SOW - RDG RTR Security Fence Installation.pdf

SPECIFICATION OF WORK

TITLE: Installation of a new perimeter security chain link fence, removal of all old perimeter security chain link fence and electrically grounding all new chain link fence to include installation of new ground rods and electrical connection to existing electrical ground of buildings and towers (buried counterpoises).

GENERAL: The contractor must furnish all labor, supervision, materials, services, insurance, and equipment necessary to perform the work shown on the project drawings and in this specification. This includes:

A. Installing a new 9’ high (8’ fabric + 1’ top guard) chain link fence encompassing the RTR building, E/G building and the two (2) antenna towers. The fence must include two gates:

one (1) 8’ H by 3’ W pedestrian gate and one (1) 8’ H by 16’ wide double-swing vehicle gate (two (2) 8’ W gates). Approximately 420 linear feet of fence is required.

B. Removing and disposing of all existing 8’ high (7’ fabric + 1’ top guard) chain link fence and gates at the RDG RTR facility. The individual chain link fence around the RTR building and ETG building and the two (2) individual chain link fences, one (1) around each of the two (2) antenna towers, must be removed in their entirety. Removal and disposal must be all inclusive and consist of removal of all fence fabric, gates, fence posts and fence accessories as well as underground concrete fence post foundations. Removing all existing fence signs and resinstalling them on the new fence. Approximately 460 linear feet of fence will be removed.

Removal of existing fences must not take place until the installation of the new fence is complete and the site is secured.

C. Electrically grounding of all new chain link fence according to the project drawings, this specification and applicable FAA standards and orders, particularly:

1. FAA Standard 019f, Lightning and Surge Protection, Grounding, Bonding and Shielding Requirements for Facilities and Electronic Equipment, Sections 5.3.8 and 4.4.4.

A new underground counterpoise (ground cable and ground rods) must be installed for the new chain link fence as per the drawings. It must be electrically connected via exothermic welds to each existing building counterpoise grounding system – the one encircling the buildings and the ones encircling each tower – according to the drawings and the applicable sections of the standard. The existing underground counterpoises for the buildings and the towers must be located by the contractor.

FAA Standard 019f is included as an attachment to this specification.

D. Grading and installing weedblock fabric and crushed stone in the area encompassed by the new fence as per the project drawings. Restoring all landscaping disturbed as a result of this work to include grading, seeding, etc.

IMPORTANT INFORMATION:

Underground utility lines (electrical lines, telephone lines, etc.) are present in the work area. It is the contractor’s responsibility to mark out all other underground utility lines per the specification Section: Execution, Paragraph E: Protection. The FAA will assist in locating underground utility lines in the work area mainly through the use of drawings although actual utility location methods, if feasible, will be performed.

All measurements are approximate. Exact measurements are the responsibility of the contractor. All dimensions shown on the drawings must be verified by the contractor by actual measurements in the field.

Any discrepancies between the drawings and specifications and the existing conditions must be referred to the resident engineer for instructions before any work affected is performed.

A site inspection prior to bidding is recommended but not required.

APPLICABLE DOCUMENTS: The following Federal and FAA Specifications, Standards and Drawings of the issue in effect at the date of this solicitation, form a part of these specifications.

A. Federal Specifications:

RR-F-191K Fencing Wire & Post, Metal (And Gates, Chain Link Fence Fabric and Accessories) General Specification

RR-F-191/1D Fencing Wire and Post Metal (Chain-Link Fence Fabric)

RR-F-191/2D Fencing Wire and Post Metal (Chain-Link Fence Gates)

RR-F-191/3D Fencing Wire and Post Metal (Chain-Link Fence Posts, Top Rails and Braces)

RR-F-191/4D Fencing Wire and Post Metal (Chain-Link Fence Accessories)

B. FAA Specifications, Standards and Orders:

FAA-STD-019f Lightning and Surge Protection, Grounding, Bonding and Shielding Requirements for Facilities and Electronic Equipment

FAA-E-2065 Fences.

FAA Drawing D-5597 Chain Link Fence (Class “F”) Steel or Aluminum Standard Details.

