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�l � �■■� I• � r• a� iiii� iiiiii• iiiiii■ � i� i� � i� � � <br /> Report Number 23638 <br /> QC Report Matrix Spike/Matrix Spike Duplicate Date 12/7/2001 <br /> Project Name San Joaquin County Motor <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 DUD 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 /> Spike Recovery Data <br /> Benzene 23638-01 <0 0050 00387 00385 00336 00356 mg/Kg EPA 8260B 12131200187 0 924 610 70-130 25 <br /> Toluene 23638-01 <0 0050 00387 00385 00318 00334 mg/Kg EPA 8260B 1213/200182 2 868 538 70-130 25 <br /> Tert-Butanol 23638-01 <0 0050 0 193 0193 0168 0 166 mg/Kg EPA 82608 12131200186 9 862 0 786 70-130 25 <br /> Methyl-t Butyl Ether 23638-01 <0 0050 00387 00385 00399 00399 mg/Kg EPA 8260E 121312001103 104 0 411 70-130 25 <br /> Approved By J el Kiff <br /> KIFF ANALYTICAL, LLC <br /> 720 Olive Drive, Suite D Davis, CA 95616 530-297-4800 <br />