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r r r rr r � r �r r � r �II� I� �r r rl� r �■■ � <br /> Report Number: 54688 <br /> QC Report : Matrix Spike/Matrix Spike Duplicate Date : 02/12/2007 <br /> Project Name : Unocal Op Unit <br /> Project Number '. 6324.02 <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. Recov. Diff. Limit Limit <br /> TPH as Diesel Blank <50 1000 1000 1180 1230 ug/L M EPA 8015 2/6/07 118 123 3.80 70-130 25 <br /> 1,1-Dichloroethane 54676-02 0.51 40.0 40.0 38.8 36.6 ug/L EPA 8260B 2/6/07 95.8 90.2 6.10 70-130 25 <br /> Benzene 54676-02 <0.50 40.0 40.0 37.9 35.6 ug/L EPA 8260B 2/6/07 94.7 88.9 6.28 70-130 25 <br /> 1,2-Dichloroethane 54676-02 <0.50 40.0 40.0 36.2 33.9 ug/L EPA 8260B 2/6/07 90.6 84.8 6.50 70-130 25 <br /> Toluene 54676-02 <0.50 40.0 40.0 35.5 33.3 ug/L EPA 8260B 2/6/07 88.7 83.3 6.19 70-130 25 <br /> Chlorobenzene 54676-02 <0.50 40.0 40.0 40.1 37.5 ug/L EPA 8260B 2/6/07 100 93.7 6.68 70-130 25 <br /> Tert-Butanol 54676-02 <5.0 200 200 181 167 ug/L EPA 8260B 2/6/07 90.3 83.4 7.91 70-130 25 <br /> Methyl-t-Butyl Ether 54676-02 <0.50 40.0 40.0 39.2 37.4 ug/L EPA 8260B 2/6/07 98.0 93.6 4.58 70-130 25 <br /> 1,1-Dichloroethane 54705-01 <0.50 40.0 40.0 39.4 38.3 ug/L EPA 8260B 2/7/07 98.5 95.8 2.76 70-130 25 <br /> Benzene 54705-01 <0.50 40.0 40.0 40.6 40.1 ug/L EPA 8260B 2/7/07 102 100 1.30 70-130 25 <br /> 1,2-Dichloroethane 54705-01 <0.50 40.0 40.0 37.0 36.9 ug/L EPA 8260B 2/7/07 92.6 92.3 0.394 70-130 25 <br /> Toluene 54705-01 <0.50 40.0 40.0 38.9 37.7 ug/L EPA 8260B 2/7/07 97.4 94.3 3.17 70-130 25 <br /> Chlorobenzene 54705-01 <0.50 40.0 40.0 42.1 41.7 ug/L EPA 8260B 2/7/07 105 104 0.825 70-130 25 <br /> Tert-Butanol 54705-01 <5.0 200 200 188 191 ug/L EPA 8260B 2/7/07 93.9 95.4 1.59 70-130 25 <br /> Methyl-t-Butyl Ether 54705-01 <0.50 40.0 40.0 39.5 39.0 ug/L EPA 8260B 2/7/07 98.7 97.6 1.14 70-130 25 <br /> TPH as Diesel Blank <50 1000 1000 863 892 ug/L M EPA 8015 2/12/07 86.3 89.2 3.39 70-130 25 <br /> Approved B <br /> KIFF ANALYTICAL, LLC pp Y Joiff <br /> v <br /> 2795 2nd Street, Suite 300 Davis, CA 95618 530-297-4800 <br />