Northwest Technical Luncheon – Calgary, AB
Date: Thursday, May 22, 2025
Time: 11:30 AM – 1:30 PM
Location: Danish Canadian Club | Tivoli Room; 727 11 Ave SW Calgary, AB T2R 0E3
Cost: $20 for Members** | $40 for Non-Members**
ARROW Utilities (formerly Alberta Capital Region Wastewater Commission) identified 3.2 km of 1350 mm diameter concrete sewer pipe in need of repair or replacement. CIPP lining was selected as the rehabilitation method. The pipe alignment runs through an environmentally sensitive area and is in close proximity to residential developments in other areas. The project was planned to minimize liner installations and resulting environmental and social impacts. A unique process, over the hole wetout (OTHW), was required to accommodate the longer liners required to minimize access locations. Wetout or impregnation is the process by which the resin is inserted into a dry liner, making it ready to install. For this process, the tube is transported to site dry, where a mobile wet out facility is constructed. This is currently one of few OTH installations undertaken in Western Canada. This presentation describes the project background, tendering processes, planning, design, and installation with the OTH system.
Speaker Introduction: George Bontus, P.Eng.
George Bontus, P.Eng. is Director of Engineering with Insituform Technologies Limited. He is involved in all aspects of CIPP based gravity and pressure pipe lining throughout North America. George has been involved in research projects relating to material and installation techniques to understand and improve CIPP liners. He is active in several AWWA pressure pipe rehabilitation related committees including Chairing development of the new Sliplining Standard. He is currently Chair of NASTT NW Chapter and an approved Instructor for the NASTT CIPP Good Practices Course and the Introduction to Rehabilitation Course. George is active on several NASSCO committees including Inserted Hose Standards and Pressure Pipe committees. He is a professional engineer registered in six Canadian provinces.
IMPORTANT INFORMATION – If you are an active member of NASTT, you will be asked to pay the differed $20 attendance fee at the door of this event using cash or check. If you are NOT an active member of NASTT, you will be asked to pay the differed $40 attendance fee at the door of this event using cash or check. Checkout will show a $0 balance, but this is simply because payment is deferred.
