Approval Letter 1-23-07
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
wII'w.ci.chanhassen.mn. us
January 23, 2007
Mr. Bruce Carlson
Carlson Custom Homes, Inc.
1440 Bavarian Shores Dr
Chaska, MN 55318
Re: The Arbors, Preliminary Plat Approval
Planning Case #07-02
Dear Mr. Carlson:
This letter is to confirm that on January 22, 2007, the Chanhassen City Council approved
the following:
A. Comprehensive Land Use Map Amendment from Residential-Large Lot to
Residential-Low Density for Lots 1 through 3, Block 3, of the preliminary plat of The
Arbors contingent on Metropolitan Council review.
B. The Rezoning from RR, Rural Residential, to RSF, Single Family Residential for the
land within the plat of The Arbors subject to final plat approval for The Arbors.
c. The preliminary plat for the Arbors creating 22 lots, 3 outlots and public right-of-
way, plans prepared by Otto Associates, dated October 31,2006, subject to the
following conditions:
1. The house designs, locations and driveway configurations for Lots 1 and 2,
Block 1, must be revised to maintain the required wetland setback.
2. Full park fees in lieu of parkland dedication and/or trail construction shall be
collected as a condition of approval for The Arbors. The park fees shall be
collected in full at the rate in force upon final plat submission and approval.
3. Fire Marshal's 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. Pursuant to Chanhassen City
Ordinance #9-1.
The City of Chanhassen · A growing community with clean lakes, quality schools, a Charming downtown, thriving businesses, winding trails, and beautiful parks. A grnat place to live, work, and play.
Mr. Bruce Carlson
January 23, 2007
Page 2
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. 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.
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. Submit proposed cul-de-sac name to Chanhassen Building Official and Chanhassen Fire
Marshal for review and approval.
f. No burning permits shall be issued for trees to be removed. Trees and shrubs must either
be removed from site or chipped.
4. 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. Existing wells and on-site sewage treatment systems on the site must be abandoned in
accordance with State Law and City Code.
d. The developer must submit a list of proposed street names for review and approval prior
to final plat of the property.
e. Retaining walls more than four feet high must be designed by a professional engineer and
a building permit must be obtained prior to construction.
f. Separate sewer and water services must be provided each lot.
5. City Forester's Conditions:
a. Tree preservation fence shall be installed at the edge of the grading limits prior to any
construction. Fencing shall be in place and maintained until all construction is
completed.
b. Any trees removed in excess of proposed tree preservation plans, dated 10/31/06, will be
replaced at a ratio of 2: 1 diameter inches.
c. A minimum of two trees shall be planted on each lot.
Mr. Bruce Carlson
January 23, 2007
Page 3
d. Tree conservation easements on Lots 5, 8, and 9, Block 1 shall be enlarged beyond what
is shown on plans dated 10/31/06.
e. Tree conservation easements shall be located on Lots 1-3,5,8-9, Block 1.
f. The applicant shall replace Colorado spruce shown on landscape plan with concolor fir or
Norway spruce.
6. City Engineer's Conditions:
a. In order to meet the 10% maximum allowable driveway grade on Lots 1 through 3, Block
1, the builder may have to put steps in the garage to accommodate the grade change.
b. The dead pool volume of the pond needs to be increased by 360 cubic feet to meet the
MPCA Phase II requirements.
c. The proposed 1036 foot contour on Lots 12 and 14, Block 1 must be shifted so that the
backyard grade is minimum 2%.
d. The proposed major contours must be a different line weight or type.
e. Based on the grading plan, the home on Lot 5, Block 1 will be a walkout, not a full
basement.
f. The top and bottom of wall elevations of the wall must be shown on the grading plan.
g. Final plat approval shall be contingent upon the approval and construction of Project 06-
06.
h. Watermain must be minimum 18 inches above or below the sanitary sewer.
1. Access for Lots 2 and 3, Block 3 will be addressed and constructed when those lots are
final platted.
J. An encroachment agreement is required for the gravel drive and turnaround within the
Dogwood Road right of way south of West 78th Street.
7. Water Resources Coordinator's Conditions:
a. The applicant shall classify Wetland 2 using the results from the Minnesota Routine
Assessment Method for Evaluating Wetland Functions (MnRAM Version 3.0). An
electronic version of the completed MnRAM evaluation shall be submitted to and
approved by the city to establish the classification of Wetland 2 so the appropriate
wetland buffer and setback requirements can be determined.
b. A wetland buffer 50 in width and a 50 foot setback from the wetland buffer must be
maintained around Wetland 1. Wetland buffer areas shall be preserved, surveyed and
Mr. Bruce Carlson
January 23, 2007
Page 4
staked in accordance with the City's wetland ordinance. The applicant must install
wetland buffer edge signs, under the direction of City staff, before construction begins
and must pay the City $20 per sign. Wetland buffer and setback requirements for
Wetland 2 are contingent upon review and approval of the MnRAM for that wetland.
