| |
IMPACTS |
CAUSES |
POLLUTANTS |
| Agriculture |
- land disturbance
- animal and plant wastes
- substances applied to enhance production such as manure, chemical fertilizers and pesticides
|
- poorly located or managed animal feeding operations
- overgrazing
- tilling too often or at the wrong time
- improper, excessive, or poorly timed application of pesticides, irrigation water, and fertilizer
|
- sediment
- nutrients
- bacteria
- pesticides
- metals
- salts
|
|
| Forestry |
- increased run-off
- increased sedimentation
|
- land disturbance
- road construction and use; heavy equipment operation
|
- land disturbance
- road construction and use; heavy equipment operation
|
|
| Mining |
|
- run-off from mine sites/settling ponds
- land disturbance
|
- specific to mine but can include pH (from acid mine drainage)
- total suspended solids and associated metals
- total dissolved solids
- nitrogen, selenium
|
|
Built-up Areas |
- erosion
- pollution into storm sewers or directly to lake, stream, river or wetland
|
- concentrated flow at discharge from storm sewers
- pollutants picked up by run-off
|
- sediment
- nutrients, bacteria
- hazardous wastes such as pesticides, solvents, motor oil
- higher water temps
|
|
Oil and Gas |
- soil erosion
- contamination of groundwater
- point-source pollution
|
- heavy machinery use
- saltwater injection wells or disposal wells
- spills from roads, well sites, and exploration corridors
|
- concentrated flow at discharge from storm sewers
- pollutants picked up by run-off
|
|
| Recreation |
- trail damage
- erosion of soil
- sedimentation of stream beds
- risk to fish
|
- unregulated access to wilderness areas due to infrastructure development
- motorized vehicles
- increased stream crossings
|
- Solvents, and motor oil from boats and quads, litter, TDS (sediments)
|
