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233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(5 10) 988 9673 <br /> Analytical 819 ScnkerAvenue Suite 8 Sacramento CA 95834 (916) 92t 9600 FAX(916) 921 0100 <br /> OCT -. 3 <br /> Delta Envtronmentai Consultants Client Project ID Unocal #5886/ Stockton Sampled Sep 25, 1995 <br /> 3164 Gold Camp Or, Ste 200 Sample Matrix Water Received Sep 25, 1995 <br /> Rancho Cordova CA 95670 Analysis Method EPA 5030/8015 Mod /8020 Reported Sep 25, 1995 <br /> ' Attention Eric Holm First Sample # 509-033 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> ' Reporting Sample Sample Sample Sample Sample Sample <br /> Analyte Limit ID ID ID ID ID 10 <br /> erg/L 5509-033 509-036 509-040 509-042 509-043 509-045 <br /> GP-1 W GP 2W GP-3 W GP-4 W GP-5 W GP-6 W <br /> Purgeable <br /> ' Hydrocarbons 50 N D 190 N D NCO N D N D <br /> Benzene 050 N D N D N D N D N D N D <br /> Toluene 050 N D N D N D 0 63 N D N D <br /> Ethyl Benzene 050 N D N D N D N D N D N D <br /> ' Total Xylenes 0 50 N D N <br /> y D ND ND ND ND <br /> Chromatogram Pattern unidentified - <br /> Hydrocarbons <br /> ' >C3 <br /> Quality Control Data <br /> Report Limit Multiplication Factor 10 1 0 10 1 0 1 0 1 0 <br /> ' Date Analyzed 9/25/95 9/25/95 9/25/95 9/25/95 9/25/95 9/25/95 <br /> Instrument Identification ML.2 ML 2 MI-2 ML 2 MI-2 ML 2 <br /> Surrogate Recovery, % 94 84 65 67 66 53 <br /> Purgeable Hydrocarbons are quantitated against a tresh gasoline stanaard <br /> ?,nalvtes reported as N D were not detected above the stated reporting limit <br /> ' <br /> SEQUOIA ANALYTICAL,QUOTA AN LTCA L, #1271 <br /> Ke h L Wimer <br /> Pro' t Manager <br /> z09-033 DDD <br /> rt� <br /> T <br /> 1 �� <br />