Signed Contract_Strand Associates, Inc. for Catfish Creek Old Mill Road Sanitary Sewer Pumping Station and Force Main Design ServicesCity of Dubuque
City Council Meeting
Consent Items # 19.
Copyrighted
May 17, 2021
ITEM TITLE: Signed Contract(s)
SUMMARY: Strand Associates, Inc. for Catfish Creek Old Mill Road Sanitary Sewer
Pumping Station and Force Main Design Services.
SUGGESTED Suggested Disposition: Receive and File
DISPOSITION:
ATTACHMENTS:
Description Type
Catfish Creek Old Mill Road Sanitary Sewer Pumping Supporting Documentation
Station and Force Main Design Services
Memo Staff Memo
$,ill STRANDjmg ®
Strand Associates, Inc.®
910 West Wingra Drive
°f Madison, WI 53715
EXCELLENCE IN ENGINEERING (P) 608.251.4843
Task Order No. 21-05
City of Dubuque, Iowa (OWNER)
and Strand Associates, Inc.' (ENGINEER)
Pursuant to Agreement for Technical Services dated June 9, 2016
Project Information
Services Name: Catfish Creek Old Mill Road Sanitary Sewer Pumping Station and Force Main Design
Services
Services Description: Provide design services related to a new 15-mill ion -gal lon-per-day (mgd) sanitary
sewer pumping station.
Scope of Services
ENGINEER will provide the following services to OWNER.
Design Services
1. Attend a kickoff meeting with OWNER to review the project scope, available information,
project goals, and schedule. Prepare and distribute meeting minutes.
2. Perform hydraulic calculations for sizing and routing the influent sanitary sewer, influent channels,
wet well, pump selections, force main, and head works modifications at the Water Resource
Recovery Center (WRRC). Figure I provides a preliminary conceptual layout of the force main
and related facilities between the proposed pumping station and the WRRC. Figure 2 provides a
preliminary conceptual layout of the influent sewers and proposed pumping station site.
3. Perform preliminary selection of pumps to meet a firm pumping capacity of 15 mgd while also
considering typical average and diurnal flows. Include considerations for energy efficiency and
maintenance.
4. Prepare a preliminary basis of design memorandum that includes design of the following elements:
a. New gravity sanitary sewers from the existing intercepting sewers to the new Catfish
Creek Old Mill Road Pumping Station.
b. Pumping Station:
(1) Pumping station building. Pumping station \Nill have a dry well/wet well
arrangement.
(2) Dry pit submersible pumps in the lower level of the building.
(3) Influent channel grinders or screening upstream of the wet well.
(4) Emergency backup power generator.
(5) Biological odor control unit for the pumping station.
ALC:ppp\R:\NIAD\Documents\Agreements\D\Dubugue, City of("IA)\TSA.2016\TO\2021\I 154.087,21-05.dl x
Arizona I Illinois I Indiana I Kentucky I Ohio I Texas I Wisconsin www.strand.com
Strand Associates, Inc.'
City of Dubuque
Task Order No. 21-05
Page 2
April 14, 2021
Force Main:
(1) Force main sizing,
(2) Force main alignment and locations of pressure/vacuum relief stations.
(3) Identification of potential easements to be acquired.
Modifications to the existing WRRC headworks to accommodate the new force main.
C. Design memorandum will be submitted to OWNER and will be used to support
OWNER's Iowa Department of Natural Resources (IDNR) State Revolving Fund (SR ,)
Facilities Plan submittal.
Attend an approximately 30 percent design review meeting with OWNER to review the
preliminary basis of design and design criteria for preparation of future Bidding Documents.
Prepare and distribute meeting minutes.
Prepare an opinion of probable construction cost based on the 30 percent documents.
Provide weekly updates to OWNER on project progress. Weekly updates will alternate between
written e-mail updates and virtual discussions with OWNER.
Miscellaneous Design Services
I. Assist OWNER with IDNR SRF loan submittal. A total of 32 hours are included for this task.
Compensation
OWNER shall compensate ENGINEER for Services under this Task Order a lump sun of $363,730.
