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404 N Wlget Lane <br /> Walnut Geek CA 94598 <br /> Sequoia (925)988-9600 <br /> 1 4 FAX(92.5)988-9673 <br /> OW <br /> Analytical `"wWl�atn�m <br /> 5)Gettler Ryan,Inc -Dublin Project Unocal <br /> 6747 Sierra Court Scute J Project Number Unocal#0123 Reported <br /> Dublin CA,94568 Project Manager Deanna L Hardmg 07-Apr-0O 15 41 <br /> Total Purgeable Hydrocarbons (C6-C12), BTEX and MTBE by DHS LUFT- Quality Control <br /> Sequoia Analytical -Walnut Creek <br /> Reporting Spike Source %REC RPD <br /> ,Analyte Result Lrrmt Units Level Result VeREC Linuts RPD Limit Notes <br /> Batch OC28003-EPA 5030B [Prn <br /> Blank(OC28003-BLK1) Prepared&Analyzed 28-Mar-00 <br /> Purgeable Hydrocarbons ND 50 ugfl <br /> Benzene ND 050 „ <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Methyl tort-butyl ether ND 25 " <br /> Surrogate ago-Trry4uorotoluene 311 300 107 70-130 <br /> LCS(OC28003-B51) Prepared&Analyzed 28-Mar-00 <br /> Benzene 218 050 ugll 200 109 70.130 <br /> ene 220 050 � 200 110 70.130 <br /> enzene 22 0 050 200 110 70-130 <br /> Xylenes(total) 636 050 600 106 70.130 <br /> Surrogate tt q a-Trrfluorotoluene 290 1300 96.7 70-130 <br /> Matra Spike(OC28003-MSI) Source W003451-02 Prepared&Analyzed 28-Mat'-00 <br /> Benzene 230 0 50 ugll 200 098 110 70-130 <br /> Toluene 225 050 200 ND 113 70.130 <br /> Ethylbenzene 224 050 200 ND 112 70-130 <br /> Xylenes(total) 642 050 600 ND 107 70-130 <br /> Surrogate a,a,a-Tr7 luorotoluene 308 300 103 70-130 <br /> Matrix Spike Dup (OC28003-MSDI) Source W003451-02 Prepared&Analyzed 28-Mar-00 <br /> Benzene 22 3 0 50 ug/l 200 098 107 70-130 309 20 <br /> Toluene 217 0 50 200 ND 109 70-130 362 20 <br /> Ethylbenzene 217 050 200 ND 109 70.130 317 20 <br /> Xylenes(total) 629 0 50 600 ND 105 70-130 205 20 <br /> Surrogate gga-TnJluormoluene 286 300 953 70.130 <br /> NWquola Analytical-Walnut Creek The results in this report apply to the samples anal)ned in accordance with the chain of <br /> custody document This analytical report must be reproduced in its entirety <br /> Page 13 of 18 <br />