A04_SOW_and_SPECS.pdf

DESCRIPTION/SPECIFICATIONS/STATEMENT OF WORK 000001-1

Description/Specifications/Statement of Work

GENERAL SPECIFICATIONS

CAPE COD NATIONAL SEASHORE

PAVEMENT MAINTENANCE

MACPHERSON WAY, EASTHAM MA

1.1 SCOPE OF CONTRACT

This project will extend the service life of existing pavement on MacPherson Way.

MacPherson Way is a government owned roadway within the town of Eastham, Ma.

This project includes fog sealing the roadway surface and two bid options to seal and fill cracks in the roadway for the areas indicated.

A. Work shall be performed in accordance with this Statement of Work, Specification Sections 32 12 16.13 (Asphalt Fog Seal and Blotter) and 32 01 17.61 (Sealing and Filling Cracks in Asphalt Paving), as well as the contract drawings.

The following is a description of work items:

Base Bid: FOG SEAL – Remove surface debris and prepare surface for fog seal. Remove sand and debris along roadway and roadway edge to uncover the roadway.

Completely cover prepared paved areas with fog seal in a uniform and consistent manner. Contractor shall submit fog seal surface mix design and manufacturers recommended application rate to the CO and COR for approval. Protect curbs, gutters, and swales from any contact with the coating material. Small Pavement cracks that are 1/2-inch wide or less shall be thoroughly blown out and cleaned prior to fog sealing. All vegetation shall be removed from all cracks prior to fog sealing. When crack sealing is performed under option 1 and/or option 2, allow full drying of sealed cracks before start of micro surface work. Protect curbs, gutters, and swales from any contact with the coating material.

Option 1: CRACK SEALING AND FILLING – prepare area. Crack seal and crack fill.

The area is shown on drawing S-1, Option 1 Crack Seal.

Option 2: CRACK SEALING AND FILLING - prepare area. Crack seal and crack fill. The area is shown on drawing S-1, Option 2 Crack Seal.

DESCRIPTION/SPECIFICATIONS/STATEMENT OF WORK 000001-2

Unless otherwise specified, sealant for cracks shall be CRAFCO 34-200 (PARKING LOT SEALANT) or approved equal, submit material specifications to the CO for approval at least two weeks before commencement of work. All materials shall be applied according to manufacturer specifications.

A single crack may vary greatly in width, and two methods shall be used on a single crack if the crack has two distinct segments, both of which are at least four feet in length that meets two crack criteria as listed above. Cracks that vary in width and therefore meet two criteria above, but the shorter segment is less than four feet, shall be treated according to the criteria of the longest segment of the crack.

No adjustment in payment shall be made for cracks that exhibit short sections of widening near the edge.

1.2 PROJECT LOCATION

A. MacPherson Way is property of the Cape Cod National Seashore and is located within the town of Eastham Massachusetts. See title sheet T-1 and S-1 for pavement location and planned work.

1.3 SITE INFORMATION AND LIMITATIONS

A. The paved areas may be partially closed when needed and approved by the Cape Cod National Seashore. The Contractor must notify the Cape Cod National Seashore 14 days in advance of work. The Contractor will be responsible for signing and limiting public access.

B. Contractor shall be responsible for scheduling work, coordinating work, installing signage and barricades, limiting foot traffic, traffic control, and protection of the sealant until properly cured.

C. Cape Cod National Seashore will notify the occupants at 5 MacPherson Way and 25 MacPherson Way of the proposed start date.

D. Utilities are not available at the site for construction purposes.

E. Notify the COR prior to all site visits.

1.4 TRAFFIC CONTROL AND CONSTRUCTION SIGNING

A. No work that endangers, interferes, or conflicts with traffic or access to work sites shall be performed until a plan for satisfactory warning and handling of traffic has been submitted by the contractor and approved by the COR. Construction signing for traffic control shall conform to the Manual of Uniform Traffic Control Devices (MUTCD).

Plan submission is required at least 14 days prior to staring work on site.

1.5 DISPOSAL OF DEBRIS

A. Requirements: Debris shall become the property of the Contractor. Disposal of materials in a legal manner and payment of fees required is the Contractor's

DESCRIPTION/SPECIFICATIONS/STATEMENT OF WORK 000001-3

responsibility. Sale of material onsite is not allowed unless authorized in writing by the Contracting Officer. If hazardous materials are encountered, comply with applicable federal, state, and local regulations, laws, and ordinances concerning removal, handling, and protection against exposure or environmental pollution. Burning of removed materials is not permitted on the work site.

