1. (a) The owner shall report any significant change in the information presented on the original registration form to the department in writing within 30 days of the change.

2. (b) For the purpose of (a), above, “significant change” means:

   1. (1) Any addition or reduction in the aggregate oil storage capacity at the facility;
   2. (2) Taking an AST system out of service or removing or dismantling an AST system;
   3. (3) Any change in use as described in Env-Or 304.04;
   4. (4) Any change in the name of the facility that is not associated with a transfer of ownership;
   5. (5) Any time the oil content of a tank is changed from a flammable liquid to a combustible liquid, as defined in NFPA 30, or vice versa;

   6. (6) Any addition of release prevention or release detection measures to an AST system, such as:

      1. a. The replacement of single-walled piping with double-walled piping;
      2. b. The installation of high-level alarms;
      3. c. Interstitial space monitoring devices;
      4. d. The installation of secondary containment;
      5. e. The installation of cathodic protection; or
      6. f. Any other enhancement to an AST system that would reduce the threat of harm from an oil release to human health, public safety, or the environment; or
   7. (7) Any other change in the information provided to register the AST.

Source. (See Revision Note at chapter heading for Env-Or 300) #10487, eff 2-7-14; ss by #14094, eff 10-4-24 (formerly Env-Or 304.04)