20240325_Exhibit_A_Tower_ITN_Site_Tech_Specs_Final.pdf

EXHIBIT A

TECHNICAL SPECIFICATIONS

WALTON COUNTY, FLORIDA

TOWER SITES

INVITATION TO NEGOTIATE

ITN 24-26

V. 3/25/2024

TABLE OF CONTENTS

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1. INTRODUCTION AND OVERVIEW

1.1 General Scope of Work

1.2 Definitions

1.3 Standards of Work

2. SYSTEM IMPLEMENTATION PLAN

2.1 Project Communications Plan

2.2 Project Schedule

2.3 Extension of the Project Schedule

2.4 Work Breakdown Structure

2.5 Quality Assurance Plan

3. FAA AND FCC FILINGS AND AUTHORIZATIONS

3.1 FAA Study and Determination

3.2 FCC Antenna Structure Registration

3.3 Environmental, Tribal, Historical, MPE, EME/NIR, and Other Studies

3.4 AM Detuning

4. COMMUNICATION SITE DEVELOPMENT

4.1 Construction Site Management and Safety Plan

4.2 Construction Drawings and Permitting Documentation

4.3 As-Built Drawings and Documentation

4.4 Construction Materials

4.5 Workmanship

4.6 Construction Work Coordination

4.7 Clearing of Land

4.8 Communication Site Cleanup and Debris Removal

4.9 Sanitary Facilities

4.10 New Tower Site Development Tasks

4.11 Tower Structure General Requirements

4.11.1 Reference Standards

4.11.2 Geotechnical Exploration

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4.11.3 Tower Foundation Construction and Design

4.11.4 Concrete Materials Testing

4.11.5 Design Plans and Submittals

4.11.6 Manufacturers’ Certification and Support

4.11.7 Construction Notifications

4.11.8 Materials

4.11.9 Corrosion Protection

4.11.10 Loads and Stresses

4.11.11 Appurtenances

4.11.12 Lightning Rod

4.11.13 Antenna System and Transmission Line Loading

4.11.14 Wind Speed Rating

4.11.15 Tower Twist, Sway, and Displacement

4.11.16 Transmission Line Support System

4.11.17 Waveguide Bridge System

4.11.18 Climbing Ladder

4.11.19 Tower Lighting and Controls

4.12 Communications Shelter Requirements

4.12.1 General Description

4.12.2 Reference Standards

4.12.3 Shelter Size

4.12.4 Design Loading

4.12.5 Foundation

4.12.6 Flooring

4.12.7 Roof Section

4.12.8 Walls ..……………………………………………………………………………26

4.12.9 Doors ..……………………………………………………………………………26

4.12.10 Lighting

4.12.11 HVAC ……………………………………………………………………………27

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4.12.12 Fire Detection and Equipment

4.12.13 Site Alarms

4.12.14 Transmission Line/Waveguide Entry Panel

4.12.15 Cable Trays

4.12.16 Telephone Backboard

4.12.17 Shelter Electrical

4.12.18 Shelter Electrical Service Size

4.12.19 Shelter Electrical Wiring

4.12.20 Isolation Transformers

4.13 Standby Generator Requirements

4.13.1 Installation

4.13.2 Documentation

4.13.3 Generator Warranty

4.13.4 Generator Startup Service

4.13.5 Type of Generator

4.13.6 Generator Ratings

4.13.7 Alternator

4.13.8 Generator Instrumentation, Control and Alarms

4.13.9 Fuel Supply

4.13.10 Weather Proof Enclosure

4.13.11 Exhaust System

4.13.12 Battery and Charger

4.13.13 Cooling System

4.14 Automatic Transfer Switch

4.14.1 Transfer Switch Specifications

4.14.2 Automatic Controls

4.14.3 Front Panel Control Devices

4.14.4 Exerciser Clock

4.15 Fencing

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4.16 Site Landscaping

4.17 Weed Barrier

4.18 Compound Gravel

5. GROUNDING, BONDING AND SURGE SUPPRESSION

5.1 Communication Sites

5.1.1 External Ground System

5.1.2 Communication Shelter Internal Ground System

5.1.3 Ground System Resistance

5.1.4 Communications Shelter Ground Ring

5.1.5 Tower Ground Ring and Radial Ground System

5.1.6 Tower Grounding Tab

5.1.7 Transmission Line Ground Bus Bars

5.1.8 Transmission Line Waveguide Bridge Sections and Support Posts

5.1.9 Metallic Objects within the Site Compound

5.1.10 Fence Grounding

5.2 Lightning and Surge Suppression

5.2.1 Primary AC Power SPD

5.2.2 Secondary AC Power SPD

5.2.3 Transfer Switch SPD

5.2.4 Tower Lighting Controller SPD

5.2.5 Low-Voltage and Copper Line Surge Suppression

6. INSTALLATION REQUIREMENTS

6.1 General Installation Requirements

6.2 Installation Approval

6.3 Equipment Storage and Delivery

6.4 Installation Coordination

6.5 Site Cleanup and Restoration

7. PERFORMANCE VERIFICATION AND ACCEPTANCE

7.1 System Acceptance Test Plan

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7.2 Tower and Facilities Mechanical Inspection and Tests

7.2.1 Communication Site Tests

7.2.2 Earth Ground System Resistance Test

7.2.3 Generator System Testing

7.3 Final System Acceptance

8. SYSTEM DOCUMENTATION

8.1 General

8.2 System Drawings

8.3 As-Built Drawings

8.4 Instruction and Operation Manuals

8.5 System Testing and Acceptance Documentation

9. WARRANTY REQUIREMENTS

9.1 Warranty Period

9.2 OEM and Third-Party Warranties

9.3 Maintenance Documentation

TABLES

Table 1 - Tower Design Loading

INVITATION TO NEGOTIATE

ITN 24-26, TOWER SITES

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1. INTRODUCTION AND OVERVIEW

A. Walton County, Florida is seeking a value-conscious partner to design and build tower sites to support a new Project 25 (P25) public safety land mobile radio system and enhance cellular coverage throughout the County as part of a Public Private Partnership

(3P).

