B08_Solicitation_-_SOW_-_Fire_Hydrants.pdf

National Mall and Memorial Parks

WWII Memorial and East Potomac Maintenance Yard

Fire Hydrant Replacement

PMIS- 355306

PROJECT SPECIFICATIONS

NATIONAL PARK SERVICE

08/24/2026

TABLE OF CONTENTS

DIVISION 01 – GENERAL REQUIREMENTS

Section 01 10 00 – Division 01 Short Form General Requirements

TECHNICAL REQUIREMENTS

Fire Hydrant Replacement and Appurtenances

Protective Steel Bollards – WWII Memorial

Concrete Sidewalk Restoration – WWII Memorial

Turf Protection and Landscape Restoration

Post-Installation Hydrant Flow Test

Hydrant Flow-Capacity Marking

Concrete Removal and Replacement

TECHNICAL REQUIREMENTS – UNDERGROUND PIPING CERTIFICATION

SECTION 01 10 00

DIVISION 01 SHORT FORM GENERAL REQUIREMENTS

PART 1 – GENERAL

ITEM 1 – DESCRIPTION OF WORK

1.1 Background

The National Park Service (NPS), National Mall and Memorial Parks (NAMA), requires replacement of two (2) existing fire hydrants at two separate locations in Washington, DC.

One (1) fire hydrant is located at the World War II Memorial (WWII Memorial) and one (1) fire hydrant is located at the East Potomac Maintenance Yard (EPMY).

The existing hydrants identified for replacement are damaged or deteriorated beyond practical repair. Work will require excavation, removal of the existing hydrants and associated components as required, installation of new fire hydrants, connection to the existing water distribution/fire-protection system, testing, backfill, and complete restoration of surfaces disturbed by construction.

The WWII Memorial is a nationally significant historic site with high public visitation. EPMY is an active National Park Service maintenance facility. Work shall be planned and performed to protect visitors, employees, historic and cultural resources, utilities, landscaping, existing improvements, and ongoing Park operations.

1.2 Work Covered by the Contract Documents

A. Project Locations and Quantities

1. World War II Memorial 5 Homefront Drive SW Washington, DC 20004

• Remove and replace one (1) existing fire hydrant.

• Furnish and install two (2) permanent protective steel bollards at the replacement hydrant.

• Furnish and install one (1) yellow protective bollard sleeve on each bollard.

• Perform associated excavation, connection, testing, backfill, concrete sidewalk restoration, landscaping restoration, and other work necessary for a complete installation.

• Concrete replacement is estimated at 110 square feet. 6 -inch depth

2. East Potomac Maintenance Yard 750 Buckeye Drive SW Washington, DC 20024

• Remove and replace one (1) existing fire hydrant.

• Perform associated excavation, connection, testing, backfill, concrete and/or landscape restoration as applicable, and other work necessary for a complete installation.

• Concrete replacement is estimated at 200 square feet. 6-inch depth

Total estimated concrete replacement: 330 square feet.

Total Contract Quantity: Two (2) fire hydrant replacements.

B. General Scope

The Contractor shall furnish all labor, supervision, materials, equipment, tools, transportation, excavation, utility coordination, temporary protection, testing, documentation, disposal, restoration, and incidentals necessary to provide complete and operational fire hydrant installations.

Work includes, but is not limited to:

1. Locate and verify underground utilities before excavation.

2. Coordinate required water-system and fire-protection shutdowns.

3. Establish and maintain public and work-area protection.

4. Excavate and expose existing hydrants and associated piping.

5. Remove and legally dispose of existing hydrants designated for disposal.

6. Furnish and install new dry-barrel fire hydrants meeting the requirements of the Contract Documents.

7. Furnish and install required fittings, restraints, gaskets, adapters, hardware, and appurtenances.

8. Connect replacement hydrants to the existing water distribution/fire-protection system.

9. Install two protective bollards at the WWII Memorial hydrant.

10. Perform required testing, flushing, operational verification, and commissioning.

11. Backfill and compact excavated areas.

12. Restore all concrete sidewalk, turf, landscaping, and other surfaces disturbed by construction.

13. Construct and obtain acceptance of the required sidewalk mock-up before production sidewalk restoration at the WWII Memorial.

14. Provide required coatings and finishes.

15. Provide construction photographs, test reports, warranties, as-built documentation, and closeout information.

16. The Contractor shall provide all labor, materials, equipment, saw cutting, demolition, excavation, disposal, subgrade preparation, forming, reinforcement as applicable, concrete placement, finishing, curing, protection, and incidental work necessary to remove and replace approximately 330 square feet of existing concrete associated with the fire hydrant replacement work.

C. Contract

All work will be performed under a single contract.

D. Period of Performance

Work shall be completed within 60 calendar days of the start date provided in the Notice to Proceed.

The period of performance is inclusive of submittals, procurement lead times, material deliveries, mobilization, utility coordination, water-system shutdowns, excavation, demolition, installation, restoration, testing, commissioning, punch-list correction, and final acceptance.

The Contractor shall incorporate long-lead items into the construction schedule.

1.3 EXISTING CONDITION PROTECTIONS

A. Preservation of Historical and Archeological Resources

If, in connection with operations under this contract, the Contractor, subcontractors, or employees discover, encounter, or become aware of possible historical or archeological remains, objects, sites, fossils, artifacts, graves, grave markers, or other items of potential cultural-resource value not specifically identified in the Contract Documents, the Contractor shall immediately:

1. Suspend operations in the vicinity of the discovery.

2. Immediately notify the Contracting Officer.

3. When safe to do so, provide written documentation and photographs identifying the location and nature of the discovery within two (2) days.

