Eagle Creek Overlook Windows Statement of Work - RS.docx

US Department of Agriculture (USDA)

Statement of Work for Eagle Creek Overlook Window Restoration

Contents

Eagle Creek Window Restoration

1.0 Purpose

Repair windows at historic Eagle Creek Overlook comfort building.

2.0 Objective

Restore windows including glass, sills, sash components, muntins, casings, aprons and stiles. Tasks include removal, sanding, painting, shellac and polyurethane as needed, lead remediation, pane replacement, parts refabrication or replacement, and window movement mechanism repair or replacement.

3.0 Period and Place of Performance

The work will take place after Oct 5, 2023 and completed with 90 calendar days. Dates before this are occupied by renters. Work will take place on site and off site as needed. Contractor to provide progress schedule detailing all phases of work to complete restoration of the overlook windows.

4.0 Background

The Overlook Shelter, built in 1938 by the Civilian Conservation Corps, is in the Columbia Gorge and sits atop a flat knoll above the Columbia River overlooking the Bonneville Dam. The shelter is a large community fireside and rest room building done in the Rustic Cascadian style found throughout the Pacific Northwest. The main portion of the building is the large fireside room, across which runs a large porch which projects out on both sides. On the south side of the building is a square wing which houses the bathrooms. The porch, which overlooks the river, has a flagstone floor and is covered by a cedar shingled roof, supported by large stone pillars. Decorative carved log trusses support the roof. The fireside room has a large double door flanked by a pair of windows, and two more large windows on either side of the room. Carved trusses similar to the porch trusses support the roof. Directly through the doorway on the south wall is a large fireplace made of coursed squared stone, with built in seats on either side. On the south side of the building is the bathroom wing, also covered with a cedar shingled roof. The exterior walls are stone up to the window level, followed by board and batten siding.

The location of the Overlook building receives 80 inches of rain annually, is exposed to high east and west winds and is in the shade most of the day. Due to this, wood is prone to decay and paint is prone to peeling.

5.0 Contractor General and Technical Requirements

1) GENERAL REQUIREMENTS

a) Work of this Section, as shown or specified, shall be in accordance with the requirements of the Contract Documents.

2) DESCRIPTION OF WORK

a) General: Provide all labor, materials, equipment, and services required to complete wood window restoration as specified herein and required by existing conditions and authorities having jurisdiction.

b) Wood window restoration may include, but is not limited to, the following:

i) Restore damaged and inoperable wood window mechanisms while maintaining current profiles.

ii) Restore existing and provide new window balance hardware at all operable sashes to accommodate use.

c) Replace all broken and unsound window movement mechanisms. These are of unknown type.

d) Restore existing window hardware and provide new in-kind window hardware where existing hardware is missing or is too damaged or deteriorated to be restorable.

e) Restore all window trim disturbed for work of this Section to sound condition and existing appearance.

f) Paint and finish exterior of all wood elements as necessary to match original finishes.

g) Replace cracked, broken or missing glass.

h) Remove all deteriorated putty and replace with new.

i) Consolidate and repair deteriorated wood sills, framing members and stiles.

j) Replace all broken or deteriorated parting strips.

k) Reinstall repaired window mechanisms.

l) Clean all glass.

m) Intent: It is the specific intent of this Section that repairs will maximize the retention of historic fabric while making the windows weather-resistant for long-term use and serviceable for cyclical maintenance.

3) QUALITY ASSURANCE

a) Craftspeople: Wood window restoration shall be carried out by skilled craftspeople who are thoroughly experienced with materials and methods specified.

b) Laws, Codes, and Regulations: All work of this Section shall comply with all applicable federal, state, and local laws, codes, and regulations.

c) Knowledge of Site: Bidders shall visit site prior to bid and carefully examine Project scope and conditions that may affect proper execution of work of this Section and determine or verify dimensions and quantities. Submission of bid shall be acknowledgment that contractor is thoroughly familiar with Project scope and site conditions.

d) Access for Inspection, Documentation and Approvals: Provide contracting officer access on a regular basis to all locations on which mockups are being carried out, on which work is ongoing, and where work has been completed to allow for inspections, documentation, and approvals. Provide means of access and safety precautions required to facilitate inspections and approvals.

