General Condition 12 in the MMCD deals with the discovery of unexpected hazardous materials during the course of a construction project.
The Master Municipal Construction Documents were specifically designed to create contracts for sub-grade municipal infrastructure such as sewers, waterline and other utilities. The very nature of this type of work implies unknown conditions. Since it is not practical to do geotechnical investigations continuously along the proposed route of a new project, we must expect surprises. One type of surprise is the discovery of unexpected hazardous materials.
A core philosophy supporting the MMCD is that risk should be apportioned based on who can best manage it. Also, we do not want bidders to have to include large contingency amounts for unknown risks on every tender. So how do we put these objectives into effect concerning hazardous materials? Find out in this 9-minute presentation by Brian Weeks.