- (a) Stormwater or other precipitation that collects at an AST facility within a secondary containment area or oil transfer containment area shall be removed by the manually-activated pump or siphon or gravity drain pipe with which the containment area is equipped.
- (b) No person shall undertake a controlled discharge of stormwater to the environment from an oil transfer containment area or secondary containment structure unless the stormwater has no oil sheen or obvious gasoline contamination.
- (c) Stormwater that is contaminated with oil shall be discharged to an enclosed container for transport to a location authorized to receive the contaminated water, unless a groundwater discharge permit is obtained in which case the stormwater shall be treated to remove the oil prior to discharge in compliance with the permit.
- (d) All stormwater discharges shall be performed in accordance with all applicable local, state, and federal requirements.
- (e) Accumulated stormwater shall be drained as soon as practical and frequently enough to ensure that sufficient containment volume is always available to contain a release from the largest tank being contained.
Source. (See Revision Note at chapter heading for Env-Or 300) #10487, eff 2-7-14; ss by #14094, eff 10-4-24