Other non-federal government standards specifically referenced in this document, such as ASTM standards, ANSI standards, etc. of the issue in effect at the date of this solicitation, also form a part of these specifications and are applicable to this project.

MATERIALS:

A. General. Products used must be produced by manufacturers regularly engaged in the manufacture of similar items and with a history of successful production acceptable to the Resident Engineer.

Deliver all materials in their original, unopened containers with product identification clearly legible on each container. Store in clean, dry spaces in a manner to prevent damage from any cause. Store only under conditions recommended by the manufacturers. The Resident Engineer will give assistance as to available storage areas. The contractor must supply material safety data sheets (MSDS) for all applicable materials.

An appointed representative of the Federal Aviation Administration will be permitted at any time to take samples of the materials to be tested for conformance with this specification.

B. Government Supplied Materials. There will be no government supplied materials. All materials covered in this specification must be furnished by the contractor.

C. Submittals. All materials must be submitted to the Resident Engineer for approval prior to use in order to check conformance with these specifications. Bidders are required to submit manufacturers' detailed application specifications, catalog cut sheets, and product information sheets showing that the product proposed complies with this specification and all referenced specifications and standards. Submittals for the materials listed under all sections must be submitted within 10 calendar days after award of the contract and must include:

1. A complete material list showing all items proposed to be furnished and installed.

The list must include manufacturer's name, and material and equipment identification such as style, type, or catalog number, to permit ready and complete identification.

2. Sufficient data to demonstrate that all such materials meet or exceed the specified requirements. A manufacturer's statement indicating complete compliance with the applicable Federal Specification or Military Specification will be acceptable proof of such compliance.

3. Specifications, installation instructions, and general recommendations from the materials' manufacturers showing applications and procedures under which it is proposed that the materials will be installed.

The Resident Engineer will review all submittals and will approve or disapprove them in writing. Approval must not be construed as a complete check, but will indicate only that the general method of construction and detailing is satisfactory. Approval will not relieve the contractor of the responsibility for any error or omission which may exist. Use of any materials not expressly approved will be at the risk of the contractor.

D. Documentation. The contractor must submit the following documentation for approval or disapproval by the FAA:

1. Material Submittal Documentation. Submit all instruction books, operations and maintenance manuals, cut sheets and parts lists for all applicable materials and equipment. The contractor must provide material safety data sheets (MSDS) for all applicable materials.

2. Contractor’s Health and Safety Program. The contractor must submit his or her company’s OSHA compliant Health and Safety Program that covers the contractor’s employees. The program must address health and safety issues that the contractor’s employees would be subject to while performing the work under this contract such as Confined Space Entry, Respiratory Protection, Hazardous Communication, etc.

E. Fence Materials. All material used in the construction of the fence must be of the best commercial quality, suitable for the intended use. Material must be free from defects that could adversely affect the performance or maintainability of the individual components. All new fence materials must conform to the project drawings, this specification and all pertinent referenced specifications noted herein. Any discrepancies must be reported to the Resident Engineer at the earliest possible time so that a determination can be made as to how to proceed.

F. Steel Chain Link Fence Fabric. Chain link fabric must conform to Federal Specification RR-F-191/1D, Type I or as shown on the drawings. Fabric must be 9 gauge, zinc-coated (galvanized) steel wire. Fabric must have a minimum weight of zinc of not less than 1.2 ounces per square foot of uncoated wire surface. Zinc coating must be applied to the steel wire before weaving. Mesh openings must be not larger than two (2) inches per side with a twisted and barbed selvage at top and bottom. Coat selvage ends of fabric that is metallic coated during the weaving process with manufacturer’s standard clear protective coating. Height of fabric must be 84 inches. Provide fabric fabricated in one-piece widths for fencing

G. Gates. Gate(s) must conform to Federal Specification RR- F-191/2D of the size shown on the project drawings. Gate frames must consist of galvanized steel pipe and must be constructed from the same class, size and grade members as specified for posts and rails elsewhere in this document. Assemble gate frames by shop welding or fittings. Where fittings are used as the construction method, the frames must be provided with 5/16-inch minimum diameter truss rods to provide frame rigidity without sag or twist.

