, The proposed project includes establishing an ultimate future right-of-way to allow the future widening of Tassajara Road and the construction of a portion of Fallon Road, Aesthetic impacts would include additional paving of undeveloped land adjacent to the existing road to create the widened roadway, The Eastern Dublin EIR addressed the following potential impacts related to visual and aesthetics impacts of adopting the Eastern Dublin Specific Plan, which includes the ultimate development of Tassajara Road as a 6-lane roadway and the future construction of Fallon Road for four lanes: Impact 3.8/B: Urban development of the project site will substantially alter the existing rural and open space qualities that characterize Eastern Dublin The Eastern Dublin EIR identified one measure to mitigate this impact (Mitigation Measure 3,8/2,0, "Implement the land use plan for the Project site which emphasizes retention of predominant natural features..,"), however the EIR concludes that even with adherence to this mitigation, alteration of rural and open space in the project area would remain a potentially significant impact, so no additional analysis of this impact is required in this Initial Study, A related impact identified in the Eastern Dublin EIR is Impact 3.81 F, alteration of the visual character of flatlands, Impact 3.8/F: Commercial and residential development of the Project site's flatlands will completely alter the existing visual character resulting from valley grasses and agricultural fields. City of Dublin Initial Studyrrassajara Road/Fallon Road Ultimate Precise Alignment Page 33 March 2004 WW ÖÖ;)D~ A related impact would also be loss of trees adjacent to portions of the road to allow for the proposed widening. This impact is addressed in Section 4, Biological Resources. A third potential visual impact would be grading and recontouring of hillside areas adjacent to the existing roadway which would be required to create a flat roadbed. Grading and recontouring of hillsides adjacent to Tassajara Road and Fallon Road may require the construction of retaining walls. The Eastern Dublin ErR includes the adopted mitigation measures identified and discussed in section "b," above related to grading and recontouring of property in Eastern Dublin. Adherence to the above mitigation measures as discussed in item lib" will reduce grading and related aesthetic impacts to adjacent hillside areas associated with the roadway widening to a less-than-sígnificant level. Retaining walls near the widened roadway would likely require innovative design and engineering solutions to comply with adopted mitigation measures for reduction of potential visual impacts. No other impacts to scenic vistas are anticipated, since the project proposes no construction of above-ground structures, Existing overhead utility lines adjacent to Tassajara Road would be undergrounded as the road is widened which would result in a positive impact on local scenic qualities. Future utilities adjacent to Fallon Road would be undergrounded as part of project construction, The ultimate project will include a landscaped center meçiian as well as landscaping within the right-of-way along the frontage of the adjoining properties; the landscaping will be installed in phases dependent on the development of adjoining property, The design of future private streetscape plantings will be reviewed and approved by the City of Dublin to ensure that scenic qualities are maintained, Overall, with adherence to applicable eastern Dublin ErR Mitigation Measures as discussed above, project impacts on existing scenic qualities and vistas would be less-than-sígnificant, d) Create light or glare? LS / M, A number of light sources present! y exist within the project area and construction of the proposed project would add additional light sources in the form of streetlights along the widened road. Since properties adjacent to the project area are primarily rural, new light sources associated with the project could be a potentially significant impact. Adherence to the following measure will reduce light and glare impacts to a less-than-sígnificant level: Mitigation Measure 5. Street lights installed as part of the road widening plan shall be equipped with cut-off lenses to prevent spill over of light beyond the roadway. Lighting levels shall be limited to the minimum level of illumination needs for safety purposes, City of Dublin Initial StudyfTassajara Road/Fallon Road Ultimate Precise Alignment Page 34 March 2004 Co -¡ ÖÖ dOS' 2. Agricultural Resources Environmental Setting The Eastern Dublin General Plan EIR identifies lands immediately east of Tassajara Road as "lands of locally important farmlands," and larger parcels adjacent to Tassajara Road, such as the Lin property (west of Tassajara Creek) and the Silveria property (east of Tassajara Road) have been used for cattle grazing and likely dry crop farming for a number of years. Project Impacts a,c) Convert prime farmland to a non-agricultural use or involve other changes which could result in conversion of farmland to a non-agricultural use? LS. Implementation of the proposed project would convert a small portion of locally important farmland along the east side of the existing right-of-way to a public thoroughfare. Impact 3.1/D within the Eastern Dublin EIR identifies loss of farmland of local importance as an insignificant impact, since none of the lands found within the Eastern Dublin EIR project area are considered prime agricultural soils, Conversion of prime farmlands is therefore considered to be less-than-significant level. b) Conflict with existing zoning for agricultural use, or a Williamson Act contract? LS. One property immediately east of Tassajara Road, the Moller property, is presently encumbered with a Williamson Act Agreement. Proposed future widening of Tassajara Road would encroach onto this property, however, the amount of property converted to roadway and appurtenances would be minor and less-than-significant. Although presently unincorporated properties adjacent to Tassajara Road are zoned" Agriculture" by Alameda County, the Agriculture zoning district would allow construction of a public road, 3. Air Quality Environmental Setting The project is within the Amador V alley, a part of the Livennore sub-regional air basin distinct from the larger San Francisco Bay Area Air Basin, The Livennore sub-air basin is surrounded on all sides by high hills or mountains. Significant breaks in the hills surrounding the air basin are Niles Canyon and the San Ramon Valley, which extends northward into Contra Costa County. The terrain of the Amador Valley influences both the climate and air pollution potential of the sub-regional air basin, As an inland, protected valley, the area has generally lighter winds and a higher frequency of calm conditions when compared to the greater Bay Area, The occurrence of episodes of high atmospheric stability, known as inversion conditions, severely limits the ability of the atmosphere to disperse pollutants vertically. Inversions can be found during all seasons in the Bay Area, but are particularly City of Dublin Initial StudyfTassajara Road/Fallon Road Ultimate Precise Alignment Page 35 March 2004 !ß8 ~dr5~ prevalent in the summer months when they are present about 90% of the time in both morning and afternoon, According to the Bay Area Air Quality Management District, air pollution potential is high in the Livermore-Amador Valley, especially for ozone in the summer and fall. High temperatures increase the potential for ozone, and the valley not only traps locally generated pollutants but can be the receptor of ozone and ozone precursors from upwind portions of the greater Bay Area. Transport of pollutants also occurs between the Livermore Valley and the San Joaquin Valley to the east. During the winter, the sheltering effect of terrain and its inland location results in frequent surface-based inversions. Under these conditions pollutants such as carbon monoxide from automobiles and particulate matter generated by fireplaces and agricultural burning can become concentrated. Ambient air quality standards Both the U. S. Environmental Protection Agency and the California Air Resources Board have established ambient air quality standards for common pollutants. These ambient air quality standards are levels of contaminants which represent safe levels that avoid specific adverse health effects associated with each pollutant. The ambient air quality standards cover what are called "criteria" pollutants because the health and other effects of each pollutant are described in criteria documents, The federal and California ambient air quality standards are summarized in Table 1 for important pollutants, The federal and state ambient standards were developed independently with differing purposes and methods, although both federal and state standards are intended to avoid health-related effects, As a result, the federal and state standards differ in some cases. In general, the California state standards are more stringent. This is particularly true for ozone and PM 10. Table 1. Federal and State Ambient Air Quality Standards Pollutant Averaging Federal State Time Primary Standard Standard Ozone I-Hour 0,12 PPM 0.09 PPM 8- Hour 0,08 PPM -- Carbon Monoxide 8- Hour 9PPM 9,0 PPM I-Hour 35 PPM 20,0 PPM Nitrogen Dioxide Annual Average 0.05 PPM -- I-Hour -- 0,25 PPM Sulfur Dioxide Annual Average 0.03 PPM -- 24-Hour 0.14 PPM 0.05 PPM I-Hour - 0.25 PPM City of Dublin Initial StudyfTassajara Road/Fallon Road Ultimate Precise Alignment Page 36 March 2004 to CJ ð2J 20S PM10 Annual Average 24-Hour 50 ug/m3 150 u 1m3 30 ug/m3 50 u 1m3 PM2.5 Annual 24-Hour 15 ug/m3 65 ug/m3 PPM = Parts per Million -$/m3 = Micrograms per Cubic Meter Source: Bay Area Air Quality Management District The V,S, Environmental Protection Agency in 1997 adopted new national air quality standards for ground-level ozone and for fine Particulate Matter. The existing I-hour ozone standard of 0.12 PPM will be phased out and replaced by an 8-hour standard of 0.08 PPM. New national standards for fine Particulate Matter (diameter 2.5 microns or less) have also been established for 24-hour and annual averaging periods, The current PMlO standards were retained, but the method and form for determining compliance with the standards were revised. Implementation of the new ozone and Particulate Matter standards has been complicated by a lawsuit. On May 14, 1999, the Court of Appeals for the District of Columbia Circuit issued a decision ruling that the Clean Air Act as applied in setting the new public health standards for ozone and particulate matter, was unconstitutional as an improper delegation of legislative authority to the Envíronmental Protection Agency, The decision has been appealed, but the legal status of the new standards will probably remain uncertain for some time. Ambient air quality The project is within the nine-county Bay Area Air Basin, The Bay Area Air Quality Management District (BAAQ11D) operates a network of air quality monitoring sites in the region, including one in central Livermore on Old First Street. Table 2 shows a summary of air quality data for this monitoring site for the period 1995-1999. Data are shown for ozone, carbon monoxide, PM10 and nitrogen dioxide, The number of days exceeding each standard are shown for each year, City of Dublin Initial Studyffassajara Road/Fallon Road Ultimate Precise Alignment Page 37 March 2004 7() r5b ?D~ Table 2, Air Quality Data for Livermore, 1995-1999 Pollutant Standard Days Exceeding Standard In: 1995 1996 1997 1998 1999 Ozone Federal I-Hour 7 8 0 6 2 Ozone State I-Hour 20 22 3 21 14 Ozone Federal 8- Hour 11 10 0 10 5 Carbon State/Federal 0 0 0 0 0 Monoxide 8- Hour PM10 State 24-Hour 6 6 12 12 18 PM 10 Federal 24-Hour1 0 0 0 0 0 Nitrogen State I-Hour 0 0 0 0 0 Dioxide Source: Air Resources Board Aerometric Data Analysis and Management System (ADAM) Table 2 shows that concentrations of carbon monoxide and nitrogen dioxide at the Livennore monitoring site meet State/Federal standards, Ozone concentrations exceed both the State and Federal standards, and exhibit wide variations from year-to-year related to meteorological conditions in the Tri-Valley area. Years where the summer months tend to be warmer than average tend to have higher average ozone concentrations while years with cooler than average temperatures tend to have lower average ozone concentrations, Levels of PMlO at Livermore meet the Federal ambient standards, but exceed the more stringent State standard. Attainment status The federal Clean Air Act and the California Oean Air Act of 1988 require that the State Air Resources Board, based on air quality monitoring data, designate air basins within the state where the Federal or State ambient air quality standards are not met as "nonattainment areas." Because of the differences between the Federal and State standards, the designation of nonattainment areas is different under the Federal and State legislation, The Bay Area is currently a nonattainment area for the Federal I-hour ozone standard, Under the California Clean Air Act, the Bay Area is a nonattainment area for ozone and PM10' To meet Federal Clean Air Act requirements, the District has adopted an Ozone Attainment Demonstration Plan. In addition, to meet California Clean Air Act requirements, the District has also adopted and updated a Clean Air Plan addressing City of Dublin Initial StudylTassajara Road/Fallon Road Ultimate Precise Alignment Page 38 March 2004 1l C5Q ';)DS-- the California ozone standard, The control strategy contained in these plans include new limits on emissions from industry, prohibitions on sources of hydrocarbons, regional transit and HOV programs, buy-back programs for older vehicles, and educational programs, The California Legislature, when it passed the California Clean Air Act in 1988, recognized the relative intractability of the PMlO problem with respect to the state ambient standard and excluded it from the basic planning requirements of the Act. The Act did require the CARB to prepare a report to the Legislature regarding the prospect of achieving the State ambient air quality standard for PMlO' This report recommended a menu of actions, but did not recommend imposing a planning process similar to that for ozone or other pollutants for achievement of the standard within a certain period of time, Sensitive Receptors The Bay Area Air Quality Management District defines sensitive receptors as facilities where sensitive receptor population groups (children, the elderly, the acutely ill and the chronically ill) are likely to located. These land uses include residences, schools playgrounds, child-care centers, retirement homes, convalescent homes, hospitals and medical clinics. One such sensitive receptor in the project vicinity is the Quarry Lane School, a private K-12 school, located on the east side of Tassajara Road. The school is in the process of expanding its campus. Project Impacts a) Would the project conflict or obstruct implementation of an air quality plan? NI, The proposed project would not conflict with the local Clean Air Plan adopted by the Bay Area Air Quality Management District, since no habitable development is proposed to occur that would generate either additional auto trips or land uses that would result in a greater number of automobile trips. The two roads (Tassajara Road and Fallon Road) have been included in the Eastern Dublin Specific Plan and General Plan Amendment and associated air quality impacts have been addressed in Section 3,11 of the Eastern Dublin EIR, certified in 1993. Air quality impacts addressed in that EIR included Impact 3,111 C (Mobile sources of Reactive Organic Gasses (ROG) and Nitrogen Oxide (NOX)) and Impact 3,11/D (Impact of carbon monoxide), The Eastern Dublin EIR concluded that impacts related to ROG and NOX could not be mitigated to a less-than- significant level and would remain a significant impact, This impact was included in the City of Dublin's Statement of Overriding Considerations in adopting the Eastern Dublin EIR. No additional analysis of this issue is therefore required. If this project were to be approved, a Statement of Overriding Considerations would need to be adopted by the City of Dublin. b) Would the project violate any air quality standards? LS, Air quality impacts of buildout of the Eastern Dublin Specific Plan were addressed in the Eastern Dublin EIR. Specifically, Impact 3.111 A assessed dust generated by construction activities, Impact3.11/B addressed vehicle emissions from construction vehicles, Impact 3.11 1 C dealt with Reactive Organic Gas and Nitrogen Oxide emission and Impact 3.11/D addressed carbon monoxide emission from new project-related traffic, City of Dublin Initial StudyfTassajara Road/Fallon Road Ultimate Precise Alignment Page 39 March 2004 7;}- Vd-OS' The Eastern Dublin ErR identified the following mitigation measures to reduce potentially significant air quality impacts to a less-than-significant level. These mitigations also apply to this proposed project. Mitigation Measure 6, Future precise road improvement plans and specifications shall include comprehensive dust control measures for all construction projects, including but not limited to watering of construction sites, daily clean up of dust and mud, revegetation of graded areas and similar steps. (EDSP ErR :Mitigation Measure 3,11/1,0) Mitigation Measures 7. Future precise road improvement plans and specifications shall include scheduling of construction of activities during non- peak traffic times, installation of emission controls on construction vehicles and similar steps, (EDSP EIR Mitigation Measures 3,11 / 2.0-4,0) With adherence to mitigation measures contained in the Eastern Dublin EIR, impacts related to air quality standards would be less-than-significant. c) Would the project result in cumulatively considerable air pollutants? NI. The proposed project would not generate additional automobile trips or land uses that would induce additional auto trips within Dublin that have not already been analyzed in the Eastern Dublin ErR. The project would also not involve any manufacturing or processing that would generate air pollutants, No impacts are therefore anticipated. d,e) Expose sensitive receptors to significant pollutant concentrations or create objectionable odors? LS. One school (Quarry Lane School) and limited, low-density residential uses have been constructed adjacent to Tassajara Road, No other sensitive receptors exist in the immediate vicinity. Future levels of air pollutants in the project vicinity have been addressed in the Eastern Dublin EIR, which will be less- than-significant, Since the proposed project does not include manufacturing uses, no objectionable odors would be created. 4. Biological Resources (Note: the following section is largely based on a biological reconnaissance of the project site by LSA Associates, which is attached to this Initial Study.) Environmental Setting Large portions of the Tassajara Road widening project site were graded over 30 years ago for the existing Tassajara Road roadway, Grading included removing material from high ground areas to lower them and the placement of fill in low areas forming a relatively level strip of roadway that was paved to a width of approximately 25 feet. The portions of the right-of-way that are graded, but not paved, as well as the adjacent ungraded portions of the site, have been disturbed by road construction and maintenance, livestock grazing, and the placement of spoils material. These City of Dublin Initial StudyfTassajara Road/Fallon Road Ultimate Precise Alignment Page 40 March 2004 7~ 00 :;;05 undeveloped areas support, for the most part, ruderal and non-native grassland plant species Vegetation and habitats Vegetation in the portions of the road widening area that have not previously been disturbed is a mix of ruderal and non-native grassland, Two tributaries to Tassajara Creek cross the road widening project area and contain riparian vegetation, Non-native grassland and ruderal plant communities. The project site passes through several privately held parcels of land, each showing varying degrees of disturbance. Most of the lands on these parcels have been fenced to contain livestock. The fencing is in various stages of decay, removal, or replacement. Grazing intensity varies from heavy to light. The historic grazing on these lands has fostered the removal of native grasses and forbs that have been replaced by introduced annual grasses and introduced annual forbs. The majority of the undeveloped portions of the project area are dominated by introduced annual grass species including wild oats (Avena sp), ripgut brome (Bromus diandrus), and foxtail barley (Hordeum murinum), A number of ruderal introduced weed species, such as yellow-star thistle (Centaurea solstitialis), Russian thistle (Salsola tragus) and bindweed (Convolvulus arvensis), are also present in this vegetation type, The proportion of ruderal plants to non-native grasses in the activity area appeared to be evenly divided. Along both sides of the existing roadbed area, there is a small strip of land located between the paved roadway and the fenced private lands, Ibis strip was originally disturbed during road grading and includes areas that were cut or filled to level the roadway, This strip appears to be fallow although there was evidence that it is occasionally sprayed to control weeds, The original and continued disturbance, combined with the exclusion of livestock, has again favored weedy species of non- native grasses and ruderal vegetation, Tall ruderal species such as Italian thistle (Carduus pycnocephalus) and black mustard (Brassica nigra) dominated the vegetation in this strip, The lack of grazing has also permitted several trees such as valley oak (Quercus lobata) and almond (Prunus dulcis) to establish, Many of these trees are located immediately adjacent to the existing roadway, One portion of private land in the project area on the west side of Tassajara Road has been used to stockpile spoils material, The elevation of this site has been raised two to four feet and the spoils material has covered the original vegetation growing on the site. Ruderal plant species similar to those mentioned above dominate this site. Riparian habitats. Two tributaries to Tassajara Creek cross the project site. The northern most tributary is located approximately a quarter of a mile south of the Contra Costal Alameda county line. The upstream portion of this tributary, east of Tassajara Road, has been slightly downcut so that the banks are steeply rounded and approximately 10 feet high, Valley oaks and willows (Salix sp.) grow along the banks and at the edge of the channel, which was dry at the time of the site visit. The tributary enters a culvert to cross under Tassajara Road, The portion of the tributary downstream of (to the west of) the road has been severely eroded and has become deeply incised, Banks in this area are very steep extending 20 to 30 feet above the channel bottom, A City of Dublin Initial StudyfTassajara Road/Fallon Road Ultimate Precise Alignment Page 41 March 2004 74 00 ;)-~ few small willows were observed growing around a small earthen pool in the channel bottom, otherwise the banks are largely barren. The southern most tributary was also dry, but densely vegetated with riparian tree species, Trees observed included numerous valley oak, willows, and cottonwood (Populus fremontii). Tassajara Road is elevated over the creek which flows beneath the road in a culvert. Wildlife values. Wildlife associated with the Tassajara Road project site are species such as ground squirrel (Spermophilus beecheyi), black-tailed hare (Lepus californicus) and morning dove (Zenaida macroura) adapted to dry grassland conditions and generalist species such as Brewer's blackbird (Euphagus cyanocephalus), coyote (Canis latrans), western fence lizard (Sceloporus occidentalis), and racoon (Procyon [otor), that can use a variety of habitat types including disturbed grassland and ruderal areas. A nest typical of those constructed by a small raptor was observed in one of the valley oaks along the existing roadway. No other stick nests were observed. Several raptor species are likely to perch in the on-site or adjacent trees, A red-tailed hawk (Buteo jamaicensis) nest is present just outside the project area to the west in a eucalyptus. Many species of raptor forage over the site. Aquatic and semi-aquatic species such as mosquito fish (Gambusia affinis), California roach (Lavinia symmetricus), and western pond turtle (Clemmys marmorata), are likely to occur in and along the tributaries to Tassajara Creek when apd where water is present. Many species will use riparian corridors as movement corridors Sensitive habitats The California Natural Diversity Data Base (CNDDB) reports seven sensitive habitats in the general Dublin/Livennore area; alkali meadow, alkali seep, cis-montane alkali marsh, sycamore alluvial woodland, valley needlegrass grassland, and valley sink scrub. None of these sensitive habitats occur within the Tassajara Road area. The parcel of land located west of Tassajara Road and immediately north of the southern most tributary (Wallis Ranch) may support plants similar to those in alkali meadows. The portions of the parcel in the project site do not meet the criteria for this vegetation type. None of the other habitats have been reported from or were observed nearby, The tw'o tributaries to Tassajara Creek that cross the project area appear to meet the definition of jurisdictional waters of the United States, No other potential waters or wetlands were observed on the project site. The approximate jurisdictional area is 9,000 square feet (0,21 acres), all of which is located in the two tributaries. Plant Species. Table 3 presents a list of nineteen special-status plant species considered potentially occurring in the Livennore/ Amador Valley vicinity, Fifteen of the species on this list were eliminated from consideration because the necessary habitats that support them were absent from the project area (Tibor, 2000). Possible habitat for caper- fruited tropidocarpum is present. However, the extent of habitat disturbance on the project site, and the fact that this species is considered extinct, make its presence so unlikely that it has also been eliminated from consideration, City of Dublin Initial Studyrrassajara Road/Fallon Road Ultimate Precise Alignment Page 42 March 2004 70v ¿O~. Habitats in the Tassajara Road project site are suitable for big tarplant, San Joaquin spearscale and Congdon's tarplant. The ruderal/ non-native grassland located in the undeveloped portions of the site would be considered marginal habitat for these three species, These species were identifiable at the time of the surveys and big tarplant and San Joaquin spearscale were not observed. These two species should be considered unlikely to occur on the site. Congdon's tarplant was observed on the site in a heavily grazed field on the west side of Tassajara Road, just north of the southernmost tributary to Tassajara Creek (Wallis Ranch), Several additional populations were observed in the same field outside of the project area, A small number of Congdon's tarplants (5 or 6) were also observed on the east side of the project at the Silveria Ranch Property. Wildlife Species Table 4 presents a list of nineteen special-status wildlife species considered to potentially occur in the Livermore/ Amador Valley. Twelve of the species on the list were eliminated from consideration because suitable habitat for them is not present on the site. California homed lark was considered but eliminated as well. California homed lark will nest in short-grass grasslands similar to those present within the road widening project area, but prefer undisturbed sites with greater amounts of suitable habitat present. The project site grasslands are located within several yards of Tassajara Road and California homed larks are also unlikely to nest this close to the road. California tiger salamanders live in rodent burrows or other retreat sites located in grassland habitats. They breed in seasonal ponds and vernal pools. The grasslands within the project boundaries represents suitable habitat for_adult California tiger salamanders and burrows suitable for use by this species were observed in several locations along the project alignment. The species is known to breed in ponds in this area of East Dublin, California tiger salamander may live in burrows located in the grasslands along the road corridor or cross the project site while migrating, California red-legged frog and western pond turtle occur in creek habitats similar to those present in the tributaries to Tassajara Creek. Both species have been observed in Tassajara Creek immediately west of the road corridor and California red-legged frog has been reported from upstream locations in both of the two tributaries that cross the project site, The presence of the roadway, and its associated traffic, within the project right of way severely reduces the suitability of the upland communities as potential upland habitat, nesting habitat, or migration corridors for these two species. California red-legged frog and western pond turtle are likely to use or occupy the sections of the tributaries to Tassajara Creek within the Tassajara Road Widening project site. San Francisco dusky-footed woodrats build stick nests in scrub and forest communities including riparian forests, The dense riparian vegetation located along the southern tributary to Tassajara Creek appears suitable for the San Francisco dusky-footed woodrat. No woodrat nests were observed in the southern tributary riparian vegetation during our site visits. The species is unlikely to be effected by the Tassajara Road Widening project. Suitable nesting habitat is present for white-tailed kite and other nesting raptors. One nest typical of those constructed by smaller sized raptors, such as a kite, was observed City of Dublin Initial StudyfTassajara Road/Fallon Road Ultimate Precise Alignment Page 43 March 2004 llJ¿ f5Q 2f)5" in one of the taller trees along the existing roadway. White-táiled kite or other species of raptorcould nest within the project area. Western burrowing owls forage in grassland and ruderal habitats like those along the road widening project area, This species occupies ground squirrel burrows in these habitats, Numerous ground squirrel burrows suitable for use by burrowing owl were observed within the road corridor. These burrows provide suitable habitat for burrowing owl and the presence of this species cannot be ruled out. Bats including pallid bat and Townsend's big-eared bat are known to roost under bridges and in large culverts, The southern tributary culvert may provide suitable habitat for colonies of roosting bats. Several surveys for San Joaquin kit fox have been conducted in the project area. No kit fox or sign of kit fox presence has been detected during these surveys and there are no verified incidental observations of kit fox from the East Dublin area. The likelihood of their presence within the road corridor is very low, The U.S, Fish and Wildlife Service considers the location of the road corridor to be suitable kit fox habitat and potentially occupied by the species, Regulatory framework Federal Endangered Species Act. The federal Endangered Species Act (FESA) protects listed species from harm or a "take" which is broadly defined as to harass, harm, pursue, hunt, shoot, wound, kill, trap, capture, collect, or attempt to engage in any such conduct, Take can also include habitat modification or degradation that results in death or injury to a listed species. An activity can be defined as take even if it is unintentional or accidental. Listed plant species are provided less protection than listed wildlife species, Listed plant species are legally protected from take under FESA if they occur on federal lands or if the project requires a federal action, such as a wetland fill permit. The D,S. Fish and Wildlife Service (USFWS) has jurisdiction over federally-listed threatened and endangered species under the FESA, The USFWS also maintains lists of proposed and candidate species that are not legally protected under the FESA, but which may become listed in the near future and are often included in their review of a project, California Endangered Species Act. The California Endangered Species Act (CESA) prohibits the take of any plant or animal listed or proposed for listing as rare (plants only), threatened, or endangered, In accordance with the CESA, California Department of Fish and Game (CDFG) has jurisdiction over state-listed species (California Fish and Game Code 2070). Additionally, the CDFG maintains lists of "species of special concern" that are defined as species that appear to be vulnerable to extinction because of declining populations, limited ranges, and/ or continuing threats, California Environmental Ouality Act. Section 15380(b) of the California Environmental Quality Act (CEQA) Guidelines provides that a species not listed on the federal or state lists of protected species may be considered rare or endangered if the species can be shown to meet certain specified criteria. These criteria have been modeled after the definitions in FESA and CESA and the section of the California Fish and Game Code City of Dublin Initial StudylTassajara Road/Fallon Road Ultimate Precise Alignment Page 44 March 2004 17 OO'iWS- dealing with ràre or endangered plants or animals. This section was included in the guidelines primarily to deal with situations in which a p.ublic agency is reviewing a project that may have a significant effect on a species that has not yet been listed by either the USFWS or CDFG. Clean Water Act, Under Section 404 of the Clean Water Act, the u,s. Army Corps of Engineers (Corps) is responsible for regulating the discharge of fill material into waters of the United States. Waters of the U.s, and their lateral limits are defined in 33 CFR Part 328.3 (a) and include streams that are tributary to navigable waters and their adjacent wetlands, Wetlands that are not adjacent to waters of the U.S, are termed "isolated wetlands" and, depending on the circumstances, may also be subject to Corps jurisdiction, In general, a Corps permit must be obtained before placing fill in wetlands or other waters of the u.s. The type of permit depends on the acreage involved and the purpose of the proposed fill, Minor amounts of fill can be covered by a Nationwide Permit. An Individual Permit is required for projects that result in more than a "minimal" impact on jurisdictional areas. Individual Permits require evidence that jurisdictional fill has been avoided to the extent possible and a review of the project by the public, California Water Ouality and Waterbody Regulatory Programs. Pursuant to Section 401 of the federal Clean Water Act, projects that are regulated by the Corps must obtain water quality certification from