HomeMy WebLinkAbout5G Sanitary Sewer Report
Phone 952.447.9800 / Fax 952.447.4245 / www.cityofpriorlake.com
4646 Dakota Street SE
Prior Lake, MN 55372
CITY COUNCIL AGENDA REPORT
MEETING DATE: APRIL 10, 2017
AGENDA #: 5G
PREPARED BY: JASON WEDEL, INTERIM PUBLIC WORKS DIRECTOR
PRESENTED BY: JASON WEDEL
AGENDA ITEM: CONSIDER APPROVAL OF A RESOLUTION AWARDING CONTRACTS
TO COMPLETE THE COMPREHENSIVE SANITARY SEWER PLAN AS
PART OF THE 2040 COMPREHENSIVE PLAN UPDATE
DISCUSSION: Introduction
The purpose of this agenda report is to consider approval of a resolution
approving the selection of Stantec to complete the Sanitary Sewer chapter
as part of the 2040 Comprehensive Plan update and authorizing the Mayor
and City Manager to enter into the City’s Standard Agreement for
Professional Services with Stantec.
History
All cities, counties, and townships within the seven-county metropolitan
region must prepare a comprehensive plan and update that plan as
needed every 10 years. Included in that plan is a chapter on our sanitary
sewer system. The last time the City updated our sanitary sewer system
plan was in 2005.
Current Circumstances
The City has experienced significant growth since 2005, so in addition to
meeting the requirements of the Met Council 2040 Comprehensive Plan
update this is also a good time to evaluate our existing system.
The City does not currently have a model of our entire sanitary sewer
system. Historically we have looked at specific segments of the system
and reviewed capacity on a segment by segment basis. Included in the
proposal from Stantec is the creation of a system wide model. This tool will
be especially useful as the City evaluates new developments being
proposed, particularly if the development involves a change in the land use
from what was originally anticipated.
Stantec’s original proposal assumed that the City had an existing model in
place that they would just need to update. This discrepancy was
discovered during the review of the proposals and Stantec was notified of
the mistake and allowed to update their proposal accordingly to include the
creation of a new model from scratch. Stantec provided an update to their
proposal that included the correct scope of work.
2
Conclusion
Staff sent out Requests for Proposals to complete the Sanitary Sewer Plan
to three firms on February 16, 2017. Three responses were received and
evaluated by staff. The proposed fees ranged from $48,500 to $81,631.
ISSUES: The proposed project team from Stantec is experienced with the type of
work required to complete the plan update, including the creation of the
model.
FINANCIAL
IMPACT:
Financial impacts include consulting costs and city staff time dedicated to
supporting the Sanitary Sewer Planning components of the 2040
Comprehensive Plan Update. Stantec has provided an amended not to
exceed cost of $48,500. The costs will be paid with funds from the Trunk
Sanitary Sewer fund.
ALTERNATIVES: 1.Motion and a second, as part of the consent agenda, to approve a
resolution approving the selection of a consultant to complete the
Sanitary Sewer chapter as part of the 2040 Comprehensive Plan
Update.
2.Remove this item from the consent agenda for additional
discussion.
RECOMMENDED
MOTION:
Alternative #1
ATTACHMENTS: 1.Request for Proposals
2.Stantec Proposal and Amendment
4646 Dakota Street SE
Prior Lake, MN 55372
RESOLUTION 17-___
A RESOLUTION APPROVING THE SELECTION OF A CONSULTANT TO COMPLETE THE
SANITARY SEWER CHAPTER AS PART OF THE 2040 COMPREHENSIVE PLAN UPDATE
Motion By: Second By:
WHEREAS, City staff sent a Request for Proposals that defined the major responsibilities,
scope of work and project schedule replated to the completion of the Sanitary
Sewer chapter as part of the 2040 Comprehensive Plan Update to three firms; and
WHEREAS, Three proposals were received; and
WHEREAS, City staff is recommending that the City Council select Stantec at a cost of $48,500;
and
WHEREAS, The Prior Lake City Council has considered the reccomendations of City staff and
has selected Stantec to complete the Sanitary Sewer chapter as part of the 2040
Comprehensive Plan Update.
NOW THEREFORE, BE IT HEREBY RESOLVED BY THE CITY COUNCIL OF PRIOR LAKE,
MINNESOTA as follows:
1. The recitals set forth above are incorporated herein.
2. Stantec is hearby selected to complete the Sanitary Sewer chapter as part of the
2040Comprehensive Plan Update.
3. The Mayor and City Manager are hereby authorized to execute a Standard Agreement for
Professional Services with Stantec.
Passed and adopted by the Prior Lake City Council this 10th day of April, 2017
VOTE Briggs McGuire Thompson Braid Burkart
Aye ☐ ☐ ☐ ☐ ☐
Nay ☐ ☐ ☐ ☐ ☐
Abstain ☐ ☐ ☐ ☐ ☐
Absent ☐ ☐ ☐ ☐ ☐
______________________________
Frank Boyles, City Manager
REQUEST FOR PROPOSAL
SANITARY SEWER SYSTEM PLAN UPDATE
Proposals are due
March 17, 2017
4:00 p.m.
REQUEST FOR PROPOSALS
PROFESSIONAL ENGINEERING SERVICES
SANITARY SEWER SYSTEM PLAN UPDATE
2
PROJECT BACKGROUND
Prior Lake is a city located in Scott County on the southwest edge of the Twin Cities metro area. The City
encompasses 19 square miles of land, and is home to approximately 25,000 residents. The City is part of
the Metropolitan Council Planning Area and will be updating the Comprehensive Plan in the near future. In
preparation of this effort the City is interested in updating the Sanitary Sewer System Plan that will
ultimately inform the work on this effort. The last Sanitary Sewer System Plan was completed in 2005 and
is available upon request. In addition, there has been significant growth in the City since the last update
which is pushing the capacity of the existing facilities and infrastructure. The City is in need of reviewing
and updating the schedule for capital improvements and upgrades.
The City is part of the Metropolitan Council sanitary sewer service system and discharges to the Blue Lake
Treatment Plant. There are 118 miles of gravity sewer that deliver waste to the Metropolitan Council
Interceptor on the north boundary of the city. Due to the topography of the City, there are 40 lift stations
that are needed, many cases in series, to deliver the waste through 8.5 miles of forcemain. With the
growth occurring primarily to the south, the City needs to review the capacity of the older lift stations and
interceptors to ensure there is proper capacity to support the new development.
The City is seeking proposals from qualified firms to update the Sanitary Sewer System Plan. The report
shall address both deficiencies in the existing systems and capital needs for future system expansions.
The report shall include projected costs and various options for funding the recommended improvements
such as grant programs. A projection of when the capital improvements will be needed should also be
included. A computer model of the City’s sewer system shall be developed and used to analyze both the
existing and future systems.
PROJECT SCOPE
I. SEWER SYSTEM PLAN
A. OBJECTIVE – Provide the City of Prior Lake with a report updating the City’s 2005 Sewer System
Plan. The plan shall address all areas included in the City’s Comprehensive Plan and any
additional service areas identified by the city. The consultant shall examine both the City’s sanitary
collection system and the MCES interceptor piping network within the City of Prior Lake. A sanitary
sewer model shall be developed to determine design capacity in the existing collection system and
any changes needed to handle future development.
MARCH 17, 2017, 4:00 P.M., PRIOR LAKE MAINTENANCE CENTER
REQUEST FOR PROPOSALS
PROFESSIONAL ENGINEERING SERVICES
SANITARY SEWER SYSTEM PLAN UPDATE
3
B. CONSULTANT PROJECT TASKS
1. Existing Wastewater Collection System Condition Review
The consultant shall review City records representing areas of the City with respect to pipe
material and age of the collection piping, pumping records of the lift stations, and
representative condition of all components.
The consultant shall meet with City staff and discuss problem areas, discuss operation and
maintenance issues, and assess overall collection system performance.
The consultant shall meet with Metropolitan Council Environmental Services (MCES) staff
to discuss the status of their interceptors, O&M issues, capital improvement projects
scheduled or planned and long range plans for the MCES collection system in the area
which could impact the City.
2. Prepare Inflow and Infiltration Flow Summary
The consultant shall review the peaking factor established by the MCES to determine if it is
reasonable.