Fabric for gates must be of the same type, size, grade and selvage as specified for the fence elsewhere in this document and must be securely attached to the gate frame at intervals not exceeding 15 inches. Attachment of fabric must be made through stretcher bars to the vertical members of the gate and by wire ties at the top and bottom edges of the gate. Attach hardware with rivets or other concealed or tamper-resistant means (spot-welding) that will provide security against removal or breakage. The Resident Engineer will provide direction in this matter. There must be barbed wire on top of gates as specified in RR-F-191/2D or as shown on the drawings.

H. Gate Hardware. Hinges, latches, stops, keepers and accessories must be steel with hot dipped galvanized coating.

1. Hinges must be pressed steel or malleable iron to suit gate size, non-lift-off type, offset to permit 180 degree gate opening. Provide 1 pair of hinges for each leaf.

2. Latches must be forked type or plunger-bar type to permit operation from either side of gate. Latches must be arranged for locking the gates in the closed position and must have provisions for a padlock. Provide padlock eye as integral part of latch. In addition, chains must be supplied for securing the gates and must be of adequate length and durability.

I. Posts. Posts must conform to Federal Specification RR-F-191/3D. Posts must be Class 1, Grade A for Type I fabric. Pipe conforming to ASTM F1083 (schedule 40 standard weight) meets or exceeds the requirements for Grade A. The dimensions of the posts must be in accordance with Tables I through VI of Fed. Spec. RR-F-191/3D or as shown on the drawings.

Where applicable, extend end and corner posts above top of chain-link fabric 12 inches as required to attach barbed wire assemblies.

J. Rails. Toprails will not be used; tension wire must be installed along top of fence.

Bottom rails must conform to Federal Specification RR-F-191/3D. Rails must be Class 1, Grade A for Type I fabric. Pipe conforming to ASTM F1083 (schedule 40 standard weight) meets or exceeds the requirements for Grade A. The dimensions of the rails must be in accordance with Tables I through VI of Fed. Spec. RR-F-191/3D or as shown on the drawings.

K. Braces. Braces must conform to Federal Specification RR-F-191/3D. Braces must be Class 1, Grade A for Type I fabric. Pipe conforming to ASTM F1083 (schedule 40 standard weight) meets or exceeds the requirements for Grade A. The dimensions of the braces must be in accordance with Tables I through VI of Fed. Spec. RR-F-191/3D or as shown on the drawings.

Provide brace rails with truss rod assembly for gate posts and terminal posts (end, corner and pull posts) according to RR-F-191/3D or as shown on the drawings. Provide two brace rails extending in opposing directions, each with truss rod assembly, for each required location.

Provide rail ends and clamps for attaching rails to posts.

L. Tension Wire. Tension wire must be supplied and installed for the top edge of the fence fabric. Tension wire must be hot dipped zinc-coated (galvanized) 9-gauge marcelled steel conforming to Fed. Spec. RR-F-191/4D and ASTM A824 or as shown on the drawings.

Coating must be identical to that on the fabric.

M. Barbed Wire. Barbed wire must conform to Federal Specification RR-F-191/4D or as shown on the drawings. Barbed wire must be hot dipped zinc-coated (galvanized) steel, and consist of two 12-gauge twisted line wires (double strand), with 14-gauge four-point barbs spaced 4 to 5 inches apart. Three strands of barbed wire must be used.

N. Barbed Wire Support Arms (Top Guard). Top guard must conform to Federal Specification RR-F-191/4D, type a, single slanted arm or as shown on the drawings. Top guard must contain the three strands of barbed wire and must be fixed-type. The supporting arms must be of sufficient height to increase the overall height of the fence at least one foot (to overall fence height). Barbed wire support arms must withstand without failure a load of 250 pounds (113 kg) applied vertically (downward pull) to the outermost end of the arm. Fasten wires to the arm slots of heavy pins. Arms must match existing fencing in area.

