Draft Environmental Impact Report - East Bay Municipal Utility District

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Estates Reservoir Replacement Draft Environmental Impact ReportAir QualityImpact 3.7-3: The proposed Project would result in an incremental contributionto a cumulative effect for several criteria pollutants for which the San FranciscoBay region is in nonattainment under an applicable federal or state ambient airquality standard.As detailed in this discussion for Impact 3.7-1, the San Francisco Bay Area Air Basinis in nonattainment of state and federal ozone, PM 10 , and PM 2.5 standards for severaldifferent averaging times. As detailed in this discussion for Impact 3.7-2, the on-siteoperation of heavy equipment during demolition and construction would generatecombustion emissions and fugitive dust emissions, resulting in a short-termincremental impact. Off-site vehicle emissions (trucks and worker vehicles) wouldalso contribute to a short-term incremental impact in the San Francisco Bay Area AirBasin.These incremental impacts were determined to be less than significant becauseEBMUD shall implement the applicable fugitive dust and particulate matter emissionscontrol measures contained in the BAAQMD CEQA Guidelines (BAAQMD 1999)and listed under Impact 3.7-2. The use of newer, less polluting Tier 1, 2, and 3engines in the majority of construction equipment used on-site is a measure forreducing combustion emissions of NOX, ROC, CO, PM 10 , and PM 2.5 . Although not amitigation measure per se, California ultra-low sulfur diesel fuel with a maximumsulfur content of 15 ppm by weight will be used in all diesel-powered equipmentwhich minimizes sulfur dioxide and particulate emissions. The results of the screeninganalysis for criteria pollutants presented previously show that no exceedence ofambient air quality standards in the Project vicinity would result solely from Projectactivities.These small incremental impacts are not cumulatively considerable because EBMUDwould comply with specific requirements in the BAAQMD’s approved air qualityplans for attainment of ozone and particulate matter. In short, these regional plansaddress the existing and cumulative impact problems.Significance after Mitigation: Less than Significant.Impact 3.7-4: The proposed Project would not expose sensitive receptors tosubstantial pollutant concentrations.The Project site is located in a hillside residential area. Residential uses surrounding theProject site consist of single-family dwellings on Estates Drive, Bullard Drive, WoodDrive, Wood Court, McAndrew Drive, Moyer Place, LaSalle Avenue, Bruns Court,Harbord Drive, Johnston Drive, and other streets in the neighborhood. It is not knownwhether some residences in the immediate vicinity (i.e., 1,000 feet or 305 meters) of theProject site might house potentially sensitive persons, but it is probable based on thedemographics of persons commenting at public meetings held on Project alternatives.sb09_001.doc 3-7.18 7/22/2009
Estates Reservoir Replacement Draft Environmental Impact ReportAir QualityThere would be no emissions from long-term storage tank operations to affectsensitive receptors, and minimal emissions from landscape and facilities maintenance.However, as discussed under Impact 3.7-2, demolition and construction activitieswould cause short-term emissions of NOX, ROC, CO, SO 2 , PM 10 , and PM 2.5 fromdiesel-powered equipment and earthmoving (ground disturbance). The results of thescreening analysis contained in the analysis for criteria pollutants show that noexceedence of ambient air quality standards in the Project vicinity would result solelyfrom Project activities. Notwithstanding Project-generated impacts, maximumbackground levels of particulate matter (PM 10 , PM 2.5 ) already exceed state or federalstandards as applicable in the Project vicinity.Diesel particulate matter (DPM) contain substances that are suspected carcinogens,along with pulmonary irritants and hazardous compounds which may affect sensitivereceptors such as young children, senior citizens, or those susceptible to respiratorydisease. Where construction activity occurs in proximity to long-term sensitivereceptors, there could be a potential for unhealthful exposure of those receptors todiesel exhaust, including residential receptors. The results of the screening riskassessment contained in Impact 3.7-2, analyses show that the probability ofcontracting cancer from diesel particulate matter, for the Maximally ExposedIndividual during the construction phase is about 1.2 x 10 -6 , which is less than the 10in one million (1 x 10 -5 ) BAAQMD CEQA threshold and thus not significant.Construction emissions are transient and temporary in nature, and BAAQMD controlmeasures would be implemented as described previously. Impacts on sensitive receptorsare anticipated to be less than significant, and no further mitigation would be required.Significance after Mitigation: Less than Significant.Impact 3.7-5: The proposed Project would not create objectionable odorsaffecting a substantial number of people.California ultra-low sulfur diesel fuel with a maximum sulfur content of 15 ppm byweight will be used in all diesel-powered equipment which minimizes emissions ofsulfurous gases (sulfur dioxide, hydrogen sulfide, carbon disulfide, and carbonylsulfide). Therefore, no objectionable odors are anticipated from demolition orconstruction activities or normal operation of the Project. The proposed Project wouldhave no significant impact, and no mitigation would be required.Mitigation Measure: None Required.sb09_001.doc 3-7.19 7/22/2009
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Estates Reservoir ReplacementDraft
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TABLE OF CONTENTSEstates Reservoir
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Estates Reservoir Replacement Draft
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ACRONYMS AND ABBREVIATIONSABABAGAPC
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SUMMARYS.1 IntroductionThis Draft E
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Estates Reservoir Improvements Draf
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Chapter 2Project Description2.1 Ove
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Chapter 3Environmental Setting, Imp
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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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