4. Streambank Stabiliz ProjectMEMORANDUM
CITYOF
CHANHASSEN
7700 Market Boulevard
PO Box 147
Chanhassen, MN 55317
Adminislration
Phone: 9522271100
Fax: 9522271110
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Recreating Center
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Nalural Resources
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Senior Center
Phone: 9522271125
Fax: 952.2271110
Web Site
wwwci chanhassen mn us
To:
From:
Date:
Re:
Todd Gerhardt, City Manager
Lori Haak, Water Resources Coordinator ~(,~(,g?
March 31, 2004
Request for Funding, Streambank Stabilization Project, Christmas
Lake Homeowners Association
APPROVAL
Approval of this item requires a simple majority vote of those members
present.
BACKGROUND
The City of Chanhassen has a history of partnership with the Christmas Lake
Homeowners Association ("Association"). In 1996, the cities of Chanhassen
and Shorewood cooperated with the Association to write the Christmas Lake
Management Plan. The plan summarized water quality data on the lake and
established high priority projects, medium priority projects and future projects
to consider (Attachment 1).
In 1996, the City of Chanhassen rehabilitated the Curry Farms subwatershed
pond and stabilized the portion of Curry Creek directly east of Powers
Boulevard. The creek stabilization project was not able to proceed along the
creek's length to Christmas Lake because the City did not control the entire
length.
PRO,IECT
The Association is now interested in completing the Curry Creek stabilization
project. Preliminary restoration plans (completed in 1995) were used to
obtain quotes from two contractors. The Association will be responsible for
gaining permissions for access, securing all contracts, project design,
construction, site restoration and project management. The Association has
spoken to property owners along the creek, who have expressed support for
the project but, to the knowledge of staff, have not yet provided written
authorization to grant access.
The Cily of Chanhassen, A growing community with clean lakes, quality schools a charming downtown thriving businesses, winding trails and beautifui parks A great place t,n live work, and play'
Request for Funding, Christmas Lake Homeowners Association
March 31, 2004
REQUEST
In order to complete the remainder of the stabilization project, Association President
Greg Swirtz sent a letter on March 9, 2004 (Attachment 2) requesting a $30,000
contribution from the City of Chanhassen. This request is consistent with the $30,000
contribution that was identified in the Christmas Lake Management Plan (Attachment 3).
The total estimated cost is $69,000. The rest of the cost (approximately $39,000) will be
covered through homeowner participation and public grants, where applicable.
The funding for this project falls under the SWMP implementation item (Project #
SWMP-012) in the 2004-2008 Capital Improvement Program. At present, there is
$105,000 available for SWMP-012 projects (Attachment 4). The stabilization project is
one of two projects anticipated in 2004, with the other being a regional storm water pond
in the Frontier Trail area of Lotus Lake. An engineer's estimate of cost has not been
done for the Frontier Trail project, but the Surface Water Management Plan (1994)
estimates a cost of $51,628. Adjusting that number to a 2004 cost based on the
Construction Cost Index results in a cost estimate of $67,633. This is less than the
$75,000 that will remain in the CIP for SWMP-012 projects.
RECOMMENDATION
Staff recommends the City Council authorize the Mayor and City Manager to sign the
agreement with the Christmas Lake Homeowners Association (Attachment 5).
In authorizing execution of the agreement, the City Council approves the reimbursement
of the Association in the amount of $30,000 for project design and construction, provided
staff first reviews and approves the plans and specifications.
ATTACHMENTS
1. Christmas Lake Project Priorities and Goals, Christmas Lake Management Plan,
1996
2. Letter from G. Swirtz to L. Haak, dated March 9, 2004
3. Christmas Lake Projects and Costs, Christmas Lake Management Plan, 1996
4. 2004 - 2008 CIP for Surface Water Management Program
5. Agreement with Christmas Lake Homeowners Association
Christmas Lake Project Priorities and Goals
I. High Priority
A. Eurasian watermilfoil projects
1. Eradication if possible
2. Boat access monitor
3. Education of homeowners about native plants
B. Phosphorus reduction- Goal is to limit phosphorus concentrations in urban runoff to
around 160 ppb. This equates roughly to inputs of 46 pounds/year from Chanhassen and
55 pouncls/year from Shorewood.
