A04-SOW-GATE_308880_CONSTRUCTION_SOW.pdf

GATEWAY NATIONAL RECREATION AREA

BROOKLYN, NEW YORK

GATE 308880

REHABILITATE MASONRY FACILITIES AT

JAMAICA BAY

Request for Proposal (RFP)

NATIONAL PARK SERVICE (NPS)

TITLE PAGE PAGE 1

TABLE OF CONTENTS PAGE 2

SCOPE OF WORK PAGE 3

ATTACHMENT A BUILDING 117 DRAWING PAGE 34

ATTACHMENT B BUILDING 88A DRAWING PAGE 37

ATTACHMENT C BUILDING 57 DRAWING PAGE 40

ATTACHMENT D BUILDING PHOTOGRAPHS PAGE 42

02 82 00 ASBESTOS REMEDIATION PAGE 59

02 83 00 LEAD REMEDIATION PAGE 98

04 01 20 MAINTENANCE OF MASONRY PAGE 124

31 13 16 SELECTIVE TREE AND SHRUB TRIMMING PAGE 132

1.0 PROJECT INTRODUCTION

Project Identification: GATE 308880 Project Title: Rehabilitate Masonry Facilities at Jamaica Bay

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 and Fort Tilden in the Jamaica Bay Unit.

1.2 BACKGROUND

This project rehabilitates masonry facilities at Floyd Bennett Field and Fort Tilden historic districts within the Jamaica Bay Unit at Gateway National Recreation Area. The buildings include:

● 117 (17.5-by-31.5-foot electrical shed on the North side of Floyd Bennett Field),

● 57 (10-by-12-foot electrical shed on Floyd Bennett Field),

● 149 (building with chimney on Fort Tilden),

● 201 (thirty-five-by-fifty-foot building on Fort Tilden),

● 88A (17.5-by-31.5-foot electrical shed on the Floyd Bennett Field),

● 125 (thirty-by-seventy-foot building on Forth Tilden), and

● the Ryan Visitor Center at Floyd Bennett Field.

FLOYD BENNETT FIELD FORT TILDEN

All of the buildings included in this project are resources contributing to their historic landscapes. The purpose of this work is to preserve the functionality of these facilities and make them safe for continued use.

1.3 DESCRIPTION OF WORK

Work includes masonry resetting and repointing, block window restoration, vent repair, lintel replacements, door replacements, window installation, roof rehabilitation, and removal of encroaching vegetation including woody vegetation. Vegetation has encroached on facilities due to a lack of maintenance. The masonry in these facilities is in a degraded state, and this allows for water to infiltrate structures that house electrical equipment. The steel lintels above the windows and doors are corroded, and the more voluminous rust is pushing the bricks out of place destroying the structure. Repairing the masonry, windows, doors, and lintels will restore the ability of the structure to repel water and safely house the electrical equipment. Removing the encroaching vegetation around the facility will enable the facility to be durable in the future and discourage wildlife from using the electrical facility as a house.

1.4 DATA AND MATERIALS PROVIDED BY NPS

• ATTACHMENT A: Building 117 Existing Plans

• ATTACHMENT B: Building 88A Existing Plans

• ATTACHMENT C: Building 57 Existing Plans

• ATTACHMENT D: Photograph Documentation of Scope Requirements

• Specification 02 82 00 ASBESTOS REMEDIATION

• Specification 02 83 00 LEAD REMEDIATION

• Specification 04 01 20 MAINTENANCE OF MASONRY

• Specification 31 13 16 SELECTIVE TREE AND SHRUB TRIMMING

2.0 PROJECT REQUIREMENTS

2.1 SCOPE OF WORK

1. BUILDING 117 REHABILITATION

A. VEGETATION REMOVAL. Clear all shrubs, bushes, and vegetation located on the facility and within five feet of the facility including the stairs. Prior to vegetation removal, document genus, species, common name and dbh for all holly trees (any dbh) and for all other woody vegetation greater than four inches diameter breast height. Trees shall be cut to the stump, and the stumps shall be removed to below grade. Woody vegetation removal must be conducted between November 1 and March 31 to avoid potential impacts for federally protected species of bats. Work shall take place according to specification 31 13 16 SELECTIVE TREE AND SHRUB TRIMMING

B. WORKING AROUND ELECTRICAL EQUIPMENT

Work will take place adjacent to electrical equipment with closed doors. In safety plan, account for protecting employees from electrical shocks and protecting the equipment from the work.