B. The County has issued a separate ITN for the radio equipment and services needed to construct the P25 system, and the successful vendor of the P25 ITN will determine the tower site locations required for the tower sites constructed via this Tower Site ITN.

C. It is expected that an addendum will be issued to this ITN identifying the tower site locations and minimum height required at each site for the P25 system.

D. It is the preference of Walton County that one vendor will be contracted to design, build and manage all new tower sites. The quantity and location of new tower sites will be established in the P25 ITN and is anticipated to be 14 new tower sites.

E. It is the preference of Walton County to build all new tower sites constructed via this ITN on County owned or provided property.

F. It is the desire of the County that the successful Contractor of the Tower Site ITN will commit to build the tower sites required by the P25 system in exchange for long term leases on County property and favorable lease terms for future revenues generated by the tower sites. The overarching goal of this ITN is to build these tower sites in a manner required to support a public safety radio system with the minimum amount of capital and recurring cost to the County.

G. For the purposes of this ITN, each new tower site shall constructed to the minimum height listed in Table 1 New Tower Site Locations (200 to 300 feet AGL). The towers shall be self-supporting type towers and be constructed with all solid members. The foundations shall be drilled pier type and the Contractor shall provide a sample design for each tower size. Each tower site compound will include a fenced area of 100 foot x 100 foot, and include a cleared area of 150 foot x 150 foot in size.

H. The Contractor will provide a new County-owned 12’ X 20’ communications equipment building at each new tower site meeting the requirements in these technical specifications.

I. The Contractor will provide a new County-owned standby generator for the County’s equipment building at each new tower site meeting the requirements detailed in these technical specifications.

J. The new tower site’s primary purpose is to support the County’s new P25 public safety radio system. The tower design criteria, site grounding and bonding requirements, and other requirements in this ITN are in support of that purpose.

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Table 1 New Tower Site Locations

1.1 General Scope of Work

A. The Contractor’s proposed solution shall include the tower site design and construction, engineering, equipment and installation, implementation services, operator and technical training, and warranty services for any item provided to meet the requirements of this

ITN.

B. The Contractor shall complete and pass all site acceptance tests of system components, including grounding, bonding and surge suppression and standby generator load testing per the requirements of this ITN.

1.2 Definitions

A. Unless stated otherwise in the document, the following definitions shall control the meanings of certain words and phrases as used within this document.

a. AC means alternating current.

b. APCO means the Association of Public-Safety Communications Officials.

c. Backhaul means a network that provides network communications between RF transmission sites, communications centers where consoles are located, and the master core network control location.

d. Backup Dispatch Center is located at Walton County EOC.

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e. BER means bit error rate.

f. CAI means Common Air Interface for a P25 radio network.

g. Contract means a binding agreement between two or more persons or parties for the supply of goods and services at a fixed price.

h. Contractor means the offeror/proposer/respondent and any/all subcontractor(s) collectively.

i. Contractor’s Project Manager means the person designated by the Contractor to represent the Contractor during the length of the project.

j. County means Walton County, Florida.

k. County IT means Walton County Information Technology staff.

l. County’s Project Manager means an employee designated by the County to represent the County during the project and approve all purchase orders.

m. DC means direct current.

n. Factory Acceptance Test is a comprehensive testing of the fixed infrastructure system and equipment at the Contractor’s factory location prior to shipment of the system to the field for installation.

o. Factory Staging and Acceptance Test means that the communication system will be assembled to the fullest extent possible at the Contractor’s factory location for the purpose of testing the system as a whole, and for the purpose of demonstrating its functionality to the County prior to shipment to the field.

p. FCC means the Federal Communications Commission.

q. Final System Acceptance means that the Contractor has implemented the entire system, successfully completed all components of the System Acceptance Test Plan including the 30-Day Performance Period, and the County’s Project Manager has provided written notice of Final System Acceptance to the Contractor’s Project

Manager.

r. Functional Acceptance Test Plan means a test procedure and check list specific for their system that exercises and demonstrates each and all of the required and proposed features, functions and capabilities including those of the user equipment and dispatch consoles.

s. Greenfield Site means the construction of a new tower site complete with road, compound, fencing, equipment building, generator, etc., required by the vendor’s design in order to meet coverage or other requirements.

t. Prime, when referenced to a backup power generator, means the output available with varying load for an unlimited time; average power output is 70% of the prime power rating; typical peak demand of 100% of prime-rated KW with 10% of overload

Walton County Tower Sites P a g e | 4 capability for emergency use for a maximum of 1 hour in 12; overload operation cannot exceed 25 hours per year.

