Document ID: EPA-HQ-OW-2003-0074-1324
Agency: epa
Document Type: Supporting & Related Material
Title: 
Posted Date: 2004-09-02T04:00Z

WPDES
Permit
No.
WI­
0046477­
02­
0
WPDES
PERMIT
STATE
OF
WISCONSIN
DEPARTMENT
OF
NATURAL
RESOURCES
PERMIT
TO
DISCHARGE
UNDER
THE
WISCONSIN
POLLUTANT
DISCHARGE
ELIMINATION
SYSTEM
General
Mitchell
International
Airport
is
permitted,
under
the
authority
of
Chapter
283,
Wisconsin
Statutes,
to
discharge
from
a
facility
located
at
5300
South
Howell
Avenue
Milwaukee,
WI
53207­
6189
to
Milwaukee
River
Basin
(
Kinnickinnic
River
via
Wilson
Park
Creek),
Root
River
Basin
(
Oak
Creek),
and
the
groundwater
in
these
basins
in
accordance
with
the
effluent
limitations,
monitoring
requirements
and
other
conditions
set
forth
in
this
permit.

The
permittee
shall
not
discharge
after
the
date
of
expiration.
If
the
permittee
wishes
to
continue
to
discharge
after
this
expiration
date
an
application
shall
be
filed
for
reissuance
of
this
permit,
according
to
Chapter
NR
200,
Wis.
Adm.
Code,
at
least
180
days
prior
to
the
expiration
date
given
below.

State
of
Wisconsin
Department
of
Natural
Resources
For
the
Secretary
By
_________________________
Al
Shea
Director,
Bureau
of
Watershed
Management
_________________________
Date
of
Signature
EFFECTIVE
DATE:
January
01,
2001
EXPIRATION
DATE:
December
31,
2005
WPDES
Permit
No.
WI­
0046477­
02­
0
General
Mitchell
International
Airport
TABLE
OF
CONTENTS
1
AIRPORT
CO­
PERMITTEES
1
1.1
TENANT
COVERAGE
1
1.2
CO­
PERMITTEE
LIST
1
1.3
CHANGE
IN
AIRPORT
TENANT
STATUS
1
2
APPLICABILITY
3
2.1
PERMITTED
AREA
3
2.2
AUTHORIZED
DISCHARGES
3
2.3
WATER
QUALITY
STANDARDS
3
2.4
MAXIMUM
EXTENT
PRACTICABLE
3
2.5
PROGRAM
RESOURCES
3
2.6
INDIVIDUAL
RESPONSIBILITIES
3
2.7
JOINT
RESPONSIBILITIES
4
2.8
NON
CO­
PERMITTEES
4
3
AUTHORIZED
DISCHARGES
5
3.1
STORM
WATER
DISCHARGES
5
3.2
PROCESS
AND
NON­
PROCESS
WASTEWATER
DISCHARGES
5
3.3
NON­
STORM
WATER
DISCHARGES
5
3.4
EXCLUSIONS
5
4
STORM
WATER
POLLUTION
PREVENTION
PLAN
7
5
INFLUENT
REQUIREMENTS
8
5.1
SAMPLING
POINT(
S)
8
5.2
MONITORING
REQUIREMENTS
8
5.2.1
Sampling
Point
701
­
Inflow
­
Bailey's
Pond
8
5.2.2
Sampling
Point
601
­
Receiving
Water
­
St.
Luke's
9
5.2.3
Monitoring
Special
Conditions
9
6
IN­
PLANT
REQUIREMENTS
11
6.1
SAMPLING
POINT(
S)
11
6.2
MONITORING
REQUIREMENTS
AND
LIMITATIONS
11
6.2.1
Sampling
Point
101
,
102,
and
103
11
6.2.2
Applicability
11
6.2.3
Operating
Requirements
11
6.2.4
Effluent
Limitations
and
Monitoring
Requirements
12
7
SURFACE
WATER
REQUIREMENTS
13
7.1
SAMPLING
POINT(
S)
13
7.2
MONITORING
REQUIREMENTS
AND
EFFLUENT
LIMITATIONS
13
7.2.1
Sampling
Point
(
Outfall)
001
­
Wilson
Park
Creek
Cargo
Ramp
13
7.2.2
Sampling
Point
(
Outfall)
003
­
Oak
Creek
14
7.2.3
Sampling
Point
(
Outfall)
007
­
Wilson
Park
CreekTerminal
Ramp
14
7.2.4
Monitoring
Special
Conditions
14
7.2.5
Discharge
Requirements
16
8
SCHEDULES
OF
COMPLIANCE
19
8.1
ANNUAL
INSPECTION
19
8.2
ANNUAL
REPORT
19
8.2.1
Purpose
19
8.2.2
Certification
19
8.2.3
Contents
19
WPDES
Permit
No.
WI­
0046477­
02­
0
General
Mitchell
International
Airport
8.3
FAILURE
TO
COMPLY
WITH
GLYCOL
CAPTURE
GOAL
19
8.4
DEICING
AND
ANTI­
ICING
INFRASTRUCTURE
20
9
STANDARD
REQUIREMENTS
21
9.1
REPORTING
AND
MONITORING
REQUIREMENTS
21
9.1.1
Monitoring
Results
21
9.1.2
Water
Quality
Sampling
and
Testing
Procedures
21
9.1.3
Recording
of
Results
21
9.1.4
Reporting
of
Monitoring
Results
21
9.1.5
Records
Retention
22
9.1.6
Other
Information
22
9.2
SYSTEM
OPERATING
REQUIREMENTS
22
9.2.1
Noncompliance
Notification
22
9.2.2
Unscheduled
Bypassing
22
9.2.3
Scheduled
Bypassing
23
9.2.4
Proper
Operation
and
Maintenance
23
9.2.5
Spill
Reporting
23
9.2.6
Planned
Changes
23
9.2.7
Duty
to
Halt
or
Reduce
Activity
24
9.3
SURFACE
WATER
REQUIREMENTS
24
9.3.1
Determining
Compliance
with
a
Water
Quality
Based
Effluent
Limitation
24
9.3.2
Appropriate
Formulas
for
Effluent
Calculations
24
9.3.3
Visible
Foam
or
Floating
Solids
24
9.3.4
Whole
Effluent
Toxicity
(
WET)
Monitoring
Requirements
25
10
SUMMARY
OF
REPORTS
DUE
26
WPDES
Permit
No.
WI­
0046477­
02­
0
General
Mitchell
International
Airport
1
1
Airport
Co­
Permittees
1.1
Tenant
Coverage
Airport
tenants
with
industrial
activities
associated
with
commercial
air
transportation
at
General
Mitchell
International
Airport,
may
be
co­
permittees
with
Milwaukee
County,
and
be
regulated
under
this
permit.
The
airport
co­
permittee
list
is
subject
to
change
according
to
Section
1.3.
A
tenant
must
be
permitted
if
they
meet
the
following
two
permitting
criteria:
1.
The
owner
or
operator
is
in
the
air
transportation
business
with
a
Standard
Industrial
Classification
code
of
4512,
4513,
1522,
or
4581.
and
2.
The
tenant
is
involved
in
maintenance,
fueling,
cleaning,
or
de­
icing.

1.2
Co­
Permittee
List
The
following
airport
tenants
have
filed
a
certification
with
the
Department
to
become
a
co­
permittee
under
this
permit:

CARGO
CARRIERS:
Evergreen
Aviation
Federal
Express
Freight
Runners
Express
United
Parcel
Service
COMMERCIAL
AIRLINES:
America
West
Airlines
American
Eagle
Airlines
Astral
Aviation
(
Skyway
Airlines)
ComAir
Airlines
Continental
Airlines
Delta
Air
Lines
Midwest
Express
Airlines
Northwest
Airlines
Sun
Country
Airlines
Trans
World
Airlines
United
Airlines
US
Airways
CORPORATE
HANGERS:
Cessna
Aircraft
Scott
Air
Charter
OTHER:
Signature
Flight
Support
Note:
Milwaukee
County
and
the
airport
tenants
identified
in
the
above
list
will
be
referred
to
as
the
co­
permittees.
Reference
in
the
permit
to
permittee
means
co­
permittee.

1.3
Change
in
Airport
Tenant
Status
Milwaukee
County
shall
promptly
notify
the
Department
when
it
becomes
aware
of
a
change
in
tenant
status
which
could
require
a
tenant
to
become
a
co­
permittee
(
or
otherwise
obtain
an
individual
permit)
or
to
be
deleted
from
the
co­
permittee
list,
by
submitting
information
about
the
change
to
the
Department.
If
the
tenant
desires
to
become
a
co­
WPDES
Permit
No.
WI­
0046477­
02­
0
General
Mitchell
International
Airport
2
permittee
instead
of
obtaining
an
individual
permit,
the
Department
shall
modify
the
permit
(
without
a
notice
as
allowed
under
s.
283.53(
2d)(
d),
Wis.
Stats)
by
issuing
a
new
airport
co­
permittee
list
which
identifies
the
tenants
covered
under
the
General
Mitchell
International
Airport
WPDES
permit.
Tenants
required
to
be
permitted
under
(
a)
or
(
b)
below
shall
submit
to
the
Department,
through
Milwaukee
County,
a
written
agreement
that
specifies
the
date
the
new
co­
permittee
assumes
responsibility
for
compliance
with
the
permit
and
liability
for
violations
of
the
permit.
The
following
situations
require
a
revision
to
the
airport
tenant
list:
(
a)
A
new
tenant
who
begins
operating
at
the
airport,
and
meets
the
permitting
criteria,
shall
be
added
to
the
airport
co­
permittee
list
unless
the
tenant
elects
to
obtain
an
individual
permit.

(
b)
An
existing
tenant
not
previously
identified
on
the
airport
co­
permittee
list,
who
meets
the
permitting
criteria,
shall
be
added
to
the
airport
co­
permittee
list
unless
the
tenant
elects
to
obtain
an
individual
permit.

(
c)
A
co­
permittee,
who
changes
their
name
from
what
is
currently
on
the
airport
co­
permittee
list,
shall
have
their
name
corrected
on
the
airport
co­
permittee
list.

