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q . <br /> Sequoia 819 Striker Avenue, Suite 8 <br /> Sacramento CA 95834 <br /> (916)921-9100 <br /> Iwo Analytical <br /> FAX(9I6)921-0104 <br /> 0 + <br /> EMCON-Sac Project ARCO 2130,Stockton,CA Sampled 6/4/99 to 6/6/99 <br /> 1433 N Market Blvd Project Number 21775-229 004 Received 6/7/99 <br /> Sacramento,CA 95834 Project Manager Dave Foley Reported 6/27/99 <br /> Volatile Oxygenate Compounds by EPA Method 8260A/Quality Control <br /> Sequoia Analytical-Sacramento <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> LAnalyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> flatch 9060247 Date Prepared 6117199 Extraction Methad. ,F,PA 5030B [PIT] <br /> Blank 9040247-BLK1 <br /> Tert-butyl alcohol 6117199 ND ug/I 200 <br /> Methyl tert-butyl ether ND 200 <br /> Di-isopropyl ether ND 200 <br /> Ethyl tert-butyl ether ND 200 <br /> Tert-amyl methyl ether ND 200 <br /> Ethanol ND 3000 <br /> Surrogate 1 2-DCA-d4 Soo 530 600-140 106 <br /> LCS 9060247-BSI <br /> Methyl tert-butyl ether 6/17199 500 61 8 ug/l 700-130 124 <br /> Surrogate 1 2-DCA-d4 1150 0 546 600-140 109 <br /> Dup 9060247-BSDI <br /> hyl <br /> --butyl ether 6/17/99 500 596 ug/I 700-130 119 25 0 412 <br /> rrogat. 1 2-DCA-d4 500 51 4 600-140 103 <br /> Matrix5nike 9060247-MSI S906224-05 <br /> Methyl tert-butyl ether 6/17/99 Soo 548 672 ug/l 600-140 123 <br /> Surrogate 1 2-DCA-d4 500 576 600-140 115 <br /> Matrix Spike Dun 9060247-MSD1 5906224-05 <br /> Methyl tert-butyl ether 6/17/99 500 548 63 8 ug/l 600-140 117 25 0 500 <br /> Surrogate 1,2-DCA-d4 11 50 0 548 11600-140 110 <br /> Batoh. 9060248 Date Prepared, 6/15199 Extrarttan Method. EPA 5030E [Pill <br /> Blank 9060248-BLKI <br /> Tert-butyl alcohol 6115199 ND ug/l 200 <br /> Methyl tert-butyl ether ND 200 <br /> Di-isopropyl ether ND 200 <br /> Ethyl tert-butyl ether ND 200 <br /> Tert-amyl methyl ether ND 200 <br /> Ethanol ND 3000 <br /> Surrogate 1 2-DCA-d4 500 494 600-140 988 <br /> LCS 9060248-BSI <br /> Methyl ter(-butyl ether 6/15/99 500 590 ug/I 700-130 118 <br /> Surrogate 1 2-DCA-d4 1150 0 488 600-140 976 <br /> LCS Dua 9060248-BSDI <br /> thy/tert-butyl ether 6115/99 50 0 564 ug/1 700-130 113 25 0 4 33 <br /> 'TTuoia Analytical-Sacramento *Refer to end of report for text of notes and definitions <br /> Page 9 of I 1 <br />