A B C D E F G H I L M N O P Q R S T U V W Z

Adsorption
Adsorption is the adhesion of molecules of gas, liquid, or dissolved solids to a surface. The term also refers to a method of treating wastes in which activated carbon is used to remove organic compounds from wastewater.

See also:

• Carbon Adsorption

Air Sparging
In air sparging, air is injected into the ground below a contaminated area, forming bubbles that rise and carry trapped and dissolved contaminants to the surface. Air sparging is often used in conjunction with soil vapor extraction systems.

See also:

• Soil Vapor Extraction (SVE)

Air Stripping
Air stripping is a treatment technology that removes or "strips" volatile organic compounds (VOC) from contaminated groundwater or surface water. As air is forced through the water, VOCs are volatilized.

See also:

• Volatile Organic Compound (VOC)

American Society for Testing and Materials (ASTM)
ASTM sets standards for many services, including methods of sampling and testing of hazardous waste and media contaminated with hazardous waste.

See also:

• Risk-Based Corrective Action (RBCA)

Aquifer
An aquifer is an underground rock formation composed of such materials as sand, soil, or gravel that can store groundwater and supply it to wells and springs.

See also:

• Groundwater
• Water Table

Aromatics
Aromatics are organic compounds that contain 6-carbon ring structures, such as creosote, toluene, and phenol, that often are found at dry cleaning and electronic assembly sites.

See also:

• Creosote
• In Situ Soil Flushing