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3.Response to Comments fte ` Response to Comment B-44 Commenter states that the Draft EIR should be revised based on the maximum potential of its proposed equipment or, alternatively, the Applicant's operations must be limited to the maximum throughput used for emission estimates from Project operations, and that for the latter case, the Draft EIR should include a mitigation measure to explicitly require that the SIVAPCD's Permit to Operate limit the Project's throughput to 4.0 million ton per year, assumed as the Project baseline in emission calculations. VON 4 million tons per year is the maximum permitted production level requested by the applicant and will be enforced through the Conditional Use Permit. Therefore,emission calculations reflect the maximum permitted level, rather than a theoretical maximum output that would not be allowed bw under the discretionary approvals being sought. Response to Comment B-45 Commenter suggests a list of methods to reduce PMIO emissions. See Response to Comments B-25. Response to Comment B-46 Commenter states that the following mitigation measures, as recommended by the.SIVAPCD, should be explicitly required for exhaust emissions from off-road mobile equipment: • Use alternative fueled construction equipment; • Minimize idling time (e.g., 10 minutes); le • Limit the hours of operation ofheavy duty equipment and/or the amount of equipment in ` use; • Replace fossil fueled equipment with electrically driven equivalents(provided they are not run via a portable generator set;and • Curtail construction periods during periods of high ambient pollutant concentrations; this may include ceasing construction activity during the peak-hour of vehicular traffic on adjacent roadways (days declared as Spare the Air Days by the District). (SIVAPCD 01103,pp. 2-3) LCommenter states that the Draft EIR's assumptions and conclusions regarding mitigation for I Project operational emissions from mobile equipment are erroneous for a number of reasons. • the goal of mitigation is to reduce emissions to the maximum extent feasible even if it is not possible to reduce the emissions to below significance. The Draft EIR's all-or- nothing approach to mitigation is not acceptable under CEQA. Cena Vernalis Quarry Mining and Reclamation Project 3-17 ESA 1203015 Finai Env'xonmental impact Report June 2008 L