D-7. 2017 Street Rehabilitation Project7700 Market Boulevard
PO Box 147
Chanhassen, MN 55317
Administration
Phone: 9522271100
Fax 952.2271110
Building Inspections
Phone: 952.227.1180
Fax 952.227.1190
Engineering
Phone 952.227.1160
Fax 952.227.1170
Finance
Phone: 9522271140
Fax: 952.227.1110
Park & Recreation
Phone 952.2271120
Fax 952.2271110
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
7901 Park Place
Phone: 952.227.1300
Fax 952.227.1310
Senior Center
Phone: 952.227.1125
Fax: 952.227.1110
Website
www.ci.chanhassen.mn.us
MEMORANDUM
TO: Paul Oehme, Director of Public Works/City Engineer o v
FROM: Stephanie Smith, Project Engineer W �
DATE: October 24, 2016
SUBJECT: 2017 Street Rehabilitation Project No. 17-01: Accept Feasibility
Study; Call Public Hearing
PROPOSED MOTION
"The City Council adopts the attached resolution accepting the feasibility
report for the 2017 Street Rehabilitation Project No. 17-01 and calls the public
hearing for November 28, 2016.
City Council approval requires a simple majority vote of the City Council
present."
At the August 22, 2016 work session, staff reviewed with Council the proposed 2017
Street Rehabilitation in the Lake Susan Hills area.
On September 12, 2016, the City Council
authorized preparation of the feasibility study.
On October 18, 2016, staff held an Open
House for the proposed project.
Every year the City considers streets that are
in poor condition to be rehabilitated or
reconstructed. For the 2017 Street o
Rehabilitation Project, staff is proposing to
rehabilitate
approximately
11
1.9 miles of kv
streets in the
Lake Susan Hills
neighborhood.
The street
segments within
the proposed
project were
identified by the City's Pavement
Management software in conjunction with site investigations.
Chanhassen is a Community for Life - Providing for Today and Planning for Tomorrow
Paul Oehme
2017 Street Improvement Project:
Accept Feasibility Study; Call Public Hearing
October 24, 2016
Page 2
The proposed improvements generally consist of reclaiming the pavement surface and the aggregate
base underneath the pavement. Atypical areas with insufficient base underneath the pavement will
be reconstructed. Minor drainage improvements and some draintile installation are also included
within the project area. For the municipal water system, gate valve and hardware replacements are
proposed along with minimal hydrant replacement. Sanitary sewer work proposed includes spot
repairs of damaged manhole structures and inflow/infiltration remediation within the manholes.
City staff hosted an Open House for the neighborhood on October 18 from 4:30pm to 6:00pm.
Residents discussed the proposed project and told staff about their property and experience in the
project area. Residents reiterated concerns about the current condition of the street and subsurface
drainage in the project area and inquired into the assessment process. Resident correspondence will
be included in the staff report for the public hearing.
A feasibility report was prepared by the Engineering Department staff. It is estimated the City will
save between $85,000 and $100,000 with feasibility report preparation, design and construction
observation not being outsourced. A copy of the feasibility report is available in the Engineering
Department. Below is a summary of the feasibility findings:
The approximate 1.9 miles of streets in the project area were constructed between 1989 and 1993.
Sealcoats were performed in 1993, 1997 and 2005. A non-structural overlay was done on the
northern leg of Lake Susan Hills Drive, Egret Court, Heron Drive and Ibis Court in 2002. All streets
within the project are urban residential streets with concrete curb and gutter. Lake Susan Hills Drive,
Flamingo Drive and Heron Drive have a 5 -foot concrete sidewalk on one side.
Pavement condition scores generated by the City's pavement management software were considered
when determining street segments within the proposed rehabilitation area. Street segments are
surveyed every three years and a score or Overall Condition Index (OCI) is assigned to the street
segment. An OCI of 100 represents a new road. The streets within the Lake Susan Hills
neighborhood were last surveyed in 2015, and the OCI ranged from 30.3 to 65.6.
