PUBLIC SAFETY COMMUNICATION TOWERS NARRATIVE for … Ranch News... · PUBLIC SAFETY COMMUNICATION...

Northern Simulcast Cell Narrative and Impact Report 1

PUBLIC SAFETY COMMUNICATION TOWERS NARRATIVE for GRIGS ROAD (11760 GRIGS ROAD)

NORTHERN SIMULCAST CELL LOCATION AND EXTENT

Background: In 1997 Douglas County began building the 800 MHz Digital Trunked Radio System (DTRS) for Public Safety use. This original system was planned for a 5 site simulcast system but was changed to a 4 site Smart Zone when other agencies connected to the system. The 5th site was not implemented as other agencies planned to cover the south end of Douglas County; however the towers were never built. The four sites became the base system that other agencies joined and eventually evolved into the Statewide DTRS system. Since the initial build out, the southern end of Douglas County has had minimal or nonexistent public safety radio coverage. The areas in the northwest portion of the County have had spotty coverage and suffered from capacity issues during events. In an effort to resolve coverage issues, the Sheriff’s Office developed a multi-phase plan for upgrading radio coverage to include new towers and equipment. The intent is to create two simulcast cells in northern and southern Douglas County. Simulcast cells, over stand-alone trunked repeater sites, create vastly improved public safety radio communications and the efficient use of our existing 800 MHz frequencies. This will improve overall radio coverage throughout the county, increase penetration of radio signals into buildings, and reduce radio busy signal during heavy use and critical incidents. All first responders, police departments, State Patrol, Sheriff’s Office, fire departments, schools, road and bridge, parks, and other agency radio users traveling through Douglas County, will have access this communication system. Project Proposal: The Northern Simulcast Cell will include construction of one new 180-foot radio tower on Grigs Road and new equipment on the existing Hess Road, Rocky Point, and Silver Heights towers in northern Douglas County. These four properties are excellently positioned to be linked through technologies to form the northern simulcast cell. It is important to note that finding tower sites that provide the required coverage footprint, collocated for backhaul transmissions, and provide simulcast opportunity are extremely difficult to find and acquire. The combination of qualities in the proposed tower sites is almost impossible to duplicate. The sites are in unincorporated Douglas County. A Phase III Drainage Report and any required Grading Erosion and Sediment Control (GESC) permits will be submitted in accordance with County requirements prior to construction of the towers, equipment, and access. The new and existing public safety communication towers will not interfere with electrical systems or cellular communications. The public safety communication network operates on its own frequency, 800 MHz, so the possibility of interference is extremely unlikely. There are four Northern Simulcast Cell towers. Three of the communication towers currently exist in the County; Hess Road, Rocky Point, and Silver Heights, so they will only be receiving new antennas and equipment. Silver Heights and Rocky Point will have new equipment buildings added to them. The fourth tower and equipment on Grigs Road in Highlands Ranch will be newly constructed.


Grigs Road: The proposed Grigs Road Tower is the only new tower in the Northern Simulcast cell. The tower will be located on property owned by the Centennial Water and Sanitation District. The site is on the north side of Grigs Road, about one mile northwest of its intersection with Daniels Park Road and one mile south of Valleybrook Circle, just southeast of the parking lot for the East-West Regional Trail. Douglas County is in the process of negotiating an agreement to lease a portion of the property from the Centennial Water and Sanitation District in support of this project. The approximately 0.1-acre site (50 by 75 feet) will include a 180-foot lattice tower, equipment structure, and a security fence located in the east side of the property. The structure will be prefabricated concrete and 12 feet wide by 26 feet long and 10 feet tall to accommodate related radio equipment. The structure is pre-painted in a brownish beige color. A 1,000 gallon propane tank will fuel the generator when electrical power is interrupted. There will be no water demand for the proposed tower and associated equipment. The tower will be visible from numerous points. The nearest residential properties are about 0.8 miles to the north in Highlands Ranch and will be able to see the tower, as there is little opportunity to use landforms to soften the tower’s presence. The open nature of the lattice tower will nominally reduce its visibility. Xcel Energy’s Daniel’s Park transmission line is visible behind the proposed site when looking south, possibly adding in visual buffering. There is no additional mitigation to make the tower less visible, as this location, and the others provide the required line-of-sight to the other towers in the Northern Simulcast cell. While this location is located in the Highlands Ranch’s OSCA (Open Space Conservation Area), it is in an OSCA subarea that allows public facilities, such as the existing Centennial Water and Sanitation District water tank. Chapter 2, Section B.7.c.1.d and e of the OSCA Plan allows “Electrical, (not to exceed 115 KV), telephone, communication, or natural gas distribution facilities” as a use by right. The proposed Grigs Road tower is located just outside of the Cultural and Historical Protection Overlay Zone (OSCA Plan Chapter 2, Section B.15) that protects the Tall Bull Memorial Grounds. The central ceremonial ring is approximately a mile south of the proposed tower. In a proactive outreach effort, project representatives met with Tall Bull Council members to discuss the project and its potential visibility from the central ceremonial ring inside the Tall Bull site. A tethered helium balloon was flown 180 feet above the tower site as part of a visual analysis. Representatives from Tall Bull Memorial Grounds did not participate in viewing the balloon flights and staff was not able to obtain access to the central ceremonial ring during the balloon flights. The upper portion of the Grigs Road tower will more than likely be visible from the Memorial Grounds. The tower will not require an obstruction warning light as it is below the Federal Aviation Administration’s threshold. The proposed public safety communication tower is within the Conservation Easement area and was a contemplated use. In Section V.5.3(f) of the conservation easement allows for “Public facilities, including but not limited to, facilities for fire and police protection, public and governmental buildings and facilities, and radio, television and communication transmission and reception facilities.”


