WPDES
Permit
No.
WI­
0048747­
02­
0
WPDES
PERMIT
STATE
OF
WISCONSIN
DEPARTMENT
OF
NATURAL
RESOURCES
PERMIT
TO
DISCHARGE
UNDER
THE
WISCONSIN
POLLUTANT
DISCHARGE
ELIMINATION
SYSTEM
Dane
County
Regional
Airport
is
permitted,
under
the
authority
of
Chapter
283,
Wisconsin
Statutes,
to
discharge
from
a
facility
located
at
4000
International
Lane
Madison,
Wisconsin
53704­
3120
to
West
Branch
of
Starkweather
Creek
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
PERMIT
EFFECTIVE
DATE:
December
01,
2001
EXPIRATION
DATE:
September
30,
2006
WPDES
Permit
No.
WI­
0048747­
02­
0
Dane
County
Regional
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
IN­
PLANT
REQUIREMENTS
8
5.1
SAMPLING
POINT(
S)
8
5.2
MONITORING
REQUIREMENTS
AND
LIMITATIONS
8
5.2.1
Sampling
Point
101
­
Oil
and
Water
Separator
8
5.2.2
Applicability
8
5.2.3
Operating
Requirements
8
5.2.4
Effluent
Limitations
and
Monitoring
Requirements
9
6
SURFACE
WATER
REQUIREMENTS
10
6.1
SAMPLING
POINT(
S)
10
6.2
MONITORING
REQUIREMENTS
AND
EFFLUENT
LIMITATIONS
10
6.2.1
Sampling
Point
(
Outfall)
001
­
Glycol
Retention
Pond
10
6.2.2
Sampling
Point
(
Outfall)
601
­
Stream
Monitoring
11
6.2.3
Glycol
Retention
Pond
Discharge
11
6.2.4
Sampling
Point
(
Outfall)
003
,
022
­
Storm
Sewers
13
6.2.5
Sampling
Point
(
Outfall)
602
and
603
­
Upstream
/
Downstream
13
6.2.6
Monitoring
Special
Conditions
­
Storm
Sewers
and
Starkweather
Creek
13
6.2.7
Storm
Water
Discharge
Requirements
16
7
GROUNDWATER
REQUIREMENTS
18
7.1
MONITORING
REQUIREMENTS
AND
LIMITATIONS
18
7.1.1
Groundwater
Monitoring
System
for
Gylcol
Retention
Pond
18
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
0048747­
02­
0
Dane
County
Regional
Airport
9
STANDARD
REQUIREMENTS
20
9.1
REPORTING
AND
MONITORING
REQUIREMENTS
20
9.1.1
Monitoring
Results
20
9.1.2
Sampling
and
Testing
Procedures
20
9.1.3
Recording
of
Results
20
9.1.4
Reporting
of
Monitoring
Results
20
9.1.5
Records
Retention
21
9.1.6
Other
Information
21
9.2
SYSTEM
OPERATING
REQUIREMENTS
21
9.2.1
Noncompliance
Notification
21
9.2.2
Unscheduled
Bypassing
22
9.2.3
Scheduled
Bypassing
22
9.2.4
Proper
Operation
and
Maintenance
22
9.2.5
Spill
Reporting
23
9.2.6
Planned
Changes
23
9.2.7
Duty
to
Halt
or
Reduce
Activity
23
9.3
SURFACE
WATER
REQUIREMENTS
23
9.3.1
Permittee­
Determined
Limit
of
Quantitation
Incorporated
into
this
Permit
23
9.3.2
Appropriate
Formulas
for
Effluent
Calculations
23
9.3.3
Visible
Foam
or
Floating
Solids
23
9.4
GROUNDWATER
STANDARD
REQUIREMENTS
24
9.4.1
NR
140,
Wis.
Adm.
Code
24
9.4.2
Groundwater
Sampling
24
9.4.3
Indicator
Parameter
­
Preventive
Action
Limits
24
9.4.4
Groundwater
Monitoring
Forms
24
9.4.5
Appropriate
Formulas
for
Groundwater
24
9.4.6
Reporting
Depth
to
Groundwater
24
9.4.7
Groundwater
Elevation
24
9.4.8
Groundwater
Grab
Samples
24
9.4.9
Filtering
of
Groundwater
Samples
25
9.4.10
Groundwater
Data
Log
25
9.4.11
Notification
of
Attaining
or
Exceeding
Groundwater
Quality
Standards
25
10
SUMMARY
OF
REPORTS
DUE
26
WPDES
Permit
No.
WI­
0048747­
02­
0
Dane
County
Regional
Airport
1
1
Airport
Co­
Permittees
1.1
Tenant
Coverage
Airport
tenants
with
industrial
activities
associated
with
commercial
air
transportation
at
Dane
County
Regional
Airport,
may
be
co­
permittees
with
Dane
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:
Airborne
Express
Federal
Express
COMMERCIAL
AIRLINES:
Air
Wisconsin
American
Eagle
Airlines
Chicago
Express
COMAIR
Continental
Express
Midwest
Express
Airlines
Northwest
Airlines
Trans
States
Airlines
OTHER:
State
of
Wisconsin
Dept.
of
Administration
­
Wisconsin
Air
Services
Wisconsin
Air
National
Guard
115th
Fighter
Wing
Wisconsin
Army
National
Guard
Wisconsin
Aviation
Note:
Dane
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
Dane
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
copermittee
list,
by
submitting
information
about
the
change
to
the
Department.
If
the
tenant
desires
to
become
a
copermittee
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
Dane
County
Regional
Airport
WPDES
permit.
Tenants
required
to
be
permitted
under
(
a)
or
(
b)
below
shall
submit
to
the
Department,
through
Dane
County,
a
written
agreement
that
specifies
the
date
the
new
copermittee
assumes
responsibility
for
compliance
with
the
permit
and
liability
for
violations
of
the
permit.
WPDES
Permit
No.
WI­
0048747­
02­
0
Dane
County
Regional
Airport
2
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
0048747­
02­
0
Dane
County
Regional
Airport
3
2
Applicability
2.1
Permitted
Area
This
permit
covers
areas
at
Dane
County
Regional
Airport
within
the
jurisdiction
of
Dane
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
copermittees
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
6.2.5.1,
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
Dane
County,
as
the
owner
and
airport
authority,
shall
act
as
the
airport
representative
and
shall
coordinate
copermittee
efforts
to
achieve
permit
compliance.
Dane
County
and
each
airport
tenant
identified
as
a
co­
permittee
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.
WPDES
Permit
No.
WI­
0048747­
02­
0
Dane
County
Regional
Airport
4
(
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.

