B03_Atch_1_Statement_of_Work.pdf

Statement of Work Roof Refurbishment Project

USGS Guam Magnetic Observatory

Project Background

The USGS Guam Magnetic Observatory was constructed in 1966-67 on Anderson Air Force Base property on the northwest side of the island of Guam. The observatory contains 6 buildings comprising of approximately 31 acres of land. The buildings currently include two Quarters Buildings (occasionally occupied by short term tenants), a Shop/Garage Building, a Combo (Variations) Building, an Absolutes Building, and an Office Building (Fig. 1). The observatory serves as one of the links in the U.S. Geological Survey’s network of seismic and magnetic observatories. The site collects vital scientific data that is utilized domestically and internationally; therefore, the upkeep and maintenance of these buildings are critical to the operation and maintenance of the site.

Project Description

The main objective of this project is the resurfacing of the roofs of two buildings. The Office building and the Shop/Garage building (Fig 2 and 3). The two buildings support a 4” thick concrete roof slab that slopes 1/8” per foot along the width of the roof, from the back to the front.

The roofing construction is composed of 3000 Psi rebar reinforced concrete slab, tied into the building’s supporting structure. The roofs are presently covered with an elastomeric roof topping system that is showing large amounts of degradation due to time and weather. The roofs are showing signs of cracking, spalling, and minor penetrations along the entire surface.

Office 28’-8” wide × 48’-8” long to include eaves extending 2’-4” off each side.

Shop/Garage 31’-0” wide × 46’-0” long to include eaves extending 3’-0” off each side.

Original roof Contract Drawings can be provided upon request.

Once the awarded contractor receives the notice to proceed (NTP), the contractor shall submit a construction schedule per the clause in Federal Acquisition Regulation (FAR) 52.236-15, “Schedules for Construction Contracts”. The work, clean up and final approval shall be complete no later than thirty (30) business days from the NTP.

Project Location:

USGS Guam Magnetic Observatory 1692B Kayen Medidan Lenao Dededo, Guam 96929

USGS Points of Contact (POC)

Contracting Officer (CO): TBD

Facility Manager (FM): Rosa Chandler USGS Facility Manager rchandler@usgs.gov

Support Representative (SR): Tom Hinkle Project Coordinator 671-355-4014 (office) Thomas_Hinkle@usgs.gov

Hours of Operation

All physical construction work conducted on-site shall be coordinated with the SR. All construction work shall occur between the hours of 7:00 AM and 6:00 PM. No activities shall occur at night, during the weekend, or on Federal holidays without proper written approval from the CO.

Note: The Quarters are occasionally occupied by employees from different federal agencies.

During the Project’s onset and when work directly affects them, the agency’s’ points of contacts will have to be coordinated with to avoid any undue issues. Coordination shall occur 72 hours in advance of any work-related issues and shall be done through the FM and the CO in writing. If the work is not coordinated in time, the work shall not occur until a time is agreed upon.

Scope of Work

The project scope includes removing the existing elastomeric topping, cleaning and refurbishing the concrete slab, and then reapplying an approved 10-year warranty elastomeric solution.

Task 1: Remove and prepare the roof concrete surface for new application. Complete within 14 business days of the NTP:

1. Provide protection of any roof top systems (i.e. antenna, communication devices) that will interfere with the proper installation of the new elastomeric system. Note: if removal is necessary coordinated for removal with the FM, prior to doing so.

2. Prepare roof’s surface using an aggressive/abrasive removal technique, such as a dry or wet sand blasting, or dry-ice blasting. Ensure proper cleaning is completed to allow for elastomeric adhesion. (See manufacturer’s guidelines for suggestions.)

3. Power-wash roof to clean any remaining residue. Monitor for any leaking into the building. If interior leaking occurs, it is the contractor’s responsibility to clean, repair, and replace anything that is damaged.