(
d)
A
co­
permittee,
who
discontinues
their
activities
and
no
longer
operates
at
the
airport,
shall
be
removed
from
the
airport
co­
permittee
list.

(
e)
A
tenant
identified
on
the
airport
co­
permittee
list,
who
no
longer
meets
the
permitting
criteria,
shall
be
removed
from
the
airport
co­
permittee
list.

Note:
Refer
to
the
airport
co­
permittee
list
for
the
criteria
that
requires
a
tenant
to
be
permitted.
WPDES
Permit
No.
WI­
0046477­
02­
0
General
Mitchell
International
Airport
3
2
Applicability
2.1
Permitted
Area
This
permit
covers
areas
at
General
Mitchell
International
Airport
within
the
jurisdiction
of
Milwaukee
County,
contributing
to
discharges
from
the
airport's
separate
storm
sewer
system.
Separate
storm
sewer
system
means
a
conveyance
or
system
of
conveyances
including
storm
sewers,
roads
with
drainage
systems,
roadways,
catch
basins,
curbs,
gutters,
ditches,
constructed
channels
or
storm
drains.
Upstream
off
site
flows
into
the
separate
storm
sewer
system
from
outside
the
permitted
area
are
excluded
from
coverage
under
this
permit
and
are
not
the
responsibility
of
the
co­
permittees.
See
Section
3.4
for
exclusions
from
coverage
under
this
permit.

2.2
Authorized
Discharges
This
permit
authorizes
storm
water
point
source
discharges
to
waters
of
the
State
from
the
separate
storm
sewer
system
in
the
permitted
area.
This
permit
also
authorizes
the
discharge
of
storm
water
commingled
with
flows
contributed
by
process
wastewater,
non­
process
wastewater,
and
storm
water
associated
with
industrial
activity,
provided
such
discharges
are
regulated
under
this
or
other
WPDES
permits
or
are
not
significant
sources
of
pollutants.

2.3
Water
Quality
Standards
This
permit
specifies
the
conditions
under
which
storm
water
can
be
discharged
so
the
receiving
water
quality
standards
contained
in
chs.
NR
102
to
NR
105,
Wis.
Adm.
Code,
are
met
to
the
maximum
extent
practicable.
Except
as
otherwise
permitted
or
authorized
by
this
permit,
storm
water
discharges
may
not
contain
pollutants
which
would
cause
a
violation
of
water
quality
standards.
For
the
term
of
this
permit,
implementation
of
the
best
management
practices
in
the
storm
water
pollution
prevention
plan,
shall
constitute
compliance
with
water
quality
standards.
The
narrative
type
general
storm
water
discharge
limitations,
described
in
Section
7.2.5.1,
are
also
intended
to
address
water
quality
standards.

2.4
Maximum
Extent
Practicable
Permittees
shall
develop
and
implement
a
storm
water
pollution
prevention
plan
and
best
management
practices
designed
to
limit
to
the
maximum
extent
practicable
the
discharge
of
pollutants
from
the
separate
storm
sewer
system.
The
Department
shall
consider
other
environmental
problems
and
safety
requirements
facing
the
permittees,
and
will
emphasize
cost
effective
pollution
prevention
solutions
when
determining
what
is
practicable.

2.5
Program
Resources
Permittees
shall
provide
adequate
finances,
staff,
equipment,
and
support
capabilities
to
implement
their
storm
water
pollution
prevention
plan.

2.6
Individual
Responsibilities
Milwaukee
County,
as
the
owner
and
airport
authority,
shall
act
as
the
airport
representative
and
shall
coordinate
copermittee
efforts
to
achieve
permit
compliance.
Milwaukee
County
and
each
airport
tenant
identified
as
a
copermittee
is
individually
responsible
for:
(
a)
Compliance
with
permit
conditions
relating
to
discharges
from
the
separate
storm
sewer
system
where
it
is
the
operator.

(
b)
Storm
water
pollution
prevention
plan
implementation
on
portions
of
the
separate
storm
sewer
system
where
it
is
the
operator.

(
c)
Collection
of
monitoring
data
required
in
Sections
5,
6
and
7.
Agreements
may
be
established
between
copermittees
to
consolidate
monitoring
responsibilities.

(
d)
Compliance
with
annual
reporting
requirements
as
specified
in
Section
8.2,
relating
to
the
portions
of
the
airport's
separate
storm
sewer
system
for
which
they
are
responsible.
WPDES
Permit
No.
WI­
0046477­
02­
0
General
Mitchell
International
Airport
4
2.7
Joint
Responsibilities
Co­
permittees
are
jointly
responsible
for
permit
compliance
on
those
shared
portions
of
the
separate
storm
sewer
system
where
one
or
more
co­
permittees
jointly
discharge
to
or
operates
a
portion
of
the
separate
storm
sewer
system.

2.8
Non
Co­
Permittees
Discharges
by
non­
co­
permittee
tenants
may
not
cause
any
of
the
General
Mitchell
International
Airport
permittees
to
be
in
violation
of
the
terms
of
this
permit.
If
a
discharge
by
a
non­
co­
permittee
causes
a
violation
of
Wisconsin
law
or
regulation,
Milwaukee
County
will
examine
the
legal
obligation
of
the
non­
co­
permittee
under
the
tenant
lease
agreement
with
the
County,
and
will
take
whatever
action,
if
any,
it
deems
appropriate.
WPDES
Permit
No.
WI­
0046477­
02­
0
General
Mitchell
International
Airport
5
3
Authorized
Discharges
3.1
Storm
Water
Discharges
This
permit
regulates
storm
water
point
source
discharges
to
waters
of
the
State
from
the
permitted
area
upstream
from
the
outfalls
listed
in
Table
7.1.
Outfalls
003
and
007
have
several
drainage
basins
and
storm
water
inflow
points
associated
with
them,
including
inflows
from
off
site
of
the
permitted
area.
General
Mitchell
International
Airport
shall
not
be
held
responsible
for
discharges
tributary
to
the
airport
drainage
system
not
under
its
authority.
Portions
of
airport's
separate
storm
sewer
system
are
also
the
receiving
water.
Intermittent
or
marginal
streams
that
run
through
the
airport
have
been
channelized
into
ditches
or
directed
through
underground
separate
storm
sewers.
Outfall
003
is
a
channelized
ditch
with
dry
weather
flow,
and
is
a
tributary
to
the
Oak
Creek.
Outfall
007
is
the
confluence
of
two
large
concrete
enclosed
storm
sewers
with
dry
weather
flow,
and
is
part
of
Wilson
Park
Creek
tributary
to
the
Kinnickinnic
River.
Note:
There
may
be
other
minor
outfalls
or
discharge
points
where
runoff
may
leave
the
permitted
area,
such
as
intermittent
channelized
flow.
These
discharges
are
also
authorized.

3.2
Process
and
Non­
Process
Wastewater
Discharges
This
permit
also
regulates
wastewater
discharges
to
the
airport's
separate
storm
sewer
system.
These
discharges
include
the
following:
 
Deicing
and
anti­
icing
activities
 
Contaminated
groundwater
 
Oil
and
water
separators
3.3
Non­
Storm
Water
Discharges
Non­
storm
water
discharges
to
the
separate
storm
sewer
system
are
prohibited,
unless
the
discharge
is
innocuous
or
allowed
under
a
WPDES
permit.
Permittees
shall
evaluate
all
storm
water
outfalls
for
non­
storm
water
contributions
and
illicit
connections.
Methods
may
include
a
review
of
as­
built
schematics
or
drainage
plans
of
the
storm
water
collection
system,
end
of
pipe
screening
during
dry
weather,
dye
testing,
physical
inspection
of
the
storm
water
collection
system,
or
other
appropriate
monitoring.
Milwaukee
County
completed
this
evaluation
during
the
1994
dry
weather
screening
conducted
in
the
development
of
the
storm
water
pollution
prevention
plan.
Continued
inspections
for
non­
storm
water
discharges
shall
continue
as
appropriate,
with
a
repeat
evaluation
at
least
every
5
years,
to
achieve
and
maintain
compliance
with
this
condition.
If
an
evaluation
isn't
feasible
due
to
lack
of
access,
include
a
statement
explaining
why.

3.4
Exclusions
Excluded
from
coverage
under
this
permit
are
the
following:
(
a)
Areas
located
on
General
Mitchell
International
Airport
property,
which
are
segregated
from
the
industrial
activities
associated
with
the
airport,
such
as
office
building,
parking
lots,
and
undeveloped
areas,
may
not
need
to
be
permitted.
The
exclusion
status
shall
be
revoked
if
storm
water
runoff
from
areas
normally
excluded
mix
or
commingle
with
storm
water
drainage
from
pollution
sources
covered
under
the
storm
water
pollution
prevention
plan,
prior
to
discharging
from
the
permitted
area.

(
b)
Areas
off
site
or
upstream
from
the
permitted
area
which
discharge
into
the
separate
storm
sewer
system.

(
c)
Airport
tenants
who
do
not
meet
the
permitting
criteria.
Note:
Refer
to
the
airport
tenant
list
for
the
criteria
that
requires
a
tenant
to
be
permitted.

(
d)
Non­
storm
water
discharges
that
are
not
considered
illicit
discharges,
unless
identified
by
either
the
permittee
or
the
Department
as
a
significant
source
of
pollutants
to
waters
of
the
State.
Innocuous
non­
storm
water
discharges,
as
listed
below,
may
enter
the
separate
storm
sewer
system.
However,
the
permittee
shall
incorporate
WPDES
Permit
No.
WI­
0046477­
02­
0
General
Mitchell
International
Airport
6
appropriate
control
measures
in
the
storm
water
pollution
prevention
plan
if
any
of
these
discharges
are
identified
as
significant
sources
of
pollutants.

