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1 <br />' On June 29 , 1992, SUN TECH sampled monitoring wells 6, 7, 10 , <br /> 11 , 12 and 13 . <br />' The groundwater samples were analyzed by a California certified <br /> laboratory (Sherwood Labs Corp; ) using EPA method 602 for BTEX <br /> analysis, with a detection limit of 0. 3 ug/Kg, and EPA method <br />' 5030/Mod. 8015 for TPH-Gasoline analysis, with a detection limit <br /> Of 50. 0 ug/L (Table 9 ) . <br />' TABLE 9 <br /> GROUNDWATER SAMPLE ANALYSES <br /> (6-29-92) <br /> SAMPLE LOCATION/CONCENTRATION <br /> MW-6 MW-7 MW-10 MW-11 MW-12 MW-13 BLANK <br /> (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) <br /> B ND ND ND ND ND ND ND <br /> T ND 0.4 ! ND ND ND ND ND <br /> E ND ND ND ND ND ND ND <br /> X 0 . 37 ND ND ND ND ND ND <br /> TPH-G ND ND ND ND ND ND ND <br /> NOTE: ND Represents none detected <br /> 2.0 CURRENT QUARTERLY MONITORING <br /> SUN TECH sampled monitoring wells 6 , 7 , 10, 11, 12 , and 13 <br /> October 1, 1992 . MW-4 was dry, and therefore not sampled. <br /> The groundwater samples were analyzed by a California certified <br /> laboratory (Sherwood Labs Corp. ) using EPA method 602 for BTEX <br /> analysis, with a detection limit of 0. 3 ug/Kg, and EPA method <br /> 5030/Mod. 8015 for TPH-Gasoline analysis, with a detection limit <br /> of 50.0 ug/L. (See Table 10 and Appendix A) . <br /> TABLE 10 <br /> GROUNDWATER SAMPLE ANALYSES <br /> (10-1-92 ) <br /> SAMPLE LOCATION/CONCENTRATION <br /> MW-6 MW-7 MW-10 MW-11 MW-12 MW-13 <br /> (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) <br /> B ND ND ND ND ND ND <br /> T ND ND ND ND ND ND <br /> E ND ND ND ND ND ND <br /> X ND ND ND ND ND ND <br /> TPH-G ND ND ND ND ND ND <br /> NOTE: ND Represents none detected <br /> 6 <br /> STE Project No. 4001 <br /> Page 6 <br />