24.0710 Performance standards for new UST systems.

Cite as [A.S.A.C. § 24.0710]

In order to prevent releases due to structural failure, corrosion, or spills and overfills for a long as the UST system is used to store regulated substances, all owners and operators of new UST systems must meet the following requirements.

(a) Tanks. Each tank must be properly designed and constructed, and any portion underground that routinely contains product must be protected from corrosion, in accordance with a code of practice developed by a nationally recognize association or independent testing laboratory as specified below:

(1) The tank is constructed of fiberglass-reinforced plastic; or

Note: The following industry codes may be used to comply with paragraph (a)(1) of this section: Underwriters Laboratories Standard 1316, “Standard for Glass- Fiber-Reinforced Plastic Underground Tanks for Petroleum Products”, Underwriter’s Laboratories of Canada CAN4-S615-M83,Standard for Reinforced Plastic Underground Tanks for Petroleum Products” or American society of Testing and Materials Standard D4021-86, “Standard Specification for Glass-Fiber-Reinforced Polyester Underground Petroleum Storage Tanks.”

(2) The tank is constructed of steel and cathodically protected in the following manner:

(i) The tank is coated with suitable dielectric material;

(ii) Field-installed cathodic protection systems are designed by a corrosion expert;

(iii) Impressed current systems are designed and allow determination of current operating status as required in 24.0721; and

(iv) Cathodic protection system are operated and maintained in accordance with 24.0721 or according to guidelines established by the implementing agency.

Note: The following codes and standards may be used to comply with paragraph (a)(2) of this section:

(A) Steel Tank Institute “Specification for STI-P3 System of External Corrosion Protection of Underground Steel Storage Tanks”;

(B) Underwriters Laboratories Standard 1746, “Corrosion Protection Systems For Underground Storage Tanks”;

(C) Underwriters Laboratories Of Canada CAN4-S603-M85, “Standard for Steel Underground Tanks for Flammable and Combustible Liquids,” and CAN4-G03. 1-M85, “Standard for Galvanic Corrosion Protection Systems for Underground Tanks for Flammable and Combustible Liquids,” and CAN4-S631-M84, Isolating Bushings for Steel Underground Tanks Protected with Coatings and Galvanic Systems”; or

(D) National Association of Corrosion Engineers Standard RP-02- 85, “Control of External Corrosion on Metallic Buried, or Submerged Liquid Storage System,” and Underwriters Laboratories Standard 58 “Standard for Steel Underground Tanks for Flammable and Combustible Liquids.”

(3) The tank is constructed of metal without additional corrosion protection measures provided that:

(i) The tank is installed at a site that is determined by a corrosion expert not to be corrosive enough to cause it to have a release due to corrosion during its operating life; and

(ii) Owners and operators maintain records that demonstrate compliance with the requirements of paragraphs (a)(3)(i) for the remaining life of the tank; or

(4) The tank construction and corrosion protection are determined by the implementing agency to be designed to prevent the release or threatened release of any stored regulated substance in a manner that is no less protective of human health and the environment than paragraphs (a)(1) through (a)(3) of this section.

(b) Piping. The piping that routinely contains regulated substances and is in contact with the ground must be properly designed, constructed, and protected from corrosion in accordance with a code of practice developed by a nationally recognized association or independent testing laboratory as specified below:

(1) The piping is constructed of fiberglass-reinforced plastic; or

Note: The following codes and standards may be used to comply with paragraph (b)(1) of this section:

(A) Underwriters Laboratories Subject 971, “UL Listed Non-Metal Pipe”;

(B) Underwriters Laboratories Standard 567, “Pipe Connectors for Flammable and

Combustible and LP Gas”;

(C) Underwriters Laboratories of Canada Guide UCL-107, “Glass Fiber Reinforced Plastic Pipe and fittings for Flammable Liquids”; and

(D) Underwriters Laboratories of Canada Standard CAN 4-S633-M81, “Flexible Underground Hose Connectors.”

