BRV VOR SOW 08-10-2017.pdf

SCOPE OF WORK

REFURBISH BRV VOR

Brooke, Virginia

08/10/2017

1.0 GENERAL

All work is on FAA property located near Fredericksburg Virginia. There’s a gravel driveway & parking area, equipment building, VOR/TACAN antenna w/tipi, monitor antennas, utility transformer, diesel tank and, other items located on the site. It’s a “mountain top” VOR and, the tipi is located 240 feet away from the equipment building. The FAA wants to mulch trees, repair the gates & security fence, replace the fiberglass Teepee antenna cover, refurbish the mailbox monitor antenna covers, install new pull box covers and, add fill & rock to entrance drive.

2.0 SCOPE OF WORK

The Contractor shall perform the following work:

1. Cut, grind, & mulch all trees within a 350 foot radius of VOR antenna. Approximately 4 acres of trees.

a.) Provide the services of a professional land surveyor. Locate the 700 foot diameter circle shown on Attachment A.

b.) Provide one 4’ stake at each 100’ interval along the 2200’ circumference. Place orange flagging tape on each stake.

c.) Cut, grind, & mulch all trees within the flagged area. Provide rotary disc mulching services.

Provide machinery equal to that manufactured by Advanced Forest Equipment or Denis Cimaf Inc.

d.) All trees will be completely mulched in place. Stumps shall be mulched down to ground level. All resulting wood chips will be evenly spread over the entire area to provide erosion control.

e.) No trees will be removed from site & Contractor is not allowed to sell lumber. Any trees too large for mulching will be cut into small lengths and disposed off site.

2. Repair equipment building security fence and, repair antenna vinyl gate.

a.) Replace broken outriggers. Provide approximately (6) new barb wire outriggers on equipment building security fence. Replace all broken strands of barb wire. Restore barb wire tension.

Restore barb wire & outriggers to proper appearance, fit, & function.

b.) Replace vinyl gate on antenna fence. Provide new hinges, latch, & adjustable gate wheel.

Gate wheel to be equal to that made by Shepherd Hardware or Northern Tool Co. Provide (4) cubic feet crushed aggregate under path of wheel to insure smooth operation.

3. Provide fill and rock. Increase size & provide larger radius for driveway entrance at equipment building gate.

a.) Remove top layer of unsuitable organic earth.

b.) Install 18cy structural fill. Compact fill to 95% density.

c.) Provide 9cy gap graded stone on top of fill.

4. Install new GFM fiberglass teepee antenna cover.

a.) This work requires an extended shutdown of VOR service. Provide one month advance notice to FAA. Verify NOTAM’s have been made. Obtain written permission from FAA to begin work.

b.) Perform electrical lock out tag out procedures. Make arrangements with an FAA Technician to take the VOR out of service, de-energize and, lock out – tag out antenna power. Un-fasten antenna cable located within tipi and remove electrical wiring harness from antenna motor. Wrap connectors in plastic bags w/electrical tape to prevent damage during construction.

c.) Provide crane services to remove fiberglass antenna cover. Cover is cone shaped 20’ high with 10’ diameter base. Cover weighs approximately 1000lbs. Remove antenna motor. Unbolt top cover & ring and remove from main tipi. Unfasten, cut seal, & carefully pry off main tipi and remove from sheet metal floor deck. Save all hold down plates & threaded fasteners.

d.) Use wire brush and penetrating oil and, clean all rust and corrosion off of the concrete anchors & bolts. Clean corrosion off of flat bar hold down plates. Replace any badly corroded fasteners. Store parts for re-use.

e.) Provide crane services. Install new GFM fiberglass tipi on sheet metal floor deck. Position neoprene gasket under tipi. Place tipi on floor deck and bolt into final position. Provide a liquid applied, 4” wide, membrane flashing around entire perimeter of tipi. Completely seal off the construction joint at base of teepee.

f.) Re-attach the antenna motor, top cover & ring. Re-connect all antenna cables & power wiring harness.

g.) Place old antenna cover onto the custom trailer. Place trailer in a readily accessible location for pick up.

