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i <br /> Aft 1 ORANGE COAST ANALYTICAL, INC. <br /> 3002 Dow, Suite 532, Tustin, CA 92680 <br /> (714) 832-0064, Fax (714) 832-0067 <br /> Q C D A T A R E P O R T <br /> Analysis: EPA 8015m / 8020 <br /> Date of Analysis: 12/29/94 <br /> Laboratory Sample No. : 94120848 <br /> Laboratory Reference No. : TOC 5081 <br /> Analyte R1 SP MS MSD PRI PR2 RPD <br /> (ppm) (ppm) (Ppm) (ppm) % % % <br /> Benzene 0. 0 0. 020 0 . 022 0. 022 110 110 0 <br /> Toluene 0. 0 0.020 0. 023 0. 023 115 115 0 <br /> Ethylbenzene 0. 0 0. 020 0.021 0. 021 105 105 0 <br /> Hydrocarbons 0 50 53 52 106 104 2 <br /> --------------------------------------------------------------------------- <br /> R1 Results of First Analysis <br /> SP Spike Concentration Added to Sample <br /> MS Matrix Spike Results <br /> MSD Matrix Spike Duplicate Results <br /> PRI Percent Recovery of MS: { (MS - R1) / SP } X 100 <br /> PR2 Percent Recovery of MSD: l (MSD - R1) / SP } X 100 <br /> RPD Relative Percent Difference: { (MSD - MS) / (MSD + MS) } X 100 X 2 <br /> ORANGE COAST ANALYTICAL <br /> Mark Noorani <br /> Laboratory Director <br />