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{y V A <br /> 1551 Industrial Road <br /> 4 Sequoia San Carlos, CA 94070-4111 <br /> (650)232-9600 <br />�,,,�► Analytical FAX (650)232-9612 <br /> 9 <br /> rettler-Ryan/Geostrategies(1) Project Unocal(1) Sampled 12/13/99 <br /> 747 Sierra Court,Suite D Protect Number Unocal SS#5098 Received 12/14/99 <br /> htblm,CA 94568 Project Manager Scott Polston Reported 12/29/99 <br /> ' Volatile Organae Compounds by EPA Method 8010B/Qual1t3Control <br /> Sequoia Analytical-San Cairlos�_� <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br />,nalyte Analyzed Level Result Result Units Recov Limits % Lttmt % Notes* <br /> Hank(continued) 9120094-BLK3 <br />,2-Dtchloroethane 12/22/99 ND ug(l 0 500 <br />,1-Dichloroethene It <br /> ND 0.500 <br /> is-1,2-Dtchloroethene of ND 0.500 <br />-arts-1,2-Dtchloroethene It ND 0.500 <br />,2-Dichloropropane ND 0 500 <br /> is-1,3-Dichloropropene ND or <br /> 0 500 <br /> rans-l,3-Dichloropropene n ND 0.500 <br /> Itthylene chloride toND 5.00 <br /> - 2-Tetrachloroethane ND 0.500 <br /> etrachloroethene ND 0.500 <br />,1,1-Tnchloroethane ND 0.500 <br />,1,2-Tnchloroethane ND 0 500 <br /> nchloroethene ND 0 500 <br /> nfluoromethane ND 0 500 <br /> 1tn - londe ND 0 500 <br /> urrogate 1-Chloro-1 fluorobenzene 100 795 700-130 795 <br />.CS 9120094-BSI <br />;hlorobenzene 12/20/99 100 882 ug/l 700-130 882 <br />,l-Dtchloroethene 100 962 650-135 962 <br />'richloroethene 100 891 700-130 89 1 <br /> urrogate I-Chloro-2 fluorobenzene 100 106 700-130 106 <br />.CS 9120094-BS2 <br />;hlorobenzene 12/21/99 100 7 11 ug/l 700-130 71 l <br />,1-Dtchloroethene 100 726 650-135 72 6 <br />'nchloroethene It <br /> 100 734 700-130 734 <br /> surrogate 1-Chloro-2fluorobenzene IF100 768 to700-130 768 <br /> ICS 9120094-BS3 <br />:hlorobenzene 12/22/99 100 941 ug/l 700-130 941 <br />,l-Dtchloroethene 100 922 to 650-135 922 <br />[nchloroethene 100 100 70 0-i3^v i00 <br /> surrogate I-Chloro-1 fluorobenzene 100 107 700-130 107 <br /> datrtx Spike 9120094-MSI L912096-17 <br />'hlorobenzene 12/20/99 83 0 ND 63 2 ug/1 600-140 761 <br /> 11-Dtchloroethene 83 0 ND 723 11 600-140 87.1 <br /> Cnchloroethene 83 0 113 168 600-140 663 <br />,urro ate 1-Chloro-1 fluorobenzene 10 0 9 73 700-130 973 <br /> iequota Analytical-San Carlos "`Refer to end of report for text of notes and definitions <br /> Page 28 of 31 <br />