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r <br /> t <br /> SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive - Redwood City, CA 94063 <br /> (415) 364-9600 FAX(415) 364-9233 <br /> PRESNA Client Project ID W0376 00, Chevron Stockton Sampled Aug 23, 1993 <br /> 1710 Main Street Sample Matrix Water Received Aug 25, 1993 <br /> Escalon, CA 95320 Analysis Method EPA 5030/8015/8020 Reported Sep 7, 1993 <br /> ' Attention John LaneFirst Sample# 3HD3601 Y <br /> r r � <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> ' Reporting Sample Sample Sample Sample <br /> Analyte Limit I D I D 1 D. I D <br /> ' dig/L 3HD3601 3HD3602 3HD3603 3HD3604 <br /> CS MW-1 CS MW-2 CS MW-3 CS TB-1 <br /> ' Purgeable <br /> Hydrocarbons 50 55 N D N D N D <br /> ' Benzene 050 N D N D N D N D <br /> Toluene 050 N D N D N D N D <br /> Ethyl Benzene 050 N D N D N D N D <br /> Total Xylenes 050 N D N D N D N D <br /> Chromatogram Pattern Discrete - - -- <br /> Peak <br /> Quality Control Data <br /> Report Limit Multiplication Factor 1 0 10 10 10 <br /> Date Analyzed 9/1/93 9/1/93 9/1/93 9/1/93 <br /> Instrument Identification GCHP-3 GCHP-2 GCHP-3 GCHP-2 <br /> ' Surrogate Recovery, % 143* 130 125 126 <br /> (OC Limits = 70-130%) <br /> *Coelution confirmed <br /> ' Purgeable Hydrocarbons are quantitated against a fresh gasoline standard <br /> Analytes reported as N D were not detected above the stated reporting ILmit <br /> SEANALYTIC <br /> 7�,OX <br /> ickie Tague <br /> Project Manager 13HD3601 WAT <2> <br />