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t L� Underground Storage Tank Removal Report CARPENTER COMPANY 17100 South Harlan Road, Lathrop, California 1.0. INTRODUCTION At the request of Mr. Denny Bryant of Carpenter Company, Advanced GeoEnvironmental, Inc. (AGE)has prepared this underground storage tank (UST) removal report for 17100 South Harlan Road, Lathrop, California. This report summarizes field activities and analytical results of soil samples collected in conjunction with the removal of one diesel UST and associated piping at the site on 06 May 2003. The location of the site is illustrated on Figure 1: Structures and the former UST location are illustrated on Figure 2. Field work was performed in accordance with San Joaquin County Environmental Health Department(SJCEHD) guidelines for the removal of USTs. 2.0. PROCEDURES An application for the removal of the diesel UST was submitted to the SJCEHD and approved on 30 April 2003. A fire permit was granted by the Lathrop Manteca Fire District(LMFD) on 06 May 2003; the permit was issued on site at the time of removal. Permits are included in Appendix A. 2.1. UST REMOVAL On 05 May 2003, the diesel UST, product piping, and.remote fill piping were excavated by a representative of Valued Engineering under the supervision of AGE. On 06 May 2003 the UST and the connecting piping were triple rinsed,and the riraseate pumped from the UST by American Valley Waste Oil.Approximately 350 gallons ofrinseate was hauled to Riverbank Oil Transfer 5300 Claus Road, Riverbank, California for disposal. The hazardous waste manifest (#22700843) is included in Appendix C. Prior to removal, approximately 300 pounds of dry ice was added to the UST, and the percent oxygen and lower explosive limit (LEL) were measured and verified that the values met fire code standards by the LMFD onsite inspector. After removal, the tank was visually inspected and subsequently transported to West Coast Equipment Company of Turlock, California for recycling. 2.2. SOIL AND GROUNDWATER SAMPLE COLLECTION AND ANALYSIS Six soil samples were collected on 06 May 2003 by AGE. Two soil samples were collected from each end of the UST excavation at a depth of approximately 2 feet below tank pit fill material(TP- East and TP-West); one sample was collected from beneath the dispenser area (DSP-1); and three Advanced GeoEnviron mental,Inc.