Attachment_1_SOW_MONO_Rehabilitate_Gambrill_Mill_Sidewalk_Rev_1_8_22_2025.pdf

United States Department of the Interior

NATIONAL PARK SERVICE

NATIONAL CAPITAL AREA

1100 Ohio Drive S.W.

Washington, D.C., 20242

NPS-National Capital Area – MONO FY25 Rehabilitate the Gambrill Mill Sidewalk Page 1 of 16

Monocacy National Battlefield MONO FY25 Rehabilitate the Gambrill Mill Sidewalk

Rev 1 - 8/22/25

Scope of Work

1.0 GENERAL

Monocacy National Battlefield (MONO) in Frederick, MD seeks a masonry contractor with a minimum of 10 years of stone masonry experience to rehabilitate the flagstone sidewalk, remove existing flagpole, and replace wood curbing at the Gambrill Mill House.

It is strongly recommended that the contractor’s visit and inspect the site to verify all estimated quantities, and existing conditions provided by the Government and to observe the complexities of conducting masonry activities on a historic landscape with sloping topography, tree lines, occupied roadways, and human interaction. For this requirement safety, consultation, communication, and teamwork is critical. Please quote accordingly.

Gambrill Mill House, Monocacy National Battlefield 4801 Urbana Pike Frederick, MD 21704

2.0 PURPOSE

As defined by the park’s Foundation Document, “The purpose of Monocacy National Battlefield is to preserve the… buildings, to commemorate the Battle of Monocacy…”. Historic and non-historic structures are critical to operations that preserve and interpret the Battle of Monocacy. The Gambrill Mill House sidewalk is key to allow access to the building for visitor support services.

3.0 TASKS

The contractor shall:

3.1 Rehabilitate Gambrill Mill House Sidewalk

Provide all labor, supervision, materials, tools, supplies, transportation, license, certificates, permits, personal protection equipment, professional services, and equipment incidental to and necessary to provide removal of existing flagstone sidewalk and setting bed, replacement of approximately 40% of existing flagstone that is broken or delaminated, relaying the sidewalk in its entirety with the existing unbroke and

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Preserving unimpaired the natural and cultural resources and values of the national park system for the enjoyment, education, and inspiration of this and future generations.

replacement stone in a new mortar bed with flush joints to match existing, remove flagpole and footing, backfill and topsoil flagpole area, and replacing wood curbing between sidewalk and asphalt parking lot.

* Note all quantities are approximates, contractors shall be responsible for verifying quantities for bidding purposes. Contractor shall bid accordingly for actual work required on the sidewalk.

3.1.1 Sidewalk Work Items

Description Unit Quantity

Remove existing Flagstone system

Square Foot 875

Remove and replace wood curbing

Linear Foot 38

Remove existing Mortar Bed Square Foot 875 Remove flagpole and footing concrete

Assembly 1

Backfill flagpole area with topsoil Cubic Yard 5 Provide Replacement flagstone Square Foot 350 Place new mortar bed on existing slab

Square Foot 875

Relay Sidewalk with good existing and replacement flagstone

Square Foot 875

Repoint new flagstone with flush joint

Square Foot 875

3.2 General Requirements

3.2.1 The flagstone removed for this project shall be placed back in their respective existing positions to maintain the historic orientation and maintain the correct radius. The contractor shall number and trace on plastic sheeting each stone even if the stone will be replaced due to damage. Replacement stones shall be tooled to match and shape of the existing stone they are replacing. Cut unit pavers with motor-driven masonry saw equipment to provide clean, sharp, unchipped edges.

Cut units to provide pattern indicated and to fit adjoining work neatly. Use full units without cutting where possible. Do not use unit pavers with chips, cracks, voids, discolorations, or other defects that might be visible or cause staining in finished work.

3.2.2 All elevations and dimensions of the rehabilitated sidewalk shall match existing conditions. Tolerances: Do not exceed1/16-inch (1.6-mm) unit-to-unit offset from flush (lippage) nor 1/8 inch in 24 inches (3 mm in 600 mm) and 1/4 inch in 10 feet (6 mm in 3 m) from level, or indicated slope, for finished surface of paving

3.2.3 Contractor shall not damage existing concrete slab while removing existing

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Preserving unimpaired the natural and cultural resources and values of the national park system for the enjoyment, flagstone and mortar bedding. Existing slab shall be cleaned and prepped to receive new mortar bed.

