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SEQUOIA ANALYTICAL <br /> 1900 Bates Avenue • Suite LM • Concord California 94520 <br /> (510) 686-9600 FAX (510) 686-9689 <br /> oux`Associaties ry `" Client Projt ct)D— Arco'#2i b`9 ` ;`Stocic[on' ` ` " Sarrlpl Aug i), 199 ; <br /> 1855 Gateway Blvd , Ste 770 Sample Matra Sod Received Aug 20, 1993- <br /> Concord, CA 94520 Analysis Method EPA 5030/8015/8020 Reported Aug 24, 1993 ` <br /> i Attention Paul Supple First Sample# 308-0749 ' <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample Sample Sample Sample Sample Sample <br /> Analyte Limit I D I.D. I D. I D. I D I D <br /> mg/kg 308-0749 308-0750 308-0751 308-0752 308-0753 308-0754 <br /> CS1(A-D) CS2 (A-D) CS3 (A-D) CS4 (A-D) CS5 (A-D) CS6 (A-D) <br /> Purgeable <br /> Hydrocarbons lo 180 700 110 2,000 1,100 370 <br /> 1 <br /> Benzene 0 005 N D N D N D 0 83 N D N D <br /> Toluene 0 005 N D <br /> 17 0077 18 36 056 <br /> Ethyl Benzene 0 005 021 28 013 23 81 20 <br /> Total Xylenes 0 005 10 40 3 3 180 83 19 <br /> Chromatogram Pattern Non Gasoline Non Gasoline Non Gasoline Non Gasoline Non Gasoline Non Gasoline <br /> Mixture Mixture Mixture Mixture Mixture Mixture <br /> (>C8) (>C8) (>C8) (>C8) (>Ca) (>C8) <br /> Cluality Control Data <br /> Report Limit Multiplication Factor 20 50 10 100 100 50 <br /> Date Analyzed 8/23/93 8/23/93 8/23/93 8/23/93 8/23/93 8/23/93 <br /> Instrument Identification HP-4 HP-4 HP-4 HP-4 HP-4 HP-4 <br /> Surrogate Recovery, % 91 87 84 85 84 86 <br /> (OC Limits = 70-130%) <br /> Purgeable Hydrocarbons are quantitated against a fresh gasoline standard <br /> Analytes reported as N D were not detected above the stated reporting limit <br /> SEQUOIA AN YTICAL <br /> Kenneth K F Lee <br /> Laboratory Director <br /> 3080749 ROU <t> <br />