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California State Water Resources Control Board (February 6 , 1992) <br /> Horner Creative Products <br /> Horner Ezy-Chek I (Overfilled Test) <br /> UST TIGHTNESS TEST METHOD <br /> Threshold: 0 . 05 gallon per hour (Pp=99 0 ; PFA=1 0) <br /> Applicability: gasoline, diesel, aviation fuel, fuel oil n4 , or <br /> others ; <br /> Capacity: the maximum UST capacity shall be 12 , 000 gallons ; <br /> the UST must be 100 percent full ; <br /> Waiting Time: minimum waiting time between delivery and test data <br /> collection shall be six (6) hours ; minimum waiting <br /> time between "topping off" and test data collection <br /> shall be three (3) hours; <br /> Test Period: minimum data collection time shall be one and half <br /> (1. 5) hours (30 minute monitor period, 60 minute <br /> test period) ; data collection must continue until <br /> data meets manufacturer' s stop test criteria ; test <br /> data shall be acquired and recorded by a strip <br /> chart recorder; leak rate calculated from data of <br /> last one (1) hour of the test period ; <br /> Ground water: ground water depth must be determined, and if the <br /> water table is above the bottom of the UST, the <br /> test procedure compensating for its presence must <br /> be used. Ground water level must be stable prior <br /> to and during the test; <br /> Calibration: level sensors must be calibrated before each test; <br /> Temperature sensor must be calibrated annually. <br /> . F� Horner Creative Products Evaluator: W. A. Kibbe & Associates <br /> 212 Morton Street <br /> Bay City, MI 4870 <br /> Tel : (517) 893-3360 State Review Completed: 11-21-90 <br /> 23 <br />