Sol_140P5425R0023_Attach__0001-Specifications.pdf

PMIS 224713 SCOPE OF WORK - 1

SCOPE OF WORK

PART 1 - GENERAL

1.1 SUMMARY

A. This work consists of providing all labor, materials, and equipment to modify to the parking lot and associated work at the Pa-Hay-Okee Boardwalk in Everglades National Park.

B. The work site is at: 25.441 N Latitude and 80.784W Longitude. The site does not have a street address.

C. NPS Drawing Number 160/192,408A is incorporated as part of these specifications and included in the work of this project.

D. The work will be constructed under a single contract.

1.2 USE OF PREMISES AND WORK RESTRICTIONS

A. Use of Site: Limit use of the premises to the area immediately adjacent to the work site. Do not disturb portions of the site beyond the work area.

B. Preservation of Natural Features: Prevent damage to natural surroundings. Restore damaged areas, repairing or replacing damaged trees and plants, at no additional expense to the Government.

C. Preservation of Cultural Resources: No known archeological resources are in the area of this construction. If previously unknown archeological resources are discovered during the work of this project, the Contractor will immediately stop work in the area of discovery and notify the Contracting Officer. An equitable adjustment will be made in accordance with the Changes clause of the contract.

D. Start of Work Notification: At least two weeks prior to the start of on-site work, the Contractor shall notify the Contracting Officer of the intended start date. This will allow government personnel to conduct a final review the work site for any resource issues prior to the start of construction.

E. Threatened and Endangered Species: The following threatened or endangered species could be encountered in the project area: Wood Storks, Eastern Indigo Snakes, Bonneted Bats, Florida Panthers, and American Crocodiles.

1. No taking of any endangered species shall be allowed while conducting any work of this contract.

2. All work shall be done in daylight hours.

3. All sightings of these species shall be reported to the Contracting Officer.

4. When an endangered species is present or observed on the work site, work shall be postponed until the individuals leave the area.

5. Follow the Standard Protection Measures for the Eastern Indigo Snake published by the U.S.

Fish and Wildlife Service, August 12, 2013.

6. At the beginning of each day, any open trenches or excavation shall be inspected for the presents of Eastern Indigo Snakes or other wildlife.

7. At the start of the project, all on-site employees shall receive training to identify threatened and endangered species which maybe encountered on the site.

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F. Migratory Birds: The nesting season for the Eastern Black Rail is from March to September.

1. Any sightings of eastern black rails (especially with young) shall be reported to the Contracting

Officer.

G. Non-native species: To prevent the spread of non-native species into the park, the Contractor shall do the following:

1. Construction equipment brought to the site shall be cleaned of any foreign material which could contain non-native plants, seeds, animals or noxious weeks.

2. All materials (including fill dirt and aggregates) shall be free of non-native invasive plants and animals, and noxious weeds.

H. Erosion Control:

1. Erosion Control measures shall be in place before starting any earth disturbing activities.

2. Erosion control barriers shall include silt fence, fiber logs, and/or turbidity curtains depending on the nature of the area.

3. Trenching machines shall not be used for the installation of silt fence. The fence bottom shall be hand pressed into the soil or other method used to tightly hold the bottom against the soil.

I. Protection of the Public: Fence, barricade, or otherwise block off the immediate work area to prevent unauthorized entry.

J. On-Site Work Hours: Work shall be generally performed during normal business working hours of 7:00 a.m. to 5:00 p.m., Monday through Friday, except when otherwise indicated. Requests for any work outside those hours, including weekends and holidays, must be submitted for approval at least 48 hours in advance.

K. Existing Utilities: There are no utilities in the work area of this project.

L. Hurricanes: The government requires closing of operations between 72 and 48 hours of anticipated landfall of a tropical storm or hurricane as determined by the National Park Service. All project materials will be adequately secured or removed from the site within that time frame.

