or decrease significantly. Global warming, ozone depletion, acidification and

eutrophication changed the most as a result of elevated emissions resulting from

increased diesel fuel requirements. For example, when the mileage of an eighteen-wheel

truck was increased by 5 miles, eutrophication increased by 18.3%, acidification

increased by 2.38%, global warming increased by 2.11%, and ozone depletion increased

by 1.25%.

Time Required for Paint and Nail Removal

 According to the deconstruction team's past experience, 30% of the total time for

manual deconstruction involves paint stripping and denailing the wood and thus use of

the generator. However, this time percentage was increased and decreased by 5 and 10%

to account for differences in methods and experience levels of deconstruction teams. The

results show that large changes in acidification, eutrophication and human toxicity occur

when the generator times for paint stripping and denailing runs were altered.

Acidification increased the most, 106%, when the time for material preparation was

increased by 5%, while eutrophication and human toxicity impacts increased by 48.5%

and 26.1%, respectively. Thus, the amount of time spent on material preparation can

greatly affect the environmental impacts that occur from manual deconstruction.

 Conclusions

 Of the three options considered, that involve salvaging and reuse within a 20-mile

distance yielded the lowest impacts. Both the CML 2000 and EDIP methods resulted in

significantly lower environmental and health impacts when manual methods of

deconstruction were used. Of the three manual scenarios considered with salvaging, the

100% and 44% Manual scenarios yielded, for the most part, the lowest impacts.

Compared to the scenarios involving manual methods of deconstruction, the 100%