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Sequoia <br /> 819 Striker Avenue Suite 8 <br /> J e a u o i Sacramento, CA 95834 <br /> 1 (916)9Z1-9600 <br /> Anal`_ty e a l FAX(916)921-0100 <br /> �Jj i [.a www Sequoialab5 cont <br /> Delta Envtronmerttal Consultants(Cameron Park) Project Arco 6100,Tracy,CA <br /> 3330 Cameron Park Dr Ste 550 Project Number N/A Reported <br /> Cameron Park CA 95682 ProjectManager Jay Johnson 11/29/01 14 47 <br /> Volatile Organic Compounds by EPA Method 8260B - Quality Control <br /> Sequoia Analytical - Sacramento <br /> I <br /> Reporting Spike Source °/oREC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 1110172 -EPA 5030B (PIT) <br /> Blank(1110172-BLKI) Prepared&Analyzed 11/15/01 <br /> Tert-butyl alcohol ND 100 ug/l ------ <br /> Methyl ten-butyl ether ND 1 0 " <br /> Di-isopropyl ether ND 10 " <br /> Ethyl tert-butyl ether ND 10 <br /> Tert-amyl imethy[ether ND to <br /> Ethanol ND 1500 <br /> Surrogate 12-DCA d4 221 250 88 4 60-140 <br /> LCS(1110172-BSI) mm _ Prepared&Analyzed 11/15/01 <br /> Methyl tent-butyl ether 260 1 0 ug/l 250 104 60-140 <br /> rrogate 12-DCA-d4� 235 250 940 60-140 <br /> Atrix Spike(1110172-MSI) Source 5111165-01 Prepared&Analyzed 11/15/01 <br /> Methyl tert-butyl ether 25 1 10 ug/I 250 ND 100 60-140 <br /> Surrogate 12-DCA-d4 -` - --- --- 231 250 924 60-140 ^-- ----_- �- <br /> Matrix Spike Aup(1110172-MSD1) Source 5111165-01 Prepared&Analyzed 11/15/01 <br /> Methyl wrt-butyl ether 26 1 1 0 ug/l. 250 ND 104 60-140 3 91 23 --� <br /> Surrogate 11-DCA-d4 -� �---�- ----__ 237 -�-_ ---- - '-� _ 150 - ----_ 948 _ 60-140 �__--- - - <br /> I <br /> AdIkk <br /> quota Analytical - Sacramento The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document This analytical report must be reproduced to its entirety <br /> Paye 7 of 9 <br />