2.5 Chanhassen Nature Preserve - Trail Master Plan
CITY OF
CHANHASSEN
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Administration
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Park & Recreation
Planning &
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The City of Chanhassen · f\
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MEMORANDUM
TO:
Park and Recreation Commission
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FROM:
Todd Hoffman, Park & Recreation Director
DA TE:
June 18,2007
SUBJ:
Chanhassen Nature Preserve - Trail Master Plan
The Chanhassen Nature Preserve is a 11O-acre park preserve located south of
Highway 5 and west of Galpin Boulevard. The preserve has street frontage on
Highway 5, Galpin Boulevard, Century Boulevard and Coulter Boulevard. This
parkland was assembled in three separate acquisitions initiating in 1995 with the
donation of 57 acres. Subsequent acquisitIons were made using parkland
dedication and cash purchase. Today the property is the largest open space
preserve in the city's park system and serves as an Important refuge for many
plant and animal species.
The area is predominately wetland interspersed with lowland and upland
forested areas. Deer, wild turkeys, hawks, owls, beavers, raccoons, mink, ducks,
geese, egrets, herons and many varieties of songbirds inhabit the preserve. The
area is also home to a rich array of amphibIans. Three storm water management
ponds are situated within the park near Coulter Boulevard and provide open
water refuges for waterfowl and other animals. Additional storm water ponds
are located on the southern fringe of the preserve adjacent to the Autumn Woods
neighborhood.
Master planning for the park preserve has focused on the development of a
2-mile trail loop around the perimeter of the preserve. The inaugural segments
were constructed starting in 1997 as a condition of approval for the Autumn
Ridge Town Homes and Autumn Woods neighborhoods. Additional trail
segments were constructed with the Galpin Boulevard and Century Boulevard
road projects. More recently a significant section of trail was completed in
conjunction with the building of the Holiday Inn Express Hotel. The trail
construction project linked to the development of Arboretum Business Park ih
Addition represents the final section of the 2-mile trail loop.
The developer of the 7th Addition, Chaska Gateway Partners and S. Asim Gul,
are responsible for the planning, engineering and construction of this final
section of trail. The city, through its park and trail dedication fund, will refund
the developer for the cost of trail construction in addition to a 10% construction
management fee. In preparation for the construction of this final section of trail,
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Park & Recreation Commission
June 18, 2007
Page 2
the city retained Brauer and Associates to complete the master planning for the
Chanhassen Nature Preserve Trail. Representatives from Brauer and Associates
will make a presentation concerning their work at your June 2007 Commission
meeting. We anticipate that the developer will initiate work on their project,
including the trail work later this summer.
G:\park\th\Chanhasscn Nature Preserve Master Plan.doc
CITY OF
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Web Site
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The City of Chanhassen · 1\ Q'GWIIHj
MEMORANDUM
TO:
Bob Generous, Senior Planner
Alyson Fauske, Assistant City Engineer
FROM:
Todd Hoffman, Park and Recreation Dircctor
DATE:
May 7, 2007
SUBJ:
Park and Trail Conditions for Arboretum Busincss
Park ih Addition
The subdivision requcst by Chaska Gateway Partners, LLP and S. Asim Gul for
Arboretum Business Park 7th Addition is subject to thc following trail construction
conditions:
Tmils
The developer shall be responsible for planning, cngineering, and constructing the
"wetland trail." This trail follows an alignment generally described as the western
edge of Outlot B, Arboretum Business ~ark. Connection points for this new trail
shall be the terminus of the Trotter's Ridge trai I, the intersection of Century
Boulevard and West 82nd Street, and the intersection of Century Boulevard and
Water Tower Place. Portions of said construction will occur off-site of the
Arboretum plat within land owned by the City of Chanhassen. Trail easements
within Outlot C will be required to accommodate the trail. A diagram depicting the
general alignment of the "wetland trail" is attached.
In consideration for this trail construction, the city shall compensate the developer
full costs of trail construction plus a 10% design and construction management fee.
Bid documents, including plans and specifications, shall be approved by the Park &
Recreation Director and City Engineer prior to soliciting bids. Project bidding shall
occur in a competitive environment with a minimum of three bids being received.
The results of the bidding process shall be reviewed with the Park & Recreation
Director and City Engineer prior to award. Cash payment for trail construction
shall be made from the City of Chanhassen to Steiner Development upon
completion, inspection, and acceptance of the trail.
In lieu of crediting trail fees against said trail construction, full trail fees shall be
collected per city ordinance for all lots in the Arboretum Business Park. Said fees
shall be deposited into the city's trail dedication account-the same account that
will fund the cash payment being made to the developer for trail construction. The
cash trail fce for Lot 1, Arboretum Business Park 7th Addition is $4,960. Thc cash
trail fee for Lot 2, Arboretum Business Park ih Addition is $5,230.
CITY OF
CHANHASSEN
17110 Market BOlli,:VdrrJ
POBox 147
C!la:lllaS5i'II. MN 55317
Administration
Phu'le 95?m.l11J0
9S2.227 111 U
Building Inspections
951'227 1
1190
Finance
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Park & Recreation
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952 227 1004
Planning &
Natural Resources
Phone 952.m.1130
952 227 1110
Public Works
Ph"le 952 227.1300
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Senior Center
1115
1110
Web Site
The City of Chanhassen · 1\
Arboretum Business Park i" Addition
May 7, 2007
Page 2
The current plan submittal does not include this trail. Future submittals must depict
an agreed upon trail alignment and details for a required bridge crossing and typical
construction cross section for a 10-foot wide trail.
