Wagonseller_SOW_7_26.docx

Scope of Work

Waggonseller Barn Exterior Repairs

Valley Forge National Historical Park (VAFO) King of Prussia, PA

Background

1. This Scope of Work (SOW) is for the Waggonseller Barn located within the Valley Forge National Historical Park (VAFO). The building is located at 2720 Audubon Rd, Eagleville, PA 19403.

2. The barn was constructed in 1815 and was renovated in 1932. The barn is on a section of Valley Forge that is not readily accessible to the public and sees little traffic. However, it has been subject to vandalism, in part due to its remote location and reduced oversight by park staff.

3. This project will provide a weather tight exterior for the building to aid in preventing further deterioration of components and it will secure the building to aid in preventing continued vandalism.

Scope

1. Contractor is responsible to field verify all estimate quantities

a. It is STRONGLY encouraged that each bidder visits the site and fully acquaints themselves with the problems and conditions they will encounter if they become the successful bidder. Since absence from visiting the project will not be considered as an excuse for misunderstanding of the requirements of the contract, bidders are strongly encouraged to visit the park and attend the pre-bid site visit(s).

2. Contractor must be knowledgeable of and adhere to all federal, state, and local laws and regulations governing the types of work included in this document. Contractor shall also follow the Secretary of the Interior’s Standards for the Treatment of Historic Properties. Contractor shall plan, schedule, coordinate, and assure effective performance to provide the services required.

a. If there is a conflict between The Secretary of the Interior’s Standards for the Treatment of Historic Properties and manufacturers recommendations, the contractor shall submit a request for information (RFI), identifying the conflict, to the COR and Contract Specialist for a determination of precedence.

3. Contractor(s) shall be licensed in their respective jurisdictions. Contractor(s) are solely responsible for measuring and verifying in field, prior to bidding, all existing dimensions, sizes, areas and conditions. Also prior to bidding, contractor(s) shall investigate and verify nature and extent of work necessary and advise NPS in writing of any discrepancies and/or omissions in the requirements.

4. This contract requires the independent Contractor, functioning not as an agent of the Government, to provide all personnel, facilities, tools, labor, equipment, supervision, transportation, correspondence, supplies, staging and materials necessary to:

a. Replace all existing roofing surfaces.

b. Repair all exterior wood components, not including door panels or window sashes.

c. Paint all exterior wood components.

i. Painted surfaces include, but are not limited to, exterior side of exterior doors, window frame exteriors, Board and Batten siding, Exposed rafter tails, trims, soffit, fascia, rake boards, and posts.

1. Window sashes and panels are not included to be painted

2. Exterior of the window frames shall be painted

d. Remove, and store within the building, selected doors and windows.

e. Install plywood security panels over the exterior doors and windows.

f. Replace the existing gutters and downspouts.

i. This will include providing and installing gutter extensions to carry the water away from the structure.

g. Remove all vines and other vegetative growth from the exterior of the building.

h. Repair areas of failed masonry and mortar.

Objectives

1. The objectives of this project are to:

a. Restore the exterior of the structure to weathertight conditions and protect the building components from further vandalism.

b. Refinish all painted surfaces on the exterior of the building.

c. Replace all roofing surfaces in kind.

d. Repair the exterior wood components.

e. Protect the existing doors and windows by removal and storage and installation of plywood coverings.

f. Provide new gutters and downspouts to properly shed water away from the building.

g. Repair all areas of failed masonry and mortar to ensure a weathertight exterior and prevent further deterioration.