4. Leave discovered objects in place unless otherwise directed.

No object of potential cultural-resource value shall be removed from the site without authorization.

The Contractor shall protect cultural resources within and adjacent to the project area from damage.

If damage occurs to a cultural resource, immediately notify the CO and COR and suspend work in the affected area until authorized to proceed.

The Contractor shall incorporate these requirements into applicable subcontracts.

B. WWII Memorial Historic Resource Protection

The Contractor shall exercise particular care during work at the WWII Memorial.

Protect all:

• Memorial stonework.

• Architectural finishes and features.

• Existing concrete.

• Curbs.

• Landscaping.

• Trees and vegetation.

• Signs.

• Fixtures.

• Utilities.

• Other Government property.

Do not place equipment, tools, excavated materials, construction materials, or debris against memorial stonework or architectural features.

Concrete slurry, wash water, fuels, oils, chemicals, rust, excavated soil, and other construction materials shall not contact, stain, discolor, or damage memorial surfaces.

Damage caused by Contractor operations shall be immediately reported and corrected in accordance with the Contract Documents.

C. Archeological Monitoring

All ground disturbance at the WWII Memorial shall be coordinated with NPS Cultural Resources and the COR.

ITEM 2 – PROTECTING EXISTING UTILITIES

2.1 Utility Location

Notify the CO, COR, and applicable utility-location services before excavation, drilling, saw cutting, coring, or other subsurface disturbance.

The Contractor shall locate and protect existing utilities within the work area, including:

• Water mains.

• Hydrant leads.

• Water valves.

• Electrical conduits.

• Communications.

• Irrigation.

• Drainage systems.

• Other underground infrastructure.

Utility-location documentation shall be available before excavation begins.

2.2 Utility Damage

If the Contractor damages a known utility, immediately notify the CO and COR when safe to do so. Damage resulting from Contractor operations shall be corrected in accordance with the Contract Documents.

If an unidentified utility is encountered, stop affected work, protect the utility, and notify the CO and COR before proceeding.

2.3 Existing Utility Interruptions

Do not interrupt water service or fire-protection service without prior Government authorization.

A. Notification

Provide not less than two (2) business days' advance notice to the CO and COR before a requested water-system shutdown unless a longer notification period is established by the Contract Documents or AHJ.

B. Valve Operation

The Contractor shall not operate Government-controlled water-system valves unless specifically authorized.

C. Shutdown Preparation

HYDRANT CONTROL VALVE LOCATION AND OPERATIONAL VERIFICATION

A. General: Prior to scheduling or commencing the actual replacement of either fire hydrant, the Contractor shall locate, identify, mark, and verify the operational condition of the underground control valve(s) serving the hydrant to be replaced.

B. Valve Location and Identification: The Contractor shall field locate and positively identify the hydrant-specific control valve(s) necessary to isolate each hydrant from the water distribution/fire protection system. Valve locations shall be clearly marked in the field and documented prior to scheduling the associated hydrant replacement.

C. Operational Verification: The Contractor shall verify that each identified control valve is accessible and operational and is capable of isolating the associated hydrant sufficiently to permit replacement while minimizing disruption to the remainder of the water distribution/fire protection system.

D. Coordination: All valve operation and verification activities shall be coordinated in advance with the COR and applicable NPS personnel. The Contractor shall not operate Government-controlled valves or interrupt water service without prior Government authorization.

E. Verification Prior to Scheduling Replacement: Valve location and operational verification shall be completed sufficiently in advance of the proposed hydrant replacement and associated water-system shutdown. Actual hydrant replacement shall not be scheduled until the required control valve(s) have been located and their operational condition verified.

F. Inoperable or Unavailable Valves: If a required control valve:

1. Cannot be located;

2. Is inaccessible;

3. Cannot be operated;

4. Is damaged or otherwise inoperable;

5. Does not adequately isolate the hydrant; or

6. Is determined to be absent, the Contractor shall immediately notify the CO and COR. The affected hydrant replacement shall not proceed until the condition has been evaluated and the Contractor has received authorization from the Government to proceed.

G. Additional Work: Discovery of a missing, damaged, inaccessible, leaking, or inoperable control valve shall not authorize the Contractor to repair, replace, install, excavate for, or otherwise modify the valve or water distribution/fire protection system beyond the existing Contract requirements. Any additional work shall require authorization from the Contracting Officer prior to performance.

H. Documentation: The Contractor shall document the location and operational verification of each hydrant-specific control valve and submit the required documentation to the COR prior to the associated hydrant replacement. Documentation shall identify, at a minimum:

1. Hydrant location.

2. Associated control valve location.

3. Date of verification.

4. Operational condition of the valve.

5. Whether the valve successfully isolated the associated hydrant.

6. Any deficiencies or unusual conditions identified during verification.

7. Name and company of the individual performing the verification.

Before requesting a shutdown, have on site all personnel, replacement hydrants, fittings, restraints, gaskets, adapters, tools, equipment, and other materials reasonably necessary to complete the planned work and restore service.

D. Shutdown Duration

Water-system shutdowns associated with fire hydrant replacement shall be performed during overnight hours only. The approved shutdown window for this project is 10:00 p.m.

through 6:00 a.m.

The Contractor shall plan, sequence, and staff the work so that the affected water system is fully restored to service no later than 6:00 a.m.

Prior to initiating a shutdown, the Contractor shall have on site all personnel, equipment, replacement hydrant, fittings, restraints, gaskets, adapters, tools, and other materials necessary to complete the planned work and restore the system within the approved shutdown window.

