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Enviro Chem, Inc <br />1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909)590-5905 Fax (909)590-5907 <br />Gas/BTEX QC <br />Date Analyzed: 10/1920/2022 <br />Units: mq/Kq (PPM) <br />Matrix: Soil/Solid/Slud a/Li uid <br />Matrix Spike (MS)/Matrix Spike Duplicate (MSD) <br />Spiked Sample Lab I.D.: 221019-LCS 1/2 <br />Anal to 1 S. R. spk conc I <br />MS I %REC MSD %REC %RPD ACP %REC ACP %RPD <br />Gasoline Ramie 1 0.00 1 0.500 <br />0.401 j 80% 0.413 839/. 3% 75-125 <20% <br />LCS STD RECOVERY: <br />Anal to spk conc LCS <br />% REC ACP <br />Gasoline Range 0.500 0.400 <br />80%. 75-125 <br />Surrogate Recovery ACP %REC %REC I <br />%REC I %REC %REC I %REC %REC I %REC 1 %REC <br />Sample I.D. MB <br />221012-1 1 221013-1 1 221012-11 1 221012-12 221012-13 221012-14 1 221012-15 <br />BFB 1 70-130 1 120% <br />100% 119% j 121% 125% F 117% 119% 1 121% <br />Surrogate Recovery ACP %REC %REC <br />%REC I %REC I %REC %REC I fuREC IR EC %REC <br />Sample I.D. 1 1221012-16 <br />BFB 1 70-130 1 125% <br />Surrogate Recovery ACP %REC %REC I <br />%REC I %REC I %REC %REC <br />Sample I.D. <br />BFB 1 70-130 <br />* = Surrogate fail due to matrix interference (If marked) <br />S.R. = Sample Result <br />Note: LCS, MS, MSD are in control therefore results are in control. <br />spk conc = Spike Concentration <br />%REC = Percent Recovery <br />ACP %RPD = Acceptable Percent RPD Range <br />ACP %REC = Acceptable Percent Recovery <br />Range <br />Analyzed and Reviewed By: <br />Final Reviewer: <br />