HomeMy WebLinkAboutItem 10 - Well 4 Connecting Watermain Improvements-Feasibility Report-FINAL WATERMAIN IMPROVEMENTS
FEASIBILITY REPORT
THE CIT'V WELL NO. 4 CONNECTING
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CITY OF LAKE ELMO, MN.
Project No. 2013.131
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CERTIFICATION
FEASIBILITY REPORT
WELL NO. 4 CONNECTING
WATERMAIN IMPROVEMENTS
THE CITY OF LAKE ELMO, MINNESOTA
SEPTEMBER 2013
Lake Elmo Project No: 2013.131
1 hereby certify that this plan, specification, or report was prepared by me, or under
my direct supervision, and that I am a duly Licensed Professional Engineer under the
laws of the State of Minnesota.
Chad J. Isakson I License No. 49028 1 September 3, 2013
651.300.4283
FOCUS Engineering, inc.
www.FOCUSengineeringinc.com
WELL NO. 4 CONNECTING WATERMAIN IMPROVEMENTS
CITY OF LAKE ELMO PROJECT NO: 2013.131
TABLE OF CONTENTS
PAGE NO.
EXECUTIVESUMMARY..............................................................................................................3
SECTION I. PROJECT INITIATION AND SCOPE..............................................................................4
SECTION II. PROJECT AREA CHARACTERISTICS.............................................................................4
SECTION III. PROPOSED WATER SYSTEM IMPROVEMENTS............................................................5
SECTION IV. IMPACTS OF PROPOSED IMPROVEMENTS.................................................................5
SECTION V. RIGHT-OF-WAY AND EASEMENTS.............................................................................6
SECTION VI. PERMITS AND APPROVALS.......................................................................................6
SECTION VII. SUMMARY OF ESTIMATED PROJECT COSTS...............................................................6
SECTION VIII. FINANCING OF IMPROVEMENTS ..............................................................................7
SECTION IX. PROJECT SCHEDULE ................................................................................................9
SECTION X. CONCLUSIONS AND RECOMMENDATIONS .............................................................. 10
APPENDIX
PAGES
FIGURE 1: LOCATION MAP.............................................................................................................................1
FIGURE 2: PROPOSED WATERMAIN IMPROVEMENTS...................................................................................1
ENGINEER'S PRELIMINARY ESTIMATE OF COST..............................................................................................1
PRELIMINARY ASSESSMENT ROLL...................................................................................................................1
ASSESSMENT PAYMENT SCHEDULE................................................................................................................1
City of Lake Elmo, MN. Project No: 2013.131
Well No.4 Connecting Watermain Improvements PAGE 2
WELL NO. 4 CONNECTING
WATERMAIN IMPROVEMENTS
CITY OF LAKE ELMO PROJECT NO. 2013.131
EXECUTIVE SUMMARY
This feasibility report has been prepared in accordance with the City of Lake Elmo Capital Improvement
Plan (CIP) to address trunk watermain improvements necessary to connect a new municipal water
supply well, Well No. 4, to the existing water distribution system. The project is currently scheduled in
the CIP for construction in 2014. This report was prepared at the direction of the City Council to be in
accordance with Minnesota State Statutes 429 in order to consider the assessment of a portion of the
improvements to properties adjacent to and benefitting from these improvements.
The proposed improvements include the extension of trunk watermain facilities along 50th Street North
and Lake Elmo Avenue, from 50th Street N. to 43rd Street N., in order to connect Well No. 4 to the
water distribution system. Individual service stubs will be installed to properties with existing homes
that are located adjacent to the watermain improvements. Fire hydrants will be installed along the
corridor, providing increased fire suppression capabilities in the area. Ten (10) properties have been
identified that will benefit from these improvements by providing them the opportunity to connect to
the municipal water system. Additional benefit will be realized through lower homeowner's insurance
premiums due to the enhanced fire protection for the property.
