Section Env-Or 405.01 - Tank Standards for UST Systems(a) Each tank in a UST system shall meet the requirements of 40 CFR 280.20(a)(1), (2), (3), or (5), reprinted in Appendix E.(b) Each UST at a new facility shall have secondary containment that encloses 360 degrees of the tank that is designed to come into contact with the regulated substance to be contained in the tank.(c) The secondary containment wall or envelope required by (b), above, shall not be in contact with the inner wall such that a leak of the inner tank would not be detected by the leak monitoring system.(d) No alterations of any kind shall be made to the tank without the tank manufacturer's written approval and a waiver obtained pursuant to Env-Or 409.(e) Each UST shall have a wear plate under each tank opening to protect the tank bottom from abrasion or puncture that:(1) Is constructed of steel or glass-fiber-reinforced plastic; and(2) Covers an area of at least 144 square inches, centered under the opening.(f) Subject to (g), below, each UST shall bear a permanent label such as a stencil or engraved plate that provides the following information: (1) The standard of design by which the tank was manufactured;(2) The year in which the tank was manufactured;(3) The dimensions and capacity of the tank; and(4) The name of the manufacturer.(g) The owner shall maintain a certificate at the facility that: (1) Shows all of the information required by (f), above, the date of installation, and the regulated substances and percentages by volume of any additives that might be stored permanently and compatibly within; and(2) Is permanently affixed in such a way as to be visible to a department inspector during a routine inspection.(h) No tank shall be used to store a regulated substance unless the manufacturer of each component of the UST system that will be in contact with the stored substance, including but not limited to the interior lining or wall of the tank and all gaskets and sealants, has listed the regulated substance as being compatible with the component.(i) The owner shall not change the regulated substance being stored in a UST system to a regulated substance that is not listed by each manufacturer as a substance that is compatible with the UST system components, unless the owner obtains a written confirmation from each manufacturer that certifies the compatibility of the liquid with the system prior to implementing the change.(j) All UST systems shall be equipped with a submerged fill tube installed with a clearance of at least 4 but less than 6 inches between the bottom of the tank and the point at which the regulated substance can first exit the submerged fill tube.N.H. Admin. Code § Env-Or 405.01
(See Revision Note at chapter heading for Env-Or 400) #10393, eff 9-1-13
Amended by Volume XXXVIII Number 45, Filed November 8, 2018, Proposed by #12643, Effective 10/10/2018, Expires 10/10/2028.