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09/27/1995 10:53 1-510-658-8448 SHIELDS HARPER CO PAGE 05 <br /> I <br /> Results of U.S. EPA Standard Evaluation <br /> Volumetric Tank Tightness Testing Method, <br /> This form tells whether the tank tighmew testing method described below complies witfh the <br /> performance requirements of the federal underground storage tank regulation.The evaluation was <br /> conducted by the equipment manufacturer or a consultant to the mamtfacntrcr according to the <br /> U.S.EPA's "Standard Test Procedure for Evaluating Leak Detection Methods:Volumetric Tank <br /> Tightness Testing Methods."The fall evaluation report also includes a form describing the method <br /> and a form summarizing the test data. <br /> Tank owners using this leak detection system should keep this form on file to Prove compliance <br /> with the federal regulations.Tank owners should check with State and local agencies to make sure <br /> this form satisfies their requirements. <br /> WFOd Description <br /> Name - i T monitoring Sys&ems <br /> Version- -A473 hi itai 94ans4n Probe (Mo netuatrittive) - <br /> Vendor ._ Veeder Root <br /> P 3 <br /> sn eet address) <br /> i <br /> Simsbury CT 06070-2003 (203) 651-27001 <br /> state 2jp one <br /> Evaluation Results <br /> This method, which declares a tank to be leaking when the measured leak rate exceeds the <br /> threshold of 0-069 gallon per hour, has a probability of false alarms (P(FA)j of 1,0 <br /> The corresponding probability of detection [P(D)j of a 0.10 gallon per hour leak is 99 %. <br /> Therefore, this method 0 does ❑does not meet the federal performance standards <br /> established by the U.S. Environmental Protection Agency (0.10 gallon per hour at P(Di) of 95% <br /> and P(FA) of 5%). <br /> Test Canditions During Evaluatton <br /> The evaluation testing was conducted in a 10,000 gallon steel ❑fiberglass tank <br /> that was 6 inches in diameter and 324 inches long. <br /> 1 <br /> The tests were conducted with the tank 95 percent full. <br /> The temperature difference between product added to ill the tank and product <br /> already in the tank ranged from -11.39 OF to 7.07 � <br /> with a standard deviation of 5.71 OF. <br /> : .. <br /> The product used in the evaluation was diesel ' <br /> i <br /> i <br /> Volumetric TTT Method - ResWtt Form Mga 1 of 2 <br />