If an unforeseen condition is encountered that may prevent restoration of water service by 6:00 a.m., the Contractor shall immediately notify the CO and COR and take all reasonable measures necessary to safely restore the system to service.

No extension of the approved shutdown window is permitted without Government authorization.

No more than one (1) project hydrant shall be intentionally taken out of service at a time, unless otherwise authorized.

E. Fire-Protection Impairment

Coordinate all fire-protection impairments with the COR and National Mall and Memorial Parks Safety Office. Water shutdown procedures and planning MUST be approved by the parks safety office.

If an unforeseen condition prevents restoration within the approved shutdown period, immediately notify the CO and COR.

ITEM 3 – CONTRACTOR'S USE OF PREMISES

3.1 Conduct of Operations

Conduct operations in accordance with applicable NPS and Park requirements.

Provide the CO and COR current telephone numbers, email addresses, and 24-hour emergency contact information.

No advertising or unauthorized signage is permitted.

Conduct operations to minimize inconvenience to the public and Park operations.

At the WWII Memorial, maintain safe pedestrian circulation unless a temporary route closure is specifically authorized.

Prevent unauthorized public access to active construction areas and excavations.

3.2 On-Site Work Hours

Work shall generally be performed between 6:00 a.m. and 6:00 p.m., Monday through Friday, except when otherwise indicated.

3.3 Contractor Use of Site

Limit construction operations to approved work, access, and staging areas.

Keep driveways, access roads, and entrances available to Government personnel and emergency vehicles.

At the WWII Memorial, use protective mats or other approved means when equipment must cross turf or finished surfaces.

Government-furnished water and electrical service, if available for Contractor use, shall be coordinated with and approved by the COR prior to use. Unless specifically authorized, the Contractor shall provide temporary utilities necessary for performance of the Work.

Security and Protection Facilities

The Contractor shall furnish, install, maintain, and remove temporary construction fencing and barriers around all active excavation areas and other construction areas that present a hazard to the public, NPS employees, or other personnel.

Temporary construction fencing shall completely enclose open excavations whenever the excavation is unattended and shall remain in place until the excavation has been backfilled or otherwise made safe.

Fencing shall be a minimum of 6 feet in height, securely supported, and maintained in an upright, stable condition. Fence panels and supports shall be installed so they do not create additional trip, impalement, or pedestrian hazards. Temporary fencing shall not be attached to historic structures, memorial features, trees, light poles, signs, or other NPS property unless specifically authorized.

Provide lockable gates or other controlled access points as necessary for Contractor personnel and equipment. Gates shall remain closed and secure whenever the work area is unattended.

The Contractor shall provide additional barricades, warning signs, lighting, covers, or other protective measures where required by site conditions, the approved Accident Prevention

Plan, OSHA requirements, or as directed by the CO/COR.

At the World War II Memorial, fencing placement shall be coordinated with the COR to maintain safe pedestrian circulation and minimize impacts to visitors while completely separating the public from excavation and construction activities.

The Contractor shall inspect temporary fencing and protective barriers daily and following severe weather, high winds, or other events that could affect their stability. Damaged, displaced, or inadequate fencing shall be corrected immediately.

All temporary fencing, supports, anchors, barriers, and associated materials shall be removed upon completion of the work, and surfaces disturbed by their installation shall be restored to their preconstruction condition at no additional cost to the Government.

3.4 Storage and Staging

Confine materials and equipment to approved staging areas.

Coordinate exact staging locations during the preconstruction process.

Security of Contractor equipment and materials is the Contractor's responsibility.

3.5 Hauling and Disposal

The Contractor is responsible for legal transportation and disposal of materials removed from the project.

Do not use Park dumpsters.

3.6 Waste Removal and Housekeeping

Maintain both project sites in a neat, orderly, and safe condition.

Remove construction debris regularly.

Recycle construction waste to the highest practical extent and provide disposal/recycling documentation when required.

3.7 Occupancy

EPMY will remain an active Government facility.

The WWII Memorial will remain open to public visitation except for localized restrictions specifically authorized for construction.

3.8 Photo Documentation

Provide dated digital photographs documenting:

1. Existing hydrants and surrounding areas.

2. Existing sidewalks/pavement/landscaping.

3. Utility markings.

4. Excavations.

5. Exposed existing hydrant piping and connections.

6. New fittings, restraints, and connections before backfill.

7. Installed hydrants before backfill.

8. Bollard excavations.

9. Bollard foundations before concrete placement.

10. Installed bollards.

11. Sidewalk restoration.

12. Landscape restoration.

13. Completed hydrants and final site conditions.

Subsurface work shall also be documented on the as-built drawings.

ITEM 4 – COMMENCEMENT, PROSECUTION, AND COMPLETION

The Contractor shall commence and complete work in accordance with the Contract Documents.

Long-lead procurement and delivery times shall be incorporated into the Contractor's construction schedule.

ITEM 5 – EXAMINATION OF SITE

Offerors are urged to inspect both project locations before submitting offers and become familiar with observable conditions affecting performance.

ITEM 6 – APPLICABLE CODES AND STANDARDS

Comply with applicable requirements of the Contract Documents and governing codes and standards.

Applicable references include, where applicable:

• ANSI/AWWA C502 – Dry-Barrel Fire Hydrants.

• NFPA 24 – Standard for the Installation of Private Fire Service Mains and Their Appurtenances, when connected to an NPS-owned/private fire-service system.

• NFPA 291 – Recommended Practice for Fire Flow Testing and Marking of Hydrants, where applicable.

• NFPA 241 – Standard for Safeguarding Construction, Alteration, and Demolition Operations.

• Applicable current DC Water Standard Specifications and Standard Details, where the hydrant is connected to or part of the DC Water distribution system.

