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� i <br /> 1 . 2 SITE HISTORY <br /> an <br /> When the underground storage tanks at the site were removed, soil <br /> samples were taken from the excavations for the three fuel tanks <br /> and the waste oil tank (BTS 1987 ) . The site was investigated in <br /> March 1987 by Groundwater Technology, Inc. (GTI 1987 ) , who <br /> installed three monitoring wells (MW1 -MW3, Figure 2 ) around the <br /> location of the former tank field. The boreholes were drilled, <br /> - and soil samples were taken, on 18 March; groundwater from the <br /> we .ls was sampled initially on 19 March. In August 1987 , EA <br /> sampled the water in nearby water supply wells for analysis and <br /> evaluated those samples and the earlier results (EA 1987 ) . <br /> EA installed four additional monitoring wells in February 1988. <br /> Since then, all wells have been gauged and sampled on a quarterly <br /> basis. Table 1 summarizes the results of gauging from February <br /> ,_. 1988 to March 1990. <br /> s <br /> • c51 /97780/6-90/tx 2 <br />