ATTACHMENT NUMBER 1 SAMA Hawkes House Fence and Gates Statement of Work 041020.pdf

Replace and Refurbish Fence and Gates Hawkes House

Salem Maritime NHS Salem, Massachusetts

PMIS 237492A

1. Location and Significance The Hawkes House is located at 174 Derby Street, Salem MA. It is part of the Salem Maritime National Historic Site. The fence is on the south and west side of the building. The Hawkes House is an historic building. It has formed an important part of the Salem waterfront historical scene from 1780-81 to date. It is the first example of a structure designed or built by Salem’s noted builder architect, Samuel McIntire. The fence to be replaced also has significant historical value. Although it was built in 1939, it was based on McIntire’s original plans. For this reason, replacement in kind with attention to detail is extremely important.

2. General Intention and Overview The purpose of this contract is to remove and replace in kind the existing fence and gates. There is a two-section carriage gate spanning the Custom House Court. This gate has been removed and is in storage. This gate will be removed from storage and refurbished, and then installed.

Awardee will provide supervision, labor, management, supplies, equipment, disposal and any other services as required to complete the project.

The fence runs along the west and south sides of the Hawkes House. It is supported by a poured concrete footing which runs the length of the fence. The upper wooden portion of the fence consists of panels made up of a top, middle and bottom rail, posts, and pickets. A carriage gate made up of two sections spans the Custom House Court (cobble driveway). There are two gates which are pass-throughs for foot traffic which are designated as “foot” gates on the construction plans. The foot gates match the appearance of the fence panels.

The foot gates are supported on each side by metal anchor pickets. These anchor pickets are identical in appearance to their wooden counterparts. They are anchored by the concrete footing.

The carriage gate is supported by the wooden posts at the top and to the concrete footing at the bottom. Some of the fence panels also have a metal anchor picket approximately halfway between the posts. The exact method of attachment of the anchor pickets to the concrete will be determined in the field as they are not accessible until demolition of the fence. The metal anchor pickets will be reused if possible.

All hardware such as hinges, gate braces, and latches shall be removed and retained for reuse.

3. Measurement and source documents NPS has original blueprints from 1938 that have been scanned and converted to electronic format. Details of the existing fence and gates will also be used to inform decisions on this project, where these differ from the plans the Contracting Officer’s Representative (COR) will make the final determination on construction details of the new components.

The measurements included in this document are to be considered close approximations. The contractor shall verify all measurements and quantity of materials, along with relevant source material, to develop a clear understanding of the proposed project and associated issues. Any questions or concerns should be directed to the CO or COR.

Awardee will provide the following minimum documentation at the completion of the project:

A. Any shop drawings created for execution of the project B. As-built drawings of the completed project in electronic format C. Photos of details obscured by paint or interference ( i.e., preservation work on metal pickets before painting, interior of post boxes showing arrangement, a minimum of 3 photos showing each type of post support, primed interior surfaces for different types of post and box arrangements, etc.)

D. Fastener schedule if all details not shown in as-built drawings showing all relevant details, must indicate type, size, material, location of all fasteners

4. Description and Details The awardee will remove and replace in kind the existing fence and two “foot” gates, and re-furbish and install the Custom House Court Gates across the cobble drive. The Awardee will provide supervision, labor, management, supplies, equipment, disposal and any other services as required to complete the project.

A. Posts: There are 16 wooden posts. Heights from the top of the concrete footing to the lower edge of the cap vary from 48 inches to 66 inches. The posts are 11 ½” x 11 ½” wide. The sides are made up of 1” thick solid wood stock. Caps are approximately 19 ½” square at their widest dimension and 2” thick, with a solid finial block on top. Just below the cap are a series of transitional post trim moldings, 3 ½" below these there is a band of decorative molding. At the bottom is another combination of decorative base trim moldings. Most posts (approx. 14) are supported by vertical metal bars bolted into a wood block that is bolted to the concrete foundation. The two posts that support the drive gates (and possible a few others , approx. 2) are supported by a steel post in the center of the post. Metal posts and bars will be re-used if they are stainless steel, or other steel in good condition with no heavy pitting and thickness is reduced by less than 1/3 of its original dimension. When re-used they will have rust removed and be coated with two coats of a galvanizing compound. Steel in poor condition will be replaced with new Stainless or galvanized steel.

