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Home My WebLink AboutMINUTES - 04082008 - C.1 TO: BOARD OF SUPERVISORS Contra FROM: JULIE R. BUEREN, PUBLIC WORKS DIRECTOR ` Costa y DATE: April 8, 2008 °'s;A�oi;K'c, County SUBJECT: ADOPT the Alhambra'Valley Road Pedestrian Bridge Mitigated Negative Declaration and Mitigation Monitoring Program, Martinez area. (Prop 1B Funds) (District H) [CDD-CP# 07-59] Project No.: 0662-6R4059 SPECIFIC REQUEST(S)OR RECOMMENDATION(S)&BACKGROUND AND JUSTIFICATION RECOMMENDED ACTION: FIND on the basis of the Alhambra Valley Road Pedestrian Bridge project Mitigated Negative Declaration initial study and all comments received, that there is no substantial evidence the project will have a significant effect on the environment, and ADOPT the Mitigated Negative Declaration and Mitigation Monitoring Program in compliance with the California Environmental Quality Act(the custodian of which is the Community Development Director who is located at 651 Pine Street, Martinez), and DIRECT the Director of Community Development to file a Notice of Determination with the County Clerk, and Continued on Attachment: ® SIGNATURE: RECOMMENDATION OF COUNTY ADMINISTRATOR ❑ RECOMMENDATION OF BOARD COMMITTEE 0,<PPROVETHER SIGNATURE(S): ACTION OF BDON O APPROVED AS ECOMMENDEU 6THER ❑ V TE OF SUPERVISORS UNANIMOUS(ABSENT I hereby certify that this is a true and correct copy of an action AYES: NOES: taken and entered on the minutes of the Board of Supervisors on ABSENT: ABSTAIN: the date shown. G:\EngSvc\ENVIRO\BO\2008\478-08 � /De / Q G:\EngSvc\ENVIRO\BO\2008\4-8-08 CEQA-Alhambra Valley Rd Ped Bridge-BO.docATTESTED: I/ /�'C.J Orig.Div:Public Works(Environmental Section) JOHN CULLEN,CLERK OF THE BOARD OF SUPERVISORS Contact: L.Chavez, —Attn. AND COUNTY ADMINISTRATOR cc: Administrator or E.Kuevor ' Auditor-Controller H.Li,Community Development Public Works: Construction By ,Deputy Design-A.Anaya Environmental—T."Torres SUBJECT: ADOPT the Alhambra Valley Road Pedestrian Bridge Mitigated Negative Declaration and Mitigation Monitoring Program, Martinez area. (Prop 1B Funds) (District H) [CDD-CP# 07-59] Project No.: 0662-6R4059 DATE: April 8, 2008 PAGE: 2 of 2 RECOMMENDED ACTION (continued): AUTHORIZE the Public Works Director to arrange for payment of a $25 fee to Community Development for processing, and a$50 fee to the County Clerk for filing the Notice of Determination, and DIRECT the Public Works Director to arrange for the $1,876.75 Fish and Game filing fee to be transferred to the County Clerk, and APPROVE the Alhambra Valley Road Pedestrian Bridge project, and AUTHORIZE the Public Works Director to advertise the project. FISCAL IMPACT: The estimated project cost is $191,000 funded by Prop 1 B Funds (100%). REASONS FOR RECOMMENDATIONS AND BACKGROUND: The project is needed in order to provide pedestrian access along this section of Alhambra Valley Road. The project consists of construction of a 5-foot wide asphalt concrete path separated from the road; installation of a 12" corrugated steel pipe culvert 24 feet in length for drainage purposes, reconnection of an existing High Density.Polyethylene (HDP) Pipe and reestablishment of original grade over the pipe, and installation of a prefabricated freespan steel pedestrian bridge across Arroyo Del Hambre Creek. The project length is approximately 300 feet; 80 feet of which is the prefabricated bridge. The poured concrete bridge abutments will be located behind the top of bank so as to minimize disturbance to the creek. Currently, storm water runoff from Alhambra Valley Road is conveyed to Arroyo Del Hambre Creek by a roadside drainage ditch. The existing drainage pattern will be maintained with the roadside drainage ditch separating the road from the proposed pedestrian path. At least one travel lane will remain open at all times for the duration of the construction except during installation of the prefabricated bridge, which will require a brief road closure. Craning the bridge into place will take a maximum of two days. Road closure will only occur between the hours of 7:00 am and 5:00 pm and the road will be reopened each night. The closure is expected to occur in the summer months when school is not in session. Utility relocation, temporary utility shut down, and real property transactions, including temporary construction easements may be necessary in support of this project. The project has been determined to be in compliance with the General Plan. A Mitigated Negative Declaration of environmental significance pertaining to this project was published on February 12,2008. The Board has considered the Mitigated Negative Declaration together with all comments received during the public review period. CONSEQUENCES OF NEGATIVE ACTION: Delay in approving the project will result in a delay of design and construction and may jeopardize funding. Contra PUBLIC WORKS DEPARTMENT Costa INITIAL STUDY OF County ENVIRONMENTAL SIGNIFICANCE PROJECT NAME: Alhambra Valley Road Pedestrian Bridge Project PROJECT#: 0662-6R4059 .' CP #: 07-59 PREPARED BY: Leigh Chavez L7--) DATE: January 8, 2008 APPROVED BY: � DATE: RECOMMENDATIONS: ❑ Categorical Exemption ( ) ❑ Negative Declaration ❑ Environmental Impact Report Required ® Mitigated Negative Declaration The project will not have a significant effect on the environment. The recommendation is based on the following:There is no substantial evidence that the project or any of its aspects may cause a significant effect on the environment (Sec. 15063(b)(2)). What changes to the project would mitigate the identified impacts: N/A USGS Quad Sheet: Briones Valley Base Map Sheet#: H - 12 Parcel #: NIA. GENERAL CONSIDERATIONS: 1. Location:The project is located along Alhambra Valley Road,between Millthwait Drive and Wanda Way in the Martinez area (Figures 1- 4). 