SECTION 165:25-2-36. Tank system installation

(a)   Backfill material. Backfill material used below, around, and/or above a new underground storage tank system installation must be clean, unused, non-corrosive porous material such as sand, crushed rock or pea gravel specified by the tank manufacturer. The Licensed UST Installer must be present and continuously supervise backfilling operations to ensure that proper procedures are followed.

(b)   UST installation.

(1)   Owners/operators of all underground storage tank systems must notify PSTD at least forty-eight (48) hours prior to the installation of underground storage tanks and/or lines by submitting the PSTD scheduling form and receiving confirmation of the installation and the Temporary Authorization for Receipt of Fuel from PSTD. Following the required forty-eight (48) hour notification of new UST installations, an on-site inspection may be required at critical junctures. The PSTD Fuel Specialist monitoring the installation must be contacted prior to initiating the following so it may be observed or inspected:

(A)   The air/soap test of tanks.

(B)   The tank pit prior to the placement of tank(s).

(C)   The backfilling of the lower quadrant of tank(s).

(D)   The air/soap test, layout of piping, and hydrostatic testing of sumps prior to backfilling.

(E)   The tightness test of tanks and piping, and leak detector tests prior to startup.

(F)   Backfilling of all piping.

(2)   Precautions must be taken to prevent damage to the tank or piping coating during installation. Any damage to the coating must be repaired in accordance with the manufacturer's instructions prior to the completion of the installation.

(3)   Piping must be arranged to minimize crossed lines and interference with conduits and other tank system components. If crossing is unavoidable, factory specifications must be provided to prevent contact between piping segments.

(4)   Underground piping must have a minimum slope of one-eighth inch (1/8") per foot toward the tank and must be buried below ground a minimum of eighteen inches (18").

(5)   If a tank is installed in an area subject to a high water table or flooding, anchoring must be used to prevent tank flotation. Anchoring straps and associated equipment must be installed in a manner that will prevent damage to the tank and/or its coating.

(6)   The tank pit must contain a smooth, evenly graded bed of manufacturer approved material extending the full length of the tank bottom.

(7)   The Licensed UST Installer must follow PEI RP-100 recommended practice for ballasting to prevent tank flotation during installation.

(8)   Licensed UST Installers must be certified by the tank and line manufacturer, if applicable, and must be on site during all installation activities, including preparation for and placement of concrete over any part of the tank system.

(9)   Photos of installation and other required documentation must be submitted with the PSTD registration form within thirty (30) days and tank fees must be paid before a permit will be issued.

[Source: Added at 21 Ok Reg 2036, eff 7-1-04; Amended at 22 Ok Reg 1730, eff 7-1-05; Amended at 25 Ok Reg 1867, eff 7-1-08; Amended at 26 Ok Reg 1826, eff 7-1-09; Amended at 32 Ok Reg 780, eff 8-27-15; Amended at 34 Ok Reg 935, eff 9-11-17; Amended at 35 Ok Reg 985, eff 10-1-18]