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ww ww ww ww ww ww w w ww ww ww w ww �w ww ww ww w w <br /> Report Number 37705 <br /> QC Report• Matrix Spike/Matrix Spike Duplicate Date 04/09/2004 <br /> Project Name San Joaquin Co, Parking <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 Recov Diff Limit Limit <br /> TPH as Diesel Blank <50 1000 1000 1200 1130 ug/L M EPA 8015 416104 120 113 598 70-130 25 <br /> TPH as Diesel Blank <50 1000 1000 970 1100 ug/L M EPA 8015 418104 970 110 127 70-130 25 <br /> Benzene 37690-14 <0 50 66 4 660 508 639 ug/L EPA 8260B 414104 765 968 234 70-130 25 <br /> Toluene 37690-14 <0 50 66 4 66 0 506 635 ug/L EPA 82608 414104 76 1 962 233 70-130 25 <br /> Tert-Butanol 37690-14 <5 0 332 330 334 331 ug/L EPA 8260E 414104 100 100 00945 70-130 25 <br /> Methyl-t-Butyl Ether 37690-14 <0 50 664 660 686 672 ug/L EPA 8260B 414104 103 102 140 70-130 25 <br /> �1a�- <br /> 6/)e�f1 <br /> S9�lC <br /> Approved By Jeb" h ' <br /> KIFF ANALYTICAL, LLC <br /> 2795 2nd St, Suite 300 Davis, CA 95616 530-297-4800 <br />