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- Y <br />r <br />./LP•Cc'fri�a� <br />, <br />r <br />IT CORPORATION <br />April 17, 1985 <br />Mr. J. Kelly Williamson <br />Kayo Oil Company <br />1121 East Main Street <br />Chattanooga, Tennessee 37408 <br />Dear Mr. Williamson: <br />SUBJECT: ASSESSMENT OF THE CONTAMINANT PLUME <br />Econo Self -Service Station <br />432:; East Washington Street <br />Stockton, California <br />Store No. 05748 <br />IT Project No. ME0004 <br />This report reformats the data presented in the March 14 and April 8, <br />1984 reports. The extent of contamination is presented on five foot <br />level maps and a crude worst case estimate of the amount of hydrocarbon <br />in the soils is made. Remedial alternatives that could be applied to <br />the site are presented with cost estimates and a recommended course of <br />action is outlined. <br />Figures 1 through 3 show the percent lower explosive 11mit values for <br />the soils samples at 5 -foot intervals from the surface to a depth of <br />30 feet. Figure 3 shows that the contamination does not extend to a <br />depth of 25 feet below ground surface. Figures 1 and 2 indicate that <br />the contamination is adjacent to the tanks, indicating that the source <br />of the hydrocarbons is probably the tanks, or spillage when the tanks <br />are filled. <br />The water table at the station is at a level below 30 feet, since we did <br />not. .encounter water in.any ..of the boreholes <br />Reamal Cilice <br />1 Corporation - 1815 Arnold Drive • Martinez. Calico: ria 94553.415-228-8400 <br />