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O.E.S.-Port Stockton <br /> 1950 Miner Avenue <br /> November 9, 1990 <br /> Page -4- <br /> 4 . 0 LABORATORY RESULTS <br /> Laboratory analyses indicate that concentrations of <br /> less than 1 ppm of toluene were detected in a sample taken <br /> from beneath TK4 . Table 3 shows the results of the <br /> laboratory analyses . Laboratory report sheets indicating <br /> analytical methods used, detection limits, and results of <br /> analyses are included in Appendix B. <br /> TABLE 3 <br /> Laboratory Analyses <br /> SOIL SAMPLES <br /> TEPH <br /> B T E _ X (Diesel ) <br /> Detection 5 . 0 5 . 0 5 . 0 5 . 0 1 . 0 <br /> Limit ug/kg ug/kg ug/kg ug/kg mg/kq <br /> (Sample ID) <br /> TK4-E ND* NO ND ND ND <br /> TK4-W ND 13 ND ND ND <br /> ----------------- <br /> * ND = none detected at limit indicated <br /> 5 . 0 CONCLUSIONS AND RECOMMENDATIONS <br /> Laboratory analyses indicate that the soil adjacent to <br /> tank TK4 had only trace amounts of toluene . Condor <br /> therefore recommends that since the sources of the low <br /> levels of contamination detected have been removed, no <br /> further action is warranted at this site . <br /> CONDOR <br />