Innovative solutions for the rehabilitation of lead service

connection lines and adjacent water mains

Objectives

• Restore lead service lines and eliminate risks

• Clean water main adjacent to the residence (s)

• Use a trenchless technology having a 25 year track record

• Use an award-winning water main restoration technology

• Generate + 75% savings compared to replacement

Acuro specializes in the rehabilitation of water and sewer service connections and inside

plumbing

Acuro and Exotec are teaming to provide unique trenchless services

to the potable water industry

Exotec specializes in the cleaning and hydraulic restoration of encrusted

water mains

Epoxy Barrier Coating

Work Steps 1 of 6

Project Evaluation

1. Location

2. Entry points

3. System configuration

4. Cost estimate

1. Shut water (interior valve or exterior curbstop)

2. Connect hoses to pipe

3. At the extremity of the pipe, install dust collector

4. Complete purge of the line using compressed air

Start of operations

Work Steps 2 of 6

Tracing

1. Trace all pipe

2. Measure lengths

3. Evaluate quantity of epoxy required

Work Steps 3 of 6

Cleaning with abrasives

1. Heat and dry pipe

2. Inject abrasives to remove all deposits inside the line

3. The line is now ready to receive the epoxy

Work Steps 4 of 6

Epoxy coating

1. Inject epoxy inside the line using compressed air

2. Cure from 4 to 12 hours

Work Steps 5 of 6

Final Verification

1. Pressure test and final check to ensure cleanliness and water tightness

2. NOTE: The epoxy fills small holes

3. NOTE: the epoxy spreads throughout the ENTIRE inside wall

Work Steps 6 of 6

Benefits

Some Projects…

HUGE Savings…

The method presented by Nu Flow is the only one accepted by DC WASA

Projects for Medical Centers…

Fresenius Medical CareJay PoswolskyDialysis Services Division-FDMS95 Hayden Ave.Lexington, MA 02420781 402-9000 Renal Care Group Mid AmericaJay Poswolsky & Marco ZeregaFour Westbrook Corp. CentreSuite 620Westchester, IL 60154 USA708 836-3821 Baptist Health CenterJoyce Blackerby Director of Real estateBaptist Health Systems817 Princeton Ave.SWSuite 112Birmingham, AL 35211

• No Excavation - QuickA few hours per service line restored

• Durability – Fills small holesTested to last 100 years, guaranteed for 10 years

• Low cost+ 75 % savings compared to replacement

• Non destructive - No demolitionLandscape and sidewalk stay untouched

• Safe Epoxy is NSF certified

Avantages

Sample Project Description

1. Survey project site including location of service connection lines, water main, hydrants and valves

Work Sequence

3. Evaluate ‘C’-Factor (Hazen-Williams coefficient)

OR

Video inspection of water main

Work Sequence

2. Identify lead service connection lines

4. Confirm water main structural integrity (breaks history, etc.)

5. Install temporary water supply for residents (if required)

6. Excavate access pit

7. Clean service line using Nu Flow

8. Clean water main using Exotec

Work Sequence

Water Main Cleaning and C-Factor Restoration

Veloce Plus

Before After

Preliminary preparation (a few days before start of work)

1. Public notices to residents affected by the work

2. Excavation of access pit by the utility

Work Steps 1 of 5

Start of Work

1. Measure static - dynamic pressure, test water quality and isolate water main

2. Remove one (1) meter long section of water main to insert cleaning equipment

3. Video inspection to document water main initial condition

4. Optional: Close service connections

Work Steps 2 of 5

Clean Water Main

1. Insertion of hose and low-pressured water

2. Remove sediments including those from the cleaned service connection line

Work Steps 3 of 5

Passivation

1. Following cleaning, video inspection of water main to document results

2. Replace one (1) meter long section

3. Inject passivation and disinfection solution

4. Soaking for 2-4 hours.

5. NOTE: Proprietary passivation solution prevents the occurrence of discoloured water following cleaning ENV EXOTEC PASS

passivation solution is NSF/ANSI Standard 60 certified

Work Steps 4 of 5

…back in service

1. Flush water main to remove passivation solution

2. Measure chlorine and turbidity

3. Open all valves and restore service to residents

4. NOTE: Lab test, if required, is optional

Work Steps 5 of 5

Safeguarding our infrastructure

THANK YOU

Toll free: 1 866 330-6832

www.acuro.ca www.exotec.ca