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AY 12 ' 97 12 : 16 FROM VEEDER-ROOT SERVICE TO 915104205896 PAGE .005i008 Results of U.S. EPA Standard Evaluation Volumetric Tank Tightness Testing This form tells whether the tank tightness testing method 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: Volumetric Tank Tightness Testing Methods." 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. Method Description Name TLS 200/200i/3Q0/400 Monitoring Systems ' Version 8473 Digital Sensing Pr6be J,Magnetostrictive) Vendor Veeder-Root 125 Powder Forest Drive P.O. Box 2003 (street address) Simsbury CT 06070-2003 (203) 651-2700 (city) (state) (zip) (phone) Evaluation Results This method, which declares a tank to be leaking when the measured leak rate exceeds the threshold of Q.QQ9 gallon per hour, has a probability of false alarms [P(FA)l of 1 .0%. The corresponding probability of detection [P(D)) of a 0.1 gallon per hour leak is 99%. Therefore, this method ' does ® does not meet the federal performance standards established by the U.S. Environmental Protection Agency (0.10 gallon per hour at P(D) of 95% and P(FA) of 5%). Test Conditions During Evaluation The evaluation testing was conducted in a 10000 gallon IM steel ❑ fiberglass tank that was 96 inches in diameter and 24 inches long. The tests were conducted with the tank 95 percent full. The temperature difference between product added to fill the tank and product already in the tank ranged from -11 .32_'F to 7.07 °F, with a standard deviation of 5.71 OF. The product used in the evaluation was Diesel . M ' The Manufacturer has provided an affidavit stating that the current model numbers use the same hardware and software as the previously tested system (MRI Project No. 9740.)