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' 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> Sequoia 404 N Wlget Lane Walnut Creek CA 94598 (9Z5)988-9600 FAX(915)988-9673 <br /> Analytical 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)792-1865 FAX(707)792-0342 <br /> ATC Associates, Inc Client Project ID Thiemann's Service <br /> 1117 Lone Palm Avenue <br /> Modesto, CA 95351-1502 <br /> ' Attention Jeanne Homsey QC Sample Group 9811618-01-05 Reported Nov 16, 1998 <br /> QUALITY CONTROL DATA REPORT <br />' Matrix Solid <br /> Method EPA 8015 <br /> Analyst R GECKLER <br /> ANALYTE Gasoline <br />' QC Batch # GC111198BTEXEXA <br /> Sample No 9811591-1 <br /> Date Prepared 11/11/98 <br /> t Date Analyzed 11/11/98 <br /> Instrument 1 D # GCHP31 <br /> Sample Cone , mg/Kg N D <br />' Cone Spiked, mg/Kg 5 0 <br /> Matrix Spike, mg/Kg 5 6 <br /> % Recovery 112 <br /> Matrix <br /> Spike Duplicate, mg/Kg 5 1 <br /> % Recovery 102 <br />' Relative % Difference 9 3 <br />' RPD Control Limits 0-25 <br /> LCS Batch# OC111198BTEXFXA <br />' Date Prepared 11/11/98 <br /> Date Analyzed 11/11/98 <br />' Instrument 1 D # GCHP31 <br /> Cone Spiked, mg/Kg 5 0 <br />' Recovery, mg/Kg 52 <br /> LCS % Recovery 104 <br /> Percent Recovery Control Limits <br />' M I-CS 760140 <br /> LCS 70 130 <br /> Quality Assurance Statement All standard operating procedures and quality control requirements have been met <br /> Please Note <br /> The LCS is a control sample of known interferent free matrix that is analyzed using the same reagents <br /> SEQUOIA 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 /> the recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br /> PK,y interference the LCS recover is to be used to validate the batch <br /> v yal <br /> P ect Man, r <br />