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L3.Response to Comments L Response to Comment B-18 Commenter states that fugitive dust and engine exhaust should been evaluated together as Lconstruction emissions, not separately evaluated, as when they are evaluated together PMI 0 emissions from Project construction are significant, creating a new impact that was not disclosed in the Draft EIR. L PMIO emissions for the construction phase were not quantified(per SJVAPCD guidance). However,in both the Draft EIR analysis and the revised air quality analysis,the operational(on- L going)emissions of PM 10 included fugitive dust,emissions from processing equipment,non- road vehicles,and haul trucks. The revised emission level for maximum aggregate production(4 million tons per year) is 65.7 tons per year for the year 2008,and 64.1 tons per year for 2021. See the revised air quality analysis in Appendix A. LResponse to Comment B-19 Commenter states that the assumption that the average age of the typical construction equipment fleet is between 10 and 16 years old, which would result in higher emissions than the 5 year old equipment assumed in the DEIR. Equipment age is based on the best available information provided by the applicant. Response to Comment B-20 ` Commenter states that the DEIR should be revised to include cranes,forklifts, delivery trucks, pavers, trenchers, dredgers, compressors, drill rigs, welding machines, and construction worker commuting in its evaluation of construction emissions as described in Table 4.6-4. I 4 The revised air quality analysis includes additional equipment that would be used in a typical operational period.See revised air quality analysis and the operational assumptions,FEIR Appendix A.The revised analysis does not indicate a significant impact not already discussed in the Draft EIR. _ Response to Comment B-21 LCommenter states that since the Project will be constructed in phases, some phases will be graded when the quarry will be fully operational, therefore site preparation emissions would L coincide with emissions resulting from the operational phase and further increase the already significant and unavoidable impacts from the operational phase of the Project. See Response to Comment B-15. The air quality analysis already assumes a"reasonable" L, maximum scenario. For operations,maximum production is assumed at all times,and for construction,grading of the entire site at once is assumed. This is a very conservative (meaning "worst case")assumption, resulting in potentially significant impacts discussed in the DEIR. Additionally,it is extremely unlikely that both of these scenarios will occur simultaneously. L LGomez Ven alis Quarry Mining and Reclamation Project 3-9 ESA/203075 Final Erniranmental Impact Report June 2003 L