3. Sanitary Sewer Flow Projections
Existing and future flow projections shall be determined to evaluate the system capacity.
The consultant shall meet with the City’s planning and development staff to coordinate
potential land use changes through Year 2040.
The consultant shall work with Prior Lake staff to develop the ultimate site use and project
potential increases in wastewater flow demand on the collection system.
The Prior Lake sanitary sewer system shall be divided into sewersheds and/or sewer
districts.
Existing land use and water usage data from the City’s GIS database shall be utilized to
develop average wastewater flows by pipe section, district and sewershed.
The consultant shall review each major sewer user to determine if any of the
commercial/industrial facilities are proposing any usage changes in the future which may
impact overall sewer flows.
Peaking factors shall be assigned appropriately to each sewer district and be used to
determine peak flow conditions in individual reaches of pipe.
4. Develop Sanitary Sewer Collection System Model
As a tool to evaluate existing and future sanitary sewer collection system operation, the
consultant shall develop a sanitary sewer model of the Prior Lake collection system using
InfoSWMM software developed by MWH Soft.
The City’s sanitary sewer collection system CADD drawings and the existing GIS database
files on the sanitary sewer collection system developed shall be used to complete the
framework for the model.
Data from the previous tasks in this work plan shall populate the model with flow data for
later calibration in future tasks.
The consultant shall present the existing system model and the assumptions used to
prepare the final results.
REQUEST FOR PROPOSALS
PROFESSIONAL ENGINEERING SERVICES
SANITARY SEWER SYSTEM PLAN UPDATE
4
Output from the model shall consist of pipe characteristics, required capacity, flow
generation assumptions, peak flow factors, etc.
5. Sanitary Sewer Model Calibration
Once the model is populated with the initial sewer flow data, the consultant shall use the
flow monitoring data collected previously by the City to check the validity of the data
against field wastewater flow measurements at strategic locations in the Prior Lake
sanitary sewer collection system.
Inflow/Infiltration data collected during wet weather events shall be used to determine
existing sanitary sewer collection system capacity during peak events.
The data collected from the flow monitoring shall be used to calibrate the InfoSWMM
model.
6. Evaluate Prior Lake Sanitary Collection System
The consultant shall utilize the calibrated model to an alyze the sanitary collection system to
determine the following:
Adequacy of the existing collection system capacity
Adequacy of the MCES interceptor (MCES 7120)
Evaluate existing capacity of current lift stations
Review collection system for potential operational issues
Potential sewer rehabilitation or capital improvements
7. Determine Future Sanitary Collection System Needs
The consultant shall use the calibrated Info SWMM model to make recommendations for long
range planning and development of future interceptors to handle anticipate d growth or more
likely changes in land use density. The following issues shall be reviewed:
Identify potential pipe sizes to accommodate future system demands
Optimize alignment and location of future interceptors
Determine the need, capacity and locations of additional lift stations
Determine impacts of growth and sewer extensions on the existing collection system
The results of the model shall be used to develop capital improvements and recommendations
for future long range planning. Options for financing collection system improvements shall also
be discussed.
8. Wastewater Comprehensive Sewer Plan Report
The consultant shall provide the City of Prior Lake with the final deliverable in the format
developed by the City staff which includes an Executive Summary of the Comprehensive
Sanitary Sewer Plan; the entire Plan consisting of the report, GIS sewer system maps
(present and proposed systems); and technical appendices.
REQUEST FOR PROPOSALS
PROFESSIONAL ENGINEERING SERVICES
SANITARY SEWER SYSTEM PLAN UPDATE
5
The report shall present a review of the work completed in the above tasks and assist the
City in establishing a capital improvement plan for future needs in 5 -, 10-, and 20-year
increments.
PLANNING AND COUNCIL MEETINGS
The consultant shall prepare for and attend the following project meetings with City staff during completion
of the Water Plan Update:
A kick-off meeting with the entire Comprehensive Sanitary Sewer Plan Update team.
A council workshop.
A city council meeting.
A planning commission meeting.
A planning commission meeting public hearing.
Three staff meetings to discuss progress, issues, and model parameters.
Two MCES staff meetings to discuss interceptor design and planning issues.
The consultant shall prepare the necessary presentations for the meetings.
PROJECT SCHEDULE
The consultant shall begin the project as soon as an agreement has been approved by the City. A
preliminary schedule by the City for the initial draft of the Sewer System Plan is set for October 13, 2017.
PROPOSALS
I. PROPOSAL CONTENTS
The following must be considered minimal contents of the proposal:
A. A restatement of the goals and objectives and the project tasks to demonstrate the responder’s
view of the project.
B. An outline of the responder’s background and experience with particular emphasis on local
government work. Identify personnel to conduct the project and detail their training and work
experience. No change in personnel assigned to the project will be permitted without approval of
the city.
C. A detailed work plan identifying the work tasks to be accomplished and the budget hours to be
expended on each task and subtask including the hourly billing rates for each team member.
D. A listing of the names, addresses and telephone numbers of at least three (3) references for whom
the respondent has completed a Sanitary Sewer System Plan. Reference Cities should have a
population of over 10,000 people.
REQUEST FOR PROPOSALS
PROFESSIONAL ENGINEERING SERVICES
SANITARY SEWER SYSTEM PLAN UPDATE
6
II. DEPARTMENT CONTACTS
Prospective responders who may have questions regarding this Request for Proposals may call, email, or
write:
Jason Wedel, P.E.
jwedel@cityofpriorlake.com
Interim Public Works Director
City of Prior Lake
4646 Dakota Street
Prior Lake, MN 55372
952-447-9890
III. SUBMISSION OF PROPOSALS
All proposals must be sent to and received by:
Barb Thompson
City of Prior Lake
17073 Adelmann Street SE
Prior Lake, MN 55372
no later than
Friday, March 17, 2017 at 4:00 p.m.
Late proposals will not be accepted. Submit 3 hard copies and one electronic copy of the proposal.
Proposals are to be sealed in mailing envelopes or packages with the responder’s name and address
clearly written on the outside. Each copy of the proposal must be signed by an authorized member of the
firm(s). Terms of the project as stated must be valid for the length of the project.
The City is not responsible for any costs incurred by the responding Contractor in the preparation of the
Proposal or for any other cost to the Contractor associated with responding to the RFP.
All Proposals submitted in response to the RFP will be considered the property of the City and not be
returned
This RFP does not obligate the City of Prior Lake to award a contract or complete any specific Project. The
City reserves the right to cancel the RFP or to change its scope if it is considered to be in the best interest
of the City.
The City reserves the right to contact Contractor’s individually for the purpose of clarifying Proposals
Any and all exceptions to the requirements of this RFP must be identified and fully explained in the
submitted Proposal. Failure to do so could result in disqualification of the Proposal.
REQUEST FOR PROPOSALS
PROFESSIONAL ENGINEERING SERVICES
SANITARY SEWER SYSTEM PLAN UPDATE
7
IV. EVALUATION
All proposals received by the deadline will be evaluated by representatives of the City. Factors upon which
proposals will be judged include the following:
A. Expressed understanding of proposal objectives (10%)
B. Work plan (25%)
C. Cost detail (25%)
D. Qualifications/experience of company (15%)
E. Qualifications/experience of personnel working on the project (25%)
V. SELECTION
Selection of a consultant for this project will be based on the criteria noted above. Upon initial selection of
the consultant, the City will enter into negotiations with the selected consultant to finalize the work plan
including budget hours. Should the City and the selected consultant fail to satisfactorily reach agreement
as to the work plan including budget, the City may enter into negotiations with the respondent judged
second in the evaluation process.
City of Prior Lake
March 17, 2017
Proposal
Sanitary Sewer System
Plan Update
March 17, 2017
Barb Thompson
City of Prior Lake
17073 Adelmann Street SE
Prior Lake, MN 55372
Reference: Proposal for Professional Engineering Services – Sanitary Sewer System Plan Update
Dear Ms. Thompson:
The City of Prior Lake is growing, and expected to grow even more. As the City plans for the future, an updated Sanitary
Sewer System Plan will provide a new foundation for adequate service for the City’s current residents and a roadmap
for the additional growth.
