This amendment updates the price schedule. The contract aims to recover intact samples of cemented sand and gravel from the bottom of the Mississippi River near Hickman, KY. Historical borings in the area penetrated this material, but the samples were too disturbed for unconfined compressive strength tests. The contractor will perform river-based rotosonic borings and rock coring at specified coordinates.

The contract seeks to recover intact samples of cemented sand and gravel from the bottom of the Mississippi River near Hickman, KY. Historical borings penetrated this material, but the samples were too disturbed for unconfined compressive strength testing. The contractor will execute river-based rotosonic borings and rock coring at designated coordinates.