A04_GATE_322282_CONSTRUCTION_SOW_4_11_2024.pdf

GATEWAY NATIONAL RECREATION AREA

BROOKLYN, NEW YORK

GATE 322282

PERFORM WATER INFILTRATION MITIGATION

AT HISTORIC RYAN VISITOR CENTER, JABA

Request for Proposal (RFP)

NATIONAL PARK SERVICE (NPS)

1.0 PROJECT INTRODUCTION

Project Identification: GATE 322282

Project Title: Perform Water Infiltration Mitigation at Historic Ryan Visitor Center, JABA

In accordance with terms and conditions of the Contract, the Contractor shall perform the work of this Request for Proposal (RFP) for the National Park Service (NPS) as described below.

1.1 LOCATION

This project is located at Gateway National Recreational Area, Floyd Bennett Field in the Jamaica Bay Unit.

1.2 BACKGROUND

The Ryan Visitor Center at Floyd Bennett Field was constructed in 1930. It was originally known as the Administration Building for Floyd Bennett Field, which was the first municipal airport in New York City. The Ryan Visitor Center is a steel framed building with a masonry building envelope, and this envelope has consistently faced water infiltration issues throughout its service life. This facility is a contributing structure in the Floyd Bennett Field Historic District in the National Register of Historic Places.

1.3 DESCRIPTION OF WORK

The work includes examining the nature of the existing mortar, installing water infiltration measures on the parapet, and replacing existing corroded steel lintels with new galvanized steel lintels.

1.4 DATA AND MATERIALS PROVIDED BY NPS

N/A

2.0 PROJECT REQUIREMENTS

2.1 SCOPE OF WORK

1. MORTAR PROBING PLAN, TESTS, AND REPORT

A. Create a plan to probe the existing mortar holding the bricks and coping stones at the

Ryan Visitor Center. The purpose of the plan is to determine the original type of mortar used in the facility. The plan shall include method of probing mortar, the proposed probe locations, method of repairing holes in the mortar, and the method of testing the mortar to determine its content. A minimum of seven probes in the mortar between the brick masonry and three probes in the mortar between the cast coping stones shall be carried out.

B. Submit plan to National Park Service (NPS) Contracting Officer Representative for approval. Contractor shall allow at least 15 business days for NPS review.

C. After receiving approval for the plan, contractor shall carry it out. Repair probe holes.

D. Contractor shall prepare a report indicating the makeup of the mortar probes and a discussion about what is the original and most appropriate mortar to use in the repair.

Portland cement is not the original mortar used in the masonry, and it shall not be specified as the repair mortar. The report shall be prepared by an entity with at least five years of documented experience in historic preservation.

2. RESET CLOCK ABOVE MAIN ENTRANCE

Existing clock above the main entrance door is crooked. Remove and reset the clock in the same location. When resetting clock, it shall be mounted so that the number 12 is at the top. The number 12 vertically directly above the number 6. Photograph existing mounting detail. Use existing mounting penetrations as much as feasible. Submit resetting mounting detail for approval by National Park Service.

3. PERFORM WATER INFILTRATION MITIGATION ON COPING ON TOP OF

PARAPET

A. The location of the dovetail under coping flashing installation shall be on all sections of parapet except the area indicated on the northeast elevation adjacent to the traffic control tower. The coping stones adjacent to the stair roofs next to the tower shall not be moved. The RVC is 182 feet by 74 feet. The total length of parapet to receive flashing is approximately 460 lineal feet. Existing width of brick parapet is 12 inches. Dimensions of existing cast coping stones on top of parapet are approximately 46 inches long, 13-3/4 inches wide, and 6 inches deep.

Southwest Facing Elevation

Northeast Facing Elevation

Side Elevations

RVC Plan View

B. On areas indicated where the Dovetail Undercoping Flashing shall be installed, remove existing cast coping stones from parapet. Clean mortar from surfaces of existing coping stones and existing parapet.

C. There is an antenna on the roof adjacent to the parapet on the northeast façade.

Create work plan so that this antenna is not affected by work.

D. Install Dovetail Under Coping Flashing.

Material Specifications:

Flashing shall use special deformations in the flashing to bond to the mortar and form keys in all directions, which allow for thermal expansion and contraction.

The sheets shall require no soldering.

Dovetail design shall have skewed ribs every 3″, creating 3-dimensional integral bonding with the mortar.

The maximum section length shall be 44″.

Material shall be Freedom Gray Copper.

Thickness shall be 20 gauge on flat surfaces and 16 gauge on curved surfaces.

Flashing shall have a double drip hem. Double drip hem shall be 1/2” long.

Installation Specifications:

There shall be a layer of bedding mortar between Dovetail Under Coping flashing and brick masonry. Bedding mortar shall match the mortar that is appropriate for this location according to the mortar probing report.

Adjacent pieces of flashing shall overlap approximately 3 inches and not overlapping any crimps.

To connect adjacent pieces of flashing, use a one-part non-skinning butyl metal flashing sealant. Apply three beads no thinner than ¼” diameter perpendicular to line of parapet. Apply flashing tape over the lap joint.

No Dovetail Under Coping flashing shall be installed in the area indicated on the northeast elevation because the roofs of the stairs intersect with the parapet in this area.

