HomeMy WebLinkAbout17-1 Utilities 2019-09-24 1
Utilities
This section is a response to the requirements of the City of Bozeman Unified Development
Ordinance Section 38.220.060 relative to Utilities.
Affected Utilities
All affected publicly and privately-owned utilities have been notified and provided copies of the
Preliminary Plat for the Bozeman Gateway Subdivision. These include:
· Northwestern Energy Company (gas and electric)
· Montana Opticom
· Charter Communications
· Century Link
Copies of the letters to each of these utilities requesting design input are included at the end of
this section. Responses, if received prior to the printing of this submittal are included at the end
of this section.
This narrative provides information relative to existing and proposed utilities for the Bozeman
Gateway Subdivision, PUD including the proposed Phase 4.
Northwestern Energy Facilities
Existing natural gas and power run along the north and southern boundaries of the development
as well as along the entirety of South 29th, Harmon Stream Blvd. and the eastern side of Fowler
Avenue. Northwestern Energy Company will provide natural gas and electric service for Phase
4. These facilities will be located in 10-foot standard utility easements. The electric and natural
gas lines will be placed underground.
Communication Facilities
Charter Communications will provide telephone, TV and internet service to the development.
Century Link Communications will provide local telephone service to the development.
Montana Opticom will provide fiber to the development. Facilities will be installed concurrent
with the services provided by Northwestern Energy during the development of the project.
Sanitary Sewers
As a part of the original subdivision, an overall sanitary sewer plan was developed. The plan
includes extending existing 8” sewer main from Phase 1 east along Technology Boulevard to
provide sewer service for Phase 4. The plan identifies that an 8” line will have adequate capacity.
The sewer main will be designed to extend service to the west at a depth of bury no less than a
minimum cover of 4 feet.
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Water Mains
As a part of the original subdivision, an overall water plan was developed. The plan includes
connecting the existing 8” water main lines between Phase 1 and Phase 2 through Phase 4 along
Technology Blvd West to provide water services for Phase 4. The plan identifies that an 8” line
will have adequate capacity. The water main will have a standard bury depth of 6.5 feet.
Storm Water Facilities
As part of the original subdivision, an overall storm water plan was developed. The Bozeman
Gateway Development Drainage Plan consists of two systems, the major drainage system and the
minor drainage system. The major drainage system will convey runoff generated by the 25-year
and 100-year events north under Huffine Lane via a 36” RCP culvert. The minor drainage
system will consist of 11 minor drainage basins. Runoff volumes from these minor basins will
discharge into onsite detention ponds and StormTech Detention systems designed for the 10-year
event. The depth of the storm drain lines conveying minor storm events to detention ponds or
underground systems is anticipated to range from 3 to 6 feet.