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Report Number 35601 <br /> i <br /> QC Report Matrix Spike/Matrix Spike Duplicate Date 11/7/2003 <br /> Project Name 7-Eleven Store #32262 <br /> Project Number 77EL 32262 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 35601-01 <0 50 379 400 36211, 394 ug/L EPA 82608 1115103 95 7 984 276 70-130 25 <br /> Toluene 35601-01 <0 50 379 400 374 Ii 406 ug/L EPA 8260E 1115103 986 101 2 80 70-130 25 <br /> Tert-Butanol 35601-01 <5 0 189 200 1185 1 204 ug/L EPA 8260B 1115103 977 102 4 19 70-130 25 <br /> Methyl-t-Butyl Ether 35601-01 <0 50 379 400 35 3 j 359 ug/L EPA 8260B 1115103 933 898 3 82 70-130 25 <br /> Benzene 35598-01 <0 50 400 400 37 6 366 ug/L EPA 8260B 1115103 939 91 5 2 54 70-130 25 <br /> Toluene 35598-01 <0 50 400 400 39 0 I'! 380 ug/L EPA 8260B 1115103 974 950 2 52 70-130 25 <br /> Tert-Butanol 35598-01 <50 200 200 198 203 ug/L EPA 82608 11/5/03 992 101 228 70-130 25 <br /> Methyl-t-Butyl Ether35598-01 <0 50 400 400 44 6 433 ug/L EPA 8260B 1115103 112 108 307 70-130 25 <br /> Benzene 35644-01 <0 50 400 400 433 422 ug/L EPA 8260B 1116103 108 106 243 70-130 25 <br /> Toluene 35644-01 <0 50 400 400 376 374 ug/L EPA 82606 1116103 941 936 0 533 70-130 25 <br /> Tert-Butanol 35644-01 15 200 200 202 206 ug/l_ EPA 82608 1116103 934 953 203 70-130 25 <br /> Methyl-t-Butyl Ether 35644-01 150 400 400 203 223 ug/L EPA 8260E 1116/03 140 189 297 70-130 25 <br /> Approved By R P Furry ' <br /> KIFF ANALYTICAL, LLC <br /> 2795 2nd St, Suite 30Vvis, CA 95616 530-297-4800 <br />