Iowa Administrative Code › Agency 567 - Environmental Protection Commission › Title IX - Spills and Hazardous Conditions › Chapter 135 - Technical Standards and Corrective Action Requirements for Owners and Operators of Underground Storage Tanks › Rule 567-135.3 - Ust Systems-design, Construction, Installation and Notification

Current through Register Vol. 47, No. 3, July 24, 2024
(1)
Performance standards for new UST systems.
In order to prevent
				releases due to structural failure, corrosion, or spills and overfills for as
				long as the UST system is used to store regulated substances, all owners and
				operators of new UST systems must meet the following requirements. The UST
				system must be secondarily contained in accordance with subrule 135.3(9).
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 recognized association or independent
				testing laboratory as specified below:
(1)
				The tank is constructed of fiberglass-reinforced plastic; or
NOTE: The following codes of practice may be used to comply
				  with subparagraph 135.3(1)
"a"
(1) : Underwriters Laboratories
				  Standard 1316, "Glass-Fiber-Reinforced Plastic Underground Storage Tanks for
				  Petroleum Products, Alcohols, and Alcohol-Gasoline Mixtures" or Underwriters
				  Laboratories of Canada S615, "Standard for Reinforced Plastic Underground Tanks
				  for Flammable and Combustible Liquids."
(2) The tank is constructed of steel and
				cathodically protected in the following manner:
1. The tank is coated with a suitable
				dielectric material;
2.
				Field-installed cathodic protection systems are designed by a corrosion
				expert;
3. Impressed current
				systems are designed to allow determination of current operating status as
				required in paragraph 135.4(2)
"c."
This shall be accomplished
				by providing the rectifier with ampere and voltage meters that can be read by
				the owner and operator for comparison to the design standard set by the
				corrosion expert or a device that can warn the owner and operator when changes
				in ampere and voltage occur outside the design standard set by the corrosion
				expert;
4. Cathodic protection
				systems are operated and maintained in accordance with subrule 135.4(2) or
				according to guidelines established by the department; and
5. Impressed current systems must be designed
				not to cause stray current that can damage other underground structures (metal
				electrical conduits, water lines, gas lines, etc.); or
NOTE: The following codes of practice may be used to comply
				  with subparagraph 135.3(1)
"a"
(2):
* Steel Tank Institute "Specification STI-P3®
				  Specification and Manual for External Corrosion Protection of Underground Steel
				  Storage Tanks";
* Underwriters Laboratories Standard 1746, "External
				  Corrosion Protection Systems for Steel Underground Storage Tanks";
* Underwriters Laboratories of Canada S603, "Standard for
				  Steel Underground Tanks for Flammable and Combustible Liquids," and S603.1,
				  "Standard for External Corrosion Protection Systems for Steel Underground Tanks
				  for Flammable and Combustible Liquids," and S631, "Standard for Isolating
				  Bushings for Steel Underground Tanks Protected with External Corrosion
				  Protection Systems";
* Steel Tank Institute Standard F841, "Standard for Dual Wall
				  Underground Steel Storage Tanks"; or
* NACE International Standard Practice SP 0285, "External
				  Corrosion Control of Underground Storage Systems by Cathodic Protection," and
				  Underwriters Laboratories Standard 58, "Standard for Steel Underground Tanks
				  for Flammable and Combustible Liquids."
(3) The tank is constructed of steel and clad
				or jacketed with a noncorrodible material; or
NOTE: The following industry codes may be used to comply with
				  subparagraph 135.3(1)
"a"
(3):
* Underwriters Laboratories Standard 1746, "Corrosion
				  Protection Systems for Underground Storage Tanks";
* Steel Tank Institute ACT-100® Specification F894,
				  "Specification for External Corrosion Protection of FRP Underground Storage
				  Tanks";
* Steel Tank Institute ACT-100-U® Specification F961,
				  "Specification for External Corrosion Protection of Composite Steel Underground
				  Storage Tanks"; or
* Steel Tank Institute Specification F922, "Steel Tank
				  Institute Specification for Permatank®."
(4) The tank is constructed of metal without
				additional corrosion protection measures provided that:
1. 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
2. Owners and operators maintain records that
				demonstrate compliance with the requirements of paragraph
				135.3(1)
"a"
(4)"1" for the remaining life of the tank;
				or
(5) The tank
				construction and corrosion protection are determined by the department 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 subparagraphs 135.3(1)
"a"
(1) to
				(4).