Administrative Rules of Montana › Department 17 - ENVIRONMENTAL QUALITY › Chapter 17.56 - UNDERGROUND STORAGE TANKS PETROLEUM AND CHEMICAL SUBSTANCES › Subchapter 17.56.3 - General Operating Requirements › Rule 17.56.304 - REPAIRS

Current through Register Vol. 13, July 5, 2024
(1) Owners and operators of UST systems shall
				ensure that repairs will prevent releases due to structural failure or
				corrosion for as long as the UST system is used to store regulated substances.
				Owners and operators shall receive a permit from the department prior to making
				any repair of an UST system.
(2)
				Tanks not meeting the design or construction standards of the applicable code
				of practice in (4) may not be repaired and must be closed in accordance with
				ARM
				17.56.702.
(3) Repairs must meet the following
				requirements:
(a) repairs to UST systems must
				be conducted in accordance with all applicable state, federal, and local laws
				and regulations and the applicable code of practice in (4). If there is a
				conflict in the referenced codes, the more stringent and protective code
				applies;
(b) tanks must be
				repaired according to the manufacturer's recommendation and under the
				supervision on site of a manufacturer's authorized representative or the tank
				manufacturer shall certify that the repaired tank meets the manufacturer's
				design standards;
(c) the tank
				manufacturer shall re-warranty the repaired tank for ten years or the remainder
				of the original warranty period, whichever is longer;
(d) the department may require excavation of
				the tank to be repaired so that the outer wall of the tank may be inspected and
				tested for defects;
(e) metal pipe
				sections and fittings that are damaged or have released product as a result of
				corrosion or other damage must be replaced;
(f) upon completion of the repair and before
				the UST system is placed in service, the following tests must be performed:
(i) repaired tanks and piping must be
				tightness tested in accordance with ARM
				17.56.407(1)(c)
				and
				17.56.408(1)(b);
(ii) corrosion protection systems
				circuitry must be tested to ensure it is still functioning; and
(iii) repairs to secondary containment areas
				of tanks and piping used for interstitial monitoring and to containment sumps
				used for interstitial monitoring of piping must have the secondary containment
				tested for tightness within 30 days following the date of completion of the
				repair according to one of the following:
(A)
				the manufacturer's instructions;
(B) a code of practice developed by a
				nationally recognized association or independent testing laboratory;
				or
(C) according to requirements
				established by the department.
(g) within six months following the repair of
				any cathodically protected UST system, the cathodic protection system must be
				tested in accordance with ARM
				17.56.302(1)(b)
				and (c) to ensure that it is operating
				properly;
(h) within 30 days
				following any repair to spill or overfill prevention equipment, the repaired
				spill or overfill prevention equipment must be tested or inspected, as
				appropriate, in accordance with [17.56.306 ]; and
(i) UST system owners and operators must
				maintain records (in accordance with ARM
				17.56.305
				) of each repair until the UST system is permanently closed or undergoes a
				change-in-service pursuant to ARM Title 17, chapter 56, subchapter 7.