3 2006 Street Improvements Proj. 06-01
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
www.ci.chanhassen.mn.us
3
MEMORANDUM
TO:
...-;70.
Paul Oehme, City Engineer/Dir. of Public Works \'
FROM:
Alyson Fauske, Assistant City Engineer
c~
DATE:
February 13, 2006
SUBJ:
Continuation of the Public Hearing for 2006 Street Improvement
and Order Improvements and Preparation of Plans and
Specifications - Project No. 06-01
BACKGROUND
On September 26, 2005, Council authorized the preparation of the 2006 Street
Improvement feasibility report.
On December 8, 2005, staff held an open house meeting with residents in the
Koehnen neighborhood to discuss the proposed street and utility reconstruction
project.
On December 15, 2005, staff held an open house meeting with residents in the
Chanhassen Hills neighborhood to discuss the proposed street rehabilitation
project.
On January 9, 2006, Council accepted the feasibility report and called for the
public hearing for the project.
On January 23, 2006, Council opened the public hearing, heard testimony and
discussed the improvements proposed for the Koehnen area.
DISCUSSION
The street improvements proposed for 2006 were identified using the City's
Pavement Management Program and because of the utility problems in these
areas. The City's consultant for the project will be at the meeting to present
information to City Council and to answer questions.
Koehnen Area
The streets in this area are recommended for reconstruction. These streets are 35
years old and are in need of replacement. The streets currently do not have
concrete curb and gutter. The reconstruction area includes approximately 1.05
miles of street, including West 63rd Street, Koehnen Circle East, Koehnen Circle
The City of Chanhassen · A growing community with clean lakes, quality schools, a charming downtown, thriving businesses, winding trails, and beautitul parks A great place to live, work, and play.
Paul Oehme
February 13,2006
Page 2
West, Cardinal Avenue, Blue Jay Circle, Audubon Circle and Yosemite Avenue
(from 6440 Yosemite A venue to the City limits). Concrete curb and gutter is
proposed to be included in the street design. Also, the street improvement project
will include replacement of all watermain, replacement of some sanitary sewer,
installation of storm sewer and construction of stormwater treatment ponds.
The watermain in this area is cast iron which has resulted in 23 documented
watermain breaks. It is recommended to replace the watermain in this area along
with the water services in the right-of-way.
Televising of the sanitary sewer indicates that portions of this utility are "egged",
sagging and/or cracked. Bolton & Menk, the consultant engineer the City has
contracted for this project, recommends that portions of the sanitary sewer
exhibiting "extreme" sagging or segments that are cracked be replaced.
Storm sewer will be installed and will outlet to one of three ponds that will be
constructed in conjunction with the project. The ponds will treat the runoff before
discharging to other water bodies.
Forty percent (40%) of the street rehabilitation costs are proposed to be assessed
to the benefiting property owners within the project area. The preliminary
assessment amount for the Koehnen area is $7, 100/lot and is proposed to be
assessed over a lO-year period at 6% interest.
The public hearing for this project began at the January 23, 2006 City Council
meeting.
The following summarizes the most of the residents' questions and responses by
staff:
· Retaining wall on Yosemite and 63rd Street are too high and will be a
safety concern.
Modular block retammg walls are proposed at various locations along
Yosemite and 63rd Street. The walls are necessary to decrease the side
slopes off the roadway so the boulevard can be maintained and erosion
does not occur. The tallest wall proposed is approximately 9' tall at one
point on Yosemite. Most of the walls average 3' tall. The walls are
shown on the attached drawing. A fence will be installed on walls that are
over 4' tall. The walls are currently designed in back of the roadway
approximately 10' to provide a clear zone for the traveling public and
pedestrians. The walls are necessary to keep the project limits within the
G:\ENG\pUBLIC\06-0 I 2006 SU'ed Il1Iprovements\02-13-06 public hearing.doc
Paul Oehme
February 13,2006
Page 3
existing right-of-way and to decrease impacts to boulevard trees. Staff
intends to work with the property owners prior to retaining wall design
and construction to try to minimize the amount of walls constructed. As
staff has done with the Lake Lucy Road improvement project last year,
staff worked with the residents to obtained temporary construction
easements to grade on private property to minimize the amount of walls
and construction costs. These discussions typically are imitated after the
award of a contract and meetings with the wall contractor become
available. The retaining walls are one of the last items to be constructed
on a roadway project, therefore, will have sufficient time to work through
the final field design issues.
