Attachment_1_-_SHEN_329990_SOW_BM_Pavement_Preservation.docx

SCOPE OF WORK

REPAIR BIG MEADOWS CAMPGROUND ACCESS ROUTES

SHENANDOAH NATIONAL PARK

PMIS 329990A – Repair Big Meadows Campground Access Routes

Item 1 - Description of Work

1.1 Background:

The existing roadways and campsite parking areas within Big Meadows Campground at Shenandoah National Park have experienced wear, including cracks wider than 1 inch, failing road edges, and potholes. This project involves a 2-inch mill and 2-inch overlay for approximately 2.2 miles of single-lane roads (average lane width: 13 feet) and resurfacing campsite parking areas. The work also includes pavement patching or sealing of cracks wider than 1 inch, road edges repairs showing signs of failure, and pothole repairs, according to VDOT standards. Asphalt depths vary between 2 to 8 inches.

1.2 Work Covered by the Contract Documents:

The project is located within Big Meadows Campground at Shenandoah National Park. The scope of work includes:

· A 2-inch asphalt overlay will be applied throughout the campground access routes, including sections that will be milled down 2 or 3 inches from the existing asphalt surface. Specific requirements are noted within the associated drawings and maps.

· Full depth patching, repairing road edges, and crack sealing cracks wider than 1-inch following VDOT Sections 212 and 315 as identified within the drawings. If additional marking of locations is required, COR will mark in the field utilizing red marking paint.

· Contractor shall apply tack coat prior to the Hot Mix Asphalt overlay on all surfaces, including milled and patched areas.

· Campsite parking areas adjacent to the access routes will receive treatment based on wear. Treatments may include but are not limited to: 1” asphalt overlay, slurry seal or fog seal unless otherwise noted within the drawings.

· All objects such as but not limited to wheel stops, trash receptacles, and dumpsters shall be removed and replaced in their original locations before and after pavement operations.

· Contractors shall provide pavement markings according to existing pavement markings throughout the campground after paving operations are complete. Precondition documentation will be the responsibility of the contractor.

· The associated maps and drawings identify sections by required treatments, typical and specific locations. Contractors shall confirm locations and information within drawings and specifications; any discrepancies shall be discussed with the CO/COR prior to executing the work.

· Upon completion of paving, provide at least 3:1 slope ratio of top soil backfill and Kentucky 31 grass seed along edges of pavement where the asphalt finish grade is 1-inch or greater above the existing grade.

· Adjustment of utilities to match final pavement elevations. (If applicable)

· Disposal of milled material according to environmental regulations.

Line Item Option

· A 2-inch asphalt overlay will be applied throughout the walkways within the campgrounds. This work will cover approximately 12,769 Square Feet of asphalt. The work will include backfilling along asphalt edges with topsoil and reseeding with Kentucky 31.

All work will be performed under a single contract. Work will be phased per “Old Campground” and “New Campground” (see sect 3.1). Maps and drawings have been provided in coordination with the scope of work for reference, field verification is the responsibility of the contractors.

Period of Performance:

The contractor shall complete all work within 365 calendar days from the Notice to Proceed, which includes up to 10 weather delay days. Due to peak visitation at the park, no work shall occur within the campground from the last week in September through the second week in November. A longer period of performance has been allowed in consideration for these restrictions and the winter months that are typical outside of paving “season”.

Item 2 - Existing Utilities

2.1 Existing Utilities:

The contractor must coordinate with the Contracting Officer (CO), Contracting Officer’s Representative (COR), and utility companies to locate and mark all utilities before starting any pavement or excavation work, including near patched areas.

2.2 Utility Damage:

The contractor is responsible for protecting all utilities during milling, patching, and paving activities. Any damage must be repaired at the contractor's expense.