O. Chain Link Fence Fittings and Accessories. Provide fittings and accessories for a complete fence installation, including special fittings for corners.

Caps, rail and brace ends, rail sleeves, wire ties and clips (hog rings), brace and tension (stretcher bar) bands, tension (stretcher) bars, truss rods, and all miscellaneous accessories required must conform to Federal Specification RR-F-191/4 or as shown on the drawings.

Accessories must be commercial grade formed steel or better quality malleable or cast iron as appropriate to the article, and sufficient in strength to provide a balanced design when used in conjunction with fabric posts, and wires of the quality specified herein. Accessories must be hot dipped zinc coated with an average weight of not less than 1.2 ounces of zinc per square foot of surface area and must be appropriate for use with Type I fence fabric.

1. Special Requirements:

a. Line Post Caps. Provide line post caps with loop, ring or hole to receive tension wire.

b. Wire Ties and Clips. Wire ties for attaching fabric to line posts must be hot dipped zinc-coated (galvanized) 6-gauge steel wire. Clips (hog rings) for attaching fabric to tension wire must be hot dipped zinc-coated (galvanized) 9-gauge steel.

P. Electrical Fence Grounding Materials. In order to accomplish electrical grounding of the fence, provide all materials required by the project drawings, this specification and all referenced specifications herein, particularly:

Shielding Requirements for Facilities and Electronic Equipment, Sections 5.3.8 and 4.4.4.

The following grounding materials will be required, at a minimum, per the FAA documents noted above:

1. 4/0 AWG bare stranded copper cables.

2. Flexible tinned copper bond straps, 1” x 1/8”.

3. 4/0 AWG flexible (welding) copper conductors.

4. 6 AWG stranded tinned copper conductors.

5. Copper or copper-clad steel ground rods, 10’ lengths, 3/4” diameters, rod cladding not less than 1/100” thick.

6. Exothermic welds.

Q. Miscellaneous items. Miscellaneous items, such as bolts, nuts and washers, must be stainless steel.

R. Concrete. Concrete for fence post foundations must be of a commercial grade with a minimum 28-day compressive strength of 3000 psi.

S. Weedblock Fabric: Weedblock fabric must be a superior quality, high grade polypropylene fabric used in professional landscape applications as a weed control, separation, and water flow fabric. The fabric must not rot or mildew, must be non-biodegradable, inert to commonly encountered soil chemicals and resistant to damage from insects and rodents. Fabric must have a minimum average weight of 3 oz/sy. Known acceptable products: SRW Professional PS3 Weed Control Fabric or DeWitt Weed-Barrier 12 Year.

T. Crushed Stone. Must be ¾” clean crushed stone (a.k.a. DOT/AASHTO #57 stone, crushed bluestone, etc.) free from soft or disintegrated pieces, dirt, sand or debris, having the following gradation:

Sieve Designation % Passing

1-1/2 inch 100 1 inch 95-100 1/2 inch 25-80 No. 4 0-10 No. 8 0-5

EXECUTION:

A. General. All materials must be installed according to the manufacturer's written instructions, standard industry practices and methods, all applicable laws, codes, and standards, and as outlined below. The contractor must obtain approval from the Resident Engineer of all methods to be used in performing this work. Use of any methods without prior approval will be at the contractor’s risk and expense.

B. Discrepancies. Discrepancies found between the drawings, the specifications or the standards must be promptly submitted to the Resident Engineer who will make a determination.

An adjustment by the contractor without such a determination will be at his own risk and expense.

C. Work Area Clearances. It will be the contractor's responsibility to secure, through the FAA Resident Engineer, necessary clearances of work areas, and equipment and material storage areas, including any time limitations upon the use of such areas. It will be the contractor's responsibility to confine his personnel to the designated work areas at all times.

The contractor will be responsible for relocation and/or re-scheduling of his work force in the event of an operational request to clear a critical area.

D. Safety and Liability. The contractor must be responsible for his/her employees and his/her subcontractor's employees, for strict observance of all rules and regulations of the Occupational Safety and Health Administration (OSHA), applicable FAA authorities, and other governing authorities during the performance of this contract. The contractor will be required to make certain that his employees observe all local FAA rules and regulations governing the movement and parking of equipment and vehicles on FAA property.

