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0 <br /> R- <br /> LAB CORE LABORATORIES <br /> Q U A L I T Y C 0 N T R 0 L R E S U L T S <br /> Job Number 981324 Date 09/14/98 <br /> CUSTOMER Fluor Daniel GTI PROJECT. SL MANTECA #19976 ATTN Shelby Lathrop <br /> QC Type Description Reag Code tab ID Dilution Factor Date Time <br /> Test Method EPA 8020A Batch 2812 Analyst sdg <br /> Method Description Volatile Organics -Aromatics Units ug/L <br /> IV initial Calibration Verification 8020 08082701 09/10/98 0118 <br /> Parameter/Test Description QC Resutt QC Result True Value Orig Value Calc Result * Limits <br /> inzene 17 593 20 88 % 85-115 <br /> hylbenzene 18 514 20 93 % 85-115 <br /> thyt-t-Butyt Ether (MTBE) 13 965 20 70 % 70-130 <br /> Toluene 18 727 20 94 % 85-115 <br /> lenes (total) 55 64 60 93 / 85-115 <br /> MB Method Stank 09/10/98 0143 <br /> Parameter/Test Description QC Result QC Result True Value Orig Value Calc Result * Limits <br /> nzene 0 0 5000 <br /> Etbenzene 0 0 5000 <br /> -t-Butyl Ether (MTBE) 0 10 0000 <br /> e 0 0 5000 <br /> lens (total) 0 00 0 5000 <br /> CV Continuing Calibration Verification 1)8082701 09/30/98 1008 <br /> Parameter/7Psc Description QC Result QC Result True Value Orig Value Calc ResuLt * Limits <br /> nzene 17 20 85 D 85-115 <br /> lhylbenzene 16 992 20 85 D 85-115 <br /> thyt-t-Butyt Ether (MTBE) 15 423 20 77 D 70-130 <br /> Toluene 17 183 20 86 D 85-115 <br /> X lens (total) 50 90 60 85 D 85-115 <br /> CV Continuing Calibration Verification 08082701 09/11/98 0154 <br /> Parameter/Test Description QC Result QC Result True Value Orig Value Calc Result * Limits <br /> 'nzene 17 20 85 D 85-115 <br /> Ethylbenzene 17 675 20 88 D 85-115 <br /> Methyl-t-Butyl Ether (MTBE) 15 523 20 78 D 70-130 <br /> `luene 17 722 20 89 D 85-115 <br /> ienes (total) 52 15 60 87 D 85-115 <br /> Page 8 <br /> * %-% REC R-RPD A-ABS Diff D-% Diff <br />