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Sequoia 819 Striker Avenue Suite 8 <br /> Sacramento CA 95834 <br /> (916)921-9600 <br /> Analytical <br /> FAx(916)9z 1-0 100 <br /> oia-Petaluma Project N/A Sampled 2/l/99 to 2/2/99 <br /> 55 N McDowell Blvd,Ste D Project Number (WO#P902106) Received 2/11/99 <br /> etaluma,CA 94954 Project Manager Matt Sakai Reported 2/18/99 <br /> Volatile Organic Compounds by EPA Method 8260A <br /> Sequoia Analytical-Sacramento <br /> Batch Date Date Surrogate Reporting <br /> knalyte Number Prepared Analyzed Limits Limit Result Units Notes* <br /> P902106-06/S-30-B1 S902162-01 mil <br /> lert-butyl alcohol 9020156 2111/99 2111/99 100 ND mg/kg <br /> Methyl tert-butyl ether 0 100 ND <br /> Wi-isopropyl ether 0 100 ND <br /> thyl tert-butyl ether 0 100 ND <br /> ert-amvl methyl ether 0 100 ND <br /> Surrogate 1,2-DCA-d4 " 600-140 118 % <br /> 1902106-09/5-45-B1 5902162-02 &W <br />(,hy, <br /> rt-butyl alcohol 9020156 2/11/99 2111/99 too ND mg/kg <br /> tert-butyl ether 0 100 ND " <br /> isopropyl ether 0 100 ND <br /> Ethyl tert-butyl ether 0 100 ND " <br /> ert-amyl methyl ether 0 100 ND " <br /> ogate 1,2-DCA-d4 600-140 101 % <br /> 590,1,162-03 SAW <br /> fert-butyl alcohol 9020156 2/11/99 2/11/99 100 ND mg/kg <br /> Methyl tert-butyl ether 0 l00 ND " <br /> i-isopropyl ether 0 100 ND <br /> thyl tert-butyl ether 0 100 ND " <br /> Tert-amyl methyl ether 0 100 ND " <br /> trrogate 1 2-DCA-d4 600-140 100 % <br /> - - S202162-04 SAW <br /> rt-butyl alcohol 9020156 2111199 2/11199 100 ND mg/kg <br /> ethyl tent-butyl ether 0 100 ND " <br /> Di-isopropyl ether 0 100 ND " <br /> ithyl tert-butyl ether 0 100 ND " <br /> ert-arnyl methyl ether _ 0 100 ND " <br /> trrogate 12-DCA-d4 600-140 107 % <br /> 1 S902162-05 SJW <br /> 4ert-butyl alcohol 9020156 2/11/99 2/11/99 100 ND mg/kg <br /> thylethyl Cert-butyl ether " 0 100 ND " <br /> -isopropyl ether_ 0 100 ND <br /> tert-butyl ether 0 100 ND " <br /> oia Analytical-Sacramento ' *Refer to end of report for text of notes and definitrons <br /> onald W Bobel,Client Services Rc�resentattve page 2 of 8 <br />