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#14 -Tolt Pipeline No. 2

special issues index

January 27, 2000


#14 -Tolt Pipeline No. 2
Phase II& III

Original contract amount
$18,163,224

Address
Eastern King County, majority of work in Snoqualmie Valley between West Snoqualmie Valley Road and 268th Avenue Northeast near Duvall. Another portion is at Bear Creek, east of Avondale Road Northeast and north of Novelty Hill Road.

Start of construction
July 1999

Expected completion date
October 2000

Owner
 City of Seattle Public Utilities

Description

The Eastern Segment of Phase II and III of the Tolt Pipeline No. 2 project involves furnishing and installing 1.7 miles of a steel pipeline varying in diameter from 60 to 75 inches.

The project includes constructing two tunnels, an air vacuum station, three blowoff stations, cathodic protection facilities, wetland restoration and mitigation, and a bored and jacked road crossing, and cement mortar lining about 2.5 miles of 75- to 81-inch-diameter steel welded pipeline previously installed under the Tolt Pipeline No. 2 Phase II and III Western Segment contract.

PROJECT PARTICIPANTS
Contractor
Tri-State Construction Inc.
320 106th Ave. N.E. (98004), P.O. Box 3686, Bellevue, WA 98009-3686
(425) 455-2570
Engineers
CH2M Hill
777 108th Ave. N.E., Bellevue, WA 98009-2050
(425) 453-5000
Subcontractors, Subconsultants & Suppliers
Condon Johnson & Assoc.
Cadman Inc.
F&H Fence Co.
Northwest Boring Co.
Great White Construction
P&G Landscaping
Northwest Pipe Co.
Columbia Pumping and Construction
Magnolia Contractors Inc.
DDJ Construction
Premier Cathodic Caliber Inspection
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