London Street Generating Station Expansion ProjectJune 25th, 2012

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LONDON STREET GENERATING STATION EXPANSION PROJECT

Peterborough Utilities Inc.

About Peterborough Utilities Inc.• Peterborough has a long history of renewable energy projects. It was one of the first

places in the country to begin generating waterpower (even before Niagara!).

• Since 2000, Peterborough Utilities Inc. (PUI) has managed electrical generation andretail services under the umbrella of the Peterborough Utilities Group of Companies,which is owned by the City of Peterborough.

• PUI currently owns and operates three waterpower generating stations (GS): LondonStreet GS, Campbellford-Seymour GS and the recently completed Robert G. Lake GS.PUI also owns and operates the Lily Lake Solar Farm and is in the process ofconstructing the Bensfort Road Landfill Gas Generation project.

• PUI sees electrical generation as a key area of growth for the company and is pursuingprojects with a focus on renewable and clean energy resources including solar,waterpower, and landfill gas.

Making Ontario GreenerOntario has firm targets to reduce greenhouse gas (GHG) emissions to 6%below 1990 levels by 2014, 15% by 2020 and 80% by 2050. Ontario is theonly jurisdiction to regulate a phase-out of coal-fired electricity. This boldaction represents one of the largest single GHG reduction measures inNorth America and will reduce our carbon footprint from electricity by 75%.

The London Street Generating Station Expansion Project is in keepingwith provincial policy to retire coal-burning electricity generatingstations and to provide more of Ontario’s electricity mix through “green”energy, specifically waterpower. Electricity generated by the project willbe fed into the provincial grid under a Power Purchase Agreement withthe Ontario Power Authority. Once constructed, the facility will continueto provide reliable power should there be a power disruption in the localdistribution system.

The London Street GS was originally built in the 1920’s and still uses some of the originalequipment. The facility was acquired by the City of Peterborough from Quaker Oats in1975.

PUI is proposing to construct a new 6 MW hydroelectric generating station adjacent to theexisting London Street GS, located on the Otonabee River in the City of Peterborough. Theproject is located at the eastern end of London Street, just north of the City’s downtownarea. The existing facility produces approximately 4 MW of power. If approved andconstructed, the total installed capacity of the facility will be approximately 10 MW.

The Proposed Expansion Project

PUI has retained Dillon Consulting Limited (Dillon) to undertake anenvironmental assessment for the project (Class EA). The Class EA isexpected to be complete in late 2012 with construction to followproviding final approval is obtained.

The existing London Street GS has been in service for nearly 90years and is approaching the end of its useful life. The new facilityshould extend the life of the old facility and will ultimately replace it.

The Proposed Expansion ProjectWhat is the Proposed Plan?

The new generating station will takepriority of the available water over theexisting generating station, due to itshigher generating efficiency.

Key components of the plan include:

• Construction of a new access road• Excavation of a new power canal and

tailrace• Construction of a new power house• Relocation of existing substation• Installation of automated gate in dam• Landscaping of site

Class Environmental Assessment

The Class EA is expected to be completein late 2012 with construction tocommence in 2013. The constructionphase is expected take 16 to 21 monthswith operations beginning in 2015.

Tentative Project ScheduleBackground Environmental Studies

2009 to Present

Pre-Consultation Ongoing

Data Collection and Analysis Ongoing

Notice of Commencement and Public Information Centre 1

June 2012

Public Information Centre 2 Sept. 2012

Notice of Study Completion Oct. 2012

Statement of Completion Dec. 2012

Start of Construction May 2013

Operations 2015Schedule subject to change.

Proposed LocationProposed Location of the London Street Generating Station Expansion

The Class EA ProcessThe Project is subject to the provisions of the Ontario Waterpower Association’s “ClassEnvironmental Assessment (EA) for Waterpower Projects” (April 2012). Pursuant to the Class EA,the project is considered to be associated with existing infrastructure.

The Class EA requires PUI to undertake an evaluation of the project to evaluate its potentialeffects to the environment and community and prepare a detailed Environmental Report. TheProject may also require review and approvals under the Canadian Environmental AssessmentAct (CEAA).

A comprehensive stakeholder consultation program for the public, government agencies, and FirstNations and Métis communities is planned for the project, including two Public Information Centres(PICs), project newsletters, a project website (www.pui.ca), etc.

For more information on Class EA for Waterpower Projects visit:

http://www.owa.ca/class-ea/

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Project BenefitsEnvironmental Socio-Economic Economic

• The footprint of the project is relatively small due to the ability to incorporate existing structures (e.g. dam and tail race).

