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819 Striker A,,Ste 8 <br /> See a()i a Sacrum(916) y-199601) <br /> cFAX(9 )s_1 noot5) , fiwww sequoia; <br /> iln com <br /> r-160- <br /> C,ctticr-Ryan-Petaluma Project I osc.o 11192,StocKton,CA S2122i5 <br /> 1364 N MLDowell Blvd Ste 332 Project Number )`IIA Reported <br /> Petaluma CA 94954 ProleLt Manager Jed Douglas 02/05/03 11 52 <br /> Volatile Organic Compounds by EPA Method 8260B - Quality Conti of <br /> Sequoia Analytical - Sacramento <br /> Reporting Spike Source %REC RPD <br /> analyte Result Limit lints Level Result %REC Limits RPD Limit Nates <br /> Batch 2120257 -EPA 5030B [Pfrl <br /> Blank(2120257-BLK1) Prepared&Analyzed 12/17/02 <br /> Tort-butyl alcohol ND 50 ug/1 <br /> Methyl tert-butyl ether ND 050 " <br /> Di-isopropyl ether ND 050 " <br /> F i hyl tert-butyl ether ND 050 <br /> Tert amyl methyl ether ND 050 " <br /> Flhanol ND 50 " <br /> 1 2-Dichloroethane ND 050 " <br /> 1 2-Dibromoethaue(EDB) ND 050 " <br /> Surrogate 1 2-DCA-d4 242 250 97 60-140 <br /> Laboratory Control Sample(2120257-BSl) Prepared&Analyzed 12/17/02 <br /> Methy]tert-butyl ether 12 9 0 50 ug/! 22 4 58 60-140 l jM-D7 <br /> Surrogate 1 2-DCA-d4 205 H250 82 60-140 <br /> Matrix Splice 2120257-MS1 Source 5212235-05 Prepared 12/17/02 Analyzed 12/18/02 <br /> Mothyl tert-butyl ether 170 0 50 ug/l 224 68 46 60-140 (1M-07 <br /> I <br /> Surrogate 1 2-DCA-d4 233 250 93 60-140 <br /> Matrix Spike Dup(2120257-MSD1) Source S212235-05 Prepared 12/17/02 Analyzed 12/19/02 <br /> Methyl ter(-butyl ether 179 0 50 ug/1 224 68 50 60-140 5 25 (1M-07 <br /> urrogate 1 2-DCA-d4 228 25 0 91 60-140 <br /> Scquola Analyti al- Sacramento 771e results in this report apply to 1he saniples anal) ed in accordance with the chain of <br /> rustod) document Unless orherwi Ye stated results are reported on a wet werght basis <br /> 77ais analytical report must he reproduced in its entirety 0 <br /> Page 12 of 14 <br />