Union Gas Ltd Cross Bore Safety Program TSSA

Union Gas Ltd. Cross Bore Safety Program TSSA Overview Presentation November 10, 2011

2 Sewer Safety Inspection (SSI) Program • Locate sewer and gas lines in response to a sewer line blockage prior to blockage removal tools being used. Sewer Safety Investigation Program • Planned video investigation of high risk / high priority sewer lines to potentially locate legacy cross bores New Installation Program • Process and procedures to be used to ensure that new cross bores are not created when using trenchless technology Education and Awareness Program • Municipalities • Industry (plumbers, sewer companies, rental companies etc) • Public (homeowners, businesses, institutions etc) Canadian Gas Association and Enbridge UGL Cross Bore Safety Program Union Gas. For the energy.

UGL Cross Bore Safety Program: Overview • Cross Bore Program Development: started in November 2010 - completed early 2011 • Vendor Selection: Spring 2011 • Implementation: started in Summer 2011 • • The Cross Bore program has been implemented in all Union Gas areas except Eastern District (Port Hope to Cornwall area) • The Sewer Safety Inspection process has not been implemented in this area due to difficulty arranging for a qualified vendor to support • Interim procedures are in place to manage cross bore incidents; a vendor to support the program has been selected and should be trained / operating in early 2012 Communications: Started Spring 2011 • Internal communications are complete • External communications plan is underway and continuing • UGL Program is aligned with Enbridge program and CGA White Paper • UGL Cross Bore Program represents an estimated annual investment of Union Gas. For the energy. $1. 825 M in O&M and $1. 1 M in Capital.

4 Sewer Safety Inspection (SSI) Program • Locate sewer and gas lines in response to a sewer line blockage prior to blockage removal tools being used. Sewer Safety Investigation Program • Planned video investigation of high risk / high priority sewer lines to potentially locate legacy cross bores New Installation Program • Process and procedures to be used to ensure that new cross bores are not created when using trenchless technology Education and Awareness Program • Municipalities • Industry (plumbers, sewer companies, rental companies etc) • Public (homeowners, businesses, institutions etc) Canadian Gas Association and Enbridge UGL Cross Bore Safety Program Union Gas. For the energy.

Sewer Safety Inspection Process Home Owner / Plumber / Municipality • Report Sewer Blockage 5 Ontario One Call Locate Service Provider (LSP) • Dispatches Locate Service Provider (LSP) • Locate: • Sewer Lines • Gas Lines • Other Utilities if required Video Inspection Provider (VIP) • Video Inspect Sewer Line • Identify Cause of Blockage Union Gas Limited • Excavate Site • Identify Sewer Cross Bore • Repair & Remediate Sewer Cross Bore Union Gas. For the energy.

Sewer Safety Inspection Program UGL GTEL QX TBD GTEL/Benko Robinson/PVS Union Gas. For the energy.

7 Sewer Safety Inspection (SSI) Program • Locate sewer and gas lines in response to a sewer line blockage prior to blockage removal tools being used. Sewer Safety Investigation Program • Planned video investigation of high risk / high priority sewer lines to potentially locate legacy cross bores New Installation Program • Process and procedures to be used to ensure that new cross bores are not created when using trenchless technology Education and Awareness Program • Municipalities • Industry (plumbers, sewer companies, rental companies etc) • Public (homeowners, businesses, institutions etc) Canadian Gas Association and Enbridge UGL Cross Bore Safety Program Union Gas. For the energy.

Sewer Safety Investigations §~1500 + investigations by end of 2012 § High Risk Areas § Cross Bore found, shallow sewers, elevated lawns, no basements etc. § High Priority Areas § Schools, Hospitals, Nursing homes etc. 8 Union Gas. For the energy.

9 Sewer Safety Inspection (SSI) Program • Locate sewer and gas lines in response to a sewer line blockage prior to blockage removal tools being used. Sewer Safety Investigation Program • Planned video investigation of high risk / high priority sewer lines to potentially locate legacy cross bores New Installation Program • Process and procedures to be used to ensure that new cross bores are not created when using trenchless technology Education and Awareness Program • Municipalities • Industry (plumbers, sewer companies, rental companies etc) • Public (homeowners, businesses, institutions etc) Canadian Gas Association and Enbridge UGL Cross Bore Safety Program Union Gas. For the energy.

