Attachment 2 Statement of Work.pdf

United States Department of Agriculture Agricultural Research Service

STATEMENT OF WORK

Construction

Seal Cracks and Asphalt Pavement

Jamie Whitten Delta States Research Center

141 Experiment Station Road, Stoneville, MS 38776

Prepared by: Kevin Magee May 2025

1.0 PROJECT:

Project Title: “Seal Cracks and Asphalt Pavement” at the USDA ARS Jamie Whitten Delta States Research Center, 141 Experiment Station Road, Stoneville, MS 38776

2.0 PROJECT CONTACT PERSONS:

CONTRACTING OFFICER (CO): to be assigned

LOCATION POINT OF CONTACT (LPOC) Email: dwayne.jordan@usda.gov Dwayne Jordan Facilities Technician 662-686-5247

ADMINISTRATIVE OFFICER (AO) Email:

Vacant

CENTER DIRECTOR (CD) Email: brian.scheffler@USDA.gov Brian Scheffler Center Director 662-686-5454

ENGINEER PROJECT MANAGER (EPM) Email: kevin.magee@USDA.gov Kevin Magee, PE USDA, ARS, SEA Facilities 662-686-5289

3.0. SCOPE OF SERVICES:

The Contractor shall provide all professional services necessary for the accomplishment of the contract project and such required services shall be in accordance with requirements as described herein.

a. The Contractor shall provide services for the following tasks marked by an “X”:

[X] Provide a technical and cost proposal to complete the project as per project requirements listed in this SOW.

[X] Provide a list of at least 3 example projects of this nature performed in the last 5 years (including a customer point of contact for each project) with the bid package.

[X] Complete the project as per project requirements listed in SOW.

mailto:dwayne.jordan@usda.gov mailto:brian.scheffler@USDA.gov mailto:kevin.magee@USDA.gov

4.0 PROJECT REQUIREMENTS:

The Contractor shall furnish a technical and cost proposal to supply all materials, labor, equipment, and supervision necessary to clean and seal cracks in the existing asphalt pavement, patch any existing potholes, repair any base failures, and apply a 2-coat coal tar-based seal coat on all existing asphalt surfaces. The project is located at the USDA ARS Jamie Whitten Delta States Research Center, 141 Experiment Station Road, Stoneville, MS 38776.

a. The Contractor will work with COR to ensure project is accomplished in a timely manner.

b. Davis Bacon Act applies to all contracts in excess of $2,000. Employee payroll logs for the project will be required to verify wage rates are being adhered to.

c. Additionally, Payment and Performance bonds will be required for projects exceeding $35,000.

Obtaining and the cost of these bonds is the responsibility of the Contractor. Proof of Insurance is also required.

d. The Contractor is responsible for visiting the site prior to submitting a bid to observe existing conditions. No compensation will be provided for conditions that would be visible during an on-site visit for persons experienced performing this type of work.

4.1 Bid Schedule:

a. The Base Bid shall include all work described in 4.2 Description of Work.

4.2 Description of Work:

a. Background - The existing parking lot and roadway pavements for the JWDSRC in Stoneville were installed at various times from roughly 2000 to 2015 and is a mixture of predominantly Hot Mix Asphalt with a lesser amount of DBST. In total, there is approximately 40,000 S.Y. of pavement that is owned and maintained by USDA ARS. The asphalt surfaces are in relatively good repair but are in need of sealing to protect from water intrusion and oxidation. Moderate cracking has occurred with most of the cracks being 1” wide or less. The total linear footage of cracking at this time is estimated to be approximately 10,000 linear feet. The estimated amount mainly consists of cracking where perceptible gaps are present.

Existing cracks that are “tight” are to be addressed with the 2-coat coal tar based sealant application.

b. The objective of this project is to furnish materials, labor, equipment, traffic control, and supervision necessary to clean and seal cracking in the existing asphalt parking area and roadway and to seal the existing asphalt pavement with a 2-coat coal tar based sealant. Work will include thoroughly cleaning existing pavement cracking and using Crafco Roadsaver 211 hot applied self-leveling crack sealer material (or approved equal) and employing a pressure feed melter applicator using this Statement of Work as the controlling document for the work. Once crack sealing is completed, a 2-coat coal tar based sealant will be applied using this statement of work as the controlling document as well as all manufacturers’ recommendations.

c. The basis of design for the crack sealing material is Crafco Hot Applied Roadsaver 211. The roadways and parking lots will have pedestrian and slow moving traffic. This should be factored into the contractor’s work plan to achieve a satisfactory end product. To be considered an equivalent product, all proposed sealing material must meet the requirements of ASTM D6690 (AASHTO M324), “Joint and Crack Sealants, Hot-applied, for Concrete and Asphalt Pavements”, and Federal Specification SS-S-164. For cracks in excess of 1.5”, contractor is to submit a proposed product for approval. Specifications for cracks 1.5” or less are as follows:

d. The basis of design for the pavement sealing portion of this project is Sealmaster Coal Tar Concentrate SMT-100 pavement sealer. The mix design and application procedures in this Statement of Work are based on this material. If the contractor would like to propose an alternative equivalent material, mix designs and application procedures must be a part of the submittal as well as 3 example projects where the proposed material, mix design, and application procedures have been used successfully. To be considered an equivalent product, all proposed sealing material must meet the requirements of ASTM D 5727, RP 355e, ATSM D 490, ASTM D 6945, ASTM D 3320, ASTM D 4866/4866M.

