A04 SOW HOFU Waterwheel.docx

Emergency Project to Repair the Hopewell Furnace Water Wheel Hopewell Furnace National Historic Site Elverson, Pennsylvania

1.0 Site Location

Site Location

2.0 Background

A. The existing water wheel, 22 feet in diameter with 10 spokes and 60 buckets, is a reconstruction installed in 2006. This is the fourth replication of the furnace’s last working water wheel of 1879. Three previous wheels were constructed and installed by the NPS in 1952, 1978, and 1988. The rim segments, spokes, and associated wedges were made of #1 white oak, and the tongue- and- groove soling boards and buckets are barrel- grade cypress. The existing white- oak, decagonal hub was salvaged from the existing (1988) wheel and restored by soaking in linseed oil and turpentine. Some hardware items may have been reused from the 1879 wheel, although all provenance has been lost during the multiple wheel reconstructions. Nuts and bolts with square heads were specially made for this project. Lead bars attached to some of the buckets with stainless- steel screws and washers are used for balance. Dedication of the water wheel took place on August 5, 2006. The water wheel operates seasonally, adding a dynamic component to the visitor experience.

B. Park staff had noticed the backing plates were beginning to fall off in 2018 and made repairs to secure the backing plates. The repairs were short lived and additional backing plates came loose prompting further inspection. Upon further inspection, it was noticed that multiple of the buckets were falling off and the water wheel was out of balance.

C. Other items found to be deficient on the water wheel include: deterioration of the lining, buckets, 2 sections of the interior rim, bolts throughout (it was previously recommended to use untreated fasteners to stay as close to historic materials as available. Due to the acidity of the water they have prematurely deteriorated), and one section of the wheel, where it is believed to rest in the water during non-operation.

3.0 Scope of Work

A. The work includes, but not limited to:

a. The contractor shall perform fieldwork and verify all dimensions to meet the needs of this contract.

b. Contractor shall perform all construction and construction related activities to meet the requirements of this contract.

c. This contract requires the independent Contractor, functioning not as an agent of the Government, to provide all personnel, facilities, tools, labor, equipment, supervision, transportation (except as otherwise specified in the Contract), correspondence, supplies, staging and materials necessary to complete the work.

d. All “in-kind” replacement material shall be material that closely matches the existing materials, through comparison of architectural qualities and salient characteristics such as species, cut, color, grain, dimension, profile, detail, thickness and finish.

e. The contractor shall replace 100% of the lining (soil) boards.

i. All materials used shall be in-kind to that which they replace.

f. The contractor shall replace all 60 buckets.

i. All materials used shall be in-kind to that which they replace.

g. The contractor shall replace the two compromised sections of the interior rim.

i. All materials used shall be in-kind to that which they replace.

h. The contractor shall replace the bolts holding the rim plies together.

i. New bolts shall be stainless steel and shall be finished to resemble the existing fasteners.

i. The contractor shall clean the tail race so that the water flows properly and does not sit in the wheelhouse.

i. Work within the tail race shall be accomplished using low pressure, high volume water to protect the clay base.

1. A vacuum truck shall be set up at the catch basin to collect the water and any debris

2. Silt socks shall be placed to prevent any silt or debris from passing the location of the vacuum

ii. If, upon further evaluation of the underground portion of the tail race, additional build up of silt and sediment is found beyond the catch basin, the contractor shall take pictures of the findings and notify the CO and COR of additional work required.

j. After removal of the buckets and lining, the contractor shall clean the rims, spokes and hub and apply a pine tar and linseed oil treatment.

i. All finishes and treatments are to be approved by the COR and must not contain any toxic or harmful chemicals and materials.

k. The contractor shall use materials sized to match the existing installation and of the same species and grade of lumber.

l. All fasteners shall be approved by the Contracting Officer Representative prior to installation.

m. Lumber shall be treated by heating and mixing organic linseed oil and pine tar then applying to the material

n. The contractor shall replace rotting and deteriorated components of the head race wood flume.

