Approval Letter 04-22-2014cl'fY of
CHANHAS3EN
7700 Market Boulevard
PC Box 147
Chanhassen, MN 55317
Administration
Phone: 952.227.1100
Fax: 952.227.1110
Building Inspections
Phone: 952.2271180
Fax 952.227.1190
Engineering
Phone: 952.227.1160
Fax: 952.227.1170
Finance
Phone: 952.227.1140
Fax: 952.227.1110
Park & Recreation
Phone: 952.227.1120
Fax: 952.2271110
Recreation Center
2310 Coulter Boulevard
Phone: 952.227.1400
Fax: 952.227.1404
Planning &
Natural Resources
Phone: 952.227.1130
Fax: 952.227.1110
Public Works
7901 Park Place
Phone: 952.227.1300
Fax: 952.227.1310
Senior Center
Phone: 952.227.1125
Fax: 952.227.1110
Web Site
www.ci.chanhassen.nnn.us
April 22, 2014
Mr. Joe Jablonski and Mr. Paul Tabone
Lennar Corporation
16305 36`h Street, Suite 600
Plymouth, MN 55446
Re: Boulder Cove Subdivision — Planning Case 2014 -09
Gentlemen:
This letter is to formally notify you that on April 14, 2014, the Chanhassen City
Council adopted the following motion:
"The City Council approves the Preliminary Plat for Planning Case #2014 -09 for
Boulder Cove for 31 lots and 3 outlots with a Variance to allow a 1,200 -foot long cul -de-
sac as shown on the plans received March 4, 2014, subject to the following conditions
and adoption of the attached Findings of Fact:
1. Park and Recreation Conditions:
a. Full park fees in lieu of additional parkland dedication and/or trail construction
shall be collected as a condition of approval for Boulder Cove. The park fees
will be collected in full at the rate in force upon final plat submission and
approval. Based upon the current proposed lot count of 31 homes and the city's
2014 single - family park fee of $5,800 per unit, the total park fees for Boulder
Cove would be $179,800.
2. Environmental Resources Conditions:
a. Tree preservation fence shall be installed at the edge of the drip line for tree
#71. A layer of woodchips shall be installed over the root zone to a depth of
3 -4 inches. All other tree preservation fencing shall be installed at the edge of
the grading limits prior to any construction.
b. No trees shall be planted within the public right -of -way. Front yard trees shall
be located inside the setback area.
c. Additional tree species shall be added to the plant schedule in order to reduce
the percentage attributed to spruce so that no more than one -third of the trees
are from any one species. Additional trees may not be from the maple family
and must be overstory species. Minimum total number of trees to be planted
is 166.
d. There are overhead power lines along Highway 7. Only ornamental trees
shall be allowed to be planted in the bufferyard between the property line and
the proposed fence.
e. Evergreens shall average seven feet in height when planted.
f. Any tree removal outside the parameters of the subject property shall require
approval of the property owner where the tree is located.
Chanhassen is a Community for Life - Providing for Today and Planning for Tomorrow
Mr. Joe Jablonski and Mr. Paul Tabone
Boulder Cove — Planning Case 2014 -09
April 22, 2014
Page 2 of 5
g. Applicant shall correct the tree inventory for the following trees:
• Tree #38, sugar maple: shown on the plan as saved, shown in the inventory as
removed. The applicant shall resolve the discrepancy.
• Tree #72, spruce: shown on plan and inventory as saved. Tree is noted to be in poor
condition. Tree shall be noted as REMOVE.
• Tree #96, red oak: shown on plan at the very edge of the grading limits. Tree
appears to be in a position for a possible save. It is in fair condition. Staff
recommends that applicant work with staff to preserve tree if appropriate.
• Tree #205, #206, ash: shown on plans as saved. These trees are within the grading
limits and have proposed grading shown on top of their locations. Trees shall be
noted as REMOVE.
3. Building Department conditions:
a. Final grading plans and soil reports must be submitted to the Inspections Division before
building permits will be issued.
b. Engineered design and building permits are required for retaining walls exceeding four
feet in height.
c. Each lot must be provided with a separate sewer and water service.
d. Demolition permits must be obtained before demolishing any structures.
e. Proper removal, abandonment or sealing of storage tanks, on -site septic systems, wells,
etc. required. Permits required, as applicable.
f. If applicable, existing home(s) affected by new street will require address changes.
4. Fire Marshal conditions:
a. Three feet of clear space must be maintained around fire hydrants.
b. Fire hydrants must be made serviceable prior to combustible construction.
c. Temporary street signs shall be installed prior to and during construction.
d. Fire apparatus access roads capable of supporting the weight of fire apparatus shall be
made serviceable prior to combustible construction.
e. No burning permits will be issued for the removal of brush, trees.
Mr. Joe Jablonski and Mr. Paul Tabone
April 22, 2014
Page 3 of 5
5. Planning Department Conditions:
a. Any plans showing or describing "Next Generation' ' homes should not be included
because they are not permitted under current city ordinances.
b. A high- tension power line exists along Highway 7. Any work or landscaping must be
approved by Xcel Energy.