E. Apply bedding mortar on top of Dovetail Under Coping flashing and re-set existing cast coping stones. Set mortar joints between coping stones to leave space for lead T-caps.

F. Install stone flashing on the top, front, and back of the mortar joints between the coping stones. Installation shall take place according to Specification for Stone Flashing in the appendix.

G. Existing coping stones that become damaged through the construction process shall be replaced. New replacement coping stones shall resemble appearance and materials of existing coping stones, but they shall have a small mark indicating that they are new and not original to the facility. The small mark shall be on the roof side of the replacement stone. Provide drawing to show the location of new replacement coping stones.

4. OPTION 1: REPLACE LINTELS ABOVE WINDOW SET A

A. Replace lintels on northeast facing elevation outlined in red boxes in the diagram below.

B. The brick unit measures 7-3/4 by 3-1/4 by 2 inches and has a mortar joint measuring

1/2 inches. The materials under the brick arches and above the window lintels on the first floor are cast stones. The keystones are cast stones. In areas where the lintel is primarily composed of bricks, the bottoms of the keystones are below the bottoms of the brick arches by about an inch or so.

C. Original detail and photos of window lintels are below. This detail shows the cast keystone in section, and it overhangs the bottom of the lintel. The photos show the differences between the primarily brick lintels with the keystone, and the primarily cast stone lintels. Single width double hung windows have four-foot-wide openings.

Double width double hung windows have six-foot-wide openings. There are four twelve-foot-wide openings in total on the ground floor east elevation.

D. Remove masonry and cast stone elements from existing lintels. Remove at least three brick courses or equivalent materials at least 8” to the side of each jamb to fully expose lintel.

E. Replace steel members with galvanized steel members of matching dimensions.

Provide a new stainless-steel flashing system that includes a mechanically fastened termination bar, slope, end dams, drip edge, and mesh weeps. Flashing shall cover exterior facing side steel and extend vertically at least three courses of bricks. Drip edge shall extend beyond edge of lintel standard distance. Drip edge shall be fit such that it extends underneath cast keystone and adjacent bricks and stones neatly. Install according to detail shown below.

F. Reset bricks and cast stone elements using mortar recommended in the mortar report.

G. Existing bricks and cast stones that become damaged through the construction process shall be replaced. New replacement bricks and cast stones shall closely resemble appearance and materials of existing bricks and cast stones, but they shall have a small mark indicating that they are new and not original to the facility.

Provide drawing to show location of new replacement bricks and cast stones.

5. OPTION 2: REPLACE LINTELS ABOVE WINDOW AND DOOR SET B

Perform same work as described in section 3 on the three lintels outlined in red in this diagram shown below.

5. OPTION 3: REPLACE LINTELS ABOVE WINDOW AND DOOR SET C

Perform same work as described in section 3 on the three lintels outlined in red in this diagram shown below.

2.2 COMPLIANCE

Any of the work being performed at this historic site must retain and preserve the historic character of the buildings in compliance with the Secretary of the Interior’s Standards for the Treatment of Historic Properties.

2.3 MATERIAL LISTS

Submittals are required for all materials intended for use in this Contract.

2.4 BUILDING CODES

1. Work shall conform to the 2024 International Building Code.

2. Work shall conform to the 2024 NFPA 70 (National Electric Code).

2.5 DEFINITION OF CONTRACT LINE ITEMS

See attached Contract Price Schedule

3.0 RESOURCE PRESERVATION

3.1 NATURAL RESOURCE PRESERVATION

Implement the following mitigation measures to minimize impacts of construction activities:

Soil: Intact native topsoil from the project area shall be retained whenever feasible. Intact native topsoil from the project area shall be retained whenever feasible. Should additional fill be needed, all fill must be of quality suitable for use in a National Park Unit. Any new soils/sediment brought on site must be tested and meet New York State Department of Environmental Conservation standards for general fill (6 CRR-NY 360.13). Any fill materials required for the project must be obtained from a park-approved source. Such materials are to be clean of contaminants and free of exotic seeds and spores. Written verification of such should be provided to the CO and COR prior to delivery of material. Soils should not be amended.

Imported soils: Such materials are to be clean of contaminants and free of exotic seeds and spores. Written verification of such should be provided to the CO and COR prior to delivery of material.

Soil Erosion: Protect against erosion and topsoil depletion.

Exotic Vegetation and Noxious Weeds: Prevent introduction and minimize spread of exotic vegetation and noxious weeds. Incorporate following procedures if site next to buildings is impacted due to construction activities:

Vegetation: Vegetation may not be trimmed, removed, sprayed or otherwise damaged.

Should trimming or removal of shrubs or trees be identified during the project design, then a vegetation survey must be conducted, and a replacement plan must be developed and submitted for park Resource Stewardship Division review prior to commencement of work. Replacement of woody vegetation with a 4-inch diameter at breast height will be required.

Wildlife: Do not intentionally disturb wildlife nesting, breeding, or other activities. If exterior project work will be implemented during period of March 15 to September 1, park Natural Resource Stewardship must be contacted to conduct an inspection of the work area prior to initiating work to determine if there is any nesting activity that could be impacted by the project. If nest building begins, birds must not be harassed in any manner to deter nesting activity. Park approval is required prior to placement of any structures to deter osprey nesting and any such structure may only be put in place between September 2 and March 14.

