Approval Letter 7-2-07
CITY OF
CHANHASSEN
7700 Market Boulevard
PO Box 147
Chanhassen, MN 55317
Administration
Phone: 952.227.1100
Fax: 952.227.1110
Building Inspections
Phone: 952.227.1180
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: 952.227.1110
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
1591 Park Road
Phone: 952.227.1300
Fax: 952.227.1310
Senior Center
Phone: 952.227.1125
Fax: 952.227.1110
Web Site
www.ci.chanhassen.mn.us
June 28, 2007
Mr. Paul Eidsness
4395 Trillium Lane West
Minnetrista, MN 55364
Re: Lotus Woods - Planning Case 07-09
Dear Mr. Eidsness,
This letter is to formally notify you that on June 11,2007, the City Council adopted
the following motion:
"The City Council approves the preliminary plat for Planning Case 07-09 for Lotus
Woods Subdivision for 11 lots and 1 outlot with a variance to allow a 50-foot right-
of-way as shown on the plans dated received May 4, 2007, prepared by Otto
Associates, subject to the following conditions:
1. A wetland buffer 25 feet in width shall be maintained around all Manage 1
wetlands. All wetlands and wetland buffer areas shall be protected by silt fence
during grading. Wetland buffer areas shall be preserved, surveyed and staked in
accordance with the City's wetland ordinance. The applicant shall install
wetland buffer edge signs, under the direction of City staff, before construction
begins and shall pay the City $20 per sign. Principal structures shall maintain a
setback of at least 30 feet from the wetland buffer edge; accessory structures
shall maintain a setback of at least 15 feet from the wetland buffer edge. The
wetland buffer and wetland buffer setback shall be shown on the plans.
2. The SWPPP shall be revised to address all items that are unchecked in the
Carver SWCD "Stormwater Pollution Prevention Plan Checklist" attached to
the April 11, 2007 letter to the City from the Carver SWCD.
3. Stable emergency overflows shall be provided for the proposed pond on site.
The emergency overflows shall be clearly labeled on the plan and a detail
shall be provided.
4. All riprap/fabric at the flared end section shall be installed within 24 hours of
flared end section installation.
5. The ditch section west of Carver Beach Road that receives stormwater from
the stormwater pond shall be stable prior to receiving discharge from the site.
6. Erosion control blanket shall be installed on all slopes greater than or equal to
3: 1. All exposed soil areas shall have temporary erosion protection or
permanent cover year round, according to the following table of slopes and
time frames:
The City of Chanhassen · A growing community with clean lakes, quality schools, a charming downtown, thriving businesses, winding trails, and beautiful parks. A great place to live, work, and play.
Mr. Paul Eidsness
Lotus Woods - Planning Case 07 -09
July 2,2007
Page 2 of 5
Type of Slope
Steeper than 3: 1
10:1 to 3:1
Flatter than 10: 1
Time
7 days
14 days
21 days
(Maximum time an area can
remain open when the area
is not actively being worked.)
These areas include constructed storm water management pond side slopes, and any exposed
soil areas with a positive slope to a storm water conveyance system, such as a curb and gutter
system, storm sewer inlet, temporary or permanent drainage ditch or other natural or man
made systems that discharge to a surface water.
7. Manholes with two-foot sumps shall be installed as the last road-accessible structures prior to
discharge into the stormwater pond.
8. Chanhassen Type 2, Heavy Duty silt fence shall be installed around all wetlands, streams,
creeks, bluffs and ravines; Chanhassen Type 1 silt fence shall be used around the remaining
areas.
10. A temporary sediment basin shall be constructed prior to disturbing upslope areas. The areas
of temporary sediment basins shall be labeled on the plan. A temporary outlet structure (e.g.,
a perforated riser and rock cone) shall be provided for the pond; a detail shall be provided.
