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404 N Wtget Lane 1► <br /> Sequoia Walnut9459$ <br /> 4 (925)988-9f 00 <br /> FAX(925)988-9673 <br /> � Analytical "'wwvuo <br /> Gettler Ryan,Inc -Dublin Project Chevron <br /> 6747 Sierra Court Suite 7 Project Number Chevron#9-8264 Reported <br /> Dublin CA,94568 Project Manager Deanna L Hanhng 01-Sep-00 12 12 <br /> Volatile Organic Compounds by EPA Method 8010B - Quality Control <br /> Sequoia Analytical=Walnut Creek--- <br /> - - Reporting Spike - Source %REC RPD LL <br /> AnalyteResult Lumt Units Level Result °/oREC Lunits RPD Lunt Notes <br /> __ -- - - -- - - <br /> Batch OH23012-EPA 5030B [PIT] <br /> LCS(OH23012-BSI) Prepared&Analyzed 23-Aug-00 <br /> 1,1-Dtrhloroethene 230 10 u9/1 200 115 65-135 <br /> Tnchloroethene 190 10 200 950 70-130 <br /> Chlorobamene 210 10 200 105 70-130 <br /> Surrogate Drbromodifluoronwhane 110 100 110 50-150 <br /> Swrogate 4-Bromolluorobenzene 110 J00 110 50-150 <br /> Matra Spike(01123012-MSI) Source W008304-02 Prepared&Analyzed 24-Aug-00 <br /> 1,1-Dtchlamelhene 200 10 ug/1 200 ND 100 60-140 <br /> Thchloroethem 170 10 " 200 ND 850 60-140 <br /> Chlorobenzane 22 0 10 _ 20 0 ND 110 60-140 <br /> Surrogate Dibromo&fluonomedhane 990 100 990 50-150 <br /> Surrogate 4-Bromojlrrornbu¢ene 110 l Q 0 110 50150 <br /> Match Spike Dup(01123012-MSDl) Source W008304-02 Prepared&Analyzed.24-Aug-00 <br /> 1,1-Dichlaanethene <br /> 230 10 ug/1 200 ND 115 60-140 140 25 <br /> Tnchlam� — - --'170---10--" _ 20 a ND 85 0—6Q-!40 -T 0--- _25--- _ <br /> Chlambeazem 240 10 " 200 ND 120 60-140 870 25 <br /> Surrogate Dibromo&jh-rove ed—w 110 - --— - 100 - - — -110 50-150 - - -- <br /> Smugate 4-Bromo}'htombemene-- -- 11 0-- - - -- 100 - - 110 50-150- <br /> Sequoia <br /> 0-150-Sequoia Analytical-Walaut Creek The results m this report 4pply to the swVks murlyced in ancondmroe with the clean of <br /> custody doeumem.Tins anaiydeal report must be reproduced in its entirety <br /> Page 14 of 20 <br />