Demolition Buildings 412 and 413 REF: WO 3297

National Institute of Standards and TechnologyApril 13, 2015

NIST Campus, Gaithersburg, MD

Statement of Work

March 27, 2015

Demolition of Buildings (Trailers) 412 and 413 and remaining infrastructure

Background: Trailers (Buildings) 412 and 413 at NIST Gaithersburg, MD have been determined to be excess by Governmental authorities. NIST has been directed to dispose of the trailers by those authorities.

The contractor shall provide all labor, material, and other services required to mechanically demolish buildings (trailers) 412 and 413, remove utilities, remove existing asphalt and provide new asphalt/ parking area. All debris shall be removed from the NIST campus.

Contractor shall field verify all dimensions noted herein and on all contract documents. The word trailer and building are used interchangeably in this SOW.

1. Location

The project and modular trailers identified as Buildings 412 and 413 at located on the National Institute of Standards and Technology (NIST) Campus at 100 Bureau Drive, Gaithersburg, MD, 20899.

On campus these buildings are further located to the east of the Building 224 / 226 parking lot in the Building 224 / 226 loading dock driveway area.

2. General Information

2. aBuildings 412 and 413 consist of

  • Eight 12’ x 60’ modular / portable trailers configured end to end and side to side to produce two separate buildings (blocks) with a 24’ x 120’ foot print.
  • Each 24’ x 120’ section is supported on 16” x 16” masonry piers.
  • The main steel beams under the trailer are 10” x3” x 3/16 I beam.
  • Cross members and other associated framing was not identified.
  • The trailers hitches lay under the edges of the trailers and are made from the same above 10” I beam.
  • The trailer axels are lying unattached under the trailers without any wheels or tires.
  • Wheels and tiresare lying underneath trailers.
  • Both buildings have aluminum siding and a metal roofing.
  • Each trailer section has anexterior wall mounted Bard air conditioner.
  • Each interior room /office has a window and a pressed wood hollow core door.
  • The walls are lightweight gypsum board with a decorative wallpaper covering.
  • Flooring is carpeting or tile.
  • On the south side of the building is a pressure treated wood walkway and ramp.
  • The walkway is 50’ x 7’ and the ramp facing to the south is 25’ long x 5’ wide.
  • All electrical and plumbing services have been disconnected from the buildings.
  • Air conditioner units are empty of refrigerant and oil.

2.b Contractor to Salvage for Government:

  • The contractor shall salvage and turn over to the Government two of the four Bard air conditioning units. The COR will identify the two (2) units to the contractor.
  • The contractor on the other two units NOT to be salvaged shall be disposed of by the contractor. The contractor shall retrieve the refrigerant from the two units NOT to be salvaged. The contractor shall submit proof the refrigerant has been recovered by a CFC licensed technician.

3. Standards of demolition and related activity

3-a. General

3-a-1 The demolition of Buildings 412 and 413involves removal of all of the following: all metal, wood, tires, and support components, building service infrastructure, and existing asphalt and curb under the existing buildings.

3-a-2Contractor is not permitted to burn or explode with dynamite or other similar chemicals to demolish facilities within this contract.

3-a-4Contractor is not permitted to remove the structure in whole or in sections off the NIST campus due to the coordination requirements to coordinate road closures on the NIST property.

3-a-5Contractor is not permitted to conduct sales or other salvage operations where the general public would remove materials from the construction area.

3-a-6The existing asphalt and curb shall be removed after building demolition.

3-a-7The stone drip edge shall be removed and replaced with soil and planted with grass seed.

3-a-8New asphalt and concrete curb shall be provided after building demolition.

3-a-9See NIST Specifications attached to this document:

  • CONCRETE PAVING
  • ASPHALT PAVING
  • EARTH MOVING
  • LAWNS, GRASSES

4. Safety

4-a-1 In addition to all other aspects and safety requirements of the contract, the contractor shall:

  • Prior to any demolition starting the contractor shall independently access the buildings to ensure all electrical hazards, other services, HVAC units, and plumbing services are rendered safe, removed and or severed. Any and all Utility outages shall be on a Saturday from 6 AM to 2 PM. Contractor shall request any utility outage 14 days in advance.

5. Scope of Work

5-aGeneral

5-a-1 The contractor shall have two consecutive daysduring Monday to Friday to complete the demolition and removal of all building / trailer complex and wood walkway and ramp known as Buildings 412 and 413.

The two days does not include the asphalt and curb removal. The two consecutive days start after the first element of the trailer is removed. Interior demolition activities are not counted within the two consecutive days.