3.2.4 Contractor shall replace 38 linear of 6”x6” pressure treated pine wood curbing between the flagstone sidewalk and the asphalt parking lot. Elevation shall match existing profile including handicap entrance. Curb shall be pinned in center, every 4’ with #4 rebar 18inch in length. Each curb timber shall have a rebar pin with 12” of ends.

3.2.5 Contractor shall supply new stone paver that matches existing in size, color, texture and ratio of color. Potential stone paver suppliers shall be as follows Irwin Stone, 275 Interstate Cir., Fredrick MD 21704, Potomac Valley Brick, 8306 Cinderbed Road, Newington, VA, L.C. Smith, 5920 Farrington Avenue, Alexandria, VA or others.

3.2.6 Mortar - General: Comply with referenced standards and with manufacturers' written instructions for mix proportions, mixing equipment, mixer speeds, mixing containers, mixing time, and other procedures needed to produce mortar of uniform quality and with optimum performance characteristics. Do not use admixtures, including pigments, air-entraining agents, accelerators, retarders, water-repellent agents, antifreeze compounds, or other admixtures, unless otherwise indicated. Do not use calcium chloride. Combine and thoroughly mix cementitious materials, water, and aggregates in a mechanical batch mixer, unless otherwise indicated. Discard mortar when it has reached initial set. Water shall be Potable. Comply with referenced standards and with manufacturers' written instructions for mix proportions, mixing equipment, mixer speeds, mixing containers, mixing times, and other procedures needed to produce setting-bed and joint materials of uniform quality and with optimal performance characteristics.

Discard mortars and grout if they have reached their initial set before being used.

3.2.7 Mortar: Portland Cement-Lime Mix. Type M mortars are mixed with 1 part Portland Cement, up to ¼ part lime, and 3 parts masonry sand. Water as required.

It shall comply with ASTM C270. Contractor to provide recommendations on mix to meet product, climate, and project needs. Standard Portland Cement shall meet the requirements of DDOT spec 2013 SECTION 801.01 Portland Cement and AASHTO M 85, Type I. Provide natural color or white cement as required to produce mortar color indicated. Color samples are required. Low-Alkali Cement:

Not more than 0.60 percent total alkali when tested according to ASTM C 114.

Sand shall be masonry sand and shall comply with DDOT Specifications 2013 Section 803.06 and ASTM C144. Hydrated lime shall comply with ASTM C 207, Type S. Masonry cement shall meet the requirements of ASTM C 91, Type M unless otherwise specified.

3.2.8 MORTAR SETTING-BED APPLICATIONS. Saturate concrete subbase with clean water several hours before placing setting bed. Remove surface water about one hour before placing setting bed. Apply mortar-bed bond coat over surface of concrete subbase about 15 minutes before placing mortar bed. Do not exceed 1/16-inch (1.6-mm) thickness for bond coat. Limit area of bond coat to avoid its drying out before placing setting bed. Apply mortar bed over bond coat; spread and screed

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Preserving unimpaired the natural and cultural resources and values of the national park system for the enjoyment, mortar bed to uniform thickness at subgrade elevations required for accurate setting of pavers to finished grades indicated. Mix and place only that amount of mortar bed that can be covered with pavers before initial set. Before placing pavers, cut back, bevel edge, and remove and discard setting-bed material that has reached initial set. Wet stone pavers before laying if the initial rate of absorption exceeds 30 g/30 sq. in. (30 g/194 sq. cm) per minute when tested according to ASTM C 67. Allow units to absorb water so they are damp but not wet at time of laying. Place pavers before initial set of cement occurs. Immediately before placing pavers on mortar bed, apply uniform 1/16-inch- (1.5-mm-) thick bond coat to mortar bed or to back of each paver with a flat trowel. Tamp or beat pavers with a wooden block or rubber mallet to obtain full contact with setting bed and to bring finished surfaces within indicated tolerances. Set each paver in a single operation before initial set of mortar; do not return to areas already set or disturb pavers for purposes of realigning finished surfaces or adjusting joints. Provide joint widths to match existing. Grout paver joints complying with ANSI A108.10. Grout joints as soon as possible after initial set of setting bed. Force grout into joints, taking care not to smear grout on adjoining surfaces. Clean pavers as grouting progresses by dry brushing or rubbing with dry burlap to remove smears. Tool exposed joints slightly concave when thumbprint hard before tooling joints.

