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4125/01 <br /> LO AllPOSITIVE <br /> 781 East Washington Blvd., Los Angeles, CA 90021 <br /> i,,. ME F LAB SERVICE (213) 745-5312 FAX (213) 745-6372 <br /> QUALITY CONTROL DATA <br /> i <br /> CLIENT: Orion Environmental, Inc BATCH No: 011148015/8021 <br /> REPORT NO: 20010839 DATE EXTRACTED: 4123101 <br /> h-MATRIX: WATER DATE ANALYZED: 4124101 <br /> METHOD: EPA 8021 B/8015B BTEX QC SAMPLE: 20010839-003 <br /> GAS QC SAMPLE: 20010839-004 <br /> SAMPLE AMT AMT SPK REG <br /> RESULTS SPIKED REC. % ACCEPT <br /> PARAMETER UG/L UGIL UGIL REG RANGE(%) RPD <br /> MTBE S 0 40 41.4 104% <br /> DS 0 40 45.6 114% 72-144 10% <br /> LCS 100 83 83% 61-134 <br /> BENZENE S 0 40 39.2 98% <br /> DS 0 40 34.9 87% 78-130 12% <br /> LCS 100 109 109% 1 73-122 <br /> OLUENE S 0 40 38.4 96% <br /> DS 0 40 34.4 86% 77-131 11% <br /> LCS 100 112 112% 71-121 <br /> ETHYLBENZENE S 0 40 32.9 82% <br /> DS 0 40 29.2 73% 72-137 12% <br /> LCS 100 100 100% 1 71-120 <br /> XYLENES S 0 120 110.0 92% <br /> 1 DS 0 120 98.3 82% 72-138 11% <br /> * M+P XYLENES LCS 200 209 105% 69-120 <br /> 1,0-XYLENE LCS 100 113 113% 69-120 <br /> GASOLINE S 0 910 813.0 89% <br /> DS 0 910 617.0 68% 65-135 27% <br /> w LCS 912 912 <br /> S = Spike <br /> DS = Duplicate Spike <br /> LCS = Laboratory Control Sample <br /> • LCSD = Laboratory Control Sample Duplicate <br /> RPD = Relative Percent Difference <br /> ND = None Detected <br /> Lo <br />