1.6 WORK CAMPS, STAGING AND STORAGE AREAS

A. Areas for staging operations and storage of materials shall be approved by the COR.\

1.7 PERSONNEL SUPPORT AND SANITATION FACILITIES

A. The contractor shall provide personnel support facilities including but not limited to:

1. Drinking water,

2. First aid facilities,

3. Sanitary facilities,

4. Trash removal, and

5. Coordination with emergency medical services.

1.8 INSPECTION OF WORKSITE

A. The contractor acknowledges they have taken the necessary steps to ascertain the nature and location of work and have investigated and satisfied themselves as to the general and local conditions that can affect the work or its cost. Any failure of the contractor to take the actions described and acknowledged in this paragraph will not relieve the Contractor from the responsibility of estimating properly the difficulty and cost of successfully performing the work, or for proceeding to successfully perform the work without additional expenses to the government.

1.9 ENVIRONMENTAL

A. Guard against contamination of topsoil, any earthen material, groundwater, surface water, and air from oil, fuel and other fluid spills; from vehicle emissions; from garbage, waste and other debris; and from any other spills, leaks, discharges or releases of hazardous materials, hazardous wastes or other wastes.

1. Remediate and correct all environmental damage resulting from any such release, discharge, spill or leak occurring during the course of the Work, in accordance with applicable laws and with requirements of agencies having jurisdiction over such matters including, without limitations, Massachusetts Department of Environmental Protection (MassDEP).

B. Service all equipment in areas designated and previously accepted by the Contracting Officer or the Contracting Officer’s Representative.

C. Maintain all equipment to prevent leakage of oil, fuel or other fluids and to prevent

DESCRIPTION/SPECIFICATIONS/STATEMENT OF WORK 000001-4

unacceptable levels of emissions.

D. Collect, remove and properly dispose of all trash, garbage, debris, used oil, contaminated soil, and other waste materials off site at an approved disposal area, in a manner which complies with all applicable state and federal regulations.

E. Comply with all applicable federal and state laws and regulations during the Work, including, but not limited to Mass DEP Rules and Regulations, including, but not limited to, those pertaining to the handling and storage of fuel, oil, other liquids, and all other hazardous materials, hazardous wastes and other wastes used, stored, released, discharged, spilled or leaked in, on, or near the property of the government and adjacent private property.

1. This includes, but is not limited to, the acquisition of and compliance with any permits required by applicable law with respect to the Work, such as permits for releases under the Resource Recovery and Reclamation Act (RCRA) or the Clean Water Act or the Clean Air Act.

F. Establish and maintain dust control and erosion control during the contract time as directed by the Contracting Officer’s Representative as specified herein, and as required by regulatory agencies.

G. Provide all equipment and personnel necessary to meet the requirements of this responsibility.

H. Prior to bringing any potentially hazardous material onto the site, provide the Safety Data Sheet (SDS) for that product to the Contracting officer and obtain approval for its use.

1. The Contractor is strongly encouraged to use only products that do not generate hazardous materials in their waste form.

2. Comply with all manufacturer's directions and all of the applicable rules and regulations pertaining to the handling and disposing of such material.

I. Maintain a file of SDS information on site which shall be available to the Contracting Officer and COR. and available for inspection by proper authorities at any time.

J. At the completion of the project, provide the SDS information, including quantities used, to the Contracting Officer and a copy to its representative for record retention.

The Contractor shall provide an estimated quantity before any onsite work begins as a formal submittal.

K. Be responsible for providing training of those employees meeting the definition of a "hazmat employee" in 49 CFR Part 171.

L. Report to the Contracting Officer and its Representative any product, chemical, or waste releases which occur during the course of the contract which are not large enough to require government reporting under CERCLA or SARA.

