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HomeMy WebLinkAboutMINUTES - 09232008 - C.14 J TO: BOARD OF SUPERVISORS Contra 0E' _an FROM: JULIA R. BUEREN, PUBLIC WORKS DIRECTOCosta •s DATE: September 23, 2008 rq_ .n "��Qo County SUBJECT: ADOPT the Big Oak Tree Park Negative Declaration in compliance with the California Environmental Quality Act,Clyde area. ((58%)Prop. 12 Grant,(33%)Local Funds and(9%)Clyde Improvement Club Funds) (District IV) [CDD-CP# 07-29] Project No.: 7488-6X5019 SPECIFIC REQUEST(S)OR RECOMMENDATION(S)&BACKGROUND AND JUSTIFICATION RECOMMENDED ACTION: FIND, on the basis of the initial study and all comments received, that there is no substantial evidence that the project will have a significant effect on the environment, and ADOPT the Negative Declaration in compliance with the California Environmental Quality Act (CEQA), (the custodian of which is the Public Works Director who is located at 255 Glacier Drive, Martinez), and APPROVE the Big Oak Tree Park Project, and AUTHORIZE the Public Works Director to advertise the project, and Continued on Attachment: ® SIGNATURE: RECOMMENDATION OF COUNTY ADMINISTRATOR ❑ COMMENDATION OF BOARD COMMITTEE APPROVE ❑ OTHER SIGNATURE(S): ACTION OF BOARD ONc /e��G� �� Q&fwk APPROVED AS RECOMME ED Ulo- OTHER ❑ VOX`FSUPERVISORS UNANIMOUS(ABSENT40*" 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. kb:ab G:\Grppata\EngSvc\ENVIRO\BO\Forms\CEQA\CEQA Neg.Dec.-FCWCD.doc ATTESTED: /�► �p� 7 �c'� �i�/� Orig.Div:Public Works Environmental Section) Contact: John Mercurio,,(313-2191) DAVID TWA,CLERK OF THE BOARD OF SUPERVISORS cc: Administrator—Attu.E.Kuevor AND COUNTY ADMINISTRATOR Auditor-Controller H.U,Conservation&Development Public Works: K.Emigh,Construction By Deputy K.Birden—Environmental 1.Mercurio—Special Districts f SUBJECT: ADOPT the Big Oak Tree Park Project in Compliance with California Environmental Quality Act, Clyde Area. ((58%) Prop. 12 Grant, (33%) Local Funds and (9%) Clyde Improvement Club Funds) (District IV) [CDD-CP#07-29] Project No.: 7488-6X5019 DATE: September 23, 2008 PAGE: 2 of 2 RECOMMENDED ACTION (con't): DIRECT the Director of Conservation &Development to file a Notice of Determination, and AUTHORIZE the Public Works Director to arrange for payment of a$25 fee to Conservation&Development for processing, a $50 fee to the County Clerk for filing the Notice of Determination, and a $1,876.75 for California Department of Fish and Game fees. FISCAL IMPACT: The estimated project cost is $175,000 funded by Prop. 12 Grant (58%), Local Funds (33%) and Clyde Improvement Club Funds (9%). REASONS FOR RECOMMENDATIONS AND BACKGROUND: The project is needed in order to provide the community of Clyde with an enhanced recreational facility. The current recreational facility is solely composed of an open grass lot. With minor additions like: landscaping, benches, lighting, and a play structure, the community recreational opportunities will be improved. Currently the site attracts illegal parking inside the park's boundaries.The illegal parking has damaged the natural grass covering of the park, causing bare soil to be exposed for more than half of the park's area,leading to erosion and associated drainage problems. The project consists of planting trees, shrubs and groundcover, construction of an irrigation system for landscaping, installation of lighting fixtures, and installation of picnic tables and barbeque pits. Minor alterations of the park's grading and drainage system (a concrete gutter) will be constructed to stop runoff flowing from the parcel's western slope. Grading will also be done to reduce the western slope of the parcel to further alleviate the runoff coming into the park. Following implementation of these improvements, construction of a play structure and additional landscaping will occur. In order to minimize damage to any nearby trees, any roots exposed during excavation will be cut cleanly and tree branches will be trimmed. No tree removal will be necessary. Real property transactions may be necessary in support of this project. At least one lane of Kilburn St. will be open at all times during construction activities. 0 The project has been determined to be in compliance with the County General Plan. ANegative Declaration of environmental significance pertaining to this project was published on June 25`h 2008. The Board has considered the 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 # 7489-5019 CP# 07-29 PROJECT NAME: Big Oak Tree Park Improvements Project PREPARED BY: Kimani Birden� DATE: May 13, 2008 APPROVED BY: oO____o f��,• t� DATE: RECOMMENDATIONS: ❑ Categorical Exemption ® Negative Declaration ❑ Environmental Impact Report Required ❑ Conditional 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 projector 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: Vine Hill Base Map Sheet #: E-15 Parcel #: 100-420-016 GENERAL CONSIDERATIONS: 1. Location: The project is in Central Contra Costa County; in the unincorporated