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What threshold value f(tduct volume change (gallon per hour) is used to declare that <br />a tank is leaking? <br />(X ) 0.05 gallon per hour <br />O 0.10 gallon per hour <br />0.20 gallon per hour <br />other (list) <br />Under what conditions are test results considered inconclusive? <br />(X) too much variability in the data (standard deviation beyond a given value) <br />unexplained product volume increase <br />other (describe briefly) <br />Exceptions <br />Are there any conditions under which a test should not be conducted? <br />water in the excavation zone <br />large difference between ground temperature and delivered product temperature <br />extremely high or low ambient temperature <br />invalid for some products (specify) <br />(X ) other (describe briefly) none <br />What are acceptable deviations from the standard testing protocol? <br />O none <br />lengthen the duration of test <br />(X ) other (describe briefly) Repeat test until consistent results are obtained. <br />What elements of the test procedure are determined by personnel on-site? <br />product level when test is conducted <br />when to conduct test <br />waiting period between filling tank and beginning test <br />length of test <br />determination that tank deformation has subsided <br />determination of "outlier" data that may be discarded <br />other (describe briefly) <br />Kl=i. <br />ATGS - Description Page 6 of 6 <br />