HomeMy Public PortalAbout2/09/1999 public hearingCity of Greencastle
City Hall
Four East Walnut Street
Greencastle, Indiana 46135
Pamela S. Jones
Clerk-Treasurer
GREENCASTLE COMMON COUNCIL
PUBLIC HEARING
TUESDAY, FEBRUARY 9,1999 6:00 P.M. TZOUANAKIS SCHOOL
The Greencastle Common Council met for a Public Hearing Tuesday, March 9, 1999, 6:00 p.m.
at Tzouanakis Intermediate School. Mayor Michael called the meeting to Order. On the Roll
Call, the following were found to be present: Councilor Roach, Councilor Hammer, Councilor
Green, Councilor Baynard and Councilor Masten. Also present were: Tom Pitman from Baker
and Daniels, Mike Cline and Gary Ladd from Hannum, Wagle and Cline, Mike Brenner from
London Witte, City Attorney Trudy Selvia and Attorney Laurie Robertson.
This Public Hearing is in regard to the Preliminary Engineering Report and Rate Analysis for
Wastewater Treatment Facility. Mike Cline stated that if anyone has questions that are not
answered tonight, written questions will be accepted for the next ten days, all of which will become
a part of the record and forwarded to IDEM with the PER. Mike Cline distributed a Summary of
the PER and discussed these items with the Council and public. (see attached)
Councilor Hammer questioned if London Witte Group has rate analysis for different phases and
scenarios. Mike Brenner stated he has several different scenarios, but didn't know if this is the
appropriate time to discuss them.
The floor was opened for public questions and comments. There were no public comments at this
time.
Mike Cline reminded everyone that there is a copy of the PER on display at the Putnam Countv
Library and City Hall. Councilor Masten asked if copies of the Summary handed out tonight
could be placed with those copies for people to take if desired. CT Jones stated she will make sure
copies are available.
Attorney Tom Pitman asked that everyone present sign in on the sheet provided and stated an
Environmental Assessment Impact Statement will be mailed to everyone on the list.
Being no further business Councilor Roach made the motion to adjourn, seconded by Councilor
Masten. Vote was unanimous.
I_1
Nancy A. i hael, Mayor
®
Pamela
® CITY OF GREENCASTLE
WASTEWATER FACILITIES STUDY
CHAPTER 1
EXECUTIVE SUMMARY
1.0 INTRODUCTION
The Wastewater Facilities Study has been prepared for the City of Greencastle,
Indiana, by Hannum, Wagle & Cline Engineering and by Advanced Treatment
Sciences, Inc. for the purpose of planning for a new regional wastewater treatment
facility to treat the wastewater flows from anticipated growth areas, and to meet
the requirements of changing environmental regulations. Additionally, the study
has been prepared for the purpose of planning for a southside sewer interceptor;
intended to relieve the old and overloaded sewer system of current wastewater,
® eliminate existing lift stations and to transport wastewater that will be contributed
from future growth within and surrounding the community.
1.1 SUMMARY OF PROBLEMS
The City of Greencastle, Indiana, currently owns and operates a conventional
activated sludge wastewater treatment facility that discharges into the Big Walnut
Creek.
The existing treatment facility has several concerns for future operation,
including:
1. The wastewater facility is currently at 96% of its rated hydraulic capacity.
2. The community has received an early sewer ban warning from the Indiana
Department of Environmental Management (IDEM).
3. Chronic bypassing at the wastewater treatment plant must be eliminated.
According to IDEM records, a total of 102 bypasses were reported during
a 12 month period ending in 1997. No bypassing is permitted at the
wastewater treatment plant.
4. Excessive infiltration and inflow are creating a problem of hydraulic
overloading of the collection system and treatment plant during rain
® events.
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5. The city of Greencastle is experiencing residential, commercial, and
industrial growth and plans should be made for a continuation of this
growth.
6. Components of the existing treatment facilities date back to the 1930'5,
and many of the existing equipment items are nearing the end of their
useful life.
7. The proposed NPDES permit will require the wastewater treatment plant
to meet three new criteria: Ammonia- Nitrogen limitations, dissolved
oxygen limitations, and reduced chlorine residual in the disinfected
effluent.
The existing collection system has many problems which include:
1. The collection system experiences high peak flow conditions that are
largely caused by rain - induced inflow and infiltration.
