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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650) 364 %00 FAX(650) 364 9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (925)988-9600 FAX(92 5)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 /> Emcon - Pinnacle Project Arco 2168,Stockton,CA Sampled 1 119198 <br /> 1433 N Market Blvd Project Number 21775-234003 Received 1111019 <br /> Sacramento,CA 95834 Praject Manager Dave Foley Reported 11124199 <br /> Volatile Organic Compounds by EPA Method 8260A/Quality Control <br /> Sequoia Analytical -Sacramento <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> latch. 8110250 DAIe-ErwareI 11120198 Extraction HiWjod, EPA SQ3013 IPITI <br /> Rank 8110250-BLK1 <br /> thanol 11/20/98 ND U911 3000 <br /> Pert-butyl alcohol ND 200 <br /> Aethyl cert-butyl ether ND 2 00 <br />)i-isopropyl ether ND 2 00 <br />:thy]tert-butyl ether ND 2 00 <br /> Iert-amyl methyl ether ND 2 00 <br /> urragate 1 2-DCA-d4 SO 0 51 7 600-140 103 <br /> Jcs 81 I 02.�Q_BS 1 <br /> lethyl tert-butyl ether 11/20/98 500 48 6 ug/l 700-130 972 <br /> urrogate 1 2-DCA-d4 11 500 48 4 600-140 968 <br /> 8110250-M51 S811249-01 <br /> let ert-butyl ether 11/20/98 500 75 1 51 9 ug/] 600-140 NR 3 <br /> urrogate 1 2-DCA-d4 11 500 514 600-140 103 <br /> JaIrix Spike Dup 81 10259-MSD1 $811249-01 <br />[ethyl tert-butyl ether 1 1/20198 500 75 1 116 ug/I 600-140 818 25 0 NR 3 <br />'frrogate 1 2-DCA-d4 Soo 42 0 600-140 84 0 <br /> luoia Analytical -Sacramento *Refer to end of report for text of notes and definitions <br /> nald W Bobel,Client Services Represent94ve Page 8 of 9 <br />