• Applicable OSHA construction requirements.

• Manufacturer's written installation requirements.

• Applicable NPS requirements.

• Requirements of the Authority Having Jurisdiction.

Where requirements conflict, notify the CO and COR before proceeding.

Where the Work interfaces with a utility-owned distribution system, comply with applicable utility requirements in addition to NPS-specific criteria and the referenced NFPA standards.

Notify the CO and COR of any conflict before proceeding.

ITEM 7 – ACCIDENT PREVENTION

Comply with Contracting's Division 01 Accident Prevention requirements.

Provide a site-specific Accident Prevention Plan addressing, at minimum:

• Excavation.

• Underground utilities.

• Water-system work.

• Fire-protection impairment.

• Open excavations.

• Public/pedestrian protection.

• Heavy equipment.

• Concrete work.

• Bollard installation.

• Traffic exposure.

• Historic-resource protection.

• Emergency procedures.

ITEM 8 – PRECONSTRUCTION CONFERENCE

Comply with Contracting's Division 01 preconstruction requirements.

Project-specific coordination shall include:

• Construction schedule.

• Technical submittals.

• Hydrant procurement.

• Utility locations.

• Water shutdowns.

• Fire-protection impairment.

• Staging/access.

• Public protection.

• WWII resource protection.

• Archeological monitoring, if applicable.

• Testing.

• Restoration.

• Permits and AHJ requirements.

ITEM 9 – SUBMITTALS

All submittals shall follow the Contracting-established CM-16 submittal process.

Fire Protection Submittals and Closeout Documentation:

1. Documentation identifying the hydrant-specific underground control valve(s) and verification of operational condition prior to hydrant replacement.

2. Product data and manufacturer information for replacement hydrants and associated fire-service components.

3. NPS Underground Piping Certification Form.

4. NPS Hydrant Flow Testing Form, or Contractor-provided equivalent approved in advance by the NPS Fire Code Official.

5. Completed flow-test results for each replacement hydrant.

6. Documentation of the NPS Fire Code Official-approved hydrant flow-capacity marking.

7. Any additional inspection, testing, or certification documentation required by the NPS Fire Code Official.

Materials requiring approval shall not be ordered or incorporated into the work before required review.

9.1 Fire Hydrant Submittals

Submit:

1. Manufacturer and model.

2. ANSI/AWWA C502 compliance documentation.

3. Pressure rating.

4. Main valve opening.

5. Inlet size/type.

6. Hose nozzle sizes.

7. Pumper nozzle size.

8. Thread configuration.

9. Operating direction.

10. Operating-nut configuration.

11. Bury depth.

12. Breakaway/traffic-flange details.

13. Installation instructions.

14. Fittings.

15. Restraints.

16. Gaskets/adapters.

17. Coating system/color.

18. Manufacturer warranty.

9.2 Bollard Submittals

Submit:

1. Fabrication/shop drawings.

2. Steel pipe material.

3. Pipe diameter and wall/schedule.

4. Overall dimensions.

5. Above- and below-grade dimensions.

6. Foundation details.

7. Concrete information.

8. Proposed placement.

9. Black steel coating system.

10. Yellow protective sleeve product data.

9.3 Concrete Submittals

Submit:

1. Concrete mix design.

2. Aggregate information.

3. Material certifications.

4. Supporting test reports.

5. Finishing method.

6. Curing method.

7. Mock-up information.

ITEM 10 – TEMPORARY SERVICES

The Contractor shall provide temporary services, equipment, tools, barriers, fencing, pedestrian controls, and skilled labor required for its means and methods unless specifically identified as Government-furnished.

ITEM 11 – PROJECT CLOSEOUT

Comply with Contracting's Division 01 final inspection, punch-list, final acceptance, Release of Claims, and closeout requirements.

Provide:

1. Hydrant manufacturer/model information.

2. O&M documentation.

3. Manufacturer warranties.

4. Testing reports.

5. Flow-test reports.

6. Pressure/leakage reports.

7. Flushing/disinfection records.

8. Approved coating information.

9. Concrete documentation.

10. Construction photographs.

11. As-built drawings showing final hydrant locations and underground connections.

12. Bollard product/installation information.

13. Permit and inspection closeouts, where applicable.

The construction warranty shall be one year from final acceptance.

ITEM 12 – DEFINITION OF CONTRACT LINE ITEMS

CLIN 0001 – WWII Memorial Fire Hydrant Replacement

Provide complete replacement of one (1) existing fire hydrant at the WWII Memorial, including demolition, excavation, new hydrant and appurtenances, connections, testing, backfill, two protective steel bollards with yellow sleeves, sidewalk restoration, landscape restoration, coatings, documentation, and all incidental work necessary for a complete installation.

CLIN 0002 – EPMY Fire Hydrant Replacement

Provide complete replacement of one (1) existing fire hydrant at EPMY, including demolition, excavation, new hydrant and appurtenances, connections, testing, backfill, concrete and landscape restoration as applicable, coatings, documentation, and all incidental work necessary for a complete installation.

Payment shall be based upon the applicable contract price and accepted percentage of completion.

TECHNICAL REQUIREMENTS

FIRE HYDRANTS AND APPURTENANCES

PART 1 – GENERAL

1.1 Description

Provide two (2) complete replacement fire hydrant installations:

• One (1) at the WWII Memorial.

• One (1) at EPMY.

1.2 Hydrant Standard

New fire hydrants shall be new, commercial-grade, dry-barrel, compression-type fire hydrants manufactured for fire-protection service.

Hydrants shall comply with ANSI/AWWA C502.