4. Ensure the substrate surface is free of damage caused by the stripping process or due to weathering, or age. The surface shall slope to that of the original 1/8” per foot design. The rain shall shed from the roof and its surface shall not allow for ponding or puddling. The contractor shall repair anything that may cause issues with leaking, spalling, or the installation of the new elastomeric topping.

a. Prepare and “shape” any damage in the concrete substrate using materials according to the manufacturer’s standards. Fill protrusions and cracks with cementitious and/or elastomeric patching compounds as recommended by the coating manufacturer.

b. Infill and reshape low or irregular surfaces (tool marks) in the existing concrete surface with a grout-type patching compound approved by the coating manufacturer.

c. Prepare transitions from horizontal to vertical surfaces (e.g., fascia) using fillets of elastomeric compound.

Task 2: Resurface the roof (Follow manufacturer’s guidelines for the proper application): Shall be completed within 30 business days of the NTP.

1. Apply bonding agents and primers to the existing concrete surface as required for the cohesive bonding of all patching materials and coatings to the existing concrete.

2. Apply the required number of coats of approved high-quality elastomeric coating to mil-thickness necessary to acquire 10-year coating warranty.

3. Remove protection from and replace roof top systems, temporarily removed for installation of elastomeric solution (See Task 1.1 above). Any damage to systems will need to be replaced at the contractor’s cost. Note: Coordinate installations with FM.

4. Test dried elastomeric applications to make sure the water sheds properly and no leaks occur in the interior of the buildings. Repair any leaks found. Retest patch to ensure no leaks continue.

It is very important that the successful bidder understand that this project will be conducted at a magnetic collection observatory and that the observatory is to remain operational throughout the performance of this contract. In areas where work is required and the USGS must maintain data collection activities, work shall be conducted without disruption to the USGS’s data collection activities as much as possible, and in close coordination with the USGS Facility Manager.

General Performance and Requirements

The contractor shall:

1. Furnish all labor, materials, equipment, and supervision necessary to complete the scope of work of this project.

2. If needed, the USGS FM or Representative shall identify areas where the contractor can store or place materials and equipment for short-term storage in preparation for work.

Storage and security of materials and equipment as required for the performance of the contract is the responsibility of the contractor. The contractor shall be responsible for the cleanliness of these areas and their temporary facilities.

3. The contractor shall be responsible for making all arrangements for the receipt of materials and supplies at the job site. Government personnel are not permitted to receive or sign for items delivered to the site.

4. Submit a temporary protection plan to prevent water damage to any interior elements to FM and CO. Coordinate with FM on any issues.

5. Take all necessary precautions to prevent fires or injury to the public, building occupant(s), or damage to property of others during the performance of this contract.

6. Furnish and install appropriate Occupational Safety and Health Administration (OSHA) defined construction signs, caution tape and/or barricades around hazardous work areas.

7. Observe OSHA’s fall safety requirements.

8. Thoroughly clean the work area at the end of each workday to ensure that all personnel are protected and are not exposed to any unsafe conditions. Any additional steps taken during and after daily construction to ensure safety shall be considered by the contractor and its employees.

9. All construction debris and rubbish shall be removed from the site daily and disposed of properly according to local, government and federal guidelines. The contractor may not use the onsite dumpster for disposal of construction debris.

10. Before scheduling a final inspection, all cleanings must be completed, and tools, equipment, surplus materials, and debris must be removed.

11. The contract is specific to project defined locations. The awarded contractor and his/her employees shall not wonder out of the respective project locations. Failure to do so, may result in termination of the contract.

12. No smoking shall be allowed on the site. Any smoking related damages shall solely remain the responsibility of the contractor and damages shall not revert to that of the federal government.

13. Contractor shall provide USGS with a Work Plan or some other form of documentation outlining Best Management Practices (BMP) that will be followed to ensure minimization of hazards. Contractor shall adhere to their proposed and government accepted BMP.

a. BMP shall outline how dry or wet sand blasting materials and any other debris generated during this project will be contained.

b. BMP shall outline how/where dry ice (if to be used) will be stored to ensure all necessary safety precautions are followed.

