Response - PC staff_report_Eagle_Bluff - 7-20-21 Meeting
Memorandum
TO: Erik Henricksen, Jill Sinclair, Matt Unmacht, Ryan Pinkall and Bob Generous - City of
Chanhassen
FROM: Mark Rausch, PE and Tyler Stricherz, EIT
CC: Marty Schutrop
DATE: August 2, 2021
SUBJECT: Response to Planning Commission Staff Report July 20th, 2021
Note: Alliant responses to RPBCWD comments are shown in red.
Building
1. A building permit must be obtained prior to beginning work at the property.
Noted
Engineering
1. A cross access agreement shall between Lots 1 and 2, Block 1 shall be recorded
concurrently with the final plat.
Noted, Developer to work on agreement.
2. The final plat shall be updated to include a 10-foot drainage and utility easement on the
northern portion of Lot 2, Block 1 as well as abutting the 68.38 foot long property line in
the northwestern corner of the lot.
Easement has been updated on the final plat.
3. All existing and proposed improvements located within public drainage and utility
easements will require encroachment agreements and shall be recorded concurrently with
final plat.
Noted, Developer to work on agreement.
4. Stormwater facilities shall be privately owned and maintained, and located outside of
public drainage and utility easements, and the final plat shall be adjusted accordingly.
The drainage and utility easement has been updated to not include the private
infiltration basin.
5. The applicant and their Engineer shall work with City staff in amending the construction
plans to fully satisfy staff comments prior to the recording of the final plat.
Eagle Bluff
August 2, 2021
Page 2
Noted.
6. If the sanitary service lateral is within 50 feet of the existing well, the well will be
required to be abandoned and the plans updated accordingly. All requirements set forth
by the Minnesota Department of Health regarding the abandonment of the well must be
adhered to.
The note has been added to the site and utility plan.
7. The developer will be required to pay the following fees prior to recording of final plat:
Noted
a) Surface Water Management fee: $21,650.00
b) A portion of the water hook-up charge: $2,476.00/unit, or $4,952.00 for the two units
c) A portion of the sanitary sewer hook-up charge: $691.00/unit, or $1,382.00 for the
two units
d) Park dedication fee: $5,800.00/unit
e) GIS fees: $100 for the plat plus $30 per parcel, or a total of $160.00
Environmental Resources
1. Tree preservation fencing shall be installed around existing trees to be saved prior to any
construction activities and remain installed until completion.
Tree protection fence has been identified on the plans.
2. Buffer yard plantings to the east of the proposed home site include one overstory tree,
two ornamental trees and four shrubs, unless sufficient existing vegetation remains.
Developer to work with the city at the time of construction for proposed home to
determine sufficient existing vegetation.
Fire
1. Private road will need to follow City of Chanhassen Code for Private Roads – including a
turnaround for emergency vehicles.
A hammerhead turnaround for emergency vehicles has been added to the proposed plan. The
emergency turnaround shall be class 5.
Parks
1. Full park fees in lieu of additional parkland dedication and/or trail construction shall be
collected at the rate in force upon final plat submission and approval.
Noted.
Planning
1. The front setback for Lot 1 shall be from the point at which the lot measures 100 feet.
The front setback measures exactly at 100’ As it was submitted prior. The dimension on the
site plan is moved so the setback line is visible.
2. An access and maintenance agreement for the private street shall be recorded with the
plat.
Eagle Bluff
August 2, 2021
Page 3
Developer to coordinate agreement.
Water Resources
1. The applicant shall provide to the City the approved Riley Purgatory Bluff Creek
Watershed District permit prior to issuance of building permits.
Noted, currently working on obtaining permit.
2. The applicant shall submit an updated geotechnical report with borings in the location of
the proposed infiltration basin to ensure infiltration is feasible at that basin location upon
resubmittal of construction plans.
Borings are in process of being scheduled and the report will be provided when
available. Infiltration test for basin 1 has been provided with this submittal.
3. The applicant shall provide a buffer along the southern edge of the infiltration basin to
minimize the amount of sediment entering and clogging the infiltration basin upon
resubmittal of construction plans.
A retaining wall has been added to provide buffer.
4. The applicant shall provide evidence that Wetland 1 will remain a viable wetland with the
proposed plan that reduces hydrology to the wetland upon resubmittal of construction
plans.
Wetland 1 has been proven to be a viable wetland with the bounce and inundation
calculations added to the stormwater management plan.
5. The applicant shall amend the plans to show double row of silt fence placed at the buffer
edge of Wetland 1 instead of at the wetland edge as currently shown.
The silt fence is as far from the wetland as possible while maintaining the ability to
grade the proposed updates.
6. The applicant shall provide a SWPPP if one was created. If there is not a SWPPP, the
applicant shall amend the grading notes on Sheet 6 as appropriate.
Grading notes have been amended.
7. The applicant shall provide the following details for the stormwater infiltration basin
upon resubmittal of construction plans:
a. The infiltration basin shall be restored with a native seed mix or other appropriate
plantings per MPCA guidelines instead of sod as proposed.
The basin is now being restored via native seed. See notes on canopy and
restoration plan.
b. A defined basin overflow shall be designed instead of letting water spill over the
entire northern berm.
Basin overflow has been updated. See cross section detail on grading plan.
Eagle Bluff
August 2, 2021
Page 4
8. The applicant shall provide the LFE/FFE for the proposed building upon resubmittal of
construction plans to show freeboard is being met.
This was provided on initial submittal. As noted in the grading legend. The garage
floor elevation is 924.5 and the walkout low floor elevation is 915.5.
9. The applicant shall provide an O&M plan and agreement for the infiltration basin and
outline the parties that will be responsible for O&M prior to issuance of building permit.
Draft O&M plans have been created for both lots individually.
10. The applicant shall submit a wetland delineation report for Wetland 1. The plans will
need to be updated showing the approved wetland boundary and subsequent buffers
based on the delineation.
The wetland Scientist Kjolhaug has started to process of delineating Wetland 1. The
report will be provided when acquired.
11. The applicant shall provide the SWMP fee of $21,650.00 to the City prior to the
recording of final plat.
Noted.