the Regional Water Quality Control Board (RWQCB), This certification ensures that the project will uphold state vyater quality standards. The RWQCB may impose mitigation requirements even if the Corps does not, The CDFG exerts jurisdiction over the bed and banks of watercourses and water bodies according to provisions of Section 1601 to 1603 of the Fish and Game Code. The Fish and Game Code requires a Streambed Alteration Permit for the fill or removal of material within the bed and banks of a watercourse or waterbody. Other Statutes, Codes, and Policies. The federal Migratory Bird Treaty Act (16 U,S.c., Sec. 703, Supp. I, 1989) prohibits killing, possessing, or trading in migratory birds except in accordance with regulations prescribed by the Secretary of the Interior, This act encompasses whole birds, parts of birds, and bird nests and eggs, Most native bird species on the project site are covered by this Act, The California Native Plant Society (CNPS), a non-governmental conservation organization, has developed lists of special status plant species of concern in California (Tibor 2001), Vascular plants included on these lists are defined as follows: List 3 List 4 Plants considered extinct, Plants rare, threatened, or endangered in California and elsewhere, Plants rare, threatened, or endangered in California but more common elsewhere, Plants about which more information is needed - review list. Plants of limited distribution - watch list. List 1A List 1B List 2 City of Dublin Initial StudyfTassajara Road/Fallon Road Ultimate Precise Alignment Page 45 March 2004 r;,g ùQ 7-0S Although the CNPS is not a regulatory agency and plants on-these lists have no fonnal regulatory protection, plants appearing on List IB or List 2 are, in general, considered to meet CEQA's Section 15380 criteria and adverse effects to these species are considered " significant." Eastern Dublin General Plan Amendment/Specific Plan EIR. The City's Eastern Dublin General Plan Amendment I Specific Plan identifies a number of impacts related to the adoption and implementation of the Eastern Dublin General Plan Amendment and Specific Plan. These include: Impact 3.7 I A: Direct Habitat Loss, including loss, degradation or disturbance of up to 3,700 acres of existing vegetation, which will reduce the habitat and range for botanical and wildlife species on the site or which migrate through the site. Impact 3,7 I B: Indirect Loss of Vegetation Removal, including increased soil and erosion and sedimentation, slope failure potential and alteration of drainage patterns, Impact 3,7 I C: Loss or Degradation of Botanically Sensitive Habitat area, Impacts 3.7/D-I: Impacts to San Joaquin Kit Fox, Bald eagle, peregrine falcon and Alameda whip snake, red-legged frog, California tiger salamander, western pond turtle, tri-colored blackbird, Impacts 3,7/J-L: Impacts To Golden Eagle. Impacts 3/7 IM-S: Impacts to burrowing owl, American badger, prairie falcon, southern harrier, black-shouldered kite, sharp-shinned hawk, Cooper's hawk, short-eared owl, California homed lizard and special-status invertebrates. The Eastern Dublin EIR also includes a wide range of mitigation measures to reduce impacts of the project on biological resources to a less of less-than-significance. The Eastern Dublin Comprehensive Stream Restoration Program was adopted by the City of Dublin in 1996 as an implementation program required by the Eastern Dublin General Plan Amendment and Specific Plan. The purpose of this document is to provide more detailed requirements relating to hydrologic and biological conditions for individual development projects proposed adjacent to Tassajara Creek, specifically to ensure that Tassajara Creek restoration policies and programs are fully implemented, Project Impacts a) Have a substantial adverse impact on a candidate, sensitive, or special-status species? LS/M, The proposed widening of Tassajara Road would result in loss of approximately 10.5 acres of non-native ruderal and grassland plant communities. These communities occur on the site as the result of historical disturbance and livestock grazing that allowed introduced non-native plants to colonize and displace the native plant species that existed here. These non-native habitats are presently common throughout the State of California, The loss of non-native City of Dublin Initial Studyrrassajara Road/Fallon Road Ultimate Precise Alignment Page 46 March 2004 /}q 50 2D~ grassland as a community in the East Dublin area would be considered less-than- significant. The proposed roadway widening project could result in potentially significant impacts to populations of the following sensitive animal species: San Joaquin kit fox, California tiger salamander, California red-legged frog, western pond turtle, roosting bats, burrowing owl, and raptors nesting in trees on and adjacent to the project site. Potentially significant impacts could also result to Congdon's tarplant, a special-status plant species These potential impacts will require mitigation to reduce their level to a less-than-significant level as identified below. Burrowing owL California tiger salamander and San Joaquin kit fox impacts: The project would result in the removal of approximately 10.5 acres of grassland habitat for western burrowing owl, California tiger salamander and San Joaquin kit fox. Construction activity could result the removal or disturbance of occupied burrows. Adherence to the following two mitigation measures will reduce this impact to a less-than-significant level: Mitigation Measure 8. Pre-construction surveys to determine if western burrowing owl, are present within the area of disturbance of the road widening should be conducted by a qualified biologist no more than 30 days prior to the initiation of any construction related activities. If burrowing owls are observed on or near the project site during these surveys, the project will implement an exclusion zone around the nest location, Exclusion zones should be 160 feet during the non-breeding season of September 1-January 31. Passive relocation of owls that includes the placement of one-way doors over burrow entrances, allowing owls to exit but not return, may be used at that time, During the breeding season of February 1-August 31, exclusion zones should be at least 250 feet from occupied burrows. All project related activity will occur outside of the exclusion area until the young have fledged (California Department of Fish and Game, 1995). If owls are detected breeding within the construction zone, 6.5 acres of burrowing owl habitat shall be preserved for each active nest detected. The location of the preserved habitat shall be determined in consultation with the CDFG, To the fullest extent possible, mitigation areas shall be located on the adjoining property where owl habitat is identified, Mitigation Measure 9. Surveys to determine if California tiger salamander are present wi thin the area of disturbance of the road widening should be conducted by a qualified biologist. These surveys should be conducted in accordance with the protocols outlined by the CDFG, If California tiger salamanders are determined to be present, the project will implement a salvage program, The salvage program will include placement of fencing to prevent movement of salamanders into the project site and trapping in the project area to capture salamanders for relocation to off-site locations by a qualified biologist who possesses necessary collection permits an such collection is done in conformance with methods described in the City of Dublin Initial StudyfTassajara Road/Fallon Road Ultimate Precise Alignment Page 47 March 2004 '80 ÖQ -WS. USFWS/DFG Interim Guidance on Conducting Site Assessments and Field Surveys for Determining Presence of the California Tiger Salamander. The project shall replace California tiger salamander habitat at a 1:1 (mitigation area: impact area) replacement ratio. All replacement mitigation acreage must be protected in perpetuity by designation as permanent open space with a conservation easement placed over it. The location of the preserved habitat will require the approval of the CDFG. CDFG approved mitigation habitat must be secured prior to construction of the road widening, To the fullest extent possible, mitigation areas shall be located on the adjoining property where tiger salamander habitat is identified. Mitigation Measure 10. Pre construction surveys for the presence of San Joaquin kit fox shall be completed as required by the Eastern Dublin Specific Plan EIR. If San Joaquin kit fox are observed on or near the project site during these surveys, consultation with the U.s. Fish and Wildlife Service will be initiated and the project will incorporate the Terms and Conditions contained in the Biological Opinion. Mitigation Measures 3,7 118,0 through 19.0 as set forth in the Eastern Dublin EIR shall also be implemented, A summary of the Mitigation Measures identified in Mitigation Measure 10 includes: Eastern Dublin EIR Mitigation Measure 3.7 118,0: A United States Fish and Wildlife Service Section 7 Consultation may be reqµired regarding kit fox, Eastern Dublin EIR Mitigation Measure 3.7/18,1: The City of Dublin shall work with other agencies to develop a management plan that identifies measures to protect viable habitat for kit fox in the Tri- Valley area, Eastern Dublin EIR Mitigation Measure 3,7/19,0: Limitations on use of herbicides and pesticides within the Eastern Dublin project area to minimize impacts on wildlife, Impact to California red-legged frog and western pond turtle: Culvert removal and bridge construction over the two tributaries could result in the removal or disturbance of California red-legged frog and western pond turtle living within the construction area, These impacts will require the Corps of Engineers to enter into a Section 7 Endangered Species Act consultation with the USFWS as part of the Corps permit process. Adherence to Mitigation Measure 11 will mitigate for impacts to aquatic habitats for California red-legged frog and western pond turtle, The replacement of the existing culverts with bridges will increase red-legged frog habitat and pond turtle habitat and remove barriers to their movement. Adherence to Mitigation Measure 11 will reduce potential impacts to red-legged frog and western pond turtle to a less-than-significant level. Mitigation Measure 11. Measures shall be implemented to ensure California red-legged frogs and western pond turtle are not present within the City of Dublin Initial StudyfTassajara Road/Fallon Road Ultimate Precise Alignment Page 48 March 2004 'ß I öQ 7.DS' disturbance area during development. Any project related work in the tributaries or adjacent to the "ox-bow" section ofTassajara Creek shall be restricted to the period when these features are dry (usually from mid- summer through October). A USFWS and CDFG approved biologist shall conduct pre-construction surveys to determine if California red-legged frog or western pond turtle are present within these areas within three days prior to initiation of construction activities. If any red-legged frogs are found, the biologist shall contact the USFWS to determine if moving them is appropriate. Immediately following the pre construction survey, all portions of the project site proposed for grading shall be separated from open space areas by fencing appropriate to prevent California red-legged frogs and western pond turtle from entering the development area. A second survey shall be conducted within the fenced area no earlier than 24 hours before the onset of activities to ensure no California red-legged frogs or pond turtles are entrapped in the construction area by the fence. Any western pond turtles found within this area will be captured and relocated downstream, If relocation of red-legged frogs is allowed by the USFWS, any California red- legged frogs captured will be relocated downstream. Impacts to raptor nests: The proposed project could result in the removal or disturbance of occupied raptor nests. Adherence to the following measure would mitigate this impact to a less-than-sígnificant level. Mitigation Measure 12. All trees within the construction zone which will need to be removed for road widening should be cut during the non-nesting season (August 1 to January 30) in the year prior to when road widening is expected to occur, If tree removal cannot occur as outlined above and must take place when road widening occurs then pre-construction surveys for active nests will be required, Surveys to determine the presence of raptor nests should be conducted by a qualified biologist no more than 30 days prior to the initiation of any construction related activities. If rap tors are observed nesting on or near the project site during these surveys, exclusion zones will be established around all active nests, The project will consult with CDFG to determine the size of the exclusion zone, usually 100-300 feet, around the nest location. All project related activity will occur outside of the exclusion area until the young in the nest have fledged, Impacts to occupied bat roosts: The project could result in the removal or disturbance of an occupied bat roosts. Adherence to the following measure would mitigate this impact to a less-than-sígnificant level. Mitigation Measure 13. Surveys of the existing southern tributary culvert should be conducted by a qualified biologist to determine the presence of roosting bats no more than 30 days prior to the initiation of any construction related activities, If a bat roost is observed in the culvert during these surveys, the biologist will determine the type of roost, (daytime, nighttime, or maternity), and construction on and in the immediate vicinity of the culvert City of Dublin Initial Study/Tassajara Road/Fallon Road Ultimate Precise Alignment Page 49 March 2004 ß?- ð{)Z05 will stop until the bats have been excluded from the roost site. If a nighttime roost is present, any demolition work on the culvert will be limited to daytime hours when bats are not present. If a daytime roost is present, the roost site will be outfitted with bat exclusion devices that allow bats to exit the roost site, but not return, Demolition of the culvert will begin only after the biologist has detennined that the roost has been successfully abandoned, If a maternity roost is present, the exclusion zone will remain in place until the young have fledged. After fledging, bats will be excluded and the culvert demolished as specified for a daytime roost. Both new bridges should be designed to pennit bats to establish roost, after construction, Impacts to Congdon' s tarplant: The project will result in the removal of two small populations of Congdon's tarplant. The population on the Wallis Ranch is located within the proposed roadbed and will be removed as part of project grading. The population on the Silveria Ranch will be removed during grading to reduce landslide potential on adjacent hillsides. Adherence to the following measure would mitigate this impact to a less-than-significant level. Mitigation Measure 14. The project will determine the size of the two populations and preserve habitat that supports a known population of Congdon's tarplant at an acreage ratio of 1:1 (preserved: impacted). b, c) Have a substantial adverse impact on riparian habitat or federally protected wetlands? LS / M, Construction of the northern and southern triþutary bridges and removal of the existing culverts at these locations would require realignment or disturbance of an approximately 700-foot reach of the northern tributary stream and an approximately 48 foot reach of the southern tributary, together with the installation of a series of stabilized drops in the stream channel. The existing northerly tributary culvert has significant vertical drop (approximately 10 foot vertical drop at the downstream end), which would need to be replaced by smaller changes in stream elevation over a longer section of stream channel to allow for unimpeded movement of terrestrial and aquatic wildlife, Segments of the existing stream banks within the affected reaches which are not realigned are proposed to be graded to a stable slope angle from their near vertical or unstable condition, This work would result in the removal of all riparian vegetation growing within and along these reaches of the northern and southern tributaries and the temporary dislocation of all wildlife species associated with it. This would be a potentially significant impact, This work will be subject to the jurisdiction of the U.S. Army Corps of Engineers (Corps), California Department of Fish and Game (DFG) and Regional Water Quality Control Board (RWQCB) and pennits from all of these agencies will be required for this work. This potential impact would be a potentially significant impact, This work would occur in areas subject to the jurisdiction of the u.s, Army Corps of Engineers, California Department of Fish and Game (CDFG) and Regional Water Quality Control Board (RWQCB) and pennits from these agencies will be required, Adherence to the following mitigation measure will reduce this impact to a less-than-significant level: Page 50 March 2004 City of Dublin Initial Studyffassajara Road/Fallon Road Ultimate Precise Alignment 'ð~ðb -¿05 Mitigation Measure 15. a) Prior to initiation of work in the northern and southern tributaries, a Creek Restoration Plan will be prepared which specifies how the disturbed reaches of the streams will be placed in a stable condition and their banks revegetated with riparian species native to these tributaries or Tassajara Creek, This plan will require the review and approval of the Corps, DFG and RWQCB. b) Individual grade control structures will have vertical drops of no more than two feet or cascade drops of no more than three feet at any specific location to allow for unimpeded movement of aquatic species. c) All potentially jurisdictional areas located adjacent to the project area will be avoided during construction and no fill will be allowed to enter these areas, Exclusion fencing (construction or silt fencing) will be installed at the boundary between these features and the active project area to protect them and to delimit the boundary of construction and heavy equipment activity. A biological monitor shall oversee the installation of the fencing and periodically monitor the development sites to document avoidance of the off-site areas. The monitor will provide a report to the City and other agencies documenting the avoidance during construction. d) During project construction, no material shall be allowed to enter, or be stored in, any off-site potentially jurisdictional areas. Project related dirt and other material shall be kept at least 50 feet far away from off-site drainage features, All equipment washing will occur downslope from off-site drainage features. Construction of the southerly bridge precludes tree reestablishment but does provide the opportunity for herbaceous or shrub vegetation to become established, primarily at the upstream and downstream ends of the structure, When complete installation of the two bridges would allow unimpeded movement up and down the stream corridor by terrestrial and aquatic wildlife. The road alignment would encroach on the upper bank of a portion of a cutoff oxbow bend in the creek channel. The project would include the installation of a 160-foot long retaining wall with a maximum height of approximately twelve feet at this location to prevent the need to fill a portion of the oxbow which is a jurisdictional feature, All existing riparian vegetation and this portion of the natural channel bank will be removed at the location of the wall. This work will be subject to the jurisdiction of the Corps, DFG, and RWQCB and permits from all of these agencies will be required for this work Construction of the retaining wall is subject to the jurisdiction of the California Department of Fish and Game (DFG) and a Streambed Alteration Agreement will need to be obtained from DFG for its construction, As the retaining wall is a mitigation feature of the project designed to minimize loss of riparian habitat and jurisdictional area no additional mitigation is necessary for its construction. City of Dublin Initial Studyrrassajara Road/Fallon Road Ultimate Precise Alignment Page 51 March 2004 ~£i ~ wS' d) Interfere· T»ith movement of native fish or wildlife species? LS, Approval of the ultimate precise rights-of-way and construction of the proposed widening of Tassajara Road and the construction of Fallon Road would add additional travel lanes to these roads, but with adherence to Mitigation Measure 9, regarding fish species, this impact would be reduced to a less-than-significant level. Since Tassajara Road presently exists as a major north-south arterial roadway, widening of this road would be expected to have a less-than-significant impact with regard to blockage of upland wildlife species. Similarly, the proposed construction of approximately 1400 feet of Fallon Road just east of Tassajara Road is anticipated to be an incremental amount of new road that would have a less-than-significant impact regarding blockage of upland species movement. e, f) Conflict with local policies or ordinances protecting biological resources or any adopted Habitat Conservation Plans or Natural Community Conservation Plans? NI. The proposed ultimate precise alignment of Tassajara Road would be located just east of the existing Tassajara Creek Management Plan, The Tassajara Creek Management Plan was established as part of environmental mitigation for development of portions of the Dublin Ranch located east of Tassajara Road, This area, located within and adjacent to the right-of-way of Tassajara Creek, is proposed to be preserved under a conservation easement and managed as a conservation area in perpetuity to protect and conserve mixed riparian woodland and aquatic habitats found within Tassajara Creek. The precise alignment of Tassajara Road lies outside the boundaries of the Management Plan easement, so no impacts are anticipated, The City of Dublin has also adopted the Eastern Dublin Comprehensive Stream Restoration Program to implement biological resource conservation goals and policies contained in the Eastern Dublin General Plan Amendment and Specific Plan as well as mitigation measures contained in the Eastern Dublin EIR, Section 6.1 of this document establishes a recommended 100-foot wide setback from top of bank of major creeks, such as Tassajara Creek. In some instances, the precise ultimate right-of-way for Tassajara Creek would encroach into this recommended setback area, However, based on the need to reduce grading of sensitive hillside areas on the east side of Tassajara Road and adherence to Mitigation Measures 8 through 15 of this Initial Study to protect sensitive-status plant and animal species within and adjacent to Tassajara Creek, the proposed project would be consistent with the Comprehensive Stream Restoration Program, The site is not located within the boundaries of any Habitat Conservation Plan or Natural Community Conservation Plan, No impacts would therefore result. City of Dublin Initial Studyrrassajara Road/Fallon Road Ultimate Precise Alignment Page 52 March 2004 ßi'5ðb7.ÐS Table 3. Special-Status Plant Species, Livermore/Amador Valley Suit- able . Habitat Status Species (Federal/State/CNP Habitat Notes Present S) on Site Arctostaphylos auriculata --I--/List IB Chaparral and woodlands No Mt. Diablo manzanita usually on siliceous shale soils; blooms January- March Arctostaphylos manzanita ssp --I--/List IB Chaparral and woodlands No laevigata usually in rocky soils; Contra Costa manzanita blooms January-February Atriplex joaquiniana --I --I List IB Grasslands and seasonal Yes San Joaquin spearscale wetlands with alkaline soils; blooms April- November Balsamorhiza macrolepis var BIB/List IB Thin, rocky soil on hillsides, No macrolepis sometimes- on serpentine, Big-scale balsamroot grasslands and woodlands; blooms March-June Blepharizonia plumosa ssp B/B/List IB Thin soils in grasslands; Yes plumosa blooms July-October Big tarplant Calochortus pulchellus BIB/List IB Openings in chaparral, No Mt. Diablo fairy-lantern coastal scrub, and associated grasslands; blooms April-June Cordylanthus palmatus FE/SE/List IB Alkaline vernal pools and No Palmate-bracted bird=s-beak seasonal wetlands; blooms May-October Deinandra bacigalupi --I --I List IB Alkaline meadows and No Livermore tarplant seeps; blooms June-October Dirca occidentalis B/B/ListlB Occurs in variety of forest No Western leatherwood and woodland habitats; blooms January-April Eriogonum truncatum --I --/List IA Occurs in sandy soils of No Mt. Diablo buckwheat grassland, scrub and chaparral habitats on hillsides; blooms April- September City of Dublin Initial Studyrrassajara Road/Fallon Road Ultimate Precise Alignment Page 53 March 2004 ~ lJ¡ 0"b '2-05'" Helianthella castanea --I --I List IB Thin, rocky soil, grassy No Diablo helianthella hillsides, 500-4,000 feet; foothill woodland, chaparral; blooms April- May Hemizonia parryi ssp. congdonii --I _I List IB Alkaline or saline clay soil Yes Congdon's tarplant in annual grasslands in valleys; blooms June- November. Hesperolinon breweri --I _I List IB On serpentine soil, No Brewer's dwarf flax chaparral and oak woodland; blooms May- July Malacothamnus hallii --I--/List IB Chaparral habitats; blooms No Hall=s bush mallow May-September Phacelia phacelioides --I --I List IB Rocky soils in chaparral No Mt, Diablo phacelia and woodland habitats; blooms April-May Sanicula saxatilis B/B/List IB Rocky soils in chaparral, No Rock sanicle forests, and associated grasslands; blooms April- May Streptanthus albidus ssp --/B/List IB Serpentine soils in No peramoenus grasslands and chaparral; Most beautiful iewel flower blooms April-June Streptanthus hispidus --I _I List IB Rocky soils in grasslands No Mt. Diablo jewel flower and chaparral on hillsides; blooms March-June Tropidocarpum capparideum -- I -- I List lA Alkaline-clay soils in Yes Caper-fruited tropidocarpum grassland, oak woodland on hillsides; blooms March- April ·Status: FE = federally listed as "endangered;" SE = State listed as "endangered;" List 1 = rare and endangered throughout its range (A - presumed extinct; B - still existing), City ot Dublin Initial StudyfTassajara Road/Fallon Road Ultimate Right-Ot-Way Page 53a March 2004 ~1 C5() 2D~ Table 4 - Special-Status Wildlife Species, Livermore/Amador Valley Species Status* Habitat Notes Suitable Federal/ Habitat State Present on Site Branchinecta lynchi FT/-- Vernal pools and other ponding No Vernal pool fairy shrimo seasonal wetlands Ambystoma ca/iforniense C/SC Seasonal ponds; upland Yes California tiger salamander IZrassland/savanna for estivation Rana aurora draytonU FT/SC Ponds and streams Yes California red-Ie!!!!ed frO!! Rana boylii -/SC Perennial creeks and streams No Foothill vellow-Ie!!ged frO!! usuallv with cobble bottoms C/emmys marmorata -/SC Ponds and streams Yes Western pond turtle Masticophis /atera/is euryxanthus FT/ST Scrub and associate~ grasslands No Alameda whip snake Aquila chrysaetos (nesting) BAlSC Large trees for nesting; No Golden eagJe Fa/co peregrinus anatum (nesting) --/SE Nests on cliffs, forages over No American perelZrine falcon variety of habitats Accipiter striatus (nesting) -/SC Nests in dense woodlands and No Sham-shinned Hawk forests. foralZes in same Accipiter cooperi (nesting) -/SC Nests in trees in woodlands, No CooDers Hawk foralZes in a variety of habitats E/anus caeru/eus -/CFP Nests in trees and tall shrubs, Yes White-tailed kite foralZes over a variety of habitats Speotyto cunicu/aria hypugea -/SC Grasslandlpastureland; nest in Yes (nesting) ground squirrel dens Western burrowimr ow I Eremophila a/pestris (nesting) -/SC Large patches of well grazed Yes California horned lark !ITassland Age/aius tricolor (nesting) -/SC Nests in dense emergent No Tricolored blackbird ve!!etation Neotoma fuscipes annectens -/SC Riparian, woodland, and upland No San Francisco duskv-footed woodrat scrub habitats City of Dublin Initial Studyffassajara Road/Fallon Road Ultimate Precise Alignment Page 54 March 2004 - ßB lit) ;).O~ Vulpes macrotus mutica FEIST Grassland, savanna, and other No San Joaauin kit fox ooen habitats Antrozous pallidus (roosts) -/SC Roosts in caves, tunnels, No Pallid bat buildings; forages over variety of habitats Plecotus townsendii townsendii -/SC Roosts in caves, tunnels, No (roosts) buildings; forages over variety of Townsend's bi!r-eared bat habitats Eumops perotis californicus -/SC Roosts in crevices of large No California mastiff bat outcrops; forages over wide variety of habitats * FE = federally listed as endangered FT = federally listed as threatened C = candidate for listing as threatened or endangered BA= Federal Bald Eagle Act SE = California listed as endangered ST = California listed as threatened SC = California species of special concern CFP=California fully protected City ot Dublin Initial StudylTassajara RoadlFallon Road Ultimate Right-Ot-Way Page 54a March 2004 ßq ó6 &()~ 5. Cultural Resources Environmental Setting A cultural records search of the project area was completed by the Northwest Information Center at Sonoma State University in October, 2002. The search included consultation of California Office of Historic Preservation records, base maps, mstoric maps and literature for Alameda County on file at the Northwest Information. No recorded Native American or mstoric period archeological resources are identified on the project site, However, a mstoric period dairy farm is identified on the west side of Tassajara Road dating to the mid 1920's (6582 Tassajara Road), Native American archeological sites in this portion of Alameda County tend to be located on alluvial flats at the base of mIls near sources of water, such as springs, Since the project area is located along alluvial benches associated with the confluence of seasonal drainages and Tassajara Creek, it is therefore considered an archeologically sensitive area. In addition, several Native American archeological sites have been recorded downstream along Tassajara Creek south of the project area. Given the environmental setting of the project and the archeological sensitive nature of the general area, the project site has a moderate potential for Native American sites. Historic archeological sites associated with early rancmng and agricultural uses in the area may also be present in the area, so that there is a moderate potential of encountering mstoric-period archeological deposits in the pr.oject area. Project Impacts a) Cause substantial adverse change to significant historic resources? NI. Although one mstoric site (an early 20th-century ranch/homestead complex) was identified near the project area, proposed construction of the widened road would not be located near this resource, Therefore, no impact would result to mstoric resources. b, c) Cause a substantial adverse impact or destruction to archeological or paleontological resources? LS/M. There is a remote but potentially significant possibility that construction activities, including site grading, trenching and excavation, may uncover significant archeological and/ or paleontological resources on the site, The Eastern Dublin EIR categorized these resources as pre- mstoric cultural resources, Three potential pre-mstoric sites were identified by the EIR within the proposed Specific Plan project area, The Eastern Dublin EIR assumed that all pre-mstoric sites would be disturbed or altered in some manner, Tms potential impact was identified and addressed in the Eastern Dublin ErR (Impact 3,9/ A) and implementation of Mitigation Measures 3.9/1.0 through 3.9/4,0 reduce this impact to a less-than-significant level. These mitigation measures include: Mitigation Measure 16. Final roadway construction plan(s) and specifications shall require mechanical or hand subsurface testing on all locations of premstoric resources to determine the presence or absence of midden deposits. (Eastern Dublin EIR Mitigation Measure 3.9/1,0) City of Dublin Initial StudyfTassajara Road/Fallon Road Ultimate Precise Alignment Page 55 March 2004 étOGb~5 Mitigation Measure 17. Final roadway constructionplan(s) and specifications shall requires all locations containing either midden components or concentrations of cultural materials on the surface to be recorded on State of California survey forms, (Eastern Dublin EIR Mitigation Measure 3.9/2.0,) Mitigation Measure 18, Final roadway construction plan(s) and specifications shall require evaluative testing if proposed development would directly or indirectly impact recorded and mapped location of resources. (Eastern Dublin ErR Mitigation Measure 3,9/3.0) Mitigation Measure 19, Final roadway construction plan(s) and specifications shall require a qualified archeologist to develop protection programs for significant resources whose conditions would be altered by proposed development. (Eastern Dublin EIR Mitigation Measure 3,9/4,0) Mitigation Measure 20. Final roadway construction plan(s) and specifications shall require grading and construction to cease in the event that historic or prehistoric resources are discovered during such activities, (Eastern Dublin ErR Mitigation Measure 3,9/5,0) Adherence to the above Mitigation Measures would reduce potential impacts to archeological or palentological resources to a less-than-significant level. d) The Eastern Dublin Specific Plan also contains policies (Policies 6-24 and 6-25) requiring research of archaeological resources prior to construction and determination of the significance and extent of any resources uncovered during grading and construction. Disturb any human remains, including those interred outside of a formal cemetery? LS / M. A remote possibility exists that historic or pre-historic human resources could be uncovered on the site during construction activities, Implicit in the mitigation measures of the Eastern Dublin EIR and Eastern Dublin Specific Plan policies is the potential for discovery of human resources near or within the identified pre-historic and historic sites. With implementation of Mitigation Measures 16 through 20, and adherence to the Eastern Dublin Specific Plan policies relating to cultural resources (Policies 6-24 and 6-25), this impact would be less-than-significant. 