- (a) Restrictions. Manual tank gauging may be used as an approved method of release detection if the tank has a nominal capacity of 1,000 gallons or less.
(b) Requirements.
- (1) Tank liquid level measurements are taken at the beginning and ending of the period appearing in Appendix Q, during which no liquid is added to or removed from the tank.
- (2) Level measurements are based on an average of two (2) consecutive stick readings at both the beginning and ending of the period.
- (3) The equipment used is capable of measuring the product over the full range of the tank's height to the nearest one-eighth inch (1/8").
- (4) A leak is suspected and subject to the release reporting requirements of Subchapter 3, Part 3 of this Chapter if the variation between beginning and ending measurements exceeds the weekly or thirty (30) day standards in the table in Appendix Q.
Amended and renumbered from 165:25-3-5.7 at 23 Ok Reg 2261, eff 7-1-06
Amended at 25 Ok Reg 1867, eff 7-1-08
Amended at 35 Ok Reg 985, eff 10-1-18
Amended at 36 Ok Reg 551, eff 8-1-19