Emergency Non-Competitive Contract with Clearway Construction Limited to Rescue a Micro-Tunneling Boring Machine on Old Mill Drive for Assignment 5-01 Under the Basement Flooding Protection Program Phase 4

The issuance of this non-competitive contract was a matter of extreme urgency, as there was a significant health and safety hazard to the public. The micro-tunnelling boring machine which was being used to construct a new 900 millimetre diameter storm sewer along Old Mill Drive, was ensnared by unforeseen steel tiebacks which had been used to previously brace shoring from two mid-rise development excavations. The integrity of the roadway, nearby subway tunnel and surrounding infrastructure was undermined as a result of ground movement around the micro-tunnelling boring machine due to excessive ground water and poor soil conditions. This ground instability further led to the creation of a sinkhole in the work zone. The non-competitive contract was required to allow the contractor, Clearway Construction Limited, to review the impacted area and safely proceed with the micro-tunnelling boring machine rescue operations, including de-stressing and removing steel tiebacks; and jet and compaction grouting to stabilize the ground. This repair was deemed an emergency during Council Recess under Chapter 195-7.1 (G) of the Municipal Code. Reporting back to City Council is required in accordance with Municipal Code Chapter 195, Purchasing, Article 7, Section 195-7.4(B) where an emergency non-competitive contract exceeds $500,000.