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� r y <br /> rJ^ A <br /> 4 4 <br /> documents were then superimposed and evaluated on a drafting "light table." A composite drawing was then <br /> produced which overlaid both the former service station and present bank structure on the same sheet. <br /> Careful analysis of the aerial photograph also revealed a light patch of concrete on the former service station's <br />` property.This patch of concrete coincided precisely with the area identified in the Fire Prevention District permits <br /> which indicated where the underground storage tanks were historically located. <br /> Soil borings were then placed in the vicinity of the former tank area,possible piping areas, and in the vicinity of <br /> the former waste oil storage tank.Final determination of sampling locations was made by a registered professional <br /> engineer,who was also present during drilling and supervised final adjustments to boring locations.Actual drilling <br /> revealed the presence of soils resembling backfill sands produced in a quarry.These uniformly graded soils were <br /> encountered in borings 2 and 3 at a depth of 6 to 13 feet. <br /> The above cited documentation and the discovery of the backfill material verified that drilling was conducted in <br /> the vicinity of the former tanks.Augeas Corporation believes,therefore,that the borings at the Union Safe Deposit <br /> Site were placed as accurately as possible with available resources and documentation made available to it. <br /> Sincerely, <br /> • I <br /> Rosanna Garrison <br /> Attachments <br /> cc Ms. Leslie Trotter,Union Safe Deposit <br /> I <br /> I <br />