EFA Chesapeake, Washington Navy Yard, Building 212, 901 M Street, S.E., Washington, DC 20374-5018

Y -- DEMOLITION OF TOWERS, NRTF, ANNAPOLIS, MD SOL N62477097-R-0047 DUE 012799 POC Ms. Brenda Geist, (202) 685-8210, Facsimile (202) 433-6900 THIS MODIFICATION REPLACES ALL PREVIOUS COMMERCE BUSINESS DAILY NOTICES FOR THIS SOLICITATION. NO PLANS AND SPECS WILL BE ISSUED FOR THE PHASE I EFFORT. PHASE I WILL PRE QUALIFY VENDORS. THOSE DETERMINED MOST QUALIFIED AFTER REVIEW OF PHASE I SUBMISSIONS WILL BE INVITED TO SUBMIT TECHNICAL AND PRICE PROPOSALS UNDER PHASE II BASED ON PLANS AND SPECS. This will be a design/build effort. The work includes demolition and removal of eighteen antenna towers, a downlead structure (tower), antenna arrays and guys, six concrete anchor blocks and steel piles from the Chesapeake Bay, the excavation and removal of a causeway (including the tower foundation thereon) from the Chesapeake Bay, restoration of all sites to their existing conditions and surface contours, construction of 16 osprey nest platforms, and incidental related work. The contractor shall remove, salvage, and turnover the isolation transformer for the 1200 foot tower to the Government. The contractor shall also protect the downlead feed through bushing on the roof of the Helix House (Bldg 5) from damage so that it is salvageable by the Government. The towers and antenna arrays to be demolished include: 1) The VLF Antenna Array, which consists of a four-panel 110 acre antenna array supported by One 1200 foot tower with four levels of three guys each, Six 600 foot towers with two levels of three guys, and Three 600 foot free-standing Eiffel-style towers and a downlead terminal structure (66 foot tower); 2) The Marconi Triadic Antenna Array, which consists of a three segment antenna array supported by three 300 foot free-standing towers; 3) Tower 64, which is a 300 foot free-standing antenna tower supporting microwave antennas; 4) Tower 126, which is an 800 foot tower supported by one level of eight guys at the 500 foot level and located within the existing golf course; 5) Three 80 foot triangular towers with rigid conical antenna frames supported by rope guys. The work shall be located at the Naval Radio transmitter Facility, Annapolis, MD. The naval station, primary school, and golf course will remain in operation during the entire contract period. The contractor shall conduct his operations so as to cause the least possible interference with normal operations of the activity. Environmentally sensitive areas and possible cultural resources, including prehistoric and historic sites, must also be protected. The project work will also be affected by the presence of nesting osprey, the use of the Naval Academy's small arms training facility located across Carr Creek from the VLF Antenna Array, and operation of the existing golf course, with respect to the months of the year and/or the days of the week during which work may occur. The contractor will develop work and safety plans, construction drawings, and specifications and perform the work described above. The contractor may use explosives and/or conventional dismantling techniques to demolish the towers, as safely as possible, with minimal environmental disturbance to the site (including the Chesapeake Bay),and with minimal physical disturbance to the golf course and/or disruption of golf course operations. The contractor shall be responsible for performing all necessary verification and/or mapping of site conditions, topographic contours, utilities, archaeological/historic and environmental features, etc., for the purpose of demolition, restoration, permitting, and/or approvals. This is a two-phase procurement using a best value analysis for source selection. In Phase I, Offerors will be pre-qualified on the basis of the following factors. Only the best-qualified offerors will be invited to submit Technical and Price proposals under Phase II. Factors for evaluation of Phase I are: Factor 1 -- Proposed Project Team Structure and Staffing (provide a project specific organization chart including the names of those firms and key personnel responsible for Construction Management, Design, Demolition of Antenna Towers, Restoration of sites and sensitive areas and Quality Assurance and Quality Control). Factor 2—Relevant Team Experience (provide a minimum of three projects for each key team member identified in Factor 1 [including Prime Contractor/Subcontractor experience on large demolition projects, demolition of antenna towers, design of large scale demolition projects, MDE Sediment & Erosion Control and Army Corps of Engineer permitting experience and QA and QC]). Project Teams possessing experience in demolishing taller towers with solid (non-tubular) structural members and more experience in demolishing large antenna arrays supported by tall towers will receive preference. Factor 3 -- Past performance (For each project listed under Factor 2, provide a point of contact knowledgeable of your performance on the identified project and a phone number). Also provide a general list of recent clients that may be contacted for further reference. The Government will evaluate the reputation and quality of the proposed project team's past performance. Factor 4 -- Provide the EMR's (Experience Modifier Rating)of the Prime Contractor and the team member directly responsible for the tower demolition work, for each of the past three years. Factor 5 -- Provide a statement of the prime contractor's current total bonding capacity and single project bonding capacity. Factor 6 -- Describe how the proposed team will interact to ensure that this project is executed safely and expeditiously and to minimize impacts to the existing environmentally sensitive areas, cultural resources, and existing buildings, facilities, and operations. All proposals are to be received no later than 2:00 P.M., 27 January 1999. Submit six bound copies (not exceeding 50 pages each) to the Engineering Field Activity Chesapeake, 901 M Street, SE, Bldg. 212, Washington Navy Yard, Washington DC 20374, Attn: Brenda Geist. Posted 01/15/99 (W-SN288526). (0015)

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