2.Project Description: The proposed Alhambra Valley Road Pedestrian Bridge project consists of construction of a 5-foot wide asphalt concrete path separated from the road; installation of a 12"corrugated steel pipe culvert 24 feet in length for drainage purposes, reconnection of an existing High Density Polyethylene (HDP) Pipe and reestablishment of original grade over the pipe, and installation of a prefabricated freespan steel pedestrian bridge across Arroyo Del Hambre Creek. The project length is approximately 300 feet; 80 feet of which is the prefabricated bridge. The poured concrete bridge abutments will be located behind the top of bank so as to minimize disturbance to the creek. Currently, storm water runoff from Alhambra Valley Road is conveyed to Arroyo Del Hambre Creek by a roadside drainage ditch.The existing drainage pattern will be maintained with the roadside drainage ditch separating the road from the proposed pedestrian path. At least one travel lane will remain open at all times for the duration of the construction except during installation of the prefabricated bridge,which will require a brief road closure. Craning the bridge into place will take a maximum of two days. Road closure will only occur between the hours of 7:00 am and 5:00 pm and the road will be reopened each night. The closure is expected to occur in the summer months when school is not in session; however if the installation must occur when school is in session,contract specifications will require installation of the bridge on a weekend to avoid impacts to school-age children and their families. G:\EngSvc\ENVIRO\TransEng\Alahambra My Rd Pedes&Bridge Poj\CEQA\Initial Study Final.doc Utility relocation, temporary utility shut down, and real property transactions, including temporary construction easements may be necessary in support of this project. 3. Does it appear that any feature of the project will generate significant public concern? ❑ yes ® no ❑ maybe (Nature of concern): 4. Will the project require approval or permits by other than a County agency? ® yes ❑ no (Agency Name/s); California Dept. of Fish & Game 5. is the project within the Sphere of Influence of any city? No G:\EngSvc\ENViRO\TransEng\Atahambra My Rd Pedes&Bridge Poj\CEQA\initial Study Final.doc r � W � a a O � 10 r P a� L IL r y y N • (0 C/) cc ld co A o. � O ^ .. .... ...r.,�. .'.::.... ,.:..,-a--..., u:.l•..� .. a Z •tet - ''�. Si Via. ............. ........... IN u frj-I.. R. R N 17 ,1i 1.F- U_ W 9, 1",(U.. 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"r;?�`(-, ,:ei':J�;•:= •, �',- }�'" - ?:moi Ir 1. :,YdJ n r .r '^"`''' ; +�►.. . �; :' .:.«. !sig - 'Y7. 7".1+� /t��'i>`a'=.:;',' -?` .7 ' -iii' ::; � -I'1:' e;'' :',:�{.. a•:::,T`.».• :, d, , J1� CALIFORNIA ENVIRONMENTAL QUALITY ACT NOTICE OF DETERMINATION CONTRA COSTA COUNTY COMMUNITY DEVELOPMENT DEPARTMENT 651 PINE STREET 4TH FLOOR NORTH WING MARTINEZ, CALIFORNIA 94553-0095 Telephone: (925) 313-2366 Contact Person: Leigh Chavez, Planner III Project Title, Description, Common Name (if any) and Location: Alhambra Valley Road Pedestrian Bridge Project, Project No. 0662-6R4059 CP# 07-59. The proposed Alhambra Valley Road Pedestrian Bridge project consists of construction of a 5-foot wide asphalt concrete path separated from the road; installation of a 12" corrugated steel pipe culvert 24 feet in length for drainage purposes, reconnection of an existing High Density Polyethylene (HDP) Pipe and reestablishment of original grade over the pipe, and installation of a prefabricated freespan steel pedestrian bridge across Arroyo Del Hambre Creek. The project length is approximately 300 feet; 80 feet of which is the prefabricated bridge. The poured concrete bridge abutments will be located behind the top of bank so as to minimize disturbance to the creek. Currently, storm water runoff from Alhambra Valley Road is conveyed to Arroyo Del Hambre Creek by a roadside drainage ditch. The existing drainage pattern will be maintained with the roadside drainage ditch separating the road from the proposed pedestrian path. At least one travel lane will remain open at all times for the duration of the construction except during installation of the prefabricated bridge,which will require a brief road closure. Craning the bridge into place will take a maximum of two days. Road closure will only occur between the hours of 7:00 am and 5:00 pm and the road will be reopened each night. The closure is expected to occur in the summer months when school is not in session. Utility relocation, temporary utility shut down, and real property transactions, including temporary construction easements may be necessary in support of this project. Project location: The project is located along Alhambra Valley Road,between Millthwait Drive and Wanda Way in the Martinez area. Pursuant to the provisions of the California Environmental Quality Act: ❑ An Environmental Impact Report was prepared