COMPLIANCE INFO_1993-1998 - Laserfiche WebLink

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Re ts ofStandard Ev ation Autom4aic Tank Gauging System (ATGJ This form tells whether the automatic tank gauging system (ATGS) described below complies with the performance requirements of the federal underground storage tank regulation. The evaluation was conducted by the equipment manufacturer or a consultant to the consultant to the manufacturer according to the U.S. EPA's "Standard Test Procedure for Evaluating Leak Detection Methods: Automatic Tank Gauging Systems." The full evaluation report also includes a form describing the method and a form summarizing the test data. Tank owners using this leak detection system should keep this form on file to prove compliance with the federal regulations. Tank owners should check with State and local agencies to make sure this form satisfies their requirements. ATGS Description Name -QEl 3000 Tank Level Module (0.1 gl2h; Ragid Test Mode) Version Number TLP2 Vendor _control Engineers, Inc. 107 Menard Road (street address) Houma LA 70361 (504) 872-4541 (city) (state) (zip) (phone) Evaluation Results This ATGS, which declares a tank to be leaking when the measured leak rate exceeds the threshold of --0.05 gallon per hour, has a probability of false alarms [P(FA)l of 5 %. The corresponding probability of detection [P(D)l of a 0.1 gallon per hour leak is 95 %. The minimum water level (threshold) in the tank that the ATGS can detect is 0.49 inches. The minimum change in water level that can be detected by the ATGS is 0.05 inches (provided that the water level is above the threshold). Therefore, this ATGS 0 does ❑ does not meet the federal performance standards established by the U.S. Environmental Protectian Agency—(O. 10 gallon per hour at P(D) of 95% and P(FA) of 5%), and this ATGS does tJ does not meet the federal performance standard of measuring water in the bottom of the tank to the nearest 1/8 inch. Test Conditions During Evaluation The evaluation testing was conducted in a. 10,000 gallon 0 steel ❑ fiberglass tank that was 96 inches in diameter and 324 inches long. the temperature difference between product added to fill the tank and product already in the tank ranged from -6.4 F to 7.4 *IF, with a standard deviation of 4.3 F. The tests were conducted with the tank product levels 50 and 95 % full. The product used in the evaluation was No. 2, Diesel . ATGS - Results Forms Page 1 of 2