reply to post by FosterVS
It looks to me like they have a small detention basin east of hangar 18.
So there could be a berm there where you indicated. I don't know enough about desert construction to comment with any authority, nor do I have a
degree in CE. But I have paid for such engineering. In more "normal" places (as in not the desert), they put a detention basin to catch the dirt
(silt) that is carried off with the water, then there is a drainage path to dump the water into a stream. [By retaining some water before allowing it
to flow, it reduces the storm surge.] But in the desert, they just dig the basin and that is that. I assume they figure the water will just evaporate
and/or flow into the ground.
They have a detention basin near the TTR "mancamp".
It is actually on the BLM property. To get to Mt. Diablo (which is just a small hill, not to be confused with California's 4000ft Mt. Diablo), you
drive the edge of this detention basin.
When you grade for construction, you have to do something with the dirt. [Too bad the infamous nuclear tunnel bore machine that vaporizes dirt
doesn't exist.] Whatever you do with the dirt, you can't leave it in a state where it will erode away. [Assuming Groom isn't using the "we don't
need no stinkin' badges philosophy.] One solution is to fill a hole. The other is to pile the dirt with a 2:1 slope, which is very stable. [Think of
the sands in an hour glass. It wasn't the Vulcan mind meld that made so many civilizations build pyramids.] Since that dirt pile doesn't accomplish
much of anything, I think they just piled the dirt there because it was the cheapest disposal solution. The third choice is to off haul the dirt,
which eats up a lot of diesel.
Though we don't have a view of the north side of the new hangar, it is pretty obvious there are doors on both sides. Most of the time, I assume they
use the door we can't see from Tikaboo.
That berm isn't long enough to block much of the view from the runway. I suppose as a counter argument to the berm being used to block a view, we
know the base does put up fences.
In the case of this structure, then blocked the Tikaboo view and the view from the base. In security, they often speak of TNO (trust no one).