HomeMy WebLinkAbout#23 - Water Tower 3 Prelminary Design STAFF REPORT
DATE: December 15, 2020
CONSENT
AGENDA ITEM: Authorize Engineering Services for Water Tower No. 3 Preliminary Design
and Water System Planning/Modeling
SUBMITTED BY: Jack Griffin, City Engineer
REVIEWED BY: Kristina Handt, City Administrator Marty Powers, Public Works Director
Chad Isakson, Assistant City Engineer
ISSUE BEFORE COUNCIL: Should the City Council authorize engineering services for Water Tower
No. 3 Preliminary Design and Water System Planning/Modeling?
BACKGROUND: In accordance with the City’s Capital Improvement Plan, a new water tower (Water
Tower No. 3) is planned for construction in 2022, to be located in the low-pressure zone to support growth
and development beyond the 400 REC unit limitation. Over the past year city staff have been in discussions
with various property owners to identify properties that may be both a suitable location for the water tower
and be available for timely acquisition by the city. Site acquisition is becoming critical and engineering
design services are needed to continue preparing this project for 2022 construction.
In addition, the State of Minnesota Co-Trustees for the 3M Settlement Funds has released its draft Clean
Drinking Water Supply Plan (CDWSP) for City review and comment. While the City has completed its
high -level overview comments, the planning process has revealed that the City’s water distribution system
needs to be reviewed and evaluated in greater detail to fully understand the impacts to the distribution
system, and necessary improvements that may be required by an alternative water source location. The City
has requested the water system model files, in WaterCAD, from Wood LLC (the State’s consultant). Once
received the City will require engineering support services from SEH to review and update with the water
system changes over the past 2 years, and perform various modeling scenarios to review operational
performance and identify system deficiencies.
PROPOSAL DETAILS/ANALYSIS: At this time, the City Engineer is recommending that preliminary
design services be initiated for Water Tower No. 3 to be located within the City’s water system low pressure
zone. More specially, along Lake Elmo Avenue, between I94 and 14th Street North. The scope of work
and associated fees has been developed with SEH as outlined in the attached Task Order No. 11. The
preliminary design services shall aid the in determination of the water storage requirements and tower
sizing, the water tower location for efficient hydraulic operations within the pressure zone, and site
evaluation services to make recommendations regarding the site layout and other siting requirements. The
services outlined in this task order are intended to assist the City to verify the selected water tower site as
the preferred location prior to the city’s acquisition of the property.
The City Engineer is also recommending that professional engineering support services be obtained to
update and calibrate the city’s existing water distribution system hydraulic model, using the base
WaterCAD file prepared by Wood LLC. Once the model has been obtained and verified to reflect updated
existing conditions, water system modeling scenarios will be run to evaluate and make recommendations
for expansion of the water supply system, as necessary, to responsibly and cost-effectively accommodate
future growth, including an evaluation of alternative water supply source locations within the system.
Over the next few years, the City will need to make important decisions related to the future of the City’s
water supply sources, distribution system, and storage facilities. Development and utilization of the updated
water system model will help to make informed decisions related to expected system operations. As part of
the evaluation, the updated water model and corresponding evaluation will explore the viability of potential
water supply options related to alternatives driven by the State’s Clean Drinking Water Supply Plan
(CDWSP) related to 3M Settlement Funds. The scope and effort defined in the attached Task Order No. 12
will support the City in understanding the impacts and changes to the water system plan and will assist in
supporting the City’s effort to advocate for the best alternative(s).
FISCAL IMPACT: $19,000 to complete the Water Tower No. 3 Preliminary Design work, with services
to be charged against the Water Towner No. 3 Improvements. Once completed a Task Order will be
prepared for engineering services for final design and construction support services. $30,600 for Water
System Planning/Modeling, with services to be charged against the Water Enterprise Fund. The City will
be submitting a request to the State of Minnesota Co-Trustees for the 3M Settlement Funds to reimburse
the City for the water planning services, however, no commitments for reimbursement have been made at
this time.
