showed that human toxicity was also most sensitive by resulting in a decrease of 27.4%,

while acidification and eutrophication decreased by 6% and ozone depletion by 4.0%.

Increasing and decreasing the rate of demolition resulted in no significant change in

impacts.

Commuting Distance

 Decreasing and increasing the commuting distance of 20 miles assumed in the

baseline case by 5 and 10 miles and in the number of people/car from 1 in the baseline

case to 4 tested for their sensitivity on the impacts from the 100% Manual scenario. The

importance of carpooling to the site by increasing the number of occupants to four was

evident by a decrease in eutrophication by 561%, in acidification by 77.5%, and in

human toxicity by 39%. Less dramatic results were observed with increasing the driving

distance by 5 miles, where the largest changes were observed in impacts on

eutrophication, acidification and human toxicity (2.12%, 0.290% and 0.146% increases,

respectively).

Recycling

 When recycling was removed from the scenarios involving manual methods,

acidification, eutrophication, and ecotoxicity decreased as much as 23.5%, 36.4% and

77.9%, respectively (for the 100% Manual scenario).

Transportation Requirements

 Driving distances for transportation of demolition equipment, salvaged material,

recycled material and landfill material, for moving equipment to the woods, felled wood

from the woods to the mill and boards from the mill to the store or site were increased

and decreased by 5 and 10 miles from their assumed transport distances (listed in the

Assumptions and Limitations section). Most of the emissions categories did not increase