3.2.9 The government shall provide water for filling tank at the park’s Maintenance Shop directly adjacent to the Gambrill Mill House. No utilities shall be provided at any of the work sites.

3.2.10 In the event that artifacts and/or archaeologically significant materials are uncovered during construction, the contractor shall immediately Stop work, leave material in place, and notify the COR. The COR shall notify NPS archaeologist.

All artifacts and material of archaeological significance shall remain the property of the United States Government. No artifacts shall be disturbed or removed by the contractor pursuant to the Archaeological Resources Protection Act of 1979.

3.2.11 In the event that Unexploded Ordinance (UXO) or any object possibly resembling ordinance or weapons is discovered, contractor shall stop work immediately, leave item in place, and notify the COR immediately. NPS law enforcement with secure the area until safety clearance is established and work can resume.

3.2.12 All materials shall be new and match approved submittals.

3.2.13 All commercial products utilized for this requirement shall be submitted with a CM-16 Transmittal form for approval by the COR.

3.2.14 Restore turf in any area negatively affected by contractors operations. Grass seed mix for turf restoration activities shall be a MD State Certified seed mix for full sun.

4.0 SAFETY

4.1 All operations shall be conducted in accordance with ICC family of codes, laws, rules, regulations, OSHA, NPS, MUTCD and ANSI safety requirements. All contractor

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Preserving unimpaired the natural and cultural resources and values of the national park system for the enjoyment, education, and inspiration of this and future generations.

employees shall wear OSHA, MUTCD and ANSI required personal protective equipment (PPE).

4.2 All equipment/tools shall only be used within the limits of the manufacture’s recommendations.

4.3 All tools/machinery/equipment shall be safeguarded from the public.

Tools/machinery/equipment shall not be left unattended. All tools/equipment shall not be allowed to lie around except in the immediate work area. Any tools not in immediate use shall be staged or stowed in such manner so as not to create a hazard.

4.4 The contractor shall report emergency situations, such as accidents involving property and/or personal injury or other unforeseen circumstances and shall follow required emergency reporting procedures according their COR approved Safety Plan. In the event of an emergency the contractor shall dial 911 or 866-677-6677. All other instance the contractor shall dial park law enforcement at 866-677-6677 and notify the COR with 24 hours of the incident.

4.5 Contractor shall provide a comprehensive site specific safety plan for approval before any work begins. An onsite qualified Safety Representative shall be identified including contact information.

5.0 GOVERNMENT PROVIDED INFORMATION AND SERVICES

5.1 For this requirement, the Government will provide the following:

• CM 16 Submittal Form

• Price Schedule Template

• Davis Bacon Act Wage Determination

6.0 ADDITIONAL CONTRACTOR REQUIREMENTS

6.1 The contractor SHALL furnish and/or provide:

6.1.1 A written designation of a supervisor(s) and an alternate supervisor(s) with the same qualifications as the proposed supervisor: The supervisor and/or alternate supervisor is required to be present on-site at all times during all operations to direct contract personnel and maintain operations. The on-site supervisor MUST:

6.1.1.1 Be fluent in the English language in order to effectively communicate with the contractor’s employees and/or subcontractors as well as the COR and other Government personnel.

6.1.1.2 Be available for phone calls during all working hours, and have the authority to stop all work or unsatisfactory performance as directed by the COR.

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Preserving unimpaired the natural and cultural resources and values of the national park system for the enjoyment, education, and inspiration of this and future generations.

6.1.1.3 Possess 5 years verifiable experience and technical competence in masonry operations and construction safety practices as well as 2 years supervisory experience, submitted as a resume.

6.1.1.4 Be responsible for controlling the quality of work and inspecting all completed work to ensure that correct performance requirements are met.

6.2 Sufficient manpower and equipment.

6.3 A trained and experienced workforce that shall be knowledgeable and familiar with the technical aspects and hazards of masonry operations.