Hydrant installation and associated underground fire-service work shall comply with the most recent edition of NFPA 24 and NPS-specific criteria.

Where connected to the DC Water distribution system, applicable DC Water specifications and details shall apply.

All fire hydrant replacement work, associated underground fire service work, inspection, testing, and acceptance shall be performed in accordance with NPS-specific criteria and the most recent editions of NFPA 24, Standard for the Installation of Private Fire Service Mains and Their Appurtenances, and NFPA 291, Recommended Practice for Fire Flow Testing and Marking of Hydrants.

Where NPS-specific criteria are more restrictive than the referenced standards, the NPS requirements shall govern.

Contractor shall coordinate required inspections, testing, documentation, and acceptance with the COR and the NPS Fire Code Official.

PART 2 – PRODUCTS

2.1 Fire Hydrants (Red)

Unless different requirements are established by the existing system or AHJ, hydrants shall:

1. Conform to ANSI/AWWA C502.

2. Be dry-barrel, compression-type.

3. Be traffic/breakaway design.

4. Have minimum 5-1/4-inch main valve opening.

5. Have two (2) 2-1/2-inch hose connections.

6. Have one (1) 4-1/2-inch pumper connection.

7. Have threads compatible with responding fire-department equipment.

8. Open counterclockwise unless otherwise required.

9. Have nominal 6-inch mechanical-joint inlet, unless existing conditions require another approved connection.

10. Be rated for existing system pressure.

11. Be suitable for required bury depth.

12. Include all caps, chains, operating components, gaskets, hardware, and required accessories.

The Contractor shall verify existing system compatibility before procurement.

PART 3 – EXECUTION

3.1 Removal

Excavate and expose existing hydrants and connections.

Remove designated hydrants without unnecessary damage to piping, utilities, surfaces, or facilities intended to remain.

3.2 Installation

Install hydrants:

• Plumb.

• At proper finished-grade elevation.

• With breakaway flange properly positioned.

• Properly oriented.

• Properly supported and restrained.

• Without improper stress on existing piping.

• With unobstructed access to operating nuts and connections.

Provide all fittings, restraints, gaskets, adapters, hardware, bedding, and incidental materials required for complete installation.

Do not backfill connections until required inspection, testing as applicable, and photographic documentation have been completed.

3.3 Backfill and Compaction

Provide suitable backfill free from debris, organic matter, frozen material, or other unsuitable material.

Place and compact backfill in lifts sufficient to prevent future settlement.

Correct settlement resulting from Contractor operations.

3.4 Testing and Commissioning

Test completed installations in accordance with applicable Contract Documents, manufacturer requirements, governing standards, and AHJ requirements.

Testing shall include, as applicable:

• Operational testing.

• Leakage testing.

• Pressure testing.

• Flushing.

• Flow testing.

• Valve verification.

• Hydrant drainage verification.

• Disinfection/water-quality procedures where required.

Submit written test results.

Correct and retest deficient Contractor work at no additional cost to the Government.

PROTECTIVE STEEL BOLLARDS – WWII MEMORIAL

PART 1 – GENERAL

Provide two (2) permanent protective bollards at the WWII Memorial replacement hydrant.

Install two bollards while maintaining a 3-foot clearance of free space around the circumference around each hydrant.

Bollards shall protect the hydrant from accidental vehicle impact while maintaining access for emergency operation, inspection, testing, and maintenance.

FIRE DEPARTMENT ACCESS AND GUARD POST REQUIREMENTS

Protective barriers and guard posts shall be installed so they do not impede fire department access to or operation of the fire hydrant.

A minimum of three (3) feet of clear space shall be maintained around the circumference of the fire hydrant.

Guard posts shall comply with the requirements of IFC Section 312.2, including the following:

1. Guard posts shall be constructed of steel not less than 4 inches in diameter and shall be concrete filled.

2. Guard posts shall be set not less than 3 feet deep in a concrete footing not less than 15 inches in diameter.

3. The top of each guard post shall extend not less than 3 feet above finished grade.

4. Guard posts shall be located not less than 3 feet from the protected object.

Final guard-post placement shall maintain the required hydrant clearances and shall not interfere with hydrant outlets, operating nut, valve access, hose connections, fire department operations, pedestrian circulation, or other required access.

PART 2 – PRODUCTS

2.1 Steel Bollards

Each bollard shall:

1. Be minimum 6-inch nominal diameter Schedule 40 steel pipe.

2. Extend 36 inches minimum above finished grade.

3. Extend 36 inches minimum below finished grade.

4. Be installed in a concrete foundation having a minimum 18-inch diameter.

5. Be completely surrounded by concrete throughout the embedded portion.

6. Be completely filled internally with concrete.

7. Have a permanently sealed rounded or domed top.

8. Have no exposed sharp edges or projections.

9. Receive a corrosion-resistant black exterior coating suitable for permanent outdoor exposure.

Foundation and bollard-fill concrete shall have a minimum compressive strength of 6,000 psi at 28 days.

2.2 Yellow Protective Sleeves

Provide one protective sleeve for each steel bollard.

Sleeves shall

1. Be manufactured specifically for exterior bollard protection.

2. Be constructed of durable, UV-resistant polyethylene, HDPE, or comparable exterior-grade thermoplastic.

3. Be factory-colored yellow.

4. Be sized to provide a secure fit over the specified bollard.

5. Cover the exposed vertical portion of the steel bollard.

6. Resist ultraviolet degradation, moisture, weathering, cracking, and fading.

7. Be removable and replaceable without removing the permanent steel bollard.

Field-painted plastic sleeves are not acceptable.

Verify underground utilities and hydrant piping before bollard excavation.

