Section R. 29.2122 - Requirements for petroleum UST systemsRule 22. Section 280.41 is amended to read as follows:
Section 280.41. Owners and operators of petroleum UST systems shall provide release detection for tanks and piping as follows:
(a) Tanks. Tanks shall be monitored at least once every 30 days for releases using 1 of the methods listed in section 280.43(d) to (i), except as follows: (1) UST systems that meet the performance standards in section 280.20 or 280.21 and the monthly inventory control requirements in section 280.43(a) or (b) shall use tank tightness testing conducted in accordance with section 280.43(c) at least once every 5 years until 10 years after the tank was installed.(2) A tank that has a capacity of 550 gallons or less and a tank with a capacity of 551 to 1,000 gallons that meet the tank diameter criteria in subsection 280.43(b) and that is not used for motor fueling may use weekly tank gauging conducted in accordance with section 280.43(b).(b) Piping. Underground piping that routinely contains regulated substances shall be monitored for releases in a manner that meets 1 of the following requirements: (1) Piping installed on or before April 11, 2016 must meet 1 of the following: (i) Pressurized piping. Underground piping that conveys regulated substances under pressure must be in compliance with both of the following requirements: (A) Be equipped with an automatic line leak detector in accordance with section 280.44(a).(B) Have an annual line tightness test conducted in accordance with section 280.44(b) or have monthly monitoring conducted in accordance with section 280.44(c).(ii) Suction piping. Underground piping that conveys regulated substances under suction must have a line tightness test conducted at least once every 3 years and in accordance with section 280.44(b) or use an applicable method conducted in accordance with section 280.44(c). Release detection is not required for suction piping that is designed and constructed to meet all of the following standards: (A) The belowgrade piping operates at less than atmospheric pressure.(B) The belowgrade piping is sloped so that the contents of the pipe will drain back into the storage tank if the suction is released.(C) Only 1 check valve is included in each suction line.(D) The check valve is located directly below, and as close as practical to, the suction pump.(E) A method is provided that allows compliance with paragraphs (B) to (D) of this subdivision to be readily determined.(2) Piping installed or replaced after April 11, 2016 must meet 1 of the following: (i) Pressurized piping shall be monitored for releases at least every 30 days in accordance with subsection 280.43(g) and be equipped with an automatic line leak detector in accordance with subsection 280.44(a).(ii) Suction piping shall be monitored for releases at least every 30 days in accordance with subsection 280.43(g). No release detection is required for suction piping that meets subparagraphs (b)(1)(ii)(A) to (E) of this section.Mich. Admin. Code R. 29.2122
1998-2000 AACS; 2018 MR 21, Eff. 11/14/2018