Organics and non-organics are then separated by a combination of mechanical and manual methods. The organics go through treatment that generally produces low grade compost. With a source-separated organics program, users separate their food and yard wastes from the rest of their garbage. A landfill or other disposal method is still needed for wastes that can't be handled by the processing plant. Back-up disposal is also needed when the facility is closed due to maintenance or unplanned closures.
Advantages Can divert a high volume of organic waste, but compost uses are likely to be restricted.
Disadvantages Technical, environmental, and financial risks are high. Mixed performance record elsewhere. Put or pay is a disincentive to waste reduction. If tipping fees are too high, waste may be taken to where fees are cheaper. Potential competition from any private organics facility that could open in the future.