Golden Gate National Parks Conservancy (GGNPC): the nonprofit partner that supports and assists the Golden Gate National Parks in research, stewardship and education.
Low-Impact Development (LID): is an approach to land development and landscape design that works with nature to manage stormwater as close to its source as possible.
Golden Gate National Recreation Area (GGNRA): A National Recreation Area administered by the National Park Service that includes numerous park units in the vicinity of the Golden Gate, including Ocean Beach.
Managed retreat: The strategic relocation of structures threatened by erosion according to pre-determined triggers.
Great Highway: the road that runs north / south adjacent to Ocean Beach. Internal ballast: materials placed to give stability, and distribute loads, in this case as one approach to reinforcing the Lake Merced Tunnel. Joint coastal management framework: A set of studies, plans, and policies recommended to guide management of the coastline at Ocean Beach by partners such as the SFPUC, Army Corps, and GGNRA. Lake Merced Tunnel (LMT): A 14-foot diameter pipe, located under the Great Highway, that stores and conveys combined wastewater (sewage) and stormwater from the Lake Merced basin watershed to the pump station at Sloat and great Highway. The LMT is threatened by erosion at Ocean Beach. Lands End: a portion of the GGNRA that is located to the north of Ocean Beach, wrapping around the northwest corner of San Francisco.
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ocean beach master plan | May 2012
Non-native/exotic: a term for a species of plant or animal that did not originate locally and was typically introduced to the area by humans. Oceanside Water Pollution Control Plant/Oceanside Treatment Plant: The major wastewater treatment facility on the west side of San Francisco, located on the Great Highway at the southern end of Ocean Beach. Its maximum capacity is 65 million gallons per day. O’Shaughnessy Seawall: A 4,800-foot historic seawall between the Cliff House and Lincoln Boulevard, completed in 1929, along with the adjacent promenade and roadway. Revetments: Large embankments of boulders or other materials used to protect coastal features from erosion. A form or coastal armoring. Wave runup: A measure used by coastal scientists of the maximum vertical reach of waves during a storm event, including the combone effects of tides, storm surge, and wave setup. Sea level rise: The increase in average sea levels attributed by scientists to warming of the earth’s climate, via melting ice and thermal expansion of the oceans. The State of California directs its agencies to plan for sea level rise of 14 inches by 2050 and 55 inches by 2100.
Combined Sewer-stormwater system: An infrastructure system, like that in San Francisco, in which stormwater (rain) and wastewater (sewage) drain through the same structures. During heavy rains, these systems can be overwhelmed, resulting in overflows that pollute adjacent bodies of water. Southwest Ocean Outfall (SWOO): The underwater pipe through which secondary-treated effluent is released from the Oceanside Treatment Plant, 4.5 miles into the Pacific Ocean. Sunset Basin watershed: The area west of Twin Peaks whose combined sewer and stormwater system drains westward into the Westside Transport Box. Test Scenarios: Scenarios developed through the Ocean Beach Master Plan process that examined different approaches to coastal management, maximizing single objectives to test their implications over a 100 year period. Westside Transport Box: A large transport and storage structure underneath Great Highway between Lincoln and Sloat Boulevards. It is designed to store excess stormwater in wet-weather conditions to prevent overflows, and may eventually become exposed as the coastline recedes due to sea level rise.