1.3 QUALITY ASSURANCE

A. The Contractor shall provide daily reports of construction activity. The form of the report is up to the Contractor, but the report shall include the following information:

1. Date

2. Project Title and Contract Number

3. Contractor’s name and On-site Superintendent’s name

4. General description of weather and ground conditions

5. Number of employees (including sub-contractors) working on-site. Employees shall be listed by job categories.

6. List of equipment working on-site.

7. Description of work performed

8. Any issues arising including disputes, unforeseen circumstances, differing site conditions, delays, accidents, etc.

B. Reports shall be e-mailed to the Contracting Officer on a weekly basis.

C. Testing Soil, Aggregate, and Asphalt:

1. Testing required to determine compliance with the requirements for the work will be the responsibility of the Contractor.

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2. The Contractor shall hire an independence testing agency to do the testing. For Asphalt Testing, the testing agency shall meet the requirements of ASTM D3666.

3. Density testing for soils and aggerates shall be by ASTM D6938 (Nuclear Methods) or ASTM Dl556 (Sand Cone Method). Perform one density test per 1000 sf of material placed. The percent maximum density for soils and aggregates shall refer ASTM 698 (Standard Proctor Test).

4. In-place density testing of asphalt pavement shall be by ASTM D2950. Perform one test per 1000 sf of asphalt pavement.

1.4 PRECONSTRUCTION CONFERENCE:

A. Before start of construction, the Contracting Officer will arrange a meeting with the Contractor. The meeting agenda will include the following as a minimum: correspondence procedures, designation of responsible personnel, payments to the Contractor, park rules and regulations, construction schedule, submittals, and project closeout requirements.

1.5 SUBMITTALS

A. All submittals shall be transmitted electronically in PDF or MS Word format.

B. Pre-Construction Submittals:

1. Submit a Progress Schedule (normally in bar chart form) showing estimated starting and completion dates for each part of the work.

2. Submit a Schedule of Values showing the breakdown of the Contract amount into appropriate units of work. Include general condition costs, overhead, and profit in each part of the work and not as separate items. The Schedule of Values will form the basis for progress payments as provided for in the General Provisions.

3. Submit a safety plan per the accident prevention paragraph of this section.

B. Material Submittals:

1. Provide Material Submittals for:

a. Submit manufactures product data, MSDS sheets, and installation instructions for all paint products used.

b. Submit certification from the supplier certifying that aggregate base course meets the requirements of this section.

c. Submit the job mix formula for the proposed asphalt mix design. The formula shall provide as a minimum the aggregate gradation, percent of asphalt, grade of asphalt, and final mix density.

2. All material submittals shall be transmitted using National Park Service form DSC-1(CS). No action will be taken on a submittal item unless accompanied by the transmittal form.

3. As specified in the individual sections, forward submittals to the Contracting Officer at least 21 days before need for approval.

4. The Government will return the submittals either approved, approved with notations, or disapproved.

C. Post Construction Submittals:

1. Project Record Drawings: Maintain one complete set of contract drawings. Clearly mark changes, deletions, and additions to show actual construction conditions. Show additions in red, deletions in green, and special instructions in blue.

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1.6 ACCIDENT PREVENTION

A. Before on-site work begins, submit a written accident prevention plan containing the following:

1. Identification of personnel responsible for safety at and both corporate and project level including on-site personnel.

2. Emergency Response Plan including site specific emergency contact information and location of the nearest emergency room.

3. Outline of each phase of the work, the hazards associated with each major phase, and the methods proposed to ensure property protection and safety of the public, National Park Service personnel, and Contractor's employees.

B. The Contractor shall follow all federal, state, and local safety and health requirements

C. The Contractor shall report all accidents to the Contracting Officer as soon as possible and assist the Contracting Officer and other officials as required in the investigation of the accident.

1.7 CONSTRUCTION MATERIALS:

A. All materials, including borrow and aggregates, shall be Contractor furnished from outside the park.

1.8 DISPOSAL

A. All removed material including, soil and rock, becomes the property of the Contractor and shall be disposed of outside the park.

1.9 DELIVERY, STORAGE, AND HANDLING

A. Protect signs from damage during transportation and storage. Store all materials off ground under protective covering.

1.10 FIELD VERIFICATION:

A. Field verify all new and existing dimensions affecting the work of this contract before ordering products. Any discrepancies between construction drawings, construction specifications, and field conditions shall be brought to the attention of the Contracting Officer before work is to be performed. Any work that is performed without notifying the Contracting Officer will be done at the contractor's own expense.

