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AU 0 U 6 1992 <br /> ENVIRONMENTAL HEALTH <br /> PERMIT/SERVICES <br /> Imcon <br /> ASSOCIATES <br /> Consultants in Waste <br /> ManAugust 4 1992 <br /> Management and <br /> Environmental Control Project F90-02.02 <br /> Ms. Linda Turkatte <br /> Environmental Health Division <br /> San Joaquin County <br /> 445 N. San Joaquin Street <br /> Stockton, California 95201 <br /> Re: Analytical Results for Soil Samples Collected During the Removal of <br /> a 1 ,000-gallon Underground Storage Tank at 103 North E Street, <br /> Stockton, California <br /> Dear Ms. Turkatte: <br /> The purpose of this letter is to discuss the analytical results and hopefully <br /> resolve the issue of additional soil sampling at the former location of a <br /> 1 ,000-gallon underground storage tank. This tank was removed from the <br /> A. Teichert & Sons, Inc. (Teichert) facility located at 103 North E Street, <br /> Stockton, California, in the spring of 1991. Based on the reported detec- <br /> tion of toluene in two soil samples from the base of the tank excavation <br /> when the tank was removed, you have expressed concern regarding the <br /> possibility of additional soil impact at depth. <br /> Table 1 presents the analytical data for the two soil samples collected <br /> when the tank was excavated and removed. The certified analytical <br /> reports are attached. Two analyses were performed on the soil samples. <br /> The first analysis was for benzene, toluene, ethylbenzene, xylenes, and <br /> total petroleum hydrocarbons as gasoline consistent with analytical proce- <br /> dures documented in the Leaking Underground Fuel Tanks Manual. <br /> Based on the reported presence of toluene, Teichert requested that the <br /> soil samples be analyzed by U.S. Environmental Protection Agency (EPA) <br /> Method 8260 to confirm the presence of the toluene detected in the first <br /> round of analytical testing. <br /> p#V90V900202 <br /> 1433 N. Market Boulevard, Sacramento, California 95834, (916) 928-3300 <br />