CFR > Title 30 - Mineral Resources > CHAPTER II—MINERALS MANAGEMENT SERVICE, DEPARTMENT OF THE INTERIOR > SUBCHAPTER B—OFFSHORE (parts 250 to 285) > PART 250—OIL AND GAS AND SULPHUR OPERATIONS IN THE OUTER CONTINENTAL SHELF > SUBPART K—Oil and Gas Production Requirements (§250.1150 to §250.1167) > 250.1164—What are the requirements for flaring or venting gas containing H 2 S?

250.1164—What are the requirements for flaring or venting gas containing H 2 S?

(a) You may not vent gas containing H2 S, except for minor releases during maintenance and repair activities that do not result in a 15-minute time-weighted average atmosphere concentration of H2 S of 20 ppm or higher anywhere on the platform.
(b) You may flare gas containing H2 S only if you meet the requirements of §§ 250.1160, 250.1161, 250.1163, and the following additional requirements:
(1) For safety or air pollution prevention purposes, the Regional Supervisor may further restrict the flaring of gas containing H2 S. The Regional Supervisor will use information provided in the lessee's H2 S Contingency Plan ( § 250.490(f) ), Exploration Plan, DPP, DOCD, and associated documents to determine the need for restrictions; and
(2) If the Regional Supervisor determines that flaring at a facility or group of facilities may significantly affect the air quality of an onshore area, the Regional Supervisor may require you to conduct an air quality modeling analysis, under § 250.303, to determine the potential effect of facility emissions. The Regional Supervisor may require monitoring and reporting, or may restrict or prohibit flaring, under §§ 250.303 and 250.304.
(c) The Regional Supervisor may require you to submit monthly reports of flared and vented gas containing H2 S. Each report must contain, on a daily basis:
(1) The volume and duration of each flaring and venting occurrence;
(2) H2 S concentration in the flared or vented gas; and
(3) The calculated amount of SO2 emitted.