community of Clyde (Figs. 1-4) 2. Project Description: The purpose of this project is to provide the community of Clyde with an enhanced recreational facility. The current recreational facility is solely composed of an open grass lot. With minor additions like: landscaping, benches, lighting, and a play structure, the community recreational opportunities will be improved. Currently the site attracts illegal parking inside the park's boundaries. The illegal parking has damaged the natural grass covering of the park, causing bare soil to be exposed for more than half of the park's area, leading to erosion and associated drainage problems. The project consists of planting trees (ten), shrubs and groundcover, construction of an irrigation system for landscaping, installation of a lighting fixture, and installation of three picnic tables and two barbeque pits. Minor, alterations of the park's grading and drainage system (a concrete gutter)will be constructed to stop runoff flowing from the parcel's western slope. Grading will also be done to reduce the western slope of the parcel to further alleviate the runoff coming into the park. Following implementation of these improvements, construction of a play structure and additional landscaping will occur. In order to minimize damage to any near by trees, any roots exposed during excavation will be cut cleanly and tree branches will be trimmed. No tree removal will be necessary. Real property transactions may be necessary in support of this project. At least one lane of Kilburn St. will be open at all times during construction activities. 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); 5. Is the project within the Sphere of Influence of any city? Yes, Concord G:\EngSvc\ENVIRO\Special Districts\Big Oak Tree Park Improvmenls\CMA\Initial Study-CalEx Big Oak Tree Park.doct CALIFORNIA ENVIRONMENTAL QUALITY ACT NOTICE OF.DETERMINATION CONTRA COSTA COUNTY DEPARTMENT OF CONSERVATION AND DEVELOPMENT COMMUNITY DEVELOPMENT DIVISION 651 PINE STREET 4TH FLOOR NORTH WING MARTINEZ, CALIFORNIA 94553-0095 Telephone: (925)313-2190 Contact Person: Kimani Birden, Planner I Project Title, Description, Common Name (if any) and Location: Big Oak Tree Park Project, Project No. 7489- 5019, CP# 07-29. Location: The project is in Central Contra Costa County; in the unincorporated community of Clyde The purpose of this project is to provide the community of Clyde with an enhanced recreational facility. The current recreational facility is solely composed of an open grass lot. With minor additions like: landscaping, benches, lighting, and a play structure, the community recreation aI opportunities will be improved. Currently the site attracts illegal parking inside the park's boundaries. The illegal parking has damaged the natural grass covering of the park, causing bare soil to be exposed for more than half of the park's area, leading to erosion and associated drainage problems. The project consists of planting trees (ten), shrubs and groundcover, construction of an irrigation system for landscaping, installation of a lighting fixture, and installation of three picnic tables and two barbeque pits. Minor alterations of the park's grading and drainage system (a concrete gutter)will be constructed to stop runoff flowing from,the parcel's western slope. Grading will also be done to reduce the western slope of the parcel to further alleviate the runoff coming into the park. Following implementation of these improvements, construction of a play structure and additional landscaping will occur. In order to minimize damage to any near by trees, any roots exposed during excavation will be cut cleanly and tree branches will be trimmed. No tree removal will be necessary. Real property transactions may be necessary in support of this project. At least one lane of Kilburn St. will be open at all times during construction activities. 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 Negative Declaration has been prepared. Copies of the record of project approval and the Negative Declaration or the final EIR may be examined at the office of the Contra Costa County Public Works Department. ® The Project will not have a significant environmental effect. ❑ 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. Date: By: Department of Conservation and Development 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-$2,606.75 Total Due: $ 255 Glacier Drive ® Neg. Dec.