DOC; Mountain Administrative Support Center; Acquisition Management Division; 325 Broadway MC3; Boulder, CO

66 -- RF MICROWAVE ABSORBERS SOL 52RANB70C030 POC Procurement Technicians, (303) 497-3221 or Fax (303) 497-3163 E-MAIL: NOAA; MASC Acquisition Management, Joyce.J.Mills@noaa.gov. This a combined synopsis/solicitation for commercial items prepared in accordance with the format in FAR Subpart 12.6, as supplemented with additional information included in this notice. This announcement constitutes the only solicitation; proposals are hereby requested and a written solicitation will not be issued. The solicitation number is 52RANB70C030 and is issued as a Request for Proposal (RFP). The National Institute of Standards and Technology (NIST), Electromagnetic Fields Division is refurbishing the electromagnetic anechoic chamber and adjoining area located in room 4604/4608 of building 1. NIST will remove the old urethane absorber, install a fire sprinkler system, and repair the shielded room surfaces prior to this installation. The Contractor shall provide all labor and materials required to design and install all new fire-retardant rf absorbing material in this chamber. The Contractor shall be responsible to: (1) Design and/or select the proper fire-retardant rf absorbing material to optimize chamber performance from 200 MHz to 50 GHz. This design and material selection shall provide (as a minimum) the reflectivity performance of the absorbing material currently in the chamber as listed below. Also, the contractor shall provide estimated chamber performance data (derived through calculations or measurements of other similar installations) for the proposed design prior to installation. (2) Provide all materials including Fire-retardant rf absorber, adhesives, fabric liners, walkways, ventilation materials, etc. necessary for a complete installation. (3) Install all materials in room 4604/4608. This includes shaping the absorbing material in corners, around the rails on the floor with fabric liners, around the pop-down fire sprinklers, and any other fitting necessary to completely cover all surfaces with the proper absorbing material. (4) Guarantee minimum performance claimed in (1) has been achieved. The installation of the new absorbing material will follow the installation of the fire suppression system (sprinklers and detectors). The sequence of removal of the old absorbing material, repair of the room shielding, followed by the installation of the fire equipment and new fire-retardant absorbing material is planned to begin in May, 1997. Note: The installation of the fire equipment may require a 45 degree shielded panel in one of the rear corners of the room to conceal sprinkler heads and piping. Special miter cuts on the new absorbing material may be required to fit this corner. Chamber Information: The NIST fully anechoic chamber (room 4604) is used primarily for the calibration and characterization of small antennas and electromagnetic field probes at frequencies of 200 MHz to 50 GHz. The test volume for these measurements is parallel to the length of the chamber following the boresight line of the transmitting antenna (horn or open ended waveguide) and at most +0.5 meter in the vertical and horizontal transverse directions. The transmitting antenna is mounted in the doorway of the chamberand its boresight line is near the centerline of the room. Measurements are done along the entire length of the room except for about 1 meter at each end. Chamber performance is measured by scanning the electric field along the boresight line and analyzing the resulting variation in the field (free-space standing wave ratio). Measurements in the chamber have yielded the following estimates ( + 2.5 dB) for the reflectivity for the existing absorbing material. The new design shall have reflectivity levels (signal return loss) for the following frequencies of at least these values: (1) 200 MHz at -21 dB; (2) 250 MHz at -25 dB; (3) 300 MHz at -30 dB; (4) 500 MHz at -35 dB; (5) 750 MHz at -35 dB; (6) 1000 MHz at -42 dB; and greater than 1000 MHz at less than -42 dB. There are precision rails spaced about 2 meters apart on the floor and running the length of the chamber. A cart with antenna positioner equipment rides on the rails. The absorbing material must be shaped around these rails and the lower legs of the cart to allow this movement. Currently, continuous lengths of nylon pack cloth are glued to the shaped