RECOMMENDATION: Staff is recommending that the City Council authorize, as part of the consent
agenda, engineering services for Water Tower No. 3 Preliminary Design and Water System
Planning/Modeling and as outlined in Task Order No. 11 and Task Order No. 12 respectively. If removed
from the consent agenda, the recommended motion for this action is as follows:
“Move to approve engineering services for Water Tower No. 3 Preliminary Design and Water System
Planning/Modeling and as outlined in Task Order No. 11 and Task Order No. 12 respectively.”
ATTACHMENTS:
1. Task Order No. 11 – Water Tower No. 3 Preliminary Design.
2. Task Order No. 12 – Water System Planning/Modeling.
TASK ORDER No. 11 – WATER TOWER NO. 3 PRELIMINARY DESIGN Page 1 of 3
TASK ORDER No. 11
CITY OF LAKE ELMO, MINNESOTA – SHORT ELLIOTT HENDRICKSON, INC.
PROFESSIONAL ENGINEERING SERVICES AGREEMENT
In accordance with ARTICLE 1 of the Master AGREEMENT between the City of Lake Elmo (“CITY”) and
Short Elliott Hendrickson, Inc. (SEH) (“ENGINEER”), dated AUGUST 13, 2014 (“AGREEMENT”), the
ENGINEER agrees to provide Professional Engineering Support Services as follows:
WATER TOWER NO. 3 PRELIMINARY DESIGN
PROJECT OVERVIEW: The City of Lake Elmo requires professional engineering services for the
preliminary design of Water Tower No. 3 to be located within the city’s water system low pressure
zone. The preliminary design services shall aid the in determination of the water storage requirements
and tower sizing, the water tower location for efficient hydraulic operations within the pressure zone,
and site evaluation services to make recommendations regarding the site layout and other siting
requirements. The City is currently searching for a suitable site to acquire for placement of the new
water tower. The services outlined in this task order are intended to assist the city to verify the selected
water tower site as the preferred location prior to the city’s acquisition of the property.
SERVICES TO BE PROVIDED BY ENGINEER: SEH, Inc. shall provide the following Professional
Engineering Services:
Water Tower Sizing, Siting Evaluation & Preliminary Design. The tasks outlined below will verify and
secure the City’s plan to move forward with the prosed water tower site and verify the anticipated
water tower size and operation, so that final design and construction of the tower can proceed.
1. Project Management throughout the course of the work including submittal of a weekly
progress memo and job to date budget form.
2. Meeting: Conduct meeting to review potential water tower sites and size alternatives, Water
Tower Site visit.
3. Develop water tower size and height recommendations based on previous tasks.
4. Meet with city staff to develop site design criteria, miscellaneous project data for development
of schematic plan and cost estimates.
5. Hydraulic Modeling and Storage Determination.
6. Review Tank Operations and needs with City Engineering and Public Works staff.
7. Review and provide recommendations regarding existing PRV station and SCADA system
modifications.
8. Provide Architectural Rendering for one style of water tower located on the proposed site.
Additional renderings, if requested by the city, would be completed as additional services.
9. Preliminary Site Plan Layout.
10. Preliminary Cost/Benefit Estimates for selected Water Tower style and size. Cost estimates for
alternative style and sizes, if requested by the city, would be completed as additional services.
TASK ORDER No. 11 – WATER TOWER NO. 3 PRELIMINARY DESIGN Page 2 of 3
11. Prepare Preliminary Design Memorandum.
12. Private Utility Coordination and Design Locate.
13. Survey Site and other features.
14. Coordinate Soil Boring locations.
15. Review draft report with City and finalize the report.
16. Present the final report to the City.
TIMES FOR RENDERING SERVICES: ENGINEER shall perform its services and provide deliverables in
accordance with the following project schedule:
1. December 15, 2020 – Council approves Task Order to authorize work.
2. The Project schedule will vary and will be dependent upon the identification of various potential
water tower sites by the city that are available for acquisition, and receipt of the WaterCAD
model from the State of Minnesota.
3. Once information becomes available to the ENGINEER, services will proceed diligently through
completion.