· Perceived speeding problem and additional cut through traffic on
Yosemite due to the proposed wider roadway section.
Staff is proposing to use State Aid funds that the City receives annually
from the gas tax proceeds to help pay for the City's share of the Yosemite
improvements. State Aid rules require a 32' wide road to support the
proposed design. Yosemite is currently 27' wide. The City standard
roadway width is 31' . Yosemite connects into Apple Road to the north in
the city of Shorewood. A section of roadway north of Lake Lucy Road is
not proposed to be improved in conjunction with this project.
Staff does not believe that the 1,650' stretch of Y osemi te proposed to be
improved and widened will increase the speed or encourage cut through
traffic in this area.
· Property owner concerned about proposed pond at the end of Koehnen
Circle East. Perceived concern about flooding a house, increased
groundwater table, children falling into the pond, mosquitoes and pond
clean out.
The storm sewer design includes a small storm water pond on a vacant
parcel in a low lying area at the end of Koehnen Circle East. The City has
purchased a drainage and utility easement from the property owner to
construct this pond. The pond is required to meet local and state
requirements for water quality and rate control. Ponds are standard
improvements for all new developments to fulfill water quality and rate
control requirements. The City has hundreds of small storm water ponds
that are currently being maintained and many are as close to properties as
the one being considered. The pond design includes a very shallow 10'
wide shelf around the pond to provide a safety area for anyone on the edge
G:\ENG\pUBLIC\06-0 I 2006 Street Improvements\02-13-06 puhlir..: hearing.uor..:
Paul Oehme
February 13,2006
Page 4
of pond that could accidentally fall in. All storm water ponds are
constructed with emergency overflows so during large rain events, the
water is directed to designated areas. The pond will be designed so that
with the emergency overflow, the water should not back up on to the
adjacent private property. The drainage area for the pond is not proposed
to change so no additional runoff will be entering the pond. The pond will
be dug out to hold the water and typically does not increase the
groundwater tables. Staff will continue to work with the property owner
on the pond design to address their concerns. Staff has committed to
staking the pond area in the field to help them understand were the pond
will be constructed and how the drainage in this area will be improved
because of the installation of the pond.
· Property owner requested more street lights on 63rd Street.
Currently, there are six overhead street lights in the Koehnen
neighborhood. Four of the street lights are on 63rd Street at all
intersections. It has been the City's practice to assess 100% of the street
lighting costs back to the benefiting property owners. In this situation, the
street lights are sufficient to light most of the major traffic conflict points
and most of 63rd Street. Staff does not feel the majority of the property
owners will want to pay for additional street lights. Staff will work with
the individual property on 63rd Street and discuss the cost with her to see if
she or her neighbors would like an additional street light on their property.
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project area be assessed for any potential lots splits.
Staff has reviewed this request and has found three parcels could be
subdivided with an additional five lots created. By adding the additional
fi ve lots to the project would reduce the estimated assessment amount per
lot to $6,607. With the additional lots splits, one property owner could be
assessed for three lots or $19,821.
Staff has finalized a special benefit consultation report for the Koehnen area
project. The report investigated and analyzed probable special benefit to be
deri ved from the street project. The purpose of the report was to provide a typical
range of special benefits anticipated for single-family residential property in the
project area. The analysis looked at sales of homes in the metropolitan area
where street reconstruction projects had been completed. The report investigated
sales that took place before and after reconstruction projects in order to isolate
benefit. The report looked at similar home values that are in the Koehnen area.
G:\ENG\pUBLIC\06-01 2006 Street Ill1provelIlents\02~ 13-06 puhlic hearing.doc
Paul Oehme
February 13, 2006
Page 5
Based on this report, the preliminary assessment can be supported by the
increased benefit to the property and thus fulfill the MS 429 requirements.
