HomeMy WebLinkAbout2_16-432 Black Olive_eng rev
CITY OF BOZEMAN
ENGINEERING DEPARTMENT
Alfred M. Stiff Professional Building
20 East Olive Street
P.O. Box 1230
Bozeman, Montana 59771-1230
phone 406-582-2280
fax 406-582-2263
skohtz@bozeman.net
www.bozeman.net
MEMORANDUM ------------------------------------------------------------------------------------------------------------------------------
TO: DEVELOPMENT REVIEW COMMITTEE, BRIAN KRUEGER
FROM: SHAWN KOHTZ, DEVELOPMENT REVIEW ENGINEER RE: BLACK OLIVE (#16-432)
DATE: 11-2-16
------------------------------------------------------------------------------------------------------------------------------ The following comments pertain to review of the submitted materials for the above referenced project:
Code Requirements Requiring Plan Corrections
1. Bozeman Municipal Code (BMC) 38.23.070.A.1 states: The developer shall install complete
municipal water and sanitary sewer system facilities, or a system allowed by 38.21.030.D,
and may be required by the city to install municipal storm sewer system facilities. These systems shall be installed in accordance with the requirements of the state department of
environmental quality and the city, and shall conform with any applicable facilities plan.
The city's requirements are contained in the Design Standards and Specifications Policy and
the City of Bozeman Modifications to Montana Public Works Standard Specifications, and
by this reference these standards are incorporated into and made a part of these regulations. The developer shall submit plans and specifications for the proposed facilities to the city
and to the state department of environmental quality and shall obtain their approvals prior to
commencing construction of any municipal water, sanitary sewer or storm sewer system
facilities.
The City is analyzing downstream sanitary sewer capacity to accommodate the proposed project.
We have placed a flow monitor in a sewer manhole at one location in the 6-inch main on Black
Street. We have also placed a monitor in the 10-inch main at the intersection of Bozeman
Avenue and Main Street. The flow monitor at Bozeman and Main failed the morning of 11-2-16, so we have sent in the flow monitor for repairs. Upon repair (approximately 1.5- 2 weeks), we will re-install the flow meter. A significant storm event must occur during flow monitoring to
obtain the data that is needed, and we will wait for that event to occur. Upon obtaining the
necessary data, the City will finalize analysis of sanitary sewer capacity for the proposed
project. If, upon data analysis, any sanitary sewer upgrades are necessary to accommodate the proposed project, the upgrades must be completed prior to site plan approval.
2. BMC 38.24.100.C states: At the intersection of each driveway or alley with a street, no
fence, wall or planting in excess of 30 inches above the street centerline grade shall be
permitted within a triangular area where corners are defined by two points on the right-of-
Page 2
way line, 15 feet on each side of the centerline of the driveway or alley and a point on centerline ten feet outside the right-of-way. Any driveway or alley wider than 30 feet curb
to curb at the right-of-way line shall use the vision triangle standard for local streets when
intersecting local, collector, or arterial streets.
One parking spot on Olive Street encroaches on the vision triangle from the main drive access to the building. The parking spot must be eliminated. Subsequently, the section of
curb in the vision triangle must be painted and signed to indicate no parking in that
location. The applicant must indicate this change on the plans prior to site plan approval.
3. BMC Section 38.23.030.A states: The developer shall install complete drainage facilities in accordance with the requirements of the state department of environmental quality and the
city, and shall conform to any applicable facilities plan and the terms of any approved site
specific stormwater control plan. The city's requirements are contained in the design
standards and specifications policy and the city modifications to state public works standard specifications, and by this reference these standards are incorporated into and made a part of these regulations.
The proposed detention/irrigation storage chamber has adequate volume to meet the requirements, but there is not enough detail to determine volume available for detention when a storm event occurs. If a portion of the detention is used for irrigation, will adequate
volume be maintained for stomrwater runoff? For example, if a storm event occurs, will a
portion of the water in the chamber flow to the storm sewer system to accommodate the next
storm, particularly in the winter months when no irrigation is occurring? The applicant must provide additional detail of the operation of the detention/irrigation storage chamber prior to site plan approval.
Snow melt water from vehicle tires as well as wash-down water from cleaning the parking area must be routed through a sand and grease trap before discharge to the City drainage system. The sand and grease trap must be indicated on the plans prior to site plan approval.
The applicant must provide a stormwater system maintenance manual for the proposed detention/irrigation system for review and approval prior to site plan approval. Subsequently, the property owner or future condo owner’s association will be responsible for maintenance of the system.
The proposed storm sewer mains from the inlet at the intersection of Olive and Black are indicated as 12-inch mains. The minimum storm sewer main size allowed by the City is a 15-inch main. The applicant must adjust the plans to indicate the minimum storm sewer main size prior to site plan approval.
It appears that water from the eastern building edge will flow across the sidewalk, where it could freeze in the winter. The applicant must adjust the proposed design to include an alternate drainage path that does not route drainage onto the sidewalk. The applicant must adjust the plans to indicate this change prior to site plan approval.
4. BMC Section 38.24.100.D.2 states: Trees which are located in the street vision triangle and
which preexisted the adoption of the ordinance from which this chapter is derived may be allowed to remain, provided the trees are trimmed such that no limbs or foliage exist below
a height of ten feet above centerline grades of intersecting streets.