The total estimated project cost for this improvement is $617,000. This project is being installed as a
part of the overall water system and not as a project to specifically deliver municipal water to the
adjacent properties. Therefore the adjacent properties are not required to pay 100% of the
infrastructure extension costs as is seen in other utility extension projects. However, the properties will
receive benefit from the improvements and it is therefore recommended that each benefiting property
be assessed a $5,800 lateral benefit for the improvements.
Project cost details are included in the Appendix. The recommended Project Improvements are
necessary, cost-effective, and feasible and will result in a benefit to the properties proposed to be
assessed. It is recommended that the City Council accept this Report, hold the public hearing, and order
the improvements.
City of Lake Elmo, MN. Project No: 2013.131
Well No.4 Connecting Watermain Improvements PAGE 3
I. PROJECT INITIATION AND SCOPE
This project was initiated as a part of the City's Water Capital Improvement Plan (CIP) in order to
connect Well No. 4 to the existing water distribution system. The City Council authorized the
preparation of the feasibility report for the Well No. 4 Connecting Watermain Improvements on August
6, 2013. Staff was directed to identify properties along the project corridor that may benefit from the
improvements and to recommend potential assessments accordingly.
Well No. 4 will be the second high capacity well (1,250 Gallons per Minute) supplying water to the City's
municipal water system. The well is necessary to meet the growth demands of the City and to provide
backup firm capacity to Well No. 2. The well is currently being drilled and developed by Keys Well
Drilling Company and is anticipated to be complete in the fall of 2013.The extension of trunk watermain
along 50th Street N. and Lake Elmo Avenue, from 50th Street N. to 43rd Street N. is necessary to connect
Well No. 4 to the City's municipal water distribution system.
This Report is a desktop study, based on record drawings, aerial photography, aerial contours,
Washington County plat records, and city utility maps. A visual observation and condition assessment
was completed to review the preliminary routing. Topographic surveys were not completed as part of
this report and will be required to confirm the viability of the watermain pipe route and to further detail
project costs.
II. PROJECT AREA CHARACTERISTICS
In 2011 and 2012 City staff conducted a site acquisition study to identify properties that would be
suitable and potentially available for acquisition, for a municipal water supply well. This study resulted in
the purchase of approximately 1.4 acres of property along 50th Street North, just east of Lake Elmo
Avenue.The well site was located further north than originally anticipated by the CIP to protect the well
capture zone from groundwater contamination plumes generated from the Washington County landfill.
However, by moving the well further away from the existing water distribution system, additional trunk
watermain was needed to complete the necessary connection near the intersection of Lake Elmo
Avenue and 43rd Street N.
The location of the Well No. 4 connecting trunk watermain will be placed along the shoulder of 50th
Street N. and Lake Elmo Avenue. Lake Elmo Avenue is owned and maintained by Washington County
with the topography along this corridor generally sloping away from the roadway. 50th Street N. is a city
City of Lake Elmo, MN. Project No: 2013.131
Well No.4 Connecting Watermain Improvements PAGE 4
owed street. Both roadway pavements are in good condition with neither roadway scheduled for
reconstruction in the next 10 years.
III. PROPOSED WATER SYSTEM IMPROVEMENTS
The proposed water system improvements include the extension of a 12-inch trunk watermain line from
the Well No. 4 site to the intersection of 43rd Street and Lake Elmo Avenue. The improvement includes
approximately 4,500 feet of watermain, 10 residential service stubs, 9 hydrant assemblies, and 19 gate
valves. The watermain will be installed using directional drilling to minimize disruption to the existing
roadway pavements and minimize costs.
The specific trunk watermain alignment will be determined during the design phase resulting in a route
that seeks to minimize impacts to utilities, roadway pavement impacts, and tree loss. Hydrants and
valves will be located strategically to minimize the number required while providing a functional and
efficient operating system. Public Works staff and the Lake Elmo Fire Chief will be consulted for the
placement of these appurtenances. The project would extend a service connection pipe to the property
line, or edge of right-of-way, of ten (10) properties with an existing home and abutting the proposed
improvements. Properties on the opposite side of the road from the watermain will have service stubs
installed by boring the pipe under the road. Properties that choose to connect to the system will be
responsible for the private water service line from the right-of-way to their home.
