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SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive • Redwood City, CA 94063 <br /> (415) 364-9600 - FAX (415) 364-9233 <br />' RESNA Client Project ID F7120 93, Quick Stop Stockton Sampled May 3, 1993 <br /> 3315 Almaden Expwy ,, Suite 34 Sample Matrix Water Received May 4 1993 <br /> San Jose, CA 95118 Analysis Method EPA 5030/8015/8020 Reported May 16, 1993 <br />' Attention Rich Garlow First Sample # 3E19501 <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/L 3E19501 3E19502 3E19503 3E19504 <br /> BB1 MW1 MW2 MW3 <br />' Purgeable <br /> Hydrocarbons 50 N D N D N D N D <br />' Benzene 0 50 N D N D N D N D <br /> Toluene 050 N D N D N D N D <br /> Ethyl Benzene 0 50 N D N D N D N D <br /> Total Xylenes 050 N D N D N D N D <br /> Chromatogram Pattern -- <br /> Quality Contra! Data <br />' Report Limit Multiplication Factor 10 10 1 0 10 <br /> Date Analyzed 5/12/93 5/12/93 5/12/93 5/12/93 <br /> Instrument Identification HP-2 HP-2 HP-2 HP-5 <br />' Surrogate Recovery, % 101 99 102 111 <br /> (QC 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 /> 6 SEQUOIA ANALYTICAL <br /> j <br /> Vickie Tag 3E19501 RES <1> <br /> Project Manager <br /> 1 <br />