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j SEQUOIA ANALYTICAL r u <br /> 819 Striker Avenue, Suite 8 • Sacramento, CA 95834 <br /> (916) 921.9600 • FAX (916) 921-0100 <br /> ect # 1 fib, t on <br /> 43164 Gold Camp Dr.,Suite 200 <br /> Rancho Cordova, CA 95670 <br /> Attention- David Stavarek CC Sample Group• 3010285-308 Reported: Jan 26, 1993 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE <br /> Benzene Toluene Eth benzene Xylenes <br /> Method EPA 8020 EPA 9020 EPA 8020 EPA 8020 <br /> Analyst Chiaravallob Chiaravallob Chiaravallob Chiaravallou <br /> Reporting Units- mg/kg mg/kg mg/kg mg/kg <br /> Date Analyzed Jan 21, 1993 Jan 21 1993 Jan 21, 1993 .tan 21, 1993 <br /> QC Sample # 301-0299 301-0299 301-0299 301.0299 <br /> Sample Conc.: N D N D N O N D <br /> Spike Conc. <br /> Added: 020 020 020 040 <br /> Conc. Matrix <br /> Spike: 019 019 020 040 <br /> Matrix Spike <br /> % Recovery: 95 95 100 100 <br /> Conc. Matrix <br /> Spike Dup.: 019 019 020 020 <br /> Matrix Spike <br /> Duplicate <br /> %Recovery: 95 95 100 100 <br /> Relative <br /> % Difference: 00 00 00 00 <br /> Quality Assurance Statement All standard operating procedures and quality control requirements have been met <br /> SEOUOIA ANALYTICAL Cone of M of sample x 100 <br /> 01 Spite C4= Added <br /> LAG Relative%Werence Cone of M S -Cone,of M S D x 100 <br /> Michael R. Gies (Cone of M +Conc of M S n)/2 <br /> Laboratory Director 30102ss M <s> <br />