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4r <br /> Report Number 38604 <br /> QC Report Matrix Spikel Matrix Spike Duplicate Date 06/14/2004 <br /> Project Name SAN JOAQUIN CATHOLIC <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 /> Method y <br /> Parameter ample Value Level Level Value Value Units Analyzed Recov Recov Diff Limit Limit, , .. <br /> Benzene 38648-01 <0 50 399 397 39 9 394 ug/L EPA 8260B 619104 999 994 0 514 70-130 25 <br /> Toluene 38648-01 <0 50 399 397 39 7 393 ug/L EPA 82608 619104 99 6 990 0 606 70-130 25 <br /> Tert-Butanol 38648-01 <5 0 200 198 196 197 ug/L EPA 82606 619104 980 994 1 33 70-130 25 <br /> Methyl-t-Butyl Ether 38648-01 <0 50 399 39 7 41 9 416 ug/L EPA 8260B 619104 105 105 0 258 70-130 25 <br /> Benzene 38608-03 <0 50 400 400 37 0 352 ug/L EPA 8260B 617/04 924 880 493 70-130 25 <br /> Toluene 38608-03 <0 50 400 400 382 367 ug/L EPA 8260B 617104 954 91 7 3 94 70-130 25 <br /> Tert-Butanol 38608-03 <5 0 200 200 190 191 ug/L EPA 8260B 617104 951 95 7 0 690 70-130 25 <br /> Methyl-t-Butyl Ether 38608-03 <0 50 400 400 359 347 ug/L EPA 8260B 617104 89 8 86 8 346 70-130 25 <br /> Benzene 38626-01 <0 50 400 400 351 348 ug/L EPA 8260B 618104 878 871 0 801 70-130 25 <br /> Toluene 38626-01 <0 50 400 400 362 36 0 ug/L EPA 82608 618104 906 901 0 596 70-130 25 <br /> Tert-Butanol 38626-01 <5 0 200 200 186 182 ug/L EPA 8260E 618104 932 91 1 235 70-130 25 <br /> Methyl-t-Butyl Ether 38626-01 <0 50 400 400 337 348 ug/L EPA 8260B 618104 84 3 869 304 70-130 25 <br /> Benzene 38639-02 <0 50 400 400 383 365 ug/L EPA 8260B 618104 958 912 4 93 70-130 25 <br /> Toluene 38639-02 <0 50 400 400 385 372 ug1L EPA 82606 618104 962 930 337 70-130 25 <br /> Tert-Butanof 38639-02 <5 0 200 200 187 192 ug/L EPA 8260B 618104 937 958 230 70-130 25 <br /> Methyl-t-Butyl Ether 38639-02 <0 50 400 400 378 364 ug/L EPA 8260B 618104 945 909 3 85 70-130 25 <br /> Benzene 38621-03 1 8 400 400 38 4 367 ug/L EPA 8260B 617104 915 874 4 61 70-130 25 <br /> Toluene 38621-03 <0 50 400 400 366 35 6 ug/L EPA 826013 617104 915 889 2 86 70-130 25 <br /> KIFF ANALYTICAL, LLC Approved By Jo iff <br /> 2795 2nd St, Suite 300 Davis, CA 95616 530-297-4800 <br />