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Tracer Research Corporation <br /> INTRODUCTION <br /> Horizon Engineering and Tracer Research Corporation performed Tracer Tight@ leak <br /> testing of I underground storage tank at the USA Petroleum #65 site in Lodi, CA. The tank was <br /> inoculated with tracer on April 9, 1993. Samples were collected on April 23, 1993 with sample <br /> vacuums of 4-6 inches Hg. The following table shows the tank size, type of tracer in each tank, <br /> and the product through put factor in the first 72 hours after inoculation. <br /> TANK#_ SIZE(GAIJR�CER FACTOR <br /> Tank 1 12,000 D 1 <br /> '['he following table shows the type of product in the tank, the product level and the water <br /> level in each tank measured in inches at time of inoculation and sampling. <br /> AT INOCULATION AT SAMPLING <br /> TANK# PRODUCT H2O PRODUCT f2-6 PROII <br /> _ DC <br /> Tank 1 Super 0.00 66.00 0.00 75.00 <br /> i <br /> The depth to water in the tank pit was determined to be>20 feet below grade. The <br /> groundwater conditions were stable. <br /> I <br /> I <br /> - 1 - <br />