Item 3 - Contractor's Use of Premises

3.1 Public Use of Site:

Big Meadows Campground is a high-traffic area for visitors. The contractor must minimize disruptions by phasing work on both roadways and campsite parking areas. See section 4.7 for traffic control requirements. The NPS will allow the closure of the campground(s) to allow for phased work. The phasing is intended to be as follows: the “old campground” will be closed for an estimated duration of three weeks to allow for contractors to work. Once the “old campground” has been completed, the “new campground” will then be closed for an estimated duration of three weeks.

3.2 On-Site Work Hours:

Work will generally take place between 8 a.m. and 5 p.m., Monday through Friday. Any work outside of these hours requires prior approval from the CO and COR. No Holiday or weekend work will be permitted.

3.3 Limits of Construction:

The limits of construction are defined as being within 12 inches of the edge of the asphalt, as indicated in the mapping. Areas along and outside the limits of proposed work must be protected and maintained in their original condition. No activity is permitted outside the limits of work without written approval from the Contracting Officer (CO). Any damage occurring outside the limits shall be repaired, and the area restored to its previous condition at the contractor's expense. All repair efforts must be approved by the CO. Associated maps and drawings are provided as reference, all measurements are the responsibility of the contractor prior to commencement of work.

Item 4 - Submittals The following submittals, based on VDOT standards, must be submitted to the Contracting Officer (CO) and Contracting Officer’s Representative (COR) via the CM-16 transmittal form.

4.1 Construction Schedule and Schedule of Values:

Submit a construction schedule detailing the sequence of operations for milling, patching, overlaying, and marking of both the roadways and campsite parking areas. Include specific timelines for crack repair, road edge restoration, and pothole patching. Provide weekly updates.

4.2 Asphalt Mix Design:

The Contractor shall submit a job-mix formula for each mixture planned for use on the project for NPS evaluation and approval through the “Producer Lab Analysis and Information Details” (PLAID) website. Paper copies of the job mix formula along with supporting documentation shall also be submitted to CO/COR. The job-mix formula shall be within the design range specified. The job-mix formula shall establish a single percentage of aggregate passing each required sieve, a single percentage of asphalt material to be added to the aggregate, a temperature at which the mixture is to be produced, and a temperature at which the mixture is to be compacted for SUPERPAVE testing in accordance with AASHTO R35.The mix design should account for existing asphalt depths (2 to 8 inches) and the suggested formulas for the associated application (overlay/patch repairs). Typical wear course throughout the park SM-9.5A. Include:

· Source of materials

· Job mix formula – including temperature ranges

· Aggregate gradation

· Asphalt binder properties

· Testing reports Placement temperatures shall meet the placement limitations under VDOT section 315.04.

4.3 Milling and Patching Plan:

Submit a plan detailing the milling and patching operations, including:

· Crack sealing methods for cracks wider than 1 inch, in line with VDOT Section 413.

· Road edge repair procedures for sections with failing pavement, following VDOT Section 315.

· Pothole patching techniques, including saw-cutting and removing damaged areas and filling with VDOT-approved asphalt.

· Disposal methods for waste material, per environmental regulations.

· Millings shall be tapered at both ends of asphalt sections to be milled starting from 0-inches to 2-inches to 2-inches. This will allow for the overlay to transition smoothly from existing asphalt to milled sections.

· Asphalt Cold Milling machines are required. Milling attachments will not be accepted All areas to be saw cut shall be straight, clean and uniform.

4.4 Tack Coat Specifications:

Submit tack coat specifications, including type, application rate, and compliance with VDOT Section 310. Tack Coat Asphalt tack coat shall be CQS-1h, CRS-1h, or CSS-1h conforming to Section 210 and selected from NPS Approved List 50.1. Asphalt emulsion CMS-2 conforming to Section 210 may be used during the winter months. The Contractor shall apply tack at the rate of 0.05 to 0.10 gal/yd². The Contractor shall allow the tack coat to properly cure and break before placement of the hot mix asphalt course. Ensure tack coat is applied evenly over the entire surface to be paved.

4.5 Compaction Testing Results:

Submit compaction testing results for the patched and overlay areas, including crack repairs, road edges, and potholes, in accordance with VDOT’s Section 315 – Asphalt Concrete Placement.