IV. IMPACTS OF PROPOSED IMPROVEMENTS
The proposed watermain extension will complete a critical connection of Well No. 4 to the City's water
supply system. A new well is critical for the City to be able to add new customers and support the
protected growth and development in the Village and 194 corridor areas. Without this connection the
City will continue to rely on Well No. 2 as the only supply well, without backup or redundancy.
Should a construction project be pursued as recommended, short-term traffic delays, construction dust
and noise, minor tree loss, and erosion will occur during construction of the improvements. Efforts to
minimize these impacts include proper construction traffic signage, restriction of work hours and
implementation of dust and erosion control measures. Construction impacts can be mitigated through
the use of proper construction specifications and best management practices. The project as proposed
will be mostly installed with trenchless technology and will therefore result in minimal disturbance to
existing surface conditions throughout the length of the project. Any disruptions that occur along the
City of Lake Elmo, MN. Project No: 2013.131
Well No.4 Connecting Watermain Improvements PAGE 5
existing corridor will be restored consistent with general construction practices, however it is not always
possible to restore to pre-existing conditions.
V. RIGHT-OF-WAY AND EASEMENTS
All improvements are proposed within the existing City or County right-of-way or prescriptive
easements. A County right-of-way permit will be required to facilitate the project as proposed. It
appears that no additional easements will be required.
VI. PERMITS AND APPROVALS
The following permits will be required to implement the proposed improvements:
• Minnesota Department of Health (MDH)Watermain Extension Permit.
• Washington County Right-of-Way Permit.
VII. SUMMARY OF ESTIMATED PROJECT COSTS
Included in the Appendix is the detailed estimate of probable Project costs including construction,
engineering, geotechnical investigations, and contingencies. No allowance has been provided for
easement and right-of-way. A 4% allowance is included for legal, fiscal and administration costs;
however these actual costs should be further estimated by the City finance staff.
These cost estimates are based on recent construction projects of similar character and assume that the
proposed improvements would begin in 2014. The actual project costs will be determined through a
competitive bidding process and will vary with market conditions at the time of the bid.
Total estimated project cost for the Well No. 4 Connecting Watermain Improvements Project:
• 12-INCH DIAMETER TRUNK WATERMAIN EXTENSION $617,000
City of Lake Elmo, MN. Project No: 2013.131
Well No.4 Connecting Watermain Improvements PAGE 6
VIII. FINANCING OF IMPROVEMENTS
This project will be funded through a combination of the City's Water Enterprise Fund, the $1.0 million
DEED Water System Grant, and special assessments. Because the proposed project serves the entire
water supply system, and therefore all existing and future users of the City water supply, the project is
considered CORE Water Infrastructure and is funded through the Water Enterprise Fund. The City
collects Water Availability Charges and Water Connection Charges from each user connecting to the
system to pay for CORE water infrastructure improvements, either directly or through bond repayments.
This project will also be partially funded through the City's $1.0 million DEED Water System Grant. The
City has received a $1.0 million matching grant to spend on municipal water system infrastructure, with
all expenditures to be made by December 31, 2014. The City must expend an additional $1.0 million
from the Water Enterprise Fund to match the grant contribution. This project, together with the Keats
Trunk Watermain, Production Well No. 4 and Pumphouse No. 4 combine for over $2.0 million in water
system improvements.