4) SUBMITTALS

a) General: Submit the following in compliance with the requirements of the Conditions of the Contract. Revise and resubmit each item as required to obtain contracting officer’s approval.

b) Wood Window Treatment Plan: Provide a plan showing how each window will be restored and all materials necessary. Include product literature as detailed below.

c) Product Literature: Manufacturer’s published technical data for each product to be used in work of this Section including recommendations for application and use, test reports and certificates verifying that product complies with specified requirements, and Material Safety Data Sheets (MSDS). For all exterior and interior paint or shellac/stains Contractor to provide product data and paint samples as necessary for Government approval.

d) Wood Treatment Data: Follow chemical treatment manufacturer’s instructions for handling, storage, installation, and finishing treated materials if applicable.

e) Lead testing report and abatement plan if lead is discovered.

5) CONTRACTOR RESPONSIBILITY

a) Bidders shall visit the site beforehand to make themselves familiar with specific conditions relating to this Section.

b) Comply with relevant standards for all materials.

c) All Subcontractors are bound by the same requirements as the Contractor. Subcontractors shall not begin work unless approved by the contracting officer.

d) Contractor is responsible for removal and disposal of all waste and excess materials generated under this contract. Use of site dumpsters is not permitted. All waste to be disposed of in accordance with all applicable regulations.

6) DELIVERY, STORAGE, AND HANDLING

a) Deliver, store, and handle all products and materials to prevent damage, deterioration, or degradation and intrusion of foreign material.

b) Discard and remove from site deteriorated or contaminated materials and products that have exceeded their expiration dates. Replace with fresh materials.

7) PROJECT CONDITIONS

a) Protection of Persons: Take all necessary precautions to protect all persons, whether engaged in work of this Section or not, from all hazards of any kind associated with the work of this Section.

b) Protection of Window Opening: After removal, all window openings shall be closed by non-destructive anchoring system and shall be adequately weathertight to not permit any moisture from entering the building.

c) Protection of Building: Protect building elements and finishes from damage or deterioration caused by work of this Section. Repair any damage to materials or finishes to contracting officer’s satisfaction at no additional cost.

i) Take all necessary precautions to prevent fire and spread of fire.

ii) Take all necessary precautions to protect building elements and finishes from damage by precipitation during work of this Section. Protect building openings at all times. Repair or replace to Contracting officer’s satisfaction all building elements and materials damaged by weather resulting from window openings that did not sufficiently exclude weather at no additional cost.

d) Coordination: Coordinate work of this Section with work specified in other sections to ensure proper completion of the Work.

8) ENVIRONMENTAL CONDITIONS

General: Perform work only when temperature of products being used, temperatures of existing and new materials, and air temperature and humidity comply with product manufacturer’s requirements and requirements of this Section. In case of conflict, the most stringent requirements shall govern.

9) LEAD-CONTAINING PAINT (LCP)

a) Previous investigations of this building have determined that lead-based products are present.

b) General: Perform all work that disturbs lead-containing paint (LCP), handle all material that involves lead-containing paint, and transport and dispose of all lead-containing paint and residue in compliance with all applicable federal, state, and local laws and regulations for identification, removal, labeling, handling, containerization, transportation, and disposal of lead-containing material including, but not limited to, those referenced herein.

c) U.S. Department of Labor OSHA Regulations: Including but not limited to: Title 29, Code of Federal Regulations (CFR) Section 1926.62: “Lead Exposure in Construction” and Title 29, CFR Section 1910.1200: “Hazard Communication Standard.”

d) U.S. Environmental Protection Agency (USEPA) Regulations: Including but not limited to: Title 40 CFR Part 262: “Standards Applicable to Generators of Hazardous Waste” and Part 263: “Standards Applicable to Transporters of Hazardous Waste.”

e) U.S. Department of Transportation (USDOT) Regulations: Including but not limited to: 49 CFR Parts 172, 173, 174, 175, 177, 178, 179, and 180.

10) MATERIALS, GENERAL

a) Grade and Quality: Materials shall conform to requirements of this Section and shall be new, free from defects, and of recent manufacture.

b) Manufacturer’s Instructions: Comply with material manufacturers’ instructions for use of products (including surface preparation, mixing, applying, drying, etc.). In case of conflict with requirements of this Section, the more stringent requirements shall govern.