i. Inspect the entire head race wood flume and associated components. Perform minor repairs by patching and filling holes, filling splits, re-securing loose sections or pieces and finish any new materials to match the existing. Replace deteriorated, damaged or rotten sections of the flume with new wood matching the existing wood in species, size, shape and molding profile. Construction shall match the existing in terms of built up sections/assemblies or pieces, no glued up sections or pieces will be allowed as replacements for solid wood sections or pieces.

ii. Basis of bid replacement quantity (See Appendix A for component identification):

1. Component A – 20 linear feet

2. Component B – 4 each

3. Component C – 4 each

4. Component D – 4 each

5. Component E – 20 linear feet

o. The contractor shall rebuild the valve that controls the water to the head race.

i. The contractor shall ensure that the valve operates as intended. Upon completion the valve shall be able to fully open and close. If the valve is found to be beyond repair, it shall be replaced after receiving approval from the Contracting Officer (CO) and Contracting Officer Representative (COR). Contractor shall supply pictures and a description of the deficiency that makes the valve unrepairable.

4.0 Requirements for all work

A. Visitor safety is imperative – careful scheduling as to minimalize impact to visitors.

B. Contractor is responsible to field verify all estimated quantities.

C. Contractor shall provide all materials, labor, equipment and supervision as well as perform all operations required to efficiently and effectively execute the requirements of the contract.

a. Work includes, but is not limited to, all materials, labor, equipment, tools, supervision and accidentals necessary to complete the work of this contract in compliance with accessibility standards, guidelines and regulations having jurisdiction.

D. Contractor shall provide fencing, barricades, signage, and flagging personnel to ensure visitor and employee safety during work hours. In addition the contractor is responsible for securing the site during non-working hours.

E. It is STRONGLY encouraged that each bidder visits the site and fully acquaints himself/herself with the problems and conditions he/she will encounter if he/she becomes 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.

F. The contractor shall provide any engineers drawings and design documents for approval prior to construction.

G. Contractor shall provide as-built drawings of completed work to the COR within 30 days of the completion of the project

H. The contractor shall give all requisite notices, obtain and pay for all permits. He/she shall pay all deposits and fees for the installation of the work specified herein, and contained in the drawings if they are necessary.

I. Contractor shall have all underground utilities located before the start of demolition.

J. All Excavations shall be monitored by a government appointed archaeologist and must be completed in 3” to 5” lifts to allow for archaeological monitoring.

K. Contractor to complete any warranty cards. At project completion the warranty cards are to be submitted to the COR.

L. Contractor is to provide weekly schedule updates to the COR for the following week for coordination with park events.

M. All work shall be conducted in a manner to minimize damage to existing vegetation. All areas disturbed under this contract shall be completely repaired and restored.

N. Contractor is to protect trees within the area of work and is to use caution not to damage the trees or their root systems during the project.

O. The contractor is responsible to verify that all construction and construction activities satisfy all local, state and federal regulations and laws.

P. Environmental protection: All treatments or chemicals used are to be submitted to the COR for approval. The water flows into a water way of “exceptional value” and must be free of toxic or harmful chemicals.

Q. Preservation of Natural Features: Confine all operations and storage of materials to immediate area of the project. Prevent damage to natural surroundings. Restore damaged areas and replace damaged trees and plants, at no additional expense to the Government. Provide temporary barriers to protect existing trees and plants and root zones. Do not remove, injure, or destroy trees or other plants without prior approval. Consult with Contracting Officer Representative (COR) and remove only roots and branches that interfere with construction and are approved by the COR.

R. Archeological Resources: If any evidence of prehistoric, historic, and recent 20th century artifacts, including charcoal, human bones, ash, fire rocks, and building materials that indicate the presence of past human occupation is encountered during construction, all work in that area shall stop immediately and the discovery shall be reported to the Contracting Officer Representative. The contractor must coordinate with the parks Archeologist to be on site during excavation.

S. Restoration of all ground and areas disturbed in execution of this contract shall be fully restored to original condition, including all grading, seeding (with Park approved native seed mixture), and mulching. Perennial ryegrass is not permitted. Any completed trail surface disturbed as part of this contract shall be restored to original condition.

