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C H RQMALAB, INC. Submission P 2000-03-0229 <br /> Environmental Services(SDB) <br /> To Wright Environmental Services Inc Test Method 8015M <br /> 8020 <br /> Attn John Lynch Prep Method 5030 <br /> Batch QC Report <br /> Gas/BTEX (Methanol Extraction) <br /> Laboratory Control Spike (LCS/LCSD) Soil QC Batch#2000103119-05 04 <br /> LCS 2000/03/19-05 04-002 Extracted 03/19/2000 15 54 Analyzed 03/19/2000 15 54 <br /> LCSD 2000/03/19-05 04-003 Extracted 03119/2000 16 31 Analyzed 03/19/2000 16 31 <br /> Compound Conc [mg/Kg] Exp Conc [mg/Kg] Recovery[%] RPD Ctrl Limits[%] Flags <br /> LCS LCSD LCS LCSD LCS LCSD [%) Recovery RPD LCS LCSD <br /> Gasoline 0 652 0 581 0 625 0 625 1043 930 115 75-125 35 <br /> Benzene 0 120 0 113 0 125 0 125 960 904 6 0 77-123 35 <br /> Toluene 0 118 0 113 0 125 0 125 94 4 904 4 3 78-122 35 <br /> Ethyl benzene 0 118 0 113 0 125 0 125 944 904 4 3 70-130 35 <br /> Xylene(s) 0 354 0 338 0 375 0 375 944 901 4 7 75-125 35 <br /> Surrogate(s) <br /> TnBuorotoluene 493 468 500 500 986 936 53-125 <br /> 4-Bromoftuorobenzene-FI 452 414 500 500 90 4 828 58-124 1 <br /> I <br />• 1220 Quarry Lane"Pleasanton,CA 94566-4756 <br /> Telephone (925)484-1919Facsimile (925)4841096 <br /> Printed on 03/23/2000 1146 Page 6 of 7 <br />