-$1,876.75 Total Paid $ Martinez, CA 94553 Attn: Kimani Birden ® County Clerk -$50 Receipt#: Environmental Section ® Community Development Dept. -$25 CALIFORNIA ENVIRONMENTAL QUALITY ACT NOTICE OF DETERMINATION CONTRA COSTA COUNTY DEPARTMENT OF CONSERVATION AND DEVELOPMENT COMMUNITY DEVELOPMENT DIVISION 651 PINE STREET 4TH FLOOR NORTH WING MARTINEZ, CALIFORNIA 94553-0095 Telephone: (925)313-2190 Contact Person: Kimani Birden, Planner t Project Title, Description, Common Name (if any) and Location: Big Oak Tree Park Project, Project No. 7489- 5019, CP# 07-29. Location: The project is in Central Contra Costa County; in the unincorporated community of Clyde The purpose of this project is to provide the community of Clyde with an enhanced recreational facility. The current recreational facility is solely composed of an open grass lot.With minor additions like: landscaping, benches,lighting, and a play structure, the community recreational opportunities will be improved. Currently the site attracts illegal parking inside the park's boundaries. The illegal parking has damaged the natural grass covering of the park, causing bare soil to be exposed for more than half of the park's area, leading to erosion and associated drainage problems. The project consists of planting trees (ten), shrubs and groundcover, construction of an irrigation system for landscaping, installation of a lighting fixture, and installation of three picnic tables and two barbeque pits. Minor alterations of the park's grading and drainage system (a concrete gutter)will be constructed to stop runoff flowing from the parcel's western slope. Grading will also be done to reduce the western slope of the parcel to further alleviate the runoff coming into the park. Following implementation of these improvements, construction of a play structure and additional landscaping will occur. In order to minimize damage to any near by trees, any roots exposed during excavation will be cut cleanly and tree branches will be trimmed. No tree removal will be necessary. Real property transactions may be necessary in support of this project.At least one lane of Kilburn St. will be open at all times during construction activities. 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 Negative Declaration has been prepared. Copies of the record of project approval and the Negative Declaration or the final EIR may be examined at the office of the Contra Costa County Public Works Department. ® The Project will not have a significant environmental effect. ❑ 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. Date: By: Department of Conservation and Development 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-$2,606.75 Total Due: $ 255 Glacier Drive ® Neg. Dec.-$1,876.75 Total Paid $ Martinez, CA 94553 Attn: Kimani Birden ® County Clerk-$50 Receipt M Environmental Section ® Community Development Dept. -$25 v � c co CD D r ' Vo Alt, Al Op r "{$ Xff 7>�'S a � y N 'w li yip •'� �r rra'"y `t.. t ,h.. '';ns ,a . o.,.. n a ev . , od O oI , A P 4 1 't'1 Uy 1 tD ..a SEE 552572 M4P T . - C _ MILITARY ------ OCEAN ____ I --OCEAN !' r = TERMINAL - - f - NCORO 94565 T r � � E CLYDE $oject I oca ion - -- •! i Z. _ �IkNCNO M7Nff TEL0/A9(0 n.rc \ ot°w• 4 � •T pp (HASLEY I __ CT_ MALLARD � Fx,k .��, � T�Y2.5 ''. �`. �i � ESERVOIR '- �! 13 I I �151 s F p40D r - o 3 rl, ,'CREE`I�-k'"s' ,:!.._.. 1-0`=1I� p: •r_A _ I I: •� P A `ra.'1�*T'is8 �p�R'rF w,•s _ `io gARr oe 't UNITED STATES - "S NAVAL WEAPONS STATION'CONCORD ;. tAl. 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Lead Agency Name and Address: Contra Costa County Community Development Department 651 Pine St., Martinez, CA 94553 3. Contact Person and Phone Number: Kimani Birden (925) 313-2190 4. Project Location: The project is located in central Contra Costa County near the unincorporated town of Clyde. 5. Project Sponsor's Name and Address: Contra Costa County Public Works Department 255 Glacier Dr., Martinez CA 94553 6. General Plan Designation: Residential 7. Zoning: Open Space 8. Description of Project: The purpose of this project is to provide the community of Clyde with a restored recreational facility. The existing facility's ability to sustain community usage as park land has deteriorated due to illegal parking on the field and flooding from seasonal rain. The project consists of planting trees, shrubs and groundcover, construction of an irrigation system for the landscaping, and installation of picnic tables and barbeque pits. Minor improvements to the park's drainage system including constructing a concrete gutter to capture runoff flowing from the parcel's western slope and discharge it to the street is included in the project. Grading will also be done to reduce the western slope of the parcel to further alleviate the runoff coming into the park. Lighting will be placed along the walk in front of the park. Following implementation of these improvements, a play structure and additional landscaping will be constructed. In order to minimize damage to any near by trees, any roots exposed during excavation will be cut cleanly and tree branches will be trimmed. No tree removal will be necessary. Real property transactions may be necessary in support of this project. At least one lane of Kilburn St. will be open at all times during construction activities. 9. Surrounding Land Uses and Setting: To the south, east and the west is residential development. To the North is the Concord Naval Weapons Station. 