24-0012 Scope of Work.pdf

Scope of Work New River Multi-Area Asphalt Repairs

Project # 24-0012

GENERAL DESCRIPTION:

Sawcut and remove damaged asphalt in various locations on MCAS New River. Replace with new subgrade, new stone base, and new asphalt. Also provide cast-in-place pipe where noted.

DETAILED REQUIREMENTS:

1. CONTRACTOR IS TO REMOVE AND DISPOSE OF ALL EXISTING ASPHALT AND ABC STONE WITHIN THE

DESIGNATED AREAS FOR REPAIR.

2. COMPACT THE SUBGRADE TO A DENSITY EQUAL TO AT LEAST 98% OF THAT BY COMPACTING A SAMPLE OF MATERIAL IN ACCORDANCE WITH AASHTO T99. ENSURE THE SUBGRADE IS STABLE PRIOR TO PLACEMENT OF STONE. IF ANY UNDERCUT IS REQUIRED TO STABILIZE THE SUBGRADE, ALL STRUCTURAL

FILL MATERIAL MUST BE TESTED AND APPROVED BY A GEOTECHNICAL ENGINEER FOR USE.

3. INSTALL THE NEW PAVEMENT SECTION PER PLAN.

a. LIGHT DUTY: INSTALL 8 INCHES OF ABC IN A MINIMUM OF TWO (2) 4 INCH LIFTS. COMPACT ALL

ABC STONE TO A DENSITY EQUAL TO AT LEAST 98% OF THAT BY COMPACTING A SAMPLE OF

MATERIAL IN ACCORDANCE WITH AASHTO T99. ALL ABC STONE MUST CONFORM TO NCDOT

STANDARDS. INSTALL 2 INCHES OF RS-9.5C SURFACE MIX ASPHALT PAVEMENT. COMPACT TO A

MINIMUM DENSITY OF 92% ON THE MAT AND 90% ON JOINTS.

b. HEAVY DUTY: INSTALL NON-WOVEN GEOTEXTILE PRIOR TO PLACEMENT OF STONE. OVERLAP ALL JOINTS A MINIMUM OF 18 INCHES. INSTALL 12 INCHES OF ABC IN A MINIMUM OF TWO (2) 6 INCH LIFTS. COMPACT ALL ABC STONE TO A DENSITY EQUAL TO AT LEAST 98% OF THAT BY

COMPACTING A SAMPLE OF MATERIAL IN ACCORDANCE WITH AASHTO T99. ALL ABC STONE

MUST CONFORM TO NCDOT STANDARDS. INSTALL GEOGRID AS SHOWN IN DETAIL B ON SHEET

C501. INSTALL 2.5 INCHES OF RI-19.0C INTERMEDIATE ASPHALT PAVEMENT, FOLLOWED BY 1.5

INCHES OF RS-9.5C SURFACE MIX ASPHALT PAVEMENT. COMPACT EACH LIFT TO A MINIMUM

DENSITY OF 92% ON THE MAT AND 90% ON THE JOINTS.

4. PROVIDE ALL JMF, PRODUCT DATA, CERTIFICATES, AND TEST REPORTS TO TEH GOVERNMENT FOR

APPROVAL.

5. RESTRIPE ALL NEW ASPHALT TO MATCH EXISTING.

6. INSTALL CAST IN PLACE PIPE LINER IN THE 12" RCP SECTION SHOWN ABOVE BETWEEN THE MANHOLE

AND THE DROP INLET. APPROXIMATELY 50 LF. (Site 4 only)

GENERAL NOTES:

1. Contractor shall locate all underground utilities, including telecommunications and commercial cabling, prior to ground disturbing activities.

2. Contractor shall field verify all measurements.

3. Preserve and protect all existing utilities, including telecommunications and commercial cabling.

4. Contractor is responsible for any damage to utilities, including telecommunications and commercial cabling.

5. Contractor is responsible to coordinate commercial cabling with commercial cabling providers

6. All utility work shall be in accordance with applicable state and local codes.

7. Contractor shall coordinate all construction activities with ROICC, I&E, and base utilities.

8. Sod any disturbed areas upon completion of construction.

9. Jobsite shall be kept clear of all debris and trash.

10. Contractor shall be responsible for all aspects of environmental, health and safety (EHS). Contractor shall be responsible for complying with its policies and procedures related to EHS matters.

ENVIRONMENTAL NOTES:

1. ALL SOILS, STONE, AND PAVEMENT TAKEN OFF BASE MUST BE TESTED FOR PFAS PRIOR TO REMOVAL FROM THE INSTALLATION. ALL PFAS IMPACTED SOILS, STONE, AND PAVEMENT MUST BE DISPOSED OF

AT A LINED AND PERMITTED SUBTITLE D LANDFILL.

2. CONTRACTOR AND ALL SUBCONTRACTORS AND THEIR EMPLOYEES MUST OBTAIN 3R UXO SAFETY

AWARENESS TRAINING PRIOR TO BEGINNING WORK.

3. IF GROUNDWATER IS ENCOUNTERED DURING EXCAVATIONS, PER DEPARTMENT OF NAVY POLICY, GROUNDWATER IMPACTED ABOVE 70 PPT PFOA AND/OR PFAS MUST BE TREATED TO BELOW 70 PPT

PRIOR TO RELEASE.

4. REFER TO ENVIRONMENTAL STANDARD OPERATING PROCEDURES 5090.10.2 FOR ADDITIONAL

GUIDANCE.

TRAFFIC CONTROL NOTES:

1. ALL ROADS AND ENTRANCES MUST MAINTAIN AT LEAST 1 LANE OF TRAVEL OPEN AT ALL TIMES, WITH THE EXCEPTION OF SITE 10 SCHMIDT STREET AND CURTIS ROAD INTERSECTION. PROVIDE PROPER SIGNAGE AND FLAGGERS AS NEEDED. COORDINATE ANY LANE AND ROAD CLOSURES WITH THE ROICC AND MCAS NEW RIVER I&E 15 DAYS IN ADVANCE OF THE CLOSURE. SIDEWALKS TO SCHOOLS/CDC

MUST REMAIN OPEN.

2. ACCESS TO THE BASE SCALES (SITE 8) MUST BE AVAILABLE AT ALL TIMES.