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■■r sr rr +r rr r rf rr rr r. r rr ar r r� r� Irr rr <br /> Report Number 25740 <br /> QC Report Matrix Spike/Matrix Spike Duplicate Date 4/11/2002 <br /> Project Name SJCC <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 /> Benzene 25754-02 <0 50 400 400 395 383 ug/L EPA 82606 414102 988 958 308 70-130 25 <br /> Toluene 25754-02 <0 50 400 400 380 363 ug/L EPA 8260B 414102 951 908 460 70-130 25 <br /> Tert-Butanol 25754-02 <50 200 200 204 204 ug/L EPA 82606 414102 102 102 00147 70-130 25 <br /> Methyl-t-Butyl Ether 25754-02 <0 50 400 400 32 2 324 ug/L EPA 8260B 414102 804 81 0 0 682 70-130 25 <br /> Benzene 25753-01 <0 50 400 400 41 0 403 ug/L EPA 82606 417102 103 101 1 87 70-130 25 <br /> Toluene 25753-01 <0 50 400 400 38 6 378 ug/L EPA 8260B 417102 964 94 5 1 94 70-130 25 <br /> Tert-Butanol 25753-01 9600 200 200 10300 11000 ug1L EPA 82606 4/7102 349 710 681 70-130 25 <br /> Methyl-t-Butyl Ether 25753-01 120 400 400 164 160 ug/L EPA 82606 417102 114 105 8 31 70-130 25 <br /> Benzene 25740-02 <0 50 400 400 36 7 370 ug/L EPA 82606 414102 918 925 0 732 70-130 25 <br /> Toluene 25740-02 <0 50 400 400 384 378 ug/L EPA 8260E 414102 959 94 5 1 52 70-130 25 <br /> Tert-Butanol 25740-02 <5 0 200 200 195 196 ug/L EPA 8260E 414102 97 3 978 0 461 70-130 25 <br /> Methyl-t-Butyl Ether 25740-02 78 400 400 101 104 ug/L EPA 82606 414102 56 0 64 4 14 0 70-130 25 <br /> Benzene 25756-06 <0 50 400 400 421 420 ug/L EPA 82606 417102 105 105 00951 70-130 25 <br /> Toluene 25756-06 <0 50 400 400 441 436 ug/L EPA 82606 417102 110 109 1 39 70-130 25 <br /> Tert-Butanol 25756-06 <5 0 200 200 206 206 ug/L EPA 8260B 417102 103 103 0 379 70-130 25 <br /> Methyl-t-Butyl Ether 25756-06 <0 50 400 400 39 7 41 2 ug/L EPA 82608 4!7102 994 103 3 58 70-130 25 <br /> I <br /> I � <br /> I <br /> Approved By J el Kiff <br /> KIFF ANALYTICAL, LLC E <br /> 720 Olive Drive, Suite D Davis, CA 95616 530-297-4800 <br />