Bollards shall not interfere with:

• Hose connections.

• Pumper connection.

• Operating nut.

• Breakaway assembly.

• Inspection/testing.

• Maintenance.

• Pedestrian circulation.

• Accessible routes.

• Hydrant piping.

• Underground utilities.

Install bollards plumb and permanently embedded.

Surface-mounted bollards are not permitted unless authorized through the contract.

Where underground conditions conflict with the specified installation, stop affected work and notify the CO and COR before modifying the location, embedment, or foundation.

WWII MEMORIAL CONCRETE SIDEWALK RESTORATION

PART 1 – GENERAL

Sidewalk concrete restoration at the WWII Memorial shall utilize the NAMA-approved sidewalk concrete mix design previously established for Park sidewalk work.

The Contractor shall submit the approved mix design and supporting material certifications/test documentation through the required CM-16 process before placement.

No aggregate substitution or modification to the approved mix design is permitted without Government authorization.

PART 2 – MOCK-UP

Before production placement, construct a sidewalk mock-up demonstrating:

1. Concrete mixture.

2. Aggregate.

3. Color.

4. Texture.

5. Aggregate exposure.

6. Joint appearance.

7. Finishing method.

8. Workmanship.

9. Curing method.

Once accepted, the mock-up shall establish the minimum appearance and workmanship standard for production restoration.

PART 3 – RESTORATION

Restore disturbed sidewalk to match adjacent existing sidewalk in:

• Material.

• Thickness.

• Elevation.

• Joint configuration.

• Texture.

• Color.

• Aggregate exposure.

• Finished appearance.

Saw cuts shall be straight and neat.

Replace complete panels where necessary to avoid irregular partial panels or unacceptable patchwork.

Finished surfaces shall not create:

• Ponding.

• Depressions.

• Raised edges.

• Abrupt elevation changes.

• Trip hazards.

Integrate bollard foundations into the sidewalk restoration to provide a clean, uniform finished installation.

3.5 Post-Installation Hydrant Flow Testing

Following completion of installation and after the water system has been fully restored to normal operating conditions, the Contractor shall perform a post-installation fire hydrant flow test on each newly installed hydrant.

Hydrant flow testing shall be performed in accordance with applicable requirements and procedures of NFPA 291, Recommended Practice for Fire Flow Testing and Marking of Hydrants, and requirements of the Authority Having Jurisdiction (AHJ).

The testing shall determine and document the available flow and pressure characteristics of each newly installed hydrant.

At a minimum, the Hydrant Flow Test Report shall document:

1. Hydrant location and identification.

2. Date and time of test.

3. Static pressure, in PSI.

4. Residual pressure, in PSI.

5. Flow/pitot pressure used to determine discharge.

6. Outlet/nozzle size used during testing.

7. Calculated flow rate in gallons per minute (GPM).

8. Test equipment used.

9. Name and company of the individual performing the test.

The Contractor shall submit a separate Hydrant Flow Test Report for each newly installed hydrant to the CO and COR. Testing and submission of acceptable test reports shall be completed prior to final acceptance.

3.6 HYDRANT FLOW-CAPACITY MARKING

Following successful flow testing, the Contractor shall mark the flow capacity of each replacement hydrant in a manner approved by the NPS Fire Code Official.

Flow-capacity markings shall be based upon the results of the completed hydrant flow test and shall not be installed until the testing results have been reviewed and the marking method has been approved by the NPS Fire Code Official.

The Contractor shall provide all labor and materials necessary to complete the approved marking.

The Contractor shall not independently select a color, marking system, or flow-capacity classification. Final marking method, location, color, and configuration shall be as approved by the NPS Fire Code Official.

Turf Protection

The Contractor shall protect all existing turf areas within and adjacent to the project limits in accordance with the NAMA Turf Protection Plan. Refer to appendix for requirement

Existing turf outside the approved limits of disturbance shall be protected from damage throughout construction. Contractor personnel, vehicles, equipment, materials, excavated soils, spoil piles, pallets, dumpsters, and other construction-related activities shall not be permitted on protected turf except where specifically authorized by the Government and in accordance with the Turf Protection Plan.

Where construction access across turf is necessary and approved, the Contractor shall provide and maintain temporary turf protection measures as required by the Turf Protection Plan. Protection shall be installed prior to equipment or vehicle access and shall remain in place for the duration of the activity requiring such access.

The Contractor shall minimize rutting, soil compaction, displacement of soil, damage to turf, and disruption of existing grades and drainage patterns.

Turf protection materials shall be maintained in a safe and serviceable condition and shall not create trip hazards, impede drainage, or damage adjacent sidewalks, curbs, landscaping, irrigation systems, utilities, or other existing features.

Turf protection measures shall be removed when no longer required. Areas damaged as a result of Contractor operations, including rutting, compaction, turf loss, or disturbance outside the approved limits of work, shall be restored by the Contractor in accordance with the Turf Protection Plan and to the satisfaction of the COR at no additional cost to the Government.

LANDSCAPE RESTORATION

Restore landscaped areas disturbed by construction to their preconstruction condition and in accordance with the NAMA Turf Protection Plan, including applicable soil decompaction, topsoil, turf, mulch, grading, and plant materials.

Restored areas shall match adjacent existing conditions and shall be properly graded to maintain existing drainage patterns and prevent settlement, erosion, ponding, or depressions.

Correct settlement, erosion, soil compaction, turf failure, or other deficiencies resulting from Contractor operations at no additional cost to the Government.

Damage to turf or landscaped areas outside the approved limits of disturbance resulting from Contractor operations shall also be restored at no additional cost to the Government.

