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Top 20 Public Construction Projects of 1998


Top 20 Public Construction Projects of 1998
January 21, 1999

Alternative Bid Project 9 - Tolt Treatment Facilities

Journal staff

Tolt Treatment Facility
The Tolt Treatment Facility was funded and built using a unique design-build-operate contract between the City of Seattle and CDM Philip.
Project description: The City of Seattle has taken advantage of an innovative public-private partnership to develop its first water filtration plant. As an alternative to the conventional public works procurement process, city officials assembled an integrated team of designers, constructors and operators to provide the most reliable and cost effective proposal for developing the project.

While the city still owns the facility, a contract for the design, construction and operation (a 25-year agreement) of the Tolt Treatment Facility was entered into between Seattle Public Utilities and CDM Philip in May of 1997.

CDM Philip is a company formed by Philip Utilities Management Corp., headquartered in Ontario, Canada, and Camp Dresser & McKee (CDM), headquartered in Cambridge, Mass. In its capacity as prime contractor, CDM Philip has entered into a Design-Build agreement with Dillingham Construction for the engineering, procurement, construction and start up of the Tolt facilities. CDM is serving as the design engineer for the project. Once the completed facility has passed the acceptance test and is deemed suitable for delivery of treated water CDM Philip will operate the facilities.

The contract is valued at $101 million, and will save $70 million over the original estimate of $171 million to develop the same facility utilizing a conventional design-bid-build procurement. The facility, expected to be operational in late 2000, will be a 120 million gallon-per-day filtration and ozonation plant for treatment of Seattle's Tolt River source of supply, which provides about a third of the water for Seattle residents and 26 regional wholesale customers.

The new facility will increase system reliability and flexibility by permitting continuous operation of Seattle's Tolt River source through periods of high turbidity, will allow long range conformity with anticipated regulations, and will increase system yield. Filtration will improve water quality to a level beyond what is required by existing governmental standards as well as satisfying increases in standards proposed for the future. It will also allow the reservoir to be operated in all weather conditions (currently, certain conditions render the river too muddy to be used at times) and will produce additional water supply from the Tolt reservoir.

Address: 12910 Kelly Rd., Stillwater, WA
Original contract amount: $101 million, estimated 1998 cost
Start of construction: May 1998
Expected completion date: Dec. 2000
Contractor Team: CDM Philip Joint Venture company: Camp Dresser & McKee, Philip Utilities Management Corp., and Dillingham Construction.
Owner: City of Seattle Public Utilities

Project Participants:

  • Adolfson Associates Inc.
  • Arai/Jackson
  • Ashford Electric & Construction Co.
  • Associated Environmental Group
  • BOAS Inc.
  • Boateng and Associates
  • Brundage-Bone Concrete Pumping
  • BTW of NW Inc.
  • Camp Dresser & McKee Inc.
  • Carla Keel Group
  • CivilTech Corporation
  • Cooke Scientific Services
  • Cooper Logging & Tree Service
  • Damon S. Williams Associates
  • DDI Construction Co.
  • Dea Mor Associates Inc.
  • Dillingham Construction N.A. Inc.
  • Engineering Graphic Services
  • EnviroMech
  • Hawkins, Delafield and Wood
  • International Forest Consultants
  • Jerome B. Gilbert Inc.
  • Johnson Western Gunite
  • KJM & Associates
  • Linder Construction Inc.
  • Madden Construction Inc.
  • Magnolia Contractors Inc.
  • Mahlum Architects
  • Malcolm Pirnie
  • Market Street Computer Systems
  • Mayes Testing Engineers Inc.
  • McKinstry/Roerge
  • Mishra & Associates, Inc.
  • Moore Engineering Consultants, Inc.
  • Murase Associates
  • Norton Corrosion Limited Inc.
  • NW Tower Crane Service Inc.
  • Philip Services Inc.
  • Philip Utilities Management Corporation (PUMC)
  • Premium Construction
  • Professional Copy N' Print
  • Publicis Dialog
  • R.C.T. Engineering, Inc.
  • R.W. Beck Engineers
  • Rainier Steel Inc.
  • Randall Schalk
  • Sanders & Associates Inc.
  • Seattle Northwest Securities
  • Sequoyah Corp.
  • Summit Law
  • Symonds Consulting Engineers
  • Tacoma Pump & Drilling Co. Inc.
  • Washington Trout
  • White Shield, Inc.
  • Yarmuth Wilson
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