It is the Contractor responsibility to check any bird nest on buildings and notify the Contracting Officer in writing. If nests are found, all work should be suspended in that building and no work should proceed until Park Natural Resource Stewardship approval is obtained. The contractor shall adhere to a seasonal restriction on the use of heavy construction equipment/machinery within 300 meters of any active osprey nest along the project limit of disturbance from April 1 through August 31 of each calendar year.

A qualified wildlife biologist must conduct the bird nesting survey work.

Qualifications for the biologist follow:

Successful completion a full 4-year course of study leading to a bachelor's or higher degree in biological science that included at least 9 semester hours in such wildlife subjects as mammalogy, ornithology, animal ecology, wildlife management, or research courses in the field of wildlife biology; and at least 12 semester hours in zoology in such subjects as general zoology, invertebrate zoology, vertebrate zoology, comparative anatomy, physiology, genetics, ecology, cellular biology, parasitology, entomology, or research courses in such subjects (excess courses in wildlife biology may be used to meet the zoology requirements where appropriate); and at least 9 semester hours in botany or the related plant sciences;

Or

A combination of education and experience: equivalent to a major in biological science (i.e., at least 30 semester hours), with at least 9 semester hours in wildlife subjects, 12 semester hours in zoology, and 9 semester hours in botany or related plant science, as shown above, plus appropriate experience. The appropriate experience includes at least one year doing a combination of the following activities:

• Assisting with the collection of field data on wildlife habitats and vegetation;

• Interpreting aerial photos to determine vegetation types;

• Assembling biological and vegetation use data from records to determine Past wildlife and livestock use; and/or

• Assisting with the classification and evaluation of vegetation and soil to determine suitable habitats and ranges for wildlife.

Visitor Experience: Provide the Project Manager with the project schedule as soon as it is known and provide periodic updates of project work.

Contractor shall maintain access routes to all doors at RVC throughout this project.

Contractor shall create a pedestrian circulation and safety plan showing that park visitors and staff using the RVC will be protected from falling objects, will have access to the facility, and ability to egress from facility in event of an emergency. Should closure or rerouting of visitors be necessary, closures would be for the minimal time required to complete the work activity or correct the problem. Allow park minimum 15 business days to review pedestrian circulation and safety plans.

Air and Water Pollution Control:

Minimize tailpipe emissions, do not leave construction equipment idling longer than necessary for safety and mechanical reasons.

Minimize construction dust by applying water to problem areas. Limit equipment to fenced project area to minimize soil disturbance and dust generation.

Take necessary reasonable measures to reduce air and water pollution with material or equipment used during construction. Keep volatile wastes in covered containers.

All machinery containing fuels and oils shall have a spill kit available to immediately use in the event of a spill. In the event of a fuel or oil leak or spill, the work shall cease immediately, spill containment deployed, and Gateway NRA Dispatch (718) 354-4700 shall be called immediately.

Best management practices must be employed to prevent the loss of construction materials, debris, and sediment from entering the waterways. Seed-free straw bales must be deployed for sediment/erosion control. Haybales must not be used as sediment barriers.

Construction Debris:

All construction debris and removed material shall be transported outside the park and properly disposed of at an approved off-site location(s) in accordance with federal, state, and local regulations.

Light Pollution

If lighting is proposed, project shall comply with NPS and park lighting guidelines to reduce impacts to the night sky and wildlife. This will include, but is not limited to, energy-efficient light sources in a warm color hue such as amber or yellow (2700K or warmer); shielding to direct light downward; lowest lumens possible; and fixtures with adaptive technology controls such as timers, motion detectors, hue adapters, and dimmers

Wheel Ruts and Divots

Any wheel ruts, holes or divots in lawn areas caused by the work shall be repaired by the contractor. Any bare soil areas created by the work shall be seeded with annual ryegrass and a native grass seed mix designed for the Northeast US region, where needed to restore area to pre-construction condition. Seed shall be applied at a rate of ½ pound per 1,000 square feet unless otherwise required for compliance with applicable standards. The park’s Resource Stewardship Division must approve all plant selections before they are purchased.

3.2 CULTURAL RESOURCE PRESERVATION

Ground Disturbance

If ground disturbance is anticipated, an Archeological Monitor will need to be present at work site. If archeological resources are discovered at project site while Archeological Monitor is absent, immediately stop work in vicinity of discovery and report discovery to Contracting Officer. If archeological monitoring is required for project ground disturbance, then the contractor will be required to obtain an ARPA permit.

4.0 CONTRACT ADMINISTRATION

4.1 PROGRESS PAYMENTS

Progress payments will be based on percentage of work completed on items listed in approved schedule of values. Actual construction completed and in place will form basis for payment. The Contractor shall verify percent complete under direction of the Contracting Officer Representative unless Contracting Officer waives this requirement in a specific instance.

Contractor shall make computations for payment based on Government’s verification of work completed and in place for periods which progress payments are requested. Update currently accepted construction schedule monthly. If the Contractor fails to provide monthly updates or revisions to currently accepted construction schedule, a portion of monthly payment may be retained until updates/revisions made.