1. Contractor’s Health and Safety Program. The contractor must have an OSHA compliant Health and Safety Program for his or her employees. The program must address health and safety issues that the contractor’s employees would be subject to while performing the work under this contract such as Confined Space Entry, Hazardous Communication, etc. A copy of this program must be submitted to the FAA Resident Engineer for review.

E. Protection.

1. General. The contractor must be responsible for the performance and enforcement of all forms of protection of persons, property, and work. Adjacent areas of the work area might be occupied during the procession of the work. If existing surfaces, materials or equipment are damaged or defaced during the process of dismantling, demolition or installation, they must be repaired or replaced with like or other approved materials and returned to equal or better than existing conditions and/or appearance, at no additional cost to the Government. It will be the contractor's responsibility to locate and protect all utility lines from damage, underground and otherwise. If underground utility lines are present in any work area it is the contractor’s responsibility to mark-out such lines using professional mark-out services or other approved means. The FAA will assist in locating underground utility lines in the work area mainly through the use of drawings although actual utility location methods, if feasible, will be performed. All damage caused by the contractor to existing utilities and utility lines must be repaired by the contractor at his own expense. At the end of each work day it will be the contractor's responsibility to clean all work areas and store all materials.

2. Protection of Existing Air Traffic Control Facility. The work required is to be performed within an existing Air Traffic Control operation. This facility will remain in operation twenty-four hours a day, seven days a week. The contractor must perform all his work in such a manner so as not to endanger the operation of the facility.

Extremely sensitive electronic equipment will be operational as the work under this contract is being performed. In such areas of the facility, dust or debris produced from this work will not be tolerated. Extra-clean work practices must be employed by the contractor. The complete protection of equipment and personnel is essential while the work is being performed. If feasible, the contractor might be required to perform some aspects of the work in another area to minimize disruptions to equipment environments.

The FAA Resident Engineer will be able to provide further direction in this matter.

3. Special Precautions. The contractor must protect against any movement or settlement of existing or new construction, and install barriers and/or control elements to protect against dust, air, smoke, water, noise and vibration.

F. Qualification of Contractor and Installers. The installation contractor must be regularly engaged in the performance of installing chain link fences with five (5) or more years’ experience in this specific type of work and must submit proof of licensing, qualification, references, and other similar jobs, with his bid. The contractor and installers must be thoroughly trained and experienced in the necessary skills for proper execution of the work and thoroughly familiar with the specified requirements.

G. Area Preparation. All materials and items present that need to be relocated in order for work to proceed must be moved by the contractor and replaced after work is complete. The Resident Engineer will determine what items need to be removed from the work area. The Resident Engineer will inform the contractor as to acceptable storage areas for any and all items to be moved.

H. Fence Installation, General. The fence must be constructed using all new materials and all work must be performed in accordance with the project drawings, this specification and all pertinent referenced specifications noted herein. Any discrepancies must be reported to the Resident Engineer at the earliest possible time so that a determination can be made as to how to proceed. Prior to the beginning of the work, the contractor must locate the position of the work by establishing and marking the fence line. The fence must be installed as indicated on the drawings.

The Contractor must span any opening below the fence with barbed wire fastened to stakes of the required length (at locations of small natural or drainage ditches where it is not practical to conform the fence to the general contour of the ground surface). The finished fence must be plumb, taut, true to line and ground contour, and complete in every detail as specified in the contract.

I. Clearing Fence Line. All trees, brush, stumps, rocks, logs, or other obstructions or debris that could interfere with the proper construction of the fence in the required locations must be removed by the contractor to a minimum width of 2 feet on each side of the fence centerline before starting fencing operations. The site of the fence must be sufficiently cleared, and surface irregularities must be graded, so the fence will conform to the general contour of the ground. Stumps within the cleared area of the fence line must be grubbed or excavated. The bottom of the fence must be placed a uniform distance above the ground as specified herein.