T. Only the work indicated or required by this SOW, and under contract, shall be carried out. No additional work will be started without a written description of the work, a written statement of cost, “field verification” by the COR, and final approval by the CO in writing. In the written description of the proposed additional work there shall be a description of the proposed work, a clearly defined description of the area where the work will be performed including pictures of the area, and the contract number. Pictures shall show the condition of the area of proposed work at the time of the proposal. Pictures of the area of approved additional work will be required at each stage of the work as outlined and required elsewhere in this SOW. Additional work is defined as work that is not specifically included under the base bid and any accepted options for the work.

U. The Contractor is responsible for all quantities of material and work under the contract. It is the responsibility of the contractor to verify all site conditions prior to submitting their bid. No additional charges or payments beyond the bid price shall be allowed for existing conditions that are visible or reasonably evident at the time of bidding.

V. The Contractor shall provide all labor, materials, tools and equipment necessary for the successful prosecution and completion of the work.

W. All work and materials are to comply with all Federal, State, and Local Building Codes and standard practices.

X. The contractor shall perform their own punchlist, to be submitted to the COR, prior to any final inspection by the COR.

5.0. Quality Assurance:

A. 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.

B. The General/Prime Contractor shall assign a qualified job supervisor to the work who 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 their subcontractors. The supervisor shall meet the qualifications outlined below.

C. The General Contractor shall have experience in the successful completion of projects of similar scope, size and complexity that followed the Secretary of the Interior’s Standards for the Treatment of Historic Properties on significant portions or parts of the work as demonstrated below.

1. Minimum firm and worker qualifications required:

a. Minimum firm qualifications for the General Contractor or subcontractor that is performing the physical work on the water wheel is seven (7) years of experience demonstrated by the successful completion of a minimum of two (2) projects of similar scope, size and complexity in the last ten (10) years that followed the Secretary of Interior’s Standards for the Treatment of Historic Properties on significant portions or parts of the work.

i. Provide a list of projects of similar scope, size and complexity involving historic materials completed in the last ten (10) years. Provide a brief description including up to three (3) photographs of each of two (2) projects of similar scope, size and complexity completed in the past ten (10) years that followed the Secretary of the Interior’s Standards for the Treatment of Historic Properties on significant portions or parts of the work.

b. Job Superintendent: Minimum of seven (7) years of experience in the construction field; at least two (2) years of managing construction work crews. The job superintendent must have a demonstrated experience in working with heavy timber construction with a minimum of three (3) projects that followed the Secretary of the Interior’s Standards for the Treatment of Historic Properties on significant portions or parts of the work.

i. Provide a list of three (3) projects that followed the Secretary of the Interior’s Standards for the Treatment of Historic Properties on significant portions or parts of the work that the superintendent has worked on during his or her career. At least one (1) of the projects submitted must be one that he or she served as the superintendent of the work.

c. Carpenter: minimum of five (5) years as a finish carpenter with a demonstrated experience in working with historic buildings or structures with a minimum of two (2) projects that followed the Secretary of the Interior’s Standards for the Treatment of Historic Properties on significant portions or parts of the work.

i. Provide a list of two (2) projects that followed the Secretary of the Interior’s Standards for the Treatment of Historic Properties on significant portions or parts of the work that the carpenter has worked on as a finish carpenter during his or her career.

D. 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 – demolition, carpentry work, flashing and sheet metal work, roofing 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. Two sets of printed photographs of each stage of the work shall be submitted 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 bound in individual 3 ring binders which may 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 as well as the two printed copies of the project completion photographs.

E. Contractor’s Guarantee: The contractor shall guarantee their work and that of their 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 their work determined to be defective during this period. 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 their 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.

6.0. Project Schedule:

A. The period of performance for the work shall be 90 days after the Notice to Proceed is issued.

B. The Contractor shall provide a project schedule providing reasonable time for review and approval of submittals. At a minimum the schedule will show the start of each major phase or area of the work.

