Well in my area, which is about 20 miles southeast, most of the gold I have found has been pretty recent flood gold. Seems the pay layer (if you can call it that) is near the bottom of the overburden and fines mixed in throughout.
From what I have seen of the topography near CH, if you are in an old creek that is not a flood controlled one, the gold should be deeper, more like out west.
You will probably run into a large amount of black sand too. I have found decent amounts where you can find black sand on top of a bluish clay. The creek I hit is a rain creek and only allows sluicing after storms.
I run BGTs, a mini and a new 36" prospector.
If you have an area that you can prospect gimme a shout and I can demo the BGTs for you. I work in RTP, so I can probably come by after work some night or can do weekends off and on depending on baseball.
Chapel Hill is right on the edge of the slate belt and there is historical mines around the area, so there should be some color all around.
Denton is smack dab in the middle of good gold.