6.4 Staff recognizable as employees of the contractor. Distinctive clothing shall be worn that is uniform in appearance and include long pants, shirts, hats, and seasonal outerwear, which that bears the name and logo of the company and the name of the employee.

6.5 Daily Work Log

6.5.1 The contractor shall maintain a daily work log by filling out completely, and as applicable, the Daily Work Log Form provided to them by the Government. The daily work log shall be submitted to the COR via email after week of work and or any time requested by the COR, CS, or CO.

6.5.2 The contractor shall also note in the daily work log the presence of any damage or conditions that may affect the visual quality or the contractor ability to perform work.

The contractor shall note and report to the COR any maintenance issues or problems that arise, which are not within the scope of work.

6.6 Provide Submittals and implement them after approved by the COR. A CM 16 Submittal Form shall be used as a cover sheet for every submittal and will be provided by the Government to the contractor at award. Multiple submittals may be listed on a single CM 16 submittal form. The Required submittals include but may not be limited to:

Document Description Due 1 Superintendent & Alt. Superintendent Resumes With quote package 2 Payment bond or Alternative Payment Protection 10 days after award 3 Certificate of Insurance 10 days after award 4 Resume 10 years’ experience With quote package 5 SF 1413 for all Subcontractors 15 days after award 6 Schedule of Values 15 days after award 7 Superintendent & Alt. Superintendent Designation 15 days after award 8 Quality Control Plan 15 days after award 9 Construction Schedule With quote package 10 Hazardous Material Plan Prior to NTP 11 Site Specific Safety & Accident Plan Prior to NTP 12 Grass Seed Mix 15 days before reseeding

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Preserving unimpaired the natural and cultural resources and values of the national park system for the enjoyment, 13 Wood curbing Product Data Before Curbing Work 14 Replacement Flagstone Before Masonry Work 15 Mortar Ingredient Product Data Before Masonry Work 16 Mortar Color Samples Before Masonry Work 17 Daily Work Logs Weekly 18 Final Inspection Report Prior to Final Invoice 19 Warranty Letter Prior to Final Invoice 20 Release of Claims (DI-137) Prior to Final Invoice

6.7 That all materials will be installed to manufacturer specifications.

6.8 That all work will follow applicable codes and regulations.

6.9 All materials and labor must carry a one-year warranty from the date of final inspection.

6.10 The contractor shall provide a written descriptions to the park on the maintenance of products, including all product performance data and applicable warranty

6.11 Submit a construction schedule at notice to proceed and continually update as project progresses and with all payment applications.

6.12 Contractor shall furnish a portable toilet facility for construction personnel. Portable toilet shall be maintained in a sanitary manner with regularly scheduled cleaning and shall be locked during non-work hours. Location of portable toilet shall be determined via coordination between the COR and Contractor.

7.0 CONTRACTOR RESPONSIBILITY

7.1 Providing adequate fencing and traffic control devices to protect their operations as well as the public from hazard during performance on this contract. Limit of disturbance shall be 10 feet from edges of the sidewalk.

7.2 Compliance with all federal, state, local, environmental laws, regulations, and policies regarding hazardous materials specifically any chemicals the contractor uses in the performance of work on this contract and handling of waste.

7.3 Ensuring that all work satisfies all applicable federal, state, and local codes/standards.

The Contractor shall comply with all applicable Federal, State, and National Park Service environmental statutes and regulations.

7.4 Contractor Employee Conduct: The Contractor’s employees shall, always, while on the job site, whether on or off duty, conduct themselves in a professional, orderly, and safe manner. Rudeness, fighting, being under the influence of alcohol and/or drugs or bringing and/or consuming alcohol and/or drugs, gambling, soliciting, stealing, and any immoral or otherwise undesirable conduct shall not be permitted on the job site. Any employee engaging in such conduct shall immediately and permanent be removal from the job site.

7.4.1 All contract employees shall display professionalism in all interactions with

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Preserving unimpaired the natural and cultural resources and values of the national park system for the enjoyment, one another, the public and Government employees. The Contracting Officer may require the Contractor to remove any employee working under this requirement for reasons of misconduct and security, or if found to be (or suspected to be) under the influence of alcohol, drugs, or other incapacitating agent(s).