1o. Other public agencies whose approval CCWD (e.g., permits, financing approval, or participation agreement). G:\EngSvc\ENVIRO\Special Districts\Big Oak Tree Park Improvments\MitNegDec(05-8-07)Big oak Tree Parkab-final draft 04-21-08.doc Page of 15 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. Land Use& Planning Transportation/Circulation Public Services Population & Housing Utilities & Service Biological Resources Systems Geological Problems Energy & Mineral Resources Aesthetics Water Hazards Cultural Resources Air Quality Noise Recreation Mandatory Findings of X No Significant Impacts Significance Identified DETERMINATION On the basis of this initial evaluation: X 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 Development Department Print Name GAEngSvc\ENVIRO\Special Districts\Big Oak Tree Park Improvments\MitNegDec(05-8-07)Big oak Tree Parkab-final draft 04-21-08.doc Page of 2 15 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 County General Plan (July 2005) and EIR on the General Plan (2005-2020) 2. Soil Survey of Contra Costa County, Soil conservation Service, 9/77 3. FEMA 100-Year Floodplain Map 4. California Natural Diversity Data Base, California Department of Fish and Game, September 2005 5. Field Reviews and Project Description 6. Contra Costa County Public Works GIS, July 2004 7. Association of Bay Area governments Earthquake Maps and Information. UPDATED May 05,2006 8. Contra Costa County Orthophoto and GIS Data Map 9. Contra Costa County Important Farmland Map 2004, California Department of Conservation Division of Land Resources Protection, 2004 10. Contra Costa Resource Mapping System — Quad Sheet Panels for Vine Hill Quadrangle, California GAEngSvc\ENVIRO\Special Districts\Big Oak Tree Park Improvments\MitNegDec(05-8-07)Big oak Tree Parkab-final draft 04-21-08.doc Page of 3 15 EVALUATION OF ENVIRONMENTAL IMPACTS: Potentially Significant Potentially Unless Less than Significant Mitigation Significant Impact Incorporation Impact No Impact L AESTHETICS. Would the proposal: a. Have a substantial adverse effect on a scenic vista? X b. Substantially damage scenic resources, including, but not limited to, trees, rock, X outcroppings, and historic buildings within a state scenic highway? c. Substantially degrade the existing visual character or quality of the site and its X surroundings: d. Create a new source of substantial light or glare, which would adversely affect day or nighttime views in the area? X SUMMARY: Less than significant impact. The completion of the project will enhance the local community's aesthetics with improved landscaping and recreation facilities. The creation of a new source of light or glare, which could affect nighttime views, will be reduced by installing timers to limit the number of hours the lights are on during the night, as well as hoods to direct light sources away from windows, and use of low light emission bulbs in the light fixtures. Potentially Significant Potentially Unless Less than Significant Mitigation Significant Impact Incorporation Impact No Impact II. AGRICULTURAL RESOURCES. In determining whether impacts to agricultural resources are significant environmental effects, lead agencies may refer to the California Agricultural Land Evaluation and Site Assessment Model (1997) prepared by the California Dept. of Conservation as an optional model to use in assessing impacts on agricultural and farmland. Would the project: a. Convert Prime Farmland, Unique Farmland, or Farmland of Statewide, Importance (Farmland), as shown on the maps prepared pursuant to the Farmland Mapping and Monitoring Program of the California Resources Agency, to non-agricultural use? X b. Conflict with existing zoning for agricultural use, or a Williamson Act contract? X c. Involve other changes in the existing environment, which, due to their location or nature, could result in conversion of Farmland, to non-agricultural use? X SUMMARY: No Impact. The project is not within or close to any designated agriculturally zoned areas. G:\EngSvc\ENVIRO\Special Districts\Big Oak Tree Park Improvments\MitNegDec(05-8.07)Big oak Tree Parkab-final draft 04-21-08.doc Page of 4 15 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? X b. Violate any air quality standard or contribute to an existing or projected air quality violation? X 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)? X d. Expose sensitive receptors to substantial pollutant concentrations? X e. Create objectionable odors affecting a substantial number of people? X SUMMARY Less than significant. Short-term emissions may be generated during construction; however, they will be minor and temporary. In order to minimize impacts due to construction activities, contract specifications will stipulate the use of properly tuned and muffled equipment and the elimination of unnecessary idling of equipment when not in use. Implementation of dust control practices including general watering of exposed areas and/or use of chemical stabilizers will also minimize air quality impacts. The