1. Chanhassen stormwater projects
i. Curry Farms Subwatershed pond rehabilitation
a~i. Streambank stabilization - Goal is to reduce silt entering Christmas
Lake to 14,000pounds per year
iii. Holly Lane pond work
2. Shorewood
i. Evaluate existing stormwater treatment
ii. Update stormwater management plan
3. Watershed resident participation
i. Fertilizer management
ii. Shoreline erosion control
a. Establish native plants
b. Promote safe and sensible boating
c. Maintain outflow
4. Lake monitoring plan
C. Fish Community Balance
1. Cessation of rainbow trout stocking (not endemic to Christmas Lake)
2. Reduction of stunted panfish and roughfish
3. Restocking of appropriate gamefish
4. Catch and release information programs
D. Ecologically Sensitive Plant Control
1. Native plant management
II. Medium Priority
A. Paleolimnological Investigation
1. Collect and analyze lake sediment core for historical lake status
2. Literature search to reconstruct native vegetation of area
B. Curlyleaf Pondweed Control
C. Natural Landscaping of Shoreline 1. Reestablish wildlife habitat
2. Use shoreline and yard planting for geese control
D. Protect Loon Nesting Areas
III. Future Considerations
A. Rip rapping the Curry Farms creek bed from the 100-foot strip of Gabion bales to the
lake, if needed
B. Delta removal or dredging of silt at Curry Farms stream mouth
C. Classen pond alum treatment for pond improvement
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March 09, 2004
ItEC D
MAR 1 2 200~
CITY OF CHANHASSEN
Loft Haak
Water Resources Coordinator
City Of Chanhassen
7700 Market Boulevard
Chanhassen, MN. 55317
RE: Curry Creek stream bank stabilization with gabions
Dear Loft,
This letter shall serve as a formal request on behalf of the Christmas Lake Homeowners
Association for funding from the City of Chanhassen to follow through on its
commitment to share in the cost of improvements pertaining to the Curry Creek run off' as
it impacts Christmas Lake. In previous conversations the City of Chanhassen had agreed
to share in the cost of improving water quality issues pertaining to Bretton Pond and
Curry Creek as it impacts Christmas Lake. The City of Chanhassen did take care of
Bretton Pond but the Curry Creek project has not been completed as of this date. The
request is for the City of Chanhassen to contribute $30,000 towards the total cost of
$69,000 to complete the stream bank stabilization with gabions project..
Our Mission is to improve the water quality of Christmas Lake by trying to recreate the
natural state of the lake before agricultural and residential development. The natural state
should include predevelopment chemical make up, aquatic plant and animal populations,
and natural type shore vegetation. This will be financed through homeowner participation
and public grants.
I am asking for your help in completing the process with the City of Chanhassen's
commitment of $30,000 toward the repair of the above mentioned creek. Our goal is to
limit phosphorus concentration in runoff.to 160 ppb (now=610 ppb) leaving Bretton Pond
and 1,300 ppb at the mouth of the Curry Creek, and in addition reduce silt to 14,000
pounds per year (now -- 154,000 pounds per year). Christmas Lake is the "Crown Jewel"
of southern Minnesota lakes and with the City of Chanhassen's help we can keep it that
way.
In closing, I request that this issue be put on the April -04 City Council agenda.
President
Christmas lake Homeowners Association
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Christmas Lake Projects and Costs
Christmas Lake Association
Money spent by concerned Christmas Lake Residents
Consulting fees paid to Dick Osgood, preparation of the Osgood management plan, correspondence,
meetings, and discussion with Association board, comments on the Chanhassen management plan.
Total paid to date: 26,341
Consulting fees, Fortier & Associates for general administration, preparation of maps, watershed
information, including topography studies with Dick Osgood and project management. Evaluation of
conditions and docungntation. Tours of creek and watershed with homeowners and city officials. Meetings
and coordination with homeowners and city officials.
