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Sequoia Q. 819 Striker Avenue,Suite 8 <br /> ` ''� Sacramento.CA 95834 <br /> Analytical (916)921-9600 <br /> FAX(916)921-0100 <br /> EMCON-Cameron Park Project: ARCO 2186,Stockton,CA <br /> 3939 Cambridge Rd. Suite 200 Sampled: 6/21/99 <br /> g Project Number: 2]775-237-002 Received: 6/21/99 <br /> Cameron Park,CA 95682 Project Manager; Mark Cap s <br /> Reported: 6129199 <br /> Volatile Oxygenate Compounds by EPA Method 8260A <br /> Sequoia Analytical-Sacramento <br /> Batch Date Date Surrogate Reporting <br /> Anal to Number Prepared Analyzed Limits <br /> Limit Result Units Notes* <br /> S21A D 5906330-01 5411 <br /> Tert-butyl alcohol 9060309 6/21/99 6/22/99 10.0 ND mg/kg <br /> Methyl tert-butyl ether 6/21/99 . 0.I00 0.424 <br /> Di-isopropyl-ether 0.]00 NB <br /> Ethyl tert-butyl ether 0.100 ND <br /> Tert-amyl methyl ether 0.100 ND <br /> Ethanol „ <br /> Surrogate: 1,2-DCA-d4150 ND " <br /> 60.0-140 85.2 <br /> SP1E�i 59�.Q-02 mil <br /> Tert-butyl alcohol 9060309 6/21/99 6/22/99 10,0 ND mg/kg <br /> Methyl tert-butyl ether <br /> Di-iso ropy l ether 0.100 0.930 " <br /> p " <br /> Ethyl tort-butyl ether 0.100 ND <br /> Teri-amyl methyl ether 0.100 ND " <br /> Ethanol <br /> 0.100 ND " <br /> 150 ND " <br /> Surrogate.• 1,.2-DCA-d4 ". 60.0-I40 <br /> 86.8 <br /> Te�rt-fib tyl alcohol4i1 <br /> 9060309 6/21/99 6/22/99 10.0 ND mg/kg <br /> Methyl tort-butyl ether <br /> Di-isopropyl ether 0.100 0.574 <br /> ND <br /> Ethyl tort-butyl ether �� �� 0.100 <br /> Tert-amyl methyl ether „ 0.100 ND <br /> 0.100 ND <br /> Ethanol.! „ „ <br /> Surrogate: <br /> 150 ND " <br /> 1,2-DCA-d4 � 60.0-14087.6 % <br /> Te -butyl alcohol S2Q6330-04 <br /> 9060309 6/21/99 6/22/99 10.0 ND mg/kg <br /> Methyl tert-butyl ether <br /> Di-isopropyl ether 0.100 0.439 " <br /> Ethyl tert-butyl ether .0.100 ND <br /> " <br /> Tort-am0.100 NDyl methyl ether 0..!00 ND <br /> Ethanol " <br /> Surrogate: I,2-DCA-d4 150 ND " <br /> " 60.0-140 84.4 <br /> �� 590633,0 SQ.iI <br /> Tort-butyl alcohol 9060309 6/21/99 6/22/99 <br /> Methyl tert-butyl ether 10.0 ND mg/kg <br /> Di-isopropyl ether „ <br /> 0.100 1.16 <br /> Ethyl tert-butyl ether 0.100 ND " <br /> Ter(-amyl methyl ether ' 0.100 ND " <br /> 0.100 ND " <br /> Sequoia Analytical-Sacramento <br /> *Refer to end of report for text of notes and de/iattions. <br /> PaLC 3 of S <br />