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885 Jarvis Drive <br /> Sequoia Morgan Hill C795937 <br /> (408)782 9608 <br /> ► Analytical FAX equo 782 6308 <br /> coin www sequoialabs coni <br /> 0 <br /> ETIC Engineering Inc-Pleasant Hill(Exxon) Project Exxon 7-3942 MOL0952 <br /> 2285 Morello Avenue Project Number Exxon 7-3942 Reported <br /> Pleasant Hill CA,94523 Project Manager Ted Motse 01/16/06 15 09 <br /> Purgeable Hydrocarbons and BTEX by EPA 8015B/8021B - Quality Control <br />' Sequoia Analytical- Morgan Hill <br /> Evaluation Spike Source %REC RPD <br /> Analyte Result Lirmt Units Level Result %REC Liants RPD Lirmt Notes <br />' Batch 5L28035-EPA 5030B [P/Tl <br /> Blank(5L28035-BLKI) Prepared&Analyzed 12/28/05 <br /> Gasoline Range Organics(C4-C12) ND 25 ug/l <br /> Gasoline Range Organics(C4-C 12) ND 25 " <br /> Benzene ND 025 " <br /> Benzene ND 025 <br /> Toluene ND 0 25 <br /> Toluene ND 025 ^ <br /> Ethylbenzene ND 025 " <br /> Ethylbenzene ND 025 " <br /> Xylenes(total) ND 0 25 ^ <br />' Wlenes(total) ND 025 <br /> ethyl tert-butyl ether ND 125 <br /> Surrogate a a a-Tnfluorotoluene 809 800 101 80-120 <br /> Surrogate a a a-Trifluorotoluene 809 800 101 80-120 <br /> Surrogate 4-Bromofluorobenzene 778 800 97 80-120 <br /> Surrogate 4-Bromofluorobenzene 778 800 97 80-120 <br />' LCS(5L28035-BSI) Prepared&Analyzed 12/28/05 <br /> Gasoline Range Organics(C4-C12) 194 50 ug/l 275 71 55-130 <br /> Gasoline Range Organics(C4-C12) 194 50 ^ 275 71 55-130 <br />' Benzene 324 0 50 " 4 10 79 75-150 <br /> Benzene 324 0 50 4 10 79 75-150 <br /> Toluene 197 050 207 95 80-115 <br />' Toluene 197 0 50 n 207 95 80-115 <br /> Ethylbenzene 422 050 485 87 75-115 <br /> Ethylbenzene 422 050 ^ 485 87 75-115 <br /> iXylenes(total) 24 1 050 " 23 8 101 75-115 <br /> Xylenes(total) 24 1 0 50 23 8 101 75-115 <br /> i Surrogate a a a-Trifluorotoluene 781 800 98 80-120 <br /> Surrogate a a a-Triuorotoluene 781 800 98 80-120 <br /> Surrogate 4-Bromofluorobenzene 796 800 100 80-120 <br /> Surrogate 4-Bromofluorobenzene 796 800 100 80-120 <br /> iSequoia Analytical-Morgan Hill The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document Unless otherwise stated results are reported on a wet weight basis This <br /> analytical report must be reproduced in its entirety <br /> i <br /> Page 19 of 31 <br /> i <br />