Tasks and Requirements

1. General

a. The contractor shall be familiar with the requirements stated in this scope of work and meet with the park staff to gain a clear understanding of the design and functional requirements of work desired.

b. The contractor will confirm existing site conditions and measurements. Drawings, shop drawings, material samples and product submittals related to the proposed work will be prepared and submitted to the National Park Service (NPS). NPS approval shall be obtained prior to ordering materials. Work will be executed as described in the approved drawings and submittals.

c. Should hazardous materials be encountered, contractor(s) and their employees shall not conduct work with, or on, hazardous materials without proper training, certifications, protective equipment, and required notifications.

i. Any employee that will be required to work on surfaces containing hazardous materials shall have the appropriate training and certifications for working with that material.

ii. All work that disturbs hazardous materials shall follow all Federal, State and Local codes, regulations, guidelines, and laws.

iii. Upon the discovery of hazardous materials, the contractor shall notify the COR and Contract Specialist immediately. The contractor shall not proceed with the work containing hazardous materials until an approved risk assessment and safety plan have been completed.

d. Paints and finishes throughout the building, as well as flooring and insulation and other surfaces, may contain lead and/or asbestos. The contractor shall identify all areas that will require disturbance as part of each portion of this project and test these areas for the existence of lead and asbestos prior to any disturbances.

i. Testing must be performed by a licensed contractor, certified by the EPA and the Commonwealth of Pennsylvania for lead and asbestos testing.

ii. If results show the existence of any hazardous material in an area to be disturbed as part of the work, a safety plan shall be required prior to work beginning in that area that is relative to the hazard. At a minimum the plan shall include the following:

1. PPE to be used

2. Protective measures to prevent the spread of dust

3. Cleaning procedures

4. Disposal procedures

5. Clearance testing

iii. Any employee that will be required to work on surfaces containing hazardous materials shall have the appropriate training and certifications for working with that material.

iv. As a minimum, all areas identified to contain lead or asbestos shall be encapsulated with products guaranteed for a minimum of 20 years.

e. All work is to comply with local and IBC building regulations.

f. The contractor will rectify any damage to all areas on completion of the work.

g. All waste material to be taken from site and disposed of by the contractor.

h. Site shall remain tidy at all times and cleaned up on completion of work.

i. All work to be carried out in a workmanship like manner.

j. All Documentation regarding warranties, guarantees and instructional literature are to be submitted to the COR.

k. Any variations are to be priced and approved in writing by the Contracting officer before proceeding with the work.

l. All in kind repairs and replacements shall be of the same material type/species, design, dimension, texture, detailing and exterior appearance.

2. Painting

a. This category includes coating systems materials, primers, emulsions, enamels, stains, sealers and fillers, and other applied materials whether used as prime, intermediate or finish coats.

b. Product Data: The Contractor shall submit manufacturer's technical information, material safety data sheets, and application instructions to the COR for each paint material proposed for use, prior to starting work.

c. Single Source Responsibility: The Contractor shall provide primers and undercoat paint produced by the same manufacturer as the finish coats.

d. Material Quality: The Contractor shall provide the manufacturer's best quality trade sale type paint material. Paint material containers not displaying manufacturer's product identification are not acceptable. Product shall be stored in its original container when not in use.

e. Material Delivery: The Contractor shall deliver materials to the job site in manufacturer's original, unopened packages and the containers shall bear the manufacturer's name and label with trade name and manufacturer's instructions.

f. Material Storage: The Contractor shall store materials not in use in tightly covered containers in a well-ventilated area at a minimum ambient temperature of 45 degrees F (7 degrees C). The Contractor shall protect materials from freezing and keep storage area neat and orderly. Contractor shall remove oily rags and waste daily.

g. Project Conditions: The Contractor shall not apply paint when the relative humidity exceeds 85 percent, or at temperatures less than 35 degrees F (3 degrees C) above the dew point, or to damp or wet surfaces. The Contractor shall apply paint only in temperatures that comply with the manufacturer's specifications.

h. Preliminary Examination: The Contractor shall examine substrates and conditions under which painting will be performed for compliance with requirements and shall not begin application until unsatisfactory conditions have been corrected.

i. Preparation:

i. The Contractor shall remove hardware and hardware accessories, plates, light fixtures, and items in place that are not to be painted, or provide protection such as taping, prior to surface preparation and painting. (Taping includes windows, door jams, etc.)

ii. The Contractor shall clean and prepare surfaces to be painted following the manufacturer's instructions before applying paint or surface treatments. This preparation includes removal of oil, dust, loose rust, mildew, peeling paint or other contamination to ensure good adhesion. In some cases, the Contractor may be requested to remove all existing coats of paint and sealers if prior paint application is showing signs of improper adhesion, such as peeling, chipping, etc. All surfaces must be clean and dry. The Contractor shall schedule cleaning and painting so dust and other contaminants will not fall on wet, newly painted surfaces.

