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1551 IndustrW Road <br /> Sequoia �'�'°��C'0407 "' <br /> (650)232-9600 <br /> FAX(650)232A6i2 <br /> Analytical www-seq`iOLiLabs`°moi <br /> iettla-Ryan/Geostrategies(1) Project Tosoo(5) Sampled. 5/10100 to 5/11100 <br /> 1747 Sierra Court,Suite D Project Number Unocal SS#5886 Remve& 5111/00 <br /> Dublin,CA 94568 Pro ect Mwmgw Deanna Harximig Rqxwbei 6/1/00 <br /> Date Spike Sample QC Reporting Limit Reoov RPD RPD <br /> Anal Level Re h Result Units Recov Limits % Lamit % Notes* <br /> datrix Spike(continngD 0050101-MS1 1&0510145 <br /> Kylenes(total) 5/23/00 300 ND 304 ugA 600-140 101 <br /> ;arrogate. aaa-T rlfluorwoluene " 100 101 or 700-130 101 <br /> Watriz Spike Dan 0050101-MSDI L005101-OS <br /> 3enzene 5123100 100 ND 101 ug/l 600-140 101 250 2.93 <br /> Coluene 100 ND 946 n600-140 94A 250 1.8$ <br /> 3&ylbmzene " 100 ND 950 w 600-140 95.0 250 4.12 <br /> Kylenes(total) 300 ND 290 600-140 96.7 250 4.35 <br /> surrogate aaa-T?Ifluorotoluene 100 976 " 700-130 976 <br /> Batch: 0050102 Date Prepared. 5/23/00 ExUadfan Method: ]EPA 5030B frM <br /> Blank 0050102-BLK1 <br /> *,eable Hydrocarbons as Gasoline 512.3/00 ND ugn 50.0 <br /> 0.500 <br /> c " ND " O-W <br /> 3thylbeazeoe " ND " 0.500 <br /> Kylarm(total) " ND " O.sw <br /> wlethyl tat ether " ND " 5.00 <br /> 4urrogate aa,a-Trrfluorotoluene 100 964 700-130 964 <br /> (Q 0050102- <br /> 3enzene 5/23/00 100 902 ug/l 700-130 902 <br /> Pohime " 100 8 80 " 700-130 880 <br /> Ethy%enzene 100 858 " 700-130 859 <br /> Kylenes(total) " 300 267 " 700-130 89 <br /> 4urmgate. aa,a-Trifluorotoluene 100 911 700-130 911 <br /> LACS 00501okm <br /> Purgeable H drocarbons as Gasoline 5123100 250 24S ug/l 700-130 980 <br /> Surrogate. aaa-Trtfluomtoluene " 100 9 32 or700-130 932 <br /> Hem=Spike 0050102-MSI L005094-I5 <br /> 01 <br /> Benzene 5113100 100 ND 101 ug/1 60 0-140 7.7 <br /> lbluene " 100 ND 9 77 " 60 0-140 9 <br /> Ethylbenzene 100 ND 946 " 60 0-140 9443A <br /> Kylenes(total) 300 ND 295 600-140 983 <br /> Surrogate. aaa-Tnfluoromluene 100 105 <br /> 70 0-130 1 D5 <br /> %iatriz Spike Pay 0050102 MSDI L00509045 <br /> Wc <br /> 5123/00 100 ND 100 ugn 600-140 100 250 0.995 <br /> 10 0 ND 971 600-140 97.1 25 0 0.616 <br /> Sequoia Analytical-San Carlos *Refer to end of reportfor tent of notes and defrntdons <br /> Page 18 of 25 <br />