In addition to the above funding sources, it is recommended that the City impose special assessments
against the properties benefiting from the improvements. Special assessments are levied in accordance
with Minnesota Statutes Chapter 429 and the City of Lake Elmo Special Assessment Policy. Following the
assessment policy, the City Council should consider levying a lateral benefit charge of$5,800 to each of
the existing housing units that are provided a water service stub. The $5,800 lateral benefit charge is
the current charge on the 2013 City Fee Schedule. Consideration should be given to assessing a lateral
benefit charge whether or not the property chooses to connect to City water. When a property connects
to City water, they must also pay a $3,000 Water Availability Charge (WAC), a $1,000 Water Connection
Charge, and a $300 Meter Fee.
In the past year, the City ordered the Keats Trunk Watermain Improvements and following testimony
from the property owners, the City Council chose to levy a $2,900 assessment at the time of the project
while deferring the remaining $2,900 (from the $5,800 lateral benefit charge) until the property choose
to connect to the system. If a property never connects the City must fund the remaining$2,900 amount.
City of Lake Elmo, MN. Project No: 2013.131
Well No.4 Connecting Watermain Improvements PAGE 7
The total estimated project costs are listed below for the recommended improvements with staff
recommendation to assess a $5,800 lateral benefit charge:
ASSESSMENT OPTION 1:
Total Estimated Water DEED Grant Special
Proposed Improvement Project Costs Enterprise Fund Funds Assessments
(10 at$5,800 ea.)
Watermain Improvements $617,000 $307,000 $252,000 $58,000
Alternatively, the total estimated project costs are listed below for the recommended improvements
with a $2,900 assessment at the time of the project, and deferring the remaining $2,900 until the time
of connection:
ASSESSMENT OPTION 2:
Total Estimated Water DEED Grant Special
Proposed Improvement Assessments
Project Costs Enterprise Fund Funds
(10 at$2,900 ea.)
Watermain Improvements $617,000 $336,000 $252,000 $29,000
The City may use fund reserves or bonds for the Project improvements to pay the up-front project costs
and to cover City cost participation. Special assessments would be levied against the benefiting
properties with payment terms structured so that the City receives funds to meet debt obligations. If
bonds are sold to finance the improvements, the interest rate on the assessment would be charged at
the coupon rate plus 2%. If no bonds are sold, the interest rate would be set at the rate allowed by
State law.
It is recommended that the watermain improvements be levied over a 15-year period. Assuming an
assessment is levied in the amount at 4.5% interest, the property owner, if they choose to finance the
assessment, would be required to pay an estimated annual payment as shown in the Assessment
Payment Schedule included in the Appendix.
City of Lake Elmo, MN. Project No: 2013.131
Well No.4 Connecting Watermain Improvements PAGE 8
IX. PROJECT SCHEDULE
The following schedule is proposed in order to construct these improvements in 2014.
August 6, 2013 Lake Elmo Council orders preparation of Feasibility Report
September 3, 2013 Lake Elmo Council accepts report and calls for Hearing on Improvements to
be held October 1, 2013
September, 2013 Resident Project Information Meeting—Preliminary Report Findings
October 1, 2013 Lake Elmo Public Improvement Hearing. Council passes resolution ordering
Improvement
January 21, 2014 Presentation of Plans and Specifications. Council Approves Plans and
Specifications and Orders Advertisement for Bids
February 20, 2014 Receive Contractor Bids
March 4, 2014 City Council accepts bids and awards Contract
March-September, 2014 Construction of Improvements
City of Lake Elmo, MN. Project No: 2013.131
Well No.4 Connecting Watermain Improvements PAGE 9
X. CONCLUSIONS AND RECOMMENDATIONS
The City is in need of a second Water Supply Well to meet current and projected demands on the City
water system. Production Well No. 4 is currently under construction and will be completed in November
2013. A trunk watermain extension is needed to connect Well No. 4 to the existing distribution system.
The trunk watermain extension project proposed within this report, along 501h Street N. and Lake Elmo
Avenue, identifies the least cost alternative for making this improvement. Service stubs are
recommended to be extended to property lines along the utility corridor as presented in this report.The
trunk watermain extension project, as proposed, is technically and financially feasible, is necessary, cost-
effective, and will result in a benefit to the properties proposed to be assessed. It is recommended that
the City Council accept this Report, hold the public hearing, and order the improvements.
