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17. Is there a special test to check the pipeline for trapped vapor? <br /> ( )yes (X)no* <br /> *System is designed to eliminate trap2ed vapor. <br /> 18. Can a test be performed with trapped vapor in the pipeline? <br /> (X)yes ( ) no <br /> 19. If trapped vapor is found in the pipeline, is it removed before a test is performed? <br /> ( )yes (X)no <br /> 20. Are deviations from this protocol acceptable? <br /> ( )yes (X) no <br /> If yes,briefly specify: <br /> 21. Are elements of the test procedure determined by on-site personnel? <br /> ( )yes (X) no <br /> If yes,which ones?(Check all applicable responses.) <br /> ( )waiting period between filling the tank and the beginning of data collection for the test <br /> ( ) length of test <br /> ( ) determination of the presence of vapor pockets <br /> ( ) determination of"outlier" (or anomalous) data that may be discarded <br /> ( ) other(Describe briefly.) <br /> Data Acquisition <br /> 22. How are the test data acquired and recorded? <br /> ( )manually <br /> ( )by strip chart <br /> ( )by computer <br /> (X) by microprocessor <br /> 23. Certain calculations are necessary to reduce and analyze the data. How are these calculations <br /> done? <br /> ( )manual calculations by the operator on site <br /> ( ) interactive computer program used by the operator <br /> ( ) automatically done with a computer program <br /> (X) automatically done with a microprocessor <br /> Description-Pipeline Leak Detection System Page 4 of 5 <br />