Composite sample

a recombined coalbed sample produced by averaging together thickness-weighted coal analyses from partial samples of the coalbed, such as from one or more bench samples, from one ...

composite sample

Natural environment; Water

A series of water samples taken over a given period of time and weighted by flow rate.

composite sample, weighted

Natural environment; Water

A sample composed of two or more portions collected at specific times and added together in volumes related to the flow at time of collection. Compare grab sample

composite sampling scheme

Mining; General mining; Mineral mining

One in which different parts, or stages, of the sample are reached by differing methods.

benchmark response (BMR)

Agricultural chemicals; Pesticides

A designated level or percent of response relative to the control level of response used in calculating a BMD.

best management practices (BMP)

Agricultural chemicals; Pesticides

Procedures or controls other than effluent limitations to prevent or reduce pollution of surface water (includes runoff control, spill prevention, and operating procedures).

BMD10

Agricultural chemicals; Pesticides

Benchmark Dose associated with a 10% response adjusted for background. For example, these BMD(10) values are doses expected to produce a 10% reduction in brain cholinesterase ...

comparative effect level (CEL)

Agricultural chemicals; Pesticides

Dose by which potency of chemicals may be compared; e.g. the dose causing a maximum of 15% cholinesterase inhibition.

confidential business information (CBI)

Agricultural chemicals; Pesticides

Information that contains trade secrets, commercial or financial information, or other information that has been claimed as confidential by the submitter.