Chanhassen Hills
At the February 13, 2006 Council meeting, staff would like to discuss the
Chanhassen Hills area proposed improvement and continue the public hearing on
for the project. The Chanhassen Hills area project includes resurfacing or
rehabilitation of the streets. These streets are 15 years old and are recommended
for milling and overlaying. The streets have been sealcoated twice and can no
longer be maintained adequately with preventative pavement management
techniques. Improvements consist of milling the pavement and paving a
minimum of 2" bituminous. Damaged, "alligatored" pavement areas will be
removed and repaved prior to the overlay. Severely damaged curb will be
replaced. Draintile in back of the curb is also proposed to be included at various
locations. The water table in this neighborhood is very high and most properties
with sump pumps run all year long. In 2000, the City had a sump pump
inspection program that identified several properties in this area with illicit sump
pump discharges connected directly into the sanitary sewer. At that time, all of
the illicit discharges were removed. In working on the Inflow/Infiltration
program, this area again has become a concern for illicit discharges. By including
the draintile in with the street improvement project, the City will give the
residents another alternative to discharge the sump pump water into a city-
maintained system.
Forty percent (40%) of the street rehabilitation costs are proposed to be assessed
to the benefiting property owners within the project area. The preliminary
assessment amount for the Chanhassen Hills area is $1,698.15/lot and is proposed
to be assessed over an 8-year period at 6% interest.
Four residents attended the Chanhassen Hills area open house on December 15,
2005. The following generalizes the questions and comments received at the
open house:
· Why doesn't the City pay for the entire project cost?
· Who decided these streets need to be worked on?
· What is the project schedule?
· Will Draintile be included in the project?
All property owners' questions were answered at the meeting or with a follow-up
letter or phone call.
G;\ENG\pUBLIC\06-0 1 2006 Street Il11rrovelllel1ts\02-13~06 publil.: hearing.dl1l.:
Paul Oehme
February 13,2006
Page 6
Final assessment amounts will be based on actual construction bid amounts
including the indirect costs to prepare and administer the project.
Lake Ann Park
Also included in this year's street project are proposed improvements to the
parking lots at Lake Ann Park. Most of the drives and parking areas are in very
poor condition and are in need of reconstruction. The improvements include
reconstruction of the roadways, realignment of roadways, reconstruction of
parking areas and overlay of parking areas. Also included will be placement of
concrete curb and gutter in parking areas.
These components of the project will be presented to City Council at the public
hearing.
Funding for this project is proposed as follows:
ESTIMA TED 2006 CIP 2006 CIP
ITEM COST Budget Project Number
Amount
Street Reconstruction $ 1,561,073 $ 500,000 ST-012 (MSA)
1,600,000 ST-012
Rehabilitation Area ST -018 (Pvmt.
(Chanhassen Hills) 661,300 125,000 Mgmt. )
Subtotal, Streets $ 2,222,373 $ 2,225,000
Lake Ann Park $ 321,235 $ 395,000 PK&T -051
Storm Sewer 586,011 400,000 SWMP-019
Sanitary Sewer
Reconstruction 185,679 310,000 SS-014
Watermain
Reconstruction 544,585 440,000 W -024
TOTAL $ $3,859,833 $ 3,770,000
The estimated costs for storm sewer improvements are higher than the budgeted
amount since the detailed storm sewer design was not complete when the budget
amount was determined. Staff is looking at using different materials for pipe to
help offset these costs.
G:\ENG\pUBLlC\06-01 2006 Street Improvements\02-13-06 public hearing.ooc
Paul Oehme
February 13,2006
Page 7
The estimated watermain costs are high due to the unforeseen increase in the cost
of watermain pipe. Potential new revenue that was not budgeted for in 2006 may
be able to be used to help offset these costs.
The tentative schedule for this project is as follows:
Open Public Hearing (Koehnen Area)
Continuation of Public Hearing (Chanhassen Hills Area);
Order Plans and Specifications
Approve Plans and Specifications; Order Ad for Bid
Bid Opening
Accept Bids; Order Assessment Hearing
Neighborhood Meeting (Koehnen area)
Neighborhood Meeting (Chanhassen Hills area)
Assessment Hearing/Adopt Assessment Roll/Award
Contract
Start Construction
Construction Complete
January 23,2005
February 13,2005
April 10, 2006
May 2, 2006
May 8, 2006
May 17,2006
May 24,2006
June 12,2006
June, 2006
October, 2006
The project start and completion dates are later than originally anticipated due to
changes in MnDOT's State Aid review process, and because the State is still
waiting to receive Shorewood's request to designate Apple Road as an MSA
route. The route designation is required prior to MnDOT reviewing and
approving construction drawings. The City's consultant is prioritizing the
preparation of Yosemite A venue plans in an attempt to get the project back to the
original anticipated schedule. However, if the route designation is not completed
soon and MnDOT's plan review is longer then anticipated, the Koehnen project
area may need to be delayed.
