I have used one of the Sonoma County facilities recently, pass through recycling bins were nice as three to or five vehicles could come and go. trailers, of which there were many, were still an issue. The dump on the concrete stalls were cool ( literally as they were in a large building, because staff could pull out stuff, wood,  furnture, metals and return these to be recycled---and because you were weighed for these they part of your cost. But it was maybe twenty acres all told, very long lines, long waits, and expensive. There were easily thirty people working the day I was there.