C. MORTAR TESTING: Create a plan to probe the existing mortar holding the bricks together. 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 three probes in the mortar between the brick masonry shall be carried out at different locations. A minimum of two samples shall be taken of the mortar between the window blocks. Ensure paint is not included in the mortar samples. Submit plan to National Park Service (NPS) Contracting Officer Representative for approval. Contractor shall allow at least 15 business days for NPS review. After receiving approval for the plan, contractor shall carry it out. Repair probe holes.

D. MORTAR REPORT: Contractor shall prepare a report indicating the makeup of the mortar probes and a discussion about what is the original and most appropriate mortars to use in the repair. The report shall be prepared by an entity with at least five years of documented experience in historic preservation.

E. HAZARDOUS MATERIAL TESTING

Test existing roofing materials for asbestos.

F. RESET AND REPLACE MASONRY

Building 117 has double-wythe masonry 9-inch-thick walls. See Attachment C for photograph documentation of scope requirements. Use the mortars specified in the mortar report for all mortar applications in the rehabilitation of 117.

• Remove and reset all out of plane and disjointed masonry including interior and exterior layers of bricks.

• Re-use existing bricks that are in good condition.

• Replace existing bricks that are deteriorated or that have become damaged through the construction process.

• New replacement bricks 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.

• Replace missing and broken glass blocks in windows.

• Provide drawing to show location of new replacement bricks and window blocks.

• Work shall take place according to attached specification 04 01 20 MAINTENANCE

OF MASONRY

G. REPLACE WINDOW/VENT LINTELS

Replace eight steel lintels. There are six steel lintels over the glass block windows and two lintels over window vents. The dimensions of the openings in the brick masonry are approximately 48” wide by 18” tall.

Submit for approval a drawing stamped by an engineer licensed in the state of New York showing new galvanized steel window lintels. Drawing shall include member sizes, lengths, flashing, drainage, and how items set in the masonry.

H. REPLACE WINDOW VENTS

Replace two existing window vents and screens with two new window vents and screens similar to existing. Replacement shall include all necessary framing.

I. REHABILITATE ROOF

• Dimensions of roof are 19.5 feet by 33.5 feet.

• Remove loose materials and vegetation from roof.

• Submit drawing stamped by an engineer or architect licensed in state of New York for repair of all spalled material on concrete roof and concrete roof supports above the masonry. Photographs of spalls are shown in Attachment C. Stamped drawing shall include notes and directions for rehabilitating the tar and gravel roof.

• Repair roof and spalls according to drawing. Undertake work according to specifications 02 82 00 ASBESTOS REMEDIATION as required by results of testing.

2. BUILDING 57 REHABILITATION

A. VEGETATION REMOVAL. Clear all shrubs, bushes, branches, vines, and vegetation located on the facility and within five feet of the facility including inside and outside of the fence.

C. MORTAR TESTING: Create a plan to probe the existing mortar holding the bricks 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 three probes in the mortar between the brick masonry shall be carried out. Submit plan to National Park Service (NPS) Contracting Officer Representative for approval. Contractor shall allow at least 15 business days for NPS review. After receiving approval for the plan, contractor shall carry it out. Repair probe holes.

D. MORTAR REPORT: 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

E. HAZARDOUS MATERIAL TESTING

Test existing roofing and wall coating materials for lead and asbestos prior to undertaking work on them.

F. RESET AND REPLACE MASONRY

Building 57 is approximately 10 feet by 12 feet in plan. The walls are completely composed of masonry including brick masonry and cast concrete masonry. Brick masonry is placed in common bond. The brick unit has dimensions of 7-3/4 x 2 x 3-3/4 inches with ½ inch mortar joints. The bricks are a different color and texture than those used at the Ryan Visitor Center. The walls are 12 inches thick. See Attachment C for photograph documentation of scope requirements.

