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` SEQUOIA ANALYTI9CAL
<br /> 680 Chesapeake Dnve - Redwood City,
<br /> (415) 364-9600 FAX(415) 364-9233
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<br /> RESlVA Client Proleci iD. 1500Q8 01, Hencirax Trucking Analyst R Laster
<br /> 1710 Main Street EPA Method EPA 8015
<br /> `Escalon, CA 95320 Units. Ng/L Analyzed May 19, 1993''
<br /> Attention John Lane OC Sample Group. 3E39401-3 Reported- May 24, 1993
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<br />' HYDROCARBON QUALITY CONTROL DATA REPORT
<br /> ACCURACY ASSESMENT PRECISION ASSESSMENT
<br /> Laboratory Control Sample Sample Duplicate
<br /> ANALYTE Gasoline ANALYTE --Volatile
<br /> Hydrocarbons
<br />' Spike Conc. Sample
<br /> Added: 100 Number: 305.0720
<br />' Spike Result: 98 Original
<br /> Result: ND
<br /> o�
<br />' Recovery: 98 Duplicate
<br /> Result: N.D.
<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 /> 1
<br /> EQUOIA ANALYTICAL %Recovery Conc of M S -Conc of Sample x 100
<br /> Spike Conc Added
<br /> Relative%Dfferenoe Cane of MS -Conc of M S D x 100
<br /> Vickie Tag (Conc of M S + Conc of M S D)/2
<br /> Project Manager 3E39401 WAT <3>
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