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�1 680 Chesapeake Dnve Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> Sequoia 404 N Wiget lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-%73 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(�16)92I-Idt00 <br /> Analytical 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707)792-1865 FAX(707)792-0342 <br /> Cambria Environmental Project EQUILON,420 Kettlemen LN Lodi,CA Sampled 1/22/99 <br /> 270 Perkins Street Project Number N/A Received 1/22/99 <br /> Sonoma, CA 95476 Project Manager Aubrey Cool Reported 1/26,27,28199 <br /> Volatile Organic Compounds-byEPA Method 8260A/Quallty-Control, <br /> Sequoia Analytical-Sacramento <br /> Date Spike Sample QC Reporting Limit Recov RP D <br /> I <br /> Analyte Analyzed Level Result Result Units Recov Limits % Limit <br /> Batch, 9010201 Date Prepared. 1/25199 Extraction Method. EJ!A 5033OB ImeOHI <br /> Rink 9010201-BLK1 <br /> Tert-butyl alcohol 1/25/99 ND mg/kg 100 <br /> Methyl tert-butyl ether ND 0 100 <br /> Di-isopropyl ether ND 0 100 <br /> Ethyl tert-butyl ether ND 0 100 <br /> Tert-amyl methyl ether ND 0 100 <br /> Surrogate 12-DCA-d4 250 247 600-140 988 <br /> U5 291Q2Qj-BSI <br /> Methyl tert-butyl ether 1/25/99 250 257 mg/ka 700-130 103 <br /> Surrogate 1 2-DCA-d4 250 248 600-140 991 <br /> Matrix Spike 9010201-MSI 5901166-01 <br /> Methyl tert-butyl ether 1/25/99 250 ND 265 mg/kg 60 0-140 106 <br /> Surrogate 12-DCA-d4 2.50 2 52 600-140 101 <br /> Matrix Spike Dun 9010201-MSD1 890116641 <br /> Methyl tert-butyl ether 1125/99 250 ND 246 mg/kg 600-140 984 25 0 744 <br /> Surrogate 12-DC4-d4 11 250 246 11 600-140 984 <br /> Batch, 9010282 Date Prepared 1/26/99 Extraction Method, EPA 5030B [MeOHI <br /> Blank 9010282-BLK1 <br /> Tert-butyl alcohol 1/26/99 ND mg/kg 100 <br /> Methyl tert-butyl ether ND 0 100 <br /> Di-isopropyl ether ND 0 100 <br /> Ethyl tent-butyl ether ND 0 100 <br /> Tert-amyl methyl ether ND 0 100 <br /> Surrogate 12-DCA-d4 250 242 600-140 968 <br /> S 9010282-BS1 <br /> Methyl tent-butyl ether 1/26/99 250 258 mg/kg 700-130 103 <br /> Surrogate 1 2-DCA-d4 " 250 256 600-140 102 <br /> Matrix S,p lig 2Q10282-MS1 S901263-14 <br /> Methyl tert-butyl ether 1/26/99 250 0 177 225 mg/kg 600-140 829 <br /> Surrogate 1 2-DC4-d4 " 250 214 600-140 856 <br /> Matnx Spike pun 5901263-14 <br /> Methyl tert-butyl ether 1126199 250 0 177 2 38 mg/kg 600-140 881 250 608 <br /> Sequoia Analytical-Sacramento *Refer to end of report for text of notes and deft <br /> Sandra R Hanson Client Services Representative Page 25 of 27 <br />