and certified (SCH #_) ❑ The Project was encompassed by an Environmental Impact Report previously prepared for_(SCH #_). ® A Mitigated Negative Declaration was prepared following identification of a.potentially significant impact Copies of the record of project approval and the Mitigated Negative Declaration may be examined at the office of.the Contra Costa County Public Works Department. ® The Project will not have a significant environmental effect with mitigation measures incorporated. ❑ The Project will have a significant environmental effect. ❑ Mitigation measures were made a condition of approval of the project. ❑ A mitigation reporting or monitoring plan was adopted for this project. ❑ A statement of Overriding Considerations was adopted. ❑ Findings were adopted pursuant to Section 15091 of the State CEQA Guidelines. ❑ A mitigation reporting or monitoring plan was adopted for this project. Date: By: Community Development Department Representative AFFIDAVIT OF FILING AND POSTING I declare that on I received and posted this notice as required by California Public Resources Code Section 21152(c). Said notice will remain posted for 30 days from the filing date. Signature Title Applicant: Department of Fish and Game Fees Due Nblie Works Denartment. ❑ EIR - $2.500 Total Due: $ 255 v .lacler Drive " Neg. Dec. - 1,000 otai 1"ai.r .0 Martinez, CA 94553 ❑ DeMinimis Findings - $0 Attn• i .P;ah ChnvP,7 ISZI ('nnnty Clerk _ SSD Receint.#: CALIFORNIA ENVIRONMENTAL QUALITY ACT NOTICE OF DETERMINATION CONTRA COSTA COUNTY COMMUNITY DEVELOPMENT DEPARTMENT 651 PINE STREET 4TH FLOOR NORTH WING MARTINEZ,CALIFORNIA 94553-0095 Telephone: (925)313-2366 Contact Person: Leigh Chavez,Planner III Project Title, Description, Common Name (if any) and Location: Alhambra Valley Road Pedestrian Bridge Project, Project No. 0662-6114059, CP# 07-59. The proposed Alhambra Valley Road Pedestrian Bridge project consists of construction of a 5-foot wide asphalt concrete path separated from the road; installation of a 12" corrugated steel pipe culvert 24 feet in length for drainage purposes, reconnection of an existing High Density Polyethylene (HDP) Pipe and reestablishment of original grade over the pipe, and installation of a prefabricated freespan steel pedestrian bridge across Arroyo Del Hambre Creek. The project length is approximately 300 feet; 80 feet of which is the prefabricated bridge. The poured concrete bridge abutments will be located behind the top of bank so as to minimize disturbance to the creek. Currently, storm water runoff from Alhambra Valley Road is conveyed to Arroyo Del Hambre Creek by a roadside drainage ditch. The existing drainage pattern will be maintained with the roadside drainage ditch separating the road from the proposed pedestrian path. At least one travel lane will remain open at all times for the duration of the construction except during installation of the prefabricated bridge,which will require a brief road closure. Craning the bridge into place will take a maximum of two days. Road closure will only occur between the hours of 7:00 am and 5:00 pm and the road will be reopened each night. The closure is expected to occur in the summer months when school is not in session. Utility relocation, temporary utility shut down, and real property transactions, including temporary construction easements may be necessary in support of this project. Project location: The project is located along Alhambra Valley Road,between Millthwait Drive and Wanda Way in the Martinez area. Pursuant to the provisions of the California Environmental Quality Act: ❑ An Environmental Impact Report was prepared and certified (SCH #_) ❑ The Project was encompassed by an Environmental Impact Report previously prepared for_(SCH #_). ® A Mitigated Negative Declaration was prepared following identification of a potentially significant impact Copies of the record of project approval and the Mitigated Negative Declaration may be examined at the office of the Contra Costa County Public Works Department. ® The Project will not have a significant environmental effect with mitigation measures incorporated. ❑ The Project will have a significant environmental effect. ❑ Mitigation measures were made a condition of approval of the project. ❑ A mitigation reporting or monitoring plan was adopted for this project. ❑ A statement of Overriding Considerations was adopted. ❑ Findings were adopted pursuant to Section 15091 of.the State CEQA Guidelines. ❑ A mitigation reporting or monitoring plan was adopted for this project. Date: By: Community Development Department Representative AFFIDAVIT OF FILING AND POSTING I declare that on I received and posted this notice as required by California Public Resources Code Section 21152(c). Said notice will remain posted for 30 days from the filing date. Signature Title Applicant: Department of Fish and Game Fees Due Public Works Department ❑ EIR - $2.500 Total Due: $ 255 Glacier Drive ® Neg. Dec. - $1,800 Total Paid $ Martinez, CA 94553 ❑ DeMinimis Findings - $0 A tfn• T ainh Phoava-y 17 rnnnty I-IPYII - COW Receint#: "" •o � � obi a p •O•O G C, `� ca CS lw Y O r as .