State Revolving Fund (SRF) Sponsored Project Proposal SummaryMasterpiece on the Mississippi
Dubuque
bierd
All-America City
1
2007
TO: The Honorable Mayor and City Council Members
FROM: Michael C. Van Milligen, City Manager
SUBJECT: State Revolving Fund (SRF)- Sponsored Project Proposal Summary
DATE: February 16, 2012
The Bee Branch Watershed covers approximately 6.5 square miles of the City of
Dubuque and is almost fully developed. Following an intense thunderstorm in 1999, the
City of Dubuque commissioned an engineering study and the development of the
Drainage Basin Master Plan. In addition to identifying at -risk properties, the Drainage
Basin Master Plan identified three major projects to provide flood control and water
quality improvement: the Carter Road Detention Basin; the expansion and improvement
of the 32nd Street Detention Basin; and the restoration of the Bee Branch Creek. The
City has completed the first two projects, and the Bee Branch project is currently under
construction.
For the most part, these projects address stormwater management on a regional scale -
after runoff has already been increased due to development. With the Bee Branch
Watershed Green Infrastructure Project, the City of Dubuque proposes to take
stormwater management a step further by managing it at the site, when rainfall hits the
ground. The Bee Branch Watershed Green Infrastructure Project includes over six
acres in permeable paver alleys and parking lots which will result in preventing almost
2,400 pounds of sediment and 750,000 cubic feet of runoff per year from entering the
Mississippi River. Green Infrastructure is an approach to stormwater management that
is cost - effective, sustainable, and environmentally - friendly. Green Infrastructure
management approaches and technologies infiltrate, evapotranspire, capture and reuse
stormwater to maintain or restore natural hydrology. At the largest scale, the
preservation and restoration of natural landscape features (such as forests, floodplains
and wetlands) are critical components of green stormwater infrastructure. On a smaller
scale, green infrastructure practices include rain gardens, porous pavements, green
roofs, infiltration planters, trees and tree boxes, and rainwater harvesting for non -
potable uses such as toilet flushing and landscape irrigation.
Through the Bee Branch Watershed Green Infrastructure Project, the City proposes to
install permeable interlocking concrete pavement at 42 different locations in the Bee
Branch Watershed. Approximately 40 locations will be green alleys for a total area of
approximately 219,000 square feet at an estimated cost of $8.75 million. Two
installations are proposed in parking lots over an area of approximately 49,000 square
feet at an estimated cost of $663,000. When constructed, the 42 different locations will
total approximately 268,000 square feet (6.2 acres) of pervious pavement for an
estimated total cost of $9.42 million. The City proposes to implement the project over
three years. To date, the City has converted four standard alleys to pervious, which is
approximately 1% of all alleys in the Bee Branch Watershed. This percentage would
increase to almost 20% upon completion of the Bee Branch Watershed Green
Infrastructure Project.
City Engineer Gus Psihoyos recommends City Council support to submit a proposal
summary to the Iowa Department of Natural Resources for State Revolving Loan Fund
Secondary Funding for the Bee Branch Watershed Green Infrastructure Project.
I concur with the recommendation and respectfully request Mayor and City Council
approval.
Michael C. Van Milligen
MCVM:jh
Attachment
cc: Barry Lindahl, City Attorney
Cindy Steinhauser, Assistant City Manager
Gus Psihoyos, City Engineer
2
THE CITY OF
Dui
Masterpiece on the Mississippi
TO: Michael C. Van Milligen, City Manager
FROM: Gus Psihoyos, City Engineer
DATE: February 15, 2012
SUBJECT: State Revolving Fund (SRF)- Secondary Funding Proposal Summary
Dubuque
had
All-America City
' 11'
2007
INTRODUCTION
This memorandum is to request Council support to submit a proposal summary to the Iowa Department of Natural Resources
for State Revolving Loan Fund Secondary Funding for the Bee Branch Watershed Green Infrastructure Project.
Through the Bee Branch Watershed Green Infrastructure Project, the City proposes to install permeable interlocking concrete
pavement at 42 different locations in the Bee Branch Watershed. When constructed, the 42 different locations will total
approximately 268,000 square feet (6.2 acres) of pervious pavement for an estimated total cost of $9.42 million and result in
approximately 2A00 pounds per year of total suspended solids (TSS) and 750,000 cubic feet of runoff going into the ground
rather than the Mississippi River.
BACKGROUND
During the 2009 Iowa General Assembly session, legislation was passed to allow a new method for funding water quality
protection. Senate File 339 amended the Iowa Code to add a new category of projects that can be financed with sewer
revenues. This new category, called "water resource restoration," includes locally directed, watershed -based projects to
address water quality impairments. Before this amendment, utility revenues could only be used for construction and
improvements for the wastewater system itself. With the new legislation, wastewater utilities can also finance and pay for
projects, within or outside the city limits, that cover best management practices for nonpoint source pollution control.
DISCUSSION
The Bee Branch Watershed covers approximately 6.5 square miles of the City of Dubuque and is almost fully developed.
Following an intense thunderstorm in 1999, the City of Dubuque commissioned an engineering study and the development of
the Drainage Basin Master Plan (DBMP). In addition to identifying at -risk properties, the DBMP identified three major projects
to provide flood control and water quality improvement: the Carter Road Detention Basin; the expansion and improvement of
the 32nd Street Detention Basin; and the restoration of the Bee Branch Creek. The City has completed the first two projects,
and the Bee Branch project is currently under construction.