B. Rails: Each fence panel and gate has a top, middle and bottom rail. The rails are about 4 ½” wide, 2” high at the center which bevel to 1 ½” at the edges.

The bottom of the rail has a ½” bead running the length of the rail. The spacing between the rails varies to accommodate the step down of the panels to deal with the sloping terrain. But generally, the spacing between the top and middle rails is 24” from bottom edge to bottom edge. The bottom edge of the top rail is 17” from the top of the finial. There are 12 panels of fencing, 10 of which the length of rails is between 11 feet and 14 feet. There is one section 5’ 4 ½” and one section 2’ 5” in length. The two ‘foot’ gates are about 4’ wide.

C. Pickets: The pickets are 1 ¼” in diameter which taper to a point at the top.

There are alternating long and short pickets the entire length of the fence and gates. The long pickets are mortised into the base rail, pass through both middle and top rail and protrude approximately 7” above the top rail. Long picket lengths vary from 45” to 52”. There are 157 long pickets. Short pickets are mortised into the bottom rail and pass through the middle rail and protrude 7” above the middle rail. The length of the short rails varies from 21” to 30”.

There are 160 short pickets. There are metal anchor pickets on either side of the foot gates. These support the rails which have the gate hardware attached.

The hardware is attached to the rails rather than the posts. There are also metal pickets near the center of some of the panels. The metal pickets will be re-used if possible. Any picket that is reduced by 1/3 or more of its original diameter in cross section in any location will be replaced in kind and installed new. On re-used pickets, any signs of rust or deterioration will be removed.

After rust removal the picket will be repaired with a 2-part, metal fairing epoxy and treated per “Surface preparation, primer and paint” section.

D. Gates and hardware: There are three gates. There are two gates which are pass-throughs for foot traffic which are designated as “foot” gates on the construction plans. The hinges are attached to the rails with strap hinges and there are wrought iron braces running diagonally from top rail on the hinge side to the bottom rail on the latch side. There are latches and handles. The rails are cut at an angle on the latch side so as to form a stop when the gate is closed. The 3rd gate is the Custom House Court Gate which is made up of two sections, one being approximately 9’ 3” and the other 8’ 7”. These gates are in storage. Approximately 6 areas showing rot or checking are to be repaired with either epoxy consolidator, putty or dutchman. One section of gate has approximately 2 feet of the bottom rail broken off. This broken piece needs to be replaced with a scarfed dutchman. It appears that the bottom hinges attach to the concrete footing, while the others attach to the posts. The concrete/hinge attachment needs new anchor bolts installed in the concrete with a suitable epoxy based adhesive. Gate and all other hardware will be carefully removed, and all components will be scraped and or sanded, primed and painted with two coats each of exterior primer and finish paint and treated per “Surface preparation, primer and paint” section. Any hardware piece that is reduced by 1/3 or more of its original diameter in cross section in any location, or is not functional, will be replaced in kind and installed new. All gates will be reinstalled in their original configuration.

E. Concrete Footings: A poured concrete footing runs beneath the bottom rails of the entire fence and under the posts. Once the wooden components of the fence are removed, the condition of the concrete can be assessed. Also, the connections of the fence panels and the posts to the concrete can be determined. All connecting hardware will be examined and a determination will be made as to the possibility of reusing it or if it needs to be replaced, any cracked or deteriorated concrete will be repaired by a competent mason familiar with such repairs. Assume approximately 25 linear feet of cracks and open seams, up to ¾" width, will need to be filled to full depth using either a polyurethane or epoxy based injectable compound. Approximately 4 cubic feet of damaged areas in the footings will need to be repaired by having loose material removed and filling these voids with new concrete or other suitable fillers. The connection between the gate hinges of the Custom House hinges to the concrete will be assessed and any hardware or connectors will be replaced as needed. A suitable sealant/adhesive will be applied between all wood components and the concrete footing.

F. Fasteners: All fasteners will be of 316 stainless steel. Finish screws may be used as a substitute for nails. Where screws are used, they will be counter-bored and either bunged or filled in with a suitable exterior putty.