6. Geology and Soils Environmental Setting Geology and soils The project area is located in the central portion of the Coast Ranges geomorphic province, The Coast Ranges are characterized by a series of parallel, northwesterly trending, folded and faulted mountain chains, A dominant structural feature is Mt. Diablo, located approximately nine miles north of the project area. Page 56 March 2004 City of Dublin Initial Studyrrassajara Road/Fallon Road Ultimate Precise Alignment q\ Db ~o5' The project area does not lie within an Earthquake Fault Zonë (formerly Alquist-Priolo Special Studies Zone). Major active faults in the region that influence earthquake susceptibility include the San Andreas, Hayward, Calaveras, and Greenville Faults, Topographically, the project area is relatively flat, with moderate to steep slopes located immediately adjacent to portions of the roadway to the east. Tassajara Creek lies directly west of the project area with incised banks located approximately 30 to 50 feet below the existing roadbed elevation. Regulatory framework The Eastern Dublin Comprehensive Streambed Restoration Program, adopted in 1998 to fulfill a Mitigation Measure of the Eastern Dublin Specific Plan requires a 100-foot wide setback from tops of bank of major creeks (which includes Tassajara Creek) to ensure both structural safety to buildings and related improvements adjacent to creeks and to provide a buffer of sensitive habitat within creeks, The City of Dublin has also adopted Ordinance No. 52-87, which requires improvements be setback a minimum of 20 feet from tops of banks of creeks, or from a 2:1 projected slope from the toe of slope if the bank is irregular, to ensure structural safety and minimize the effects of bank erosion. Project Impacts a) Expose people or structures to potential substantial adverse impacts, including loss, injury or death related to grOund rupture, seismic ground s.haking, ground failure, or landslides? LS / M. Similar to many areas of California, the project area is likely subject to ground shaking caused by seismic activity on the regional faults identified above, Under moderate to severe seismic events, which are probable in the Bay Area over the next 30 years, utilities and other improvements constructed in the project area would be subject to damage caused by ground shaking. However, since the project area is not located within an Earthquake Fault Zone (formerly Alquist-Priolo Zone), the potential for ground rupture is anticipated to be minimal, The Eastern Dublin EIR identified that the primary and secondary effects of ground-shaking (Impacts 3.6/B and 3,6/C) could be potentially significant impacts, With implementation of Mitigation Measure 3,6/1,0 the primary effects of ground-shaking are reduced to a less-than-significant level by using modern seismic design for resistance to lateral forces in construction, which would reduce the potential for structure failure, major structural damage and loss of life, Mitigation Measures 3,6/2,0 through 3,6/7.0 contained in the Eastern Dublin ErR will be implemented to reduce the secondary effects of ground-shaking on proposed project improvements to a less-than-significant level. These mitigation measures include: Mitigation Measure 21, Setbacks shall be established from unstable and potentially unstable landforms as well as use of appropriate project City of Dublin Initial StudyfTassajara Road/Fallon Road Ultimate Precise Alignment Page 57 March 2004 ~ qd- 00 ~Q.:) engineering design techniques to ensure safety, (Eastern Dublin EIR Mitigation Measure 3,6/2.0) Mitigation Measure 22. Appropriate grading and design shall be used to completely remove unstable and potentially unstable materials in hillside development areas, (Eastern Dublin Mitigation Measure 3.6/3,0) Mitigation Measure 23. Engineering techniques and improvements, such as retention structures, drainage improvements, properly designed keyways and adequate compaction shall be used to improve the stability of fill areas and to reduce seismically induced fill settlement. (Eastern Dublin EIR Mitigation Measure 3,6/4,0 and 5,0) , Mitigation Measure 24. Roads, structural foundations, utilities shall be designed in such a manner as to accommodate estimated settlement without failure, especially across areas of cut and fill. (Eastern Dublin Mitigation Measure 3,6/6,0) Adherence to Mitigation Measures 21 through 24 will ensure that infrastructure facilities built within the project area will comply with generally recognized seismic safety standards so that effects due to ground shaking and ground failure will be less-than-significant. b) Is the site subject to substantial erosion and/or the loss of tQPsoil? L5/ M, Construction of the proposed road widening would modify the existing ground surface and alter patterns of surface runoff and infiltration and could result in a short-term increase in erosion and sedimentation caused by grading activities, Long-term impacts could result from modification of the ground-surface and removal of existing vegetation (Eastern Dublin EIR Impact 3,6/L), With implementation of Mitigation Measures 3,6/27,0 and 28,0 contained in the Eastern Dublin EIR and re-stated below, both of these impacts would be less-than-significant. These mitigation measures include: Mitigation Measure 25, Grading activities shall be timed to avoid the rainy season as much as possible and that interim erosion control measures be taken to control runoff and minimize erosion, (Eastern Dublin EIR Mitigation Measure 3,6/27.0) Mitigation Measure 26, Long-term erosion and sedimentation shall be reduced through appropriate design, construction and continued maintenance of surface and subsurface drainage, Future road improvement planes) and specifications for this project incorporate erosion control plans for all aspects of the project that would involve trenching, excavation or stockpiling of dirt, The plan(s) shall be prepared by a registered civil engineer and be consistent with applicable City of Dublin and Regional Water Quality Control Board guidelines and standards, (Eastern Dublin EIR Mitigation Measure 3.6/28,0) City of Dublin Initial StudylTassajara Road/Fallon Road Ultimate Precise Alignment Page 58 March 2004 q3 00:)05 The Eastern Dublin Specific Plan also contains a policy (Policy 6-43), which requires that new development be designed to provide effective control of soil erosion as a result of construction activities. c,d) Is the site located on soil that is unstable or expansive or result in potential lateral spreading, liquefaction, landslide or collapse? LS 1 M. Portions of the project area are underlain by soil types with high shrink-swell potential, which have the potential to cause damage to foundations, slabs, and pavement (Eastern Dublin EIR Impact 3.6/H), With adherence to the following mitigation measures, contained in the Eastern Dublin EIR, potential shrink-swell impacts would be less- than -significan t, Mitigation Measure 27. A design-level geotechnical investigation shall be prepared to characterize site-specific soils and bedrock conditions and to fonnulate specific design criteria for development projects, (Eastern Dublin EIR Mitigation Measure 3,6/14.0) Mitigation Measure 28, Specific measures shall be included in future specific roadway planes) and specifications to control moisture in the soil to reduce impacts from expansion soil and rock. (Eastern Dublin EIR Mitigation Measure 3.6/15,0) Mitigation Measure 29, Appropriate foundation and pavement design shall be employed, based on a site-specific geotechnical study, for new structures to minimize effects of expansive soil and rock. (Eastern Dublin EIR Mitigation . Measure 3,6/16,0) In certain limited locations, the proposed roadway would not comply with either the 100-foot setback generally required by the Comprehensive Stream Restoration Program or the 20-foot structural setback required by Ordinance No, 52-87. This is based on the close proximity of existing Tassajara Road to Tassajara Creek on the west and to steep hillsides on the east. The proposed alignment of Tassajara Road near Tassajara Creek would be stable if based on site-specific geotechnical recommendations, Based on preliminary review of the proposed ultimate alignment by Kleinfelder, the City of Dublin's geotechnical consultant, a vertically-faced retaining wall system is feasible geotechnically along a portion of the proposed road alignment, provided the wall is designed for both static and seismic stability, Such a wall has been incorporated into the preliminary design of the project (see Exhibit 5), Therefore, less-than-significant impacts would occur with regard to future landslides and soil stability. e) Have soils incapable of supporting on-site septic tanks if sewers are not available? NI, The proposed project involves widening of an existing roadway, so there would be no impacts with regard to septic systems. City of Dublin Initial StudyfTassajara Road/Fallon Road Ultimate Precise Alignment Page 59 March 2004 q LI ~;}f)5' 7. Hazards and Hazardous Materials Environmental Setting The project area consists of paved roadways with open grasslands on each side. Historically, the properties adjacent to the project area have been used for agriculture, primarily as grazing land and limited dry-farming of crops. Some pesticide and herbicide use may be associated with historic and on-going agricultural uses and some petroleum-based products may have been used to run and maintain farm equipment. Project Impacts a) Create a significant hazard to the public or the environment through the routine transport, use or disposal of hazardous materials? NI. There would be no impacts with regard to transport, use or disposal of hazardous materials, since the proposed project involves establishing ultimate precise roadway alignments for thoroughfares in the Eastern Dublin area and would not involve any type of industrial or mineral extraction processes, 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? LS, Although small quantities of residual potentially hazardous materials may be present within the ground surface adjacent to the roadway, primarily petroleum products dropping by passing vehicles and chemicals related to agricultural operations, this amount is anticipated to be minimal and less-than- significant. c) Emit hazardous materials or handle hazardous materials or acutely hazardous materials, substances, or waste within one-quarter mile of an existing or proposed school? NI, One private school exists on the east side of Tassajara Road (Quarry Lane School), Other public schools are planned for properties east and west of Tassajara Road. However, approval and implementation of the proposed project would have no impact with regard to these schools, since the project involves widening of an existing roadway and would not result in the emission of hazardous materials or substances. d) Is the site listed as a hazardous materials site? NI, No properties comprising the project site are listed on the State of California Department of Toxic Substances Control as an identified hazardous site as of January 10, 2003, There is therefore no impact with regard to this topic. e,f) Is the site located within an airport land use plan of a public airport or private airstrip? NI. The project area is not located near a public or private airport, airfield or airstrip. No impacts are therefore anticipated regarding airport safety issues. g) Interference with an emergency evacuation plan? NI. The proposed project would include the ultimate widening of an existing major roadway, which should improve emergency evacuation in this portion of Eastern Dublin, Therefore, no impacts are anticipated with regard to interference with emergency evacuation plans. City of Dublin Initial StudyfTassajara Road/Fallon Road Ultimate Precise Alignment Page 60 March 2004 - qr; Db ~s h) Expose people and structures to a significant risk of loss, injury or death involving wildland fires or where residences are intermixed with wildlands? NI. Although the project area lies in a substantially undeveloped area, the proposed project does not include construction of flammable improvements and would provide improved access to portions of the Eastern Dublin for firefighting purposes. No impacts are therefore anticipated. 8. Hydrology and Water Quality Environmental Setting Local surface water The project area is located within the Alameda Creek watershed which drains to the San Francisco Bay via the Arroyo Del Valle and Arroyo de la Laguna. The closest main surface body of water to the project area is Tassajara Creek, which flows in a north- south direction immediately west of existing Tassajara Road, Two unnamed tributaries to Tassajara Creek currently flow under Tassajara Road, one immediately south of the Quarry Lane School site and the second in the northerly portion of the project area. The project area is located within the jurisdiction of Zone 7 of the Alameda County Flood Control and Water Conservation District (Zone 7), Zone 7 provides maintenance of regional drainage facilities within this portion of Alameda County, Surface water quality Water quality in California is regulated by the V,S. Environmental Protection Agency's National Pollution Discharge Elimination System (NPDES), which controls the discharge of pollutants to water bodies from point and non-point sources. In the San Francisco Bay area, this program is administered by the San Francisco Bay Regional Water Quality Control Board (RWQCB). Federal regulations issued in November 1990 expanded the authority of the RWQCB to include permitting of ~tormwater discharges from municipal storm sewer systems, industrial processes, and construction sites that disturb areas larger than five acres, The City of Dublin is a co-permittee of the Alameda County Clean Water Program, which is a coordinated effort by local governments in Alameda County to improve water quality in San Francisco Bay, In 1994, the RWQCB issued a set of recommendations for New and Redevelopment Controls for Storm Water Programs. These recommendations include policies that define watershed protection goals, set forth minimum non-point source pollutant control requirements for site planning, construction and post-construction activities, and establish criteria for ongoing reporting of water quality constriction activities. Watershed protection goals are based on policies identified in the San Francisco Bay Basin Water Quality Control Plan (Basin Plan), and the entire program relies on the implementation of Best Management Practices to limit pollutant contact with stormwater runoff at its source and to remove pollutants before they are discharged into receiving waters. The California Stormwater Quality Task Force has published a series of Best Management Practices handbooks for use in the design of source control; and treatment programs to achieve the water quality objectives identified by the Basin Plan for the beneficial uses of surface waters, groundwaters, wetland and marshes, City of Dublin Initial StudyfTassajara Road/Fallon Road Ultimate Precise Alignment Page 61 March 2004 ý ~ Cl() ~O~ Existing surface water quality is affected by a number of pollutants generated from existing structures, parking area and open space uses on the project site, including but not limited to petrochemicals (oil and grease), yard and landscape chemicals (herbicides, pesticides and fertilizers), erosion from construction sites and similar sources. Flooding Portions of the project area located within Tassajara Creek are included within a 100- year flood hazard area as shown on the applicable Flood Insurance Rate Map for eastern Dublin (Community Panel No. 060705 0002 B). None of the upland portion of the project area is located within a flood hazard area, Project Impacts a) Violate any water quality standards or waste discharge requirements? LS/M. Approval of the ultimate precise alignment and construction of proposed road widenings consistent with the approved alignments could result in potentially significant discharges of erosion of graded material into Tassajara Creek and other bodies of water. Long-term, runoff of oil, grease and other chemicals from the roadway could discharge into Tassajara Creek, degrading surface water quality. Adherence to Mitigation Measures 3.5 I 53,0, 54.0 and 55.0 contained in the Eastern Dublin ErR and re-stated below, will ensure that surface water quality standards will be met during the construction and operational phases of roadway widening. These mitigation measures require: Mitigation Measure 30, The proposed project shall incorporate Best Management Practices to minimize stormwater pollution, (Eastern Dublin ErR Mitigation Measure 3.5 I 53.0) Mitigation Measure 31, The proposed project shall meet all water quality standards set forth in the City's NPDES Permit. (Eastern Dublin EIR Mitigation Measure 3.6/54.0) Mitigation Measure 32. The proposed project shall meet water quality standards imposed under the Alameda County Clean Water Program. (Eastern Dublin EIR Mitigation Measure 3.6/55,0) Pursuant to these three adopted mitigation measures, it is therefore recommended that final project improvement plan(s) and specifications incorporate requirements that future roadway and related improvements to include Best Management Practices as included in the Alameda County Clean Water Program to minimize surface water quality impacts. Less-than-significant impacts are therefore anticipated, b) Substantially deplete groundwater recharge areas or lowering of water table? LS. Less- than-significant impacts are anticipated with regard to depletion of groundwater resources, since minor new areas of paving would be added to increase the width of Tassajara Road and to construct a portion of Fallon Road that cou14 reduce groundwater recharge, The amount of paving would not be significant, however, City of Dublin Initial Studyn-assajara Road/Fallon Road Ultimate Precise Alignment Page 62 March 2004 q Î cro ;;.oS-- given the 'length of the roadway through the project area, Since the proposed project would not include habitable buildings or structures, the project would not utilize groundwater quantities, so no impacts would result with regard to lowering of the water table. c) Substantially alter drainage patterns, including streambed courses such that substantial siltation or erosion would occur? LS. New paved surfaces would be added adjacent to the existing roadway, so that the quantity (square footage) of impervious surfaces would be increased, however as noted above, the amount of new paved surfaces would be less-than-significant. Existing drainage patterns may be slightly modified based on the new alignment, however adherence to Mitigation Measure 33 contained in this Initial Study will reduce surface water quality impacts from the widened roadways to a less-than-significant level. In addition, storm water runoff from properties adjacent to the project area are required by the City of Dublin to prepare and implement Storm water Pollution Prevention Plans to minimize polluted stormwater runoff from reaching the Tassajara Road and Fallon Road, d) Substantially alter drainage patterns or result in flooding, either on or off the project site? NI. No impacts or significant changes to drainage patterns are anticipated since minor additions to existing impervious surfaces are proposed in the project, e) Create stormwater runoff that would exceed the capacity of drainage systems or add substantial amounts of polluted runoff LS 1M. 11inor increases in the quantity of existing stormwater runoff would result as part of the widening of Tassajara Road and construction of portion of Fallon Road based on an estimated minor increase in the amount of impervious surface, Increased runoff would be disposed of in Tassajara Creek via two new storm drain outfalls (one each located at the southerly and northerly tributaries to Tassajara Creek) and ultimately transported to San Francisco Bay. The addition of polluted stormwater from the project site into adjacent creeks could result in potentially significant impact regarding degradation of surface water quality and the following measure is recommended to reduce this impact to a less-than-significant level. Mitigation Measure 33. Storm drain outfall structures installed as part of the proposed project shall be equipped with storm drain filters as approved by the Dublin Public Works Department and that comply with Regional Water Quality Control Board standards. f) Substantially degrade water quality? LS/M. Less-than-significant water quality impacts would occur through approval and implementation of the proposed project, Adherence to Mitigation Measures 30 through 32, as described above, will ensure that water quality issues will be less-than-significant. g) Place housing within a 1 DO-year flood hazard area as mapped by a Flood Insurance Rate Map? NI. The proposed project does not include a housing component, so there City of Dublin Initial StudyfTassajara Road/Fallon Road Ultimate Precise Alignment Page 63 March 2004 . . .",.- . . .",.- . . .",.- OU NíY .",.-,.""'- COSíA~" CONí~~.",.-. ;OUNíY ..""'- L.AMEDA . . .",.- A . . .",.- ..""'- . . .",.- .2 c ~ 'ð u ,;. " 0; ~ .~ ~ 00( ~ g c¡¡ CITY OF DUBLIN TASSAJARA ROAD WIDENING NEGATIVE DECLARATION ............. . .",.- ;)oS «-~ j-- "'-<V/~-I. ,,"'"{ «- 0«- / ,,"?- +/00 (' ,,~ ./ f j ~ ! < i.J.J i.J.J Q:" () '<{" Q:" '<{" '"';) '<{" o CI) :! Exhibit 8 LOCAL CREEKS N ~ a :'::::·:1-;:;~h~:·;:" Project Site 300 , 600 1200 feer , I AGf 0ò ~ would be no impact with regarding to placement of housing within a 100-year flood plain, h, i) Place within a I DO-year flood hazard boundary structures that impeded or redirect flood flow, including dam failures? NI. The proposed project would include replacement of existing culverts with bridges over both the northern and southern tributaries of Tassajara Creek. Both creek tributaries lie within IOO-year flood plain areas. The proposed replacement bridges would be designed as "clear span" bridges so that no piers or other structural obstructions to flood waters would be creased, No impacts are anticipated with regard to impedance of floodwaters or flows since the proposed bridges would not block flood flows, j) Result in inundation by seiche, tsunami or mudflows? NI. The project area is located well inland from San Francisco Bay or other major bodies of water to be impacted by a tsunami or seiche, No impacts would therefore result. 9. Land Use and Planning Environmental Setting Existing land uses Land uses flanking Tassajara Road and the future alignment of Fallon Road include primarily open, undeveloped properties with scattered low-.density rural residential dwellings. The southerly end of the project area along Tassajara Road includes Quarry Lane School, which was initially developed in the unincorporated portion of Alameda County, but which has been annexed to the City of Dublin, A landscape contractor yard has been established immediately south of the school. An equipment storage yard also exists on the west side of Tassajara Road on the Wallis Ranch property, Generally, land uses to the south of the project area along Tassajara Road are more urban in nature and include recently constructed single family subdivision, multi- family housing complexes and neighborhood-serving commercial centers. North of the project area, within Contra Costa County, land uses generally consist of agricultural, rural residential and/ or undeveloped properties, As noted in the Project Description section, the major natural feature of the project site is Tassajara Creek, which meanders along the west side of Tassajara Road. Regulatory framework Tassajara Road presently traverses through the unincorporated portion of Alameda County, although the Local Agency Formation Commission has placed properties within this portion of the County within the Sphere of Influence of the City of Dublin, which means that Dublin will likely ultimately annex these properties. A request has been filed to annex the Wallis Ranch and adjacent smaller properties on the west side of Tassajara Road into the City. The Silveria/Haight/Nielsen annexation, located on the east side of Tassajara Road, has recently been approved by the Alameda County Local Agency Formation Commission (LAFCO), When and if annexation of the City of Dublin Initial StudyfTassajara RoadlFallon Road Ultimate Precise Alignment Page 64 March 2004 ID"O Db~5"" Wallis Ranch property is approved by LAFCO, a majority of-properties adjacent to Tassajara Road would be located within the incorporated City of Dublin. Land uses for unincorporated properties adjacent to Tassajara Road are governed by the East County Area Plan (ECAP), adopted by Alameda County in 1994, most recently updated in 2000, ECAP identifies properties along Tassajara Road as lying within the Urban Growth Boundary adjacent to the City of Dublin, Existing County Zoning is A- Agricultural, which pennits a range of low density housing on large lots, crop production, cattle grazing, hiking and riding trails and similar uses. More intensive land uses are allowed subject to the issuance of a Conditional Use Pennit by Alameda County. The Eastern Dublin Specific Plan and General Plan Amendment was adopted in 1993 to guide the future development of properties east of Parks RFT A. Land uses included in the Eastern Dublin General Plan and Specific adjacent to Tassajara Road includes a mix of Residential uses at various densities, and Open Space. Both the ECAP Plan and the City of Dublin Eastern Dublin General Plan and Specific Plan call for the ultimate widening of Tassajara Road to six travel lanes. Project Impacts a) Physically divide an established community? LS, Approval of the ultimate precise alignment and future construction of the proposed roadway widenings could interfere with future local residents east of Tassajara RQad from accessing planned local and regional parks on the west side of the road. Specifically, the Gty of Dublin has planned a local park on the Un property(also known as Dublin Ranch West), An application has been filed with the City of Dublin to develop this property, The East Bay Regional Park District is also planning a regional multi-use trail on the west side of Tassajara Creek. The inclusion of a future pedestrian bridge overcrossing over widened Tassajara Road would allow for a safe roadway crossing, Implementation of the proposed project would also require either dedication or purchase of additional right-of-way from property owners abutting the existing roadway and the future alignment of Fallon Road, The amount of future right-of- way is not known at this time and will depend on the final road alignment adopted by the City of Dublin, Since the widening of Tassajara Road and the construction of Fallon Road have been identified in appropriate land use regulatory documents adopted by the Oty of Dublin and Alameda County, dedication or purchase of future right-of-way is anticipated to be less-than- significant, b) Conflict with any applicable land use plan, policy or regulation? NI. Adoption of the ultimate precise road alignments and the future road widening would be consistent with the number of travel lanes envisioned in both City and County planning documents for Tassajara Road, The entirety of Fallon Road is within the City of Dublin and future construction of this road is included in the Eastern Dublin General Plan and Specific Plan, No impacts would therefore result. City of Dublin Initial StudyfTassajara Road/Fallon Road Ultimate Precise Alignment Page 65 March 2004 l01 f5b ;;.'OS- c) Conflict with a habitat conservation plan or natural community conservation plan? NI. See section 4 e and f of this Initial Study. 10. Mineral Resources Environmental Setting The project area contains no known mineral resources, This is based on the Eastern Dublin EIR. Project Impacts a, b) Result in the loss of availability of regionally or locally significant mineral resources? NI. The Eastern Dublin EIR does not indicate that significant deposits of minerals exist in the project area, so no impacts would occur, 11. Noise Environmental Setting The City defines "noise" as a sound or series of sounds that are intrusive, irritating, objectionable and/ or disruptive to daily life, Noise is primarily a concern with regard to noise sensitive land uses such as residences, schools, churches and hospitals. Although noise is controlled around commercial, industrial and recreation uses, community noise levels rarely exceed maximum recommended levels for these uses, The Noise Element of the General Plan E1R identifies the following primary sources of noise in Dublin: traffic noise from freeways and major roadways within the community and noise generated by the BART line adjacent to the 1-580 freeway. Near the project area, the Eastern Dublin EIR notes that major noise sources include traffic noise and helicopter overflights from nearby Camp Parks RFT A, west of Tassajara Road, Figure 3.10A contained in the Eastern Dublin EIR identifies a corridor of properties adjacent to Tassajara Road as being subject to noise levels above 60 decibels, The Noise Element identifies the following maximum noise exposure levels by land use type. Page 66 March 2004 City of Dublin Initial StudyfTassajara Road/Fallon Road Ultimate Precise Alignment ~~ Db ~o5' Table 5, City of Dublin Land Use/Noise Compatibility Standards (decibels) Land Use Normally Conditionally Normally Clearly Acceptable Acceptable Unacceptable Unacceptable Residential 60 or less 60-70 70-75 75+ Lodging Facilities 60-70 70-80 80+ - Schools, churches, 60-70 70-80 80+ - nursing homes Neighborhood 60 or less 60-65 65-70 70+ parks Office / Retail 70 or less 70-75 75-80 80+ Industrial 70 or less 70-75 75+ - Source: Dublin General Plan Noise Element, Table 9-1 The City of Dublin also enforces an interior noise standard of 45 decibels for residential dwellings, Project Impacts a) Would the project expose persons or generation of noise levels in excess of standards established by the General Plan or other applicable standard? LS, Adoption of ultimate precise alignment for the two roadways would increase the number of vehicle trips using the road, resulting in future noise increases based on greater vehicular noise. This could result in significant noise impacts in excess of City noise standards for future residents near the widened road (Eastern Dublin EIR Impact 3,101 A). However, adherence to Mitigation Measure 3.10/1.0 would reduce noise impacts to future residents along the roads to a less-than-significant level. This Mitigation Measure requires future residential subdividers to prepare acoustic reports for future residential development adjacent to Tassajara Road and Fallon Road and to implement site-specific noise reduction methods contained in these reports, Noise impacts from the proposed widening of Tassajara Road on existing residents near the road was also identified as a potentially significant noise source in the Eastern Dublin EIR (Impact 3,10.2,0), Even with adherence to Mitigation Measure 3,10/2,0, that requires future subdividers to provide noise barriers for existing residences, including construction of solid fences around existing structures, this impact was determined to be significant and unmitigatable and was included in the Statement of Overriding Considerations when the Eastern Dublin EIR was certified by the City of Dublin. Therefore, no future analysis of this impact is required, A statement of overriding considerations with regard to noise would have to be adopted by the City of Dublin if this project were to be approved b) Exposure of people to excessive groundborne vibration or groundborne noise levels? LS/M. Implementation of the proposed roadway improvements would use standard construction techniques. Adherence to Mitigation Measures 3.10/4,0 and 3,10/5.0 (discussed under item "d," below) will ensure that groundborne impacts would be limited to normal construction hours and would result in less-than-significant impacts. City of Dublin Initial StudyfTassajara Road/Fallon Road Ultimate Precise Alignment Page 67 March 2004 \ù3r7b ;)OS' c) Substantial increases in permanent in ambient noise levels? NI. There would be no changes and no impacts with regard to potential permanent noise impacts since no noise-generating uses are associated with the proposed project. d) Substantial temporary or periodic increase in ambient noise levels in the project vicinity above levels without the project? LS 1 M. Construction of the project could result in short-term noise and vibration due to crenching, grading and similar activities. There would also be increased noise levels from trucks and other construction vehicles needed for the project. This impact was addressed in the Eastern Dublin EIR as Impact 3.10/E, Exposure of Existing and Proposed Residents to Construction Noise. The following mitigation measures have been included in the Eastern Dublin EIR and are restated below to reduce construction noise to a less- than-significant level. Mitigation Measure 34, Construction Management Planes) shall be filed with the City of Dublin Public Works Deparbnent prior to commencement of any construction, The Plan(s) shall identify specific measures to be taken to minimize short-term noise on local resident, including but not limited to limitations on hours of operation for construction, including unloading of material, equipment warm up and tune-up times, and a requirement that all gasoline-powered equipment be equipped with mufflers, (Eastern Dublin EIR Mitigation Measure 3.10/4,0) Mitigation Measure 35, Requires compliance with tocal noise standards relating to construction activities, including limitation on hours of construction operation, (Eastern Dublin EIR Mitigation Measure 3,10/5,0) The above mitigation measures will also serve to limit any groundborne vibrations to a less-than-significant level. e, f) For a project located within an airport land use plan, would the project expose people to excessive noise levels? NI. Although the southerly portion of the project area lies within the Livermore Airport Plan Referral area, the project does not include construction of buildings or facilities that would house people, No impacts are therefore anticipated in terms of this topic, 12. Population and Housing Environmental Setting The Association of Bay Area Governments (ABA G), the Council of Governments organization responsible for preparing and cracking population and demographic changes within the Bay Area region anticipates that the Bay Area will continue to grow at a steady rate. Factors contributing to this growth include a favorable climate, recreational activities, top universities and career opportunities, Over the next 20 years, the population is expected to increase to more than 8 million persons, a 16% increase over the current (2002) population. City of Dublin Initial Studyrrassajara Road/Fallon Road Ultimate Precise Alignment Page 68 March 2004 \04- ðQ~ Population inc~eases are expected to be primarily due to increases in births and longer life expectancies rather than significant in-migration, Table 6 depicts anticipated comparative growth in the Bay Area, Alameda County and Dublin, Table 6. Regional, County and Dublin Total Population (Pop) & Household (HH) Projections(1) 2000 2010 2020 Pop. HHs Pop. HHs Pop. HHs Region 6,783,760 2,466,019 7,513,800 2,697,080 8,014,100 2,894,370 Alameda 1,443,741 523,366 1,588,900 526,010 1,669,400 595,400 Co. Dublin 30,007 9,335 47,500 15,330 57,900 19,260 Source: ABAGProiections 2002 Alameda County's growth is expected to reach a level of 1.67 million over the next 20 years, making it the second most populous county in the ABAG region behind Santa Clara County. ABAG notes that the Tri-Valley areas are anticipated to experience the highest growth rates in Alameda County over the next 20 years. The Eastern Dublin Specific Plan and General Plan Amendment, adopted in 1994, anticipates a buildout population of 17,979 residents within the Project area. Project Impacts a) Induce substantial population growth in an area, either directly or indirectly? NI, Approval of the proposed project would not increase population growth in the Eastern Dublin area, since the proposed roadways have been planned by both the City of Dublin as part of the Eastern Dublin Specific Plan and General Plan Amendment, as well as Alameda County's East County Area Plan regarding Tassajara Road. Although the widened roadways would allow for additional residential and non-residential growth in Eastern Dublin, such growth has been planned and analyzed as part of previously approved environmental documents, including but not limited to the Eastern Dublin EIR. No impacts are therefore anticipated. b/c) Would the project displace substantial numbers of existing housing units or people? LS. Additional right-of-way would be required to widen both roads. Based on the ultimate roadway alignment adopted by the City of Dublin, one residential City of Dublin Initial Studyrrassajara Road/Fallon Road Ultimate Precise Alignment Page 69 March 2004 106 ðQ i9œ dwelling unit would need to be removed to accommodate the proposed widening of Tassajara Road. One family would need to be displaced to implement the proposed project. Purchase of the dwelling the property and, if necessary, payment of relocation costs by the City of Dublin would reduce this impact to a less-than-significant level. Alternatively, relocation of the dwelling on the site would also reduce this impact to a less-than-significant level. 