For the most part, these projects address stormwater management on a regional scale - after runoff has already been
increased due to development. With the Bee Branch Watershed Green Infrastructure Project, the City of Dubuque proposes
to take stormwater management a step further by managing it at the site, when rainfall hits the ground. The Bee Branch
Watershed Green Infrastructure Project includes over six acres in permeable paver alleys and parking lots which will result in
preventing almost 2,400 pounds of sediment and 750,000 cubic feet of runoff per year from entering the Mississippi River.
Green Infrastructure is an approach to stormwater management that is cost - effective, sustainable, and environmentally -
friendly. Green Infrastructure management approaches and technologies infiltrate, evapotranspire, capture and reuse
stormwater to maintain or restore natural hydrology. At the largest scale, the preservation and restoration of natural
landscape features (such as forests, floodplains and wetlands) are critical components of green stormwater infrastructure. On
a smaller scale, green infrastructure practices include rain gardens, porous pavements, green roofs, infiltration planters, trees
and tree boxes, and rainwater harvesting for non - potable uses such as toilet flushing and landscape irrigation.
Through the Bee Branch Watershed Green Infrastructure Project, the City proposes to install permeable interlocking concrete
pavement at 42 different locations in the Bee Branch Watershed. Approximately 40 locations will be green alleys for a total
area of approximately 219,000 square feet at an estimated cost of $8.75 million. Two installations are proposed in parking
lots over an area of approximately 49,000 square feet at an estimated cost of $663 p00. When constructed, the 42 different
locations will total approximately 268,000 square feet (6.2 acres) of pervious pavement for an estimated total cost of $9.42
million. The City proposes to implement the project over three years. To date, the City has converted four standard alleys to
pervious, which is approximately 1% of all alleys in the Bee Branch Watershed. This percentage would increase to almost
20% upon completion of the Bee Branch Watershed Green Infrastructure Project.
City staff estimates that approximately $35 million is necessary to convert all alleys to pervious surface. The greatest benefit
of pervious pavement is that it allows water to go back into the ground - where it went prior to development. Although
sometimes more costly than other Green Infrastructure practices, pervious pavement is typically the most efficient at
removing pollutants from runoff because the pollutants are allowed to go back into the ground rather conveyed to another
practice that requires regular maintenance to remove the collected pollutants.
City of Dubuque staff used the computer models WinSLAMM and P8 to simulate the water quality benefit of the proposed
Bee Branch Watershed Green Infrastructure Project. P8 was used to determine the expected pollutant loading and runoff
volume, while WinSLAMM was used to determine the pollutant removal and volume abstraction percentages. WinSLAMM
was chosen for the removal percentages because it includes a specific calculation routine for pervious pavement, and it is
based on actual field observations, with minimal reliance on theoretical processes that have not been adequately
documented or confirmed in the field.
The models predict that the Bee Branch Watershed Green Infrastructure Project could reduce total suspended solids (TSS)
loading to the Mississippi River by approximately 67% and runoff volume by approximately 50 %. When fully constructed, this
project will result in approximately 2,400 pounds per year of TSS and 750,000 cubic feet of runoff going into the ground
rather than the Mississippi River. The EPA Fact Sheet "Permeable Interlocking Concrete Pavement" supports these results
by reporting a reduction in TSS of 67 -81 % and a 34 -66% reduction in runoff volume for designs with an underdrain.
RECOMMENDATION
I recommend that the City Council approve the attached resolution. City staff will discuss the proposal with DNR and IFA staff
during a meeting on Tuesday, February 21, 2012. If approved, the resolution will also be presented to show the City
Council's support for the Bee Branch Watershed Green Infrastructure Project.
PROJECT COST - BUDGET IMPACT
The City of Dubuque and the Iowa Housing Authority entered into a State Revolving Fund Loan agreement in the amount of
$64,885,000 on August 18, 2010 to upgrade the City's wastewater treatment plant. Terms of the loan include a 3% annual
interest rate and will be paid over 26 years with semi - annual interest payments due June 1 and December 1. Total interest
payments over the loan period will be approximately $33,201,730.05.
Of the $33,201,730.05 to be paid in interest, the City is requesting approximatley $9.4 million from the Iowa Department of
Natural Resources and the Iowa Finance Authority. If awarded, this amount will significantly improve the City's ability to
construct green alleys and will positively affect the City's budget.
ACTION TO BE TAKEN
I request the City Council to approve the attached resolution allowing the City to submit an application to the Iowa
Department of Natural Resources for State Revolving Loan Fund Secondary Funding for the Bee Branch Watershed Green
Infrastructure Project.
