Keller Butte

Elevation Info: NAVD88 Elevation: 4815 ft / 1467 m
Latitude/Longitude (WGS84) 48° 3' 41'' N; 118° 47' 44'' W

 

Existing Conditions
The Keller Butte site is located Northeast of Coulee and Southeast of Nespelem and is a primary communications link between Govt. Center and the east reservation areas.

  • Tower is a Fire Lookout Structure that is being utilized as a communication Tower in combination of a manned Fire Lookout Tower.
  • It was observed and clearly visible that there have been structural modifications previously performed to tower base and anchor bolts.
  • The construction method and structural capacity of the tower base foundation is unknown. The construction method and structural capacity of the tower base foundation is unknown ICI cannot comment on the adequacy of the existing tower foundation. Tower base foundation does not display visual deterioration in the concrete piers. Tower anchor bolts appear to have been encapsulated with concrete as part of a structural reinforcement effort.
  • Tower has had guying added as additional secondary structural reinforcement.
  • Mild corrosion is evident on tower assembly bolts.
  • Climb Warning signs, RF Warning signs and No Trespass signs were not posted.
  • The antenna mounts and antenna mounting hardware for several antennas are rusting.
  • No lightning rod is placed on top of tower.
  • The tower is in in compliance with the specifications for a class” A” climb facility as defined in the TIA-222-G tower design standard.
  • In general, the site is not adequately grounded. Sub-surface ground system cannot be verified. Site grounding is not in compliance and does not meet MOTOROLA R56 standards.
  • AT&T is collocated as a third-party tenant on tower also with a separate Equipment Shelter to house their radio equipment.
  • Site road access is good with winter access issues.
  • Site is not served by commercial Power. Primary power to this site is provided by a fixed angle solar array.
  • An outdoor 11kW Generac backup power generator unit on auto start controls (primary site) and battery backup only on secondary site. 
  • The existing equipment shelter is good condition. Equipment shelter is placed on full size concrete slab foundation.
  • Equipment shelter is not equipped for environmental conditions. No climate control (HVAC) or dust control.
  • There is no security fence or anti-climb system in place to restrict unauthorized personnel from accessing this structure or deterring vandalism and theft. 
  • Tower is overloaded in its current configuration per the requirement of the TIA/EIA-222-F or G Standards.
 
 

Initial Recommendations

  • It is ICI’s professional opinion it will not be economically feasible to repair or modify the tower to meet the requirement of the TIA/EIA-222-F or G Standard. Another cause for concern is that the existing lookout tower is not designed to be utilized as a communication tower and would require extensive structural modifications and the result would still restrict the CCT from any future growth. This would also aggregate both primary and secondary sites together which results in one site.
  • It is ICI’s professional opinion it would be most feasible to upgrade the site by erecting a new tower 150’ self-supporting lattice tower and placing new 12’ x 30’ Prefabricated concrete equipment shelter with the emergency back-up generator housed in the equipment shelter.
  • This site location is a desirable location for Colocation. It also would resolve all site deficiencies and consolidate all antennas and ancillary equipment to a single structure.
  • AT&T would relocate to new structure.