This is a weighted average of the various discounts available for presorting and barcoding.

The losses from giving the higher discount to all of the mailers that are already presorting are large and the savings from the additional presorting are small.

The presorting and the use of containers allow highly automated mail processing, both in bulk and piecewise, in processing facilities called bulk mail centers (BMCs).

If there was a requirement for the pre-sorting of waste through waste management plans, we could save raw materials and have less air pollution.