The Hiawatha Project – Challenges of Urban · Midtown Substation Energized October 2012...

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The Hiawatha Project – Challenges of Urban Construction The Hiawatha Project – Challenges of Urban Construction Joe Samuel PE, PMP, LEED AP Nathan Steward PE

Transcript of The Hiawatha Project – Challenges of Urban · Midtown Substation Energized October 2012...

Page 1: The Hiawatha Project – Challenges of Urban · Midtown Substation Energized October 2012 Construction Commences February-October 2012 Public Outreach & Design June 2014 Hiawatha

The Hiawatha Project –Challenges of Urban

Construction

The Hiawatha Project –Challenges of Urban

ConstructionJoe SamuelPE, PMP, LEED AP

Nathan StewardPE

Page 2: The Hiawatha Project – Challenges of Urban · Midtown Substation Energized October 2012 Construction Commences February-October 2012 Public Outreach & Design June 2014 Hiawatha
Page 3: The Hiawatha Project – Challenges of Urban · Midtown Substation Energized October 2012 Construction Commences February-October 2012 Public Outreach & Design June 2014 Hiawatha

Overview

Project Components Project Schedule Stakeholder Engagement Project Challenges

A. Urban Substation DesignB. Undergrounding Transmission Construction

Lessons Learned

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Page 4: The Hiawatha Project – Challenges of Urban · Midtown Substation Energized October 2012 Construction Commences February-October 2012 Public Outreach & Design June 2014 Hiawatha

2015 6th Largest Transmission Co. (US) Over 12,000 Employees Over 18,000 miles of transmission line Serving over 3 million customers

Who is Xcel Energy?

1900’s Rural Minnesota Utility

Company 19 employees 2.7 miles of transmission line Serving over 700 customers

Company Roots

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Page 5: The Hiawatha Project – Challenges of Urban · Midtown Substation Energized October 2012 Construction Commences February-October 2012 Public Outreach & Design June 2014 Hiawatha

Project Components

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1) Underground Transmission/Distribution – $26M - 1.5 miles Transmission (115kV)- 2 miles Distribution (13.8kV)

2) Hiawatha Substation - $14M3) Midtown Substation - $15M

Project Budget - $55M

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Page 6: The Hiawatha Project – Challenges of Urban · Midtown Substation Energized October 2012 Construction Commences February-October 2012 Public Outreach & Design June 2014 Hiawatha

Project Schedule

December 2014 Midtown Substation

Energized

October 2012

Construction Commences

February-October 2012

Public Outreach & Design

June 2014 Hiawatha West Substation

Energized

Spring 2009Route Permit Application

(RPA) Filed

January 2012MPUC Issues Project Permit

Spring 2010Certificate of Need

(CON) Filed

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Page 7: The Hiawatha Project – Challenges of Urban · Midtown Substation Energized October 2012 Construction Commences February-October 2012 Public Outreach & Design June 2014 Hiawatha

Substation Perspective –Permit Application

Hiawatha West – Hwy 55 Midtown – Portland Avenue

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Page 8: The Hiawatha Project – Challenges of Urban · Midtown Substation Energized October 2012 Construction Commences February-October 2012 Public Outreach & Design June 2014 Hiawatha

Stakeholder Engagement

Xcel Energy Regulatory Officials Elected Officials General Public

stakeholder_dynamics.wmv

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Page 9: The Hiawatha Project – Challenges of Urban · Midtown Substation Energized October 2012 Construction Commences February-October 2012 Public Outreach & Design June 2014 Hiawatha

Aesthetic Design ProcessPurpose

1) Ensure Substation final designs reflect community vision, values and ideas about aesthetics.

2) Designs are compliant with Route Permit and Certificate of Need orders established by MN PUC.

Advisory Work Group (AWG) Objectives1) Develop process for achieving AWG

purpose.

2) Oversee implementation of chosen process.

3) Liaise with community on chosen process. 4) Ensure final substation design options

balance community perspectives about aesthetics with design considerations and process parameters.