Prepared by:
cc:
Todd Shoemaker, Environmental Engineer
Barry Lindahl, City Attorney
Teri Goodmann, Assistant City Manager
Jenny Larson, Budget Director
David Lyons, Project Manager - Smarter Sustainable Dubuque
Todd Shoemaker, Environmental Engineer Deron Muehring, Civil Engineer
RESOLUTION NO. 36 -12
APPROVING AN APPLICATION FOR STATE REVOLVING LOAN FUND
SECONDARY FUNDING FOR THE BEE BRANCH WATERSHED GREEN
INFRASTRUCTURE PROJECT
Whereas, Iowa Code section 384.82 authorizes a city to carry out projects,
borrow money, and issue revenue bonds and pledge orders to pay all or part of
the cost of projects, which may include a qualified water resource restoration
project, such revenue bonds and pledge orders to be payable solely and only out
of the net revenues of the city utility, combined utility system, city enterprise, or
combined city enterprise involved in the project; and
Whereas, Iowa Code section 384.80(15) provides that a water resource
restoration project means the acquisition of real property or improvements or
other activity or undertaking that will assist in improving the quality of the water in
the watershed where a city water or wastewater utility is located; and
Whereas, Iowa Code section 384.84 provides that the governing body of a
city water or wastewater utility may enter into an agreement with a qualified entity
to use proceeds from revenue bonds for a water resource restoration project if
the rate imposed is no greater than if there was not a water resource restoration
project agreement; and
Whereas, City intends to enter into an agreement pursuant to Iowa Code
chapter 28E with the Dubuque Soil and Water Conservation District (District) to
undertake water resource restoration project that have been approved for water
quality improvements in the watershed where City's water or wastewater utility is
located; and
Whereas, City has prepared the Bee Branch Watershed Green
Infrastructure Project described in Exhibit A attached hereto (the Project); and
Whereas, City intends to submit an application to the Iowa Department of
Natural Resources for State Revolving Loan Fund Secondary Funding for the
Project.
NOW, THEREFORE, BE IT RESOLVED BY THE CITY COUNCIL OF
THE CITY OF DUBUQUE, IOWA:
Section 1. The Project is hereby approved.
Section 2. The City Manager is authorized and directed to submit an
application to the Iowa Department of Natural Resources for State Revolving
Loan Fund Secondary Funding for the Project.
Passed, approved and adopted this 20th day of February , 2012.
021412ba1
Attest:
fp, Ile.
Kevin Firnstahl, City Clerk
Rod/ D. Buol, Mayor
F:\ USERS \tsteckle\Lindahl\ ResolutionsW pprovingSRFApplication _021412.doc
2
THE CITY OF
Du13
Masterpiece on the Mississippi
BEE BRANCH WATERSHED
GREEN INFRASTRUCTURE SUMMARY
r[P F PUUI' [I,FP
SYCAMORE
* STREET
PURPOSE &BACKGROUND
Through the Bee Branch Watershed Green Infrastructure Project, the City proposes to install permeable
interlocking concrete pavement at 42 different locations in the Bee Branch Watershed. When constructed, the
42 different locations will total approximately 268,000 square feet (6.2 acres) of pervious pavement for an
estimated total cost of $9.42 million and result in approximately 2,400 pounds per year of TSS and 750,000
cubic feet of runoff going into the ground rather than the Mississippi River.
SUSTAINABLE
DUBUQUE
viable • livable • equitable
SUSTAINABLE DUBUQUE
Sustainability is defined by a community's ability to
meet the environmental, economic, and social equity
needs of today without reducing the ability of future
generations to meet their needs.
Since 2006, the Dubuque Mayor and City Council have
identified becoming a more Sustainable City as one of
theirtop priorities. To that end, our City continues to
implement a community- defined sustainability plan.
Sustainable Dubuque is a holistic approach to making
our community sustainable. Our model involves a
three -part approach that addresses:
• Environmental and Ecological Integrity
• Economic Prosperity
• Social and Cultural Vibrancy
ENVIRONMENTAL/ECOLOGICAL
NTFGRITY
1'464 ,vabt[
ECONOMIC
PROSPERITY
SOCIAL/CUL I Li i4tl
VIBRAM:1.
Dubuque is a community
Environmental Integrity
that values
Economic Prosperity
Social /Cultural Vibranc
Healthy Air: fresh, clean air,
reduced greenhouse gas
emissions and minimized
health risks.
Clean Water: water as the
source of life a nd seeks to
preserve and manage it in
all forms.
Regional Economy: a
diversified regional economy
with opportunities for new
and green markets, jobs,
products and services.
Green Buildings: a
productive and healthy built
environment.
Native Plants and Animals:
biodiversity through the
preservation, restoration
and connection of nature
and people.
Smart Energy Use: energy
conservation and expanded
use of renewable energy as
a means to save money and
protect the environment.
Healthy Local Foods: the
benefits of wholesome
food from local producers,
distributors, farms, gardens
and hunters.
Resource Management:
the benefits of reducing,
reusing and recycling
resources.
Community Knowledge:
education, empowerment
and engagement to achieve
economic prosperity,
environmental integrity and
social/cultural vibrancy.
Community Design: the
built environment of the
past, present and future
which contributes to its
identity, heritage and sense
of place.
Reasonable Mobility: safe,
reasonable and equitable
choices to access live, work
and play opportunities.
One of the 11 Principles to the Dubuque Model identified by
Dubuque citizens is Clean Water. Sustainable Dubuque is a
community that values water as a source of life and seeks
to preserve and manage it in all forms. The Bee Branch Watershed Green
Infrastructure Project would offera significant and measurable improvement
on water quality in the Bee Branch Creek and Mississippi River.
STATE REVOLVING LOAN FUND SECONDARY FUNDING
During the 2009 Iowa General Assembly session, legislation was passed to allow a new method for funding water quality protection.