CITY’S REPRESENTATIVE AND CONTRACT ADMINISTRATION: The CITY’s representative with respect
to services rendered by ENGINEER under this TASK ORDER shall be the City Engineer. Project
correspondence must be addressed to:
Jack Griffin, P.E., City Engineer
City of Lake Elmo
3800 Laverne Avenue North
Lake Elmo, MN 55042
651.300.4264
Email: Jack.griffin@focusengineeringinc.com
COMPENSATION: Compensation to ENGINEER shall be based on the hourly billing rates for each staff
as assigned and provided in the ENGINEER’s Proposal for the work. Invoices shall be submitted once
each month and should be sent to the attention of the City Engineer.
Compensation to ENGINEER for Preliminary Design Services shall be on an hourly rate basis in a not to
exceed amount of $19,000.
ADDITIONAL SERVICES: If authorized by the City, ENGINEER shall furnish or obtain from others
Additional Services which are not considered under this Task Order. Such services shall be compensated
for on an Hourly Rate basis in an amount approved by the City prior to any services being started or as
otherwise mutually agreed. The City is not obligated to compensate ENGINEER for services completed
outside the approved scope of work which are completed prior to ENGINEER submitting a written
request to the City, and receiving written approval of the City.
TASK ORDER No. 11 – WATER TOWER NO. 3 PRELIMINARY DESIGN Page 3 of 3
ATTACHMENTS: This agreement supersedes and replaces all previous understandings, agreements or
contracts, written or verbal, between ENGINEER and City, regarding the Water Tower No. 3 Preliminary
Design. The following documents are attached for reference:
1. ENGINEER’s Proposal to the CITY dated December 8, 2020.
APPROVAL AND ACCEPTANCE: Approval and Acceptance of this Task Order, including the
attachment(s) listed above, shall incorporate this document as part of the AGREEMENT. ENGINEER is
authorized to begin performance of services upon receipt of a copy of this Task Order signed by CITY.
The Effective Date of this Task Order is December 15, 2020.
SHORT ELLIOT HENDRICKSON, INC. CITY OF LAKE ELMO, MINNESOTA
By _________________________________ By _________________________________
(Authorized Principal of the Firm) City Administrator
SHORT ELLIOTT HENDRICKSON: PROJECT WORK PLAN
PROJECT NAME: Water Model Update and Source Water Modeling
PROJECT NUMBER: LAKMO 123536
CLIENT: City of Lake Elmo, Minnesota
PROJECT MANAGER: Chad T. Katzenberger, PE
TOTAL HOURS 137 31 39 22 36 8 0 1
COST PER HOUR/UNIT (CHARGE-OUT RATE)$159.00 $114.00 $159.00 $141.00 $114.00 $141.00 $80.00
TOTAL LABOR COST $18,941 $4,929.00 $4,446.00 $3,498.00 $5,076.00 $912.00 $0.00 $80.00
% OF TOTAL COST 26.1%23.5%18.5%26.9%4.8%0.0%0.4%
Task
(Phase)Task Description
Chad
Katzenberger
Lead Proj Engr
and PM
Heather Yelle
Lead Water
Modeler
Scott Haupt
Senior Civil
Engineer
Adam Bona
Engineering
Technician
Ryan Hanson
Project
Engineer
Mike
Steuernagel
GIS
Melissa
Blommel
(Admin)
11 Task Order 11 - Water Tower Sizing, Siting Evaluation & Preliminary Desgin
11.01 MEETING: Conduct Meeting to review potential wate tower sites and size alternatives, Water Tower Site Visit 6 4 2 1
11.02 Develop water tower size and height recommendations based on previous tasks 4 4
11.03 Meet with City staff to develop site design critera, misc project data for development of schematic plan and
cost estimates 4 4
11.04 Hydraulic Modeling & Storage Determination 1 4
11.05 Review Tank Operations and Needs with City Eng. & PW Staff 1 3 2
11.06 Review and provide recommendations regarding existing PRV station and SCADA system modifications
11.07 Provide Architectural Rendering for one style of water tower located on the proposed site 1 12 8
11.08 Preliminary Site Plan Layout 4 10
11.09 Preliminary Cost/Benefit Estimates for selected Water Tower style and size. Cost estimates for alternative
style and sizes, if requested by the city, would be completed as additional services.2 4
11.1 Prepare Preliminary Design Report for Council Presentation 4 4
11.11 Private Utility Coord & Design Locate 4 8
11.12 Survey Site 4 16
11.13 Coordinate Soil Borings 1 1 2
11.14 QA/QC 1 2
11.15 Review draft report with City, and finalize the report.2 1
11.16 Present the report to the City staff and provide support 4 2
Task Hour Total 137 31 39 22 36 8 0 1
Total Task 11 $19,000 4,929$ 4,446$ 3,498$ 5,076$ 912$ -$ 80$
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TASK ORDER No. 12 – WATER SYSTEM MODEL DEVELOPMENT AND EVALUATION Page 1 of 4
TASK ORDER No. 12
CITY OF LAKE ELMO, MINNESOTA – SHORT ELLIOTT HENDRICKSON, INC.
