They are low-density polyethylene tubes filled with fish lipid. The fish lipid sequesters dissolved compounds from water. Shallow water-table aquifer Unconsolidated deposits containing water whose surface is at atmospheric pressure. In the Study Unit, these aquifers are not typically used as public supply. Species Populations of organisms that may interbreed and produce fertile offspring having similar structure, habits, and functions.
Stream reach A continuous part of a stream between two specified points.
The Study-Unit Survey relies primarily on sampling existing wells and, wherever possible, on existing data collected by other agencies and programs. Subsidence Compression of soft aquifer materials in a confined aquifer due to pumping of water from the aquifer. Subsidence has occurred in Las Vegas Valley within the Study Unit. Sulfide minerals often produce sulfuric acid when exposed to the atmosphere and water. Synthetic organic compounds Compounds that are manmade and contain carbon.