• Minimized ecological footprint while maintaining existing water levels.

• Incorporation of modern environmental safeguards, including secondary spill containment in the new substation.

• A source of “green” energy to offset fossil fuel based generation.

• Securing a safe and reliable source of power in the event of a black out for residents, businesses and emergency facilities.

• Improved flood control measures downstream through the addition of an automated bypass gate and site grading.

• Improved aesthetics and landscaping for the east end of London Street.

• Maintaining the existing heritage of the original London Street GS.

• Creation of employment opportunities (especially during construction).

• Economic “spin offs” during construction (e.g. increased demand for local hospitality services and construction materials such as concrete).

• Increased revenue for the City of Peterborough through dividends issued by PUI.

• Will allow PUI to reinvest their assets to continue to develop more green energy projects.

Technology and Process

Source: Ontario Waterpower Association, 2012

How Does Waterpower Work?

1. Water flows in through an opening called the intake.

2. From the intake, water flows under pressure through apipe called a penstock*.

3. A turbine is located at the end of the penstock and theforce of the water turns the blades of the turbine whichthen turns the shaft inside the turbine.

4. The turbine converts water power into rotational powerand the shaft inside the turbine is connected to agenerator, which generates the electricity.

5. Once the water passes the turbine it flows through adraft tube out of the station and back into the river.

Waterpower is the production of electrical power throughthe use of flowing water. To create electricity from water,waterpower facilities use either a natural drop in elevationor create a drop using dams.

* In the case of London Street G.S., a penstock is not required, rather the concrete intake structure guides flow through the turbines.

Potential Environmental EffectsAll waterpower projects have the potential to negatively impact the environment. The Class EAprocess ensures that environmental evaluation and reporting takes place to document thepotential effects and propose mitigation measures. Preliminary results of the environmentalevaluation suggest the following:

• No wetlands, Areas of Natural and Scientific Interest(ANSI) or significant woodlands are located in theproject area; no protected areas or Provincial planswill be impacted.

• No records of Species at Risk were found for theproject area during studies commissionedpreviously by PUI.

• A Stage 1 archaeological survey of the property iscurrently being undertaken by a licensedarchaeologist to address the potential for artifacts.Project Location and Anticipated Zone of Influence

Potential Environmental Effects Cont…• There are no anticipated impacts to navigable waters on the

Otonabee River.

• The potential for wildlife habitat disruption is considered low.

• The amount of vegetation removal will be minimized.

• Short-term construction-related activities may result in increasedroad traffic, noise and dust, but long-term effects are not expected.

• Effects to surface water quality during the construction phase will beminor and short-term; steps will be taken to protect downstreamaquatic resources from the potential effects of erosion andsedimentation.

• Public water supply is not expected to be affected during projectconstruction or operations.

• There will be minimal visual impacts with implementation oflandscaping plan.

These issues will be addressed during the impact assessment phase of the project and mitigation measures will be proposed

View of the London Street Generating Station

View from the back of the dam Low flow behind the dam

Tailrace

View with Pepsi QTG in the background

View of the London Street Generating Station

Existing Facility Equipment Circa 1920 Canadian General Electric Generator Circa 1920

London Street Generating Station

Existing Switchyard

Site Layout

Before and After

The above is an artist’s rendering and is subject to change.

View of the Existing London Street Generating Station from London Street

View of the London Street Generating Station from London Street After Expansion

New Canal

Existing Powerhouse

New Powerhouse

New Tailrace Canal

Relocated Driveway

Relocated Switchyard

Thank You for Attending this Public Information Centre

Before You Leave• Sign-in at the front desk to ensure you receive

upcoming project updates• Provide feedback be completing and submitting a

comment form • Ask any questions you may have about this project

Next Steps• Comments received as part of the consultation will be

incorporated into the project, where possible.

• A second PIC is being planned for the project for September 2012. A final project layout, results of environmental studies and recommended mitigation measures will be presented at this time.

Contact InformationKaren McGhee, P.Eng.

Project Manager

McGhee-Krizsan Engineering Limited1959 Creston Place

Burlington, ON, L7P 2Y5Phone: (905) 331-9692

Email: LSGSexpansion@pui.ca

Joseph CarnevaleEnvironmental Consultant

Dillon Consulting Limited235 Yorkland Blvd, Suite 800

Toronto, ON, M2J 4Y8Phone: (416) 229-4646

Email: jcarnevale@dillon.ca

London Street Generating Station Expansion ProjectThank You For Attending

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