PC SUM 2011 06 21
CHANHASSEN PLANNING COMMISSION
REGULAR MEETING
SUMMARY MINUTES
JUNE 21, 2011
Chairman Aller called the meeting to order at 7:00 p.m.
MEMBERS PRESENT:
Andrew Aller, Kathleen Thomas, Tom Doll, Mark Undestad, Kevin
Ellsworth, Kim Tennyson and Lisa Hokkanen
STAFF PRESENT:
Bob Generous, Senior Planner; and Paul Oehme, City Engineer/Public
Works Director
PUBLIC HEARING:
REQUEST FOR SITE PLAN REVIEW FOR CONSTRUCTION OF A WATER TOWER
ON PROPERTY ZONED OFFICE INSTITUTIONAL (OI) LOCATED AT
MINNETONKA MIDDLE SCHOOL WEST (6421 HAZELTINE BOULEVARD).
APPLICANT: CITY OF CHANHASSEN, PLANNING CASE 2011-05.
Bob Generous presented the staff report on this item. Chairman Aller asked staff to explain the
need for more fire protection in this area, ponding, and hard surface coverage requirements.
Commissioner Ellsworth asked for clarification of the MnDOT drainage permits. Commissioner
Doll asked staff about addressing the SWPPP questions. Chairman Aller opened the public
hearing. Dennis Clark, 6651 Hazeltine explained how the construction of the water tower would
impact his property, noting his position today is objecting to the tower. Chairman Aller closed
the public hearing. After comments the following motion was made.
Ellsworth moved, Thomas seconded that the Chanhassen Planning Commission
recommends that the City Council approve the Site Plan for a water tower located at
Minnetonka Middle School West, plans prepared by SEH dated February 22, 2011, subject
to the following conditions and adoption of the Findings of Fact and Recommendation:
1.The pedestal shall be painted sky blue if a steel shell, or if constructed of a composite
concrete material shall be stamped with architectural patterns to mimic block or brick.
2.The light fixture shall have a 90-degree cut-off angle and be shielded from off-site view.
3.Haul routes must be established for the trucking of material off the site.
4.A building permit is required for the retaining walls since they will be at least four feet high.
5.The retaining walls must be designed by an engineer registered in the State of Minnesota.
6.The following additional information must be shown on the grading plan:
Planning Commission Summary - June 21, 2011
a)Show the top and bottom of wall elevations.
b)Provide more spot elevations along the driveway and the area to the north of the
driveway, ensuring that minimum 1% grade is achieved on paved surfaces and minimum
2% grade is achieved in the green area.
7.A plumbing permit is required for the proposed sewer relocations.
8.Contact the Utility Department at 952-227-1300 a minimum of 48 hours before tapping into
the existing watermain.
9.MnDOT permits are required for the proposed watermain and storm water pond outlet pipe.
10.Tree protection fencing shall be installed at the edge of the grading limits.
11.A building permit is required.
12.Geotechnical investigation and report required.
13.All plans must be prepared and signed by design professionals licensed in the State of
Minnesota.
14.Portions of retaining wall(s) exceeding four feet in height must be professionally designed.
15.The owner and or their representative shall meet with the Inspections Division to discuss plan
review and permit procedures.
16.If the total disturbance exceeds one (1) acre in area an NPDES General Stormwater Permit
for Construction Activities will be needed from the MPCA.
17.If an NPDES Permit is needed, a Storm Water Pollution Prevention Plan will need to be
prepared and submitted for review and the conditions of the permit must be met.
18.The outlet to the right-of-way for MN Trunk Highway 41 will need to be stabilized
immediately upon connection.
19.The pond must be protected from sedimentation to the greatest extent practicable during
construction and all sediment deposited during construction must be removed to return the
pond to the design conditions. A record drawing shall be prepared showing this condition to
be met.
20.The plan must address the comments from the Carver County SWCD.
21.The proposed conditions will result in a decrease in runoff rate for the 2, 10 and 100-year
events and an increase in total phosphorus and suspended solids removal.
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Planning Commission Summary - June 21, 2011
22.The underdrain bedding material shall be washed river rock wrapped in a high-flow filter
fabric.
23.According to the Carver County Soil Survey and double ring infiltrometer tests performed by
the School District, this site may well be conducive to infiltration. To this end an additional
hold down should be constructed below the underdrain such that the feature is a
filtration/partial recharge feature as described in the Minnesota Stormwater Manual.
24.Eliminate CBMH 109 and bulkhead the outlet from the upstream structure to the west. Move
CBMH 107 to the east into the location of the existing manhole. Replace this structure as
needed and outlet to the pond. The end result will be a single outlet point into the first cell
near the pinch point of the 1035-foot contour.
All voted in favor and the motion carried unanimously with a vote of 7 to 0.
APPROVAL OF MINUTES:Ellsworth moved, Hokkanen seconded to note the verbatim
and summary minutes of the Planning Commission meeting dated June 7, 2011 as
presented. All voted in favor and the motion carried unanimously with a vote of 7 to 0.
COMMISSION PRESENTATIONS:
None.
CITY COUNCIL ACTION UPDATE.
None.
Thomas moved, Doll seconded to adjourn the meeting. All voted in favor and the motion
carried unanimously with a vote of 7 to 0. The Planning Commission meeting was
adjourned at 7:25 p.m.
Submitted by Kate Aanenson
Community Development Director
Prepared by Nann Opheim
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