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
Dane
County
Regional
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,
Dane
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
0048747­
02­
0
Dane
County
Regional
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
below:

Outfall
Receiving
Water
Location
001
Starkweather
Creek
Glycol
Retention
Pond
Overflow
Structure
003
­
034
Starkweather
Creek
Perimeter
of
the
Airport
Property
There
are
several
drainage
areas
at
the
airport,
with
31
storm
sewer
outfalls
into
Starkweather
Creek
(
Outfalls
013
and
014
were
eliminated).
Outfall
001
functions
as
a
discharge
point
for
the
glycol
pond,
and
is
a
clear
water
by­
pass
during
the
non­
deicing
season.
Outfall
002
is
the
discharge
point
for
the
glycol
pond
into
the
City
of
Madison
sanitary
sewer
when
the
pond
water
quality
is
does
not
meet
permit
effluent
limitations.
Dane
County
Regional
Airport
shall
not
be
held
responsible
for
discharges
tributary
to
the
airport
drainage
system
or
Starkweather
Creek
not
under
its
authority.

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.
Dane
County
conducted
this
evaluation
in
during
the
first
annual
inspection
in
1996
and
submitted
results
with
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
Dane
County
Regional
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.
WPDES
Permit
No.
WI­
0048747­
02­
0
Dane
County
Regional
Airport
6
(
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
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
0048747­
02­
0
Dane
County
Regional
Airport
7
4
Storm
Water
Pollution
Prevention
Plan
Dane
County
Regional
Airport
shall
follow
the
"
Storm
Water
Pollution
Prevention
Plan"
prepared
under
the
previous
permit,
dated
December
1996.
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.
WPDES
Permit
No.
WI­
0048747­
02­
0
Dane
County
Regional
Airport
8
5
In­
Plant
Requirements
5.1
Sampling
Point(
s)

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

101
Wisconsin
Air
National
Guard
115th
Fighter
Wing
fuel
farm
oil
and
water
separator.
Effluent
discharges
to
storm
sewer
Outfall
034.

