Draft Environmental Impact Report - East Bay Municipal Utility District

Dingee Pressure Zone Improvement Project - Estates Reservoir Replacement ProjectWater Distribution Facilities - Initial Studyrelated emissions are included in the BAAQMD emission inventory (which, in part, forms the basis for the CleanAir and Ozone Attainment plans) and are not expected to prevent attainment or maintenance of the ozone,particulate matter, and carbon monoxide standards within the Bay Area..b) Potential criteria air pollutants that could be generated during construction include particulate (dust) related to,earth movement, demolition and debris, and to a lesser extent, carbon monoxide, hydrocarbons, nitrogen oxidesand sulfur dioxides associated with combustion emissions from construction equipment and trucks. Short-termconstruction related impacts will be mitigated with dust and emission control measures, including the partial listbelow. These mitigation measures will reduce potential impacts to a Less than Significant level. Detailedanalysis is presented in the Project Draft EIR. Mitigation measures which will be included in the constructionspecifications for the project, include: Sprinkling water or using crushed granite on exposed soil on the construction site to prevent airborne dustfrom leaving the site Covering or daily spraying of stockpile areas Dust producing material shall be covered while being hauled Washing the wheels of hauling trucks when exiting project sites (to prevent tracking excessive dirt onnearby roadways) Construction equipment shall not idle in place for more than one-half hourc) The Project could result in a net increase of any criteria pollutant for which the project region is non-attainmentunder an applicable federal or state ambient air quality standard (including releasing emissions which exceedquantitative thresholds for ozone precursors). Notwithstanding Project generated impacts, maximum backgroundlevels of particulate matter (PM10, PM2.5) already exceed state or federal standards as applicable in the Projectvicinity. Therefore, the Project would incrementally contribute to these existing exceedences. The BAAQMDhas developed emission control measures for construction emissions that, when implemented by EBMUD,reduce the impacts to less than significant. Detailed analysis and mitigation measures are included in the ProjectDraft EIR.d) See discussion for b) above.e) Demolition of construction debris on-site has the potential to generate minor odors. To minimize potential dieselodor impacts on nearby receptors (pursuant to BAAQMD Regulation 1, Rule 301, Nuisance), constructionequipment will be properly tuned, and this requirement will be included in the Draft EIR mitigation measures.Operation of the new tanks will not generate long-term objectionable odors.sb09_003.doc 12 12/10/08