material to provide a smooth surface for the cart legs to slide by. There is additional smaller absorbing material fastened to the nylon fabric such that the rails have some coverage except immediately under the cart. There is a special skirt around the bottom of the cart legs which lifts the small absorber and fabric up and out of the way as the cart passes by. The new design shall have a similar feature to keep the rails covered except directly under the cart. Also, there is a 6 feet tall by 8 feet wide flat panel mounted to the front (towards transmit antenna) of the cart. There is 24 inches of clearance from the bottom of this panel to the floor. Absorbing material is fastened to this panel to hide the metal surfaces of the cart. There is a walkway along the front (doorway end) of the chamber and along the length of the room to one side of the cart/rails. There are four 2 feet x 2 feet air vents (2 inletson the left side wall and 2 exhaust on the right side or exterior wall) which require special treatment. Chamber and adjoining room dimensions (approximate): Chamber: L = 28 ft., W = 22 ft., H = 16 ft. Absorber on all surfaces; floor, walls, and ceiling, may be up to 36 inches depth at selected locations, except as noted for the cart and adjoining room. Also include 24 inches material for 2 (2 ft. by 8 ft.) removable panels used to cover the doorway. Cart Panel: W = 8 ft., H = 6 ft. (Note: absorber limited to 24 inches total depth on the floor under the moving cart and on this cart panel). Adjoining Room: (two wall surfaces only) W = 23.5 ft., H = 9 ft. & W = 10 ft., H = 9 ft. (remove tips for this space, 24 inches maximum length). This solicitation and incorporated provisions and clauses are those in effect through Federal Acquisition Circular 90-45. This acquisition is unrestricted. Standard Industrial Classification code is 3999. Small business size standard is 500 employees. Delivery shall be 90 calendar days after Contractor's receipt of a notice of award. Earlier delivery is encouraged. Delivery shall be F.O.B. Destination to NIST, 325 Broadway, Boulder, Colorado 80303-3328. Firms are encouraged to visit the site to familiarize itself with the area where the work is to be done before submitting its proposal. To schedule a site visit, contact Marilyn Scherer on 303-497-3657. Forms and clauses stipulated herein may be downloaded via the Internet's World Wide Web at the following address: http://www.masc.noaa.gov/masc/masc_ prc.html#contract. Interested parties are responsible for accessing and downloading documents from that (or any other) site. Firms that have no access to the Internet may call (303) 497-3221 and ask for copies to be mailed or faxed to them. The following provisions and clauses apply to this solicitation: FAR 52.212-1, (provision) "Instructions to Offerors -- Commercial Items"; FAR 52.212-2, (provision) "Evaluation -- Commercial Items"; FAR 52.213-3, (provision) "Offeror Representations and Certifications -- Commercial Items" (NOTE: Offeror's shall include with their offers a completed copy of the provision at FAR 52.213-3.); FAR 52.212-4, (clause) "Contract Terms and Conditions -- Commercial Items"; FAR 52.212-5, (clause) "Contract Terms and Conditions Required to Implement Statutes or Executive Orders, Commercial Items" including the following additional FAR clauses in paragraph (b): 52.203-6, 52.203-10, 52.219-8, 52.222-26, 52.222-35, 52.222-36, 52.222-37, 52.225-3, 52.225- 9, 52.225-19 and 52.225-21. The evaluation criteria shall be: (a) Design engineering -- 50 points; (b) Installation -- 30 points: (c) Organization, personnel and facilities -- 10 points; and (d) General quality and responsiveness of proposal -- 10 points. Award of the contract will be made, within the limit of available funding, to that offeror whose proposal contains the combination of those factors offering the best overall value to the Government. This will be determined by comparingthe differences in the values of technical and management features with differences in cost to the Government. In making this comparison the Government is more concerned with striking the most advantageous balance between technical and management features and cost to the Government. Offers are due at 3:00 p.m. on May 30 1997 and shall be mailed to BID DEPOSITORY, DOC, MASC, MC3; Acquisition Management Division, Room 5532; 325 Broadway; Boulder, CO 80303-3328. (0119)

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