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A i t f� <br /> 404 N Wiget lane <br /> Sequoia Walnut Creek.CA 94598 <br /> (92525 98)�8-9G00 <br /> 4DFAX(925)988-%73 <br /> NO Analytical www sequotalabs corn <br /> elk <br /> Ryan,Inc -Dublin Project Chevron <br /> 6747 Sierra Court Suite J Project Number Chevron#9-4275 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 04-Jan-01 06 43 <br /> TVPBMTEX/M/N by 8015BGRO/8021B-Quality Control <br /> Aspen Analytical <br /> Reporting Spike Source a/oREC RPD <br /> Analyte Result Lunt Units Level Result °/aREC Limits RPD Lunn Notes <br /> Batch AL02701 -EPA 5030B <br /> LCS(AL)2701-BS2) Prepared 21-Dec-00 Analyzed 22-Dec-00 <br /> Benzene 201 0 500 ug/1 200 101 74-112 <br /> Toluene 198 0 500 " 200 990 76-112 <br /> Ethylbenzene 201 0 500 200 101 81-118 <br /> Xylenes(total) 220 150 200 110 75-124 <br /> Methyl cert-butyl ether 225 250 " 200 113 55-162 <br /> Surrogate ggcr-Tnfluorotoluene 114 200 570 48-126 <br /> LCS(AL)2701-BS3) Prepared 21-Dec-00 Analyzed 22-Dec-00 <br /> Benzene 19 6 0 500 ug/1 200 980 74112 <br /> Toluene 201 0 500 200 101 76-112 <br /> Ethylbanzene 190 0 500 200 950 81-118 <br /> Xylenes(total) 230 150 200 115 75-124 <br /> yl tat-butyl ether 233 250 200 116 55-162 <br /> zwragaw qqa-TnJ1uonoto1uene 223 " 200 111 48-116 <br /> LCS Dnp(AL02701-BSD1) Prepared 8c Analyzed 21-Dec-00 <br /> Gasolme ND 500 ug/L 0-200 200 <br /> Benzene 175 0 500 200 875 74-112 113 20 <br /> Toluene 17 5 0 500 200 87 5 76-112 123 20 <br /> Ethylbenzene 165 0 500 200 825 81-118 151 20 <br /> Xylenas(total) 212 150 200 106 75-124 120 20 <br /> Methyl tat butyl other 204 250 200 102 55-162 18 3 20 <br /> Surrogate aqa-7)r&oroto1uene 1&0 20 0 900 48-126 <br /> LCS Dup(AL02701-BSD2) Prepared 21-Dec-00 Analyzed 22-Dec-00 <br /> Benzene 186 0 500 ug/1 200 930 74-112 775 20 <br /> Toluene 189 0 500 200 945 76-112 465 20 <br /> Ethylbenzene 179 0 500 200 893 81-118 116 20 <br /> Xylaus(totlal) 221 150 200 111 75-124 0 454 20 <br /> Methyl tart-butyl ether 197 250 200 985 55-162 13 3 20 <br /> Surrogate aaa-Tnfluorotoluene 18.9 0200 945 48-116 <br /> $egw1a Analytical-'walnut Creek The results in this report apply to the samples analysed in accord=oe with the chain of <br /> • custody document.Tins analytical report must be reproduced to ria entirety <br /> Page 7 of 10 <br />