Laserfiche WebLink
San Joaquin Valley Air Pollution Control District Page 5 <br /> District Reference No. 20200208 <br /> May 15, 2020 <br /> 10 or greater is considered to be significant and a refined Health Risk <br /> Assessment (HRA) should be performed. <br /> For your convenience, the District's prioritization calculator can be found at: <br /> http:www.valleyair.org/busind/pto/emission factors/Criteria/Toxics/Utilities/PRI <br /> ORITIZATI ON%20RMR%202016.XLS. <br /> 3b) The District recommends a refined HRA for projects that result in a prioritization <br /> score of 10 or greater. Prior to performing an HRA, it is recommended that the <br /> Project proponent contact the District to review the proposed modeling protocol. <br /> The Project would be considered to have a significant health risk if the HRA <br /> demonstrates that the Project related health impacts would exceed the Districts <br /> significance threshold of 20 in a million for carcinogenic risk and 1.0 for the Acute <br /> and Chronic Hazard Indices, and would trigger all feasible mitigation measures. <br /> The District recommends that Projects that result in a significant health risk not <br /> be approved. <br /> For HRA submittals, please provide the following information electronically to the <br /> District for review: <br /> • HRA AERMOD model files <br /> • HARP2 files <br /> • Summary of emissions source locations, emissions rates, and emission factor <br /> calculations and methodology. <br /> More information on toxic emission factors, prioritizations and HRAs can be obtained <br /> by: <br /> • E-Mailing inquiries to: hramodelercj�valleyair.org; or <br /> • The District can be contacted at (559) 230-6000 for assistance; or <br /> • Visiting the Districts website (Modeling Guidance) at: <br /> http://www.valleyair.org/busind/pto/Tox Resources/AirQualityMonitoring.htm. <br /> 4) Ambient Air Quality Analysis <br /> An ambient air quality analysis (AAAA) uses air dispersion modeling to determine if <br /> emissions increases from a project will cause or contribute to a violation of the ambient <br /> air quality standards. The District recommends that an AAAA be performed for the <br /> Project if emissions exceed 100 pounds per day of any pollutant. <br /> If an AAQA is performed, the analysis should include emissions from both Project <br /> specific permitted and non-permitted equipment and activities. The District <br />