CONCRETE REMOVAL AND REPLACEMENT

PART 1 – GENERAL

1.1 DESCRIPTION

The Contractor shall furnish all labor, supervision, materials, equipment, tools, saw cutting, demolition, excavation, disposal, subgrade preparation, aggregate base repair/replacement, compaction, forming, reinforcement where applicable, concrete placement, finishing, jointing, curing, protection, testing, and incidental work necessary to provide complete concrete removal and replacement associated with the fire hydrant replacement work.

Approximate concrete replacement quantities are:

A. World War II Memorial: 110 square feet

B. East Potomac Maintenance Yard: 200 square feet

Total Estimated Concrete Replacement: 310 square feet.

The Contractor shall field verify existing conditions, concrete thickness, base conditions, existing joints, grades, drainage, and other conditions affecting the work prior to demolition.

Concrete replacement shall provide a complete, stable, durable finished surface matching adjacent existing conditions. Refer to appendix for requirement.

PART 2 – MATERIALS

2.1 CONCRETE

Concrete shall conform to the concrete mix requirements. Refer to appendix for requirement.

Concrete at the WWII Memorial shall comply with the NAMA-approved exposed aggregate concrete mix and the additional requirements of WWII Memorial Concrete Sidewalk Restoration.

No substitution or modification of an approved concrete mix, aggregate, admixture, or other component shall be permitted without Government authorization.

2.2 AGGREGATE BASE

Aggregate base material used beneath replacement concrete shall be clean, durable, well-graded material suitable for supporting concrete pavement and shall be free of organic material, debris, frozen material, excessive fines, and other deleterious substances.

Aggregate base shall be compatible with the existing base construction and suitable for achieving the required compaction and finished concrete elevations.

2.3 REINFORCEMENT

Prior to demolition, the Contractor shall determine whether existing concrete contains welded wire reinforcement, reinforcing bars, dowels, or other reinforcement.

Where reinforcement is encountered, replacement concrete shall provide reinforcement matching the existing type, size, spacing, and configuration. Refer to appendix for requirement.

Existing reinforcement intended to remain shall be protected from damage.

3.1 EXISTING CONDITION VERIFICATION

Before concrete removal, document existing conditions, including:

1. Existing concrete limits.

2. Existing joints.

3. Concrete thickness.

4. Surface elevations and slopes.

5. Existing cracking or deterioration.

6. Adjacent concrete condition.

7. Existing drainage patterns.

8. Existing reinforcement where observable.

9. Existing base/subgrade conditions when exposed.

Notify the COR of conditions materially different from those reasonably anticipated before proceeding with affected replacement work.

3.2 SAW CUTTING AND CONCRETE REMOVAL

Saw cut existing concrete at the limits of removal to provide straight, clean edges and minimize damage to concrete designated to remain.

Where practical, concrete removal shall extend to existing joints.

Where excavation affects a portion of an existing concrete panel, the Contractor shall remove and replace the complete affected panel where necessary to avoid irregular patches, feathered edges, or unacceptable partial-panel repairs.

Perform demolition in a manner that prevents cracking, chipping, spalling, undermining, or other damage to adjacent concrete designated to remain.

Concrete damaged outside the approved limits of removal as a result of Contractor operations shall be removed and replaced by the Contractor at no additional cost to the Government.

Remove demolished concrete and debris from NPS property and legally dispose of the material.

3.3 SUBGRADE INSPECTION AND REPAIR

Following concrete removal and completion of hydrant excavation, piping, backfill, and associated underground work, inspect the exposed subgrade.

The subgrade shall be firm, stable, uniformly compacted, and capable of supporting the aggregate base and replacement concrete without settlement or displacement.

Remove soft, pumping, unstable, saturated, contaminated, organic, or otherwise unsuitable subgrade material encountered within the limits of the concrete replacement.

Replace unsuitable material with approved suitable fill or aggregate material placed and compacted in controlled lifts.

Do not place aggregate base or concrete over:

• Frozen material.

• Mud.

• Standing water.

• Loose or uncompacted fill.

• Organic material.

• Unstable subgrade.

• Construction debris.

If unsuitable conditions extend beyond those reasonably associated with the Contractor's excavation or backfill operations, notify the CO and COR before performing work outside the established scope.

3.4 HYDRANT EXCAVATION BACKFILL

Backfill associated with hydrant and underground piping work shall be placed and compacted before construction of the concrete base.

Backfill shall be placed in controlled lifts and compacted sufficiently to provide a stable foundation and prevent future settlement.

Particular attention shall be given to compaction immediately adjacent to hydrant piping, fittings, valves, and other underground appurtenances without damaging those components.

The Contractor shall be responsible for settlement resulting from inadequate placement or compaction of Contractor-installed backfill.

3.5 EXISTING AGGREGATE BASE

Following removal of existing concrete, inspect the existing aggregate base.

Existing aggregate base may remain only where it is:

• Stable.

• Properly compacted.

• Free of contamination.

• Free of excessive moisture.

• At the proper elevation.

• Capable of supporting the replacement concrete.

Loose, disturbed, contaminated, displaced, saturated, or otherwise unsuitable aggregate base shall be removed and replaced.

Existing base disturbed by excavation, utility work, hydrant replacement, demolition, or Contractor operations shall be reconstructed before concrete placement.

3.6 AGGREGATE BASE REPAIR AND REPLACEMENT

Where existing aggregate base has been removed or disturbed, provide new aggregate base sufficient to restore the concrete foundation to the required elevation and condition.

Place aggregate base in uniform lifts and compact each lift before placement of subsequent material.

