Brian Thorogood P.Eng General Manager

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1 Brian Thorogood P.Eng General Manager

2 Many water pipes are now reaching the end of their useable lives 6 tuberculated water main. Photo by Envirologics Water main break and repair. Source: Google Maps These aging, deteriorated pipes are often congested with deposits, leaking and too often failing!

3 Impact to Municipal Owners Deposits create poor water quality, reduce service and fire fighting flows and increase pumping demand Leaks and failures increase pressure on water supply, often create service outages and can damage other infrastructure Are these issues impacting your municipality or industry? Photos by Envirologics Source: Associated Press image by Stephen McKay

4 Good News! Trenchless coatings and linings offer cost effective renewal solutions that extend the pipe s life CIPP SIPP Photo by Envirologics Photo by Envirologics Applied to the pipe once all internal deposits and corrosion are removed They keep the pipe healthy and corrosion free!

5 Examples of Current Cleaning Methods American Water Works Association (AWWA) Manual M28 Drag Scrape Power Bore Water Jet Source: AWWA

6 Current methods can foul thousands of gallons of clean water and may require containment and treatment! Containment and disposal methods are often dependent on pipe contents and infrastructure owner requirements They leave the pipe wet and further surface preparation may be required Fouled water and deposits expelled from water main during power bore cleaning Photo by Envirologics

7 The Goal A Clean and Prepared Pipe Left cleaned pipe Right cleaned and prepared Clean reduces stress concentration points in applied liner Prepared High level of clean, dry surface ensures liner bond to pipe wall and service connections for long-term, leak-free performance 7

8 Tomahawk System Developed by Envirologics Engineering Inc. Patented Tomahawk System Standard Vacuum Truck In-ground water main up to 450 long

9 Tomahawk System Process Overview Click here to view video from PDF

10 Tomahawk Advantage Waterless, dust-free, environmentally friendly, trenchless process Fast, 2-3 hours to clean pipe section Removes tuberculation and old bitumen or coal tar linings Superior clean and dry surface preparation Dried pipe allows for immediate liner application

11 Small 4 x6 Access Pit Photo by Envirologics Trenchless water main rehab with minimal surface disruption Dry, dust free process Small footprint vs dig and replace No service bypass installed

12 Photos by Envirologics

13 Cleaning progression Tuberculation Partial tuberculation removal Full tuberculation removal, bitumen liner visible

14 Preparation progression Bitumen liner being removed Partial liner and graphitic corrosion removal Fully prepared for liner bonding

15 Concurrent Cleaning, Drying and Inspection After initial cleaning, the patented Tomahawk Scout is instantly deployed Airstream driven, integrated CCTV camera and abrasive deflector Photos by Envirologics

16 Concurrent Cleaning, Drying and Inspection Visually inspect and target clean along pipe, at joints and around service connections Click here to view video from PDF Visually inspect and draw trapped moisture and debris from joints, crevices and service connections Photos by Envirologics Other inspection and condition assessment technologies such as PICA Ferro scope RFT, can be utilized following cleaning

17 Clean and Prepared Surfaces Picture shows a pipe as inspected by Tomahawk Scout after pipeline cleaning The pipe wall has been prepared to a NACE No. 4 equivalent surface Green arrows indicate white pockets where graphitic corrosion has been removed The service connection was target cleaned using the Scout to a NACE No. 3 equivalent surface for superior liner bond at this crucial location Click here to view video from PDF

18 Waste Capture The cleaning process is closed, Tomahawk unit connected to one end of pipe, vac truck to other Dust, debris and cleaning stone are captured, maintaining a dry, clean and safe worksite Vac truck on site during Tomahawk Cleaning Photo by Envirologics Eliminates the visual impact of the unpleasant waste that is being released from water mains to local customers, residents and workers! Allows for ease of disposal

19 Dry vs Wet Waste Up to 98% reduction by volume Stone and debris captured by vac truck after cleaning 6 pipe sections Represents 30 to 50% of average truck capacity Result: Less waste by volume means vac truck can stay working on-site for longer periods Photo by Envirologics

20 Cleaning Results

21 Corrosion and Coal Tar Liner Removed from 6 Cast Iron Pipe Photos by Envirologics

22 Tuberculation Removed From 6 Unlined Cast Iron Pipe Photos by Envirologics

23 Tuberculation Removed From 8 Unlined Cast Iron Pipe Photos by Envirologics

24 Tuberculation and bitumen removed from 6 water main using the Tomahawk System followed by a 3M Scotchkote Pipe Renewal Liner 2400 application Achievements: Improved water quality Hydraulic capacity restored Reduced power consumption to pump water Decades of additional service Photos by Envirologics

25 Tomahawk Cleaning Street View Click here to view video from PDF

26 Proven Cleaning Capability 100mm (4 ) to 300mm (12 ) pipe Cleaned up to 135m (450 feet) per pipe segment Up to 40% tuberculation/encrustation One 22.5 elbow per line segment Surface preparation up to NACE No. 3 equivalent National Association of Corrosion Engineers

27 Brian Thorogood P.Eng Phone: (800) Follow us on YouTube at Envirologics

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