HomeMy WebLinkAbout1994-03-28 94-150 ORDERCepnall action
Data March 28 19°A
Item No. 94-150
ItemlSubircl: Authorizing Execution of Contract with CO2M-BILL - Sludge
Disposal Options Study
personable 0epertmenl: Engineering
For many years the City of Bangor has disposed of its sewage treatment
plant sludge by a very low coat composting operation. With the startup
of the n ondary plant, the quantity of sludge has increased
significantly, and as you are aware, the secondary sludge has characteristic
which have caused odor control problems with our present commenting
operation. Furtheraore. the existing carbonating site is located on the
Airport property in fairly close proximity to future development areas and
to not a good site for a long term operation. Last month City staff met
with the Municipal Operations Committee and recommended that a study be
undertaken to Identify and evaluate long is= Option$ for disposal of
wastewater treatment plant sludge. Subsequently an EPP foruch a study
a issued and proposals received from five engineering firms. Attached
is a memorandum from the City Engineer which a ar
summarizes proposals received.
Based o interviews of the top three proposalsand considerable staff
discussion, it is recommended that CH2M-HILL be selected to undertake the
sludge disposal optionnsstudy.
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94-150
A,,ipwd to Cuum9oo Cohen March 28, 1994
CITY OF BANGOR
(TITLE.) 4tlTl�BXy.........AVWvxieivg.Dxecatian. af...Contxavt With CHIM-HT4L Sludge.........
Disposal Options Study
BY 614 City waves of Cffy of Beeper.
ORDERED.
TEAT the City Manager be and hereby is authorized toexcute a r
With CH2M-HILL to perform a sludge disposal options study ata total cost not
to exceed $25,000.00; and be it further
ORISM, THAT the sum of Twenty -Five Thousand Dollars ($25.000.00) he
transferred from Sever Account no. 80-02-10-99 to a account to be established
by the Finance Director to cover the cost of said study
IN CITY COUNCIL
Hauch 28, 1994
Passed
ML
CI CLE
F
94-150
O HDER
Title,
nutborizing Execution of Contract with
......................................
CH2M-HILL - Sludge Disposal Options Study.
......................................
Aa -40-
ctnnriln,an
94-150
CITY OF gmMoR, MAINE
Engineering Department
MEMO March 21, 1994
To: Finance Committee
From: James D. Ring, City Engineer
Subject: Sludge Disposal Options Study
Last month City staff met with the Mun1..Ope. Committee and
recommended that a study be undertaken to identify and evaluate
long term options for disposal of Wastewater Treatment Plant
wage sludge. In response to an RFP, proposals to perform the
study were received from the following five firms:
Engineering Dynamics, Inc. - Bangor, Maine
Proposed cost to do the study is $16,900. The firm is
relatively new (established Sn 1989) a" has not had a lot of
experience in this type Of work.
Woodard d Curran - Bangor, Maine
Proposed fee to complete study is $19,500. Work is
proposed to be performed by the Bangor office With support
from the Portland office. Me Company 1s quite familiar With
the Bangor Treatment Plant and w characteristics, has
recently performed leachate studforacceptanceceptance of leachate
from the Sawyer Landfill, has performed s similar sludge
disposal studies and wastewater treatment plant upgrade projects,
but mostly for smaller communities.
Wright -Pierce - Topsham. Naine
Proposed fee is $23,000. This firm has seem experience
in sludge disposal, and has recently done the design work for
an enclosed composting facility for Lewiston and Auburn. They
have also done some similar projects for some other smaller Maine
communities and some projects in Massachusetts.
CH M -HILL - Boston. Mass.
Proposed fee to perform sludge option study is $25,000.
This is a sizable company. which is very familiar With the new
Secondary Treatment Plant and its operation due to their design
experience with the facility. Me Company has extensive experience
in all facets of sludge disposal Options.
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94-150
Thermo Consulting Engineers - Williston, persons
This firm has proposed a fee of $46,000 to perform the
services requested. Thermo Consulting Engineers submitted a
proposal in conjunction with the James W. Sewall Company in Old
Town, and appears to have had a fair amount of experience in
dealing with sludge disposal.
All proposalsextensively reviewed by City staff
which included Jim king, eCity Engineer; Ralph Sieben, Wastewater
Treatment Plant Superintendent; Hence $bibles, Assistant City
Solicitor who has been working extensively with technical staff
on sludge and wastewater issues: John Murphy, City Engineer's
office{ and Brad Moore, Chief operator of the Treatment Plant.
Staff met after an initial review of all proposals and unanimously
agreed that the three beet proposals for out purposewas submitted
by Woodard 6 Curran, CM2 HILL, and Wright -Pierce. Interviews
lasting approximately 1 1/2 hours each were conducted last Thursday
and Friday with all three firms. Subsequent to the interviews staff
has met and identified Woodard d Curran and C11214 -MILL as the top two.
Bath of these firms were contacted with follow-up questions by the
City Engineer. Although staff felt that these were clearly the
two beat proposals, there are
clear differences in each firm
n
approach. Woodard 6 Cur strongly advocates thachanges in the
operation of the Treatment Plant be considered to possibly reduce
sludge production. CM2M-HILL feels that although ease benefits
may be obtained in this regard, flexibility in plant operation and
its tolerance to fluctuations in wastewater characteristics may be
compromised. Basad on considerable discussions and analysis of
these proposals, coupled with our experience with both of these
firms on technical projects, staff reccinamends that CHZM-HILL be
selected to undertake the Sludge disposal options study.
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