6. Engineering Department Conditions:
a. The developer must work with the City of Chanhassen and the City of Shorewood to
revise the plans to incorporate a "T" intersection at 62 "a Street, Strawberry Lane, and
Strawberry Court.
b. The developer shall provide an analysis to determine if the "T" intersection would
warrant a stop condition.
c. If a stop condition is warranted, the developer shall have a traffic engineer collect and
analyze traffic counts on 62nd Street to determine the queuing effects at the intersection.
d. Other details such as transitioning from a 31 -foot wide street in Chanhassen to a 22 -foot
wide street in Shorewood shall be addressed with the final plan submittal.
e. The developer is required to obtain any necessary permits from the Metropolitan Council
(sewer connection permit) and the City of Shorewood (work in right -of -way permit) and
the street must be restored.
f. The septic tank and mound system that services 3530 Highway 7 is within the project
boundaries. These items must be removed and disposed of at an approved facility in
conjunction with the site improvements as proposed.
g. Based on the proposed preliminary plan the developer must provide a sanitary sewer
service to 3530 Highway 7. The developer shall ensure that sewer service to 3530
Highway 7 is maintained throughout construction, which will involve pumping the septic
tank after the septic mound is removed and before a sewer service is installed to serve the
property.
h. Water main for the project will be directionally bored under Highway 7 and will wet tap
into the existing 12 -inch trunk water main on the south side of Highway 7. A portion of
this water main extension lies on 3520 Highway 7; the developer must acquire the
necessary easement prior to final plat submittal. The easement must be 20 feet wide
centered on the pipe.
Water main will extend between Lot 5, Block 1 and the tot lot to the existing water main
in the southwest corner of 3751 62nd Street. The water main alignment shown on the
utility plan is not within the existing easement; therefore, the developer must acquire the
easement necessary to install this water main prior to final plat submittal. The easement
must be 20 feet wide centered on the pipe.
Mr. Joe Jablonski and Mr. Paul Tabone
April 22, 2014
Page 4 of 5
j. A water main interconnect will be required to the Shorewood water main at 62nd Street
and Strawberry Lane.
k. The developer proposes to extend 6 -inch water main to the east to provide service to
3520 and 3030 Highway 7. The developer must acquire the necessary easements to
complete this work.
1. All existing and proposed off -site drainage and utility easements must be referenced
accordingly.
m. Existing off -site easements must be referenced by document number or the plat in which
they were dedicated.
n. Public utility improvements are required to be constructed in accordance with the City's
latest edition of Standard Specifications and Detail Plates. Detailed construction plans
and specifications must be submitted at time of final plat.
7. Water Resources Coordinator Conditions:
a. Show the extent of the shoreland overlay district for Lake Minnewashta on the plan set
before final plat approval.
b. The applicant must demonstrate the extent of tree preservation for stormwater volume
reduction credit by overlaying grading limits on a current aerial photograph before final
plat approval.
c. The applicant must recalculate the volume reduction credit from new tree plantings
without the use of ornamental trees before final plat approval. The current best
information is that elevation is at least 969.5 to approximately 972.
d. The filtration feature shall be moved so that the bounce within the basin remains entirely
within the outlot before final plat approval.
e. A homeowners association shall be created and shall be responsible for the maintenance
of the filtration feature. The outlet pipe shall be the responsibility of the city.
f. An operations and maintenance manual shall be developed for the filtration feature
indicating how the HOA will maintain the feature and assure its proper function.
g. The landscape plan shall be updated to include the planting schedule for the infiltration
basin and the outlots and to provide shrubs or other buffering measures between the rear
yard lines and the filtration feature before final plat approval.
h. The pond in Outlot A shall be redesigned such that the likely seasonally high water table
is at or below the modeled normal water level.
i. Additional hydrogeological data provided and attested to by a licensed professional in
hydrogeology or similar may be used to show that the above condition is met.
Mr. Joe Jablonski and Mr. Paul Tabone
April 22, 2014
Page 5 of 5
j. All recommendations relating to subgrade improvements, preparations and drainage as
well as dewatering and drainage control from the March 3, 2014 Braun report shall be
implemented.
k. The swale behind lots 4 through 10 of Block 2 shall have a drain tile installed as part of
the site grading and utility installation. This shall be included before final plat approval.
1. Environmental manholes or 4 -foot sump manholes with SAFL baffles shall be installed at
CBMH1 and CBMH3.
m. A concerted effort shall be made to combine the outfall into the Pond in Outlet A such
that there is only one outfall. If it is not feasible from an engineering standpoint, then
documentation supporting this assertion shall be provided to city staff prior to final plat
approval.
n. A comprehensive, standalone SWPPP document with all elements required by Part III of
the NPDES construction permit shall be prepared and submitted to the City for review
and comment before final plat approval.
o. Surface Water Management connection charges are estimated to be $84,146.45. This
connection charge will be due at the time of final plat.
p. In the event that wetland characteristics are observed on the site during field visits during
the growing season, steps will need to be taken to assure compliance with the MN
Wetland Conservation Act, the Federal Clean Water Act and other applicable federal,
state and local regulations."
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
saliaffCa,ci.chanhassen.mn.us.
Sincerely, _
Sharmeen Al -Jaff
Senior Planner
Enclosure
ec: Alyson Fauske, Assistant City Engineer
Cara Otto
g: \plan\2014 planning cases\2014 -09 boulder cove\approval letter prelim plat and var.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
7. 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
g:\eng \formsAnal plat submittal.doc