PWS.pdf

Statement of Work (SOW)

Fiscal Year 2024

Strip and Refinish Wright Brothers National Memorial Visitor Center Floors Service Contract

1. Background:

The Historical Wright Brothers Visitor Center (VC) was constructed in 1960. The VC is open daily from 9:00am – 5:00pm with visitation reaching 450,000 a year. The VC recently underwent a rehabilitation which installed new flooring meeting historical materials. The current Distinct Designs Rubber Tile and Terrazzo floors were installed in 2018. Recommended treatment and maintenance include specific materials and methods for the Rubber Tiles in the Visitor Center Lobby, Flight Room, and Bookstore, as well as the Terrazzo floors in the restrooms. The National Park Service (NPS) staff perform only the daily sweeping and mopping and do not have the materials and equipment needed for the maintenance requirements. With the high volume of foot traffic over the past 3 years, the floor has accumulated scuff marks and become highly soiled thus requiring a new floor finish. The total square footage is 7,135 sq ft it is broken up in the following way: Men’s Restroom 230 sqft, Woman’s Restroom 230 sqft, Bookstore 950 sqft, Lobby 2,750 sqft and Flight Room 2,975 sqft. Benches, area rugs/floor mats, crowd ropes/stanchions are placed in several rooms.

2. Required Services:

The contractor shall provide all labor, tools, equipment, materials, and supervision required to successfully complete this contract. Cleaning and treatment shall be conducted at the following timeframes: October/November/December 2024

The floor shall be stripped and cleaned according to the manufacturer’s recommendations. A new finish coat with a minimum of five layers shall be applied to the newly cleaned floors.

Work must be performed nightly after business hours. Work shall be performed in each room so that adequate time is provided to allow for proper drying of the new floor finishes. This service contract shall be accomplished over several nights dividing the square footage into sections so that each section is completed (including drying) by 8:00am. The hours of operation for this work shall be 5:00pm to 8:00am.

In the event the floors are inadequately completed by 8:00 am and require correction, repairs, or re-work by the Contractor, the contractor shall respond to the Contracting Officer (CO) within 24 hours regarding action to be taken to repair issues or concerns related to the floors.

3. Manufacturers Recommended Cleaners, Finishes, Finish Removers:

Manufacturers Recommended Cleaners, Finishes and Finish Removers must be used on Rubber Tile and Terrazzo Floors. These are the required products to obtain the desired results. No substitutions or similar name brands will be allowed on the recommended cleaners, finishes or removers.

Rubber Tile Floor:

Excelsior NC-900 Neutral Cleaner

Excelsior PF-960 Acrylic Gloss Floor Finish

Excelsior PR-930 Performance Remover

Terrazzo Floor:

Key #570 Polysiloxane Sealer

Trisodium Phosphate (TSP) cleaner

120 Grit Sandpaper

Isopropyl Alcohol

4. Contractor Responsibilities:

Flexco Distinct Designs Rubber Tile and Terrazzo floors:

1. The contractor shall remove approximately 12 benches, 2 rugs and one barricade with five polls from the Flight room to another location before beginning work. The contractor will ensure that all items are back in place every day by 9:00am.

2. The contractor shall remove approximately 7 Stands from the Book Store and 2 trash cans from the restrooms to another location before beginning work. The contractor will ensure that all items are back in place every day by 9:00am. The bookstore will be the test area it will be done in conjunction with the restrooms on the first night the project starts. The test area after completion will be approved the next day by the COR and District Supervisor before allowing the Contractor to move to another section of the floor inside the Visitor Center (VC).

3. The restrooms will be completed during a two-to-three-night process. The first night will be the cleaning and applying one coat of sealer on the Terrazzo floor then moving onto the Bookstore/Test area. The second night will be applying the second, third coat on the Terrazzo floor and then moving onto another section in the VC. The fourth coat of finish may be applied on the last night as drying times will dictate your ability to do another coat.

4. The contractor shall remove approximately 1 bench, 2 rugs, 1 exhibit, 1 Wright Brothers cardboard cutout and the soar like a bird display from the lobby to another location before beginning work. The contractor will ensure that all items are back in place every day by 9:00am.

5. Contractor shall follow all manufacturer recommendations for rubber tile and Terrazzo floors.

Finish Removal:

1. Sweep or dust mop and vacuum flooring to remove any dirt, dust, or debris.

2. For a normal stripping, mix 32 ounces of Excelsior PR-930 per gallon of clean, potable water.

For a heavy removal use 64 ounces per gallon of clean potable water. Most floors will require the heavy removal mix for stripping.

3. Using a new or thoroughly cleaned mop, apply the finish remover to the flooring material and allow to remain on the surface for only 10 -20 minutes, do not allow remover to dry on the floor.

4. If using a low-speed floor buffer, single disc scrubber (175-350 rpm), Scrub the floor while wet using a 22-gauge soft bristled scrubbing brush or a 3M 5100 Red Cleaning Pad.

5. Use an auto-scrubber, wet vacuum, or a clean new mop to remove all excess cleaning solution. Rinse the area with clean, cool water at least two times and allow floor to dry entirely.

6. Reapply Excelsior MF-940, GF-950 or PF-960 per the installation instructions in 2-3 coats.

Allow each coat to dry completely before applying additional coats.

