SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT

RULE 468 - SULFUR RECOVERY UNITS
(Adopted May 7, 1976)(Amended October 8, 1976)

A person shall not discharge into the atmosphere from any sulfur recovery unit producing elemental sulfur, effluent process gas containing more than:

(a) 500 ppm of sulfur compounds expressed as sulfur dioxide, calculated on a dry basis averaged over a minimum of 15 consecutive minutes.

(b) 10 ppm of hydrogen sulfide averaged over a minimum of 15 consecutive minutes and calculated on a dry basis.

(c) 90 kilograms (198.5 pounds) per hour of sulfur compounds expressed as sulfur dioxide. Any sulfur recovery unit having an effluent process gas discharge containing less then 5 kilograms (11.0 pounds) per hour of sulfur compounds expressed as sulfur dioxide may dilute to meet the provision of subsection (a) above until October 1, 1976.