Location: Kavacık-Pasabahçe-Beykoz, Istanbul / Turkey
Client: İSKİ - İstanbul Water and Sewage Authority
NTF Scope: Detailed Design and Construction
Construction Start Year: 2005
Completion %: 95 %
Completion Year: 2010
Estimated Cost: USD 26,5 million

Purpose:

• Collection of Waste Water from Beykoz District and
  Conveyance to Paşabahçe Waste Water Treatment Plant

Project Highlights:

• 7,200 m / 2.2 m TBM Tunneling
• 1,800 m / 1.2 m Hand Driven Tunneling
• 12 Each 7.5 m Main Tunnel Shafts
• 8 Each 5.0 m Connector Tunnel Shafts