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STL ChromaLab Submission #: 2001-04-0459 <br /> Environmental Services(CA 1094) <br /> �To Wright Environmental Services Inc Test Method 8015M <br /> 8020 <br /> Attn Mana Reid Prep Method 5030 <br /> Batch QC Report <br /> Gas/BTEX Compounds by 8015M/8020 <br /> Laboratory Control Spike(LCSILCSD) Water QC Batch #200110412401 02 <br /> LCS 2001104/24-0102-008 Extracted 04/24/20011115 Analyzed 04/24/2001 11 15 <br /> LCSD 2001104/24-0102-009 Extracted 04/24/2001 11 46 Analyzed 04/24120011146 <br /> Compound Conc [ug/L] Exp Conic [ug/L Recovery[% RPD Ctrl Limits[%] Flags <br /> LCS LCSD LCS LCSD LCS I LCSD I (%] Recovery RPD LCS LCSD <br /> Gasoline 470 454 500 500 9401 9081 35 75-125 20 <br /> Surrogate(s) <br /> Aaromofluwobenzene-FI S09 508 500 500 1018 1016 50-150 <br /> r� <br /> 1� <br /> 1220 Quart'Lane•Pleasanton,CA 94566-4756 <br /> Telephone (925)484-1919'Facsimile (925)484-1096 <br /> Printed on 04/26/2001 11 24 Page 38 of 42 <br /> 1 <br />