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7.B. - Page 74 Redwood City Chapter 4.Environmental Impact Analysis Would the project: a. Conflict with or obstruct implementation of the applicable air quality plan? No New Impact.The most recent clean air plan is the Bay Area 2010 Clean Air Plan that was adopted by BAAQMD in September 2010.The proposed modifications would not conflict with the latest clean air planning efforts because the project with the proposed modifications would have emissions well below BAAQMD thresholds,CAAQS,and NAAQS.Because the Clean Air Plan is based on land use assumptions from the City's General Plan and the project with the proposed modifications is consistent with the General Plan,the project with the proposed modifications is deemed consistent with the Clean Air Plan and would not conflict with or obstruct implementation of the plan.There would be no new impact. b. Violate any air quality standard or contribute substantially to an existing or projected air quality violation? Construction Emissions Less-than-Significant New Impact with Mitigation Incorporated. Construction of the proposed modifications would involve the following activities adjacent to and north of the existing fueling center:removing existing asphalt and concrete,below-grade earthwork,relocating an existing storm drain,preparing base material prior to paving,asphalt paving and concrete work,extending fuel lines,installing fueling positions,installing a canopy for the new fueling positions,landscaping,and pavement striping.These construction activities are expected to result in fugitive dust emissions associated with material handling and earth movement; onsite combustion emissions associated with off-road equipment operation; offsite combustion emissions associated with on-road haul and concrete trucks,and on-road employee vehicles; and off-gassing emissions associated with asphalt paving and pavement striping.Detailed documentation of construction activity emission calculations is presented in Appendix A.Daily average emissions are summarized in Table 4.4-4.As shown in the table,emissions of ROG,NOx,exhaust PM10,and exhaust PM2.5 are all below the daily construction-related criteria pollutant emissions thresholds recommended by the BAAQMD.With respect to fugitive PM10 and fugitive PM2.5, BAAQMD has not established specific,quantitative thresholds of significance for these emissions,but has determined that such emissions should be deemed less than significant with the imposition of best management practices (BMPs) set forth in the BAAQMD CEQA Guidelines.Costco Wholesale has agreed to implement all Basic Control Mitigation Measures and Enhanced Control Mitigation Measures,determined by BAAQMD to meet or exceed the BMP-based threshold of significance,as identified in Standard Condition 4.5-1 and Mitigation Measure 4.5-1 (Standard Condition 4.5-1 and Mitigation Measure 4.5-1 of the 2007 FEIR [page 4.5-10]).As a result,criteria pollutant emissions associated with construction of the proposed modifications would be consistent with Policy PS-1.5 in the General Plan and would be less than significant with the mitigation incorporated. Standard Condition 4.5-1 (2007 FEIR Standard Condition 4.5-1):During construction activities, the following required"Basic Control Measures"will be implemented to control emissions of PM10: . Water all active construction areas at least twice daily. . Cover all trucks hauling soil,sand,and other loose materials or require all truck to maintain at least 2 feet of freeboard. Addendum No.2 to the Environmental Impact Report for 4 Z9 September 2012 the Redwood City Costco Wholesale Project ICF 00154.12