Our municipal water pipes are reaching the end of their useable lives

Cities throughout North America have 100s of KM’s of aging, congested pipes

Example of tuberculation and bitumen found in potable water pipes

Why does this matter?

• Service outages • Damage to infrastructure • Poor water quality • Reduced fire flows • Increased energy costs to

pump water through pipes

Good News: Trenchless coatings and

linings offer cost-effective renewal solutions

They are required to keep the pipe strong, healthy and corrosion

free!

However: all these solutions require

that you first clean and prepare the pipe.

Foam Pigs

Current Cleaning Methods - AWWA M28

Drag Scraping

Power Boring

Water Jetting

Current Cleaning Methods – AWWA M28

Challenges:

• Foul a lot of clean water and generate wet waste

• Current methods can damage services connections,

joints and pipe wall due to high forces involved

• May requiring multiple passes to achieve results

• Linings such as coal tar or bitumen are not fully

removed

• Pipe may be cleaned but not fully prepared for liner

bond

8

• Prevent liner leaks and structural failures • Clean – reduces stress concentration points in

liner • Prepared – high degree of surface cleanliness

and dryness to ensure liner bond to pipe wall and service connections

Left – cleaned pipe

Right – cleaned and prepared, ready for liner bond

Clean and Prepared Pipe

Tomahawk™ System Innovative Pipeline Renewal

In-ground watermain up to 450’ long

Standard Vacuum Truck

Patented and patent-pending Tomahawk™ System

Click here to view a Tomahawk process overview video

Small 4’x8’ Access Pit

Debris Capture

• The Tomahawk process is closed, Tomahawk unit connected to one end of the pipe, vac truck at the other

• Eliminates the visual impact of waste being released from watermain during cleaning operations, especially to local customers and residents!

• Dust, debris and cleaning stone are captured by vac truck maintaining a clean and safe worksite

• Ease of disposal

• After initial cleaning, the patent-pending Tomahawk

Scout™ is instantly deployed without connection changeover to help prepare the pipe

• Airstream driven, integrated

CCTV camera and abrasive

deflector

Pipe Preparation Concurrent Cleaning, Drying and Inspection

Pipe Preparation Using Tomahawk Scout™

③ Vaculate trapped water or debris from service connections

② Draw (vaculate) pooled water and debris from joints and crevices

① Target clean along pipe, at joints, around service connections for improved liner bond

Fast Drying of Service Connection - Tomahawk Scout™

① Vaculating trapped water from a service connection

② Dry until ready for lining

• Time from ① to ② = 2 minutes • Check out vaculation videos at the link below,

http://www.envirologics.ca/tomahawk-scout

• Various calibers • Our stone is clean and dried

at high temperature • Verified bacteria free

Abrasive - Stone

Dry vs Wet - Waste Reduction

• Amount of stone and debris after cleaning 6 pipe sections

• 25 to 35% of average vac truck capacity?

• Truck can stay onsite all week without having to take waste to treatment site

Dry Waste

Cleaning Pilot Projects:

Tuberculation Removed From Unlined Pipe

CML – Tuberculation and Bio-film

Removes Tuberculation and Bitumen Liner

(same day return to service)

Same Day Return to Service

Tomahawk

No bypass piping installed Small 4’ x 8’ pipe access pits Minimal surface disruption

Click here to view the Tomahawk process from the

street during a same day return to service project

Advantage – Same Day Return to Service

No costly service bypass piping save up to 30% of project cost Minimal surface disruption, short duration reduces inconvenience to residents Reduction in project timeline no bypass piping setup, disinfection, approval, operation and teardown

Opportunity: Asbestos Cement Pipe Cleaning and Preparation

Before Cleaning: Bio film, small amounts of debris, loose wall material and moisture in pipe wall are visible

After Cleaning: Minimal moisture remains only

Pipe requires lining after cleaning and preparation

• Two pipe sections cleaned in one day under same day return to service conditions

• 100mm (4”) to 200mm (8”) pipe, increasing to 300mm (12”) in 2015

• Clean up to 135m (450 feet) • Up to 40% tuberculation • 22.5° elbows

Proven Capability (Validated)

Fast. Dry. Bonded.

Phone: (800) 267-9810 Follow us on Twitter @TomahawkWater

Follow us on Linkedin //linkedin.com/company/envirologics-engineering