•O ,,; ,,-.,.. U• �s ? cd r td R c3 r T 7 v{S U Cd cd O cs Jo v 0 w eco � ✓ r cd tNa) • sem• Nr Y N G cn G O './ y y `� d CA td r/1 •C ^CS p v W O N O {� L 9 OJ G 9 N n czs> a Cd y Ca ?s R46 is R p co o> V Gag 9 16 N O v G � R cd G Y � 0 0 Nca 9- G r cd ✓ v ✓y tom, ° cd Y R ° G w Lj 3 i- �a S 7 cis ' 41 Gtj es "Vol cd f� cd O A r tD U O es CYC r� tZ N 'cl �41 4;5 t) 66 td 0 0 ol P cd Environmental Checklist Form 1. Project Title: Alhambra Valley Road Pedestrian Bridge Project 2. Lead Agency Name and Address: Contra Costa County Community Development Department 651 Pine Street Martinez, CA 94553 3. Contact Person and Phone Number: Leigh Chavez,Planner III (925) 313-2366 Contra Costa County Public Works Department 255 Glacier Drive Martinez, CA 94553 4. Project Location: The project is located in unincorporated Contra Costa County, along Alhambra Valley Road, between Millthwait Drive and Wanda Way in the Martinez area. 5. Project Sponsor's Name and Address: Contra Costa County Public Works Dept. 255 Glacier Drive Martinez, CA 94553 6. General Plan Designation: Public/Semi-public 7. Zoning: Existing Arterial 8. Project Description: The proposed Alhambra Valley Road Pedestrian Bridge project consists of construction of a 5-foot wide asphalt concrete path separated from the road; installation of a 12" corrugated steel pipe culvert 24 feet in length for drainage purposes, reconnection of an existing High Density Polyethylene (HDP) Pipe and reestablishment of original grade over the pipe, and installation of a prefabricated freespan steel pedestrian bridge across Arroyo Del Hambre Creek. The project length is approximately 300 feet; 80 feet of which is the prefabricated bridge. The poured concrete bridge abutments will be located behind the top of bank so as to minimize disturbance to the creek. Currently, storm water runoff from Alhambra Valley Road is conveyed to Arroyo Del Hambre Creek by a roadside drainage ditch. The existing drainage pattern will be maintained with the roadside drainage ditch separating the road from the proposed pedestrian path. At least one travel lane will remain open.at all times for the duration of the construction.except during installation of the prefabricated bridge, which will require a brief road closure. Craning the bridge into . place will take a maximum of two days. Road closure will only occur between the hours of 7:00 am and 5:00 pm and the road will be reopened each night. The closure is expected to occur in the summer months when school is not in session. Utility relocation, temporary utility shut down, and real property transactions, including temporary construction easements may be necessary in support of this project. G:\EngSvc\ENVIRO\TransEngWlahambra My Rd Pedes&Bridge Poj\CEQA\CEQAChkLstFinal.doc Page 1 of 17 DETERMINATION On the basis of this initial evaluation: I find that the proposed project COULD NOT have a significant effect on the environment, and a NEGATIVE DECLARATION will be prepared. I find that although the proposed project could have a significant effect on the environment,there will not be a significant effect in this case because the mitigation measures described.on an attached sheet have been added to the project. A ✓ MITIGATED NEGATIVE DECLARATION will be prepared. I find that the proposed project MAY have a significant effect on the environment, and an ENVIRONMENTAL IMPACT REPORT is required.. I find that the proposed project MAY have a significant effect(s).on the environment, but at least one effect(1) has been adequately analyzed in an earlier document pursuant to applicable legal standards, and (2) has been addressed by mitigation measures based on the earlier analysis as described on attached sheets, if the effect is a "potentially significant impact" or "potentially significant unless mitigated." An ENVIRONMENTAL IMPACT REPORT is required,but it must analyze only the effects that remain to be addressed. I find that although the proposed project could have a significant effect on the environment, 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 applicable standards and (b)have been avoided or mitigated pursuant to that earlier EIR,including revisions or mitigation measures that are imposed upon the.proposed project. Signature Date Contra Costa County Community P P Development Department Print Name SOURCES In the process of preparing the Checklist and conducting the evaluation, the following references (which are available for review at the Contra Costa County Community Development Department, 651 Pine Street 5th Floor- North Wing, Martinez)were consulted: 1. .The (Reconsolidated) County General Plan (July 1996) and EIR on the General Plan (January 199 1) 2. Contra Costa County Important Farmland Map 1999, California Department of Conservation Division of Land Resources Protection. 3. Field reviews by Public Works staff and Project Description (including coordination with Design Engineer). 4. Biological Resource Assessment, Alhambra Valley Road Pedestrian Bridge Project, Contra Costa County, California. Prepared by WRA Environmental Consultants for Contra Costa County Public Works Dept. August 30, 2007. 5. Archaeological Survey and Cultural Resources Assessment for the Alhambra Valley Road Pedestrian Bridge Project, including a September 06, 2007 Letter from the Northwest Information Center to Leigh Martin,prepared by William Self Associated, September 12, 2007. 