COMPLIANCE INFO_FINAL INITIAL STUDY/MITIGATED NEGATIVE DECLARATION 5/25

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Memorandum March 25, 2025 Page 6 21202-23 North County Landfill_AQ_0307 identified 188 hazardous air pollutants that EPA is required to control. Regulation of HAPs is achieved through federal, state, and local controls on industrial, mobile, and indoor sources. In 1988, California passed the California Clean Air Act (California Health and Safety Code sections 39600 et seq.), which, like its federal counterpart, required the designation of areas as attainment or non-attainment, but based these designations on state ambient air quality standards rather than the federal standards. CARB is responsible for establishing and reviewing the CAAQS, developing and managing the State Implementation Plan, identifying TACs, and overseeing the activities of regional air quality management districts. To achieve the CAAQS, criteria air pollutant emissions are managed through control measures that are described in regional air quality plans as well as by emission limitations placed on permitted stationary sources. In California, mobile emissions sources (e.g., construction equipment, trucks, automobiles) are regulated by CARB, and stationary emissions sources (e.g., industrial facilities) are regulated by the regional air quality management districts. According to CARB,3 San Joaquin Valley is designated as nonattainment for the 8-hour ozone, PM10, and PM2.5 standards and is designated an attainment or unclassified area for all other pollutants based on the CAAQS. In 2016, the EPA established two regulations—the New Source Performance Standards (NSPS) for new landfills and the Emission Guidelines (EG) for existing landfills—aimed at reducing methane emissions from landfill gas. The EG require the installation of a LFG collection and control system (GCCS) at MSW landfills that exceed a specified design capacity and NMOC emission threshold. At the State level, in response to California Assembly Bill 32, CARB adopted the Landfill Methane Regulation in 2010, which requires MSW landfills to reduce methane and other air pollutant emissions through emissions monitoring and capturing fugitive methane emissions. Promulgated in 2016, California Senate Bill (SB) 1383 set a statewide target to reduce organic waste disposed of in landfills of 50 percent by 2020 and 75 percent by 2025. In addition, SB 1383 requires recovering at least 20 percent of disposed edible food for human consumption by 2025. As organic waste is a primary substance that generates LFG, diverting organic waste from landfills can reduce LFG emissions. In addition, MSW landfills are regulated under local air district rules that implement the federal requirements of the NSPS and EG, 40 Code of Federal Regulations Part 60 Subparts WWW and Cc, for MSW landfills. Regional Regulations The project is located in the SJVAB, which is under the jurisdiction of the Valley Air District. The mission of the Valley Air District is to improve the health and quality of life for all Valley residents through efficient, effective and entrepreneurial air quality management strategies. The Valley Air District has adopted several air quality attainment plans for particulate matter and ozone over the years that identify measures needed in the SJVAB to attain NAAQS. The 3 California Air Resources Board (CARB), 2023. Maps of State and Federal Area Designations. Available at: https://ww2.arb.ca.gov/resources/documents/maps-state-and-federal-area-designations. Accessed Feb 14, 2025.