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• i <br /> SEQUOIA ANALYTICAL RECEIVED AUG 1 3 1992 <br /> 680 Chesapeake Drive • Redwood City,CA 94063 <br /> (415) 364-9600 FAX(415) 364-9233 <br /> RESNA,vrnax» s.YF.}!!w.a,,,,...1.,..,v.....a.,,.,.,.,c•. ~xaeG.,.}N .cN.,.,.,. 'S '. v ,.. v,,,, v,.xs,,.,..,. :u. .,w. .o-?.s,,..�?.,�,..,wv....✓.: ^' a,..,..k <br /> Client Project ID xh„W0148, Stockton Police Sampled Jul 27,1992- <br /> 1710 <br /> 9921710 Main Street Sample Matra Sod Received Jul 29, 1992 <br /> Escalon, CA 95320 Analysis Method EPA 5030/8015/8020 Reported Aug 11, 1992 ' <br /> Attention John Lane First Sample# 207-5055 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample Sample Sample Sample <br /> Analyte Limit ID ID I D. I D <br /> mg/kg 207-5055 207-5056 207-5057 207-5058 <br /> EB-13' NW-'-E WB-11' NW-5 5'-W <br /> Purgeable <br /> Hydrocarbons 10 N D N D N D 1,900 <br /> Benzene 00050 N D N D N D 20 <br /> Toluene 00050 N D 00060 N D 96 <br /> Ethyl Benzene 00050 N D 0 015 N D 35 <br /> Total Xylenes 00050 N D 0 056 N D 170 <br /> Chromatogram Pattern -- Gas -- Gas <br /> Quality Control Data <br /> Report Limit Multiplication Factor 1 0 1 0 1 0 100 <br /> Date Analyzed 8/3/92 8/3/92 8/3/92 8/6/92 <br /> Instrument Identification GCHP-6 GCHP-6 GCHP-6 GCHP-7 <br /> Surrogate Recovery, % 102 98 102 141* <br /> (QC:Limits = 70-130%) <br /> *Coelution confirmed <br /> Purgeable Hydrocarbons are quantitated against a fresh gasoline standard <br /> Analytes reported as N 0 were not detected above the stated reporting limit <br /> SEQUOIA ANALYTICAL_ <br /> (tX-- <br /> i roject Manager 2075055 wAT <1> <br />