Quote Originally Posted by CO Hugh View Post
Yikes, isn't that the 404 permit?

Dynamite!!!!
If it is considered a "permanent" waterway then I belive a 404 would be required, not sure on a temporary/ occasional drainage.
Get rid of the CMP(corrogated metal pipe) if you can, they eventually will rot out. A CBC (concrete box culvert) will last forever and be less likely to accumulate debris. That CMP is way too small for that deep of drainage, I would imagine given the depth of the wash it has the capability of draining a pretty large area. An engineering report would be wise, if not required.
Check into recycled concrete instead of roto millings, last I knew it was about half the price of millings.
You have already gotten a topo of the area, now figure your length x width of your proposed drive and the elevation changes.
Over a 5k' run, that is a whole lot of tonnage to move.
Ain't gonna be cheap.
I will come run a loader, backhoe or blade for you.