RECOMMENDA TION
Staff recommends that City Council order the improvements and preparation of
plans and specifications for City Project No. 06-01.
c: Marcus Thomas, Bolton & Menk
Attachments
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Capital Improvement Program
City ofClumhossen, MN
ST -012
2006 thru 2010
Contact Unassigned
Department Street hnprovements
Project #
Type hnprovement
Usefnl Life Unassigned
Category StreetslHighways
Priority nla
Project Name Annual Street Improvement Program
Account # 1
Account #2
Account # 3
Total Project Cost $9,900,000
Description 1
Annual project to rehabilitate and reconstruct streets in the City. Current 5-year plan shows the following neighborhood areas:
2006 2007 2008 2009 2010
Residential Koehnen Area S ShoreDr Laredo Dr/Ln Chaparral Erie Ave Area
Chan Hills Area Bighorn Dr Saratoga Dr/Cir Lone Cedar Area Kiowa Trail
Chippewa Tr
Triple Crown Est
MSA Audubon Rd So W 78th St
Justification I
The City uses a Pavement Management System to monitor the condition of the City streets. While proper maintenance extends the life of the street and is cost
effective, a street will eventually deteriorate to a point that further maintenance is no longer cost effective. Rehabilitation projects extend the life of the street. In
cases with utility or subgrade issues, reconstruction ofthe street is necessary. A feasibility study is written to consider the merits of the project and scope of work.
Expenditures
Construction
2006
2,100,000
2,100,000
2007
3,200,000
3,200,000
2008
1,400,000
1,400,000
2009
1,300,000
1,300,000
2010
1,900,000
1,900,000
Total
9,900,000
9,900,000
Total
Funding Sources 2006 2007 2008 2009 2010 Total
AssessmentIRevolving Assess 1,600,000 1,100,000 1,400,000 1,000,000 1,900,000 7,000,000
MSA 500,000 2,100,000 300,000 2,900,000
Total 2,100,000 3,200,000 1,400,000 1,300,000 ' 1,900,000 9,900,000
Operational ImpiICt/Other
I
-c-
This project may decrease maintenance costs.
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Capital ImprovenientProgram
City of Chanhassen, MN
ST -018
2006 thru 2010
Contact Paul Oehme
II
Department Street Improvements
Account # 1 420-0000-4751
Account # 3
Type Maintenance
Useful Life 7-10years
Category Streets/I-lighways
Priority n/a
I.
Project #
Project Name Pavement Management
Account #2
Total Project Cost $1,925,000
[II
Description I
This project will provide maintenance such as crack sealing, seal-coating, pothole patching for city streets. The projects will be detennined annually based on the 11.11
pavement condition index as generated by the pavement management program.
III
Justification I
. This will provide a centralized funding mechanism that will help reduce the effect on General Fund operating expenditures.
III
[II
Expenditures
Maintenance
2006
385,000
385,000
2007
385,000
385,000
2008
385,000
385,000
2009
385,000
385,000
2010
385,000
385,000
Total
1,925,000
1,925,000
III
Total
III
III
Funding Sources 2006 2007 2008 2009 2010 Total
MSA 168,500 134,250 117,125 117,125 117,125 654,125
Tax Levy 216,500 250,750 267,875 267,875 267,875 1,270,875
Total 385,000 385,000 385,000 385,000 385,000 1,925,000
[II
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OperationoJ Impact/Other I
This will reduce the need to reconstruct streets and will allow us to more closely match the life of streets to the utility lines that lie underneath them. This will allow
better coordination when we need to replace water and sewer lines with replacing roads.
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II
Capitol Improvement Program
City of Chanhossen, MN
SWMP-019
2006 thru 2010
Contact Unassigned
Department Surface Water Management
II
Account # 1 720-0000-4702
Account # 3
Type Improvement
Useful Life Unassigned
Category SWMP
Priority n/a
II
Project #
Project Name Street Improvement Projects - Storm Water Mgmt
Account #2
Total Project Cost $1,100,000
II
Description I
An annual amount set aside for storm water management infrastructure construction or expansion associated with street improvement projects undertaken by the II. . .
engineering and public works departments.
