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• � i <br /> Report Number 32768 <br /> QC Report Matrix Spike/Matrix Spike Duplicate Date 4/22/2003 <br /> Project Name 2575 Country Club Blvd <br /> Project Number 245-07$3 <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 /> Benzene 32756-01 <0 50 397 397 391 39 3 ugA- EPA 82608 4118103 985 99 2 0 683 70-130 25 <br /> Toluene 32756-01 <0 50 397 397 385 384 ug1L EPA 8260B 4118103 97 0 96 9 00774 70-130 25 <br /> Tert-Butanol 32756-01 <5 0 198 198 189 196 uglL EPA 8260E 4118103 952 98 8 371 70-130 25 <br /> Methyl-t-Butyl Ether 32756-01 <0 50 397 397 394 381 ug/L EPA 8260B 4118103 99 2 961 3 20 70-130 25 <br /> Benzene 32769-01 <0 50 400 400 429 421 ugA- EPA 8260B 4118103 107 105 1 83 70-130 25 <br /> Toluene 32769-01 <0 50 400 400 386 37 3 ug/L EPA 8260B 4118103 964 932 330 70-130 25 <br /> Tert-Butanol 32769-01 <5 0 200 200 216 202 ug/L EPA 8260E 4/18103 108 101 660 70-130 25 <br /> Methyl-t Butyl Ether 32769-01 <0 50 400 400 461 459 ug/L EPA 8260B 4118103 115 115 0 522 70-130 25 <br /> Benzene 32756-04 <0 50 400 400 391 382 ug/L EPA 8260B 4118103 978 956 235 70-130 25 <br /> Toluene 32756-04 <0 50 400 400 400 398 ugA- EPA 82608 4118103 999 994 0 527 70-130 25 <br /> Tert-Butanol 32756-04 <5 0 200 200 199 200 ugA- EPA 8260B 4118103 997 999 0 175 70-130 25 <br /> Methyl-t-Butyl Ether 32756-04 <0 50 400 400 406 409 ug11- EPA 82608 4/18/03 102 102 0 736 70-130 25 <br /> Approved By J l Klff <br /> KIFF ANALYTICAL, LLC <br /> 2795 2nd St, Suite 300 Davis, CA 95616 530-297-4800 <br />