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I � � � 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> min AAnalytical <br /> # � 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707)792-1$65 FAX(707)792-0342 <br /> • 1551 Industrial Road San Carlos,CA 94070-4111 (650)232-9600 FAX(650)232-9612 <br /> Cambria Client Project ID Shell 341 Main St , Ripon <br /> 1 144 65th St Suite C <br /> Oakland, CA 94608 <br /> Attention Owen Ratchye QC Sample Group 9902E25-08-12 Reported Mar 19, 1999 <br /> QUALITY CONTROL DATA REPORT <br /> Matrix Solid <br /> Method EPA 8015 <br /> Analyst R GECKLER <br /> ANALYTE Gasoline <br /> QC Batch # GC030899BTEXEXA <br /> Sample No 9902E25-9 <br /> Date Prepared 318/99 <br /> Date Analyzed 3/8/99 <br /> Instrument I D # GCHP18 <br /> Sample Cone mg/Kg N D <br /> Cone Spiked mg/Kg 5 0 <br /> Matrix Spike mg/Kg 5 3 <br /> % Recovery 106 <br /> Matrix <br /> Spike Duplicate mg/Kg 5 1 <br /> % Recovery 102 <br /> Relative % Difference 3 8 <br /> RPD Control Limits 0-25 <br /> LCS Batch# GCO30899BTEXEXA <br /> Date Prepared 318199 <br /> Date Analyzed 318199 <br /> 1 Instrument I D # GCHP18 <br /> Cone Spiked, mg/Kg 5 0 <br /> Recovery, mg/Kg 5 5 <br /> LCS % Recovery 110 <br /> Percent Recovery Control Limits <br /> F- <br /> IVISIMSID 60140 <br /> LC$ 70 130 <br /> Quality Assurance Statement All standard operating procedures and quality control requirements have been met <br /> Please Nate <br /> The LCS is a control sample of known interferent free matrix that is analyzed using the same reagents <br /> �EQUOIA ANALYTICAL preparation and analytical methods employed for the samples The matrix spike is an aliquot of sample <br /> fortified with known quantities of specific compounds and subjected to the entire analytical procedure If <br /> I ` the recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br /> 1{ interference the LCS recovery is to be used to validate the batch <br /> Kayvan Klm ai <br /> fProject Manager <br /> F <br />