Schedule
Services will begin upon execution of this Task Order, which is anticipated the week of April 19, 2021.
Services are scheduled for completion on December 31, 2021.
TASK ORDER AUTHORIZATION AND ACCEPTANCE:
ENGINEER:
STRAND ASSOCIATES, INC.'
Z4;c� z
Jo . I . Bunker at
Corporate Secretary
OWNER:
CITY OF DUBUQUE
A� 1wk 4/28/2021
ichael C. Van Milligen Date
City Manager
AL('pppR i%iAD�Dantments:AgrLementsl)'Dubuque.('itcnf(1A)VISA201(N7'(R2021511?4OR721-05dma
www.strand.com
n
0
n
v
C
c
c
m
0
D
0-0
MM
0 M
m '-
nz
zn
a�
z0
00
Mz
mn
>�
mC
vC
a
rnr
D r-
n
FO
� C
rn�
Cn
a !-w4
� TI y V/
0
cyl
0 M —y
1 Mz
wv
p Catfish Creek Interceptor Capacity Improvements
Map Prepared by.
City of Dubuque
^- 1 inch = 500 feet Engineenng Dwisron
W E 50 West 13th street
�,.. Dubuque, lava 52001
200100 0 200 400 600 800 Feet Phone (563) 5894270
Fax. (563) 589-4205
2
n
r-
C
M
z M
_j M
r-
Cn
0 MZ
* A z
< M >
0 M M
n U) -<
a > 0
C z 0
can
C 0
0 M
C
M
C
0 > F
* cl) r-
> >
0
C
Z —q
U)
=i
M
> (1)
. -4 r
01 Q OM 44
4:- C
Ch M >
-4 Z
- I VZO
Catfish Creek Interceptor Capacity Improvements
Old Mill Road Litt Station - Gavitv fV1ain Modifications
Proposed Old Mill Road Lift Station
Initial Firm Capacity: 15 MG0
Future Firm Capacity: 30 MG0
F.F. Elev: 624 00
Inv_ In Elev: 588 00
Wet Well Fir Elev: 578,00
Proposed 60" Gravity Main, 32 LF
Existing 8" Gravity Main
Proposed 4' Dia. Manhole
Depth: 8'
Existing Gravity Main to
be Abandoned in Place
Proposed 54"GravitY Main. 93 LF
Proposed T Dai- manhole
Depth: 25'
Proposed 54" Gravity Main. 116 LF
Proposed T Dia. Manhole,
Depth: 24.75'
Existing 18- South Fork
Catfish Creek Interceptor
Sewer
1 inch = 100 feet
100 50 0
100 Feet
Existing 24" Catfish Creek
ree
Interceptor Sewer
Proposed TDis. Manhole
Depth 19'(13V-PaSS System)
Proposed 48" Gravity Main
135 LF (By -Pass System)
Proposed T Dia. Manhole
Depth W (By -Pass System)
Proposed 48" Gravity Main
80 LF (By -Pass System)
Proposed 8'x8'JunGtion Structure
`W
ith Sluice Gate (By -Pass -System)
Depth: 27'
Existing 24" Gravity Main to
4 Remain- (By -Pass System)
R.W.
r,t.pnsed 36" Force Main
u--E LF
Proposed 7-Way Fiber Optic
Conduit and Vaults
4A 00 LF & 3 Vaults
EM-11—MA
,Map Prepared by:
City of Dubuque
Enqinenng Division
50 West 131h Street
Dubuque, Iowa 52001
Phone (563) 589,1270
THE C
DUUB-.'&-TE
Masterpiece on the Mississippi
TO: Michael C. Van Milligen, City Manager
FROM: Gus Psihoyos, City Engineer
Dubuque
MI-Ameriea Clq
V.1�� 1NAL, A K I 1 N 1 F
2007-2012.2013
2017*2019
SUBJECT: Catfish Creek Sanitary Sewer Collection System Pump Station and
Force Main Improvements (CIP#7102607)
DATE: May 17, 2021
INTRODUCTION
The purpose of this memo is to provide information regarding potential improvements to
the Catfish Creek Sanitary Sewer system in the vicinity of Old Mill Road.
