East Area CSO Tunnels Project Schedule

1.	Notice to Proceed	June 2004

2.	Mobilization and site preparation:	Three Months

	(includes site-specific work such as:
	Moving in and setting up staff ande crew facilities (trailers)
	Moving in heavy equipment (front end loaders, backhoes, etc.)
	Erecting silt fences, other erosion and sediment control measures
	Clearing and grubbing)

3.	Shaft Construction	8 - 10 months

	Truck traffic as rock and soil are removed and hauled away
	Very little noticeable construction activity on the site (most work is underground)
	Occasional blasting
	Shafts are the main point for material entry and exit

4.	Install Tunnel Boring Machine and begin boring	May 2005 (18-20 months)

	Very little noticeable construction activity on the site (most work is underground); however, may involve moving some of the construction activities to the next shaft location; shafts are the main point for material entry and exist.
	No blasting
	Truck traffic as rock and soil are removed and hauled away
	Tunnel is lined as you go

Milestone Completion Date for East Tunnel		January 2007