Stantec will work with the City to evaluate your existing sewer system, identify deficiencies, and recommend
improvements. From there, we will develop an expansion plan to cost-effectively meet future growth needs and provide
the City with system costs and a phasing strategy to make the improvement plans a reality.
Our Stantec team offers strong local experience in sewer system planning and significant expertise in InfoSWMM
modeling. As your project manager, I will bring my practical knowledge from more than 20 similar sewer plans
developed for local communities. Our team is further strengthened by the participation of two sanitary sewer modeling
specialists, Carl Chan and Nick Stepina, who joined Stantec through our recent acquisition of MWH Global, where
InfoSWMM was developed. Their knowledge and insights will benefit the project in many ways.
Thank you for this opportunity to provide you with our approach and present our team to the City. Please contact me if
I can provide any additional information to assist you in your decision process. Our team looks forward to working with
the City of Prior Lake.
Sincerely,
STANTEC CONSULTING SERVICES INC.
Dan Edgerton, PE
Senior Associate
(651) 604-4820
dan.edgerton@stantec.com
Stantec Consulting Services Inc.
2335 Highway 36 West | St. Paul MN 55113-3819
Nicollet Commons at Heart of the City
Goals, Objectives, and Project Tasks ..........1
Background and Experience .......................3
Work Plan .......................................................8
References ...................................................12
Appendices
A. Resumes of Key Staff ............................A-1
What’s inside
1
City of Prior Lake – Proposal for Sanitary Sewer System Plan Update
Goals, Objectives, and Project Tasks
More than 10 years has elapsed since the City of Prior Lake prepared its
2005 Sanitary Sewer System Plan (Sewer Plan). Since then, the City has
experienced growth and more is expected. The time has come to update
the plan. In addition, it makes sense to update the Sewer Plan as the overall
City Comprehensive Plan is completed in the near future with updated land
use.
The primary goals of the Sewer Plan are the evaluation of the existing
sanitary sewer system and design of the future system expansion. For the
existing system, this means identifying deficiencies based on existing and
future growth and recommending improvements to the existing system.
This could be replacing existing pipes, lining or otherwise rehabilitating
pipes, providing parallel or bypass pipes, or increasing lift station capacities.
For the future system, the Sewer Plan will need to lay out a sewer system
to meet future growth needs in the City. This means extending the system
out to the ultimate projected growth area and sizing facilities for saturation
development. Since sanitary sewers can last 75 to 100 years, it’s prudent to
size them for full buildout in the City.
The sewer system analysis will include both gravity lines and lift stations
and forcemains. Rather than address all laterals in the City, which are
hard to predict and result in an overly large, complex, cumbersome, and
expensive sewer model, we define the trunk system as all gravity lines 12”
in diameter and larger, plus all lift stations and forcemains. Metropolitan
Council Environmental Services (MCES) facilities within the City will also
be analyzed as appropriate.
Design flows will be based on the proposed land use being developed for the
Comprehensive Plan, existing water use data, and available flow monitoring
data. In general, we’ll start with industry-standard unit flow rates and
modify them as needed by the water use data. Once a sewer model is set up,
we’ll do a final calibration of flows based on flow monitoring data. This flow
calibration could affect both average flows and peaking factors.
For the modeling, we’ll use the City’s existing InfoSWMM model, which
was developed by MWH Global. Stantec offers an advantage to Prior Lake
here because MWH became part of Stantec in 2016. We now have on staff
a number of engineers who have extensive InfoSWMM experience. In
general, we’ll lead the modeling out of our Saint Paul office, but we’ll tap
into MWH experience throughout the modeling process. Nick Stepina in
Chicago and Carl Chan in Boston, both highly experienced InfoSWMM
users, will assist with the modeling effort. Resumes for our team are
provided in the appendix.
Water resources are
one of mankind’s
most valuable
assets. Stantec
strives to conserve
and manage these
resources through
sustainable design.
2
The City also needs to know how to pay for the system. The Sewer Plan will provide
cost estimates and phasing of improvements and costs over the next 5 years, 5 to 10
years, and 10 to 20 years. For the phasing, we will work closely with the City planners
to determine the timing of future development in the City.
The following sections of the proposal contain our detailed work plan to achieve
the above goals and objectives, our experience in Sewer Plans and modeling, and
references. Our work plan includes the following major tasks:
• Project initiation/management
• Data collection
• Confirm design sewer flows
• Existing sanitary sewer system analysis
• Proposed sanitary sewer system analysis
• Report preparation
• Meeting attendance
The organization is slightly different from that in your RFP; however, it covers all the
required tasks, and we’ve found it to be an efficient process for preparing sewer plans.
Our team has extensive background and experience with Sewer Plans for local
communities. Project Manager Dan Edgerton has completed more than 20 plans, and
our team has a wide range of sewer modeling background, ranging from spreadsheet
models to XPSWMM to InfoSWMM.
Because of
our MWH
connection, we
have unmatched
InfoSWMM
knowledge
In-house.
3
City of Prior Lake – Proposal for Sanitary Sewer System Plan Update
Background and Experience
Stantec specializes in the planning, analysis, design, and management of all
conveyance and control aspects of storm water and sanitary sewer system
infrastructure.
Stantec’s master planning and modeling services consist of supply and servicing
studies, system evaluation and optimization, risk assessment, structural and
programmatic capital improvement planning, steady-state and transient analysis
of gravity and pressurized piping networks, hydraulic structure optimization,
mixing and dispersion modeling, odor and corrosion analysis, and computational
fluid dynamics.
Stantec’s local team has extensive experience in lift station design ranging
from small duplex lift stations to large complex MCES pumping stations. Our
expertise in modeling sewer systems allows us to predict main sizes and pumping
capacities. We also perform sewer flow monitoring to locate trouble areas during
wet weather flow conditions. The ability to analyze all aspects of the sanitary
sewer system allows Stantec to perform accurate rate analysis and Capital
Improvement Program recommendations.
Stantec’s infrastructure renewal and planning services include asset
management, condition assessment, and priority planning. We design sewers,
forcemains, transmission mains, pipelines, and all related pumping, storage, and
fluid management facilities along the route, with particular specialization in
trenchless technologies, river crossings, and underground system rehabilitation.
The following project descriptions highlight our team’s local experience and the
InfoSWMM modeling expertise available through MWH, now part of Stantec.
Sanitary Sewer Capacity Study and
Comprehensive Sewer Plan
City of Waseca, Minnesota
Stantec created a citywide sanitary sewer system model for Waseca. An
XPSWMM sewer model was used to determine how downstream bottlenecks
affected pipes upstream. Specific improvements were proposed to alleviate
these downstream bottlenecks. One of these improvements, the 11th Avenue Lift
Station, began construction as the Sewer Plan was being finalized.
The model also served as a backdrop to planning sanitary sewer infrastructure
decades into the future. To refine and calibrate the XPSWMM model, we worked
with City staff to strategically place flow monitoring equipment upstream of the
major bottlenecks. The flow data was incorporated into the model allowing the
model to be much more robust at predicting hydraulic conditions in different
parts of the City.
With this information, the City was able to more efficiently allocate its resources
to correct critical areas experiencing I/I problems.
From the water
source to the
sewer outfall
and beyond,
Stantec delivers
high quality
engineering
services
throughout the
project lifecycle.
4
Comprehensive Sanitary Sewer Plan
City of Owatonna, Minnesota
Stantec prepared a Comprehensive Sanitary Sewer Plan for Owatonna, a growing
community in southern Minnesota. The plan provided an evaluation of existing
facilities as well as a guide for expansion of the trunk sanitary sewer system to
serve the growing population. Of particular concern to the City was utilization of
its existing system to meet robust short-term growth in the northern and eastern
portions of the community. A phasing analysis was performed that maximized the
use of existing trunk sewers and recommended minor improvements at system
bottlenecks that would significantly increase the overall capacity of the system to
handle short-term growth.
The plan included the alignment and sizing of trunk sanitary sewers, location
and capacities of lift stations, and alignment and sizing of force mains. Sewer
modeling of the entire trunk system for existing and ultimate development
conditions was performed to estimate sewer flows and capacities. Cost estimates
and a capital improvement program for proposed sanitary sewer system
improvements were developed.