11. Inlet controls are needed for all inlets throughout the project and shall be installed within 24
hours of inlet installation prior to casting. Filter fabric held down by steel plates with 12
inches of %-inch rock over each cover may be used. Once casting of inlets takes place, inlet
controls shall be installed within 24 hours. Inlet protection shall be maintained on a regular
basis. For all inlet protection devices, details shall be provided in the plan and in the
SWPPP.
12. Street cleaning of soil tracked onto public streets shall include daily street scraping and street
sweeping as needed.
13. At this time, the estimated total SWMP fee, due payable to the City at the time of final plat
recording, is $31,996.00.
14. The applicant shall apply for and obtain permits from the appropriate regulatory agencies
(i.e., Riley-Purgatory-Bluff Creek Watershed District, Minnesota Pollution Control Agency)
and comply with their conditions of approval.
15. Applicant shall submit a landscaping plan showing 72 trees as replacement plantings. All
trees shall be native species. Plan shall specify size, species, and locations.
16. All areas outside of grading limits shall be protected by tree preservation fencing. Fencing
shall be installed prior to grading and excavation for homes on each lot. Any trees shown as
preserved on plans dated revised on 5/1/2007 must be replaced at a rate of 2: 1 diameter
inches if removed.
Mr. Paul Eidsness
Lotus Woods - Planning Case 07-09
July 2,2007
Page 3 of 5
17. No grading shall be allowed on Outlot A.
18. A minimum of two overstory trees shall be planted in the front yards of Lots 1-8, Block 1
19. All structures within the proposed right-of-way or within the required setback of Block 2
must be removed.
20. Building Official Conditions:
a. A final grading plan and soils report must be submitted to the Inspections Division before
building permits will be issued.
b. Demolition permits must be obtained prior to demolishing any structures on the site.
c. Retaining walls more than four feet high must be designed by a professional engineer and
a building permit must be obtained prior to construction.
d. Separate sewer and water services must be provided to each lot.
e. Any existing wells and on-site sewage treatment systems on the site must be abandoned
in accordance with State Law and City Code.
21. Fire Marshal conditions:
a. A lO-foot clear space must be maintained around fire hydrants, i.e., street lamps, trees,
shrubs, bushes, Xcel Energy, Qwest, cable TV and transformer boxes. This is to ensure
that fire hydrants can be quickly located and safely operated by firefighters.
b. Fire apparatus access roads and water supply for fire protection is required to be
installed. Such protection shall be installed and made serviceable prior to and during the
time of construction except when approved alternate methods of protection are provided.
c. No burning permits shall be issued for trees to be removed. Trees and shrubs must either
be removed from site or chipped.
d. Fire apparatus access roads shall be designed and maintained to support the imposed load
of fire apparatus and shall be serviced so as to provide all-weather driving capabilities.
Pursuant to Minnesota State Fire Code Section 503.2.3.
e. Fire hydrant locations are acceptable.
f. Proposed street name is acceptable.
g. Temporary street signs shall be installed at street intersections once construction of the
new roadway allows passage of vehicles. Pursuant to 2002 Minnesota Fire Code Section
501.4.
22. Outlot A shall be deeded to the City in lieu of payment of park dedication fees.
23. Revise Sheet 2 of 12 to show "House Type.g e" on Lots 5 and 6, Block 1.
24. The two accessory structures along Lotus Woods Drive must be removed before grading
commences. A plan is needed to allow all the existing homeowners access to their properties
until the completion of construction. The existing driveways west of Lotus Woods Drive
will need to be removed upon completion of Lotus Woods Drive.
Mr. Paul Eidsness
Lotus Woods - Planning Case 07-09
July 2,2007
Page 4 of 5
25. Rational method calculations and delineation are needed for the sizing of the storm sewer.
Also, add the ordinary high water level of the wetland to the plans.
26. The outlet pipe to the on-site pond must be directionally drilled under Big Woods Boulevard
and discharge into the ditch in Triple Crown Estates.
