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s 0 <br /> I Report Number 37940 <br /> QC Report Matrix Spike/Matrix Spike Duplicate Date 4/2212004 <br /> Project Name Sanchez Property <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 Dur) Sample Sample Analysis Dale Percent Percent Percent Recov Diff <br /> Parameter Sample Value Level Levef Value Value Units Method Analyzed Recov Recov Diff Limit Limit <br /> Benzene 37940-02 <0 50 400 400 426 423 ug/L EPA 8260B 4117104 106 106 0 705 70-130 25 <br /> Toluene 37940-02 <0 50 400 400 385 383 ug/L EPA 8260E 4117104 963 958 0 546 70-130 25 <br /> Tert-Butanol 37940-02 <50 200 200 213 222 ug/L EPA 8260B 4117104 106 111 440 70-130 25 <br /> Methyl-t-Butyl Ether 37940-02 17 400 400 402 405 ug/L EPA 8260E 4117104 96 2 971 0 896 70-130 25 <br /> i <br /> Benzene 37932-06 <0 50 400 400 398 376 ug/L EPA 82606 4118104 995 941 560 70-130 25 <br /> Toluene 37932-06 <0 50 400 400 38 5 36 3 ug/L EPA 8260B 4/18104 96 2 907 593 70-130 25 <br /> Tert-Butanol 37932-06 <5 0 200 200 192 198 ug/L EPA 8260B 4118104 96 1 99 0 298 70-130 25 <br /> Methyl-t-Butyl Ether 37932-06 <0 50 400 400 38 2 36 4 uglL EPA 82606 4118104 955 91 0 4 85 70-130 25 <br /> Benzene 37940-01 <0 50 400 400 444 438 ug/L EPA 82606 4/17104 111 109 1 36 70-130 25 <br /> Toluene 37940-01 <0 50 400 400 423 41 3 ug/L EPA 82606 4/17104 106 103 244 70-130 25 <br /> Tert-Butanol 37940-01 <5 0 200 203 184 189 ug/L EPA 8260B 4117104 92 1 94 6 270 70-130 25 <br /> Methyl-t-Butyl Ether 37940-01 26 400 400 41 2 41 1 ug/L EPA 82606 1/17104 964 96 3 0 110 70-130 25 <br /> Benzene 37936-02 080 400 400 425 41 2 ug/L EPA 8260E 4117104 104 101 306 70-130 25 <br /> Toluene 37936-02 066 400 400 41 5 409 ug/L EPA 82606 4117/04 102 100 148 70-130 25 <br /> Tert-Butanol 37936-02 48 200 200 259 252 ug/L EPA 8260B 4117104 105 102 2 96 70-130 25 <br /> Methyl-t-Butyl Ether 37936-02 49 400 400 456 484 ug/L EPA 8260B 41/17/04 102 109 660 70-130 25 <br /> Benzene 37941-09 <0 50 400 400 386 379 ug/L EPA 82606 4/18104 966 94 6 200 70-130 25 <br /> Toluene 37941-09 <0 50 400 400 391 378 ug/L EPA 82606 4118/04 978 946 332 70-130 25 <br /> ff hJL <br /> KIEF ANALYTICAL, LLC Approved By Jet <br /> 2795 2nd St, Suite 300 Davis, CA 95616 530-297-4800 ` <br />