The proposed standard improvements include reclaiming the full depth of bituminous plus 4.5"-6.5"
of the aggregate base of the street. The top four inches of reclaimed material will be removed and
two, 2 -inch lifts of asphalt are proposed to be installed.
Select sidewalk panels that are damaged or may create a tripping hazard are proposed to be replaced
during this project, but would be paid for as part of the annual sidewalk maintenance rather than
from the budget for this project.
Hardware replacement is proposed on gate valves and will include the installation of zinc anode bags
to forestall corrosion. Minimal hydrant replacement is proposed for this project.
Sanitary sewer manholes with degraded concrete rings are proposed to have the rings replaced with
this project. Infiltration barriers and sealed manhole covers are proposed for all sanitary structures to
prevent future infiltration. The City's Public Works department will repair the infiltration between
manhole joints in-house rather than be included with the proposed project.
g:\eng\public\_2017 projects\17-01 street rehab\communication\161024_ cc_ accept teasibility.docx
Paul Oehme
2017 Street Improvement Project:
Accept Feasibility Study; Call Public Hearing
October 24, 2016
Page 3
A quantity of draintile is proposed for this project for installation at the back of curb, as there is a
record of resident concerns about subsurface drainage in the project area. Approximately 80 feet of
drainage structure replacement is proposed to address problems observed in several drainage
structures during inspection. Due to the shallow grade of the northern portion of Flamingo Drive,
the project is proposed to include analysis of warrants for additional catch basins to pick up
stormwater flow on the street.
Because there are no additional impervious surfaces that will be added to the 2017 project area, this
project would not trigger any of the Federal, State or Local surface water regulations. The proposed
project includes minor water main and sanitary sewer repairs but would not require a permit from the
MN Department of Health or the MN Pollution Control Agency, respectively. Because Lake Susan
Hills Drive has two intersections with Powers Boulevard (CSAH 17), a work in right-of-way permit
will be required from Carver County.
PROJECT FUNDING
Special assessments to the benefitting properties are proposed to pay for a portion of the proposed
2017 Street Improvement Project No. 17-01 per the City's Assessment Policy. The remaining
project costs are proposed to be paid from City funds. All utility improvements are proposed to be
paid for by the associated utility fund. The preliminary funding is shown below:
Funding Source
Assessments/Revolving Assessment
Fund
Stormwater Management Fund
Water Utility Fund
Sanitary Sewer Utility Fund
*Budgeted Amounts are from the proposed 2017 CIP Budget
Project Cost Amount
$1,105,000 $1,100,000
$90,000
$500,000
$109,000
$75,000
$127,000
$210,000
$1,431,000 $1,885,000
Unit assessments are proposed, meaning each parcel determined to be a benefitting property at the
time the assessment roll is approved will pay the same amount. Final assessment amounts will be
based on the construction bid price.
Preliminary estimated assessments are detailed below:
Total Estimated Street Cost: $1,105,000
40% assessed: 40% of $1,218,000 = $442,000
Number of assessable units: 187
Estimated unit assessment: $442,000 _ 187 units = $2,400/unit*
*Estimated assessments have been rounded to the nearest $100
The cost estimate includes a 10% construction contingency and a 5% estimate of indirect costs.
g:\eng\public\_2017 projects\17-01 street rehab\communication\161024_ cc_ accept feasibitity.docx
Paul Oehme
2017 Street Improvement Project:
Accept Feasibility Study; Call Public Hearing
October 24, 2016
Page 4
An assessment of $2,600/unit was noticed to the neighborhood. However, after site visits and
further investigation of the project area, staff reduced the quantity contingency on the estimated
reclamation and paving items for the street costs. This lowered the assessment amount from
$2,600/unit to $2,400/unit shown in the calculation above.
