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ow low Im Iwo tow <br /> 0 <br /> Report Number 37659 <br /> QC Report Matrix Spike/Matrix Spike Duplicate Date 4/1/2004 <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 /> Parameter Sample Value Level Level Value Value Units Method Analyzed Recov Recov Diff Limit Limit <br /> Benzene 37665-01 <0 50 400 400 399 386 ug/L EPA 82606 3127104 998 964 344 70-130 25 <br /> Toluene 37665-01 <0 50 400 400 428 416 ug/L EPA 82608 3127104 107 104 2 83 70-130 25 <br /> Tert-Butanol 37665-01 <5 0 200 200 210 206 ug/L EPA 8260B 3127104 105 103 2 12 70-130 25 <br /> Methyl-t-Butyl Ether 37665-01 <0 50 400 400 378 38 2 ug/L EPA 82606 3127/04 946 954 0 842 70-130 25 <br /> Benzene 37660-03 <0 50 400 400 38 5 370 ug/L EPA 8260B 3126104 96 4 92 5 410 70-130 25 <br /> Toluene 37660-03 <0 50 400 400 36 8 364 ug/L EPA 82606 3126/04 92 0 910 1 06 70-130 25 <br /> Tert-Butanol 37660-03 <5 0 200 200 193 198 uglL EPA 8260B 3126104 964 991 2 81 70-130 25 <br /> Methyi-t-Butyl Ether 37660-03 <0 50 400 400 407 397 ug/L EPA 8260B 3126104 102 99 3 244 70-130 25 <br /> Benzene 37671-01 <0 50 400 400 378 374 ug/L EPA 8260B 3127104 945 934 1 19 70-130 25 <br /> Toluene 37671-01 <0 50 400 400 366 360 ug/L EPA 8260B 3127104 91 5 900 1 70 70-130 25 <br /> Tert-Butanol 37671-01 <5 0 200 200 196 199 ug/L EPA 82606 3127104 982 996 143 70-130 25 <br /> Methyl-t-Butyl Ether 37671-01 <0 50 400 400 39 5 389 ug/L EPA 82608 3/27104 987 972 1 56 70-130 25 <br /> Benzene 37659-03 <0 50 333 333 327 31 9 ug/L EPA 8260B 3127/04 982 956 266 70-130 25 <br /> Toluene 37659-03 <0 50 333 333 345 31 6 ug/L EPA 8260B 3127/04 104 94 7 902 70-130 25 <br /> Tert-Butanol 37659-03 <5 0 167 167 169 180 ug/L EPA 8260B 3127104 101 108 6 14 70-130 25 <br /> Methyl-t-Butyl Ether 37659-03 <0 50 333 333 321 317 ug/L EPA 82606 3/27/04 96 3 952 121 70-130 25 <br /> 4'k�D, Z - <br /> Approved By J I I <br /> KIFF ANALYTICAL, LLC <br /> 2795 2nd St, Suite 300 Davis, CA 95616 530-297-4800 <br />