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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 Maria Reid Prep Method 5030 <br /> Batch QC Report <br /> Gas/BTEX Compounds by 8015M/8020 <br /> Laboratory Control Spice(LCSILCSD) Soil QC Batch#2001104/24-01 01 <br /> LCS 2001/04/24-01 01-006 Extracted 04/24/2001 09 52 Analyzed 04/24/2001 09 52 <br /> LCSD 2001/04/24-01 01-007 Extracted 04/24/2001 10 24 Analyzed 04/24/2001 10 24 <br /> Compound Conc [mg/Kg I Exp Conc [mg/Kg] f Recovery(% RPD Ctrt Limits[°/a) Flags <br /> LCS I LCSD LCS- LCSD I LCS i LCSD [30) Recovery RPD LCS I LCSD <br /> Gasoline 0 473 0 461 0 500 0 500 94 61 922 2 6 75-125 35 <br /> Surrogate(s) <br /> 4-9romneuoral7enzs`ne-F3 368 35$ 500 500 7361 71 6 58-124 <br /> • <br /> 1220 Quarry Lane'Pleasanton CA 94566.4756 <br /> Telephone (925)484-1919'Facsimile (925)484-1096 <br /> Printed on 04/26/2001 1124 Page 37 of 42 <br />