[b] Office paper produces 0.53 metric tons of carbon equivalent (MTCE) per ton of paper, according to the USA EPA report Greenhouse Gas Emissions From Management of Selected Materials in Municipal Solid Waste, 1998, p26, here.

This amount is equal to 1.9 metric tons of CO2. The Environmental Energy Technologies Division of the U.S. Department of Energy indicate that there are about 220,000 paper sheets in a ton: http://eetd.lbl.gov/paper/ideas/html/copyfactsM.htm.

[c] According to the Environmental Energy Technologies Division of the U.S. Department of Energy, the manufacturing cost of virgin office paper is 17 Watt hours:
http://eetd.lbl.gov/paper/ideas/html/issues.htm.

[d] According to the Environmental Energy Technologies Division of the U.S. Department of Energy, the manufacturing cost of 100% recycled office paper is 12 Watt hours: http://eetd.lbl.gov/paper/ideas/html/issues.htm.