Xcel DesignTeam

Validates Aesthetic Design

Initial Evaluation & Ranking of

Community Aesthetics

AWG Evaluates& ConfirmsAesthetics

AWGInput

Technical & Financial

Evaluation

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Page 10: The Hiawatha Project – Challenges of Urban · Midtown Substation Energized October 2012 Construction Commences February-October 2012 Public Outreach & Design June 2014 Hiawatha

Stakeholder Engagement

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Urban Substation Design

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Page 12: The Hiawatha Project – Challenges of Urban · Midtown Substation Energized October 2012 Construction Commences February-October 2012 Public Outreach & Design June 2014 Hiawatha

Hiawatha Substation Site Map

Challenges Contaminated Soil Fiber /Rail

Relocation Landlocked

property LRT Vehicle Theft/Vandalism Multi-discipline

Team

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Page 13: The Hiawatha Project – Challenges of Urban · Midtown Substation Energized October 2012 Construction Commences February-October 2012 Public Outreach & Design June 2014 Hiawatha

Hiawatha West Perspective

Initial: (7) Feeders 118-14.3kV, (1) 70MVA

transformer Future:

(3) total 70MVA units (15) possible feeders

Commuter Rail

Regional Trail

Highway 55

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Underground Duct

Overhead T-Line

28th Street

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Hiawatha West Substation

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Page 15: The Hiawatha Project – Challenges of Urban · Midtown Substation Energized October 2012 Construction Commences February-October 2012 Public Outreach & Design June 2014 Hiawatha

Hiawatha West SubstationRendering

Actual

day rendering: view from the southactual view from the south

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Page 16: The Hiawatha Project – Challenges of Urban · Midtown Substation Energized October 2012 Construction Commences February-October 2012 Public Outreach & Design June 2014 Hiawatha

Midtown Substation Site Map

Challenges SHPO Protected Slope Land Acquisition Soil Conditions Residential Land Use Multi-discipline Team

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Regional Trail

Residential Land Use

SHPO SLOPE

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Midtown Perspective

Initial: 118-14.3kV, (1) 70MVA

transformer (7) Feeders

Future: (2) total 70MVA units (14) possible feeders

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Midtown Substation

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Midtown Substation Rendering

Actual

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Project Challenges

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Midtown

Hiawatha West

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Page 21: The Hiawatha Project – Challenges of Urban · Midtown Substation Energized October 2012 Construction Commences February-October 2012 Public Outreach & Design June 2014 Hiawatha

Underground Construction Vault Manhole Size: 11’ W x 25’ L x 10’ H Cable Diameter: ~5” Cable Weight: 13.3 lbs/ft Cable Installed after Duct Installation

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Existing Utility Relocation Gas – $400,000 Fiber/Telecom – $300,000 Watermain – $800,000 Sanitary & Storm – $100,000

Underground Construction (cont)

Page 23: The Hiawatha Project – Challenges of Urban · Midtown Substation Energized October 2012 Construction Commences February-October 2012 Public Outreach & Design June 2014 Hiawatha

How Did the Duct Cross the

Road? Major Arterial into Downtown

Minneapolis 40,000 vehicles/day MN DOT – “No Impacts to

Traveling Public” Jack & Bore Crossing vs

Open Cut Excavation

Highway 55 Crossing

10 day Closure

Superfund Site

Future Street Car Location

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Hiawatha Substation

HiawathaProjectHwy55.wmv

Video Clip – Highway 55

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Lessons Learned Early Project Risk Assessment Progressive Elaboration Education/Outreach Multi-Discipline Interaction Innovation & Constructability Engaged Stakeholders = Success

Page 25: The Hiawatha Project – Challenges of Urban · Midtown Substation Energized October 2012 Construction Commences February-October 2012 Public Outreach & Design June 2014 Hiawatha

Thank You!

Joe Samuel, PE, PMP, LEED [email protected]

Nathan Steward, [email protected]

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