An owner, an operator, and a person in charge of an AST system with a shop-fabricated AST shall:

1. A. Ensure the AST system is:

   1. (1) Properly selected for the oil storage application and type of oil stored; and
   2. (2) Constructed to an industry standard, including a UL, STI or API standard;

2. B. Ensure the foundation for a stationary shop-fabricated AST is:

   1. (1) Constructed to:

      1. (a) Support the AST;
      2. (b) Prevent movement and uneven settlement of the foundation and the AST; and
      3. (c) Provide positive drainage of water away from the foundation;
   2. (2) Capable of supporting the soil-bearing pressure of the AST and its contents; and
   3. (3) Designed by a qualified professional engineer using field and laboratory testing and analyses, if the AST system is located in an area subject to flooding;

3. C. Install an elevated AST system, unless:

   1. (1) An alternate AST system is approved by the Department in writing; and
   2. (2) The owner, the operator, and the person in charge of the alternate AST system installs, tests, and maintains a cathodic protection system in accordance with Regulation .10 of this chapter; and

4. D. Test a new, repaired, or relocated AST system for tightness in accordance with NFPA 30 “Flammable and Combustible Liquids Code”:

   1. (1) Upon completing the installation or repair of the AST system; and
   2. (2) Before placing the AST system in-service.

Authority: Environment Article, §§4-401—4-403, 4-405, 4-406, 4-408, 4-410—4-412, 4-415-1—4-418, 4-501, and 4-502, Annotated Code of Maryland

Effective date: June 13, 2022 (49:12 Md. R. 642)