H-2. Orchard Lane Area Street and Utility Reconstruction – City Project 18-01: Public Hearing on Feasibility Study, Authorize Preparation of Plans and Specifications r �
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CITY OF ClIANHASSEN
Chanhassen is a Community for Life-Providing for Today and Planning for Tomorrow
MEMORANDUM
TO: Todd Gerhardt, City Manager
FROM: Paul Oehme, Public Works Director/City Engineer C
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DATE: August 28, 2017
SUBJ: 2018 Street Reconstruction Project No. 18-01: Public Hearing &Order Preparation of
Plans and Specifications
PROPOSED MOTION
"The City Council orders the preparation of plans and specifications for the 2018 Street
Reconstruction Project No. 18-01."
City Council approval requires a super majority vote of the City Council present."
BACKGROUND
On March 13, 2017, the City Council approved a consultant contract for the 2018 Street Reconstruction
Project and authorized preparation of the feasibility study.
On July 12, 2017, an open house was held to discuss the proposed project.
On August 14, 2017, the City Council accepted the feasibility study and called for the public hearing.
DISCUSSION Orchard Lane
Neighborhood
Every year the City considers streets that are in poor condition
to be rehabilitated or reconstructed. For the 2018 Street
Reconstruction Project, staff is proposing to make
improvements to approximately 0.7 miles of streets. The street
segments within the proposed project were identified by the
City's Pavement Management software, site investigations and
utility problems in the area.
The proposed project is in the Orchard Lane neighborhood in
the northwest corner of the city.
Sixty-fourth (64th) Street was constructed in 1988 and was
sealcoated in 1995 and 1999. All other streets where generally
constructed in 1974 and were sealcoated in 1995 and 1999.
The pavement condition indices (PCIs) are shown on the graphic below. A PCI of 100 represents a new
street. Streets with a PCI below 45 typically indicate distresses that require a full reconstruction,
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Todd Gerhardt
2018 Street Project No. 18-01:
Public Hearing;Order Plans&Specifications
August 28,2017
Page 2
therefore it is no longer cost effective to repair the streets with minor maintenance or perform a
bituminous overlay.
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The street widths vary between 20' and 26' within 30' up to 60' wide of right-of-way. The drivable
portion of the streets(i.e. the bituminous surface and the concrete gutter)is proposed to be the same as
the existing widths.
Sixty-fourth(64th) Street has curb and gutter and was constructed in 1988. These streets are somewhat
newer than the other streets and show less distress. However, the streets are significantly block cracked
and major maintenance is needed at this time. An overlay would prolong the life of the street however,
the street will show the reflective cracks soon after the street is paved. The street is proposed for a partial
reconstruction which would include reclaiming the existing roadway,removing some of the subgrade,
placing 10" of reclaimed material as aggregate base matching the existing section, spot curb and gutter
replacement, and placing new 4"bituminous surfacing.
All other streets are proposed to be fully reconstructed. The proposed pavement section includes 18" of
sand, 10" of Class 5 and 4"of bituminous as recommended by the soils engineer. Surmountable curb is
proposed to be installed in this area. Draintile is proposed to be added in the back of the curb.
Todd Gerhardt
2018 Street Project No. 18-01:
Public Hearing;Order Plans&Specifications
August 28,2017
Page 3
Water Main Improvements
The water main in this area is either cast iron or ductile iron pipe. Sixty-fourth(64th) Street is the only
area with ductile iron pipe which is not proposed to be replaced. One documented water main break is
shown on the graphic below. Due to the poor performance of cast iron pipe in the City, staff proposes to
replace the cast iron pipe with PVC water main. All services would also be replaced where water main is
being replaced.
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Sanitary Sewer Improvements
Staff has investigated and televised the condition of the sanitary sewer in this area. Approximately 110
feet of sewer is proposed to be replaced due to the condition of the pipe. The remaining sewer pipe is in
good structural condition, although some requires mineral removal, grouting and/or lining to reduce the
incidence of inflow and infiltration. These minor repair areas are also proposed to be fixed at this time.
Storm Sewer Improvements
These areas have very little stormwater infrastructure. Using the Surface Water Management Plan, a
new storm sewer system is proposed for the project area. Based on a hydrologic analysis, there is a need
for catch basins and storm sewer to transition from rural sections to urban sections and to tie into the
existing public storm sewer on the easterly end of the project area. The system will be comprised of
reinforced concrete pipe (RCP).