Waconia Interceptor
Metropolitan Council Environmental Services,
St. Paul, Minnesota
Stantec prepared the design report and plans and specifications for the Waconia
Interceptor. The project includes a sanitary sewer lift station and five miles of
forcemain from Waconia to Victoria. The work included hydraulic design of the
pumps and forcemain, a transient pressure analysis, an analysis of hydrogen
sulfide production and associated internal corrosion, wetland delineation, and an
Environmental Assessment Worksheet.
Comprehensive Sanitary Sewer Plan
City of Carver, Minnesota
Stantec prepared a Comprehensive Sanitary Sewer Plan for Carver, a community
in the southwestern portion of the Twin Cities metro area. The plan provided
an evaluation of existing facilities as well as a guide for expansion of the trunk
sanitary sewer system to serve the growing population. The plan included the
alignment and sizing of trunk sanitary sewers, location and capacities of lift
stations, and alignment and sizing of forcemains. Sewer modeling of the entire
trunk system was performed to estimate sewer flows and capacities under both
existing and ultimate development conditions. Cost estimates and a capital
improvement program for proposed sanitary sewer system improvements were
developed. The plan met Metropolitan Council requirements and received
approval from the agency.
5
City of Prior Lake – Proposal for Sanitary Sewer System Plan Update
Sanitary Sewer Master Plan Update – 2007
City of Las Vegas, Nevada
MWH, now part of Stantec, was retained by the City of Las Vegas to develop
a comprehensive planning document for developing a capital improvement
program to fund and implement required capacity improvements to the
City’s existing sewer system and expansion of sewer facilities to serve new
development. All MWH’s works, findings, and recommendations were compiled
and documented in a planning document called the Sanitary Sewer System
Master Plan Update Report. This report included project descriptions, cost
estimates, and proposed schedules for implementation over five planning
horizons: 2010, 2015, 2020, 2030 and 2055. This planning effort included
analyzing land use and population densities, identifying flow tributaries and
project flows, flow monitoring and calibrating an InfoSWMM sewer model,
performing hydraulic analysis, evaluating the existing sewer network and
identifying system deficiencies, developing and recommending alternative
system improvements, and developing a 50-year Capital Improvement Program.
City of Las Vegas Sanitary Sewer Master Plan
Update - 2012
City of Las Vegas, Nevada
MWH, now part of Stantec, prepared a comprehensive update of the 2007 Master
Plan which was also prepared by MWH. This update is a 50-year planning
document that City staff can use to program, fund, and implement capacity
improvements to the sanitary sewer system and treatment plant.
The work included reviewing and validating flow monitoring data and updating
the modeling parameters in the InfoSWMM hydraulic model previously used
for the 2007 Master Plan update. To update the hydraulic modeling, sewersheds
were revised to accommodate the new City boundaries and changes made to the
system since the last master plan update. Contribution rates for each land use
type established in the 2007 Master Plan were reviewed and land use files for
each planning horizon were developed. The land use files were cross-referenced
to the sewersheds and land use type contribution factors using Load Allocator,
and flow projections were developed for each planning horizon. Determinations
of the future pipe sizing were developed to meet the flow projections for the
buildout horizon.
Each planning horizon was then assessed to determine which portions of the new
piping were needed to meet the growth projections, and associated costs were
developed. Evaluations of alternative routes for the new piping were conducted
using Criterium Decision Plus software. Ultimately, the planning costs for each
planning horizon were combined to produce a comprehensive 50-year Capital
Improvement Program.
6
Las Vegas Valley Sewer Model Update
Clark County Water Reclamation District, Nevada
MWH, now part of Stantec, prepared a comprehensive update of the 2008
Sanitary Sewer Model Evaluation which will be used by CCWRD to program,
fund, and implement capacity improvements to the sewer system. The work
included reviewing and validating flow monitoring data and updating the model
parameters in the InfoSWMM hydraulic model, as well as reviewing and updating
design and cost criteria. To update the sewersheds and hydraulic models, capital
projects constructed, projects currently under design, and other system changes
made since the previous update were incorporated into the model. Contribution
rates for each land use type were reviewed and updated, land use files for each
planning horizon were developed, and point source loads were reviewed and
updated. Flow projections were developed for five planning horizons out to 2053,
and model simulations were conducted to confirm recommendations made in
previous planning efforts. The results of the modeling and evaluation efforts
were used to refine CCWRD’s five-year Capital Improvement Program, as well
as identifying the projects required to meet District growth over the next 40
years. Each planning horizon was then assessed to determine what portions
of the new piping were needed to meet the growth projections, and associated
costs were developed. A preliminary evaluation of major utility conflicts was
conducted for proposed major interceptor projects. The planning costs for each
planning horizon were combined to produce a comprehensive 40-year Capital
Improvement Plan.
Combined Sewer Overflow
Long-Term Control Plan Reassessment
City of South Bend, Indiana Department of Public Works
MWH, now part of Stantec, was retained as the prime consultant and lead
firm for a multi-disciplinary team responsible for re-evaluation of the
City’s Combined Sewer Overflow Long Term Control Plan (LTCP). The re-
evaluation was structured to investigate alternatives for providing equal or
greater environmental benefits at a reduced cost to ratepayers. The team’s
tasks included hydraulic evaluation of existing and alternative plans, cost
estimation and constructability review, water quality performance modeling,
green infrastructure analysis, an update of the financial capability analysis and
development of communications and regulatory strategies.
MWH’s modeling team was responsible for adding geospatial functionality to the
City’s hydraulic model by conversion of the City’s schematic EPA SWMM5 model
to a detailed InfoSWMM model integrated into GIS. The InfoSWMM model was
re-calibrated and used to assess and validate the performance of the existing
LTCP. Outputs from the InfoSWMM modeling analysis served as the basis for
development of LTCP alternatives including conveyance, storage, and green
infrastructure elements.
7
City of Prior Lake – Proposal for Sanitary Sewer System Plan Update
Sanitary Sewer Model Evaluation and Training,
Program Management, Task 8
Clark County Water Reclamation District, Nevada
MWH, now part of Stantec, conducted a comprehensive evaluation of the
Clark County Water Reclamation District’s wastewater collection system and
updated previous plans. MWH developed methods to import their InfoSewer
model into a GIS-based InfoSWMM model to better handle the District’s complex
collection system and calibrate the model to reflect actual conditions. Five
planning horizons out to 2036 were created and model simulation conducted
to evaluate previous planning efforts. This work identified over $80 million
in cost savings, and the deferment for several years, of other projects costing
over $300 million. Twenty-seven projects were identified that needed to be
implemented within their 5-year planning horizon. Once the projects were
identified for the 5-year Capital Improvement Program, the individual projects
were grouped together to minimize the number of design contracts to be managed
by District staff. MWH also trained District staff to use the software and update it
periodically.
8
Work Plan
1. PROJECT INITIATION/MANAGEMENT
• Hold a kickoff meeting with City Staff to discuss the City’s needs, refine study
goals and expectations, and confirm the work plan for the project.
• Develop a preliminary schedule of staff-level and public meetings.
2. DATA COLLECTION
• At the kickoff meeting, discuss data needed for the study. This information
could include (electronic files preferred):
–System mapping, topography, and aerial photography from the City’s GIS
database
–Physical system data (pipe lengths, sizes, and invert elevations; pipe age and
material; lift station and forcemain data, including pumping records; video
inspections; pipe and pump condition assessments; infiltration/inflow data)
–Water use and connection data from the City’s GIS database
–City Staff estimates of flow projections
–Land use, including potential changes through year 2040
–Changes in commercial/industrial uses or flow projections
–Capital improvement plan
–Street reconstruction program
–Past studies and reports
• Follow up with City staff to obtain the available above information.
• Meet with City Staff to discuss sewer system problem areas, O&M issues, and
overall system performance.
• Meet with MCES staff to discuss their interceptors, O&M issues, and scheduled
or planned projects that could affect the City.
3. CONFIRM DESIGN SEWER FLOWS
• Use past studies, topographic contour data, and sanitary sewer base mapping to
confirm or update sewer subdistrict boundaries.
• Use land use categories and densities from the City (including potential
changes through the year 2040), existing water use and connection data from
the City’s GIS database, and industry standard values to confirm or update
current unit wastewater flow rates by land use in the City.
