A Seattle-based Manson Construction employee shows Channel Islands Harbor Director Lyn Krieger and Los Angeles District Commander Col. Kirk Gibbs the hydrographic survey map of the area the hydraulic cutter-head suction dredge H.R. Morris will dredge Feb. 14. Manson, the Corps' contractor for the project, piped the dredged material to nearby Hueneme Beach to replenish sand lost to erosion.