• Re-use existing bricks that are in good condition.

• Replace all cast stones in the cast stone trim and the cast keystones.

• Replace existing bricks and that are deteriorated become damaged through the construction process.

• 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.

• After completion of work all bricks shall be clean from stains.

G. INSTALL DOVETAIL UNDERCOPING FLASHING under the coping stones according to this specification.

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 oz.

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

• Flashing shall be sized to fit neatly over existing wall and under coping stones.

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.

• Apply bedding mortar on top of Dovetail Under Coping flashing and re-set existing cast coping stones.

• 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.

H. REPLACE WINDOW/DOOR LINTELS

Replace four steel lintels. The lintels span four openings described below:

• two openings are approximately 38” tall by 38” wide,

• one opening is approximately 26” tall by 26” wide, and

• one opening is approximately 85” tall by 52” wide.

showing new galvanized steel window lintels. Drawing shall include member sizes, I. REPLACE DOOR AND FRAME

• Replace existing door and frame with new steel flush panel door and frame. Color to be dark bronze.

• Dimensions of opening in masonry are approximately 52” x 85.” Verify dimensions in field.

F. REPLACE WINDOWS

• Remove two single hung vinyl existing windows in approximately 38” by 38” masonry openings.

• Remove framing from approximately 26” by 26” masonry opening.

• Field verify sizes of rough openings.

• Install three new fiberglass replacement single hung windows in existing rough openings. Exterior color to be dark bronze.

H. REMOVE UNUSED ELECTRICAL EQUIPMENT

• Remove unused electrical equipment indicated in attached photograph presentation.

• Terminate all wires in accordance with 2023 National Electric Code.

H. REMOVE INTERIOR SURFACE COATING TO BRICK

• Remove interior paint and coating to expose the brick surface.

• Undertake work according to specifications 02 82 00 ASBESTOS REMEDIATION and 02 83 00 LEAD REMEDIATION as required by results of testing.

J. REPOINT MASONRY

• Repoint interior and exterior walls according to attached 04 01 20 MAINTENANCE

• It is not necessary to repoint the interior walls behind the electrical equipment that is to remain in place.

K. REHABILITATE ROOF

• Roof is approximately ten feet by twelve feet.

• Remove all vegetation and roots from roof.

• Remove existing roof materials including flashing and roof covering. Undertake work according to specifications 02 82 00 ASBESTOS REMEDIATION as required by results of testing.

• Submit drawing stamped by an engineer or architect licensed in state of New York for replacement roof with 80 mil TPO roofing material, flashing detail, and drainage elevation plan. Roof shall drain to scupper. Roof and roof flashing and counter-flashing materials shall cover and protect interior side of parapet and roof. New flashing shall be copper. Flashing shall be designed to fit with dovetail undercoping flashing either in combination or as a single piece. Roof shall be designed to withstand winds indicated in ACI 7 with a risk category of 2.

• Install roof according to stamped drawing.

L. FIX FENCE

Fix fence on outside of facility such that it is stable, plumb, and door opens and latches smoothly.

3. REMOVE CHIMNEY NEXT TO BUILDING 149.

A. HISTORICAL DOCUMENTATION

Document with photographs and drawings or three-dimensional model of existing chimney prior to demolition. Drawings or three-dimensional drawings shall contain detailed dimensions of chimney. Provide this documentation to the park in a report in a submittal.

B. CONTAMINATED WASTE MANAGEMENT

• Assume asbestos and lead based materials.

• Furnish hazardous material abatement remediation plan to remove all of the chimney.

Plan shall be signed by an engineer licensed in the state of New.

• Implement contaminated waste control measures for the site as outlined in plan.

C. DEMOLITION

• Demolish chimney to a depth of two feet below the ground surface.

• Project site shall be cleaned from hazardous materials.

