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STL ChromaLab Submission #: 2001-040459 <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/RTEX Compounds by 8015M/8020 <br /> Laboratory Control Spike(LCSILCSD) Sot[ QC Batch #2001104125-01 01 <br /> LCS 2001104/25-01 01-007 Extracted 04/25/2001 10 32 Analyzed 04/2512001 10 32 <br /> LCSD 2001104125-0101-008 Extracted 04125120011104 Analyzed 04/25/200111 04 <br /> Compound Conn. [mg/Kg] Exp Conc [mg/Kg] lRecovery[T. RPD I Ctrl Limits[%] Flags <br /> LCS LCSD LC5 LCSD LCS LCSD [%] ,Recovery 1RPD LCS I LCSD <br /> Gasoline 0 474 0 445 0 500 0 500 94 8 i 89 0 6 3 75-125 35 <br /> Surrogate(s) <br /> 4-8romofluoroben4fne-FI 365 1354 500 500 7301 708 58-124 <br /> • <br /> 1220 Quart'LanePleasanton,CA 94566-4756 <br /> Telephone (925)4841919*Facsimile (925)4841096 <br /> Printed on 04/26/2001 1124 Page 40 of 42 <br />