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CHROMALAB, INC. Submission #• 2000-04-0351 <br /> Environmental Services(SOB) <br /> To Wright Environmental Services Inc Test Method 8020 <br /> 8015M <br /> Attn Marla Reid Prep Method 5030 <br /> Batch QC Report <br /> GasBTEX <br /> Laboratory Control Spike (LCS/LCSD) Water QC Batch #2000104126-01 05 <br /> LCS 2000/04126-0105-002 Extracted 04126120001215 Analyzed 04/26/2000 12 15 <br /> LCSD 2000104126-01 05-003 Extracted 04/26/2000 12 47 Analyzed 04/26/2000 12 47 <br /> Compound Conc (ug/L] Exp Conc [ug/L] /Recovery[%] RPI) Ctrl Limas[%] Flags <br /> LCS LCSD LCS LCSD LCS LCSD [%] Recovery RPD LCS LCSD <br /> Gasoline 529 519 500 500 1058 1038 1 9 75-125 20 <br /> Benzene 103 993 1000 1000 1030 993 37 77-123 20 <br /> Toluene 104 977 1000 1000 1040 977 62 78-122 20 <br /> Ethyl benzene 106 101 1000 1000 1060 1010 4 6 70-130 20 <br /> Xylene(s) 306 292 300 300 1020 973 4 7 75-125 20 <br /> Surrogate(s) <br /> Trifluorotoluene 513 465 500 500 1026 930 58-124 <br /> 4-Bromotluorobenzene-Fl 475 471 500 500 95 0 942 50-150 <br /> E <br /> 1220 Quarry Lane"Pleasanton CA 94566-4756 <br /> Telephone (925)484-1919"Facsimile (925)4841096 <br /> Printed on 04/26/2000 15 14 Page 18 of 19 <br />