Rubbish or brush that has been unearthed from post holes or by grading to smooth fence lines must be removed from the site. All work must be left in a neat and orderly condition.

J. Fence Posts and Foundations. All posts must be located and installed according to FAA drawing number D-5597 to the required spacing and set in concrete foundations of the required dimensions.

Posts must be spaced not more than 10 feet apart. Line posts must be set a minimum of 36 inches in concrete footings. Terminal posts (end, corner, & pull posts) and gate posts must be set a minimum of 42 inches in concrete footings. If the frost depth is greater than 36 inches, the posts must be set deeper accordingly.

Drill or hand-excavate holes for post footings to diameters and spacing indicated, in firm, undisturbed or compacted soil. Holes must have a diameter equal to 4 times the diameter of the post except where otherwise indicated on the drawings. Excavate hole depths approximately 3 inches deeper than post bottom. Should rock be encountered at a depth less than the planned footing depth, a hole 2 inches larger than the greatest dimension of the posts must be drilled to a depth of 12 inches. After the posts are set, the remainder of the drilled hole must be filled with grout, composed of one part Portland cement and two parts mortar sand. Any remaining space above the rock must be filled with concrete in the manner described above. In lieu of drilling, the rock may be excavated to the required footing depth. Surplus dirt from post holes must be scattered or removed as indicated by the Resident Engineer. All work must be left in a neat and orderly condition.

Protect the portion of posts aboveground from concrete splatter during concrete placing operations. Place concrete around posts and vibrate or tamp for consolidation. The posts holes must be in proper alignment so that there is a minimum of 3 inches of concrete on all sides of the posts. Concrete footings must be concealed; stop footings below grade to allow covering with surface material.

All posts must be set vertically plumb, rigidly secured in place to the required grade and true alignment. Using mechanical devices to set line posts per ASTM F567 is permitted. Verify that posts are set plumb, aligned, and at correct height and spacing, and hold in position during placement and finishing operations until concrete is sufficiently cured. Concrete foundations for all posts must be allowed to cure for a minimum of 3 days or must have reached a compressive strength of 1,000 psi before applying fence loads.

All posts must be able to pass a pull test when a force of 48 pounds is applied perpendicular to the fence at the top of the post. The post should not deflect more than 1 inch at the location where the force is applied.

Post tops must be riveted or must be spot-welded. No loose or rattling fittings will be allowed.

K. Fence Fabric. Apply fabric to outside of enclosing framework. Pull fabric taut and tie to posts, rails, and tension wires. Anchor to framework so fabric remains under tension after pulling force is released.

Standard chain-link fence stretching equipment must be provided for stretching the fabric before tying it to the rails and posts. The stretching and tying operations must be repeated as per manufacturer's recommendations and about every 80 feet until the run of fence is completed.

The operation of making a closure of a run will be as follows. The stretching equipment must be clamped on the ends of the fabric parallel to each other and about 5 feet apart when the tension is first applied. The stretching must continue until the slack has been removed from both sections of the fabric. If the ends overlap, the fabric must be cut to match.

Fabric must be attached to end, corner, pull and gate posts with tension (stretcher) bars and tension (stretcher bar) bands. One (1) stretcher bar must be installed at each gate post and end post, and two (2) stretcher bars must be installed at each corner and pull post. The stretcher bar must be threaded through the end picket of the fabric and secured to end, corner, pull and gate posts with stretcher bar bands that must be tightened and installed within 4 inches of the top and bottom of the fence fabric and equally spaced on the stretcher bar not more than 15 inches on center. Additional rolls of fabric must be spliced and placed as the erection along the fence progresses.

After the stretching is complete, the fabric must be attached and firmly secured to the tension wire with clips (hog rings) and to line posts and rails with wire ties. Attach ties at one end to the chain link fabric, wrap around post a minimum of 180 degrees, and attach the other end to the chain link fabric. Ties must be securely clinched to the back of the posts and spaced not more than 15-inches on center and to braces not more than 24 inches on center. The topmost wire ties must be placed on the line posts as near the top of the fabric as possible. Bend ends of wire to minimize hazard to individuals and clothing.

