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Results of U.S. EPA Standard Eva uation <br />Automatic Tank Gauging System(ATGS) <br />This form tells whether the automatic tank gauging system (ATGS) described below <br />complies with the performance requirements of the federal underground storage tank <br />regulation. The evaluation was conducted by theequipment manufacturer or a consultant <br />to the consultant to the manufacturer according to the U.S. EPA's "Standard Test <br />Procedure for Evaluating Leak Detection Methods: Automatic Tank Gauging Systems." <br />The full evaluation report also includes a form describing the method and a form <br />summarizing the test data. <br />Tank owners using this leak detection system should keep this form on file to prove <br />compliance with the federal regulations. Tank owners should check with State and local <br />agencies to make sure this form satisfies their requirements. <br />ATGS Description <br />Name CEi 3000 Tank Level Module (0 2 gh• Rapid Test Mode) <br />Version Number TLP2 ` <br />Vendor Control Engineers Inc <br />107 Menard Road <br />(street address) <br />Houma LA 70361 (504) 872-4541 <br />'! (city) (state) (zip) (phone) <br />Evaluation Results <br />This ATGS, which declares a tank to be leaking when the measured leak rate exceeds the <br />threshold of 0.10 gallon per hour, has a probability of false alarms [P(FA)l of --5—%. <br />The corresponding probability of detection [P(D)l of a 0.2 gallon per hour leak is 95 <br />The minimum water level (threshold) in the tank that the ATGS can detect is 0.49 <br />inches. <br />The minimum change in water level that can be detected by the ATGS is 0.05 inches <br />(provided that the water level is above the threshold). <br />Therefore, this ATGS ® does ® does not meet the federal performance standards <br />established by the U.S. Environmental Protech Agenc(0.20 gallon per hour at P(D) <br />of 95% and P(FA) of 5%), and this ATGS does b does not meet the federal <br />performance standard of measuring water in the bottom of the tank to the nearest 1/8 <br />inch. <br />Test Conditions During Evaluation <br />The evaluation testing was conducted in a 10.000 gallon 0 steel 13 fiberglass tank that <br />was _flinches in diameter and 324 inches long. <br />the temperature difference between product added to fill the tank and product already in <br />the tank ranged from -6.4 °F to 7.4 °F, with a standard deviation of 4.3 F. <br />The tests were conducted with the tank product levels �Q_ and 25% full. <br />The product used in the evaluation was No. 2, Diesel <br />ATGS - Results Forms Page 1 of 2 <br />