Senate File 339 amended the Iowa Code to add a new category of projects that can be financed with sewer revenues. This new
category, called "water resource restoration," includes locally directed, watershed -based projects to address water quality
impairments.
Before this amendment, utility revenues could only be used for construction and improvements for the wastewater system itself.
With the new legislation, wastewater utilities can also finance and pay for projects, within or outside the city limits, that cover best
management practices for non point source pollution control.
3
EMPLOYMENT IMPACT
The Bee Branch Green Infrastructure Project will not only improve
water quality, but it will also create and preserve jobs. Following
guidance by the US DOT, a project the size of the Bee Branch Green
Infrastructure Project will create or preserve approximately
102 jobs over the three year project life.
t�
The City Manager will present a resolution to the City Council at their
February 20, 2012 regular meeting. If approved as anticipated, a copy
of the resolution will be attached to this document as ExhibitA for the
•
meting with Iowa DNR and IFA on February 22, 2012.
. d •
Creating a "linear park" along the open
milli!
waterway;
PROPOSAL SUMMARY
The Bee Branch Watershed covers approximately 6.5 square miles of the City of Dubuque and is almost fully developed.
Following an intense thunderstorm in 2999, the City of Dubuque commissioned an engineering study and the development
of the Drainage Basin Master Plan (DBMP). In addition to identifying at -risk properties, the DBMP identified three major
projects to provide flood control and water quality improvement: the Carter Road Detention Basin; the expansion and
improvement of the 32nd Street Detention Basin; and the restoration of the Bee Branch Creek. The City has completed the
first two projects, and the Bee Branch Creek Restoration Project is currently under construction.
For the most part, these projects address stormwater management on a regional scale — after runoff has already been
increased due to development. With the Bee Branch Watershed Green Infrastructure Project, the City of Dubuque proposes
to take stormwater management a step further by managing it at the site, when rainfall hits the ground. The Bee Branch
Watershed Green Infrastructure Project includes over six acres in permeable paver alleys and parking lots which will result in
preventing almost 2,400 pounds of sediment and 750,000 cubic feet of runoff per year from entering the Mississippi River.
BEE BRANCH CREEK RESTORATION PROJECT BACKGROUND
In May 1999, many Dubuque residents living in the 6.5- square mile Bee
Branch Watershed (Figure 1) experienced heavy rains that resulted in
significant basement flooding and costly furnace and foundation repairs.
Unfortunately, that scenario repeated itself in 2002, 2004, zolo and 2011
as heavy rainfall overthe watershed caused flooding in more than 1,100
homes and businesses. Among the causes were the frequent and intense
rainfall events, uncontrolled development from over 30 years ago, and
an undersized storm sewer system. Therefore, the City initiated the Bee
Branch Creek Restoration Project to replace almost one -mile of storm sewer
with a creek and floodplain that resembles the one that traversed the area
approximately 100 years ago.
The design of the restored creek meanders through a 15 to 25 -foot wide
flood management corridor. The location of the project will extend 4,50o
feet from the 16th Street Detention Basin north to Comiskey Park at 24th
and Elm Streets. This open waterway system will transition former industrial
use to commercial land -use that is compatible in nature with the adjacent
residential areas. The project was designed through a highly interactive
citizen engagement process and includes many amenities that enhance
the existing low income neighborhoods while providing a model to address
stormwater management and water quality.
RESTORATION PROJECT INCLUDES:
Daylighting 4,500 feet of buried creek;
Restoring creek and associated
floodplain;
• Lower Bee Branch overlook, floating bio-
island, rain gardens and bioswales;
Amphitheater adjacent to an elementary
school to provide opportunities for
outdoor education;
1 Recreation bike /hike trails that connect to
the urban bike system and to the regional
trails; and
Planting of over 1,000 trees,
neighborhood fruit orchards. and
community garden space.
5
RESTORATION PROJECT BENEFIT •
1
Reduces flood risk for over 1,1oo homes and
businesses;
Integrates land management, historic
preservation, natural preservation, and
watershed management in an urban area;
Creates a local amenity and tourist attraction
through a community engagement process; and
Supports 7 of ai City Sustainability Principles
Figure 1. Bee Branch Watershed and location of the Bee Branch Restoration Project
ioieBranc Basin
\, Carter Road Detention Basin
dole Branch Basin . i`
1
1
I -- Bee Branch Basin
Asbi
al it
i `�`•. of
�I
LLi —_ -
Sag Ile Creek Basin
i�,
1 °f
K@R \y
\
\ i\
\
\
`,\
\
32nd Street Detention Basin 11 `• \�
iS
'\ vs
' \
/
I - -___, Hdlceest `____`�� Game —yi -•� \ t
i -- - -- -- -- - -- \ \'a'
N\c,4 1 { tit i5 \
■ 1
l i� a \ 5.�,•
l 59 �i' 1�3 \
rthFork Catfish Creek Basin 1l \' \`a \
\ ` iJ i
/
\ \ J t
Bee Branch Creek Restoration Project
Eagle Poin Et in
Shiras Basin
Roosevelt Basin
Hamilton /St
fart7�asii�
I.____�_____ '\ _ .e.
f
Ice Harbor;
. 111
.., / i it/ i1 !j `�rds cri
` \\ �
dde Mdd le _EotkcC,afskr Efeek88sin _-_-___ ;�\ —• � r �
,Maus Paskrl asin
i i �l
Middle Fork Catfish Creek Basin'- 5 1 \
6 \ b),°O/s I51
ll
rt-,1
GREEN INFRASTRUCTURE
Green Infrastructure is an approach to stormwater management
that is cost - effective, sustainable, and environmentally friendly.
