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Report Number 26251 <br /> QC Report. Matrix Spikel Matrix Spike Duplicate Date 519102 <br /> Project Name Chevron 9-57751304 W. <br /> Project Number 77CH.43452.00.0550 <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 /> Benzene 26278-01 30 40 0 400 fib 7 647 ug/L EPA 8260B 519102 906 857 561 70-130 25 <br /> Toluene 26278-01 27 400 400 387 382 uglL EPA 8260B 519102 900 888 143 70-130 25 <br /> Tera Butanol 26278-01 11 200 200 200 200 uglL EPA 8260B 519102 945 944 00582 70-130 25 <br /> Methyl-t-Butyl Ether 26278-01 21 400 400 348 342 uglL EPA 8260B 519102 81 8 804 176 70-130 25 <br /> Benzene 26251-01 <0 50 400 400 425 417 uglL EPA 8260B 518102 106 104 188 70-130 25 <br /> Toluene 26251-01 <0 50 400 400 396 384 uglL EPA 8260B 518!02 989 96 1 2 84 70-130 25 <br /> Tert-Butanol 26251-01 <5 0 200 200 191 196 ug/L EPA 82608 5!8!02 956 983 2 82 70-130 25 <br /> Methyl-t-Butyl Ether 26251-01 <0 50 400 400 420 402 uglL EPA 8260B 5!8102 105 100 458 70-130 25 <br /> I <br /> i <br /> Approved By J6el Kif# <br /> KIFF ANALYTICAL, LLC { <br /> 720 Olive Drive, Suite D Davis, CA 95616 530-297-4800 U <br />