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Standards for performing a Phase I site assessment have been promulgated by the US EPA [1] and are based in part on ASTM in Standard E1527-13. [ 2 ] If a site is considered contaminated, a Phase II environmental site assessment may be conducted, ASTM test E1903, a more detailed investigation involving chemical analysis for hazardous substances ...
The Laguna, whose principal tributary streams rise on the southern slopes of the Sonoma and Mayacamas Mountains, [4] is the largest tributary of Mark West Creek.The sinuous watercourse and associated wetlands form a significant floodplain during the heavy winter rains, capable of storing over 80,000 acre-feet (99,000,000 m 3) of stormwater.
Restoration of the wetlands began in 1988 and was completed in 2000. [1] Now, the site serves a dual purpose of removing nitrates from the creek water and providing a bird habitat. The water district also operates an adjacent wastewater treatment facility but the treated wastewater does not enter the wildlife sanctuary. [2]
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The California Environmental Quality Act (CEQA / ˈ s iː. k w ə /) is a California statute passed in 1970 and signed in to law by then-governor Ronald Reagan, [1] [2] shortly after the United States federal government passed the National Environmental Policy Act (NEPA), to institute a statewide policy of environmental protection.
The 43 acres (17 ha) was a former site of oil wells and is one of the few natural areas remaining within an urban landscape. [ 1 ] Formed eons ago when the mountains of the Palos Verdes Peninsula rose to the south, Madrona Marsh is a shallow depression fed by wet season (spring) storms as the name "vernal" indicates.
The Gardena Willows Wetland Preserve occupies 13.6 acres (55,000 m 2) of land owned by the City of Gardena, in Los Angeles County, California.The preserve is the last intact remnant of the former Dominguez Slough, an important vernal marsh and riparian forest with riparian zones that once covered as much as 400 acres (1,600,000 m 2) of this area, known as the South Bay region.
The Napa Sonoma Marsh is a wetland at the northern edge of San Pablo Bay, which is a northern arm of the San Francisco Bay in California, United States.This marsh has an area of 48,000 acres (190 km 2), of which 13,000 acres (53 km 2) are abandoned salt evaporation ponds.