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

5.2.1
Sampling
Point
101
­
Oil
and
Water
Separator
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
5.2.2
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
Dane
County
Regional
Airport:
 
Dane
County
owned
facilities
operate
5,
all
discharge
to
the
Madison
Metropolitan
Sewerage
District.

 
Wisconsin
Air
National
Guard
Base
operates
8,
7
discharge
to
the
Madison
Metropolitan
Sewerage
District
and
one
discharges
into
the
storm
sewer
system
that
is
regulated
at
Sample
Point
101
in
this
permit.

 
Any
other
co­
permittee
with
an
oil
and
water
separator.

5.2.3
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
materials
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
0048747­
02­
0
Dane
County
Regional
Airport
9
5.2.4
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
(
except
those
connected
to
the
sanitary
sewer).

(
e)
Effluent
samples
shall
be
collected
from
the
Sample
Points
identified
in
Table
6.1,
and
be
analyzed
as
specified
in
Table
5.2.1.

(
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
0048747­
02­
0
Dane
County
Regional
Airport
10
6
Surface
Water
Requirements
6.1
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
treated
storm
water
runoff
from
the
glycol
retention
pond
into
Starkweather
Creek.
601
Stream
Monitoring
is
required
prior
to
discharging
from
the
glycol
retention
pond
to
satisfy
discharge
conditions.
Starkweather
Creek
is
monitored
1400
feet
downstream
from
Outfall
001where
Starkweather
Creek
flows
through
4
culvert
pipes.
003
30­
inch
storm
sewer
outfall
by
control
tower
that
discharges
into
Starkweather
Creek.
022
60­
inch
storm
sewer
outfall
south
of
glycol
pond
that
discharges
into
Starkweather
Creek.
602
Starkweather
Creek
upstream
from
the
Airport
at
Highway
51
crossing.
603
Starkweather
Creek
downstream
from
the
Airport
at
the
Anderson
Street
crossing.

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

6.2.1
Sampling
Point
(
Outfall)
001
­
Glycol
Retention
Pond
Monitoring
Requirements
and
Effluent
Limitations
Parameter
Limit
Type
Limit
and
Units
Sample
Frequency
Sample
Type
Notes
Flow
Rate
gpd
Daily
Total
Daily
BOD5,
Total
Weekly
Avg
13.9
lbs/
day
Weekly
Grab
Mar
1
to
May
31
BOD5,
Total
Weekly
Avg
8.4
lbs/
day
Weekly
Grab
June
1
to
Aug
31
BOD5,
Total
Weekly
Avg
11.7
lbs/
day
Weekly
Grab
Sept
1
to
Nov
30
BOD5,
Total
Weekly
Avg
16.4
lbs/
day
Weekly
Grab
Dec
1
to
Feb
28
BOD5,
Total
Daily
Max
50
mg/
L
Weekly
Grab
COD
mg/
L
Weekly
Grab
Suspended
Solids,
Total
Daily
Max
50
mg/
L
Weekly
Grab
pH
Field
Daily
Max
9.0
su
Weekly
Grab
pH
Field
Daily
Min
6.0
su
Weekly
Grab
Nitrogen,
Ammonia
(
NH3­
N)
Total
Weekly
Avg
3.8
lbs/
day
Weekly
Grab
Mar
1
to
May
31
Nitrogen,
Ammonia
(
NH3­
N)
Total
Weekly
Avg
1.2
lbs/
day
Weekly
Grab
June
1
to
Aug
31
WPDES
Permit
No.
WI­
0048747­
02­
0
Dane
County
Regional
Airport
11
Monitoring
Requirements
and
Effluent
Limitations
Parameter
Limit
Type
Limit
and
Units
Sample
Frequency
Sample
Type
Notes
Nitrogen,
Ammonia
(
NH3­
N)
Total
Weekly
Avg
2.6
lbs/
day
Weekly
Grab
Sept
1
to
Nov
30
Nitrogen,
Ammonia
(
NH3­
N)
Total
Weekly
Avg
5.6
lbs/
day
Weekly
Grab
Dec
1
to
Feb
28
Phosphorus,
Total
mg/
L
Weekly
Grab
6.2.2
Sampling
Point
(
Outfall)
601
­
Stream
Monitoring
Monitoring
Requirements
and
Effluent
Limitations
Parameter
Limit
Type
Limit
and
Units
Sample
Frequency
Sample
Type
Notes
Flow
River
Daily
Min
1.0
cfs
Daily
Gauge
Station
Dissolved
Oxygen
Daily
Min
7.0
mg/
L
Daily
Grab
Temperature
deg
C
Daily
Grab
6.2.3
Glycol
Retention
Pond
Discharge
6.2.3.1
Operating
Requirements
The
permittee
may
discharge
from
Outfall
001
into
Starkweather
Creek
treated
storm
water
runoff
from
the
glycol
retention
pond,
in
accordance
with
the
following
conditions:

(
a)
The
glycol
management
plan
of
operation
shall
be
followed.

