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Tracer Research Corporation <br /> Nonvolumetric Tff Method Tracer Tight (TM) _ <br /> Version <br /> > Safety Disclaimer. This test procedure only addresses the issue of the method's ability <br /> to detect leaks. It does not test the equipment for safety hazards. <br /> Additional Evaluation Results (if applicable) <br /> This method, which declares a tank to be leaking when <br /> false alarms fP FA�of has an estimated probability of <br /> �I % ased on t e test results of false alarms out <br /> of tests. ote: perfect score during testing does not mean that the method is perfect. <br /> Based on the observed results, a 95% confidence interval for P(FA) is from 0 to <br /> The corresponding probability of detection [P(D)] of a gallon per hour leak is <br /> % based on the test results of detections out of simulated leak <br /> tests. Note: A perfect score during testing does not mean that the method is perfect. Based <br /> on the observed results, a 95% confidence interval for P(D) is from 0 to %. <br /> > Water detection mode (if applicable) <br /> ! Using a false alarm rate of 5%, the minimum water level that the water sensor can detect <br /> with a 95% probability of detection is N/A inches. <br /> Using a false alarm rate of 5%, the minimum chane in water level that the water sensor can <br /> detect with a 95% probability of detection is NIA inches. <br /> i <br /> Based on the minimum water level and change in water level that the water sensor can <br /> detect with a false alarm rate of 5% and a 95%probability of detection, the minimum time <br /> for the system to detect an increase in water level at an incursion rate of 0.10 gallon per <br /> hour is N/A minutes in a N A - gallon tank. <br /> Certification of Results <br /> I certify that the nonvolumetric tank titness testing method was installed and operated <br /> according to the vendor's instruction. also certify that the evaluation was performed <br /> according to the standard EPA test procedure to nonvolumetric tank tightness testing <br /> methods and that the results presented above are those obtained during the evaluation. <br /> H Kendall Wilcox Ken Wilcox Associates <br /> (pnnted name) (organvehon perfonnmg evalua�on) <br /> (atgnatwe) <br /> BlueSorine <br /> (aty,state,vp) s Missouri 64015 <br /> October 4 1990 18161 229-0860 <br /> (datc) (phone number) <br /> NO"ObObdrk nT IM! -aeons Yan♦ <br /> r*e3sf3 <br />