7.4.2 A contractor’s employee shall be subject to removal from the premises upon determination by the Contracting Officer that such action is in the best interests of the Government. Such removal from the job site or dismissal from the premises shall not relieve the Contractor of the requirement to provide sufficient personnel to perform the service as specified.

7.4.3 All areas used by the Contractor within park boundaries shall be kept neat and organized. All equipment must be properly maintained and secured at the end of each day. The contractor shall not leave any tools, parts and/or supplies unattended in at any time while performing services

7.4.4 Contractor employees shall not loiter in any working or patron area. Upon completion of their assigned work, employees shall promptly depart from the public areas.

7.4.5 Photographs, social media posts, online content, or any form of communication is strictly prohibited regarding all aspects of this requirement unless authorized in writing by the COR.

7.5 Any refuse generated daily by the contractor must be secured and disposed of properly outside of park boundaries in accordance with federal, state, and local laws.

7.6 Transit of their entire operational footprint daily, the government will not provide any space for overnight or extended storage of vehicles or equipment associated with this contract.

7.7 Confining work, the storage of materials and equipment, the parking of vehicles, and all other operations in connection with this contract to the specified hours and work areas approved by the COR. All damage resulting from such operations shall be repaired to its original condition to the satisfaction of the COR at no additional cost to the Government.

7.8 For all damages and liability for any loss or damage to Government property caused by their operations and shall assume full responsibility for any and all damages or claims for damage resulting from injury to persons, property or equipment, which might result from any work performed under this contract.

7.9 Ensuring that proper safety and health precautions are in place to protect the work, the workers, the public, and the property of others at all times in performance of this contract.

7.10 For the repair or replacement of all damaged Government property caused by their, operations.

7.11 In instances where the contractor finds pre-existing conditions or damage to park resources that may reflect upon the quality of the work or cause undue liability, the contractor shall not start work until the contractor and COR have agreed on the responsibility for these pre-existing conditions.

7.12 All losses and/or damages shall be reported to the COR, within two (2) hours of any loss and/or damage being determined and before leaving the area loss occurred.

Contractor shall provide written documentation of the loss and/or damage to the CO and COR within 24 hours of occurrence. The documentation must include at least:

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Preserving unimpaired the natural and cultural resources and values of the national park system for the enjoyment,

• Time and Date of occurrence

• Type of Loss or Damage

• Name (s) and Contact Numbers of People involved

• Impact to park operation and/or assets effected by incident

• Any details leading up to and after the incident

7.13 For all identified losses and/or damages:

• The contractor shall take any immediate actions necessary to prevent further damage.

• Is responsible for all costs associated with reported damages and/or losses to persons or property that occur as a result of the contractor’s negligence.

• The Government, at its sole direction, may elect to repair and/or replace the damaged property, and deduct such costs from monies due the contractor.

8.0 COMMENCEMENT, PROSECUTION, AND COMPLETION

The Contractor shall commence Work upon issuance of the Notice to Proceed (NTP). The Work is anticipated to be completed within 90 calendar days from the NTP.

The Contractor shall submit, as part of its quote, a detailed schedule identifying all repair activities, sequencing, and estimated durations. The schedule shall clearly demonstrate how the Work will be prosecuted efficiently to meet the contract completion date while minimizing disruption to ongoing facility operations.

The Contractor shall update the schedule as required during performance to reflect actual progress and shall submit any revisions to the Contracting Officer (CO) and Contracting Officer’s Representative (COR) for review and approval.

9.0 HOURS OF OPERATION

Sidewalk rehabilitation operations shall be conducted between the hours of 6:30 am –4:00 pm ET, Monday – Friday, except when the Government facility is closed due to local or national emergencies, administrative closings, or similar Government directed facility closings. The contractor will not be reimbursed when the government facility is closed for the above reasons unless emergency services are requested. Access to some areas may be limited at times due to scheduled or unscheduled events.