 
Water
line
flushing
 
Landscape
irrigation
 
Diverted
stream
flows
 
Uncontaminated
ground
water
infiltration
 
Uncontaminated
pumped
ground
water
 
Discharges
from
potable
water
sources
 
Foundation
drains
 
Air
conditioning
condensate
 
Irrigation
water
 
Lawn
watering
 
Individual
private
vehicle
or
aircraft
washing
 
Flows
from
riparian
habitats
and
wetlands
 
Pavement
wash
water
 
Fire
fighting
WPDES
Permit
No.
WI­
0046477­
02­
0
General
Mitchell
International
Airport
7
4
Storm
Water
Pollution
Prevention
Plan
General
Mitchell
International
Airport
shall
follow
the
"
Storm
Water
Pollution
Prevention
Plan"
prepared
under
the
previous
permit.
Implementation
of
the
plan
shall
be
a
continuing
activity.
The
plan
shall
be
amended
where
necessary
to
minimize
the
discharge
of
pollutants
to
the
maximum
extent
practicable.
The
glycol
management
controls
of
the
plan
shall
be
revised
as
necessary
to
comply
with
the
glycol
capture
goal.
If
the
glycol
capture
goal
is
not
attained,
as
reported
in
an
annual
report,
the
airport
shall
take
the
necessary
measures
to
meet
the
goal
the
next
deicing
season.
Refer
to
Section
7.2.5.7
that
describes
the
annual
glycol
capture
goal,
and
Section
8.2
for
the
schedule
of
compliance.
WPDES
Permit
No.
WI­
0046477­
02­
0
General
Mitchell
International
Airport
8
5
Influent
Requirements
5.1
Sampling
Point(
s)

Sampling
Point
Designation
Sampling
Point
Number
Sampling
Point
Location,
WasteType/
Sample
Contents
and
Treatment
Description
(
as
applicable)

701
Inflow
from
the
City
of
Cudahy
and
Wisconsin
Air
National
Guard
128th
on
the
east
central
side
of
the
airport.
601
Receiving
water
monitoring
location
approximately
5
miles
downstream
from
Outfall
007.
Sampling
station
is
at
Wilson
Park
Creek
just
before
the
confluence
with
the
Kinnickinnic
River,
and
across
from
St.
Luke's
Hospital.

5.2
Monitoring
Requirements
The
permittee
shall
comply
with
the
following
monitoring
requirements.

5.2.1
Sampling
Point
701
­
Inflow
­
Bailey's
Pond
Monitoring
Requirements
and
Limitations
Parameter
Limit
Type
Limit
and
Units
Sample
Frequency
Sample
Type
Notes
Ethylene
glycol
mg/
L
Annual
Composite
Propylene
glycol
mg/
L
Annual
Composite
BOD5,
Total
mg/
L
Annual
Composite
COD
mg/
L
Annual
Composite
Suspended
Solids,
Total
mg/
L
Annual
Composite
Nitrogen,
Ammonia
(
NH3­
N)
Total
mg/
L
See
Permit
Composite
5.2.3.6
(
c)

Nitrogen,
Total
Kjeldahl
mg/
L
See
Permit
Composite
5.2.3.6
(
c)

Dissolved
Oxygen
mg/
L
Annual
Grab
pH
Field
su
Annual
Composite
Hardness,
Total
as
CaCO3
mg/
L
See
Permit
Composite
5.2.3.6
(
c)

Copper,
Total
Recoverable
µ
g/
L
See
Permit
Composite
5.2.3.6
(
c)

Lead,
Total
Recoverable
µ
g/
L
See
Permit
Composite
5.2.3.6
(
c)

Zinc,
Total
Recoverable
µ
g/
L
See
Permit
Composite
5.2.3.6
(
c)
WPDES
Permit
No.
WI­
0046477­
02­
0
General
Mitchell
International
Airport
9
5.2.2
Sampling
Point
601
­
Receiving
Water
­
St.
Luke's
Monitoring
Requirements
and
Limitations
Parameter
Limit
Type
Limit
and
Units
Sample
Frequency
Sample
Type
Notes
Ethylene
glycol
mg/
L
3/
Year
Composite
Propylene
glycol
mg/
L
3/
Year
Composite
BOD5,
Total
mg/
L
3/
Year
Composite
COD
mg/
L
3/
Year
Composite
Suspended
Solids,
Total
mg/
L
3/
Year
Composite
Nitrogen,
Ammonia
(
NH3­
N)
Total
mg/
L
See
Permit
Composite
5.2.3.6
(
c)

Nitrogen,
Total
Kjeldahl
mg/
L
See
Permit
Composite
5.2.3.6
(
c)

Dissolved
Oxygen
mg/
L
3/
Year
Grab
pH
Field
su
3/
Year
Composite
Hardness,
Total
as
CaCO3
mg/
L
See
Permit
Composite
5.2.3.6
(
c)

Copper,
Total
Recoverable
µ
g/
L
See
Permit
Composite
5.2.3.6
(
c)

Lead,
Total
Recoverable
µ
g/
L
See
Permit
Composite
5.2.3.6
(
c)

Zinc,
Total
Recoverable
µ
g/
L
See
Permit
Composite
5.2.3.6
(
c)

5.2.3
Monitoring
Special
Conditions
5.2.3.1
Purpose
The
airport
shall
monitor
an
inflow
up­
stream
and
the
receiving
water
down­
stream
for
use
to
evaluate
the
effectiveness
of
the
storm
water
pollution
prevention
plan
in
controlling
the
discharge
of
pollutants.
Visual
inspections
shall
look
for
obvious
problems,
and
the
chemical
analysis
shall
provide
specific
water
quality
data,
both
tools
for
evaluation
of
the
best
management
practices.
Storm
water
monitoring
shall
consist
of
the
following:

5.2.3.2
Monitoring
Locations
The
visual
inspections
and
sample
collections
shall
be
taken
at
the
locations
identified
in
Table
5.1.
The
location
numbers
are
as
indicated
on
airport's
sampling
map
included
in
the
storm
water
pollution
prevention
plan.
Sample
Point
701
(
formerly
07AI)
monitors
an
up­
stream
inflow.
Sample
Point
601
(
formerly
07W)
monitors
the
receiving
water
quality
downstream
of
airport's
discharges.

5.2.3.3
Visual
Inspections
Visually
inspect
the
outfalls
listed
in
Table
5.1
to
characterize
the
quality
of
storm
water
discharged
during
the
"
first
flush"
of
storm
water
runoff
from
representative
storms
or
snow
melts.
Within
the
first
30
minutes
of
when
runoff
first
appears
at
the
monitoring
location,
or
as
soon
thereafter
as
practicable,
observations
of
the
discharge
shall
be
made.
Characterization
of
runoff
quality
shall
include
observations
for
color,
odor,
turbidity,
floating
solids,
foam,
oil
sheen,
or
other
obvious
indicators
of
storm
water
pollution.
Documentation
shall
include
the
inspection
date,
inspector,
summary
of
observations,
and
probable
sources
of
observed
storm
water
pollution.
WPDES
Permit
No.
WI­
0046477­
02­
0
General
Mitchell
International
Airport
10
5.2.3.4
Chemical
Analysis
Sample
the
outfalls
listed
in
Table
5.1
for
chemical
analysis
to
quantify
pollutants
of
concern.
The
parameters
listed
in
Tables
5.2.1,
and
5.2.2
above
represents
the
Department's
minimum
required
chemical
analysis
that
shall
be
conducted.

5.2.3.5
Sampling
Procedure
The
following
requirements
apply
to
collecting
samples
when
chemical
analysis
is
conducted:
(
a)
Samples
shall
be
collected
from
storms
which
are
preferably
at
least
50%
of
the
monthly
average
precipitation
event
amount,
but
no
less
than
0.1
inch
rain.
The
runoff
event
sampled
shall
be
at
least
72
hours
from
the
previously
measurable
precipitation
event
greater
than
0.1
inch.

(
b)
The
storm
water
sample
shall
be
representative
of
the
"
first
flush"
of
storm
water
runoff.
When
runoff
first
appears
in
the
outfall
or
as
soon
thereafter
as
practicable,
a
sample
shall
be
collected
during
a
30
minute
period.
A
minimum
of
3
sample
portions,
evenly
spaced
throughout
the
30
minute
sampling
period,
shall
be
collected
for
a
composite
sample.
As
an
alternative,
a
"
flow
weighted
composite"
sample
for
the
entire
storm
water
event
may
be
collected
in
place
of
the
"
first
flush"
composite.
In
addition,
a
grab
sample
shall
be
collected
within
the
first
30
minutes
of
the
runoff
for
those
parameters
being
analyzed
that
require
a
grab
sample.
If
the
storm
water
discharge
is
from
a
storage
facility
with
at
least
24
hours
holding
time,
a
representative
grab
shall
be
collected
from
the
storage
facility
for
analysis
of
all
parameters.

(
c)
When
sampling
snow
melt
and
deicing
or
anti­
icing
events,
best
professional
judgment
shall
be
used
for
when
to
collect
a
representative
sample.

(
d)
A
narrative
description
shall
be
provided
of
each
storm
event
which
is
sampled,
including
the
date
and
duration
of
the
storm,
precipitation
amount
(
if
snowfall
include
inches
of
snow
and
rainfall
equivalent),
the
duration
between
the
storm
event
sampled
and
the
end
of
the
previous
measurable
storm
of
greater
than
0.1
inch
rainfall,
and
an
estimate
of
the
total
volume
of
storm
water
discharged.

(
e)
Approved
analytical
methods
shall
be
used
in
accordance
with
ch.
NR
219,
Wis.
Adm.
Code
"
Analytical
Test
Methods
and
Procedures",
or
guidance
on
storm
water
sampling
procedures
developed
by
the
Department.
When
no
analytical
method
is
approved,
a
suitable
method
may
be
used
provided
a
description
of
the
method
is
submitted
to
the
department
for
concurrence
prior
to
sampling.

5.2.3.6
Monitoring
Frequency
The
permittee
shall
conduct
monitoring
during
each
reporting
period
of
July
1
to
June
30,
which
includes
one
contiguous
deicing
season.
When
a
chemical
sample
is
collected,
a
visual
inspection
shall
be
done
concurrently.
All
monitoring
locations
shall
be
sampled
during
the
same
storm
or
snow
melt
event
if
possible.
(
a)
Visual
inspections
shall
be
made
quarterly
every
year.
At
least
2
of
the
quarterly
monitoring
dates
shall
be
during
a
deicing
or
anti­
icing
event.

