•
‘oçT—17-2U03
FRI
12:42
FM
P.
002/004
WILLETT,
HOFMANN & ASSOCIATES,
INC.
CONSULTING ENGINEERS
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SECOND
STR~T
C.KW~U.ET1,P.S. P,L6.
DIXON~
ILUNOIS
61021
BNFi’~OH.kH~N8ERG,
FL,
P.LL
8182844311
FAX1162844386
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October 14
2003
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Illinois Environmental Protection Agency
Bureau ofWater
Division ofWater Pollution Control
Compliance Assurance Section
P.O. Box 19276
Springfield, Illinois 62794-9276
Re:
City ofPolo,
Illinois
Wastewater
Treatment
Plant
NPDES Provisional Variance Request
Gentlemen:
On behalfofthe City ofPolo, we are requestinga provisional variance fortheir NPDBSpermit limits
at
the
wastewater
treatment
plant
per
the
application
requirements
stated
in
TITLE
35:
Environmental Protection Agency; Part 180:
Procedures and Criteria for ReviewingApplications for
Provisional Variances;
Subpart
B:
Applications for Provisional Variances; Section
180.202 b).
We
have addressed below the 13
items in Section
180.202 b) on an item by item basis.
1,
The
provisional
variance
requested
is to
waive
the
CBOD5~Suspended
Solids
and
Ammonia
Nitrogen discharge limit and allow the City to discharge settled sewage to the Buffalo Creek for a
period of
45
days,
The provisional
variance
is
needed to
allow the
City to
replace the
center
column
of the
rotary
distributor
mechanism
in
their
secondary
trickling
filter process.
W~
request a start date for the 45-day provisional variance ofOctober
14.
2003 and
an end date for
the
provisional variance ofNovember 27. 2003.
2.
The provisional variance is needed to
allow the
City to replace
the
center column of the rotary
distributor mechanism
in their secondary trickling filter process.
The center
column
allows the
four (4) distributor arms to rotate and discharge the wnstewater from the primary clarifier evenly
over the trickling filter media.
Currently the operator has to manually rotate the distributor
arms
periodically during the
day to get a somewhat even distribution over the trickling filter media,
The City ofPolo is a small rural community with a population of2,477 located approximately 13
miles northwest ofDixon,
Illinois
in southwest Ogle County.
3.
The
City of Polo
wastewater treatment
plant processes approximately
0.313
mgd
of domestic
sewage
a
day
for treatment and
discharge
to the
Buffalo
Creek.
The
City of Polo
operates
a
tertiary treatment
plant,
which
includes
fine
screening, primary settling,
a secondary
trickling
filter,
final
settling,
a tertiary
aerated
lagoon, a wet weather flow
lagoon,
anaerobic digestions
and sludge drying beds.
809
E.
SECOND
STREET
57
AI~?O~?
DRIVE
212 THIRD AVENUE
UNCOLNSHIRE BUSINESS
CENTER
DIXON, ILLINOIS 61021
ROCKFORD. ILLINOIS
61109
STERLING.
ILLINOIS 61061
701
~SINGTON
ROAD
81$
284-3381
FAX
815
284-3385
615 964.2897
FAX
815 964-2899
815 626-sssl
FAX a~s
&.s6~5
JOLI5T,
ILLINOIS 60455
815
725-4525
‘0CT-~17—2003FRI
12:43
PM
P.004/004
Illinois Environmental ProtectionAgency
Bureau of Water
Division of’Water Pollution
Control
ComplianceAssurance
Section
October
14, 2003
Page 3 of3
would
have
to
construct
additional
treatment
facilities
or
haul
their
wastewater
to
another
treatment
plant
with
reserve
capacity
to
handle the
City’s
wastewater
loadings,
These
other
alternatives arc neither practical nor economically feasible,
10,
The
provisional
variance
requested
is
to
waive
the
CBOD5,
suspended
solids
and
ammonia
nitrogen
discharge
limit
requirements
of the
City’s
NPDES
permit
and
allow
the
City
to
discharge settled sewage to the Buffalo Creekfor a period of45 days.
Provisional Variance L.iTnits
NPDES
Limit
Variance Limit
Average Daily
Average Daily
Max. Daily
CBOD5
10mg/i
50mg/I
75mg/I
Suspended
Solids
12 mg/i
50 mg/I
75 mg/i
Ammonia Nitrogen
1.4 mg/I (Apr
-
Oct)
6,4 mg/i
8.5.mg/i
2.2 mg/i
(Nov
-
Mar)
6,4 mg/I
8.5
mg/I
11.
The Cityhas not applied for a provisional variance within the last year.
12.
The
City
operates the
wastewater treatment
plant
in
accordance
with
the
requirements of its
NPDES PermitNo. 1L0030449 which expires
on
October 31, 2004.
13. The.Water Pollution
Control
Board does not have
any compliance orders
in
effect
against the
City ofPolo.
Please
feel
free
to call
ifyou have any questions.
Sincerely,
WILLETr, IiOFMANN
& ASSOCIATES, INC.
BY__
Matt
Hansen, P,E.
MH:rv
cc;
JeffVan Oosten, Mayor
Susie
Corbitt, Clerk
Richard Jack$, Alderman
Mike Gauthier, WWTP Operator
File
-
‘‘ocT-17--2003
FRI
12:42 FM
WILLETT, HOFMAJ~W
&
A
ssocu TES, INC.
ConsultingEngineers
809
East Second Street
P.O.
Box 387
Dixon,
Illinois 61021-0387
Phone: 815/284-3381
Fax:
815/284-3385
e-mail:
mhanssn@willetthofmann.com
website:
www.wilietthofmann.com
P. 001/004
212 Third Avenue
Sterling,
Illinois 61081
815/626-3861
c-mall:
r~t~~ex1
.com
Rookford, IllinoIs
81109
815/984-2897
e-mail:
wharock~xta.com
Lh~coinehIreBusiness Center
701
E$slnQton Road
Joliet,
llHnois
80435
8f 5/725-4525
DATE~
October
17, 2003
FAX TRANSMITTAL
TO:
IEPA
FROM:
Matt Hansen
ATIN:
Jay Balmer
FAX#:
217.557.1407
NUMBER OF
PAGES
INCLUDING
THIS
SHEET
REFERENCE:
Polo,
Illinois
Provisional Variance
Request
3
We
revised
the letter to include the
start
and end
date of the provisional variance and the average
daily and
maximum daily limits.
Call if you
have any questions.
CONVIDENTIALXTY NOTICE
This
fac,imile trinunitaion
and
tha
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att.chad to
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ronthe ~priet~try mitteilala
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ire
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and
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intended to!cly for
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uac of the rrci~Lrnridentfflcd.
Any diaclolura, dtplieation, dissemination or other use of tith document
and
itt
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other
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If
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are
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Identilled recipient,
thea.
rnatcrkl,
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been
transmitted
In
you
In
error,
I’iasse
call
us
immediately
to
ar~ngc
for
our rcIntval
of
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doormcnt~