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United States, Georgia - us/106

Atlanta Wastewater

South River wastewater tunnel to eliminate sanitary overflows awarded late-2008 to Peter Kiewit, value USD111,684,927. Comprises 2.86 km-long, 5.1 m-diameter TBM drive with 4.45 m ID cast-in-place concrete liner together with 337 m-long drill/blast connector to be lined with Hobas pipe. Two construction shafts of 7.64 m-diameter and 10.18 m-diameter, plus 19.1 m-diameter pumping station shaft required. Clearing and grubbing underway for site set-up with grading and sound walls. Two-year project schedule. Visit www.kiewit.com/districts/underground/projects.aspx. 08/09.

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United States, Wisconsin - us/105

Flood Control

Joint venture Shea/Kenny has been awarded the EUR38 million contract to construct the 915 m-long x 5.2 m-diameter Underwood Creek diversion tunnel. The tunnel will hold 1,400 million litres of floodwater for controlled discharge into the Menomonee River. More from Dutch Vleigenthart, VP, at J F Shea, tel +1 909 594-9500. Just EUR216,000 separated Shea/Kenny from second bidder. Contact Milwaukee Metropolitan Sewerage District, tel +1 414 272-5100 or visit www.mmsd.com. 52/08.

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United States, Spokane - us/104

Railway

Unusual 423 m-long rail tunnel to carry Burlington Northern trains beneath the new North Spokane Corridor freeway between US 395 and I-90 awarded earlier this year to Scarsella Brothers of Seattle at USD17.29 million is underway for completion mid-2009. Tunnel comprises 444 precast concrete arch sections to provide 17.2 m width, enough to accommodate a future second set of tracks. More from Al Gilson, tel +1 509 324 6015, e-mail gilsona@wsdot.wa.gov. 48/08.

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United States, California - us/103

Water

Invitation to tender, deadline 1st October, 2008 for construction of the new Crystal Springs bypass (Polhemus) tunnel in San Mateo County. The contract consists of the excavation and construction of approximately 1,380 m length of tunnel and associated shafts, initial lining, and monitoring instrumentation/system and other associated works. The project is expected to employ a tunnel boring machine. Contact San Francisco Public Utilities Commission (SFPUC), Contract services, tel. +1 4155514603, e-mail rfp@sfwater.org. Visit http://sfwater.org/custom/bid/detailbyplan.cfm/bidid/2423/bidtype/1/MC_ID/15/MSC_ID/149/MTO_ID/331 39/08. The currently prequalified contractors are listed at http://sfwater.org/msc_main.cfm/MC_ID/15/MSC_ID/150 clicking on SFPUC Pre-Qualified Contractors (the list of approved contractors can be found at the bottom of the page). 39/08.The SFPUC selected Jacobs Associates on 27th May to perform construction management services for the project. The 1,380 m new Crystal Springs bypass tunnel (NCSBT) will replace the existing Crystal Springs bypass pipeline and will provide residents in the southern San Francisco area with a more reliable drinking water pipeline. This tunnel project is part of the SFPUC's USD4.3 billion capital improvement programme to repair and seismically upgrade their aging pipelines, tunnels, reservoirs and dams that provide drinking water to more than 2.4 million customers in the San Francisco Bay area. The bedrock is within the Franciscan complex, classified as melange and sandstones. Under San Mateo Creek, the tunnel may require pre-grouting. The primary liner will be precast concrete segmental lining and the secondary liner a 2.44 m ID welded steel pipe. The estimated cost of the project is USD57 million. Construction is set to start in October 2008. Visit www.jacobssf.com 39/08.

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United States, California - us/102

Water

Jacobs Engineering Group received a contract from the San Francisco Public Utilities Commission (SFPUC) to provide construction management services for the Bay tunnel project in California. The project will construct 7,991 metres of 2.75 m finished diameter soft ground tunnel below the San Francisco Bay between the East Palo Alto area on the west side of the Bay and the City of Newark on the east side of it, two vertical shafts in areas adjacent to the Bay, and a watertight final lining of welded steel pipe. The project is expected to utilize a soft ground TBM and a bolted, gasketed precast concrete segmental lining system. The total installed cost of the construction project is valued at approximately USD270 million with a construction management contract value of USD18 million. The tunnel is one of the most critical elements of the water system improvement programme to ensure the delivery of reliable, high quality, and affordable water to 2.4 million customers in the four Bay area counties of Alameda, Santa Clara, San Mateo, and San Francisco. Visit www.jacobs.com and www.sfwater.org 39/08.Prequalification is still open for construction of the Bay tunnel. A contractor must be prequalified prior to the final bid opening date (this could run down to the day before or even the morning before the opening, as long as they are approved prior to the bids being due). It can take anywhere from 1-3 months for the SFPUC to process a statement of qualifications. Interested candidates may contact the main number of the SFPUC's Contracts Administration Bureau at tel. +1 4155510736. Questions on prequalification may be sent to prequal@sfwater.org or to contractorshelp@sfwater.org. The currently prequalified contractors are listed at http://sfwater.org/msc_main.cfm/MC_ID/15/MSC_ID/150 clicking on SFPUC Pre-Qualified Contractors (the list of approved contractors can be found at the bottom of the page). 39/08.

