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TABLE 3 <br /> GROUNDWATER SAMPLE ANALYSES <br /> (5-20-91) <br />' SAMPLE LOCATION/CONCENTRATION <br /> CONSTITUENT MW-10 NW-11 NW-12 NW-13 EW-1 <br />' (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) <br /> Benzene ND ND ND ND 330. 0 <br /> Toluene ND 0 . 3 ND 0. 3 24.0 <br />' Ethylbenzene ND ND ND ND 240 .0 <br /> Xylene ND 0. 6 ND 0 . 6 1200. 0 <br /> TPH-Gasoline ND 190 .0 ND ND 7200.0 <br /> 1 EPA Method 601 <br /> 1, 1-Dichloroethene ND ND, ND 2 .0 ND <br />' 1,2-Dichloroethane ND 0 . 7 9.0 33 . 0 15.0 <br /> Trichloroethylene ND ND ND 8.0 ND <br /> Chlorobenzene ND ND ND 2 . 0 ND <br /> Tetrachloroethene ND ND 0.7 ND ND <br />' NOTE: ND Represents none detected <br />' On June 24 , 1991, BTS performed the quarterly sampling of <br /> monitoring wells 1 through 9 . The results of this sampling <br /> episode are summarized as Table 4 . <br /> TABLE 4 <br /> GROUNDWATER SAMPLE ANALYSES <br /> ( 6-24-91) <br /> SAMPLE LOCATION/CONCENTRATION <br /> NW-1 MW-2 MW-3 NW-4 MW-5 NW-6 MW-7 MW-8 NW-9 <br /> (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) <br /> B 22 .0 0. 5 39 .0 7400 .0 230 . 0 ND ND 0. 4 300 . 0 <br /> T ND 0 . 3 ND 7000 .0 86 .0 ND ND 0 .64 190 .0 <br /> E 64 .0 ND 200 . 0 970.0 0 .4 ND ND 1. 1 180 . 0 <br /> X 28. 0 1. 3 81 .0 5700 .0 53 .0 ND ND 15 .0 240.0 <br /> TPH-G 1300.0 ND 4300 .0 54000. 0 880 .0 ND 79 . 0 140. 0 3900 . 0 <br /> NOTE: ND Represents none detected <br /> On September 25, 1991, BTS performed the quarterly sampling <br />' of monitoring wells 6, 10 , 11 , 12 , and 13 . Water levels in <br /> the other monitoring wells was not sufficient to allow <br /> purging and sampling. The results of this sampling episode <br />' are represented as Table 5 . <br /> 1 STE Project No. 4001 <br /> Page 3 <br />