u. Project means the collaborative effort of the Contractor and the County to complete the planning, design, implementation, testing and acceptance of the system.

v. Project 25 or P25 means a standard for digital radio communications, as published in the TIA-102 series, for use by federal, state/province, and local public safety agencies in North America to enable them to communicate with other agencies and mutual aid response teams in an emergency.

w. RF means Radio Frequency.

x. Service Area is a specific user’s geographic bounded area of concern.

y. Sheriff’s Office IT mean Sheriff’s Office Information Technology staff

z. Standby, when referenced to a backup power generator, means the output available with varying load for the duration of the interruption of the normal source power;

average power output is 70% of the standby power rating; typical operation is 200 hours per year (Emergency Standby) with a maximum expected usage of 500 hours per year (Standby).

aa. Turnkey Solution means that if the Contractor’s system, as engineered and installed, does not meet the contractual technical and functional requirements, all additions or modifications required in meeting those technical and functional requirements to satisfy the communication requirements of the County as specified in this ITN and resulting Contract, shall be provided and performed at the sole expense of the

Contractor.

bb. VAC means volts alternating current.

cc. VDC means volts direct current.

1.3 Standards of Work

A. The applicable sections or portions of the standards, regulations, and codes of the entities listed below shall apply to the Contractor for the equipment and site preparation and for the installation, operation, maintenance, and service of the system by the Contractor.

a. APCO Project 25 System and Standards Definition and Functional Requirements as defined in TIA-102 Standards documents, latest revisions.

b. FCC Rules and Regulations, Code of Federal Regulations, Title 47, Chapter I, including:

i. Part 17 - Construction, Marking and Lighting of Antenna Structures

ii. Part 90 - Private Land Mobile Radio Services

iii. Part 101 - Fixed Microwave Services

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c. Division 27 - Shall govern installation and cabling requirements in County IT environments including the EOSCC and the Backup Dispatch Center

d. FAA Regulations

i. Vol. XI - Objects affecting Navigable Airspace Part 77

ii. Advisory Circular 70/7460-1L

e. Electronic Industries Association (EIA) Standards:

i. EIA-152 Minimum Standards for Land Mobile Communications, FM, or PM

Transmitters

ii. EIA-204 Minimum Standards for Land Mobile Communication FM or PM

Receivers (25-927 MHz)

iii. EIA-210 Terminating and Signaling Equipment for Microwave

Communication Systems

iv. EIA-220 Minimum Standards for Land Mobile Communications Continuous

Tone Controlled Squelch Systems (CTCSS)

v. EIA-232 Interface between data terminal equipment and data circuit-terminating equipment employing serial binary data interchange

vi. EIA-310 Racks, Panels, and Associated Equipment

vii. EIA-316 Minimum Standards for Portable/Personal Radio Transmitters, Receivers, and Transmitter/Receiver Combination Land Mobile

Communications FM or PM Equipment, 25-1000 MHz

viii. EIA-329 Minimum Standard for Land Mobile Communications Antennas, Part

I - Base or Fixed Station Antennas, and Part II - Vehicular Antennas

f. Telecommunications Industry Association Standard TIA-603 latest revision

g. Telecommunications Industry Association Standard Technical Service Bulletin TSB-

88 latest revision

h. Telecommunications Industry Association / Electronic Industries Association

(TIA/EIA) Standard TIA-222G for communications towers

i. IEEE - Institute of Electrical and Electronic Engineers

j. Military Standard 810 - where specified, radio equipment shall meet specific requirements of parts of Military Standard 810 C, D, E, F, and G

k. National Electrical Code

l. Local Electrical and Building Codes

m. NEMA - National Electrical Manufacturer’s Association

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n. NENA – National Emergency Number Association

i. NENA E9-1-1 PSAP Equipment Standards, NENA-STA-027.3-2018 Section

3.10 Radio/Telephone Headset Interface

o. National Fire Protection Association - (NFPA):

i. NFPA #1221 - Standard for the Installation, Maintenance, and Use of

Emergency Services Communications Systems

ii. NFPA #70 - National Electrical Code

iii. NFPA #37 - Combustion Engines

iv. NFPA #78 - Lightning Protection Code

v. NFPA #110 - Emergency and Standby Power Systems

vi. NFPA #58 - Liquefied Petroleum Gas Code

B. The Contractor shall be responsible for meeting the requirements of the latest revisions of each document at the time of installation regardless of the revision level in place at the time of proposal submittal.

C. At time of installation, the Contractor shall update any non-compliant equipment to the latest specification at no additional cost to the County.

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2. SYSTEM IMPLEMENTATION PLAN

A. Contractors shall include a detailed implementation plan in their proposal.

B. The system implementation shall include the complete installation, optimization, and testing of the infrastructure comprised of self-supporting towers, tower compounds, equipment buildings, generator systems, fencing and site access roads as required.

C. All equipment and services furnished by the Contractor shall meet the requirements of this ITN and the manufacturers' published specifications, comply with all Federal, State, and Local laws, rules, regulations, and ordinances at the time of delivery, and reflect high quality workmanship throughout, and be suitable for the intended purposes delineated herein.

D. The Contractor shall provide detailed plans of processes for tracking and controlling the project and shall include a high-level project plan for the overall Project Schedule, work breakdown structure, project communications, quality assurance, change control procedures, project training, and a transition and cutover plan for each agency.

