Supplemental SOW_v2.pdf

7.1 Supplementary Statement of Work (SOW)

The contractor must provide all materials and services for work required to complete the installation of a new communications shelter at Barlow District Office. The site is located on the Barlow Ranger District, Mt. Hood National Forest at the following coordinates: Lat 45N 27’ 25.45” Long 121W 7’ 26.01”. The contractor will be required to obtain construction bonding and requisite insurance sufficient to support the construction and/or demolition, as applicable.

The work provided by the contractor shall satisfy the following:

7.1.1 Shelter Design Requirements

A. The Manufacturer of the shelter shall comply with all applicable nationally recognized building and electrical codes.

B. The shelter shall be a PEPRO LLC. 6’x6’x8’ shelter with an integrated 40’ mast. The mast shall articulate to allow access to the antennas while in the horizontal position.

C. The shelter shall include the following equipment.

a. (2) 19” x 84” equipment racks

b. Overhead cable ladder rack to allow for the distribution of power and RF cables from their respective entry points to the equipment rack

c. Standard 6’x6’ Pepro DC lighting fixtures with LED bulbs, connected to a 1-hour rotary timer switch installed near the shelter entrance

d. (1) Rack mounted battery trays, each capable of supporting (3) NorthStar

NSB100FT AGM batteries

e. (1) Rack mounted bus bar

f. (1) Main Ground Bus bar (MGB) installed below the RF entry panel

g. (1) Filtered DC entry port tied to the faraday cage

h. (1) Filtered AC entry port tied to the faraday cage

i. Standard 6’x6’ Pepro AC power layout

j. (1) Surge protection devices (SPD) for solar array connections, SPDs shall be rated for a 48VDC Solar array

k. (1) Surge protection device (SPD) for AC power connection, SPDs shall be rated for commercial power.

l. Standard 6’x6’ Pepro sized HVAC system that provides air conditioning and heat

m. (2) Passive ventilation ports that include hoods, louvers, and screens to prevent insects from entering the shelter

n. The door shall be installed on the South face of the shelter

o. The integrated mast shall be attached to the West side of the shelter and shall articulate to the East over the top of the shelter

p. The manufacturer shall provide (3) 4” mounts to attach to the mast (1) Telewave

ANT150F2 antenna at 40’, (1) Kathrein CL7-150/URM antenna at 30’, (1) Comprod 425-70 antenna at 20’.

D. The shelter design shall include a faraday cage to protect the equipment from transient voltage spikes

E. The shelter shall include an RF entry panel with 9 ports, the appropriate quantity of boots and cushion inserts to support (3) ½” Heliax cables. The RF entry port, boots, and cushion inserts shall be integrated into the faraday cage. The remaining unused RF entry ports shall be capped with covers that are integrated into the faraday cage

F. The shelter design shall be such that it can be deployed on bare unimproved land without the need for excavation or foundation construction.

G. The shelter shall be grounded through Ufer pads placed on native surface; due to the no ground disturbance requirements a traditional ground system cannot be part of the solution.

H. The shelter shall be anchored to the land without the use of guy wires or stakes.

I. The shelter and mast system shall be designed on a site-specific basis and must comply with the current version of TIA-222. The mast system shall be designed to support the following antennas and feedlines:

a. Telewave ANT150F2, 40’, feedline LDF4-50, 4” standoff, USFS

b. Kathrein CL7-150/URM, 30’, feedline LDF4-50, 4” standoff, USFS

c. Comprod 425-70, 20’, feedline LDF4-50, 4” standoff, USFS

J. The roof of the shelter shall include an integrated anchor point that meets OSHA standard 29 CFR 1926.502(d)(15) capable of sustaining 5,000lbs. (22.2KN) of force.

K. The contractor shall also reference the provided PWS, BOM, Shelter Request Form, and this document for design details.

7.1.2 Shelter Delivery and Installation

A. Prior to installation the shelter shall be delivered to:

780 NE Court Street Dufur, Or. 97021

B. The shelter shall be delivered at a minimum of 4 weeks prior to installation.

C. The contractor shall schedule and provide the means to safely offload the shelter at the delivery location.

D. The contractor shall schedule, coordinate, and install the new shelter at the Barlow

District Office.

E. The road system used to access the Barlow District Office is in good condition.

F. The shelter shall be installed in the location marked out on the ground by the Forest

Service Land Mobile Radio staff.

7.1.3 Demolition of Existing Shelter and Tower

A. The contractor shall demolish and dispose of (1) 6’x8’ shelter.

B. The removal of existing 90’ tower and telecommunications shelter will be done in a way that no damage will occur to remaining structures/equipment.

C. Any damage caused by the removal of the structure will be the responsibility of the contractor to repair.

D. All tower steel will be removed to grade and backfill with 2” minus aggregate as necessary.

E. Disposal of all demolition debris is the responsibility of the contractor and shall be discarded in accordance with state, federal environmental regulations as applicable.

F. Tower and shelter debris should be disposed of at Columbia Ridge Commercial Landfill

& Recycling located at 18177 Cedar Springs Ln, Arlington, OR 97812. The contractor shall be required to perform an asbestos test on the debris to certify that there are no asbestos contaminated materials being disposed of.

7.1.4 Commercial Power

A. The existing shelter receives its commercial power supply from a 20A breaker located in the circuit breaker panel of the adjacent building. This power supply is transmitted overhead and terminates in the circuit breaker panel within the telecommunications shelter.

B. The contractor is tasked with supplying a new primary wire and messenger cable. These should be appropriately sized for the 20A service that powers the existing telecommunications shelter.

C. The contractor’s responsibilities also include disconnecting the commercial power from the existing shelter and re-establishing the connection to the new shelter using the same overhead route.

D. The new shelter will be equipped with a weather head that connects to the external power filter box. This connection point will serve as the entry point for commercial power into the new shelter.

7.1.5 Telecom circuits

A. A telecom circuit in existing shelter must be disconnected and removed from the old shelter and reinstalled into the new shelter.

B. The contractor is tasked with the removal and reinstallation of the telco circuit.

C. The contractor is also responsible for the installation of a messenger cable to the new shelter.

D. The contractor must ensure the new shelter is provisioned for the telecom circuit.