2. The collection system is experiencing overloading during peak rain events.
3. The collection system is made up of sections of gravity sewer and many
lift stations. In the past, lift stations were built in locations without a
master plan; thus, some lift stations were built that could have been
combined, resulting in additional operation, maintenance and replacement
costs for the City.
4. The existing collection system is old, with some portions of the system
having been built in the 1930's or earlier. Many sewers were cut into
rock.
5. The future growth in the City is anticipated to occur primanly on the south
and eastem sides of the City. Thus, all wastewater contributed by those
new developments will need to be transported by a collection system to
the treatment plant, which is located on the west side of the City. Without
a new interceptor, flow from these growth areas would have to pass
through the old and overloaded sewers that exist between those areas of
future growth and the treatment plant.
6. The City of Greencastle is expected to continue growing residentially,
commercially, and industrially. Future area wide growth that could be
served could add as much as 0.80 million gallons per day (MGD) from
areas inside the current city limits and as much as 2.43 MGD for potential
growth areas immediately adjacent to the City to the southeast, east,
northeast, and north. When this occurs, the existing collection system will
not be able to meet the increased needs of the City.
1.2 PROPOSED IMPROVEMENTS
As stated earlier, there are many main areas of concem with the City wastewater
collection and treatment facilities that will need to be addressed in order to bring
the City into compliance with State and Federal standards and to facilitate a
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continuation of the residential. commercial, industrial and institutional growth
that the City is now experiencing.
In order to achieve these goals, the following recommendations should be
implemented:
Construction of a new, 2.4 MGD Wastewater Treatment Plant (WWTP)
on existing City-owned property to the west of the existing plant.
The new facility will be a vertical loop reactor (VLR) process that will be
capable of treating peak flows up to 24.0 MGD. The existing facility will
be left in place with all flow initially being diverted to the new facility
with a portion of the facility being converted to a class "A" pH stabilized
sludge processing and storage facility. The existing administrative and
laboratory facilities will remain in service at their present location.
The new plant will be designed to be expanded in the future up to an
ultimate design capacity of 4.8 MGD in average daily flow. A complete
description of the proposed facility is found in Chapter 6.
2. A new ` southside" interceptor sewer, 36 inches in diameter and
approximately 11,200 feet in length will be constructed. Additionally,
approximately 7000 feet of 15 inch diameter force main will be
constructed from the Fox Ridge lift station to the southside sewer
interceptor. This construction will partially relieve the existing sanitary
sewer collection system and facilitate future growth to the east, southeast
and south sides of the City.
Specifically, this sewer will have a design capacity of 3.11 MGD and will
e liminate the following existing lift stations:
A.
The Cornstalk Lift Station
B.
The South College Lift Station
C.
The South Jackson Lift Station
When the new interceptor is placed into service, it will have an initial
estimated daily flow loading of approximately 0.625 MGD. This volume
of flow will effectively be taken off of the existing and overloaded city
sewer collection system.
3. The City engineering and wastewater collection system staff continue to
investigate and correct rain induced infiltration/inflow over the next 10
years.
A system wide flow - monitoring program is recommended to be
0 undertaken in 1999 to assist these offices in assessing the scope of the
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problem and prioritizing specific areas for future investigative and
corrective efforts.
These recommendations should be accepted by the City Board of Public Works
and Citv Council then submitted to IDEM for their input and approval.
1.3 FINANCIAL CONSIDERATIONS
The preliminary cost estimate for a 2.4 MGD wastewater treatment facility and
installation of a southside gravity sewer interceptor is $10,936,502; which
includes non - construction costs. The new WWTF and interceptor will
significantly lower the annual operation, maintenance and replacement costs for
the entire system. Assuming project financing with the Indiana State Revolving
Loan Fund and the retirement of an existing sewer bond issue prior to incurring
the new SRF loan debt, the average monthly sewer bill is expected to increase by
approximately $12.84 per home per month. The estimated minimum monthly
sewer bill (300 ft 2 ) is expected to rise $4.74.
1.4 IMPLEMENTATION SCHEDULE AND PUBLIC INPUT
1.4.1 IMPLEMENTATION SCHEDULE
The proposed project is large in scope and will take several years to complete.
