Approval Letter dated 10-25-18October 25, 2018
CITY OF CHANHASSEN
Chanhassen is a Community for Life -Providing for Today and Planning for Tomorrow
Mr. Perry Ryan
Lake West Development, LLC
14525 Highway 7, Suite 265
Minnetonka, MN 55345
Dear Mr. Ryan:
This letter is to formally notify you that on October 22, 2018, the Chanhassen City Council
adopted the following motion:
"The Chanhassen City Council approves the preliminary plat to subdivide 2.14 acres into five
lots and one outlot as shown in plans stamped Received August 29, 2018 subject to the following
conditions:
SUBDIVISION
Engineering:
1. Provide ROW over the entirety of the trail along the west side of Minnewashta Parkway.
2. The survey of existing conditions does not indicate ROW between Glendale Drive and to
the south for approximately 100 feet. (The survey does not correlate with Carver
Count property information which indicates right-of-way for the road section is in
place but a portion of the bituminous trail on the west side of Minnewashta Parkway is
not within the ROW.)
3. No stationing is shown in the plan set.
4. The drainage and utility easements are shown only on the plat. They should also be
conveyed on the site plan. (D&U easements were added to the grading plan but not the
site and utility plan.)
5. Indicate surface water drainage flow arrows on the grading plan.
6. Provide existing and proposed elevations at the following locations: each lot corner, top
of curb or centerline of the street at each lot line extension, center of proposed driveway
at the curb or edge of the roadway.
PH 952.227.1100 • www dchanhassen.mn.us • FX952.227.1110
7700 MARKET BOULEVARD • PO BOX 147 • CHANHASSEN • MINNESOTA 55317
Mr. Perry Ryan
Glendale Drive Homes Approval Letter — Planning Case 2017-07
October 26, 2018
Page 2 of 4
7. Additional conditions will be identified after the developer has an opportunity to revise
the design based upon the current conditions that are considered to be major in nature as
they will require significant changes to the design.
Water Resources:
1. Private stormwater best management practices (BMPs) are not permitted in public
drainage and utility easements. An encroachment agreement will be required for the
private swale within all side yard drainage and utility easements.
2. Easements for private stormwater treatment devices must be recorded against the
properties using the city's private stormwater easement template and approved by the
City Engineer.
3. A Homeowners Association (HOA) encompassing all lots is required to ensure the
technical expertise and a funding mechanism for the operation and maintenance of
stormwater treatment devices is ensured in perpetuity.
4. Operation and maintenance of private stormwater BMPs is required in perpetuity. An
operation and maintenance plan must be approved by the Water Resources Coordinator
and recorded against the properties that details the HOA's permanent inspection,
maintenance, and funding mechanism that ensures stormwater BMPs will function as
designed.
5. To ensure stormwater treatment devices function as designed, the developer is
responsible for the operation, maintenance, and performance of all stormwater
improvements including vegetation, structures, soils, inspections, and erosion/sediment
control for the first five years after project completion. After the first five years,
responsibility shall transfer to the HOA. The developer is responsible for ensuring all
stormwater improvements are functioning as designed at the end of the first five years. If
stormwater improvements are not functioning as designed at the end of the first five
years, as determined by the City Engineer, than the developer shall remain responsible
for all operation and maintenance until devices are functioning as designed.
6. Initration/filtration basins must be located a minimum of 10' om the building envelope
of any primary structure.
7. If an emergency overflow route is adjacent to the property the lowest building opening
must be a minimum of one foot above the emergency overflow (City Code Sec. 19-144).
All EOFs routing onto this adjacent property must be 1' below the lowest floor opening.
Developer proposes a single EOF at elevation 972' on Lot 5 that meets this requirement.
8. EOF routes shall not create a hazard or nuisance condition onto adjacent property (City
Code Sec. 7-78).
9. SWPPP contact must be identified.
Mr. Perry Ryan
Glendale Drive Homes Approval Letter — Planning Case 2017-07
October 26, 2018
Page 3 of 4
10. Developer must provide an erosion and sediment control plan, and dewatering plan
approved by the Water Resources Coordinator.
11. Maximum impervious per lot is 25%.
12. All pervious surfaces require six inches of topsoil and 18 inches of decompaction.
Topsoil shall be tested and approved by the Water Resources Coordinator.
13. The developer shall provide an updated Hydrocad model and stormwater management
plan that is consistent with and supports the engineered plans and geotechnical report.
14. The geotechnical report identifies the presence of groundwater at 972 elevation on Lot 5
(SB -1). There must be three feet of separation between the bottom elevation of
stormwater infiltration devices and the water table. Based on the geotechnical report, the
bottom elevation for an infiltration basin on Lot 5 can be no lower than elevation 975.
