Water Pollution Control Plant Design IDNRReviewMasterpiece on the Mississippi
TO: The Honorable Mayor and City Council Members
FROM: Michael C. Van Milligen, City Manager
SUBJECT: Water Pollution Control Plant Design Recommendation
DATE: February 24, 2010
Water Pollution Control Plant Manager Jonathan Brown recommends City Council
authorization for Stand Associates to submit the design for the Water Pollution Control
Plant upgrades to the Iowa Department of Natural Resources for review, and further
authorize City staff to complete and submit the application for a construction permit.
I concur with the recommendation and respectfully request Mayor and City Council
approval.
Jonathan Brown has a short presentation.
Michael C. Van Milligen
MCVM:jh
Attachment
cc: Barry Lindahl, City Attorney
Cindy Steinhauser, Assistant City Manager
Jonathan R. Brown, Water Pollution Control Plant Manager
Dubuque
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All-America City
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Masterpiece on the Mississippi
TO: Michael C. Van Milligen, City Manager
FROM: Jonathan R. Brown, WPCP Manager
SUBJECT: WPCP Design Recommendation
DATE: February 23, 2010
INTRODUCTION
The purpose of this memo is to present the design for the Water Pollution Control Plant
(WPCP) upgrades and to request that Strand Associates be authorized to submit this
design to the Iowa Department of Natural Resources (IDNR) for review.
BACKGROUND
The direction of the City of Dubuque's WPCP has been established as a high priority by
the City Council. A process of facility planning was approved and RFP's for the Water
Pollution Control Facility Plan were submitted to council on February 5, 2007.
Consultant selection to prepare the Facility Plan was approved by City Council in May
2007 and Strand Associates of Madison WI was contracted to proceed with planning.
The Facility Plan was submitted to IDNR in June 2008 for approval. In October 2008 the
team of Strand Associates /IIW Engineers was selected by council to proceed with the
design of the WPCP upgrades based on the concepts developed in the Facility Planning
process. In January 2010 90% design documents were presented to City Staff for
review. The next step of the process is to present the design documents to the City
Council for their authorization to submit the design to IDNR for review and to apply for a
construction permit. The construction permitting process is initiated as planning for
construction begins and must be submitted to IDNR at least 120 days in advance of the
date for starting construction.
DISCUSSION
Dubuque
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Strand Associates has reached the 90% design level and submitted the design
documents for review by City Staff. The design includes improvements to nearly all
portions of the existing WPCP. The following is a brief summary of the recommended
improvements:
Influent Screening
• Replace the existing screens with fine screens
• Install screenings washer /compactor
Grit Removal
• Replace the existing grit classifiers
• Eliminate the need for dewatered grit conveying by reorienting the grit classifiers
• Reconfigure grit pump discharge piping
• Reduced plugging potential of grit removal system
Primary Treatment
• Remove domed covers and replace with weir covers only
• Construct 4 primary clarifier
• Refurbish existing clarifiers
Biological Treatment
• Continue with High Purity Oxygen (HPO) activated sludge, including hauling
liquid oxygen to the plant
• Replace aeration mixers (27)
• Replace HPO controls for all three trains
• Repair basin tanks
• Seal concrete deck
Final Clarification
• Install new energy dissipating inlets
Effluent Disinfection
• Replace chlorination and dechlorination with ultraviolet light disinfection
• Reuse contact tank for UV installation
.Dissolved Oxygen and pH
• Install a cascade aeration system downstream of the UV basin. This will serve to
release CO2 to raise the effluent pH and dissolved oxygen.
Peak Flow Management
• Convert trickling filter structures to off-line flow equalization downstream of
primary clarification.
• Modify HPO basins to operate in contact stabilization mode of activated sludge
as needed.
Sampling and Flow Metering
• Provide two new influent samplers
• Provide new effluent sampler and sampling enclosure near the UV tank area.
Residuals Management
• Decommission the fluid bed incinerators.
• Construct new anaerobic digestion facilities (TPAD)
• Install new solids handling equipment in the existing incinerator building.
• Rehabilitate the WAS storage tanks and provide new WAS storage aeration
equipment.
• Provide two new dewatering centrifuges
• Convert existing incinerator building to biosolids cake storage and load -out
facilities.
