Draft Environmental Impact Report - East Bay Municipal Utility District

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Estates Reservoir Replacement Draft Environmental Impact ReportSummaryENVIRONMENTALIMPACT MITIGATION MEASURESImpact 3.4-2: Disturbances tonesting raptors or special statusnesting birds.Measure 3.4-2: EBMUD will avoid disturbing active nests of special-status nesting birds byperforming preconstruction surveys and creating no-disturbance buffers. If construction activities(i.e., ground clearing and grading, including removal of trees or shrubs) are scheduled to occurduring the non-breeding season (September 1 through January 31), no mitigation is required.SIGNIFICANCEAFTERMITIGATIONLess than Significant.If construction activities are scheduled to occur during the breeding season (February 1 throughAugust 31), EBMUD will implement the following measures to avoid potential adverse effects onnesting raptors and other special-status birds:EBMUD will retain a qualified wildlife biologist to conduct preconstruction surveys of all potentialnesting habitat within 500 feet of construction activities where access is available.If active nests are found during preconstruction surveys, EBMUD will create a no-disturbancebuffer (acceptable in size to the California Department of Fish and Game, CDFG) around activeraptor nests and nests of other special-status birds during the breeding season, or until it isdetermined that all young have fledged. The size of these buffer zones and types of constructionactivities restricted in these areas will be based on existing noise and human disturbance levels atthe Estates Reservoir Project site. Nests initiated during construction are presumed to be unaffectedby the activities occurring, and no buffer would be necessary.Impact 3.4-3: Loss or damageto special – status plants andsensitive natural communities.If preconstruction surveys indicate that nests are inactive or potential habitat is unoccupied duringthe construction period, no further mitigation is required. Trees and shrubs within the constructionfootprint that have been determined to be unoccupied by special-status birds or that are locatedoutside the no-disturbance buffer for active nests may be removed.Mitigation Measure: None Required: The Estates Reservoir site is within a large-scale, wellestablished residential neighborhood and has been maintained as a manicured landscape for severaldecades. Ornamental vegetation on the site and in the surrounding neighborhood has decreased (ifnot eliminated) the value of on-site vegetation for native wildlife habitat. The Estates ReservoirProject will therefore not have a significant adverse impact on biological resources, or to specialstatus/sensitive plants and communities. Because of the extensive grass, shrub and tree plantingproposed as part of the Project, the Project will, in fact, increase the potential for habitat for nativespecies with the planting of native coast live oak, California Sycamore and California buckeye.This impact is considered beneficial and no further discussion is offered nor are mitigation measuresrequired.sb09_001.doc S-9 7/22/2009
Estates Reservoir Replacement Draft Environmental Impact ReportSummaryENVIRONMENTALIMPACT MITIGATION MEASURESImpact 3.4-4: Loss of orimpact to wetlands.Mitigation Measure: None Required: The Estates Reservoir site has no jurisdictional wetlands asdefined by Section 401 and 404 of the Clean Water Act and Sections 1600-1606 of the CaliforniaFish and Game Code. No construction activities for the Estates Reservoir Replacement Projectwould occur at or near (within 100 feet) of streams, wetlands or riparian habitat. Therefore therewill be no impacts from Project construction on features potentially subject to Section 401 and 404of the Clean Water Act, and Sections 1600-1616 of the California Fish and Game Code.SIGNIFICANCEAFTERMITIGATIONCULTURAL RESOURCESImpact 3.5-1: Substantialadverse change to the historicsignificance of the EstatesReservoir roof. Demolition ofthe Estates Reservoir roofwould permanently eliminate ahistoric resource recommendedas eligible for listing on theCalifornia Register of HistoricResources.Measure 3.5-1: EBMUD will prepare a Historic American Building Survey/Historic AmericanEngineering Record style documentation of the Estates Reservoir roof designed by Robert Royston.The level of documentation will be similar to that described in Historic American Building Surveydocumentation level II, which includes at a minimum, measured drawings such as as-builts ororiginal design plans, historic photographs, if available, current large-format photographs ofsignificant architectural design features, and a written history and description. The documentationwill be submitted to the Oakland Heritage Alliance, the Oakland Historical Archives and the UCBerkeley Historical Archives. The intent is to reduce the adverse effect associated with a loss ofhistorical information; it will not prevent the physical loss of the resource, and a significant andunavoidable residual impact will remain.Significant andUnavoidable (AfterMitigation)Impact 3.5-2: Substantialadverse changes to thesignificance of currentlyunknown historical orprehistoric resources, includingunique archeological resources.Measure 3.5-2: If deposits of prehistoric or historic archeological materials are encountered duringProject activities, all work within 25 feet of the discovery will be stopped and a qualifiedarcheologist meeting federal criteria under 36 CFR 61 will be contacted to assess the deposit(s) andmake recommendations.Deposits of prehistoric or historic archeological materials should be avoided by Project activities. Ifthe deposits cannot be avoided, they will be evaluated for their potential historic significance. If thedeposits are recommended to be non-significant, avoidance is not necessary. If the deposits aredetermined to be potentially significant, they will be avoided. If avoidance is not feasible, Projectimpacts will be mitigated in accordance with the recommendations of the evaluating archaeologistand CEQA Guidelines §15126.4 (b)(3)(C), which require development and implementation of a datarecovery plan that would include recommendations for the treatment of the discoveredarchaeological materials. The data recovery plan will be submitted to EBMUD for review andapproval. Upon approval and completion of the data recovery program, Project construction activitywithin the area of the find may resume, and the archaeologist will prepare a report documenting theLess than Significantsb09_001.doc S-10 7/22/2009
Page 1: Estates Reservoir ReplacementDraft
Page 4 and 5: TABLE OF CONTENTSEstates Reservoir
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Page 8 and 9: ACRONYMS AND ABBREVIATIONSABABAGAPC
Page 12 and 13: SUMMARYS.1 IntroductionThis Draft E
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Page 42 and 43: Chapter 2Project Description2.1 Ove
Page 58 and 59: Chapter 3Environmental Setting, Imp
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Estates Reservoir Replacement Draft
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3.5 Cultural Resources3.5.1 Approac
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CHAPTER 5Cumulative Impacts, Growth
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CHAPTER 6Report Preparers6.1 Lead A
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APPENDIX APublic InvolvementPublic
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APPENDIX BNotice of PreparationAUGU
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Dingee Pressure Zone Improvement Pr
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FIGURESDingee Pressure Zone Improve
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Draft Environmental Impact Report - East Bay Municipal Utility District

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