National Park Service, Denver Service Center, P.O. Box 25287 DSC-CA, Denver, CO 80225-0287

Z -- CONTAINMENT CONSTRUCTION AND PILE INSTALLATION, FORT SUMTER NATIONAL MONUMENT SOL 1443RP501097902 DUE 060597 POC Construction Contracts, 303/987-6744 E-MAIL: National Park Service, Denver Service Center, contracts_dsc@nps.gov. The National Park Service, is soliciting proposals (in the form of a negotiated firm-fixed price contract requiring submission of both a technical and cost proposal) from construction firms having the capability to construct the first phase of a pier. -- The work of this project includes installation of a waterside containment system, ground water containment system, and a landside containment system to minimize potential discharges of contaminants during debris removal and construction. -- The waterside containment system will be designed to minimize off-site migration of sediments and soil. It will include at a minimum: timber lagging wall, sand blanket, and silt curtain. -- The ground-water containment system will prevent lateral discharges of ground water to surface water and to prevent downward migration of site constituents to the sand aquifer. The system will include at a minimum: limited preaugering depths for pile installation and minimized time the bore hole is open to limit downwardmigration to the sand aquifer, and an impermeable liner attached to the timber lagging wall. -- The landside containment system is designed to control off-site migration of soil, sediment, and storm water. It will include at a minimum the following: silt fencing, hay bales, matting, mulching, and seeding to minimize erosion of soil and surface runoff, temporary berms, diversions, and channels, collection basin, vehicle wash pad to remove soils before vehicles leave the site. -- Removal of debris from the site prior to the start of construction. Debris shall include all materials encountered above and below the site surface which will impede the installation of the pier and the bulkhead. -- Installation of concrete piles on the waterside and landside. -- Estimated price range, $2,500,000 to $5,000,000. -- Time for completion, 450 calendar days. -- Bid opening date is approximate; actual date will be established at the time bidding documents are available. -- All responsible sources may submit a bid which will be considered. (0091)

Loren Data Corp. http://www.ld.com (SYN# 0139 19970404\Z-0006.SOL)