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URS GROUP INC <br /> Client Sample ID: DM-1 <br /> GC/MS Volatiles <br /> Lot-Sample #.. . : G3L190337-001 Work Order #. . . : F646TIAA Matrix. . .. . ... . WATER <br /> REPORTING <br /> PARAMETER RESULT LIMIT UNITS <br /> 1,1,1,2-Tetrachloroethane PID 1.0 ug/L <br /> Ethylbenzene ND 1.0 ug/L _r <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 /> isopropylbenzene ND 1.0 ug/L <br /> Bromobenzene ND 1.0 ug/L <br /> 1,1,2,2-Tetrachloroethane ND 1.0 ug/L <br /> 1,2,3-Tri.chloropropane 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 /> Cert-Butylbenzene ND 1.0 ug/L <br /> 1,2,4-Trimethylbenzene NO 1.0 ug/L <br /> sec-Butylbenzene ND 1.0 ug/L <br /> 1,3-Dichlorobenzene ND 1.0 ug/L <br /> p-lsopropyltoluene 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 <br /> benzene <br /> Hexachlorobutadiene ND 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 /> Dibromofluoromethane 102 (81 - 128) r <br /> 1,2-Dichloroethane-d4 95 (75 - 134) <br /> Toluene-d8 87 (80 - 121) <br /> 4-Bromofluorobenzene 78 * (80 - 120) <br /> NOTE(S) : <br /> • Surrogate recovm7 is outside stated control limits. <br /> GK190337 STL Sacramento(916)373-5600 7 of 44 <br />