Schedule

The contractor shall (a) commence work under this contract once given the Notice to Proceed (NTP) by the CO, (b) perform the work diligently, and (c) complete the work no later than 30 business days from the NTP. The time for completion shall include final cleanup of premises and final approval. A project management schedule shall be provided at the pre-construction meeting. The schedule shall be in the form of a progress chart indicating start dates, duration of tasks and completion dates. Any changes shall be amended on the schedule and posted to all parties involved.

Pre-Construction Meeting

A pre-construction meeting will be scheduled with the USGS FM, SR, CO, and awarded contractor to discuss contract and technical questions and any other concerns regarding the project. Within 7 business days after the NTP is issued, this meeting shall be scheduled at a time determined by all parties involved. Additional meetings will be scheduled as deemed necessary by the contractor or USGS officials. The following deliverables shall be submitted at the pre-construction meeting:

1. Project Management Schedule

2. BMP Work Plan

3. Submittal of proposed 10-year warranty elastomeric roof coating product information.

Quality Assurance

1. The contractor shall be responsible for complying with all national, Federal, territorial and local laws, codes and regulations in connection with the execution of the work. All work shall be in accordance with the latest version of applicable codes and standards.

2. The contractor shall be responsible for visiting and inspecting the site to verify measurements, ascertain the nature and quality of the work to be performed, inform themselves of the general and local conditions (which can affect the work or the cost thereof), and compare the contract specifications with the work to be performed. Failure to do so will not relieve the awarded contractor of their responsibility for estimating properly the difficulty or cost of furnishing materials and successfully performing the work in accordance with the true meaning of the specifications without additional costs to the government. Drawings furnished may not be to scale.

3. In any case of discrepancy in the contract’s specifications, the matter shall be immediately submitted to the Contracting Officer, without whose decision said discrepancy shall not be adjusted by the contractor, save only at his own risk and expense.

4. The contractor may use utility services and toilet facilities of the buildings subject to approval of the USGS Facility Manager or site representative.

5. Any changes affecting the scope of work shall originate from or be approved by the Contracting Officer in writing.

6. All materials and workmanship shall be subject to the inspection and approval of the USGS FM and SR. All work unsatisfactorily performed shall be promptly corrected and made acceptable to the Government at no extra cost.

7. The USGS FM and USGS SR shall perform final work inspection and acceptance, with the contractor on-site, upon completion of job performance.

Materials

The contractor shall furnish all supplies, materials, and equipment necessary for performance of the work included in this contract unless otherwise specified. Materials and supplies to be used shall be commercially available products of reputable manufacturers or suppliers and shall be of a quality to conform to applicable Federal Specifications.

Employees

The contractor shall be responsible at all times for the supervision and control of the employees that may be assigned to render services under the contract. Fully qualified work personnel shall be available for work at project beginning and shall be maintained throughout the period of performance. At all times, the work under this contract shall be carried out in such a way that there is a minimum of interference with Government activities.

Special Conditions

1. It is very important that the Contractor understand that the location of this contract will be at a magnetic collection observatory and that the observatory is to remain operational throughout the life of this contract. In areas where work is required and the USGS must maintain data collection activities, work shall be conducted without disruption to the USGS’s data collection activities as much as possible, and in close coordination with the USGS Facility Manager and/or Site POC.

2. The Contractor shall not work or store equipment or materials within a 300’ radius of the Variations and Absolutes buildings on-site unless approved by the USGS Facility Manager. Any such materials, located within that radius shall be 100 percent non-ferrous (Non-magnetic) and shall be subject to inspection and approval by the USGS before installation prior to storage. (Fig. 4)

Indemnity

The contractor shall confine all work on Government premises to areas authorized or approved by the Contracting Officer or Facility Manager. The contractor shall save and keep harmless and indemnify the Government against any and all liability claims, and costs of whatsoever kind and nature of injury to or death of any person or persons and for loss or damage to any property (Government or otherwise) occurring in connection with or in any way incident to or arising out of the occupancy, use, service, operations, or performance of work in connection with this contract, resulting in whole or part from the negligent acts or omissions of the contractor.

Figure 1: Site Layout

Figure 2: Office Building

Figure 3: Shop/Garage Building

Figure 4: Exclusion Zone