j. Materials Preparation: The Contractor shall mix and prepare paint following the manufacturer's directions.

k. Application: The Contractor shall apply paint following the manufacturer's directions. Use applicators and techniques best suited for substrate and type of material being applied. Do not paint over dirt, rust, scale, grease, moisture, scuffed surfaces, or conditions detrimental to formation of a durable paint film.

i. Unless otherwise specified, the Contractor shall use a high-quality linseed oil paint for all wood included to be painted. The contractor shall have the paint color matched by the supplier and shall provide samples painted on one square foot of board of the same material for approval by the COR.

1. Paint shall be a purified linseed oil product.

a. Linseed oil must be free of solvents.

b. Linseed oil shall contain zinc

c. Contractor shall follow the manufacturers specification/recommendations for application and surface preparation.

ii. Prior to painting, the Contractor shall scrape, sand, fill, and prime the surface. The Contractor shall not apply exterior paint in snow, rain, fog or mist, or when the relative humidity exceeds 85 percent; or to damp or wet surfaces.

iii. All products used for painting shall be compatible with each other.

iv. The number of coats and film thickness required is the same regardless of application method. The Contractor shall not apply succeeding coats until previous coat has cured. The Contractor shall sand between applications where required to produce a smooth, even surface.

v. The Contractor shall apply additional coats when undercoats or other conditions show through final coat, until paint film is of uniform finish, color, and appearance.

l. Scheduling Painting: The Contractor shall apply the first coat to surfaces that have been cleaned, pretreated, or otherwise prepared for painting as soon as practicable, and before subsequent surface deterioration. Allow sufficient time between successive coats to permit proper drying. Do not recoat until paint has dried.

m. Minimum Coating Thickness: The Contractor shall apply materials at the manufacturer's recommended spreading rate. The Contractor shall provide a total dry film thickness of the system as recommended by the manufacturer.

n. Prime Coats: Before application of finish coats, the Contractor shall apply a prime coat as recommended by the manufacturer to material required to be painted or finished, and which has not been prime coated.

o. Brush Application: The Contractor shall brush-out and work brush coats into surfaces in an even film. The Contractor shall eliminate cloudiness, spotting, laps, brush marks, runs, sags, or other surface imperfections. The Contractor shall draw neat glass lines and color breaks.

p. The Contractor shall apply primers and first coats by brush or roller unless manufacturer's instructions permit use of mechanical applicators.

q. Mechanical Applications: Contractor must ensure all areas not painted are protected from overspray. Mechanical application of paint must be back rolled to ensure a consistent finish. Proper personnel protective equipment must be worn while operating mechanical sprayers

r. Upon completion of painting, the Contractor shall clean the glass and paint-spattered surfaces. The Contractor shall remove spattered paint by washing, scraping or other proper methods, using care not to scratch or damage adjacent finished surfaces.

s. The Contractor shall remove temporary protective wrappings after completion of painting operations.

t. Preparation: Observe manufacturer’s recommendations regarding preparation of surfaces to receive paint and application of paint itself. Procedures shall include, but not necessarily be limited to, the following:

i. Cleaning - Clean down and remove oil, grease and loose foreign matter, including mold, mildew, dirt and corrosion products, in a manner which causes neither undue damage to the substrate nor damage to, or contamination of, the surroundings or the paint system to be applied.

ii. Glossy Surfaces - Adequately scuff and/or solvent or chemically etch as appropriate to provide satisfactory adhesion for subsequent paint coats.

iii. Filling - Fill cracks and holes with fillers, sealers, or grouting cements as appropriate for the finishing system and substrate, and sand smooth, to ensure all coats finish smooth.

iv. Drying - Unless otherwise specified, ensure that surfaces are cured and dry before applying additional coats of paint.

v. Generally - Remove weld spatter, slag, burrs, or any other objectionable surface irregularities. Remove any rust and apply rust primer.