11) WOOD

a) Lumber shall be of sound stock, solid wood without finger joints or other joints within members, thoroughly seasoned, and kiln-dried to a moisture content not exceeding 8 percent.

b) Wood shall be free from defects or blemishes on surfaces exposed to view that will show after paints and finishes have been applied. Materials that do not comply with specifications for quality and grade, are in any way defective, or are otherwise not in proper condition will be rejected.

c) Wood for new elements, and repairs of existing elements shall match profile and grade of existing windows in species, quality, cut, and grain pattern in kind.

d) Preservative treatment shall be used for new wood after machining.

12) FASTENERS FOR CONSTRUCTION OF WOOD SASH

a) General: All fasteners for construction of new sash shall be stainless steel or nonferrous metal of appropriate size and configuration for use intended and approved by Contracting officer.

13) HARDWARE AND ACCESSORIES

a) General: Provide each restored window with full complement of hardware and fasteners matching that on original windows. Use salvaged, restored existing hardware insofar as possible and new hardware to match existing hardware where hardware is missing or existing hardware is damaged or deteriorated to be unrestorable.

b) Restored Existing Hardware: Restore all existing hardware to be reused following requirements of the section “Restoration of Existing Historic Hardware” below.

c) New Hardware: Provide new hardware and fasteners to match existing hardware, mechanisms and fasteners in all respects. Sash lift mechanism is unknown until windows are removed.

14) PAINTING AND FINISHING MATERIALS

a) General: Paint shall be of premium quality and match existing color exactly unless otherwise specified and shall comply with requirements of contract document. Primer shall be either oil-based or 100% acrylic and finish paint shall be 100% acrylic. Only exterior surfaces shall be painted.

b) Interior finish of the windows shall be shellac with a polyurethane finish.

15) HARDWARE RESTORATION MATERIALS

a) Hardware restoration materials including cleaners, solvents, putties, lacquers and epoxies are at the discretion of the Contractor but shall be approved by the Contracting Officer.

16) FABRICATION OF NEW SASH

a) Coordinate dimensions with actual measurements of window openings and adjacent construction to match in kind.

b) Fabricate components to match originals in kind.

c) Join moldings to match construction of original sash exactly.

d) Machine sash elements to receive glazing panels. Machine sash elements of movable sash to receive weatherstripping, if appropriate, and hardware.

17) SAFETY

a) Protection: Protect people, adjoining building surfaces, collections and landscape elements, et al from injury resulting from window restoration work. Use drop cloths or other coverings as necessary to protect interior finishes, floor and collections and exterior landscape material from dust and debris, etc.

18) INSPECTION AND DOCUMENTATION

a) Examine the areas and conditions where window restoration is to be executed. Take all necessary field measurements. Notify the Contracting officer of conditions detrimental to the proper and timely completion of Work. Do not proceed until unsatisfactory conditions are corrected.

b) Documentation: Documentation in the form of high-resolution (1 megabyte minimum) JPEG images on CDROM showing the existing condition of all elements of windows to be removed for work of this Section, all elements adjacent to elements that are to be removed, and all other window elements that will be in any way affected by work of this Section. Show overall trim and details of all damage or deterioration that might be attributed to damage resulting from work of this Section.

19) REMOVALS

a) General: Remove all window components that require removal for restoration or for proper installation.

b) To minimize breakage, paint lines at the edges of window stops and parting strips must be cut/scribed first with a sharp knife before moldings are removed.

c) All nails will be removed by pulling them through the back of the moldings only.

d) Identify and label each component that is to be removed and repaired for reinstallation with window opening designator and location in jamb. Record numbers and locations of components.

e) Remove adjacent elements as required to modify or replace elements of window jambs, heads, and sills that must be altered to accommodate new window sash. Use all care necessary to prevent damage or deterioration of elements removed and elements remaining in place. Restore or replace all elements damaged during work of this Section to Contracting officer’s satisfaction at no additional cost.

f) Store removed elements in a secure location safe from theft, damage, and deterioration.

g) Protect window openings to prevent water entry or human intrusion.

