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Report Number 32416 <br /> QC Report Matrix Spike/Matrix Spike Duplicate Date 414103 <br /> Protect Name 7-Eleven Store#20632 <br /> Project Number 77EL 20632 03 <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 32416-01 <0 50 401 401 413 410 ug/L EPA 8260B 3129103 103 102 0 876 70-130 25 <br /> Toluene 32416-01 081 401 40 1 406 402 ug/L EPA 82608 3129103 992 98 2 104 70-130 25 <br /> Tert-Butanol 32416-01 <5 0 200 200 195 200 ug/L EPA 82606 3129103 974 100 2 74 70-130 25 <br /> Methyl-t-Butyl Ether 32416-01 3 0 401 401 449 446 ug/L EPA 8260B 3129/03 105 104 0 791 70-130 25 <br /> Benzene 32470-01 <0 50 400 400 426 41 6 ug/L EPA 8260B 3129/03 106 104 214 70-130 25 <br /> Toluene 32470-01 <0 50 400 400 385 37 0 ug/L EPA 82606 3129103 96 3 924 4 11 70-130 25 <br /> Tert-Butanol 32470-01 <5 0 200 200 198 189 ug/L. EPA 82606 3129103 992 94 4 4 99 70-130 25 <br /> Methyl-t-Butyl Ether 32470-01 130 400 400 133 136 ug/L EPA 82606 3/29/03 168 240 354 70-130 25 <br /> i <br /> Approved By Joel Klff <br /> KIFF ANALYTICAL, LLC 11 <br /> 2795 2nd St, Suite 300 Davis, CA 95616 530-297-4800 'J <br />