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SEQUOIA ANALYTICAL _ _ <br /> 1900 Bates Avenue • Suite LM • Concord, California 94520 <br /> (415) 686-9600 0 FAX (415) 686-9689 <br /> • <br /> z{rynv vnu rnry rt{ <br /> Applied GeoSystems (Sacramento) Client Project ID ARCO #760/#760-91-1 <br /> 4191 E Power Inn Rd <br /> Sacramento, CA 95826 <br /> Attention Eloise Frick OC Sample Group 106-0575 Reported Jun 24, 1991 <br /> }rnri�w GJ4x.42'w`ry r ... nv • • v . • v r u rr <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE <br /> 1,1 DCE TCE CB � <br /> E <br /> Method EPA 8010 EPA 6010 EPA 8010 <br /> Analyst A Futcher A Fulcher A.Futcher <br /> Reporting Units pg/L ire/L ug/L <br /> Date Analyzed Jun 22, 1991 Jun 22, 1991 Jun 22, 1991 <br /> OC Sample# Bunk Blank Blank <br /> Sample Cone • N D N D N D <br />• Spike Cone <br /> Added- 50 50 50 <br /> Cone. Matrix <br /> Spike 42 50 52 <br /> i <br /> Matrix.Spike <br /> % Recovery, 84 100 100 <br /> Cone. Matrix <br /> Spike Dup.: 42 53 52 <br /> Matrix Spike <br /> Duplicate <br /> %Recovery- 84 110 100 <br /> t <br /> Relative <br /> %Difference. 0 58 0 <br /> Quality Assurance Statement All standard operating procedures and quality control requirements have been met <br /> A <br /> SEQUOIA ANAL [CAL %Recovery Cone of M S -Cone of Sample x too <br /> Spike Cone Added <br /> Relative%werenoe Cone of MS -Cone of M S D x 100 <br /> J is R Malerstein (Cone of M S + Cone of M S D) 2 <br /> Pr jest Manager tosos�sAPs �a> <br />