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5.1 AIR QUALITY federally enforceable requirements mandated by Title V of the 1990 Clean Air Act Amendments. A permit amendment application for a modification to an existing Title V facility must be submitted and an amended permit issued by the SJVAPCD prior to commencing operations at the facility. The application must present a process description, all new stationary sources at the facility, applicable regulations,estimated emissions, associated operating conditions, alternative operating scenarios, a facility compliance plan, and a compliance certification. SJVAPCD Prohibitory Rules The general prohibitory rules of the SJVAPCD applicable to the project include the following: Rule 4001 (New Source Performance Standards)requires compliance with applicable federal standards of performance for new or modified stationary sources. Subpart KKKK(Standards of Performance for Stationary Combustion Turbines) applies to gas turbines with a heat input in excess of 1 MMBtu/hr that commence construction after February 18,2005. Subpart KKKK limits NOX and SO2 emissions from new gas turbines (and associated heat recovery steam generators) based on power output. The limits for turbines greater than 30 MW are 0.39 lb NOX per MW-hr and 0.58 lb SO2 per MW-hr. Subpart Dc (Standards of Performance for Small Industrial-Commercial-Institutional Steam Generating Units) 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, and therefore would apply to the proposed project's 65 MMBtu/hr auxiliary boiler. Rule 4002-National Emissions Standards for Hazardous Air Pollutants: This rule implements the federal NESHAPS regulations discussed above in Section 5.1.6.1.The combustion turbine NESHAP is not applicable to the proposed project because the facility will not be a major source of HAPs (i.e., 10 tpy of one HAP or 25 tpy of all HAPs). Rule 4101 -Visible Emissions: Prohibits visible emissions as dark or darker than Ringelmann No. 1 for periods greater than three minutes in any hour. Rule 4102-Nuisance: Prohibits the discharge from a facility of air pollutants that cause injury, detriment,nuisance,or annoyance to the public, or that damage business or property. Rule 4201 -Particulate Matter Emission Standards: Prohibits PM emissions in excess of 0.1 grains per dry standard cubic foot(gr/dscf). Rule 4301 -Fuel Burning Equipment: For"any furnace,boiler,apparatus,stack,and all appurtenances thereto,used in the process of burning fuel for the primary purpose of producing heat or power by indirect heat transfer" (i.e., applies to auxiliary boiler,but not to gas turbines, or emergency standby generator and fire water pump engines),combustion contaminant (defined in Rule 1020 (Definition 3.12) as particulate matter from burning carbon-containing material) emissions are limited to: 0.1 grain of combustion contaminants per dry standard cubic foot @ 12% CO2 10 pounds of combustion contaminants per hour Sulfur compounds as SO2 to 200 pounds per hour SAC/371322/082410013(LEC_5.1_AIR_QUALITY.DOC) 5.1-53