BACKGROUND
The older sections of the Catfish Creek Sanitary Sewer (CCSS) that deliver wastewater
to the Catfish Creek Pump Station (CCPS) were constructed circa late 1960s. It is
common for sanitary sewer pipes to remain in service for 60 years or longer. However,
when sizing an interceptor sewer it is not common to design it to handle predicted flows
more than 50 years into the future, most often a 25-year timespan is considered. The
CCPS was last upgraded in 1995 based on predicting growth over the next 20-30 years,
consistent with a 25-year life for a lift station.
Despite challenges due to terrain (i.e. steep slopes, bluffs, shallow rock, etc.), the City
has experienced significant growth within the Catfish Creek sewershed in the last 20
years. Based on land use mapping in GIS, and only considering some of the
sewersheds that have been developed within the tributary area, the design flow to the
CCSS and the CCPS has grown by 6.5 MGD (million gallons per day). Considering that
the design capacity of the CCPS is only 7.5 MGD, it becomes clear that the
effectiveness of the CCSS and the CCPS needed to be re -assessed.
The City hired Strand in late 2018 to develop a better understanding of the hydraulic
capacity of the Catfish Creek Sanitary Sewer collection system. Both dry and wet
weather flows were of interest, as well as, under existing and potential future conditions.
The analysis of the Catfish Creek Sanitary Sewer and the Catfish Creek Pump Station &
Force Main involved the implementation of a flow metering program in the spring and
summer of 2019 and the building of a computer model calibrated to actual measured
flows to better understand the existing flow and existing capacity within the system. The
computer model was created using XP-SWMM which is based on the EPA's SWMM
model.
As a result, the FY20-24 CIP budget includes funding to develop a master plan to
assess what the overall utility system needs are today and into the next few decades
that would allow for continued development and growth. The demands placed on the
CCPS will be a part of this assessment.
On January 4, 2021, a State Revolving Fund (SRF) Planning and Design Loan Intended
Use Plan (IUP) application in the amount of $350,000 was submitted to the State for the
Catfish Creek Pump Station & Force Main Project (that) involves system improvements
to address wet -weather related overflows at the Catfish Creek Pump Station and
provide capacity for future development within the Catfish Creek sewer shed.
In February of 2021, the City Council adopted Resolution 47-21 authorized an
agreement with the Iowa Finance Authority for the issuance of Sewer Revenue Capital
Loan Notes, Series 2021 B, in the amount of $350,000 for the Catfish Creek Pump
Station and Force Main Project improvements.
DISCUSSION
In late April of 2021, the City executed Task Order 21-05, hiring Strand to provide
engineering analysis necessary for helping the City develop a Facility Plan for the
Catfish Creek Sanitary Sewer system as a prerequisite to utilize State Revolving Fund
loan proceeds to construct improvements to the City's sanitary sewer system. The
Facility Plan must be reviewed and approved by the Iowa Department of Natural
Resources (IDNR).
As outlined by the IDNR, the Facility Plan "assembles basic information; presents
design criteria and assumptions; examines alternate projects with preliminary layouts
and cost estimates; ... offers a conclusion with a proposed project for (City)
consideration; and outlines official actions and procedures to implement the project."
Task Order 21-05 shows preliminary, conceptual drawings of one of the options to be
considered, a new pumping facility located near Old Mill Road and Kelly Lane. It is not
the only option to be considered. As the Facility Plan takes shape, begins to focus in on
a recommended option, City staff meets with property owners that would be impacted to
inform them of the potential improvements and gather their feedback. Once the Facility
Plan is complete, it is only an engineering recommendation subject to review and
approval by the City Council.
ACTION TO BE TAKEN
No action requested. This memo is to provide information only.
Attach.
Prepared by Deron Muehring
cc: Steve Sampson -Brown, Project Manager
Deron Muehring, Civil Engineer
Todd Irwin, Engineering Technician