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Submission M200 -07-oaos <br /> STL ChromaLab <br /> Environmental Services(CA 1094) <br />� ,r <br /> To: Wright Environmental Services Inc Test Method: 8021B <br /> Pre Method: .5030 <br /> J Attn: Chris Palmer p <br />{ Batch QC Report <br /> GasBTEX Compounds by 8015M/802T <br /> Laboratory Control Spike(LCS/LCSD) Water QC Batch#2001/07/24-01.03 <br /> LCS: 2001/07/24-01.03-004 Extracted: 07'/24/200108:43 Analyzed 07/24/200108:43 <br /> LCSD: 2001/07/24-01.03-005 Extracted: 07124/200109:14 Analyzed 07/24/200109:14 <br /> Compound Conc. [ug/L] Exp.Cona [ug/L j Recovery 1%] RPD Ctrl.Limits[%] Flags <br /> LCS LCSD LCS LCSD LCS I LCSD 1%) Recovery RPD LCS LCSD <br /> Benzene 89.5 90:9 100:0 100.0 89.5 90:9 1:6 77-123 ° 20 i <br /> ;i <br /> Toluene 85.4 88.3 100.0 100.0 85.4 88.3 3.3 78-122 20 <br /> Ethyl benzene 87.8 92.3 100.0 100.0 87.8 92.3 5.0 70-130 20 <br /> Xyiene(s) 258 270 300 300 86.0 .90.0 4.5 75-125 20 <br /> Surrogates) <br /> Trifluorotoluene 436 434 500. 500 87:2 86.8 58-124 <br /> ( <br /> 4 <br /> J <br /> k <br /> t <br /> 1220 Quarry Lane"Pleasanton,CA 94566.4756 <br /> Telephone:(925)484-1919Facsirrnle:(925)4847096 <br /> Printed on:07126/2001 13:02 Page 17 OT 20 <br />