Atch_1_Audubon_Prairie_Trail_SOW.pdf

SECTION C

STATEMENT OF WORK

TO

CONSTRUCT PRAIRIE TRAIL, OWL SITE

AT

AUDUBON NATIONAL WILDLIFE REFUGE

PART 1. GENERAL

1.01 DESCRIPTION OF WORK

A. Work under this contract consists of the construction of an accessible, reinforced concrete Prairie Trail, OWL Site. The concrete trail shall connect to an existing gravel trail and abutting existing concrete sidewalk at Audubon National Wildlife Refuge, McLean County, North Dakota.

1.02 DEFINITIONS

A. Contractor is the contracting entity selected with qualifications and experience in the construction of accessible concrete trails.

B. Contracting Officer (CO) is defined as a person with the authority to enter into, administer, and/or terminate contracts and make related determinations and findings on behalf of the United States of America.

C. Contracting Officer's Representative (COR) is an authorized representative of the

Contracting Officer, providing technical assistance and communicating with the

Contractor and On-Site Inspector throughout the course of the contract within the limits of their authority.

D. On-Site Inspector is an authorized representative of the Contracting Officer conducting daily inspection and communicating with the Contractor and COR throughout the course of the contract within the limits of their authority.

E. Service or FWS means Department of the Interior, United States Fish and Wildlife

Service, Region 6 (Mountain-Prairie Region)

F. Government may also be referred to as the Owner, Contracting Officer, Contracting

Officer's Representative, On-Site Inspector, the Service, or Fish and Wildlife Service

(FWS).

G. Station refers to the Project Leader at the Audubon National Wildlife Refuge.

1.03 WORK SITE AND JOB CONDITIONS

A. The site of the work is at the Audubon National Wildlife Refuge at 3275 11th St NW, Coleharbor, North Dakota. Prospective bidders should visit the site prior to bidding to observe the existing site conditions. Contact Jackie Jacobson at (701) 442-5474 x127

COLEHARBOR, NORTH DAKOTA PRAIRIE TRAIL, OWL SITE

to set up a site visit.

B. The trail project includes concrete paving of approximately 3,120 LF. Of this approximately 3,120 LF, approximately 2,687 LF of existing crusher fines trail, approximately 433 LF of no established trail in a field, and approximately 392 LF in heavy brush and trees. Additional construction required for the project is to complete six extensions for interpretive signs and benches. Contractor shall coordinate final trail layout with Project Manager/Station prior to beginning work. Contractor shall verify lengths and quantities prior to bidding.

C. Trail traverses near wetland areas and through open spaces with variable grades.

Access to the trail is limited. Contractor will be required to clear grass, weeds, and brush and trees as needed to install trail. Approximately 392 LF is in heavy brush and tree area that will need to be cleared to install the trail. The maximum grubbing allowed in the brush and tree area is 20 feet wide.

1.04 SUBMITTALS

A. Submittals are to be sent to the COR and CO for review and approval using the approved forms.

B. Contractor to submit electronic copies of submittals and shop drawings.

C. Contractor shall submit manufacturer’s literature, catalog cuts, calculations, shop drawings, sketches, certificates, product data, warranties, or other information for all materials and products utilized in the project.

D. Submit copies of each delivery ticket for all material delivered to the construction site.

The delivery ticket shall show brand name, catalog number, and number of items received.

1.05 PAYMENT SCHEDULE

A. The Contractor may submit for progress payments throughout the project. During construction the Contractor shall request an inspection of the project from the

Government On-Site Inspector prior to submitting progress payment to Contracting

Officer.

B. The Contractor shall submit for final payment once all contract work is completed, including but not limited to as-built drawings and a final inspection performed by the

Government.

PART 2 DESIGN STANDARDS

2.01 BASIS OF DESIGN

A. The project drawings indicate the general alignment and location of the concrete trail, concrete pads, interpretive signs, and bench locations. It is desired that the indicated layout be followed as closely as possible. Coordinate final layout with Station

Manager and On-Site Inspector. Note any changes on as-built drawings.

B. Design in accordance with all applicable Federal, State and Local codes and regulations (latest edition at the time of contract award). If there is any conflict between these codes and regulations, the more stringent shall be followed. The following Codes and Regulations establish the minimum requirements.