h) Glass Removal: All glass will be removed to accommodate sash restoration.

i) Label each pane of glass with location and orientation within the sash so that the historic glass can be returned to its original location and orientation. Use painters’ tape to label glass and consistently label on either interior or exterior to avoid confusion at reinstallation.

j) Remove all face glazing compound from each window sash using steam, infrared heat, or other approved method.

k) Paint Removal: All paint and finishes will be removed from wood components as needed in order to insure successful adhesion of new paint.

i) All paint removal shall be executed in compliance with all applicable federal, state, and local regulations.

ii) Steam or heat shall be used to carefully remove the paint while limiting the damage to the wood substrate.

l) Hardware Removal: All hardware will be removed as needed in order to restore sash and hardware.

i) Scribe paint around hardware so that removal of hardware does not splinter adjacent wood.

ii) Remove paint from hardware so that any screws may be loosened.

iii) Tag and retain all hardware and screws.

iv) Allow Contracting officer to review all hardware so that a determination may be made as to whether hardware will be reinstalled.

20) DUTCHMAN REPAIRS

a) General: Provide dutchman repairs where wood is structurally compromised. Wood repairs will not be made for aesthetic purposes. Dutchman repairs shall provide continuous smooth surfaces matching planes and profiles of wood members being repaired. Dutchman shall match wood being repaired in specie and cut. In wood for clear finish, grain pattern of dutchman shall match grain pattern of wood into which it is inserted.

b) Preparation: Neatly cut out existing opening as required to provide a prismatic void. Wherever possible create voids that will provide mechanical attachments as in dovetails. The amount of wood removed should be minimized but the amount should include all damaged wood and extend just past damaged wood to prevent spread of any fungus contained therein. Cut away area will provide ample glue surface.

c) Dutchman: Cut dutchman to exactly fit void, with exposed portion matching original profile of woodwork and just slightly proud of original surface. Orient grain of dutchman parallel to grain of element being patched. Where deterioration or loss at end of component requires dutchman repair, use a diagonal scarf joint for end-to-end joint between dutchman and remaining portion of component.

d) Installation: Clean glue surfaces with acetone or denatured alcohol. Insert dutchman using specified adhesive and clamp in place until glue is set. Where clamping is not feasible, use small brads; remove brads and fill holes after adhesive has set.

e) Surfacing: Plane or scrape dutchman to provide smooth continuous surface coplanar with adjacent wood. Do not damage or alter profile or finish of adjacent wood.

21) COMPONENT REPLACEMENT

a) General: Fabricate new components for any components which are deteriorated in entirety and cannot be repaired with Dutchmen and epoxy.

b) In kind replacement: Except as specifically indicated otherwise, provide replacement elements of same specie with configurations, profiles, dimensions, and joinery et al exactly matching those of existing elements.

i) Profiles: Remove coatings from profiles of existing elements before recording profiles to produce molding cutters to match existing profiles.

ii) Molding Cutters: Cut custom blades as required to match original profiles and label knifes with project code.

c) Machining and Surfacing: Machine and surface all new and replacement wood elements to provide smooth even surfaces without saw marks or plane marks. Wood with surface irregularities, including but not limited to scratches, saw marks, and plane knife marks, visible after finish has been applied will be rejected and shall be replaced with properly finished wood elements at no additional cost.

22) SASH INSTALLATION

a) General: Install new and restored sash as per contract. At completion of installation, windows shall be complete with all components and with unblemished paint and finish coats. All operating sash shall operate smoothly over entire height, and weatherstripping, if specified, shall provide weatherproof seal.

b) Sash Mechanisms: Install movable sash with sash mechanisms properly adjusted to allow sash to close securely, open completely to top of track, and remain stationary at any position in track.

c) Sash Hardware: Install any hardware, including sash lifts and sash locks, on restored sash in the same locations as originally. Adjust sash locks for smooth easy operation and firm, secure locking.

d) Wax: Treat unpainted sides of stiles and frame with wax for ease of window operation and wood protection.

e) Weatherstripping: If specified, install weatherstripping following manufacturer’s requirements to ensure smooth operation and weathertight closure.