1. Report all releases required to be reported under applicable laws.

DESCRIPTION/SPECIFICATIONS/STATEMENT OF WORK 000001-5

1.10 CONTRACT TIME

A. 45 Calendar Days from Notice To Proceed

1.11 SPECIFICATIONS

A. Specifications 32 12 16.13, ASPHALT FOG SEAL AND BLOTTER and Section 32 01

17.61 - SEALING AND FILLING CRACKS IN ASPHALT PAVING (Option 1 and Option 2)

1.12 DRAWINGS

A. Sheet T-1, Title Sheet.

B. Sheet S-1 MacPherson Way New Work

--END OF SECTION--

SECTION 32 12 16.13 - ASPHALT FOG SEAL AND BLOTTER

PART 1 - GENERAL

1.1 DESCRIPTION

A. This work includes constructing a blotter and asphalt fog seal without aggregate, specifically adapted for lightly used residential roadways.

PART 2 - PRODUCTS

2.1 MATERIALS A. Blotter - Furnish sound durable particles of gravel or crushed stone conforming to the following:

1. Material passing 3/8-mm sieve, AASHTO T 27 100%

2. Liquid limit, AASHTO T 89 25 max.

3. Free of organic matter and clay balls B. Emulsified Asphalt - Emulsified asphalt for fog seals shall meet the requirements of AASHTO M140 or M208. An equivalent anionic grade emulsion may be substituted for a cationic grade and vice versa. The sieve test in AASHTO M 140 and M 208 is not required.

4. Anionic emulsions. Conform to AASHTO M 140. For RS-1h and RS-2h, conform to AASHTO M 140 for RS-1 and RS-2, except conform the following for the penetration on the residue. Ductility, 77 °F, 2 inches/min, AASHTO T 51 40 mm min.

5. Cationic emulsions. Conform to AASHTO M 208. For CRS-1h and CRS-2h, conform to AASHTO M 208 for CRS-1 and CRS-2, except conform to the following for the penetration on the residue. Ductility, 77 °F, 2 inches/min, AASHTO T 51 40 mm min. C.

Water. Conform to the following:

6. Water for earthwork, pavement courses, dust control, and incidental construction. Furnish water free of substances detrimental to the work.

PART 3 - EXECUTION

3.1 ASPHALT FOG SEAL

A. Equipment

1. Asphalt distributor. a) Capable of heating asphalt evenly; b) Adjustable full circulation spray bar to 12-foot width; c) Positive controls including tachometer, pressure gauge, volume measuring device, or calibrated tank to uniformly deposit asphalt over the full width within 0.01 gallons per square yard of the required rate; and d) Thermometer for measuring the asphalt temperature in the tank.

B. Surface Preparation. Clean the existing surface of all loose material, dirt, or other deleterious substances by approved methods. When the surface is concrete, remove excess joint and crack filler.

C. Weather Limitations. Apply asphalt fog seal on a dry, unfrozen surface when the air temperature in the shade is above 40 °F and rising to ensure optimal curing time.

D. Fog Seal. A fog seal consists of applying slow-setting emulsified asphalt diluted with water onto an existing asphalt surface. Apply the diluted emulsified asphalt at a rate of 0.08 to 0.12 gallons per square yard, depending on the condition of the existing surface. Allow the fog seal to penetrate undisturbed for at least 2 hours or until the emulsified asphalt breaks and is substantially absorbed into the existing surface. Then lightly cover remaining spots of excess asphalt with blotter before opening the surface to traffic, using minimal blotter to prevent unnecessary material buildup.

E. Asphalt Application. Calibrate the asphalt distributor spray bar height, nozzle angle, and pump pressure and check longitudinal and transverse spread rates before application and as needed throughout the project according to ASTM D 2995. If different asphalt distributors are used, calibrate each before use on the project. Ensure that the length of the spread is no more than can be covered with blotter immediately after application. Protect the surfaces of nearby objects to prevent spattering or marring. Spread building paper on the surface for a sufficient distance from the beginning and end of each application so the flow through the distributor nozzles may be started and stopped on the paper. The Contracting Officer (CO) will approve the exact application rate, temperature, and area to be treated before application and may make adjustments for variations in field conditions. Apply the asphalt uniformly with an asphalt distributor. Move distributor forward at the proper application speed at the time the spray bar is opened. Use care not to apply excess asphalt at the junction of spreads. Correct skipped areas or deficiencies. Remove and dispose of paper or other material used.

F. Spraying Temperature 70-140 degrees F

G. Mixing Temperature 70-140 degrees F

H. Protect the surfaces of curb, gutter, catch basins, and utility covers to prevent spattering or marring. Clean surfaces to the satisfaction of the CO.