(
b)
Samples
collected
for
chemical
analysis
are
required
every
year,
at
the
minimum
frequency
specified
in
Table
5.2.1,
and
5.2.2.
Chemical
monitoring
samples
shall
be
collected
during
a
deicing
or
anti­
icing
event.
Additional
samples
may
be
collected
as
necessary
for
data
collection.

(
c)
Monitoring
of
ammonia
nitrogen,
total
Kjeldahl
nitrogen,
hardness,
copper,
lead,
and
zinc
are
only
required
the
first
and
last
year
of
the
permit.

5.2.3.7
Sampling
Exemption
If
the
permittee
is
unable
to
collect
samples
due
to
adverse
climatic
conditions,
the
permittee
shall
describe
why
samples
could
not
be
collected
in
the
annual
report.
An
exemption
from
the
monitoring
requirements
shall
be
given
for
just
cause,
however,
this
does
not
relieve
the
permittee
of
complying
with
the
monitoring
requirements
when
weather
conditions
allow
sampling.
WPDES
Permit
No.
WI­
0046477­
02­
0
General
Mitchell
International
Airport
11
6
In­
Plant
Requirements
6.1
Sampling
Point(
s)

Sampling
Point
Designation
Sampling
Point
Number
Sampling
Point
Location,
WasteType/
Sample
Contents
and
Treatment
Description
(
as
applicable)

101
Milwaukee
County
hydrant
fueling
system
pump
station
oil
and
water
separator,
which
serves
both
the
aviation
and
ground
service
equipment
fueling
areas.
102
Signature
Flight
Support
aviation
fuel
tank
oil
and
water
separator.
103
Cessna/
Citation
fuel
farm
oil
and
water
separator.

6.2
Monitoring
Requirements
and
Limitations
The
permittee
shall
comply
with
the
following
monitoring
requirements
and
limitations.

6.2.1
Sampling
Point
101
,
102,
and
103
Monitoring
Requirements
and
Limitations
Parameter
Limit
Type
Limit
and
Units
Sample
Frequency
Sample
Type
Notes
Flow
Rate
gpd
Quarterly
Estimated
Oil
&
Grease
(
Hexane)
Daily
Max
15
mg/
L
Quarterly
Grab
Suspended
Solids,
Total
Daily
Max
40
mg/
L
Quarterly
Grab
6.2.2
Applicability
Permittees
may
discharge
into
the
separate
storm
sewer
system
treated
contaminated
storm
water
discharged
from
oil
water
separators,
in
accordance
with
the
conditions
in
this
section.
The
following
are
operators
of
oil
and
water
separators
at
General
Mitchell
International
Airport:
 
Milwaukee
County
Hydrant
Fueling
System
Pump
Station
.
 
Signature
Flight
Support.
 
Cessna/
Citation.
 
Any
other
co­
permittee
with
an
oil
and
water
separator.

6.2.3
Operating
Requirements
Permittees
shall
comply
with
the
following:
(
a)
The
oil
and
water
separator
treatment
controls
for
petroleum
contaminated
storm
water
runoff,
shall
be
adequately
sized,
designed,
operated
and
maintained.
Plans
and
specifications
for
any
new
oil
and
water
separator
shall
be
submitted
to
the
Department
for
approval
prior
to
construction,
in
accordance
with
ch.
NR
108,
Wis.
Adm.
Code.
(
b)
No
matgerials
shall
intentionally
be
dumped
in
the
oil
and
water
separator
for
treatment
or
storage.
(
c)
Accumulated
solids,
oil
and
grease
shall
be
removed
on
a
periodic
basis
to
maintain
the
efficiency
of
the
separator.
The
water
discharge
side
of
the
separator
shall
be
clean
so
there
is
no
oil
sheen
or
scum.
All
removed
substances
shall
be
properly
disposed
of.
(
d)
There
shall
be
no
leakage
form
any
containment
berms,
dikes
or
tanks.
WPDES
Permit
No.
WI­
0046477­
02­
0
General
Mitchell
International
Airport
12
6.2.4
Effluent
Limitations
and
Monitoring
Requirements
The
discharge
shall
be
limited
and
monitored
by
the
permittee
as
follows:
(
a)
The
oil
and
water
separator
shall
be
inspected
at
least
quarterly
for
proper
operation.

(
b)
Document
the
volume
of
waste
oil
recovered,
date
of
removal,
who
removed
it,
and
the
ultimate
fate
of
the
waste
oil.

(
c)
The
discharge
is
subject
to
the
general
storm
water
discharge
limitations
in
Paragraph
7.2.5.1.

(
d)
Samples
shall
be
collected
from
oil
and
water
separator
effluent
prior
to
discharge
to
the
separate
storm
sewer
system,
from
each
of
the
oil
and
water
separators
at
the
airport.

(
e)
Effluent
samples
shall
be
collected
from
the
Sample
Points
identified
in
Table
6.1,
and
be
analyzed
as
specified
in
Table
6.2.1.

(
f)
For
all
petroleum
storage
tanks,
submit
in
the
annual
report
the
following
information:

1.
Method
used
to
handle
and
dispose
of
petroleum
storage
tank
condensate,
the
volume
of
condensate
discharged,
and
the
frequency
of
the
discharge.

2.
If
petroleum
storage
tank
condensate
is
discharged,
the
condensate
shall
be
analyzed
for
benzene,
ethylbenzene,
lead
(
if
lead
additives
are
used),
total
phenols,
toluene,
and
xylene.
Detection
of
any
of
the
above
parameters
in
the
condensate
may
result
in
a
determination
by
the
Department
that
the
discharge
is
not
allowable
if
it
is
a
significant
source
of
pollutants.
WPDES
Permit
No.
WI­
0046477­
02­
0
General
Mitchell
International
Airport
13
7
Surface
Water
Requirements
7.1
Sampling
Point(
s)

The
discharge(
s)
shall
be
limited
to
the
waste
type(
s)
designated
for
the
listed
sampling
point(
s).

Sampling
Point
Designation
Sampling
Point
Number
Sampling
Point
Location,
WasteType/
Sample
Contents
and
Treatment
Description
(
as
applicable)

001
Discharge
of
storm
water
runoff,
from
the
Cargo
Ramp
area
to
Wilson
Park
Creek
tributary
to
Kinnickinnic
River.
The
outfall
is
located
on
the
west
of
the
airport.
003
Discharge
of
storm
water
runoff
from
the
southern
most
runways
and
taxiways
to
a
tribuary
of
Oak
Creek.
The
outfall
is
located
at
the
southeast
corner
of
the
airport
at
College
Avenue.
007
Discharge
of
storm
water
from
the
terminal
ramp
area
plus
the
runways
and
taxiways
on
the
northcentral
parts
of
the
airport
to
Wilson
Park
Creek
tributary
to
the
Kinnickinnic
River.
The
outfall
is
located
at
the
northwest
corner
of
the
airport
at
Howell
and
Layton
Avenues.

7.2
Monitoring
Requirements
and
Effluent
Limitations
The
permittee
shall
comply
with
the
following
monitoring
requirements
and
limitations.

7.2.1
Sampling
Point
(
Outfall)
001
­
Wilson
Park
Creek
Cargo
Ramp
Monitoring
Requirements
and
Effluent
Limitations
Parameter
Limit
Type
Limit
and
Units
Sample
Frequency
Sample
Type
Notes
Flow
Rate
gal/
yr
Annual
Estimated
Ethylene
glycol
mg/
L
Annual
Composite
Propylene
glycol
mg/
L
Annual
Composite
BOD5,
Total
mg/
L
Annual
Composite
COD
mg/
L
Annual
Composite
Suspended
Solids,
Total
mg/
L
Annual
Composite
Nitrogen,
Ammonia
(
NH3­
N)
Total
mg/
L
See
Permit
Composite
7.2.4.6
(
c)

Nitrogen,
Total
Kjeldahl
mg/
L
See
Permit
Composite
7.2.4.6
(
c)

Oil
&
Grease
(
Hexane)
mg/
L
Annual
Grab
Dissolved
Oxygen
mg/
L
Annual
Grab
pH
Field
su
Annual
Composite
WPDES
Permit
No.
WI­
0046477­
02­
0
General
Mitchell
International
Airport
14
7.2.2
Sampling
Point
(
Outfall)
003
­
Oak
Creek
Monitoring
Requirements
and
Effluent
Limitations
Parameter
Limit
Type
Limit
and
Units
Sample
Frequency
Sample
Type
Notes
Flow
Rate
gal/
yr
Annual
Estimated
7.2.3
Sampling
Point
(
Outfall)
007
­
Wilson
Park
CreekTerminal
Ramp
Monitoring
Requirements
and
Effluent
Limitations
Parameter
Limit
Type
Limit
and
Units
Sample
Frequency
Sample
Type
Notes
Flow
Rate
gal/
yr
Annual
Estimated
Ethylene
glycol
mg/
L
3/
Year
Composite
Propylene
glycol
mg/
L
3/
Year
Composite
BOD5,
Total
mg/
L
3/
Year
Composite
COD
mg/
L
3/
Year
Composite
Suspended
Solids,
Total
mg/
L
3/
Year
Composite
Nitrogen,
Ammonia
(
NH3­
N)
Total
mg/
L
See
Permit
Composite
7.2.4.6
(
c)

Nitrogen,
Total
Kjeldahl
mg/
L
See
Permit
Composite
7.2.4.6
(
c)

Oil
&
Grease
(
Hexane)
mg/
L
Annual
Grab
Dissolved
Oxygen
mg/
L
3/
Year
Grab
pH
Field
su
3/
Year
Composite
Hardness,
Total
as
CaCO3
mg/
L
See
Permit
Composite
7.2.4.6
(
c)

Copper,
Total
Recoverable
µ
g/
L
See
Permit
Composite
7.2.4.6
(
c)

Lead,
Total
Recoverable
µ
g/
L
See
Permit
Composite
7.2.4.6
(
c)

Zinc,
Total
Recoverable
µ
g/
L
See
Permit
Composite
7.2.4.6
(
c)

7.2.4
Monitoring
Special
Conditions
7.2.4.1
Purpose
The
airport
shall
monitor
discharges
into
the
separate
storm
sewer
system
to
evaluate
the
effectiveness
of
the
storm
water
pollution
prevention
plan
in
controlling
the
discharge
of
pollutants.
Visual
inspections
shall
look
for
obvious
problems,
and
the
chemical
analysis
shall
provide
specific
water
quality
data,
both
tools
for
evaluation
of
the
best
management
practices.
Storm
water
monitoring
shall
consist
of
the
following:
WPDES
Permit
No.
WI­
0046477­
02­
0
General
Mitchell
International
Airport
15
7.2.4.2
Monitoring
Locations
The
visual
inspections
and
sample
collections
shall
be
taken
at
the
locations
identified
in
Table
7.1.
The
location
numbers
are
as
indicated
on
airport's
sampling
map
included
in
the
storm
water
pollution
prevention
plan.
Outfalls
001,
003,
and
007
monitor
the
water
quality
of
the
airport's
discharges.