City of Lake Elmo, MN. Project No: 2013.131
Well No.4 Connecting Watermain Improvements PAGE 10
APPENDIX
PROJECT
LOCATION
50TH STIR EE
W
43R STREET
0
C
0 1000 2000
Feet
FIGURE NO. I
FOCUSPROJ. 2013.131
LAKE ELMO,MINNEINNESOTA LOCATION MAP
ENGINEERING SEPTEMBER,2013 WELL NO.4 CONNECTING
WATERMAIN IMPROVEMENTS
a f
WATERMAIN 1p W
EXTEND 42-INCH TkQiv
NO.
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LEGEND
PROPOSED WATERMAIN
PROPOSED WATERMAIN SERVICE STUB
PROPOSED HYDRANT
0 500 1000
XXXX ASSESSABLE PROPERTY Feet
FIGURE NO.2
FOCUSPROJ. 2013.131
LAKE ELMO,MINNEINNESOTA PROPOSED WATERMAIN IMPROVEMENTS
ENGINEERING WELL NO.4 CONNECTING
SEPTEMBER,2013 WATERMAIN IMPROVEMENTS
WELL NO.4 CONNECTING WATERMAIN IMPROVEMENTS F O C u S ENGINEERING, Inc.
CITY OF LAKE ELMO,MINNESOTA
PROJECT NO.2013.131
ENGINEER'S OPINION OF PROBABLE COST
12-INCH TRUNK WATERMAIN EXTENSION
DATE: SEPTEMBER 2013
Item Description Quantity Unit Unit price Total Cost
1 MOBILIZATION 1.00 LS $22,000.00 $22,000
2 TRAFFIC CONTROL 1.00 LS $10,500.00 $10,500
3 CONNECT TO EXISTING WATERMAIN 2.00 EA $3,500.00 $7,000
4 12"HDPE WATERMAIN,INSTALLED BY HDD 4,400.00 LF $60.00 $264,000
5 16"HDPE WATERMAIN,INSTALLED BY HDD 50.00 LF $110.00 $5,500
6 6"DIP,CL.52 WATERMAIN 180.00 LF $31.00 $5,580
7 1"TYPE"K"COPPER WATER SERVICE 500.00 LF $21.00 $10,500
8 1"CORPORATION STOP W/FUSABLE SADDLE 10.00 EA $220.00 $2,200
9 1"CURB STOP WITH BOX 10.00 EA $280.00 $2,800
10 6"HYDRANT ASSEMBLY(8'-6"BURY) 9.00 EA $3,750.00 $33,750
11 6"RES.SEAT GATE VALVE&BOX 9.00 EA $1,200.00 $10,800
12 12"RES.SEAT GATE VALVE&BOX 9.00 EA $2,900.00 $26,100
13 16"BUTTERFLY VALVE&BOX 1.00 EA $3,200.00 $3,200
14 MJ DIP COMPACT FITTINGS 2,615.00 LB $5.80 $15,167
15 BORING PIT RESTORATION TO EXISTING CONDITIONS 1.00 LS $39,350.00 $39,350
16 TOPSOIL 72.00 CY $14.00 $1,008
17 SOD 550.00 SY $2.75 $1,513
18 OFF ROAD STRUCTURE MARKER 26.00 EA $100.00 $2,600
Subtotal Estimated Construction Cost: $464,000
Contingencies: $46,000
Easement and Right-of-way Acquisition: $0
Engineering Services(Report,Design and Construction Administration): $58,000
Full-Time Construction Observation: $23,000
Geotechnical Engineering: $7,000
Legal,Fiscal and Administration: $19,000
Total Estimated Project Cost: $617,000
*The estimated costs are according to average prices received on similar projects in other areas.The actual costs for this project will be determined through a
bidding process and can vary with market conditions at the time of the bid.
