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• Tracer Research Corporation <br /> LV <br /> Nonvolumetric TTT 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 /> has an estimated probability of <br /> false alarms f P FAR o o based on a test results of false alarms out <br /> of_ tests. Note: 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 /> c/o. , <br /> The correspondingprobability of detection [P(D)] of a gallon per hour leak is <br /> % based on the test results of detections out or 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 NAA inches. <br /> Based on the nunimum 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 tightness testing method was installed and operated <br /> according to the vendor's instruction. I 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 /> (printed name) IF <br /> performing evaluation) <br /> I. <br /> � . <br /> RInP pLO) s Missouri 64015 <br /> (signamm) (city,tract.>,p) <br /> October 4. 1990 (516) 229-0860 - <br /> (date) (phone number) <br /> Newoh se&k TIT Me*"-YenW Pa lap 3 d 3 <br />