PROFESSIONAL ENGINEERING SERVICES AGREEMENT
In accordance with ARTICLE 1 of the Master AGREEMENT between the City of Lake Elmo (“CITY”) and
Short Elliott Hendrickson, Inc. (SEH) (“ENGINEER”), dated AUGUST 13, 2014 (“AGREEMENT”), the
ENGINEER agrees to provide Professional Engineering Support Services as follows:
WATER SYSTEM PLANNING/MODELING
PROJECT OVERVIEW: The City of Lake Elmo requires professional engineering services to update and
calibrate the city’s existing water distribution system hydraulic model, using WaterCAD. Once the
existing model has been developed, professional engineering services shall be provided to evaluate
and make recommendations for expansion of the water supply system, as necessary, to responsibly
and cost‐effectively accommodate future growth, including an evaluation of alternative water supply
source locations within the system.
Over the next few years, the city will need to make important decisions related to the future of the
city’s water supply sources, distribution system, and storage facilities. Development and utilization of
the updated water system model will help to make informed decisions related to expected system
operations. As part of the evaluation, the updated water model and corresponding evaluation will
explore the viability of potential water supply options related to alternatives driven by the State’s Clean
Drinking Water Supply Plan (CDWSP) related to 3M Settlement Funds. Since Lake Elmo is one of 14
different water systems being impacted by the final CDWSP, recommended improvements should be
carefully evaluated to make sure that selected alternatives are in the best interest of the City of Lake
Elmo. The scope and effort defined in this Task Order will support the city in understanding the impacts
and changes to the water system plan and will assist in supporting the city’s effort to advocate for the
best alternative(s).
SERVICES TO BE PROVIDED BY ENGINEER: SEH, Inc. shall provide the following Professional
Engineering Services:
Task 1 – Water Model Review, Update, Development and Verification. The work outlined below will
develop an updated water system model, in WaterCAD, for the city so that advanced water system
questions related to water supply, water quality and future system operations can be addressed. The
model will become a central tool for the overall water system evaluation tasks related to supply,
treatment, and storage. It is the intention to build upon the WaterCAD model prepared by Wood LLC,
as the State’s consultant for the CDWSP.
1. Review existing model and available water system data. Develop a list of questions and data
needed to update the model.
2. Conduct a project kick‐off meeting with key representatives of the city and the SEH project
team. Review overall expectations and schedule for the project.
3. Update Water Model with latest system piping, elevation data, demand data, billing records.
TASK ORDER No. 12 – WATER SYSTEM MODEL DEVELOPMENT AND EVALUATION Page 2 of 4
4. Gather historical water system operational data (Average Summer Week, Average Winter
Week), tabulate and analyze.
5. Develop diurnal demand curves for system pressure zones based on historical water use.
6. Review and verify existing water model operation with real extended period SCADA data (model
verification process).
7. Provide schematic map printouts and data tabulations for city staff review and revisions.
8. Finalize Water System Model Updates.
9. Develop documentation related to model update.
10. Develop standard current water system modeling results maps (Pressure, Fire Flow, EPS Flow
and Pressure).
11. Final Model Update Summary memo.
Task 2 – Future Water System Supply and Treatment Alternative Evaluation & on call water modeling
services. The work outlined below will utilize the updated water model to evaluate potential water
supply and distribution alternatives. In addition, long term water system expansion recommendations
will be provided.
