HomeMy WebLinkAboutPublic Agency SUP21-000005 Solon Carlsonot
PI]BLIC AGENCY
ITEM DATE SUBMITTED BY
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Memorandum
To:
From:
Date:
Re:
Debbie Root, Senior Planner
TJ Frans, Project Manager
SU B-2 1 P-04 & SU P2 1 -000005 ( Lexington Apartements)
April 16,2021
The Engineering Department provides the following comments on a request by Solon Carlson for a
Plat Amendment and a Special Use Permit to amend the Sky Ranch Business Park Phase 2
Replat to combine lots 3, 6 & 7, Block 4 into one single platted lot to allow for construction of
Lexington Apartments , an 84 unit multi-family development in a C3 zone consisting of three 24-plex
buildings and one 12-plex building. The subject property is located on the northwest corner of
Adam Smith Ave. and Thomas Jefferson Street.
Process
1. This project shall follow the typical subdivision process. Civil infrastructure drawings shall
be approved by the Engineering Department prior to building permits being submitted.
lmprovements shown on the construction drawings shall be completed and dedicated to
the City (where applicable) prior to any buildings receiving certificates of occupancy.
Development Plans
1. Development Plans - Prior to commencing construction, plans must be prepared by the
developer's engineer and approved by the City Engineering Department which shall include the
following items:
a. Street section and alignment (including curb and gufter);
b. Sidewalk (sidewalk width based on street classification);
c. Sanitary sewer (per City and DEQ requirements);
d. Potable water (per City and DEQ requirements);
e. Stormwater facilities (per City requirements/storm water manual);
f. Street lighting (per City standards);
g. Street signage (per City and MUTCD requirements);
h. Vertical Datum based on NAVD 88 Datum.
Lexington Apartments
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General
1. Easements for Public Utilities shall be 10 feet wide minimum along all front lot lines. A
minimuml0 feet wide easement (or larger if deemed necessary by the City Engineer in order to
facilitate future maintenance operations of utilities) may be required along select interior lot
lines to facilitate pressure inigation or other utilities.
2. Appropriate easements for emergency access, transmission lines and/or other utilities shall be
clearly indicated, with recorded instrument numbers provided for said easements, on the face
of the final plat (visually and in writing). Existing easements shall be shown on all construction
drawings.
3. All street, sewer mainline, water mainline, fire protection, and street light facilities must be
dedicated to the City.
4. Construction of facilities to be dedicated and/or within public right-of-way shall be performed by
an appropriately licensed public works contractor and shall be inspected by and constructed to
City of Caldwell specifications.
5. Prior to commencement of construction in any dedicated right-of-way, or construction of any
improvement intended for dedication to the City or connected to a City facility, the City
Engineering staff is to be notified. This preferably will take place in a pre-construction
conference scheduled by the engineer of record in which all appropriate personnel and utilities
are present. Appropriate City personnel are to be notified in advance of all testing (including
compaction, pressure and coliform, etc.) and given opportunity to be present during conduct of
the testing. The engineer of record or his designated representative is to witness alltests (not
covered by City inspectors) and a log of inspection visits and testing results is to be kept by the
engineer of record or his representative.
6. The developer is to employ a responsible design professional, preferably the engineer of
record, to oversee and inspect construction, to perform and/or observe all requisite testing of
completed facilities, and to certify that improvements have been constructed according to
approved plans and in compliance with applicable City, State, and Federal standards.
7. The engineer of record shall be held responsible to ensure that subdivision improvements are
in substantial compliance with said engineer's design. Following the construction of the
subdivision improvements, the developers engineer shall provide the City of Caldwell
Engineering Department with electronic (.dwg) format record drawings spatially referenced to
the ldaho State Plane Coordinate System-East Zone, North America Datum (NAD) 83. Vertical
control shall be referenced to the North America Datum (NAVD) 88 for future reference and to
establish that the engineer of record has caused construction to occur in substantial
compliance with the design of said engineer of record.
