§ 245.443. Requirements for hazardous substance underground storage tank systems.
Owners and operators of hazardous substance underground storage tank systems shall provide release detection that meets the following requirements:
(1) Hazardous substance underground storage tank systems installed after November 10, 2007, shall perform interstitial monitoring in accordance with § 245.444(6) (relating to methods of release detection for tanks).
(2) Release detection at hazardous substance underground storage tank systems installed on or before November 10, 2007, must meet the following requirements:
(i) Secondary containment systems.
(A) Secondary containment systems shall be designed, constructed and installed to:
(I) Contain regulated substances released from the tank system until they are detected and removed.
(II) Prevent the release of regulated substances to the environment at any time during the operational life of the underground storage tank system.
(III) Be checked for evidence of a release at least every 30 days.
(3) The provisions of 40 CFR 264.193 (relating to containment and detection of releases) may be used to comply with the requirements in this paragraph.
(i) Double walled tanks shall be designed, constructed and installed to:
(A) Contain a release from any portion of the inner tank within the outer wall.
(B) Detect the failure of the inner wall.
(ii) External liners, including vaults, shall be designed, constructed and installed to:
(A) Contain 100% of the capacity of the largest tank within its boundary.
(B) Prevent the interference of precipitation or ground-water intrusion with the ability to contain or detect a release of regulated substances.
(C) Surround the tank completely making it capable of preventing lateral as well as vertical migration of regulated substances.
(4) Underground piping shall be equipped with secondary containment that satisfies the requirements in subparagraph (i) for example, trench liners, jacketing or double-walled pipe. In addition, underground piping that conveys regulated substances under pressure shall be equipped with an automatic line leak detector in accordance with § 245.445(1) (relating to methods of release detection for piping).
(5) Other methods of release detection may be used if owners and operators:
(1) Demonstrate to the Department that an alternate method can detect a release of the stored substance as effectively as any of the methods allowed in § 245.444(1)—(8) can detect a release of petroleum.
(ii) Provide information to the Department on effective corrective action technologies, health risks and chemical and physical properties of the stored substance, and the characteristics of the underground storage tank site.
(iii) Obtain approval from the Department to use the alternate release detection method before the installation and operation of the new underground storage tank system.
Source The provisions of this § 245.443 amended December 21, 2018, effective December 22, 2018, 48 Pa.B. 7875. Immediately preceding text appears at serial pages (331082) to (331083).
Cross References This section cited in 25 Pa. Code § 245.403 (relating to applicability); 25 Pa. Code § 245.435 (relating to reporting and recordkeeping); 25 Pa. Code § 245.446 (relating to release detection recordkeeping); and 25 Pa. Code § 252.3 (relating to scope).
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