Attachment 2 Performance Work Statement.pdf

Performance Work Statement (PWS)

SAN JUAN NATIONAL HISTORIC SITE

OLD SAN JUAN, PUERTO RICO

Replace Polvorin Fencing and Remove Trees

PMIS 245839

NATIONAL PARK SERVICE

Interior Region 2 South Atlantic Gulf

Storm Recovery Program

Replacement of the Polvorin Fencing and Trees — San Juan National Historic Site

1. Background. San Juan National Historic Site is one of the over 400 parks of the National Park Service. It includes Castillo San Felipe del Morro, Castillo San Cristóbal, most of the city walls, the San Juan Gate and Fort San Juan de la Cruz just across the entrance to the bay. The parks mission is to protect, preserve, and interpret the natural, cultural, and historical resources for the benefit and inspiration of present and future generations. There are over 1.5 million visitors annually.

The existing fencing is damaged and too close to the historic retaining wall around the Polvorin (Santa Elena Gunpowder Magazine). The sea grape trees root system are penetrating the historic retaining wall and damaging it. This project will remove existing fencing and existing sea grape trees. This project will install a new stainless fence offset approximately 6 feet further away from the historic retaining wall. All disturbed areas shall be covered with sod.

2. Required Services. The contractor shall provide all labor, tools, equipment, materials and supervision required to accomplish

A. Stainless Fencing with Concrete Columns at Polvorin (Santa Elena Gunpowder Magazine) Remove & replace 400 linear feet of chain-link fence El Polvorin with new Stainless

Steel fence and new concrete posts. See Figure 1, below and Figure 3, below.

Concrete foundation will be at least 18”x18”x18” deep minimum.

The contractor shall use of fiber glass rebar.

The use of glass fiber reinforced concrete (GFRC) is required.

Columns will be constructed at 12’-6” intervals (Edge of post to Edge of post) with support anchors at 6’3” intervals.

Fencing will be fabricated of 3” x 1/2” thick flat bar on top and bottom with 1” thick, hollow stainless steel tubing.

At the midpoint of each concrete column shall be a 1-1/2” thick square stainless steel tubing, which will be anchored in concrete.

Material: Type 316 Stainless Steel.

Contractor shall take field measurements prior to fabrication, to ensure proper fitting of the new fencing.

The contractor shall match the design and installation of the existing columns along the San Fernando Bastian.

The new fencing will be offset from the existing fencing a minimum 5 feet and a maximum 7 feet. The new fencing be parallel to the Polvorin retaining with a tolerance of 6 inches. Where fencing lengths are less than 12 feet, the contractor shall be prepared to install additional concrete columns as needed.

The contractor at a minimum shall install a concrete column at each bend or corner of the stainless steel fence.

See Attachment A for detail drawings.

Figure 1. Photo of stainless fencing similar to the fencing required per this contract.

B. Sea Grape Tree Removal

Remove 400 linear feet of sea grape trees at the Polvorin. See Figure 2, below.

Removal of a tree includes removal of the stump.

Contractor shall keep the premises free from accumulations of waste materials, rubbish, and other debris resulting from the Work, and at the completion of the Work he shall remove all waste materials, rubbish and debris from and about the premises as well as all tools, construction equipment and machinery, and surplus materials, and shall leave the site clean and ready for occupancy by the City. Contractor shall restore to their original condition those portions of the site not designated for alteration by the Contract. Divots/low spots created by tree removal shall be filled prior to leaving the job site.

Stumps, root flares, surface root laterals shall be removed to a minimum depth of six

(6) inches below grade. Grade is defined as the elevation of surrounding soil that has not been displaced by the tree including its roots.

In the case of removal of a live tree, the Contractor shall chemically treat stumps to prevent re-sprouting from occurring. Warranty: Should sprouts re-occur within twelve (12) months of stump removal, elimination of sprouts and chemical prevention of re-growth shall be performed at the Contractor’s expense.

In the case of removal of a live tree, the Contractor shall chemically treat stumps to prevent re-sprouting from occurring. Warranty: Should sprouts re-occur within twelve (12) months of stump removal, elimination of sprouts and chemical prevention of re-growth shall be performed at the Contractor’s expense.

No soil or grass mounds, humps or depressions shall be left upon completion of stump removal.

Stump chips shall be removed from the site upon completion of stump grinding.