Green Infrastructure management approaches and technologies
infiltrate, evapotranspire, capture and reuse stormwater to
maintain or restore natural hydrology.
At the largest scale, the preservation and restoration of natural
landscape features (such as forests, floodplains and wetlands)
are critical components of green stormwater infrastructure. On a
smaller scale, green infrastructure practices include rain gardens,
porous pavements, green roofs, infiltration planters, trees and tree
boxes, and rainwater harvesting for non - potable uses such as toilet
flushing and landscape irrigation. Figure 2 shows a "green alley"
constructed in Dubuque as part of a 2010 "pilot" project.
Figure 2. Green alley pilot project in Dubuque.
PERMEABLE INTERLOCKING PAVERS
The Iowa Stormwater Manual differentiates porous pavement into three different types: pervious concrete pavement; porous asphalt
pavement; and permeable interlocking concrete pavers (PICP). Atypical detail of PICP design is provided in Figure 3.
Regardless of the material, the stormwater management principle is generally the same for each pavement: openings in the pavement
surface allow rainfall and runoff to be quickly transferred below the pavement into rapidly infiltrating soils or into a rock storage bed. The
rock storage bed then acts as an "underground pond" that holds water and allows it to infiltrate back into the ground.
Figure 3. Typical detail of a permeable interlocking concrete pavement (PICP)
2' (TYP)
VARES
SEE
NOTE 1
1% MN)
- LT' 11 Nlr
VARIES
(12' MIN,)
PERMEABLE CONCRE -E BLOCK PAVERS (3 116" DEPTH)
VARIES
(M1141
70 _T
A !WOO I
tr
2' (TYP)
VARIES
SEE
NOTE 1
GEOTECHNICAL FABRIC
R.C.C. CONCRETE COLLAR FOR
PERMEABLE BLOCK PAVERS
(SFF NOTE 1)
' OF ASTM NO. 57 STONE
(BASE COURSE)
— 12" OF ASTM NO. 2 STONE
(SUBBASE COURSE)
SUBGRADE (SLOPE 1% TO CENTER)
6 " DIA. D4AIN TILE \– 2 OF ASTM NO. 8 STONE
(W! 34,' CLEAN STONE) (BEDDING COURSE)
ALTERNATE 1;
PERMEABLE BLOCK PAVEMENT
PROPOSED TYPICAL SECTION - ALLEY LOCATION 15 TH - 1E TH
STA: 20 +82 TO STA: 23 +44
NOTE;
1. CONCRETE COLLARS SHOULD HAVE A MINIMUM SLOPE OF 0.5%
CONCRETE COLLAR SHALL MATCH EXISTING ELEVATION AT R.D.W.
7
GREEN ALLEY PROJECT
8
LOCATION, SCHEDULE AND COST
Through the Bee Branch Watershed Green Infrastructure Project, the City proposes to install permeable interlocking concrete
pavement at 42 different locations in the Bee Branch Watershed. Approximately 40 will be green alleys for a total area of
approximately 219,000 square feet at an estimated cost of $8.75 million. Two installations are proposed in parking lots over an
area of approximately 49,000 square feet at an estimated cost of $663,000. When constructed, the 42 different locations will
total approximately 268,000 square feet (6.2 acres) of pervious pavement for an estimated total cost of $9.42 million.
The City proposes to implement the project over three years. Table 1 outlines the annual schedule and budget for constructing
alleys and /or parking lots in 2012, 2013, and 2014.
Table i. Summary of proposed schedule and budget
Year Surface Area (sq ft) Cost
2012
Alleys
Parking Lots
69,776
0
$2,891,300
$0
2013
Alleys
Parking Lots
2014
Alleys
Parking Lots
87,376
49,315
61,440
0
$3,316,400
$663,213
$2,545,882
$0
TOTAL
267,907 $9,416,795
To date, the City has converted four standard alleys to pervious, which is approximately 1% of all alleys in the Bee
Branch Watershed. This percentage would increase to almost z0% upon completion of the Bee Branch Watershed Green
Infrastructure Project. City staff estimate that approximately $35 million is necessary to convert all alleys to pervious surface.
WATER QUALITY BENEFITS
The greatest benefit of pervious pavement is that it allows water to go back into the ground — where it went prior to
development. Althoug h sometimes more costly than other Green Infrastructure practices, pervious pavement is typically
the most efficient at removing pollutants from runoff because the pollutants are allowed to go back into the ground rather
conveyed to another practice that requires regular maintenance to remove the collected pollutants.
City of Dubuque staff used the computer models WinSLAMM and P8 to simulate the water quality benefit of the proposed
Bee Branch Watershed Green Infrastructure Project. P8 was used to determine the expected pollutant loading and runoff
volume, while WinSLAMM was used to determine the pollutant removal and volume abstraction percentages. WinSLAMM
was chosen for the removal percentages because it includes a specific calculation routine for pervious pavement, and
it is based on actual field observations, with minimal reliance on theoretical processes that have not been adequately
documented or confirmed in the field.