C. The Contractor shall confine their work to between the hours of 7 AM and 4 PM Monday through Friday. Work beyond these hours will require prior written approval by NPS. This request must be received in writing by the Contracting Specialist no less than 72 hours ahead of time

D. No work will be allowed on weekends and Federal Holidays. Work beyond these hours will require prior written approval by NPS. This request must be received in writing by the Contracting Specialist no less than 72 hours ahead of time

7.0. Submittals:

A. All contractor submittals shall be submitted on transmittal form CM_16.

B. The Contractor shall obtain and submit a minimum of 3 each, all material samples and manufacturer’s data sheets and other submittals required to the COR allowing sufficient time for review and approval or should it be necessary resubmittal without disruption of the project schedule.

C. Submit the following:

a. Payment and performance bond if required under the contract

b. Insurance certificates

c. List of subcontractors

d. Project schedule

e. Cleaning solution/product data sheet

f. Other products requiring NPS approval

g. Material Safety Data Sheets for all products where the manufacturer provides such information

h. Contractor’s project Safety plan that covers aspects of work required under the contract including worker and site safety. The safety plan shall be submitted and accepted before the start of any work on site

i. Samples of replacement lumber materials to be used

j. Samples and product data for fasteners

k. Color samples of any stains, paints or treatments D. Forward all submittals to Contracting Officer’s Representative at least 14 days prior to start of work. Submittals may be submitted via emails. For submittals that are hard copy submitted, submit three copies of each of the manufacturer's catalog sheets (cut sheets), three specimens of each sample, and three copies of all other submittals requested.

E. Manufacturers' Catalog Sheets: Submit only pertinent pages; mark each copy of standard printed data to identify specific products proposed for use.

F. Inspection and Maintenance Procedures: Provide manufacturer’s recommended inspection and maintenance procedures.

G. After reviewing submittals, the Contracting Officer Representative will return one copy of each submittal marked “APPROVED” or “DISAPPROVED” to the Contractor. The COR will identify the reasons for disapproval of submittals. Approval of submittals does not relieve contractor from compliance with these contract specifications nor with any other applicable regulations or standards.

8.0. Project Meetings:

A. Pre-Construction Meeting: prior to the start of the work the Contracting Officer (CO) shall schedule a meeting on site with the Contractor and the Contracting Officer’s Representative (COR). Items to be covered may include park rules and regulations relevant to the work, authorized representatives, correspondence and communication procedures, labor standards provisions, payroll reports, contract modification procedures, payments to the Contractor, submittals and the acceptance or rejection of products and subcontractors, documents required under the contract, OSHA compliance, reference materials, Contractor quality control, liquidated damages if applicable, notice to proceed, tentative construction schedule, weekly project meetings, and any other subjects deemed relevant to the current work by the CO.

B. Project meetings: weekly project meetings will be held on site beginning with the active prosecution of the work to review the progress of the work and to address any issues that may arise. The schedule will be determined at the Pre-construction Meeting.

9.0. Temporary facilities:

A. The Contractor may, at their own risk, locate on the site at a location approved by the COR a small storage shed or trailer for the storage of supplies and materials. Under no circumstances will any paints, supplies, equipment, or trash be left overnight or stored inside or around the buildings or NPS facilities. The Contractor’s storage facility shall be lockable and shall meet all requirements and/or applicable regulations for the storage of toxic and/or volatile, explosive or flammable materials where such materials are to be stored. Only material to be used on the work under this contract shall be stored on site. All materials stored for use on this job shall be stored and handled to prevent deterioration or intrusion of foreign matter.

B. No job signs will be allowed. No other signs shall be allowed.

C. The Contractor shall arrange for a temporary water service if needed.

D. The Contractor shall provide for temporary onsite electrical supply. The Contractor will provide all extension or drop cords required to connect to their electrical supply.

E. The Contractor shall confine their job traffic to paved road ways and drives except that he may deliver supplies for the day’s work to the work area. Parking of the Contractor’s employee’s vehicles will be restricted to paved or gravel areas.

F. The Contractor shall provide a portable toilet for the use of their personnel while working on the site and shall provide for the servicing of the same.

