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Sequoia <br />680 Chesapeake Drive <br />404 N Wiget Lane <br />Redwood City CA 94063 (650) 364-9600 <br />walnut Creek CA 94598 (925) 988-9600 <br />FAX (650) 364-9233 <br />FAX (925) 988-%73 <br />Analytical <br />er-Ryan - bublin <br />*47 <br />819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921-9600 <br />1455 McDowell Blvd North Ste D Petaluma CA 94954 — , (707) 792-1865 <br />Client project I0 Chevron #9-577'5, Lodi Sampled <br />FAX (916) 921-0100 <br />FAX (707) 792-0342 <br />Feb 3, 1999 <br />Sierra Court, Suite J <br />Dublin, CA 94568 <br />Sample Matnx <br />Analysis Method <br />Water .,- i Relogged <br />EPA 5030/8015 Mod /8024 _ _ Z- Reported <br />Feb 17, 1999 <br />Feb 24, 1999 <br />Attention Barbara Sieminski First Sample # 902-0622 <br />Nag <br />TOTAL PURGEABLE PETROLEUM HYDROCARBON&WithL6TD( MTBE <br />3,100 <br />Reporting <br />Sample <br />Sample Sample Sample Sample <br />N D <br />Analyte Limit <br />I D <br />I.D. I D I D LD <br />6,800 <br />pg/L <br />902-0622 <br />902-0623 902-0624 902-0625 902-0626 <br />N D <br />N D <br />TB -LB <br />MW -2 MW -1 MW -3 MW -4 <br />Ethyl Benzene <br />Purgeable <br />10 <br />10 <br />200 <br />10 <br />10 <br />Date Analyzed <br />Hydrocarbons <br />50 <br />N D <br />N D <br />N D <br />3,100 <br />11,000 <br />Benzene <br />050 <br />N D <br />N D <br />1,400 <br />3,100 <br />6,800 <br />Toluene <br />050 <br />N D <br />N D <br />N D <br />N D <br />29 <br />Ethyl Benzene <br />0 50 <br />N D <br />N D <br />N D <br />N D <br />15 <br />atal Xylenes <br />0 50 <br />N D <br />N D <br />810 <br />100 <br />500 <br />MTBE <br />25 <br />N D <br />N D <br />67,000 <br />170 <br />1,200 <br />Chromatogram Pattern -- _. Gasoline Gasoline <br />uuaiity L:ontroi uata <br />Report Limit Multiplication Factor <br />10 <br />10 <br />200 <br />10 <br />10 <br />Date Analyzed <br />2/17/99 <br />2/17/99 <br />2/17/99 <br />2/17/99 <br />2/17/99 <br />Instrument Identification <br />HP -2 <br />HP -2 <br />HP -2 <br />HP -2 <br />HP -2 <br />Surrogate Recovery, % <br />105 <br />100 <br />109 <br />147 * <br />151 <br />(DC Llmrts = 70-130°/x) <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 ANALYTICAL, #1271 <br />i�vt <br />lianne Fegiey <br />P <br />roject Manager <br />Please Note <br />" Surrogate recovery above control limit due to coelution <br />902-0622 GET < 1 > <br />