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404 N Wlget Lane <br /> Walnut Geek,CA 94598 <br /> Sequoia (925)988-9600 <br /> , 4 FAX(925)9$8-9673 <br /> 5)— Analytical `^" w."U0watm <br /> com <br /> Gettler Ryan,Inc -Dublin Project Tosco <br /> 6747 Sierra Court Suite] Project Number Tosco# 11194 Reported <br /> Dubhn CA,94568 Prosect Manager Deanna L Hardmg I 1 Apr-00 10 38 <br /> Total Purgeable Hydrocarbons (C6-Cx2), BTEX and MTBE by DHS LUFT- Quality Control <br /> Sequoia Analytical -Walnut Creek <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Um Unita Level Result %REC Limits RPD Lout Notes <br /> Batch OC30003-EPA 5030B[PITj <br /> Blank(OC30003-BI.KI) Prepared&Analyzed 29-Mar-00 <br /> Purgeable Hydrocarbons ND 50 ug4 <br /> Bement ND 050 " <br /> Toluene AID 050 " <br /> Ethylbenacne ND 050 " <br /> Xylenes(total) AID 050 " <br /> Methyl tent-butyl ether ND 25 " <br /> Surrogate aaa-TnJ?:uorotoluene 301 300 lob 70-130 <br /> LCS(OC30003-BSI) Prepared&Analyzed 29-Mar-00 <br /> Benzene 216 050 ug4 200 108 70.130 <br /> Tohuune 218 050 " 200 109 70-130 <br /> W(=) <br /> 22.4 050 200 112 70-130 <br /> 636 050 600 106 70-130 <br /> Surrogate aaa-Tri luorotoluene 18.6 300 953 70-130 <br /> Matrix Spike(OC30003-MS1) Source W003486-04 Prepared&Analyzed 29-Mar-00 <br /> Benzene 201 050 ug/l 200 ND 101 70-130 <br /> Toluene 202 050 200 ND 101 70-130 <br /> Ethylbenzene 204 050 200 ND 102 70-130 <br /> Xylenes(total) 590 050 600 ND 983 70-130 <br /> Surrogate aaa-Tn luorotoluem 2&6 300 9S3 70.130 <br /> Matrix Spike Dup(OC30003-MSD 1) Source W003406-04 Prepared&Analyzed 29-Mar-00 <br /> Benzo ne 208 050 ugn 200 ND 104 70-130 3 42 20 <br /> Tohrene 210 0 50 200 ND 105 70-130 3 88 20 <br /> Rhylbemene 210 0 50 200 ND 105 70-130 290 20 <br /> Xylenes(total) 606 0 50 600 ND 101 70-130 268 20 <br /> Surrogaw q q a-7Y'r Orotohwne 296 300 9&7 70.130 <br /> Ola A dytical-Walnut Ore& 77re results in flus report apply to the samples analyred in accordowe with the chmn of <br /> custody document. This analytical report must be reproduced in its endrety <br /> Page 10 of 21 <br />