HomeMy WebLinkAbout025_concurrent construction request-pkg
190 NORTHSTAR LANE
BOZEMAN, MT 59718
406-581-5730
www.headwatersmt.net
Page 1 of 2
April 12, 2023
Onsite Concurrent Construction Request
Urban Villas - #23033
As part of the Urban Villas site plan, an existing hydrant needs to be moved approximately 15’ to line up
with a proposed curb island and a storm pipe needs to be connected to an existing storm drain inlet in
North 27th Avenue. Both of these items require a concurrent construction request to be able to obtain a
building permit prior to infrastructure completion. Below we describe the requirements of concurrent
construction as well as describe the process for completing this infrastructure improvements.
Requirements:
1. Any required on-site or directly adjacent extensions of water mains, sewer mains, stormwater
system, or streets to be dedicated to the public:
• Must be located entirely within publicly held easements or rights-of-way
The water main serving the hydrant that is being moved is within an existing 30’ water pipeline &
access easement per document #2273769 as filed at the Gallatin County Clerk and Recorders. The
storm inlet that is being tied into is within the 90’ dedicated right of way for North 27th Avenue as
dedicated on the Phase 3 plat of Cattail Creek Subdivision (J-415).
• Must serve only a single lot
Both infrastructure improvements only serve lot 3A, Block 2 of the Amended Plat of Cattail Creek
Phase 3.
• Are the subject of an irrevocable offer of dedication to the city upon completion of the project
Understood
• The development is under the control of a single developer who must retain control of the entire
project until final completion
The development will remain under control of the current developer until final completion.
• All work is under the supervision of a single general contractor
The work will reman under the supervision of a single contractor.
• No subdivision of land is involved
No subdivision of land is proposed.
2. The DRC must determine when the standards of this subsection BMC 38.270.030.C.1 are met
• The fire department must consider whether adequate fire protection services are available from
existing hydrants, and water supply exists to meet needs during construction
The site is currently served by four hydrants other than the hydrant proposed to be moved. The
hydrants range from 54’ to 197’ away from the site as shown on the attached concurrent
construction plan. A hydrant test was conducted by the City of Bozeman on February 17th, 2023
for the existing hydrant on Catalyst Street. The test showed a forecasted flow of over 5,000 gpm
at 20 psi. This proves adequate water supply for this site and surrounding hydrants.
3. Approval of the final engineering design, including location and grade, for the infrastructure
project must be obtained from the engineering department, and the Montana Department of
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Environmental Quality when applicable, prior to issuance of any building permit for the
development
Infrastructure plans and specifications will be submitted to the City of Bozeman for the fire
hydrant move and storm inlet connection. A submittal to DEQ is not expected since the
infrastructure improvements are not on mains.
4. A certificate of occupancy must not be issued until all on-site and off-site water, sewer,
stormwater, and street improvements necessary to serve the site are installed and accepted or
approved as applicable by the city.
Understood
The proposed hydrant move will be completed early in Phase 1 to allow site grading to be completed.
This will allow the hydrant to be utilized during portions of construction of the Phase 1 building as well
as buildings in subsequent phases. The connection to the storm inlet will not impede emergency
services. It may require a partial closure of North 27th Avenue, but due to the street width, it is expected
that two-way traffic will still be possible.
Let me know if you need anything additional for this request.
Sincerely,
________________
Jeremy May, P.E.
Headwaters Engineering, Inc.
www.headwatersmt.net
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Plot Date: 4/12/2023 6:29 AM
H:\1086\019\ACAD\SHEETS\CONCURRENT CONST.dwg
REVISION DATE:
190 NORTHSTAR LANE, BOZEMAN, MT 59718
HEADWATERSMT.NET 406-581-5730
PROJECT #:
LOCATION:
URBAN VILLAS
CONCURRENT CONST.
PLAN
JRM
04/12/23
1086.019
BOZEMAN
EXISTING HYDRANT EXISTING HYDRANT
CONNECT STORM
TO EXISTING INLET
EXISTING HYDRANTNORTH 27TH AVENUECATALYST STREET
EXISTING HYDRANT TO BE MOVED
URBAN VILLAS SITE
EXISTING HYDRANT TO BE MOVED