Emergency Backup Power and Electrical Service
• Install new emergency power generation equipment.
• Replace electrical switchgear and distribution equipment from the 1970's and
before.
Administration Building, Laboratory, and Locker Rooms
• Laboratory Addition
• Refurbish the existing administration building
• Refurbish locker rooms in the administration building and the incinerator building.
• Energy Star rating for the Administration /Laboratory Building
Maintenance Building Addition
• Add two bays to existing Maintenance Building
Other Equipment Replacement
• Influent magnetic flow meters (2), effluent flow meter, and excess flow meter.
• Primary clarifiers drives
• Primary scum pumps
• Primary sludge transfer pumps
• RAS pump VFD replacement
• WAS pumps
• In -plant waste /recycle pumps
• Plant effluent/process water pump
• HVAC systems
Miscellaneous Piping, Valves, Mechanical and Other Components
• Influent channel gates
• Primary clarifier splitter gates
• MLSS splitter gates
• Final clarifier influent splitter gates
• Reroute in -plant waste /recycle pump discharge
• New septage /hauled waste receiving station
• New roofs on existing buildings
• New Cold Storage Building for City of Dubuque
upstream of the influent screens.
Engineering Department
Sustainability elements are included in many aspects of the design, most prominently in
the pursuit of energy star rating for the Administration Building and WPCP processes
and in the landscape design. The landscape design includes the use of rain gardens for
stormwater management and low mow /native prairie grasses. An attached file in the
electronic version of this memo has a complete set of the 90% design documents.
The opinion of capital costs for the recommended improvements is approximately $55
million dollars with a total project cost of an estimated $63 million dollars. In addition to
the capital cost estimate provided by our engineers a constructability analysis, which will
include a capital cost estimate, will be provided by an outside contractor prior to the
bidding process beginning. The attached document "Opinion of Capital Costs" gives a
complete breakdown of cost estimates.
This project is recommended to be financed by State Revolving Loan Funds, which offer
0% interest on the design loan and a below- market interest rate of 3.25% for the
construction loan. The impact on rates for construction of the Water Pollution Control
Plant upgrade is as follows:
FY2011 FY2012 FY2013 FY2014 FY2015 FY2016
Plant Renovation 6% 8% 9% 11% 8% 9%
Operating & Other Capital Needs 5% 5% 5% 5% 5% 5%
Total Sewer Fee Increase 11% 13% 14% 16% 13% 14%
The tentative schedule for the project is as follows:
Submit Design and Construction Application March 2010
IDNR Approval April 2010
Project Bid May 2010
Project Award June 2010
Construction Begins Summer 2010
Substantial Completion Summer 2013
ACTION REQUESTED
Submittal of the design documents and the application for a construction permit are the
next steps required for the Water Pollution Control Plant upgrades to proceed. I
respectfully request that the City Council authorize Strand Associates to submit the
design for the Water Pollution Control Plant improvements to the Iowa Department of
Natural Resources for review and that the City Council authorize City Staff to complete
and submit the application for a construction permit.
Attachments:
cc: Steve Brown, Project Manager
Jenny Larson, Budget Director
CITY OF DUBUQUE WPCP Modifications
OPINION OF PROBABLE CONSTRUCTION COST
PREPARED BY STRAND ASSOCIATES
PROJECT: WPCP MODIFICATIONS
DATE OF OPINION: January-10
COST INDEX ORIGINAL: 100
COST INDEX CURRENT: 100
ITEM DESCRIPTION
TOTALS
TOTALS
CONTIGENCIES (10%)
TOTAL CONSTRUCTION OPINION OF COST