G. Wood: Wood components will be made from mahogany, select or better, vertical grain, free of checks, any loose knots, or, knots over ¼". If mahogany is not available the awardee will suggest an alternative, rot-resistant and stable species that accepts paint well, for approval by the COR. Internal post framing and other internal support for the posts that contact the concrete or ground may alternately be made of pressure treated wood approved for ground contact.

H. Surface preparation, primer and paint: All components will be scraped and or sanded, primed and painted with two coats each of exterior primer and finish paint. Additional coats are required if needed for uniform color and proper hiding of knots, etc. The primer will be a premium exterior oil base primer that will be applied to all sides of each components with special attention paid to end grain cuts. Once the fence is assembled and in place all joints and seams will be caulked with a paintable exterior grade caulking and the entire fence will receive two coats of exterior finish paint. The concrete footing shall have all loose or peeling paint removed and the surface cleaned and prepped for priming and finish paint suitable for use on exterior concrete surfaces. Metal components that will be re-used will be stripped to bare metal and rust will be removed. New and re-used metal components will be pre-primed with two coats of a rust-inhibiting primer/paintable coating, primed with a general primer if needed, and then painted with two coats of the finish paint. The color and finish of the paint will be supplied by COR. Preparation and application will be done to manufacturers specified procedures, using compatible primers and paints.

I. Mock-up: Prior to removing the entire fence the awardee will provide a mock-up of one post and one fence section for COR approval. To inform this mock-up, the awardee may remove wood components of two posts and one rail/picket section prior to delivering the mock-up. The COR will provide approval, or comments for adjustments, within 2 business days of receiving the mock-up. If adjustments to the mock-up are required, COR response will be within 2 business days after each time the awardee provides a mock-up for approval.

5. Pre-construction conference:

Prior to commencing work, the Contractor shall meet in conference with the Contracting Officer and the COR at a time specified to discuss and develop mutual understandings relative to scheduling and administration of work.

6. Warranty:

All materials and services furnished as part of this contract, other than those that are covered by a separate manufacturer’s warranty that exceeds one year, will be guaranteed to be free of defects for a period of one year. All items from the performance of this contract that require repair or replacement within that period of time will be corrected by the contractor at no additional cost to the government.

7. Site Details:

Lay down and parking: The contractor may have a laydown area for material and work, in an area of up to approx. 500 Square feet, approximately 50’ x 10’, near the north end of the Custom House cobble drive, on the east side. This area may also be used for a small trailer and/or dumpster and will be coordinated with the COR during project set-up. They may also park one vehicle in the Custom House cobble drive during their work day, in areas in addition to the laydown area. A lane wide enough for NPS trucks and other equipment to access the full length of the Custom House cobble drive on its west side will be maintained. Areas used for work or lay-down by the awardee will be returned to their original condition at the end of the project, and any waste or debris associated with the project will be removed by them.

Utilities: 110v electrical service and water is available from the Hawkes House for work at the fence location, or from the garden shed near the lay-down area at the north end of the Custom House cobble driveway. There is a public restroom facility operated by NPS, typically open 10- 4, located approx. 500’ from the Hawkes House.

Delivery and Work times: The contractor will coordinate through the COR all deliveries to the job site and times of work performance. Deliveries and work will be completed Monday – Friday between 7:00 AM and 5:00 PM unless otherwise authorized. No deliveries will be scheduled on weekends or federal holidays. Deliveries outside of this schedule shall be requested and approved in advance by the Contracting Officer.

Ground Disturbance: All digging must be approved through the COR before starting. Digging may not occur without supervision from the approved National Park Service staff member due to the archaeological importance of this location, and compliance with preservation and cultural resource standards.

8. General:

Laws, regulations, and policies: The contractor shall abide by all laws, regulations, and policies regarding the National Park Service. The contractor shall follow and adhere to all reasonable requests and directions of the Contracting Officer. The contractor shall ensure that all of its activities promote the highest degree of protection to all park resources, employees and visitors.

Demolition and debris: The contractor shall not begin demolition until authorization is received from the Contracting Officer. Disposal of all debris is included in this project.