27. A revised grading plan will be needed to address the following issues:
a. The lowest openings of houses must be three feet above the ordinary high water level or
one foot above the emergency overflow.
b. Lots 2 and 4, Block 1 elevations need to be revised if they are indeed walkouts.
c. The slopes of the driveways on Lots 6 and 8, Block 1 appear to be more than the 10%
maximum and need to be revised.
d. Spot elevations must be shown at each proposed intersection to ensure the curb line has a
.5% minimum slope.
e. Ground (i.e. non-paved) surface grades shall not be less than 2%. All emergency
overflows must be shown on the plan. More contour labels are needed. Also, please turn
off the tree layer so it is easier to read the grading plan.
28. An easement is required from the appropriate property owner for any off-site grading. A
temporary construction easement will be needed for the installation of the manhole on Lot 1
of Big Woods on Lotus Lake. If importing or exporting material for development of the site
is necessary, the applicant will be required to supply the City with detailed haul routes.
29. The existing retaining wall in the southwest comer of the site must be removed before or
during construction of the pond. A building permit is required for all retaining walls four
feet tall or higher and must be designed by a Structural Engineer registered in the State of
Minnesota.
30. The watermain extension from Fox Hill Drive must be wet tapped. Due to the alignment of
the watermain in Fox Hill Drive, it appears that this connection cannot be done under traffic.
The watermain connection on Big Woods Boulevard shall connect to the provided stub and
take place under traffic. The sanitary sewer connection on Big Woods Boulevard connecting
to an existing stub shall be completed under traffic.
31. Actual elevations of existing utilities must be verified for accuracy. Proposed service
connections along with connection details must be added to the plans.
32. Each new lot is subject to the sanitary sewer and water hookup charges. The 2007 trunk
hookup charge is $1,669 for sanitary sewer and $4,485 for watermain. Sanitary sewer and
watermain hookup fees may be specially assessed against the parcel at the time of building
permit issuance. All of these charges are based on the number of SAC units assigned by the
Met Council and are due at the time of building permit issuance.
33. All of the utility improvements are required to be constructed in accordance with the City's
latest edition of Standard Specifications and Detail Plates. The applicant is also required to
Mr. Paul Eidsness
Lotus Woods - Planning Case 07-09
July 2,2007
Page 5 of 5
enter into a development contract with the City and supply the necessary financial security in
the form of a letter of credit or cash escrow to guarantee installation of the improvements and
the conditions of final plat approval. The applicant must be aware that all public utility
improvements will require a preconstruction meeting before building permit issuance.
Permits from the appropriate regulatory agencies will be required, including the MPCA,
Dept. of Health, Carver County, and the Watershed District.
34. The sanitary sewer easement will need to be changed from 20 feet to 30 feet to ensure proper
access for maintenance of this line. The actual location of the watermain and the easement
must be shown to determine if the easement is sufficient.
35. The site distance for turning onto Fox Hill Drive must be verified. Upon project completion,
the applicant shall submit a set of "as-built" plans signed by a professional civil engineer.
36. Sheets 2 through 12 shall be revised to reflect the adjusted property lines.
37. The applicant shall work with staff to realign the street connection to Fox Hill."
You must submit final plat documents at least four weeks before the City Council meeting in
which you wish to be heard for final plat approval. Enclosed is a checklist of items needed for
final plat consideration.
If you have any questions, please feel free to contact me at 952.227.1134 or e-mail at
sal i aff@ci.chanhassen.mn.us.
Sincerely,
~i
Sharmeen AI-Jaff
Senior Planner
Enclosure
c: Jon Lang, 640 Carver Beach Road
Constance Cerilla, 650 Carver Beach Road
Robert Amick, 561 Fox Hill Drive, Chanhassen
Paul Otto, Otto Associates
ec: Joe Shamla, Project Engineer
Jerry Mohn, Building Official
g:\plan\2007 planning cases\07 -09 lotus woods\aprovalleller prelim. plat.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:
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).
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 (8WI 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\forms\final plat submittal.doc