6. Contra Costa County Flood Insurance Rate Zone Information Map, 2001 G:\EngSvc\ENVIRO\TransEng\Alahambra Vly Rd Pedes&Bridge Poj\CEQA\CEQAChkLstFinal.doc Page 3 of 17 Potentially Significant Potentially Unless Less than Significant Mitigation Significant Impact Incorporation Impact No Impact Farmland Mapping and Monitoring Program of the California Resources Agency, to non- agricultural use? b. Conflict with existing zoning for agricultural use, or a Williamson Act contract? ✓ c. Involve other changes in the existing environment, which, due to their location or nature, could result in conversion of Farmland, to non- agricultural use? ✓ SUMMARY: No Impact. The project will not affect any locally or statewide important farmland. The land immediately adjacent to the project consists of a roadway and residential areas. The Contra Costa County Important Farmland Map (1988) identifies the project as being entirely within an area designated as "Urban and Built-up Land". In addition, the County Resource Mapping System did not identify any agricultural preserves in the immediate area. Potentially Significant Potentially Unless Less. . than Significant Mitigation Significant Impact Incorporation Impact No Impact III AIR QUALITY. Where available, the significance criteria established by the applicable air quality management .or air pollution control district may be relied upon to make the following determinations. Would the project: a. Conflict with or obstruct implementation of the applicable air quality plan? ✓ b. Violate any air quality standard or contribute to an existing or projected air quality violation? ✓ 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)? ✓ d. Expose sensitive receptors to substantial pollutant concentrations? ✓ e. Create objectionable odors affecting a substantial number of people? ✓ SUMMARY: Less Than Significant Impact. Short-term emissions and objectionable odors may be generated during construction; however,they will be minor and temporary. The minor temporary deterioration of ambient air quality during construction will end once construction is completed; therefore, there will be no potentially adverse long-term impacts to air quality. If warranted during construction, the site will be watered to ensure fugitive dust is controlled. G:%EngSvc%ENVIRO%TransEng\Alahambra Vly Rd Pedes&Bridge Pol\CEQAICEQAChkLstFinal.doc Page 5 of 17 No other special status wildlife species were determined to have the potential to occur in the project area. Although Arroyo del Hambre Creek has a fairly dense riparian canopy for much of its length, riparian vegetation in the immediate project area is sparse and the majority of the vegetation consists of non-native trees including walnuts and ornamental shrubs. A total of two native, one non-native and one unidentifiable snag tree larger than 4" dbh will be removed from the riparian zone as a result of the project. These riparian trees slated for removal that are larger than 4" dbh include a 4.5" dbh willow (native), a 10" dbh California bay laurel (native), a 5" dbh walnut (non-native) and a 10" dbh unidentifiable ivy-covered snag (likely dead based on the complete coverage by ivy). Mitigation Measure Bio-2: Mitigation for these trees will be accomplished through a payment to a local land trust. The land trust will plant, maintain (for three years) and monitor (for five years) eight native riparian trees (3:1 ratio for the native willow and bay, and 1:1 ratio for the non-native walnut and unidentifiable snag). In addition, a clump of giant reed (Anindo donax), a highly invasive non-native pest plant, will be removed during project construction. The removal will occur by hand to ensure impacts to the creek are avoided. Department staff will be present at the project site during tree removal to ensure the number of trees removed is documented for mitigation purposes. Orange construction fencing will be installed to delineate the limits of construction. The fencing will serve to isolate environmentally.sensitive areas (ESAs) from construction activities. The ESA fencing will be installed at the expected limits of construction impact as delineated on the construction plans. In order to minimize damage to additional trees that may be affected by construction, contract specifications will include protective measures such as clean trimming of roots and limbs. Areas exposed as a result of the grading activities, will be seeded with a mix including native grasses and wildflowers. Potentially Significant Potentially Unless Less than Significant Mitigation Significant Impact Incorporation Impact No Impact V. CULTURAL RESOURCES. Would the project: a. Cause a substantial adverse change in the significance of a historical resource as defined in §15064.5? ✓ b. Cause a substantial adverse change in the significance of an archaeological resource pursuant to §15064.5? ✓ c. Directly or indirectly destroy a unique paleontological resource or site or unique geologic feature? ✓ Disturb any human remains,including those interred outside of formal cemeteries? ✓ SUMMARY: Less Than Significant Impact. According to the Archaeological Survey and Cultural Resources Assessment conducted for the project by William Self Associates (WSA, September 12, 2007), the results of the record search (Northwest Information Center at Sonoma State University) and visual inspection of the project site G:\EngSvc\ENVIRO\TransEng\Alahambra My Rd Pedes&Bridge Poj\CEQA\CEQAChkLstFinal.doc Page 7 of 17 Potentially Significant Potentially Unless Less than Significant Mitigation Significant Impact Incorporation Impact No Impact VII. 