5. Furnish and install a new Terne Plate covering over teepee interior floor.

a.) Remove and discard existing sheet metal terne plate from antenna floor. De-solder terne plate from steel antenna pedestal mounting ring. Do not dispose in landfill. Terne coated metal pans contain lead and must be recycled.

b.) Clean off all residue from concrete foundation with scrapers, wire brush and high speed grinder. Broom clean the concrete surface. Clean all residue from top and bottom of antenna pedestal.

c.) Install 1 layer, ASTM D-226, Type II, #30 Roof Felt over entire concrete foundation. Make ½” holes in felt for teepee anchor bolts. Neatly trim off roof felt around edge of concrete perimeter. Trim felt from around edge of antenna pedestal.

d.) Furnish and install a flat, seam locked & soldered, terne coated, sheet metal cover over concrete foundation and, antenna pedestal. All seams shall be fully soldered per manufacturers recommendations. Terne coated copper sheets shall be 20 ounces. Maximum pan size 18” x 24”.

Form sheets on a brake as indicated by roofing manufacturer. Mark folds ¾” from edge on all four edges. All seams must be fluxed, malleted, dressed and thoroughly sweated with solder. Use solder per manufacturer’s directions. Flux containing acid shall not be used. Use rosin only as a flux.

e.) Make ½” diameter openings in terne plate for teepee anchor bolts so terne plate lies flat across teepee anchor bolts. Lay terne plate across anchor bolts and lap 2” over the edge of foundation. Cut terne plate to match foundation radius plus two inches. Hammer terne plate down over perimeter edge of foundation to produce a neat 2” drip edge.

f.) Lap terne plate 6” over antenna pedestal. Cut terne plate to match antenna pedestal outer radius less 6”. Solder terne plate to pedestal. Terne plate solder all around pedestal to be a smooth and continuous weld.

6. Provide ground wire to antenna plate. Install a green #2AWG TWHN wire 20’ from pull box to antenna leveling plate. Cadweld wire to antenna plate.

7. Repair (16) mailbox antenna covers.

a.) Unbolt and remove 16 mailbox antenna covers. Carefully collect and save all hardware for re-use. Provide temporary covers for the exposed antennas. Place a heavy duty, 42 gallon, 3 mil, polyethylene bag over each antenna. Secure with nylon wrap tie.

b.) Repair the mailbox antenna covers in accordance with specification 10A.9. through 10A.11.

Clean & coat 16 covers with three coats of bright white epoxy polyamide paint. Paint will be equal to Sherwin Williams Tile-Clad HS Epoxy.

c.) Re-attach the 16 mailbox antennas. Replace any damaged or badly corroded fasteners. Re-connect the antenna cables.

8. Provide (2) new pull box covers near antenna teepee.

a.) Remove and discard the plywood covers. Clean out pull boxes. Remove all organic debris & excess soil.

b.) Carefully measure outside dimensions of concrete boxes. One is approximately 44”x44” and, the other is appx. 48”x48” c.) Furnish and install (2) new covers. Make new covers out of general purpose fiberglass sheet with a UV inhibitor. Fiberglass sheet will be equal to one the following:

1) ePlastics no. 500SHTO.500X48X96, Standard 500 Grade, Fiberglass Sheet

2) K-mac Plastics no. KS-2733A, Extren 500, General Purpose, Fiberglass Sheet d.) Following manufacturers recommendations cut fiberglass sheet to fit neatly over each pull box opening. Install 2” wide x 1/8” thick, commercial grade 60A, neoprene rubber gasket along each edge of 4 sides of both covers. Glue rubber gasket to fiberglass cover with 3M weatherstrip adhesive. Fasten fiberglass cover at each concrete pull box corner with a 3/8” X 1-1/2” stainless steel expansion anchor bolt & nut. Provide stainless steel bumper washer under each nut. Hand tighten nuts.

e.) Paint (2) new covers with two coats of bright white epoxy polyamide paint. Paint will be equal to Sherwin Williams Tile-Clad HS Epoxy.

f.). Provide covers that completely cap concrete boxes and, are easily opened & closed.

9. Remove and discard abandoned electrical enclosure from East side of building.

a.) Electrical enclosure is about 5’ high, 4’ wide & 6’ long.

b.) Allow FAA Technicians to salvage any small parts they want.

c.) Unbolt and, disassemble enclosure. Transport shelter to a scrap metal recycling center.