7.2.4.3
Visual
Inspections
Visually
inspect
the
outfalls
listed
in
Table
7.1
to
characterize
the
quality
of
storm
water
discharged
during
the
"
first
flush"
of
storm
water
runoff
from
representative
storms
or
snow
melts.
Within
the
first
30
minutes
of
when
runoff
first
appears
at
the
monitoring
location,
or
as
soon
thereafter
as
practicable,
observations
of
the
discharge
shall
be
made.
Characterization
of
runoff
quality
shall
include
observations
for
color,
odor,
turbidity,
floating
solids,
foam,
oil
sheen,
or
other
obvious
indicators
of
storm
water
pollution.
Documentation
shall
include
the
inspection
date,
inspector,
summary
of
observations,
and
probable
sources
of
observed
storm
water
pollution.

7.2.4.4
Chemical
Analysis
Sample
the
outfalls
listed
in
Table
6.1
for
chemical
analysis
to
quantify
pollutants
of
concern.
The
effluent
parameters
listed
in
Tables
7.2.1,
7.2.2,
and
7.2.3
represents
the
Department's
minimum
required
chemical
analysis
that
shall
be
conducted.
Outfall
003
only
needs
estimated
flow,
a
chemical
analysis
is
not
required
unless
a
visual
inspections
indicates
the
potential
presence
of
pollutants
at
levels
of
concern.

7.2.4.5
Sampling
Procedure
The
following
requirements
apply
to
collecting
samples
when
chemical
analysis
is
conducted:
(
a)
Samples
shall
be
collected
from
storms
which
are
preferably
at
least
50%
of
the
monthly
average
precipitation
event
amount,
but
no
less
than
0.1
inch
rain.
The
runoff
event
sampled
shall
be
at
least
72
hours
from
the
previously
measurable
precipitation
event
greater
than
0.1
inch.

(
b)
The
storm
water
sample
shall
be
representative
of
the
"
first
flush"
of
storm
water
runoff.
When
runoff
first
appears
in
the
outfall
or
as
soon
thereafter
as
practicable,
a
sample
shall
be
collected
during
a
30
minute
period.
A
minimum
of
3
sample
portions,
evenly
spaced
throughout
the
30
minute
sampling
period,
shall
be
collected
for
a
composite
sample.
As
an
alternative,
a
"
flow
weighted
composite"
sample
for
the
entire
storm
water
event
may
be
collected
in
place
of
the
"
first
flush"
composite.
In
addition,
a
grab
sample
shall
be
collected
within
the
first
30
minutes
of
the
runoff
for
those
parameters
being
analyzed
that
require
a
grab
sample.
If
the
storm
water
discharge
is
from
a
storage
facility
with
at
least
24
hours
holding
time,
a
representative
grab
shall
be
collected
from
the
storage
facility
for
analysis
of
all
parameters.

(
c)
When
sampling
snow
melt
and
deicing
or
anti­
icing
events,
best
professional
judgment
shall
be
used
for
when
to
collect
a
representative
sample.

(
d)
A
narrative
description
shall
be
provided
of
each
storm
event
which
is
sampled,
including
the
date
and
duration
of
the
storm,
precipitation
amount
(
if
snowfall
include
inches
of
snow
and
rainfall
equivalent),
the
duration
between
the
storm
event
sampled
and
the
end
of
the
previous
measurable
storm
of
greater
than
0.1
inch
rainfall,
and
an
estimate
of
the
total
volume
of
storm
water
discharged.

(
e)
Approved
analytical
methods
shall
be
used
in
accordance
with
ch.
NR
219,
Wis.
Adm.
Code
"
Analytical
Test
Methods
and
Procedures",
or
guidance
on
storm
water
sampling
procedures
developed
by
the
Department.
When
no
analytical
method
is
approved,
a
suitable
method
may
be
used
provided
a
description
of
the
method
is
submitted
to
the
department
for
concurrence
prior
to
sampling.

7.2.4.6
Monitoring
Frequency
The
permittee
shall
conduct
monitoring
during
each
reporting
period
of
July
1
to
June
30,
which
includes
one
contiguous
deicing
season.
When
a
chemical
sample
is
collected,
a
visual
inspection
shall
be
done
concurrently.
All
monitoring
locations
shall
be
sampled
during
the
same
storm
or
snow
melt
event
if
possible.
(
a)
Visual
inspections
shall
be
made
quarterly
every
year.
At
least
2
of
the
quarterly
monitoring
dates
shall
be
during
a
deicing
or
anti­
icing
event.
WPDES
Permit
No.
WI­
0046477­
02­
0
General
Mitchell
International
Airport
16
(
b)
Samples
collected
for
chemical
analysis
are
required
every
year,
at
the
minimum
frequency
specified
in
Table
7.2.1,
7.22,
and
7.2.3.
Chemical
monitoring
samples
shall
be
collected
during
a
deicing
or
anti­
icing
event.
Additional
samples
may
be
collected
as
necessary
for
data
collection.

(
c)
Monitoring
of
ammonia
nitrogen,
total
Kjeldahl
nitrogen,
hardness,
copper,
lead,
and
zinc
are
only
required
the
first
and
last
year
of
the
permit.

7.2.4.7
Flow
Volume
Estimate
the
volume
of
storm
water
and
wastewater
discharged
from
Outfalls
001,
003,
and
007.
The
estimate
and
method
of
calculation
shall
be
provided
in
the
annual
report.

7.2.4.8
Pollutant
Loading
The
permittee
shall
estimate
the
annual
pollutant
loading
from
spent
deicing
and
anti­
icing
chemicals
discharged
from
the
permitted
area
into
the
storm
sewer
system.
Data
shall
be
maintained
on:
(
a)
The
amount
and
type
of
deicer
or
anti­
icer
used
each
reporting
period.

(
b)
The
estimated
amount
of
glycol
captured
for
recycling
or
disposal,
and
the
volume
discharged
into
the
sanitary
sewer.

(
c)
The
estimated
amount
of
glycol
discharged
in
runoff
to
the
separate
storm
sewer
system,
with
a
brief
description
on
the
how
the
estimate
was
calculated.

Note:
The
aircraft
deicing
and
anti­
icing
is
believed
to
be
the
major
source
of
glycol
discharged.
However,
best
professional
judgment
of
other
sources
of
glycol
discharged
shall
be
estimated.
The
estimate
provided
here
shall
represent
a
comprehensive
discharge
amount
that
includes
the
entire
permitted
area.

(
d)
The
weather
conditions
that
required
deicing
or
anti­
icing,
to
determine
the
correlation
between
the
weather
and
amount
of
deicer
and
anti­
icer
used.

(
e)
The
air
traffic,
to
determine
the
correlation
between
air
traffic
and
amount
of
deicer
and
anti­
icer
used.

Note:
The
permittee
may
determine
what
the
relevant
air
traffic
data
is.
This
is
intended
to
be
data
that
is
currently
readily
available,
not
some
new
monitoring
requirement
on
detailed
air
traffic
accounting.

7.2.4.9
Sampling
Exemption
If
the
permittee
is
unable
to
collect
samples
due
to
adverse
climatic
conditions,
the
permittee
shall
describe
why
samples
could
not
be
collected
in
the
annual
report.
An
exemption
from
the
monitoring
requirements
shall
be
given
for
just
cause,
however,
this
does
not
relieve
the
permittee
of
complying
with
the
monitoring
requirements
when
weather
conditions
allow
sampling.

7.2.5
Discharge
Requirements
7.2.5.1
General
Discharge
Limitations
Permittees
may
not
discharge
from
the
separate
storm
sewer
system
the
following
substances
in
amounts
that
may
adversely
effect
receiving
water
quality
or
aquatic
life:
(
a)
Deicing
and
anti­
icing
chemicals,
including
ethylene
glycol,
propylene
glycol,
urea,
and
any
substitute
chemicals.

(
b)
Solids
and
sand
that
may
settle
to
form
putrescent
or
otherwise
objectionable
sludge
or
sediment
deposits.

(
c)
Oil,
grease,
fuel
and
other
floating
material
that
form
noticeable
accumulations
of
debris,
scum,
foam,
or
sheen.

(
d)
Color
or
odor
that
is
unnatural
and
to
such
a
degree
as
to
create
a
nuisance.

(
e)
Toxic
substances
in
toxic
amounts
to
aquatic
life,
wildlife,
or
humans.

(
f)
Nutrients
conductive
to
the
excessive
growth
of
aquatic
plants
and
algae
to
the
extent
that
such
growths
are
detrimental
to
desirable
forms
of
aquatic
life,
create
conditions
that
are
unsightly,
or
are
a
nuisance.

