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Land subsidence in the Central Valley is monitored by various government agencies including NASA, the California Department of Water Resources, the USGS, and various local agencies or businesses within the valley. The NASA Jet Propulsion Laboratory uses InSAR to remotely measure topographic change over time. In a monitoring study from May 2015 ...
Most entities are grouped together to form "agencies", which are led by a secretary of the Governor's Cabinet. Thus, department directors report to a cabinet secretary. The agencies are commonly described as "superagencies", especially by government insiders, to distinguish them from the common usage of the term "government agency".
Subsidence frequently causes major problems in karst terrains, where dissolution of limestone by fluid flow in the subsurface creates voids (i.e., caves).If the roof of a void becomes too weak, it can collapse and the overlying rock and earth will fall into the space, causing subsidence at the surface.
Natural causes include; earthquakes, erosion, glacial movement, soil compaction and the formation of sinkholes. [18] Groundwater use and pumping in the area was the major water use for farmers and agriculture in the 1920s, and over time, this over-pumping resulted in land subsidence and a decline in groundwater-level resources.
The soil exudes nitrous oxide, an odorless and colorless gas that can be harmful when exposed to it for a long period of time, and incorporates itself into the ozone layer located at ground level. [17] Production of nitrous oxide in California has shown that the addition of soil and fertilization can emit about 161,100 metric tons per year ...
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The Hazardous Waste and Substances Sites List, also known as the Cortese List—named for Dominic Cortese—or California Superfund, is a planning document used by the State of California and its various local agencies and developers to comply with the California Environmental Quality Act requirements in providing information about the location of hazardous materials release sites.