City of Lake Elmo,MN Project No.2013.131
Well No.4 Connecting Watermain Improvements PAGE 1
CITY OF LAKE ELMO, MN. WELL NO.4 CONNECTING WATERMAIN IMPROVEMENTS PAGE 1 of 1
SEPTEMBER 2013 PRELIMINARY ASSESSMENT ROLL
NO. NAME ADDRESS PID UNITS
1 ROBERTS SAXE G&B CHRISTINA 11165 50TH ST N LAKE ELMO 55042 1202921220002 1
2 GLCJ PROPERTIES LLC 11050 50TH ST N LAKE ELMO 55042 102921330003 1
3 BREADY MARY B&KATHRYN M FLICEK 4890 LAKE ELMO AVE N LAKE ELMO 55042 1102921110005 1
4 DAY JACQUELYN L&KEVIN K 4779 LAKE ELMO AVE N LAKE ELMO 55042 1202921220005 1
5 REINHARDT MICHAEL C&AMY L 4690 LAKE ELMO AVE N LAKE ELMO 55042 1102921140005 1
6 SLINGER DONALD L&JERELYN J 4620 LAKE ELMO AVE N LAKE ELMO 55042 1102921140004 1
7 WILLIAMS DOUGLAS C&MARY F&MARY F COUNTRYMAN-WI 4596 LAKE ELMO AVE N LAKE ELMO 55042 1102921140001 1
8 HOFFMAN RICHARD J&NANCY L 4550 LAKE ELMO AVE N LAKE ELMO 55042 1102921140006 1
9 SCHMIDT MARGARET ANN TRS&ANTHONY&MARGARET SC 4525 LAKE ELMO AVE N LAKE ELMO 55042 1202921230005 1
10 ABBOTT ROY E&LAURA A 4455 LAKE ELMO AVE N LAKE ELMO 55042 1202921320002 1
TOTAL 10
ASSESSMENT PAYMENT SCHEDULE
Interest Rate 4.50%
Original Years 15
Remaining Years 15
Year Started 2014
Beginning Balance 5,800.00
YEAR BEGINNING ANNUAL ANNUAL ANNUAL ENDING
PRINCIPAL PRINCIPAL INTEREST TOTAL PRINCIPAL
2014 $ 5,800.00 $ 386.67 $ 316.06 $ 702.73 $ 5,413.33
2015 $ 5,413.33 $ 386.67 $ 243.60 $ 630.27 $ 5,026.67
2016 $ 5,026.67 $ 386.67 $ 226.20 $ 612.87 $ 4,640.00
2017 $ 4,640.00 $ 386.67 $ 208.80 $ 595.47 $ 4,253.33
2018 $ 4,253.33 $ 386.67 $ 191.40 $ 578.07 $ 3,866.67
2019 $ 3,866.67 $ 386.67 $ 174.00 $ 560.67 $ 3,480.00
2020 $ 3,480.00 $ 386.67 $ 156.60 $ 543.27 $ 3,093.33
2021 $ 3,093.33 $ 386.67 $ 139.20 $ 525.87 $ 2,706.67
2022 $ 2,706.67 $ 386.67 $ 121.80 $ 508.47 $ 2,320.00
2023 $ 2,320.00 $ 386.67 $ 104.40 $ 491.07 $ 1,933.33
2024 $ 1,933.33 $ 386.67 $ 87.00 $ 473.67 $ 1,546.67
2025 $ 1,546.67 $ 386.67 $ 69.60 $ 456.27 $ 1,160.00
2026 $ 1,160.00 $ 386.67 $ 52.20 $ 438.87 $ 773.33
2027 $ 773.33 $ 386.67 $ 34.80 $ 421.47 $ 386.67
2028 $ 386.67 $ 386.67 $ 17.40 $ 404.07 $ (0.00)
$ 5,800.00 $ 2,143.06 $ 7,943.06
First year interest calculated from October 15, 2014 through December 31, 2015
Page 1