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Submllssion # 2000-04-0434 <br /> C H RO MALAB, INC. <br /> Environmental Services(SDB) <br /> To Wright Environmental Services Inc Test Method 8020 <br /> 8015M <br /> Attn Chris Palmer Prep Method 5030 <br /> Batch QC Report <br /> Gas/BTEX <br /> Laboratory Control Spike (LCS/LCSD) Soil QC Batch # 2000104126-01 02 <br /> LCS 2000104126-01 02-002 Extracted 04/26/2000 10 59 Analyzed 04/26/2000 10 59 <br /> LCSD 2000104126-0102-003 Extracted 04126120001130 Analyzed 04126120001130 <br /> Compound Conc [rng/Kg] Exp Conc [mg/Kg] !Recovery[% RPD Ctrl Limits[%] Flags <br /> LCS LCSD LCS LCSD LCS I LCSD [%I Recovery j RPD LCS LCSD <br /> Gasoline 0 434 0 415 0 500 0 500 86 8 830 45 75-125 35 1 <br /> Benzene 0 103 100813 0 1000 1111,00 103 0 1113 23 5 77-123 35 <br /> Toluene 00992 00828 01000 0 1000 99 21 828 180 78-122 35 <br /> Ethyl benzene 00954 00823 0 1000 0 1000 9541 823 14 7 70-130 35 <br /> i <br /> Xylene(s) 0 283 0 247 0 300 0 300 94 3 823 136 75-125 35 <br /> Surrogate(s) I <br /> Tnfluorotoluene 490 � 360 S00 500 9801 72 0 53-125 <br /> 4-Bromofluarobenzene-Fl 467 424 500 500 1 934 84 8 58-124 <br /> i <br />• <br /> 1220 Quarry LanePleasanton CA 94566-4756 <br /> Telephone (925)464-1919*Facsimile (925)484-1096 <br /> Printed on 05/02/2000 1125 Page 20 of 24 <br />