A2-SOW_3_28_19.pdf

STATEMENT OF WORK

Reclaim Barrier Pit

JKSE182403

6 April 2019

GENERAL:

This statement of work defines the services to be performed in the fulfillment of this contract.

The work consists of furnishing all professional services materials, equipment and supervision to demo and reclaim the Aircraft Arresting System tape tube and fairlead beam, at the Montana Air

National Guard/Great Falls International Airport, Great Falls, MT. This work will take place on an active commercial airfield which will require FAA badging and Airfield Driver Training.

General

The contractor shall maintain the construction site in as clean and orderly condition as possible.

All refuse and/or salvage material shall be gathered and disposed of daily to maintain the site in this condition. Any debris that blows off the site into surrounding areas must be removed daily.

All refuse, debris and construction waste shall be legally disposed of off Government property at the contractor’s expense.

Any damage done to government or airport property will be the responsibility of the contractor to repair or replace. Methods will be approved by the government. The area immediately surrounding the project will be returned to existing conditions if disturbed. The following outline of the principle features of work does not in any way limit the responsibility of the contractor to perform all work and furnish all materials to do a complete job within the intent and scope of the contract. The contractor shall provide all materials and labor, to complete the job as intended. All work must be in accordance with all applicable codes and standards. All OSHA standards must be adhered to.

PROJECT WORK

Contractor shall provide all the necessary work to for the following items:

CLIN 0001- Project Work - This work will be paid as a Lump Sum (LS).

A. Weld existing trough end box lids in place.

B. Demo of fairlead beam concrete and paving at runway edge.

C. Removal of arresting barrier system sign bases.

D. Excavating/Removing tape tubes and supports.

E. Clearing vegetation, stripping topsoil.

F. Grading raised area to match surrounding area.

G. Replacing topsoil.

H. Reseed disturbed areas by drill seeding or broadcasting seed and rolling, a tackifier is required on all seeded areas.

I. Capping barrier pit penetrations at roof top and sealing precast roof slab joints

J. Asphalt removal and patching at the three other previously removed arresting barriers.

Note: See below for further description of the project work.

CLIN 0002: Contractor Manpower Reporting Act (CMRA)- The Contractor shall report all required item into the CMRA system during the project duration. This work will be paid as a Lump Sum (LS).

Work will be accomplished with IAW standard specifications and drawings included in this project package.

Changes and/or modifications must have prior approval from the Contracting Officer. The

Contractor is responsible for ensuring proper documentation is received for personnel and vehicle passes in time to avoid any delay in project start of performance. This includes personnel attainment of contractor badges and proper advance notification to a Montana Air National Guard

Civil Engineer Squadron representative for scheduling of escort support.

This will work will occur on the edge to Great Fall International Airport’s main runway, Rnwy

03/21 and subject to limited work periods and mandatory clean up procedures listed below.

Utility locates

1. GTF Airport authorities and FAA personnel will locate all utilities in the work areas.

Contractor needs to request locates in writing 3 days prior to work starting.

Work Hours:

All barrier removal work will be inside the Rnwy 03/21 clear zone will need to be accomplished between the hours of 12:00 AM and 5AM Monday – Friday.

The start date for this project is July 22, 2019.

Clean up:

Must be accomplished at the end of each work day.

1. All equipment must be returned to the staging area and work site left in the condition as specified in the project description below.

2. All FOD (Foreign Object Debris) removed from the work areas by sweeping and other means.

3. No more than a 3” surface deviation can with the Rnwy 03/21 Clear Zone Area,

4. Any bridging or other material used as a temporary surface to meet the 3” surface deviation requirement shall be designed to withstand a fully loaded Airbus 300 Aircraft with a maxim weight of 365,000 lbs.

As-Builts

1. Upon completion of the work the Contractor shall submit 2- CD Copies of the project as-builts in a CAD format and pdf format. These as-builts shall clearly depict and document any changes to the project plans thru measurements, pictures, and note changes.

PROJECT WORK ITEMS DETAILS:

A. Weld existing trough end box lids in place.

The Contractor shall weld down the four existing trough plates to the existing pit frame with

SMAW 7018 - ¼ x ¼” fillet welds in a skip pattern consisting to 1 inch long weld every 6 inches entirely around each plate to the pit frame and 1” of weld on each side of each corner. The weld area shall be prepared by grinding away any paint and rust to provide clean metal to weld to. All welds shall be primed and painted to match the existing color with spray paint.

B. Demo fairlead concrete, and paving at runway edge.

Demolish concrete ramp and platform that housed the fairlead beam at the runway edge in its entirety. Concrete base under fairlead beam ramp and platform will be demolished no less than 6” below existing runway edge height. Provide a base course compacted to 98% compaction or like leveling material to provide a sound base upon which to pave on. The Contractor shall pave two-three lifts of PG 64-28 to bring this area level with runway edge and slope. The asphalt cut will match existing runway edge line. All rubble must be cleaned up and hauled off site nightly.