minor temporary deterioration of ambient air quality at the construction site will have no potentially adverse long-term impacts to air quality. Potentially Significant Potentially Unless Less than Significant Mitigation Significant Impact Incorporation Impact No Impact IV. BIOLOGICAL RESOURCES. Would the project: a. Have a substantial adverse effect, either directly or through habitat modifications, on any species identified as a candidate, sensitive, or special status species in local or regional plans, polices, or regulations, or by the California Department of Fish and Game or U.S. Fish and Wildlife Service? X b. Have a substantial adverse effect on any riparian habitat or other sensitive natural community identified in local or regional plans, policies, regulations or by the California Department of Fish and Game or US Fish and Wildlife Service? X c. Have a substantial adverse effect on federally protected wetlands as defined by Section 404 of the Clean Water Act (including, but not limited to, marsh, vernal pool, coastal, etc.) through direct removal, filling, hydrological interruption, or other means? X G:\EngSvc\ENVIRO\Special Districts\Big Oak Tree Park Improvmenls\MitNegDec(05-8-07)Big oak Tree Parkab-final draft 04.21-08.doc Page of 5 15 Potentially Significant Potentially Unless Less than Significant Mitigation Significant Impact Incorporation Impact No Impact c. Have a substantial adverse effect on federally protected wetlands as defined by Section 404 of the Clean Water Act (including, but not limited to, marsh, vernal pool, coastal, etc.) through direct removal, filling, hydrological interruption, or other means? X d. Interfere substantially with the movement of any native resident or migratory fish or wildlife species or with established native resident or migratory wildlife corridors, or impede the use of native wildlife nursery sites? X e. Conflict with any local policies or ordinances protecting biological resources, such as tree preservation policy or ordinance? X f, Conflict with the provisions of an adopted Habitat Conservation Plan, Natural Community Conservation Plan, or other approved local, regional, or state habitat conservation plan? X SUMMARY: No Impact. The project site is located in a mixed residential area and is completely surrounded by structures. Based on review of the Department of Fish and Game's California Natural Diversity Database (CNDDB), a site visit, and consulting other natural resource maps, no wildlife habitat, and no listed species are expected to occur within the project area. The project includes a drainage ditch, but it will only collect overland flow and does not qualify as waters of the US or State of California. 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? X b. Cause a substantial adverse change in the significance of an archaeological resource pursuant to §15064.5? X c. Directly or indirectly destroy a unique paleontological resource or site or unique geologic feature? X d. Disturb any human remains, including those interred outside of formal cemeteries? X SUMMARY: Less Than Significant Impact. A records search conducted by the Northwest Information Center (NWIC) at Sonoma State University indicated a moderate likelihood that unrecorded Native American cultural resources could exist in the project area. Based on the results of their research, NWIC recommended further archival and field study by a qualified archaeologist. As a result of the NWIC recommendation, the County hired an archaeological consultant to conduct a more detailed review of the area. The consultant researched a number of sources including the National Register of Historic Places (NHRP), the California Register of Historic Resources, the California Inventory of Historic Resources and the Native American Heritage Commission. In addition to the in-depth records search, the consultant also visually inspected the project site along east/west trending transects of 5-foot intervals while making periodic surface scrapings by trowel to expose below surface soils. Based on the records search and field review, archaeological resources are not expected to be encountered during construction. Nevertheless, because archaeological resources could be G:\EngSvc\ENVIRO\Special Districts\Big Oak Tree Park Improvments\MitNegDec(05-8-07)Big oak Tree Parkab-final draft 04-21-08.doc Page of 6 15 unearthed during construction activities, contract specifications will include contingency plans to address any unearthed cultural resources. This will include the stoppage of work in the immediate area of any discovery, and in the case of human remains immediately contacting the county coroner, Native American Heritage Commission, and a qualified archeologist to determine how to appropriately deal with the resource. Potentially Significant Potentially Unless Less than Significant Mitigation Significant Impact Incorporation Impact No.impact VI. 