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The channel improvement is planned to include channel crossing reinforcement, and rip <br />rap installation. A channel breach will result in storm flows passing along the base of <br />CRDAI and into the sedimentation pond for CRDAI. If this occurs, the sedimentation <br />pond may fail. If the pond fails, large amounts of coal refuse sediment may pass into <br />Coal Creek, then to the Colorado River. The required channel improvements will reduce <br />the hazards associated with a possible channel breach. <br />iv. Structures - <br />Various structures currently exist at the Roadside Mine. These are situated at the <br />Roadside Mine South Portal Area, at the Roadside Mine North Portal Area and at the <br />Unit Train Loadout Area. <br />