West Coast
Newport Lower Harbor / Google Earth

CA - Newport Beach considering digging a Confined Aquatic Disposal for dredging of the lower bay

The plan will include where to put about 100,000 cubic yards of sediment unsuitable for ocean disposal.

NEWPORT BEACH—The latest planning efforts for a dredging project in Newport Beach’s lower bay are focused on where to put about 100,000 cubic yards of sediment unsuitable for ocean disposal. Newport Beach Harbor Commissioners got an update on the dredging project at their Nov. 13 meeting.

City staff has been directed by the City Council to pursue a dredging plan that gets the lower bay to authorized depths, which range from minus 10 to minus 20 feet, for navigational purposes and to improve tidal flushing. In partnership with the Army Corps of Engineers, the project would dredge more than one million cubic yards of sediment, of which 90 percent is suitable by federal agencies for ocean disposal.

Material that is greater than 80% sand and meets quality criteria is reused on the local beach and material that is less than 80% sand but still meets quality criteria is disposed at an Environmental Protection Agency approved disposal site called LA-3, which is a one-mile site about six miles from the harbor’s entrance.

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