Project Facts

• 1 - 11'-0" dia. x 210 LF drop shafts

• 1 - 13'-6" dia.  x 210 LF ventilation shafts

• 220 LF of overburden drilling - fully cased

• 220 LF of rock drilling

Scope

• Installation of a drop shaft and ventilation shaft for a combined sewer overflow
• Removal of overburden material using a crane mounted drill and slurry
• Removal of rock using a reverse circulation drill