13. Public Services Environmental Setting The following provide essential services to the community: · Fire Protection. Fire protection services are provided by the Alameda County Fire Department, which is the contract fire agency for the City of Dublin, The Deparhnent provides fire suppression, emergency medical response, fire prevention, education, building inspection services and hazardous material control. · Police Protection: Police and security protection is provided by the Alameda County Sheriff, on a contract basis to the City of Dublin, which maintains a 24-hour security patrol throughout the community, Other services provided include crime prevention, investigation services, youth services and traffic control. · Schools. The Dublin Unified School District provides K-12 educational services to the community, · Maintenance, Maintenance of streets, roads and other governmental facilities are the responsibility of the City of Dublin, · Solid Waste: Solid waste service is provided by the Dublin/ Livermore Disposal Company, which provides residential and commercial solid waste and recycling pick-up, Project Impacts a) Fire protection? NI, Approval of the proposed project would have no impact to fire protection since no habitable structures or improvements would be constructed that would require Fire Department service. Implementation of the proposed project would have a beneficial impact with regard to fire service, since improved access would be provided to this portion of Eastern Dublin, b) Police protection? NI. Since no habitable structures or other facilities would be constructed that would require additional police services, there would be no impacts with regard to the Police Department. c) Schools? NI. There would be no impact to school service should the proposed project be approved since no new residential development would occur. Potential Page 70 March 2004 City of Dublin Initial Studyrrassajara Road/Fallon Road Ultimate Precise Alignment \ 0' œ 5b -;;.os- indirect impacts of establishing the ultimate precise alignment for the two roadways in terms of inducing additional housing development has been addressed in the Eastern Dublin EIR. d) Other governmental service, including maintenance of public facilities? NI. There would be no impact to maintenance services provided by the City, since the proposed widened roads would be constructed to City of Dublin standards that would minimize the need for maintenance for a number of years. e) Solid waste generation? LS. Less-than-significant impacts regarding generation of solid waste is anticipated since construction of the project would generate additional quantities of construction debris. In the long-term, no additional solid waste would be generated, since no habitable facilities would be built. 14. Recreation Environmental Setting The nearest City of Dublin community park to the project site is Emerald Park, located on the southwest corner of Tassajara Road and Gleason Drive, just south of the project area, Emerald Park consists of approximately 23 acres of land and provides a wide range of recreation and open space amenities for Dublin residents, The Eastern Dublin Specific Plan and General Plan designates an 11,8-acre . neighborhood park and 2,8-acre neighborhood square on the west side of Tassajara Creek on the Wallis property, An application has been filed with the City of Dublin to amend the Eastern Dublin Specific Plan and General Plan to provide a 5-acre neighborhood park on the Wallis property and to delete he neighborhood square land use designation. This application is currently pending. Other recreation facilities exist or are planned in or near the project area by the East Bay Regional Park District. The District presently owns property on the west side of Tassajara Road in the southerly portion of the project area immediately adjacent to Tassajara Creek. The District has long-term plans to incorporate this property into a regional recreational trail that is tentatively planned to run from the intersection of Dublin Boulevard and Tassajara Creek on the south along Tassajara Creek and then along the easterly boundary of Parks RFTA and into Contra Costa County to the north, Project Impacts a) Would the project increase the use of existing neighborhood or regional parks? LS. Approval and construction of the proposed project would not directly increase the use of nearby City or regional recreational facilities, since it would not include increasing the local population, Indirectly, widening of Tassajara Road would increase access potential to park facilities in Eastern Dublin. However, this would be a less-than-significant impact, since the proposed roadway widening has been planned as part of the Eastern Dublin Specific Plan and General Plan Amendment. The inclusion of a planned pedestrian overcrossing structure would allow for safe access betvveen future residents east of Tassajara Road and future parks that are planned to be built west of Tassajara Road. City of Dublin Initial Studyrrassajara Road/Fallon Road Ultimate Precise Alignment Page 71 March 2004 107 ~ dW b) Does the project include recreational facilities or require the construction of recreational facilities? NI. Although the provision of additional park land is not required, since the project would not include habitable structures that would increase the local population, the proposed ultimate rights-of-way do include a combination sidewalk/ pathway along the sides of the roadways that would expedite pedestrian access to recreational facilities. 15. Transportation/Traffic Environmental Setting Tassajara Road is a major road in this portion of Alameda and Contra Costa County. It extends north from Pleasanton (where it is called Santa Rita Road), past the 1-580 freeway, through the project site and then north into Contra Costa County, where it becomes Camino Tassajara. The road has been improved through the project area with two travel lanes (one north, one south) where it serves rural residential and agricultural uses. South of the project site, Tassajara Road has been widened to four lanes and serves newer single-family development, higher density residential complexes and commercial centers, Tassajara Road has east- and west-bound on- and off-ramps at the 580 freeway. Fallon Road is included in the Eastern Dublin General Plan and Specific Plan as an east- west arterial roadway near Tassajara Road that transitions to a north-south road east of the project area, Fallon Road presently has east-and west-bound ramps at the 1-580 freeway. The most recent data available from the City of Dublin Public Works Department indicate that the current Average Daily Trip volumes on Tassajara Road are 14,500 vehicles, which was recorded in February, 2003 on Tassajara Road just north of Gleason Drive, Future traffic projections along Tassajara Road estimate 44,100 vehicles at buildout of the Eastern Dublin Specific Plan, Project Impacts a) Cause an increase in traffic which is substantial to existing traffic load and street capacity? NT, This project is being proposed in response to increased development in the Eastern Dublin and southern Contra Costa County area. It is proposed to carry additional traffic that would be generated from land uses anticipated in the Eastern Dublin Specific Plan and General Plan and other land use plans adopted by Contra Costa County, No impacts regarding traffic increases are therefore anticipated, b) Exceed, either individually or cumulatively, a LOS standard established by the County CMA for designated roads)? NT. Since no vehicular-generating development is proposed as part of the project there would be no impact to CMA routes. c) Change in air traffic patterns? NT. The proposed project would have no impact on air traffic patterns, since it involves an upgrade to an existing major roadway, City of Dublin Initial StudyfTassajara Road/Fallon Road Ultimate Precise Alignment Page 72 March 2004 \ Dß Db dD.)" d) Substantially increase hazards due to a designfeature or incòmpatible use? LS/M. No permanent changes are proposed to the street system, other than widening and installation of related improvements. However, temporary construction activities could partially block existing private driveways along Tassajara Road during construction periods. This could result in a potentially significant impact due to disruption of local traffic patterns, especially during peak hour traffic periods, and inconvenience to local residents. The following mitigation measure is therefore recommended to reduce this potential impact to a less-than-significant level: Mitigation Measure 36, A Traffic Construction Management Plan shall be prepared by the City of Dublin Public Works Deparbnent prior to commencement of construction, identifying specific methods to be undertaken to ensure that access to abutting properties is maintained for residents and emergency vehicles. The Management Plan shall be reviewed and approved by the Alameda County Fire Department and Dublin Police Services Department. Key elements of the Traffic Construction Management Plan shall be incorporated into project plans and specifications for implementation by the project contractor. e) Result in inadequate emergency access? LS/M. Short-term access to abutting properties may be restricted near project construction zones. Adherence to Mitigation Measure 11, above, would ensure that access would remain adequate to emergency service providers. f) Inadequate parking capacity? NI. No impacts to existing parking patterns are required since no development is proposed as part of the project, g) Hazards or barriers for pedestrians or bicyclists? LS, Preliminary project plans indicate that sidewalks would be constructed adjacent to the widened roadways to allow for access by pedestrians and bicyclists. Proposed construction of a pedestrian bridge over Tassajara Road would minimize future barriers to pedestrian use between future residential development east of Tassajara Road and planned City of Dublin parks west of Tassajara Road. Less-than-significant impacts would therefore result. 16. Utilities and Service Systems Environmental Setting The project area is served by the following service providers: · Water supply: Dublin San Ramon Services District (DSRSD) and Zone 7 · Sewage collection and treatment: Dublin San Ramon Services District (DSRSD) · Storm drainage: City of Dublin (local facilities), Zone 7 (regional facilities) · Electrical and natural gas power: Pacific Gas and Electric Co. City of Dublin Initial Studyrrassajara Road/Fallon Road Ultimate Precise Alignment Page 73 March 2004 \ ûq t5b :;).05'- . Communications: Southwestern Bell (formerly Pacific Bell). Project Impacts a) Exceed wastewater treatment requirements of the RWQCB? NT. The proposed project involves establishing an ultimate precise alignment for Tassajara Road and a portion of Fallon Road and would not generate any quantity of wastewater. No impacts are therefore anticipated. b) Require new water or wastewater treatment facilities or expansion of existing facilities? NT. Since the proposed project does not include habitable building space, no new water or wastewater treatment facilities would be needed to serve the widened road. No impacts are anticipated. c) Require new storm drainage facilities? LS, New storm drain facilities would be needed to accommodate incrementally increased quantities of stormwater runoff from the widened roadways, New storm drain outfalls are also proposed into adjacent surface bodies of water, As part of the project and as described in the Biological Resources section of this Initial Study, the City will obtain necessary permits from applicable state and federal regulatory agencies, Less-than-significant impacts would therefore result. d) Are sufficient water supplies available? LS, Minor and less-than-significant additional water supplies are necessary to construct the proposed roadway widening. Water supplies would be required for roadway cleaning purposes and for general construction, e) Adequate wastewater capacity to serve the proposed project? LS, See response to lIa," above, e, f) Solid waste disposal? LS, Small quantities of solid waste would be generated by the implementation of the proposed project, which would be construction debris. This amount of solid waste is anticipated to be less-than-significant and can be accommodated in the local sanitary landfill, g) Comply with federal, state and local statutes and regulations related to solid waste? NT, The existing service provider will ensure adherence to federal, state and local solid waste regulations should the proposed reorganization be approved, No impacts are anticipated in this regard. 17. Mandatory Findings of Significance a) Does the project 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 of 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? No. The preceding analysis indicates that the proposed project, with adherence to City of Dublin Initial Studyrrassajara Road/Fallon Road Ultimate Precise Alignment Page 74 March 2004 \\0 ~ wS- mitigation measures specified in this Initial Study, will not have a significant adverse impact on overall environmental quality, including biological resources or cultural resources. b) Does the project 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 past projects, the effects of other current projects and the effects of probable future projects). No the proposed project involves widening of an existing arterial roadway in the Eastern Dublin area. The project has been designed to accommodate new growth consistent with the City's adopted Eastern Dublin Specific Plan and General Plan Amendment and adopted land use plans adopted by Contra Costa County, Cumulative effects of constructing the project have been addressed in the Eastern Dublin ElR, adopted by the City of Dublin in 1994. c) Does the project have environmental effects which will cause substantial adverse effects on human beings, either directly or indirectly? No. No such impacts have been discovered in the course of preparing this Initial Study. City of Dublin Initial StudyfTassajara Road/Fallon Road Ultimate Precise Alignment Page 75 March 2004 \ \ \ Ob -z.D5" Initial Study Preparers Jerry Haag, Urban Planner, project manager Malcolm Sproul, LSA Associates, biological resources Jane Maxwell, report graphics Agencies and Organizations Consulted The following agencies and organizations were contacted in the course of this Initial Study: City of Dublin Melissa Morton, P .E., Public Works Director Lee Thompson, P.E., Public Works Director (former) Michael Stella, P.E., Senior Civil Engineer Mark Lander, P,E., Consulting Engineer Ray Kuzbari, Senior Traffic Engineer Jen Ram, AlCP, Planning Manager Janet Harbin, Senior Planner Alameda County Planning Department Shareen Bausnia, Planning Technician East Bay Regional Park District Steve Fiala, Trails Specialist Larry Tong, Planning Manager California Department of Toxic Substances Control (DTSC) Website References Dublin General Plan, City of Dublin, Updated through 11/5/02 Eastern Dublin General Plan, Wallace Roberts & Todd, 1993 Eastern Dublin Specific Plan and General Plan Environmental Impact Report, Wallace Roberts & Todd, 1994 Eastern Dublin Comprehensive Stream Restoration Program, Sycamore Associates, 1996 Eastern Dublin Scenic Corridor Policies and Standards, David Gates & Associates, 1996 East County Area Plan, a Portion of the Alameda County General Plan, Alameda County Planning Department, Amended through November, 2000. City of Dublin Initial StudylTassajara Road/Fallon Road Ultimate Precise Alignment Page 76 March 2004 ) I'd- cro W5 Tassajara Road Widening Biological Resources Report LSA Associates, December, 2003 City of Dublin Initial StudylTassajara Road/Fallon Road Ultimate Precise Alignment Page 77 March 2004 ,\~ Ob wS'" List of Mitigation Measures Mitigation Measure 1. Visual impacts of extensive grading shall be reduced by sensitive engineering design, by using gradual transitions from graded areas to natural slopes and by revegetation, (Eastern Dublin EIR Mitigation Measure 3.8/4,0) Mitigation Measure 2. 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. (Eastern Dublin EIR Mitigation Measure 3,8/4.1) Mitigation Measure 3, 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, (Eastern Dublin EIR Mitigation Measure 3,8/4,4) Mitigation Measure 4, 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 wherever feasible. (Eastern Dublin EIR Mitigation Measure 3,8/4.5) Mitigation Measure 5. Street lights installed as part of the road widening plan shall be equipped with cut-off lenses to prevent spill over of light beyond the roadway, Lighting levels shall be limited to the minimum level of illumination.needs for safety purposes, Mitigation Measure 6. Future precise road improvement plans and specifications shall include comprehensive dust control measures for all constructiqn projects, including but not limited to watering of construction sites, daily clean up of dust and mud, revegetation of graded areas and similar steps, (EDSP EIR Mitigation Measure 3,11/1.0) Mitigation Measures 7. Future precise road improvement plans and specifications shall include scheduling of construction of activities during non-peak traffic times, installation of emission controls on construction vehicles and similar steps, (EDSP,EIR Mitigation Measures 3,11/2,0-4,0) Mitigation Measure 8. Pre-construction surveys to determine if western burrowing owl, are present within the area of disturbance of the road widening should be conducted by a qualified biologist no more than 30 days prior to the initiation of any construction related activities, If burrowing owls are observed on or near the project site during these surveys, the project will implement an exclusion zone around the nest location, Exclusion zones should be 160 feet during the non-breeding season of September I-January 31, Passive relocation of owls that includes the placement of one-way doors over burrow entrances, allowing owls to exit but not return, may be used at that time, During the breeding season of February I-August 31, exclusion zones should be at least 250 feet from occupied burrows. All project related activity will occur outside of the exclusion area until the young have fledged (California Department of Fish and Game, 1995), If owls are detected breeding within the construction zone, 6.5 acres of burrowing owl habitat City of Dublin Initial StudyfTassajara Road/Fallon Road Ultimate Precise Alignment Page 78 March 2004 I I I I I I I I I I I I I I I I I I I 1\3 (þ)~2aÇ shall be preserved for each active nest detected, The location 'of the preserved habitat shall be determined in consultation with the CDFG. To the fullest extent possible, mitigation areas shall be located on the adjoining property where owl habitat is identified, Mitigation Measure 9, Surveys to determine if California tiger salamander are present within the area of disturbance of the road widening should be conducted by a qualified biologist. These surveys should be conducted in accordance with the protocols outlined by the CDFG. If California tiger salamanders are determined to be present, the project will implement a salvage program. The salvage program will include placement of fencing to prevent movement of salamanders into the project site and trapping in the project area to capture salamanders for relocation to off-site locations. The project shall preserve California tiger salamander habitat at a 1:1 (mitigation area: impact area) replacement ratio. All preserved acreage must be protected in perpetuity by designation as permanent open space with a conservation easement placed over it. The location of the preserved habitat will require the approval of the CDFG, CDFG approved mitigation habitat must be secured prior to construction of the bridge, To the fullest extent possible, mitigation areas shall be located on the adjoining property where tiger salamander habitat is identified, Mitigation Measure 10. Pre construction surveys for the presence of San Joaquin kit fox shall be completed as required by the Eastern Dublin Specifi.c Plan EIR. If San Joaquin kit fox are observed on or near the project site during these surveys, consultation with the U,S. Fish and Wildlife Service will be initiated and the project will incorporate the Terms and Conditions contained in the Biological Opinion. Mitigation Measures 3.7/18,0 through 19,0 as set forth in the Eastern Dublin EIR shall also be implemented. Mitigation Measure 11. Measures shall be implemented to ensure California red-legged frogs and western pond turtle are not present within the disturbance area during development. Any project related work in or along the tributaries shall be restricted to the period when these features are dry (usually from mid-summer through October), A USFWS and CDFG approved biologist shall conduct pre-construction surveys to determine if California red-legged frog or western pond turtle are present within this area within three days prior to any construction activities, If any red-legged frogs are found, the biologist shall contact the USFWS to determine if moving them is appropriate, Immediately following the preconstruction survey, all portions of the project site proposed for grading shall be separated from open space areas by fencing appropriate to prevent California red-legged frogs and western pond turtle from entering the development area, A second survey shall be conducted within the fenced area no earlier than 24 hours before the onset of activities to ensure no California red- legged frogs or pond turtles are entrapped in the construction area by the fence, Any western pond turtles found within this area will be captured and relocated downstream. If relocation of red-legged frogs is allowed by the USFWS, any California red-legged frogs captured will be relocated downstream, Mitigation Measure 12. All trees within the construction zone which will need to be removed for road widening should be cut during the non-nesting season (August 1 to City of Dublin Initial StudyfTassajara Road/Fallon Road Ultimate Precise Alignment Page 79 March 2004 I I I I I I I I' I I I I I I I I I I I Ilg.(b)ÚÒ20Ç January 30) in the year prior to when road widening is expected to occur. 1£ tree removal cannot occur as outlined above and must take place when road widening occurs then pre-construction surveys for active nests will be required. Surveys to deterniine the presence of raptor nests should be conducted by a qualified biologist no more than 30 days prior to the initiation of any construction related activities, 1£ raptors are observed nesting on or near the project site during these surveys, exclusion zones will be established around all active nests, The project will consult with CDFG to determine the size of the exclusion zone, usually 100-300 feet, around the nest location. All project related activity will occur outside of the exclusion area until the young in the nest have fledged, Mitigation Measure 14. The project will determine the size of the two populations and preserve habitat that supports a known population of Congdon's tarplant at an acreage ratio of 1:1 (preserved: impacted), Mitigation Measure 15, a) Prior to initiation of work in the northern tributary a Creek Restoration Plan will be prepared which specifies how the disturbed reach of the stream will be placed in a stable condition and its banks revegetated with riparian species native to this tributary or Tassajara Creek. This plan will require the review and approval of the Corps, DFG and RWQCB, . c) Individual grade, control structures will have vertical drops of no more than two feet or cascade drops of no more than three feet at any specific location to allow for unimpeded movement of aquatic species, c) All potentially jurisdictional areas located adjacent to the project area will be avoided during construction and no fill will be allowed to enter these areas. Exclusion fencing (construction or silt fencing) will be installed at the boundary between these features and the active project area to protect them and to delimit the boundary of construction and heavy equipment activity, A biological monitor shall oversee the installation of the fencing and periodically monitor the development sites to document avoidance of the off-site areas, The monitor will provide a report to the Oty and other agencies documenting the avoidance during construction, d) During project construction, no material shall be allowed to enter, or be stored in, any off-site potentially jurisdictional areas. Project related dirt and other material shall be kept at least 50 feet far away from off-site drainage features. All equipment washing will occur downslope from off-site drainage features, Mitigation Measure 16. Final roadway construction plan(s) and specifications shall require mechanical or hand subsurface testing on all locations of prehistoric resources to determine the presence or absence of midden deposits, (Eastern Dublin EIR Mitigation Measure 3,9/1.0) Mitigation Measure 17, Final roadway construction plan(s) and specifications shall requires all locations containing either midden components or concentrations of cultural materials on the surface to be recorded on State of California survey forms, (Eastern Dublin EIR Mitigation Measure 3,9/2,0,) Page 80 March 2004 City of Dublin , Initial Studyffassajara RoadlFallon Road Ultimate Precise Alignment I\~ Db zr£' Mitigation Measure 18, Final roadway construction planes) and specifications shall require evaluative testing if proposed development would directly or indirectly impact recorded and mapped location of resources. (Eastern Dublin EIR :Mitigation Measure 3.9/3,0) Mitigation Measure 19. Final roadway construction planes) and specifications shall require a qualified archeologist to develop protection programs for significant resources whose conditions would be altered by proposed development. (Eastern Dublin EIR :Mitigation Measure 3,9/4,0) Mitigation Measure 20. Final roadway construction planes) and specifications shall require grading and construction to cease in the event that historic or prehistoric resources are discovered during such activitie~. (Eastern Dublin EIR :Mitigation Measure 3,9/5.0) Mitigation Measure 21. Setbacks shall be established from unstable and potentially unstable landfonns as well as use of appropriate project engineering design techniques to ensure safety, (Eastern Dublin EIR :Mitigation Measure 3,6/2.0) Mitigation Measure 22. Appropriate grading and design shall be used to completely remove unstable and potentially unstable materials in hillside development areas, (Eastern Dublin :Mitigation Measure 3.6/3.0) Mitigation Measure 23. Engineering techniques and improvements, such as retention structures, drainage improvements, properly designed keyways and adequate compaction shall be used to improve the stability of fill areas and to reduce seismically induced fill settlement. (Eastern Dublin EIR :Mitigation Measure 3.6/4,0 and 5,0) Mitigation Measure 24. Roads, structural foundations, utilities shall be designed in such a manner as to accommodate estimated settlement without failure, especially across areas of cut and fill, (Eastern Dublin :Mitigation Measure 3.6/6.0) Mitigation Measure 25, Grading activities shall be timed to avoid the rainy season as much as possible and that interim erosion control measures be taken to control runoff and minimize erosion, (Eastern Dublin EIR :Mitigation Measure 3,6/27,0) Mitigation Measure 26. Long-tenn erosion and sedimentation shall be reduced through appropriate design, construction and continued maintenance of surface and subsurface drainage. Future road improvement planes) and specifications for this project incorporate erosion control plans for all aspects of the project that would involve trenching, excavation or stockpiling of dirt. The planes) shall be prepared by a registered civil engineer and be consistent with applicable City of Dublin and Regional Water Quality Control Board guidelines and standards. (Eastern Dublin EIR :Mitigation Measure 3.6/28.0) Mitigation Measure 27, A design-level geotechnical investigation shall be prepared to characterize site-specific soils and bedrock conditions and to fonnulate specific design criteria for development projects, (Eastern Dublin EIR :Mitigation Measure 3.6/14.0) City of Dublin Initial Studyrrassajara Road/Fallon Road Ultimate Precise Alignment Page 81 March 2004 1\6 ~ zoS- Mitigation Measure 28, Specific measures shall be included in future specific roadway plan(s) and specifications to control moisture in the soil to reduce impacts from expansion soil and rock. (Eastern Dublin ErR Mitigation Measure 3.6/15.0) Mitigation Measure 29. Appropriate foundation and pavement design shall be employed, based on a site-specific geotechnical study, for new structures to minimize effects of expansive soil and rock. (Eastern Dublin ErR :Mitigation Measure 3.6/16.0) Mitigation Measure 30. The proposed project shall incorporate Best Management Practices to minimize stormwater pollution. (Eastern Dublin EIR :Mitigation Measure 3.5 / 53,0) Mitigation Measure 31. The proposed project shall meet all water quality standards set forth in the City's NPDES Permit. (Eastern Dublin ErR :Mitigation Measure 3,6/54,0) Mitigation Measure 32. The proposed project shall meet water quality standards imposed under the Alameda County Clean Water Program, (Eastern Dublin ErR Mitigation Measure 3.6/55.0) Mitigation Measure 33. Storm drain outfall structures installed as part of the proposed project shall be equipped with storm drain filters as approved by the Dublin Public Works Department. - Mitigation Measure 34. Construction Management Plan(s) shall be filed with the City of Dublin Public Works Department prior to commencement of any construction. The Plan(s) shall identify specific measures to be taken to minimize short-term. noise on local resident, including but not limited to limitations on hours of operation for construction, including unloading of material, equipment warm up and tune-up times, and a requirement that all gasoline-powered equipment be equipped with mufflers. (Eastern Dublin ErR :Mitigation Measure 3.10/4,0) Mitigation Measure 35, Requires compliance with local noise standards relating to construction activities, including limitation on hours of construction operation. (Eastern Dublin ErR :Mitigation Measure 3,10/5.0) Mitigation Measure 36, A Traffic Construction Management Plan shall be prepared by the City of Dublin Public Works Department prior to commencement of construction, identifying specific methods to be undertaken to ensure that access to abutting properties is maintained for residents and emergency vehicles. The Management Plan shall be reviewed and approved by the Alameda County Fire Department and Dublin Police Services Department. Key elements of the Traffic Construction Management Plan shall be incorporated into project plans and specifications for implementation by the project contractor. City of Dublin Initial StudyfTassajara Road/FallonRoad Ultimate Precise Alignment Page 82 March 2004 City of Dublin Initial Studyfrassajara Road/Fallon Road Ultimate Precise Alignment \\~ D02DS- LSA Report Page 83 March 2004 ~ l1 bb zo5 LSA ASSOCIATES, INC, FEBRUARY 200. TASSAJARA ROAD WIDENING EIR IV, SETTING, IMPACTS AND MITIGATION MEASURES I. BIOLOGICAL RESOURCES I. BIOLOGICAL RESOURCES This section of the report presents information on biological resources found on and in the Project vicinity. The setting section of this chapter describes the habitats and biological resources on the site. Information in this section is used to evaluate the potential impacts of the Project with respect to the significance criteria set forth in the Impacts and Mitigations section, 1. Methods Prior to conducting field work, LSA biologists searched the California Natural Diversity Data Base (CNDDB) (CDFG 2001) and the CNPS Electronic Inventory (2001) to locate records of special status species and sensitive cornmunitieslhabitats in the general region of East Dublin. Using information from these sources and the biologist's knowledge of plants and wildlife in the Livermore/Amador Valley, lists of potentially occurring special status species and sensitive habitats were developed. LSA biologist David Muth visited the Tassajara Road widening project area on September 25,2002. LSA botanists Eva Buxton and Greg Gallaugher visited the site on November 19, 2002. All three walked the entire activity area mapping habitats and searching for sensitive plant cornmunitieslhabitats and evidence of special status species or habitats that could support such species. Plants and animals observed during the survey were recorded in field notes. 