2.1 GENERAL REQUIREMENTS

a.) Contractor shall repair any damage done by him to any entity, at his cost. Contractor shall be covered by minimum locally required liability insurance.

b.) Contractor must provide FAA with a safety and security plan before any work begins. Plan will include procedures for accident prevention, emergency procedures, and phone number & map to nearest emergency medical facility.

c.) All work shall be coordinated, scheduled, & approved by Richmond FAA Airways Facility Management.

d.) Contractor will be continuously monitored by an FAA Resident Engineer during all work hours.

d.) Contractor's Superintendent shall be present at the work site during all times work is performed. Superintendent shall carry a cell phone and, be prepared to make and receive calls to & from the FAA at all times while on work site.

e.) All materials used must be approved by the FAA before installation. Contract will submit information on all items given in Part 3.0 below.

2.2 WORK HOURS AND CONDITIONS

a.) Work will only be done during daylight hours between 7:00AM to 5:00PM. Mon thru Fri.

b.) Weekend work will only be authorized if necessary due to weather. No overtime will be allowed c.) Contractor will report & coordinate each days work in advance with an FAA technician that is trained to operate and repair VOR/TACAN, DME, RCO, & BUEC equipment.

3.0 SUBMITTALS

All plans, materials, and information will meet FAA approval before NTP. Submittals will include the following:

a.) Work schedule b.) List of workers and subcontractors c.) Bonding & Insurance d.) Construction materials disposal plans & permits e.) Safety and accident prevention plan f.) All materials called for in part 2.0, 1 through 9 above including: fence outriggers, barb wire, vinyl gate, gap graded stone, epoxy paint, galvanized steel, caulk & sealant, Terne plate, solder, cad welds, #2 awg, fiberglass covers, neoprene rubber, & weatherstrip adhesive.

g.) Equipment: rotary disk mulching machines, support vehicles, crane, man lifts, work platforms or, booms

4.0 PRE BID SITE VISIT

The Contractor is expected to carefully examine areas of the proposed work, to see first hand the extent of work involved. The submission of a proposal will be considered evidence that the bidder has made such examination and is satisfied as to the conditions to be encountered in performing the work. All site visits must be coordinated in advance. The FAA Contracting Officer will provide a date for one official site visit with the Engineer. If any other visits are needed, Contractor must give FAA at least five days advance notice before appearing on site.

All visitors must be escorted by an employee of FAA or, other authorized personnel.

5.0 DRAWINGS

1. Attachment A: BRV Tree Removal 08/10/2017

5.1 SPECIFICATIONS

1. NFPA 70 Current Edition

2. IBC Current Edition

3. ASTM & NRCA Standards Current Edition

4. Virginia Uniform Statewide Building Code (USBC) Current Edition

5.2 REFERENCE MATERIALS

These are old site drawings. To be used for reference only. Not for construction use.

1. EA-D-7758-C1, Brooke, VA VORTAC, Vicinity Sketch, 12/03/1956

2. EA-D-7758-C2, Brooke VA VORTAC, Plot Layout, 12/03/1956

3. EA-D-25235, Brooke VA VORTAC, Property Acquisition, 12/13/1972

6.0 LOCATION OF WORK

681 Belle Plains Rd., Fredericksburg VA, 22405

7.5 miles East of I-95 off State Route 604 Stafford County, Virginia

LAT/LON: 38.33625 N, 77.35286 W, elev. 149’

7.0 CONTACTS

Brian Sotdorus, RIC SSC Mgr. Richard Polk, FAA Engineering FAA Richmond ATCT AJW-2E15J, Campus Bldg.

5701 Gulfstream Rd 1701 Columbia Ave Richmond, VA 23250 College Park, GA 30337 804-222-8956 w:404-305-7445 c:678-485-6811 e:mail brian.l.sotdorus@faa.gov e:mail: richard.polk@faa.gov

Steve Gowen, RIC SSC NAV-COM Mike Kelly, TN/VA TOM FAA Richmond ATCT FAA Norfolk ATCT/TRACON 5701 Gulfstream Rd 1245 Miller Store Rd Richmond, VA 23250 Virginia Beach, VA 23455 ph.: 540-204-7173 ph.: 804-226-6529 steve.gowen@faa.gov mike.t.kelly@faa.gov

8.0 FOR FAA USE ONLY

JCN: 902964 JON: 1210SO0840

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mailto:brian.l.sotdorus@faa.gov mailto:richard.polk@faa.gov mailto:steve.gowen@faa.gov mailto:mike.t.kelly@faa.gov