Introduction Scope and Genesis for Hanlan Feedermain Program Design Elements/Consideration

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1 Contractor Information Session June 28 th, 2012

2 Agenda Introduction Scope and Genesis for Hanlan Feedermain Program Design Elements/Consideration Contract 1 Contract 2 Contract 3 Lakefront Promenade Construction Overview of Geologic/Geotechnical Conditions Contracting Strategies Risk Management Provisions Permits Provisions Communication Strategy Next Steps

3 Introduction & Project Genesis

4 The intent of the meeting is to foster interest in the project from the construction community This session is not part of the formal prequalification/tender process Comments and questions are welcomed but official answers will only be provided during the prequalification and tender processes

5 Region of Peel Project Team Project Director Anthony Parente Deputy Project Director Darrin Dodds Project Manager South Bill Turner Project Manager North Matt Bennett Project Manager Property Lyle LeDrew Project Managers Distribution Troy Leyburne (South) Rick Wells (North) Administration and Public Affairs Coordinator Sandi LeFaucheur Communications Associate Kieran Scott

6 Consultant Project Team South North Program Manager Rob Burchell Project Manager Joe Sframeli Assistant Program Manager Jessie Gerwien Assistant Project Manager Stan Holden

7 Why is the Hanlan Water Project needed? To meet the water demands of future planned and approved Regional population growth, including the Mississauga city centre core To provide operational flexibility when existing Hanlan Feedermain needs to be temporarily shut off for inspection or repair Provide ultimate capacity for York Region Servicing Agreement

8 Project Overview 2400mm dia. Hanlan Feedermain 15 kilometres 1500mm dia. MCC subtransmission main 6 kilometres Distribution works, 600mm dia. and less 13 kilometres

9 Construction Objectives Maintain level of service in accordance with City, Region Environmental Assessment (EA) expectations in conformance to detailed traffic management plans Minimize impacts on residents and area businesses Minimize the time of construction at intersections Minimize traffic impacts to commercial driveways and minor intersections Minimize impacts on existing structures (bridges, roadways) Comply with Ontario Traffic Manual, Book 7 Comply with permits from MOE, MTO, CPR, CNR, TRCA/CVC

Launching Shaft Hanlan Feedermain Reception Shaft Mississauga City Centre

10 Contract 3 Contract 2 Contract 1 Hanlan Feedermain tunnel Hanlan Feedermain open cut Work already completed Work already completed or underway Hanlan Feedermain Launching Shaft Hanlan Feedermain Reception Shaft Mississauga City Centre Subtransmission Watermain open cut Mississauga City Centre Subtransmission Watermain tunnel

11 Division of Work

12 Work Divisions Contract 1 - Dixie Road \ Lakeshore Road Tunnel mm dia metres Contract 2 Dixie Road Open Cut mm dia metres Contract 3 Eastgate \ Tomken \ Cawthra Tunnel mm dia metres Tunnel mm dia metres Open Cut mm dia metres Open Cut mm dia metres

13 Contract 1 Overview

14 Contract 1

15 Contract 1 Approx. 50% Design Stage Contract 1 South scope Tunnel 5.8km of 2400mm dia. feedermain Construct 5 shafts Construct drain chambers Construct valve chambers Construct air release valves

16 Contract 2 Overview

17 Contract 2

18 Contract 2 Approx. 50% Design Stage Contract 2 scope Open cut 3km of 2400mm dia. feedermain Open cut 1km of 600mm dia. local distribution Construct 2 air release chambers Construct 2 drain chambers Burnhamthorpe Interconnection works installed

19 Feedermain: centre of Dixie Road Feedermain depth: 6.5 to 7m Local distribution: centre of Dixie Road within feedermain construction zone Local distribution depth: 1.8 to 2m

21 Contract 3 Overview

22 Contract 3 Shaft Locations

23 Lakefront Promenade Overview

24 Lakefront Promenade

25 Overview of Geotechnical and Geologic Conditions

26 Subsurface Investigation - Multi-phased Built on previous SI program during EA Contracts 1 & 2 37 borings in Phase I SI Program 13 borings in Phase II SI Program On-going Contract 3 58 borings for both FM and MCC Extensive Laboratory Testing Program

27 Overview of Geologic Conditions Fill Post-glacial and glacial sands and silty sands Clayey silt to silty clay tills Georgian Bay Shale Variable - ranges from granular to cohesive; 0.8 to 5 m thick Includes alluvial, deltaic / fluvial and lacustrine deposits; loose to dense SP, SM & ML; 0.5 to 7 m thick Stiff to hard CL-ML to CL material; abundant shale fragments and possibly cobbles or boulders; 0.5 to 3.5 m thick Shale with thin interbeds of limestone and siltstone