2. Regulatory Context Federal Endangered Species Act. The federal Endangered Species Act (FESA) protects listed species from harm or "take" which is broadly defmed as to harass, harm, pursue, hunt, shoot, wound, kill, ttap, capture, collect, or attempt to engage in any such conduct. Take can also include habitat modification or degradation that results in death or injury to a listed species. An activity can be defmed as "take" even if it is unintentional or accidental. Listed plant species are provided less protection than listed wildlife species. Listed plant species are legally protected from take under FESA if they occur on federal lands or if the project requires a federal action, such as a wetland fill permit. The U.S, Fish and Wildlife Service (USFWS) has jurisdiction over federally-listed threatened and endangered species under the FESA. The USFWS also maintains lists of 'proposed' and candidate species that are not legally protected under the FESA, but which may become listed in the near future and are often included in their review of a project. California Endangered Species Act. The California Endangered Species Act (CESA) prohibits the take of any plant or animal listed or proposed for listing as rare (plants only), threatened, or endangered. In accordance with the CESA, California Department ofFish and Game (CDFG) has jurisdiction over state-listed species (California Fish and Game Code 2070). Additionally, the CDFG maintains lists of "species of special concern" that are defined as species that appear to be vulnerable to extinction because of declining populations, limited ranges, and/or continuing threats. California Environmental Quality Act. Section 15380(b) of the California Environmental Quality Act (CEQA) Guidelines provides that a species not listed on the federal or state lists of protected species may be considered rare or endangered if the species can be shown to meet certain specified criteria. These criteria have been modeled after the definitions in FESA and CESA and the section of the 1 \\RIC06\PROJ\CDU730\TassRdWidening\4i-BI02,doc (02106/04) \¡ß DÒ7J)5 LSA ASSOCIATES, INC, FEBRUARY HO+ TASSAjARA ROAD WIDENING ErR IV, SETTING, IMPACTS AND MITIGATION MEASURES !. BIOLOGICAL RESOURCES California Fish and Game Code dealing with rare or endangered plants or animals. This section was included in the guidelines primarily to deal with situations in which a public agency is reviewing a project that may have a significant effect on a species that has not yet been listed by either the USFWS or CDFG. Clean Water Act. Under Section 404 of the Clean Water Act, the U.S. Army Corps of Engineers (Corps) is responsible for regulating the discharge of fill material into waters of the United States. Waters of the U.S. and their lateral limits are defined in 33 CFR Part 328.3 (a) and include streams that are tributary to navigable waters and their adjacent wetlands. Wetlands that are not adjacent to waters of the U.S. are tenned "isolated wetlands" and, depending on the circumstances, may also be subject to Corps jurisdiction. In general, a Corps permit must be obtained before placing fill in wetlands or other waters of the U.S. The type of permit depends on the acreage involved and the purpose of the proposed fill. Minor amounts of fill can be covered by a Nationwide Permit. An Individual Permit is required for projects that result in more than a "minimal" impact on jurisdictional areas. Individual Permits require evidence that jurisdictional fill has been avoided to the extent possible and a review of the project by the public. California Water Quality and Waterbody Regulatory Programs. Pursuant to Section 401 of the federal Clean Water Act, projects that are regulated by the Corps must obtain water quality certification from the Regional Water Quality Control Board (RWQCB). This certification ensures that the project will uphold state water quality standards. The RWQCB may impose mitigation requirements even if the Corps does not. The CDFG exerts jurisdiction over the bed and banks of watercourses and waterbodies according to provisions of Section 1601 to 1603 of the Fish and Game Code. The Fish and Game Code requires a Streambed Alteration Permit for the fill or removal of material within the bed and banks of a watercourse or waterbody. Other Statutes, Codes, and Policies. The federal Migratory Bird Treaty Act (16 U.S,C., Sec. 703, Supp. I, 1989) prohibits killing, possessing, or trading in migratory birds except in accordance with regulations prescribed by the Secretary of the Interior. This act encompasses whole birds, parts of birds, and bird nests and eggs. Most native bird species on the project site are covered by this Act. The California Native Plant Society (CNPS), a non-governmental conservation organization, has developed lists of special status plant species of concern in California (Tibor 2001). Vascular plants included on these lists are defined as follows: List 3 List 4 Plants considered extinct. Plants rare, threatened, or endangered in California and elsewhere. Plants rare, threatened, or endangered in California but more cornmon elsewhere. Plants about which more infonnation is needed - review list. Plants of limited distribution - watch list. List 1A List 1B List 2 \\RlC06\PROJ\CDU730\TassRdWidening\4i-BI02,doc (02/06/04) 2 \ \ q U[)-z.oS- TASSAJARA ROAD WIDENING EIR IV, SETTING, IMPACTS AND MITIGATION MEASURES I. BIOLOGICAL RESOURCES LSA ASSOCIATES. INC, FEBRUARY 200+ Although the CNPS is not a regulatory agency and plants on these lists have no fonnal regulatory protection, plants appearing on List 1B or List 2 are, in general, considered to meet CEQA's Section 15380 criteria and adverse effects to these species are considered "significant". a. Existing Conditions. Large portions of the Tassajara Road widening project site were graded over 30 years ago for the existing Tassajara Road roadway. Grading included removing material trom high ground areas to lower them and the placement of fill in low areas fonning a relatively level strip of roadway that was paved to a width of approximately 25 feet. Tassajara Road is a well traveled, heavily used road connecting developed portions of southern Contra Costa County to Interstate 580. The portions of the right-of-way that are graded, but not paved, as well as the adjacent ungraded portions of the site, have been heavily disturbed by road construction and maintenance, livestock grazing, and the placement of spoils material. These undeveloped areas support, for the most part, ruderal and non-native grassland plant species. (1) Vegetation and Habitats. Vegetation in the portions of the road widening area that have not previously been disturbed is best described as a mix ofruderal and non-native grassland. Two tributaries to Tassajara Creek cross the road widening project area and contain vegetation best described as riparian. Non-native grassland and ruderal plant communities. The project site passes through several privately held parcels of land, each showing varying degrees of disturbance. Most of the lands on these parcels have been fenced to contain livestock. The fencing is in various stages of decay, removal, or replacement. Grazing intensity varies trom heavy to light. The historic grazing on these lands has fostered the removal of native grasses and forbs that have been replaced by introduced annual grasses and introduced annual forbs. The majority of the undeveloped portions of the project area are dominated by introduced annual grass species including wild oats (Avena sp), ripgut brome (Bromus diandrus), and foxtail barley (Hordeum murinum). A number ofruderal introduced weed species, such as yellow-star thistle (Centaurea solstitialis), Russian thistle (Salsola tragus) and bindweed (Convolvulus arvensis), are also present in this vegetation type. The proportion ofruderal plants to non-native grasses in the activity area appeared to be 50/50. Along both sides of the existing roadbed area, there is a small strip of land located between the paved roadway and the fenced private lands. This strip was originally disturbed during road grading and includes'areas that were cut or filled to level the roadway, This strip appears to be fallow although there was evidence that it is occasionally sprayed to control weeds. The original and continued disturbance, combined with the exclusion of livestock, has again favored weedy species of non-native grasses and ruderal vegetation. Tall ruderal species such as Italian thistle (Carduus pycnocephalus) and black mustard (Brassica nigra) dominated the vegetation in this strip. The lack of grazing has also pennitted several trees such as valley oak (Quercus lobata) and almond (Prunus dulcis) to establish. One portion of private land in the project area on the west side of Tassajara Road has been used to stockpile spoils material. The elevation of this site has been raised two to four feet and the spoils material has covered the original vegetation growing on the site. Ruderal plant species similar to those mentioned above dominate this site. 3 \\RlC06\PROJ\CDU730\TassRdWidening\4i-BI02.doc (02/06/04) LSA ASSOCIATES, INC, FEBRUARY 200+ I~O ~ 205' TASSAjARA ROAD WIDENING EIR IV, SETTING, IMPACTS AND MITIGATION MEASURES I. BIOLOGICAL RESOURCES Riparian. Two tributaries to Tassajara Creek cross the project site. The northern most tributary is located approximately a quarter of a mile south of the Contra Costal Alameda county line. The upstream portion of this tributary, east of Tassajara Road, has been slightly downcut so that the banks are steeply rounded and approximately 10 feet high. Valley oaks and willows (Salbe sp.) grow along the banks and at the edge of the channel, which was dry at the time of the site visit. The tributary enters a culvert to cross under Tassajara Road. The portion of the tributary downstream of (to the west of) the road has been severely eroded and has become deeply incised. Banks in this area are very steep extending 20 to 30 feet above the channel bottom. A few small willows were observed growing around a small earthen pool in the channel bottom, otherwise the banks are largely barren. The southern most tributary was also dry, but densely vegetated with riparian tree species. Trees observed included numerous valley oak, willows, and cottonwood (Populus jremontii). The tributary passes under Tassajara Road in a culvert. (2) Wildlife Values. Wildlife associated with the Tassajara Road Widening project site are species such as ground squirrel (Spermophilus beecheyi), black-tailed hare (Lepus califomicus) and morning dove (Zenaida macroura) adapted to dry grassland conditions and generalist species such as Brewer's blackbird (Euphagus cyanocephalus), coyote (Canis latrans), western fence lizard (Sceloporus occidentalis), and racoon (Procyon lotor), that can use a variety of habitat types including disturbed grassland and ruderal areas. A nest typical of those constructed by a small raptor was observed in one of the valley oaks along the existing roadway. No other stick nests were observed. Several raptor species are likely to perch in the on-site or adjacent trees. A red-tailed hawk (Buteojamaicensis) nest is present just outside the project area to the west in a eucalyptus. Many species of raptor forage over the site. Aquatic and semi-aquatic species such as mosquito fish (Gambusia affinis), California roach (Lavinia symmetricus), and western pond turtle (Clemmys marmorata), are likely to occur in and along the tributaries to Tassajara Creek when and where water is present. Many species will use riparian corridors as movement corridors. (3) Sensitive Habitats. The CNDDB reports seven sensitive habitats in the general Dublin/Livennore area; alkali meadow, alkali seep, cis-montane alkali marsh, sycamore alluvial woodland, valley needlegrass grassland, and valley sink scrub. None of these sensitive habitats occur within the Tassajara Road widening area. The parcel ofland located west of Tassajara Road and immediately north of the southern most tributary 0N allis Ranch) may support plants similar to those in alkali meadows. The portions of the parcel in the project site do not meet the criteria for this vegetation type. None of the other habitats have been reported trom or were observed nearby. The two tributaries to Tassajara Creek that cross the project area appear to meet the definition of jurisdictional waters of the United States. No other potential waters or wetlands were observed on the project site. The approximate jurisdictional area is 9,000 square feet (0.21 acres), all of which is located in the two tributaries, (4) Special Status Species. For the purpose of this EIR, special status species are defined as follows: 4 \\RIC06\PROJ\CDU730\TassRdWidening\4i-BI02,doc (02106/04) LSA ASSOCIATES. INC, FEBRUARY 2004 \L,\ ~2DS TASSAJARA ROAD WIDENING EIR IV. SETTING, IMPACTS AND MITIGATION MEASURES I. BIOLOCICAL RESOURCES · Species that are listed, formally proposed, or designated as candidates for listing as threatened or endangered under the Federal Endangered Species Act. · Species that are listed, or designated as candidates for listing, as rare, threatened, or endangered under the California Endangered Species Act. · Plant species on List lA, List lB, and List 2 in the California Native Plant Society's (CNPS) Inventory of Rare and Endangered Vascular Plants of California (Tibor, 2001). · Wildlife species listed by the California Department ofFish and Game (CDFG) as species of special concern, or as protected or fully protected species. · Species that meet the defmition of rare, threatened, or endangered under the California Environmental Quality Act (CEQA). (Under Section 15380 of the CEQA Guidelines, a species not included on any formal list "shall nevertheless be considered to be endangered, rare or threatened if the species can be shown to meet the criteria for listing.") · Considered to be a taxon of special concern by local agencies. Plant Species. Table A presents a list of nineteen special-status plant species considered potentially occurring in the Livermore/Amador Valley vicinity. Fifteen of the species on this list were eliminated from consideration because the necessary habitats that support them were absent from the project area (Tibor, 2000). Possible habitat for caper-fruited tropidocarpum is present. However, the extent of habitat disturbance on the project site, and the fact that this specIes is considered extinct, make its presence so unlikely that it has also been eliminated from consideration, Habitats in the Tassajara Road widening project site are suitable for big tarplant, San Joaquin spearscale, and Congdon's tarplant. The ruderallnon-native grassland located in the undèveloped portions of the site would be considered marginal habitat for these three species. These species were identifiable at the time of the surveys and big tarplant and San Joaquin spearscale were not observed. These two species should be considered unlikely to occur on the site. Congdon's tarplant was observed on the site in a heavily grazed field on the west side of Tassajara Road, just north of the southernmost tributary to Tassajara Creek 0N allis Ranch). Several additional populations were observed in the same field outside of the project area, A small number of Congdon's tarplants (5 or 6) were also observed on the east side of the project at the Silvera Ranch Property, Wildlife Species. Table B presents a list of nineteen special-status wildlife species considered to potentially occur in the Livermore/Amador Valley. Twelve of the species on the list were eliminated from consideration because suitable habitat for them is not present on the site. California horned lark was considered but eliminated as well. California horned lark will nest in short-grass grasslands similar to those present within the road widening project area, but prefer undisturbed sites with greater amounts of suitable habitat present. The project site grasslands are located within several yards of Tassajara Road and California horned larks are also unlikely to nest this close to the road. California tiger salamanders live in rodent burrows or other retreat sites located in grassland habitats. They breed in seasonal ponds and vernal pools. The grasslands within the project boundaries represents suitable habitat for adult California tiger salamanders and burrows suitable for use by this species were observed in several locations along the project alignment. The species is known to breed 5 \\RIC06\PROJ\CDU730\TassRdWidening\4i-BI02,doc (02106/04) LSA ASSOCIATES, INC, FEBRUARY 2004 TASSAJAR: :~WI~~S- IV, SETTING, IMPACTS AND MITIGATION MEASURES !. BIOLOGICAL RESOURCES in ponds in this area of East Dublin. California tiger salamander may live in burrows located in the grasslands along the road corridor or cross the project site while migrating. California red-legged frog and western pond turtle occur in creek habitats similar to those present in the tributaries to Tassajara Creek. Both species have been observed in Tassajara Creek immediately west of the road corridor and California red-legged frog has been reported from upstream locations in both of the two tributaries that cross the project site. The presence of the roadway, and its associated traffic, within the project right of way severely reduces the suitability of the upland communities as potential upland habitat or migration corridors for these two species. California red-legged frog and western pond turtle are likely to use or occupy the sections of the tributaries to Tassajara Creek within the Tassajara Road Widening project site. San Francisco dusky-footed woodrats build stick nests in scrub and forest communities including riparian forests. The dense riparian vegetation located along the southern tributary to Tassajara Creek appears suitable for the San Francisco dusky-footed woodrat. No woodrat nests were observed in the southern tributary riparian vegetation during our site visits. The species is unlikely to be effected by the Tassajara Road Widening project. Suitable nesting habitat is present for white-tailed kite and other nesting raptors. One nest typical of those constructed by smaller sized raptors, such as a kite, was observed in one of the taller trees along the existing roadway. White-tailed kite or other species of rapt or could nest within the project area. Western burrowing owls forage in grassland and ruderal habitats like those along the road widening project area. This species occupies ground squirrel burrows in these habitats, Numerous ground squirrel burrows suitable for use by burrowing owl were observed within the road corridor. These burrows provide suitable habitat for burrowing owl and the presence of this species cannot be ruled out. Bats including pallid bat and Townsend's big-eared bat are known to roost under bridges and culverts. The structure associated with the culvert over the southern tributary to Tassajara Creek may provide suitable habitat for colonies of roosting bats. Several surveys for San Joaquin kit fox have been conducted in the project area. No kit fox or sign of kit fox presence has been detected during these surveys and there are no verified incidental observations of kit fox from the East Dublin area. The likelihood of their presence within the road corridor is very low. The V.S, Fish and Wildlife Service considers the location of the road corridor to be suitable kit fox habitat and potentially occupied by the species. 2. Impacts And Mitigation Measures a. Criteria for Significance. The proposed project would have a significant impact on biological resources if it would: . Substantially diminish habitat for fish, wildlife, or plants or threaten to eliminate a plant or animal community; \\RIC06\PROJ\CDU730\TassRdWidening\4i-BI02,doc (02106/04) 6 LSA ASSOCIATES, INC, FEBRUARY 2004 12'3 Ob W5' TASSAjARA ROAD WIDENINC EIR IV, SETTING, IMPACTS AND MITIGATION MEASURES I. BIOLOGICAL RESOURCES · Substantially affect a rare, threatened, or endangered plant or animal species (including those species that meet the defmition of rare and endangered according to CEQA), or the habitat of such species; · Interfere substantially with the movement of any resident or migratory fish or wildlife species; · Cause a fish or wildlife population to drop below self-sustaining levels; or · Create runoff that significantly impact wildlife habitat. b. Impacts and Mitigation Measures. This section describes potential impacts to biological resources that occur or are likely to occur within the Tassajara Road widening project area. This section also includes the measures necessary to reduce significant impacts to biological resources to a less-than-significant level. (1) Less-than-Significant Biological Resource Impacts. The proposed widening of Tassajara Road will result in loss of about 10.5 acres of non-native ruderal and grassland plant communities. These communities occur on the site as the result of historical disturbance and livestock grazing that allowed introduced non-native plants to colonize and displace the native plant species that existed here. These non-native habitats are presently common throughout the State of California. The loss of non-native grassland as a community in the East Dublin area would not be considered significant. (2) Significant Biological Resource Impacts. The Tassajara Road Widening project could result in significant impacts to 9000 square feet of waters of the US, populations of Congdon's tarplant, California tiger salamander, California red-legged frog, western pond turtle, roosting bats, burrowing owl, and raptors nesting in trees on and adjacent to the project site. These potential impacts will require mitigation to reduce their level to insignificant. Impact BIO-I: Construction of the northern tributary bridge and removal of the existing culvert at this location will require realignment or disturbance of an approximately 700 foot reach of this stream and the installation of a series of stabilized drops in the stream channel, The existing culvert has an approximately 10 foot vertical drop at its downstream end which will need to be replaced by smaller changes in stream elevation over a longer section of stream channel to allow for unimpeded movement of terrestrial and aquatic wildlife, Segments of existing stream bank within this 700 foot reach which are not realigned will be graded to a stable slope angle from their near vertical condition. This work will result in the removal of all riparian vegetation growing within and along this reach of the northern tributary and the temporary dislocation of all wildlife species associated with it. The proposed stream realignment and installation of grade control structures associated with culvert removal and bridge construction in the northern tributary would be a potentially significant impact. This work will be subject to the jurisdiction of the U.S. Army Corps of Engineers (Corps), California Department of Fish and Game (DFG) and Regional Water Quality Control Board (RWQCB) and permits from all of these agencies will be required for this work. Mitigation Measure BIO-Ia: Prior to initiation of work in the northern and southern tributaries a Creek Restoration Plan will be prepared which specifies how the disturbed reach of these streams will be placed in a stable condition and their banks revegetated with riparian species native to this \IRIC06\PROJ\CDU730\TassRdWidening\4i-BI02.doc (02/06/04) 7 LSA ASSOCIATES, INC, FEBRUARY 2004 \ L- '1 U'o W::; TASSAJARA ROAD WIDENING EIR IV, SETTING, IMPACTS AND MITIGATION MEASURES I. BIOLOGICAL RESOURCES tributary or Iassajara Creek. This plan will require the review and approval of the Corps, DFG and RWQCB. Mitigation Measure BIO-Ib: Individual grade control structures will have vertical drops of no more than two feet or cascade drops of no more than three feet at any specific location to allow for unimpeded movement of aquatic species. Mitigation Measure BIO-Ic: All potentially jurisdictional areas located adjacent to the project area will be avoided during construction and no fill will be allowed to enter these areas. Exclusion fencing (construction or silt fencing) will be installed at the boundary between these features and the active project area to protect them and to delimit the boundary of construction and heavy equipment activity. A biological monitor shall oversee the installation of the fencing and periodically monitor the development sites to document avoidance of the off-site areas. The monitor will provide a report to the City and other agencies documenting the avoidance during construction. Mitigation Measure BIO-Id: During project construction, no material shall be allowed to enter, or be stored in, any off-site potentially jurisdictional areas, Project related dirt and other material shall be kept at least 50 feet far away from off-site drainage features. All equipment washing will occur downslope from off-site drainage features. (LIS) Impact BIO-2: Construction of the southern tributary bridge and removal of the existing culvert would require removal of riparian vegetation along an approximately 48 foot reach of this stream, Native trees found at this location consist of coast live oak, valley oak, and arroyo willow. Construction of the bridge precludes tree reestablishment but does provide the opportunity for herbaceous or shrub vegetation to become established, primarily at the upstream and downstream ends of the structure. When complete installation of the bridge will allow unimpeded movement up and down the stream corridor by terrestrial and aquatic wildlife. This work will be subject to the jurisdiction of the Corps, DFG, and RWQCB and permits from all of these agencies will be required for this work. Implement Mitigation Measures BIO-la to Bio-ld. Impact BIO-3: The road alignment encroaches on the upper bank of a portion of a cutoff oxbow bend in the creek channel. The project proposes to install a 160 foot long retaining wall with a maximum height of approximately twelve feet at this location to prevent the need to fill a portion of the oxbow which is a jurisdictional feature. All existing riparian vegetation and this portion of the natural channel bank will be removed at the location of the wall. Construction of the retaining wall is subject to the jurisdiction of the California Department of Fish and Game (DFG) and a Streambed Alteration Agreement will need to be obtained from DFG for its construction. As the retaining wall is a mitigation feature of the project designed to minimize loss of riparian habitat and jurisdictional area no additional mitigation beyond conforming with Measures BIO-la to BIO-ld is necessary for its construction. \\RlC06\PROJ\CDU730\TassRdWidening\4i-BI02,doc (02/06/04) 8 LSA ASSOCIATES, INC, FEBRUARY 200. \ LJ~ 00 ?DS-. TASSA]ARA ROAD WIDENING EIR IV, SETTING, IMPACTS AND MITIGATION MEASURES I. BIOLOGICAL RESOURCES Impact BIO-4: The project will result in the removal of approximately 10.5 acres of grassland habitat for western burrowing owl and California tiger salamander, Construction activity could result in the removal or disturbance of occupied burrows. Mitigation Measure BIO-4a: Pre-construction surveys to detennine if western burrowing owl, are present within the area of disturbance of the road widening should be conducted by a qualified biologist no more than 30 days prior to the initiation of any construction related activities, Ifburrowing owls are observed on or near the project site during these surveys, the project will implement an exclusion zone around the location of all occupied burrows. Exclusion zones should be 160 feet during the non-breeding season of September 1-January 31. Passive relocation of owls that includes the placement of one way doors over burrow entrances, allowing owls to exit but not return, may be used at that time. During the breeding season of February 1-August 31, exclusion zones should be at least 250 feet from occupied burrows. All project related activity will occur outside of the exclusion area until the young have fledged (Califomia Department ofFish and Game, 1995). If owls are detected breeding within the construction zone, 6.5 acres of burrowing owl habitat will be preserved for each active nest detected. The location of the preserved habitat will be detennined in consultation with the CDFG. Mitigation Measure BIO-4b: Surveys to determine if California tiger salamander are present within the area of disturbance of the road widening should be conducted by a qualified biologist. These surveys should be conducted in accordance with the protocols outlined by the CDFG (CDFG,1997). If California tiger salamanders are detennined to be present on the project site, the project will implement the following. A salvage program will include placement of fencing to prevent movement of salamanders into the project site and trapping in the project area to capture salamanders for relocation to off-site locations. The project shall preserve California tiger salamander habitat at a 1: 1 (mitigation area: impact area) replacement ratio, All preserved acreage must be protected in perpetuity by designation as pennanent open space with a conservation easement placed over it. The location of the preserved habitat will require the approval of the CDFG, CDFG approved mitigation habitat must be secured prior to road widening, Mitigation Measure Bio-4c: If San Joaquin kit fox are observed on or near the project site during these surveys, consultation with the U.S. Fish and Wildlife Service will be initiated and the project will incorporate the Terms and Conditions contained in the Biological Opinion, Imt>act BIO-5: Culvert removal and bridge construction could result in the removal or disturbance of California red-legged frog and western pond turtle living within the construction area. These impacts will require the Corps of Engineers to enter into a Section 7 Endangered Species Act consultation with the USFWS as part of the Corps permit process. \\RIC06\PROJ\CDU730\TassRdWidening\4i-BI02.doc (02106/04) 9 \ 7..j,p Ob 2D~ LSA ASSOCIATES. INC. FEBRUARY 200, TASSAJARA ROAD WIDENING EIR IV. SETTING. IMPACTS AND MITIGATION MEASURES J. BIOLOGICAL RESOURCES Mitigation Measure BIO-5a: Implementation of Mitigation Measure BIO-la and BIO-Ib will mitigate for impacts to aquatic habitats for California red-legged frog and western pond turtle. The replacement of the existing culverts with bridges will increase red-legged frog habitat and pond turtle habitat and remove barriers to their movement. Mitigation Measure BIO-5b: The project shall implement measures to ensure California red- legged frogs and western pond turtle are not present within the disturbance area during development. Any project related work in or along the tributaries or adjacent to the ox-bow shall be restricted to the period when these features are dry (usually from mid-summer through October). A USFWS and CDFG approved biologist shall conduct pre-construction surveys to determine if California red-legged frog or western pond turtle are present within these areas within three days prior to any construction activities, If any red-legged frogs are found, the biologist shall contact the USFWS to determine if moving them is appropriate. Immediately following the preconstruction survey, all portions of the project site proposed for grading shall be separated from open space areas by fencing appropriate to prevent California red-legged frogs and western pond turtle from entering the development area. A second survey shall be conducted within the fenced area no earlier than 24 hours before the onset of activities to ensure no California red-legged frogs or pond turtles are entrapped in the construction area by the fence. Any western pond turtles found within this area will be captured and relocated downstream, Ifrelocation of red-legged frogs is allowed by the USFWS, any California red-legged frogs captured will be relocated downstream. Impact BIO-6: The project could result in the removal or disturbance of occupied raptor nests. Mitigation Measure BIO-6: All trees within the construction zone which will need to be removed for road widening should be cut during the non-nesting season (August 1 to January 30) in the year prior to when road widening is expected to occur. If tree removal cannot occur as outlined above and must take place when road widening occurs then pre-construction surveys for active nests will be required. Surveys to determine the presence of raptor nests should be conducted by a qualified biologist no more than 30 days prior to the initiation of any construction related activities. Ifraptors are observed nesting on or near the project site during these surveys, exclusion zones will be established around all active nests, The project will consult with CDFG to detemrine the size of the exclusion zone, usually 100-300 feet, around the nest location. All project related activity will occur outside of the exclusion area until the young in the nest have fledged. Impact BIO-7: The project could result in the removal or disturbance of an occupied bat roost. Mitigation Measure BIO-7: Surveys of the existing culvert structure under the southern-most tributary to Tassajara Creek should be conducted by a qualified biologist no more than 30 days prior to the initiation of any construction related activities to detemrine if roosting bats are present. 10 \\RIC06\PROJ\CDU730\TassRdWidening\4i-BI02,doc (02/06/04) \'L'l ~ 7.05" TASSAJARA ROAD WIDENING EIR IV, SETTING, IMPACTS AND MITIGATION MEASURES I. BIOLOGICAL RESOURCES LSA ASSOCIATES. INC. FEBRUARY 200~ If a bat roost is observed during these surveys, the biologist will determine the type of roost, (daytime, nighttime, or maternity), and construction on and in the immediate vicinity of the crossing will stop until the bats have been excluded ITom the roost site. If a nighttime roost is present, any demolition work on the culvert will be limited to daytime hours when bats are not present. If a daytime roost is present, the roost site will be outfitted with bat exclusion devices that allow bats to exit the roost site, but not return. Removal of the culvert will begin only after the biologist has determined that the roost has been successfully abandoned. If a maternity roost is present, the exclusion zone will remain in place until the young have fledged. After fledging, bats will be excluded and the culvert removed as specified for a daytime roost. Both new bridges should be designed to permit bats to establish roosts, after construction. Impact BIO-8: The project will result in the removal of two small populations of Congdon's tarplant. The population on the Wallis Ranch is located within the proposed roadbed and will be removed as part of project grading. The population on the Silveria Ranch will be removed during grading to reduce landslide potential on adjacent hillsides. Mitigation Measure Bio-8a: The project will determine the size of the two populations and preserve habitat that supports a knO'Wtl population of Congdons tarplant at an acreage ratio of 1 : 1 (preserved: impacted). 11 \\RIC06\PROJ\CDU730\TassRdWidening\4i-BI02.doc (02/06/04) I -zß tf' ZD~ 6 TASSAJARA ROAD WIDENING EIR IV. SETTING, IMPACTS AND MITIGATION MEASURES I. BIOLOGICAL RESOURCES LSA ASSOCIATES. INC, FEBRUARY 200' REFERENCES American Ornithologist's Union (AOU). 1998. Check-List of North American Birds. 7th edition. Allen Press, Lawrence, Kansas. 