A conversation last weekend was discussing these household waste sorting schemes. I was told that in Leeds (Yorkshire, England) everything is collected separately, but once it gets to the depot, it all gets dumped into the same skip and dumped in the landfill site. That is- all except the paper, which is mashed up and compressed into large blocks. These are then used to build retaining wals at the landfill site, to keep the rest of the waste contained.
Quack!
GtD.