Fox Hill Drive Response to Comments-8-8-22
www.alliant-inc.com 733 Marquette Avenue, Suite 700
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Fox Hill Drive
Memorandum
RESPONSE TO COMMENTS
To: Erik Henricksen, PE, Sharmeen Al-Jaff, Joe Seidl, PE, City of Chanhassen
From: Seth Loken PE
CC: Denali Homes, Andy and Maria Awes
Date: August 8th, 2022
Subject: Response to City Planning Commission Comments
This memo provides a response to city planning commission comments. On July 19 th the project
was tabled by City of Chanhassen planning commission for a request to explore saving more trees
throughout the property. Two exhibits have been added to demonstrate what we believe to be max
savings: Removal of the stub road requirement completely, conversion of full public ROW to
private roadway contained within outlot, but it is our understanding that the stub road is a
requirement per city comprehensive planning. We will continue to work with city staff to increase
the canopy coverage to the maximum extent possible but believe based on the requirements of
both city and watershed district, this will be the maximum canopy coverage for the additional 3
lots. Since the planning commission, a geotechnical investigation has occurred, and this plan is
updated to reflect the initial findings. Responses to city comments are shown below in red.
SUBDIVISION
Engineering:
1. Any underlying easements within public easements, including public right-of-way, must be
vacated or released prior to recording of the final plat. Noted
2. An additional 10 feet of right-of-way shall be dedicated along Carver Beach Road prior to
recording of final plat providing a 50-foot-wide right-of-way in total. 10’ of additional ROW
shown.
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3. The ESCP and tree preservation plans must address the excavation of the proposed
stormwater conveyance system on Lot 1, Block 1 and it’s impacts upon submittal of final
plans for review and approval. Erosion control has been updated.
4. The street within the newly dedicated 50-foot right-of-way extending from Fox Hill Drive
shall be constructed to the maximum extent feasible. Road has been extended to the
maximum extent possible.
5. The applicant shall provide exhibits illustrating the alignment, profile, and grades of the
proposed street design from Fox Hill Drive to the future connection at Big Woods Drive
upon submittal of final plat. Noted. Will provide with final ppat.
6. The applicant and their Engineer shall work with City staff in amending the construction
plans, dated June 17, 2022 prepared by Seth Loken, PE with Alliant Engineering to fully
satisfy construction plan comments and concerns. Final construction plans will be
subject to review and approval by staff prior to commencement of any construction
activities. Noted.
7. The applicant shall enter into a Development Contract and pay all applicable fees and
securities prior to recording of final plat. Noted.
Water Resources Recommendations:
1. Private stormwater BMPs to serve the needs of the development must be wholly located
outside of all public easements upon submittal of the final plat. Noted.
2. The applicant shall provide a copy of conditional approval from the RPBCWD as part of the
final plat submittal. Noted.
3. The applicant shall provide a copy of the geotechnical report and infiltration test results as
part of the final plat submittal. Geotechnical report provided. Shows seams of sandy/silty
soil with clay soils. Infiltration tests were not conducted initially as to not remove any
trees. Based on preliminary findings, infiltration tests will occur.
4. The applicant must update the Hydrologic and Hydraulic models per City and Watershed
District comments and submit updated computations and models in their native forms
with the final plat and final construction plans. Noted.
5. The applicant must demonstrate that the proposed project will not raise the 100-year high
water level of the onsite wetland as part of the final plat submittal. Noted.
6. The applicant must demonstrate that the proposed project will be in compliance with the
3-foot freeboard requirement to ponding features as part of the final plat submittal.
Freeboard in general is well over 3’. See grading plan/stormwater.
7. The applicant must confirm the stormwater routing of the onsite BMPs and include pipe
profiles, details of outlet control structures, underground infiltration details, and
connections to public infrastructure as part of the final plat submittal. Noted.
8. The applicant must work with staff to improve the BMP configuration to the maximum
extent given the restrictions of the site and RPBCWD rules. The applicant and engineer
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understand the city’s desire to consolidate BMP’s. Watershed rules stipulate that
abstraction volume must be provided prior to discharging to a wetland, in order to provide
this to meet the watershed’s rules the site needs a BMP prior to discharging to the wetland.
The alternative to providing the BMP would be to pipe all disturbed area and impervious
surface that drains to the west, this would result in significant tree removals and change in
hydrology to the wetland. The alternative BMP configuration for drainage that is routed
directly to Lotus Lake would be to pipe all disturbed area and impervious surface to a BMP
downstream of lot 1 block 1. In order to do this would result in a significantly larger
footprint meaning further tree removal and disturbance to existing lakeshore and slopes.
Additionally, the BMP for lot 1 block 1 is confined due to existing utilities near the
lakeshore.
9. The applicant shall enter into an Operations and Maintenance Agreement for any proposed
privately owned stormwater facilities which shall be recorded concurrently with the final
plat. Noted.
Parks:
1. Full Park fees in lieu of additional parkland dedication and/or trail construction shall be
collected as a condition of approval for the four lots. The Park fees will be collected in full at
the rate in force upon final plat submission and approval. Based upon the current single-
family park fee rate of $5,800 per dwelling, the total Park fees for the three new additional
homes would be $17,400. Noted.
Environmental Resources Coordinator:
1. Tree protection fencing shall be installed prior to any construction activities and remain in
place until construction is complete. Noted.
2. Any trees removed that are shown on plans dated as preserved shall be replaced at a rate
of 2:1 diameter inches. This is noted based on a final approved plan.
3. A Conservation Easement shall be dedicated over the wooded side yards on Lots 1 and 2.
To be provided at final plat.
4. The applicant will relocate the infiltration basin to the edge of the wooded area on Lot 2
and eliminate the fragmentation of the wooded wetland buffer. Infiltration basin moved
towards the home to eliminate fragmentation of wooded wetland buffer.
5. The applicant shall revise the tree removal plans and calculations to show tree removal for
all stormwater infrastructure and utilities needed on site. Tree removal plans have been
provided.
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Building:
1. A final grading plan and soils report must be submitted to the Inspections Division before
building permits will be issued. Noted.
2. Building permits must be obtained before beginning any construction. Noted.
3. Building plans must provide sufficient information to verify that proposed buildings meet
all requirements of the Minnesota State Building Code, additional comments or
requirements may be required after plan review Noted.
4. Retaining walls (if present) more than four feet high must be designed by a professional
engineer and a building permit must be obtained prior to construction, retaining walls
under four feet in height require a zoning permit. Noted.