5-a-2After trailer demolition the asphalt, curb, pipe, and electrical work can commence. The contractor shall remove all asphalt and curbing in one calendar day.

5-a-3 The contractor assumes all responsibility and ownership of and for buildings 412 and 413, removed asphalt, andall other debris once any demolition or disassembly of any kind begins.

5-a-4 The contractor shall obtain all required permits and authorization to operate his trucks, trailers, roll off dumpsters, or other transportation / load carrying equipment, or that of others he contracts, on the city, county, state, and federal roads operated over in the performance of this contract. Contractor is solely responsible for load covering and any damages to others property during any demolition or transport of debris.

5-a-5The contractor shall maintain a clean demolition area actively collecting and disposing of paper, insulation, or other item that “blow” away from the area as work progresses. Further, thecontractorshall comply with the dust control regulation see paragraph 7.

5-a-6 The contractor shallcoordinate the start date of demolition with COR and NIST Police to restrict all access to the demolition area and to coordinate delivery of equipment and traffic control items. The contractor shall erect a chain link temporary fence (at least 5 feet tall) to keep non-contractor personnel out of the space.

5-a-7 The contractor, with coordination with NIST police, shall be responsible for demolition area access and egress control, maintain an accessible area for both Buildings 224 and 226 loading docks, maintain the driveway area to the area parking lot and loading docks free of metal or other debris. Contractor shall mechanically sweep the entire demolition area between buildings 224, 226, and the concourse between buildings 225 and 226 after all building 412 and 413 have been removed and prior to opening the driveway area to foot or vehicular traffic.

5-a-8 The contractor shall supply all industry standard and recognized mechanical demolition equipment, trucks, roll-offs, and additional equipment to demolish buildings 412 and 413. The contractor shall supply trained and experience operators for all project equipment.

5-a-9The contractor shall haul all demolished material off site for disposal, reclamation activity, or other disposal or recycling activity. Proceeds from recycling or re-purposing building components salvaged belong to the contractor. All disposal locations shall be licensed by a town or county within Maryland.

5-a-10The contractor shall demolish the trailers with recognized standard construction demolition heavy equipment utilizing buckets, booms, hooks, and or jaws. Demolition by hand unless in direct support of the mechanized demolition is not authorized. Any wrecking balls are not permitted.

5-a-11 The contractor shall haul all demolition debris away on his trucks or trucks contracted by him to the proper final disposal area. The contractor shall provide COR trip or landfill / disposal tip tickets from the final county or state approved disposal location.

5-a-12 The contractor shall remove and dispose of the masonry piers, trailer tie downs, tie down anchors, metal framing, axels, wheels and tires, trailer tongues and any other trailer related debris.

5-a-13 As part of the building demolition and two day demolition time frame, the pressure treated walkway and ramp shall be demolished and disposed of by contractor including posts and concrete post anchors buried in the ground. Holes shall be filled with organic material and leveled.

5-a-14 Any ruts made by contractors’ equipment in the grass area south of the buildings, and the area under the removed wooden walkway / rampshall be leveled, filled and seeded with a NIST specified grass seed as and appliedprovided by contractor.Final acceptance of contract requires successful growth of grass as specified in Demolition Buildings 412 and 413 LAWNS, GRASSES.

5-a-15 Contractor shall dispose of all trash, insulation, wire, or any trash left in the project area.

5-a-16 Contractor shall mechanically sweep the entire demolition area between buildings 224, 226, and the concourse between buildings 225 and 226 after building 412 and 413 has been removed and prior to opening the driveway area to foot or vehicular traffic.

6. Scope of Work Major Elements

6-a-1Electrical : The contractor shall modify, alter, or remove the following electrical items and other electrical conditions formally supplying buildings 412 & 413 rendering the former electrical service and components safe, code compliant, and weather tight for the long term.

6-a-2Outage schedule – must provide 14 days’ notice

  • Coordinate with COR and building occupants for outage to for building 224, north side, east and west 208 V Buss. Secure power using LOTO to prepare to remove buss plugs that supplied power to the trailer electrical panel.
  • Remove wire from bus plugs; remove buss plugs and close access blanks on buss duct.
  • Demolish the four 2” conduits on each side of the cross over to the junction boxes at 4” conduit on the center cross over chase.
  • Use knock out blanks to fill holes left by demolished conduits.
  • Pull and scrap wire from attic to outside trailer panel board cutoff electrical enclosures.
  • Cut off panel board angle posts at pad level and scrape the aluminum panel board posts.
  • Cut offthe 4” conduit at a uniform height (4-6”) above concrete pad and remove the electrical panel board and scrap.
  • Seal conduit openings weather tight with expandable foam 4” deep. Trim excess foam when dry and paint with enamel paint – silver.
  • Cut off the 4” galvanized pipe on the east side of the concrete pad and fill pipe to 4” with expandable foam. Trim excess foam when dry and paint with enamel paint – silver
  • Cut and remove any conduit left from ground level to point of disconnect (cut) near / under trailer framing / floor. Seal conduit going underground with expandable foam.
  • Remove the electrical box at the southwest end of building 413 and cut off at ground level and seal conduit with foam.