Finished aggregate base shall be:

1. Firm and uniformly compacted.

2. Smooth and properly graded.

3. Free of loose material.

4. At the proper elevation to accommodate the required concrete thickness.

5. Constructed to maintain the required finished surface grades and drainage.

Aggregate base shall extend across the entire area of replacement concrete where the existing base has been removed, disturbed, or determined unsuitable.

The Contractor shall not use additional concrete thickness as a substitute for properly repairing or replacing an unsuitable aggregate base.

3.7 COMPACTION

Subgrade, backfill, and aggregate base shall be compacted using equipment appropriate for the material, location, and proximity to existing utilities.

Compaction operations shall not damage existing or newly installed hydrants, piping, fittings, valves, utilities, structures, or adjacent improvements.

Areas inaccessible to larger compaction equipment shall be compacted using appropriate smaller mechanical equipment.

The Contractor shall correct soft spots, pumping, rutting, displacement, or other evidence of inadequate compaction before concrete placement.

Concrete shall not be placed until the supporting base is stable and acceptable for placement.

3.8 CONCRETE THICKNESS

Replacement concrete shall be at 6 inches thick

Replacement concrete shall not be feathered to less than the required thickness at existing concrete interfaces.

3.9 FORMS

Forms shall be straight, rigid, properly supported, and securely set to the required lines and grades.

Forms shall remain stable during concrete placement and finishing.

Set forms to produce finished concrete matching adjacent elevations, slopes, drainage patterns, and joint alignment.

3.10 JOINTS

Match existing adjacent joint layout, spacing, alignment, width, depth, and appearance to the extent applicable.

New joints shall align with existing joints where practical.

Provide isolation/expansion joints where replacement concrete abuts fixed structures or where required to match existing construction.

Joints shall be straight, uniform, and continuous.

Random cracking caused by improper joint placement, timing, curing, or workmanship shall be subject to rejection.

3.11 CONCRETE PLACEMENT

Do not place concrete until:

1. Underground hydrant work requiring inspection has been inspected.

2. Required underground piping testing/certification applicable before concealment has been completed.

3. Backfill has been properly placed and compacted.

4. Subgrade and aggregate base preparation is complete.

5. Forms and reinforcement, where applicable, are properly installed.

6. Required concrete submittals have been approved.

Place concrete in a manner that prevents segregation and provides complete consolidation.

Do not place concrete on frozen, muddy, unstable, excessively wet, or standing-water-covered surfaces.

3.12 GRADES AND DRAINAGE

Replacement concrete shall match existing adjacent elevations and maintain existing drainage patterns unless otherwise indicated.

Finished concrete shall positively drain and shall not create:

• Ponding.

• Birdbaths.

• Depressions.

• Raised edges.

• Abrupt elevation changes.

• Trip hazards.

• Drainage toward hydrant components where such drainage would create an adverse condition.

Transitions between existing and replacement concrete shall be smooth and flush.

3.13 SURFACE FINISH

Unless otherwise specified, finish replacement concrete to match the texture and appearance of adjacent existing concrete.

At the WWII Memorial, the requirements of WWII Memorial Concrete Sidewalk Restoration, including exposed aggregate, approved concrete mix, mock-up, color, texture, and aggregate exposure, shall apply in addition to this section. Your existing WWII section already requires matching material, thickness, elevation, joints, texture, color, aggregate exposure, and finished appearance.

3.14 CURING AND PROTECTION

Cure newly placed concrete in accordance with the approved concrete requirements.

Protect new concrete from:

• Pedestrian traffic.

• Vehicle traffic.

• Construction equipment.

• Vibration.

• Weather.

• Contamination.

• Staining.

• Vandalism.

• Premature loading.

Provide barriers, barricades, and other protection necessary to prevent public access until the concrete has developed sufficient strength for its intended use.

3.15 BOLLARD INTERFACE – WWII MEMORIAL

Coordinate concrete replacement with installation of the two protective bollards at the WWII Memorial.

Bollards shall remain plumb and at the specified location and elevation during concrete placement.

Concrete surrounding bollards shall be neatly finished and shall not contain gaps, depressions, excessive cracking, or other defects.

Finished surfaces surrounding bollards shall not create ponding or trip hazards.

Bollard foundations shall not interfere with the required concrete thickness, aggregate base, hydrant piping, underground utilities, or accessible pedestrian routes.

3.16 CONCRETE DAMAGED BY CONTRACTOR OPERATIONS

Concrete outside the planned limits of replacement that is cracked, chipped, spalled, stained, undermined, displaced, or otherwise damaged by Contractor operations shall be repaired or replaced as directed by the CO/COR at no additional cost to the Government.

Repairs that result in visually unacceptable patchwork or do not restore the structural and functional condition of the existing concrete will not be accepted.

3.17 ACCEPTANCE

Completed concrete shall be uniform, stable, properly finished, and free of unacceptable defects.

Concrete may be rejected for conditions including:

• Cracking.

• Spalling.

• Honeycombing.

• Segregation.

• Settlement.

• Improper jointing.

• Improper elevation.

• Ponding.

• Trip hazards.

• Unacceptable surface finish.

• Improper aggregate exposure.

• Damage to adjacent construction.

• Failure to match specified or approved appearance requirements.

Rejected work shall be removed and replaced as directed at no additional cost to the Government.

TECHNICAL REQUIREMENTS – UNDERGROUND PIPING CERTIFICATION

The Contractor shall complete all required inspection, testing, and certification of underground fire service piping and appurtenances associated with the Work.

The Contractor shall complete and submit the NPS-provided underground piping certification form for the applicable work. The completed certification shall be submitted to the COR and NPS Fire Code Official prior to final acceptance.

Required underground…