SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT
RULE 407 - LIQUID AND GASEOUS AIR CONTAMINANTS
(Adopted May 7, 1976)(Amended April 2, 1982)
(a) A person shall not discharge into the atmosphere from any equipment:
(1) Carbon monoxide (CO) exceeding 2,000 ppm by volume measured on a dry basis, averaged over 15 consecutive minutes.
(2) Sulfur compounds which would exist as liquid or gas at standard conditions, calculated as sulfur dioxide (SO2) and averaged over 15 consecutive minutes, exceeding:
(A) In the South Coast Air Basin, 500 ppm by volume, effective July 1, 1982.
(B) In the Southeast Desert Air Basin portion of Riverside County:
(i) 500 ppm by volume for equipment which is issued a permit to construct or permit to operate after July 1, 1982.
(ii) 1,500 ppm by volume until January 1, 1984, and 500 ppm by volume thereafter for equipment that has been issued a permit to construct or permit to operate prior to July 1, 1982.
(b) The provisions of this rule shall not apply to emissions from:
(1) Stationary internal combustion engines.
(2) Propulsion of mobile equipment.
(3) Emergency venting due to equipment failure or process upset.
(c) The provisions of subsection (a)(2) of this rule shall not apply to:
(1) Equipment which is subject to the emission limits and requirements of source specific rules in Regulation XI.
(2) Equipment which complies with the gaseous fuel sulfur content limits of Rule 431.1.