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BROWN AND CALDWELL LABORATORIES <br /> BATCH QC REPORT <br /> ORDER E8906613 <br /> DATE REPORTED 07/13/89 Page 1 <br /> MATRIX QC ACCURACY (SPIKES) <br /> DATE BATCH SEAR TRUE PERCENT <br /> PARAMETER ANALYZED NUMBER RESULT VALUE UNIT RECOVERY <br /> j TPH-Volatile Hydrocarbons/BTEX <br /> Dilution Factor 07.07.89 35 1. 1 Times 100 <br /> Benzene 07.07.89 35 102 100 ug/L 102 <br /> Ethylbenzene 07.07.89 35 94 100 ug/L 94 <br /> Toluene 07.07.89 . 35 98 100 ug/L 98 <br /> Total Xylene Isomers 07.07.89 . 35 233 200 ug/L 117 <br /> C4 to C12 Hydrocarbons 07.07.89 35 917..5 891 ug/L 103 <br /> TPH-Volatile Hydrocarbons/BTEX <br /> Dilution Factor 07.06.89 34 1 1 Times 100 <br /> Benzene 07.06.89 34 3.625 4.87 mg/kg 74 <br /> Ethylbenzene 07.06.89 34 3.8 4.87 mg/kg 78 <br /> Toluene 07.06.89 34 3.755 4.87 mg/kg 77 <br /> Total Xylene Isomers 07.06.89 34 9.53 9.74 mg/kg 98 <br /> C4 to C12 Hydrocarbons 07.06.89 34 40 43.4 mg/kg 92 <br />