The models predict that the Bee Branch Watershed
Green Infrastructure Project could reduce total
suspended solids (TSS) loading to the Mississippi
River by approximately 67% and runoff volume by
approximately 50%. When fully constructed, this
project will result in approximately 2,400 pounds per
year of TSS and 750,000 cubic feet of runoff going
into the ground rather than the Mississippi River.
The EPA Fact Sheet "Permeable Interlocking Concrete
Pavement "supports these results by reporting a
reduction in TSS of 67 -81% and a 34 -66% reduction
in runoff volume for designs with an underdrain.
9
EXISTING STATE REVOLVING FUND LOAN
10
The City of Dubuque and the Iowa Housing Authority entered into a State Revolving Fund Loan agreement in the amount of
$64,885,000 on August i8, 2010 to upgrade the City's wastewater treatment plant. Terms of the loan include a one -time i%
initiation fee of $648,850, 3% annual interest rate, and a o.25% annual administration fee. The administration fee is based on the
requested loan amount until disbursements are finalized and then the administration fee is assessed against the outstanding
balance as of June 1 each year. The loan will be paid over 26 years with semi - annual interest payments due June 1 and December 1,
and an annual principal payment due June 1. Principal payments begin June 1 after the final loan distribution. It is estimated that
the first principal payment will be made June 1, 2014. Semi - annual interest payments will be made during the construction period.
A summary of the loan terms is provided in Table 2.
As of February 10, 2012, the City has received $38,043,784 in loan disbursements, including the roll in of $95,500 from the Plant
Study Loan and $3,200,000 from the Planning and Design Loan. Total disbursements plus loan initiation fee equals $38,692,634.
Total interest paid is $1,368,750 and is listed in Table 3.
Per the DNR guidance document for sponsored project applications, the City proposes that the August 2010 SRF loan and related
loan application be amended to allow the City to use a portion of the interest to pay costs of the Bee Branch Watershed Green
Infrastructure Project (Project). The City expects to enter into a separate construction contract for the Project and to request
Project - related disbursements at the same time it makes requests for disbursements for Wastewater Treatment Plant costs under
the existing loan.
Figure 4. Aerial view of wastewater treatment plant prior to construction.
Table 2. Loan summary
Loan Closing Date
August 18, 2010
Final Maturity Date
June 1, 2039
Loan Period in Years
26
Total Loan Amount Requested
$64,885,000.00
Less: 1% Initiation Fee
$648,850.00
Net Proceeds to Borrower
$64,236,150.00
Annual Interest Rate
3.00%
Total Interest
$33,201,730.05
Servicing Fee Rate
0.25%
Total Servicing Fees
$2,965,015.00
Total Loan Costs
$36,815,595.05
Table 3. Total interest paid on loan as of February 10, 2012.
Date Initiation
Annual
Administration Fee
Semi - Annual
Interest
Total
8/18/2010 $648,850.00
12/1/2010
6/1/2011
12/1/2011
$648,850.00
$37,307.00 $37,307.00
$162,213.00
$158,993.00 $321,206.00
$361,387.00 $361,387.00
TOTAL $648,850.00 $162,213.00 $557,687.00 $1,368,750.00
EXISTING 28E AGREEMENT
The adoption of Iowa Code Chapter 28E in 1965 provided political subdivisions with a great expansion of their authority for
intergovernmental cooperation. The essence of this legislation was to permit any governmental agency to undertake any
activity jointly with any other agency so long as each agency has the power
to undertake that particular activity on its own. As an example, since cities,
townships, counties, and schools can establish libraries, it became possible
for a library to be a joint undertaking by a combination of these types of local
governments.
The City of Dubuque and Dubuque County currently have a "28E agreement"
in place for an urban conservation program. The agreement created an urban
conservationist position to perform urban conservation and watershed related
activities pertinent to Dubuque County, the City of Dubuque, and the Dubuque
Soil & Water Conservation District. Among others, the Urban Conservationist
responsibilities include:
• Participating in any educational /outreach programs in accordance with the City's NPDES permit and stormwater/
watershed program.
• Providing technical assistance for any urban conservation activities, including, in -field assessment, design, and public/
private projects.
• Continuing a strong connection with the City's sustainability efforts, building upon needs and necessary improvements.
The City is in the process of creating a new 28E agreement for the SRF sponsored project option. A draft of the new 28E
agreement is attached as Exhibit B.
