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§ 63.1561 Am I subject to this subpart?
(a) You are subject to this subpart if you own or operate a petroleum refinery that is located at a major source of HAP emissions.
(1) A petroleum refinery is an establishment engaged primarily in petroleum refining as defined in the Standard Industrial Classification (SIC) code 2911 and the North American Industry Classification (NAIC) code 32411, and used mainly for: