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i ! • - <br /> Report Number 33488 <br /> 4C Report Matrix Spike/Matrix Spike Duplicate Date 6/12/2003 <br /> Project Name Former Beacon #12419 <br /> Project Number 1419.46 <br /> DuDuplicate Duplicate Spiked <br /> P 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 33488-13 <0 50 398 398 407 408 ug/L. EPA 8260B 618103 102 102 0 342 70-130 25 <br /> Toluene 33488-13 <0 50 398 398 409 403 ug/L EPA 82606 618103 103 101 127 70-130 25 <br /> Tert-Butanol 33488-13 <5 0 199 199 209 199 ug/L EPA 82606 618103 105 100 497 70-130 25 <br /> Methyl-t-Butyl Ether 33488-13 <0 50 398 398 402 402 ug/L EPA 8260B 618103 _-101 101 0 223 70-130 25 <br /> Benzene 33482-14 <0 50 400 400 371 391 ug/L EPA 8260B 616103 92 7 978 541 70-130 25 <br /> Toluene 33482-14 <0 50 400 400 379 405 ug/L EPA 8260B 616103 94 7 101 674 70-130 25 <br /> Tert-Butanol 33482-14 <5 0 200 200 184 198 ug/L EPA 8260B 616103 920 991 747 70-130 25 <br /> Methyl-t-Butyl Ether 33482-14 <0 50 400 400 400 424 ug/L EPA 8260B 616103 100 106 587 70-130 25 <br /> 1 ' <br /> Benzene 33524-01 13 400 400 444 480 ug/L EPA 82606 619103 786 876 108 70-130 25 <br /> Toluene 33524-01 51 400 400 786 853 ug/L EPA 8260B 6/9103 68 2 849 21 8 70-130 25 <br /> Tert-Butanol 33524-01 <5 0 200 200 175 189 ug/L EPA 82606 6/9103 873 945 788 70-130 25 <br /> Methyl-t-Butyl Ether 33524-01 <0 50 400 400 38 3 421 ug/L EPA 8260B 619103 958 105 935 70-130 25 <br /> Benzene 33507-05 <0 50 400 400 378 373 ug/L EPA 8260B 616103 94 6 934 1 36 70-130 25 <br /> Toluene 33507-05 <0 50 400 400 41 7 387 ug/L EPA 82606 616103 104 966 747 70-130 25 <br /> Tert-Butanol 33507-05 <5 0 200 200 201 197 ug/L EPA 82606 616/03 100 98 7 1 90 70-130 25 <br /> Methyl-t-Butyl Ether 33507-05 <0 50 400 400 38 1 41 0 ug/L EPA 8260E 616/03 952 102 743 70-130 25 <br /> Benzene 33522-06 <0 50 400 400 392 382 ug/L EPA 8260B 6/9103 979 955 248 70-130 25 <br /> Toluene 33522-06 <0 50 400 400 424 41 0 ug/L EPA 82606 619103 106 103 324 70-130 25 <br /> KIFF ANALYTICAL, LLC <br /> Approved By J I Kiff <br /> 2795 2nd St, Suite 300 Davis, CA 95616 530-297-4800 <br />