Reader Service Number 1 Reader Service Number 2 CONTENTS CONTENTSJune 2007 Cover Story Toronto Underground 16 Toronto is the largest city in Canada and the provincial capital of Ontario. It is also home to variety of transit, sewer, water and power tunnels that keep this bustiling city up and running. By Boro Lukajic Features RETC Preview 20 A close-up look at 2007’s largest tunneling event in North America, including a Who’s Who of companies and products that will be on the exhibit hall floor. By Katie Fulton 16 Sewer Tunneling in Ontario 28 A joint venture of Aecon and McNally is completing the YDSS Interceptor Sewer in York Region. By Adrian Coombs, Steve Skelhorn and Derek Zoldy Niagara Tunnel Update 32 TBM checks in on the progress of the world’s largest hard-rock tunnel boring machine. By Desiree Willis The Owner’s Implied Warranty 36 What you need to know about this crucial and sometimes confusing aspect of construction law. By Peter M. Kutil and Karl Silverberg Columns Editor’s Message . .6 Tunneling North of the Border by James W. Rush View From the Hole . .6 32 The Truth Shall Set You Free by Bob Pond North American Tunnel Project Update . 35 A recap of recently completed, current and future tunnel projects. by Jack Burke My Turn . 35 Second Edition of the GBR Yellow Book Is Here by Randy Essex Departments TBM: Tunnel Business Magazine (ISSN 1553-2917) is published six times per year. Copyright 2007, Benjamin Media Inc., P.O. Box 190, Peninsula, OH 44264. USA All rights reserved. No part of this publication may be reproduced or Business Briefs . 8 transmitted by any means without written permission from the publisher. One year subscription rates: complimentary in the United States and Canada, and $69 Global Events . 12 in other foreign countries. Single copy rate: $10. Subscriptions and classified Calendar . 47 advertising should be addressed to the Peninsula office. Postmaster return form 1579 to TBM: Tunnel Business Magazine, P.O. Box 190, Peninsula, OH 44264.USA Business Cards . 49 4 Tunnel Business Magazine June 2007 Reader Service Number 3 EDITOREDITOR’S MESSAGE’S MESSAGE Bernard P. Krzys Publisher Tunneling North of the Border In this space last issue, I wrote about the tunnel- Richard J. Krzys Robert D. Krzys ing projects in the Midwest that often don’t get the Associate Publishers attention of their higher-profile brethren on the James W. Rush East and West coasts. But as we prepare to travel Editor to Toronto for the 2007 Rapid Excavation and Nick Zubko Tunneling Conference (RETC), I am reminded of Associate Editor the rich tunneling history in Canada, which also Sharon M. Bueno does not get the recognition of places like Boston, Katherine Fulton New York, Los Angeles, San Francisco or Seattle. Keith Gribbins Brad Kramer Toronto itself has the largest subway system in Jason Morgan Canada, with the completion of the Sheppard Contributing Staff Editors Subway Line being the most recent addition W.M. Conley (opened in November 2002). The subway now comprises 69 stations Creative Director and spans more than 42 miles. The Toronto Transit Commission is Edward A. Haney planning a northward extension that would extend the network even Senior Graphic Designer further into York Region. Sarah E. Hayes Close to Toronto is Niagara Falls, home to the 6.2-mile long Sir Chris Slogar Elizabeth C. Stull Adam Beck tunnel, which is currently under construction using the Graphic Designers world’s largest diameter hard rock TBM (47 ft). Sewer expansion Kelly Dadich tunnels are also in the works in Toronto, which with a population of Marketing Manager more than 5 million people in the greater metropolitan area is one Dan Sisko most populous cities in North America. Greg Thompson Another hotbed of activity is Vancouver, which is playing host to Regional Sales Representatives the 2010 Winter Olympics. Consequently, the city is in the midst of Alexis R. Tarbet building a transit link from the airport to downtown. Additionally, the Circulation Manager Greater Vancouver Water District is building the Seymour-Capilano Filtration Project as a system upgrade, which encompasses more Editorial Council than 4.5 miles of 12-ft diameter rock tunnels. As a side note, Chairman William H. Edgerton Vancouver was recently selected as the site for the 2010 International Gary Brierley, P.E. Jacobs Associates Tunnelling Association’s World Tunnel Congress. Brierley Associates, San Francisco Cities such as Edmonton and Montreal have also had long-stand- Denver Joe Gildner Randy Essex, P.E. Sound Transit ing transit and sewer programs. Mine development and hydropower Hatch Mott MacDonald Seattle projects also play an important role in the development of the Rockville, Md. Boro Lukajic Consulting Engineer underground industry in Canada. Roberto Gonzalez Mississauga, Ont. Izquierdo We will further examine the Canadian tunneling market in Moldequipo Internacional Dru Desai the August issue as