1. Request information on all existing water system facilities and proposed 5‐year Capital
Improvement Plan (CIP) projects.
2. Prepare a schematic of the overall water system(s).
3. Perform a water supply analysis to determine the capacity of the groundwater wells to provide
current and future water needs and to identify any shortfalls.
4. Evaluate the capacities of the booster pumping facility to ensure that it has adequate capacities
to provide water to customers throughout the service area.
5. Using future land use map ‐ Develop Ultimate Water System model for future supply scenarios.
6. Using EPS Water Supply Simulation evaluate ability of Water System to Supply System Demands
through 2040 from Internal Groundwater sources.
7. Using EPS Water Supply Simulation evaluate ability of Water System to Supply System Demands
through 2040 from supply from Woodbury.
8. Meet with city staff to present the identified water system deficiencies and solicit input on
proposed improvement alternatives.
9. Identify improvements to the water distribution system to ensure that adequate water can be
transmitted to customers at required flows and pressures. This will include both the existing
water distribution system and expansion of the water distribution system to serve areas of new
development.
10. Prepare a map of water age and identify points or areas of oldest water under various seasonal
pumping scenarios.
11. Additional On‐Call Water Modeling Services and Modeling Support (as questions arise).
TIMES FOR RENDERING SERVICES: ENGINEER shall perform its services and provide deliverables in
accordance with the following project schedule:
TASK ORDER No. 12 – WATER SYSTEM MODEL DEVELOPMENT AND EVALUATION Page 3 of 4
1. December 15, 2020 – Council approves Task Order to authorize work.
2. The Project schedule will vary and will be dependent upon the identification of various potential
water tower sites by the city that are available for acquisition, and receipt of the WaterCAD
model from the State of Minnesota.
3. Once information becomes available to the ENGINEER, services will proceed diligently through
completion.
CITY’S REPRESENTATIVE AND CONTRACT ADMINISTRATION: The CITY’s representative with respect
to services rendered by ENGINEER under this TASK ORDER shall be the City Engineer. Project
correspondence must be addressed to:
Jack Griffin, P.E., City Engineer
City of Lake Elmo
3800 Laverne Avenue North
Lake Elmo, MN 55042
651.300.4264
Email: Jack.griffin@focusengineeringinc.com
COMPENSATION: Compensation to ENGINEER shall be based on the hourly billing rates for each staff
as assigned and provided in the ENGINEER’s Proposal for the work. Invoices shall be submitted once
each month and should be sent to the attention of the City Engineer.
Compensation to ENGINEER for Preliminary Design Services shall be on an hourly rate basis in a not to
exceed amount of $30,600.
ADDITIONAL SERVICES: If authorized by the City, ENGINEER shall furnish or obtain from others
Additional Services which are not considered under this Task Order. Such services shall be compensated
for on an Hourly Rate basis in an amount approved by the City prior to any services being started or as
otherwise mutually agreed. The City is not obligated to compensate ENGINEER for services completed
outside the approved scope of work which are completed prior to ENGINEER submitting a written
request to the City, and receiving written approval of the City.
ATTACHMENTS: This agreement supersedes and replaces all previous understandings, agreements or
contracts, written or verbal, between ENGINEER and City, regarding the Water System Model
Development and Evaluation. The following documents are attached for reference:
1. ENGINEER’s Proposal to the CITY dated December 8, 2020.
TASK ORDER No. 12 – WATER SYSTEM MODEL DEVELOPMENT AND EVALUATION Page 4 of 4
APPROVAL AND ACCEPTANCE: Approval and Acceptance of this Task Order, including the
attachment(s) listed above, shall incorporate this document as part of the AGREEMENT. ENGINEER is
authorized to begin performance of services upon receipt of a copy of this Task Order signed by CITY.
The Effective Date of this Task Order is December 15, 2020.