Stump holes shall be filled with topsoil at a thickness average to the area topsoil thickness with a minimum of six (6) inches depth. Topsoil shall be fertile, friable, and loamy of uniform quality without admixture of subsoil materials, and shall be free from materials such as hard clods, stiff clay, hardpan, partially disintegrated stone, stone larger than one (1) inch in diameter, and other impurities. Topsoil shall be relatively free from vegetation debris. Topsoil shall be free of noxious weeds and other objectionable, undesirable vegetation that will prevent establishment of suitable turf. Fill soil to be tamped down and raked smooth to match grade.

Contractor shall anticipate potential settling to reduce potential for future return to the site by crowning the affected area to a minimum depth of two (2) inches surrounding existing grade. In no case shall the final grade be more than six (6) inches above surrounding existing grade.

C. Turf Grass Installation

Install turf grass over disturbed areas and along 6 feet wide strip between tree line and new fence or approximately 2,400 ft2. Turf grass sod shall be machine cut to a uniform thickness of 0.5 inches.

Turf Area Preparation - Moisten prepared area before planting if soil is dry. Water thoroughly and allow surface to dry before planting. Do not create muddy soil.

Lay sod within 24 hours of harvesting unless a suitable preservation method is accepted by COR prior to delivery time.

Lay sod to form a solid mass with tightly fitted joints. Butt ends and sides of sod; do not stretch or overlap. Stagger sod strips or pads to offset joints in adjacent courses.

Avoid damage to soil or sod during installation.

Lay sod across slopes exceeding 1:3. Anchor sod on slopes exceeding 1:6 with wood pegs spaced as recommended by sod manufacturer but not less than two anchors per sod strip to prevent slippage.

Saturate sod with fine water spray within two hours of planting.

Figure 2. Existing Sea Grape trees to be removed.

Figure 3. Proposed fencing alignment at the Polvorin (Santa Elena Powder House).

3. Contractor Responsibilities:

a. Concrete foundation for stainless steel fence posts shall have fiberglass rebar ½” rebar for reinforcement and will be at least 12”x12”x18” deep minimum.

b. Contractor shall make one piece concrete column construction to match existing park design in natural beige keystone finish for every column.

c. Contractor shall use Type 316 Stainless Steel for fence and any hardware exposed to the harsh elements of the salt air to prevent erosion.

d. Contractor shall cover any permit costs for heavy trucks and cost of equipment rentals if any including heavy machinery, back hoe, digger, crane, dirt compactor, towing of equipment etc.

e. Contractor will provide their own electricity by generator and every generator shall have a readily fire extinguisher close by.

4. Demolition. Contractor will be responsible for the removal of all disposal of existing fencing, fencing fabric, steel posts to include concrete foundations. See Figure 4, below. All debris and trash will be removed daily. Under no circumstance will debris and trash be left over night.

Figure 4. Image of the Polvorin (Santa Elena Powder House) Existing Fence Line and Sea Grape Trees to be Removed.

5. Security. Contractor shall be responsible for maintaining an orange construction fencing around the project area during construction.

6. Government Furnished Property, Materials & Supplies. None.

7. Business Hours. The contractor shall complete on-site work during normal business hours of 7:30 am to 4:30 pm, Monday through Friday, excluding Federal holidays. The contractor shall coordinate specific on-site work schedule with the Contracting Officer and Contracting Officer Representative (COR) five days prior to performance start date. While on site, the COR may be reached by mobile phone during normal business hours. Work shall be completed within 120 days after Contracting Officer issues notice to proceed. Any work outside of normal business hours shall be pre-approved by the Contracting Officer and COR.

7. Management. The contractor shall manage the total work effort in accordance with effective and efficient management principles and safe working practices to ensure on-time completion of this contract.

8. Safety & Environmental Compliance.

The contractor shall comply with pertinent provisions of the Occupational Safety and Health Act (OSHA), and state, local, safety, laws.

The contractor shall comply with pertinent Environmental Protection Agency laws and regulations.

The Park safety officer has the authority to issue restraint or cease-and-desist orders to the contractor when violations or unsafe acts are present and threaten Government and contractor employees or damage to Government property.

The contractor shall immediately report to the Contracting Officer, COR and Park safety officer all accidents resulting in employee injury or death or damage to property while performing this contract.

9. Use of Premises A. Ingress and Egress: Contractor shall confine work to within park boundaries. Ingress and Egress are identified in Figure 3, above.

B. Construction Camp: Establishment of a camp within the park will not be permitted.

C. Contractor shall at all times conduct his operations to ensure the least inconvenience to the public.

D. Do not disturb portions of the Project Site beyond areas in which the Work is needed.

E. Staging areas shall be approved by the contract team and natural resources representative prior to use.

F. Turning areas shall be approved by the contract team and natural resource representative prior to use.

G. Establishment of a construction trailer shall not be permitted.

H. Traffic on Park Roads must be maintained. The park roads must be clear and available to the public, Government employees, and emergency vehicles at all times.