SCHEDULE
The following schedule is proposed contingent upon City Council approval to proceed with the
project:
Public Hearing; Order Preparation of Plans and Specifications
Approve Plans and Specifications; Order Ad for Bid
Bid Opening
Assessment Hearing; Award Contract
Construction Start
Substantial Completion
Attachments: Resolution
CIP Sheets
g:\eng\public\_2017 projects\17-01 street rehab\communication\161024_ cc_ accept feasibility.docx
November 28, 2016
January 23, 2017
February 15, 2017
March 27, 2017
June, 2017
August, 2017
CITY OF CHANHASSEN
CARVER AND HENNEPIN COUNTIES, MINNESOTA
DATE: October 24, 2016 RESOLUTION NO: 2016 -XX
MOTION BY:
SECONDED BY:
A RESOLUTION ACCEPTING FEASIBILITY STUDY AND
CALLING THE PUBLIC HEARING FOR THE 2017 STREET
REHABILITATION (LAKE SUSAN HILLS AREA)
PROJECT NO. 17-01
WHEREAS, pursuant to resolution of the Council adopted September 12, 2016, a report has
been prepared by City staff with reference to the above -referenced project, and this report is being
received by the Council on October 24, 2016, and
WHEREAS, the report provides information regarding whether the proposed project is
necessary, cost-effective, and feasible.
NOW, THEREFORE, BE IT RESOLVED by the Chanhassen City Council:
1. The Council will consider the improvement of such project in accordance with the report and the
assessment of abutting properties for a portion of the cost of the improvement pursuant to Minnesota
Statutes, Chapter 429 at an estimated total cost of the street improvements of $1,105,000.
2. Public hearing for the proposed improvements within the 2017 Street Rehabilitation (Lake Susan
Hills Areas) Project No. 17-01 shall be held on November 28, 2016 in the Council Chambers of City
Hall at 7:00 PM.
The clerk shall give mailed and published notice of the hearing and improvement as required by law.
Passed and adopted by the Chanhassen City Council this 240 day of October, 2016.
ATTEST:
Todd Gerhardt, City Manager
Denny Laufenburger, Mayor
YES NO ABSENT
Capital Improvement Program 2017 rhru 2021
City of Chanhassen, MN
Project# ST -012
Project Name Annual Street Improvement Program
Account#1 601-xxxx-4751 Account#3
Account 42 Account #4
Description
Department Street Improvements
Contact Paul Oehme
Type
Improvement
Useful Life
Unassigned
Category
Streets/Highways
Priority
n/a
Total Project Cost: $30,680,000
Annual project to rehabilitate and reconstruct streets in the City. Current 5 -year plan shows the following neighborhood areas:
2017 - Minnewashta Manor area and Lake Susan Hills Drive area
MSA - Park Road and Park Place
2018.Orchard Lane area
MSA - Lake Drive East and Dakota Ave (Highway 5 to Lake Drive East)
2019 - Choctaw area, Kurvers Point area and 96th Street
MSA - Minnewashta Parkway overlay and trail
2020 - Chan View area
MSA - Lake Lucy Road (Highway 41 to Galpin Blvd) and trail
2021 - Stone Creek area and Ches Mar Drive
City uses a Pavement Management System to monitor the condition of the City streets. While proper preventative maintenance extends th,
of the street and is cost effective, a street will eventually deteriorate to a point that further maintenance is no longer cost effective.
abilitation projects extend the life of the street. In cases when utilities or poor sub grade needs to be replaced or where streets have
eriorated to a point where rehabilitation will no longer be practical, reconstruction of the street is necessary. A feasibility study is written to
sider the merits of the project and scope of work.
