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San Joaquin Valley Air Pollution Control District Page 5 District Reference No . 20220098 February 28, 2022 health risk modeling protocol . A development project would be considered to have a potentially significant health risk if the HRA demonstrates that the project - related health impacts would exceed the Districts significance threshold of 20 in a million for carcinogenic risk , or 1 . 0 for either the Acute or Chronic Hazard Indices . A project with a significant health risk would trigger all feasible mitigation measures . The District strongly recommends that development projects that result in a significant health risk not be approved by the land use agency . The District is available to review HRA protocols and analyses . For HRA submittals please provide the following information electronically to the District for review : • HRA (AERMOD ) model files • HARP2 files • Summary of emissions source locations , emissions rates , and emission factor calculations and methodology . For assistance , please contact the District ' s Technical Services Department by : • E - Mailing inquiries to : hramodeler(c, valleyair . org • Calling ( 559 ) 230 - 5900 • Visiting the Districts modeling guidance website at : http : //www . valleyair . org / busind / pto /Tox Resources/AirQualityMonitoring . htm . 3 ) Ambient Air Quality Analysis An Ambient Air Quality Analysis (AAAA ) uses air dispersion modeling to determine if emissions increases from a project will cause or contribute to a violation of State or National Ambient Air Quality Standards , The District recommends an AAQA be performed for the Project if emissions exceed 100 pounds per day of any pollutant . An acceptable analysis would include emissions from both project - specific permitted and non - permitted equipment and activities . The District recommends consultation with District staff to determine the appropriate model and input data to use in the analysis . Specific information for assessing significance , including screening tools and modeling guidance , is available online at the District ' s website : www . valleyair . org /cega . 4 ) On -site Solar Deployment It is the policy of the State of California that renewable energy resources and zero - carbon resources supply 100 % of retail sales of electricity to California end - use customers by December 31 , 2045 . While various emission control techniques and programs exist to reduce air quality emissions from mobile and stationary sources ,