• Confirm or update average sewer flows by subdistrict using the sewer
subdistrict boundaries, land use mapping, unit flow rates, projected changes
in commercial/industrial flows, and City Staff estimates of flow projections.
Perform the computations using the City’s current InfoSWMM model.
Calibrate sewer flows against available flow monitoring data. Develop average
flows for the full-buildout scenario.
• Confirm or update current peak flow factors based on MCES
recommendations, monitored infiltration/inflow data, and industry standard
values. Use peak flow factors to compute design peak flows throughout the
existing and proposed trunk sewer system. Perform the computations using the
InfoSWMM model. Develop design peak flows for the full-buildout scenario.
9
City of Prior Lake – Proposal for Sanitary Sewer System Plan Update
4. EXISTING SANITARY SEWER SYSTEM ANALYSIS
• Confirm or update the City’s existing InfoSWMM model based on the City’s
CADD drawings and GIS database. Incorporate calibrated design flows based
on flow monitoring data.
• Analyze the capacity of the existing trunk sewer system, based on the existing
system information—sizes, lengths, invert elevations, slopes, and depths.
– Evaluate adequacy of existing system capacity versus proposed design flows
at full buildout.
– Evaluate adequacy of MCES Interceptor 7120.
– Evaluate capacity of existing lift stations.
– Identify any bottlenecks or potential operational issues and propose
improvements to address problem areas. Improvements could include
rehabilitation or lining; or capital improvements such as pipe replacements,
parallel lines, or bypasses, and pump and forcemain improvements.
• Present and discuss results and recommendations with City Staff.
5. PROPOSED SANITARY SEWER SYSTEM ANALYSIS
• Based on the existing connection points, topography, and latest land use
(including potential changes through the year 2040), update the proposed
trunk sewer system as needed to meet future growth needs. Trunk sewers are
defined as gravity lines 12 inches and greater in diameter and all lift stations
and forcemains. Optimize location and alignment of future trunk sewers based
on topography, physical constraints (e.g., surface waters, existing utilities,
existing structures, roadways and railroads), and projected land use.
• Use the InfoSWMM model to update the design of the gravity pipes, lift
stations, and forcemains for full buildout. Design flows will be computed as
described above. Topographic data will be used to estimate future pipe slopes.
The model will compute pipe sizes throughout the trunk system necessary to
handle the design flows. Our philosophy is to conservatively design facilities for
ultimate saturation development, so as to avoid or minimize the need to replace
undersized facilities as interim land uses change in the future. Since sanitary
sewers can last for 75 to 100 years, long-term planning horizons need to be
considered.
• Use topographic data, invert elevations of existing connection points, and
minimum pipe slopes to determine the need for lift stations and forcemains.
Size the capacities of lift stations and forcemains as needed to meet design
flows at full buildout.
• Prepare a summary of capital improvements with phasing and budget costs
in the next 5 years, 5 to 10 years, and 10 to 20 years. This could include new
facilities and lining or replacement of existing sewers.
6. REPORT PREPARATION
• Prepare a user-friendly report that can be read by a non-technical audience yet
still provides sufficiently detailed technical data for use by the City in sewer
planning. Use the format developed by City Staff.
• Include graphics, figures, and maps to clarify items discussed in the report.
10
• Include design data in technical appendices.
• Provide draft and final reports as follows (three hard copies and one pdf of
each):
–First draft for City Staff review
–Second draft for submittal to Metropolitan Council
–Final report for City approval and use
7. MEETING ATTENDANCE
• Attend the following meetings, as determined by City Staff:
–Kickoff meeting (included in budget of Task 1)
–Three progress/review meetings with City Staff
–Two meetings with MCES staff
–City Council workshop
–City Council meeting
–Planning Commission meeting
–Planning Commission public hearing
• For staff meetings, assume informal working discussions of progress and
results with no formal presentations.
• For City Council and Planning Commission meetings, assume a short
presentation followed by questions and answers.
• City Staff responsible for scheduling, invitations, and logistics of the public
meetings.
11
City of Prior Lake – Proposal for Sanitary Sewer System Plan Update
Budget Hours
Da
n
Ed
g
e
r
t
o
n
Ty
l
e
r
Jo
h
n
s
o
n
Ni
c
k
St
e
p
i
n
a
Ca
r
l
C
h
a
n
Wa
t
e
r
Re
s
o
u
r
c
e
s
En
g
i
n
e
e
r
Ho
n
g
y
i
Du
a
n
Ho
u
r
s
b
y
Ta
s
k
Pr
o
j
e
c
t
I
n
i
t
i
a
t
i
o
n
/
M
a
n
a
g
e
m
e
n
t
8
6
14
$2
,
2
1
4
$2
,
3
0
0
Da
t
a
C
o
l
l
e
c
t
i
o
n
2
8
4
14
$1
,
8
8
6
$1
,
9
0
0
Co
n
f
i
r
m
D
e
s
i
g
n
F
l
o
w
s
5
20
2
2
29
$3
,
5
4
5
$3
,
6
0
0
Ex
i
s
t
i
n
g
S
a
n
i
t
a
r
y
S
e
w
e
r
S
y
s
t
e
m
A
n
a
l
y
s
i
s
5
40
4
2
4
55
$6
,
7
3
7
$6
,
8
0
0
Pr
o
p
o
s
e
d
S
a
n
i
t
a
r
y
S
e
w
e
r
S
y
s
t
e
m
A
n
a
l
y
s
i
s
10
40
4
2
4
60
$7
,
6
2
2
$7
,
7
0
0
Re
p
o
r
t
P
r
e
p
a
r
a
t
i
o
n
10
40
6
56
$7
,
7
9
2
$7
,
8
0
0
Me
e
t
i
n
g
A
t
t
e
n
d
a
n
c
e
(
6
s
t
a
f
f
-
l
e
v
e
l
m
e
e
t
i
n
g
s
,
4
p
u
b
l
i
c
p
r
e
s
e
n
t
a
t
i
o
n
s
)
36
24
60
$9
,
5
6
4
$9
,
6
0
0
Ex
p
e
n
s
e
s
$7
0
0
$7
0
0
To
t
a
l
H
o
u
r
s
76
17
8
10
6
8
10
28
8
Ho
u
r
l
y
R
a
t
e
$1
7
7
$1
3
3
$1
2
5
$1
7
7
$1
3
3
$1
1
7
Co
s
t
b
y
I
n
d
i
v
i
d
u
a
l
$1
3
,
4
5
2
$2
3
,
6
7
4
$1
,
2
5
0
$1
,
0
6
2
$1
,
0
6
4
$1
,
1
7
0
$4
2
,
3
7
2
$4
2
,
4
0
0
Pr
i
o
r
L
a
k
e
S
a
n
i
t
a
r
y
S
e
w
e
r
S
y
s
t
e
m
P
l
a
n
U
p
d
a
t
e
-
B
u
d
g
e
t
H
o
u
r
s
Co
s
t
b
y
Ta
s
k
(R
o
u
n
d
e
d
)
Ho
u
r
s
E
s
t
i
m
a
t
e
T
a
s
k
Co
s
t
b
y
Ta
s
k
12
References
We encourage you to contact these individuals regarding our responsiveness and
quality of deliverables.
City of Chaska
Matt Clark, City Engineer
mclark@chaskamn.com
952-227-7522
City of Cottage Grove
Ryan Burfeind, City Engineer
rburfeind@cottage-grove.org
651-458-2899
City of South Bend
Kieran Fahey, Director, Long Term Growth Plan
kfahey@southbendin.gov
574-235-5993
A. ResumesA. Resumes
of Key Staff
A-1
City of Prior Lake – Proposal for Sanitary Sewer System Plan Update
Dan is a senior hydraulic engineer in the Water Resources Group at Stantec’s
Saint Paul office. He has Bachelor’s and Master’s Degrees in Civil and
Environmental Engineering and 35 years of experience in the profession. He has
worked for numerous communities in the Twin Cities metro area and around
the state on infrastructure planning and management, with an emphasis on
sustainable planning and design. His work has involved both new development
and revitalization of existing developments. His projects have ranged from sewer
studies and street and utility design for municipalities, to wastewater facility
plans for the Metropolitan Council Environmental Services, to multi-million
dollar Corps of Engineers flood control projects. .
