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- MEMO - <br /> Environmental <br /> .. Sciences <br /> TABLE A-3 <br /> HEALTH RISK ASSESSMENT RECEPTORS <br /> ID Description Type ID Description Type <br /> .- 1 Southwest of Phase V Residence 7 Blewett Road Residence <br /> Haul Route 3 <br /> 2 West of Phase III Residence 8 Blewett Road Residence <br /> r Haul Route 3 <br /> 3 Northeast of Phase IVB Residence 9 Welty Road Residence <br /> Haul Route 3). <br /> 4 Blewett Road Residence 10 Route 33 Off-site Worker <br /> Haul Route 1 Haul.Route 3) <br /> 5 Southeast of Phase VI Off-site Worker 11 Route 33 Residence <br /> (Haul Route 3'- <br /> 6 Blewett Road Residence 12 Route 33 Residence <br /> Haul Route 3 (Haul Route 3) <br /> LThe HRA accounts for maximum and average production levels, maximum and average <br /> truck trips, improvements to on-road vehicle and offroad equipment emissions <br /> efficiencies, and expected project durations under each production level alternative. The <br /> 6. HRA also accounts for emission reduction measures which are defined as part of the <br /> project(e.g., fugitive dust mitigation planning). <br /> Item B <br /> A portion of the previous analysis for the DEIR was performed using CALINE4 to <br /> determine the DPM contribution of haul trucks using roadways. CALINE4 is a line <br /> source air quality model that was developed by Caltrans to assess air quality impacts near <br /> transportation facilities. S.IVAPCD requested that AERMOD be used to analyze the <br /> roadways. Thus, the AERMOD concentration impacts used in HARP (and results shown <br /> in Table A-1) include both stationary and mobile sources. <br /> Item C <br /> Tables B through D provide the revised emission estimates as a result of revisions to <br /> equipment and operations data. These revisions include, but are not limited to, revisions <br /> L in emission factors, elimination of the sand dryer in association with aggregate <br /> processing, clarification of asphalt annual processing rates, and requested revisions to <br /> methodologies. Relative to the DEIR emission estimates, emissions of particulate matter <br /> 10 microns or less in diameter (PMIo) have been revised so that the results are much <br /> lower while emissions of nitrogen oxides (NO,) are only slightly lower. Notably, <br /> estimates of annual NO, emissions remain above the significance threshold. The <br /> SJVAPCD does not have a significance threshold for PMIo stated in their Guide for <br /> Assessing and Mitigating Air Quality Impacts. However, the SJVAPCD has stated a <br /> guidance threshold of 15 tons per year based on New Source Review permitting <br /> L thresholds. To reduce emissions of PMIo, the project applicant will comply with <br /> SJVAPCD Regulation VIII (related to fugitive dust) and the control measures within. <br /> LPO Box 365 Indianola, WA 98342 <br /> T-360.265.8111 F- 727.578.5210 <br />