E. The project plan shall be a dynamic document that shall be continually updated and evaluated as the project progresses.

F. A detailed project plan and schedule shall be required of the Contractor following the system design review.

2.1 Project Communications Plan

A. The Contractor shall provide a communications plan that includes contact information for the members of the project team and escalation procedures to be followed if there is an issue that may put the project or a portion of the project at risk.

B. The County shall require the Contractor’s Project Manager to keep notes of every meeting and to circulate them to the County project team.

C. The Contractor’s Project Manager will request feedback on the previous meeting’s minutes at the beginning of every project meeting and publish any clarifications.

D. The communications plan must show all levels of project reporting throughout the project lifecycle.

E. The County requires a regularly scheduled bi-weekly (every two (2) weeks) project meeting or teleconference starting immediately after the project implementation kick-off meeting.

F. At the County’s discretion, the frequency of the regularly scheduled project meetings or teleconferences shall increase in frequency to weekly as the pace of the project escalates.

G. As required, the County may schedule additional meetings.

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H. Items to be included in the communication plan include the following at a minimum.

a. Project team contact information

b. Escalation procedure

c. Scheduled meetings

d. Meeting cycles

e. Meeting agendas

f. Meeting report sample

g. Required attendees by title (engineer, user, executive, etc.)

h. Project status reports

i. Status report sample

j. Status report cycle

k. Content to be provided in the status report

l. Status report recipients

m. Secure web site for document sharing

2.2 Project Schedule

A. The Contractor shall provide a detailed Project Schedule that shall be referenced to the

Contract execution date.

B. The Project Schedule shall include important milestones and logical breakpoints during which the County and the Contractor will assess the progress to date and prepare for the remaining project tasks.

C. The first milestone of the Contractor’s schedule shall be Contract execution. All other events shall be referenced in number of days from Contract execution.

D. The Project Schedule shall clearly identify the tasks to be performed by both the County and the Contractor.

2.3 Extension of the Project Schedule

A. Installation and satisfactory operation of the system shall be completed within the time period established in the Contract.

B. Requests for Contract time extensions shall be considered as described in the Contract.

2.4 Work Breakdown Structure

A. The Contractor shall provide a work breakdown structure that provides a detailed listing of the physical work and tasks to be accomplished by the Contractor and the County consistent with the Contract.

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B. The work breakdown structure may be a part of the Project Schedule, but it shall include, at a minimum, the following:

a. Task description

b. Responsibility for completion of work task

c. Date scheduled for completion

2.5 Quality Assurance Plan

A. The Quality Assurance Plan is a physical guideline of the steps taken to demonstrate that system implementation is proceeding in a manner that is consistent with the County expectations and industry standards.

B. The Quality Assurance Plan shall include a narrative and/or photos of the acceptable final product of each phase of the installation and physical inspection points shall be indicated and include the following as a minimum guideline:

a. The system design review

b. System design documentation

c. Site development and construction

i. Civil work completed

ii. Tower construction

iii. Equipment shelter foundations

iv. Equipment shelter installation

v. Grounding and bonding

vi. Electrical installation

d. As-built documentation

e. Final System Acceptance

C. The County and the Contractor shall have the appropriate representatives inspect and approve the quality of work before moving to the next step and the inspection points shall be a part of the Project Schedule.

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3. FAA AND FCC FILINGS AND AUTHORIZATIONS

3.1 FAA Study and Determination

A. The County shall be responsible for filing and obtaining any and all FAA studies, FAA determinations, and site surveys prior to construction, and for the notification of the FAA upon the commencement and the completion of construction by the filing of the appropriate forms and submittals.

B. The Contractor shall be responsible for any required site layouts, preliminary and final construction drawings, and documentation required for construction permits needed for construction of the tower and compound.

3.2 FCC Antenna Structure Registration

A. The County shall be responsible for all work, studies, and costs for obtaining or modification of all FCC Antenna Structure Registrations required for antenna structures provided in this Project.

3.3 Environmental, Tribal, Historical, MPE, EME/NIR, and Other Studies

A. The County shall be responsible for obtaining all FAA, NEPA, SHPA and other environmental studies and notifications, and any other requirements needed to obtain the

FCC Antenna Structure Registration (ASR) for tower sites provided or modified by the

Contractor in this project.

B. The County shall be responsible for obtaining any and all required maximum permissible exposure, electromagnetic exposure, non-ionizing radiation, or any antenna structures provided or modified in this project.

3.4 AM Detuning

A. If applicable, the Contractor shall be responsible for all studies and costs related to AM detuning services for tower structures provided or modified in this Project including the assessment and correction of pattern distortion where wireless antenna structures (towers) can unintentionally interfere with an AM broadcast station's antenna pattern.

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4. COMMUNICATION SITE DEVELOPMENT

A. The primary purpose of this ITN is to design and construct all new tower sites required by the proposed new P25 public safety communications system.

B. The new Walton County P25 communications system will require a significant number of new tower sites to meet the established coverage goals in this ITN. Contractors should assume the following tower site requirements for pricing purposes:

a. Towers will be constructed on County owned or County provided property.

b. Each new self-supporting tower shall constructed to the minimum height listed in

Table 1 New Tower Site Locations, and be constructed with all solid members.

c. The foundations shall be drilled pier type and the Contractor shall assume that each pier will be 90 feet deep by 6 feet in diameter for the 300’ towers with a typical structural steel rebar cage for each pier. The three towers that require a minimum

200’ AGL structure may utilize a smaller drilled pier foundation design. The

Contractor shall provide a typical foundation design for each tower size in their response to this ITN.

d. Each tower site compound will include a fenced area of 100 foot x 100 foot, and include a cleared area of 150 foot x 150 foot in size.

