Frontier-Kemper Civil Projects

Waneta Dam Tunnels Project

1Contractor: Redpath/FKCI Waneta Tunnelers Partnership
Owner: Aecon/SNC Lavalin Joint Venture
Location: Trail, British Columbia

In December 2010, the Redpath/FKCI Waneta Tunnelers Partnership (RFK) reached an agreement with Aecon/SNC Lavalin Joint Venture to construct two parallel penstock tunnels for the Waneta Dam Expansion Project located at the confluence of the Pend D'Orille and Columbia Rivers near Trail, British Columbia, Canada. The overall expansion project consists of expanding the capacity of the existing 450 Megawatt (MW) Waneta Dam by installing a second powerhouse to generate up to 335 MW from water that is currently spilled over the dam. The expansion project is expected to take 4.5 years to complete. RFK's contract includes the construction of an access adit with a temporary portal to provide equipment and workers a way in and out of underground workings. The adit will be 6m by 6m and will be driven a length of 114m. The penstock tunnels will be excavated concurrently using drill and blast methods. The penstock tunnels will run uphill at 14% and 17% and will be approximately 10m in diameter. The first tunnel will be 206m in length and the second will be 201m in length. The tunnels will be lined with a 300mm thick cast in place concrete linear.

New Croton Equipment Project

1Contractor: Frontier-Kemper Constructors, Inc.
Owner: Frontier-Kemper/Schiavone/Picone, JV
Location: Bronx, New York

In November 2009, Frontier-Kemper Constructors, Inc. was awarded a contract by the Frontier-Kemper/Schiavone/Picone, JV for the design and fabrication of various shaft and aqueduct equipment. Design and fabrication work includes movable work bridges that will enable two transport vehicles to pass within the 12 ft. 3 in. I.D. brick lined aqueduct, two stage shaft work decks, ventilation control panels, shaft communication systems, special shaft work deck extensions for accessing elliptical portions of the shafts, precast shaft collars for suspending the shaft work decks, permanent steel roof truss systems for two existing structures, and various miscellaneous items necessary to support shaft and underground construction.

Eastside Access Queens Bored Tunnels

1Contractor: Granite/Traylor/Frontier-Kemper JV
Owner: New York City Metropolitan Transit Authority
Location: Queens, New York

In late September 2009, the Granite/Traylor/FKCI Joint Venture was awarded the contract for the construction of the Eastside Access Queens Bored Tunnels in Queens, New York. Eastside Access is a public works project being undertaken by the Metropolitan Transportation Authority (MTA) in New York City, designed to bring the Long Island Rail Road (LIRR) into a new Eastside station to be built below, and incorporated into, Grand Central Terminal in Manhattan. Scope of work includes the construction of four tunnels 19 ft. 6 in. in diameter with a combined total length of 10,500 ft. The tunnels will be constructed using two softground TBMs. Work also includes excavation of a large open-cut, installation of trackwork and related structures, construction of emergency exit structures, etc.

University Link Light Rail

1Contractor: Traylor Bros./Frontier-Kemper JV
Owner: Sound Transit
Location: Seattle, Washington

In May 2009, the Traylor Bros./Frontier-Kemper Joint Venture received Limited Notice to Proceed to begin preparations for the construction of transit tunnels under Contract U220 for the Sound Transit Authority in Seattle, WA. Contract U220 includes two 18'-10" finished diameter, segmentally lined, bored tunnels between the University of Washington Station (UWS) and the Capitol Hill Station (CHS). The tunnels will each be 11,400 ft. long and will constructed with pressurized face tunnel boring machines. There will be 16 cross passages excavated using sequential excavation methods between the running tunnels. This contract also includes all of the site civil work and installation of slurry diaphragm walls for both the station and crossover boxes for the UWS. Excavation and bracing of the Crossover Box is also included in the contract.