1998. California Department ofFish and Game. 1995. Staff Report on Burrowing Owl Mitigation. Memo to Div. Chiefs from C.F, Raysbrook, Interim Director, Sacramento, Ca. October 17, 1995. California Department ofFish and Game, 1997. Survey Protocol for California Tiger Salamander (Ambystoma californiense). CDFG Infonnational Leaflet No. 44. .California Department ofFish and Game. 2002. California Natural Diversity Data Base search of the USGS 7.5 minute Altamont, Livennore, Tassajara, and Pleasanton quadrangles. California Native Plant Society. 2002 CNPS Electronic Inventory search of the USGS 7.5 minute Altamont, Livennore, Tassajara, and Pleasanton quadrangles. Tibor, D,P. 2001. Inventory of Rare and Endangered Vascular Plants of California. Special Publication #1, 5th Ed. California Native Plant Society, Sacramento, California. 1994. Williams, D.F. 1986. Mammalian Species of Special Concern in Califomia. Wildlife Management Division Admin. Report 86-1. California Department ofFish and Game. June 1986. 12 \\RIC06\PROJ\CDU730\TassRdWideningl4i-BI02.doc (02106/04) LSA ASSOCIATES. INC, FEBRUARY 200. \ '2. q ~ 71)5' TASSAjARA ROAD WIDENINC EIR IV, SETTINC. IMPACTS AND MITICATIONMEASURES I. BIOLOCICAL RESOURCES Table A - Special-Status Plant Species, Livermore/Amador Valley Suitable Habitat Status * Present Species (Federal/State/CNPS) Habitat Notes on Site Arctostaphylos auriculata --I --/List lB Chaparral and woodlands No Mt. Diablo manzanita usually on siliceous shale soils; blooms January-March Arctostaphylos manzanita ssp --/--/List IB Chaparral and woodlands No laevigata usually in rocky soils; blooms Contra Costa manzanita January-February A triplex joaquiniana --I--/List IB Grasslands and seasonal Yes San Joaquin spearscale wetlands with alkaline soils; blooms April-November Balsamorhiza macrolepis var -I-/List lB Thin, rocky soil on hillsides, No macrolepis sometimes on serpentine, Big-scale balsamroot grasslands and woodlands; blooms March-June Blepharizonia plumosa ssp -/-/List IB Thin soils in grasslands; Yes plumosa blooms July-October Big tarplant Calochortus pulchellus -I-/List IB Openings in chaparral, coastal No Mt. Diablo fairy-lantern scrub, and associated grasslands; blooms April-June Cordylanthus palmatus FE/SE/List lB Alkaline vernal pools and No Pa1mate-bracted bird's-beak seasonal wetlands; blooms May-October Deinandra bacigalupi --/--/List IB Alkaline meadows and seeps; No Livennore tarplant blooms June-October Dirca occidentalis -1-/ListlB Occurs in variety of forest and No Western leatherwood woodland habitats; blooms January-April Eriogonum truncatum --I--/List lA Occurs in sandy soils of No Mt. Diablo buckwheat grassland, scrub and chaparral habitats on hillsides; blooms April-September Helianthella castanea --/--/List IB Thin, rocky soil, grassy No Diablo helianthella hillsides, 500-4,000 feet; foothill woodland, chaparral; blooms April-May P:ICDU730\TassRdWideningIWLivermoreSSSPlant.doc (02106/04) LSA ASSOCIATES, INC, FEBRUARY 200+ TASSAJARA ~~~ID~-z£:; IV, SETTING. IMPACTS AND MITIGATION MEASURES r. BIOLOGICAL RESOURCES Suitable Habitat Status . Present Species (FederallState/CNPS) Habitat Notes on Site Hemizonia parryi ssp. congdonii --I /List IB Alkaline or saline clay soil in Yes Congdon's tarplant annual grasslands in valleys; blooms June-November. Hesperolinon breweri --I /List IB On serpentine soil, chaparral No Brewer's dwarf flax and oak woodland; blooms May-July Malacothamnus hallii --/--/List IB Chaparral habitats; blooms No Hall's bush mallow May-September Phacelia phacelioides --/--/List IB Rocky soils in chaparral and No Mt. Diablo phacelia woodland habitats; blooms April-May Sanicula saxatilis -/-/List IB Rocky soils in chaparral, No Rock sanicle forests, and associated grasslands; blooms April-May Streptanthus albidus ssp --/-/List IB Serpentine soils in grasslands No peramoenus and chaparral; blooms April- Most beautiful jewel flower June Streptanthus hispidus --I /List IB Rocky soils in grasslands and No Mt. Diablo jewel flower chaparral on hillsides; blooms March-June Tropidocarpum capparideum --/--/List lA Alkaline-clay soils in Yes Caper-fruited tropidocarpum grassland, oak woodland on hillsides; blooms March-April 'Status: FE = federally listed as "endangered;" SE = State listed as "endangered;" List 1 = rare and endangered throughout its range (A - presumed extinct; B - still existing). P:\CDU730\TassRdWidening\ WLivermoreSSSPlant.doc (02/06/04) LSA ASSOCIATES, INC, FEBRUARY 20H TASSAJARA R~:W\E~If-D~ IV, SETTING, IMPACTS AND MITIGATION MEASURES !. BIOLOGICAL RESOURCES Table B - Special-Status Wildlife Species, Livermore/Amador Valley Status* Suitable Species Federal! Habitat Notes Habitat Present State on Site Branchinecta lynchi FT/-- Vernal pools and other ponding No V~alpoolfaùyshrimp seasonal vvetlands Ambystoma califomiense C/SC Seasonal ponds; upland Yes California tiger salamander grassland/savanna for estivation Rana aurora draytonii FT/SC Ponds and streams Yes California red-legged frog Rana boylii -/SC Perennial creeks and streams No Foothill yellovv-Iegged frog usually with cobble bottoms Clemmys marmorata -/SC Ponds and streams Yes W est~ pond turtle Masticophis latera lis euryxanthus FT/ST Scrub and associated grasslands No Alameda vvhipsnake Aquila chrysaetos (nesting) BAlSC Large trees for nesting; No Golden eagle Falco peregrinus anatum (nesting) --/SE Nests on cliffs, forages over variety No American peregrine falcon of habitats Accipiter striatus (nesting) -/SC Nests in dense vvoodlands and No Sharp-shinned Havvk forests, forages in same Accipiter coo peri (nesting) -/SC Nests in trees in vvoodlands, No Coopers Havvk forages in a variety of habitats Elanus caeruleus -/CFP Nests in trees and tall shrubs, Yes White-tailed kite forages over a variety of habitats Speotyto cunicularia hypugea (nesting) -/SC Grassland/pastureland; nest in Yes Western burrowing ovvl ground squirrel dens Eremophila alpestržs (nesting) -/SC Large patches of well grazed Yes California horned lark grassland Agelaius tricolor (nesting) -/SC Nests in dense emergent vegetation No Tricolored blackbird Neotoma fuscipes annectens -/SC Riparian, vvoodland, and upland No San Francisco dusky-footed vvoodrat scrub habitats Vulpes macrotus mutica FE/ST Grassland, savanna, and other open No San Joaquin kit fox habitats Antrozous pallidus (roosts) -/SC Roosts in caves, tunnels, buildings; No Pallid bat forages over variety of habitats P:\CDU730\TassRdWidening\WLivemloreSSSWildlife.doc (02/06/04) \ ~'7- õb ZDS~ LSA ASSOCIATES, INC, FEBRUARY 200. TASSAJARA ROAD WIDENINC EIR IV, SETTING, IMPACTS AND MITIGATION MEASURES I. BIOLOGICAL RESOURCES Species Status* Federal/ State Habitat Notes Suitable Habitat Present on Site No Plecotus townsendii townsendii (roosts) Townsend's big-eared bat Eumops perotis califomicus California mastiff bat -/SC Roosts in caves, tunnels, buildings; forages over variety of habitats Roosts in crevices oflarge outcrops; forages over wide variety of habitats No -/SC * FE = federally listed as endangered FT = federally listed as threatened C = candidate for listing as threatened or endangered BA= Federal Bald Eagle Act SE = California listed as endangered ST = California listed as threatened SC = California species of special concern CFP=California fully protected P:\CDU730\TassRdWidening\WLivermoreSSSWildlife.doc (02/06/04) STATE OF CALIFORNIA - THE RESOURCES AGENCY ) 33 t;).... LOS ARNOLD SCH~MENEGGER. Governor DEPARTMENT OF FISH AND GAME POST OFFICE BOX 47 YOLJNTVILLE. CALIFORNIA 94599 .1'( '44-5500 (, ~ May 24, 2004 RECEIVED MAY 2 6 2004 PUBLIC WORKS Mr. Michael Stella City of Dublin Planning Department 100 Civic Plaza Dublin, California 94568 Via Fax (925) 833-6628 Dear Mr. Stella: Tassajara Road/Fallon Road Ultimate Right of Way Alignment Mitigated Negative Declaration Alameda County ( ( Department of Fish and Game· (DFG) personnel have reviewed the subject document, This document identifies the right of way alignment for future expansions of Tassajara Road and Fallon Road. This document is intended to disclose mitigation measures which will be required as each applicant comes to the City of Dublin (City) and is responsible for their individual section of roadway. Most importantly the indirect effects of the road expansion have not been addressed. The most significant impacts from this road project are associated with habitat fragmentation as the road becomes a barrier to dispersal, Habitat fragmentation is cited as a primary reason for decline-in a number of species of concern which are known to occur in the project area. Mortality from vehicle strikes will increase as a result of more and faster traffic. Serious consideration should also be given to the curb and gutter installation. These design features are particularly detrimental to California tiger salamanders which become trapped on the road or are washed down storm drains. The City should design the road to minimize the impacts to the dispersal of species of concern and should require acquisition of property which contributes to preservation of corridors for known populations of the species that will be impacted by the project. Biological Resources It is stated that portions of the right of way have been ( disturbefd. Glra~inghibs.includeld.as a'tdi~tu7bance atcttivity. I~ ( terms 0 ana YZlng a ltat qua lty, l lS lmportan 0 recognlze - /3t-f Db w'::; ,( ( Mr. Michael Stella May 24, 2004 Page 2 that grazing is beneficial to a number of species of concern in the area including San Joaquin kit fox (SJKF), western burrowing owl, and California tiger salamander (CTS). Many species, including those typically associated with aquatic habitat such as California red-legged frog and CTS, use the grasslands as well as the riparian corridors for movement. California red-legged frog and western pond turtle are likely to use or occupy upland areas in the area as well as sections of the tributaries to Tassajara Creek. Project Impacts Mitigation Measure 8 ,( ( The burrowing owl has been identified as a State species of special concern because of declines of suitable habitat and both localized and Statewide population declines. Guidelines for the implementation of the California Environmental Quality Act (CEQA) provide that the species be considered endangered or ~rare" for the purposes of CEQA (Guidelines, Section 15380). CEQA requires a mandatory finding of significance if impacts to rare, threatened, or endangered species are likely to occur. To be legally adequate, mitigation measures must be capable of ~avoiding the impact altogether by not taking certain action or parts of an action," "minimizing impacts by limiting the degree of magnitude of the action or its implementation," "rectifying the impact by repairing, rehabilitating or restoring the impacted environment," "reducing or eliminating the impact over time by preservation and maintenance operations during the life of the action," or ~compensating for the impacts by replacing or providing substitute resources." Mitigation as proposed in the document does not ensure that impacts to burrowing owl will be reduced to a' level of less- than-significant. Pre-construction surveys for burrowing owls should be done in conjunction with protocol level surveys during the wintering and breeding seasons. Pre- construction surveys alone are not recommended by DFG as adequate to determine impacts to western burrowing owl and their habitat. DFG recommends the following requirements in regard to burrowing owl. ( ( /35"~~ (( Mr. Michael Stella May 24, 2004 Page 3 There are two types of mitigation for impacts to burrowing owls, for loss of breeding and foraging habitat and mitigation to avoid ~take" of individual burrowing owls and their nest sites. In order to determine whether or not owls breed on or near a site, a burrowing owl survey should be conducted between April 15 and July 15, according to the guidelines described in the Burrowing Owl Survey Protocol and Mitigation Guidelines. If burrowing owls are observed during surveys, or have been documented breeding on the. site within the last three years, the extent of burrowing owl habitat on the site should be delineated by a qualified ornithologist. A 1:1 replacement ratio is recommended to off-set permanent impacts to burrowing owl habitat. Land identified to off-set impacts to burrowing owls must be protected in perpetuity either by a conservation easement or fee title acquisition. Burrowing owl mitigation lands should be identified in the vicinity of the project site. (I If it is determined that burrowing owls occur on a given project site, a burrowing owl habitat mitigation plan should be prepared and be subject to review and approval of DFG. An agreement that will bind the applicant to the conditions should be required. No evictions or destruction of habitat should be allowed until the mitigation plan has been finalized and a binding agreement executed. The plan should identify the mitigation site and any activities necessary to enhance the site and may include the construction of artificial burrows as a temporary measure. The plan should also include a description of monitoring and management methods proposed at the mitigation site. Funding must be provided for monitoring and maintenance of any lands identified for mitigation purposes in perpetuity. An annual report should be prepared and submitted to DFG by December 31 of each year. Contingency measures for any anticipated problems should be identified within the plan. ! ( Mitigation to avoid ~take" of burrowing owls and their nests is fulfilled by conducting pre-construction surveys for the species no more than 30 days prior to construction. Sites found to have burrowing owls present during the preconstruct ion survey will have a biological monitor present during site disturbance. Pre-construction survey results should be submitted to DFG for review and approval. /3 CÐ tJÒ w5"' (f Mr. Michael Stella May 24, '2004 Page 4 It is unlawful to take, possess, or destroy bur~owing owls, their nests, or their eggs, pursuant to Section 3503.5 of the Fish and Game Code and the Federal Migratory Bird Treaty Act. For this reason, any impacts to the species during-the breeding season (February 1 to August 31) must be avoided. If there are construction activities proposed during the breeding season, and if burrowing owls are observed on or within 250 feet of the project site during pre-construction surveys, a protective buffer must be established with the placement of a barrier fence which shall remain in place for the duration of the breeding season. A protective buffer of 250 feet is generally recommended. DFG will rely on site- specific factors to determine an acceptable buffer distance after survey results have been submitted. If preconstruction surveys are conducted during the non- breeding season and burrowing owls are observed on the site, DG will recommend buffer distance or, if necessary, authorize owl eviction after the habitat management plan and mitigation agreement have been finalized. ( ( Mitigation Measure 9 CTS have been documented in the vicinity of the project area, and suitable breeding habitat likely occurs within dispersal distance of the project area. The distance CTS disperse has been found to be much further than originally assumed. CTS move long distances, up to one mile, between breeding habitats and estivation sites through areas which are periodically disced or disturbed. Mitigation for this species must take into account the different biological and ecological requirements of the aquatic early stages and the largely terrestrial adults. Failure to adequately consider either of these life history stages may lead to elimination or reduction of the animals. .l ( At the present time CTS are being considered for listing under both the State and Federal Endangered Species acts. New information regarding the biology of this species is being obtained at a rapid rate. In consideration of the current situation, the following language should be added to the mitigation requirements for impacts to CTS and their habitat: "If California tiger salamander (CTS) are determined to be present within the project footprint or are known to occur within dispersal distance of the project site J3/0ÒðJ~ ,( Mr. Michael Stella ( . May 24, 2004 Page 5 and there are no significant barriers to movement, compensation will be provided for impacts to CTS habitat at a ratio determined by the appropriate resources agencies but no less than at a ratio of 1:1." Mitigation Measure 10 ( ( Similar to the burrowing owl, pre-construction surveys for San Joaquin kit fox'are implemented to avoid direct ~take" of an individual or active den, not to determine habitat suitability or the need to provide mitigation for impacts to habitat. The projeèt occurs in the northern range of the San Joaquin kit fox and represents a loss of suitable dispersal and foraging habitat and potential denning habitat. DFG does not agree with the finding that consultation with the U. S. Fish and Wildlife Service (USFWS), if a kit fox is observed on or near the project site during pre-construction surveys, is adequate to reduce impacts to this species to a level of less than significant. San Joaquin kit fox have been documented moving six to eight miles in one night and were observed in July and August of 2002 near Vasco Caves, within dispersal distance of the project site. In addition, because kit fox occur in low numbers and the detection rate is low in the northern part of their range, even in areas where they are known to be denning, negative findings based on the survey methods employed are not acceptable. Surveys done in the northern part of the range to support a ~egative finding may differ from requirements throughout the rest of the range and need to be designed in consultation with DFG and USFWS to assure compliance with the State and Federal Endangered Species acts. Mitigation Measure 12 In addition to bird surveys during the breeding season, surveys for nests should be conducted in suitable habitat at all times of the year. If a nest is identified for a species known to have high site fidelity and there will be direct take of the nest, DFG should be contacted and mitigation measures agreed upon before any action is taken. If disturbance occurs outside of the breeding season and there is not direct take of 'the nest site, no further action . ( ( " J3c¿OV 205" ,.( ( Mr. Michael Stella May 24, 2004 Page 6 is required. The following is a partial list of birds known to reuse nest sites: golden eagle, bald eagle, burrowing owl, red-tailed hawk, red shouldered hawk, ferruginous hawk, and barn owl. In conclusion, DFG disagrees with the finding that the mitigation requirements as stated in the document reduce the level of impacts from this action to a less-than-significant level. It is important to consider the cumulative effects of the large number of projects occurring in these grassland areas north of I-580. To reduce negative effects to the biological resources currently dependant on contiguous grassland habitat in this area to a less-than-significant level as required under CEQA, mitigation in proportion to the impacts must be required for all projects which will result in direct habitat loss as well as habitat fragmentation and blocking of movement corridors. DFG recommends that additional avoidance and mitigation measures be required as stated in our letter. (( We appreciate your consideration of our comments and are available to discuss our concerns. If you have any questions, please call Ms. Janice Gan, Environmental Scientist, at (209) 835-6910; or Mr. Scott Wilson, Habitat Conservation Supervisor, at (707) 944-5584. Sincerely, kfJ~ Robert W. Floerke Regional Manager Central Coast Region cc: See next page ( C ( ( ( ( i \ ( r3q 0özD~ Mr. Michael Stella May 24, 2004 Page 7 cc: Mr. Daniel Buford U. S. Fish and Wildlife Service 2800 Cottage Way, W2605 Sacramento, CA 95825 State Water Resources Control Board Post Office Box 100 Sacramento, CA 95812 Mr. Ed Wylie u. S. Army Corps of Engineers 333 Market Street San Francisco, CA 94105-2197 ,. //1'Í~.';:'". ¡{<,~''''.'fµ ....~i'1 I'·· ' .... '. ~ .~.. .~..' \.'. '. ", ';""', '.\ ·"'·····~.·······'···..!¡.'·~·"··:,....,I"'... --- . <{';j, ~:~~ ~"~l;o/ 'Arnold kchwarzenegger Governor ) , ) STATE OF CALIFORNIA \li'Q ~~ ("_ Governor's Office of Planning and Re'search .'-..~.J State èlearin.ghouse and'P1anning Unit ..~,.~ Jan Boel Acting Director. May 6, 2004 Michael Stella City of Dublin 100 Civíc Plaza Dublin, CA 94568 RECEIVED MAY 1 0 2004 PUBLIC WOfiKS Subject: Tassajara Road Ultimate Precise Alignment SCH#: 2004042008 Dear Michael Stella: The enclosed comment (s) on your Negative Declarationwas (were) received by the State Clearinghouse after the end of the state review period, which closed on April 30, 2004. We are forwarding these comments to you because they provide information or raise issues that should be addressed in your fmal environmental document. The California Environmental Quality Act does not require Lead Agencies to respond to late comments. However, we encourage you to incorporate these additional comments into your fmal environmental document and to consider them prior to taking final action on the proposed project. Please contact the State Clearinghouse at (916) 445-0613 if you have any questions concerning the env'iromnental review process, ·Ifyou hílve a question regarding theabove~D.amed project, please refer to the ten-digit State Clearinghouse number '(2004042008) when contacting this office. Sincerely, ~~ . 'Terry ~erts Senior Planner, State Clearinghouse Enclosures cc: Resources Agency - ' .~.' ..... ", 1400 TENTH STREET P.O. BOX 3044 SACRAMENTO, CALIFORNIA 95812-3044 TEL (916) 445-0613 FAX (916) 323-30-18 www.opr,ca.gov a rerry Tamminen Secretary for E"";"onmental yeclion California Regional Water Quality Control Board San Francisco Bay Region \ 1.1 \ C57::'JÞ~ Internet Address: http://W..VW.swrcb.ca.gov 1515 Clay Street, Suite 1400, Oakland, California 94612 Phone (510) 622-2300 3 FAX (510) 622-2460 Arnold Sehwarzeoegge ~lW~ ~ ® ~ II ~ Œ~ Date: IAPR 2 8 ZOO4 HO'O B II ileNa. 2198,09 (BKW) Ltid:t. MAY - 5 2.004 - - .. Melissa Morton, Director City of Dublin OUSE Pubic Works Department STATE CLEAR\NG H 100 Civic Plaza Dublin, CA 94568 Re: Initial Study I Mitigated Negative Declaration for the Tassajara RoadlFallon Road Ultimate Right-of-Way Alignment SCH No. 2004042008 Dear Ms, Morton: Regional Water Quality Control Board (Water Board) staff have reviewed the Initial Study I Mitigated Negative Declaration (ISMND) for the Tassajara Road/Fallon Road Ultimate Right'-of- Way Alignment (Project). The ISMND evaluates the potential environmental impacts that might reasonably be anticipated to result ftom the proposed Project, which includes the establishment of an ultimate right-of-way for the future widening of a portion of Tassajara Road to six vehicle lanes and for the future construction of a portion of Fallon Road to include four vehicle lanes, The Project includes the replacement of two existing culverts in tributaries of Tassajara Creek with clear span bridges, which is anticipated to improve habitat connectivity and also to improve channel stability in these tributaries, Water Board staff have the following comments on theISMND, Comment !. Evaluatiorf of Environmental Impacts, 8. Hydrology and Water Quality, c) substantially alter the existing drainage pattern of the site or area, including through the alteration of a course of a stream or river, in a manner which would result in substantial erosion on- or off-site?, Page 22. Water Board staff recommend changing the impact under this topic ftom "Less Than Significant Impact" to "Less Than Significant With Mitigation". Although several of the Proj ect components, such as the replacement of culverts with ftee span bridges and the use of retaining walls to avoid fill in the riparian corridor, are intended to improve habitat values and channel stability, these measures have the potential to result in significant erosion impacts if they are not designed carefully, In particular, the ,regrading of the tributary channels after the removal of culverts will require the involvement of an experienced fluvial geomorphologist to ensure that the reconfigured channels remain stable, Therefore, Water Board· staff recommend that the impact level be raised to "Less Than Significant With Mitigation" and that the mitigation include the use of a fluvial geomorphologist with experience in creek restoration in the design of the reconfigured tributary channels and in the design of the retaining wall along Tassajara ) Preserving, enhancing, and restoring the San Francisco Bay Area's waters for over 50 years o Recycled Paper I 4,2.. ~ 'êJ)$"' ,,' Ms. Morton - 2 - . Tassajani Fallon Road ROW, ISMND, Dublin ., J :~. . .. ~... , Creek, This mitigation measuresJiôttlêlii,-èduce long-termm~ance~()sts associated ., . . I ' .'. ... With the Project. l . _ ""d..' Comment 2 ., Mitigation Measure 15, Page 51, WªterÐoard staffrecommend,that the <:;ityqfDublin, use the Interagency Meetings held by the Army Corps ofÉngineers to present the propQsed Creek Restoration Plan to the resource agencies, The Interagency Meetings ·are an· effective forum in which representatiVes of the resource agencies can meet with project applicants and designers to·disc1.1.ssagency concerns and: issues and to ~evelop resolutions to those concerIiS. ' . "' ) Comment 3 Mitigation Measure 15, Page 51, Text in the last paragraph of page 51 states that, "Construction of the retaining wall is subject to the jurisdiction of the California Department ofFish ~d Game· (CDFG) and a Streambed Alteration Agreem.ep.t will need to be obtained fi:om CDFG for its construction, As the retainIng wall is a mitigation feature . of the project designed to niinimize]oss of riparian habitat and jurisdiction a). area no . addition..a1 mitigatiOll is necessary for its construction."·. Thisstatem.ent is 'not C01Tect. The ' retaining wall will rèduçe " the impacts, butwill nöt elj.nlirutteâu impacts, Therefore, the use of the retaining wall will reduce the required amóuntofmitigation,.butit will not elimin~e the need for mitigation, Mitigation must. still be provided for the impacts associated with the wall . In addition, construction of the wall may also be within the jurisdiction of the Water. Board. Water ~oard jurisdiction is not limited to channel surfaces below the ordinary high water mark. . . ,/ Comment 4. 8. Hydrology and Water Quality, Environmenìal S¢tting, Page 61, Text in the paragraph under the subheading, Surface Water Qurllity, refers to stormwater permitting requirements for construction projects that disturb more than·:five acres of soiL Please note. that the threshold for construction stormwat~ permits dropped fi:om :five acres to One acre of disturbed soil in March of 2003, Comment 5 8, Hydrology and Water Quality, Project Impacts, Page 62, Mitigation 'measure 32 refers to the water quality standards imposed under the Alåmeda County Clean Water Program.. The Alameda CountyCleanW aterProgram implemènts· thç' r.eqüirem.ents of the Alameda: County NPDESpermit for storrnwaterdischarges. Please not¢ th.ät t1?,eAhuneda Countý .. NPDES permit was re':issued 'on Fèbruary 19,2003, New development and sigrii:ficant ' ) Preserving, enhancing, and restoring the San Francisco Bay Area's waters for over 50 years rlfpcIed Paper \~3 c'bZOS Ms. Morton - 3 - Tassajara Fallon Road ROW, ISMND, Dublin redeve10pmentprojects that are constructed after Februaryof2.Q05.will be required to comply with·theriUrrieñc standards for post-construction stormwaterBMPs in the re-issued permit. Treatment BMPsare to be constructed that incorporate, ata minimum, the following hydraulic sizing design criteria to treat stormwater runoff, As appropriate for each criterion, local rainfall data are to be used or appropriately analyzed for the design of the BMPs, . Volume Hydraulic Design Basis: Treatment BMPs whose primary mode of action depends on volume capacity, such as detention/retention units or infiltration structures, shall be designed to treat stormwater runoff equal to: 1, the maximized stormwater quality capture volume for the area, based on historical rainfall records, determined using the formula and volume capture coefficients set forth in Urban Runoff Quality Management, WEF Manual of Practice No. 23/ ASCE Manual of Practice No, 87, (1998), pages 175-178 (e,g" approximately the8Sth percentile 24-hour storm runoff event); or 2. the volume of annual runoff required to achieve· 80 percent or more capture, determined in accordance with the methodology set forth in Appendix D of the California Stormwater BestManagement Practices Handbook, (1993), using local rainfall data, Flow Hydraulic Design Basis: Treatment BMPs whose primary mode of action depends on flow capacity, such as swales, sand filters, or wetlands, shall be sized to treat: 1. 10% of the SO-year peak flow rate; or / 2, the flow of runoff produced by a rain event equal to at least two times the 85th percentile hourly rainfall intensity for the applicable area, based on historical records of hourly rainfall depths; ,or 3, the flow of runoff resulting from a rain event equal to at least 0,2 inches per hour intensity, Water Board staff strongly encourage the use of landscape-based stormwater treatment measures, such as biofi1ters and vegetated sWales, to manage runoff from the project sites, Since landscape-based stormwater treatment measures require that some of the site surface area be set aside for their construction, the proper sizing and placement of these features should be evaluated early in the design prqcesst() facilitate incorporation of the features into the site landscaping. Water Board staff discourage the use of inlet. filter devices fòr stormwater management. Filtration systems require a maintenance prOgram that is Preserving, enhancing, and restoring the San Francisco Bay Area's waters for over 50 years êvcled Paper I L ~ ub 20~ Ms. Morton - 4 - Tassajara Fallon Road ROW, IS:MND, Dublin adequate to maintain the. functional inte~ty of the systemsand..to~ure that improperly maintained filtration devices do not themselves become sources of stonD\vater . contaminants or fail to function,W ater Board staff have (Jbserved~problems with the use of inlet filter inserts, since these devices require high levels of maintenance and are easily clogged by leaves or other commonly occurring debris, rendering them ineffective. Research conducted by the California Department of Transportation has detnonstrated that inlet filters can be clogged by a single storm event. The study found that these devices required maintenance before and after storm events as small as O.lmch of rain, In addition, trash, debris, and sediment in the catchment had a significant impact on the frequency of maintenance 1. Therefore, adequate maintenance of inlet fi1tersto provide maximum extent practicable (MEP) water quality treatment, as required by the Clean Water Act, would be prohibitively expensive and impractically time consuming. Regional Board staff recommend that the Project proponents refer to Start at the Source, a design guidance manual for stonn water quality protection, for a fuller discussion of the selection of stormwater management practices. This manual provides innovative procedures for designing structures, parking lots, drainage systems, and landscaping to mitigate the impacts of stormwater runoff on receiving waters, This manual may be obtained from the Santa Clara Valley Urban Runoff Pollution Prevention Program's ) web site (www,scvurppp,org) or by e~mailing a request to thee-mail address in the last paragraph. of this letter, Comment 6 8, Hydrology and Water Quality, Project Impacts, c) substantially alter drainage patterns, including strea;¡;nbed courses such that siltation or erosion would occur, Page 63. As . . noted in comment 1 above, the replacement of two culverts in streams tributary to Tassajara 9feekis anticipated to benefit habitat and stream channel stability. However, in order to ensure post-project channel stability, the post-project configuration of the . tributaries should be designed by a fluvial geomorphologist with experience in creek restoration. The requirement to use an experienced a fluvial geomorphologist should be· incorporated in the ISMND as an additional mitigation measure, Comment 7 8,Hydrology and Water Quality, Mitigation Measure 33, Page 63, This mitigation measure refers to the use of storm drain filters upstream of the newstormwater outfal1s associated with the Project. As noted in Comment 5, above, Water Board staff do not accept storm drain inlet filters as MEP treatment appropriate to meet the requirements of Alameda County's NPDESpermit for stormwater disçharges, I Otbmer, Friedman, Borroum and Currier, November 2001, Performance Evaluation of Structural BMPs: Drain Inlet Inserts (Fossil Filter™ and StreamGuard™) and Oil/Water Separator, Sacramento, Caltrans, ) Preserving, enhancing, and restoring the San Francisco Bày Area's waters for over 50 years lfpcled Paper I 4-0 ':) f-...zD5' 10 Ms. Morton - 5 - Tassajara Fallon Road ROW, ISMND,Dublin " ,- . .. . , . '..:, ',- '.' .' ,., ./- '.'~".... . .. . . " '.. '. ' > .. .., . ' .. . .,. Also, the new outfalls will require permits from the Anny Corps of Engineers, CDFG,and the Water Board, The Water Board permit will require-'the uses ofstôrniwater treatment consistent with the MEP standard in the Clean Water Act. If you have any questions, please contact me at (510) 622-5680 or bye-mail at bk:w@Ib2,swrcb,ca,gov, Sincerely, ~ t1/At~ Brian Wines Water Resources Control Engineer South/East Bay Section cc Learinghouse. Attn: Katie Shulle Joung, P.O. Box 3044, Sactamento, CA ~t2~;~ US ACE, San Francisco District, Attn: Regulatory Branch, 333 Market Street, San Francisco, CA 94105 -2197 CDFG, Central Coast Region, Attn: Robert Floerke, Regional Manager, P,O, Box 47, Yountville CA 94599 ) Preserving, enhancing, and restoring the San Francisco Bay Area's waters for over 50 years @'c/ed Paper I W ~ao -¿D5: ALAMEDA COUNTY FLOOD CONTROL AND WATER CONSERVATION DISTRICT 5997 PARKS IDE DRIVE , PLEASANTON, CALIFORNIA 94588-5127 . PHONE (925) 484-2600 FAX (925) 462-3914 April 30, 2004 REceiVED f'.' >;)1 fJí'jíJ4 'QJ ilÞ L,.... ' PU6L'C WOR&(& i\i\ Ms. Melissa Morton, Public Works Director City of Dublin 100 Civic Plaza Dublin, CA 94568 Re: Initial StudylMitigated Negative Declaration of Tassajara Road and Fallon Road Ultimate Right-of- Way Alignment Dear Ms, Morton: Zone 7 has reviewed the referenced CEQA document in the context of our mission to provide drinking water, non-potable water for agriculture and irrigated turf, flood protection, and groundwater and stream management in the Livermore-Amador Valley. Our comments on the Initial Study and Mitigated Negative Declaration are as follows: 1. On page 3 (of the Initial Study), Project Description, the project consists of the establishment of the ultimate alignment and widening ofTassajara Road and Fallon Road. This project would add new impervious areas that could lead to additional runoff. Zone 7' s standard mitigation practice is to assess new development with SDA 7-1 drainage fees. Fees are collected for any development creating new impervious areas that would contribute to runoff into Zone 7's Flood Control facilities. 