
Execution Process • 147
contracts. e nal solution divided Metro into 11 separate work packages.
e basic sequence logic for the nal solution is shown in Figure5.6.
e contracts were structured so that the site-work contract, including
the remediation of 154,700 tons of contaminated soil, was a prerequisite
to the start of pile-driving and all successive facility work. is structure
accommodated the special requirements for handling the contaminated
materials, including health and safety regulations. is method limited
risk by conning the remediation activities to one contract.
e remainder of the project was sequenced to coincide with t ...