.!m
FOR MORE INFORMATION:
Lead point of contact for the City of Dubuque: Assisting with the project, all communications should copy:
Teri Goodmann
Assistant City Manager
City of Dubuque
50 West 13th Street
Dubuque, Iowa 52001
tgoodman @cityofdubuque.org
563- 589 -4110
David Lyons
Smarter Sustainable Dubuque Project Manager
dlyons @cityofdubuque.org
563- 564 -1232
SUSTAINAB
u i u • u
I)
WWW.CITYOFDUBUQUE.ORG /BEEBRANCH
11
RESOLUTION NO. -12
APPROVING AN APPLICATION FOR STATE REVOLVING LOAN FUND
SECONDARY FUNDING FOR THE BEE BRANCH WATERSHED GREEN
INFRASTRUCTURE PROJECT
Whereas, Iowa Code section 384.82 authorizes a city to carry out projects,
borrow money, and issue revenue bonds and pledge orders to pay all or part of
the cost of projects, which may include a qualified water resource restoration
project, such revenue bonds and pledge orders to be payable solely and only out
of the net revenues of the city utility, combined utility system, city enterprise, or
combined city enterprise involved in the project; and
Whereas, Iowa Code section 384.80(15) provides that a water resource
restoration project means the acquisition of real property or improvements or
other activity or undertaking that will assist in improving the quality of the water in
the watershed where a city water or wastewater utility is located; and
Whereas, Iowa Code section 384.84 provides that the governing body of a
city water or wastewater utility may enter into an agreement with a qualified entity
to use proceeds from revenue bonds for a water resource restoration project if
the rate imposed is no greater than if there was not a water resource restoration
project agreement; and
Whereas, City intends to enter into an agreement pursuant to Iowa Code
chapter 28E with the Dubuque Soil and Water Conservation District (District) to
undertake water resource restoration project that have been approved for water
quality improvements in the watershed where City's water or wastewater utility is
located; and
Whereas, City has prepared the Bee Branch Watershed Green
Infrastructure Project described in Exhibit A attached hereto (the Project); and
Whereas, City intends to submit an application to the Iowa Department of
Natural Resources for State Revolving Loan Fund Secondary Funding for the
Project.
021412bat
NOW, THEREFORE, BE IT RESOLVED BY THE CITY COUNCIL OF
THE CITY OF DUBUQUE, IOWA:
Section 1. The Project is hereby approved.
Section 2. The City Manager is authorized and directed to submit an
application to the Iowa Department of Natural Resources for State Revolving
Loan Fund Secondary Funding for the Project.
Passed, approved and adopted this day of 2012.
Roy D. Buol, Mayor
Attest:
Kevin S. Firnstahl, City Clerk
F:\ USERS\ isteckle \Lindahl \Resolutions\ApprovingSR FApplication_021412.doc
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Prepared by: Barry A. Lindahl, Suite 330, 300 Main Street, Dubuque, IA 52001 (563) 583 -4113
Return to: Barry A. Lindahl, Suite 330, 300 Main Street, Dubuque, IA 52001
28E AGREEMENT
BETWEEN
THE CITY OF DUBUQUE, IOWA
AND
DUBUQUE SOIL AND WATER CONSERVATION DISTRICT
FOR
WATER RESOURCE RESTORATION PROJECTS
This Agreement, dated for reference purposes the day of , 2012, is
made and entered into by and between the City of Dubuque, Iowa (City) and
Dubuque Soil and Water Conservation District (District).
Whereas, Iowa Code section 384.82 authorizes a city to carry out projects,
borrow money, and issue revenue bonds and pledge orders to pay all or part of the
cost of projects, which may include a qualified water resource restoration project,
such revenue bonds and pledge orders to be payable solely and only out of the net
revenues of the city utility, combined utility system, city enterprise, or combined city
enterprise involved in the project; and
Whereas, Iowa Code section 384.80(15) provides that a water resource
restoration project means the acquisition of real property or improvements or other
activity or undertaking that will assist in improving the quality of the water in the
watershed where a city water or wastewater utility is located; and
Whereas, Iowa Code section 384.84 provides that the governing body of a
city water or wastewater utility may enter into an agreement with a qualified entity to
use proceeds from revenue bonds for a water resource restoration project if the rate
imposed is no greater than if there was not a water resource restoration project
agreement; and
021412bat
Whereas, City and District are qualified entities to enter into an agreement
pursuant to Iowa Code chapter 28E to undertake water resource restoration project
that have been approved for water quality improvements in the watershed where
City's water or wastewater utility is located; and
Whereas, City and District desire to enter into this Agreement pursuant to
Iowa Code Chapter 28E for the purpose of carrying out water resource restoration
projects in the watershed where City's city water and wastewater utilities are
located.
NOW, THEREFORE, IT IS AGREED BY AND BETWEEN THE PARTIES
AS FOLLOWS:
SECTION 1. IDENTITY OF THE PARTIES.
1.1 The City of Dubuque (City) is a municipality of the State of Iowa, organized
and operating pursuant to Iowa Code Chapter 364. Its address is 50 West 13th
Street, Dubuque, Iowa 52001.
1.2 The Dubuque Soil and Water Conservation District (District) is a soil and
water conservation district established pursuant to Iowa Code section 161A5(1). Its
address is 350 East 3rd Street, Dubuque, IA 52001.
SECTION 2. PURPOSE.
2.1 The purpose of this Agreement is to provide for the manner in which the
parties shall cooperate with one another to successfully complete the water
resource restoration projects (the Projects), including but not limited to the following:
1) Riparian buffer acquisition, enhancement, expansion, or restoration.
2) Conservation easements.
3) Riparian zone or wetland buffer extension or restoration.
4) Wetland restoration in conjunction with an adjoining high - quality water
resource.
5) Stream bank stabilization and natural channel design techniques.
6) In- stream habitat enhancements and dam removals.
SECTION 3. NO SEPARATE ENTITY CREATED.
3.1 No separate legal or administrative entity shall be created by this Agreement.
3.2 A joint board of the parties known as the Watershed Water Resource
Restoration (the Board) shall be responsible for coordinating the Projects. The joint
board shall comprise City's Mayor and City Manager and District's Urban
Conservationist.
