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r <br /> Report Number 28764 <br /> QC Report Matrix Spike/Matrix Spike Duplicate Date 1011102 <br /> Project Name Beacon <br /> Protect Number 3641 Stockton <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 28764-03 <0 50 198 198 201 199 ug/L EPA 8260B 9128102 101 100 0 793 70-130 25 <br /> Toluene 28764-03 <0 50 198 198 200 193 ug/L EPA 8260E 9128102 101 978 305 70-130 25 <br /> Tert-Butanol 28764-03 <5 0 991 988 104 98 8 ug/L EPA 8260B 9128102 106 100 538 70-130 25 <br /> Methyl-t-Butyl Ether 28764-03 17 198 198 360 358 ug/L EPA 8260E 9/28102 970 963 0 674 70-130 25 <br /> Benzene 28826-01 <0 50 400 400 408 400 ug/L EPA 82608 9128102 102 100 1 90 70-130 25 <br /> Toluene 28826-01 <0 50 400 400 402 388 ug/L EPA 8260E 9128102 100 970 354 70-130 25 <br /> Tert-Butanol 28826-01 <5 0 200 200 220 218 ug/L EPA 82606 9128102 110 109 0 626 70-130 25 <br /> Methyl-t-Butyl Ether 28826-01 <0 50 400 400 41 0 396 ug/L EPA 8260B 9128102 102 991 330 70-130 25 <br /> Benzene 28806-02 <0 50 400 400 41 8 398 ug/L EPA 8260B 9127102 104 995 478 70-130 25 <br /> Toluene 28806-02 <0 50 400 400 388 374 ug/L EPA 8260B 9127102 969 936 349 70-130 25 <br /> Tert-Butanol 28806-02 <5 0 200 200 204 211 ug/L EPA 8260B 9127102 102 105 293 70-130 25 <br /> Methyl-t-Butyl Ether 28806-02 <0 50 400 400 41 6 363 ug/L EPA 8260B 9127102 104 908 136 70-130 25 <br /> Benzene 28890-01 <0 50 400 400 423 423 ug/L EPA 8260B 9128102 106 106 00709 70-130 25 <br /> Toluene 28890-01 <0 50 400 400 41 8 423 ug/L EPA 8260B 9128102 105 106 1 04 70-130 25 <br /> Tert-Butanol 28890-01 <5 0 200 200 217 212 ug/L EPA 8260B 9128102 108 106 222 70-130 25 <br /> Methyl-t-Butyl Ether 28890-01 <0 50 400 400 37 1 461 ug/L EPA 8260B 9/28102 927 115 216 70-130 25 <br /> Benzene 28817-03 <0 50 400 400 41 9 423 ug/L EPA 8260B 9129102 105 106 104 70-130 25 <br /> Toluene 28817-03 <0 50 400 400 429 422 ug/L EPA 8260E 9129102 107 105 186 70-130 25 <br /> Approved By Joel Kill <br /> KIFF ANALYTICAL, LLC I i <br /> 720 Olive Drive, Suite D Davis, CA 95616 530-297-4800 <br /> U <br />