4.2 PROJECT MEETINGS

Preconstruction Meeting

Submit following deliverables a minimum of one week prior to Preconstruction Meeting.

Accident Prevention Program (APP) Site Plan with storage area, trailers and buildings boundaries.

Evidence of liability insurance coverage and workman’s compensation for the Contractor and Subcontractors Historic Preservation Treatment Plan Letters designating Project Manager, Project Superintendent, CQC Manager, and Safety

Manager. Submit resumes for each key personnel.

List of required permits.

List of Subcontractors (same as proposal).

Project Baseline Schedule.

Schedule of Values shall be part and integrated in the Project Schedule.

Quality Control Plan Storm Water Pollution Prevention Plan (SWPPP) Waste Management Plan Written statements from Subcontractors certifying compliance with applicable labor standard clauses

Progress Meetings

The Contractor shall participate in Bi-Weekly virtual conference calls with Contracting Officer Representative, Contracting Officer and other project team members with updates to following meeting agenda items:

Approval of minutes of previous meetings.

Modifications Review of off-site repair and delivery.

Requests for Information (RFI) and issues.

Schedule update. (Provide updated CPM (Critical Path Method) schedule.)

Submittal status.

Work in progress and projected.

Other business relating to work.

4.3 PROJECT SCHEDULE

General Requirements:

Project schedule shall cover entire contract period. Late finish date is same as contract’s established completion date.

The Contractor shall provide a pdf and native file of the project baseline schedule.

A two-week lookahead schedule shall be submitted weekly and discussed at the Bi-

Weekly virtual conference call. Update the project schedule monthly throughout contract period until project substantial completion. The period of performance can only be changed with a contract modification issued by the Contracting Officer. Status date of each schedule update shall be 10 days before progress payment request date.

Construction work cannot begin until Government approval is obtained for the work plan for each building, schedule, safety plan, materials and/or any Contractor certifications to be utilized for the work involved in this Contract.

The Contractor shall ensure project schedule includes own work and Subcontractor work.

Required Software:

Latest version of Microsoft Project, Primavera Project Planner, SureTrak, or equal.

Schedule Development

The Contractor shall use Critical Path Method (CPM) with limited use of lead or lag durations between schedule activities. The Contractor's project schedule shall consist of procurement activities (including mobilization, submittal, and fabrication and delivery of key and long-lead procurement items) and construction activities.

The Contractor's project schedule shall consist of, but not be limited to:

Identify activities and numbers numerically (maximum 5-digit). Number activities in increments of 10.

Concisely describe work represented by activity (maximum 48 characters). Avoid using non-standard abbreviations. Limit work related to each activity to one work trade.

Activity duration shall be in whole working days with maximum duration 15 workdays each, unless otherwise approved by Contracting Officer, except for non-construction activities including mobilization, shop drawing and sample submittals, fabrication of materials, delivery of materials and equipment, and concrete curing.

Project schedule shall show sequence and interdependence of activities required for complete performance of work and shall be cost and resource loaded. The Contractor shall ensure work sequences are logical and project schedule shows a coordinated work plan. Proposed durations assigned to each activity shall be the Contractor's best estimate of time required to complete activity, considering scope and resources planned. Resource loading of each activity shall list personnel by labor category and equipment type, and capacity proposed to complete activity in duration shown. Include permit requirements and constraints. Consider and include seasonal weather conditions in planning and scheduling of work influenced by high or low ambient temperatures and wind and/or precipitation, to ensure completion of work within contract time.

Project Schedule Updates

Monthly updates of project schedule shall be an integral part and basic element of estimate upon which progress payments shall be made under this contract. If, in judgment of Contracting Officer, the Contractor fails or refuses to provide schedule of values and complete schedule update or revision as specified hereinafter, the Contractor shall be deemed to have not provided required information upon which progress payment may be made and shall be subject to retainage of a portion of the payment.

Each project update shall include a narrative consisting of, but not be limited to:

Brief description actual progress made during update period.

Actual and potential delaying activities.

Impediments to progress.

Issues related to inclement weather.

Progress toward established milestones.

Project float.

Brief description of work anticipated to be performed in next month.

Identify minor revisions to schedule for evaluation and accepted or rejected.

As work progresses, indicate Actual Completion percentage for each activity. If schedule update shows late finish date after contract completion date, at a minimum, include the following in narrative with submission:

Known delays.

Actions taken to get back on schedule.

Pending modifications.

Impediments or constraints affecting progress.

4.4 TIME IMPACT ANALYSIS REQUIREMENTS FOR CONTRACT MODIFICATIONS,

CHANGES, DELAYS, AND CONTRACTOR REQUESTS

When contract modifications or changes are initiated, delays are experienced, or the Contractor revises project schedule, the Contractor shall submit to Contracting Officer a written time impact analysis illustrating influence of each modification, change, delay, or Contractor’s request on the contract time.

Time Extensions

Activity delays shall not automatically mean an extension of contract time is warranted or due to the Contractor. It is possible that modification, change, or delay will not affect existing critical activities or cause non-critical activities to become critical. A modification, change, or delay may result in only absorbing a part of available total float that may exist within an activity chain of the project schedule, thereby not effecting the contract time. Time extensions will be granted according with terms of contract.