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: X 1. Rupture of a known earthquake fault, as delineated on the most recent Alquist-Priolo Earthquake Fault Zoning Map issued by the State Geologist for the area or based on other substantial evidence of a known fault? Refer to Division of Mines and Geology Special Publication 42. X 2. Strong seismic ground shaking? X 3. Seismic-related ground failure, including liquefaction? X 4. Landslides? X b. Result in substantial soil erosion or the loss of topsoil? X c. Be located on a geologic unit or soil that is unstable, or that would become unstable as a result of the project, and potentially result in on- or off-site landslide, lateral spreading, subsidence, liquefaction or collapse? X d. Be located on expansive soil, as defined in Table 18-1-B of the Uniform Building Code (1994), creating substantial risks to life or property? X e. Have soils incapable of adequately supporting the use of septic tanks or alternative waste disposal systems where sewers are not available for the disposal of wastewater? jC SUMMARY Less than significant impact. According to the Contra Costa County Soil Survey maps, soils of the site consist of Loam, Silty Clay, and Clay soil. All areas left exposed due to the project will be seeded with ornamental grass turf consistent with a neighborhood park setting. To .control erosion during and after project implementation, best management practices will be implemented, this will include construction during dry season, dust control measures (watering), street sweeping, and installation of a stabilized construction entrance. 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? X GAEngSvc\ENVIRO\Special Districts\Big Oak Tree Park Improvments\MitNegDec(05-8-07)Big oak Tree Parkab-final draft 04-21-08.doc Page of 15 Potentially Significant Potentially Unless Less than Significant Mitigation Significant Impact Incorporation Impact No Impact c. Emit hazardous emissions or handle hazardous or acutely hazardous materials, substances, or waste within one-quarter mile of an existing or proposed school? X d. Be located on a site which is included on a list of hazardous materials sites compiled pursuant to Government Code Section 65862.5 and, as a result, would it create a significant hazard to the public or the environment? X e. For a project located within an airport land use plan or, where such a plan has not been adopted, within two miles of a public airport or public use airport, would the project result in a safety hazard for people residing or working in the project area. X 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? X g. Impair implementation of or physically interferes with an adopted emergency response plan or emergency evacuation plan? X 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? X SUMMARY Less than significant impact. The proposed park will be located in a residential neighborhood. A review of the Hazardous Materials maps from Environmental Protection Agency (EPA) website confirms that there are no known hazardous materials within the project area. All fueling and maintenance of vehicles and other equipment and staging areas will occur at least 10 meters from any storm drain inlet. In addition, all storm drain inlets will be protected to ensure no deleterious materials are allowed to enter the storm drain system. G:\EngSvc\ENVIRO\Special Districts\Big Oak Tree Park Improvments\MitNegDec(05-8-07)Big oak Tree Parkab-final draft 04-21-08.doc Page of 8 15 Potentially Significant Potentially Unless Less than Significant Mitigation Significant Impact Incorporation Impact No Impact VIII. HYDROLOGY AND WATER QUALITY. Would the project: a_. Violate any water quality standards or waste discharge requirements? 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 local groundwater table level (e.g., the production rate of pre-existing nearby wells would drop to a level which would not support existing land uses or planned uses for which permits have been granted)? X c. Substantially alter the existing drainage pattern of the site or area, including through the alteration of the course of a stream or river, in a manner, which would result in substantial erosion or siltation on or off-site? X d. Substantially alter the existing drainage pattern of the site or area, including through the alteration of the course of a stream or river, or substantially increase the rate or amount of surface runoff in a manner, which would result in flooding on- or off-site? X e. Create or contribute runoff water which would exceed the capacity of existing or planned storm water drainage systems or provide substantial additional sources of polluted runoff? X f. Otherwise substantially degrade water quality? X g. Place housing within a 100-year flood hazard area as mapped on a federal Flood Hazard Boundary or Flood Insurance Rate Map or other flood hazard delineation map? X h. Place within a 100-year flood hazard area structures, which would impede or redirect flood flows? X i. Expose people or structures to a significant risk of loss, injury or death involving flooding, including flooding as a result of the failure of a levee or dam? X j. Inundation by seiche, tsunami, or mudflow? X SUMMARY Less than significant Impact. The construction of the park will not increase exposure of people or property to flooding. In order to ensure that impacts to water quality remain less than significant, Best Management Practices (BMPs) will be incorporated into the project, such as: storage, fueling and servicing construction equipment in safe locations. 