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• • <br /> Report Number 37317 <br /> QC Report Matrix Spike/Matrix Spike Duplicate Date 3/12/2004 <br /> Protect Name 7-Eleven Store #14117 <br /> Project Number 77EL 14117 04 <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 37317-08 56 400 400 970 925 ug/L EPA 8260B 317104 102 91 2 116 70-130 25 <br /> Toluene 37317-08 140 400 400 193 185 ug/L EPA 8260B 317/04 123 104 172 70-130 25 <br /> Tert-Butanol 37317-08 140 200 200 333 332 ug/L EPA 8260B 317104 977 971 0 701 70-130 25 <br /> Methyl-t-Butyl Ether 37317-08 67 400 400 118 120 ug/L EPA 8260B 317104 128 132 306 70-130 25 <br /> Benzene 37293-01 <0 50 400 400 381 379 ug/L. EPA 8260B 318104 952 94 8 0 461 70-130 25 <br /> Toluene 37293-01 <0 50 400 400 38 5 387 ug/L EPA 82606 318104 964 967 0 353 70-130 25 <br /> Tert-Butanol 37293-01 <5 0 200 200 193 194 ug/L EPA 8260B 318104 966 968 0 163 70-130 25 <br /> Methyl-t-Butyl Ether 37293-01 1 8 400 400 390 34 2 ug/L EPA 8260B 318104 928 809 138 70-130 25 <br /> i <br /> Benzene 37331-01 <0 50 400 400 400 372 ug/L EPA 8260B 319104 100 929 735 70-130 25 <br /> Toluene 37331-01 <0 50 400 400 404 378 ug/L EPA 8260B 319104 101 944 6 65 70-130 25 <br /> Tert-Butanol 37331-01 <5 0 200 200 206 198 ug/L EPA 8260B 319104 103 989 3 88 70-130 25 <br /> Methyl-t-Butyl Ether 37331-01 098 400 400 380 354 ug/L EPA 8260B 319!04 92 5 859 731 70-130 25 <br /> KIFF ANALYTICAL, LLC Approved By R P Furry <br /> i <br /> 2795 2nd St, Suite 300 Davis, CA 95616 530-2974800 <br />