R.W. Beck is nearing completion of a single stream study for the American Forest and Paper Association (AF&PA). We examined several single stream programs, including those that were once source-separated (two stream or more) and converted to single stream, as well as those that originated as single stream. Some programs excluded glass. As part of the study, bale tests were performed at mills to test for quality. Over 200 samples were taken from both single stream and two-stream programs from 60 communities or metro areas around the country.