No Work shall take place on the following Federal Holidays:

New Year’s Day – January 1st

Martin Luther King Junior’s Birthday – Third Monday in January President’s Day – Third Monday in February Memorial Day – Last Monday in May Juneteenth – June 19th Independence Day – July 4th Labor Day – First Monday in September Columbus Day – Second Monday in October Veteran’s Day – November 11th

Thanksgiving Day – Fourth Thursday in November

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Preserving unimpaired the natural and cultural resources and values of the national park system for the enjoyment, Christmas Day – December 25th

Additional No Workday – Battle Anniversary July 9th

Note - if any of the holidays stated above fall on a Saturday, the Friday before the actual day is the official day the Government takes for the holiday. If the holiday falls on a Sunday, the Monday after the actual day is the official day the Government takes for the holiday. These dates do not account for any other days or shorten days that may be added prior to any of the holidays mentioned above that may be added at the discretion of any Presidential Administration and implemented by the DOI.

10.0 ADDITIONAL APPLICABLE REGULATIONS AND POLICIES

10.1 Publications that apply include:

• Monocacy National Battlefield’s Superintendent’s Compendium

• MUTCD

• OSHA

• Code of Federal Regulations (CFR)

• ANSI

• Federal, State and Local Environmental Laws, Regulations, and Policies

• Secretary of the Interior’s Standards for the Treatment of Historic Properties.

• ICC Family of Codes

• ASTM

11.0 DEFINITIONS

Safety Plan: A written document that takes into consideration the risk assessment of the requirement and develops reasonable concepts, behaviors, and disciplines to mitigate the assessed risk. Includes site and task specific information.

Contracting Officer (CO): The person executing this contract on behalf of the Government, including any duly appointed successor and authorized representatives of the Contracting Officer acting within the limits of his/her authority.

Contracting Officer's Representative (COR): The on-site contract administrator for the Contracting Officer. The duties and responsibilities of the Contracting Officer’s Representatives are defined below in this Section or in a letter of designation issued by the Contracting Officer.

Contractor: The individual, partnership, joint venture, or corporation undertaking the execution of work under the terms of the contract and acting directly or through their agent, employees, or subcontractors.

CS: Contract Specialist; primary liaison and contact between the contractor, COR, and CO.

https://www.nps.gov/anti/learn/management/lawsandpolicies.htm https://www.roads.maryland.gov/mdotsha/pages/Index.aspx?PageId=835 https://www.osha.gov/ https://www.ecfr.gov/cgi-bin/ECFR?page=browse https://ansi.org/ https://www.epa.gov/laws-regulations https://mde.maryland.gov/programs/Regulations/Pages/index.aspx

MONO FY25 Rehabilitate the Gambrill Mill Sidewalk Page 11 of 16

Preserving unimpaired the natural and cultural resources and values of the national park system for the enjoyment, Daily Work Log: A Government Form that the contractor shall use to record required information with regard to the requirement on a daily basis. This form is delivered electronically to the COR each work week.

Hazardous Material Plan: Detailed written document detailing all assessment, treatment, handling, cleanup, protection, documentation, and disposal of any potentially hazardous materials associated with this project, most notably treated wood and silica.

NTE: Not to exceed (quantity).

QC: Quality Control: Actions taken by a contractor to carry out a written Quality Control Plan to ensure the performance of contracted services meet the SOW requirements

Quality Control Plan: A written document created by the contractor outlining the specific actions the contractor will take to ensure the performance of contracted services meet the requirements contained within the SOW.

Quality Assurance: Actions taken by the Government to assure contracted services meet SOW requirements.

Safety Plan- Detailed planning document which accounts for site specific hazards and operations while providing detailed mitigations to ensure compliance with all applicable safety codes and law. Plan shall include site specific emergency contacts and response information as well as prime contractor responsible personnel.

SOW: Scope of Work; document that describes the work to be performed by the contractor and contractual obligations.

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Preserving unimpaired the natural and cultural resources and values of the national park system for the enjoyment,

12.0 EXISTING CONDITIONS PHOTOGRAPHS, MAPS, & DRAWINGS

Facing Gambrill Mill

Sidewalk Along Parking

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Preserving unimpaired the natural and cultural resources and values of the national park system for the enjoyment, Flagpole Base Flagpole

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Preserving unimpaired the natural and cultural resources and values of the national park system for the enjoyment, Sidewalk Closest to the Gambrill Mill Sidewalk Facing Parking Lot

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Preserving unimpaired the natural and cultural resources and values of the national park system for the enjoyment, Sidewalk Facing Parking Lot

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Preserving unimpaired the natural and cultural resources and values of the national park system for the enjoyment, Wood Curbing 1 Wood Curbing 2

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