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SEQUOIA ANALYTICAL T <br /> 819 Striker Avenue, Suite 8 • Sacramento, CA 95834 <br /> (916) 921-9600 • FAX (916) 921-0100 <br /> l�!~ShIA l�ndustrierF'A;>x '2hzr^>k r> aar �"axrzxxvc� xczz�xc 4�vx i <br /> s Client Project 10 Arco #2168, Stockton <br /> 3164 Gold Camp Dr, Suite 200 <br /> Rancho Cordova, CA 95670 <br /> Attention David Stavarek OC Sample Group 3010285-308 Reported Jan 26, 1993 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE <br /> Benzene Toluene Ethylbenzene Xylenes <br /> I <br /> Method EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Analyst Chiaravallots Ch,aravallotr Chiaravallotr Chiaravalloti <br /> Reporting Units mg/kg mg/kg mg/kg mg/kg <br /> Date Analyzed Jan 21, 1993 Jan 21 1993 Jan 21 1993 Jan 21, 1993 <br /> QC Sample # 301-0299 301-0299 301-0299 301-0299 <br /> I <br /> Sample Conc: N D N D N D N D <br /> Spike Conc. <br /> Added: 020 020 020 040 <br /> Conc. Matnx <br /> Spike: 0 19 019 020 040 <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 />. SEQUOIA ANALYTICAL %Recovery Me of M -Cone of Smpje x 100 <br /> Spike Conc Added <br /> Relative%Difference Conc of M S -Cone of M S D x 100 <br /> Michael R Gties (Cone of M S + Conc of M S D}/2 <br /> Laboratory Director 3010285 RES <5> <br />