C. The Contractor shall have total turnkey responsibility for site development and for the site implementation to assure a single point of contact for all communications.

D. The Contractor shall furnish all design and engineering services, and install the communication sites, towers, foundations, fencing, communications shelters, emergency power standby generators, grounding and bonding systems, and other necessary hardware and components in accordance with the requirements of this ITN.

E. The Contractor shall be responsible for the provisions and cost of factory staging and testing, warehousing, insurance, storage and the security of supplied goods and equipment prior to and during the construction phases of the project.

4.1 Construction Site Management and Safety Plan

A. The Contractor shall prepare a preliminary construction site management plan and include it in their proposal.

a. The construction site management plan shall depict the planned areas of construction including the staging areas for storage trailers, heavy equipment, cranes, tower steel and materials, and spoils

b. The plan shall include the management of traffic for the delivery of tower steel, water, concrete, equipment shelter, generator, and other materials

B. The County or the public may occupy some of the sites during the entire construction period.

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a. Public access, property, health and safety considerations shall exceed all other considerations and the construction will require that the Contractor schedule and plan the work accordingly

b. Construction work shall at all times be subject to alteration and revision if necessary for public health and safety considerations

C. The Contractor shall be responsible for any site modification required to accommodate the equipment proposed for the Project.

D. The Contractor shall secure the construction site at all times and may utilize temporary security and safety fencing as needed.

E. The Contractor shall be responsible for the restoration of any part of the site impacted, other than what is approved as a permanent improvement to the site.

4.2 Construction Drawings and Permitting Documentation

A. The Contractor shall be responsible for preparing construction drawings and site development documents for a complete and fully operable installation which is in compliance with this ITN and with the latest version of the National Electrical Code (or local electrical code, if applicable), local building codes, environmental laws, zoning and planning regulations or ordinances, land use restrictions, Federal Aviation Administration and Federal Communications Commission rules and regulations, State or County regulations governing road access and entry, OSHA guidelines and all other applicable local, State or Federal codes, regulations, laws and/or ordinances.

B. Modification or relocation of existing site equipment, structures or materials shall require prior approval by the County’s Project Manager.

C. The Contractor shall provide preliminary construction drawings depicting the proposed construction within 30 business days following execution of the contract.

D. The construction drawings shall be approved by the County prior to commencement of work.

E. Drawings shall, at a minimum, but not be limited to, illustrate:

a. The location of the land parcel and the boundaries, utility easement, access road, the cleared area and the fenced compound

b. Site features including fencing, access points, impervious areas, appropriate storm water features, storage facilities and staging areas, and security features

c. The location of the tower and the equipment to be installed relative to any existing adjacent structures and property lines

d. Soil boring test results

e. Mechanical and structural details and specifications of tower foundations

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f. Electrical grounding systems

F. The Contractor shall be responsible for all permits, inspections, fees, documentation, filings, etc. associated with permitting and the construction of the communication site and work.

G. The County shall be responsible for all Local / County Zoning approval, FAA studies and

FCC ASR work.

H. The Contractor shall prepare all specifications, plans, documents, and required forms, submittals, and exhibits required to obtain the necessary approval and permits from the

County building department.

4.3 As-Built Drawings and Documentation

A. The Contractor shall keep up-to-date, marked-up prints of the Project construction drawings.

B. Markings indicating changes to the drawings shall be red or green and clearly visible.

C. The Contractor shall furnish four (4) original sets of "As-Built" drawings and one (1) soft copy in Adobe PDF format to the County’s Project Manager at the completion of the

Project.

D. The Contractor shall also provide Project drawings on a USB thumb drive in editable format, i.e., AutoCAD or Visio.

E. Electrical breakers must be clearly marked using permanent labels.

4.4 Construction Materials

A. Materials specified by the Contractor shall be new and of first quality as defined in industry standards.

B. The Contractor shall not make substitutes unless prior approval has been obtained from the County Project Manager.

C. The Contractor shall be required to assume full responsibility for the specification of materials and equipment employed in construction of the Project and agrees to make no claims against the County for damages to such materials and equipment except for that which is solely caused by the County, their employees or agents.

D. The Contractor shall be responsible for managing the storage of all materials purchased and turned over to him/her by the County and shall receive all delivered items by suppliers at the job site or at a staging area to be furnished by the Contractor.

4.5 Workmanship

A. All workmanship shall conform to normal and accepted standards for the telecommunications industry and will be thoroughly examined by the County and/or their

Walton County Tower Sites P a g e | 14 representatives at various stages during Project implementation and before Final System

Acceptance.

B. The Contractor shall directly supervise all construction and installation of site structures and equipment including electrical wiring, towers structures and foundations, tower and site grounding and bonding systems, tower lighting systems, antenna mounts, etc.

4.6 Construction Work Coordination

A. The Contractor shall be solely responsible for the work performed by any subcontractor(s) and shall coordinate the work to ensure that interference between electrical conduits, cable support trays, grounding wire, structural members, and other work shall be avoided so that the Project is completed within budget and on schedule.

