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URS GROUP INC <br /> Client Sample ID: DW-4 <br /> GC/MS volatiles <br /> Lot-Sample #. ..: G3L190337-004 Work Order #. . .: F64611-AA Matr7ix.. . .. . . . . : WATER � <br /> REPORTING <br /> PARAMETER RESULT LIMIT UNITS <br /> 1,1,1,2-Tetrachloroethane ND 1.0 ug/L <br /> Ethylbenzene ND 1.0 ug/L <br /> m-Xylene & p-Xylene ND 1.0 ug/L <br /> o-Xylene ND 1.0 ug/L : <br /> Styrene ND 1.0 ug/L <br /> Bromoform ND 1.0 ug/L <br /> Tsopropylbenzene ND 1.0 ug/L <br /> Bromobenzene ND 1.0 ug/L w <br /> 1,1,2,2-Tetrachloroethane ND 1.0 ug/L <br /> 1,2,3-Trichloropropane ND 1.0 ug/L <br /> n-Propylbenzene ND 1.0 ug/L ;+ <br /> 2-Chlorotoluene ND 1.0 ug/L <br /> 4-Chlorotoluene ND 1.0 ug/L <br /> 1,3,5-Trimethylbenzene ND 1.0 ug/L <br /> tert-Butylbenzene ND 1.0 ug/L <br /> 1,2,4-Trimethylbenzene ND 1.0 ug/L . <br /> sec-Butylbenzene ND 1.0 ug/L <br /> 1,3-Dichlorobenzene ND 1.0 ug/L <br /> p-Isopropyltoluene ND 1.0 ug/L <br /> 1,4-Dichlorobenzene ND 1.0 ug/L <br /> 1,2-Dichlorobenzene ND 1.0 ug/L <br /> n-Butylbenzene ND 1.0 ug/L <br /> 1,2-Dibromo-3- ND 2.0 ug/L <br /> chloropropane (DBCP) <br /> 1,2,4-Trichloro- ND 1.0 ug/L �l <br /> benzene I <br /> Hexachlorobutadiene ISD 1.0 ug/L � <br /> Naphthalene ND 1.0 ug/L <br /> 1,2,3-Trichlorobenzene ND 1.0 ug/L <br /> cis-1,2-Dichloroethene ND 1.0 ug/L <br /> PERCENT RECOVERY <br /> SURROGATE RECOVERY LIMITS <br /> Dibromofi:luoromethane 46 (81 - 128) a•- <br /> 1,2-Dichloroethane-d4 89 (75 - 134) <br /> Toluene-d8 75 (80 - 121) <br /> 4-Bromofluorobenzene 86 (80 - 120) <br /> NOTES) <br /> • Surrogate recovery is ouWde Staled control limits. <br /> I <br /> GK190337 STL Sacramento(916)373-5600 15 of 44 <br />