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04/12/93 16:47 V916 372 0911 FILLNER CONSTRUC 191007 <br /> California State Water Resources control Board (February 6, 1992) <br /> O/C Tasks Corporation <br /> O/C TAIM Hydrostatic precision T&UR for DVT-TY4o II Tanks <br /> (continued) <br /> UST 'TIGHTNESS TEST METHOD <br /> other r.+mitatione: volume of trapped vapor not to exceed 20 <br /> gallons; <br /> the change in barometric pressure must be less <br /> than 0.04 paia over the 4-hazer test period; <br /> the annular $pace is at least 100% full with <br /> either water or antifreeze; <br /> if the ground water is above the bottom of the <br /> tank, and no product is being dispensed during <br /> a test, the total change in ground water <br /> elevation during a test must be Yeas than 1.5 <br /> inches per hour; <br /> if the ground water is below the bottom of the <br /> tank or not changing during a test, the total <br /> change in product level during a test must be <br /> less than 0.75 inches par hour. 4 / <br /> O/C Tanks Corporation <br /> Evaluator: vista Research <br /> riberglass Tower <br /> Toledo, ON 43699 State Review Completed: 01-07-42 <br /> Telt (419) 248-5475 <br /> 64 <br />