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LO INTRODUCTION <br /> 1.1 Scope of Work <br /> ' This report of corrective action documents the soil remediation activities at Doane <br /> Products Company (DPC) facility at 450 E Grantline Road in Tracy, Cahfon ua located <br /> as located on Figure 1 Soil remediation was performed as described in a Workplan <br /> for Remedial Excavation submitted to the San Joaquin County Public Health <br /> ' Services (SJCPHS) and dated October 24, 1991 <br /> This site was a former underground storage tank (UST) site which maintained two <br /> (2) UST's containing diesel and one (1) UST containing gasoline. The scope of the <br /> remediation addressing the soil contamination around the two diesel USTs was the <br /> following: <br /> ' Excavation of 1100 yards of contaminated backfill soils and <br /> adjacent soils to a depth of 12-14 feet from the area of the <br /> ' former USTs containing diesel, <br /> Collection and analysis of 21 soil samples for confirmation <br /> of extent of soil contamination; , <br /> Collection and analysis of one (1) water sample from <br /> groundwater that infiltrated into excavated pit, <br /> • Collection and analysis of two groundwater samples from monitoring <br /> well MW-1 in a verified down gradient direction and P-2,to the west of <br /> the UST location, <br /> • Abandonment /destruction of one piezometer <br /> No detectable concentrations of Total Petroleum Hydrocarbons (TPH) were found at <br /> the location of the gasoline UST during the UST removal or during the subsequent <br /> preliminary investigation as described in Section 1.2 and therefore, that location was <br /> ' not addressed during the remediation <br /> ' 1.2 Background/Site History <br /> ' 1.2.1 UST Removal <br /> On January 16, 1990, the Jim Thorpe Oil Company removed the two 10,000 gallon <br /> diesel tanks and one 5,000 gallon gasoline tank from two separate excavations from <br /> tthe rear yard of the Tracy Facility of DPC as shown in Figure 2 Sampling at the time <br /> of tank removal indicated the presence of petroleum hydrocarbons in one soil <br /> sample at a concentration of 53,000 ppm, Total Petroleum Hydrocarbons (TPH) as <br /> tdiesel in one location in the diesel underground storage tank (UST) excavation and <br /> nondetectable hydrocarbon concentrations at all others. The soil sample with the <br /> elevated hydrocarbon concentrations was located in the southwest corner of the <br /> ' excavation of the diesel,USTs Analysis of seepwater in the excavation indicated <br /> 1 <br /> ' BRUNSING ASSOCIATES, INC. <br />