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? ✓ 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? ✓ c. Emit hazardous emissions or handle hazardous or acutely hazardous materials, substances, or waste within one-quarter mile of an existing or proposed school? ✓ d. Be located on a site which is included on a list of hazardous materials sites compiled pursuant to Government Code Section 65862.5 and, as a result,would it create a significant hazard to the public or the environment? ✓ e. For a project located within an airport land use . plan or,where such a plan has not been adopted, within two miles of a public airport or public use airport, would the project result in a safety hazard for people residing or working in the project area. ✓ f. For a project within the vicinity of a private airstrip, would the project result in a safety hazard for people residing or working in the project area? ✓ g. Impair implementation of or physically interferes with an adopted emergency response plan or emergency evacuation plan? ✓ h. Expose people or structures to a significant risk of loss, injury or death involving wildland fires, including where wildlands are adjacent to urbanized areas or where residences are intermixed with wildlands? ✓ SUMMARY: Less Than Significant Impact. The project has the potential to release hazardous substances, such as accidental petroleum spills from equipment, during construction. However,per the contract specifications, standard construction safety practices will be followed during construction to ensure no accidental release of hazardous substances occurs and no increase in the potential for exposure to these substances occurs. The contractor will be required to have on-site the appropriate materials to rapidly clean up any spills. Heavy equipment will operate at the top of bank and all service and fueling of vehicles will occur well outside of the stream channel. . G:\EngSvc\ENVIRO\TransEnglAlahambra Vly Rd Pedes&Bridge Poj\CEQA\CEQAChkLstFinal.doc Page 9 of 17 In order to avoid water quality impacts, the project has been designed to minimize potential impacts to the creek. The pedestrian bridge will freespan the creek with no footings necessary within the creek itself. In addition, the bridge abutments will be installed beyond the top of bank. Construction of the project will not adversely affect the quantity or quality of surface water, ground water or public water supply. Measures will be undertaken in the design and construction of the project to avoid adverse impacts to water quality. Contract specifications will require the installation of silt fencing or other effective sediment barrier below the excavation limits to prevent soil from entering the creek due to construction activities. Contract specifications will require the storage, servicing and fueling of construction equipment away from the creek. Standard construction safety practices will be incorporated into the project to reduce the possibility of a spill of gasoline, oil, or other pollutant that could have a significant impact on water quality. In addition, stockpiled materials will be located far enough from the banks of the channel to prevent construction materials from entering the creek. Potentially Significant Potentially Unless Less. than Significant Mitigation Significant Impact Incorporation Impact No Impact IX. LAND USE AND PLANNING. Would the project: a. Physically divide an established community? ✓ 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, local coastal program, or zoning ordinance) adopted for the purpose of avoiding or.mitigating an environmental effect? ✓ c. Conflict with any applicable habitat conservation plan or natural community conservation plan? ✓ SUMMARY: No Impact. The project will not result in a substantial alteration of the present or planned land use of the area.The project area is an existing roadway and the additional project work that will be conducted (e.g., bridge installation, AC pedestrian path construction, drainage improvement works, etc.) will not modify the current land use in those areas. The work will not result in an increase in population, displacement of people, or create a demand for additional housing. X. 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? ✓ 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? ✓ SUMMARY: Less Than Significant Impact. Construction and operation of the project would not involve quarrying, mining, or extraction of any known regionally or locally important mineral, oil, or gas resources on site, nor would it deplete any non-renewable G:\EngSvc\ENVIRO\TransEng\Alahambra Vly Rd Pedes&Bridge Poj\CEQA\CEQAChkLstFinal.doc Page 11 of 17 Potentially Significant Potentially Unless Less than Significant Mitigation Significant Impact Incorporation Impact No Impact XII. POPULATION AND HOUSING. Would the project: a. Induce substantial population growth in an area, either directly(for example,by proposing new homes and businesses) or indirectly (for example, through extension of roads or other infrastructure)? ✓ b. Displace substantial numbers of existing housing, necessitating the construction of replacement housing elsewhere? ✓ c. Displace substantial numbers of people, necessitating the construction of replacement housing elsewhere? ✓ SUMMARY: No Impact. The goal of the project is to improve pedestrian