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03 <br /> Corrective Action Plan �OT AFFP-OVEI) <br /> ggiman Property <br /> 1112 East Harding Way, Stockton, California <br /> ATC Project No. 54.22493.0001 <br /> :5 'C-fV . 3 1-3/-0 <br /> 1.0 INTRODUCTION <br /> ATC Associates Inc. (ATC)has prepared this Corrective Action Plan on behalf of Eggiman Trust <br /> for the San Joaquin County Environmental Health Department (SJCEHD) to summarize findings A <br /> of the subsurface investigation performed at the above referenced site ,(Figure 1) and to <br /> recommend corrective actions for hydrocarbon-impacted soil and groundwater. , <br /> The purpose of the subsurface investigation was to define the lateral and vertical extent of <br /> petroleum hydrocarbon-impacted soil and,groundwater in the vicinity of the abandoned gasoline <br /> underground storage tanks (USTs). The findings of the subsurface investigative study are <br /> summarized in the following paragraphs. <br /> Based on subsurface investigations completed to date, as summarized below, several remedial <br /> actions are considered. The recommended remedial is described.in detail. <br /> . j <br /> 1.1 Site Location <br /> The site is located on the south side of East Harding Way and on the east side of North Union <br /> Street in the City of Stockton, California (Figure 1). The site location is-a commercial and <br /> residential area, currently occupied by Robert Eggiman. It is currently being used as a.hydraulic <br /> garage and repair shop. <br /> 11.2 Background <br /> In April. 1987, SEMCO removed and disposed of two 1,000-gallon regular gasoline underground <br /> storage tanks (USTs), associated piping, and fuel dispensers from the locations shown on Figure s <br /> 2. A soil sample was collected from beneath the end of each tank at.approximately 17 feet below <br /> ground surface (bgs). Analytical testing indicated the collected samples contained detectable <br /> concentrations of petroleum hydrocarbon constituents. The excavation was subsequently <br /> backfilled to the ground surface. <br /> On July 24, 1997, six soil borings were advanced to depths ranging from approximately 16 to 31 <br /> II <br /> feet bgs to investigate the extent of residual soil contamination at the site. Detectable <br /> concentrations of total petroleum hydrocarbons as gasoline (TPHg), total petroleum <br /> hydrocarbons as diesel (TPHd), and benzene, toluene, ethylbenzene, and xylenes (BTEX) were <br /> S:U24931reports\CAP.doc ] <br />