Float

Float is not for exclusive use or benefit for NPS or Contractor. Extension of contract time is granted only to extent the equitable time adjustments to activity or activities affected by modification, change, or delay exceeds total (positive or zero) float available on a particular activity.

4.5 CONSTRUCTION SUPPORT

Staging Areas

Limit construction sites to smallest feasible area. Carefully control ground disturbance and site management to prevent undue damage to vegetation, soils, and archeological resources, and to minimize air, water, soil, and noise pollution.

Consult with Contracting Officer and develop standards and methods for determining standards.

Structures such as trailers, storage, field offices, sheds must be approved by Contracting Officer

Staging areas should be coordinated and approved by NPS prior to any mobilization.

Staging is limited in or near construction area for a construction office or trailer.

Locate construction equipment and material storage in previously disturbed areas near construction site preferably on hard surfaces such as pavement.

Once construction is complete, return staging areas to pre-construction conditions.

Construction Camps

Establishment of construction camps will not be permitted.

Construction Zones

Before construction activity, use construction barrier, plastic, or portable fencing, approved by Contracting Officer, to define construction zone/minimum area required for construction. Clearly state protection measures in the staging plan and instruct workers to avoid conducting activities beyond construction zone.

Protection of Public

Use freestanding fence, barricade, or other means to block immediate work area and prevent unauthorized entry. Erect and maintain fencing, barricades, lights, signals, and warning signs according to current version of Manual on Uniform Traffic Control Devices (MUTCD).

4.6 SUBMITTAL TYPES

There are two primary types of submittals. Action Submittals require Government approval prior to construction. Informational Submittals are either accepted or rejected.

Action Submittals

Written, graphic information, and physical samples that require Government’s responsive action.

Product Data: Collect information in single submittal for each element of construction and type of product or equipment.

Samples: Submit Samples of kind, color, pattern, and texture for reviewing characteristics with other elements and comparing between submittal and actual component as delivered and installed.

Construction Materials: The Contractor is encouraged to submit, for approval, products made of recycled or environmentally responsible material. NPS will make every effort to approve these materials.

Informational Submittals

Written information not requiring Government’s responsive action. Submittals may be rejected for not complying with requirements.

Key Personnel Insurance and Bonds Project Schedule Submittal List List of Subcontractors Accident Prevention Program Quality Control Management Plan Site and Staging Plan Waste Management Plan

Contractor’s Review

Review each submittal for coordination with other work of contract and compliance Contract Documents. Note corrections to field dimensions and actual conditions.

Coordinate each submittal with fabrication, purchasing, testing, delivery, other submittals, and related activities requiring sequential activity.

Partial submittals are not acceptable, will be considered non-responsive, and will be returned without review.

Processing Time

1. Action Submittals: Allow 15 days for initial review of each submittal. Allow 10 days if coordination with subsequent submittals is required. Allow 15 days for review of submittal resubmission.

2. Informational Submittals: Allow 15 days for review of each submittal.

Contracting Officer’s (CO) Review

Contracting Officer will review each submittal, generate comments on corrections or modifications required, and indicate appropriate action:

Action Submittals

1. Approved: Acceptable with no corrections required.

2. Approved with Notations: Minor corrections or clarifications required. Comments are clear and no further review required. The Contractor shall address review comments when proceeding with work.

3. Disapproved – Resubmit: Rejected for not according with contract or requiring major corrections or clarifications. Contracting Officer will identify reasons for disapproval.

The Contractor shall revise and resubmit with changes clearly identified.

Informational Submittals

4. Accepted

5. Rejected

Use for Construction

Use only final submittals marked with Approved or Approved with Notations. Ensure notations are incorporated and, at a minimum, keep one copy of final approved submittal on site during construction.

4.7 CONSTRUCTION COORDINATION

The Contractor shall work with Park Project Team and develop communication plan.

Notifications

Contracting Officer provides necessary written notification and/or direction to the Contractor.

On-site Contracting Officer’s Representative from the Park coordinates the Contractor’s construction efforts with daily operations and transmits/receives correspondence.

4.8 QUALITY CONTROL

The Contractor is responsible for quality of work. Independent testing laboratory is responsible for testing. Inspect and test work as needed to ensure quality of materials, workmanship, construction, and finish, and to ensure functional performance is in compliance with applicable scope of work.

The Contractor accepts ultimate responsibility, liability and duty to control quality of services provided to the Government as stipulated in FAR Part 36.609-2. Contractor shall be responsible for professional quality, technical accuracy and other services furnished by the Contractor, their Employees, Agents, Assignees, and Subcontractors under the contract. Contractor shall, without additional compensation, correct or revise any errors or deficiencies.

The Contractor shall maintain a record of CQC Daily Reports, Daily Test Report Information Sheets, and Accessibility Inspection Reports of quality control activities and tests. CQC Daily Reports may not be substituted for other written reports required under clauses of the contract such as disputes, differing site conditions, or changes

The Contractor shall demonstrate existence of a Quality Control (QC) system used for work submitted to NPS. Contractor and Subcontractors shall use this QC system and, at a minimum, include:

Coordination of all construction work required for each building.