access at this location. This goal will be achieved without creating additional infrastructure that could encourage population growth. The location where the project will be constructed is essentially built=out; therefore the project will not induce further population . growth. The project will not result in the displacement of any homes or residents, nor will it result in a change in the location, distribution, density or growth rate of human population in the area. The project will not affect existing housing, or create a demand for additional houses nor will it require the removal of any homes or the displacement of any people. XIII PUBLIC SERVICES a.. Would the project result in substantial adverse physical impacts associated with the provision of new or physically altered governmental facilities, need for new or physically altered governmental facilities,the construction of which could cause significant environmental impacts, in order to maintain acceptable service ratios,response times or other performance objectives for any of the public services ✓ 1. Fire Protection? ✓ 2. Police Protection? ✓ 3. Schools? ✓ 4. Parks? ✓ 5. Other Public facilities? ✓ SUMMARY: Less Than Significant Impact. During construction, residents and emergency service vehicles will be able to access the construction site and all adjacent neighborhoods at all times. Once constructed, the project will not increase the need for fire or police protection. The project will not increase the need for schools,parks or other public facilities. G:\EngSvc\ENVIRO\TransEng\Alahambra My Rd Pedes&Bridge Poj\CEQA\CEQAChkLstFinal.doc Page 13 of 17 SUMMARY: Less Than Significant Impact. The majority of the project will occur in the roadway.shoulder area and therefore traffic disruption for the majority of the construction period will be limited to only minor lane narrowing, with no road closures. However, for a brief period (a maximum of two days), road closure between Milthwait Drive and Wanda Way will be necessary in order to crane in the bridge. Road closure will only be allowed during working hours (7:00 am to 5:00 pm), and the roadway will be reopened after 5:00 pm to minimize traffic disruption in the surrounding neighborhoods. There are multiple routes of entry to the neighborhoods in the vicinity of the project. Given the short duration of the road closure and the ability to access surrounding neighborhoods from multiple locations, the two day road closure.is expected to be a less than significant impact. Road closure is expected to occur in the summer months when school is not in session; therefore impacts to school-aged children and their families are not expected. If bridge installation must occur when school is in session, contract specifications will require that bridge installation occur on a weekend to minimize disruption to school traffic. No interference with an emergency evacuation or response is expected to result from the project. Emergency access will be allowed through the project site at all times. Traffic control measures around the work area will minimize the potential for accidents and standard specifications for the project will require installation of sufficient warning signs regarding the construction and associated work hours. Potentially Significant Potentially Unless Less than Significant Mitigation Significant Impact Incorporation Impact No Impact XVI. UTILITIES AND SERVICE SYSTEMS. ✓ Would the project: a. Exceed wastewater treatment requirements of the applicable Regional Water Quality Control Board? ✓ b. Require or result in the construction of new water or wastewater treatment facilities or expansion of existing facilities, the construction or which could cause significant environmental effects? ✓ 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? ✓ d. Have sufficient water supplies available to serve the project from existing entitlement and resources, or are new or expanded entitlement needed? ✓ 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 provider's existing commitments? ✓ f. Be served by a landfill with sufficient permitted capacity to accommodatethe project's solid waste disposal needs? ✓ g. Comply with federal, state and local statutes and regulations related to solid waste? ✓ G:\EngSvc\ENVIRO\TransEng\Alahambra Vly Rd Pedes&Bridge Poj\CEQA\CEQAChkLstFinal.doc Page 15 of 17 active nests. If active nests are identified, work will be delayed until a qualified biologist has confirmed that the young have fledged. Although Arroyo del Hambre Creek has a fairly dense riparian canopy for much of its length,riparian vegetation in the immediate project area is relatively sparse and the majority of the vegetation consists of non-native trees including walnuts and ornamental shrubs. A total of two native, one non-native and one unidentifiable snag tree larger.than 4" dbh will be removed from the riparian zone as a result of the project. These riparian trees slated for removal that are larger than 4" dbh include a 4.5" dbh willow (native), a 5" dbh walnut (non-native), an 8" dbh California bay laurel, and a 10" dbh unidentifiable ivy-covered snag (likely dead based on the complete coverage by ivy). Mitigation for these trees will be accomplished through payment to a local land trust. The land trust will plant, maintain (for three years) and monitor (for five years) eight native riparian trees (3:1 ratio