6-a-3Electrical conduit removal from bus plugs to junction box on each side of the cross-over consists of eight total conduits each 10 to 12” long.

6-a-4Knock out blanks on both junction boxes at the attic crosswalk: Cooper, Thomas & Betts, Eaton or other manufacture, snap in.

6-a-5Expandable Foam: GREAT STUFF Gaps and Cracks Insulating Foam Sealant or other similar commercial product.

6-a-6Silver paint: Rustoleum or similar enamel silver spray paint.

6-b-1Piping:The contractor shall modify, alter, or remove the plumbing or piping and other plumbing or piping conditions formally serving buildings 412 & 413 rendering the former plumbing or piping and components safe, code compliant, and weather tight for the long term.

  • On the south side of the trailers (buildings 412 and 413) cut off, cap,and abandon or remove to pit by electrical pad the below ground piping formerly used to provide water or drain services to trailers. If removed to pit by electrical pad, cap or plug pipes with the appropriate PVC or other same pipe material type fitting.
  • The 4” black poly gutter and condensate drain lines around the trailer perimeter shall be removed during asphalt removal.
  • Replace, afield fabricated valve box level to ground level on the City Water southof the Building 412 location. See sketch.

6-b-2Expandable Foam: GREAT STUFF Gaps and Cracks Insulating Foam Sealant or other similar commercial product.

6-b-3City water valve box: Field fabricated from 6” schedule 40 PVC pipe, 6” soc x thd schedule 40 PVC adapter, and 6" Brass countersunk threaded plug (MPT) (Sioux Chief or similar) painted blue with Rustoleum or similar enamel blue spray paint.

6-c-1Asphalt and Curb: The contractor shall remove the existing asphalt and concrete curb from under and around buildings 412 and 413:

6-c-2Starting from the southeast corner of the project parking area, closest to building 225, measuring west 267 feet, more or less, to within two feet of the storm drain where the curb starts an arch to the loading dock of Building 224 and 34 feet north: remove the asphalt and curb.

6-c-3Remove the stone formerly used as drip edge just south of the existing curb.

6-c-4The contractor responsibilities as found in section 5. Scope of Work, 5-a General apply to asphalt removal.

6-c-5See NIST detail drawings STD0160 and STD-154 and the NIST Asphalt and Concrete specification for new asphalt and curb installation.

6-d1Earthmoving and Lawn: The contractor shall remove the existingstone formerly used as drip edge just south of the existing curb and replace with satisfactory soil from off NIST campus.

6-d-2 Fill level and seed any disturbed area from the City Water valve box work.

6-d-3Fill, level, and seed any area rutted by Contractor’s equipment, dug, or otherwise requiring reseeding to grow grass.

6-d-4 See NIST specification for Earthmoving and Lawn and Grasses.

7. Dust Control

7.1Contractor shall submit a dust control plan in accordance with Maryland Department of the Environment “2011 Maryland Standards and Specifications for Soil Erosion and Sediment Control” H-5.

8. SUBMITTALS

8.1A. Dust Control Plan

B. Outage Request

C. Asphalt Product Data

D. Asphalt Material Certificates

E. Grass Seed Product Data

F. Grass Seed certification of Seed

G. Grass Seed – Installer qualification

H. Concrete Paving – Product Data

I. Concrete Paving – Design Mixtures

8.2All Submittals shall be submitted to the COR four (4) days after the NTP. The COR will review and return submittals to the contractor within five (5) days.

9. Performance Period:

9.1The buildings and area are available for contractual work once the Notice to Proceed is issued. The contractor shall be finished within 21 days of starting field work. Task order period of performance is 50 days.

10. Materials and Labor:

10.1Government will provide no material or labor

Specifications:

Specifications start on the next page.

  • CONCRETE PAVING
  • ASPHALT PAVING
  • EARTH MOVING
  • LAWNS, GRASSES

End of Statement of Work