Dust and Debris Control: It is the awardee’s responsibility to prevent the spread of dust and debris to any portions of the surrounding areas, and to prevent dust and debris from becoming airborne. Any areas used by the awardee will be kept in clean and orderly condition.

Inspection: Each phase of the services rendered is subject to Government inspection during the Contractor's operations and after the completion of the task. Any defective or unaccomplished work will be brought to the attention of the Contractor by the Contracting Officer or authorized representative within 1 business day. The Contractor shall meet with the Contracting Officer or his authorized representative to discuss the work in question within 2 business days after notification of faulty performance.

Reports: During the Contractor's performance of the work any unusual condition or situation affecting or potentially affecting the outcome of work covered under this contract shall be brought to the attention of the Contracting Officer's representative in a written report or memorandum.

Damage to government and private property: Extreme care shall be exercised to avoid damaging vehicles, trees, shrubs, plants, buildings, fences, turf, drains, manhole covers, cobbles, pavement, or brick. Features damaged or destroyed in the prosecution of the work shall be repaired or replaced as directed at no expense to the Government.

Workmanship: Use skilled and experienced personnel, carefully supervised, in such a manner as to ensure full compliance with safety requirements and to ensure work performed meets results specified in this Scope of work.

Title to materials: Except where specified in other sections, all materials and equipment removed, and not reused, shall become the property of the Contractor and shall be removed from the site. Title to materials resulting from demolition, and materials and equipment to be removed, is vested in the Contractor upon approval by the Contracting Officer to begin work. The Government will not be responsible for the condition or loss of, or damage to, such property after notice to proceed with the demolition portion of this contract.

Compliance with environmental and safety regulations: During the performance of all work under this contract, the Contractor shall adhere to Environmental Agency Regulations (EPA) and

Federal Occupational Safety and Health Regulations (OSHA), U.S. Army Corps of Engineering Safety and Health Handbook EM_3851-1, USCG 46 CFR parts 166 to 199 as well as all applicable federal, state and local requirements. If the Contractor fails or refuses to promptly comply with safety requirements, the Contracting Officer may issue an order stopping all or part of the work until satisfactory corrective action has been taken.

9. SAFETY:

Contractor will submit a copy of their Safety Program.

Awardee is responsible for ensuring and monitoring safety of workers and visitors. The awardee will make use of temporary means, such as cones or other visible barricades (no ground penetration permitted) to keep visitors and NPS staff out of the work, lay-down and storage areas.

Contractor’s employees shall be made especially aware of the presence of visitors and staff at all locations and shall take necessary precautions to safeguard their well-being.

Contractor’s employees shall follow all applicable safety standards including operating all equipment in conformance with the manufacturer's operating instructions for each, and in compliance with OSHA standards and requirements.

Precaution shall be exercised at all times for the protection of persons, (including employees) and property. The safety provisions of applicable laws, building and construction codes shall be observed. Machinery, equipment and all hazards shall be guarded or eliminated in accordance with applicable safety provisions. Vehicles shall be identified and marked the contractor as work vehicles.

The Contractor shall provide and maintain in working order during work such fire protective equipment and devices as required by applicable safety standards and as they deem necessary and suitable for any possible class or type of fires. Extinguishers shall be non-freeze type of not less than (10) pound capacity each and must be readily available to staff operating equipment.

Vehicles and attached equipment shall be properly maintained to operate at operating sound levels as determined by the manufacturer of the equipment or industry standards. Equipment that is generating excessive noise or is otherwise objectionable to the Park shall be discontinued from use, at the Park's request, until repairs can be affected. Discharge of oils or other fluids is not permitted. The SAMA/SAIR Facility Manager or COR shall be the sole judge of acceptable equipment under this section.

COVID-19: Prior to any onsite work beginning, provide, for review and acceptance, to the designated Contracting Officer’s Representative (COR) a completed COVID-19 Control Plan that meets the current Commonwealth of Massachusetts’ requirements (https://www.mass.gov/lists/reopening-general-business-guidance-documents-and-translations#covid-19-control-plan-template-). All Personnel Protection Equipment is provided to the contractor’s and their subcontractor’s employees at no-cost to the Government.