Relevant Project Experience
Comprehensive Sanitary Sewer Plan, Owatonna, Minnesota (Project
Manager) – A Comprehensive Sanitary Sewer Plan was prepared for the City
of Owatonna, a growing community in southern Minnesota. The plan provided
an inventory of existing facilities as well as a guide for expansion of the trunk
sanitary sewer system to serve the growing population. Of particular concern to
the City was utilization of its existing system to meet robust short-term growth
in the northern and eastern portions of the community. A phasing analysis was
performed that maximized the use of existing trunk sewers and recommended
minor improvements at system bottlenecks that would significantly increase the
overall capacity of the system to handle short-term growth. The plan included
the alignment and sizing of trunk sanitary sewers, location and capacities of
lift stations, and alignment and sizing of force mains. Sewer modeling of the
entire trunk system was performed to estimate sewer flows and capacities.
Cost estimates and a capital improvement program for proposed sanitary sewer
system improvements were developed.
Comprehensive Sanitary Sewer Plan, Carver, Minnesota (Project Manager)
– A Comprehensive Sanitary Sewer Plan was prepared for the City of Carver,
a growing community in the southwestern portion of the Twin Cities metro
area. The plan provided an inventory of existing facilities as well as a guide for
expansion of the trunk sanitary sewer system to serve the growing population.
The plan included the alignment and sizing of trunk sanitary sewers, location
and capacities of lift stations, and alignment and sizing of force mains. Sewer
modeling of the entire trunk system was performed to estimate sewer flows and
capacities. Cost estimates and a capital improvement program for proposed
sanitary sewer system improvements were developed. The plan met Metropolitan
Council requirements and received approval from the agency.
Comprehensive Sanitary Sewer Plan, Willmar, Minnesota (Project Manager)
– As part of the work, an I/I analysis was performed to reduce this component of
flow in existing older sanitary sewers in the City. The plan included the alignment
and sizing of trunk sanitary sewers, location and capacities of lift stations, and
alignment and sizing of force mains. Cost estimates and a capital improvement
program for proposed sanitary sewer system improvements were developed.
Education & Credentials
• Master of Science, Civil and
Environmental Engineering,
University of Wisconsin,
Madison, Wisconsin, 1982
• Bachelor of Science, Civil and
Environmental Engineering,
University of Wisconsin,
Madison, Wisconsin, 1980
• Professional Engineer #19206,
State of Minnesota
Professional Affiliations
• Chair of Water Resources
Committee, City Engineers
Association of Minnesota
• Member, American Council of
Engineering Companies
• Member, American Public
Works Association, Minnesota
Chapter
Dan
Edgerton
PE
Project Manager
A-2
Comprehensive Sanitary Sewer Plan, Plymouth, Minnesota (Project Manager)
– The comprehensive sanitary sewer plan included the alignment and sizing of
trunk sanitary sewers, location and capacities of lift stations, and alignment and
sizing of force mains. Cost estimates and a capital improvement program for
proposed sanitary sewer system improvements were developed. The plan met
Metropolitan Council requirements and received approval from the agency.
Comprehensive Sanitary Sewer Plans – Dan has worked on comprehensive
sanitary sewer plans for the following communities: Annandale, MN; Apple
Valley, MN; Carver, MN; Chaska, MN; Corcoran, MN; Delano, MN; Eagan, MN;
Farmington, MN; Hastings, MN; Hudson, WI; Owatonna, MN; Plymouth, MN;
Redwood Falls, MN; Rosemount, MN; Willmar, MN; Winona, MN; Woodbury,
MN
Waconia Interceptor, Waconia, Minnesota (Project Manager) – This project
involved preparing the design report and plans and specifications for the Waconia
Interceptor. The project includes a sanitary sewer lift station and five miles of
forcemain from Waconia, MN, to Victoria, MN. The work included hydraulic
design of the pumps and forcemain, a transient pressure analysis, an analysis
of hydrogen, sulfide production and associated internal corrosion, wetland
delineation and an Environmental Assessment Worksheet.
Municipal Engineering – Dan has extensive experience in municipal
engineering. He has provided a full range of engineering services, including
comprehensive planning, preliminary design, and final design plans and
specifications. Dan also provides a variety of technical assistance related to water
resources issues, including flooding, drainage, water quality, infiltration and
volume control, erosion control, environmental assessments, and wetlands.
Public Participation – Dan is experienced in involving public agencies and other
interested parties in the planning process. For example, in the course of the
two-year planning process for the MCES Elm Creek Interceptor, several review
meetings were held with a technical advisory committee, composed of planning
and engineering staffs from eight communities, and a Task Force composed of
policy makers from the communities. Representatives of the Met Council were
also included. In addition, focus group meetings with local residents were held to
obtain comments on community values.
Dan Edgerton
A-3
City of Prior Lake – Proposal for Sanitary Sewer System Plan Update
Tyler is an experienced Professional Engineer that assist clients with their
sanitary and stormwater master planning needs by using hydraulic and
hydrologic modeling, storm and sanitary sewer design, site design and review,
water quality analysis and design, MS4 permitting, and construction needs for
their projects. Tyler is knowledgeable and has working experience in multiple
sectors including sanitary and stormwater masterplans, flood control type
projects, residential and commercial land development, renewable energy, and
legal drain projects. He is proficient in numerous design programs including
XPSWMM, HEC-RAS, HydroCAD, AutoCAD, and ArcGIS.
Relevant Project Experience
Sanitary Sewer Master Planning, Cottage Grove, Minnesota – Tyler currently
assists the City with their sanitary sewer master planning. As areas become
developed, Tyler analyzes the current Comprehensive Sewer Plan to verify
there is capacity within the system. If a development is proposing to alter the
original land use anticipated for the site or redirect the flows to another sewer
district, Tyler is responsible for analyzing the system to the MCES connection
points within the City to verify trunk systems downstream will not be negatively
impacted by the proposed changes.
Northwest Area Sanitary Sewer Analysis, Cottage Grove, Minnesota –
Development is occurring in the northwestern portion of Cottage Grove,
including the potential location of a new middle school. Tyler analyzed the
capacity of the sanitary sewer system to handle the anticipated flows from the
new school. The work involved inventorying the existing sewer in the area,
determining service areas, estimating average and design peak flows, laying out
a proposed system to serve the school, and creating a model of the existing and
proposed sewer system to evaluate system capacity.
Hydrologic & Hydraulic Modeling
Waseca Surface Water Management Plan, Waseca, Minnesota – Tyler is the lead
engineer for the Waseca Surface Water Management Plan. He is responsible for
the analysis of the City’s existing storm sewer system, identifying problematic
areas based on the analysis, and providing solutions to the problematic areas
by creating a detailed XPSWMM model. Tyler also was the lead modeler for the
City’s Alum Pond analysis using XPSWMM to determine the most efficient and
cost-effective way to route flows into the pond to maximize results.
Port Washington Larabee Street XPSWMM Flood Analysis, Port Washington,
Wisconsin –Tyler was the lead modeler and designer for this flood analysis.
An existing XPSWMM model was created for this 314-acre watershed and
modified to be more detailed for the downstream residential neighborhood that
experiences frequent flooding. Tyler calibrated the existing model to replicate
known storm events based on six different proposed scenarios that compared
improved conditions to existing conditions for discharge rates, water surface
elevations, and duration of flooding in the identified models. Improvement
recommendations included providing additional storage in upstream detention
basins, increasing pipe sizes, and converting existing storm sewer lines back to
streams. Tyler also assisted in writing and preparing the report of our findings
and recommendations.
Education & Credentials
• Bachelor of Science in Civil
Engineering, North Dakota
State University, Fargo, North
Dakota, 2007
• Registered Engineer #51473,
State of Minnesota
Tyler
Johnson
PE
Water Resources
Specialist
A-4
2015 Xylon and 45th Avenue Improvements, New Hope, Minnesota – The
Xylon Avenue and 45th Avenue Improvement project consisted of full street
reconstruction of approximately a half mile stretch between 42nd Avenue and
Winnetka Avenue in New Hope. Tyler led the stormwater efforts for this project.
