Grassy!
From reading other reviews, this is the best you'll find in the area. Bare bones camp sites, mostly in the open. I found a nice space on a grove of trees, and there were a few others like it. $6 per night! Free showers! The water was a tad sulfuric and had a slimy feel, but I feel refreshed and I don't smell like the road. A little bit of high speed trucker freeway tire noise in the near distance, but overall a great overnight experience. FYI, I pulled in at 2am in the height of summer, and there were plenty of sites to be had.