A common type of temporary storage impoundment for hazardous liquid waste is an open pit or holding pond, called a lagoon.
The department then issues a letter, followed by a citation and the possibility of impoundment.
Following impoundment creation, additions of mineral and organic material (likely erosional siltation) have resulted in soils with unique morphologic, physical, and chemical characteristics different from subaerial, shoreline soils but expressing a welded morphology that is a product of impoundment creation.
In the wake of Watergate and in response to Nixon's abuses of impoundment power, Congress rebelled.
We calculated the distance to the nearest mesic area, which included streams, seeps, springs, impoundments, irrigated areas, and water discharge sites; the type of mesic area was developed using Feature Analyst® 4.2 (Visual Learning Systems, Inc., 2008) for ArcGIS® 9.3 (ESRI, Redlands, CA, USA).
Development of impoundments is critical and require considerations of typical water-impounding dams and additional requirements of coal waste disposal impoundments.
High lake stands drove stream damming, reservoir impoundment, and eolian infilling of impoundments.
The regulations restrict where new coal ash impoundments and landfills can be built, mandates utilities to monitor storage facilities and repair leaks, and forces the closure of impoundments that don't meet standards for structural integrity.
Since the December 2008 collapse of the Kingston Fossil Plant coal ash impoundment in Tennessee, which spilled 5.4 million yd of ash into the Emory River, the U.S. EPA has been conducting on-site assessments of impoundments at electric utilities across the country.
Throughout the world, wetland ecosystems are under increasing pressure from agriculture, urbanization of catchment areas, tourism and recreational activities, construction of impoundments and changes to hydrology and climate.
