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STE Project No. 4001-001 <br /> Page 7 <br />' a detection limit of 50 . 0 ug/L (Table 10 ) . <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 />' SUN TECH sampled monitoring wells 6 , 7 , 8 , 9 , 10 , 11, 12 , 13 , <br /> and EW-1 December 31 , 1992. MW-1 through MW-5 were dry, and <br /> therefore not sampled. The groundwater samples were analyzed <br />' by a California certified laboratory (Sherwood Labs Corp. ) <br /> using EPA method 602 for BTEX analysis, with a detection <br /> limit of 0 . 3 ug/Kg, and EPA method 5030/Mod. 8015 for TPH- <br /> Gasoline analysis, with a detection limit of 50. 0 ug/L. (See <br /> Table 11) . <br /> TABLE 11 <br /> GROUNDWATER SAMPLE ANALYSES <br /> (12-31-92 ) <br /> SAMPLE LOCATION/CONCENTRATION <br /> MW-6 MW-7 MW-8 MW-9 MW-10 MW-11 MW-12 MW-13 EW-1 <br /> (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) <br />' B ND 0. 5 55 . 0 39.0 0 . 3 ND ND ND 1. 4 <br /> T ND 0 .5 15 .0 10.0 ND ND ND ND 0 . 3 <br /> E 1. 4 ND 30 .0 44 . 0 ND ND ND ND 2. 3 <br />' X 1. 6 ND 15 .0 46. 0 ND ND ND ND 3 . 3 <br /> TPH-G 78. 0 50 .0 1580.0 1600. 0 ND ND ND ND 70 .0 <br /> NOTE: ND Represents none detected <br />' 2.0 CURRENT GROUNDWATER MONITORING <br />' SUN TECH sampled monitoring wells 6 , 9 , 10, 11 , 12 , and 13 on <br /> April 1, 1993 , and monitoring wells 7 , 8 , and EW-1 April 9 , <br /> 1993 . MW-1 through MW-5 were dry, and therefore not sampled. <br /> Representatives of the County and Regional Board were on-site to <br /> observe, and to collect split samples for analysis. <br /> 1 <br />