Approval Letter 10-15-2014Recreation Center
October, 15, 2014
CITY OF
2310 Coulter Boulevard
CWHUSEN
structures.
7700 Market Boulevard
Mr. Ben Wikstrom
PC Box 147
Lakewest Development, LLC
Chanhassen, MN 55317
14525 Highway 7, Suite 102
Planning &
Minnetonka, MN 55345
Administration
:
Phone 952.227.1100
Re: Fretham 19a' Addition — Planning Case #2014 -08
g
Fax: 952.227.1110
Phone: 952.2271130
Dear Mr. Wikstrom:
Building Inspections
Fax 952.2271110
Phone: 952.227.1180
This letter is to confirm that on October 13, 2014, the Chanhassen City Council
Fax: 952.227.1190
approved the following:
Engineering
7901 Park Place
Phone: 952.227.1160
• Preliminary plat creating four lots,
Fax: 952.227.1170
Engineering:
Fax. 952.227.1310
• Hard cover variances for Lots 1 and 3 of 7.4 percent (32.4 % hardcover) and
Finance
3.2 percent (28.2% hard cover), respectively; and
Phone. 952.227.1140
Fax: 952.227.1110
. Front setback variance for Lot 1 of 10 feet (20 -foot front setback on Bretton
Park & Recreation
Way) subject to the following conditions:
Phone: 952.227.1120
Fax: 952.227.1110
Building:
Recreation Center
1.
Appropriate permit(s) required for the demolition or moving of any existing
2310 Coulter Boulevard
structures.
Phone: 952.227.1400
Fax: 952.227.1404
2.
A final grading plan and soils report must be submitted to the Inspections
Planning &
Division before building permits can be issued.
Natural Resources
Phone: 952.2271130
3.
Retaining walls over four feet high require a permit and must be designed by a
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professional engineer.
Public Works
4.
Each lot must be provided with separate sewer and water services.
7901 Park Place
Phone: 952.227.1300
Engineering:
Fax. 952.227.1310
Senior Center 1. The easements per Documents T15149 and T17882 must be extinguished prior to
Phone: 952.227.1125 final plat approval.
Fax: 952.227.1110
2. Prior to final plat submittal the developer shall coordinate with the gas company
Website to verify the location of the gas line. If the gas line is not within an existing
www.ci.chanhassen.mn.us easement the developer must provide and dedicate the necessary easement or
relocate the gas line to lie within an easement area in accordance to CenterPoint
Energy's specifications.
Chanhassen is a Community for Life - Providing for Today and Planning for Tomorrow
Mr. Ben Wikstrom
October 15, 2014
Page 2
3. The drainage and utility easements on the north side of Lots 1 and 3 can be reduced to 10
feet.
4. Any portion of the gravel surface on the north side of the property that is disturbed with this
development shall be paved.
5. It is the developer's responsibility to coordinate access to the gravel surface with the affected
residents during construction.
6. The proposed retaining wall shall comply with the following:
a) A building permit is required,
b) The design shall comply with the Minnesota Department of Transportation standards for
retaining walls,
c) The drainage design for the wall shall consider the surface runoff that will sheet drain
towards the wall,
d) The wall crosses over property lines and therefore it shall be built in conjunction with the
subdivision and a homeowners association must be formed to own and maintain the wall,
e) An encroachment agreement will be required before the retaining wall building permit is
issued if the retaining wall is to be installed within the platted drainage and utility
easement.
f) The developer shall ensure that the wall construction does not compromise the private
sanitary sewer service or the gas line in the area.
g) The developer shall install a barrier (fence, berm, landscaping or other barrier) between
the private gravel street and the top of the retaining wall.
7. All driveways within the development shall meet the 10% maximum driveway slope. The
developer is encouraged to consider a driveway design that many homeowners desire which
includes a landing (typically 3 %) at each end of the driveway (at the street and at the garage).
8. Sewer and water services to each of the proposed four lots were installed by the Curry Farms
2 °a Addition developer; therefore, the sewer and water lateral fees do not apply.
9. Prior to final plat approval the developer shall identify which of the four lots will receive the
City SAC and City WAC credit.
10. The remaining three lots shall be subject to the City SAC and WAC, 30% of which will be
collected with the final plat at the rate in effect at the time of final plat approval.
