Construction projects pose enormous challenges to not only finish
within an owner’s schedule and budget, but to also eliminate and
minimize harmful impacts to the environment. Construction has
significant impacts on the natural environment ~Hendrickson and
Horvath 2000!. Even a minor impact, such as a small release or
spill of a hazardous substance, can cause a health or environmental
threat and lead to costly cleanup activities. In many instances,
a company’s impact can be attributed to the lack of an adequate
environmental management system ~EMS!. An increasing number
of construction firms are becoming certified to international standards
worldwide, especially the International Organization for
Standardization ~ISO! 14001 series, which provide guidelines for
implementing an EMS.