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 site. At the completion of the project, all disturbed areas will be stabilized through the use of "NoMow" grass (species of grass which grows to a height of only 6 inches) and mulch. GAEngSvc\ENVIRO\Special Districts\Big Oak Tree Park Improvments\MilNegDec(05-8-07)Big oak Tree Parkab-final draft 04-21.08.doc Page of g 15 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? X 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? X c. Conflict with any applicable habitat conservation plan or natural community conservation plan? X SUMMARY The project will have no impact on land use and planning. Potentially Significant Potentially Unless Less than Significant Mitigation Significant Impact Incorporation Impact No Impact 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? X b. Result in the loss of availability of a locally important mineral resource recovery site delineated on a local general plan, specific plan or other land use plan? X SUMMARY The project will have no impact on mineral resources. Potentially Significant Potentially Unless Less than Significant Mitigation Significant Impact Incorporation Impact No Impact XI. NOISE. Would the project result in: a. Exposure of persons to or generation of noise levels in excess of standards established in the local general plan or noise ordinance, or applicable standards of other agencies? X b. Exposure of persons to or generation of excessive ground borne vibration or ground borne noise levels? X c. A substantial permanent increase in ambient noise levels in the project vicinity above levels existing without the project? X d. A substantial temporary or periodic increase in ambient noise levels in the project vicinity above levels existing without the project? X G:1EngSvc\ENVIRO\Special Districts\Big Oak Tree Park Improvments\MitNegDec(05-8-07)Big oak Tree Parkab-final draft 04-21-08.doc Page of 10 15 Potentially Significant Potentially Unless Less than Significant Mitigation Significant - Impact Incorporation Impact No Impact 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 in the project area to excessive noise levels? X 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? X SUMMARY Less than significant Impact. Temporary minor increases in noise level may occur during the project due to operation of construction equipment. Construction of the project will increase the ambient noise level near the.project site temporarily. Typically, construction activities produce average noise levels of about 86 DBA at 50 feet from any given construction site. This construction project is expected to be consistent with this generalized average due to the standard construction activities that will occur. Increased noise as a result of construction activities will be temporary and will; therefore, remain at a level that is less than significant. Based on the proximity of the nearby residences, no nighttime work will be conducted and working hours will be limited to 8 am to 5 pm on weekdays and 9 am to 5 pm on weekends and holidays. Any modification to these working hours must be approved by the Resident Engineer and surrounding neighbors will be notified in advance of any changes. These working hours will be incorporated as part of the construction contract. Contract specifications will also require the use of properly tuned and muffled equipment to minimize noise due to construction activities. There will be a limited number of additional vehicle trips during construction resulting from worker vehicles accessing the site; however, this will be a minor and temporary impact that would not significantly increase the ambient noise level at the project site and is, therefore, deemed less than significant. 