Verification that documents to be submitted are accurate and correct.

Checklists for internal review of construction work, and cost estimates.

o Required documents for each submission are included and complete per contract requirements.

o Required documents have been through a QC review. NPS requires documentation and submittal of QC work performed.

CQC Supervisor will complete CQC Daily Reports.

Testing Laboratory and Equipment:

Person performing tests will complete test reports.

Contracting Officer may designate test locations.

Quality Control Staff Requirements

CQC Manager, designated by the Contractor, shall be on project site whenever contract work is in progress.

Contractor's job supervisory staff may assist CQC Manager, as necessary, by adding certified testing technicians.

Testing Laboratory and Equipment:

Employ certified independent laboratories to perform sampling and testing. Testing laboratory organization shall be certified for type of testing work.

Calibrate measuring devices, laboratory equipment, and instruments at established intervals against certified standards according to National Bureau of Standards (NBS) requirements.

Quality Control Submittals:

Quality Control Plan

Prior to Preconstruction meeting, submit written CQC plan for approval.

If plan requires revisions or corrections, the Contractor shall resubmit plan within 10 days.

Government reserves right to require changes to the plan during contract period as necessary to obtain quality specified.

No change in the approved plan may be made without written concurrence by Contracting Officer.

The plan shall include:

A list of personnel responsible for quality control and assigned duties. Include each person's qualifications.

A copy of a letter of direction to CQC Manager outlining assigned duties.

Names, qualifications, and descriptions of laboratories to perform sampling and testing, and samples of proposed report forms.

Methods of performing, documenting, and enforcing quality control of work.

Methods of monitoring and controlling environmental pollution and contamination as required by regulations and laws.

Daily Reports

Submit and include inspections and tests on first workday following date covered by report.

Test Reports

Submit Test Information Sheets with CQC Daily Reports.

Submit failing test results and proposed remedial actions within four hours of noted deficiency.

Submit electronic copies of complete test results no later than one calendar day after test performed.

If CQC plan and CQC Daily Reports are not submitted as specified, Contracting Officer may retain payments until a plan is accepted and implemented. Or Contracting Officer may retain payments for work completed on days with no CQC Daily Reports.

Off-Site Inspection Reports

Submit prior to shipment

Execution of Quality Control

Notify Contracting Officer at least 24 hours in advance of initial and follow-up phases.

Off-Site-Control

Items fabricated or assembled off-site shall be inspected for quality control at the place of fabrication.

On-Site Control

Notify Contracting Officer at least 48 hours in advance of preparatory phase meeting.

Quality Control Phases

Preparatory Phase: Perform before beginning each feature of work.

Review control submittal requirements with personnel directly responsible for quality control work. At a minimum, CQC Manager and Superintendent responsible for the feature of work shall attend.

Ensure copies of referenced standards, related to sampling, testing, and execution for the feature of work, are available on site.

Ensure provisions were made for field control testing.

Examine work area to ensure preliminary work completed.

Verify field dimensions and advise Contracting Officer of discrepancies with contract documents.

Ensure necessary equipment and materials are at project site and comply with approved shop drawings and submittals.

Document preparatory phase activities and discussions on CQC Daily Report.

Initial Phase: As soon as work begins, inspect and test a representative portion of a particular feature of work for quality of workmanship.

Review control testing procedures to ensure compliance with contract requirements.

Document initial phase activities and discussions on CQC Daily Report.

Exact location of initial phase shall be indicated for future reference and comparison with follow-up phases.

Follow-Up Phase: Inspect and test as work progresses to ensure compliance with contract requirements until completion of work.

Additional Preparatory and Initial Phases: May be required on the same feature of work for the following reasons:

Quality of on-going work is unacceptable.

Changes occurred in applicable quality control staff, on-site production supervision, or work crew.

Work on a particular feature of work is resumed after a substantial period of inactivity.

Enforcement

Contractor shall stop work on any item or feature pending satisfactory correction of any deficiency noted by quality control staff or Contracting Officer.

4.9 WORKING HOURS

Limit work and deliveries to weekday hours of 7:00 AM to 5:00 PM unless otherwise approved by Contracting Officer. Any requested work on holidays or weekends requires approval from the Contracting Officer.

4.10 TEMPORARY SERVICES

Temporary materials may be new or used but must be adequate in capacity for required usage, must not create unsafe conditions, and must not violate requirements of applicable codes and standards.

Fire Protection Equipment: Observe and enforce standards of fire prevention. No open fires allowed.

Vehicles and Equipment: Provide one fire extinguisher on each vehicle or piece of equipment. Extinguishers shall have a minimum UL (Underwriters Laboratory) rating of 2-A:10-B:C. A capable and qualified person shall be placed in charge of fire protection.

Responsibilities shall include locating and maintaining fire protective equipment and establishing and maintaining safe torch cutting and welding procedures.

Hazard Control: Take necessary precautions to prevent fire during construction. Do not store flammable or combustible liquids in existing structures. Provide adequate ventilation during use of volatile or noxious substances.

Spark Arresters: Equip gasoline or diesel-powered equipment, used in potential forest or grass fire locations, with spark arresters approved by U. S. Forest Service. Contracting Officer will issue written determinations of areas and periods of potential fire hazard.