(
b)
A
stream
flow
rating
curve
shall
be
used
to
provide
a
means
of
accurately
measuring
background
stream
flow
in
Starkweather
Creek.
The
gauging
station
data
must
be
representative
of
the
airport's
discharge
location
at
Outfall
001.
Flow
data
is
necessary
for
determining
compliance
with
the
mass
limitations.

(
c)
The
glycol
retention
pond
shall
be
regulated
as
a
fill
and
draw
wastewater
pond.
When
deicing
or
anti­
icing
operations
begin,
the
glycol
retention
pond
shall
be
placed
in
operation.
Runoff
containing
glycol
shall
be
captured,
retained
in
the
pond
for
storage,
treated
by
aeration
to
reduce
BOD5,
and
be
emptied
in
the
spring.
The
deicing
operation
mode
typically
occurs
from
October
through
May.

(
d)
If
the
water
quality
of
the
glycol
retention
pond
does
not
meet
the
effluent
limitations
of
Table
6.2.1,
the
wastewater
may
not
be
discharged
into
Starkweather
Creek.
This
wastewater
shall
be
pumped
into
the
sanitary
sewer
system
at
Outfall
002.

(
e)
Overflows
or
bypassing
of
the
glycol
retention
pond
during
the
deicing
season
are
not
permitted,
unless
due
to
unusual
circumstances
or
storm
events
which
exceed
the
design
capacity
of
the
pond.
If
the
capacity
of
the
glycol
retention
pond
approaches
capacity
during
the
deicing
season,
a
sufficient
volume
shall
be
pumped
into
the
sanitary
sewer
to
provide
capacity
to
prevent
the
occurrence
of
an
overflow
or
bypass.
WPDES
Permit
No.
WI­
0048747­
02­
0
Dane
County
Regional
Airport
12
(
f)
After
the
deicing
season,
when
glycol
is
no
longer
present
in
the
runoff,
the
glycol
retention
pond
may
operate
on
a
pass
through
basis.
This
normal
operation
mode
typically
occurs
from
June
through
September.

(
g)
Before
placing
the
pond
in
the
pass
through
mode,
any
accumulated
solids
in
the
glycol
retention
pond
that
may
contribute
pollutants
to
storm
water
runoff,
shall
be
removed
and
properly
disposed.

6.2.3.2
Stream
Monitoring
The
permittee
shall
monitor
Starkweather
Creek
prior
to
discharging
from
Outfall
001,
to
assure
compliance
with
the
limitations
in
the
Table
6.2.2.
The
discharge
shall
be
stopped
if
a
minimum
flow
of
1
cubic
foot
per
second
(
cfs)
and
dissolved
oxygen
of
7
mg/
L
are
not
maintained
in
Starkweather
Creek.
Stream
monitoring
is
only
required
during
periods
of
discharge.

6.2.3.3
Effluent
Limits
The
discharge
from
the
glycol
retention
pond
shall
be
limited
and
monitored
by
the
permittee
as
follows:

(
a)
The
discharge
is
subject
to
the
general
storm
water
discharge
limitations
in
Paragraph
6.2.7.1.

(
b)
Effluent
samples
representative
of
the
contents
of
the
glycol
retention
pond
shall
be
collected
and
analyzed
as
specified
in
Table
6.2.1.
Prior
to
discharging
from
Outfall
001,
a
sample
shall
be
analyzed
to
determine
if
the
limitations
can
be
met.
Effluent
monitoring
is
only
required
during
periods
of
discharge.
A
minimum
of
one
sample
per
week
shall
be
collected
during
the
draw
down
period
of
the
glycol
retention
pond.

(
c)
Record
the
daily
flow
volume
from
the
glycol
retention
pond
during
the
deicing
operation
mode,
for
both
Outfalls
001
and
002.