for the native willow and bay, and 1:1 ratio for the non-native walnut and unidentifiable snag). In addition, a clump of giant reed (Arundo donax), a highly invasive non-native pest plant,will be removed during project construction. The removal will occur by hand to ensure impacts to the creek are avoided. For a brief period (a maximum of two days), road closure between Milthwait Drive and Wanda Way will be necessary in order to crane in the bridge. Road closure will only be allowed during working hours (7:00 am to 5:00 pm), and the roadway will be reopened after 5:00 pm to minimize traffic disruption in the surrounding neighborhoods. There are multiple routes of entry to the neighborhoods in the vicinity of the project. Given the short duration of the road closure and the ability to access surrounding neighborhoods from multiple locations, the two day road closure is expected to be a less than significant impact. Road closure is expected to occur in the summer months when school is not in session; therefore, impacts to school age children and their.families are not expected. If bridge installation must occur when School is in session, contract specifications will require that bridge installation occur on a weekend to minimize disruption to school traffic. The power, telephone, and cable lines in the vicinity of the bridge will be temporarily removed to allow the use of the crane during the placement of the bridge. Although the disruption of electrical and phone service is temporary (a maximum of two days), it has the potential to be a significant impact to the approximately four homes that will be affected. To ensure that homeowners don't go without power during bridge installation, the construction contract will require installation of a generator at any home that will be without power as a result of the project. Homeowners who will have their phone service disrupted will also be offered temporary phone service. The project does not have the potential to cause cumulative or indirect impacts. G:\EngSvc\ENVIRO\TransEng\Alahambra My Rd Pedes&Bridge Poj\CEQA\CEQAChkLstFinal.doc Page 17 of 17 oP OF PLgNN/ ,� NC�o w e p STATE OF CALIFORNIA � GOVERNOR'S OFFICE of PLANNING AND RESEARCH CSI IPOPN� •�r4�OF CAL\F�Pa`'• STATE CLEARINGHOUSE AND PLANNING UNIT ARNOLD SCHWARZENEGGER CYNTHIA BRYANT GOVERNOR DiREc rOR March 14,2008 Leigh Chavez Contra Costa County Community Development 651 Pine Street , Martinez, CA 94553 Subject: Alhambra Valley Rd Pedestrian Bridge Project SCH#: 2008022057 Dear Leigh Chavez: The State Clearinghouse submitted the above named Negative Declaration to selected state agencies for review. The review period closed on March.13,2008,and no state agencies submitted continents by that date. This letter acknowledges that you have complied with the State Clearinghouse review requirements for draft environmental documents,pursuant to the California Environmental Quality Act. Please call the State Clearinghouse at(916)445-0613 if you have any questions regarding the environmental review process. If you have a question about the above-named project,please refer to the ten-digit State Clearinghouse number when contacting this office. Sincerely, 7ei Robe Director, State Clearinghouse MAR 10 2008 ENWR 3iaMENTA , 140010th Street P.O.Box 3044 Sacramento,California 95812-3044 (916)445-0613 FAX(916)323-3018 www.opr.ca.gov Document Details Report State Clearinghouse Data Base SCH# 2008022057 Project Title Alhambra Valley Rd Pedestrian Bridge Project Lead Agency Contra Costa County Community Development Type Neg Negative Declaration Description The proposed Alhambra Valley Road Pedestrian Bridge project consists of construction of a 5-foot wide asphalt concrete path separated from the road; installation of a 12"corrugated steel pipe culvert 24 feet in length for drainage purposes, reconnection of an existing High Density Polyethylene(HDP) Pipe and reestablishment of original grade over the pipe, and installation of a prefabricated freespan steel pedestrian bridge across Arroyo Del Hambre Creek. The project length is approximately 300 feet;80 feet of which is the prefabricated bridge. Lead Agency Contact Name Leigh Chavez Agency Contra Costa County Community Development Phone (925)313-2366 Fax email Address 651 Pine Street City Martinez State CA Zip 94553 Project Location County Contra Costa City Martinez Region Cross Streets Wanda Way and Millthwait Drive Parcel No. Township 2N Range 2W Section Base Proximity to: Highways 4 Airports Railways BNSF Waterways Arroyo Del Hambre Creek Schools John Swett Elementary Land Use Existing Arterial Road/Public-Semi Public Project Issues Drainage/Absorption; Flood Plain/Flooding; Noise; Public Services; Soil Erosion/Compaction/Grading; Traffic/Circulation;Vegetation;Water Quality;Wetland/Riparian;Wildlife F Reviewing Resources Agency; Regional Water Quality Control Board, Region 2; Department of Parks and Agencies Recreation; Native American Heritage Commission; Public Utilities Commission; Cal Fire; Department of Fish and Game, Region 3; Department of Water Resources; California Highway Patrol; Caltrans, District 4;Air Resources Board,Transportation Projects; Caltrans, Division of Transportation Planning Date Received 02/13/2008 Start of Review 02/13/2008 End of Review 03/13/2008 Note: Blanks in data fields result from insufficient information provided by lead agency.