vi. Apply an oil-based primer to any bare timber surfaces.

vii. Light sanding between coats.

u. Paint a 36” x 36” test patch of the nominated finished paint color for approval by the COR

v. Primers, sealers, undercoats - Ensure that primers, sealers and undercoats are suitable for the substrate and compatible with the finish coat and each other.

w. Paint Application

i. Apply paint and related material with an undercoat plus two coats of selected finish color paint or with the number of coats specified in accordance with the manufacturer's recommendations. Allow each coat to harden for the drying time (or time between coats) recommended by the manufacturer.

ii. Finish - Ensure each coat of paint is uniform in color, gloss, thickness and texture and free of runs, sags, blisters, or other discontinuities.

iii. Wet Paint Warning - Place notices and do not remove until paint is dry.

x. Final paint will be applied in two coats and according to the manufacturer's instructions.

y. WORK AREA PROTECTION

i. Before painting in any section of the building, use plastic sheeting to protect finishes. Use masking tape wherever necessary to protect finished work or other surfaces liable to damage during painting.

z. TOUCH UP

i. Clean off marks, paint spots and stains throughout including on glass, restoring damaged surfaces to their original condition.

aa. PAINT TYPES AND SPECIFICATIONS

i. Where Standard Specifications describe and define the standards required for specific materials, the materials used in the works shall conform to all applicable requirements of the relevant standard specification.

ii. Use only premium quality lines from approved manufacturers. Use only unadulterated paint except as per manufacturer directions. Do not combine paints from different manufacturers. On clear timber finishes use only combinations of putty, stain and sealer recommended by the manufacturer of the topcoats. Use only the type and quantity of thinners recommended by the paint manufacturer.

iii. Provide finish coats, which are compatible with prime and undercoat paints used. Provide barrier coats over incompatible primers or remove and reprise as required.

iv. Do not apply paints when surrounding temperatures and the paint manufacturer exceeds humidity conditions beyond that recommended.

v. Do not store or mix paint in areas or on surfaces liable to damage.

ab. FILLING

i. All holes, cracks and marks should be repaired with fillers, sealant, putties or grouting cements as appropriate for the finishing system and substrate and treat to achieve the required finish in accordance with industry standards before painting. Tint the filler to match substrate if the finish is transparent.

ii. Walls should be wiped down as necessary before painting.

ac. WORKMANSHIP STANDARDS

i. Care shall be taken to ensure that the base surfaces are properly prepared and that the materials are used correctly. Where other approved Codes of Practice are applicable, the workmanship and procedures described by the relevant Codes shall be regarded as the minimum standard acceptable.

ii. Store and apply paint in accordance with the manufacturer’s directions and the methods nominated in ASTM Paint standards for the painting of buildings and Construction Standard Specification Section 09900 Painting. Use applicators and techniques best suited for the type of material being applied.

iii. "Ridging" at roller overlaps shall not be permitted. Apply finish as heavily as possible without running to provide a uniform finish and color free from brush marks, hairs and other imperfections. Paint surfaces behind mobile equipment and furniture the same as similar exposed surfaces. Paint surfaces behind permanently fixed equipment or furniture. Finish exterior painted doors on tops, bottoms and side edges the same as the exterior face.

iv. Sand lightly between each successive coat as recommended by the paint manufacturer. Apply each coat of material at not less than the manufacturers recommended spreading rate.

ad. REMOVE HARDWARE

i. Remove all hardware, hardware accessories and similar items in place and not to be painted or provide surface applied protection prior to surface preparation and painting operations. After completion reinstall all removed items

ii. Exceptional care must be taken to assure tidiness of work. Suitable temporary covers, masking, drop sheets, drapes and/or barriers shall be provided and maintained effectively where necessary to protect finishes in surrounding areas that are not to be painted. These are to be removed when the protection is no longer required. Provide "Wet Paint" signs as required to protect newly painted surfaces. Carefully remove and reinstate paint splatters from adjacent surfaces.

iii. Upon completion of the work all paint cans, other materials, containers, debris and protective coverings shall be cleaned up and removed from site and the Contractor shall leave the area in a clean, neat, and orderly condition satisfactory to the Contracting Officer Representative.