(
d)
COD
(
chemical
oxygen
demand)
TOC
(
total
organic
carbon)
analysis
may
be
used
instead
of
BOD5
monitoring,
provided
there
is
a
direct
correlation
between
BOD5
and
COD
or
TOC.
The
BOD5
estimates
from
these
tests
may
be
used
for
determining
compliance
with
the
allowable
BOD5
limitations
for
discharging.
An
actual
BOD5
analysis
shall
be
conducted
on
20%
to
25%
of
the
samples
to
confirm
the
correlation.

(
e)
The
BOD5
and
ammonia
effluent
limitations
are
per
cubic
foot
per
second
(
cfs)
of
Starkweather
Creek
stream
flow.
At
higher
stream
flows,
the
effluent
mass
limitations
will
increase
proportionally.
Refer
to
table
below.

(
f)
The
BOD5
mass
limitations
are
based
on
1/
3
the
26
pound
BOD5
per
day
per
cfs
of
stream
flow
adjusted
for
temperature
(
unless
full
assimilative
capacity
is
approved).
The
allowable
BOD5
concentration
varies,
because
it
is
dependent
on
the
BOD5
mass
limitation
at
that
time
of
year
(
temperature
factor),
effluent
flow,
and
stream
flow.
The
following
table
lists
the
allowable
BOD5
concentrations
for
a
discharge
to
comply
with
the
mass
limit.
At
no
time
may
the
BOD5
discharged
be
>
50
mg/
L.
The
allowable
BOD5
concentration
is
calculated
by
the
following
equation:
mg/
L
BOD5
=
(
lbs/
day
BOD5
Limit)
×
(
cfs
Stream
Flow)
(
MGD
Effluent
Flow)
×
(
8.34)

Time
of
Year
Effluent
flow
BOD5
@
1
cfs
Stream
Flow
Weekly
Average
Mass
Limit
per
cfs
March
to
May
June
to
August
Sept.
to
Nov.
Dec.
to
Feb.
100
gpm
or
0.144
MGD
12
mg/
L
7
mg/
L
10
mg/
L
14
mg/
L
13.9
lbs/
day
8.4
lbs/
day
11.7
lbs/
day
16.4
lbs/
day
WPDES
Permit
No.
WI­
0048747­
02­
0
Dane
County
Regional
Airport
13
6.2.3.4
Antidegradation
The
effluent
limitations
in
Table
6.2.1
represent
1/
3
the
assimilative
capacity
of
Starkweather
Creek,
to
prevent
the
significant
lowering
of
water
quality
from
this
new
discharge.
The
permittee
may
demonstrate
the
glycol
retention
pond
is
eligible
for
full
assimilative
capacity
in
accordance
with
ch.
NR
207,
Wis.
Adm.
Code.
If
the
permittee
is
successful
and
the
Department
approves
full
assimilative
capacity,
the
limitations
in
Table
6.2.1
will
be
3
times
the
amount
shown
6.2.4
Sampling
Point
(
Outfall)
003
,
022
­
Storm
Sewers
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
Oil
&
Grease
(
Hexane)
mg/
L
Annual
Grab
Dissolved
Oxygen
mg/
L
Annual
Grab
pH
Field
su
Annual
Composite
6.2.5
Sampling
Point
(
Outfall)
602
and
603
­
Upstream
/
Downstream
Monitoring
Requirements
and
Effluent
Limitations
Parameter
Limit
Type
Limit
and
Units
Sample
Frequency
Sample
Type
Notes
BOD5,
Total
mg/
L
Annual
Grab
COD
mg/
L
Annual
Grab
Suspended
Solids,
Total
mg/
L
Annual
Grab
Dissolved
Oxygen
mg/
L
Annual
Grab
pH
Field
su
Annual
Grab
6.2.6
Monitoring
Special
Conditions
­
Storm
Sewers
and
Starkweather
Creek
6.2.6.1
Purpose
The
airport
shall
monitor
two
representative
storm
sewer
outfalls
from
the
airport,
and
receiving
water
upstream
and
downstream
for
use
to
evaluate
the
effectiveness
of
the
storm
water
pollution
WPDES
Permit
No.
WI­
0048747­
02­
0
Dane
County
Regional
Airport
14
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.