1.11 REFERENCES

A. References to the State Specifications shall mean the latest edition of the “Standard Specifications for Road and Bridge Construction", published by the Florida Department of Transportation.

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PART 2 - PRODUCTS

2.1 FIRST AID FACILITIES

A. Provide adequate facilities for the number of employees and the type of construction at the site.

2.2 PERSONNEL PROTECTIVE EQUIPMENT

A. Meet requirements of NIOSH and ANSI.

2.3 SANITARY FACILITIES

A. Sufficiently lighted and ventilated toilet facilities in weatherproof, sight proof, sturdy enclosures.

Place in approved locations secluded from public observation and convenient to work stations.

2.4 FILL AND EMBANKMENT MATERIAL

A. Fine, readily compactable soil or granular material, free from frozen lumps, stones larger than 2 inches, highly plastic clay, and organic or other objectionable material. Excavated material meeting this requirement shall be used before importing material.

2.5 AGGREGATE BASE COURSE

A. Aggregate Base Course meeting the requirements of Section 204 of the State Specifications.

2.6 BITUMINOUS CONCRETE

A. Superpave mix SP-9.5, Traffic Level A, meeting Section 334 of the State Specifications or S-III mix meeting the last published version of Section 331 of the State Specifications.

2.7 TRAFFIC PAINT

A. Waterborne fast-dry acrylic traffic paint. Total solids by weight shall be a minimum of 75% per ASTM D2369. Apply without glass spheres.

2.8 SIGNS AND HARDWARE

A. Reflective Sheeting: ASTM D4956, Type II.

B. Sign Panels: Alodine treated aluminum meeting the requirements of ASTM B 209 and Aluminum Association Alloy 6061-T6, 5154-H38 or 5052-H38. Minimum Thickness: 0.63”.

C. Sign Specifics:

1. ADA Parking Sign: MUTCD R7-8, (size 12”x18”). Include MUTCD R7-8p (size 12”x6”) for van accessible space.

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2. Accessible Route Sign: Wording “Accessible Route” with arrow pointing to the west trail. Size 12”x18”.

D. Hardware: ASTM A307 with hot dipped galvanized finish.

2.9 SIGN POSTS

A. Galvanized Square steel tubing with single breakaway anchor, roll formed from 12 gauge (.105 U.S.S. Gauge) hot rolled steel, galvanized material ASTM A-653 Grade 50. Average minimum yield strength after cold forming is 60,000 PSI.

B. Manufactured by TELESPAR or approved equal.

2.10 INTERPRETIVE SIGNS

A. Existing interpretive signs were salvaged and stored onsite from previous work. The Government will provide them to the Contractor for reinstallation.

PART 3 - EXECUTION

3.1 SITE EXCAVATION AND GRADING

A. All excavation will be considered unclassified regardless of the nature of material encountered.

B. In areas to receive pavement: Remove sod, roots, soft areas, or other objectionable material. Grade to subgrade elevations corresponding the finished pavement elevations shown on the plans.

Compact to a depth of 6 inches all embankment material and soil below subgrade to a density of not less than 90 percent of the maximum density. If the required compacted depth of the embankment material exceeds 6 inches, place course in two or more layers with the maximum compacted thickness of any one layer not exceeding 6 inches. Apply water as necessary.

C. In areas that will remain unpaved: Remove sod, roots, soft areas, or other objectionable material.

Grade to elevations shown on the plans. Compact enough so the material will remain in place and not sink under foot traffic.

3.2 SURFACE FINISH WORK

A. Grade all disturbed areas to a finish ordinarily obtained from a blade.

B. After asphalt is placed, pull existing shoulder material up to match the grade of the new asphalt.

C. Remove all rocks protruding higher than ½ inch from the surrounding ground.

D. Remove all loose rocks on the surface larger than 1-inch in diameter.

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3.3 PLACING AGGREGATE BASE

A. Place aggregate base coarse to provide a uniform grade. Compact with approved rollers or mechanical tampers to not less than 95 percent of the maximum dry density. If the required compacted depth of the aggregate base course exceeds 6 inches, place course in two or more layers with the maximum compacted thickness of any one layer not exceeding 6 inches. Apply water as necessary.