The proposed "pond" will need to be lined if less than 3' of separation from seasonal high
water table.
15. The geotechnical report identifies moderately slow permeability of soils. Any infiltration
swales must be sized to allow no more than 6" of ponding depth and drawdown within
24-48 hours.
16. Soil borings and infiltration tests must be performed within the perimeter of all ponds and
infiltration device locations prior to final approval.
17. Design plans must be provided for all vegetated BMPs including contours, grading, inlet
and outlet structures, underdrains, filtration media/amended soils, location and quantities
of all species used. Ecotype must be native or approved native hybrid.
18. Details must be provided and approved for all stormwater treatment devices.
19. The proposed redevelopment requires Minnehaha Creek Watershed District (MCWD)
development review and permits.
20. It is the applicant's responsibility to ensure and submit proof that permits are received
from all other agencies with jurisdiction over the project (i.e. Army Corps of Engineers,
DNR, MnDOT, Carver County, MCWD, Board of Water and Soil Resources, PCA, etc.)
prior to the City issuing permits.
21. Project must meet all stormwater requirements of the city and the MCWD.
22. Project will require stormwater management fees associated with city development
review and permitting process. Fees can be estimated but cannot be accurately calculated
until approvals have been received from the MCWD.
Mr. Perry Ryan
Glendale Drive Homes Approval Letter — Planning Case 2017-07
October 26, 2018
Page 4 of 4
23. The site plan must identify the ability to install a future stormwater pipe that could
connect the development to a regional pond southeast of the development.
24. The development must use Chanhassen Standard Specifications and Detail Plates.
Parks:
1. In lieu of parkland dedication and/or trail construction, full park dedication fees shall be
collected at the rate in force at the time of final plat approval. At today's rate, these fees
would total $29,000 (five lots x $5,800 per lot).
Environmental Resources Coordinator:
1. The minimum number of overstory trees required to be planted in the development is 41.
2. Tree preservation fencing shall be installed around existing trees to be saved prior to any
construction activities and remain installed until completion.
The applicant shall install the required buffer yard plantings on Lot 5 along Minnewashta
Parkway."
Final plat documents must be submitted to the city four weeks prior to the City Council meeting
in which you wish to have your final plat approved. Enclosed is the list of items required for
submittal for final plat approval.
If you have any questions, please feel free to contact me at 952.227.1134 or e-mail at
salj aff2ci.chanhassen.mn.us.
Sincerely,
w
Sharmeen Al-Jaff
Senior Planner
Enclosure
ec. George Bender, Assistant City Engineer
Vanessa Strong, Water Resources Coordinator
Jill Sinclair, Enviromnental Resources Coordinator
Todd Hoffman, Park and Recreation Director
g:\plan\2018 planning cases\18-13 glendale drive homes subdivision\approval letter preliminary plat.docx
ITEMS REQUIRED FOR FINAL PLAT CONSIDERATION
The following items are required to be submitted a minimum of 30 days prior to City Council meeting
and payment of a $250.00 final plat review fee:
1. Submit three (3) sets of full size, 50 scale construction plans and specifications for staff review
and redline.
• Utility plans shall show both plan view and profiles of all utilities (sanitary sewer, water
and storm sewer lines). The plan view must show all drainage and utility easements.
• Grading and drainage plans shall show dwelling type and elevations, wetlands and
wetland buffer areas, stormwater pond NWL and HWL, EOF and catch basin and storm
manhole numbers.
• The construction plans and specifications shall be in accordance to the City's latest edition
of Standard Specifications & Detail Plates.
• The plans shall include traffic signage and street light placement.
2. Drainage calculations for water quantity and quality ponding with maps showing drainage
areas for pre -and post -development conditions and contributing areas to catch basins.
3. Hydraulic calculations and drainage map for the storm sewer design.
4. Tree Preservation Easements (if applicable).
Trail Easements (if applicable).
6. Engineer's Cost Estimate of Improvements:
a. Sanitary sewer system.
b. Water system.
c. Storm sewer drainage system including cleaning and maintenance.
d. Streets, sidewalk and trails.
e. Erosion control.
f. Site restoration (seeding, sodding, etc.).
g. Site grading
h. Street lights & signs
i. Engineering, surveying & inspection
j. Landscaping
7. Five (5) sets (folded) of final plat, one (1) set of reductions (8�/z" x 11 "), and a digital copy in
.tif format.
8. Digital copy of the legal description of the property in a .doc format.
9. Lot tabulations.
Failure to provide any of the above items by the required deadline will result in delaying
consideration of final plat before the City Council