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Report Number 27073 <br /> QC Report Matrix Spike/Matrix Spike Duplicate Date 7/3/2002 <br /> Protect Name 2ND QTR 2442 G.W. <br /> Project Number <br /> Duplicate Spiked <br /> Duplicate Spiked Spiked Sample Relative <br /> Spike Spiked Spiked Sample Sample Relative Percent Percent <br /> Spiked Sample Spike Dup Sample Sample Analysis Date Percent Percent Percent Recov Diff <br /> Parameter Sample Value Level Level Value Value Units Method Analyzed Recov RecovDiff Limit Limit <br /> TPH as Diesel Blank <50 1000 1000 1010 1030 ug/L M EPA 8015 6127102 101 103 179 70-130 25 <br /> 1,1-Dichloroethane 27116-02 <0 50 200 199 212 21 1 ug/L EPA 82606 6129102 106 106 0 565 70-130 25 <br /> Benzene 27116-02 <0 50 200 19 9 209 210 ug/L EPA 8260E 6/29/02 104 106 121 70-130 25 <br /> 1,2-Dichloroethane 27116-02 <0 50 200 199 206 204 ug/L EPA 82608 6129/02 103 103 0 582 70-130 25 <br /> Toluene 27116-02 <0 50 200 199 208 207 ug/L EPA 8260B 6/29102 104 104 00720 70-130 25 <br /> Chlorobenzene 27116-02 <0 50 200 199 217 219 ug/L EPA 82608 6129102 109 110 114 70-130 25 <br /> Tert-Butanol 27116-02 <5 0 998 995 104 103 ug/L EPA 8260B 6/29102 105 104 115 70-130 25 <br /> Methyl-t-Butyl Ether 27116-02 60 200 199 84 3 804 ug/L EPA 82608 6129102 123 104 168 70-130 25 <br /> Benzene 27211-01 <0 50 400 400 414 414 ug/L EPA 82606 6129/02 103 103 00242 70-130 25 <br /> Toluene 27211-01 <0 50 400 400 392 393 ug/L EPA 8260B 6129/02 980 982 0 153 70-130 25 <br /> Tert-Butanol 27211-01 <5 0 200 200 211 183 ug1L EPA 82606 6129102 105 914 143 70-130 25 <br /> Methyl-t-Butyl Ether 27211-01 <0 50 400 400 320 320 ug/L EPA 8260B 6129102 801 79 9 0 219 70-130 25 <br /> Approved By J �l Kiff <br /> KIFF ANALYTICAL, LLC <br /> 720 Olive Drive, Suite D Davis, CA 95616 530-2974800 <br />