3. Exterior wood component repairs

a. Cupola:

i. Replace all wood siding on the cupola

ii. Repair the existing louvered vents

1. Replace broken and missing louvers

2. Securely install screening material on the inside of the louver(s)

b. Repair will consist of the removal of sections of damaged or rotted wood judged to be damaged beyond repair and the replacement of the same. Replacement material shall match that which it replaces in species, size, shape, molded profiles and jointing. Wooden members exhibiting rot or damage of less than 50% of the member shall be repaired with a properly formed and shaped dutchmen or splices. Dutchman and splice repairs shall be neatly and accurately fitted with grain matching as nearly as possible that of the remaining wood member. Wooden members exhibiting rot or damage of more than 50% of the member shall be replaced. All Dutchmen, splices and replacement pieces shall be accurately cut and securely attached. Metal and wooden hardware encountered during the course of repairs shall be removed and reinstalled as required. Damaged or broken metal hardware that is not functional shall be identified prior to the start of the work and reported to the CO/COR. All windows and doors shall be fully operable at the completion of the work.

c. Missing or damaged boards or trim that no longer function for the purpose they were intended are to be replaced with wood that matches the existing or similar adjacent material. To the extent possible retain sound material and splice or use dutchmen to replace unsound material.

i. Basis of bid quantities for wood component replacements

1. Board and Batten siding material: 240 Linear Feet of each

2. Rake Boards: 16 Linear Feet

4. Masonry Repairs:

a. The contractor shall have a piece of the existing mortar analyzed for composition and color prior to starting the masonry work.

i. Acceptable samples of mortar shall be identified by the COR

ii. Premixed mortars matching the composition determined in the analysis are acceptable.

iii. Mortar shall be composed of the materials as identified in the analysis. Contractor shall provide the results to the COR for verification.

iv. A fully cured sample of the mortar to be used shall be submitted to the COR for approval prior to installation.

b. Failed or missing mortar joints shall be cut out using hand tools and repointed to match the profile, thickness, and depth of the surrounding mortar joints

c. Preparation for and installation of the mortar shall follow the manufacturers recommendations.

d. Source Limitations: Obtain each type of material for stone repointing from a single source with resources to provide materials of consistent quality in appearance and physical properties.

e. Protection: Prevent mortar from staining the face of surrounding stone and other surfaces.

i. Cover ledges, and other projecting items to protect them from mortar droppings.

ii. Keep the wall area wet below the pointing work to discourage mortar from adhering.

iii. Immediately remove mortar splatters in contact with exposed stone and other surfaces.

f. Stone Repointing: Rake out and repoint joints to the following extent.

i. All open joints

ii. Joints at locations of the following defects:

1. Holes and missing mortar

2. Cracks that can be penetrated 1/4 inch or more by a knife blade 0.027 inch thick.

3. Cracks 1/16 inch or more in width and of any depth.

4. Deterioration to the point that mortar can be easily removed by hand, without tools.

5. Joints filled with an incompatible mortar or substances other than mortar.

iii. Do not rake out and repoint joints where not required.

g. Notify the COR of unforeseen detrimental conditions including voids in mortar joints, cracks, loose stone(s), rotted wood, rusted metal and other deteriorated items.

h. Basis of Bid quantity for mortar repair: 500 linear feet

5. Roofing and Gutters

a. Remove and dispose of the existing roofing material and any underlayment(s) down to the decking and shingle lath.

b. Submit samples of asphalt shingles and accessory items for approval as to quality and grade

c. Except as otherwise noted, shown, or specified herein, application procedures shall conform to the manufacturer’s installation procedures. After demolition/removal of the existing shingle roofing, review the roofing substrate with the COR prior to starting the new roof installation.

d. After repairs are completed to the roof structure, deck and shingle lath, begin the installation of the asphalt shingle roof by installing waterproof membranes and other accessories as specified, shown or required.

i. Lay self-adhering, self-sealing sheet membrane in valleys and for lower six feet of the roofing surface on each side. Use minimum number of sheets to form valleys, lap joints shingle style.

