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� r r r r r■ ;•r ■r r r Mr r �■r �r r r �r r 1, ' <br /> Report Number 30100 <br /> QC Report Matrix Spike/Matrix Spike Duplicate Date 12/10/2002 <br /> Project Name STOCKTON SJCC <br /> Project Number SJCC <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 30100-01 <0 50 400 400 438 427 ug/L EPA 82606 1215102 110 107 254 70-130 25 <br /> Toluene 30100-01 <0 50 400 400 420 409 ug/l_ EPA 8260B 1215102 105 102 253 70-130 25 <br /> Tert-Butanol 30100-01 <5 0 200 200 206 202 ug/L EPA 82606 1215102 103 101 1 58 70-130 25 <br /> Methyl-t-Butyl Ether 30100-01 <0 50 400 400 39 9 401 ug/L EPA 82606 1215102 998 100 0 575 70-130 25 <br /> Benzene 30100-02 <0 50 400 400 432 41 8 uglL EPA 8260E 1217102 108 104 331 70-130 25 <br /> Toluene 30100-02 <0 50 400 400 426 408 ug/L EPA 82606 1217102 107 102 443 70-130 25 <br /> Tert-Butanol 30100-02 <5 0 200 200 210 206 ug/L EPA 82606 1217102 105 103 1 78 70-130 25 <br /> Methyl-t-Butyl Ether 30100-02 38 400 400 79 0 790 ug/L EPA 8260B 1217102 102 102 00735 70-130 25 <br /> Benzene 30094-01 <0 50 400 400 439 424 ug/L EPA 8260E 1218102 110 106 336 70-130 25 <br /> Toluene 30094-01 <0 50 400 400 421 41 0 ug/L EPA 8260B 1218102 105 102 2 79 70-130 25 <br /> Tert-Butanol 30094-01 <5 0 200 200 204 209 ug/L EPA 82606 1218102 102 104 216 70-130 25 <br /> Methyl-t-Butyl Ether 30094-01 <0 50 400 400 39 7 395 ug/L EPA 82606 1218102 992 988 0 429 70-130 25 <br /> Benzene 30100-07 <0 50 400 400 382 375 ug/L EPA 82606 1217102 956 938 1 95 70-130 25 <br /> Toluene 30100-07 <0 50 400 400 368 36 3 ug/L EPA 8260B 1217102 920 908 1 39 70-130 25 <br /> Tert-Butanol 30100-07 <5 0 200 200 210 205 ug/L EPA 8260B 1217102 105 102 223 70-130 25 <br /> Methyl-t-Butyl Ether 30100-07 <0 50 400 400 426 429 ug/L EPA 82606 1217102 106 107 0 724 70-130 25 <br /> Benzene 30100-03 <0 50 400 400 422 408 ug/L EPA 8260B 1215102 106 102 342 70-130 25 <br /> Toluene 30100-03 <0 50 400 400 402 388 ug/L EPA 82606 1215102 100 970 362 70-130 25 <br /> Approved By J el Kiff <br /> KIFF ANALYTICAL, LLC I 1 <br /> 2795 2nd St, Suite 300 Davis, CA 95616 530-297-4800 U <br />