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Job Number 492710 QUAL 1 TY CONTROL R E S U L TS Report Date 01/06/2000 <br /> CUSTOMER IT Group PROJECT- Southland - Martinez ATTN Rhonda Teicheira <br /> QC Type Description Reag Code Lab 1D Dilution Factor Date Time <br /> MSD Matrix Spike Duplicate 09120801 492702-1 01/04/2000 0923 <br /> Parameter/Test Description QC Result QC Result True Value Orig Value Calc Result * Limits F <br /> asoline Range Petroleum Hydrocarbons 1708 1764 1000 0 874 83 2 3054-150 <br /> ' CCV Continuing Calibration Verification 09120801 01/06/2000 1041 <br /> Parameter/Test Description QC Result QC Result True Value Orig Value Calc Result * Limits F <br /> asoline Range Petroleum Hydrocarbons 947 1000 0 95 80-120 <br /> Test Method EPA 80216 Batch 10442 Analyst evd <br /> Method Description Volatile Organics -Aromatics Units ug/L <br /> CV Calibration Verification 09111501 01/05/2000 1953 <br /> Parameter/Test Description QC Result QC Result True Value Orig Value Calc Result * Limits F <br /> enzene 49 67 54 49 85-115 <br /> Ethylbenzene 48 93 50 98 85-115 <br /> ethyl-t-Butyl Ether (MTBE) 265 28 250 106 70-130 <br /> ITylenes <br /> oluene 50 93 50 102 85-115 <br /> (total) 153 61 150 102 85-115 <br /> MB Method Blank Ir <br /> 01/05/2000 2019 <br /> Parameter/Test Description QC Result QC Result True Value Orig Value Calc Result * Limits F <br /> tEBenzene 0 00 <br /> thylbenzene 0 00 <br /> ethyl-t-Butyl Ether (MTBE) 1 32 <br /> Toluene 0 00 <br /> Xylenes (total) 0 00 <br /> CV Calibration Verification <br /> 09111501 01/05/2000 0134 <br /> Parameter/Test Description QC Result QC Result True Value Orig Value Calc Result * Limits F <br /> 'Benzene 48 81 50 98 85-115 <br /> Ethylbenzene 47 78 50 96 85-115 <br /> ,Methyl-t-Bulyl Ether 11IT6E1 268 19 250 107 70-130 <br /> Toluene 49 60 50 99 85-115 <br /> Xylenes (total) 149 81 150 100 85-115 <br /> Page 9 * %=X REC, R=RPD, A=ABS Diff , D=% Diff <br />