The fence must generally follow the contour of the ground, with the bottom of the fence fabric no less than 1 inch or more than 2 inches from the ground surface. Grading must be performed where necessary to provide a neat appearance. At locations of small natural swales or drainage ditches and where it is not practical to have the fence conform to the general contour of the ground surface, longer posts may be used and multiple strands of barbed wire stretched thereon to span the opening below the fence. The vertical clearance between strands of barbed wire must be 6 inches or less. Openings below the fence may also be spanned with barbed wire fastened to stakes.

L. Tension Wire. Install top tension wire according to FS RR-F-191, interwoven with the fabric maintaining plumb position and alignment of fencing. Pull wire taut, without sags.

Fasten fabric to tension wire with clips (hog rings) spaced a maximum of 15 inches on center and close to both sides of each post. Clips must be spaced uniformly between the top and bottom of the fence fabric. Install tension wire in locations indicated before stretching fabric.

Crimp ties and clips tight to prevent noise. No loose or rattling equipment will be allowed.

M. Braces. Install according to FS RR-F-191, maintaining plumb position and alignment of fencing. Install braces in one piece spanning between posts at end and gate posts and at both sides of corner and pull posts. Locate horizontal braces at two-thirds fabric height on fences without top rail or midway between the top of fabric and the ground line using fittings, special offset fittings, and accessories. Install so posts are plumb when diagonal truss rod is under proper tension. Posts must be braced before the fence fabric is installed.

N. Barbed Wire. Install 3 strands of barbed wire parallel on each extension arm, on the exterior side of the fence (away from the Government property), unless otherwise shown.

Barbed wire must be secured to the support arms in a positive and complete manner at each contact point. Barbed wire support arms must have a tight press-fit or must be spot-welded to preclude surreptitious removal. At end and gate posts, barbed wire must be wrapped once around the posts and clipped and the ends of the horizontal wires tied with a snug tight twist.

Each longitudinal wire must be stapled to each post with a clip designed for use with steel posts. No loose or rattling fittings will be allowed. Pull wire taut to ninety (90) pounds of tension.

O. Gate Installation. Install gates according to manufacturer’s written instructions, level, plumb, and secure for full opening without interference. Install ground-set items such as keepers, stops, sleeves, and other accessories in concrete for anchorage.

Adjust gate to operate smoothly, easily, and quietly, free from binding, warp, excessive deflection, distortion, nonalignment, misplacement, disruption, or malfunction, throughout entire operational range. Adjust hardware for smooth operation and lubricate where necessary.

Confirm that latches and locks engage accurately and securely without forcing or binding.

P. Electrical Fence Grounding. The new chain link security fence must be electrically grounded according to the attached drawing, this specification and the following:

Shielding Requirements for Facilities and Electronic Equipment, Sections 5.3.8 and 4.4.4.

A new underground counterpoise (ground cable and ground rods) must be installed for the new chain link fence as per the drawings. It must be electrically connected via exothermic welds to each existing building counterpoise grounding system – the one encircling the buildings and the ones encircling each tower – according to the drawings and the applicable sections of the standard. The existing underground counterpoises for the buildings and the towers must be located by the contractor.

Q. Weedblock Fabric: Site areas shown on the project drawings that are to receive weedblock fabric prior to crushed stone placement must be grubbed and scarified prior to the fabric installation. All grass, roots, shrubs, weeds and other small vegetation must be removed, the ground scarified to a minimum depth of 3” and the fabric installed in accordance with the manufacturer's instructions. All grass, roots, shrubs, and debris must be disposed of offsite at a location selected and arranged for by the contractor in accordance with federal, state and local ordinances for such disposal.

R. Crushed Stone. As indicated on the project drawings all surfaces encompassed by the new fence area (except areas that already have crushed stone) are to receive at least 4” of ¾” clean crushed stone. Place crushed stone on the fabric according to the fabric manufacturer’s instructions and blend with the areas that have existing crushed stone.

S. Grading and Seeding. After work is complete disturbed areas must be re-graded, shaped to drain, and be maintained free of trash and debris until final inspection has been completed and the work has been approved.