END OF SECTION 32 12 16.13

CACO 32 01 29.63- 1

PARTIAL DEPTH PATCH REPAIR

SECTION 32 01 17.61 - SEALING AND FILLING CRACKS IN ASPHALT PAVING

PART 1 - GENERAL

1.1 DESCRIPTION

A. This work consists of sealing cracks and joints.

B. The work covered under this item shall consist of performing all operations and furnishing all materials, labor, and equipment necessary for preparing, cleaning, drying, and sealing cracks in the existing. Vegetation removal from cracks shall be completed where necessary.

1.3 DEFINITIONS

A. Crack Seal: Cracks having an average width between 1/2" to less than 1".

B. Crack Fill: Cracks having an average width between 1" to less than 2".

1.4 SUBMITTALS

A. Contracting Officer (CO) approval is required for submittals listed below before performing and installing any crack seal or crack fill treatment.

1. Product installation data;

2. Certified test reports for sealant materials, performance graded asphalt binder, and fiber;

3. Cover materials

4. Crack fill material, source and location

5. Installation Method and sequencing plan

PART 2 - PRODUCTS

2.1 MATERIALS

A. Conform to AASHTO M 20, M 226, or M320.

B. Blotter

1. Cover materials to eliminate tracking from traffic shall be stone screenings, crusher dust, slag, an approved liquid, or other material found to prevent adhesion of the crack sealer to tires or pedestrians, not causing excessive dusting, and approved. The contractor shall submit shop drawings, to include product information, installation information and MSDS, for the cover materials to be used.

C. Sealants, Fillers, Seals, and Sleeves. Conform to the following:

1. Joint sealants and crack fillers. Furnish a commercial certification identifying the batch and lot number, material, quantity of batch, date and time of manufacture, and the name and address of the manufacturer.

a) Concrete joint-sealer: AASHTO M 173 hot-poured elastic type

b) Joint sealants, hot-poured: ASHTO M 301 for rigid and asphalt pavement

c) The sealing compound: AASHTO M324, Type II

d) For proprietary asphalt-rubber products: Documentation of binder, rubber content, modifier, and additives must be provided;

e) Multi-component joint sealant, conforming to TT-S-00227E, type I, class A or ASTM C 920, type M, grade P, class 25, use T. Provide sealant matching the color of the adjacent sidewalk. Conform to the sealant manufacturer's recommendations for use of primers.

f) Flexible cellular joint filler ASTM D 1056, type 2, grade 4 or 5

D. Water for dust control, and incidental construction must be free of detrimental substances.

E. Mineral Filler shall conform to AASHTO M 17.

PART 3 - EXECUTION

3.1 EQUIPMENT

A. Equipment used in the performance of the work required by this section of the specification shall be subject to approval and maintained in a satisfactory working condition at all time.

1. Power saw and blades. Saw and blades of such size and configuration that saw cuts can be made with one pass. Spacers are not allowed.

2. Hot-compressed air lance. A lance capable of providing clean, oil-free compressed air at a volume of 100 cubic feet per minute at a pressure of 120 pounds per square inch and at a temperature of 2000 °F.

3. Application wand. A crack sealant applicator wand attached to a heated hose that is attached to a heated sealant chamber. The temperature controls shall maintain temperature of the sealant within manufacturer's tolerances.

4. Heating kettle. An indirect-heating-type double boiler with the space between the inner and outer shells filled with oil or other heat transfer medium capable of constant agitation. Provide an accurate and calibrated thermometer having a range from 200 to 600 °F in 5 °F graduations. Locate the thermometer such that the temperature of the joint sealant may be safely checked.

5. Squeegee. A hand-held squeegee for ensuring that the crack is filled to the existing surface.

3.2 CONSTRUCTION

A. General

1. Saw Cutting and Joint Sealing - Saw cut, clean, and seal joints in a continuous operation. Either dry or wet cutting is allowed.

Clean dry-sawed joints with a stream of air sufficient to remove all dirt, dust, or deleterious matter adhering to the joint walls or remaining in the joint cavity. Blow or brush dry material off the pavement surface.

Clean wet-sawed joints with a water blast, 50 pounds per square inch minimum, immediately after sawing to remove any sawing slurry, dirt, or deleterious matter adhering to the joint walls or remaining in the joint cavity. Immediately flush all sawing slurry from the pavement surface. Blow wet-sawed joints with air to dry joint surfaces.