(
g)
Any
other
substances
that
may
impair
beneficial
uses
of
the
receiving
water.
WPDES
Permit
No.
WI­
0046477­
02­
0
General
Mitchell
International
Airport
17
7.2.5.2
Maximum
Extent
Practicable
The
design
and
sizing
of
the
deicing
and
anti­
icing
controls
for
the
glycol
management
area
shall
be
based
on
a
costeffective
analysis
of
the
control
concept
to
reduce
glycol
discharges
to
the
maximum
extent
practicable.
The
control
strategy
may
be
based
on
the
US
EPA's
1994
Combined
Sewer
Overflow
Policy
"
Presumption"
approach.
This
strategy
would
target
a
minimum
of
85%
capture
of
glycol
contaminated
runoff,
excluding
fugitive
glycol,
from
the
glycol
management
area
based
upon
total
glycol
usage
during
each
deicing
season.
At
an
85%
capture
rate,
the
permittee
is
presumed
to
be
in
compliance
unless
this
capture
rate
is
determined
to
be
non­
cost
effective.
The
permittee
shall
estimate
the
capture
rate
of
glycol
in
the
annual
report
based
on
the
volumes
and
concentration
of
glycol
applied
to
aircraft
and
captured
through
deicing
and
anti­
icing
control
efforts.
Note:
For
the
purposes
of
this
permit,
the
glycol
management
area
is
defined
as
the
airport
terminal
area
and
cargo
ramp
area
where
the
majority
of
the
aircraft
deicing
and
anti­
icing
occurs.

7.2.5.3
Fugitive
Glycol
The
percent
of
glycol
captured
and
percent
discharged
will
only
apply
to
the
glycol
draining
onto
the
glycol
management
area.
It
is
assumed
50%
of
the
total
glycol
in
Type
I
aircraft
deicing
fluids
(
ADFs)
and
15%
of
the
glycol
in
Type
IV
aircraft
anti­
icing
fluids
(
AAFs)
used
on
ramps
and
applied
to
aircraft
will
drain
to
the
glycol
management
area.
The
other
50%
of
the
glycol
in
Type
I
ADF
and
85%
of
glycol
in
AAF
is
considered
fugitive
and
can
not
be
cost
effectively
captured.
Fugitive
glycol
includes
glycol
that
shears
off
aircraft
upon
take­
off,
glycol
that
dissipates
as
vapor
into
the
atmosphere,
and
glycol
used
outside
the
glycol
management
area.
Any
reduction
in
the
amount
glycol
discharged
represents
the
reduction
that
may
result
from
a
maximum
of
50%
of
the
total
amount
of
glycol
in
Type
I
ADF
and
15%
of
the
glycol
in
Type
IV
AAF
used.
Note:
If
future
data
indicates
a
different
value
for
the
fugitive
percentage
is
more
accurate,
that
shall
be
used.
The
50%
and
85%
numbers
on
based
upon
current
finding
at
several
airports
and
represent
the
best
estimate
available.

7.2.5.4
Conservation
Efforts
Recent
advances
in
aircraft
deicing
practices
and
technology
have
resulted
in
significant
reductions
in
total
glycol
required
to
effectively
deice
or
anti­
ice
an
aircraft.
The
amount
of
glycol
required
to
coat
an
aircraft
and
provide
adequate
hold­
over
time
remains
approximately
the
same.
The
reductions
in
glycol
use
are
largely
the
result
of
minimizing
ADF
runoff.
As
a
result,
there
is
less
glycol
available
for
capture.
Fugitive
glycol
remains
about
the
same.
These
advances
make
it
necessary
to
account
for
the
effects
of
source
reduction
and
conservation
in
calculating
an
appropriate
capture
target
with
the
objective
of
85%
of
the
collectable
glycol.

The
effects
of
any
conservation
efforts
and
new
technologies
by
co­
permittees
shall
be
referenced
to
a
baseline
of
historical
glycol
usage
rates.
The
benefit
of
any
individual
technology
and/
or
conservation
effort
will
be
described
as
shown
in
equations
(
1)
and
(
2)
below:

Equation
(
1):
C
i
=
ADF
A
i
÷
ADF
B
i
C
i
=
Fraction
of
baseline
used
by
co­
permittee
"
i"
with
new
technologies
and
conservation
practices
in
place.
ADF
A
i
=
Type
I
aircraft
deicing
fluid
"
Actually"
used
by
co­
permittee
"
i".
ADF
B
i
=
Type
I
aircraft
deicing
fluid
used
under
"
Baseline"
conditions
by
co­
permittee
"
i".

The
amount
of
glycol
used
shall
be
expressed
in
gallons
of
100%
product
undiluted
during
a
deicing
season
(
usually
October
through
April).

Equation
(
2):
C
=

C
i
X
i
C
=
Composite
fraction
applicable
to
airport
representing
all
the
co­
permittees.
X
i
=
Proportion
of
all
Type
I
ADF
used
by
co­
permittee
"
i".

Documented
performance
data
shall
be
provided
on
the
new
technologies
and
conservation
practices
to
serve
as
the
basis
for
agreed
upon
values
of
"
C
i",
along
with
an
accurate
characterization
of
relative
total
Type
I
ADF
usage
by
the
co­
permittee
under
baseline
conditions,
to
serve
as
the
basis
for
"
X
i".
WPDES
Permit
No.
WI­
0046477­
02­
0
General
Mitchell
International
Airport
18
7.2.5.5
Collectable
Type
I
Aircraft
Deicing
Fluids
Based
on
data
for
Type
I
usage,
the
amount
of
collectable
Type
I
fluid
assumes
20%
"
A"
remains
on
the
aircraft,
30%
"
L"
is
lost
as
not
collectable,
for
a
total
loss
of
50%
fugitive.
The
original
total
amount
of
glycol
used
"
T"
is
reduced
by
a
fraction
"
C"
when
conservation
efforts
are
implemented.
The
collectable
runoff
"
R"
equals
50%
before
conservation
efforts,
but
with
conservation
efforts
"
RC"
will
equal
less
than
50%.

ADF
Glycol
Usage
=
TC
=
AT
+
LTC
+
RCT
RC
=
(
1
 
A/
C
 
L)
=
0.7
 
(
0.2
÷
C)
=
Fraction
of
total
ADF
as
collectable
runoff
with
conservation
efforts.

Type
I
=
Sum
of
all
the
Type
I
glycol
used
by
the
co­
permittees
during
a
deicing
season.

Collectable
Type
I
=
RC
×

Type
I
=
(
1
 
A/
C
 
L)
×

Type
I
7.2.5.6
Collectable
Type
IV
Aircraft
Anti­
icing
Fluids
Based
on
data
for
Type
IV
usage,
approximately
85%
of
the
applied
Type
IV
AAF
remains
on
the
aircraft.
The
remaining
15%
is
considered
to
be
collectable
runoff.

Type
IV
=
Sum
of
all
the
Type
IV
glycol
used
by
the
co­
permittees
during
a
deicing
season.

Collectable
Type
IV
=
0.15
×

Type
IV
7.2.5.7
Annual
Glycol
Capture
Goal
Glycol
reduction
shall
be
in
accordance
with
the
deicing
and
anti­
icing
management
controls
in
the
approved
Storm
Water
Pollution
Prevention
Plan.
As
a
measurement
of
performance,
a
glycol
capture
goal
shall
be
determined
based
on
capturing
85%
of
the
collectable
glycol
runoff.
The
permittee
shall
compare
the
amount
of
glycol
applied
for
deicing
and
anti­
icing
with
the
estimated
amount
of
glycol
captured.
This
comparison
provides
a
measurement
of
the
effectiveness
on
the
glycol
management
controls
to
prevent
discharges
of
glycol
contaminated
runoff
into
the
separate
storm
sewer
system.
If
the
percent
captured
for
disposal
or
recycling
meets
or
exceeds
the
annual
glycol
capture
goal
percentage,
the
airport
shall
be
considered
in
compliance.

A
glycol
capture
goal
shall
be
recalculated
in
each
annual
report
according
to
equations
(
3)
and
(
4)
below,
using
the
data
from
the
current
deicing
season
for
C,

Type
I,
and

Type
IV:

Equation
(
3):
85%
Collectable
Glycol
=
0.85[(
0.7
 
(
0.2
÷
C)]
×

Type
I
+
0.85
×
(
0.15
×

Type
IV)

C
=

C
i
X
i
=
Composite
fraction
applicable
airport
wide.

Equation
(
4):
Goal
=
[[
0.595
 
(
0.17
÷
C)
]
×

Type
I
+
0.1275
×

Type
IV
]
÷
(

Type
I
+

Type
IV)
×
100.

The
glycol
capture
goal
in
the
initial
permit
issuance,
where
C
is
100%
for
baseline
conditions,
was
85%
of
50%
of
the
glycol
or
42.5%
of
the
total
glycol
used.
It
is
understood
the
glycol
capture
goal
will
now
be
less
than
42.5%,
because
C
is
less
than
100%
due
to
conservation
efforts,
and
with
the
increased
use
of
Type
IV
glycol
there
is
a
smaller
amount
of
collectable
glycol.
Future
calculations
of
the
capture
goal
percentage
may
include
other
factors,
such
as
weather
conditions
and
airport
growth
that
may
affect
the
amount
of
collectable
glycol.
to
more
accurately
determine
what
the
capture
goal
percentage
should
be.
Any
revision
to
calculation
of
the
glycol
capture
goal
requires
Department
approval.
WPDES
Permit
No.
WI­
0046477­
02­
0
General
Mitchell
International
Airport
19
8
Schedules
of
Compliance
8.1
Annual
Inspection
Perform
and
document
a
comprehensive
annual
facility
site
inspection.
The
inspection
shall
verify
that
the
site
drainage
conditions
and
potential
pollution
sources
identified
in
the
storm
water
pollution
prevention
plan
remain
accurate,
that
the
best
management
practices
prescribed
in
the
plan
are
being
implemented,
and
properly
operated
and
maintained.
Information
reported
must
include
the
date
of
inspection,
inspector,
summary
of
observations,
and
if
any
amendments
are
needed
to
the
storm
water
pollution
prevention
Plan.
The
annual
inspection
shall
be
conducted
during
the
deicing
season,
and
the
findings
submitted
with
the
annual
report.

