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V <br /> 3.0 RE-EXCAVATION WORK PLAN <br /> The observations at the time of removal indicated the <br /> probable sources of product to be: 1. Overspill from filling <br /> the tanks and 2. apparent leakage of plumbing from the tank <br /> to the suction pumps. It was difficult to tell which source <br /> was prominent due to their close proximity; however, the <br /> source appeared to be located above the tank. There were no <br /> holes found in the tanks at the time of removal. <br /> In reviewing the data obtained from the samples taken from <br /> t. beneath the tank the contamination stopped at tank j#4 to the <br /> south approximately 20' from the highest concentrations. The <br /> west sample from tank 01 was also non-detected and <br /> approximately 20' from the point of release. Due to these <br /> results indicating moderate lateral migration and the heavy <br /> native soil we feel the site is a good candidate for re- <br /> excavation. <br /> b <br /> The following sequence of work is intended to mitigate <br /> gasoline and diesel contaminated soils discovered in the <br /> ►N►ov%QC'j <br /> process of remaining the underground storage tanks, fuel pump <br /> island and associated piping. All activities will be <br /> overseen and a final report submitted by Wallace Kuhl and <br /> Associates located at 3050 Industrial Blvd, West Sacramento <br /> 95691, phone (916) 372-1434. Additionally work shall be co- <br /> ordinated with Public Health Services-Environmental Health <br /> Department (there will be a minimum 48 hour notice prior to <br /> commencement) : <br />