Do not allow traffic to knead together or damage the sawed joints. If cleaning operations cause interference with traffic, provide protective screening.

Place the sealant when the pavement surface temperature is 40 °F or higher.

Discontinue operations when weather conditions detrimentally affect the quality of forming joints and applying sealants.

Submit a copy of and adhere to the manufacturer's recommendations for heating and applying the joint sealant. Heat the joint sealant in a heating kettle. Do not heat the sealant above the safe heating temperature recommended by the manufacturer. Do not hold the material at the pouring temperature for more than 6 hours and do not reheat the material.

Place a bond breaker tape designed for use with hot-poured sealant in the bottom of the saw cut joint.

Seal the joints with an applicator wand when the sealant material is at the pouring temperature. Heat or insulate the applicator wand to maintain the pouring temperature of the sealant during placing operation. Return the applicator wand to the machine and recirculate the joint sealant material immediately after sealing each joint.

Seal each joint such that, after cooling, the level of the sealant is no more than 1/8 inch below the pavement surface, but not above the pavement surface. Use a squeegee to ensure that a 3-inch wide band is centered on the finished sealed crack.

Wait for the sealant to be tack free before opening the joint to traffic. Do not spread blotter on the sealed joints to allow early opening to traffic.

2. No crack sealing or filling material shall be applied in wet cracks or where fog, frost, and snow or ice is present nor when the ambient temperature is below 40 deg. F. All cracks are to be dried prior to material application.

3. A hot air lance shall be utilized to remove dirt, debris, vegetation, and moisture, just prior to installation of the crack sealant or filler. Loosened fragments encountered while cleaning shall be removed. The hot air blasting shall be conducted in two steps. The first pass shall be made along the crack in a steady fashion and should clean and heat but not burn the surrounding pavement. The second pass of the hot air lance shall completely remove all debris and particles.

4. In areas where hot poured joint material was previously used and where bond has broken, that area shall be cleaned prior to sealing or filling. After the cleaning of the cracks, all material removed from the cracks shall be removed from pavement surface by means of power sweepers, hand brooms or air brooms, to the satisfaction of the CO.

B. Crack Sealing

1. Crack sealing will be applied to cracks where the average crack width is greater than 3/16 inch and less than 1 inch. Cracks with widths less than 3/16 will not be sealed. Cracks shall be cleaned to make a sealant reservoir to the depth of the crack or at least 3/4 inch deep. Cracks greater than 3/4 inch deep shall have backer rod. Backer rod shall be placed to seal the full-width of the crack, multiple sections may be required. Cracks shall not be "over-filled" by more than 1/16 inch. Checking for bond shall be conducted a minimum of 24 hours after the installation of the sealant, by attempting to peel the "cooled" material from crack channel by manual methods. In areas with insufficient bond the sealant shall be removed and re- sealed, at no additional cost to the NPS.

2. The crack sealant material shall be applied with the nozzle in the crack channel, so that the channel is filled from the bottom up and air is not trapped beneath the material to a slightly overfilled condition and then leveled with a squeegee in a 3 inch to 4 inch width band across the crack with a thickness of 0.06 inch to 0.10 inch. After cooling, the level of the sealant shall be no more than 1/8 inch below the pavement surface.

Cracks with insufficient quantity shall be re-sealed in accordance with the specification requirements, at no additional cost to the NPS.

3. The blotter material shall be applied immediately after finishing and in a thin layer fully covering the exposed treatment material.

4. Spilled or excess material shall be removed from the pavement surface.

5. If flushing solvents are utilized, the operator must ensure that they do not contaminate the sealant or filler materials.

C. Crack Filling

1. Cracks where the average crack width is greater than 1 inch and less than 2 inches shall be filled with hot asphalt concrete. The mix shall be composed of performance-graded asphalt binder and fine aggregate conforming to AASHTO M 320.

2. The depth of the mix placed shall match the existing bound pavement depths and shall be compacted flush or a maximum of 3/16 inch below the surface of the existing pavement. The crack filled area shall subsequently be crack sealed as specified above and over-banded by a minimum of 1 inch on either side of the filled crack.

The finished band width shall not exceed 4 inches and the crack should not be "over-filled" by more than 1/16 inch.

END OF SECTION 32 01 17.61