ARCHIVED REPORTS LEC APPLICATION FOR CERTIFICATION

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5.1 AIR QUALITY Subpart KKKK,Standards of Performance for Stationary Gas Turbines (constructed after February 18,2005) is applicable to the combined-cycle gas turbine and fired waste-heat recovery boiler;and Subpart Dc (Standards of Performance for Small Industrial-Commercial-Institutional Steam Generating Units),which applies to boilers that burn fossil fuel with a heat input capacity equal to or less than 100 MMBtu/hr and greater than or equal to 10 MMBtu/hr, is applicable to the auxiliary boiler. These standards are implemented at the local level with federal and state oversight. Administering Agency:SJVAPCD,with EPA Region 9 and CARB oversight. National Emission Standards for Hazardous Air Pollutants Authority: Clean Air Act§ 112,42 USC§7412;40 CFR Part 63 Purpose:Establishes national emission standards to limit emissions of hazardous air pollutants (HAPs, or air pollutants identified by EPA as causing or contributing to the adverse health effects of air pollution but for which NAAQS have not been established) from facilities in specific source categories.16 These standards are implemented at the local level with federal oversight. Only the NESHAP for combustion turbines,which limits formaldehyde emissions from turbines, is potentially applicable to the proposed project. However, as discussed further below,this NESHAP is not applicable to the proposed project because the facility would not be a major source of HAPs (i.e., 10 tpy of one HAP or 25 tpy of all HAPs). Thus,NESHAPs requirements will not be addressed further. Administering Agency:SJVAPCD,with EPA Region 9 oversight. Prevention of Significant Deterioration Program Authority: Clean Air Act§160-169A,42 USC§7470-7491;40 CFR Parts 51 and 52 Purpose:Requires pre-construction review and permitting of new or modified major stationary sources of air pollution to prevent significant deterioration of ambient air quality. PSD applies to pollutants for which ambient concentrations do not exceed the corresponding NAAQS (i.e.,attainment pollutants). The PSD program allows new sources of air pollution to be constructed,or existing sources to be modified,while preserving the existing ambient air quality levels,protecting public health and welfare,and protecting Class I areas (e.g., national parks and wilderness areas). The PSD requirements apply, on a pollutant-specific basis,to any project that is a new major stationary source or a major modification to an existing major stationary source. A major source is a listed facility (one of 28 PSD source categories listed in the federal Clean Air Act) that emits at least 100 tpy,or any other facility that emits at least 250 tpy. The PSD program contains the following elements: • Air quality monitoring • BACT • Air quality impact analysis 16 A major source of HAPs is one that emits more than 10 tons per year(tpy)of any individual HAP,or more than 25 tpy of all HAPs combined. 5.1-44 SAC/371322/082410013(LEC_5.1_AIR_QUALITY.DOC)