Design & Bidding Services
Construction Phase Engineering Services (budget)
SUMMARY Printed on 1/14/2010
DIVISIONS DIVISION DIVISIONS DIVISION DIVISION DIVISION TOTALS PERCENT
OF
2 -10 11 Equipment 12 -14 2 & 15 Piping 15 HVAC 16 - Elect TOTALS
1 10 - Screening Building and Grit Facilities (IIW) $242,000 $759,400 $400 $100,000 $122,000 $555,600 $1,779,400 4%
2 20 - Primary Clarifiers & Primary Sludge Pump Statio $792,500 $1,063,300 $521,100 $357,000 9127,000 $112,100 $2,973,000 6%
3 28 - Primary Effluent Splitter Box $94,500 $33,500 $0 $38,000 $0 $0 9166,000 0%
4 30 - Excess Flow Equalization $348,100 $100,200 $0 9134,000 $0 $43,400 $625,700 1%
5 96 - Transformer Containment $47,300 $0 $0 $14,000 $0 $0 $61,300 0%
6 35 - Excess Flow Equalization Drainage Pump Statio $147,000 $234,100 $0 $114,000 $44,000 $249,600 $788,700 2%
7 32/37/38 - EF, Aeration Tank and RAS Splitter Boxes $119,900 $200,600 $0 $96,000 $0 $0 $416,500 1%
8 40 - Aeration Tanks $1,529,400 $3,698,200 $0 $261,000 $0 $232,200 $5,720,800 12%
9 45 - HPO Control Building $161,700 $15,000 $0 $53,000 9343,000 $2,799,100 $3,371,800 7%
10 50 - Final Clarifiers $217,000 $452,600 $253,800 $0 $0 $39,100 $962,500 2%
11 48 &53 - ML Splitter Box & FC Eff JB $111,000 $55,100 $0 $50,000 $0 $0 $216,100 0%
12 55 - RAS Pump Station $83,300 $60,800 $0 $14,000 $47,000 $511,900 $717,000 2%
13 60/62 - Disinfection (IIW) $572,500 $1,066,500 $78,000 $0 $25,000 $271,300 $2,013,300 4%
14 70 - Anaerobic Digestion $3,402,200 $3,943,100 $1,412,300 $542,000 $300,000 $542,400 $10,142,000 22%
15 75 - Solids Processing Building $1,453,400 $2,656,600 $1,066,500 $814,000 $600,000 $813,600 $7,404,100 16%
16 78 - WAS Storage Tanks $28,600 $97,400 $0 $38,000 $0 $0 $164,000 0%
17 80 - Administration Building $1,090,900 $0 $189,000 $384,000 $395,000 $601,200 $2,660,100 6%
18 90 - Maintenance Building $394,300 $0 $27,700 $42,000 $62,000 $143,500 $669,500 1%
19 92 - Septage Receiving Station $21,900 $228,100 $263,500 $154,000 $85,000 $75,000 $827,500 2%
20 93 - Cold Storage Building $122,800 $0 $127,300 $13,000 $28,000 $66,185 $357,285 1%
21 SITE WORK $946,000 $0 $0 $1,150,700 $0 $2,482,900 $4,579,600 10%
$11,926,300 $14,664,500 $3,939,600 $4,368,700 $2,178,000 $9,539,085 $46,616,185
PERCENT OF TOTALS 26% 31% 8% 9% 5% 20% 100%
DIVISION 1 $834,841 $1,026,515 $275,772 $305,809 $152,460 $667,736 $3,263,133
$12,761,000 $15,691,000 $4,215,000 $4,675,000 $2,330,000 $10,207,000 $49,879,000
$1,276,100 $1,569,100 $421,500 $467,500 $233,000 $1,020,700 94,988,000
$14,037,100 $17,260,100 $4,636,500 $5,142,500 $2,563,000 $11,227,700 $54,867,000
OPINION OF TOTAL PROJECT COST $62,973,000
$3,006,000
$5,100,000
IOWA DEPARTMENT OF NATURAL RESOURCES
Wastewater Disposal System Construction Permit
Application Fee Form
OWNER:
ADDRESS:
PROJECT IDENTIFICATION:
fl $100 Fee enclosed
32 -3202
IDNR Cashier's Use Only
0945 - 542 -NPDE -0570
Please sign and return this form with a check or money order payable to "Iowa
Department of Natural Resources ". Place it and the check or money order on top of
other Construction Permit Application documents.
Effective beginning July 1, 2006, Applications for Construction Permits for wastewater disposal systems
required by Iowa Code 455B.173 and rules in Iowa Administrative Code 567 IAC 64, must be
accompanied by the fee required by Iowa statute (HF2540).
The fee is $100 for each application, regardless of project size and project type including sanitary sewers,
pump stations, treatment units or a combination thereof. The fee shall be submitted with the certified
engineering documents necessary to apply for a construction permit (plans, specifications and related
application schedules A, F, and G as well as the appropriate schedules identified on page 2 of Schedule A).
