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r� rr r ar �■r r� �r rr r ir M M r M M M M <br /> Report Number 25168 <br /> QC Report Matrix Spike/Matrix Spike Duplicate Date 3122/2002 <br /> Project Name San Joaquin Catholic <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 /> _ <br /> Parameter Sample p Value Level Level Value Value Units Method Analyzed Recov Recov Diff Limit Limit <br /> Benzene 25198-01 <0 50 400 400 39 6 386 uglL EPA 8260B 31141200298 9 964 2 56 70-130 25 <br /> Toluene 25198-01 <0 50 400 400 406 402 ug/L EPA 8260B 311412002102 100 1 16 70-130 25 <br /> Tert-Butanol 25198-01 12 200 200 180 195 uglL EPA 8260B 3114/200284 4 915 804 70-130 25 <br /> Methyl-t-Butyl Ether 25198-01 1 7 400 400 424 416 uglL EPA 82606 311412002102 997 199 70-130 25 <br /> Benzene 25229-01 <0 50 400 400 408 398 uglL EPA 8260B 311412002102 994 248 70-130 25 <br /> Toluene 25229-01 <0 50 400 400 407 391 uglL EPA 82606 3114/2002102 978 386 70-130 25 <br /> Tert-Butanol 25229-01 1700 200 200 1920 1960 uglL EPA 8260B 311412002108 129 176 70-130 25 <br /> Methyl-t-Butyl Ether 25229-01 <0 50 400 400 388 372 uglL EPA 8260E 31141200296 9 93 0 414 70-130 25 <br /> Benzene 25256-05 <0 50 400 400 39 3 38 7 ug1L EPA 8260B 31151200298 2 96 6 162 70-130 25 <br /> Toluene 25256-05 <0 50 400 400 39 5 38 7 ug/L EPA 82608 31151200298 8 968 204 70-130 25 <br /> Tert-Butanol 25256-05 <5 0 200 200 203 200 uglL EPA 8260B 311512002101 100 120 70-130 25 <br /> Methyl-t-Butyl Ether25256-05 14 400 400 385 387 uglL EPA 82606 31151200292 6 930 0 431 70-130 25 <br /> Benzene 25151-05 <0 50 400 400 402 39 7 uglL EPA 82608 311512002100 993 1 18 70-130 25 <br /> Toluene 25151-05 <0 50 400 400 401 400 uglL EPA 82606 311512002100 100 0 324 70-130 25 <br /> Tert-Butanol 25151-05 <5 0 200 200 200 207 uglL EPA 8260B 31151200299 9 103 340 70-130 25 <br /> Methyl-t-Butyl Ether 25151-05 <0 50 400 400 363 369 uglL EPA 8260B 31151200290 8 924 169 70-130 25 <br /> Benzene 25335-07 <0 50 400 400 420 418 uglL EPA 8260B 311612002105 104 0 525 70-130 25 <br /> Toluene 25335-07 <0 50 400 400 401 387 uglL EPA 8260B 311612002100 96 8 3 58 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 />