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eh <br />ESPEY, HUSTON & ASSOCIATES, INC. <br />CJ <br />limitations aze severe enough to make the use of the soil questionable. Engineering <br />designs to overcome the limitations are difficult and expensive. <br />Soils were rated for their suitability as a source of roadfill, sand, gravel, <br />topsoil, borrow and cover material. The suitability was rated in terms of good, fair, <br />and poor, which pazallel the limitations terms of slight, moderate, and severe. <br />Evaluations for roadfill material are based on AASHO test data. <br />The soils also were rated for topsoil borrow and as cover for disturbed <br />areas. The difference is that in topsoil borrowing operations, the reclaimability of <br />the borrow azea must be considered. In evaluating a soil for cover for disturbed <br />azeas the soil is stripped and then used for reclamation of the same areas. <br />The soil features that affect their use aze shown in Table I-13. Depth, <br />• slope, permeability and water table affect their use in pond-reservoir azeas. Depth, <br />stoney material, susceptibility to piping, and shear strength affect their use for <br />dams, levees, and other embankment materials. <br />• <br />I-86 <br />