Z--Rock Pillar Stabilization, Howard Hanson Dam, King County, Washington

Any questions regarding this solicitation should be address to: Scott Britt at contact@example.gov. The Seattle District Corps of Engineers has a competitive requirement for Rock Pillar Stabilization at Howard Hanson Dam. Howard Hanson Dam (HHD) is located on the Green River in western Washington and is a 230-foot-high rock fill dam. The existing outl et tunnel is 900 ft long, with a 19 ft semi-horseshoe shaped cross section, which is concrete lined. A Fish Passage Facility is being constructed adjacent to the existing outlet tower and outlet tunnel. To date, the excavation has progressed in elevation from 1150 to 1074 feet and the front section of the Fish Passage Facility has been constructed and is being used as cofferdam to keep the excavation separated from the reservoir. Project work includes drilling and grouting for foundation strengthening for the rock pillar that will be formed between the excavation and the outlet tunnel when excavation work progresses below elevation 1074 feet. Grouting work that requires plugging o f drain holes in the existing outlet tunnel and an observer within the tunnel during all grouting activities will be performed during a 60 day work period, approximately 15 July 2007 to 15 September 2007, when the tunnel is typically not used to pass river flows. All foundation grouting work must be completed during this 60 day window so the tunnel can be used for reservoir management and flood control after this date. Construct 22, 16-inch inclined drilled shafts approximately 70 feet long with structural steel W8X67 wide flange beams, centralizers, and other necessary appurtenances, and filled with concrete. The drilled shafts are to be located within the rock pillar that will be formed between the excavation and the outlet tunnel when excavation work progresses below elevation 1074 feet. Work also includes the decommissioning of 3 existing 12-inch diameter dewatering wells 250 to 350 feet deep at the Howard Hanson Dam Fish Passage Facility located near Palmer, Washington. The North American Industry Classification System (NAICS) Code is 237990 with a size standard of $31 Million. Project is open to both large and small business. Estimated magnitude of this construction project is between $500,000 and $1 Million. Large bu sinesses with proposals exceeding $1 million must submit a subcontracting plan with goals for small, HUBZone, small disadvantaged, small woman-owned, and small veteran-owned concerns. For the purposes of this procurement, a concern is considered a small b usiness if its annual average gross revenue, taken for the last 3 fiscal years, does not exceed $31 million. For information concerning NAICS and SBA size standards, go to http://www.sba.gov/services/contractingopportunities/sizestandardstopics/. Issue o f this solicitation will be via FedTeds: www.fedteds.gov, in electronic format only. No disks or hard copy will be available. Follow the registration procedures at this site and www.fedteds.gov to receive notification of solicitation/amendment posting. Persuant to Federal Acquisition Regulations (FAR), the solicitation will be available for download no earlier than 15 days following the posting of this synopis; therefore the release date of the solicitation is no earlier than 7 February 2007. Pursuant t o FAR, the response date (proposal due date) of the solicitation is no earlier than 30 days from the date of the solicitation release date; therefore, using 7 February 2007 as the approximate solicitation release date, the response date will be no earlier than 9 March 2007. Note that all dates are approximate and are subject to change. There is no technical information available until the issue of the solicitation via the Internet.