B. Use a smooth steel wheel roller for the final rolling of the top surface of the aggregate base. Correct soft spots developed during rolling, C. Surface of base aggregate shall be true to line and grade with a dense, smooth finish, and shall be maintained in this condition until application of bituminous material. The surface shall be smooth and free from waves and other irregularities. Unsatisfactory portions of base course shall be torn up, reworked, re-laid, and rerolled, at no additional expense to the Government.

D. Tolerances

1. The variation between any two contacts of the base course surface shall not exceed 1/2 inch in

10 feet. Any areas not complying with these tolerances shall be reworked to obtain conformity.

2. Width: Plan dimension, plus or minus 2 inches.

3. Thickness: Plan dimension, plus or minus 1/2 inch.

3.4 BITUMINOUS CONCRETE

A. Apply bituminous material only when air temperature is 50 degrees F or higher; when trail or walk surface is dry, free of frost, snow, or ice; and when precipitation is not imminent.

B. Temperature of bituminous concrete shall not be less than 225 degrees F at the time of placement.

C. Place bituminous concrete to obtain required compacted thickness as shown. Roll surface with hand operated or power roller. Acceptable density of the in-place bituminous concrete pavement shall be 90 percent of the optimum values as determined from the job mix formula.

D. The variation between any two contacts with the surface shall not exceed 1/4 inch in 10 feet. Correct any bumps or depressions exceeding the specified tolerance by removing the defective work and replacing with new material.

3.5 FINISH GRADING

A. After asphalt placement, grade edges and shoulders to the cross sections shown.

3.6 SURFACE PREPARATION FOR TRAFFIC MARKING

A. Permanent Traffic markings shall not be applied until the asphalt pavement has thoroughly cured.

B. Apply pavement markings in dry weather when pavement and atmospheric temperatures are fifty

(50) degrees F. or above and are anticipated to remain above fifty (50) degrees F. for four (4) hours after completing application.

C. Equipment for Paint: Commercial compressed air spray striping machine capable of applying an even coating at the manufacturer’s recommended thickness in an even width across the stripe. Or

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Commercial airless spray striping machine capable of applying an even coating at the manufacturer’s recommended thickness in an even width across the stripe. Paint on curbs can be brush or roller applied.

D. Layout markings using guide lines, templates and forms. Stencils and templates shall be professionally made to industry standards. “Free hand” painting of arrows, symbols, or wording will not be allowed.

E. Thoroughly clean surfaces free of dirt, sand, gravel, oil and other foreign matter.

F. Protect adjacent curbs, walks, fences, and other items from receiving paint.

G. Apply marking paint at 13 to 15 mils wet (Approximately 110 to 125 sq. ft. per gallon).

H. Apply stripes straight and even in accordance with drawings.

I. Barricade marked areas during installation and until the marking paint is dried and ready for traffic.

3.7 NEW ACCESSIBLE SIGNS

A. Post: Drive base into earth leaving 2 inches above base. Slide post into anchor and bolt.

B. Sign: Install between 60 and 68 inches from the ground to the bottom of the sign.

3.8 REINSTALL INTERPRATIVE SIGNS

A. Reinstall at new location shown. Existing signposts shall be embedded into the soil to a depth to firmly support the sign.

3.9 SUBSTANTIAL COMPLETION AND FINAL INSPECTION

A. Before scheduling the final inspection, remove all tools, equipment, surplus materials, and rubbish.

Leave the area in a neat, clean, acceptable condition. At time of final inspection, project shall be thoroughly clean and ready for use.

B. Submit written certification that project, or designated portion of project, is substantially complete, and request in writing a final inspection. Contracting Officer will make an inspection within 10 days of receipt of request.

C. If the project is determined to be substantially complete, the Contracting Officer will prepare a list of deficiencies to be corrected before final acceptance and issue a Letter of Substantial Completion.

D. After all deficiencies have been corrected, a Letter of Acceptance will be issued.

END OF SECTION

D. Hardware: ASTM A307 with hot dipped galvanized finish.