Total paid to date: 19,457
Estimated Budgeted Costs for the Christmas Lake Association, 1996
a. Public access monitor
b. Milfoil inspections
c. Lake Management Plan
d. Special Projects
e. Consultants
Total paid to date or committed by the Christmas Lake Association:
9,800
1,500
3,400
2,000
3,000
Total Budgeted Costs: 19,700
65,498
City of Chanhassen, Costs
1. Chanhassen Storm Water Projects
a. Curry Farms Subwatershed pond rehabilitation
'~'b. Streambank stabilization with gabions
c. Holly Lane pond work
2. Lake Management Plan
Total estimated costs for the City of Chanhassen:
(Total paid to date: $71,000)
90,000
30,000
60,000
3,400
183,400
City of Shorewood, Estimated Costs
1. Christmas Lake Management Plan 3,400
2. Evaluate existing storm water treatment 2,500
3. Update storm water management plan 18,000
Total estimated costs for the City of Shorewood: 23,900
Total: 272,798
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Capital Improvement Program
City of Chanhassen, MN
2004 thru 2008
Project# SWMP-012
Project Name SWMP Implementation
Type Improvement Priority n/a
Useful Life Contact
Category SWMP Department Surface Water Management
Trade-In Value Total Project Cost
$1,045,000
Descfiptiori
Il
This project implements projects identified as high priority by the City's Surface Water Management Plan, the National Pollutant Discharge Elimination System
(NPDES) Phase 1I permit, City Council and/or City staff.
Justification J
These projects are necessary to meet state and federal government requirements for storm drainage; address storm water issues in existing developments; maintain
existing infrastructure; and construct the infrastructure ~ecommended by the City's Surface Water Management Plan.
Prior Expenditures 2004 2005 2006 2007 2008 Total
[ 305,000 [ Construction 105,000 190,000 185,000 105,000 155,000 740,000
Total Total 105,000 190;000 185,000 105,000 155,000 740,000
Prior Funding Sources 2004 2005 2006 2007 2008 Total
i o5,oool Surface Water Utility Fund 105,000 190,000 185,000 105,000 155,000 740,000
Total Total 105,000 190,000 185,000 105,000 155,000 740,000
Operational Impact/Other
lCitywide. No map.
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AGREEMENT
AGREEMENT entered into this . day of ,2004, by
and between the CITY OF CHANHASSEN, a Minnesota municipal corporation ("City") and
the CHRISTMAS LAKE HOMEOWNERS ASSOCIATION ("HOA").
RECITALS
A. In 1996 the City, the HOA, and the City of Shorewood cooperated in the
preparation of the Christmas Lake Management Plan.
B. A priority goal of the Management Plan is streambank stabilization to reduce silt
entering Christmas Lake.
C. In 1996 a portion of the streambank stabilization was completed. The proposed
project will now complete the stabilization.
D. The City supports the project and finds that it would improve water quality in
Christmas Lake.
NOW, THEREFORE, THE PARTIES AGREE AS FOLLOWS:
1. PROJECT DESIGN AND CONSTRUCTION. The HOA will have prepared
plans and specifications for the completion of Curry Creek stabilization. The plans and
specifications shall be subject to the review and approval of City staff. After approval of the
plans and specifications by City staff, the HOA will enter into contracts to complete the work.
The HOA will administer the contracts and pay the contractors. The City will not be a party to
the contracts or responsible for the work.
2. COST ALLOCATION. The City will reimburse the HOA $30,000.00 of the
project cost. The balance of the project cost, estimated to be $39,000.00, shall be paid by the
HOA. Payment to the HOA shall be made upon project completion.
CITY OF CHANHASSEN
CHRISTMAS LAKE HOMEOWNERS
ASSOCIATION
BY: BY:
Thomas A. Furlong, Mayor
AND
Todd Gerhardt, City Manager
Its
111318.01
RNK:03/30/2004