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S� <br /> Gettler-Ryan/Geostrate:gtes(l) Project Tosoo(1) <br /> 6747 Sterna Court,Suite] Project Number Tosco#5886,Stockton,CA — _— _ Reported <br /> Dublin CA,94568 Project Manager Deanna Hardtng 05125101-16 59- <br /> Total Purgeable Hydrocarbons (C6-C1.2),BTEX and MTBE by DHS LUFT -Quality Control <br /> Sequoia Analytical- San Carlos <br /> gang Space source %REC RPD <br /> Rsrsult = -limit- Units - Level = Result- _NoREC L mrts RPD Lunn Notes <br /> Analyte <br /> Batch 1050087-EPA 5030B <br /> Blank(1050087-BLKI) Prepared&Analyzed 05/21/01 <br /> Purgeabie Hydrocarbons as Gasohne ND 500 ug/1 <br /> Benzene ND 0 500 " <br /> Toluene ND 0 500 " <br /> Ethylbenzene ND 0 500 " <br /> Xylenes(total) ND 0500 " <br /> Methyl tert-butyl ether <br /> ND 500 " <br /> Surrogate a a a-Tri}luorotoluene 810 10 0 82 0 70-130 <br /> LCS(1050087-BSI) Prepared&Analyzed 05/21/01 <br /> Benzene 849 0 500 ug/1 100 849 70-130 <br /> Toluene 849 0 500 100 849 70-130 <br /> Ethylbm=e 8 43 0 500 too 843 70-130 <br /> Xylenes(total) 254 0 500 300 84 7 70-130 <br /> Surrogate a aa-Tnfluorotoluene 770 100 770 70-130 <br /> LCS(1050087-BS2) Prepared&Analyzetl 05/21/01 <br /> Forgeable Hydrocarbons as Gasoline 266 50 0 ug/1 <br /> 250 106 70-130 <br /> Surrogate a a a-Trrfluorotoluene 9 03 100 903 70-130 <br /> Matra Spike(1050087-MS1) Source L105074-05 Prepared 05/21/01 Analyzed 05/22/01 <br /> Benzene 736 0 500 ug/l 100 ND 736 60-140 <br /> Toluene 742 0 500 100 ND 742 60-140 <br /> Ethylbenzene 733 0 500 too ND 733 60-140 <br /> Xylenes(total) 231 0 500 n300 ND 770 60-140 <br /> Surrogate aa a-TrPuorotoluene <br /> 837 1 <br /> 1 <br /> 100 83 7 70-130 <br /> Matrix Spike Du (1050087-MSDI) Source L105074-05 Prepared 05/21/01 Analyzed 05/22/01 <br /> Benzene 803 0 500 USA 10 0 ND 803 60-140 871 <br /> 25 <br /> Toluene 8 13 0 500 100 ND 813 60-140 9 13 25 <br /> Ethylbenzene 799 0 500 100 ND 798 60-140 849 25 <br /> Xylenes(total) <br /> 250 0 500 300 ND 833 60-140 790 25 <br /> Surrogate a a a-Trifluorotoluene 830 100 830 70-130 <br /> Sequoia Analytical-San Carlos The results in chis report apply to the samples analyzed in accordance with the cha <br /> custody document Thu analytical report must be reproduced in its entirety <br /> Page 21 of 28 <br />