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C H RO MALAB, INC. Submission # 200044-0434 <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 (LCSILCSD) Soil QC Batch #200o/a4/27-0104 <br /> LCS 2000104127-0104-002 Extracted 04127120001134 Analyzed 04127120001134 <br /> LCSD 2000104127-01 04-003 Extracted 04/27/2000 18 06 Analyzed 04/27/2000 18 06 <br /> Compound Conc [mg/Kg] I Exp Conc [mg/Kg] (Recovery[%]I RPO Ctrl Limits[%] Flags <br /> LCS I LCSD LCS LCSD LCS I LCSD I (%] Recovery (RPD LCS LCSD <br /> Gasoline 0 383 0 415 0 500 0 500 766 830 80 i 75-125 35 <br /> Benzene 00790 00781 0 1000 0 1000 790 781 1 1 77-123 35 <br /> Toluene 00794 00782 01000 01000 794 782 1 5 78 122 35 <br /> Ethyl benzene 00806 00819 01000 0 1000 806 81 9 1 6 70-130 35 I I <br /> Xylenes) 0 245 0 245 ! 0 300 0 300 ! 8171 817 00 75-125 35 ! <br /> Surrogate(s) I I I <br /> 1 Tnfluorotoluene 396 402 500 500 1 792 80 4 53-125 <br /> E + <br /> 4-Bromofluorobenzene-FI 377 1437 500 I 500 754 87 41 58-124 <br /> 1220 Quarry Lane`Pleasanton CA 94566-4756 <br /> Telephone (925)484-1919`Facsimile (925)464-1096 <br /> Printed on 05/02/2000 11 25 Page 21 of 24 <br />