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<br />78 <br />ATTACHMENT 4 Page 34 <br /> <br />Potential Impact 3-b: The proposed project would contribute to regional <br />air pollutant emissions during construction (short-term) and project occupancy <br />(long-term). During project construction, air pollutant emissions would be <br />generated by a variety of sources. Emissions sources would include the <br />construction equipment (engine exhaust) and fugitive dust generated by winds <br />and the operation of construction equipment. Regional air pollutant emissions <br />associated with project operations would be generated by the consumption of <br />electricity and natural gas and by the operation of on-road vehicles. Regional <br />emissions resulting from the proposed project would not exceed regional Bay <br />Area Air Quality Management District (tlBAAQMD") thresholds for Nox, PM1O, or <br />ROG. (IS/MND Impact 3-b, pp. 3-20, 3-21). <br /> <br />Mitigation Measure AQ-1: Implement the following BAAQMD measures <br />for construction emissions of particulate matter over 10 microns in size (PM10). <br /> <br />. Water all active construction areas at least twice daily. <br /> <br />. Cover all trucks hauling soil, sand, and other loose materials, or require all <br />trucks to maintain at least 2 feet of freeboard. <br /> <br />. Pave, apply water three times daily, or apply (nontoxic) soil stabilizers on <br />all unpaved access roads, parking areas, and staging areas at <br />construction sites. <br /> <br />. Sweep streets daily (with water sweepers) if visible soil material has been <br />carried onto adjacent public streets. <br /> <br />. Suspend excavation and grading activity when winds (instantaneous <br />gusts) exceed 25 mph. <br /> <br />. Limit speed of vehicles to 15 mph or less at construction sites. (MMRP <br />Mitigation AQ-1). <br /> <br />Finding: With implementation of Measure AQ-1, this potential air quality <br />impact will be reduced to a less-than significant level. <br /> <br />Potential Impact 3-c: Construction emissions of CO and 03 precursors <br />(ROG and NOx) are already included in the emission inventory that is the basis <br />for BAAQMD's regional air quality plans and are not expected to impede the <br />BAAQMD's attainment or maintenance of 03 and CO standards. (IS/MND <br />Impact 3-c, p. 3-22). <br /> <br />Finding: According to the BAAQMD, if all control measures listed in AQ-1 <br />are implemented, air pollutant emissions of PM10 from construction activities are <br />considered less than significant. The identified air quality impact mitigation <br />measure is feasible and would reduce potential air quality impacts to a level <br />which would not be environmentally significant. Implementation of this measure <br />would reduce this impact to a less-than significant level. <br /> <br />C. CULTURAL RESOURCES <br />