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j SEQUOIA ANALYTICAL 31009-5 <br /> 819 Striker Avenue, Suite 8 • Sacramento, CA 95834 <br /> (916) 921-9600 • FAX (916) 921-0100 <br /> as,.. -^Mrmao a,Ksaaeoaax.yvrrr:«�c�arY^47s >.�""'*c^`�• <br /> RESNA Industries Client Project ID Arco #2168, Stockton A <br /> 3164 Gold Camp Dr. Suite 200 <br /> Rancho Cordova, CA 95670 <br /> 'Attention Jay Johnson u OC Sample Group 2070296-301 N r M Reported Jul 20, 1992 <br /> �i 36��'Co qhs 5.f�v5 ?',d{3ca"�;S h4 v .,.Gk;v`.ense a x� •< Ns"'/S u' c st}F.,.� ,.., �s�m cy.�.;.. �r ..,....,. ..<,...tt n... ,. <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Ethyl- <br /> Benzene Toluene Benzene Xylenes <br /> Method EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Analyst C Chapman C Chapman C Chapman C Chapman <br /> Reporting Units mg/m3 mg/m3 mg/m3 mg/m3 <br /> Date Analyzed Jul 15, 1992 Jul 15, 1992 Jul 15, 1992 Jul 15, 1992 <br /> QC Sample# BLK071592 BLK071592 BLK071592 BLK071592 <br /> Sample Cone.: N D N D N D N D <br /> Spike Cone. <br /> Added: 20 2 0 20 20 <br /> Cone. Matrix <br /> Spike: 18 2 0 1 8 34 <br /> Matrix Spike <br /> %Recovery: 90 100 90 85 <br /> Cone.Matnx <br /> Spike Dup.: 1 8 2 0 1 8 34 <br /> Matnx Spike <br /> Duplicate <br /> %Recovery: 90 100 90 85 <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 <br /> etSEQUOIA ANA�LYTTIIC/ALL/} %Recovery Cone of rut S -Cone of Sample X 100 <br /> Spike Cone Added <br /> Relative%Ufferinx a Cone.of M S -Cone of M S D x 100 <br /> Michael R Giles Cone ae M S + Cone of M S D 1 2 <br /> Laboratory Director <br /> 2070296 RES 3 a <br />