Approval Letter o
CITY OF CHANIIASSEN
z„,N H ASChanhassen is a Community for Life-Providing for Today and Planning for Tomorrow
February 11, 2020
Ms. Jessica Galatz
Hennepin County Regional Rail Authority
701 4th Street South, Suite 400
Minneapolis, MN 44415
Re: Chanhassen Slope Failure Repair Project Interim Use Permit - Planning Case#2020-01
Dear Ms. Galatz:
This letter is to confirm that on February 10, 2020, the Chanhassen City Council approved the
Interim Use Permit to permit grading, excavation and slope restoration as proposed on the plans
prepared by Barr Engineering Co., dated December 13, 2019, subject to the following conditions
of approval:
1. The interim use permit shall be approved for a period of two (2) years from the date of City
Council approval. The applicant will need to request a formal extension 60 days prior to the
expiration date of the interim use permit.
2. Permits from the appropriate regulatory agency must be obtained; including but not limited
to the Minnesota Pollution Control Agency, Lower Minnesota River Watershed District and
Carver County.
3. The applicant must provide the city with a cash escrow or letter of credit in the amount of
110% of the construction costs for the appropriate phase of the grading operations to
guarantee erosion control measures, site restoration, and compliance with the interim use
permit.
4. Documentation and/or load tickets from the approved waste disposal facility where
contaminated soils will be disposed of shall be provided to the city.
5. All required ROW permits, access agreements, and temporary construction easements shall
be secured prior to the commencement of any construction activities.
6. All oversize/overweight loads leaving the site to the east must apply for County
Transportation Over Size/Over Weight (OS/OW) trip permits.
PH 952.227.1100 • www.ci.chanhassen.mn.us • FX 952.227.1110
7700 MARKET BOULEVARD • PO BOX 147 •CHANHASSEN • MINNESOTA 55317
Ms. Jessica Galatz
February 11, 2020
Page 2
7. Permitted hours of operation will be 7:00 a.m. to 6:00 p.m., Monday through Friday, and
9:00 a.m. to 5:00 p.m. on Saturday with no work permitted on Sunday or legal holidays.
8. If any excess material is hauled to another site in Chanhassen, a separate grading permit will
be required for the other property.
9. The applicant shall schedule a walk-through of the site with city staff to review boundary
staking and removals of edge trees prior to any activity commencing.
10. The applicant shall identify conservation easement boundary on site. Vegetation within the
easement may not be irrevocably damaged by construction activities. If irrevocable damage
is caused, the applicant shall be responsible for replacement plantings at a rate of 2:1
diameter inches.
11. Applicant shall report tree removal quantities to the city.
12. Upon completion of the installation of initial erosion control measures, the contractor shall
contact the city's Engineering Department (Ryan Pinkalla, 952-227-1173) for an initial
erosion control inspection prior to grading operations.
13. HDPE pipe installed shall be furnished with tracer wire meeting the City of Chanhassen's
Standard Specifications.
14. The applicant shall submit hydraulic design calculations and follow-up analysis for the newly
proposed stormwater conveyance system, including analysis for riprap stilling basins and
rock check dams as energy dissipaters.
15. One hundred percent (100%) construction plans shall be provided for review and approval
prior to commencement of any construction activities.
16. The applicant shall enter into maintenance agreements with the city and/or Lower Minnesota
River Watershed District to ensure maintenance responsibilities and ownership are the
responsibility of the HCRRA or their designee, in perpetuity, prior to commencement of any
construction activities.
17. The applicant shall provide further justification to the wetlands being impacted being
incidental. This can be accomplished through the WCA permit process that is currently
underway.
Prior to beginning construction activity, please contact Erik Henricksen, Project Engineer, to
receive authorization to proceed. Erosion control shall be installed and inspected and a tree
walkthrough must be completed. This permit is granted for a period of two (2) years from the
date of City Council approval, until February 10, 2022. The applicant will need to request a
Ms. Jessica Galatz
February 11,2020
Page 3
formal extension 60 days prior to the expiration date of the interim use permit if the project
cannot be completed in that time.
If you have any questions or need additional information,please contact Erik Henricksen, Project
Engineer at(952) 227-1165 or ehenricksen@ci.chanhassen.mn.us.
Since
40 11
Robert Generous,AICP
Senior Planner
ec: Kate Aanenson, Community Development Director
Todd Gerhardt, City Manager
Erik Henricksen, Project Engineer
Charles Howley, City Engineer/Public Works Director
Ryan Pinkalla, Water Resources Technician
Jill Sinclair, Environmental Resource Specialist
Lower Minnesota River Watershed District
Carver County Public Works
g:lplan12020 planning cases120-01 chanhassen slope failure project iup\approval letter.docx