D. HAZARDOUS WASTE REMOVAL

• Remove all hazardous materials from project site.

• Hazardous waste shall be stowed in a container specific for use in hazardous waste removal.

• Hazardous waste transporter shall have a 6 NYCRR Part 364 Waste Transporter Permit.

• Waste disposal site shall be authorized to receive hazardous waste.

• Provide waste manifests.

E. SITE RESTORATION

• Replace soil to ground line.

• Establish grass on new soil such that it is vibrant after three mowings.

4. BUILDING 201 REHABILITATION

A. MORTAR TESTING: Create a plan to probe the existing mortar holding the bricks 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 two probes in the mortar between the brick masonry shall be carried out. Submit plan to National Park Service (NPS) Contracting Officer Representative for approval. Contractor shall allow at least 15 business days for

B. MORTAR REPORT: Contractor shall prepare a report indicating the makeup of the

C. DOCUMENT EXISTING DIMENSIONS OF WEST CHIMNEY: Document existing dimensions of chimney, including height, width, length, details at top of chimney, brick pattern, brick size and mortar thickness prior to work. Submit documentation to NPS.

D. REBUILD WEST CHIMNEY: Remove and reset bricks so that chimney is plumb. It is expected that the chimney will be rebuilt from below the existing roof line to the top.

• Remove chimney to stable masonry support. It is expected that the chimney will be rebuilt from below the existing roof line to the top.

• Preserve existing bricks which are able to be used in the reconstruction of the chimney.

• Remove and replace flashing at base of chimneys.

• Rebuild chimney to documented dimensions of existing chimney. New chimney shall be plumb.

• Replace existing bricks that are deteriorated or that have become damaged through the construction process.

• New replacement bricks shall closely resemble appearance and materials of existing bricks, 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.

• Replace flashing after re-setting bricks.

OF MASONRY.

E. RE-POINT EAST CHIMNEY

Repoint mortar in chimney according to Repoint exterior walls of Building 201 according to attached specification 04 01 20 MAINTENANCE OF MASONRY. Prior to repointing chimney mortar bricks, remove flashing at base of chimneys. Replace flashing after repointing mortar.

F. REPOINT BUILDING MASONRY

Repoint exterior walls of Building 201 according to attached specification 04 01 20

MAINTENANCE OF MASONRY

5. OPTION 1: BUILDING 88A REHABILITATION

A. VEGETATION REMOVAL. Clear all shrubs, bushes, and vegetation located on the facility and within five feet of the facility including the stairs. Prior to vegetation removal, document genus, species, common name and dbh for all holly trees (any dbh) and for all other woody vegetation greater than four inches diameter breast height.

Woody vegetation removal must be conducted between November 1 and March 31 to avoid potential impacts for federally protected species of bats. Trees shall be cut to the stump, and the stumps shall be removed to below grade. Branches shall be pruned according to attached specification 31 13 16 – SELECTIVE TREE AND SHRUB

TRIMMING.

C. RESET AND REPLACE MASONRY

Building 88A has double-wythe masonry 9-inch-thick walls overall. See Attachment C for photograph documentation of scope requirements. Use mortars specified in the report for Building 117 for the mortar applications in Building 88A.

• Re-use existing bricks that are in good condition.

• Replace existing bricks that are deteriorated or that have become damaged through the construction process.

• New replacement bricks 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.

• Replace missing and broken glass blocks in windows.

• Provide drawing to show location of new replacement window blocks.

D. REPLACE WINDOW/VENT LINTELS

Replace eight steel lintels. There are six steel lintels over the glass block windows and two lintels over window vents. The dimensions of the openings in the brick masonry are approximately 48” wide by 18” tall.

showing new galvanized steel window lintels. Drawing shall include the member sizes, E. REPLACE WINDOW VENTS

Replace two existing window vents and screens with two new window vents and screens to match existing. Replacement shall include all necessary framing.

F. REPLACE DOOR AND FRAME

• Existing door has two door panels with hinges on each side. There is a top section that is separate from the bottom section.

