Okla. Admin. Code § 165:25-3-6.21

Current through Vol. 42, No. 8, January 2, 2025

Section 165:25-3-6.21 - General release detection methods and devices

(a) Owners/operators of new and existing underground storage tank systems must use a release detection method, or a combination of release detection methods, that is:

(1) Capable of detecting a release of regulated substances from any portion of the underground storage tank system that routinely contains product.

(2) Designed, installed, calibrated, operated, and maintained in accordance with the manufacturer's instructions, including routine maintenance and service checks for operability or running conditions.

(3) Capable of meeting the performance requirements of this Chapter, with any performance claims and their manner of determination described in writing by the equipment manufacturer or installer.

(4) Sampled, tested, or checked for a release at least once every 30 days.

(5) If more than one (1) release detection method is present on a petroleum storage tank system, the owner and/or operator must notify PSTD in writing which method is designated as the primary method of release detection. In the event the owner and/or operator switches or utilizes another method of release detection as the primary method, the owner and/or operator must notify PSTD in writing within thirty (30) days of selecting a new primary release detection method.

(b) Owners/operators must keep all written manufacturer and installer performance specifications and the manner in which those specifications are determined.

(c) Interstitial monitoring must be used as the method of release detection for secondarily contained tanks and/or piping installed after July 1, 2008.

(d) Beginning October 13, 2018, the electronic and mechanical components of release detection equipment must be tested for proper operation in accordance with manufacturer's instructions or use a code of practice developed by a nationally recognized association or independent testing laboratory. A test of proper operation must be performed at least annually and, at a minimum, cover the following components and criteria as applicable to the facility:

(1) Automatic tank gauge and other controllers: test alarm, verify system configuration; test battery backup;

(2) Probes and sensors: inspect for residual buildup, ensure floats move freely, ensure shaft is not damaged, ensure cables are free of kinks and breaks, test alarm operability and communication with controller;

(3) Automatic line leak detector: test operation to meet criteria in 40 CFR § 280.44(a) by simulating a leak;

(4) Vacuum pumps and pressure gauges: ensure proper communication with sensors and controller; and

(5) Hand-held electronic sampling equipment associated with groundwater and vapor monitoring: ensure proper operation.

(e) Owners and operators must maintain records of the annual operation tests for three (3) years. At a minimum, records must list each component tested, indicate whether each component needed to have action taken and describe any action taken to correct the issue.

Okla. Admin. Code § 165:25-3-6.21

Amended and renumbered from 165:25-3-5.1 at 23 Ok Reg 2261, eff 7-1-06; Amended at 25 Ok Reg 1867, eff 7-1-08; Amended at 26 Ok Reg 1826, eff 7-1-09

Amended by Oklahoma Register, Volume 34, Issue 24, September 1, 2017, eff. 9/11/2017

Amended by Oklahoma Register, Volume 36, Issue 21, July 15, 2019, eff. 8/1/2019