Invitation to tender from pre-qualified contractors, deadline 29.10.2009, for construction of 8 km-long x 4.45 m-diameter rock TBM tunnel under San Francisco bay from Menlo Park to Newark together with two shafts. Contract estimated value EUR235-260 million for completion in 61 months. Tunnel will house 2.86 m-diameter steel water main. Contact Andrew Houston at SFPUC for further information, tel +1 415 551-4335 or -4603, e-mail rfp@sfwater.org. Pre-bid conference scheduled for 31.08.2009 at 10.00 h at San Francisco International Airport, Louis Turpen Aviation Museum. Visit www.sfwater.org, Construction Bid Opportunities, bid number WD-2531 for information on obtaining specs and docs. For list of SFPUC pre-qualified contractors, visit http://sfwater.org/msc_main.cfm/MC_ID/15/MSC_ID/150. 32/09.

Joint venture of Michels/Jay Dee/Coluccio low bid for Bay Tunnel at EUR142 million. Bid range EUR142 million to EUR162 million against engineer estimate of EUR165 million. For full project background visit tunnelbuilder archive us/102 For client details visit www.sfwater.org. 49/09.

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United States, Nebraska - us/101

Sewage

On 13th May, 2008, the Omaha city council approved a USD510,000 contract with Parsons Brinckerhoff to carry out geotechnical and geophysical exploration and testing of soil and rock samples for the planned deep tunnel to be constructed under Omaha for storage and conveyance of combined storm water and sanitary sewage. The tunnel will be about 53.4 m deep and will take in overflow waste water and funnel it to a new treatment facility south of downtown. PB will use boring machines to dig six test holes along the 9.6 km-long, north-to-south route between the Gallup campus and the Veterans Memorial bridge. The machines will dig each hole to a depth of 90 metres and then bring up soil and rock samples to see what the nature of the limestone is deep underground. Drilling is expected to begin in early June and should be finished in a couple of months. The tunnel is expected to cost between USD300 million and USD400 million, making it the single most expensive component of the sewer overhaul. Visit www.pbworld.com and www.ci.omaha.ne.us/departments/city_council/agendas/ID%2008_05_13/Public%20Works/668.pdf 24/08.

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United States, New Jersey - us/100

Sanitation

Tunnel contractors are advised that the Middlesex County Utilities Authority is soliciting contractors with extensive tunnelling experience to submit Requests for Qualifications, until 31st October, 2006 for the construction of a 3,900-linear foot (1,190 m) tunnel beneath and at the mouth of the Raritan River in Central New Jersey. Tunnel construction will consist of the installation of a 12-foot 10-inch (3.9 m) ID bolted, gasketed, fully grouted segmental concrete tunnel in soft soil using a pressurized face TBM. The tunnel construction will include the installation of two new 60-inch (152 cm) diameter parallel force mains within the tunnel. The design engineer is Hatch Mott MacDonald. Interested parties are urged to visit the Authority's website for further information, www.mcua.com/request_for_qualifications.htm, or contact Donato J. Tanzi, P.E., Division Manager/Chief Engineer, Middlesex County Utilities Authority, PO Box 159, 2571 Main Street Extension, Sayreville, NJ 08872, tel. +1 7327213800, fax +1 7327210206. 38/06.

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United States, Nevada - us/99

Las Vegas

Under an engineering services contract awarded by the Clean Water Coalition (CWC), Black & Veatch is serving as the lead design engineer for the Systems Conveyance and Operations Program (SCOP) pipeline and tunnel project that will convey effluent from CWC member agencies' wastewater treatment plants to a new discharge location in Lake Mead. Black & Veatch has responsibility for the 30% design of the entire SCOP system including the 12 km tunnel through the River Mountain. Black & Veatch is also responsible for preparing the geotechnical programme required for detailed design, conducting the subsurface investigation programme, determining the right-of-way requirements and performing the project survey. The Black & Veatch team will review the final designs of all the project elements and provide design support during construction.The SCOP project is an important aspect of southern Nevada's water resources management strategy. The CWC and the Southern Nevada Water Authority are coordinating the placement of a new potable water intake and the effluent discharge location to provide the best water quality while ensuring capacity for the future. Visit www.bv.com and www.cleanwatercoalition.com 37/06.

