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STE Project No. 4001-001 <br /> Page 4 <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 /> TABLE 5 <br />' GROUNDWATER SAMPLE ANALYSES <br /> ( 9-25-91) <br /> SAMPLE LOCATION/CONCENTRATION <br />' CONSTITUENT NW-6 MW-10 MW-11 MW-12 MW-13 <br /> (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) <br /> Benzene ND ND 0. 3 ND ND <br /> Toluene 0. 5 ND ND ND ND <br /> Ethylbenzene ND ND ND ND ND <br /> Xylene 1. 2 ND ND ND ND <br /> TPH-Gasoline ND ND ND ND ND <br /> NOTE: ND Represents none detected <br /> On December 9 , 1991 SUN TECH sampled eight monitoring wells <br /> located on, or within, the vicinity of the GLDM property <br /> located at 16 Cherokee Lane, Lodi , California. <br /> Although 13 monitoring wells, and 1 extraction well exist on, <br /> or near the subject property (Figure 2) , only 8 of the <br /> 1 monitoring wells contained sufficient quantities of water for <br /> purging and sampling. The 6" extraction well was not sampled <br /> at this time. <br /> Linda A. Turkatte, Environmental Health Specialist for the <br /> San Joaquin County Public Health Services Department, was on <br /> site to observe the December sampling activities. <br /> 1 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 6 ) . <br /> 1 <br /> 1 <br /> 1 <br />