AU: Animal unit:
A unit of measure used to compare different animal types.
• EPA (66 Fed. Reg. 2960-3138): 1 cattle excluding mature dairy and veal cattle; 0.7 mature dairy cattle; 2.5 swine weighing more than 55 pounds; 10 swine weighing 55 pounds or less; 55 turkeys; 100 chickens; and 1 veal calf.
• USDA: 1000 pounds of live animal weight.
Best achievable control technology
A unit of pressure equal to one atmosphere (14.7 pounds per square inch).
Best available technology (economically achievable)
Particulate matter in the atmosphere containing materials of biological origin that may cause disease, such as toxins, allergens, viruses, bacteria, and fungi.
Best management practice
Biochemical oxygen demand
Best practicable control technology (currently available)
C2, C10, C16:
Hydrocarbons with 2, 10, and 16 carbon atoms, respectively.
Clean Air Act
Concentrated animal feeding operation (see Appendix E).
Commodity Credit Corporation, a government-owned and operated corporation, was created in 1933 to stabilize, support, and protect farm income and prices. It now operates as a federal corporation within USDA; the Secretary of Agriculture chairs its Board of Directors. CCC programs are carried out through the personnel and facilities of other USDA organizations, including the Farm Service Agency and the Natural Resources Conservation Service. CCC funds are used for a number of conservation programs, include EQIP (67 Fed. Reg. 48431), the Conservation Reserve Program, the Wetlands Reserve Program, and the Farmland Protection Program.
Cloud condensation nuclei
Comprehensive Environmental Response, Compensation, and Liability Act
Cubic feet per minute
Code of Federal Regulations
Colony forming units (bacteria formed on nutrient media)
Comprehensive Nutrient Management Plan
Chemical oxygen demand
Conservation Reserve Program
Conservation Security Program