c. The proposed driveways and structures on Lots 1 and 2, Block 1 appear to be within the
wetland setback for Wetland 2. The applicant shall submit house plans that will meet the
required setbacks on Lots 1 and 2, Block 1.
d. The proposed conservation easement shall be revised to envelop Wetland 2 and the
required wetland buffer.
e. A NPDES Phase II Construction Site Storm Water Permit will be required from the
Minnesota Pollution Control Agency (MPCA) for this site. A Storm Water Pollution
Prevention Plan (SWPPP) will be required in conjunction with this application. The
SWPPP shall be provided to the City so it can be reviewed by the Carver Soil and Water
Conservation District prior to the preconstruction meeting for the project.
f. The proposed storm water pond shall be constructed prior to disturbing upgradient areas
and used as a temporary sediment basin during mass grading. Diversion berms/ditches
may be needed to divert water to the pond and a temporary pond outlet shall be provided.
The outlet could be a temporary perforated standpipe and rock cone. The plans shall be
revised to include a detail for the temporary pond outlet.
g. It shall be noted on the SWPPP that all areas that will not be permanently stabilized
within the timeframe required by the NPDES permit shall be temporary mulched and
seeded. A note shall be included in the dewatering section of the SWPPP that states: "If
construction of the proposed temporary/permanent sediment pond is not completed prior
to dewatering, the City's on-site construction observer must approve proposed
dewatering methods prior to beginning dewatering."
h. The plans shall be revised to incorporate Chanhassen's standard details for erosion and
sediment control, including 5302A and 5302D. Proposed erosion and sediment controls
for individual lots shall include perimeter controls (silt fence), rock driveways, street
sweeping, inlet control and temporary mulch after final grade and prior to issuing the
Certificate of Occupancy.
1. The applicant shall provide erosion and sediment control along the south and east
property lines to prevent discharge of sediment onto adjacent properties.
J. All silt fence that is not laid parallel to the contours shall have J Hooks installed every 50
-75 feet. This shall be noted on the plans and discussed at the preconstruction meeting.
k. Energy dissipation shall be provided at the inlet to the proposed pond and at the end of
the discharge pipe that outlets to the wetland within 24 hours of pipe installation. The
discharge location for the outlet of the proposed pond shall be evaluated to ensure that
Mr. Bruce Carlson
January 23, 2007
Page 5
the proposed discharge will not cause erosion issues. Reinforced erosion control matting
may be required.
l. A stable emergency overflow (EOF) for the stormwater pond shall be provided. The
EOF could consist of riprap and geotextile fabric or a turf reinforcement mat (a
permanent erosion control blanket). A typical detail shall be included in the plan. The
overland route from the EOF to Lake Minnewashta shall be shown on the plans and shall
be encumbered by a drainage and utility easement.
m. 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:
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.)
n. 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.
o. Inlet protection may be needed prior to installation of the castings for the curbside catch
basins. In that case, all storm sewer inlets shall be protected by at least fabric draped
over the manhole with a steel plate holding the fabric in place.
p. The plans shall be revised to show a rock construction entrance (minimum 75 feet in
length) wherever construction traffic will access the site. The rock construction entrance
shall be constructed in accordance with Chanhassen's Standard Detail 5301. Street
cleaning of soil tracked onto public streets shall include daily street scraping and street
sweeping as needed.
q. At this time, the estimated total SWMP fee, due payable to the City at the time of final
plat recording, is $74,570.50.
r. The applicant shall apply for and obtain permits from the appropriate regulatory agencies
(e.g., Minnesota Pollution Control Agency, Minnesota Department of Natural Resources
(for dewatering)) and comply with their conditions of approval.
8. The developer shall provide in both their sales material and within the association covenants
full disclosure about the Minnesota Landscape Arboretum location, use of electric fence,
research operations, and agricultural operations including the spraying of trees.
9. The developer shall install signage on Lots 4 and 5, Block 2, and Outlots Band C warning of
the electrical fence on the Minnesota Landscape Arboretum property.
Mr. Bruce Carlson
January 23, 2007
Page 6
10. The Dogwood Road roadway width shall be determined with the Final Plat.
Please note that the Land Use Amendment must be submitted to the Metropolitan Council for
their review. The City will not be able to act on the final plat until we have the Metropolitan
Council sign off on the amendment.
Final plat documents must be submitted to the City 30 days prior to the City Council meeting in
which you wish to have your final plat approved. Conditions of the preliminary plat approval
must be addressed for final plat approval. Enclosed is the list of items required for submittal for
final plat approval.
Should you have any questions, please feel free to contact me at (952) 227-1131 or
bgenerous@ci.chanhassen.mn.us.
Robert Generous, AICP
Senior Planner
Enclosure
c: Peter and Dee Brandt
ec: Alyson Fauske, Assistant City Engineer
Jerry Mohn, Acting Building Official
g:\plan\2007 planning cases\07 -02 the arbors\approvalletter preliminary 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 (8W' 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