Once approval is received from the City Council and the Board of Public Works
the first step is to insure that the City is placed on the funding list for the State
Revolving Fund (SRF). This will involve a preplanning meeting at the Indiana
Department of Environmental Management then submittal of SRF pre - application
forms.
The SRF Preliminary Engineering Report (this study) should then be submitted
for review and approval. A public hearing will be held and verbatim meeting
minutes developed and submitted as a part of this process.
Since the City is working with the IDEM Compliance Section on correcting the
chronic bypassing problem in the shortest possible time, the design of the
recommended facilities will be initiated during the preliminary engineering study
review process. Any modifications required as a result of the study review
process will be incorporated into the design process.
Since it is recommended that the SRF financing not be finalized until the project
is bid (and the actual costs known), the City will need to arrange for interim
financing to cover all pre -bid costs, which include:
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IN
1. Design Engineering
2. Legal Services
3. Rate Consultant Services
4. Bond Consultant Services
5. Easement Costs
6. Administrative Costs.
It is possible that the City could borrow against existing bond funds to be repaid
at the SRF loan closing. The SRF Program may also offer interim financing.
Note that a 1991 bond issue could possibly be retired in advance to provide
revenue to cover any interim financing repayments.
Following completion of the design to the point where it is submitted to IDEM for
construction permit review, a much more detailed construction cost estimate can
be developed. At this point in time, the user rate study can be prepared, the bond
council can also complete their preliminary documentation. Any easements or
other project costs will also be developed and finalized during this IDEM permit
review period.
Once all the permits are approved and in place, the project can then be advertised
for bidding. The bids will be opened and held for up to 90 days as the SRF
loan/bond issue can be finalized, sold and closed during this period.
Once the financing is in place the contractor(s) can be issued their notice to
proceed. It is anticipated that the New W WTF will take approximately 20 months
to construct and the southside interceptor 12 months.
A preliminary implementation schedule was developed that anticipated project
financing and sewer rate adjustment in May of 2000 and project construction
completed in March of the year 2002- Refer to Figure 1.1 for the preliminary
implementation schedule.
1.4.2 PUBLIC INPUT
This wastewater facilities study has been developed using substantial input from a
"study session" group that has been meeting every month since June, 1997. This
group included representatives from:
The Mayor's office
The City Council
The Board of Public Works
The City Engineer's office
The City Legal Council
Special Legal Council
The WWTF Staff
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Hannum. Wa,gle & Cline Engineering Revised Jan., 1999 City of Greencastle
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The Water Plant Superintendent
The Putnam County Commissioner's Development Center
HWC Staff
ATS Staff
The Media
As the meetings progressed, alternatives to the selected plan as presented in this
report were developed and discussed at length, including: upgrading and
expanding the existing WWTF (eliminated by the Comprehensive Performance
Evaluation), installing flow equalization (hydraulically and site /volume limited,
VLP process could accommodate peak flows without equalization) and different
sites for the new WWTF (extensive soils investigation yielded fact that city -
owned land adjacent to existing plant was suitable and could be gravity fed).
Essentially, the altematives development and altematives screening that normally
are a part of this printed study were completed over the 12 month study session
period by the study group. This process allowed for much more involvement,
interest and education by the individuals involved than the typical completed
study then present final recommendation process. Meeting minutes for each
Wastewater Study Session Group meeting are included in Appendix A.
It is proposed that these monthly meetings continue through the design and
® construction phases.
Formal approval of this study in its final form will be solicited from the Board of
Public Works, the City Council, the Public and the Indiana Department of
Environmental Management.
Meeting minutes to the public hearing can be found in Appendix B. Also, Board
of Works and City Council Resolutions accepting this plan are included in
Appendix C.
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GREENCASTLE WASTEWATER SYSTEM UPGRADE
IMPLEMENTATION SCHEDULE
-- ITEM
DESCRIPTION
1998
1999
2000
2001
2002
I
Complete Planning, Submit
To IDEM, Interim Rate
Acljustment
2.
Design e
Com Dsg
p I --- I .. Engineering,
Submit for Permit
8/1
------
3
Receive Permit, Advertise And
Bid Project, Obtain Easements
2/1
-------
-
4.
Finalize Financing, Ad just
5/1
Sew Rates
5
Construct New Facilities
3/1
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