Equipment used for soil preparation of seeding must pass parallel to the land contours. The liming must be performed prior to the application of fertilizer and seed.

Areas can by hydro-seeded or seeds can be sown by hand or by cyclone-type brass seeders at a rate of 125 pounds bulk seed mixture per acre.

The planting season is April 15th to September 15th. When seeding is performed out of season, oats, rye or barley must be added to the seed mixture at a rate of twenty pounds per acre. Seeding must not be done when the soil is extremely wet or frozen. The finished seeded areas must be even, and must conform to designated line and grade.

All disturbed areas must be covered with hay mulch applied at the rate of two tons per acre.

Mulch must be applied immediately following seeding and prior to rolling. The mulch must be anchored with stakes and strings or a method approved by the Resident Engineer.

Areas to be seeded must be graded to within 4 inches of finish grade.

1. Fertilizer. Commercial fertilizer must be a complete fertilizer, the elements which are derived from inorganic source, and must contain the following:

10% by weight of nitrogen 6% by weight of phosphoric acid 4% by weight of potash

These various elements must conform to the standards of the Association of Official Agricultural Chemists, and must be delivered mixed, in containers showing the weight analysis and the manufacturer's name. Fertilizer must be applied at the rate of one thousand (1000) pounds per acre, and must be worked into the soil to a depth of two to three inches.

2. Lime. Lime must be ground limestone containing not less than 85 percent of total carbonates, and must be ground to such fineness that 90 percent will pass through a No. 20 mesh sieve, and 50 percent will pass through a No. 100 sieve.

The Resident Engineer must be furnished with duplicate copies of invoices of all lime used on this project, or must have the manufacturer's analysis on the container. Invoices for lime must show total minimum carbonates, and minimum percentages of the material furnished that pass the No. 20 and the No. 100 mesh sieves. The limestone must be applied at a rate of one ton per acre.

3. Seed Mixture. Seed mixture must be as follows:

Seed Portion by Weight Kentucky Blue Grass 20% Kentucky #31 Fescue 45% Creeping Red Fescue 20% Red Top 10% Alsiki Clover 5%

All seed must be fresh, clean, "new crop to" seed. Harmless inert matter and weed seeds will be permitted up to one (1) percent of the gross weight of each variety of seed.

4. Quality Assurance. The contractor must maintain the seeded and mulched areas until final acceptance of the work. Maintenance will consist of providing protection against traffic and repair of any areas damaged due to wind, water, erosion, fire or any other causes. Such damaged areas must be refertilized, reseeded and remulched as specified herein.

T. Guarantee. The contractor must guarantee all workmanship and materials for a period of one (1) year after completion of the project. A written guarantee to this effect must be provided to the FAA Resident Engineer. All written material guarantees on contractor supplied materials must be supplied to the Resident Engineer.

U. Final Cleanup. All soil and face smears on materials must be corrected and cleaned to the satisfaction of the Resident Engineer. Any area disturbed or items damaged by the work must be restored or repaired. After all work is complete, all debris, dirt, waste, old material, and the contractor's equipment and tools, must be removed from all work areas. Debris and old material must be removed from the job site, off Government owned property, at the expense of the contractor. The facility dumpsters are not permitted to be used for the disposal of any waste materials as a result of the work under this contract. Clean up of all work areas must be performed to the satisfaction of the Resident Engineer prior to the Resident Engineer approving the finished project for payment.

LOCATIONS: The facility location is as follows:

1. RDG RTR Facility. Arnold Road, Reading PA

Please contact Mr. Allan Laird, Allentown SSC Manager for directions and to arrange site visits. Phone (610) 231-8270.

WORK HOURS: A work schedule will be agreed upon between the contractor and the Resident Engineer at the required preconstruction meeting.

All work must normally be performed between the hours of 8:00 AM and 4:30 PM, Monday through Friday unless otherwise agreed upon.

Work during other hours might be required at any time during the performance of this contract if needed to minimize disruption of equipment and/or personnel. Work in certain areas might need to be performed in sections to minimize potential disruptions.