B. The Contractor shall coordinate their work schedule for site activities with the County to ensure that there is no interference to concurrent communications operations at the sites of work.

4.7 Clearing of Land

A. The Contractor shall be responsible for grubbing and the clearing of all brush, trees, organic matter, top soil, and any other obstructions including asphalt and concrete at the communication site and access road.

4.8 Communication Site Cleanup and Debris Removal

A. The Contractor shall be responsible for and shall oversee the cleanup and the daily removal of all rubbish and construction debris from the work site.

B. The Contractor shall supply a dumpster or similar trash storage/removal device where a substantial amount of construction debris is generated.

C. Upon completion of all work, the entire construction site area shall be left clean and free of trash, debris, mud, dirt, dust, scrap materials, and excess materials.

4.9 Sanitary Facilities

A. The Contractor shall be responsible for providing sanitary facilities at each work site for the duration of the Project.

4.10 New Tower Site Development Tasks

A. The Contractor shall furnish all equipment and services for the turnkey development of the communications site as described in this section.

B. All tower sites will be constructed on County owned or provided property.

C. The Contractor shall certify that they are able to construct a turnkey tower site to County specifications, on the land parcel provided by the County, and that all costs to do so are included in their proposal, including permitting costs, to the extent that the County will obtain zoning approval for the tower, a permit can be obtained for its construction, and

Walton County Tower Sites P a g e | 15 there are no inaccuracies or discrepancies with actual conditions. Should there be any cost not included in the proposal, it will be the Contractor’s responsibility.

D. The Contractor shall furnish all equipment and services to develop the new greenfield communications sites in Walton County.

E. The Contractor shall perform the following services:

a. Prepare site construction drawings showing the layout of all new and existing site components.

b. Conduct site walks to collect pertinent information from the sites such as the location of Telco, power, existing facilities, etc.

c. Prepare record drawings of the site showing the as-built information

d. Perform construction staking around the site to establish reference points for proposed construction

F. The Contractor shall furnish all equipment and services at a minimum, to clear, develop and construct the following items at the communications site.

a. Grub the communications site to within 50-feet of the fenced communication site compound

b. Construct a security gate with ASR signage at the road entrance to the site

G. The Contractor shall provide the necessary access road to the tower site.

H. The Contractor shall furnish all equipment and services for the development of a communications system compound including, at a minimum, the following:

a. Construct a 100-foot x 100-foot fenced communications site compound

b. Furnish and install a 300-foot AGL self-supporting communications solid member tower with drilled pier foundations. Assume drilled pier foundation dimensions of 6 foot X 100 foot for proposal purposes and provide an incremental cost if the foundation is more or less than this total volume.

c. Furnish and install a 12-foot X 20-foot prefabricated concrete communication shelter with a patio add-on area for the generator, and a supporting concrete slab foundation.

d. Furnish and install a diesel fueled backup power generator system with outdoor enclosure, foundation, transfer switch, and belly tank with minimum 72 hour run time at full load.

e. Furnish and install one (1) spare 2-inch conduit from the inside of the generator enclosure to the equipment shelter near the transfer switch that shall be capped and labeled on each end.

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f. Furnish and install one (1) spare 4-inch conduit from the inside of the equipment shelter to a pull-box just outside the compound fence but near the driveway to the site for future telecommunications access that shall be capped and labeled on each end.

g. Furnish and install a grounding system for the compound including tower, shelter, fencing, electrical service, backup generator, and any other compound equipment.

h. Furnish and install an H-frame electric meter pedestal that supports four (4) utility meters each with 120/240VAC 200-Amp service. This will serve the County shelter and three (3) future tenants.

i. Furnish and install all equipment required for the installation of the underground electrical utility service with pad-mounted transformer if required.

4.11 Tower Structure General Requirements

A. The Contractor shall be responsible for providing the tower structure and foundations, and for furnishing and installing all associated hardware, lighting and safety systems and appurtenances.

B. All work shall be performed in accordance with good engineering practices and comply with all local, State and Federal codes, rules and ordinances.

C. The Contractor is required to adhere to local, state and national electrical code and building regulations.

D. The tower shall be a self-supporting model constructed with solid legs, and solid cross members.

E. The fabrication and installation of the tower shall include all hardware, brackets, fasteners, climbing and safety systems, ancillary devices such as LED tower lighting systems, and engineering and installation services required to complete the Project.

F. The Contractor shall be responsible for ensuring that the tower meets all design criteria, labor services, guarantees and installation requirements contained in the Contractor’s specifications, or in national or industry standards to which such specification refers.

G. The work to be performed shall include site preparation, grading, foundation installation, tower erection including climbing ladders and safety climb system, LED tower lighting systems, transmission line ladders and transmission bridges, lightning rods, grounding system and ground bus bars, and the touch-up of any scrapes or damage to the protective galvanizing.

H. All exothermic welds and any touch up repairs to galvanized components shall be coated using a cold galvanizing compound spray that contains a minimum of 93% zinc such as

Rust-Oleum Cold Galvanizing Compound.