we convene a panel of leading contractors, Tepotzotlan, Mexico DMJM+HARRIS Baltimore owners, engineers and equipment manufacturers for the annual Dr. Levent Ozdemir, P.E. Ted Budd TBM Roundtable. Colorado School of Mines Kenny Construction Golden, Colo. Wheeling, Ill. For more information on tunneling in Toronto and Canada, see the Bob Pond David Caiden article by Boro Lukajic on page 16. In this issue there are also Frontier-Kemper Arup project updates on the Sir Adam Beck Tunnel and the YDSS Evansville, Ind. New York, N.Y. Interceptor Sewer Project in Toronto. George Yoggy Rick Switalski, P.E. GCS LLC NEORSD Allentown, Pa. Cleveland, Ohio Regards, EDITORIAL & ADVERTISING OFFICES MEMBER 1770 Main St., P.O. Box 190 Peninsula, OH 44264 USA James W. Rush Ph: (330) 467-7588 • Fax: (330) 468-2289 Internet home page: http://www.tunnelingonline.com Editor e-mail: [email protected] 6 Tunnel Business Magazine June 2007 Reader Service Number 4 Business Briefs UTRC Meets in Seattle The Underground Technical Research Committee (UTRC) held its 2007 annual meeting March 23-25 in Seattle. About 100 people were in attendance to visit job- sites in the Seattle area, as well as hear presentations on projects and topics relevant to the tunneling and mining industries. UTRC kicked off with a reception at the Marriott Renaissance Hotel on Friday evening, March 23, followed by visits to Sound Transit’s Beacon Hill tunnel site, the Brightwater project site (East Contract) and the Mt. Baker Ridge Tunnel operations center on Saturday. Mt. Baker Ridge Tunnel: The 1,300-ft long Mt. Baker Ridge Tunnel was constructed by the Guy F. Atkinson Co. in the early 1980s using an adaptation of the stacked-drift tunneling method. Sized for vehicular traffic on two levels, the net interior diameter is 63 ft, requiring an exterior diameter of about 83 ft. The tunnel was excavated from predominately hard clay and constructed under high hor- izontal stress. It is the largest-diameter tunnel ever The segments for the Beacon Hill running tunnels are on site. attempted in soft ground. The system wide control facili- high groundwater pressures, which necessitate that slurry ty above the west portal enables monitoring of traffic, TBMs be designed to seal up to an 8-bar water pressure. temperatures and control of ventilation and fire suppres- Beacon Hill Underground Station and Tunnels: This sion systems. extension of Sound Transit’s Light Rail System is being Brightwater: The Brightwater conveyance system constructed by Obayashi Corp. Unique elements of this includes 13 miles of tunnels, a 130 mgd pump station, 1.25 project include an underground station constructed using miles of microtunnels, and a 1-mile outfall. The tunnels the Sequential Excavation Method. The 4,200-ft long extend from Woodinville to Puget Sound through varying twin-bore running tunnels with 18-ft, 10-in. internal diam- soils under 1 to 7 bars of hydrostatic pressure and at eter segmental linings are being excavated by a depths up to 459 ft. The tunnel portion of the project is Mitsubishi Earth Pressure Balance TBM. Three cross- divided into three sections. Construction of the eastern passages are included to meet NFPA 130 egress require- section of this soft ground project is being led by ments. The station will be mined from two slurry wall sup- Kenny/Shea/Traylor and includes bowtie slurry shafts. ported shafts; one 46 ft in diameter, the other 26 ft. Acting The middle section has been let to Vinci/Parsons as both entrance/exit and ventilation structures, the RCI/Frontier-Kemper and the tunnel will be exposed to shafts are 185 ft deep. The 380-ft platform tunnels plus connector tunnels, concourse adit, ventilation adits and cross-passage tunnels are being constructed using shot- crete initial linings, which take advantage of ground relax- ation to reduce loading. Sunday presentations included “Deep Shafts for Mine Development,” by Tom Goodell; “Arrowhead Tunnels Update,” by Brian Fulcher; “GBR ‘Gold Book’ Update,” by Randy Essex; “Portland CSO Update,” by Gary Irwin; and a keynote address by Doug MacDonald, Secretary of Transportation, Washington DOT. UTRC is jointly sponsored by the American Society of Civil Engineers (ASCE) and the American Institute of Mining, Metallurgical, and Petroleum Engineers (AIME) through the Society for Mining, Metallurgy, and Participants in the UTRC meeting were (from left) Tom Goodell (UTRC past Exploration, Inc. (SME). ASCE's Construction Institute chairman), Clary Alexander (past chairman), Dave Jurich (chairman), Doug also sponsors UTRC. Staff support is provided by ASCE. MacDonald (keynote presenter), Christopher Hickey (vice chairman), and Red Robinson (technical committee coordinator). For more information visit www.utrc.org. 8 Tunnel Business Magazine June 2007 Microtunneling Program a Success in Colorado The Colorado School of Mines hosted its annual con- Guest speaker at the Banquet Dinner on Feb.