ii. Lay felt paper to cover the remaining surfaces of the roof that are not covered by the self-sealing sheet membrane.

iii. Install metal flashing and drip-edge except for flashing intended to be laid up with the shingle installation.

e. The roofing subcontractor shall provide tarps as required to protect the building and its contents from damage by water intrusion during inclement weather. Do not open up more roof area than can be covered by the tarps available on site. At the end of each day areas where demolition of the existing roofing has occurred shall be re-roofed or covered to prevent the intrusion of water. Tarps shall be tied down and secured to prevent displacement by the wind.

f. Materials:

i. Shingles:

1. In kind to the existing shingles to include color

a. Existing shingles are 3-tab asphalt shingles

2. Minimum of 30 year warranty

ii. Nails:

1. As required by the shingle manufacturer

iii. Self-Adhering Sheet Membrane Roof Underlayment:

1. Cold applied, self-adhering, self-sealing sheet membrane, 40 mil minimum, ASTM D412, ASTM D461, ASTM D903, ASTM D1970.

g. Flashing and Sheet Metal:

i. Provide all labor, equipment and materials required for the fabrication and installation of metal flashings and roof accessories as indicated, specified or required including all incidental items normally required for the installation and conditions encountered.

ii. No metal flashing or any portion thereof shall be covered with any material until the COR has inspected the installation. If any material is covered before such inspection it shall be uncovered, and if damaged replaced at the contractor’s sole expense. Provide 72-hour notice prior to the work for the COR to schedule his inspection.

iii. The following types of failure will be adjudged defective work and shall be corrected immediately. Once corrective measures have begun, they shall continue to a satisfactory conclusion regardless of the guarantee period.

1. Leaking, failure to stay in place.

2. Undue expansion; uplift; deformation; loosening; and splitting seams.

h. Gutters and Downspouts

i. Furnish all labor, equipment, and materials required to accomplish the removal and installation of new gutters and rain leaders. The new gutter system(s) shall follow the layout of the existing gutter system. Where the existing gutter system or parts of the system are missing confirm layout with COR. New gutters shall be attached as indicated, specified or required to derive full benefit and use of the gutter system.

ii. The existing gutter layout shall be retained including joint patterns and function. The new gutters shall match those which they replace in form, function, shape and gauge or weight. Where the gutter system or parts of the system are missing with no examples of available confirm gutter type/style with the COR. Where exact matches of gutter shapes or sizes are unavailable the contractor shall review alternatives with the COR. Assume 6” half round gutters and 4” dia. rain leaders for bidding purposes.

iii. Materials:

1. Gutter: Match existing size, half round single bead. Provide preformed mitered corners where required. Material shall be16oz terne coated copper.

2. Sealant: Nitrile rubber-based aluminum fortified adhesive formula.

3. Supports: Cast brass, half round gutter hangers with spring clips, designed for roof deck attachment, adjustable for gutter height.

4. Down pipes: Match existing diameter, smooth round. Provide preformed elbows and bends, wire strainer and drive, key and rack attachment. Material shall be terne coated copper.

iv. Where gutter sections must be replaced in full, match original lengths of the replaced sections of guttering, sections less than 10’-0” in length shall be replaced as a single section with no joints. Ends of each length shall be joined by 1” lapped, riveted and sealed joints. Provide preformed end caps and down pipe flanges.

v. At joints place rivets 2” o.c. Provide expansion joints as required by conditions, maximum run without expansion joint 25’-0”. Install end caps and preformed down pipe flanges as required. Support gutters with half round gutter hangers with spring clips at 3’-0” o.c. maximum spacing nailed or screwed to rook deck. Slope gutter to down pipe 1/16” per 12” of run.

vi. Provide 45° elbow at down pipe terminus. Provide 45° elbows at cornice as required to fit cornice profile. Attach down pipes to masonry with drive, key and rack system intended for the conditions encountered spaced at 10’-0” o.c. Minimum of 2 attachments per down pipe required.

