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Pesticides
Any chemical or substance used to kill or inhibit the growth of pests that damage or interfere with the growth of crops, shrubs, tress, timber and other vegetation useful to humans.
Industry: Agricultural chemicals
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Pesticides
underground sources of drinking water
Agricultural chemicals; Pesticides
Aquifers currently being used as a source of drinking water or those capable of supplying a public water system. They have a total dissolved solids content of 10,000 milligrams per liter or less, and ...
Underground Storage Tank (UST)
Agricultural chemicals; Pesticides
A tank located at least partially underground and designed to hold gasoline or other petroleum products or chemicals.
unreasonable risk
Agricultural chemicals; Pesticides
Under the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA), "unreasonable adverse effects" means any unreasonable risk to man or the environment, taking into account the medical, economic, ...
unsaturated zone
Agricultural chemicals; Pesticides
The area above the water table where soil pores are not fully saturated, although some water may be present.
upper detection limit
Agricultural chemicals; Pesticides
The largest concentration that an instrument can reliably detect.
uranium mill tailings piles
Agricultural chemicals; Pesticides
Former uranium ore processing sites that contain leftover radioactive materials (wastes), including radium and unrecovered uranium.
uranium mill-tailings waste piles
Agricultural chemicals; Pesticides
Licensed active mills with tailings piles and evaporation ponds created by acid or alkaline leaching processes.