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Proposed Costco Wholesale Redwood City GDF Expansion 7.B. - Page 147 <br /> Air Quality/Climate Change Analysis <br /> Page 2 <br /> ambient air quality impacts associated with vehicle queuing at the proposed 20-position <br /> GDF would still remain less than significant. (Appendix C, Table C-1 a). <br /> • Odors. Since Costco Wholesale will be required to install emissions control on its new <br /> dispensers, conduct emissions source testing to verify correct operation, and perform <br /> ongoing maintenance to ensure continued operation, odor impacts associated with the <br /> proposed project would remain less than significant. <br /> • Toxic Air Contaminants. Project-level cancer and non-cancer health risks associated <br /> with emissions of toxic air contaminants from proposed project operation would be less <br /> than significant. Cumulative health risks of proposed project operation, in conjunction <br /> with toxic air contaminant emissions from sources located within 1,000 feet of the facility, <br /> would also be less than significant. <br /> • Global Climate Chanqe. Based on information presented in the July 30, 2012 <br /> Preliminary Transportation Assessment, vehicle queue time for the existing 12-position <br /> facility is expected to decrease significantly, from the current 281 hours per day to an <br /> anticipated level of 91 hours per day for the proposed project. As a result, emissions of <br /> greenhouse gas emissions is expected to decrease (Appendix B, Table B-3), and the <br /> proposed project would have a less than significant impact on global climate change. At <br /> the request of City of Redwood City staff, operational greenhouse gas emissions were <br /> also analyzed to reflect an extreme maximum assumption that existing facility vehicle <br /> trips will double. This increases emissions associated with vehicle trips and vehicle <br /> queuing (Appendix B, Tables B-2 and B-3, "Extreme Maximum Assumptions"), but the <br /> results still remain less than significant (Table 17). Note that the extreme maximum <br /> assumption that existing facility vehicle trips will double is extremely unlikely. This is <br /> because for this to occur, the proposed facility's weekday average hourly vehicle trips <br /> would need to be 75 percent higher than the existing facility's weekday peak hour <br /> vehicle trips. <br /> 7/30/2012 <br />