6. Exterior openings

a. For all window openings the contractor shall install ½ inch exterior grade plywood over the window opening.

i. Plywood shall be installed using torx head wood screws.

ii. Plywood shall be securely fastened to the window frame.

iii. Windows with plywood already installed shall have the existing plywood removed and replaced with new material.

iv. Plywood shall be painted to match the window frame

b. All doors shall have the window panel removed.

i. Contractor shall securely store the window panels in the barn.

1. Panels shall be stored on blocking on the upper level

2. Contractor shall label and install identification tags for all panels removed.

a. Identification tags shall include the location and orientation of the window panel

ii. Contractor shall install ½ inch exterior grade plywood in the openings after the window panels have been removed.

1. Plywood shall be installed using torx head wood screws.

2. Plywood shall be securely fastened to the window frame.

3. Windows with plywood already installed shall have the existing plywood removed and replaced with new material.

4. Plywood shall be painted to match the window frame

c. Contractor shall perform the following tasks on the main barn doors

i. Supply and install the bottom rail on the right side main barn door.

1. Bottom rail shall be in kind to the bottom rail on the left side door.

ii. Replace four broken boards of the panel section of the door

iii. Supply and install the lock stile board on the right side door

1. Contractor shall also supply and install a heavy duty door hasp compatible with the use of a pad lock.

Quality Assurance

1. The quality of all work shall be the responsibility of the prime contractor. Inspect and test all work often enough, including all subcontractors’ work, to ensure that the quality of materials, workmanship, construction, finish, and functional performance is in compliance with applicable specifications, requirements and drawings.

2. The project superintendent or project manager shall inspect the project, ensuring all work is complete, prior to scheduling inspections.

3. All work shall be by qualified workers skilled in their trade. Substandard, defective and/or inferior work shall be corrected or replaced at the Contractor’s sole expense.

4. The contractor shall submit, with their bid, the following documentation outlining their qualifications for the work.

a. Company qualifications:

i. Examples of 3 projects of similar scope and complexity to this Scope of work, completed in the last 5 years. The projects shall exhibit the ability of the company to successfully complete work on historic structures where the work must meet the “Secretary of the Interior’s Standards for the Treatment of Historic Properties”. Project descriptions must be no more than one-page, single space, written in 11pt. type. Along with the project description submit no more than 4 photographs illustrating the work. At least one photo should show the before conditions of the project to illustrate the extent of the work.

b. All work shall be by qualified workers skilled in their trade. All work shall be done in a workman like manner. Substandard, defective, and inferior work shall be corrected or replaced at the contractor’s sole expense. Contractor shall provide documentation for each subcontractor that will be used to show the following:

i. The Contractor shall assign a qualified job superintendent to the work. The supervisor shall have control of the job site, be responsible for the work and be present whenever work is ongoing either by the Contractor’s own personnel or his subcontractors.

ii. Minimum worker/subcontractor qualifications required:

1. Job Superintendent:

a. Minimum of 5 years of experience in construction field; at least 2 years of managing construction work crews. Must have worked on at least three projects involving historic buildings, provide a list of projects.

2. Carpenter:

a. Lead Carpenter: Minimum of 5 years as a finish carpenter

b. Carpenter: Minimum of 2 years as a finish carpenter.

c. Must have experience with work tasks included in the scope of work

3. Painting:

a. Job foreman must have a minimum of 3 years’ experience as a crew leader.

b. Painter: minimum of 2 years of experience as a painter.

4. Roofing:

a. Job foreman must have a minimum of 3 years of experience as a crew leader.

b. Roofers: minimum 2 years of experience as a roofer.

5. Project Documentation:

a. The contractor shall take a set of pictures prior to the start of the work. These photographs shall show each elevation of the structure as well any details needed to document the extent of the work. After each phase of the work and project completion the contractor shall take an additional set of photographs showing, from the same vantage point, each view recorded in the previous set of photographs along with any additional photographs that may be required to fully illustrate the work. The contractor shall submit the photographs of each stage of work with captions/labels stating the stage of the work, a description of the object being viewed, and the geographical orientation from which the photograph was taken. The initial submittal shall be provided to the COR on a compact disk and shall be updated with subsequent submissions. The final submission of photographs shall include a digital copy on CD or other approved storage device of all photographs with captions and descriptions submitted as part of the earlier submissions of the stages of the work.