11. All lots are subject to the Metropolitan Council Environmental Services Sanitary Access
Charge (MCES SAC), which is paid with the building permit.
12. A portion of the private sanitary sewer service to the home located on 6281 Teton Lane will
encroach into the platted drainage and utility easement; therefore, an encroachment
agreement is required.
Mr. Ben Wikstrom
October 15, 2014
Page 3
Natural Resources:
1. Tree protection fencing will be required at the edge of grading limits near any preserved
trees. It shall be installed prior to grading.
2. Trees required to be planted are as follows: Lot 1 — 5 trees, Lot 2 — 2 trees, Lot 3 — 4 trees,
Lot 4 — 7 trees.
Planning:
1. The developer shall perform a phase I environmental audit on the property surrounding the
commercial building prior to recording the final plat.
2. The existing buildings on the property, including sheds, house and the long building must be
demolished prior to recording of the final plat.
3. A ten -foot building setback from the access easement (Doc. No. 14111 and 14055) is
required.
4. The developer shall work with the neighboring property owners to clarify the use, permitted
users and maintenance responsibility of the easement. Specifically, the easement must assure
that the property owner for Lot 2 may access the rear of their property via this easement. The
developer shall ensure that the necessary easement is in place so that the future property
owner of Lot 2 can access the northern tip of the property. A revised easement document
shall be recorded with the plat.
Water Resources:
1. The applicant shall either procure a drainage and utility easement over the entirety of the
culvert or they shall install a catch basin manhole in Bretton Way just west of the driveway
for Lot 4 and tie this into the existing public storm sewer system. In either event, the
applicant shall model the conveyance choice to assure adequate capacity and provide a safe
and stable emergency overflow.
2. The applicant must provide clarification to resolve the disparate impervious surface
calculations and assure adequate volume reduction.
3. The applicant shall provide infiltration/water quality volume adequate to address the volume
reduction requirements for the runoff from all impervious surfaces in the development.
4. The applicant must provide a detail of the rain gardens which is consistent with the
recommendations and requirements of the Minnesota Stormwater Manual before final plat
approval.
5. The applicant shall provide a detailed planting schedule for the rain garden areas.
6. The applicant shall provide a hydrograph showing the duration of ponding is less than 48
hours and shall reduce the ponding depth so the bounce does not exceed MN Storm Water
Manual guidance or correct the soils and demonstrate that they are commensurate with HSG
A or B soils.
Mr. Ben Wikstrom
October 15, 2014
Page 4
7. The side slopes into the rain gardens shall not exceed three horizontal feet for every one
vertical foot.
8. Discharge velocities into the rain gardens shall not exceed four cubic feet per second or the
applicant shall provide scour calculations and adequate energy dissipation to assure erosion
will not be an issue.
9. Pre - treatment shall be provided to minimize sediment deposition into the rain gardens.
10. Drain tile services must be provided to all properties that will flow from the back to the front
of the lot.
11. Erosion Control plan /SWPPP must include all elements required under Chapter 19 of City
Code.
12. Engineer estimate of quantities for erosion control and sediment prevention, including those
necessary for final site stabilization, shall be provided and used to calculate escrow amount.
13. A Storm Water Management Utility fee estimated to be $9,168.00 shall be paid with final
plat.
Final plat documents must be submitted to the City 35 days prior to the City Council meeting in
which you wish to have your final plat approved. Conditions of the preliminary plat must be
addressed for final plat approval. Final Plat approval must be requested within one year of
preliminary plat approval. Enclosed is the list of items required for submittal for final plat
approval.
Should you have any questions, please contact me at (952) 227 -1131 or by email at
bgenerous&ci.chanhassen.mn.us.
Since
Robert Generous, AICP
Senior Planner
Enclosure
c: Naomi Carlson
ec: Kate Aanenson, Community Development Director
Alyson Fauske, Assistant City Engineer
Todd Gerhardt, City Manager
Terry Jeffery, Water Resources Coordinator
Jerry Mohn, Building Official
Marty Campion
g: \plan\2014 planning cases\2014 -08 fretham 19th addition\approval letter prelim plat and variance.doc
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:
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).
5. 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
Five (5) sets (folded) of final plat, one (1) set of reductions (81/2" 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.
Updated 11 -29 -06
gAeng \forms \final plat submittal.doc