Parks
All park conditions of approval have been met for Arboretum Business Park ih
Addition.
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10417 Excelsior Houlcvard
Suite Number One
Hopkins, MN 55343
Tel (952) 238-0831
Fax (')521 2JB-0833
Vvcbsitc: www.brJucr-ltd.com
To: Todd Hoffman
From: Scott Yonke, Landscape Architect, Brauer & Associates, Ltd.
Date: June 15, 2007
Re: Chanhassen Nature Preserve - Trail Master Plan
Todd,
One behalf of Brauer & Associates, I would like to thank you for the opportunity to assemble the Chanhassen Nature
Preserve Trail Master Plan and related documents.
The following information and graphics has been prepared for review by the City of Chanhassen Park Board and other City
staff. At your discretion, please share the information attached with staff and appropriate individuals as needed for the Park
Board meeting scheduled for June 26,2007. The information and graphics submitted for review is indentified below:
. Trail Master Plan- illustrates the proposed alignments and connections for the trail and amenities in the primary
corridor and the future corridor areas. Items included within the primary corridor consist of the primary trail,
trailhead west (Detail 1 ), and the pedestrian bridge (Detail 2). The interpretive nodes (1-3) and the proposed
stairway can be included within the primary corridor or can be additional add on items. These items have been
identified as additional add on items within the master plan cost estimate. The alternate trail location identified on
the plan is an alternate trail alignment for the primary trail. Items included in the future corridor consists of the
Trailhead North, parking lot, boardwalk and future trail alignment connections for the trailhead north to the
boardwalk and the loop along the southern edge of the wetland basin to the pedestrian bridge
. Trail Master Plan Sections - highlights indentified areas indicated on the Trail Master plan (Detail 1-4) with
character sketches if efforts to provide a sense of place and themes for the proposed trail and amenities.
. Master Plan Cost Estimate - highlights potential costs to develop the park as defined under the master plan.
The costs has been indentified for items included within the primary trail corridor and additional/future trail corridor.
I will be prepared to discuss each of these items at the scheduled Park Board meeting on June 26, 2007.
The entire Brauer team is pleased to be at this stage in the design process and is looking forward to discussing the overall
master plan package with the City of Chanhassen Park Board. We are also very pleased with the involvement of the City
Staff and look forward to more input as the project's design is refined.
Thank you,
Scott Yonke, RLA
Landscape Architect / Project Manager
MASTER PLAN COST ESTIMATE
Item Primary Trail Corridor Total Bid
(In Dollars)
1 Bituminous Trail - 8' Width (includes aggregate $95,000.00
subgrade)
2 Trail Clearing (assume 25' swath) $11,000.00
3 Trail Grading (assume 25' swath @1' depth) $42,240.00
4 Site Restoration - Trail Corridor (Native Grass Seed $12,000.00
Mix)
5 Retaining Wall (Boulder) (1.5' avg hL) $30,072.00
6 Culvert (under primary trails) $2,000.00
Trailhead West Interpretive Node (includes surface
7 material/subgrade, Kiosk, boulder sitting area, $10,000.00
ornamental boulders, plantings)
9 Pedestrian Bridge (assume 12' width x 30 span') $45,000.00
10 Creek Restoration (boulder stabilization, reconstruct $6,480.00
waterfall
Subtotal: $253,792.00
Continqency @ 10% 25,379.20
Fees, consultants, survevina, testina (ci) 15% 38,068.80
Total Estimated Cost: $317,240.00
Item Future / Additional Add On Items Total Bid
(In Dollars)
1 Bituminous Trail - 8' Width for additional loops and $33,000.00
connections (includes aggregate subgrade)
2 Trail Clearing (assume 25' swath) $3,750.00
3 Trail Grading (assume 25' swath @1' depth) $14,760.00
4 Site Restoration - Trail Corridor (Native Grass Seed $4,000.00
Mix)
5 Retaining Wall (Boulder) (1.5' avg hL) $2,880.00
6 Culvert (under additional trails) $2,000.00
Trailhead North Interpretive Node (includes parking lot-
7 10 cars, bif enclosure, kiosk, Identification signage, $55,000.00
ornamental boulders, plantings, site furniture, retaining
wall for parking lot, clearing, grading)
Other Interpretive Nodes (includes surface
8 material/subgrade, display board, boulder sitting area, $15,000.00
ornamental boulders, plantings)
9 Wood Boardwalk (assume 8' width) $300,000.00
10 Timber Stairway (assume 22 risers @6" per riser, 8' $4,500.00
width)
Subtotal: $434,890.00
Contingency @ 10% 43,489.00
Fees, consultants, survevina, testinq @ 15% 65,233.50
Total Estimated Cost: $543,612.50
Brauer Associates. Ltd.
H:\DRAWINGS\2007\07-17 Chan Trail MP\docs\estimates\master plan\Master Plan - Est.xls
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Trailhead West Interpretive Node (typ)
* Natural Sitting Area
* Interpretive / Education Infoflnation
* Kiosk
Existing Bituminous Trail (typ)
In Street Boulevard Areas
Proposed 8' Biullninous Trail
(Alternate Trail Locatioll)
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Project# 07-17 Date~ June 15th,