Stormwater water quality improvement options have been identified along with estimated costs and
treatment efficiencies for two different potential water quality treatment options to provide improved
conveyance and stormwater treatment. The proposed options would implement stormwater measures to
Todd Gerhardt
2018 Street Project No. 18-01:
Public Hearing;Order Plans&Specifications
August 28,2017
Page 4
provide treatment to reduce both phosphorous and total suspended solids while still providing
conveyance and rate control. Though several options were reviewed for feasibility,the limited public
land available,topography and narrow right-of-way in this area limits the options for stormwater
improvements. Easements may be required depending on the specific option(s) chosen.
The specific water quality Best Management Practices(BMPs)recommended for consideration consist j
of:
1. Rain gardens at 2500 and 2630 Orchard Lane at the existing low point.
2. Adding a drainage swale on the City property at Herman Field Park.
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Feasibility Report
The feasibility report was prepared by WSB and Associates. A copy of the feasibility report is available
in the Engineering Department for review.
An open house was held on Wednesday,July 12, 2017,to discuss the proposed project and to answer
questions; approximately 30 people attended. All of the residents'questions were answered at the
meeting and/or with a follow-up after the meeting.
PROJECT FUNDING
Assessments will be based on the City's assessment practice of assessing 40%of the street improvement
cost to the benefitting properties on a per lot basis. The assessments would be proposed for a 10-year
term at an interest rate of prime rate plus 2% at the time the contract is awarded.
Todd Gerhardt
2018 Street Project No. 18-01:
Public Hearing;Order Plans&Specifications
August 28,2017
Page 5
Budgets for the proposed work have been included in the 2017 CIP. A summary of the feasibility
estimate and CIP budget is below:
Funding Source Feasibility Budget
Estimate
Revolving Assessment Fund $ 1,184,000.00 $1,600,000
Stormwater Utility Fund $ 262,000.00 $200,000
Sanitary Sewer Utility Fund $100,000 $250,000
Water Utility Fund $560,000 $770,000
Total $2,106,000 $2,820,000
The estimated costs include 10% contingency and 11% indirect costs.
Estimated Assessments(Orchard Lane, Forest Circle, Forest Lane, and Oriole Ave):
Total estimated assessable street costs: $739,926.00
40% assessed: 40% of$1,203,600= $295,970.40
36 assessable units
$295,970.40-36 units=$8,221.40/unit**
Estimated Assessments for 64th Street:
Total estimated assessable street costs: $110,890.00
40% assessed: 40%of$1,203,600=$44,356.00
12 assessable units
$44,356.00± 12 units=$3,696.33/unit**
The estimated assessment lies within the benefit range identified of past consultation reports.
SCHEDULE
The proposed project schedule is as follows:
Public Hearing; Authorize Preparation of Plans and Specifications August 28, 2017
Approve Plans and Specifications; Authorize Advertisement for Bids Dec. 11, 2017
Call Assessment Hearing March, 2018
Assessment Hearing; Accept Bids and Award Contract April, 2018
Start Construction June, 2018
Construction Substantially Complete August, 2018
Attachments: 1. CIP pages
2. Resolution
g:\eng\public\_2018 projects\18-01 orchard lane area recon\communication\20170814 proj 18-01 ph.doc
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ITCapital Improvement Program 2017 rhe r< 2021 Department Street Improvements
City of Chanhassen, MN Contact Paul Ochine
Type Improvement
Project it ST-012 Useful Life Unassigned
Project Name Annual Street Improvement ProgramCategory Streets/Highways 1
Account Mt 601-xxxx-4751 Account tl3 Priority n/a
Account tt2 Account 1/4 ip
Description Total Project Cost: S30,680,000
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 II
MSA-Park Road and Park Place
2018-Orchard Lane area
MSA-Lake Drive East and Dakota Ave(Highway 5 to l..ake Drive East)
2019-Choctaw area,Kurvers Point urea and 96th Street
MSA-Minnewashta Parkway overlay and trail
2020-Chan View area
MSA-Lake Lucy Road(Highway 41 to Galpin Blvd)and trailip
2021 -Stone Creek area and Ches Mar Drivej
Justification
The City uses a Pavement Management System to monitor the condition of the City streets. While proper preventative maintenance extends the
life of the street and is cost elTcctive,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 when utilities or poor sub grade needs to be replaced or where streets have
deteriorated to a point where rehabilitation will no longer be practical,reconstruction of the street is necessary. A feasibility study is written to
consider the merits of the project and scope of work. r
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Prior Expenditures 2017 2018 2019 2020 2021 Total 1111 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 P
16,405,0001 Assessment/Revolving 3,275,000 1,600,000 1,100,000 3,300,000 1,100,000 10,375,000
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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
Budget Impact/Other .. 11
This project may decrease maintenance costs.