(2) The piping is constructed of steel and cathodically protected in the following manner:

(i) The piping is coated with a suitable dielectric material:

(ii) Field installed cathodic protection systems are designed by a corrosion expert;

(iii) Impressed current systems are designed to allow determination of current operating status as required in 24.0721; and

(iv) Cathodic protection systems are operated and maintained in accordance with 24.0721 or guidelines established by the implementing agency; or

Note: The following codes and standards may be used to comply with paragraph (b)(2) of this section:

(A) National Fire Protection Association Standard 30, “Flammable and Combustible Liquids Code”;

(B) American petroleum Institute Publication 1615, “Installation of Underground Petroleum Storage System”;

(C) American Petroleum Institute Publication 1632, “Cathodic Protection of Underground Petroleum Storage Tanks and Piping Systems”; and

(D) National Association of Corrosion Engineers Standard RP-01-69 “Control of External Corrosion on Submerged Metallic Piping Systems

(3) The piping is constructed of metal without additional corrosion protection measures provided that:

(i) The piping is installed at a site that is determined by a corrosion expert to not be corrosive enough to cause it to have a release due to corrosion during its operating life; and

(ii) Owners and operators maintain records that demonstrate compliance with the requirements of paragraph (b)(3)(i) of this section for the remaining life of the piping; or

(4) The piping construction and corrosion protection are determined by the

Implementing agency to be designed to prevent the release or threatened

Release of any stored regulated substance in a manner that is no less protective of human health and the environment than the requirements in paragraphs (b)(1) through (3) of this section.

(c) Spill and overfill prevention equipment.

(1) Except as provided in paragraph (c)(2) of this section, to prevent spilling and overfilling associated with product transfer to the UST system, owners and operators must use the following spill and overfill prevention equipment:

(i) Spill prevention equipment that will prevent release of product to the environment when the transfer hose is detached from the fill pipe (for example, a spill catchment basin); and

(ii) Overfill prevention equipment that will:

(A) Automatically shut off flow into the tank when the tank is no more than 95 percent full; or

(B) Alert the transfer operator when the tank is no more than 90 percent full by restricting the flow into the tank or triggering a high –level alarm.

(2) Owners operators are not required to use spill and overfill prevention equipment specified in paragraph (c)(1) of this section if:

(i) Alternatives equipment is used that is determined by the implementing agency to be no less protective of human health and the environment than the equipment specified in paragraph (c)(1)(i) or (ii) of this section; or (ii) The UST system is filled by transfers of no more than 25gallons at one time.

(d) Secondary containment. Secondary containment may consist of:

(1) a double walled tank, or

(2) a pit lined with a low permeability barrier or synthetic liner, or

(3) an impermeable vault, or

(4) any other equally effective design approved in writing by the commission;

(e) Emergency Shutoff.

(1) To prevent the product from escaping if the dispenser is knocked over or dislocated by ground heave, an emergency shutoff method described in paragraph (e)(2) of this section must be installed for USTs with pressurized dispensing systems.

(2) Emergency shutoff methods. The owner and operator must equip the UST system with one of the following emergency shutoff methods:

(i) an impact/fire valve with the shear section of the valve installed within ½ inch of the pump. Anchor the entire assembly rigidly to the island to make certain the piping will break at the shear sections, and the spring and thermally actuated device functions to close the valve

(ii) any other equally effective method approved in writing by the implementing agency.

(f) Installation. All tanks and piping must be properly installed in accordance with practice developed by a nationally recognized association or independent testing laboratory and in accordance with the manufacturer’s instructions.

Note: Tank and Piping system installation practices and procedures described to comply with the requirements of paragraph (d) of this section: (i) American Petroleum Institute Publication 1615, “Installation of Underground Petroleum Storage System”; or (ii) Petroleum Equipment Institute Publication RP100, “Recommended Practices for Installation of Underground Liquid Storage “Systems”; or (iii) American National Standards Institute Standard B31.3 “Petroleum Refinery Piping,” and American National Standards Institute B31.4 “Liquid Petroleum Transportation Piping System.

(g) Certification of Installation. All owners and operators must ensure that one or more of the following methods of certification, testing, or inspection is used to demonstrate compliance on the UST notification form in accordance with 24.0712.

