Coastal Development permits (except in certain areas where the Commission retains jurisdiction, i.e. public trust lands), and is instead responsible for reviewing amendments to a local agency's LCP, or reviewing Coastal Development Permits issued by local agencies which have been appealed to the commission. A Local Coastal Program is composed of a Land Use Plan (LUP) and an Implementation Plan (IP). A Land Use Plan details the Land Uses which are permissible in each part of the local government's area, and specifies the general policies which apply to each land use. The LUP can be a part of a local government's general plan. The Implementation Plan is responsible for implementing the policies contained in the LUP. The IP is generally a part of the city's zoning code. One example The Local Coastal Program (LCP) for a run-down gateway to Channel Islands Harbor in Oxnard is designated for visitor-serving commercial uses and harbor-related uses that support recreational boating and fishing. The county owns and manages the harbor and wanted to amend the LCP to allow a mixed-use development with up to 400 apartments as their selected developer said the project was only feasible with the housing. In 2020, the commission refused to override the denial by the city of Oxnard of land-use changes as that is only intended to be used in rare instances when a local government is standing in the way of the development of a public works project that would meet regional public needs. Managed retreat The Commission recommended cities implement managed retreat philosophies allowing oceans to naturally erode developments thereby nourishing beaches with reclaimed sand made of disintegrated former properties. History The California Coastal Commission was established in 1972 by voter initiative via Proposition 20. This was partially in response to the controversy surrounding the development of Sea Ranch, a planned coastal community in Sonoma County. Sea Ranch's developer-architect, Al Boeke, envisioned a community that would preserve the area's natural beauty. But the plan for Sea Ranch eventually grew to encompass of the Sonoma County coastline that would have been reserved for private use. This and other similar coastal projects prompted opponents to form activist groups. Their efforts eventually led to putting Proposition 20 on the ballot. Proposition 20 gave the Coastal Commission permit authority for four years. The California Coastal Act of 1976 extended the Coastal Commission's authority indefinitely. Jerry Brown, in his first term as