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UNC Chapel Hill Permit <br /> PART VII - ORGANIC AIR EMISSIONS REQUIREMENTS FOR PROCESS VENTS AND <br /> EQUIPMENT LEAKS <br /> A. GENERAL INTRODUCTION <br /> In the June 21, 1990, Federal Register, EPA published the final rule for Phase I Organic Air <br /> Emission Standards (40 CFR Parts 264 and 265, Subparts AA and BB) for hazardous waste <br /> treatment, storage, and disposal facilities. Subpart AA contains emission standards for process <br /> vents associated with distillation fractionation, thin-film evaporation, solvent extraction, and air or <br /> steam stripping operations that process hazardous waste with an annual average total organic <br /> concentration of at least ten(10)parts per million (ppm)by weight. SUBPART AA DOES NOT <br /> APPLY TO AIR STRIPPING OPERATIONS USED FOR CORRECTIVE ACTION PURPOSES. <br /> Subpart BB contains emission standards that address leaks from specific equipment(i.e. pumps, <br /> valves, compressors, etc.) that contains or contacts hazardous waste that has an organic <br /> concentration of at least ten(10)percent by weight. <br /> B. ORGANIC AIR EMISSION STANDARDS <br /> The Permittee has no units at the present time to which the Organic Air Emissions Requirements of <br /> 40 CFR 264, Subpart AA (for process vents), and/or Subpart BB (for equipment leaks) as adopted <br /> in 15A NCAC 13A .0113 applies. If the Permittee should change, modify or otherwise identify any <br /> unit that is or has become subject to these regulations, the Permittee is required to comply with all <br /> 40 CFR 264 as adopted in 15A NCAC 13A .0109, Subpart AA and Subpart BB regulations and is <br /> required to submit all 40 CFR 270.24 and 270.25 as adopted in 15A NCAC 13A .0113 <br /> informational requirements within thirty(30) calendar days after implementation of the unit's <br /> modification. <br /> VII-I <br />