Locate internal combustion equipment so exhausts discharge well away from combustible materials. Locate service areas a minimum of 50 feet from buildings. Shut down equipment before refueling.

Smoking and Tobacco Use: Smoking within buildings or temporary storage sheds is prohibited. Tobacco use including vaping is prohibited.

Welding: Cutting by torch or welding shall be performed only when adequate fire protection is provided. Submit a Hot Work Permit to Park Law Enforcement and Contracting Officer for approval.

Electricity and Lighting: Make arrangements with utility company for metered connection to existing utility and pay costs. Coordinate work with Contracting Officer.

Temporary electrical work shall meet requirements of current version of NFPA 70 NEC Article 590 (National Fire Protection Association (NFPA), National Electrical Code (NEC)). When temporary connections are removed, restore existing utility services to original condition.

Telephone: Contractor shall make arrangements with local telephone company and pay costs for job-site telephone service.

Water: Contractor shall provide potable water and pay costs.

Heating and Cooling: Furnish temporary heating and cooling. Do not use permanent heating and cooling system without written authorization from Contracting Officer.

When permanent heating and cooling system is approved for use as temporary heating and cooling, pay costs until final acceptance. Install new filters before final acceptance.

Equipment warranties start on date of final acceptance.

Sanitary Facilities: Provide and maintain temporary toilet facilities according to State Health Department and NPS regulations. Provide separate accessible facilities for men and women with privacy locks. Enclosures shall be weatherproof, sight proof, and of sturdy construction. Completely remove sanitary facilities on completion of work.

4.11 ACCESS

Coordinate construction efforts with Contracting Officer towards minimal impact to the work of NPS personnel and to the visiting public.

During construction of scheduled facilities, the Contractor shall have continuous access to the site.

4.12 PRESERVATION OF ADJACENT FEATURES

Confine operations to work limits of project. Prevent damage to natural surroundings. Restore damaged areas outside work limits, repair or replace damaged trees and plants, at no additional expense to NPS.

Provide temporary barriers to protect existing trees, plants, and root zones that will remain in place. Do not remove, injure, or destroy trees or other plants without prior approval. Consult with Contracting Officer and remove roots and branches interfering with construction. To prevent damage, carefully supervise excavation, grading, backfilling, and other construction operations near trees and plants.

4.13 EXISTING UTILITIES

Contractor is responsible to locate utilities in each building and protect them. Minimize service disruptions. Contractor shall coordinate with local utility companies and NPS of any affected utility by construction work. Arrange disruptions at least 48 hours in advance with NPS and get approval from Contracting Officer.

Construction procedures shall include preventing accidental disruptions to facilities outside project limits by investigating existing utilities and protection during construction. Accidental disruptions shall be remedied at no cost to NPS.

4.14 ENCOUNTERING UNEXPLODED ORDINANCE

Be advised, Gateway National Recreation Area (GATE) is home to former active military sites and there could be unexploded ordnance (UXO) contained within the ground and/or waters of the park. If a UXO is discovered, extreme caution is warranted, and it should be treated as a live/active munition until proven otherwise. If a UXO is discovered or suspected, immediately cease operations and notify the GATE Dispatch Center (24/7) by calling 718-354-4700. Advise all personnel to clear the area and do not touch the item(s). Emergency response officials will respond and investigate.

4.15 HAULING RESTRICTIONS

Comply with legal and local load restrictions. For delivery material and equipment coordinate with NPS and Park for routes, access, and escort to delivery site. Arrange delivery at least 48 hours in advance with NPS and get approval from Contracting Officer.

4.16 ACCIDENT PREVENTION

Accident Prevention Program

Prior to Preconstruction Meeting, submit accident prevention program. Program must be accepted by NPS before work on site begins and shall comply with Occupational Safety and Health Administration (OSHA) and project requirements. Include:

Name of responsible Safety Manager to carry out the program. Submit a complete resume.

Monthly safety meetings.

First aid procedures.

Outline of each phase of work, hazards associated with each phase, and methods proposed to ensure property protection and safety of the public, NPS staff, and DB Construction Contractor employees.

Training Planning for possible emergency situations.

Housekeeping and fire protection.

Accident Reporting: Report

Accidents defined as death.

Occupational disease.

Traumatic injury to the Contractor’s personnel, NPS employees, or the public.

Property damage of accidents in excess of $100 Fires within 2 days.

Complete DSC Contractor Accident/Property Damage Report (CM-22) and forward to

Quality Assurance

Ensure employees are physically qualified to perform assigned duties safely. Do not allow employees to work if their abilities are impaired. Operators of equipment shall be able to understand signs, signals and operating instructions, and capable of operating such equipment.

Accident Prevention Products

First aid facilities.

Personnel protective equipment shall meet requirements of NIOSH and MSHA (National

Institute for Occupational Safety and Health and Mine Safety and Health Administration).

Emergency instructions including telephone numbers and reporting instructions for ambulance, physician, hospital, fire department, and park police. Place in conspicuous locations at work site.

Adequate egress at all times according to Standard for Safeguarding Construction, Alteration, and Demolition Operations (NFPA 241).

Hard hats for employees and for up to six visitors.

