SOIL TEXTURE

The feel or composition of the soil (sand, silt, or clay) as determined by the size of the soil particles.

SOIL TYPE

Soils that are alike in all characteristics, including texture of the topsoil. Soil maps and information on site index, erosion potential, and other limiting properties are available from one’s county Soil Conservation Service office.

SOLAR RADIATION MODIFICATION (SRM)

Solar radiation modification refers to the intentional modification of the Earth’s shortwave radiative budget with the aim of reducing warming. Artificial injection of stratospheric aerosols, marine cloud brightening and land surface albedo modification are examples of proposed SRM methods. SRM does not fall within the definitions of mitigation and adaptation (IPCC, 2012b, p. 2). Note […]

SOLE SUPPLY

The amount of Beneficial Use allowed under a particular water right when used alone and separate from all Supplemental Rights. If a water right has been assigned to more than one Water Use Group, the Sole Supply of the water right is the sum of its Beneficial Use Amounts.

SOLE-SOURCE AQUIFER

As defined by the U.S. Environmental Protection Agency, an aquifer that supplies 50 percent or more of the drinking water of an area.

SOLID WASTE

Non-liquid, non-soluble materials ranging from municipal garbage to industrial wastes that contain complex and sometimes hazardous substances. Solid wastes also include sewage sludge, agricultural refuse, demolition wastes, and mining residues.

SOLID-PHASE EXTRACTION

A procedure to isolate specific organic compounds onto a bonded silica extraction column.

SOLUTE

Any material that is dissolved in another.

SOLUTION

Formed when a solid, gas, or another liquid in contact with a liquid becomes dispersed homogeneously throughout the liquid. The substance, called a solute, is said to dissolve. The liquid is called the solvent.