SU0007300 - Laserfiche WebLink

Home Browse Search

3.3 Air Quality and Climate Change F Policy 1: San Joaquin County,shall meet and maintain all State and national standards for air quality. Policy 2: Motor vehicle emissions shall be minimized through land use and transportation strategies,as well as by promotion of alternative fuels. Policy 3: Projects shall be designed to minimize concentrations of carbon monoxide (hot spots). rr 3.3.3 Impacts and Mitigation Measures Significance Criteria According to Appendix G of the CEQA Guidelines,a project would have a significant effect on air quality if it would: • Conflict with or obstruct implementation of the applicable air quality plan; E 0 Violate any air quality standard or contribute substantially to an existing or projected air quality violation; • Result in a cumulatively considerable net increase of any nonattainment pollutant (including releasing emissions that exceed quantitative thresholds for ozone precursors); F7 • Expose sensitive receptors to substantial pollutant concentrations; • Create objectionable odors affecting a substantial number of people; I • Generate GHG emissions, either directly or indirectly,that may have a significant impact on the environment;or 4� • Conflict with an applicable plan, policy,or regulation adopted for the purpose of reducing the emissions of GHG. Approach to Analysis Criteria Pollutants, Toxic Air Contaminants, and Greenhouse Gases Significance criteria one through four, six,and seven regarding criteria air pollutants,TACs, and GHGs will not be,analyzed further since the project(extending quarry operating hours)would not increase the geographic footprint of the operation,and would not increase the maximum daily or annual production limits.Thus, since the overall output of operations would not change under the project,the associated emissions would also be equivalent to the existing scenario. Odors ` Regarding significance criteria five above, odorous emissions would be generated by the on-site asphalt plant,which may result in nuisance impacts during the extended nighttime hours.This section presents the methodology used for the dispersion modeling analysis of the odoriferous pollutant H2S. The methodology is consistent with procedures documented in the EPA Guideline on Air Quality Models and SJVAPCD's Guide for Air Dispersion Modeling.Emissions are based on a r-- production level of 325 tons per hour for the hot mix batch plant and 250 tons per hour(maximum } capacity)for each storage silo. The H2S emission factors(0.005 lbs/ton of material for asphalt l Munn&Perkins Quarry Excavation Permit 3.3-17 ESA 1211M Draft EIR Apri12011 t .