6. Guarantee:

a. Contractor’s Guarantee: The contractor shall guarantee his work and that of his sub-contractors for one year (365 calendar days) from the date of final acceptance by the owner. The contractor shall be responsible for all corrections and repairs to his work determined to be defective during this period. Such time may be calculated from the date of final acceptance of the work under contract on separate buildings or distinct areas or types of work of the project should the owner agree that partial acceptance of the work is in the best interest of the Government. Once corrective measures begin under the contractor’s guarantee, they shall continue to a satisfactory conclusion regardless of the guarantee period. Temporary or short-term repairs shall not relieve the contractor of his responsibility under the guarantee. After repairs the guarantee shall not be satisfied until the repair has performed satisfactorily until the expiration of the guarantee, but in any case, not less than 6 months. The contractor’s guarantee covers workmanship and failure of the work to perform in such a manner that that the owner is unable to derive full benefit from the work and includes aesthetics and appearance as well as physical failures. The contractor’s guarantee is in addition to the warranties and guarantees that the various manufacturers and suppliers of materials, products or equipment used in the work may supply with their materials, products or equipment. The contractor is not responsible for damage caused by the owner except where such damage is a result of the contractor’s or their subcontractor’s defective work.

Delivery

1. The contractor shall develop and submit a Quality Control Plan (QCP) that implements procedures to identify, prevent, and ensure non-recurrence of defective services. The contractor’s quality control program is the means by which they assure themselves that their work complies with the requirements of the contract. The QCP shall be submitted to the COR for approval. After acceptance of the QCP, the contractor shall receive the contracting Officer’s acceptance in writing of any proposed changes to their QC system. A revised copy of the QCP shall be submitted to the Cor within five (5) working days when changes are made thereafter.

2. Daily reports, signed by the contractor, shall be consolidated and submitted to the COR weekly. Project management submittals will be submitted and approved as indicated. Product submittals will be approved in advance of procurement and installation.

3. The contractor shall develop and submit a Safety Plan for the project.

a. The safety plan shall include a plan that outlines the work, cleanup methods, signs and warning barricades, waste methods, personnel protective equipment, emergency and accident procedures, and COVID-19 safety procedures.

Government-Furnished Property

1. Services

a. An NPS archeologist will prepare test pits prior to any disturbance of soils or monitor any digging and excavations while occurring at no cost to the contractor. The contractor is responsible for notifying the COR, at least, 5 business days in advance of any ground disturbance to schedule the archeologist.

b. The Government shall supply no other service to the contractor.

2. Facilities

a. The government will provide no facilities to the Contractor. A staging area will be designated for the contractors use.

3. Utilities

a. The Government will provide no utilities for use by the contractor.

4. Equipment

a. The Government will provide no equipment to the contractor.

Place of Performance

1. All work shall be performed at the Waggonseller Barn.

a. Waggonseller Barn location: 2720 Audubon Rd, Eagleville, PA 19403 Period of Performance

1. A non-mandatory pre-bid site meeting will be schedule by the Contracting Officer. It is STRONGLY encouraged that each bidder visits the site and fully acquaints themselves with the problems and conditions they will encounter if they become the successful bidder. Since absence from visiting the project will not be considered as an excuse for misunderstanding of the requirements of the contract, bidders are strongly encouraged to visit the park and attend the pre-bid site visit(s).

2. The period of performance shall be 60 days from the notice to proceed for all work of this project.

3. Recognized Holidays:

a. The contractor is not authorized to work at the site on Federal Holidays or weekends unless specifically authorized in writing by the NPS Contracting Officer. Requests to work over a holiday or weekend must be received no less than 5 working days prior to the holiday.

4. Hours of Operation:

a. The contractor is responsible for conducting business at the site between the hours of 7:00 a.m. and 3:30 p.m. Monday through Friday, except Federal holidays or when the government facility is closed due to local or national emergencies, administrative closings, or similar government directed facility closings. Work outside of these hours will not routinely be approved and must be requested with the Park and COR no less than three (3) days prior.

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