III
Justification
I
II
Street improvement projects frequently require construction or expansion of storm water management infrastructure in order to comply with federal, state and local
regulations, as well as protecting existing and proposed development adjacent to the projects.
II
Expenditures
Construction
2006
400,000
400,000
2007
150,000
150,000
2008
300,000
300,000
2009
100,000
100,000
2010
150,000
150,000
Total
1,100,000
1,100,000
II
Total
II
II
Funding Sources
Surface Water Utility Fund
Total
2006
400;000
400,000
2007
150,000
150,000
2008
300,000
300,000
2009
100,000
100,000
2010
150,000
150,000
Total
1,100,000
1,100,000
II
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Operational Impact/Other
I
II
Inventory, inspection and maintenance of new infrastructure will be required; Citywide. No map
II
II
II
II
128
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Capital Improvement Program
City of Chanhassen,. MN
SS-014
2006 thru 2010
Contact Unassigned
Department Sanitary Sewer Improvements
Account # 1
Account # 3
Type Improvement
Useful Life Unassigned
Category Utilities
Priority nla
Project #
Project Name Sanitary Sewer Replacement
Account #2
Total Project Cost $810,000
Description I
Replacement or rehabilitation of existing saniiary sewer lines in conjunction with the reconstruction of the City street.
Justification I
The City considers the condition of the existing utilities in the process to select streets for rehabilitation in an effort to realize cost savings by consolidating these
projects.
Expenditures
Construction
2006
310,000
310,000
2007
2008
250,000
250,000
2009
2010
250,000
250,000
Total
810,000
810,000
Total
Funding Sources
Sewer Utility Fund
2006
310,000
310,000
2007
2008
250,000
250,000
2009
2010
250,000
250,000
Total
810,000
810,000
Total
Operational Impact/Other
I
.
This project will decrease maintenance costs.
109
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I
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I.
I.
II.::
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I'I
II
II
,II
Capital Improvement Program
City of Chanhassen, MN
W -024
2006 thru 2010
Contact Unassigned
Department Water System Improvements
I
Account # 1
Account #2
Account # 3
Type Improvement
Useful Life Unassigned
Category Utilities
Priority n/a
I
Project #
Project Name Watermain Replacement
Description I
Replacement of existing water main lines in coordination with the reconstruction of the City street.
Total Project Cost $1,240,000
-
II
-
Justification I
The City considers.the condition of the existing utilities in the process to select streets for rehabilitation in an effort to realize cost savings by consolidating these
projects and also to avoid potential cuts in recently improved streets. 1f significant repairs are necessary to the existing water main, replacement may be the most
cost effective option. Given the highly corrosive soils in the City, water main replacement is an ongoing project in the City.
-
-
Expenditures
Construction
2006
440,000 .
440,000
2007
2008
350,000
350,000
2009
2010
450,000
450,000
Total
1,240,000
1,240,000
-
Total
-
-
Funding Sources
Water Utility Fund
2006
440,000
.440,000
2007
2008
350,000
350,000
2009
2010
450,000
450,000
Total
1 ,240,000
1,240,000
~
Total
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OperatiiilUll ImpllCt/Other
I
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These projects will decrease maintenance costs.
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142
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Capital Improvement Program
City of Chanhassen, MN
PK&T -051
2006 thru 2010
Contact
Project #
Department Park & Trail Improvements
Type Improvement
Useful Life 30 Years
Project Name Lake Ann Park Road and Parking Lot Rehabilitation
Account # 1 101-0000-4702
Account # 3
Category Park
Priority n/a
Account #2
Total Project Cost $395,000
D~cripwn I
Reconstruction and resurfacing of six parking lots and 1/2 mile of asphalt roadway in Lake Ann Park.
Justification
I
This portion of the existing improvements are 20-35 years old and have reached the end of their useful life. The poor conditions of these hard surface areas are a
significant distraction to the overall quality of the remainder of the park's attractions.
Expenditures
Construction
2006
395,000
395,000
2007
2008
2009
2010
Total
395,000
395,000
Total
I'
Funding Sources
. General Fund
2006
395,000
395,000
2007
2008
2009
2010
Total
395,000
395,000
Total
I Ope_bn~ho
81