1. American Concrete Institute – ACI

2. American National Standards Institute – ANSI

3. American Society for Testing and Materials – ASTM

4. Americans with Disabilities Act – ADA

5. Architectural Barriers Act Accessibility Guidelines for Out Door Developed

Areas – ABA (http://www.access-board.gov/guidelines-and-standards/recreation-facilities/)

6. http://atfiles.org/files/pdf/Trail-Accessibility-Design-Malibu.pdf

7. International Building Code - IBC

8. Occupational Safety and Health Administration – OSHA

2.02 SITE/TOPOGRAPHICAL SURVEY

A. No survey has been conducted by the Government. It is the contractor responsibility to assess the alignment and construct at locations that meet all regulations and requirements outlined in this Statement of Work.

2.04 ACCESSIBLE TRAIL GUIDELINES

A. Trail development must be in compliance with the ABA and ADA. The following are minimum requirements taken from these guidelines.

B. Clear Tread Width: The clear tread width of the trail shall be five feet minimum.

C. Trail Surface: Trail surface shall be firm, broom finish, and stable.

D. Cross Slope: The cross slope shall not exceed 1:20 maximum.

E. Running Slope: The running slop shall comply with any one or more of the provisions stated below. The slope shall be maintained at 1:20, if possible. The maximum running slope is 1:12 for a maximum of 200 feet. In areas where the running slope is

1:12 maximum, resting areas will be provided at intervals of 200 feet maximum.

F. Resting Intervals: Resting intervals shall be 60 inches long minimum, shall be at least as wide as the widest portion of the trail segment leading to the resting interval, and shall have slope not exceeding1:20 in all directions.

PART 3 CONSTRUCTION

http://www.access-board.gov/guidelines-and-standards/recreation-facilities/ http://www.access-board.gov/guidelines-and-standards/recreation-facilities/ http://atfiles.org/files/pdf/Trail-Accessibility-Design-Malibu.pdf

3.01 GENERAL

A. The Contractor shall provide all labor, materials, tools, engineering, construction equipment and machinery, transportation and other facilities and services necessary for proper execution and completion of the project, whether temporary or permanent, and whether or not mentioned in the Statement of Work or drawings.

B. The Contractor shall be responsible for and shall coordinate all service means, methods, techniques, sequences, and procedures subject to the Contracting Officer’s right to reject those which would constitute a hazard to the work, persons, or property.

The Contracting Officer’s right to reject shall not be construed or interpreted as acceptance of control of means, methods, etc. The Contracting Officer’s approval or failure to exercise the right to reject means, methods, etc., shall not relieve the

Contractor of the obligation to complete the work.

C. All proposals for substitutions must be submitted in writing to the Contracting Officer for approval. Substitution proposals shall include all data necessary for thorough comparison with specified item and reason for the proposed substitution. The

Contracting Officer’s determination as to whether substitution will be permitted and as to what substitute materials may be used shall be final and conclusive.

D. The Contractor shall correct work which does not conform to the Specification

Documents.

E. The Contractor shall coordinate all work with the Contracting Officer. The project shall be completed in 60 days from the date of the Notice to Proceed is issued.

Construction is not allowed on weekends or Federal holidays without the permission of the Contracting Officer.

F. The Contractor is responsible for damages to existing structures and property of the

Government.

3.02 COORDINATION

A. Coordinate work so that station operations will not be restricted, and utilities will not be disrupted during critical periods in station operations. Arrangements shall be made with the Station Manager to schedule any work which interferes with Government operations.

B. Coordinate all work of the project to facilitate orderly progress and proper sequence of work at all times.

C. The Contractor shall notify the Station Manager at least 48 hours prior to putting any utility out of service.

D. The Contractor shall be responsible for obtaining all necessary local, State and Federal permits and licenses including payment of related fees, per Contract Clauses.

E. In the event that other contracts are in progress concurrently with this contract, the contractor shall coordinate his work so as not to disrupt progress of other work, and shall cooperate to facilitate orderly progress of all work.