The stormwater analysis included determining the watershed, developing
design flows, storm sewer pipe sizing, and stormwater spread calculations. An
XPSWMM model using NOAA Atlas 14 precipitation data was created for the
drainage area to analyze the proposed pipe sizes that outfall into an existing pond.
Centra Homes Development XPSWMM Analysis, New Hope, Minnesota –
With Stantec as the City Engineer and Tyler as their lead stormwater specialist,
he reviewed this 16-acre infill development to make sure the developer was
meeting the City’s stormwater requirements. In addition to the review, Tyler also
performed an analysis using XPSWMM to design the outlet control structure
to the proposed stormwater pond of the development that would restrict flows
leaving the site and help reduce flooding of adjacent apartment complexes located
in a low lying area. After the analysis was performed, Tyler created a summary
memo showing the positive impacts the stormwater pond would have to the
adjacent property by reducing the flooding by 1.46 to 1.94 feet for the 2-, 10-, and
100-year storm events that were modeled.
Northwood Lake Stormwater Improvements, New Hope, Minnesota – Tyler
was the lead stormwater engineer for this stormwater project that will help
reduce the pollutant levels entering Northwood Lake. Tyler designed a series of
stormwater BMPs that included a stormwater pond, a swirl chamber manhole,
rain gardens, and underground storage for stormwater reuse. The underground
storage tank is designed to hold 160,000 gallons of water that will be pumped to
nearby ballfields for irrigation purposes. The swirl chamber manhole will act as a
pretreatment device before the stormwater enters the underground storage tank.
If the tank is already full, stormwater will be transported through an emergency
outfall into a series of three rain gardens before entering Northwood Lake. A
stormwater pond was also constructed on the west side of the lake adjacent to
Jordan Avenue that collects backyard drainage and street runoff from Jordan
Avenue, prior to discharging to the lake. The project treats stormwater runoff
from approximately 110 acres that was previously untreated. An XPSWMM
model was created to analyze this complex system to determine how the storm
sewer would function when the underground tank was empty and when it was full
and to verify no negative impacts were being created in the watershed.
Cooper High School XPSWMM Analysis, New Hope, Minnesota – Tyler was
the project manager and lead designer for this analysis. An XPSWMM model
was created for Cooper High School and surrounding neighborhood to verify
there would be no impacts to the surrounding neighborhoods if the high school
increased its flow rate into the storm sewer line at 49th Avenue. The analysis
included watershed assessment and an XPSWMM model to estimate the
peak flow rates, pond high water levels, and impacts made to the surrounding
neighborhoods.
Tyler Johnson
A-5
City of Prior Lake – Proposal for Sanitary Sewer System Plan Update
Education & Credentials
• MS, Civil & Environmental
Engineering, Norwich
University
• BS, Water Resources
Engineering, University of
Guelph
• Professional Engineer
#10504977, State of Indiana
• NASSCO PACP Certified
Professional Affiliations
• Incoming Chair (2017), Water
Environment Federation
(WEF) Collection System
Modeling Technical Practice
Group.
• Asset Management Approach
for I/I Management Sub-
Group Leader, WEF Collection
I/I Technical Practice Group.
• Member, WEF Collection
System Committee
• Member, WEF Collection
System Specialty Conference
Committee
Carl
Chan
PE, D.RWE
Sanitary Sewer
Modeling Specialist
Carl is a hydraulic engineer with over 18 years of industry experience focusing
on wastewater and stormwater collection systems. He specializes in using
a variety of collection system modeling platforms to meet clients’ hydraulic
modeling needs during the planning, design and implementation phases of
their sewer programs. He has extensive experience in model development and
calibration; capacity and condition assessments, large scale flow monitoring
program development and implementation, radar-rainfall application, system
optimization using real time control / smart systems, tunnel hydraulic evaluation,
operations analysis, green infrastructure evaluation, LTCP and master plan
development, stormwater and flood mitigation, modeling software testing and
selection, and software development.
Relevant Project Experience
Terrace Villa Sanitary Sewer Capacity Assessment, Montgomery County,
Ohio* – Carl was responsible for using Innovyze InfoWorks ICM to expand
and recalibrate the existing collection system network model in the Terrace
Villa area for Montgomery County. His responsibilities included updating the
sanitary sewer model, determining proper I/I levels based on flow monitoring
data, updating sanitary sewer flows, recalibrating the model, assessing the sewer
capacity; identifying the network limitations and the causes of basement flooding;
applying condition assessment information to identify potential RDII sources;
and determining a cost-effective solution to address both capacity and condition
issues.
System Wide Model (SWM) Updates and Maintenance Phase 1, 2, 3 and 4, MSD
Cincinnati, Ohio* – Carl led the team on this four- year project to update and
provide maintenance on MSD’s System Wide Model which consists of 45,000+
nodes and 7 WWTPs. This project included updating sewer flow projections,
recalibrating a 10-year old hydraulic model, and incorporating over 300 green
infrastructure projects into the model using InfoSWMM and PCSWMM.
Hydraulic Model Expansion for CSO Facilities Planning and Design,
Indianapolis, Indiana* – Carl was the lead modeler and deputy project manager
who mentored and directed a team of engineers in developing a large scale
hydraulic model (over 10,000+ node model) for the entire Indianapolis combined
sewer service area to support the $1.7 billion CSO Long-term Control Plan
facilities planning and design projects. He was responsible for all aspects of
model development and calibration, including the development and reviews of
a large flow monitoring program (over 400+ meters) and application of radar-
rainfall to support modeling activities. He also led the effort in performing
five-year hydraulic model continuous simulations of the entire sewer network
to study CSO discharge volume and frequency, and confirming the preliminary
design of CSO control facilities. Carl also supported the development of the
LTCP and assisted the City in optimizing facility needs to meet Consent Decree
requirements. His other responsibilities included writing project reports and
training project team members and the City’s staff in the principles and practices
of SWMM modeling and flow monitoring as well as leading subconsultants in
various tasks.
A-6
Task Leader, Northern Service Area Sanitary Sewer Master Plan, Guam Water
Authority, Guam* – Carl led a team of engineers develop a sanitary sewer master
plan for Guam Water Authority. He implemented a temporary flow monitoring
program to support sanitary sewer model development and calibration needs.
He also developed sanitary sewer flow projections under a range of existing and
future conditions based on different growth plans, provided by the Department
of Defense. I/I flows were also estimated based on available data. After model
calibration, Carl evaluated the sanitary collection system and identified short-
term and long-term capacity needs. Alternatives were developed to address the
capacity needs and a cost-effective CIP was developed and optimized..
Sanitary Sewer Overflow Analysis and Planning (SSOAP) Toolbox Software,
US EPA, Various Locations*– Carl was the lead developer for this joint software
development project between CDM Smith and U.S. EPA under a cooperative
research agreement. The SSOAP software was designed to help engineers
study the behavior of rainfall dependent inflow and infiltration. Carl was a lead
developer of this software and represented EPA to provide technical support to
general public. He was also a primary author of two EPA publications on SSOAP
Toolbox.
Central Tunnel System (Stormwater) Layout Design and Tunnel Evaluation,
City of Minneapolis, Minnesota* – Carl is currently responsible for updating and
recalibrating the City’s Tunnel hydrologic and hydraulic model in XPSWMM.
His other responsibilities are conducting capacity assessment of the existing
Central Tunnel System’s capacity, evaluating multiple potential solutions such
as Parallel Tunnel and Real-Time Control, assessing the impact of the water
level in the Mississippi River on the Tunnel Capacity, and determining the most
cost-efficient solution that can lower the HGL in the existing tunnel system under
extreme weather conditions.
Barry Rose Water Reclamation Facility Expansion, City of Pearland, Texas
– Carl provided technical direction to support the planning efforts of a water
reclamation facility expansion project. This project included updating a sanitary
sewer master plan for City of Pearland, which consisted of updating and
recalibrating a 10-year old sanitary sewer collection system model under existing,
10-year growth, and ultimate growth scenarios. Existing and future sewer
flows and I/I flows were updated and estimated using flow monitoring data and
population projections. Future CIPs were determined and updated. The modeling
results were used to support water reclamation facility preliminary design.