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Capital Improvement Program 2017 thru 2021
Department Sanitary Sewer Improvements
City of Chanhassen, MN Contact Paul Qehme
Project N SS-014 Type Improvement
Useful Life Unassigned
Project Name
Sanitary Sewer Replacement Category Utilities
Account ill 701-7025-4751 Account#3 Priority n/a
Account/12 Account#4
Description Total Project Cost: 52,110,000
Replacement or rehabilitation of existing sanitary sewer lines in conjunction with the reconstruction of the City street.
Justification
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.
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
1,300,000 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
Budget Impact/Other
This project will decrease maintenance costs.
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Capital Improvement Program 2017 i/u n 2021
p P Department Surface Water Management
City of Chanhassen, MN Contact Paul Oclime
Type Improvement
Project# SWMP-019
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'
Total Project Cost: $2,685,000
Description '`•
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.
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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.
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Prior Expenditures 2017 2018 2019 2020 2021 Total
[_1,525,0001 Construction 600,000 250,000 80,000 250,000 80,000 1,160,000
Total Total 500,000 250,000 80,000 250,000 80,000 1,160,000
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
Budget Impact/Other ►
Inventory,inspection and maintenance of new infrastructure will be required. Citywide.No map
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Capital Improvement Program 2017 thru 2021
G. Department Water System Improvements
City of Chanhassen,, IVIN Contact Paul°chme
IProject# W-024 Type Improvement
Unita Life Unassigned
Project Name Watermain Replacement
Category Utilities
Il Account#1 700-7025-4751 Account#3 Priority n/a
Account#2 Account#4
Description Total Project Cost; $5,220,000
I Replacement of existing water main lines in coordination with the reconstruction of the City street projects or minor fixes of water distribution
system for street rehabilitation projects.
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Justification
IThe City considers the condition of the existing utilities in the process to selec{streets for rehabilitation in an effort to realize cost savings by
consolidating these projects and also to avoid potential cuts in recently improved streets.If 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
Iproject in the City.
I Prior Expenditures 2017 2018 2019 2020 2021 Total
3;325,000 Construction
75,060 770,000 100,000 850,000 100,000 1,895;000
Total Total 75,000 770,090 100,000 850,600 100,000 1,895,000
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Prior Funding Sources 2017 2018 2019 2020
1 2021 Total
M 3,325,000 Water Utility Fund 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
I Budget Impact/Other
These projects will decrease maintenance costs. ,
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CITY OF CHANHASSEN
CARVER AND HENNEPIN COUNTIES,MINNESOTA
DATE: August 28,2017 RESOLUTION NO: 2017-60
MOTION BY: SECONDED BY:
A RESOLUTION ORDERING IMPROVEMENTS &AUTHORIZING
PREPARATION OF PLANS AND SPECIFICATIONS FOR THE
2018 STREET RECONSTRUCTION (ORCHARD LANE AREA)
PROJECT NO. 18-01
WHEREAS,on August 14,2017,the City Council received the feasibility report for the
2018 Street Reconstruction Project(Orchard Lane Area) and called for the public hearing to be held
on August 28, 2017 for the 2018 Street Reconstruction Project (Orchard Lane area), and
AND WHEREAS,fourteen days'mailed notice and two weeks'published notice of the
hearing was given, and the hearing was held thereon on the 28th day of August,2017 which all
persons desiring to be heard were given an opportunity to be heard thereon.
NOW, THEREFORE,BE IT RESOLVED by the Chanhassen City Council:
1. Such improvement is necessary, cost-effective, and feasible as detailed in the feasibility
report.
2. Such improvement is hereby ordered as proposed in the Council resolution adopted
August 28,2017.
3. Authorizes preparation of plans and specifications for the 2018 Street Reconstruction
(Orchard Lane Area)Project No. 18-01.
Passed and adopted by the Chanhassen City Council this 28th day of August,2017.
ATTEST:
Todd Gerhardt, City Manager Denny Laufenburger,Mayor
YES NO ABSENT
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