Page 3
The applicant must adjust the landscaping plan to indicate that trees within vision triangles
will be “limbed up” to a minimum of 10-feet above ground surface.
5. BMC Section 38.23.180 states: the transfer of water rights or the payment of cash-in-lieu (CIL) of water rights shall be provided.
The applicant must contact the City Engineering Department (Brian Heaston) for an
analysis of CIL of water rights and pay CIL of water rights due prior to sit plan approval.
6. BMC Section 40.03.960 A&B states: The operator of a restaurant or food preparation
establishment discharging wastewater containing greater than 25 mg/l of oil and grease or that has a recurrence with grease building or blockage of sewer lines shall immediately install an approved grease trap. All sand and grease traps shall be properly maintained and serviced at the
owner's expense. Records of maintenance and service for the sand and grease trap shall be made
available to the city upon request by the engineer.
The applicant is advised that a grease interceptor, conforming to the latest adopted edition of the Uniform Plumbing Code must be installed with any development responsible for food
preparation. It is not clear if the shop in the ground floor of the building will include food
preparation. The applicant must clarify the necessity of a grease interceptor for this
application and if necessary, show the grease interceptor on the plans prior to site plan approval.
7. Bozeman Municipal Code (BMC) Section 38.23.060.A states: Where determined to be
necessary, public and/or private easements shall be provided for private and public utilities,
drainage, vehicular or pedestrian access, etc. A new power pole and overhead electric line appears to be indicated off the subject
property. The applicant must demonstrate existing easements or obtain easements for any
offsite private utility placement prior to plan approval.
Site Specific Plan Corrections
1. Trees must not be placed within 10 feet of utility mains or services (COB Design Standards
Section V.D.5.c.). This setback is not maintained for the proposed fire service. The
applicant must adjust the plans to indicate the fire service line location at least 10-feet from the
existing boulevard tree prior to site plan approval.
2. The traffic impact study (TIS) submitted with the project is labeled as a “Draft.” The TIS must
be finalized and stamped by the professional engineer in charge of the analysis. The applicant must submit the finalized TIS for final review prior to site plan approval.
3. Note 5 of the “General Utility Notes” on Sheet C0.1 must reference the City of Bozeman
Modifications to Montana Public Works Standards and Specifications. The applicant must
adjust the note on the plans and submit the adjusted plan prior to site plan approval.
4. Note 5 of the “Water System Notes” on Sheet C0.1 must reference the City of Bozeman
Modifications to Montana Public Works Standards and Specifications. The applicant must
adjust the note on the plans and submit the adjusted plan prior to site plan approval.
Page 4
5. Since the front entrance will be on Olive Street, the project must be re-addressed. The current
address is on Black Avenue. The applicant must contact the City Engineering Department (Bill
Stetzner) to correct the addressing.
Advisory Comments
6. Plans and specifications for any fire service line must be prepared in accordance with the City’s
Fire Service Line Policy by a Professional Engineer and be provided to and approved by the City
Engineer prior to initiation of construction of the fire service or fire protection system. The applicant shall also provide Professional Engineering services for construction inspection, post-construction certification and preparation of mylar record drawings. Fire service plans, and
domestic services 4” or larger, shall be a standalone submittal, separate from the FSP. City of
Bozeman applications for service shall be completed by the applicant.
7. Plans and Specifications for water and sewer main extensions, streets, and storm water improvements, prepared and signed by a professional engineer (PE) registered in the State of
Montana shall be provided to and approved by the City Engineer. Water and sewer plans shall
also be approved by the Montana Department of Environmental Quality. The applicant shall also
provide professional engineering services for construction inspection, post-construction certification, and preparation of mylar record drawings. Construction shall not be initiated on the public infrastructure improvements until the plans and specifications have been approved and a
preconstruction conference has been conducted.
Building permits will not be issued prior to City acceptance of the site infrastructure improvements unless all provisions set forth in Section 38.39.030.C of the Bozeman Municipal Code are met to allow for concurrent construction.
8. BMC Section 38.24.060.B.4 states: All arterial and collector streets and intersections with
arterial and collector streets shall operate at a minimum level of service "C" unless specifically exempted by this subsection. Level of service (LOS) values shall be determined by using the
methods defined by the most recent edition of the Highway Capacity Manual. A development
shall be approved only if the LOS requirements are met in the design year, which shall be a
minimum of 15 years following the development application review or construction of mitigation
measures if mitigation measures are required to maintain LOS. Intersections shall have a minimum acceptable LOS of "C" for the intersection as a whole.
The City’s most current data from the City of Bozeman Transportation Master Plan, Existing and Projected Conditions Technical Memorandum (May 23, 2016) indicates that the intersection
of Willson Avenue and College Street, within 0.5-mile of the proposed project, operates with a
LOS “E” and “F” for AM and PM Peak Hour conditions, respectively. However, the City has approached the adjacent neighborhood residents regarding an upgrade of that intersection in the past. The residents rejected plans to upgrade the intersection from its present status in order to protect the historic character and nature of the area. On that basis, the intersection is
considered to be constructed to its maximum lane and turning movement capacity. As such,
BMC Section 38.24.060.B.4.a states that LOS less than “C” is acceptable.
CC. ERF
Project File