Three Rivers Protection and Overflow Reduction Tunnel (3RPORT) Final
Planning and Design, Fort Wayne, Indiana* – Carl led the project team to
optimize tunnel and consolidation sewer sizing and operations using both design
storm and five-year continuous model simulations with MIKE URBAN and EPA
SWMM. He conducted a series of workshops to convey complex modeling results
and issues to the City’s staff and 3RPORT designers. He worked closely with
the City’s staff to develop a variety of 3RPORT configurations for alternatives
analysis and develop 3RPORT design parameters for the designers. He was also
responsible for writing the 3RPORT Final Planning Report.
* Denotes projects completed with other firms.
Carl Chan
A-7
City of Prior Lake – Proposal for Sanitary Sewer System Plan Update
Nicholas
Stepina
PE
Sanitary Sewer
Modeling Specialist
Education & Credentials
• MSc, Civil Engineering,
University of Illinois at
Urbana-Champaign, 2011
• BSc, Civil and Environmental
Engineering, University of
Illinois at Urbana-Champaign,
2010
• Professional Engineer
#062.067171, State of Illinois
Nick is an experienced civil and hydraulic engineer who has led hydraulic
modeling for various projects involving advanced hydraulic techniques
and practical issues such as support of design, construction and regulatory
negotiation activities. He recently completed a year-long sewer rehabilitation
project in Baltimore that involved significant InfoSWMM modeling. Nick has
demonstrated leadership as an expert in 1-D, 2-D, and advanced 3-D hydraulic
analysis methodology and is part of a global hydraulic modeling network of
excellence. His deep technical interest coupled with an ability to see the big
picture though the client’s point of view makes him an invaluable asset to any
water or sewer infrastructure project.
Relevant Project Experience
Combined Sewer Overflow Long Term Control Plan Reassessment,
Department of Public Works, City of South Bend, Indiana –Nick was lead
hydraulic modeler for a re-evaluation study of the City’s Combined Sewer
Overflow Long Term Control Plan (LTCP) in a multi-disciplinary team engaged
to develop a more efficient plan providing greater benefits to public health and
safety at a reduced cost to ratepayers. His specific duties included conversion of
the City’s schematic SWMM5 hydraulic model to a detailed InfoSWMM model
integrated into GIS; re-calibration, performance validation and value engineering
of the existing LTCP; and development of a new alternative LTCP including
conveyance, storage, and green infrastructure projects.
Wet Weather Consent Decree Program, Department of Public Works, City
of Baltimore, Maryland – Nick was hydraulics lead for the City of Baltimore
Wet Weather Consent Decree Program Management Team led by the MWH/
LBWS Joint Venture. The PMT was responsible for delivering a $1B sewer
rehabilitation and construction program in compliance with a Modified Consent
Decree under negotiation with regulators. On-going, completed and in-progress
tasks include development of a Sewer Capacity Certification program for
new developments, re-structuring of City InfoWorks ICM database, ad-hoc
evaluations of system hydraulics, and attendance at meetings with Department
Chiefs and the Director.
Combined Sewer Master Plan, Department of Public Works, Village of Oak
Park, Illinois – Nick was the lead project engineer and sanitary sewer modeler
responsible for building and analyzing an Infoworks combined sewer model of
the Village’s combined sewer network. This model build required coordination
and optimization of the use of several sources of Village data for the creation of
a complete, detailed all-pipes model network developed in conjunction with the
creation of an updated Village sewer atlas. The all-pipes Infoworks CS model
was then used to develop implementable solutions to CSO flooding problems
such as downspout disconnection, inlet restriction, green/passive stormwater
management, and traditional conveyance improvements.
CDWM Area 2 Master Plan, Chicago Dept. of Water Management, Chicago,
Illinois - Nick was project modeler responsible for identification of deficiencies
and development, analysis, and performance verification of sewer improvements
for relieving basement flooding issues within a 42,000-acre region of the city.
Projects were developed using Infoworks combined sewer software, and included
a combination of conveyance improvements and underground storage projects.
Stantec Consulting Services Inc.
2335 Highway 36 West | St. Paul MN 55113-3819
March 31, 2017
Barb Thompson
City of Prior Lake
17073 Adelmann Street SE
Prior Lake, MN 55372
Reference: Proposal for Professional Engineering Services – Sanitary Sewer System Plan Update:
REVISED FEE
Dear Ms. Thompson:
Per a discussion with Jason Wedel, we have revised our proposed hours and fee for the Prior Lake
Sanitary Sewer System Update.
Our revised not-to-exceed fee is $48,500 and reflects the time and effort to create InfoSWMM models to
analyze your existing and proposed sanitary sewer system. Our previous estimate incorrectly assumed
that the City had an existing model already in place, and that only revisions to that model would be
needed. A table of our hours and fees by task is attached.
Thank you for this opportunity to modify our proposed fee. All other items from the proposal that was
submitted to the City on March 17, 2017 are still applicable. Please contact me if I can provide any
additional information to assist you in your decision process. Our team looks forward to working with the
City of Prior Lake.
Sincerely,
STANTEC CONSULTING SERVICES INC.
Daniel J. Edgerton, PE
Senior Associate
(651) 604-4820
dan.edgerton@stantec.com
Da
n
Ed
g
e
r
t
o
n
Ty
l
e
r
Jo
h
n
s
o
n
Ni
c
k
S
t
e
p
i
n
a
C
a
r
l
C
h
a
n
Wa
t
e
r
Re
s
o
u
r
c
e
s
En
g
i
n
e
e
r
Ho
n
g
y
i
Du
a
n
Hours by Task
Pr
o
j
e
c
t
I
n
i
t
i
a
t
i
o
n
/
M
a
n
a
g
e
m
e
n
t
8
6
1
4
$
2
,
2
1
4
$
2
,
3
0
0
Da
t
a
C
o
l
l
e
c
t
i
o
n
2
2
0
4
2
6
$
3
,
4
8
2
$
3
,
5
0
0
Co
n
f
i
r
m
D
e
s
i
g
n
F
l
o
w
s
5
2
4
2
2
3
3
$
4
,
0
7
7
$
4
,
1
0
0
Ex
i
s
t
i
n
g
S
a
n
i
t
a
r
y
S
e
w
e
r
S
y
s
t
e
m
A
n
a
l
y
s
i
s
5
6
0
4
2
4
7
5
$
9
,
3
9
7
$
9
,
4
0
0
Pr
o
p
o
s
e
d
S
a
n
i
t
a
r
y
S
e
w
e
r
S
y
s
t
e
m
A
n
a
l
y
s
i
s
1
0
5
0
4
2
4
7
0
$
8
,
9
5
2
$
9
,
0
0
0
Re
p
o
r
t
P
r
e
p
a
r
a
t
i
o
n
1
0
4
0
6
5
6
$
7
,
7
9
2
$
7
,
8
0
0
Me
e
t
i
n
g
A
t
t
e
n
d
a
n
c
e
(
6
s
t
a
f
f
-
l
e
v
e
l
m
e
e
t
i
n
g
s
,
4
p
u
b
l
i
c
p
r
e
s
e
n
t
a
t
i
o
n
s
)
3
6
2
4
6
0
$
9
,
5
6
4
$
9
,
6
0
0
Ex
p
e
n
s
e
s
$700
$
7
0
0
To
t
a
l
H
o
u
r
s
7
6
2
2
4
1
0
6
8
1
0
3
3
4
Ho
u
r
l
y
R
a
t
e
$
1
7
7
$
1
3
3
$
1
2
5
$
1
7
7
$
1
3
3
$
1
1
7
Co
s
t
b
y
I
n
d
i
v
i
d
u
a
l
$
1
3
,
4
5
2
$
2
9
,
7
9
2
$
1
,
2
5
0
$
1
,
0
6
2
$
1
,
0
6
4
$
1
,
1
7
0
$48,490
$
4
8
,
5
0
0
Pr
i
o
r
L
a
k
e
S
a
n
i
t
a
r
y
S
e
w
e
r
S
y
s
t
e
m
P
l
a
n
U
p
d
a
t
e
3/30/2017
Ta
s
k
Ho
u
r
s
E
s
t
i
m
a
t
e
Cost by TaskCost by Task (Rounded)