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Tracer eweurch Corporacion <br /> � I <br /> i <br /> I <br /> Results of U.S. EPA Standard Evaluation <br /> Nonvolumetric Tank Tightness Testing Method <br /> This form tells whether the tank tightness testing method described below complies with the <br /> performance requirements of the federal underground storage tank regulation. The <br /> evaluation was conducted by the equipment manufacturer or a consultant to the <br /> manufacturer accordin to the U.S. EPA's Standard Test-Procedure for EvaluatingLeak <br /> Detection Methods: Nonvolumetric Tank Tightness Testing Methods." The full evaluation <br /> report also includes a form describing the method and a form 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 slue this form satisfies their requirements. <br /> Method Description <br /> Name: Tr c rR ear h Cor ri n <br /> Vendor: 1'r cer Research C or i n <br /> 3855 North Business Center Drive - <br /> (61mm adder) 6 2 88 9400 <br /> Tucson Arizona 85 nueo) <br /> (City) (Swm) (yP) <br /> Evaluation Results <br /> This method, which declares a tank to be leaking when a threshold amount of Tracer <br /> heroical is detected as va or in the soil utsid, Ihe tank has an estimated probability <br /> of tests. Aalarm <br /> -- .-- P d nce interval for P(FA) <br /> of p the <br /> from results <br /> .5 gofalse alarms out of 34 <br /> The corresponding probability of detection [P(D)] of a 0.005 ,gallon per hour leak is 97.1 <br /> % based on the test results of 33 detections out of 34 simulated leak tests. A 95% <br /> confidence interval for P(D) is from 2La to 100 %. <br /> Does If Yes,his meod use additional modes of leak complete additional evaluation results on page i3nof this formm. [X] No <br /> Based on the results above, and on page 3 if a plicableyy, this method [X] does [ ] does not <br /> ine <br /> Ag-et the federal ency (0.0 gallon perm our at P(D)of 95% and P(FA) of 5thhe %Environmental Protection <br /> Test Conditions During Evaluation <br /> The evaluation testing was conducted in a varvine size gallon [X steel [X] fiberglass tank <br /> that was inches in diameter and _ inches long, inst2ed in backfill. <br /> The ground-water level was varvine inches above the bottom of the tank. <br /> Hage 1 013 <br /> Nor.ol�drir T1T L1eliod-Yeaalhe Furir <br /> tir <br />