Water Tunnel No. 3 Equipment Installation Project

1Contractor: Picone/Schiavone/Frontier-Kemper/Dragados JV
Owner: New York City Department of Environmental Protection
Location: Manhattan, New York

On April 23, 2009 Picone/Schiavone/Frontier-Kemper/Dragados JV (the "JV") was awarded Contract 538D – Installation of Equipment and Appurtenances for the Completion of the Manhattan Leg of City Tunnel No. 3 by the New York City Department of Environmental Protection. This is the follow-on contract to the current Schiavone/J.F. Shea/Frontier-Kemper, J.V. water tunnel project - Contract 538C. Under Contract 538D the JV will install 48-inch riser valves and automatic safety controls within each of the ten (10) shafts constructed as part of Contract 538C. In addition, the JV will install 36-inch and 48-inch butterfly valves and stainless steel piping inside the existing subsurface distribution chamber, located at the top of each shaft. Extensive electronic controls will be placed within the chambers and at certain shaft locations. Additional piping will be installed to connect the shafts to existing street water mains. Upon completion of this project, the City will have the ability (after 40 years of construction) to use Water Tunnel No. 3 to provide water to Manhattan Island.

Seymour Capilano Twin Tunnels Project

1Contractor: Seymour-Cap Partnership
Owner: Metro Vancouver
Location: North Vancouver, British Columbia

A Joint Venture consisting of Frontier-Kemper, J. F. Shea, and Aecon submitted a proposal on January 23, 2009 for the completion of two water tunnels for the Greater Vancouver Water District. When completed, the twin 3.8m diameter tunnels will be used to transport raw water in one tunnel from the Capilano reservoir to the Seymour Treatment Plant and the other tunnel will return the treated water to the Capliano water distribution network. Approximately 6,344m total remains to be excavated in the tunnels by two Tunnel Boring Machines under this contract. A large portion of the work will be completed using existing plant and equipment from the Client and a previous contractor. In addition to the TBM tunnel excavation, work also includes tunnel support and control of groundwater; drill and blast excavation of underground chambers; excavation of twin 270m deep, 4m diameter raise bored shafts; installation and backfill grouting of steel lining in all shafts and portions of the tunnels; and interconnection pipes from the shafts to nearby water mains.

New Croton Aqueduct Rehabilitation Project

1Contractor: Frontier-Kemper/Schiavone/Picone, JV
Owner: New York City Department of Environmental Protection
Location: Bronx, New York

In October 2008, the Frontier-Kemper/Schiavone/Picone, JV was awarded a contract by the New York City Department of Environmental Protection for the rehabilitation of the New Croton Aqueduct. The scope of work calls for the rehabilitation of the New Croton Aqueduct from the Croton Lake Gate House just north of Westchester County to Shaft 33 in Manhattan; a length of approximately 30 miles. Work includes cleaning the tunnel lining, brick repairs, crack repairs, grouting, and epoxy coating. Additional work includes rehabilitation of 32 shafts and associated surface and site structures along the tunnel alignment. Work is anticipated to start in January 2009 and take approximately 27 months to complete.

Brightwater Tunnel Project

1Contractor: Vinci/Parsons/Frontier-Kemper JV
Owner: King County
Location: Seattle, Washington

A Joint Venture of Vinci Construction, Parsons, and Frontier-Kemper is 20 months into the construction of the 4 year, $210M Brightwater Central Conveyance Tunnel Project. Work includes two 14.33 ft. diameter segmentally lined tunnels – one 21,100 LF and the other 11,600 LF; both to be constructed using mix-shield slurry TBMs. Maximum operating pressures will reach 6 bar and hyperbaric interventions up to 5.5 bar, using tri-mix gases, for cutter head access and maintenance are anticipated. The North Kenmore Shaft is the main work shaft. It is 100 ft. deep and 54 ft. in diameter, and is constructed using the reinforced concrete slurry wall method. Both TBMs will be launched from this shaft. The westbound TBM will be retrieved at the Ballinger Way Shaft. This shaft is 200 ft. deep and 30 ft. in diameter and is constructed using the freezewall technique. The eastbound TBM will be retrieved at the North Creek Shaft which was constructed by another contractor. The project also includes 3,400 LF of 3-5 ft. diameter micro-tunneled and cut and cover sewers.