Any impacts to the existing transportation network will be minimal. The site is accessed through a private driveway to an existing Centennial Water and Sanitation facility off of Grigs Road. A temporary impact will be construction traffic along Grigs during the four (4) weeks it will take to construct the tower and install equipment. The construction crew generally makes one trip into and out of the site per day. The contractor is responsible for repairing damages to the driveway during construction. Once the tower is operational, a monthly maintenance and inspection trip, in a small maintenance truck, will typically be required. The lease for this location includes an access easement to and from the site on the existing CWSD driveway. This tower would also be advantageous for the public safety radio system to the north, which serves Arapahoe County and the neighboring communities. The location of this tower provides improved coverage for Highlands Ranch, northwestern Douglas County, and southwestern Arapahoe County. This area has spotty coverage and “busy outs” during times of increased radio usage and is exacerbated during poor weather and large events. Summary: The Northern Simulcast Cell will provide coverage for law enforcement and government agencies in Northern Douglas County where coverage is spotty and has limited capacity during larger events. Over the years, public safety personnel have had limited capacity and coverage when responding to incidents on Interstate 25, wild land fires, and a SWAT call near Palmer Lake. The lack of capacity makes communication with dispatch difficult and presents a potential risk to first responders and the public.

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PUBLIC SAFETY COMMUNICATION TOWERSNORTHERN SIMULCAST CELL

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NB CONSTRUCTION, INC.2517 W. McDOWELL ROADSUITE 115PHOENIX, AZ 85009PHONE: (480) 947-3599WWW.NBCTELECOM.COM

ENGINEER STAMP

Date

LEASE EXHIBIT

CONFIDENTIALThis document and the informationcontained herein is the confidentialtrade property of CreativeCommunications & NB ConstructionInc. in accordance with MotorolaSolutions and must not be reproduced,copied, or used in whole or in part, forany purpose without the prior writtenconsent. ©2014 NB Construction, Inc. All rights reserved.

Project Name:

Prepared for:

TJMSAM

Job No: Forest Lane

Scale: As Noted

DOUGLAS COUNTY SHERIFFJUSTICE CENTER4000 JUSTICE WAYCASTLE ROCK, COLORADO, 80109

MOTOROLA SOLUTIONS, INC.12 CERCHIO BASSOHENDERSON, NV 89011PHONE: (702) 539-0681WWW.MOTOROLASOLUTIONS.COM

Elevation: ±6293.31' AMSLLongitude: 104° 56' 13.20" West

Latitude: 39° 30' 12.00" North

"Griggs"

6/11/2014

ABN ENGINEERING1317 E. THUNDERHILL PLACEPHOENIX, AZ 85048PHONE: (480) 213-8524WWW.ABNENG.COM

Address T.B.D.

DOUGLAS COUNTYSHERIFF'S DEPARTMENT

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Sheet

Revision/IssueNo.


ENGINEER STAMP

Date

LEASE EXHIBIT


Project Name:

Prepared for:

TJMSAM

Job No: Forest Lane

Scale: As Noted





"Griggs"

6/11/2014


Address T.B.D.


SITE PLAN

LE-3SITE PLAN 1

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GRIGS ROAD


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Revision/IssueNo.


ENGINEER STAMP

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LEASE EXHIBIT


Project Name:

Prepared for:

TJMSAM

Job No: Forest Lane

Scale: As Noted





"Griggs"

6/11/2014


Address T.B.D.


