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I� it 1 1 1 1 1 1 Fi 1 1 1 1 1 1 1 r� The City of Everett The Floyd & Snider Team Everett Landfill/Tire Fire Site Snohomish, and Kitsap counties. Regulation I defines the functions and governance of the Agency, classifies registered air contaminant sources which may contribute to air pollution, and provides permitting and variance information for these sources. Regulation II was developed to address the need to reduce ozone concentrations as required by amendments to the Federal Clean Air Act. It controls photochemically reactive volatile organic compounds (VOCs), which are precursors to ozone, to meet the National Ambient Air Quality Standard for ozone. Regulation III is potentially relevant to certain actions at the Everett Landfill. Regulation III focuses on toxic air pollutants including those emitted by landfills. Regulation III requires new sources, and in some cases existing sources, to demonstrate that the emissions from the source do not cause or contribute concentrations of toxic air pollutants at levels that could pose a threat to human health or welfare. PSCAA uses Acceptable Source Impact Levels (ASILs) for specific air toxics, which are provided in the regulations as screening tools for identifying those cases that deserve more scrutiny. Although developed originally by Ecology solely for evaluation of new projects, PSCAA has adopted ASILs and has discretion to use them to evaluate existing projects as well as new projects. They are used by PSCAA as an initial screening analysis to determine if the impacts of a specific project on air toxic levels deserve further investigation. Sources with ambient contributions below ASIL levels are presumed to be insignificant in terms of health and welfare impacts. Those with impacts above ASILs may be required to conduct a formal risk assessment to determine the impact to health and welfare caused by the contribution of the source to ambient levels of toxic air pollutants. CONTROLS FOR NEW SOURCES OF AIR TOXICS, CHAPTER 70.94 RCW; CHAPTER 173-460 WAC The regulations in Chapter 173-460 WAC, developed pursuant to Chapter 70.94 RCW, establish the systematic control of new sources emitting toxic air pollutants to prevent air pollution, reduce emissions to the extent possible and maintain such levels of air quality as will protect human health and safety. This regulation is a potential ARAR for actions that may create new sources of air toxics. This regulation is implemented through PSCAA Regulation III. AMBIENT AIR QUALITY STANDARDS FOR PARTICULATE MATTER, CHAPTER 70.94 RCW; CHAPTER 173-470 WAC The regulations in Chapter 173-470 WAC, which were developed pursuant to Chapter 70.94 RCW, establish maximum acceptable levels for particulate matter in the ambient air. WASHINGTON DANGEROUS WASTE REGULATIONS, CHAPTER 70.105 RCW; CHAPTER 173-303 WAC The regulations found in Chapter 173-303 WAC were developed to implement Chapter 70.105 RCW and are based on the state's authority to administer the Resource Conservation and Recovery Act (RCRA). The Dangerous Waste Regulations provide criteria for determining if solid wastes are dangerous or extremely hazardous. These regulations also provide rules that apply to the generators of hazardous substances and the treatment, manifesting, transporting, 11 Page 7 of 10 Attachment CAP-1