2. On page 61, Section 8, Hydrology and Water Quality, under Environmental Setting- Local Swface Water, the first sentence should be corrected to read: ".,. which drains to the San Francisco Bay via the Arroyo de la Laguna and through Alameda Creek." , In the second paragraph, it mentions that Zone 7 provides maintenance of regional drainage facilities within the project area portion of Alameda County. It should be noted that Zone 7 only provides maintenance of its own facilities. 3. On page 63, Section 8, Hydrology and Water Quality, under Project Impacts, Item e), two new storm drain outfall structures are proposed and are shown on Sheet 1 of the Precise Ultimate Alignment Plan. The storm drain outfall structures should also be designed to prevent the discharge ttom causing bank erosion, which would lead to sedimentation downstream in Tassajara Creek. Mitigation Measure 33, page 33, only identifies the use of a storm drain filter to mitigate for polluted water. Based on the submittal, no outfall structure detail has been provided for evaluation. IL\~ 0bW$" Ms. Melissa Morton Page 2 April 30, 1004 ( Also under Mitigation Measure 33, page 33, alternatives such as on~site controls to reduce the discharge of sediment to Tassajara Creek should be considered. 4. On page 64, Section 8, Hydrology and Water Quality, Items hand i, a hydraulic study utilizing Zone 7' s 100- year design flow on Tassaj ara Creek should be performed to evaluate the impact of removing the existing culverts on the northern and southern tributaries and the effects on downstream Zone 7 flood control facilities, as well as to identify where the 100- year water surface elevation is immediately downstream of the two proposed bridge crossings. Also, please submit for review all future plans and specifications regarding this proposed project, and any pertinent information or studies to John Koltz, Senior Engineer, Advance Planning. We appreciate the opportunity to comment on this document. Please feel free to contact Jack Fong at (925) 484-2600, ext. 245, or myself at ext. 400, if you have any questions or comments. Sincerely, vt~ I \ "1-- Principal Engineer Advance Planning JPH:JF:jr cc: Ed Cummings John Mahoney John Koltz Joe Seto Jack Fong file: P:AdvpJn\CEQARef\TassajaraRd&FallonRdRightofW ayAlignnmet.doc DUBLIN SAN RAMON SERVICES DISTRICT April 26, 2004 City of Dublin - Public Works Department Attn: Michael Stella, P,E. - Senior Civil Engineer 100 Civic Plaza Dublin, CA 94568 Subject: I L\-ß Ob zc£ 7051 Dublin Boulevard Dublin, California 94568 FAX: 925 829 1180 9258280515 RECEIVED 2 7 2004 PUBLIC WORKS Tassajara Road and Fallon Road Uliimate Right of Way Alignment - COllilllents for the Initial Study/Mitigated Negative Declaration Dear Mr. Stella: Thank you for the opportunity to comment on the above subject document, The Dublin San Ramon Services District has the following comments: . The locations of all DSRSD utilities and facilities should be identified prior to project approval, Coordination with DSRSD should be conducted to ensure that the proposed activities do not interfere with existing DSRSD facilities, and the installation of new water and sewer lines are completed in conformance with DSRSD Standard Procedures, Specifications and Drawings. Thank you for consideration in this matter. If you have any questions regarding these comments please contact me at (925) 875-2254, SVD:mb cc: Dave Requa David Behrens STEVEN DELIGH Assistant Engineer File: DP-04-292; CEQA; Chron H:\ENGDEPfICEQA\Tassajara Rd Exlcnsioo Conunenu4·2MJ4.doc The Dublin San Ramon- Services District is a Public Entity he£. I TÞ'-sP,JAItÞ R.M> ftuc,sl A-M6AJM~r I L/ 1'56 zoS' Alameda County Fire Department City of Dublin Division Fire Prevention Bureau (925) 833-6606 Fax (925) 829-9248 April 26, 2004 To: Public Works, Terry Alcantara City of Dublin RE: Initial Study Tassajara Road/Fallon Road alignment From: S~i1lan, Deputy Fire Marshal I have reviewed the study and have the following comments: 1. We agree with the finding of the study in regard to the Fire Service impacts, ( 15() ðö LOS CITY OF DUBLIN 100 Civic Plaza, Dublin, California 94568 Website: http://www.ci.dublin.ca.us June 10, 2004 State of California - Department of Fish and Game P.O. Box 47 Yountville, CA 94599 Attention: Subject: Robert W. Floerke, Regional Manager - Central Coast Region Initial Study/Mitigated Negative Declaration for the Tassajara Road/Fallon Road Ultimate Right-of-Way Alignment Alameda County SCH 2004042008 Dublin CIP 96400 Dear Mr. Floerke: Thank you for submitting comments to the State Clearinghouse related to the subject CEQA document. Although the comments were submitted after the review period had closed on 4/30/04, we offer the following responses to your comments, and will incorporate the comments into the Mitigated Negative Declaration and Mitigation Monitoring and Reporting Program to be considered by our City Council for adoption on July 6, 2004 at 7:00 pm at the Council's regularly scheduled meeting. The below comments were prepared in consultation with our biological consultant, LSA Associates, Inc. Comment 1: The indirect effects of the road expansion have not been addressed. The most significant impacts from this road project are associated with habitat fragmentation as the road becomes a barrier to dispersal. Habitat fragmentation is cited as a primary reason for decline in a number of species of concern which are known to occur in the project area, Mortality from vehicle strikes will increase as a result of more and faster traffic. Response 1: Tassajara Road is currently a barrier to dispersal and has already fragmented the habitat on the east and west sides of the road. The road conveys a high volume of traffic that travels at a relatively high speed (average 45 to 50 mph). The replacement of the North and South drainage culverts with bridges would improve the ability of wildlife to move from one side of the road to the other, following the stream corridors. The frequency of wildlife attempting to move across Tassajara Road when it is widened would be decreased due to the residential development that will occur at the same time the road is widened. The residential development will form a barrier to any wildlife attempting to move from undeveloped lands to the east except at the stream under crossings. Implementation of Mitigation Measure 15 contained in the Initial Study will allow unimpeded wildlife movement beneath the road corridor at the northern and southern drainages. The construction of these bridges would improve the safety of wildlife movement at these two locations. Area Code (925) , City Manager 833-6650 ' City Council 833-6650 ' Personnel 833-6605 ' Economic Development 833-6650 Finance 833-6640 ' Public Works/Engineering 833-6630 ' Parks & Community Services 833-6645 ' Police 833-6670 Planning/Code Enforcement 833-6610 . Building Inspection 833-6620 ' Fire Prevention Bureau 833-6606 Printed on Recycled Paper ;5/ Db 2DS State of California - Department of Fish and Game Robert W. Floerke, Regional Manager - Central Coast Region June 10, 2004 Page 2 {' Comment 2: Serious consideration should also be given to the curb and gutter installation. These design features are particularly detrimental to California tiger salamanders which become trapped on the road or are washed down storm drains. The City should design the road to minimize the impacts to the dispersal of species of concern and should require acquisition of property which contributes to preservation of corridors for known populations of the species that will be impacted by the project. Response 2: The migratory movement of California tiger salamanders to and from breeding ponds across the road is not likely to occur after residential construction on lands to the east of the road due to the replacement of upland grasslands with homes. CTS would not be able to move through these residential areas. The replacement of the existing culverts in the north and south drainages with bridges would improve the ability of California red-legged frog to move up and down these streams, The Draft Mitigated Negative Declaration was prepared prior to obtaining information on the Mission Peak Homes property (APN 985-0002-001) that confirmed breeding::CTS on this property. As a result, the text of the Draft MND will be revised to reflect this information and Impact B10-4 revised to state that CTS are present in project area grasslands and that road construction will result in loss of suitable habitat. Mitigation Measure 9 will be revised to delete the need for presence/absence surveys and delete the beginning of the first sentence of the- second paragraph which read "If California tiger salamanders are determined to be present on the project site." This is no longer a question; they are known to be present. ( Based on your recommendation, we will amend Mitigation Measure 9 to include the following additional requirement: Curb cuts (usinQ the same desiQn as wheelchair ramps) will be installed on both sides of storm drain inlets to allow small vertebrates that become trapped on the road to move off the road surface prior to beinQ washed or fallinQ into storm drain inlets. The above chanae is incorcorated bv reference into the Initial Studv/Mitiaated Neaative Declaration for this croiect. Comment 3: It is stated that portions of the right of way have been disturbed. Grazing is included as a disturbance activity, In terms of analyzing habitat quality, it is important to recognize that grazing is beneficial to a number of species of concern in the area including San Joaquin kit fox (SJKF), western burrowing owl, and California tiger salamander (CTS). Many species, including those typically assOciated with aquatic habitat such as California red-legged frog and CTS, use the grasslands as well as the riparian corridors for movement. California red- legged frog and western pond turtle are likely to use or occupy upland areas in the area as well as sections of the tributaries to Tassajara Creek. Response 3: Comment noted. J 5"d. ~zr£ State of California - Department of Fish and Game . Robert W. Floerke, Regional Manager - Central Coast Region June 10,2004 Page 3 ( Comment 4: [ref. Mitigation Measure 8J Mitigation as proposed in the document does not ensure that impacts to burrowing owl will be reduced to a level of less-than-significant. Pre- construction surveys· for burrowing owls should be done in conjunction with protocol level surveys during the wintering and breeding seasons. Pre-construction surveys alone are not recommended by DFG as adequate to determine impacts to western burrowing owl and their habitat. Response 4: The project area was surveyed for the presence of burrowing owl as part of the field work conducted for.this project. In addition biological surveys conducted for several of the affected parcels also included burrowing owl as a target species. None of these surveys found occupied burrows or observed a burrowing owl within the road corridor. The presence of suitable habitat was noted and the study concludes burrowing owl could occur within the road corridor. This finding led to Mitigation Measure 8. The measure is consistent with Department of Fish and Game requirements. Comment 5: [ref. Mitigation Measure 9J CTS have been documented in the vicinity of the project area, and suitable breeding habitat likely occurs within dispersal distance of the project area.· ...the foJ/owing language should be added to the mitigation requirements for impacts to CTS and their habitat: "If California tiger salamander (CTS) are determined to be present within the project footprint or are known to occur within dispersal distance of the project site and there are no significant barriers to movement, compensation will be provided for impacts to CTS habitat at a ratio determined by the appropriate resources agencies but no less than at a ratio of 1:1." Response 5: A California tiger salamander breeding pond has been documented within dispersal distance of the project area and the project will result in the 1055 of suitable upland habitat. Mitigation Measure 9 requires habitat preservation at a 1: 1 ratio. Please also see Response 2. Comment 6: [ref. Mitigation Measure 10J The project occurs in the northern range of the San Joaquin kit fox and represents a loss of suitable dispersal and foraging habitat and potential denning habitat. DFG does not agree with the finding that consultation with the U. S. Fish and Wildlife Service (USFWS), if a kit fox is observed on or near the project site during pre- construction surveys, is adequate to reduce impacts to this species to a level of less than significant. San Joaquin kit fox have been documented moving six to eight miles in one night and were observed in July and August of 2002 near Vasco Caves, within dispersal distance of the project site. Response 6: The project incorporates the mitigation measures contained in the Eastern Dublin Specific Plan Environmental Impact Report, the overall plan document which included the Tassajara Road alignment and its intersection with Fallon Road. Additional biological survey work conducted in this area for surrounding properties since the East Dublin plan was adopted and the field work conducted for this project have failed to detect kit fox in Eastern Dublin. The range as defined by positive sightings or other positive physical evidence has not changed since J53 ~ WS" State of California - Department of Fish and Game Robert W, Floerke, Regional Manager - Central Coast Region June 10, 2004 Page 4 the Eastern Dublin plan was adopted. The Vasco Caves sighting is consistent with past observations. Kit fox continue to be found no further west than the base of the Altamont Hills in north Livermore. As a result the mitigation measures contained in this Initial Study/Mitigated Negative Declaration are considered to adequately mitigate any.potential impacts to· kit fox, Comment 7: [ref. Mitigation Measure 12J In addition to bird surveys during the breeding season, surveys for nests should be conducted in suitable habitat at all times of the year. If a nest is identified for a species known to have high site fidelity and there will be direct take of the nest, DFG should be contacted and mitigation measures agreed upon before any action is taken, If disturbance occurs outside of the breeding season and there is not direct take of the nest site, no further action is required. The following is a partial list of birds known to reuse nest sites: golden eagle, bald eagle, burrowing owl, red-tailed hawk, red shouldered hawk, ferruginous hawk and barn owl. Response 7: The California Fish and Game code (Sec 3503.5) protects active raptor nests and their contents. Mitigation Measure 12 of the Initial Study/Mitigated Negative Declaration is consistent with the requirements of the Fish and Game code. Two of the species mentioned in this comment, golden eagle and bald eagle, are also fully protected species in California (Fish and Game code Section 3511) and are protected by the federal Eagle Protection Act. Neither of these species nest within the road corridor. Comment 8: In conclusion, DFG disagrees with the finding that the mitigation requirements as stated in the document reduce the level of impacts from this action to a less~than-significant level. It is important to consider the cumulative effects of the large number of projects occurring in these grassland areas north of 1-580. To reduce negative effects to the biological resources currently dependant on contiguous grassland habitat in this area to a less-than-significant level as required under CEQA, mitigation in proportion to the impacts must be required for all projects which will result in direct habitat loss as well as habitat fragmentation and blocking of movement corridors. DFG recommends that additional avoidance and mitigation measures be required as stated in our letter. Response 8: The cumulative effects of development in East Dublin are addressed in the East Dublin Specific Plan Environmental Impact Report. This Initial Study/Mitigated Negative Declaration addresses the specific effects of Tassajara Road widening. As noted in Response to Comment 2, Mitigation Measure 9 has been revised to compensate for the loss of grassland habitat and provide cuts in vertical curbs to allow small vertebrates trapped within the roadway an opportunity to escape. I trust our responses, as offered above, resolve your concerns about the proposed project. You are also encouraged to present your thoughts to the City Council at their July 6th hearing at 7:00 pm. If I can answer any other questions, please call me. 15~ ðQ LOS- State of California - Department of Fish and Game Robert W. Floerke, Regional Manager - Central Coast Region June 10, 2004 Page 5 ( Sincerely, Michael Stella, P.E. Senior Civil Engineer City of Dublin Public Works Department ph. (925) 833-6639, fax (925) 829-9248 E-mail: michael.stella@ci.dublin.ca.us Enclosure: Dept. of Fish and Game letter dated 5/24/04 cc: Melissa Morton, Public Works Director Jerry Haag, Planning Consultant Malcolm Sproul, LSA Associates Inc. Jeri Ram, Planning Manager G:\DEVELOP\Dublin Ranch\Tassajara Road Alignment\Correspondence\F&G Response 6-02-04.doc " J~ç~ZOs- CITY OF DUBLIN 100 Civic Plaza, Dublin, California 94568 Website: http://www.ci.dublin.ca.us June 10,2004 California Regional Water Quality Control Board San Francisco Bay Region 1515 Clay Street, Suite 1400 Oakland, CA 94612 Attention~ Brian Wines, Water Resources Control Engineer Subject: Initial Study/Mitigated Nega,tive Declaration for the Tassajara Road/Fallon Road Ultimate Right-of-Way Alignment SCH No. 2004042008 Dublin CIP 96400 Dear Mr. Wines: Thank you for submitting comments to the State Clearinghouse related to the subject CEQA document. Although the comments were submitted after the review period had closed on 4/30/04, we offer the following responses to your comments, and will incorporate the comments into the Mitigated Negative Declaration and Mitigation Monitoring and Reporting Program to be considered by our City Council for adoption on July 6th, 2004 at 7:00 pm at the Council's regularly scheduled meeting. Comment 1. Evaluation of Environmental Impacts, 8. Hydrology and Water Quality, c) substantially alter the existing drainage pattern of the site or area, including through the alteration of a course of a stream or river, in a manner which would result in substantial erosion on- or off-site? (Page 22) Water Board staff recommend changing the impact under this topic from "Less Than Significant Impact" to "Less Than Significant With Mitigation': Although several of the Project components, such as the replacement of culverts with free span bridges and the use of retaining walls to avoid fill in the riparian corridor, are intended to improve habitat values and channel stability, these measures have the potential to result in significant erosion impacts if they are not designed carefully, In particular, the regarding of the tributary channels after the removal of culverts will require the involvement of an experienced fluvial geomorphologistto ensure that the reconfigured channels remain stable. Response 1. Based on your recommendation I we will amend Mitigation Measure 33 as follows, although the City continues to believe that the aJteration of existing streams and rivers, as proposed by the project, would not be significant (amendment shown as underlined text): Mitigation Measure 33. Storm drain outfall structures installed as part of the proposed project shall be desianed to preventthe discharae from causina bank erosion and equipped with storm drain filters as approved by the Dublin Public Works Department and that comply with Regional Water Quality Control Board standards. In addition. a fluvial aeomorpholoaist shall be consulted 'after removal of each culvert at the northern and southern tributary crossinas on Tassaiara Road to ensure post-proiect channel stability. Area Code (925) , City Manager 833-6650 ' City Council 833-6650 ' Personnel 833-6605 ' Economic Development 833-6650 Finance 833-6640 ' Public Works/Engineering 833-6630 . Parks & Community Services 833-6645 ' Police 833-6670 Planning/Code Enforcement 833-6610 ' Building Inspection 833-6620 ' Fire Prevention Bureau 833-6606 Printed on Recycled Paper /s-w ~?..OS California Regional Water Quality Control Board Brian Wines, Water Resources Control Engineer June 1 0, 2004 Page 2 The above chanae is incorporated bv reference into the Initial Studv/Mitiaated Neaative Declaration for this proiect. Comment 2. Mitigation Measure 15, Page 51. Water Board staff recommend that the City of Dublin use the Interagency Meetings held by the Army Corps of Engineers to present the proposed Creek Restoration Plan to the resource agencies. Response 2. Based on your recommendation, we will amend Mitigation Measure 15 a) as follows (amendment shown as underlined text): Mitigation Measure 15 a). Prior to initiation of work in the northern and southern tributaries, a Creek Restoration Plan will be prepared which specifies how the disturbed reaches of the streams will be placed in a stable condition and their banks revegetated with riparian species native to these tributaries or Tassajara Creek. This plan will require the review and approval of the Corps, DFG and RWQCB. The City will seek to utilize the Interaaencv Meetinas held by the Corps to present the proposed Creek Restoration Plan to the resource aaencies. The above chanae is incorporated bv reference into the Initial Studv/Mitiaated Neaative Declaration ,for this proiect. Comment 3: Mitigation Measure 15, Page 51. Text in the last paragraph states that· construction· of the retaining wall is subject to the jurisdiction of the California Department of Fish and Game (CDFG). As the retaining wall is a mitigation feature of the project designed to minimize loss of riparian habitat and jurisdictional area, no additional mitigation is necessary for its construction, This statement is no correct. The retaining wall will reduce impacts, but will not eliminate all impacts, Response 3. The City notes that construction of the proposed retaining wall has been included to significantly minimize the need for excavation and grading near Tassajara Creek. Prior to any construction near the Creek, necessary permits and clearances will be obtained from the Corps of Engineers, U.S, Fish and Wildlife Service, Department of Fish and Game and Regional Water Quality Control Board. Requirements imposed on the project by any and all of these agencies as part of permits and clearances will be followed as part of future project construction. Comment 4. 8, Hydrology and Water Quality, Environmental Setting, Surface Water Quality, Page 61, Text in the paragraph under the subheading, Surface Water Quality, refers to stormwater permitting requirements for construction projects that disturb more than five acres of soil, Please note that the threshold for construction stormwater permits dropped from five acres to one acre of disturbed soil in March 2003, Response 4. Reference to a 5-acre threshold for discharge permitting on Page 61 is offered in a historical context to illustrate the evolution of the regulation. The City recognizes the recent /57 ~ 7JJS- California Regional Water Quality Control Board Brian Wines, Water Resources Control Engineer June 10, 2004 Page 3 ( changes to the Alameda County NPDES Permit, and intends to abide by those changes as noted in Mitigation Measures 31 and 32 on Page 62 that read in part, "The proposed project shall meet all water quality standards set forth in the City's NPDES Permit",.and "The proposed project shall meet water quality standards imposed under the Alameda County Clean Water Program". As such, no change to the Mitigated Negative Declaration or the Mitigation Monitoring and Reporting Program is needed. Comment 5. 8. Hydrology and Water Quality, Project Impacts, Page 62, Mitigation Measure' 32 refers to the water quality standards imposed under the Alameda County Clean Water Program, Please note that the Alameda County NPDES permit was re-issued on February 19, 2003. New development and significant redevelopment projects that are constructed after February of 2005 will be required to comply with the numeric standards for post-construction storm water BMP's in the re-issued permit. Response 5. To clarify the reissuance date of Alameda County's NPDES Permit and the new standards for design of post-construction stormwater BMP's, the City will amend Mitigation Measure 31 as follows (amendment shown as underlined text): ( Mitigation Measure 31. The proposed project shall meet all water quality standards set forth in the City's NPDES Permit as reissued on February 19. 2003. (Eastern Dublin EIR Mitigation Measure 3.6/54.0) The above change is incorporated bv reference into the Initial Study/Mitigated Negative Declaration for this project. . Comment 6. 8. Hydrology and Water Quality, Project Impacts, c) substantially alter drainage patterns, including streambed courses such that siltation or erosion would occur, Page 63. As noted in Comment 1 above, the replacement of two culverts in streams tributary to Tassajara Creek is anticipated to benefit habitat and stream channel stability, However, in order to ensure post-project channel stability, the post-project configuration of tributaries should be designed by a fluvial geomorphologist with experience in creek restoration. Response 6. See response to Comment 1 above. Comment 7. 8. Hydrology and Water Quality, Mitigation Measure 33, Page 63. This mitigation measure refers to the use of storm drain filters upstream of the new stormwater outfalls associated with the Project. As noted in Comment 5 above, Water Board staff do not accept storm drain inlet filters as MEP treatment appropriate to meet the requirements of Alameda County's NPDES permit for storm water discharges. Response 7. Your interpretation of Migation Measure 33 is mistaken. The City proposes the use of storm drain filters installed at the outfall structures, not at the inlets. We agree that inlet filter inserts often provide inadequate treatment. As such, we have investigated the use of outfall filters for use on linear road segments where biofiltration alternatives are not practical. )58 CV20S California Regional Water Quality Control Board Brian Wines, Water Resources Control Engineer June 10,2004 Page 4 ( For instance, we recently installed a Stormceptor filter device, as manufactured by CSR, as part of the now complete Dublin Boulevard Bridge Widening at the storm drain outfall to Alamo Creek (see RWQCB File No, 2198.11 (KHL), Site No. 02-01-C0592). The City is now developing a maintenance protocol for periodic cleaning of this device and others, We anticipate using similar devices to treat storm runoff from the widened segments of Tassajara Road. Development projects that abut the widened road segments have been (will be) required to treat storm runoff from the project site to standards set forth in the reissued Alameda County NPDES Permit before the discharge enters the trunkline system within Tassajara Road or Fallon Road. I trust our responses, as offered above, resolve your concerns about the proposed project. You are also encouraged to present your thoughts to the City Council at their July 6th hearing at 7:00 pm. If I can answer any other questions, please call me. Sincerely, Michael Stella, P.E. Senior Civil Engineer City of Dublin Public Works Department ph. (925) 833-6639, fax (925) 829-9248 E-mail: michaeLstella@cLdublin.ca.us· Enclosure: RWQCB Letter dated 4/28/04 cc: Melissa Morton, Public Works Director Jerry Haag, Planning Consultant G:\DEVELOP\Dublin Ranch\Tassajara Road Alignment\Correspondence\RWQCB Response.doc ( ..~~ ! /5q CSO wS CITY OF DUBLIN 100 Civic Plaza, Dublin, California 94568 Website: http://www.cLdublin.ca.us June 10, 2004 Alameda County Flood Control and Water Conservation District (Zone 7) 5997 Parks ide Drive Pleasanton, CA 94588-5127 Attention: Jim Horen, Principal Engineer - Advanced Planning Subject: Initial Study/Mitigated Negative Declaration for the Tassajara Road/Fallon Road Ultimate Right-of-Way Alignment Dublin CIP 96400 Dear Mr. Horen: Thank you for submitting comments related to the subject CEQA document. We offer the following responses to your comments, and will incorporate the comments into the Mitigated Negative Declaration and Mitigation Monitoring and Reporting Program to be considered by our City Council for adoption on July 6th, 2004 at 7:00 pm at the Council's regularly scheduled· meeting. . ( Comment 1. Page 3, Project Description, the project consists of the establishment of the ultimate alignment and widening of Tassajara Road and Fallon Road, The project would add new impervious areas that could lead to additional runoff. Zone 7's standard mitigation practice is to assess new development with SDA 7-1 drainage fees. Fees are collected for any development creating new impervious areas that would contribute to runoff into Zone 7's Flood Control facilities, Response 1. The City acknowledges that Zone 7 will assess a SDA 7-1 fee for all new impervious surface created by the road widening and construction, Comment 2. Page 61, Section 8, Hydrology and Water Quality, Environmental Setting, Local Surface Water, the first sentence should be corrected to read: ",. .which drains to the San Francisco Bay via the Arroyo de la Laguna and through Alameda Creek," In the second paragraph, it mentions that Zone 7 provides maintenance of regional drainage facilities within the project area portion of Alameda County. It should be noted that Zone 7 only provides maintenance of its own facilities, Response 2. The City acknowledges the followin,g changes to the first and second paragraphs (deleted text is stricken, added text is underlined): Area Code (925) , City Manager 833-6650 ' City Council 833-6650 ' Personnel 833-6605 ' Economic Development 833-6650 Finance 833-6640 ' Public Works/Engineering 833-6630 ' Parks & Community Services 833-6645 ' Police 833-6670 Planning/Code Enforcement 833-6610 ' Building Inspection 833-6620 ' Fire Prevention Bureau 833-6606 Printed on Recycled Paper / f..p 0 ()ò 2-oS Alameda County Flood Control and Water Conservation District Jim Horen, Principal Engineer - Advanced Planning June 10, 2004 Page 2 ( "The project area is located within the Alameda Creek watershed which drains to the San Francisco Bay via the Arroyo Dol V3110 3nd ^rroyo de b L3gun3 Arroyo de la Laguna and through Alameda Creek." "The project area is located within the jurisdiction of Zone 7 of the Alameda County Flood Control and Water Conservation District (Zone 7). Zone 7 provides maintenance of its own regional drainage facilities within this portion of Alameda County." Both of the above chanaes are incorporated by reference into the Initial Study/Mitiaated Neaative Declaration for this project. Comment 3. Page 63, Section 8, Hydrology and Water Quality, under Project Impacts, Item e), two new storm drain outfall structures are proposed and are shown on Sheet 1 of the Precise Ultimate Alignment Plan, The storm drain outfall structures should also be designed to prevent the discharge from causing bank erosion, which would lead to sedimentation downstream in Tassajara Creek. Mitigation Measure 33, page 33, only identifies the use of a storm drain filter to mitigate for pOlluted water. Based on the submitta/, no outfall structure detail has been provided for evaluation, Also under Mitigation Measure 33, page 33, alternatives such as on- site controls to reduce the discharge of sediment to Tassajara Creek should be considered. Response 3. Based on your recommendation, we will amend Mitigation Measure 33 as follows, (amendment shown as underlined text): Mitigation Measure 33. Storm drain outfall structures installed as part of the proposed project shall be designed to prevent the discharge from causing bank erosion and equipped with storm drain filters as approved by the Dublin Public Works Department and that comply with Regional Water Quality Control Board standards. In addition. a fluvial geomorphologist shall be consulted after removal of each culvert at the northern and southern tributary crossings on Tassaiara Road to ensure post-proiect channel stability, The above chanae is incorporated by reference into the Initial Study/Mitiaated Neaative Declaration for this proiect. On-site controls to reduce the discharge of sediment to Tassajara Creek and details for necessary outfall structures will be required as part of the development of private properties that abut Tassajara Road and Fallon Road. No other changes or amendments to the subject CEQA document are therefore required. Comment 4. Page 64, Section 8, Hydrologyand Water Quality, Items hand i, A hydraulic study utilizing Zone 7's 1 DO-year design flow on Tassajara Creek ~hould be performed to evaluate the impact of removing the existing culverts on the no,rthem and southern tributaries and the effects on downstream Zone 7 flood control facilities, as well as to identify where the 1 DO-year water surface elevation is immediately downstream of the two proposed bridge crossings. /wJ6?JW5 Alameda County Flood Control and Water Conservation District Jim Horen, Principal Engineer - Advanced Planning June 10, 2004 Page 3 Response 4. The City acknowledges that hydraulic analyses utilizing Zone 7's 1 OO-year design flow on Tassajara Creek will be performed at the time improvement plans are reviewed for the removal of the two existing storm culverts at the northern and southern tributary crossings on Tassajara Road. Said analyses shall be in conformance with the Watercourse Protection and Flood Control sections (Chapters 7,20 and 7.24 respectively) of the Dublin Municipal Code. I trust our responses, as offered above, resolve your concerns about the proposed project. You are also encouraged to present your thoughts to the City Council at their July 6th hearing at 7:00 pm. If I can answer any other questions, please call me. Sincerely, Michael Stella, P.E. Senior Civil Engineer City of Dublin Public Works Department ph. (925) 833-6639, fax (925) 829-9248 E-mail: michael.stella@cLdublin.ca.us ( Enclosure: Zone 7 Letter dated 4/30104 cc: Melissa Morton, Public Works Director Jerry Haag, Planning Consultant; G:\DEVELOP\Dublin Ranch\Tassajara Road Alignment\Correspondence\RWQCB Response.doc r.n a QJ = ~ .~ .. 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Q) ('C '¿¡=t::~S o>s::.........t::O-.b t:: ('C Q)~ Q) 0 ~>,('C t:: ä:i Q) r./) t:: oi::S...u..... u"'CQ)SS"'Co =0Q)P-.t::~0.0S::Q)t:: Q)t::u ('C O-.boO;§ Q) '-oj:§ Q) ~.:J Q) 0.0('C..... :E ~ ~ ~ ~ ~] i'~ ~ ~ ~ ~ .