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INTRODUCTION <br />This report summarizes the field activities performed at the <br />former Exxon Station located ,at 601 East Kettleman Lane, <br />Lodi, California (Figure 1) during the removal of a 500 <br />gallon used oil tank and product piping with dispensers. The <br />double wall fiberglass Underground Storage Tanks (USTs) for <br />gasoline and diesel products were left in place to be <br />reused. Station replacement, excavation and removal <br />activities were performed by Wendt & Sons Construction of <br />Stockton, California. Transportion and disposal of the used <br />oil tank and piping was performed by Ecology Control <br />Industries (formerly Erickson, Inc.) of Richmond, <br />California. A Touchstone Developments (Touchstone) <br />representative was present on-site to observe the used oil <br />UST and product piping excavations and to obtain soil <br />samples from the excavations and associated stockpiles. The <br />soil sampling described in this report was performed April <br />23, 1998 to comply with current State of California Regional <br />Water Quality Control Board and San Joaquin County <br />guidelines. <br />SITE DESCRIPTION <br />The former station building and product dispenser islands <br />has been demolished and a new station is currently being <br />built. The site is adjacent to commercial businesses. <br />FIELD EXCAVATION ACTIVITIES <br />During the upgrading of the station, the gasoline and diesel <br />product piping was detached fromtheexisting fiberglass <br />USTs. The fuel USTs remained and the double walled <br />fiberglass piping was removed to be replaced for the new <br />station configuration. The 500 gallon double walled <br />fiberglass used oil tank was also removed. Removal and <br />sampling occurred April 23, 1998 and was witnessed by <br />Michael Kith, a representative with San Joaquin County <br />Public Health Services, Environmental Health Division. <br />SOIL SAMPLING <br />Soil samples were collected under the direction of Michael <br />Kith from the backhoe bucket by removing the top few inches <br />of soil and pushing a clean three -inch -long brass tube (2 <br />inches in diameter) into the soil until completely full. <br />The ends of each tube were covered with aluminum foil and <br />sealed with plastic end caps. The sample was then labeled, <br />placed in a cooler with ice, entered on a Chain -of -Custody <br />form and transported to Analytical Sciences, a State - <br />certified analytical laboratory located in Petaluma, <br />California. <br />Page 1 <br />