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404 N W Set lane <br /> Se' uoia Walnut Creek,CA 94598 <br /> _- A --- T __ T - - - ^fTT (925)_9.88-9600 <br /> 1 naly`ical FAX(925)988-9673 <br /> Gettler Ryan,Inc -Dublin Protect Unocal <br /> 6747 Sierra Court Suite 7 Project Number Unocal# 5886 Reported <br /> _Dublin CA,94568 _ ___ _ _Pro)ect Manager Deanna L Harding 36-Dec-99 09 O1 <br /> Volatile Organic Compounds by EPA Method 8260A - Quality Control <br /> Sequoia Analytical -Walnut Creek <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 9LI4011 Pi epared 09-Dec-99 ❑sing EPA 5030B [PIT} <br /> Blank(9L14011-BLK1) <br /> Ethanol ND 500 ug11 <br /> tett-Butyl alwhol ND 100 " <br /> Methyl Cert-butyl ether ND 20 <br /> Dt-isopropyl ether ND 20 " <br /> Ethyl tort-butyl ether ND 20 <br /> tent-Amyl methyl ether ND 20 <br /> Surrogate Dibromofluoromethane 580 „ 500 116 50-150 <br /> Surrogate 1 2-Dichloroethane-d4 520 500 104 50-150 <br /> LCS(9L14011-BSI) <br /> Methyl tett butyl ether 588 2 0 ug/l 50 0 11$ 70-130 <br /> Surrogate Dibron:ofluoromethane 550 50 0 110 50-150 <br /> Surrogate 12-D+chloroethane-d4 480 500 <br /> 96 0 SD-I50 <br /> Matrix Spike(91L14011-14SI) Source W912007-11 <br /> Methyl tert butyl ether 533 20 ug/1 500 ND 107 60-150 <br /> Surrogate Dibromofluoromethane 620 - 500 114 50-150 <br /> Surrogate 1 2-Dtchloroelhane-d4 <br /> 580 500 116 50-150 <br /> Matrix Spike Dup (9L14011-MSD1) Source W912007-11 <br /> Methyl tent-butyl ether 581 20 ug/l 500 ND 116 60-150 862 25 <br /> Surrogate Dtbromofluoromethane 600 " 500 120 50-150 <br /> Surrogate 1 2-Dichloroethane-d4 560 500 111 50-150 <br /> he ci=nof <br /> Sequoia Analytical-Walnut Creek The results custodydocumentForyTks atothcnalytical rePorl must becre rod ced ordwice with itis entirely <br /> page 26 of 27 <br /> u anile eg ey, reject anag� <br />