8.2
Annual
Report
8.2.1
Purpose
The
information
provided
in
the
annual
report
shall
be
used
to
determine
progress
on
implementation
of
the
storm
water
pollution
prevention
plan
and
compliance
with
the
conditions
in
the
permit.

8.2.2
Certification
Milwaukee
County
shall
sign
and
certify
the
annual
report
and
include
a
statement
or
resolution
that
the
co­
permittee's
governing
body
or
delegated
representatives
have
reviewed
or
been
appraised
of
the
content
of
the
annual
report.

8.2.3
Contents
The
permittee
shall
prepare
an
annual
report
for
the
12
month
period
of
July
1
through
June
30,
so
a
deicing
season
is
wholly
contained
in
one
reporting
period.
The
annual
report
shall
be
submitted
no
later
than
3
months
after
the
completed
reporting
period
(
by
September
30).
The
report
shall
include
the
following:
(
a)
The
status
of
implementing
the
storm
water
pollution
prevention
plan,
and
compliance
with
permit
schedules.
(
b)
An
updated
site
map
where
necessary
to
identify
of
any
new
outfalls,
structural
controls,
or
other
note
worthy
changes.

(
c)
A
summary
describing
activities
in
the
storm
water
pollution
prevention
plan
that
have
measurable
results,
and
an
assessment
of
the
effectiveness
of
best
management
practices.

(
d)
A
summary
of
any
amendments
made
or
proposed
to
the
storm
water
pollution
prevention
plan.

(
e)
A
summary
of
the
monitoring
data
required
in
Sections
5,
6,
and
7.

(
f)
A
summary
of
the
glycol
management,
including
calculation
of
the
glycol
capture
goal
and
documentation
of
the
airport's
performance
in
recovering
the
glycol
as
required
in
Section
7.2.5.

(
g)
Identification
of
receiving
water
quality
improvements
or
degradation
resulting
from
airport
activities.
(
h)
A
general
fiscal
summary
of
the
estimated
costs
for
storm
water
program
activities,
which
includes
the
following:
1.
The
annual
expenditures
for
the
previous
year
with
a
breakdown
of
expenses
for
the
major
elements
of
the
program.
2.
The
budget
for
the
current
year
with
an
estimated
breakdown
of
the
expenses
for
the
major
elements
of
the
program.

8.3
Failure
to
Comply
with
Glycol
Capture
Goal
If
the
airport
fails
to
comply
with
the
annual
glycol
capture
goal
for
a
deicing
season,
additional
efforts
shall
be
made
to
comply
with
the
next
years
glycol
capture
goal.
An
amendment
to
the
storm
water
pollution
prevention
plan
shall
WPDES
Permit
No.
WI­
0046477­
02­
0
General
Mitchell
International
Airport
20
be
submitted
in
the
annual
report
proposing
additional
efforts
or
changes.
The
next
year's
annual
report
shall
evaluate
the
success
of
the
additional
efforts
or
changes.

8.4
Deicing
and
Anti­
icing
Infrastructure
The
airport
may
continue
to
use
temporary
equipment
and
continue
pilot
activities
to
minimize
the
release
of
glycol
to
the
environment
and
maximize
the
capture
glycol
runoff
that
is
collectable.
Because
of
the
emerging
technologies
in
glycol
management
controls,
the
airport
is
allowed
this
operational
flexibility.
When
conditions
warrant
the
construction
of
permanent
infrastructure
for
glycol
management,
the
airport
shall
proceed
expeditiously
to
do
so.
If
plans
for
permanent
facilities
are
not
completed
during
the
term
of
this
permit,
the
next
permit
reissuance
will
address
that
need.
There
is
no
compliance
schedule
at
this
time
for
permanent
infrastructure.
The
interim
temporary
measures
must
perform
adequately
and
comply
with
the
glycol
capture
goal.

Facilities
for
glycol
controls
must
receive
DNR
plan
approval
if
they
fall
under
the
description
of
a
reviewable
wastewater
treatment
system
project,
in
accordance
with
ch.
NR
108,
Wis.
Adm.
Code.
Submit
plans
for
any
wastewater
storage
structures,
sewer
system
modifications,
or
any
other
runoff
management
facilities
that
would
be
reviewable.
Allow
90
days
for
DNR
approval
of
the
plans,
prior
to
construction.
WPDES
Permit
No.
WI­
0046477­
02­
0
General
Mitchell
International
Airport
21
9
Standard
Requirements
NR
205,
Wisconsin
Administrative
Code
(
Conditions
for
Industrial
Dischargers):
The
conditions
in
ss.
NR
205.07(
1)
and
NR
205.07(
3),
Wis.
Adm.
Code,
are
included
by
reference
in
this
permit.
The
permittee
shall
comply
with
all
of
these
requirements.
Some
of
these
requirements
are
outlined
in
the
Standard
Requirements
section
of
this
permit.
Requirements
not
specifically
outlined
in
the
Standard
Requirement
section
of
this
permit
can
be
found
in
ss.
NR
205.07(
1)
and
NR
205.07(
3).

9.1
Reporting
and
Monitoring
Requirements
9.1.1
Monitoring
Results
Monitoring
results
obtained
during
the
deicing
season
reporting
period
shall
be
summarized
and
submitted
to
the
Department
with
the
annual
report.
If
the
permittee
monitors
any
parameter
more
frequently
or
additional
parameters
that
what
is
required
by
this
permit,
the
results
of
such
monitoring
shall
be
included
in
the
annual
report.

The
permittee
shall
comply
with
all
limits
for
each
parameter
regardless
of
monitoring
frequency.
For
example,
monthly,
weekly,
and/
or
daily
limits
shall
be
met
even
with
monthly
monitoring.
The
permittee
may
monitor
more
frequently
than
required
for
any
parameter.

Monitoring
reports
shall
be
signed
by
a
principal
executive
officer,
a
ranking
elected
official,
or
other
duly
authorized
representative.

9.1.2
Water
Quality
Sampling
and
Testing
Procedures
Sampling
and
laboratory
testing
procedures
shall
be
performed
in
accordance
with
Chapters
NR
218
and
NR
219,
Wis.
Adm.
Code
and
shall
be
performed
by
a
laboratory
certified
or
registered
in
accordance
with
the
requirements
of
ch.
NR
149,
Wis.
Adm.
Code.
Groundwater
sample
collection
and
analysis
shall
be
performed
in
accordance
with
ch.
NR
140,
Wis.
Adm.
Code.
The
analytical
methodologies
used
shall
enable
the
laboratory
to
quantitate
all
substances
for
which
monitoring
is
required
at
levels
below
the
effluent
limitation.
If
the
required
level
cannot
be
met
by
any
of
the
methods
available
in
NR
219,
Wis.
Adm.
Code,
then
the
method
with
the
lowest
limit
of
detection
shall
be
selected.
Additional
test
procedures
may
be
specified
in
this
permit.

9.1.3
Recording
of
Results
For
each
effluent
measurement
or
sample
taken,
the
permittee
shall
record
the
following
information:

 
the
date,
exact
place,
method
and
time
of
sampling
or
measurements;

 
the
individual
who
performed
the
sampling
or
measurements;

 
the
date
the
analysis
was
performed;

 
the
individual
who
performed
the
analysis;

 
the
analytical
techniques
or
methods
used;
and
 
the
results
of
the
analysis.

9.1.4
Reporting
of
Monitoring
Results
The
permittee
shall
use
the
following
conventions
when
reporting
effluent
monitoring
results:

 
Effluent
concentrations
less
than
the
limit
of
detection
shall
be
reported
as
<
(
less
than)
the
value
of
the
limit
of
detection.
For
example,
if
a
substance
is
not
detected
at
a
detection
limit
of
0.1
mg/
L,
report
the
effluent
concentration
as
<
0.1
mg/
L.
WPDES
Permit
No.
WI­
0046477­
02­
0
General
Mitchell
International
Airport
22
 
Effluent
concentrations
equal
to
or
greater
than
the
limit
of
detection,
but
less
than
the
limit
of
quantitation,
shall
be
reported
and
the
limit
of
quantitation
shall
be
specified.

 
For
the
purposes
of
calculating
an
average
or
a
mass
discharge
value,
the
permittee
may
substitute
a
0
(
zero)
for
any
effluent
concentration
that
is
less
than
the
limit
of
detection.
However,
if
the
effluent
limitation
is
less
than
the
limit
of
detection,
the
department
may
substitute
a
value
other
than
zero
for
results
less
than
the
limit
of
detection,
after
considering
the
number
of
monitoring
results
that
are
greater
than
the
limit
of
detection
and
if
warranted
when
applying
appropriate
statistical
techniques.

9.1.5
Records
Retention
The
permittee
shall
retain
records
of
all
monitoring
information,
including
all
calibration
and
maintenance
records
and
all
original
strip
chart
recordings
for
continuous
monitoring
instrumentation,
copies
of
all
reports
required
by
the
permit,
and
records
of
all
data
used
to
complete
the
application
for
the
permit
for
a
period
of
at
least
3
years
from
the
date
of
the
sample,
measurement,
report
or
application,
except
for
sludge
management
forms
and
records,
which
shall
be
kept
for
a
period
of
at
least
5
years.

9.1.6
Other
Information
Where
the
permittee
becomes
aware
that
it
failed
to
submit
any
relevant
facts
in
a
permit
application
or
submitted
incorrect
information
in
a
permit
application
or
in
any
report
to
the
Department,
it
shall
promptly
submit
such
facts
or
correct
information
to
the
Department.

9.2
System
Operating
Requirements
9.2.1
Noncompliance
Notification
 
The
permittee
shall
report
the
following
types
of
noncompliance
by
a
telephone
call
to
the
Department's
regional
office
within
24
hours
after
becoming
aware
of
the
noncompliance;

 
any
noncompliance
which
may
endanger
health
or
the
environment;
 
any
violation
of
an
effluent
limitation
resulting
from
an
unanticipated
bypass;
 
any
violation
of
an
effluent
limitation
resulting
from
an
upset;
and
 
any
violation
of
a
maximum
discharge
limitation
for
any
of
the
pollutants
listed
by
the
Department
in
the
permit.
 