021412ba1
3.3 The Board shall meet from time to time during the term of this Agreement
but not less than quarterly to review the Projects.
SECTION 4. DURATION. This Agreement shall be in effect perpetually until
terminated pursuant to Section 10.
SECTION 5. POWERS AND DUTIES
5.1 The parties to this Agreement shall retain all powers and duties conferred by
law and shall assist each other in the exercise of such powers and the performance
of this Agreement.
5.2 City shall be responsible for:
1) Identifying opportunities for funding and in -kind support for the
undertaking of water quality and water improvement projects within
the watershed;
2) Identifying opportunities for infrastructure development and planning
capable of improving water quality in the watershed;
3) Providing support for the administration of any projects, including
technical, financial and clerical;
4) Securing such financing, including grants, loans and the issuance of
bonds or loan agreements, as City determines to be necessary or
desirable to achieve the objectives of the agreement;
5) Coordinating with the wastewater utility;
6) Designing and bidding of projects;
7) Administering contracts; and
8) Observing construction.
5.3 District shall be responsible for:
1) Identifying water quality impairments within the watershed;
2) Identifying water quality improvement opportunities within the
watershed;
3) Identifying best management practices for water quality and water
improvement most likely to be effective within the District;
4) Participating in any educational /outreach programs in accordance with
the City's NPDES permit and stormwater /watershed program; and
5) Continuing a strong connection with the City's sustainability efforts,
building upon needs and necessary improvements.
SECTION 6. MANNER OF FINANCING. The Board may solicit, accept and
receive donations, endowments, gifts, grants, reimbursements and other such funds
as necessary to support work pursuant to this Agreement.
3
SECTION 7. ENTIRE AGREEMENT.
7.1 This Agreement contains the entire agreement and integrates all of the terms
and conditions contained in and incidental to such agreement and supersedes all
prior negotiations and communications concerning this Agreement, oral or written,
between the parties, their agents, employees and representatives. No modifications
or waiver of any provision in this Agreement shall be valid unless in writing and
signed by all of the parties. If, for any reason, any provisions of this Agreement
shall be inoperative, the validity and affect of the other provisions shall not be
affected thereby.
7.2 If any provisions of this Agreement is found to be invalid by any court,
administrative agency, or tribunal of competent jurisdiction, the invalidity of any such
provision shall not affect the validity of the remaining provisions hereof.
7.3 This Agreement shall be binding upon and inure to the benefit of the parties
and their respective successors and assigns. The parties agree that neither City
nor District shall have the right to assign their rights and obligations hereunder to
any party without prior written consent of the other party, which consent shall not be
unreasonably withheld.
SECTION 8. GOVERNING LAW. This Agreement shall be governed by and
interpreted under the laws of the State of Iowa.
SECTION 9. AMENDMENTS. This Agreement may be amended at any time by
the parties. All amendments shall be in writing, signed by both parties, and filed in
an electronic format with the Iowa Secretary of State as required by Iowa Code
section 28E.8.
SECTION 10. TERMINATION. This Agreement shall terminate upon mutual
agreement of the parties.
SECTION 11. EFFECTIVE DATE. This Agreement shall take effect upon
execution by the parties as required by law, filing with the secretary of state and
recording with the county recorder.
SECTION 12. DISPUTE RESOLUTION. Any dispute between the parties arising
out of or within the scope of the interpretation, construction or application of this
Agreement shall, prior to the commencement of any formal legal proceedings, be
submitted to arbitration. Either party may submit to the other a written request for
arbitration. Within ten days after the date of such request, City and District shall
each select one arbitrator and notify the other party of the name and address of
such arbitrator. The arbitrators so selected shall within ten days after being notified
of their selection, select a third arbitrator and after doing so, shall notify City and
District in writing forthwith of the name and address of the third arbitrator. The
arbitration proceedings shall be governed by Iowa Code Chapter 679A.
4
CITY OF DUBUQUE, IOWA DUBUQUE SOIL AND WATER
CONSERVATION DISTRICT
By: By:
Roy D. Buol, Mayor Melvin Wilgenbusch, Chairman
By:
Kevin S. Firnstahl
City Clerk
STATE OF IOWA )
COUNTY OF DUBUQUE ) ss:
On this day of 2012, before me, a Notary Public in
and for the State of Iowa, personally appeared Roy D. Buol and Kevin S. Firnstahl,
to me personally known, and, who, being by me duly sworn, did say that they are
the Mayor and Acting City Clerk, respectively, of the City of Dubuque, Iowa; that the
seal affixed to the foregoing instrument is the corporate seal of the city, and that the
instrument was signed and sealed on behalf of the city, by authority of its City
Council, approved by the City Council of the City of Dubuque, Iowa, on the
day of 2011, and that they acknowledged the execution of the
instrument to be their voluntary act and deed and the voluntary act and deed of the
corporation, by it voluntarily executed.
Notary Public in and for State of Iowa
STATE OF IOWA )
COUNTY OF DUBUQUE ) ss:
This instrument was acknowledged before me on the day of
2012 by Melvin Wilgenbusch as Chairperson of the
Dubuque Soil and Water Conservation District.
Notary Public in and for State of Iowa
5