Laserfiche WebLink
April 7, 1992 <br /> ARCO Service Station No. 760, Lodi, California <br /> Authorization To Dispose of Stockpiled Soil <br /> At ARCO's request, soil piles 1, 5, and 6 and the drill cuttings were transported under the <br /> direction of Golden West to private land at the corner of Hibbard and Tokay Colony Road <br /> in Lodi, California. Soil piles 9, 10, and 11 were transported by Dillard Trucking of Byron, <br /> California, to the Brown and Fems Inc Class II in Livermore, California, on July 25, 1991 <br /> DISCUSSION <br /> t <br /> Soil samples collected during this investigation are shown on Plate 6 titled Residual <br /> Hydrocarbons Remaining in Soil Solid circleg represent samples in which laboratory <br /> analyses detected hydrocarbons above detection limits Tnan les represent samples in which <br /> residual hydrocarbons were not detected � tnang es epresent excavated samples and <br />` open triangles represent samples collected from soil borings from 5 to 21 feet below surface <br /> grade <br /> In the former gasoline tank cavity, residual TPHg remains in the soil at approximately 13 <br /> feet below grade at concentrations up to 250 ppm, BTEX concentrations were detected at <br /> concentrations of 5 4,7 0,3 2,and 18 ppm, respectively Hydrocarbons were not detected <br /> in soil samples collected from borings B-5 and B-9 west of the former gasoline tank cavity <br /> Sidewall samples north of the former gasoline cavity contained BTEX compounds at <br /> concentrations below 1 0 ppm, however, residual hydrocarbons were not detected in soil <br /> samples collected from boring B-4 also to the north of the former tank cavity <br /> Hydrocarbons were not detected in soil samples collected from boring B-6 west of the <br /> former cavity Hydrocarbons remain in soil at the south end of the former tank cavity <br /> 38048-5 16 <br /> i <br />