I. Equipment will not be stored along the roadway overnight, without prior approval of the

Contracting Officer or their representative.

J. Existing Utilities: Notify Contracting Officer or their representative of proposed locations and times for excavation.

1. Contractor shall be responsible for locating and preventing damage to known utilities. If damage occurs, repair utility at no additional expense to the Government.

2. If damage occurs to an unknown utility, repair utility. An equitable adjustment will be made in accordance with the Changes clause of the contract.

K. Use of Site: Limit use of premises to areas within the construction limits indicated. Do not disturb portions of Project site beyond areas in which the Work is indicated.

1. Limits:

a. Limit site disturbance, including earthwork and clearing of vegetation, to a 10 foot wide corridor (5 feet on each side of fence) along the proposed fence line alignment.

b. Limit site disturbance, including earthwork and clearing of vegetation, to a 5 foot corridor around the edge of the proposed fence and post structures.

2. Preservation of Natural Features:

a. Prevent damage to natural surroundings. Restore damaged areas, repairing or replacing damaged grass, trees, and plants, at no additional expense to the Government.

b. Provide temporary barriers to protect existing trees and plants and root zones.

c. Do not remove, injure, or destroy trees or other plants without prior approval.

d. Consult with Contracting Officer or their representative and remove agreed upon roots and branches that interfere with construction.

3. Preservation of Cultural Features

a. Prevent damage to cultural surroundings.

b. Provide temporary barriers to protect existing cultural features.

c. Cultural resource site location information will be kept confidential.

d. All access to information regarding the location of cultural resources will be restricted to those employees on a need-to-know basis.

4. Government Occupancy: Allow for Government occupancy of Project site.

5. Construction equipment will not be permitted to idle for long periods of time.

10. Insurance. The Contractor shall be insured in accordance with the Commonwealth of Puerto Rico insurance regulations. The Government is not responsible for damage to Contractor’s equipment, vehicles, tools or materials or their employees and the personal property brought on-site. The Government will not accept any liability due to contractor employee negligence.

Workers Compensation: The contractor shall furnish proof of workers compensation insurance to the Contracting Officer for those employees performing work related to this contract and shall comply with the Workman’s Compensation Laws of the Commonwealth of Puerto Rico

Liability: The Contractor shall maintain a level of insurance that will protect the contractor and the Government from any claims as a result of bodily injury (including death) and property damage which may arise from and during the performance of this contract, and shall submit proof of insurance to the Contracting Officer.

11. Motor Vehicle & Traffic Regulations. Contractor employees operating motor vehicles shall possess a valid driver's license. Driver and vehicle permits, licenses, registrations and proof of insurance shall be maintained in the vehicle at all times and made available upon request.

Contractor employees shall comply with federal vehicle motor law requiring seat belts be worn at all times. Contractor employees shall adhere to the posted speed limits.

12. Employee Badges/Parking. All contractor employees shall comply with parking procedures published for the Park. Contractor employees shall return any PARK issued personal or vehicle identification badges immediately upon termination of employment or completion of this contract.

13. Replacement of Contractor Employee for Reasons. The Government retains the right to request removal of the contractor’s employee(s), regardless of prior clearances.

14. Non-Payment for Additional Work. Any additional contractor performed services not specified in contract, either at its own volition or at the request of an individual other than an appointed Contracting Officer, except as may be explicitly authorized in the contract, shall be performed at the financial risk of the contractor. Only an appointed Contracting Officer is authorized to bind the Government to a change in specifications, contract terms, or conditions.

15. Conflict of Interest. The contractor shall not employ off-duty COR’s or other Government employees if such employment would create a conflict of interest or be contrary to the policies contained in conflict-of-interest directives.

16. Submittal List. The following are to be submitted after contract award.

Technical approach to perform required services.

Shop drawings for Fence Posts and Foundations Shop Drawings of Stainless Steel Fencing

17. Inspection. The Government will conduct inspection upon completion of required services.

Final payment will be processed upon confirming that all noted contractor performance deficiencies have been satisfactorily corrected.

18. Attachments.

Attachment A – Stainless Fencing Detail Drawings

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DESIGNED: SUB SHEET NO. TITLE OF SHEET DRAWING NO.

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FENCE WITH CONCRETE PMIS/PKG NO.

TECH. REVIEW:

POSTS

245839

SHEET

g�/21/20191

REPLACE FENCING AT POLVORIN

SAN JUAN NATIONAL HISTORIC SITE 2 OF 2 --

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JBergeron Text Box

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