3.03 SAFETY

A. The Contractor shall assume full responsibility and liability for compliance with all applicable Federal, State, and local regulations pertaining to the protection of workers, visitors to the site, and persons occupying areas adjacent to the site, including the provisions of 29CFR1910 and 29CFR1926 of the Code of Federal Regulations. The

Contractor shall hold harmless the Government for failure to comply with any applicable safety or health regulations on the part of himself, his employees or his subcontractors.

B. Provide and maintain a basic first aid kit for use of workers. Provide first aid supplies commensurate with size of project, with items necessary for first aid treatment of all injuries. Advise all workers of the location of first aid supplies.

3.04 QUALITY CONTROL

A. Contractor is responsible for quality control of their own work and work performed by their subcontractors.

B. The Contractor will arrange for quality assurance testing by an independent certified testing laboratory at its own expense for slump testing of concrete and any other tests required for complete construction. Provide copies of all test results to the onsite

Government Inspector and Contracting Officer’s Representative within 5 working days.

C. Comply with specified codes and standards, follow approved construction plans to ensure safe and satisfactory project completion.

3.05 TEMPORARY UTILITIES

A. Electricity, water, and toilets are available for use by the contractor for construction activities. These facilities are public and must be maintained in a proper manner for public use.

B. The utilities may only be available during certain hours of operation. The contractor shall account for this during construction.

3.06 STORAGE AREAS

A. All operations of the Contractor (including storage of materials) upon Government premises shall be confined to areas authorized or approved by the Contracting Officer.

3.07 PROTECTIONS

A. Contractor shall control environmental pollution arising from construction by complying with all applicable Federal, State, and local laws and regulations concerning environmental pollution control and abatement, as well as the specified requirements in this contract. The wetland and other water bodies on site shall be protected from construction debris with silt fences. The contractor is responsible of removing all protection structures.

B. Abatement of Air Pollution: The Contractor shall comply with applicable Federal, State, and local laws and regulations concerning the prevention and control of air pollution. Work activities shall be performed in such a manner that air pollution is held to a minimum.

C. Fossils and Cultural Materials: Should the Contractor discover any fossils or cultural materials during construction operations, such objects shall become the property of the

Government. The Contractor shall cease construction operations in the area of the

"find," and immediately notify the Contracting Officer of such discovery.

Construction operations may proceed in other areas not affected by this clause. Care shall be exercised by the Contractor so as not to damage or collect fossils or cultural materials uncovered during excavation operations. Failure to comply with this requirement may be considered a violation of the Archeological Resources Protection

Act of 1979 as amended. Destruction of historic and prehistoric sites and/or unauthorized collection of cultural materials can result in criminal and/or civil penalties. Penalties can include fines, prison sentences, and/or confiscation of equipment.

D. Time lost due to work stoppage because of failure of the Contractor to comply with these requirements shall not be the subject of a claim for extension of time, for costs, and/or damages.

E. Left over concrete truck/mix debris or concrete shall not be disposed of on-site. This should be disposed of in an appropriate manner that complies with federal, state, and local regulations.

3.08 CLOSEOUT PROCEDURES

A. The Contractor shall request a final inspection in writing at least 10 days prior to the anticipated date of completion.

B. Work will not be considered ready for final inspection until all the work has been completed and the Contractor has certified that all items are properly operating and in strict compliance with all contract terms and conditions.

C. The Contractor or their project supervisor shall be on site during the final inspection.

3.09 CLOSEOUT DOCUMENTS

A. Submit Record (as-built) Drawings at the time of final acceptance and prior to final payment. Note all data and changes on these record drawings in sufficient detail and clarity.

B. Submit fully executed manufacturer's standard material, product, and equipment warranties, assigned to the Government without any requirement that the Government incur any costs to maintain the warranties in force.

PART 4 SPECIFIC PROJECT REQUIREMENTS

4.01 SITE PREPARATION

A. Surfaces of existing structures to be in actual contact with the trail shall be protected while construction operations are in progress.

B. Contractor may cut or mow a 15 foot wide work area parallel with the trail location.

All ground disturbances will be confined to this area.

C. The Contractor shall clear and grub grass, brush, weeds, roots, and other organic material from existing trail that is needed to complete the work. All vegetation, terrain and improvements outside the construction areas shall be protected from injury and defacement.

