§ 245.442. Periodic monitoring requirements for petroleum underground storage tank systems.
(a) Owners and operators of underground storage tank systems that store petroleum installed after November 10, 2007, and underground piping installed after November 10, 2007, that routinely contain regulated substances shall perform interstitial monitoring in accordance with § 245.444(6) (relating to methods of release detection for tanks) at least once every 30 days. Underground piping installed after November 10, 2007, that conveys regulated substances under pressure must be equipped and operated with an automatic line leak detector with an automatic pump shut off device in accordance with § 245.445(1) (relating to methods of release detection for piping). Release detection is not required for suction piping that meets the requirements in subsection (b)(2)(ii)(A)—(E).
(b) Owners and operators of petroleum underground storage tank systems installed on or before November 10, 2007, shall provide release detection for tanks and piping as follows:
(1) Tanks. Tanks shall be monitored at least every 30 days for releases using one of the methods in § 245.444(1)—(8).
(2) Piping. Underground piping that routinely contains regulated substances shall be monitored for releases in a manner that meets one of the following requirements:
(i) Pressurized piping. Underground piping that conveys regulated substances under pressure shall meet the following requirements:
(A) Be equipped with an automatic line leak detector in accordance with § 245.445(1) (relating to methods of release detection for piping).
(B) Have an annual line tightness test conducted in accordance with § 245.445(2) or have monthly monitoring conducted in accordance with § 245.445(3).
(ii) Suction piping. Underground piping that conveys regulated substances under suction shall either have a line tightness test conducted at least every 3 years and in accordance with § 245.445(2), or use a monthly monitoring method conducted in accordance with § 245.445(3). Release detection is not required for suction piping that is designed and constructed to meet the following standards:
(A) The below grade piping operates at less than atmospheric pressure.
(B) The below grade piping is sloped so that the contents of the pipe will drain back into the storage tank if the suction is released.
(C) No more than one check valve is included in each suction line.
(D) Check valves are located directly below and as close as practical to or within the suction pump.
(E) A method is provided that allows compliance with clauses (B)—(D) to be readily determined.
Source The provisions of this § 245.442 amended November 9, 2007, effective November 10, 2007, 37 Pa.B. 5979; amended December 21, 2018, effective December 22, 2018, 48 Pa.B. 7875. Immediately preceding text appears at serial pages (331080) to (331081).
Cross References This section cited in 25 Pa. Code § 245.403 (relating to applicability); 25 Pa. Code § 245.444 (relating to methods of release detection for tanks); 25 Pa. Code § 245.445 (relating to methods of release detection for piping); 25 Pa. Code § 245.446 (relating to release detection recordkeeping); and 25 Pa. Code § 252.3 (relating to scope).
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