The proposed equivalent material must also meet the following requirements when tested in accordance with ASTM D 140, ASTM D 466, ASTM D 490, ASTM B117, ASTM D 529, ASTM D 2939, and ASTM D 244 procedures. (see chart below)

e. The major items of work for the crack sealing portion of the project are as follows:

1. The facility will be occupied and in use during the life of the project. Contractor is to coordinate daily work areas with Location Point of Contact ahead of time so that proper notifications can be made to accommodate occupants. Contractor shall provide, erect, and maintain all necessary traffic control during cleaning, application, and curing.

2. Prepare and clean existing pavement cracks per manufacturer’s recommendations to include a final cleaning immediately prior to sealant installation using high pressure (90psi minimum) dry, oil-free compressed air to remove any remaining dust. Both sides of the crack or joint shall be cleaned. Surfaces should be inspected to assure adequate cleanliness and dryness.

3. Crafco Roadsaver 211 hot applied crack sealer (or approved equal) shall be applied preferably using a pressure feed melter applicator and performed and cured per manufacturer’s recommendations. Contractor shall select the appropriate crack sealing means and methods of application, curing regimen, and top dressing necessary to accommodate pedestrian and slow moving vehicle traffic. Contractor shall coordinate with the EPM and LPOC on opening a section of completed work to traffic.

f. The major items of work for the pavement sealing portion of the project are as follows:

1. The facility will be occupied and in use during the life of the project. Contractor is to coordinate daily work areas with Location Point of Contact ahead of time so that proper notifications can be made to accommodate occupants. Contractor shall provide, erect, and maintain all necessary traffic control during cleaning, application, and curing.

2. Contractor shall document all existing pavement markings to facilitate replacement.

3. Pavement sealing can only begin once crack sealing operations and curing are completed.

4. Prepare asphalt pavement surface by cleaning and removing all loose material.

5. Any existing potholes shall be patched using a commercially produced cold mix asphalt mixture containing crushed limestone or a hot mix asphalt material.

6. Base failures shall be repaired by full depth saw cutting perimeter, excavating existing material one foot deep and backfilling with compacted crushed limestone to a depth of 6 inches and topped off with compacted hot mix asphalt or a commercially produced crushed limestone cold mix asphalt. At this time, no base failures are apparent. This work item is included in the event a base failure develops before sealing begins. Contractor can base the bid on a quantity of zero. If base failures develop, a contract modification will be executed for the additional associated costs.

7. Sealmaster Coal Tar (or approved equal) emulsion shall be prepared using the following mix design and proportions: Coal Tar Concentrate – 100 gallons, Water – 40 gallons, 2lbs. of sand per gallon of sealer, and 3% latex.

8. Sealing emulsion shall be applied in 2 coats at a rate of 0.11 to 0.13 gallons per square yard (70-82 sq. ft. per gallon) per coat. Emulsion shall be applied by either pressurized spray application equipment or self-propelled squeegee equipment. Pressurized spray equipment shall be capable of spraying pavement sealer with sand added. The equipment shall have continuous agitation of mixing capabilities to remain homogeneous consistency of pavement sealer mixture throughout the application process. Self-propelled squeegee equipment shall have at least 2 squeegee or brush devices (one behind the other) to assure adequate distribution and penetration of sealer into bituminous pavement. Hand squeegees and brushes are only acceptable in small, irregular areas where equipment cannot reach. Both ambient and surface temperatures shall be a minimum of 50 degrees F for a 24 hour period during and after application. Contractor shall consult with LPOC and EPM on opening a section of completed work to traffic.

9. After the final seal coat is cured sufficiently, restore all pavement markings in exact location, color, type, width, etc. using commercially produced traffic pavement paint.

g. The Contractor shall be responsible to handle and dispose of debris at an off-site, certified disposal site consistent with all Local, State, and Federal requirements.

4.2.1 Pre-Construction Phase Services:

a. Pre-Construction Submittals

Prior to issuance of Notice to Proceed (NTP) the following submittals must be submitted to the Contracting Officer (CO) for approval:

1. Work Hours, per Section H.30 entitled, MAXIMUM WORKWEEK – CONSTRUCTION SCHEDULE. The work hours will include the daily starting and stopping time, and days of the week the Contractor proposes to carry out the work. Daily Facility hours are from 7:30a.m. to 4:30 p.m. excluding weekends and Federal holidays. Contractor shall submit a work schedule conforming to the times of operation listed above and list the anticipated completion date. If the contractor would like to propose alternate hours or days, the request must be made to the CO, copying the LPOC, CD, and EPM for approval.

