Regulacje i polityka gospodarcza · 2.10.1998

Intent To Prepared a Dredge Material Management Plan Programmatic Environmental Impact Statement (PEIS) for Los Angeles Area Harbors and Marinas

The Corps, Los Angeles District, has maintenance authorities for the following marinas and harbors in Los Angeles County: Marina del Rey, Redondo, Los Angeles and Long Beach. Recently, the Corps has conducted dredge efforts on a biennial basis at the Marina del Rey harbor and the Los Angeles River mouth due to unanticipated and exceptionally high flows associated with extreme storm activity. High runoff in the watershed has caused severe sedimentation problems in the downstream portions of the rivers, especially in the approach channels to the ocean. With high sediment loads settling in the approach channels, the Corps has been required to dredge the channels under Emergency Authorities for navigation safety purposes. To expedite the process, the Corps has dredged only clean materials suitable for unconfined ocean disposal by conventional methods. Other sediments remained in situ. Efforts have been hampered by the inability to find disposal sites for materials not suitable for unconfined ocean disposal. As recent investigations have detected more and more harbors and marinas containing sediments questionable for unconfined ocean disposal, the Corps is proactively exploring use of u