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STE Project No. 4001-001 <br /> Page 3 <br />' On May 20 , 1991, Blaine Tech Services, Inc. (BTS) , performed <br /> the sampling of the newly constructed monitoring wells 10, <br /> 11 , 12 , 13 , and EW-1 (Figure 2) . The results of this <br /> sampling episode are represented as Table 3 . <br />' TABLE 3 <br /> GROUNDWATER SAMPLE ANALYSES <br />' (5-20-91) <br /> SAMPLE LOCATION/CONCENTRATION <br /> CONSTITUENT MW-10 MW-11 MW-12 MW-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 />' 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 MW-4 MW-5 MW--6 MW-7 MW-8 MW-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 />