8. Any note, item or drawing element on the plats, construction drawings, engineering drawings
and/or design drawings related to the property inconsistent with City Codes, Policies and/or
Ordinances shall not be construed as approved unless specifically addressed and granted by
City Council.
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Riqhts-of-Wav
1. Additional right-of-way along Thomas Jefferson St. and Adam Smith Ave. is not required.
Street
1. Additional roadway improvements along Thomas Jefferson St. and Adam Smith Ave. is not
required.
Water
1. All on site water mains will need to be looped into existing mains for fire flow and water quality
purposes. lnternal main sizing and construction plan approval, will be dependent upon the
availability of fire flow.
2. Domestic water is currently stubbed to the property via two 8" diameter mainlines. Applicant
shall obtain water from these stubs.
3. lf buildings are constructed to include individual units that could feasibly or will be sold
separately, each unit shall be serviced separately
4. The location of water service, including sizing of mains, providing of easements, frontage
construction, and offsite construction are to be decided during review of improvement plans.
This development will be required to comply with the Water Master Study.
Sanitary Sewer
1. lt shall be the responsibility of the applicant's engineer to verify that connection to existing sewer
mainlines will not exceed the functional capacity of said mainlines. Provision for connectivity by
future developments shall be met in accordance with current City standards.
2. The location of sewer seryice, including sizing of mains, providing of easements, frontage
construction, and offsite construction are to be decided during review of improvement plans.
3. The Developer will be required (where applicable) to extend all sewer and water mainlines to the
center of adjacent roadways for connectivity by future developments. Locations of said
extensions will be decided during the review of the improvement plans.
4. lf buildings are constructed to include individual units that could feasibly or will be sold separately,
each unit shall be serviced separately.
5. Any easements for sewer lines not in the right-of-way should be at a width sufflcient to construct
same and not less than 20 feet in width. Easements for adjacent sewer and water lines not in the
right-of-way shall be at a width sufficient to construct the same and shall be no less than 30 feet
in width.
6. A 20'wide all-weather surfaces may be required to be constructed over mainlines that fall outside
the public right-of-way. All weather surfaces shall be constructed sufficiently to support heavy
equipment necessary to construct and maintain sewer under all seasonal weather conditions.
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lrrigation
1. The subject lots are located within the boundaries of previously platted subdivision. Pressurized
irrigations is already supplied via the existing subdivision. Applicant shall utilize the existing
services and system.
Storm Drain
1. As noted previously, provision is to be made for the disposal of stormwater drainage in
accordance with the City Stormwater Management Manual and any updates adopted
subsequent to this application. lt is to be noted that retention designs will be denied in most
instances. A copy of this policy is available upon request. The engineer of record is to provide
calculations, which indicate that the assumptions in his stormwater drainage plan comply with
the requirements of the stormwater manual. ln this case, if a storm water system is existing, the
burden of proof is on the developer to verify the capacity is sufficient for the proposed
development.
2. The applicant shall identify and retain all historicaldrainage discharge points from the property
for the purpose of draining on-site storm water detention facilities.
3. The final plat drawing should indicate that storm water detention basins are to be placed in
common lots in accordance with the referenced Stormwater policy. A note should be placed on
the final plat indicating that all areas designated as common areas are to be operated and
maintained by the home/business owners association.
Plat
1. Prior to approval of the final plat, subdivision facilities must be completed or an appropriate
construction security provided. There may be temporary restrictions to the obtaining of building
permits, even with acceptable construction security, depending on fire protection, emergency
service requirements, and City approval of the sanitary sewer system. A 50% temporary
restriction to obtaining of building permits will be enforced until all facility construction has been
completed, inspected and certified by the Applicants engineer including all punch list items.
2. Upon recordation of the plat, the Engineering Department is to be provided with a PDF copy of
the recorded final and 3 full paper set.
3. An electronic (dwg.) copy of the Final Plat suitable for mapping and addressing purposes will
be required with Final Plat application submittal.
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