| Bill Hargrave notes that this is just a prime example of where a small pocket of weeds might be distributed widely, even to Missoula Montana, Seattle Washington, or Salmon Idaho if the soil is moved away by trucks. Nina Eckberg notes that heavy equipment contractors can also take these weeds up into Forest Service land. She notes that the Forest Service has a program where they try to get the equipment washed off before and after they go out of public land. She also notes that soil can also end up in a source pit where they use it to build roads and then weeds end up along the side of the road. Back to Panorama
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