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<br /> <br />Topography and Drainage <br />The study area is in the floodplain of the South Platte <br />River. Elevations range from 5077 feet at the southwest corner <br />to 499II feet in the norther t adjacent to the river. Total <br />relief in the area studied east of tine Brantner Ditch is about <br />20' <br />There are no well-defined drainageways eastward from the <br />Brantner Ditch to the river. ~latural slc,i,e tot-+ar•d the river <br />would carry excess surface water; however, an artificial levee <br />would prevent surface runoff from taking its natural course to <br />the river. Excess water traoped by the levee either evaporates <br />or passes downrr~~•d to the yround o-+ater table. <br />i•iethods and Procedures <br />Data gathered from well logs obtained from the State Engi- <br />neer's Office was used to compile depth-to-bedrock and over- <br />burden thickness ma?s. The available information r:gas not suffi- <br />cient to determine the quantity and quality of aggregate under- <br />lying the property, and an exploratory drilling project was re- <br />commended and approved. Becker Drills, Inc. was contracted to <br />drill a series of test holes 'in the prriod January 12-16, 1972. <br />Laboratory analysis of samples recovered in the drilling program <br />was made by Robert 41. Thompson, Inc., and our personnel visually <br />examined the samples for deleterious inat vial. A series of six <br />tvork n•~aps was prepared and volumetric calculations were made frorn <br />these. final ma;~s accompanying this report are: <br />7356a-1 Depth to Bedrock <br />7356a-2 Thickness of IlA <br />I - 2 <br />