“Closure” means the process of permanently taking an AST or AST system out of service with the intent to not re-introduce oil to or otherwise use the AST for dispensing or storage of oil.

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 302.10)