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Rule Title: INACTIVE AND OUT-OF-SERVICE UST SYSTEMS
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Department: ENVIRONMENTAL QUALITY
Chapter: UNDERGROUND STORAGE TANKS PETROLEUM AND CHEMICAL SUBSTANCES
Subchapter: Out-of-Service UST Systems and Closure
 
Latest version of the adopted rule presented in Administrative Rules of Montana (ARM):

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17.56.701    INACTIVE AND OUT-OF-SERVICE UST SYSTEMS

(1) An UST system is inactive when the owner or operator notifies the department that the UST is no longer in use for dispensing, depositing, or storing regulated substances or the department determines inactive status based on available information. The owner or operator shall continue operation and maintenance of corrosion protection on an out-of-service UST in accordance with ARM 17.56.302, and shall continue operation and maintenance of any release detection in accordance with ARM Title 17, chapter 56, subchapter 4. ARM Title 17, chapter 56, subchapters 5 and 6 must be complied with if a release is suspected or confirmed. However, release detection, release detection operation, and maintenance testing and inspections in ARM Title 17, chapter 56, subchapter 3 and 4 are not required as long as the UST system is empty. The UST system is empty when all materials have been removed using commonly employed practices so that no more than 2.5 centimeters (one inch) of residue, or 0.3 percent by weight of the total capacity of the UST system, remains in the system. In addition, spill and overfill operation and maintenance testing and inspections in subchapter 3 are not required.

(2) When an UST system is inactive or out of service for three months or more, owners and operators shall also:

(a) empty the UST system;

(b) leave vent lines open and functioning; and

(c) cap and secure all other lines, pumps, manways, and ancillary equipment.

(3) Out-of-service UST system components that do not meet the corrosion protection requirements of ARM 17.56.201 or 17.56.202 must, within 12 months of being taken out of service or, in the case of a found tank, within 12 months of its discovery, be:

(a) permanently closed in accordance with ARM 17.56.702 through 17.56.706; or

(b) brought into compliance with ARM Title 17, chapter 56, subchapter 2.

(4) In order to return an inactive UST to active status, owners and operators, in addition to complying with all applicable UST requirements under this subchapter, shall:

(a) when an UST has a valid operating permit and is inactive for 12 months or less, provide the department with 30 days advance written notice of the owner or operator's intent to return the UST to active status;

(b) when an UST has a valid operating permit and is inactive for more than 12 months:

(i) provide the department with 30 days advance written notice of the owner or operator's intent to return the UST to active status; and

(ii) perform a precision tank tightness test, line tightness tests and functionality tests of all mechanical and electronic release detection equipment, and submit all test results to the department. The owner and operator may return the UST to active status only upon receipt of notice from the department indicating that the test results are satisfactory. All tests must be conducted in accordance with accepted industry standards and must meet the performance requirements in ARM 17.56.407 and 17.56.408

(c) when an UST does not have a valid operating permit, but no more than 12 months have passed since the expiration date of the last operating permit issued for the UST:

(i) provide the department with advance written notice as required in (4)(b)(i); and

(ii) obtain a conditional operating permit in accordance with ARM 17.56.310 and a compliance inspection in accordance with ARM 17.56.309;

(d) when an UST does not have a valid operating permit, and more than 12 months have passed since the expiration date of the last operating permit issued for the UST:

(i) provide the department with advance written notice as required in (4)(b)(i);

(ii) perform a precision tank tightness test, line tightness tests, and functionality tests of all mechanical and electronic release detection equipment, and submit test results to the department. The owner and operator may return the UST to active status only upon receipt of notice from the department indicating that the test results are satisfactory. All tests must be conducted in accordance with accepted industry standards and must meet the performance requirements in ARM 17.56.407 and 17.56.408; and

(iii) obtain a conditional operating permit in accordance with ARM 17.56.310 and a compliance inspection in accordance with ARM 17.56.309;

(e) when an UST does not have a valid operating permit, continuous operation and maintenance of corrosion protection in accordance with ARM 17.56.302 cannot be demonstrated, and more than three years have passed since the expiration date of the last operating permit issued for the UST:

(i) meet all the requirements in (4)(d)(i) through (4)(d)(iii); and

(ii) show that the UST is structurally sound based upon an internal inspection.