New Installations Procedures Enhanced pre-work procedures developed and implemented in spring of 2011 to be used prior to trenchless technology install • Pre-work form now includes: • Identification of potential risk factors • Sketch of area to identify location of utilities and site features • Identification of sewer system depths (basement access, sonde locate or • Union Gas. For the energy.

New Installation Procedures • 0. 8 m Foundation Wall 0. 5 m 2. 4 m Grade Gas Line Basement Floor Sewer Line 11 Sewer line exiting house must have required depth separation of proposed gas line, or • New location of gas line required to ensure separation • Sonde or video sewer locate, or ‘daylighting’ of intersection area required • Avoid trenchless technology for install Union Gas. For the energy.

FOR YOUR SAFETY Form 001 (Rev 001) Natural gas lines have recently been installed or replaced in your neighbourhood. If you experience sewer problems, call: Ontario One Call at 1 -800 -400 -2255 or www. on 1 call. com WARNIN G PLUMBERS/ DRAIN CLEANERS Ensure this is not a SEWER CROSS BORE DO NOT use line clearing tools such as a motorized auger or water pressure tool to clear blockages outside the building wall prior to obtaining a SEWER SAFETY LOCATE If you have called a plumber / drain cleaner, please inform them of the information on this tag Ontario One Call 1 -800 -400 -2255 or www. on 1 call. com IMPORTANT SAFETY MESSAGE Front Union Gas. For the energy. Back

Sewer Safety Inspection (SSI) Program • Locate sewer and gas lines in response to a sewer line blockage prior to blockage removal tools being used. Sewer Safety Investigation Program • Planned video investigation of high risk / high priority sewer lines to potentially locate legacy cross bores New Installation Program • Process and procedures to be used to ensure that new cross bores are not created when using trenchless technology Education and Awareness Program • Municipalities • Industry (plumbers, sewer companies, rental companies etc) • Public (homeowners, businesses, institutions etc) 13 Canadian Gas Association and Enbridge UGL Cross Bore Safety Program Union Gas. For the energy.

Education and Awareness Industry (Plumbing/ Drainage Companies) Customers 14 Municipaliti es Union Gas. For the energy.

Industry Communications • • Late July 2011: • Direct Mail to ~ 1000 Plumbing and Drainage companies across the areas Union Gas serves (companies that would potentially perform sewer clearing services). • Letter and brochure that outlined safety risk and the new Union Gas Cross Bore Program Sept 2011 – Present • Follow up calls and in person training sessions with Plumbing and Drainage Companies across the areas Union Gas serves. • Additional training information left with companies (powerpoint training presentation, brochures etc. ) Union Gas. For the energy.

Customer Communications • • July – August 2011: • Direct Mail to 24, 000 homes that had a new conversion or replacement gas service installed in the past 5 years. • Included yellow ‘Cross Bore Safety Tag’ for customer to hang near sewer cleanout (see next slide) Spring and Fall 2012 • Bill inserts to all customers • Targeted newspaper ads Union Gas. For the energy.

FOR YOUR SAFETY Form 001 (Rev 001) Natural gas lines have recently been installed or replaced in your neighbourhood. If you experience sewer problems, call: Ontario One Call at 1 -800 -400 -2255 or www. on 1 call. com WARNIN G PLUMBERS/ DRAIN CLEANERS Ensure this is not a SEWER CROSS BORE DO NOT use line clearing tools such as a motorized auger or water pressure tool to clear blockages outside the building wall prior to obtaining a SEWER SAFETY LOCATE If you have called a plumber / drain cleaner, please inform them of the information on this tag Ontario One Call 1 -800 -400 -2255 or www. on 1 call. com IMPORTANT SAFETY MESSAGE Front Union Gas. For the energy. Back

Municipal Communications • • June-July 2011: • Direct Mail to ~ 400 Municipalities where Union Gas supplies natural gas • Letter that outlined safety risk and introduced the new Union Gas Cross Bore Program Sept 2011 – Present • Presentation / training session with municipalities to outline safety risk and the Union Gas Cross Bore Safety Program • Union Gas. For the energy.

Questions… Wes Armstrong; Director, Distribution Operations Union Gas Ltd. 519 -436 -5287 warmstrong@uniongas. com Jeff Hodgins Manager, Utility Cross Bore Program Union Gas Ltd. 519 -667 -4271 jhodgins@uniongas. com Union Gas. For the energy.