A
written
report
describing
the
noncompliance
shall
also
be
submitted
to
the
Department's
regional
office
within
5
days
after
the
permittee
becomes
aware
of
the
noncompliance.
On
a
case­
by­
case
basis,
the
Department
may
waive
the
requirement
for
submittal
of
a
written
report
within
5
days
and
instruct
the
permittee
to
submit
the
written
report
with
the
next
regularly
scheduled
monitoring
report.
In
either
case,
the
written
report
shall
contain
a
description
of
the
noncompliance
and
its
cause;
the
period
of
noncompliance,
including
exact
dates
and
times;
the
steps
taken
or
planned
to
reduce,
eliminate
and
prevent
reoccurrence
of
the
noncompliance;
and
if
the
noncompliance
has
not
been
corrected,
the
length
of
time
it
is
expected
to
continue.

 
The
permittee
shall
give
advance
notice
to
the
Department
of
any
planned
changes
in
the
permitted
facility
or
activity
which
may
result
in
noncompliance
with
permit
requirements.

9.2.2
Unscheduled
Bypassing
Any
unscheduled
diversion
or
bypass
of
wastewater
at
the
treatment
works
or
collection
system
is
prohibited
except
in
the
following
cases:

 
an
inadvertent
bypass
resulting
from
equipment
damage
or
temporary
power
interruption;
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an
unavoidable
bypass
necessary
to
prevent
loss
of
life
or
severe
property
damage;
or
 
a
bypass
of
excessive
storm
drainage
or
runoff
which
would
damage
any
facilities
necessary
for
compliance
with
the
effluent
limitations
and
prohibitions
of
the
permit.

In
the
event
of
an
unscheduled
bypass,
the
permittee
shall
immediately
notify
the
Department
regional
office
by
telephone
within
24
hours
after
an
occurrence.
In
addition,
the
permittee
shall
notify
the
Department
by
letter
within
5
days
after
each
such
unscheduled
diversion
or
unscheduled
bypass.
The
written
notification
shall
at
a
minimum
include
reasons
for
such
unscheduled
bypass
including
dates,
length
of
bypass
and
steps
taken
or
planned
to
correct
and
eliminate
such
occurrences.

9.2.3
Scheduled
Bypassing
Any
construction
or
normal
maintenance
which
results
in
a
bypass
of
wastewater
from
a
treatment
system
is
prohibited
unless
authorized
by
the
Department
in
writing.
If
the
Department
determines
that
there
is
significant
public
interest
in
the
proposed
action,
the
Department
may
schedule
a
public
hearing
or
notice
a
proposal
to
approve
the
bypass.
Each
request
shall
specify
the
following
minimum
information:

 
proposed
date
of
bypass;

 
estimated
duration
of
the
bypass;

 
estimated
volume
of
the
bypass;

 
alternatives
to
bypassing;
and
 
measures
to
mitigate
environmental
harm
caused
by
the
bypass.

9.2.4
Proper
Operation
and
Maintenance
The
permittee
shall
at
all
times
properly
operate
and
maintain
all
facilities
and
systems
of
treatment
and
control
which
are
installed
or
used
by
the
permittee
to
achieve
compliance
with
the
conditions
of
this
permit.
The
wastewater
treatment
facility
shall
be
under
the
direct
supervision
of
a
state
certified
operator
as
required
in
s.
NR
108.06(
2),
Wis.
Adm.
Code.
Proper
operation
and
maintenance
includes
effective
performance,
adequate
funding,
adequate
operator
staffing
and
training
as
required
in
ch.
NR
114,
Wis.
Adm.
Code,
and
adequate
laboratory
and
process
controls,
including
appropriate
quality
assurance
procedures.
This
provision
requires
the
operation
of
back­
up
or
auxiliary
facilities
or
similar
systems
only
when
necessary
to
achieve
compliance
with
the
conditions
of
the
permit.

9.2.5
Spill
Reporting
The
permittee
shall
notify
the
Department
in
accordance
with
ch.
NR
706
(
formerly
NR
158),
Wis.
Adm.
Code,
in
the
event
that
a
spill
or
accidental
release
of
any
material
or
substance
results
in
the
discharge
of
pollutants
to
the
waters
of
the
state
at
a
rate
or
concentration
greater
than
the
effluent
limitations
established
in
this
permit,
or
the
spill
or
accidental
release
of
the
material
is
unregulated
in
this
permit,
unless
the
spill
or
release
of
pollutants
has
been
reported
to
the
Department
in
accordance
with
s.
NR
205.07
(
1)(
s),
Wis.
Adm.
Code.

9.2.6
Planned
Changes
In
accordance
with
ss.
283.31(
4)(
b)
and
283.59,
Stats.,
the
permittee
shall
report
to
the
Department
any
facility
expansion,
production
increase
or
process
modifications
which
will
result
in
new,
different
or
increased
discharges
of
pollutants.
The
report
shall
either
be
a
new
permit
application,
or
if
the
new
discharge
will
not
violate
the
effluent
limitations
of
this
permit,
a
written
notice
of
the
new,
different
or
increased
discharge.
The
notice
shall
contain
a
description
of
the
new
activities,
an
estimate
of
the
new,
different
or
increased
discharge
of
pollutants
and
a
description
of
the
effect
of
the
new
or
increased
discharge
on
existing
waste
treatment
facilities.
Following
receipt
of
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this
report,
the
Department
may
modify
this
permit
to
specify
and
limit
any
pollutants
not
previously
regulated
in
the
permit.

9.2.7
Duty
to
Halt
or
Reduce
Activity
Upon
failure
or
impairment
of
treatment
facility
operation,
the
permittee
shall,
to
the
extent
necessary
to
maintain
compliance
with
its
permit,
curtail
production
or
wastewater
discharges
or
both
until
the
treatment
facility
operations
are
restored
or
an
alternative
method
of
treatment
is
provided.

9.3
Surface
Water
Requirements
9.3.1
Determining
Compliance
with
a
Water
Quality
Based
Effluent
Limitation
 
When
the
water
quality
based
effluent
limitation
is
less
than
the
limit
of
detection,
levels
less
than
the
limit
of
detection
are
in
compliance
with
the
effluent
limitation.

 
When
the
water
quality
based
effluent
limitation
is
less
than
the
limit
of
detection,
effluent
levels
greater
than
the
limit
of
detection,
but
less
than
the
limit
of
quantitation
are
in
compliance
with
the
effluent
limitation
except
when
analytically
confirmed
and
statistically
confirmed
by
a
sufficient
number
of
analyses
of
multiple
samples
and
use
of
appropriate
statistical
techniques.

 
When
the
water
quality
based
effluent
limitation
is
greater
than
the
limit
of
detection,
but
less
than
the
limit
of
quantitation,
levels
less
than
the
limit
of
detection
or
less
than
the
limit
of
quantitation
are
in
compliance
with
the
effluent
limitation.

 
When
the
water
quality
based
effluent
limitation
is
expressed
in
the
permit
as
a
daily
maximum
or
average
mass
limitation,
compliance
is
determined
as
stated
above
in
this
section
after
converting
the
limit
of
detection
(
LOD)
and
limit
of
quantitation
(
LOQ)
to
mass
values
using
the
actual
daily
effluent
flow
(
or
actual
average
effluent
flow
for
the
averaging
period).
To
convert
LOD
and
LOQ
from
concentration
to
mass
values
use
the
following
formula:

 
LODmass
or
LOQmass
(
in
lbs/
day)
=
LOD
or
LOQ
(
in
mg/
L)
x
Flow
(
in
MGD)
x
8.34
9.3.2
Appropriate
Formulas
for
Effluent
Calculations
The
permittee
shall
use
the
following
formulas
for
calculating
effluent
results
to
determine
compliance
with
average
limits
and
mass
limits:

Weekly/
Monthly
average
concentration
=
the
sum
of
all
daily
results
for
that
week/
month,
divided
by
the
number
of
results
during
that
time
period.

Weekly
Average
Mass
Discharge
(
lbs/
day)

Daily
mass
=
daily
concentration
(
mg/
L)
x
daily
flow
(
MGD)
x
8.34
Average
the
daily
mass
values
for
the
week.

Monthly
Average
Mass
Discharge
(
lbs/
day)

Daily
mass
=
daily
concentration
(
mg/
L)
x
daily
flow
(
MGD)
x
8.34
Average
the
daily
mass
values
for
the
month.

9.3.3
Visible
Foam
or
Floating
Solids
There
shall
be
no
discharge
of
floating
solids
or
visible
foam
in
other
than
trace
amounts.
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9.3.4
Whole
Effluent
Toxicity
(
WET)
Monitoring
Requirements
In
order
to
determine
the
potential
impact
of
the
discharge
on
aquatic
organisms,
static­
renewal
toxicity
tests
shall
be
performed
on
the
effluent
in
accordance
with
the
procedures
specified
in
the
"
State
of
Wisconsin
Aquatic
Life
Toxicity
Testing
Methods
Manual,
Edition
1"
(
PUBL­
WW­
033­
096,
as
required
by
NR
219.04,
Table
A,
parameters
9
&
10,
footnote
8,
Wis.
Adm.
Code).
Receiving
water
samples
shall
not
be
collected
from
any
point
in
contact
with
the
permittee's
mixing
zone
and
every
attempt
shall
be
made
to
avoid
contact
with
any
other
discharge's
mixing
zone.
Whole
effluent
toxicity
tests
are
not
required
under
this
permit.
But
if
tests
are
conducted,
the
permittee
shall
report
test
results
in
the
annual
report.
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10
Summary
of
Reports
Due
FOR
INFORMATIONAL
PURPOSES
ONLY
Description
Annual
Report
Date
September
30th
Page
19
All
submittals
required
by
this
permit
shall
be
submitted
to
the
Bureau
of
Watershed
Management
and
the
Southeast
Regional
Headquarters
except
as
follows.
Any
Facility
Plans
and/
or
Engineering
Plans
and
Specifications
shall
be
submitted
to
the
Bureau
of
Watershed
Management,
P.
O.
Box
7921,
Madison,
WI,
53707­
7921.