- (a) All tanks installed on or after September 17, 1985 shall have a leak monitoring system that is continuously operated.
- (b) All double-wall tanks installed on or after September 17, 1985 shall have continuous monitoring of the interstitial space for both the regulated substance being stored and water.
- (c) All tanks not included in (a) or (b), above, shall have continuous monitored secondary containment as required by Env-Or 408.05(c).
Source. (See Revision Note #1 at chapter heading for Env-Or 400) #10393, eff 9-1-13; ss by #12643, eff 10-10-18 (See Revision Note #2 at chapter heading for Env-Or 400)