Initial Maintenance:

1. DO NOT use Kerosene, Gasoline, Naphtha and/or other solvents to clean rubber.

2. DO NOT use vacuums that have a beater bar or electric brooms with hard plastic bottoms or no padding, as this may cause discoloration, scratching and loss of sheen.

3. DO NOT use highly alkaline or acidic cleaners.

4. DO NOT use detergents, abrasive cleaners or “mop and shine” type products (such as Bleach, Pine-Sol, Clorox Soft-Scrub, Fabuloso, Mop & Glo, Mr. Clean, Murphy’s Oil Soap, and similar unapproved cleaners), as these will all damage, soften or discolor the flooring materials.

5. DO NOT use sweeping compounds or cleaning agents containing oils or solvents.

6. Sweep or dust mop and vacuum flooring to remove any dirt, dust, or debris. DO NOT use vacuums that have a beater bar or electric brooms with hard plastic bottoms or no padding, as this may cause discoloration, scratching and loss of sheen.

7. Mix 2-4 ounces of Excelsior NC-900 Neutral Cleaner per gallon of clean potable water. Use a clean mop to apply cleaning solution to the area and let stand for 5-10 minutes. If flooring is highly soiled allow cleaner to remain on the surface for an additional 5-10 minutes before scrubbing and removing.

8. Reclaim all cleaners and strippers and dispose of offsite (DO NOT pour down the drain).

9. If using a low-speed floor buffer, single disc scrubber (175-350 rpm) or an auto-scrubber, buff floor while wet using a 22-gauge soft bristled scrubbing brush or a 3M 5100 Red Cleaning Pad.

10. Use an auto-scrubber, wet vacuum, or a clean mop to remove all excess cleaning solution.

Rinse area with clean cool water and allow floor to dry entirely. Ensure flooring area is clean and that all cleaning residue has been removed (this may require additional rinsing).

Finish Application:

1. Ensure that initial maintenance has been conducted prior to applying floor finish. Flooring must be completely free of dust, dirt, debris, cleaning residues, mold release agents and any potential contaminates. The COR must inspect the floors prior to addition of any finish applications.

2. Apply Excelsior PF-960 per the installation instructions in 5 coats. Allow each coat to dry completely before applying additional coats.

Terrazzo Floor:

1. Sweep all dirt and debris from the surface.

2. Cover drains so that the cleaning solution can be reclaim and disposed of offsite.

3. Clean floors with a swing scrubber and a mild biodegradable detergent such as Trisodium Phosphate (TSP) in powder form with HOT water, mixed per manufacturer’s instructions. Areas that you cannot use the swing scrubber, you must scrub by hand.

4. Vacuum and mop-up all cleaning materials from the surface.

5. Mechanically abrade (sand or screen) the surface with 120 grit sandpaper to remove all surface discoloration (in areas that need it) and impart a uniform surface profile to accept a seal coat.

6. Vacuum all dust and debris from the surface.

7. Solvent wipe the entire floor surface using new clean rags with Isopropyl Alcohol to remove all remaining dust from the substrate.

8. Wipe floor with a solution of 2 parts water to 1 part bleach allow the solution to sit for at least 30 minutes before removing this solution with new and clean rags.

9. Allow floor to dry completely before applying sealer coat.

10. Sealer Coat: (only one coat needed)

a. Thoroughly mix each component prior to combining. Mix three (3) parts by volume of Part A (Resin) with one (1) part by volume of Part B (Hardener) for three minutes very thoroughly with a low-speed electric drill and jiffy mixer.

b. Key #570 can be poured in ribbons, spread with a squeegee, and back rolled or applied using dip & roll method. Use a 3/16”-3/8” nap phenolic core roller at a spread rate of 200-500 ft2 per gallon to achieve 2.75-7 mils dry film thickness. Application at coverage rate of >250 ft2 per gallon (<6 10 mils) yields a variable orange peel texture.

Do not exceed 10 mils or improper cure development may result.

11. Do not apply if surface temperature is below 50ºF.

12. Care should be taken to minimize the entrapment of air caused by over rolling.

5. Management:

The contractor shall manage the total work effort in accordance with effective and efficient management principles and safe working practices to ensure on-time completion of this contract. The contractor shall ensure work is scheduled so that work is started and accomplished in the evening hours and completed to allow for drying prior to 8 am each morning.

6. Safety & Environmental Compliance:

1. Contractor shall comply with pertinent provisions of the Occupational Safety and Health Act (OSHA), and state, local, safety, laws.

2. Contractor shall comply with pertinent Environmental Protection Agency laws and regulations.

3. The Park safety officer has the authority to issue restraint or cease-and-desist orders to the contractor when violations or unsafe acts are present and threaten Government and contractor employees or damage to Government property.

4. The contractor shall immediately report to the Contracting Officer, COR, and Park safety officer all accidents resulting in employee injury or death or damage to property while performing this contract.

7. Insurance:

1. The contractor shall furnish proof of workers compensation insurance to the Contracting Officer for those employees performing work related to this contract and shall comply with the Workman’s Compensation Laws of the State of North Carolina.

2. The Contractor shall maintain a level of insurance that will protect the contractor and the Government from any claims because of bodily injury (including death) and property damage which may arise from and during the performance of this contract and shall submit proof of insurance to the Contracting Officer.