28 Contract 1 Geotech Groundwater Depth Range 2 to 3m Prominent transition zone between overburden and shale called the glacial till/shale complex extensive weathering Typically less than 10% interbedded limestone in shale matrix Shale UCS Range 13 MPa RQD Range 70% to 100%, Avg. 90% (in tunnel zone) Time Dependent Deformation Swelling and Stress Relief expected.currently being analyzed

29 Contract 2 Geotech Groundwater Depth Range 2 to 8m Prominently sand to silty clay Minimal to no shale excavation

30 Contract 3 Geotech Tomken Road Northern 2.5km: Shallow (<3m) overburden above Shale Bedrock consisting of: Pavement Fill, mixed composition; 0.2m to 2m thick Native Soil: Glacial till (silty clay, clayey silt) very stiff to hard. Southern 1.5km: Overburden cover 12m to >40m above bedrock consisting of: Pavement or Topsoil Fill, Mixed composition, 0.7m to 2m thick Native Soils: Silty Clay Till 1 m to 5 m thick, very stiff to hard Cohesionless Sandy Silt Till, very dense, bouldery Interbedded sand, sand and gravel layers (2),dense

31 Contract 3 Geotech Tomken Road (continued) Groundwater table generally at ground surface, occasionally 2m to 3m below ground surface Bedrock Georgian Bay Formation Shale with interbedded siltstone and limestone layers. Lithology: (Approximate) 60 % clay minerals; 30% quartz; 10% calcite. Percent of siltstone and limestone layers (per 1.5m core run): Range: 0 to 80 %; Average 14 % Thickness of siltstone and limestone layers: 25 mm to 600 mm

32 Contract 3 Geotech Bedrock (continued) Rock Quality Designation (RQD) Range;18-100% (Very Poor to excellent); Average 91 % (excellent) Rock Mass Rating (RMR): Range 47 to 79 (Fair to Good) Uniaxial Compressive Strength (UCS) From Laboratory UCS tests: Shale MPa, Average 20.9 MPa Inferred from Point Load Index tests: MPa; Avg MPa Limestone: from Point Load Tests; MPa, Avg. 147 MPa

33 Contract 3 Geotech Bedrock (continued) Other rock properties: - Low durability - High In-situ horizontal stresses MPa causing overbreak - Time Dependent Deformation causing Rock squeeze - Gas, the rock formation contains combustible gas - Generally low hydraulic conductivity (permeability) - Contains Shear zones causing local instability and heavy ground water infiltration

34 Contract 3 Geotech Eastgate Parkway Sequence of overburden soils: Fill 1 to 3 m Silty Clay Till, 1 to 10 m thick Cohesionless Sandy Silt Till, very dense, Thickness explored only at three (3) locations where 25 to 30 m Bedrock Georgian Bay Formation Depth to bedrock known only at two locations where 32 to 35 m below ground surface Ground Water Table at shallow depths.

35 Contract 3 Geotech Cawthra Road Subsurface Profile: Rathburn Road to 700 m north; Shallow overburden of Fill and Silty Clay Till; Shale Bedrock at 4 to 8m below ground surface. 700 m North of Rathburn to Highway 403; Shallow Fill underlain by Clayey Silt Till to the full depths of the boreholes (~7m) Ground water table at depths < 2m

36 Contracting Strategies

37 Risk Management Overall Project Risk Management Contractual Risk Management Mechanisms Specific Risk Management Provisions

38 Permit Provisions Permits Provisions Permit to Take Water (MOE) QEW, 401 Crossings (MTO) Creek Crossings (TRCA, CVC) Rail Crossings (CN, CP) Pipeline Crossings (various institutions) Bus Rapid Transit (Eastgate) Crossing Various property requirements (permanent and temporary)

39 Communication Strategy Public Outreach Program Overview Ambassador Program Business and Institutional Care Active paid-duty officers Contractor Awareness Training Public Information Centres Website (hanlanwaterproject.ca) Twitter

40 Next Steps Prequalification One Document Three Contracts Tentative Schedule Contract 1 Q Contract 2 Q Contract 3 Q1/Q In-service Q2 2016

41 Thanks you for your time! Comments

Chapter 12 Subsurface Exploration

Page 12 1 Chapter 12 Subsurface Exploration 1. The process of identifying the layers of deposits that underlie a proposed structure and their physical characteristics is generally referred to as (a) subsurface