4.6 Pavement Markings:

Submit a plan for pavement markings, including reinstallation of parking space markings and any road striping required, following Manual on Uniform Traffic Control Devices (MUTCD) standards. Existing markings shall be documented prior to removal to ensure proper placement after paving has been completed. Epoxy paint, thermoplastic striping, and traffic paint are all acceptable applications.

4.7 Traffic Control Plan:

Traffic control is the responsibility of the contractor and shall consist of maintaining traffic and protecting workers through temporary work areas, maintaining public and private entrances, constructing and obliterating temporary traffic Diversions, providing positive guidance to the traveling public within the limits of the work area and over approved traffic Detours. All work shall be in accordance with the VWAPM, the MUTCD, and the Contract. The plan shall address traffic management for both the single-lane roads and campsite parking areas, ensuring safe and continuous access for visitors. In the event that work cannot be completed within the scheduled three-week closure, the contractor shall provide notice to the CO/COR immediately and at least two weeks in advance.

4.8 Environmental Protection Plan:

The Contractor shall exercise every reasonable precaution, including temporary and permanent soil stabilization measures, throughout the duration of the project to control erosion and prevent siltation of adjacent lands, rivers, streams, wetlands, lakes, and impoundments. Soil stabilization and/or erosion control measures shall be applied to erodible soil or ground materials exposed by any activity associated with construction, including clearing, grubbing, and grading, but not limited to local or on-site sources of materials, stockpiles, disposal areas, and haul roads.

Submit a detailed environmental protection plan covering dust control, erosion prevention, and stormwater management. Refer to the maps and drawings for specific locations of sediment and erosion control, additional measures may be required by NPS staff.

4.9 Material Certifications:

Submit certifications for all materials used (asphalt, tack coat, aggregates, and crack sealants), ensuring compliance with VDOT specifications.

4.10 Final As-Built Drawings:

Upon completion of the project, submit as-built drawings that document the final roadway configuration, patched areas, utility adjustments, and elevations. Ensure compliance with both VDOT and NPS closeout requirements. As-built documentation must be submitted within 30 days of the project completion date. All submissions should be made electronically in PDF format and in accordance with the specified file size limitations. Drawings should be clear, legible, and dimensionally accurate, including proper scale and notation. Show the locations and dimensions of all areas milled, including the total square footage. Indicate the depth of milling for each section. Document the locations, dimensions, and total area of all full-depth patching completed, including thicknesses applied. Indicate the specific locations and lengths of road edge repairs, noting any changes made from the original plans. Detail the locations of all crack sealing activities, including lengths and widths of cracks sealed. Indicate the type of sealing material used and the application techniques employed. Include high-resolution photographs showing as-built conditions for all components of the project. Images should be clearly labeled with the location, date, and description of what the photo depicts. Before and after images should be provided for visual comparison.

Item 5 - Accident Prevention Submit an Accident Prevention Plan (APP) tailored to the project, addressing hazards related to milling, patching, and paving in a public-use campground. The plan must meet VDOT and OSHA safety standards and include specific measures for worker and public safety.

Item 6 - Project Closeout

6.1 Intermittent Inspections:

Intermittent inspections may be conducted at any time by CO/COR to ensure quality control. If at any time an inspection or workmanship or product does not meet the specifications, the contractor shall correct and repair any failed inspections at no additional cost to the government.

6.2 Final Inspection:

Request a final inspection with the CO/COR upon project completion. Attendees shall include but are not limited to the following key personnel: Prime contractor project manager, site superintendent and subcontractor leads, NPS COR and other subject matter experts as needed. All work, including patching, overlaying, and pavement markings, must meet both VDOT and NPS standards. A punch list of deficiencies, if applicable, must be addressed within 30 calendar days.

6.3 Warranty:

Provide a one-year warranty for all work, including patched areas, materials, and workmanship, in accordance with VDOT standards.

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