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SEQUOIA ANALYTICAL <br /> 1900 Bates Avenue • Suite LM • Concord,California 94520 <br /> (510) 686-9600 FAX (510) 686-9689 <br /> n�K+�+� Y .,x .,. L r a . f+nud, } r v. v r r• q„ rc + r{h Srq r+vEn rvvk yr .r �x x v� r r:b ry Y <br /> yUX AsSOCiates Cl1ent*61 ect IIiw n ~A lu ,1Q4 Suu nw v �W 6. W <br /> v "Ar`co#21St-9S- , Stockton Samiiled ' }FAug�5;�1"99 <br /> 1855 Gateway Blvd , Ste 770 Sample Matnx Sod Received Aug 20, 1993 t <br /> Concord, CA 94520 Analysis Method EPA 5030/8015/8020 Reported Aug 24, 1993' <br /> t Attention Paul Supple Fust Sample# 308-0755 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> iReporting Sample Sample Sample <br /> Analyte Limit 1.10 I.D I.D. <br /> mg/kg 308-0755 308-0756 308-0757 <br /> CS7 (A-D) CS8 (A-D) CS9(A-D) <br /> Purgeable <br />' Hydrocarbons 10 24 790 B00 <br /> Benzene 0 005 N D N D N D <br /> Toluene 0 005 N D 42 33 <br /> Ethyl Benzene 0 005 N D 6 4 5 7 <br /> Wotal Xylenes 0 005 00051 55 51 <br /> Chromatogram Pattern Non Gasoline Non Gasoline Non Gasoline <br /> Mixture Mixture Mixture <br /> (>C10) (>C8) (>C8) <br /> Quality Control Data <br /> Report Limit Multiplication Factor 1 0 50 50 <br /> Date Analyzed 8/23/93 8/23/93 8/23/93 <br /> Instrument Identification HP-4 HP-4 HP-4 <br /> Surrogate Recovery, % 95 82 80 <br /> (OC Limits = 70-130%) <br /> turgeable Hydrocarbons are quantitated against a fresh gasoline standard <br /> Analytes reported as N C were not detected above the stated reporting limit <br /> IVE(QUOIA2 A ICAL <br /> Kenneth K F Lee <br />,Laboratory Director <br /> 3080749 ROU [2> <br />