(1) The installer has been certified by the tank and piping manufacturer’s; or

(2) The installation has been certified or licensed by the implementing agency; or

(3) The installation has been inspected and certified by a registered professional engineer with education and experience in UST system installation; or

(4) The installation has been inspected and approved by the implementing agency; or

(5) All works listed in the manufacturer’s installation checklists has been completed; or

(6) The owner and operated have complied with another method for ensuring compliance with paragraph (f) of this section that is determined by the implementing agency to be no less protective of human health and environment.

History: Rule 3-01, eff 30 Aug 01.

24.711 Upgrading of existing UST systems.

(a) Alternatives allowed. Not later than December 22, 1998, all existing UST systems must comply with one of the following requirements:

(1) New UST system performance standards under 24.0710;

(2) Upgrading requirements in paragraphs (b) through (d) of this section; or

(3) Closure requirements under Subchapter H, including applicable requirements for corrective action under Subchapter F.

(b) Tank upgrading requirements. Steel tanks must be upgraded to meet one of the following requirements in accordance with a code of practice developed by a nationally recognized association or independent testing laboratory:

(1) Interior lining. A tank may be upgraded by internal lining if:

(i) The lining is installed in accordance with the requirements of 24.0723, and

(ii) Within 10 years after lining, and every 5 years thereafter, the lined tank is internally inspected and found to be structurally sound with the lining still performing in accordance with original design specifications.

(2) Cathodic protection. A tank may be upgraded by cathodic protection if the cathodic system meets the requirements of 24.0710(a)(2)(ii),(iii), and (iv) and the integrity of the tank is ensured using one of the following methods:

(i) The tank is internally inspected and assessed to ensure that the tank is structurally sound free of corrosion holes prior to installing the cathodic protection system; or

(ii) The tank has been installed for less than 10 years and is monitored monthly for release in accordance with 24.0742 (4) through (8); or

(iii) The tanks has been installed for less than 10 years and is assessed for corrosion holes by conducting two (2) tightness tests that meet the requirements of 24.0742 (3) and six (6) months following the first operation of the cathodic protection system; or

(iv) The tank is assessed for corrosion holes by a method that is determined by the implementing agency to prevent releases in a manner that is no less protective of human health and environment than paragraphs (b)(2)(i) through (iii) of this section.

(3) Internal lining combined with cathodic protection. A tank may be upgraded by both internal lining and cathodic protection if:

(i) The lining is installed in accordance with the requirements of 24.0723; and

(ii) The cathodic protection system meets the requirements of 24.0710(a)(2)(ii),(iii),and (iv).

Note: The following codes and standards may be used to comply with this section :

(A) American Petroleum Institute Publication 1631,”Recommended Practice for the Interior Lining of Existing Steel Underground Storage Tanks”;

(B) National Leak Prevention Association Standard 631, “spill Prevention, Minimum 10 Years Life Extension of Existing Steel Underground tanks by Lining Without the Addition of Cathodic Protection”;

(C) National Association of Corrosion Engineers Standard RP-02-85, “Control of External Corrosion On Metallic Buried, or Submerged Liquid Storage Systems”: and

(D) American Petroleum Institute Publication 1632, “Cathodic Protection of Underground Petroleum Storage Tanks and Piping Systems;”

(c) Piping upgrading requirements. Metal piping that routinely contains regulated substances and is in contract with the ground must be cathodically protected in accordance with a code of practice developed by a nationally recognize association or independent testing laboratory and must meet the requirements of 24.0710(b)(2)(ii) and (iv)

Note: The codes and standards listed in note following 24.0710(b)(2) may be used to comply with this requirement.

(d) Spill and overfill prevention equipment. To prevent spilling and overfilling associated with product transfer to the UST system, all existing UST systems must comply with new UST system spill and overfill prevention equipment requirements specified in 24.0710(c).

(e) An emergency shutoff method described in 24.0710(e) of this subchapter.

History: Rule 3-01, eff 30 Aug 01.