The construction permitting process is initiated as planning for construction begins. Planning coordination
and submittal of preliminary engineering reports or facility plans precedes submittal of technical documents
necessary to constitute a construction permit application. The application fee is not necessary when
submitting a planning document but must accompany construction permit application documents. A fee
should accompany each permit application received on or after July 1, 2006.
Failure to submit a fee with the application may delay the processing of a construction permit. If you have
any questions regarding the application fee, please contact Ronda Hensley at 515/281 -8982 or
Ronda.Hensley @dnr. iowa.gov
Signature of owner or representative
Telephone or email contact
Send with application to:
Iowa Department of Natural Resources, Wastewater Engineering Section
Wallace State Office Building
502 East 9 Street
Des Moines, IA 50319
APPLICANT
ENGINEER
OWNER
FIRM
ADDRESS
ADDRESS
REPRESENTATIVE TELEPHONE
PROJECT OFFICER TELEPHONE
PROJECT IDENTIFICATION
ESTIMATED START DATE *
ESTIMATED COMPLETION DATE
PLEASE RESPOND TO ALL QUESTIONS YES NO
1. Has an engineering
report, facilities plan or other information previously been submitted for this project?
❑ ❑
If Yes =>
PROJECT IDENTITY
DATE SUBMITTED
2. Does the
project and construction permit application, as submitted, follow the recommendations, design
loadings, construction schedule, permit limits, and conclusions of the approved engineering report or
facilities plan? ❑ ❑
If No => Provide the design basis and technical information justifying all changes.
3. Are there three complete sets of plans and specifications accompanying this application?
❑ •
For a minor gravity sewer extension within the meaning of 455B.183.3 Code of Iowa and Design
Standard 11.1, two complete sets will be adequate for expeditious approval. For more complex projects,
three sets of plans and specifications may be requested.
4. Are approved
standard specifications a part of this application?
❑ ❑
If Yes =>
APPROVED STANDARD SPECIFICATIONS OF
DATE APPROVED
(municipality or firm)
5. Does each
set of plans and specifications or engineering report accompanying this application contain a
"professional engineering seal" executed in conformance with 542B.16, Code of Iowa? ❑ ❑
If No => Processing will be delayed pending receipt of applicable design schedules and certified plans,
specifications or engineering report.
6. Is this a joint wastewater and water supply project? ❑ ❑
If Yes => A construction premit application for the water supply project should be submitted separately to the
Water Supply Section. A water supply permit fee may be required.
7. Is the applicant to provide treatment of effluent resulting from this construction? ❑ ❑
If No => A Sewage Treatment Agreement (DNR Form 29) executed by the authority providing treatment must
accompany this application.
8. Is a new or amended operation permit necessary to use the facilities described in this application? ❑ ❑
If Yes => A new or amended permit to operate may be requested prior to the receipt of a construction permit.
9. Is any waterline located within 10 feet; or any private or public well, lake, or public recreation area located
within 400 feet of the proposed construction? ❑ ❑
If Yes => Identify and locate the facility(s) relative to the proposed construction.
10. Will construction
inspection be conducted by a licensed engineer employed by the applicant?
❑ ❑
If No =>
NAME OF ENGINEERING FIRM CONDUCTING INSPECTION
11. Will this
project utilize CWSRF loan funds? ❑ ❑
CERTIFICATION
APPLICANT
ENGINEER
I certify that I am the authorized representative of the owner and
I certify that all aspects of design included in this application
state that the project identified above is approved by the owner.
conform to applicable standards contained in Chapter 567 IAC
64, or that an explanation and justification for any proposed
variations from such standards is attached. I am familiar with the
information contained in this application, and to the best of my
knowledge, such information is complete and accurate.
SIGNATURE DATE
SIGNATURE DATE
* Estimated Construction Start Date: Complete applications must be submitted at least 120 days in advance of the date for
starting construction in accordance with Rules 567 IAC 60.4 and 64.2
PLEASE COMPLETE THE SCHEDULE CHECKLIST ON THE FOLLOWING PAGE OF THIS FORM
DNR form 28A (Apr 04)
Exhibit 8A
Iowa Department of Natural Resources Wastewater Section
Construction Permit Application
SCHEDULE A . G eneral Information
542 -3129