~ ~E-<~08S('CQ)~0~~"E.6 ---- /íl.o ~ VJ5 L() Q) C> ro a.. 117 ~ 2Ð) RESOLUTION NO. - 04 A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF DUBLIN ********* RESOLUTION CERTIFYING AN INITIAL STUDYIMITIGATED NEGATIVE DECLARATION AND ADOPTING A MITIGATION MONITORING AND REPORTING PROGRAM FOR THE TASSAJARA ROAD/FALLON ROAD ULTIMATE RIGHT-OF-WAY ALIGNMENT WHEREAS, the City of Dublin has proposed the establishment of right-of-way lines for Tassajara Road and Fallon Road in accordance with Municipal Code Chapter 7.68; and WHEREAS, the effected segment of Tassajara Road extends from the northern boundary of Dublin Ranch Phase 1 (Tract 6925) near Shadow Hills Drive to the Alameda County/Contra Costa County line, generally following the existing road; and WHEREAS, the planned segment of Fallon Road extends from a future intersection at Tassajara Road to a point approximately 1,500 feet southeast of the intersection for connection with the portion of Fallon Road to be constructed as part of Dublin Ranch Area A; and WHEREAS, the California Environmental Quality Act (CEQA), together with the implementing Guidelines and City environmental regulations, require that projects be reviewed for potential environmental impacts and that environmental documents be prepared; and WHEREAS, an Initial Study was conducted by the City of Dublin finding that the project, as proposed, ~ould not have a significant effect on the environment; and WHEREAS, based on the findings of the Initial Study, a Mitigated Negative Declaration has been prepared pursuant to CEQA and State CEQA Guidelines and is on file in the City of Dublin Planning Department; and WHEREAS, a Mitigation Monitoring and Reporting Program has been prepared in accordance with CEQA and implementing guidelines to ensure compliance with mitigation measures included in the Initial Study; and WHEREAS, the Planning Commission adopted Resolution No. 04-37 on May 11, 2004, recommending that the City Council adopt the Initial Study/Mitigated Negative Declaration and Mitigation Monitoring and Reporting Program for the Tassajara RoadlFallon Road Ultimate Right-of- Way Alignment; NOW, THEREFORE, BE IT RESOLVED that the City Council does hereby find that: 1. The proposed establishment of right-of-way lines for Tassajara Road and Fallon will not have a significant effect on the environment based on review of the Initial Study, Mitigated Negative Declaration, and public testimony. 1 t\?r,4.~"'}"~~ii~r:~JT 5. l"\~ !µ :'+.1. 1i~!iJ>"" . ,~, ..... , / 78 ~ 7-0S: 2. The Initial Study identified a number of potentially significant environmental impacts including, but not limited to, air quality, biological resources, cultural resources, soils and geology, hydrology and water quality, noise, and transportation. However, measures have been included in the Initial Study to reduce each potentially significant impact to a less-than-significant level. 3. The Mitigated Negative Declaration has been prepared in accordance with State and local environmental laws and guideline regulations. 4. The Mitigated Negative Declaration is complete and adequate. BE IT FURTHER RESOLVED that the City Council hereby certifies the Initial Study/Mitigated Negative Declaration and adopts the Mitigation Monitoring and Reporting Program for the Tassajara RoadlFallon Road Ultimate Right-of-Way Alignment. PASSED, APPROVED AND ADOPTED this 20th day of July, 2004, AYES: NOES: ABSENT: ABSTAIN: Mayor ATTEST: City Clerk G:\DEVELOP\Dublin Ranch\Tassajara Road Alignment\reso_ cert ISMND,doc 2 -" r79 Dò W5 ORDINANCE NO. - 04 AN ORDINANCE OF THE CITY COUNCIL OF THE CITY OF DUBLIN ********* ORDINANCE TO ESTABLISH ULTIMATE RIGHT-OF-WAY LINES FOR TASSAJARA ROAD AND FALLON ROAD The City Council of the City of Dublin does ordain as follows: WHEREAS, the City Council adopted Resolution No. 133-04 on July 6,2004, calling for a public hearing pursuant to the proyisions of Sections 7,68,080 through 7,68,100 of the Dublin Municipal Code on July 20,2004, at 7:00 pm, in the City Council Chambers, 100 Civic Plaza, Dublin, California, to hear protests and objections to the establishment of ultimate right-of-way lines for Tassajara Road from Shadow Hill Drive to the Alameda County-Contra Costa County Line, and Fallon Road from a future planned intersection at Tassajara Road to a point approximately 1,500 feet southeast of the intersection; and WHEREAS, notice of said public hearing was duly given; NOW, THEREFORE, the City Council of the City of Dublin finds and does ordain as follows: SECTION 1. Pursuant to Dublin Municipal Code Chapter 7,68, the ultimate right-of-way lines are hereby established for Tassajara Road from Shadow Hill Drive to the Alameda County-Contra Costa County Line, and Fallon Road from a future planned intersection at Tassajara Road to a point approximately 1,500 feet southeast of the intersection, according to the Legal Description, attached hereto as Exhibit A, and according to the Plat to Accompany Legal Description for Tassajara Road Precise Plan Alignment, attached hereto as Exhibit B, said Exhibits herein incorporated. SECTION 2. Section 7,68,150 (Previously established right-of-way lines) shall be amended to read: Tassajara Road, from Shadow Hills Drive to the Alameda County-Contra Costa County line, Fallon Road, from a future planned intersection at Tassajara Road to a point Approximately 1,500 fee southeast of the intersection, SECTION 3. The effect of said right-of-way lines shall be governed by the provisions of Dublin Ordinance No. 44-87, as amended. 1 .i\,. ·f''''~,~ {""""¡Hi '~hì,I:'" iT , !!S,.~ í~ ..~~u '1 . 6" .(~y ·,tr~ .. . -.'--- r'itl á'it""ç.,\(;¡¿. e;":.~t!::)..·.wj·~ ¡'.' _~" u.,.._______ J 80 Do z05"' SECTION 4. This Ordinance shall become effective thirty (30) days from and after its final passage and adoption by the City Council. The City Clerk of City of Dublin shall cause this Ordinance to be posted in at least three (3) public places in the City of Dublin in accordance with Section 36933 ofthe Government Code of the State of California. SECTION 5. The City Clerk shall have a certified copy of this Ordinance recorded with the County Recorder's Office. PASSED, APPROVED AND ADOPTED this 20th day of July, 2004, AYES: NOES: ABSENT: ABSTAIN: Mayor ATTEST: City Clerk G:\DEVELOP\Dublin Ranch\Tassajara Road Alignment\ordinance_ estab row.doc 2 /~/ ~7-0S Sperfslage City of Dublin County of Alameda APN: 986 -0003-001 EXHIBIT A Page 1 of 13 Legal Description Real property situate in the City of Dublin, County of Alameda, State of California. Being a portion of the Parcel described in the Deed to "Roy and Eileen Sperfslage Living Trust", recorded May 6, 1997, Series Number 97-114479, Official Records of Alameda County, described as follows: Beginning at the southeastern corner of said Parcel; thence along the southerly line of said Parcel, North 78°51 '39" West, 31.29 feet; thence leaving said southerly line, North 03°24' 16" East, 309.90 feet to a curve to the left, having a radius of 1936.00 feet, a delta of 02°49'28"; thence along said curve an arc length of 95.44; thence North 00°34'48" East, 105.71 feet to the general northerly line of said Parcel; thence along said northerly line, North 53 °54' 16" East, 49.97 feet to the easterly line of said Parcel; thence along said easterly line, South 03°24' 16" West, 546.88 feet to the Point of Beginning. Containing: 0.39 Acres ± 17,114 sq. ft. ± .. ....__......-.....--.."'9 'f'''''.'' ,;' ^ ~~z Charles Sellman L.S. 5186 o!)- 61- 2001 Date G:\ADMIN\JOBS-02102] 03] ISURVEy\SPERFSLAGE T AIŒ,DOC ~-I" A. ,~, ~~~y¡ TO -tlte.b~ Vrdb1aMc-e :'~~ ~, ~. J: /'62.. ~ 7D~ Un City of Dublin County of Alameda APN: 986 -0004-005-01 EXHIBIT A Page 2 of 13 Legal Description Real property situate in the City of Dublin, County of Alameda, State of California. Being a portion of Parcél 1 as said Parcel 1 is described in the Deed to "Chang Su-O Lin", recorded January 6, 1982, Series Number 82-001756, Official Records of Alameda County, described as follows: Beginning at the southeastern corner of said Parcell; thence along the southerly line of said Parcell, South 53°54'16" West, 49.97 feet; thence leaving said southerly line, North 00°34'48" East, 581.43 feet to a curve to the right having a radius of 4064.00 feet, a delta of 02°49'07"; thence along said curve, an arc length of 199.92 feet; thence North 03 °23' 5 5" East, 555,74 feet; thence North 04°00'20" East, 107.15 feet; thence North 04°36'46" East, 287.98 feet, thence South 82°23'14" East, 3.74 feet to a non-tangent curve, having a radial line which bears North 83°35'22" West, a radius of 1503.00 feet, a delta of23°31 '06"; thence northerly and northeasterly along said curve to the right an arc length of 616,94 feet to the general easterly line of said Parcell; thence along said easterly line, South 11 °03' 56" West, 123.96 feet a non-tangent curve, having a radial which bears North 64°08'20" West, a radius of 1033.00 feet, a delta of 22°27'24"; thence southwesterly and southerly along said curve to the left an arc length of 404.88 feet; thence continuing along said easterly line, South 03°24' 16" West, 1774,24 feet to the Point of Beginning. Containing: 3,11 Acres ± 135,292 sq, ft, ± , . .- ~---_. ..-.--". ð Ç' - () Lf r V¿ OU '1 Date d~ Charles Sellman L.S, 5186 G:IADMIN\JOBS-02\021031\SURVEY\LIN TAKE,DOC /&3 ~ W~ Bragg/Silva City of Dublin County of Alameda APN: 986 -0004-003 EXHIBIT A Page 3 of 13 Legal Description Real property situate in the City of Dublin, County of Alameda, State of California. Being a portion of Parcel 3 as said Parcel 3 is shown on the map entitled "Parcel Map No, 1193", filed September 16, 1974, in Parcel Map Book 84, at Page 40, Series No, 93-333991, Alameda County Records, described as follows: Beginning at the most southern corner of said Parcel 3; thence along the general western line of said Parcel 3, North 11 °03'56" East, 123.96 feet to a non-tangent curve, having a radial line which bears North 60°04'16" West, a radius of 1503.00 feet, a delta of 00°55'28"; thence northeasterly along said curve to the right an arc length of24.25 feet to a compound curve having a radius of 911.00 feet, a delta of 32°54'37"; thence along said curve an arc length of 523.27 feet; thence North 63°45' 49" East, 238.99 feet to the easterly line of said Parcel 3, also being on a non-tangent curve, which a radial line bears South 42°00'25" East, having a radius of767.00 feet, a delta of 08°54'01"; thence southwesterly along said curve to the right an arc length of 119.15 feet; thence South 56°53 '36" West, 203.05 feet to a curve to the left having a radius of 1033.00 feet, a delta of 31 °01 '56"; thence along said curve an arc length of 559.49 feet to the Point of Beginning. Containing: 0.71 Acres ± 30,844 sq. ft. ± d~ Charles Sellman L.S. 5186 Date) Ò ~-O 1-2() d~ G:\ADMIN\JOBS-021021 031 ISUR VEY\BRAGG TAKE,DOC let./ ~-WS Fredrich City of Dublin County of Alameda APN: 986 -0004-002-03 EXHIBIT A Page 4 of 13 Legal Description Real property situate in the City of Dublin, County of Alameda, State of California. Being a portion of the Parcel as described in the Deed to "Thomas A. Fredrich and Helene L. Fredrich", recorded January 12, 1990, Series Number 91-112337, Official Records of Alameda County, described as follows: Parcel 1 Commencing at the southeasterly corner of said Parcel, said corner being on a curve to the left having a radial line which bears South 63°35' 13" East, a radius of767.00 feet, a delta of 00°11 '56"; thence along the general easterly line of said Parcel and northerly along said curve an arc length of2.66 feet to the Point of Beginning; thence leaving said easterly line North 04°25'31" East, 298.80 feet to a curve to the left, having a radius of 830,00 feet, a delta of 02°20'30"; thence along said curve 33.92 feet to last said easterly line; thence along said easterly line South 56°36'59" East, 32.22 feet; thence North 33°23 '01" East, 48.77 feet to a non-tangent curve having a radial line which bears North 88°48'28" East, a radius of767,OO feet, a delta of 27°24'23"; thence southerly and southwesterly along said curve to the right an arc length of 366.88 feet to the Point of Beginning. Containing: 0.30 Acres ± 13,039 sq. ft. ± Parcel 2 Beginning at the northeasterly corner of said Parcel; thence along the general easterly line of said Parcel South 12°54'53" East, 324.71 feet; thence South 33°23'01" West, 76.22 feet; thence North 03°11 '41" West, 101.83 feet to a curve to the left having a radius of 1066.00 feet, a delta of 15°14'34"; thence long said curve an arc length of283,60 feet to the northerly line of said Parcel; thence along said northerly line, North 88°30'06" East, 28.11 feet to the Point of Beginning. Containing: 0.24 Acres ± 10,614 sq. ft. ± //~ ~~HmanL.S. 5186 Date 0 !J.-- 0 1- Zo0'1 G:\ADMIN\JOBS-02\021 031 \SURVEYlFREDRICH T AKE,DOC 1~S-~zD~ Vargas City of Dublin County of Alameda APN: 986 -0004-002-01 EXHIBIT A Page 5 of 13 Legal Description Real property situate in the City of Dublin, County of Alameda, State of California. Being a portion of Parcel 1 described in the Deed to "Jose L. Vargas and Violeta Vargas", recorded October 06, 1987, Series Number 87-274300, Records of Alameda County, described as follows: Beginning at the southeastern corner of said Parcel 1; thence along the southerly line of said Parcell, South 88°30'06" West, 28.11 to a non-tangent curve having a radial line which bears North 71 °33'45" East, having a radius of 1066.00 feet, a delta of 17°28'40"; thence northwesterly along said curve to the left an arc length of325.18 feet; thence North 35°54'55" West, 602,23 feet to the easterly line of said Parcell; thence along said easterly line, South 39°05'29" East, 598.46 feet to a curve to the right having a radius of767,OO feet, a delta of 26°03'30"; thence along said curve an arc length of348.83 feet to the Point of Beginning. Containing: 0.49 Acres ± 21,488 sq. ft. ± .~ ~an L.S. 5186 ....---_.,_.-'--'-_.._~' - o .) - 6 Lf - 2-øO 'f Date G:\ADMIN\JOBS-02102 1031 ISUR VEY\ VARGAS T AKE,DOC I'BLo ~-W~ Tipper City of Dublin County of Alameda APN: 986 -0004-001 EXHIBIT A Page 6 of 13 Legal Description Real property situate in the City of Dublin, County of Alameda, State of California. Being a portion of the Parcel as described in the Deed to "James G, Tipper, SR.", recorded January 24, 1996, Series Number 96-016417, Official Records of Alameda County, described as follows: Commencing at the southeastern corner of said Parcel; thence along the easterly line of said Parcel, North 23°58'59" West, 136.84 feet to the Point of Beginning, said point being on a non- tangent curve having a radial line which bears South 55°01 '20" West, a radius of 864,00, a delta of 41 ° 1 0' 16"; thence northwesterly and northerly along said curve to the right an arc length of 620.85 to the northerly line of said Parcel; thence along said northerly line, North 73°52'01" East, 71.04 feet to the easterly line of said Parcel; thence along said easterly line, South 06°01 '01" West, 343,20 feet; thence continuing along said easterly line, South 23°58'59" East, 292,16 feet to the Point of Beginning. Containing: 0.44 Acres ± 18,995 sq. ft. ± , ._~. "-' ,.,... .~ ~~~ ~le~anL.S, 5186 () ç- 0 f - J".oCJf Date G:\ADMINIJOBS-02\02103 I\SURVEY\TlPPER TAKE,DOC /87 ~ ¿D~ Moller Trust City of Dublin County of Alameda APN: 985 -0001-001 EXHIBIT A Page 7·of 13 Legal Description Real property situate in the City of Dublin, County of Alameda, State of California. Being a portion of Parcel 2 as described in the Deed to "Charles Erwin Richey, III, Charlsie Roberta Hunter and Roberta S, Moller", recorded September 9, 1997, Series Number 97- 0164906,Contra Costa County Records (said deed is recorded in Contra Costa County, but Parcel 2 of said deed lies within Alameda County), described as follows: Beginning at the southern corner of said Parcel 2; thence along the western line of said Parcel 2, North 13°02'02" West, 165,25 feet to a curve to the left, a radius of 833,00 feet, a delta of 26°03'27"; thence continuing along said westerly line an arc length of378.84 feet; thence North 39°05'29" West, 637.44 feet to a curve to the right having a radius of767,OO feet, a delta of 45°10'34"; thence along said curve an arc length of 604,76 feet; thence North 06°05'05" East, 96.01 feet to the northerly line of said Parcel 2; thence along last said northerly line, North 73°52'01" East, 32.55 feet; thence leaving said northerly line, South 07°47'16" West, 32.59 feet to a curve to the left having a radius of736.00 feet, a delta of 43°42'11"; thence along said curve an arc length of 561.39 feet; thence South 35°54'55" East, 728.79 feet to a curve to the right having a radius of 1194.00 feet, a delta of 24°29'42"; thence along said curve an arc length of 510.46 feet to the southerly line of said Parcel 2; thence along said southerly line, South 33°23'01" West, 53.45 feet to the Point of Beginning. Containing: 1.81 Acres ± 78,756 sq. ft. ± :( .~~~~:'c~:~~,---,,·.., ., ~~~ Charles Sellman L.S. 5186 Date 0 §"'" - ó -1-- :l001 G:\ADMIN\JOBS-02\021 031 \SURVEY\MOLLER TAKE,DQC -- . /ßß ð{) w~ Mission Peak Homes City of Dublin County of Alameda APN: 985 -0002-001 EXHIBIT A Page 8 of 13 Legal Description Real property situate in the City of Dublin, County of Alameda, State of California. Being a portion ofthe Parcel as described in the Deed to "Mission Peak Homes, Inc.", recorded January 19, 1988, Series Number 88-0 12390,Official Records of Alameda County, described as follows: Beginning at the southwestern corner of said Parcel, said point of beginning also being on a curve to the left having a radial line which bears South 65 ° 45' 31" East, a radius of 833.00 feet, a delta of 29°57'02"; thence northerly along the general western line of said Parcel and along said curve an arc length of 435.44 feet; thence continuing along last said western line, North 33°23'01" East, 18.32 feet; thence leaving said western line, South 03°11 '41" East, 121.78 feet to a curve to the left having a radius of 1066.00 feet, a delta of 17°39' 41"; thence along said curve an arc length of 328.59 feet to the southern line of said Parcel; thence along said southern line, North 89°25'59" West, 154.38 feet to the Point of Beginning. Containing: 0,50 Acres ± 21,680 sq. ft. ± Date ð 5- ð '1-J-4·ot ~l~ G:\ADMIN\JOBS-02\021 031 \SURVEY\MISSION TAKE,DOC I ß 9 ð{) wS- Silveria Ranch, LLC City of Dublin County of Alameda APN: 985 -0002-008-02 EXHIBIT A Page 9 of 13 Legal Description Real property situate in the City of Dublin, County of Alameda, State of California. Being a portion of Parcel 2 of Parcel Map No. 1193, filed September 16, 1974 in Book 84 of Parcel Maps, at Page 40, Official Records of Alameda County, described as follows: Parcel 1 Beginning at the eastern terminus of the general northwestern line, described as "North 89°51 '00" East, 175.23 feet" in the Quit-Claim Deed recorded on December 21, 1998 at Series No. 98447166, Official Records of Alameda County; thence along the general northwestern line, North 00°34'01" East, 102,53 feet to a non-tangent curve having a radial line which bears South 56°24'45"West, a radius of 1078.00 feet, a delta of 14°56'06"; thence leaving last said line, along said curve to the left an arc length of281.00 feet; thence South 48°31 '21" East, 633.31 feet to a curve to the left having a radius of2948.00 feet, a delta of 04°07'33"; thence along said curve an arc length of212.28 feet; thence South 53°00' 17" East, 145.77 feet to a non-tangent curve having a radial line which bears South 36°58'11" West, a radius of 1958,00 feet, a delta of 04°19'48"; thence along said curve to the left an arc length of 147.97 feet; thence South 57°24'28" East, 3.26 feet to the southern line of said Parcel 2; thence along said southern line, North 89°38'34" West, 189.10 feet to a non-tangent curve having a radial line which bears South 33°53 '10" West, a radius of2018.00 feet, a delta of 02°09'20"; thence northwesterly along said curve to the right an arc length 75.92 feet to a compound curve having a radius of3058.00 feet, a delta of 05°26'09"; thence northwesterly along said curve an arc length of290.12 feet; thence North 48°31 '21" West, 633.31 feet to a curve to the right having a radius of 1188.00 feet, a delta of 12°31 '26"; thence along said curve an arc length of 259.68 feet to said northwesterly line; thence along said northwesterly line South 89°25' 59" East, 62.10 feetto the Point of Beginning. Containing: 3.30 Acres ± 143,845 sq. ft. ± Parcel 2 Beginning at the southwesterly corner of said parcel 2; thence along the westerly line of said parcel, North 03°24'16" East, 201.02 feet to a curve to the right having a radius 967.00 feet, a delta of 53°29'20"; thence along said curve an arc length of902.75 feet; thence North 56°53'36" G:IADMIN\JOBS-02\021 031 \SURVEY\SIL VERIA T AKE,DOC /90 ~ zo5: East, 203,05 feet to a curve to the left having a radius of 833,00 feet, a delta of 09°08'30"; thence along said curve an arc length of 132.91 feet to the general northerly line of said parcel; thence along said northerly line, South 84°24'51" East, 124.76 feet to a non-tangent curve having a radial line which bears North 15°20'30" West, having a radius of219,OO feet, a delta of 10°26'56"; thence leaving said northerly line, southwesterly along said curve to the left an arc length of39,94 feet; thence South 64°11 '16" West, 320.78 feet to a curve to th~ left having a radius of789.00 feet, a delta of38°44'51"; thence along said curve an arc length of 533,58 feet to a compound curve having a radius of 1539.00 feet, a delta of 19°01 '47"; thence along said curve an arc length of 511.15 feet; thence South 85°23' 14" East, 3.00 feet to a non-tangent curve having a radial line which bears North 83°35'09" West, a radius of 1536,00 feet, a delta of 01 °48'05"; thence southerly along said curve to the left an arc length of 48,29 feet; thence South 04°36' 46" West, 70,29 feet; thence along the southerly line of said parcel 2 South 85°38'27" West, 6.44 feet to the Point of Beginning. Containing: 0.71 Acres ± 31,087 sq. ft, ± ~4A Charles Sellman L.S. 5186 () ~ -- () Lf -2vOL( Date ' G:IADM1N\JOBS-02\021 031 \SUR VEY\SIL VERIA T AKE,DOC ) q / òtJ -zD~ Nielsen City of Dublin County of Alameda APN: 985 -0002-009 EXHmIT A Page 10 of 13 Legal Description Real property situate in the City of Dublin, County of Alameda, State ofCalifomia. Being a portion of Parcel 1 as shown on Parcel Map No. 1193, filed September 16, 1974 in Book 84 of Parcel Maps, at Page 40, Series No. 2001-501015 Official Records of Alameda County, described as follows: Commencing at the northwestern corner of said Parcell; thence along the northern line of said Parcell, North 85°38'27" East, 33.31 feet to the Point of Beginning; thence from said Point of Beginning and continuing along said northern line, North 85°38'27" East, 6.44 feet; thence leaving said northerly line, South 04°36'46" West, 302.36 feet; thence North 03°24'16" East, 301.43 feet to the Point of Beginning. Containing: 0.02 Acres ± 961 sq. ft. ± /~~ tnãrles~Í1n!an L.S. 5186 Date o 5""" -. ð 1 - ;lvö1 G:\ADMIN\JOBS-02\021 031 \SURVEYlNELSON TAKE.DOC Jq7..%~ Arac City of Dublin County of Alameda APN: 985 -0002-006-01 EXHIBIT A Page 11 of 13 Legal Description Real property situate in the City of Dublin, County of Alameda, State of California. Being a portion ofthe Parcel as described in the deed to "Sabri Arac", recorded August 13, 1999, Series No. 99-310014, Official Records, Alameda County, described as follows: Beginning at the southwestern corner of said Parcel; thence along the westerly line of said Parcel, North 03°24'16"" East, 34.74 feet; thence leaving said westerly line, South 00°34'48" West, 34.44 feet to the southerly line of said Parcel; thence along said southerly line, South 82°07'31" West, 1.73 feet to the Point of Beginning. Containing: 29 sq. ft. ± ~~ Charles Sellman L.S. 5186 Date ð $'- ().q- :Loot :-~ .' ..-_.----~_._. G:\ADMlN\JOBS-021021 031 ISUR VEYlARAC TAKE,DOC /93 l5¿ wS Kobold City of Dublin County of Alameda APN: 985 -0002-005-01 APN: 985 -0002-005-02 EXHIBIT A Page 12 of 13 Legal Description Real property situate in the City of Dublin, County of Alameda, State of California. Being a portion of the Parcels as described in the deed to "Michael H. Kobold", recorded September 12,2001, Series No. 2001-347532 and April 19, 2002, Series No, 2002-173794, Official Records, Alameda County, described as follows: Beginning at the northwestern corner of said Kobold Parcel (Series No, 2002-173794); thence along the northerly line of said parcel, North 82°07'31" East, 1.73 feet; thence leaving said northerly line, South 00°34'48" West, 322,51 feet to the southerly line of said Parcel; thence along said southerly line, South 55°01 '21" West, 22.44 feet to the westerly line of said Parcel; thence along said westerly line, North 03°24'16" East, 335,71 feet to the Point of Beginning. Containing: 0.07 Acres ± 3,228 sq. ft. ± ~~ Charles Sellman L.S, 5180 Date A o f)- Ot - 2001' G:\ADMIN\JOBS-02\021031 \SURVEYlKOBOLD,DOC / c¡ t/ ~ 7D!;' Greiner City of Dublin County of Alameda APN: 985 ~002-007-01 EXHIBIT A Page 13 of 13 Legal Description Real property situate in the City of Dublin, County of Alameda, State of California. Being a portion of the Parcel as described in the Deed to "David B, Greiner", recorded October 15, 2002, Series Number 2002-466576, Official Records of Alameda County, described as follows: Beginning at the northwestern corner of said Parcel; thence along the northerly line of said Parcel, South 89°25'59" East, 154.38 feet to a non-tangent curve having a radial line which bears South 69°08'38" West, a radius of 1066,00 feet, a delta of 04°57'22"; thence leaving said northerly line, southeasterly along said curve to the left an arc length of 92.21 feet; thence South 64°11 '16" West, 12.00 feet to a non-tangent curve to the left, having a radial line which bears South 64°11' 16" West, a radius of 1078.00 feet, a delta of 07°46'31"; thence southeasterly along said curve an arc length of 146.29 feet to the easterly line of said parcel; thence along said easterly line, South 00°34'01" West, 102.53 feet to the southeasterly corner of said Parcel; thence along the southerly line of said Parcel, North 89°25'59" West, 62,10 feet to a non-tangent curve to the right having a radial line which bears South 54°00'05" West, a radius of 1188.00 feet, a delta of 05°28'25"; thence leaving said southerly line, northwesterly along said curve, an arc length of 113.49 feet; thence North 57°21' 12" West, 32.39 feet; thence South 64°11' 16" West, 141.71 feet to a curve to the right having a radius of237.00 feet, a delta of 11 °24'08"; thence along said curve an arc length of 47,16 to the beginning of a reverse curve having a radius of219,OO feet, a delta of 00°55'54"; thence along said reverse curve, an arc length of3.56 feet to said southerly line; thence along said southerly line, North 84°24'51" West, 124.76 feet to a non-tangent curve to the left having a radial line which bears South 42°14'54" East, a radius of 833.00, a delta of23°30'37"; thence northeasterly and northerly along said curve an arc length of 341,81 feet to the Point of Beginning. Containing: 1.79 Acres ± 78,151 sq. ft. ± ~~ Charles Sellman L.S. 5186 () :J - 0 f - J-otJLf G:\ADMIN\JOBS-021021 031 ISURVEY\GREINER T AKE.DOC '¡¡iI~ It· .' '.. . '.. .i..-!L. +-- _ _ _ I. ¡ i.' I.' I. \ ,!.! f 'I I II f II I i! j , ,!, I .f I !Q ~! ~ Ii! iO , ..,'0::... , , f , ! i: ~II~: t ~ '.¡ , if::( "I!! nj ~!I;~¡ ';'1 W' ~.i~I,! ID.'.' .!......' (() II ! !« j ~!!,I tl' ...... Ii I ~!¡'I; V) II . I- Z W :,jE Z (!) ::ï « õ) ,1111 ~ ~i~ ..~¡ .... ~o ' êÖ 'i co....J 0 .11 /1 - : => ~ Z -.:tii ~j«"Ow ~I¡ ;.... 0::>- ü 0" i ~ ~...... Z a1.! /1 èj) .¿ ~ « ~! (/)ü~ ii/'I ~1~ _ 97' j R,O,W PER ORDINANCE¡! J ~ NO, 20-99 ì J. 6~,1' ! rTL.f,"'.'.1 R,O,W, PER TRACT 6925 !~ ;: 1 J I DUBLIN RANCH ;, / MATCH LINE SEE SHEET 2 / r.,// / ~J ~// //wJ/' 17, 114 $flFr.:t (o.~go/ÂCR£S:t) ,/ ~ \ \ ~ ~ ~ "-, C:. :t .;. C) ~ ';'--C) <: ~~<:::;) J'-()f) ~ '(;Ô-,---- o! ~ '1'0) ... ~·T''--·' ~ 0')-"', 0"'-' ~ II ~ ! w9~ -J,t¡\. C!J C') "i ~ ..... "--' ceo.... ...°0 CD9 ° ILCDO ŒcoZ WO ~..CD -Zw Q.- ceffi CD ''f.. ,~ 'I.%~ "". EXHIBIT B PLAT TO ACCOMPANY LEGAL DESCRIPTION FOR TASSAJARA ROAD PRECISE PLAN ALIGNMENT CITY OF DUBIJN, ALAMEDA COUNTY, CALIFORNIA ¡1 ¥ ;~ ¡ ¡ ¡j f ¡ !~ IOd 10) , 1 I <:::;) ....'.' I ,...." I-J ........ III c:::) ¡~<:::;) .~ ~ 0) II ~Q:: ~ " c:::::¡ @ I I , SCALE: 1"=100' / q 5 tJ'6 wS- LINE L2 L3 LINE TABLE BEARING NS3°S4'16"E N78°S1 '39 "W DISTANCE 49.97' 31,29 ' LEGEND P.Q.B, POINT OF BEGINNING SQ,FT. SQUARE FEET - - NEW RIGHT OF WAY LINE .--- - --- EXISTING PROPERTY LINE ----- CONTROL LINE R,Q,W, RIGHT OF WAY -N- G"-_'\DoJoOn\T--.Joro"""- .....\PUIT I'DR TASSA.IHIAdoO "12V03 too31". 11M PDT Ruggerl- Jensen - ,^z:r &. Associates ~; ~A(~...',..,......~. '.'.~.......,.~.~.t........,..'... '...'.'.!.~...~.;... ~..... .. oJ ~:.f> .~ ~!, ,.~. ....~ U · ~; 4 i~ orrf;~~oc , 135,292 SQ.FT.% \,-,·····1J.U·'"ACRESZ)--···· S00034 '48'W 34. 44 ' (L 19) LINE L19 L20 L21 L22 L2 LINE TABLE BEARING S00034 '48'W S82°07'31 'W N03°24' 16 liE S55°0 1 '21 'W S53°54'16'W! DETAIL A NOT TO SCALE LEGEND P,Q,B. POINT OF BEGINNING (R) RADIAL SQ,FT, SQUARE FEET - - NEW RIGHT OF WAY LINE - - - - -- EXISTING PROPERTY LINE - - - - - CONTROL LINE R,Q,W, RIGHT OF WAY DISTANCE 34.44' 1,73' 34.74' 22.44 ' 54,42 ' -N- ....CD 910 IO~ 0.... 00 10 .1 OW ZOCD -0 . ..110 CDZ CD (I.) Ow ..æ Zw ~(I.) -- MATCH LINE EXHIBIT B PLAT TO ACCOMPANY LEGAL DESCRIPTION FOR TASSAJARA ROAD PRECISE PLAN ALIGNMENT CITY OF DUBLIN, ALAMEDA COUNTY, CALIFORNIA i .i or- j '0 1 ~~I '·;···a:-"I" 0 : "-'iE z! ~~ Wa:(I.) L " Zw / IL ;' :::::'::';1< (1.)/ 1; r~"v,'¡ ¡ ¡ rJ¡J / I 1 / I ¡ í ¡:''''\ ì ;,~~".) 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C'\/i ; :-'1i ¡ ~¡; (...1 , ~'í .1 rrT liMA TCH LINE kseš' SREET'·-2··", kT~- - - t- .---- EXHIBIT B PLAT TO ACCOMPANY LEGAL DESCRIPTION FOR TASSAJARA ROAD PRECISE PLAN ALIGNMENT CITY OF DUBIJN, ALAMEDA COUNTY, CALIFORNIA ~.,ø.'W«'- --.~..--- ""¡oo.,....-~. -- -="' LEGEND P ,0,8, POINT OF BEGINNING SQ,FT, SQUARE FEET - - NEW RIGHT OF WAY LINE ------- EXISTING PROPERTY LINE - - - - - CONTROL LINE R, 0, W, RIGHT OF WAY SCALE: 1"=100' DATE: 08-06-03 JOB NO,: 031055 PAGE: 3 OF 11 - - .-..-.- ., ~ . f 9::>" !t .^j ~ ~i ~ "" '51 ~ ~~.¡ C¡¡II~ ' ~. " II ~ PARŒJ. 2 31,087 SQ.FT.:t (0.71 ACR£S:t) /,,/ /< /< /// / /, //'... ",/,,/ //> :':/ SIL VERlA RANCH, LLC,./;»:/ APN: 986 -0002-00~~~:/"' SERIES NO. 98-4~~1~' /.... ./' /" ,....- ..,/'~:",/~// :// BRAGG & SILVA APN: 988 -0004-003 SERlþ-:::fR)';;:'83-333991 \\ ; \ , . LEGEND ,,\ \ " \' P,Q,B, POINT OF BEGINNING ~6'Oa" ,,¡ \ ( ) RADIAL ~ '1f''' !~ R .5'77~~6'~ " SQ.FT. SQUARE FEET {.? 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CALIFORNIA DATE: 08-06-03 JOB NO,: 031055 PAGE: 4 OF 11 SCALE: 1"=100' CURVE C1 CURVE TABLE RADIUS DELTA LENGTH 767.00' 8"54'01" 119.15' ,.., ¡: o~ 00 1 0 3' ~o~ ::]0- 1 o' l;f ClQ) ;i!w 0:./5 ~OJ 30,844 SQ.FT.:t (0,71 ACR£S:t) / <fi5§.er.:¡ 0 ' / ,--_VC? 48"W(R) ; D~OO"Ss'i8~.L-.== --~, \. Æ d,' ,,24.2.:; " -!L ~t¿¿== !.§g3,OO' \ N60"04'16'W::i!?)- , ~. \ CJb "/~ ",~~ ;1:- 8 "- (J/:- ~~I ~O, 4:'0 ;$ ~' ¡. JIG ~ ~ClQ) :!J ~. iii ;;j It IS ~OJ ... ~\) , ""- ~ \)\), " ~çs ~~. ~, if ~'ò ~'),' ~ ~, v PARCEL 2 JI,087 SfJ.FT.:t (0. 71 ACRES:t) .I; ::' /i/ / il/ / j l LEGEND //// :/ /" /' í P.Q,S, POINT OF!~,eJ~INNING (R) RADIAL //// SQ,FT. SQUA~Éi'itET / / ;' ! - - NEWRJ'ßblT OF WAY LINE I 1 ' ¡ -~----, EXISWG PROPERTY LINE (.' t ; - - - - - COt4,ifRÓL LINE ,..' ; , RJGílf/ OF WAY /;/// \. \. MÃTcHi,NE SEE SHEET 40 EXHIBIT B PLAT TO ACCOMPANY LEGAL DESCRIPTION FOR TASSAJARA ROAD PRECISE PLAN ALIGNMENT CITY OF DUBLIN, ALAMEDA COUNTY, CAIJFORNIA R,Q,W, SCALE: 1"=100' DATE: 08-06-03 JOB NO.: 031055 PAGE: 5 OF 11 LEGEND P,Q.B, POINT OF BEGINNING P,Q.C, POINT OF COMMENCEMENT - - NEW RIGHT OF WAY LINE ----- EXISTING PROPERTY LINE - - - - - CONTROL LINE (R) RADIAL SQ,FT, SQUARE FEET R,Q,W, -- ~(J ~. ~ ~ f'J" "'" 0 c/! ~~Øl ' o~ti ~ .:fa? ~' ~ 'r § 'J i1!o o· '" A ~ ...J 4:. æ;¡~ V '" ~~ f'J i14:.W 9'J ~~ ~ Gf $6'9·/'1 ~-~8J8'h1 II ~ ---~'V ~. ,V) ~" .....~.. ""5 ~ 503"11 '41 liE 121.78' 21,680 SQ.FT.:t (0.50 ACR£S:t) LINE L6 L7 U2 U3 U4 DISTANCE 32.22' 48,77' 12,00' 32.39' 18.32' ~ NOO"34'01 liE 102,53' .... .... _,- ?W(R) SIL VERlA RANCH. LLC _56"244 APN: 986 -0002-008-02 5 SERIES NO, 98-447188 "- "- '\.'\. '\.'\. '\.'\. - '\. ' , CURVE C2 C3 C4 C5 C6 CURVE TABLE RADIUS DELTA LENGTH 830.00' 2'20'30" 33,92' 1078.00' 7'46'31" 146,29' 237.00' 11'24'08" 47,16' 219.00' 0'55'54" 3.56' 219.00' 10·26'56" 39.94' SEE SHEET 10 N89"25 '59 'W 62,10' EXHIBIT B PLAT TO ACCOMPANY LEGAL DESCRIPTION FOR TASSAJARA ROAD PRECISE PLAN ALIGNMENT CITY OF DUBUN. ALAMEDA COUNTY. CALIFORNIA DATE: 08-06-03 JOB NO,: 031055 PAGE: 6 OF 11 SCALE: 1"=100' LINE TABLE LINE ¡ BEARING L9 ! S88i:iJ'06 "w L8 / S3J-Þ3'01 'W L 16/ S3ß123'01''W I , ¡ f , , (1.81 ACRESr) I ¡ MOLLER TRUST/ APN: 986 -0001-001 . SERIES NO. 97-0184908 ! DISTANCE 28, 11 ' 76.22 ' 53.45 ' ,,/ / //-<;/~~~~ ~ ...~ "",......'k~; . ~ _nl.ft~::t ,,/ ' :"' 0" , .ctA ~'~) / ' 6'" ~~ ~ ~,,/ ø ~" þ.,\,¡I' ',' '\/ '0 (0.49 " " /' ö. , Ó· ~." /" ~G~9 .-09~~ ~~ ,,~ ~Q~9~ rr),'!'O'q\, ///"~~' ^&~// ,/&1\ ~ \. /'y/ / i 0 ~W w ø'·' ..' £3 ~~",\~9 .// 'p ,Q\ '/~~~~\': \'/, ..~{ /i ;:,_",. \, '/;~~&p'~o;:>é, t") ",/ / t1~;~/ , ' £l ¡, /,/" ,/~~/:/' P~J?C / /:/'.' Z /(;,¿~;?/ <\'f~~.f1.::t // 40:61. 4 ..a~<) 'f , ..~ þ.,\II.t.;r- (0.2;\ ~ ~ ,,~ "fA) q" ~~Q~ \P CP~"'of- ~O '" ~ . ÐQ a cPcP. ~ ~ h'" \P 7Z Q .. LEGEND P,Q,S, POINT OF BEGINNING (R) RADIAL 5Q.FT, SQUARE FEET - - NEW RIGHT OF WAY LINE __.'_4~_, EXISTING PROPERTY LINE - - - - - CONTROL LINE R,Q,W. RIGHT OF WAY \\ \ \ ~c~ rz..-o'lJ ''''~o~ ".-00 ~1 te .-0009Ÿ'\'\rz.S ~~ ~ ~O. ~ 9~~\~9 EXHIBIT B PLAT TO ACCOMPANY LEGAL DESCRIPTION FOR TASSAJARA ROAD PRECISE PLAN ALIGNMENT CITY OF DUBUN. ALAMEDA COUNTY. CAlJFORNIA SCALE: 1" 100' JOB NO,: 031055 PAGE: 7 OF 11 MATCH LINE SEE SHEET 9 J,O?-L"ò g-oS- ----------- \ ,'~ Þ~ÐO 'b ,0 ..ttJ\ 0" Þ" ,,1 " g: a ;" ; ~~ ,tJ ~ / g,fb o. . ~ ~ ~. ~ ~~ ~ ;' , , , i , ~"'~~~~.."..,~~~" '''''''' ') ·····,·~c:::··.,... -'n...~' -- EXHIBIT B PLAT TO ACCOMPANY LEGAL DESCRIPTION FOR TASSAJARA ROAD PRECISE PLAN ALIGNMENT CITY OF DUBLIN. ALAMEDA COUNTY, CAliFORNIA EX/STING R,O,W. LEGEND P.Q,S, POINT OF BEGINNING (R) RADIAL 5Q.FT, SQUARE FEET - - NEW RIGHT OF WAY LINE ----.-~-- EXISTING PROPERTY LINE - - - - - CONTROL LINE R,Q,W, RIGHT OF WAY MOLLER TRUST APN: 985 -0001-001 '" Go\.lolllGll2__,r....,oI'O.\ProdH PIsn\PU\T f'DR TIISSA.MItA.dwg 118122103 _ NI PDT SCALE: 1"=100' DATE: 08-06-03 JOB NO,: 031055 PAGE: 8 OF 11 '''''''''", " ->,,'.......~.......... LINE TABLE LINE BEARING L 11 S07"47'16''W L 10 N23"S8'S9''W DISTANCE 32,59' 136.84' . Ì" f iY ,\). fJ \)\) .,\) ~ro ~r;j ~ kv \i çt ~J t;f ......",~ ". "......,'.... Co ',.., 'I~. ~.",.,.,' "'..,...'" TIPPER APN: 988 -0004-001 SERIES NO. 98-018417 MOLLER TRUST APN: 986 -0001-001 SERIES NO. 97-0184908 "" S55"0 1 '20 'W{B I p. 0, B. \..... / / U',_ <:::::>, "'-.;, '-Ii LEGEND P,Q.B, POINT OF BEGINNING P,Q,C, POINT OF COMMENCEMENT EX/STING (R) RADIAL R.O,W. CH LINE - - SQ,FT, SQUARE FEET SHEET 8 - - NEW RIGHT OF WAY LINE ~-,,~ - EXISTING RIGHT OF WAY LINE - - - - - CONTROL LINE R,Q, W. RIGHT OF WAY ", .,.,...... 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