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885 Jarvis Dnve <br /> Sequoia Morgan Hill CA 95037 <br /> �& (408)776-9600 <br /> Analytical FAX(408)782 6308 <br />' www sequoialabs cam <br /> 7228EC Engineering Inc-Pleasant Hill(Exxon) Project Exxon 7-3942 MOJ0913 <br /> 5 Morello Avenue Project Number Exxon 7-3942 Reported <br /> sant Hill CA,94523 Project Manager Ted Motse 11/09/05 15 08 <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 Limit Units Level Result %REC Limits RPD Limit Notes <br />' Batch 5J19003-EPA 5030B [PIT] <br /> Blank(5J19003-BLK1) Prepared&Analyzed 10/19/05 <br /> Gasoline Range Organics(C4-C12) ND 32 ug/l <br /> Benzene ND 0 25 <br /> Toluene ND 0 25 <br /> Ethylbenzene ND 0 25 <br />' Xylenes(total) ND 0 25 <br /> Methyl tent-butyl ether ND 1 25 <br /> Surrogate a a a-Tris luorotoluene 449 400 112 80-120 <br /> Surrogate 4-Bromofluorobenzene 384 400 96 80-120 <br /> LCS(5J19003-BSI) Prepared&Analyzed 10/19/05 <br /> l <br /> ine Range Organics(C4-C12) 237 50 ug/l 275 86 55-130 <br /> Range Organics(C4-C12) 237 50 275 86 55-130 <br /> Benzene 352 0 50 410 86 75-150 <br /> Benzene 352 050 " 410 86 75-150 <br /> Toluene 215 0 50 207 104 80-115 <br /> Toluene 215 050 207 104 80-115 <br /> Ethylbenzene 435 0 50 4 85 90 75-115 <br /> Ethylbenzene 435 050 485 90 75-I15 <br /> Xylenes(total) 245 0 50 23 8 103 75-115 <br /> Xylenes(total) 245 050 " 23 8 103 75-115 <br /> Surrogate a a a-Tris luorotoluene 45 6 400 114 80-120 <br /> Surrogate a a a-Trifluorotoluene 45 6 400 114 80-120 <br /> Surrogate 4-Bromofluorobenzene 401 400 100 80-120 <br /> Surrogate 4-Bromofluorobenzene 401 400 100 80-120 <br /> Matrix Spike(5J19003-MS1) Source MOJ0911-02 Prepared&Analyzed 10/19/05 <br /> Gasoline Range Organics(C4-C12) 165 50 ug/l 275 ND 60 55-130 <br /> Gasoline Range Organics(C4-C12) 165 50 " 275 ND 60 55-130 <br /> Benzene 260 0 50 " 4 10 ND 63 75-150 QM02 <br /> Benzene 260 050 4 10 ND 63 75-150 QM02 <br /> Toluene 164 0 50 20 7 ND 79 80-115 QM02 <br /> Toluene 16 4 050 " 207 ND 79 80-115 QM02 <br /> 0ola 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 to its entirety <br /> IPage 40 of 80 <br />