Changes will be evaluated on a case by case basis. Approvals are not guaranteed.

2. All material submittals shall be forwarded to the CO & EPM for approval prior to the commencement of work. Submittals shall include manufacturer recommendation compliant means, methods, and application procedures for the material submitted.

Material application can only begin after submittal approval.

4. Quality Control Plan.

5. Site Specific Accident Prevention Plan/Safety plan complete with contact info and map to nearest emergency room and minor medical facility.

6. The construction contractor (CC) shall provide to the CO a list of contract personnel of the general and subcontractors, who will be emergency contacts, including addresses, and telephone numbers for use in an emergency. As changes occur and additional information becomes available, the CC shall update the list.

7. Waste Management Plan: No formal waste management plan is required, however the contractor must dispose of all waste in a legal manner at an off-site location.

4.3 Government Furnished Equipment\Services:

a. The Government will furnish a reasonable amount of electricity and water.

b. No access badges or keys are required for entry into the facility. Gates open and close automatically therefore the contractor must adhere to posted operation hours.

5.0 GENERAL REQUIREMENTS:

5.1 Permits:

Where governing regulations and imposed codes and standards require notices, permits, licenses, inspections, tests, and similar items or actions in order to lawfully proceed with the required work, the Contractor shall obtain items and take those actions in accordance with the regulations of the governing authority. The costs of such permits, licenses, inspections, etc., are the obligation of the Contractor.

5.2 Utility Severance Certificates:

Not required.

5.3 Installation Plan:

Submit a comprehensive installation plan, describing the proposed sequence, schedule, methods, equipment, storage requirements, and laydown areas.

5.4 Installation Schedule:

Contractor shall coordinate all work with Local Point of Contact and COR. All disturbances or disruptions of service as a part of work for this building shall be coordinated with the LPOC and COR to prevent jeopardizing on-going research.

5.5 Quality Control:

The work performed under this contract shall be subject to continuous audit by the COR. Quality control is the exclusive responsibility of the Contractor.

5.6 Protection of Work and Property/Safety Requirements:

a. The Contractor shall protect the work, the site, and all existing property and structures within the limits of the construction activities or that may be affected thereby until acceptance of the work.

Any damage to property shall be repaired at the Contractor’s expense to pre-damaged condition to the satisfaction of the COR.

b. Safety and health matters, as they relate to the work, are the exclusive responsibility of the Contractor. The Contractor shall furnish, erect, and maintain barricades, warning lights, signs, guards, or take other precautions as may be required by law or local authorities for the protection and safety of pedestrians and vehicular traffic.

c. The Contract Documents may not represent all current conditions at the site and adjoining areas.

The known conditions are as indicated and shall be compared with actual conditions before commencement of work. Any notable differences shall be memorialized in writing and brought to the attention of the LPOC and COR for further consideration.

d. Government will not furnish any labor or equipment to unload or move materials or supplies.

5.7 Hazardous material:

a. There is no indication of existence of hazardous materials.

5.8 Disposal of Waste Materials and Debris:

a. Dispose of waste, trash, and debris in a safe, acceptable manner, in accordance with applicable laws and ordinances and as prescribed by authorities having jurisdiction.

b. Burying of trash and debris on the site will not be permitted. Burning of trash and debris at the site will not be permitted.

c. Remove trash and debris from the site at frequent intervals so that their presence will not delay the progress of the work or cause hazardous conditions for workers and the public.

d. The contractor should make every effort to recycle as much of the waste as possible.

6.0 Temporary Facilities:

a. Temporary utilities (water and electricity) may be furnished to the Contractor by the Government, if so requested. The Contractor shall maintain and protect all such utilities during the course of construction and shall repair or replace any items damaged by contractor personnel or equipment.

b. Should the Contractor require any power or utility shutdowns during demolition, the Contractor shall obtain approval for such shutdown from the LPOC or COR three working days prior to the need.

6.1 Cleanup:

The work site shall be kept clean and free of debris at all times. Restore areas disturbed as nearly as possible to the original appearance and condition. Upon completion of the project, and prior to final inspection, the Contractor shall remove from the premises all unused material, trash, and debris resulting from the work to the satisfaction of the COR.

6.2 Final Payment/Contract Closeout:

The following documents are REQUIRED PRIOR TO FINAL PAYMENT (other documents may also be required):

a. Release of liens.

b. Release of Claims

c. Employee payroll\time sheets

d. Invoice

6.3 PROJECT SCHEDULE: The Contract time for this project is 90 calendar days from the notice to proceed. NTP will be issued at the mandatory preconstruction conference.

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