Can I use my ATG or SIR to perform tank tightness testing that is required under the Louisiana Alternative Assessment Procedure?
An automatic tank gauge (ATG) or statistical inventory reconciliation (SIR) can be used for the annual tank tightness testing requirement of the Louisiana Alternative Assessment Procedure as long as the annual ATG or SIR test meets a 0.1gph leak rate with a probability of detection of at least 95% and a probability of false alarm of less than 5%, and the manufacturers’ instructions and/or third party certification are followed for the tests. The tank tightness testing required before installation of the impressed current system and 3 to 6 months after installation of the impressed current system must be conducted using a precision volumetric or non-volumetric tank tightness test method (not ATG or SIR ) that follows the manufacturers’ instructions and/or third party certification. All tank tightness testing methods (precision tank tightness test, ATG, or SIR) must be capable of detecting a 0.1 gallon per hour leak rate from any portion of the tank that routinely contains product. For e