 

History: 75-11-505, 75-11-509, MCA; IMP, 75-11-505, 75-11-509, MCA; NEW, 1989 MAR p. 1912, Eff. 11/23/89; TRANS, from DHES, 1995 MAR p. 2259; AMD, 2003 MAR p. 2759, Eff. 12/12/03; AMD, 2006 MAR p. 913, Eff. 4/7/06; AMD, 2007 MAR p. 1189, Eff. 8/24/07; AMD, 2010 MAR p. 1888, Eff. 8/27/10; AMD, 2016 MAR p. 1694, Eff. 9/24/16; AMD, 2018 MAR p. 1954, Eff. 10/6/18.


 

 
MAR Notices Effective From Effective To History Notes
17-400 10/6/2018 Current History: 75-11-505, 75-11-509, MCA; IMP, 75-11-505, 75-11-509, MCA; NEW, 1989 MAR p. 1912, Eff. 11/23/89; TRANS, from DHES, 1995 MAR p. 2259; AMD, 2003 MAR p. 2759, Eff. 12/12/03; AMD, 2006 MAR p. 913, Eff. 4/7/06; AMD, 2007 MAR p. 1189, Eff. 8/24/07; AMD, 2010 MAR p. 1888, Eff. 8/27/10; AMD, 2016 MAR p. 1694, Eff. 9/24/16; AMD, 2018 MAR p. 1954, Eff. 10/6/18.
17-385 9/24/2016 10/6/2018 History: 75-11-505, 75-11-509, MCA; IMP, 75-11-505, 75-11-509, MCA; NEW, 1989 MAR p. 1912, Eff. 11/23/89; TRANS, from DHES, 1995 MAR p. 2259; AMD, 2003 MAR p. 2759, Eff. 12/12/03; AMD, 2006 MAR p. 913, Eff. 4/7/06; AMD, 2007 MAR p. 1189, Eff. 8/24/07; AMD, 2010 MAR p. 1888, Eff. 8/27/10; AMD, 2016 MAR p. 1694, Eff. 9/24/16.
17-306 8/27/2010 9/24/2016 History: 75-11-505, 75-11-509, MCA; IMP, 75-11-505, 75-11-509, MCA; NEW, 1989 MAR p. 1912, Eff. 11/23/89; TRANS, from DHES, 1995 MAR p. 2259; AMD, 2003 MAR p. 2759, Eff. 12/12/03; AMD, 2006 MAR p. 913, Eff. 4/7/06; AMD, 2007 MAR p. 1189, Eff. 8/24/07; AMD, 2010 MAR p. 1888, Eff. 8/27/10.
8/24/2007 8/27/2010 History: 75-11-505, 75-11-509, MCA; IMP, 75-11-505, 75-11-509, MCA; NEW, 1989 MAR p. 1912, Eff. 11/23/89; TRANS, from DHES, 1995 MAR p. 2259; AMD, 2003 MAR p. 2759, Eff. 12/12/03; AMD, 2006 MAR p. 913, Eff. 4/7/06; AMD, 2007 MAR p. 1189, Eff. 8/24/07.
4/7/2006 8/24/2007 History: 75-11-505, 75-11-509, MCA; IMP, 75-11-505, 75-11-509, MCA; NEW, 1989 MAR p. 1912, Eff. 11/23/89; TRANS, from DHES, 1995 MAR p. 2259; AMD, 2003 MAR p. 2759, Eff. 12/12/03; AMD, 2006 MAR p. 913, Eff. 4/7/06.
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