For further details on the Asphalt composition see Asphalt specification in the project documents.

C. Removal of arresting barrier system sign bases.

Remove the aircraft arresting barrier concrete sign base in their entirety and fill holes with native soil to finish grade and compact holes in no greater than 8” lifts to achieve 95% compaction.

Contractor to remove and dispose of concrete of the Airport property.

D. Excavating/removing tape tubes, and tape tube supports.

Remove approximately 138’ of 12” ID tape tube per barrier side. Length will be verified by contractor. Tape tube will be cut off at the face of the barrier pits and holes will be capped with a

¼” thick metal plate covering the entire hole welded on the barrier pit pipe penetration hole. The void left in the pit wall shall be and filled with a 4000psi non-shrink grout. Trench must be infilled nightly and compacted to a 95% compaction density. Do not excavate more than can be backfilled nightly. 11 concrete supports under tape tube will be removed in their entirety.

The pipe will be salvaged by the Airport and hauled by the Contractor to a location on the Airport property as determined by the Project Engineer. Any rubble from supports will be removed from the site nightly. Contractor to remove and dispose of concrete of the Airport property.

E. Clearing vegetation and stripping topsoil

Strip suitable topsoil from the site where excavation or grading is indicated and stockpile enough topsoil to cap regraded area with a 4” of topsoil. This topsoil shall be stockpiled separately from other excavated material. Material unsuitable for use as topsoil shall be stockpiled and used for backfilling. Locate topsoil so that the material can be used readily for the finished grading. Where sufficient existing topsoil conforming to the material requirements is not available on site, provide borrow materials suitable for use as topsoil.

F. Grading raised area to match surrounding area

Grade excess soil berm material located over tape tube between barrier pit and runway edge.

Spread material throughout adjacent area matching existing grade and filling any low spot available. Finished product must match existing. All excess clean material will be hauled and disposed of Airport property. Any contaminated material shall be disposed of offsite at no cost to the Government. The Contractor shall survey the final grading product with the Government

Representative present to prove that the drainage requirements are met.

G. Replacing topsoil

Before placing any topsoil the shaped surface area shall be loosened by disking or spike-tooth harrows, or by other means approved by the Contracting Officer Representative, to a minimum depth of 2 inches to facilitate bonding of the topsoil to the covered subgrade soil. Prior to dumping and spreading the topsoil on any area

Grades on the area to be top soiled shall be maintained in a true and even condition.

Place stock piled topsoil evenly over any disturbed areas.

The topsoil shall be evenly spread on the prepared areas to a uniform depth of 4” after compaction, unless stated otherwise by Civil Engineering or Contracting Officer.

Spreading shall not be done when the ground or topsoil is frozen, excessively wet, or otherwise in a condition detrimental to the work. Spreading shall be carried on so that turfing operations can proceed with a minimum of soil preparation or tilling. If additional topsoil is needed it is the contractors responsibility to provide topsoil that is at least of equal quality to that which exists in areas adjacent to the area to be repaired. The soil shall be relatively free from large stones, roots, stumps, or other materials that will interfere with subsequent sowing of seed, compacting, and establishing turf, and shall be approved by the contracting officer or engineer before being placed.

After spreading, any large, stiff clods and hard lumps shall be broken with a pulverizer or by other effective means, and all stones or rocks (2 inches or more in diameter), roots, litter, or any foreign matter shall be raked up and disposed of by the Contractor.

H. Seeding

See Seeding specification for further details

I. Capping barrier pit penetrations at roof top and sealing precast roof slab joints

Cut off and cap pit intake, pit exhaust, and engine exhaust with a painted 1/4” thick painted metal cap on each penetration so that the caps are tight to the roof The caps shall be sealed to prevent water intrusion with a bead of silicone caulk and secured by bolts or welds. The barrier pit precast roof slab joints shall be sealed with foam backer rod and a Sikaflex SL-1 or like product.

J. Asphalt Milling and Patching

Mill asphalt areas shown in the drawings to a depth of 2” and Patch approximately 1150 sqft of asphalt. This patching will occur at the four barrier location on the Rnwy 03/21.

Based upon the above mentioned work items the Contractor shall submit a Work Progression

Plan 15 work days prior to start of work describing start time, time for each task, number of personnel at the job site, and estimated project completion time in a GANTT chart format.

SCOPE: Reclaim Aircraft Arresting System Barrier Pit and Asphalt Repair

HOURS OF OPERATION: MANG CES Normal Duty Hours; M - F 0700 –1630 hrs

LOCATION: 120th AW/Great Falls International Airport, Great Falls, Montana