Prior
Expenditures
2017
2018
2019
2020
2021
Total
16,405,000
Construction
4,375,000
2,700,000
2,300,000
3,800,000
1,100,000
14,275,000
Total
Total 4,375,000
2,700,000
2,300,000
3,800,000
1,100,000
14,275,000
Prior Funding Sources
2017
2018
2019
2020
2021
Total
16,405,000 Assessment/Revolving
3,275,000
1,600,000
1,100,000
3,300,000
1,100,000
10,375,000
Assess Fund
Total MSA
1,100,000
1,100,000
1,200,000
500,000
3,900,000
Total
4,375,000
2,700,000
2,300,000
3,800,000
1,100,000
14,275,000
project may decrease maintenance costs.
Capital Improvement Program 2017 rhru 2021
City of Chanhassen, MN
Department Surface Water Management
Contact Paul Oehme
Project# SWMP-019 Type Improvement
Useful Life Unassigned
Project Name Street Improvement Projects - Storm Water Mgmt Category SWMP
Account#1 720-7025-4751 Account#3 Priority n/a
Account #2 Account #4
Description Total Project Cost: $2,685,000
An annual amount set aside for storm water management infrastructure construction or expansion associated with street improvement projects
undertaken by the engineering and public works departments.
Justification
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.
Prior
Expenditures
2017
2018
2019
2020
2021
Total
1,5257o00
construction
500,000
250,000
80,000
250,000
80,000
1,160,000
Total
Total
Total 500,000
250,000
80,000
250,000
80,000
1,160,000
Prior
Funding Sources
2017
2018
2019
2020
2021
Total
1,525,000
Surface Water Utility Fund
500,000
250,000
80,000
250,000
80,000
1,160,000
Total
Total
500,000
250,000
80,000
250,000
80,000
1,160,000
new infrastructure will be required. Citywide. No map
Capital Improvement Program
City of Chanhassen, MN
Project # SS -014
Project Name Sanitary Sewer Replacement
Account#1 701-7025-4751
Account#2
Account#3
Account#4
or rehabilitation of existing sanitary sewer
projects.
2017 thru 2021
Department Sanitary Sewer Improvements
Contact Paul Oehme
Type Improvement
Useful Life Unassigned
Category Utilities
Priority n/a
Total Project Cost: $2,110,000
with the reconstruction of the City street.
utilities in the process to select streets
an effort to realize cost
Prior
Expenditures
2017
2018
2019
2020
2021
Total
1,300,000
Construction
210,000
250,000
50,000
250,000
50,000
810,000
Total
Total 210,000
250,000
50,000
250,000
50,000
810,000
Prior
Funding Sources
2017
2018
2019
2020
2021
Total
-1,3-00-,-00-01
Sewer Utility Fund
210,000
250,000
50,000
250,000
50,000
810,000
Total
Total 210,000
250,000
50,000
250,000
50,000
810,000
Capital Improvement Program 2017 rhru 2021
City of Chanhassen, MN
Project W-024
Project Name Watermain Replacement
Account 91 700-7025A751 Account#3
Account #2 Account #4
Description
Department Water System Improvements
Contact Paul Oehme
Type Improvement
Useful Life Unassigned
Category Utilities
Priority n/a
Total Project Cost: $5,220,000
;went of existing water main lines in coordination with the reconstruction of the City street projects or minor fixes of water distribution
for street rehabilitation projects.
lity considers the condition of the existing utilities in the process to select streets for rehabilitation in an effort to realize cost savings by
lidating these projects and also to avoid potential cuts in recently improved streets. If significant repairs are necessary to the existing water
replacement may be the most cost effective option. Given the highly corrosive soils in the City, water main replacement is an ongoing
x in the City.
Prior
Expenditures
2017
2018
2019
2020
2021
Total
3,325,000
Construction
75,000
770,000
100,000
850,000
100,000
1,895,000
Total
Total 75,000
770,000
100,000
850,000
100,000
1,895,000
Prior
3,325,000
Total
Sources 2017 2018 2019 2020 2021 Total
Total 75,000 770,000 100,000 850,000 100,000 1,895,000
Budget Impact/Other
Chese projects will decrease maintenance costs.