10.0. Site Cleanup:

A. The Contractor shall comply with local codes and regulation in the cleanup and disposal of construction debris and trash including regulations for the disposal of hazardous and/or toxic materials. Recycle construction waste to the extent possible.

B. The Contractor shall leave the site clean and free of trash at the end of each work day.

C. Partially used containers of paints, caulk and other material remain the property of the Contractor and shall not be left on premises at the end of the project.

D. At the end of the work prior to final inspection the Contractor shall police the site, picking up all trash whether from their work or not, remove any fencing or barriers erected during the course of the work, and fill any holes, tire marks, or other ground disturbance caused by the work and rake smooth.

E. Dumpsters will be covered when not in use.

12.0 SAFETY AND ACCIDENT PREVENTION PROGRAM

A. The Contractor shall be responsible for all employee safety on the work site and shall establish an effective accident prevention program providing a safe environment for all personnel and visitors. Report any and all accidents or injuries that occur to the COR. Place all require protective barriers and take all necessary measures to assure unauthorized persons do not enter the work site. Assure there are no hazards to park visitors during execution of the work.

B. ACCIDENT PREVENTION PLAN: Before on-site work begins, submit to the COR for approval an accident prevention plan, containing as a minimum, the following information:

a. Name of responsible supervisor to carry out the program.

b. Safety meetings - As a minimum, conduct weekly 15-minute "tailgate" safety meetings. These meetings shall be conducted by a responsible person and attended by all construction personnel at the worksite. A copy of the safety meeting minutes will be submitted with the daily construction reports.

c. First aid procedures - Provide adequate facilities for the number of employees and the type of construction at the site. Provide adequate training to ensure prompt and efficient first aid.

d. Hazard Assessment - Outline each phase of the work, the hazards associated with each major phase, and the methods proposed to ensure property protection and safety of the public, National Park Service personnel, and Contractor's employees.

e. Training - Assure all employees have adequate initial and continuing training for the tasks that they perform. Also, train and instruct each employee exposed to hazardous materials (explosive, flammable, poisonous, corrosive, oxidizing, irritating, or otherwise harmful substances that could cause death or injury) in safe and approved methods of handling and storage.

f. Emergency Planning - Planning for possible emergency situations including floods, fires, cave-ins, wind storms, etc.

g. Housekeeping - Keep project site in a clean, neat, and safe condition at all times.

h. Fire Protection - Maintain adequate and proper fire protection equipment on site at all times.

i. This project is a required safety vest or shirt and hard hat area.

C. EMERGENCY INSTRUCTIONS: Post telephone numbers and reporting instructions for ambulance, physician, hospital, fire department, and police in conspicuous locations at the work site.

D. ACCIDENT REPORTING: Notify COR immediately in the event of a reportable accident. A reportable accident is defined as death, occupational disease, traumatic injury to employees or the public, property damage by accident in excess of $100, and fires. Within 7 days of a reportable accident, fill out and forward to the Contracting Officer a DI-134 form, which may be obtained from Contracting Officer. The Contractor shall report all other accidents to the Contracting Officer as soon as possible and assist the Contracting Officer and other officials as required in the investigation of the accident.

E. Safety of visitors is of the utmost importance. The contractor will make sure that all active work areas are properly fences using Orange 4 foot high construction fencing and steel poles. Work area to be fenced will be at the discretion of the COR.

F. HARD HATS AND SAFETY VEST AND PROTECTIVE EQUIPMENT: All construction areas in Valley Forge National Historical Park are deemed Hard Hat and Safety vest areas. The hard hat area shall be posted by the Contractor and it is the Contractor's responsibility to require all those working on or visiting the site to wear hard hats, Safety vest and other necessary protective equipment at all times.

13.0 SPECIAL CONSTRUCTION REQUIREMENTS

A. It is highly recommended that the Contractor verify all measurements regarding this contract by making a site visit.

B. A site visit will be scheduled with the designated Contracting Officer's Representative, James Moore. Please call Mr. Moore for further details and meeting arrangements at 610-783-1024. Any questions that arise during the site visit, prior to proposal submission, shall be made in writing and submitted to the Contracting Office via email.

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