Thanks for all the great information you post Dave.
I really hate when some one writes a letter like that without fact or study! Who wrote it? There is no factually information at all in that letter, only opinion. Sounds like their job should be the first one we go after.
As far as the red legged frog and Yosemite Toad... eat more frog legs!
Then they won't be a problem!
The green extreme used a simalar situation back in the early 80's at Algodones Dunes also known as Glamis and Buttercup. Some endangered foo foo bird was laying it's eggs on shifting sands. It was a dumb bird and doomed from it's own stupidity! Yet they could not document ONE bird or egg being hurt or killed by an off road vehicle...