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' SSS la Drive <br /> Sequoia Morgan Hill,CAA 95037037 <br /> Analytical (408)776- 00 <br /> FAX 782-636308 <br /> www sequoquotalatrs corn <br />' ETIC Engineenng Inc-Pleasant Hill(Exxon) Project Exxon 7-3942 MOJ0913 <br /> 2285 Morello Avenue Project Number Exxon 7-3942 Reported <br /> Pleasant Hill CA,94523 Project Manager Ted Moise 11/09/05 15 08 <br />' Volatile Organic Compounds by EPA Method 8260B- 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 5J20016-EPA 5030E PIT <br /> fBlank(5J20416-BLK2) Prepared 10/20/05 Analyzed 10/21/05 <br /> 1,3,5-Tnmethylbenzene 031 025 <br /> i <br /> Vinyl chloride ND 025 <br /> I <br />' Xylenes(total) ND 047 <br /> Surrogate Dibromofluoromethane 557 500 111 65-130 <br />' Surrogate 12-Dichloroethane-d4 607 500 121 60-135 <br /> Surrogate 1 2-Dichloroethane-d4 607 500 121 60-135 <br /> Surrogate Toluene-dg 537 Soo 107 70-120 <br /> Surrogate 4-Bromofluorobenzene 463 500 93 70-120 <br />' LCS(5320016-BS1) Prepared&Analyzed 10/20/05 <br /> tert-Amyl methyl ether 762 050 ug/l too 76 80-115 QCO2 <br /> D"e <br /> 896 050 100 90 65-115 <br /> obenzene 109 050 100 109 80-120 <br /> Bromochloromethane 547 050 100 55 60-145 QCO2 <br /> Bromodichloromethane 837 050 " 100 84 75-150 <br /> Bromoform 101 050 100 101 60-125 <br /> Bromomethane 108 10 100 108 40-150 <br /> tent-Butyl alcohol 193 20 500 386 75-150 QC01 <br /> sec-Butylbenzene 132 050 100 132 80-130 QC01 <br />' tert-Butylbenzene 124 050 100 124 80-125 <br /> n-Butylbenzene 137 050 100 137 80-130 QC01 <br /> Carbon tetrachloride 903 050 " ]Do 90 75-140 <br /> Chlorobenzene 121 050 „ 100 121 80-120 QC01 <br /> Chloroethane 876 10 100 88 75-120 <br /> Chloroform 897 050 " 100 90 80-125 <br />' Chloromethane 103 050 100 103 50-135 <br /> 2-Chlorotoluene 121 050 100 121 80-120 QC01 <br /> 4-Chlorotoluene 122 050 100 122 75-125 <br /> r <br /> Di-isopropyl ether 103 050 100 103 75-125 <br /> 1,2-Dibromo-3-chloropropane 166 10 100 166 65-140 QC01 <br />' Dibromochloromethane 774 050 100 77 70-125 <br /> �la 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 />' Page 66 of 80 <br />