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United States, California - us/98

Los Angeles

Parsons and Jacobs Associates has been selected by the Sanitation Districts of Los Angeles County to prepare a feasibility study and perform preliminary engineering for a new tunnel and ocean outfall, where chemically treated wastewater would be discharged into the ocean. The tunnel would start at a water pollution control plant in Carson with an onshore shaft and tunnel and run about 9.65 km until it goes offshore. Offshore it will involve either a tunnel, combination conventional outfall and tunnel or a conventional outfall. The new tunnel and outfall, which would be one of the world's largest and would provide improved reliability and operational capability, would be about 6 m in diameter, and it could be 25.7 to 27.4 km long by the time it is all done. The existing tunnels go about 3.2 km offshore to a depth of 60 m. Those tunnels, 2.4 m and 3.6 m in diameter respectively, are more than 50 years old, and during severe storms they run at full capacity.The districts are evaluating the feasibility of a new tunnel and ocean outfall in the context of a comprehensive master facilities plan to cover its joint outfall system, which serves a large portion of metropolitan Los Angeles County. During the feasibility phase, a team of Parsons and Districts engineers will evaluate several onshore and offshore alignments and potential diffuser locations. Following selection of the preferred alternative, Parsons will perform the preliminary design. Visit www.parsons.com, www.jacobssf.com and www.lacsd.org 36/06.

The Sanitation Districts of Los Angeles County (Sanitation Districts) awarded a EUR533,48 million (USD630 million) construction contract for the Clearwater Project to Dragados USA Inc, belonging to ACS Group. The project will protect local waterways by addressing aging infrastructure and involves building a new 11.27 km (7‐mile) long, 5.49 m (18‐foot) diameter tunnel to convey treated water from the Joint Water Pollution Control Plant in Carson to existing ocean outfalls at Royal Palms Beach in San Pedro. Construction will begin this year and is scheduled to end in 2026. Visit https://www.grupoacs.com/. 43/18.

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United States, Indiana - us/97

Sewer

A Lovat TBM commenced work on 15th November, 2005 in Indianapolis to help redirect raw sewage overflows away from four schools, playgrounds and neighbourhoods in the city's eastside. The USD19.2 million Pogues Run sewage overflow reduction. Super Excavators, Walsh Construction and Insituform are the constractors, with Clark Dietz and Brierly Associates as designers and Christopher B. Burke Engineering as inspection firm. The USD19.2 million project is to be completed by August 2006.The machine is a 4.2 m-diameter mixed-face EPB shield along with associated ancillary equipment. It is equipped with 150 kW water-cooled Variable Frequency Drive electric motors which will provide the cutting head with 110 to 270 tonne*metre of torque from 4.8 rpm to 1.9 rpm with constant horsepower. The forward shell/cuttinghead structure will have two degrees of active articulation driven by 12 180-tonne cylinders. The USD12.5 TBM will have a maximum propulsion thrust of 2,200 tonnes and a stroke of 2.3 metres. Operating up to 4 bar, the TBM will feature a two stage 60 cm-diameter screw conveyor that can be retracted from the cutting head chamber. The 31-metre screw conveyor is composed of two independently-driven sections. Each screw can be operated at different speeds to assist in control of EPB pressures. A two-component grout system will be used through the use of efficient, reliable and even-distribution peristaltic pumps. The system is interlocked with the machine's advance, thereby controlling the volume/pressure of the injection relative to the surrounding soil. Lovat has been using this design since September 2002 in North America and first developed and used outside North America in September 1997. This EPB TBM will bore through man-made fill composed of clays and mixed sands, as well as cohesive glacial till deposits, interbedded with sand and gravel outwash. The TBM will erect and install a prefabricated 6-piece reinforced concrete segment lining. Visit www.lovat.com and www.indygov.org 52/05-01/06.

Prior information of bid advertisements due 16.05.2011 for EUR208 million first phase of Indianapolis cleanup project comprising 5.73 m-diameter, 80 m-deep, 11.26 km-long deep rock tunnel connector between Southport and Belmont AWPs, project CS-38-010C. Construction start scheduled for 12.09.2011. Contact John Morgan at Indianapolis Dept of Public Works, tel 01 317 327-8053, fax -4954. Four more tunnels are planned along White River, Fall Creek, Pleasant Run and Pogues Run waterways by 2025. Visit www.indy.gov/eGov/City/DPW/Business/Bids/Pages/home.aspx. 19/11.

Award to Aecom, Los Angeles, CA of EUR18.5 million contract to manage construction of first phase of Indianapolis cleanup project comprising 5.73 m-diameter, 80 m-deep, 11.26 km-long deep rock tunnel connector between Southport and Belmont AWPs, project CS-38-010C. Visit www.aecom.com. Construction completion scheduled for 2017. The successful bidder for construction has not yet been announced, but is below EUR203 million estimate. More from John Morgan at Indianapolis Dept of Public Works, tel 01 317 327-8053, fax -4954. Visit www.indy.gov/eGov/City/DPW/Business/Bids/Pages/home.aspx. 39/11

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