Laserfiche WebLink
1 <br /> f <br /> //G�Or rsE*O�f�St�1f1S 4191-E Pov er Inn Road, Sacramento, CA 95826 ;9161 452-2901 <br /> 4" <br /> • FREMONT •COSTA MESA • SACRAMENTO • HOUSTON <br /> r� April 28, 1988 <br /> 042STROS <br /> AGS Tab 1To. 038012-1 <br /> k� Mr. Tim Ross <br /> UNOCAL corporation <br /> 2175 North California, Suite 650 <br /> Walnut Creek, California 94596 <br /> Subject: Executive Summary of Report No. 038012-1, Subsurface <br /> Environmental Investigation and Evaluation of Soil <br /> Contamination at former UNOCAL Service Station No. <br /> 2859, 1665 Pacific Avenue, Stockton, California. <br /> Mr. Ross: <br /> A geologist from our office was present at the above-referenced <br /> site to inspect the underground storage tanks and product <br /> delivery lines on their removal and to collect soil samples from <br /> beneath the tanks. It is our understanding, based on information <br /> provided by personnel of UNOCAL Corporation, that the two tanks <br /> present in the gasoline storage tank pit thO site were used to <br /> store unleaded and super unleaded gasolil:p product, and that both <br /> tanks had 10,00o-gallon capacities. In a661vion, one tank with a <br /> 550-gallon capacity that ha- been used to store waste oil was <br /> removed from the site. <br /> North Cal Construction of Stockton, California, conducted the <br /> tank removal operations. Mr. A. O'Neil of the Stockton Fire <br /> ° Department was present during tank removal operations. Soil <br /> samples taken at the site during tank removal operations <br /> contained levels of hydrocarbon contamination that exceed action <br /> levels specified by the San Joaquin Local Health District. Soil <br /> containing such elevated levels has now been largely removed from <br /> the area of the tanks by excavation. With the approval of the <br /> California Regional Water Quality Control Beard and the San <br /> Joaquin Local Health District, contaminated soil has been removed <br /> to North Cal Construction's yard in Stockton for aeration. <br /> Copies of all laboratory Records of Analyses are included in <br /> Appendix A of this report. <br /> !.J <br />