• Replace existing door and frame with new steel flush panel door and frame. Color to be dark bronze. Match door sections to existing door sections

• Dimensions of opening in masonry are approximately 94” x 132.” Verify dimensions in field.

• Replace 4-inch-wide by seven-foot-long concrete curb at base of door

G. OPTION 2: REMOVE GENERATOR BEHIND BUILDING 88A

• Remove branches and vegetation necessary to facilitate removal of generator according to attached specification 31 13 16 – SELECTIVE TREE AND SHRUB

TRIMMING.

• Remove this generator on the northwest side of 88A from the site and dispose of it according to state and federal laws.

• The dimensions of this generator are 61” wide x 82” high x 147” long. There are two pieces on the top of the generator that add approximately 24” to the 82” height in certain spots.

• Generator is located within a fenced area. After removal of generator, fence shall be in a like new condition.

• Removal of generator shall be priced as its own contract option separate from the Building 88 rehabilitation costs in Option 1.

6. OPTION 3: REPOINT BUILDING 125 MASONRY

A. MORTAR TESTING: Create a plan to probe the existing mortar holding the bricks 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 two probes in the mortar between the brick masonry shall be carried out. Submit plan to National Park Service (NPS) Contracting Officer Representative for approval. Contractor shall allow at least 15 business days for

B. MORTAR REPORT: Contractor shall prepare a report indicating the makeup of the

C. Repoint all exterior surfaces on building 125 using the appropriate mortar for repair specified in the mortar report for building 125. Repointing shall include chimney and mortar under flashing in chimney. Replace flashing on chimney. See exterior photos of building 125. Work shall take place according to attached specification 04 01 20

MAINTENANCE OF MASONRY

7. OPTION 4: REPLACE LINTELS ON RYAN VISITOR CENTER

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. Keystones shall be reset such that they are in the original configuration with the bottom of the keystone below the bottom of the bricks.

H. 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.

2.2 MATERIAL LISTS

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

Replacement Seed Mix:

In maintained turf areas:

90% Tall Fescue 10% Kentucky Bluegrass mix or 30% Infernal Tall Fescue 30% Spyder Tall Fescue 30% Monet Tall Fescue 10% Scenic Kent Blue mix

2.3 BUILDING CODES

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

2. Work shall conform to the 2023 NFPA 70 (National Electric Code).

2.4 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.

Should additional fill be needed, all fills must be of quality suitable for use in a National Park Unit. 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.

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).

• Soil Erosion: Protect against erosion and topsoil depletion. Protect against erosion and topsoil depletion. Any straw bales deployed for sediment/erosion control must be seed-free straw for compliance with Federal Noxious Weed Control Act and Executive Order 13112.

• Vegetation: Vegetation may only be trimmed as outlined in these specifications.

Otherwise, vegetation may not be trimmed, removed, sprayed, or otherwise damaged to accommodate ladders or other equipment to conduct the work around the buildings. If such modification of vegetation is later determined to be necessary, then NPS/park Resource Stewardship Division must be contacted through the contracting officer’s representative (COR) to conduct an inspection of the work area prior to initiating the proposed vegetation modification. The Contractor shall protect tree trunks and root systems of trees in, or adjacent to, work areas.

• 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.

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

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.

• Air and Water Pollution Control:

Minimize tailpipe emissions, do not leave construction equipment idling longer than necessary for safety and mechanical reasons. Vehicle idling shall comply with New York City and New York State anti-idling laws.

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.

• Construction Debris:

Construction debris shall be collected in appropriate containers and controlled such that the forces of nature cannot spread it beyond the collection point.

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, warm color hue, low-lumens, and minimized glare. Fixtures shall be downward focused with full shielding. They shall have 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 archeological resources are discovered at project site, immediately stop work in vicinity of discovery and report discovery to Contracting Officer.

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.

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 and Division One Submittals 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).

Reporting Crime The Contractor is required to report all incidents of crimes committed on the job site to GATE Dispatch (718) 354-4700, and the Project Manager, regardless of the magnitude.

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

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…