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r 4j Jan. S '90 1.5:56, 0001 DA & MOORE/FRESNO 2 —193? PAGE 03/05 <br /> s <br /> Chevron U.S.A. - Page 2 <br /> two soil samples gill be obtained from the maximum depth of each excavation at <br /> the subject property as illustrated on the schematic profile presented as Figure <br /> I of this addendum. <br /> Excavated area <br /> V <br /> (51) Sample -- <br /> v -- Sample (IO') <br /> est, 20' max. <br /> - Sample (20') <br /> Sample Sample <br /> Figure I: Proposed sample locations in each excavated trench. <br /> The soil samples obtained from the sidewalls and trench bottoms will be <br /> sample from the bucket of the excavating equipment by means of the drive tube <br /> method. Due to safety considerations, drive tubes will not be advanced directly <br /> into excavation walls. The samples obtained from the sidewalls and maximum depths <br /> of each excavation will be obtained at the discretion of the local regulatory <br /> agency representative and Dames & Moore field geologist or engineer present. <br /> T)Atiiz4 t4 N40ORE <br />