SOW_Improve_Footwells_at_LC_Theater.pdf

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CAPE HATTERAS NATIONAL SEASHORE

STATEMENT OF WORK:

Improve Fort Raleigh National Historic Site Waterside Theater Seating

Footwells

NATIONAL PARK SERVICE

Region 2

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CAPE HATTERAS NATIONAL SEASHORE

Outer Banks Group

Statement of Work

Improve Footwells at the Fort Raleigh National Historic Site Waterside Theater

1.0 INTRODUCTION

The National Park Service (NPS) Cape Hatteras National Seashore (CAHA) has a requirement to improve the footwells at Waterside Theater in Fort Raleigh National Historic Site (Fort Raleigh).

2.0 CONSTRUCTION SITE LOCATION

Fort Raleigh National Historic site is located at 1401 National Park Drive Manteo, NC. 27954.

The footwells are located at the Waterside Theater.

3.0 BACKGROUND AND EXISTING CONDITIONS

The outdoor drama “The Lost Colony” is produced for the public from May until mid to late August annually. Therefore, construction in the Theater area cannot take place from 1 May through 1 September. Work accomplished in the Theater area must be performed outside of the production window of 1 May through 1 September. The Roanoke Island Historical Association utilizes the Waterside Theater facilities for events throughout the year. The outdoor amphitheater includes 26 rows of seats. Seating is attached to rows of continuous concrete footings within the amphitheater. The seats were replaced in 2022. The areas in between rows of concrete footings are filled with sand and have become unsightly with weeds and ponding water The attached drawings provide measured lengths of each row. Each footwell measures approximately 16 inches wide (See Figure 1 below). The footwells increase in length from the bottom of the theater up to the top row. The total length of all footwells measures approximately 2,676 linear feet (See Figure 2 below).

The sand in several rows has become a silty mix which holds water and does not percolate.

Rows N, O, P, and Q are dense with silty soil for several feet below the surface, and become saturated with rainfall events, not allowing water to drain down through the soil. Puddles that form in the footwells do not drain quickly enough which can cause standing water during the outdoor play productions. Rows N, O, P, and Q can retain standing water for several days after rain events (See photos in Figure 3 below).

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Figure 1: Typical footwell measures 16 inches wide.

Figure 2: Existing rows of various lengths: 19 ft up to 65 ft

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Figure 3: Ponding of Rows N, O, P, and Q following rain events.

4.0 SCOPE OF WORK

Remove and replace footwell material during the acceptable window for construction work at the Waterside Theater. Work shall not be allowed from 1 May through 1 September. Prior to start of work, provide the Deliverable for new materials as detailed in this scope of work.

1. Task 1: Carefully remove sand from the footwells of the Waterside Theater, 9 inches deep, x 16 inches wide, by approx. 2,676 ft long, approximately 100 cy. Do not scratch, damage, or harm new seating or seat frames.

2. Task 2: Dispose of sand at a landfill. Do not sell or reuse the sand. Provide receipts for the weight/volume of the waste soil.

3. Task 3: Clean the work site consisting of the concrete stairs and grade beams. Sweep or vacuum sand, weeds, and other fines away from the footwells.

4. Task 4: Carefully backfill the footwells with 5 inches of washed #3 stone (1”-3”) drainage stone with no fines. Compact the stone with hand tamper or other machine which will not damage the adjacent concrete or seating. Ensure top of new stone is approximately 4 inches below the chamfer of the adjacent concrete. Do not scratch, damage, or harm the newly installed seats. Damaged seating shall be replaced by the Contractor at the Contractor’s expense.

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5. Task 5: Clean the work site consisting of the concrete stairs and grade beams. Sweep or vacuum sand, weeds, and other fines away from the newly installed stone. Do not sweep fines or other material into the new stone footwells.

6. Task 6: Provide the final 4 inches of flexible pervious paving material. New material shall be placed up to the bottom of the chamfered edge of concrete bordering these footwells, approximately 1 inch below the top of each concrete seat foundation. New surface shall be level. Provide a product data deliverable of the flexible pervious paving material prior to installation. The product data must include the following information at a minimum:

a. Color: Provide color chart of available manufacturer colors for selection by the Contracting Officer.

b. Binder Material: Urethane based moisture cured UV protectant or approved equivalent binder material.

c. Heat Resistance: ASTM D4123

d. Firmness/Flexibility: Solid surface meeting Architectural Barriers Act (ABA).

Minimum 200 lbs per sq in without permanent damage or deflection.

e. Permeability: minimum 25 gal / sf / min drainage

f. Aggregate: Approximately 50/50 ratio of solid rock and recycled rubber

g. Acceptable vendors include:

i. KBI Flexi-Pave HD2000 system

ii. Rubberway Multi-purpose Surface

iii. H2Turf porous pavement with 50% rubber content

iv. Approved Equivalent Product

h. Cure time: Provide in writing on the product data document the recommended cure time, as well as appropriate barriers, signage, etc. to protect the new surface during the cure time.

i. The product data deliverable shall include the installer qualifications required by the actual product being installed. Products shall be installed per manufacturer’s installation requirements and specifications, including the Installer Qualifications:

Installer shall have the certification provided by the manufacturer, the number of years’ experience working with the suppliers products, or be able to obtain the certification to meet Manufacturer’s Installation requirements.

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Figure 4: Install permeable surface above the stone layer up to the chamfered edge of the concrete.

7. Task 7: Protect the newly installed materials until the cure time is completed. Place barriers, signs, or other materials to inform visitors to stay off the new products until cure time is complete according to manufacturer’s specifications.

NOTES:

1. The accessible path into and out of the theater area shall not be altered.

2. The Contractor is responsible for marking underground utilities within the limits of this project site.

3. The Contractor is responsible for protecting other utilities adjacent to the new work.

4. No smoking or tobacco products in or around the buildings (within 50 feet of buildings or entrances).

5. No obscene language on clothing. Appropriate clothing and shoe wear must be worn inside of the park.

6. The Contractor must track demolition debris sent to a landfill or recycled and provide NPS with receipts showing the weight and volume and type of material removed/recycled as part of this project.

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7. No construction debris will be allowed to be left on premises. All public areas will remain clean and passible during normal business hours. During business hours, the contractor will ensure that no music is playing in the work areas and no foul language will be tolerated during or after business hours. No pets are allowed on site during work hours. Work on this project will be accomplished within the hours of 7:00 AM to 5:00 PM Monday thru Friday.

5.0 GOVERNMENT FURNISHED PROPERTY

1. No Government property, materials, or equipment will be provided. Water and electricity are available for Contractor use during this project. Contractor is responsible for lockout/tagout.

6.0 SUBMITTALS

1. Work schedule: delineating the various stages of work by phase (milestones) prior to the preconstruction conference. Work cannot take place between 1 May through 1 September.

2. List of individuals working on the project, including a point of contact for Site Manager two weeks ahead of work starting.

3. Product Samples. The Contractor shall provide written documentation of product samples for materials identified in the Scope of Work for selection by the

CO/COR.

3.1 Clean Stone 1” – 3”

3.2 Color Samples of the Permeable material product

4. Receipts. Receipt from landfill showing weight ticket or volume/weight of construction debris.