D. Dispose of all wasted material at a legally designated disposal site. Burning of combustible materials at the site will not be permitted.

E. Strip and stockpile surface material to a minimum of 6 inches below existing grade, unless otherwise noted. Existing gravel may be used, if clean and free of impurities.

F. Maintain excavations free of water at all times. Protect excavations against frost and freezing when anticipated atmospheric temperature is less than 35 degrees Fahrenheit.

G. The subgrade shall be compacted and substantially true to line and grade. It shall have a dry, firm, and properly prepared surface before base course gravel is placed. All loose and foreign material shall be removed.

4.02 CONCRETE GENERAL

A. Submit material information in accordance with 1.04 – Submittals.

1. Concrete Mix Design for each type of concrete proposed for use.

B. Concrete Mix Design shall conform to these minimum requirements.

1. Trail Compressive Strength of 3,500 psi minimum

2. Abutment and Piles Compressive Strength of 4,000 psi minimum

3. Maximum Water-Cement Ratio of 0.59

4. Air Content of 4 percent to 6 percent

5. Slump of 4 inches plus or minus 1 inch

6. Fibermesh minimum of 1.5 pounds per cubic yard

7. Minimum 4 inches thick

C. Concrete Material Requirements.

Cement Portland cement, Type I-II or Type II.

Fly Ash Type C or Type F, 15%to 20% of total cementitious materials.

Fine Aggregate Natural sand with fineness module of 2.5-3.0

Base Coarse Crushed stone or gravel size of 3/4".

Water Clean and free of acids, alkalis, and organic materials.

Admixtures Chemical admixtures shall conform to ASTM C260-06

Fibermesh 100% virgin polypropylene fibers containing no reprocessed olefin materials.

Dye Light color, selected by Project Leader

D. Curing concrete is allowed using waterborne membrane-forming compound. Curing compound to comply with ASTM C309, Type I, Class B.

E. The dye shall be Color-Crete powder, or equal. Installation shall be the manufacturer’s recommendations and entire trail shall have a uniform color.

4.03 CONCRETE NATURE TRAIL

A. The trail will have a 4 inch thick gravel base course as outlined in the drawings. ¾” gravel shall be used per NDDOT standards consisting of sound and durable. Compact the gavel to a minimum of 95 percent of maximum Proctor density.

B. The Concrete Trail shall conform to these minimum requirements

1. Total trail length is approximately 3,120 linear feet.

2. Width of the trail shall be five feet, unless otherwise noted

3. Expansion joints every eight feet.

4. Trail to receive a broom finish from side to side, not joint to joint.

5. Additional bench and interpretative sign sections shall be installed at the locations in the drawings

6. Trail shall abut to existing building concrete slab with expansion joint

4.04 PARK BENCHES AND INTERPRETIVE SIGNS

A. The location of the benches and signs are indicated on the drawings and final location shall be determined by the Station. The benches and signs will be provided by the

Station.

B. The benches and signs shall be anchored to the concrete with concrete anchor bolts.

The anchor shall extend three inches into the concrete and shall have the ability to be removed at a later date. The diameter of the bolt shall be the possible maximum to attach to existing bracket. All available attachment points shall be used and installed with anchor bolts. The sign shall be able to be removed from the post.

C. The location of the benches and signs shall be attached as shown on the drawings, unless otherwise directed by the Station.

4.05 RESTORATION AND SEEDING

A. Backfill and compact along trail edges with native stockpiled material. Slope and grade the backfill to promote drainage off of the trail surface. Top soil shall be applied to a minimum depth of six inches. Remove surface irregularities within the area and create a smooth but unpacked surface. The existing abandon trail requires backfill and compaction.

B. After 2 feet of grading away from the edge of trail or bench and sign area, the

Contractor will then grade remaining backfill to match existing contours.

C. The contractor will provide the Station with the seed mix. The Station will install the seed mix. The total provided mixture shall be based on a density of the disturbed areas requiring seeding and application rate of eight pounds per acre. Contractor to submit seed mix materials data sheet for approval by the Contracting Officer.

D. Seed mix shall be determined by the Station. The mix may include little bluestem, sideoats grama, blue grama, western wheatgrass, and/or green needlegrass.

END OF SECTION C