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SEQUOIA ANAL <br /> (415)Chesapeake680 City, CA <br /> (415) 364-96Q0 FAX (415) 364-9233 V M1 <br /> REST A Client Project ID W0294 00, Laidlaw k. Analyst h R Lister <br /> 1710 Main Street EPA Method EPA 8015 <br /> `Escalon, CA 95320 Units pg/L Analyzed May 12, 1993 <br /> Attention John Lane OC Sample Group 3E32801 Reported May 19, 1993 <br /> HYDROCARBON QUALITY CONTROL DATA REPORT <br /> ACCURACY ASSESMIENT PRECISION ASSESSMENT <br /> Laboratory Control Sample Sample Duplicate <br /> ANALYTE Gasoline ANALYTE Volatile <br /> Hydrocarbons <br /> Spike Conc. Sample <br /> Added: 100 Number: 305-MO <br /> Spike Result 96 Original <br /> Result: 15 <br /> o� <br /> Recovery: 96 Duplicate <br /> Result: 15 <br /> Upper Control <br /> Limit%: 120 Relative % <br /> Difference: Relative Percent Difference values are not <br /> reported at sample concentration levels <br /> Lower Control less than 10 times the Detection Limit <br /> Limit%: 80 <br /> Maximum <br /> RDP: 20 <br /> E OIA ANALYTICA %Recovery Conc of M S -Conc of Sample x 100 <br /> Spike Conc Added <br /> Relative%Difference Conc of M S -Conc of M S D x 100 <br /> g e (Conc of M S + Conc of M 5 D)/2 <br /> r ect 3E32801 WAT 43> <br />