SHORT ELLIOT HENDRICKSON, INC. CITY OF LAKE ELMO, MINNESOTA
By _________________________________ By _________________________________
(Authorized Principal of the Firm) City Administrator
SHORT ELLIOTT HENDRICKSON: PROJECT WORK PLAN
PROJECT NAME: Water Model Update and Source Water Modeling
PROJECT NUMBER: LAKMO 123536
CLIENT: City of Lake Elmo, Minnesota
PROJECT MANAGER: Chad T. Katzenberger, PE
TOTAL HOURS 244 41 165 12 0 8 15 3
COST PER HOUR/UNIT (CHARGE-OUT RATE)$159.00 $114.00 $159.00 $141.00 $114.00 $141.00 $80.00
TOTAL LABOR COST $30,504 $6,519.00 $18,810.00 $1,908.00 $0.00 $912.00 $2,115.00 $240.00
% OF TOTAL COST 21.4%61.7%6.3%0.0%3.0%6.9%0.8%
Task
(Phase)Task Description
Chad
Katzenberger
Lead Proj Engr
and PM
Heather Yelle
Lead Water
Modeler
Scott Haupt
Senior Civil
Engineer
Adam Bona
Engineering
Technician
Ryan Hanson
Project
Engineer
Mike
Steuernagel
GIS
Melissa
Blommel
(Admin)
12 Task 12.1 – Water Model Update and Preliminary Planning
12.01 Review existing model and available water system GIS data. Develop a list of questions and data needed to
update the model 2 4
12 MEETING: Conduct a project kick-off meeting with key representatives of the City and the SEH project team.
Review overall expectations and schedule for the project.8 8 2 2 1
12 Update Water Model with latest system piping, elevation data, demand data, billing records.8 4
12 Gather historical water system operational data - (Average Summer Week, Average Winter Week), Tabulate
and analyze 1 8
12 Develop diurnal demand curves for system pressure zones based on historical water system data 2 16
12 Review and verify existing water model operation with real extended period SCADA data - Model verification
Process 2 10 1
12 Finalize Water System Model Updates 1 8
12 Develop documentation related to model update 1 2
12 Develop standard current water system modeling results maps (Pressure, Fire Flow, EPS Flow and Pressure)8 2
12 Final Model Update Summary memo 1 4 1
Deliverables: Updated water model, memo, figures 4 4 1
Task Hour Total 116 22 80 4 0 2 6 2
Task Cost $14,500 3,498$ 9,120$ 636$ -$ 228$ 846$ 160$
12 Task 12.2 – Future Water System Supply Source Evaluation & On Call Water Modeling Services
2.01 Request information on all existing water system facilities and proposed 5-year Capital Improvement Plan
(CIP) projects thru the City Engineer.0.5 1
2.02 Prepare a schematic of the overall water system (s)4
2.03 Perform a water supply analysis to determine the capacity of the groundwater wells to provide current and
future water needs and to identify any shortfalls.2 2 2
2.04 Evaluate the capacities of the booster pumping facility to ensure that it has adequate capacities to provide
water to customers throughout the service area.0.5 1
2.05 Using future land use map - Develop Ultimate Water System model for future supply scenarios 6 2
2.06 Using EPS Water Supply Simulation valuate ability of Water System to Supply System Demands Through
2050 from Internal Groundwater sources 6 2
2.07 Using EPS Water Supply Simulation valuate ability of Water System to Supply System Demands Through
2050 from supply froom Woodbury 1 8 4 1
2.08 MEETING: Conduct a workshop with City staff to present the identified water system deficiencies, and solicit
their input on proposed improvements.6 4 2 1
2.09
Identify improvements to the water distribution system to ensure that adequate water can be transmitted to
customers at required flows and pressures. This will include both the existing water distribution system and
expansion of the water distribution system in areas of new development.
1 6 1
2.10 Prepare a map of water age, and identify points or areas of oldest water under various seasonal pumping
scenarios 8 2
2.11 Additional On Call Water Modeling Services and Modeling Support 8 40 4 2
Task Hour Total 128 19 85 8 0 6 9 1
Task Cost $16,000 3,021$ 9,690$ 1,272$ -$ 684$ 1,269$ 80$
Total Task 12 $30,600 $6,519 $18,810 $1,908 $0 $912 $2,115 $240
Existing Water System Facilities
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