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4.11.1 Reference Standards

A. All materials, design, and construction procedures shall be in accordance with the latest versions of the applicable industry standards, specifications,

a. American National Standard for Telecommunications:

i. T1.334-2002, Electrical Protection of Communications Towers and Associated

Structures

ii. T1.313-2003, Electrical Protection for Telecommunications Central Offices and

Similar Type Facilities

iii. T1.333.2001, Grounding and Bonding of Telecommunications Equipment

iv. ANSI-J-STD-607-A-2002, Commercial Building Grounding and Bonding

Requirements or Telecommunications

b. ANSI/NFPA 780-2004, Standard for the Installation of Lightning Protection Systems

c. ASTM Standard A123, A153, B695

d. Harris AE/LZT 123 4618/1 Rev. F, Jun-17 Installation Manual

e. Federal Aviation Administration Advisory Circular AC 70/7460-1L

f. EIA/TIA-222G, Structural Standard for Antenna Supporting Structures and Antennas, Telecommunications Industry Association (TIA)

g. NFPA 70: National Electric Code (NEC) - Latest Edition

h. NEMA - National Electrical Manufacturer’s Association

i. TIA-1019-A: Standard for Installation, Alteration and Maintenance of Antenna

Supporting Structures and Antennas, Telecommunications Industry Association (TIA)

j. Building Codes for State of Florida and Walton County, Florida

k. OSHA - Occupational Safety and Health Standards

i. 29 CFR Part 1010 - Occupational Safety and Health Standards

ii. 29 CFR § 1910.27 - Ladders

iii. 29 CFR Part 1926 - Safety and Health Regulations for Construction

B. The standards listed herein are meant to serve as a guide and shall be superseded by any and all current applicable industry standards and/or local codes at the time of the installation.

4.11.2 Geotechnical Exploration

A. Once the final location of all tower sites has been determined by the Contractor, a geotechnical exploration of the tower site shall be performed by the Contractor to allow for the tower foundation design to be finalized for each site.

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4.11.3 Tower Foundation Construction and Design

A. Contractors shall base their initial proposed pricing for the drilled pier foundation design on a 6 foot diameter by 100 foot depth. After the geotechnical report is performed for each site, the drilled pier foundation may be adjusted to meet the actual requirement. The

Contractor shall provide an incremental increase or decrease in cost based on whether the actual required foundation is larger or smaller than the proposed pier.

4.11.4 Concrete Materials Testing

A. A concrete materials test shall be performed for each tower foundation.

B. This test shall include slump testing of the concrete materials and unconfined compressive strength testing of concrete cylinders molded at the time of the concrete pour.

C. Cylinders shall be provided for each foundation pier and shall be tested at 7 and 28 days after the concrete pour.

D. A report of test results for slump testing and unconfined compressive strength testing shall be provided to the County immediately following each test.

4.11.5 Design Plans and Submittals

A. The required design documentation shall be approved, signed, dated, and sealed by a registered Professional Engineer (structural) qualified and licensed to practice in the State of Florida.

B. The Contractor shall deliver signed and sealed copies of all required tower structure and foundation design documentation no later than fifteen calendar days prior to foundation excavations for the tower.

C. One paper copies and one (1) soft copy in Adobe PDF format shall be provided to the

County’s Project Manager; these submittals are in addition to any documentation submittals that may be required for the permitting process.

D. The Contractor shall prepare and submit for County approval, all plans, specifications, foundation drawings and scale drawings of the tower depicting its overall height, the number and height of sections, the width of each section and antenna loading and their specified heights.

E. The Contractor shall submit for County approval, a profile view of the tower containing structural details, tower loads, and engineering notes.

F. Any documentation for the tower requested by the County for planning approvals shall be supplied in a timely manner.

G. In accordance with TIA-222, complete plans, assembly drawings, or other documentation shall be supplied showing the necessary marking and details for the proper assembly and

Walton County Tower Sites P a g e | 19 installation of the components, including the member sizes, design yield strength of the structural members and the grade of structural bolts required.

H. Foundation reactions shall be based upon factored loads.

I. The tower plans shall detail attachment height, antenna quantity, antenna model or type, mount quantity, mount type and line size that was included in the structural analysis.

J. Alternatively, the total effective projected area representative of all the antennas and mounts at each elevation may be provided along with the associated line sizes.

K. The tower plans shall detail the following data for the site specified used in the structural analysis:

a. Exposure Category C shall be used

b. Tower and shelter shall be Risk Category III-IV structures

c. Foundation reactions for the loading combinations considered

d. Soil design parameters or source of data

L. Upon completion of tower construction, the Contractor shall deliver to the County, one

(1) complete original copies of the tower and foundation as-built documentation, and a soft copy in Adobe PDF format, and in both DWF and DWG file formats.

M. All tower drawings shall become property of Walton County when the tower is accepted.

4.11.6 Manufacturers’ Certification and Support

A. All tower materials, hardware, and accessories shown on the plans and drawings shall be certified in writing by the tower manufacturer as being suitable for the purposes shown.

B. The manufacturer’s certification shall include the following statement: "The tower and foundation designs meet or exceed all requirements of the Walton County ITN 24-26 and

TIA-222G.”

C. The Contractor shall provide a letter from OEMs which guarantees manufacturer’s support after the Warranty Period, and in the case of any conditions or problems which cannot be remedied by the Contractor, or in case the Contractor defaults on its warranty and/or maintenance agreements and obligations.

D. Subsystems are defined as various tower components including the FAA-approved tower lighting system.

E. The Contractor shall provide a written guarantee that all proprietary components and repair parts shall be available for a period of at least 10 years from the date of Project final completion.