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)? X b. Displace substantial numbers of existing housing, necessitating the construction of replacement housing elsewhere? X c. Displace substantial numbers of people, necessitating the construction of replacement housing elsewhere? X SUMMARY No Impact. The project will not have any impact on the population or housing of the region. G:\EngSvc\ENVIRO\Special Districts\Big Oak Tree Park Improvments\MitNegDec(05-8-07)Big oak'free Parkab-final draft 04-21-08.doc Page of 11 15 Potentially Significant Potentially Unless . Less than Significant Mitigation Significant Impact Incorporation Impact No Impact XIII. PUBLIC SERVICES Would the project: 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? X 2. Police Protection? X 3. Schools? X 4. Parks? X 5. Other Public facilities? X SUMMARY No Impact. The project will not impact any public services. The County Resource Mapping System and the field reviews did not identify-any recreational opportunities in the immediate project area. Emergency services vehicles will have access to residences within the affected project area at all times. Potentially Significant Potentially Unless Less than Significant Mitigation Significant Impact Incorporation Impact No Impact XIIII. RECREATION a. Would the project increase the use of existing neighborhood and regional parks or other recreational facilities such that substantial physical deterioration of the facility would occur or be accelerated? X b. 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? X SUMMARY The project will not impact any recreation resource. The project will actually improve the recreation facilities available to the neighborhood. The park improvements are expected to add to the existing neighborhood parks and other recreational facilities in the area. G:\EngSvc\ENVIRO\Special Districts\Big Oak Tree Park Improvments\MitNegDec(05-8-07)Big oak Tree Parkab-final draft 04-21-08.doc Page of 12 15 Potentially Significant Potentially Unless Less than Significant Mitigation Significant Impact Incorporation Impact No Impact XV. TRANSPORTATION/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)? X b. Exceed, either individually or cumulatively, a level of service standard established by the county congestion management agency for designated roads or highways? X 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? X d. Substantially increase hazards due to a design feature (e.g., sharp curves or dangerous inter- sections) or incompatible uses (e.g., farm equipment)? X e. Result in inadequate emergency access? X f. Result in inadequate parking capacity? X g. Conflict with adopted policies, plans, or programs supporting alternative transportation (e.g., bus turnouts, bicycle racks)? X SUMMARY Less than significant Impact. Truck trips will be limited to the hours 8am to 5pm. At least one lane of Kilburn Street will remain open at all times. G:\EngSvc\ENVIRO\Special Districts\Big Oak Tree Park Improvments\MitNegDec(05-8-07)Big oak Tree Parkab-final draft 04-21.08.doc Page of 13 15 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? X 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? X 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? X d. Have sufficient water supplies available to serve the project from existing entitlement and resources, or are new or expanded entitlement needed? X 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? X f. Be served by a landfill with sufficient permitted capacity to accommodate the project's solid waste disposal needs? X g. Comply with federal, state and local statutes and regulations related to solid waste? x SUMMARY The project will not impact any utilities and service systems. Potentially Significant Potentially Unless Less than Significant Mitigation Significant Impact Incorporation Impact No Impact XVII. 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 and wildlife species, cause a fish or wildlife population to drop below self-sustaining levels, threaten to eliminate a plant or animal community, reduce the number or restrict the range of a rare or endangered plant or animal or eliminate important examples of the major periods of California history or prehistory? X GAEngSvc\ENVIRO\Special Districts\Big Oak Tree Park Improvments\MitNegDec(05-8-07)Big oak Tree Parkab-final draft 04-21-08.doc Page of 14 15 Potentially Significant Potentially Unless Less than Significant Mitigation Significant Impact Incorporation 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 SUMMARY: The project will have no significant impacts. \EngSvc\ENVIRO\Special Districts\Big Oak Tree Park Improvments\CEQA\MilNegDec(05-8-07)Big oak Tree Parkab-final draft 04-21-08.doc 15 le of 15 AUG-20-2008 13:01 STATE CLEARINGHOUSE P.001 _ 6 PIAry,�y41bt STATE OF CALIFORNIA GOVERNOR'S OFFICE of PLANNING AND RESEARCH ` STATE CLEARINGHOUSE AND PLANNING UNDP ARN=SCHWARZEN=ER CYNTHIA BRYANr GOVERNOR DIRECTOR August 13,2008 Kimani Birden Contra Costa County Department of Conservation and Development 651 Pine Street Martinez,CA 94553 Subject: Big Oak Tree Park SCH#: 2008062083 Dear Kimani Bilden: The State Clearinghouse submitted the above named Negative Declaration to selected state agencies for review. The review period closed on August 12,2008,and no state agencies submitted comments;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, . y' Terry Ro ens/��w" Director, State Clearinghouse Post•ite Fax Note 7671 Dere$_ # To �� Pe9 3 i from �( fe COJDepc// 1. (COS Co. �lOw ,c•!J Phone# • Far# R . '7(,,30 Phan°#C]r f/hY'J` �Vr'3 G12S i -23 tJ Fax# W 140010th Street P.O.Box 3044 Sacramento,California 95812.3044 (916)445-0613 FAX(916)323.3018 www.opr.ca gov