Designate and post signs in hard hat areas.

Training

Provide training for first aid and hazardous material handling and storage.

4.17 CONTRACTOR PROVIDES EQUIPMENT AND SERVICES

The contractor shall provide all personnel, services, vehicles, transportation, tools, equipment, materials, supplies, facility supervision, administration supervision and any other item(s) necessary to perform and accomplish this service. The contractor shall be familiar with all the terms, conditions, and requirement herein contained. All work must comply with federal, state and local regulations.

4.18 TEMPORARY CONTROLS

Housekeeping: Keep project neat, orderly, and in safe conditions at all times.

Weather Protection: When inclement weather is expected, provide temporary protection for areas where roofing, siding, windows, doors, or other enclosing elements have been removed or have not been installed. Inspect protective coverings frequently to ensure proper function.

Hurricane Season: Begins May 15 and terminates November 30. If hurricane threatens area, secure and close project site at least 24 hours before anticipated storm landfall. The 8a Contractor should follow Park and state guidance.

4.19 PROJECT CLOSE-OUT

Project Record Documentation

Maintain one complete record of all construction documentation. Clearly mark changes, deletions and additions, using NPS standards to show actual constructed conditions. Certification of accuracy and completeness are required for monthly payment requisitions. On completion of total project, submit complete project documentation.

Cleaning

Before scheduling final inspection, remove tools, equipment, surplus materials, and rubbish. For surfaces damaged due to work performed under this contract, restore or refinish to original condition. Remove grease, dirt, stains, foreign materials, and labels from finished surfaces.

Remove construction debris from site. At time of final inspection, project shall be thoroughly clean, and all construction debris disposed outside of the park.

Before submitting request for final inspection, submit:

Project Documentation: As specified above.

Guarantees and Bonds: As specified in Performance Requirements.

Operation and Maintenance (O&M) Data: As specified below

Operation and Maintenance (O&M) Data

Prior to final inspection, provide one three-ringed binder with O&M data to Contracting Officer for review. Data shall include manufacturer’s standard literature, vendor-furnished as-built drawings, custom written data not included in manufacturer’s standard literature, schedules, warranties, parts lists, test results, and Subcontractor list.

After NPS completes review, incorporate comments. Submit three final sets of O&M data to

4.20 SUBSTANTIAL COMPLETION

Submit written certification to Contracting Officer indicating project, or designated portion of project, is substantially complete, and request inspection. Upon receiving certification, Contracting Officer and Contracting Officer’s Representative will proceed with inspection within 10 days or advise the Contractor of items preventing project from being designated as substantially complete.

When work is determined substantially complete, Contracting Officer will prepare a list of deficiencies (Punch List) for corrections before final acceptance and issue a Letter of Substantial Completion. If work is not determined substantially complete, Contracting Officer will notify the Contractor in writing. After completing work, the Contractor shall resubmit certification and request new final inspection.

Following final inspection, if work is determined substantially complete, Contracting Officer will prepare list of deficiencies for corrections before final acceptance and issue a Letter of Substantial Completion. Contractor shall complete work described on list of deficiencies within 30 calendar days, as weather permits. If the Contractor fails to complete the work within this time frame, Contracting Officer may either replace or correct the work with an appropriate reduction in contract price or charge for re-inspection costs according to the contract’s Inspection of Construction clause.

Acceptance of the work: After deficiencies corrected, Contracting Officer will issue a Letter of Final Acceptance.

APPENDIX

SPECIFICATION FOR STONE FLASHING

PART 1---GENERAL

1.01 SUMMARY

A. This procedure includes guidance on weatherproofing vulnerable masonry joints by embedding a soft lead strip into a caulking compound/sealant filled joint.

B. This type of work is often necessary when unknown building movement causes the failure of existing joint caulk/sealant in locations such as a masonry/stone parapet, coping, balustrade, railing, cornice, belt course ledges, or any other exterior masonry/stone features where the top surface is exposed. This also includes corner and fillet joints where a horizontal surface joins to a vertical surface; with horizontal protection to extend down over front and back edges 2" or to an appropriate stopping point to protect the exposed corner.

1.02 SYSTEM DESCRIPTION

A. Stone flashing is a weatherproofing product, manufactured from lead, which is designed to be used with a building sealant for the weatherproofing and protection of masonry joints. It consists of a molded cap or fillet surface with a splined tang for anchoring in the sealant filled mortar joint; manufactured in a selection of sizes, and in continuous strips for field cutting and fitting.

1.03 SUBMITTALS

A. Manufacturers' information, shop drawings (manufacturer's standard detail sheets), materials lists and certificates for the products proposed for use.

B. Samples: 12" long pieces of each type of stone flashing proposed for use.

1.04 QUALITY ASSURANCE

A. Restoration Specialist: Work must be performed by a firm having not less than 5 years successful experience in comparable masonry restoration projects and employing personnel skilled in the restoration processes and operations indicated.

1.05 WARRANTY

A. Provide copies of all manufacturer's guarantees of materials and installation, duly signed and dated.

B. Include all warranty inspections by a manufacturer's representative necessary to effect the guarantee of material performance and its installation.

PART 2---PRODUCTS

2.01 MANUFACTURERS

A…