4.11.7 Construction Notifications

A. The County shall be notified when the inspection of the various construction phases of the tower and foundation are required.

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B. For the foundation, the Contractor shall notify the County as to construction status at the following times:

a. Ten days prior to start of excavation - notify as to the start date of construction and estimated completion date of construction

b. The day of the completion of the reinforcement steel

c. The day of the concrete pour

C. For the tower structure, the Contractor shall notify the County as to construction status at the following times:

a. Ten days prior to start of tower installation - notify as to the start date of construction and estimated completion date of construction

b. The day the tower reaches the greatest height

c. The day tower installation is completed

4.11.8 Materials

A. All equipment and materials, except with the expressed written permission of the County, shall be new and unused, meet telecommunications industry standards, and, where applicable, be registered with and approved by the Federal Communications Commission and the Federal Aviation Administration.

B. The County reserves the right to reject and require the return, at the Contractor’s expense, of any and all components that are defective or fail to comply with the specification.

C. Such rejects and/or returns will neither invalidate the remainder of the contract.

Rejections of materials for cause shall not provide an extension of time to the Contractor.

D. All materials shall conform to the provisions of TIA-222 where applicable, with respect to physical properties, manufacture, workmanship, and factory finishes.

4.11.9 Corrosion Protection

A. All fabricated tower assemblies and parts shall be hot-dipped galvanized after fabrication in accordance with the requirements of ASTM Standard A123.

B. All hardware and other attachments, including antenna mounts, climbing steps, transmission line support systems, etc. shall be galvanized per ASTM Standard A153 and

B695 or constructed of inherently corrosion resistant materials suitable for such applications.

C. Other types of zinc coating or plating are not acceptable.

D. The Contractor shall furnish written certification that all installed tower components have been assembled and hot dipped galvanized in accordance with the minimum requirements outlined in the specifications herein.

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4.11.10 Loads and Stresses

A. The design of the tower shall take into account dead and live loads induced by the structure itself and all appurtenances, and all stress applied to the tower and its appurtenances by wind forces.

B. The minimum safety factors listed in TIA-222 shall apply under the most severe combination of dead load plus live loading.

C. The tower design shall allow no tower member to be stressed more than 90%.

4.11.11 Appurtenances

A. Appurtenances shall include, but not be limited to, the following:

a. Tower-mounted equipment

b. Antennas and antenna mounts and hardware

c. Antenna platforms

d. Microwave antennas and radomes

e. Transmission lines and waveguides

f. Climbing ladders and safety climb system

g. Tower lighting systems

h. Transmission line ladders

i. Lightning rod

4.11.12 Lightning Rod

A. The tower shall be equipped with a top-mounted lightning rod or “air terminal” system.

B. The lightning rod shall be installed to a height greater than the tallest appurtenance.

C. The lightning rod shall be bonded to tower steel.

4.11.13 Antenna System and Transmission Line Loading

A. The towers shall be designed to support, at a minimum, the antenna systems, hardware and transmission lines in the following table.

300-foot AGL Tower Site Loading

Qty Model Height (feet) Mount Line Type Azimuth Use

1 Lightning Rod 300 Top

3 BMR12 300 (Base) 6-foot Side Arm

(3) 1-5/8-inch

LDF

Omni P25 TX/RX

2 BMR12 300 (Base) 6-foot Side Arm

(3) 1-5/8-inch

LDF

Omni Future

1 TTA 300 To Tower 1/2-inch LDF NA P25 RX

1 VHLP6-6W 285 (CL) Pipe Mount EWP52 TBD Future

1 DB224 250 (Base) 6-foot Side Arm 7/8-inch LDF Omni Future

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Table 1 - Tower Design Loading

4.11.14 Wind Speed Rating

A. The tower structure and foundations shall be designed and constructed to support the specified loads in accordance with EIA/TIA-222-G, the 2014 Florida Building Code, 5th

Edition, based upon an ultimate 3-second gust wind speed of 140 mph converted to a nominal 3-second gust wind speed of 124 mph per section 1609.3.1 as required for use in the TIA-222-G Standard per Exception #5 of Section 1609.1.1.

B. Exposure Category C and Risk Category III-V shall be used for all structures.

4.11.15 Tower Twist, Sway, and Displacement

A. The towers shall be designed that when fully loaded the twist and sway limits at the microwave antenna mounting positions do not exceed their 10 dB degradation points under conditions of 60 mph service wind speeds as recommended by TIA-222 for the antennas specified in the antenna loading tables.

4.11.16 Transmission Line Support System

A. Cable ladders for transmission lines shall be installed to minimize tower face wind loading and shall not interfere with the climbing ladder or safety system.

B. A cable support system shall be designed to accommodate all proposed transmission lines plus a 100% growth factor.

C. Standard bolt-in hangers shall be used; snap-in hangers are not acceptable.

D. The cable support systems shall be of galvanized steel construction, and shall have mounting hardware of stainless steel or galvanized steel construction.

E. No drilling of the tower legs or cross bracing shall be required to install the cable support device.

F. The ladder structures shall be spaced at maximum 3-foot intervals to enable hangers to be installed at 3-foot intervals.

G. Holes shall be provided in the tower support members, tower hanger adapter plates, or separate ladder structures to allow installation of bolt-in cable hangers.

H. The 3/8-inch and 3/4-inch mounting holes shall be precision punched or drilled and…