PROPOSEDELEVATIONS

LE-4

Scale: 3/32" = 1'-0"

SOUTH TOWER ELEVATION1 Scale: 3/32" = 1'-0"

NORTH TOWER ELEVATION2 Scale: 3/32" = 1'-0"

WEST TOWER ELEVATION3 Scale: 3/32" = 1'-0"

EAST TOWER ELEVATION4

GRIGS ROAD

SOLUTION DATA SHEET MOTOROLA BUILDING ENCLOSURES

BUILDING SPECIFICATIONSMotorola offers a comprehensive portfolio of building enclosures that addresses the needs of today’s communication environment. Whether you need a building to be constructed on site or fully assembled, Motorola has the right combination of expertise, options and resources to protect and house your fixed network equipment.

Motorola Alternative Building (MAB) – is a lightweight fiberglass aggregate panel shelter, fully scalable and tailored to your specific requirements.

Motorola Standard Building (MSB) – shelter sets the industry standard as an all inclusive concrete shelter that provides maximum protection for your equipment.

MOTOROLA ALTERNATE BUILDING (MAB) AVAILABILITYBUILDING SIZE (W X L) GENERATOR RACK CAPACITY

10 x 12 ft External Generator Optional 4



MOTOROLA STANDARD BUILDING (MSB) AVAILABILITYBUILDING SIZE (W X L) GENERATOR RACK CAPACITY

12 x 10 ft External Generator Included 4






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SOLUTION DATA SHEET MOTOROLA BUILDING ENCLOSURES

FEATURESMOTOROLA ALTERNATIVE BUILDING (MAB) MOTOROLA STANDARD BUILDING (MSB)

Floor and Loadings 200psf wood with i-beam skid perimeter Optional concrete upgrade

300psf concrete design

Roof and Loading 100psf galvaneal steel with membrane 150psf solid concrete

Seismic Design Group 1 – Category D of International Building Code (IBC)Seismic Design optional upgrade

Group 1 – Category D of International Building Code (IBC)Seismic Design optional upgrade

Walls and Loadings 120 MPH wind loading; galvaneal steel with exposed aggregate fiberglass panels exterior

150 MPH wind loading; 4 in solid concrete with exposed aggregate exterior; level 4 bullet resistant; 2 hour fire rated

Grounding Meets or exceeds R-56 Meets or exceeds R-56

Electrical Service Integrated load center includes TVSS, power panel Utility power panel, TVSS, enclosed circuit breakers as safety disconnect all separate components

Surge Protection Type 1 Transient Voltage Surge Suppressor

Type 2 surge suppression optional upgrade

Type 1A and Type 2 surge protection Primary surge protection for control wiring/generator

Type 3 surge suppression optional upgrade

Exterior Outlets One 20A GFI duplex outlet Two 20 A GFI duplex outlets

HVAC Fresh air, thermostat controlled exhaust fan systemOptional single or dual HVAC upgrade

Redundant (2 units) system

HVAC economizer optional upgrade

Emergency Lighting One twin bulb with battery EXIT sign located over doorway One twin bulb with battery EXIT sign located over doorway

Alarms No standard alarmsOptional Upgrades available

Standard: Smoke, Power Fail, High/Low temp, intrusion, tower lights, HVAC, TVSS, Generator, Automatic transfer switch, UPS alarms, and external ground bar anti-theft relay

Safety Equipment Eye wash and first aid kit

Optional upgrade for fire extinguishers

Eye wash and first aid kit and 2 fire extinguishers per room

Floor Insulation R-11 R-4

Wall Insulation R-11 R-11

Ceiling Insulation R-19 R-19

Generator Optional Upgrade available StandardIndoor generator room optional upgrade

UPS Optional Upgrade available Standard

Cable Tray Size 18 in Wide 24 in Wide

Warranty 2 year structural 2 year interior (HVAC, generator, TVSS, UPS)

Optional Structural Warranty Upgrade

10 year structural

2 year interior (HVAC, generator, TVSS, UPS)

MOTOROLA and the Stylized M Logo are trademarks or registered trademarks of Motorola Trademark Holdings, LLC and are used under license. All other trademarks are the property of their respective owners. © 2011 Motorola Solutions, Inc. All rights reserved. R3-2-2009A

Motorola Solutions, Inc. 1301 E. Algonquin Road, Schaumburg, Illinois 60196 U.S.A. motorolasolutions.com

http://www.motorolasolutions.com

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PUBLIC SAFETY COMMUNICATION TOWERS NARRATIVE for … Ranch News... · PUBLIC SAFETY COMMUNICATION...

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