23) ADJUSTING

a) General: Adjust operating sash and hardware to provide a tight fit at contact points and weatherstripping, if specified, and to provide smooth operation and a weathertight closure. Lubricate hardware and moving parts.

24) GLAZING

a) General: Re-glaze all window lights using approved pure linseed oil or soybean oil glazing putty. Glazing points shall be used to set glass.

b) Clean glass prior to glazing with non-ammoniated formula before reinstallation.

25) CLEANING

a) Clean interior and exterior surfaces promptly after installation. Take care to avoid damage to historic and protective coatings and finishes.

b) Use only cleaners which do not contain ammonia. Windex, 409 and like products are not acceptable as they accelerate paint film deterioration.

26) PAINTING

a) General: Paint and finish new and restored elements of frames and trim to match original Prime and paint sash in controlled environment according to manufacturer’s instructions.

b) The sides of the stiles (unpainted edges) of double hung windows do not need to be sanded unless special conditions require it.

c) After substrate is sanded, vacuum all surfaces, and remove remaining dust with barely damp dust-free cloth. Allow surfaces to dry completely before priming.

d) Apply water repellant wood preservative to all surfaces of the sash.

e) Apply one coat of alkyd or 100% acrylic primer to all surfaces of the sash including putty beds (shellac based paint cannot be applied over glazing). On all window sash, extend primer and paint 1/16” onto glass to seal glazing. If sash is operable, it is important to paint bottom edge to prevent water intrusion.

f) Lightly sand surfaces after the primer has dried and clean of all dust.

g) Apply two topcoats of premium quality 100% acrylic paint to all surfaces. Color to match existing exactly unless otherwise specified.

h) Immediately after installation touch-up any disturbed areas of paint.

27) RESTORATION OF EXISTING HARDWARE

a) General: Remove historic sash hardware from existing sash to be replaced and remove sash pulleys from jambs. Store hardware in plastic bags or containers identified with sash number to ensure that each unit of hardware is reinstalled in its original location.

b) Remove lacquer coatings with acetone or lacquer thinner.

c) Strip paint coatings by dipping in chemical paint stripper.

d) After removal of paint and other coatings, thoroughly rinse in appropriate solvent and wipe dry with soft cloths.

e) Replacement Parts: Provide replacement parts, including operating parts and fasteners, matching original parts in metal and alloy, configuration, size, and finish for all missing and damaged parts.

f) Remove scratches and buff surfaces using like metal cleaning and polishing pads and polishing compound as necessary. Do not scratch finish with abrasive pads or wire brushes.

g) Provide lacquer finish on all copper alloy elements.

i) Preparation

(1) Clean and degrease metal using solvent and burnishing with handheld bronze wool to provide surface free of dirt, dust, grease, oil, and other contaminants. Do not damage metal finish. If a surface is handled or contaminated, repeat cleaning and degreasing process.

(2) Drying: Ensure that metal surface is completely dry.

(3) Environment: Ensure that environment is dust-free before applying lacquer.

ii) Lacquer Application: Build up coatings to produce 2-mil dry film thickness. Spray lacquer using “hot spray,” “airless spray,” or “electrostatic spray” methods.

(1) Curing: Cure lacquer coatings by “baking” in shop at elevated temperatures following manufacturer’s recommendations.

(2) Waxing: Protect baked lacquer coatings by hand application of two coats of hard paste wax.

h) Lubricate operating parts.

i) Store units in protective packaging.

j) Provide all missing fasteners for hardware. Fasteners must match all visual aspects of existing fasteners.

28) PROTECTION

a) Protect windows from damage or deterioration until time of substantial completion.

Figure 1: View of Eagle Creek Overlook Comfort Building looking at east side (North to the right)

Appendix A

Table 1: List of Windows

Figure 2: Window Layout

Example Images of Doors / Windows

Figure 3: Doors C and D

Figure 4: Window B (partial view) Appendix B - Maps

Directions from Portland, OR (I-84 eastbound)

Eastbound on Interstate 84, take Eagle Creek Recreation Area exit #41. At the end of the offramp (facing the hatchery), turn left and stay left following the creek and the sign to the Eagle Creek Overlook. You will pass under the freeway and railroad tracks. Overlook building is beyond the wooden gate up the hill about 1/10 mile.

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