6.2.6.2
Monitoring
Locations
The
visual
inspections
and
sample
collections
shall
be
taken
at
storm
sewer
outfalls
Sampling
Points
003
and
022,
and
Starkweather
Creek
Sampling
Points
602,
and
603.
The
Sampling
Point
location
numbers
are
as
indicated
on
the
airport's
site
map.
The
two
receiving
water
sampling
locations
are
new.
Sampling
Point
602
is
an
upstream
location
on
the
east
side
of
the
Highway
51
crossing.
Sampling
Point
603
is
a
downstream
location
on
the
south
side
of
Anderson
Street
crossing.

6.2.6.3
Visual
Inspections
Visually
inspect
the
Sampling
Points
003,
022,
602,
and
603
to
characterize
the
quality
of
storm
sewer
outfalls
and
receiving
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.

6.2.6.4
Chemical
Analysis
Monitor
Sampling
Points
003,
022,
602,
and
603
for
chemical
analysis
to
quantify
pollutants
of
concern.
The
parameters
listed
in
Tables
6.2.4,
and
6.2.5
above
represents
the
Department's
minimum
required
chemical
analysis
that
shall
be
conducted.

6.2.6.5
Sampling
Procedure
The
following
requirements
apply
to
Sampling
Points
003,
022,
602,
and
603
when
collecting
samples
for
chemical
analysis:
(
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
WPDES
Permit
No.
WI­
0048747­
02­
0
Dane
County
Regional
Airport
15
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.

6.2.6.6
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.
Chemical
monitoring
samples
shall
be
collected
during
a
deicing
or
anti­
icing
event.
Additional
samples
may
be
collected
as
necessary
for
data
collection.
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
for
Sampling
Points
003
and
022
shall
be
collected
once
each
deicing
season
and
monitored
according
to
Table
6.2.4.

(
c)
Samples
collected
for
chemical
analysis
for
Sampling
Points
602
and
603
shall
be
collected
once
each
deicing
season
and
monitored
according
to
Table
6.2.5.
In
addition,
weekly
samples
shall
be
collected
when
the
glycol
retention
pond
is
discharging
from
Outfall
001
(
sampling
procedures
in
paragraph
6.2.6.5
do
not
apply).

6.2.6.7
Flow
Volume
Estimate
the
volume
of
storm
water
and
wastewater
effluent
discharged
from
the
glycol
retention
pond
Outfalls
001
and
002;
and
storm
water
runoff
discharged
from
storm
sewer
Outfalls
003
through
034.
The
estimate
and
method
of
calculation
shall
be
provided
in
the
annual
report.

6.2.6.8
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
antiicer
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.
WPDES
Permit
No.
WI­
0048747­
02­
0
Dane
County
Regional
Airport
16
6.2.6.9
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.

6.2.7
Storm
Water
Discharge
Requirements
6.2.7.1
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.

6.2.7.2
Glycol
Reduction
The
design
and
sizing
of
the
deicing
and
anti­
icing
controls
for
the
glycol
management
area
shall
be
based
on
cost­
effective
management
controls
to
reduce
glycol
discharges
to
the
maximum
extent
practicable.
The
permittee
shall
compare
the
amount
of
glycol
applied
for
deicing
and
anti­
icing
with
the
estimated
amount
of
glycol
runoff
discharging
into
the
separate
storm
sewer
system,
and
the
amount
captured
by
the
glycol
retention
pond,
using
the
data
collected
for
pollutant
loading
describe
in
Paragraph
6.2.6.8.

Note:
For
the
purposes
of
this
permit,
the
glycol
management
area
is
defined
as
the
airport
terminal
area
where
the
majority
of
the
aircraft
deicing
and
anti­
icing
occurs.

6.2.7.3
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.
WPDES
Permit
No.
WI­
0048747­
02­
0
Dane
County
Regional
Airport
17
6.2.7.4
Compliance
The
permittee
shall
be
considered
in
compliance
with
the
discharge
requirements
of
Section
6.2.7
as
long
as
the
permittee
is
proceeding
with
the
activities
required
by
this
permit.
WPDES
Permit
No.
WI­
0048747­
02­
0
Dane
County
Regional
Airport
18
7
Groundwater
Requirements
7.1
Monitoring
Requirements
and
Limitations
7.1.1
Groundwater
Monitoring
System
for
Gylcol
Retention
Pond
Location
of
Monitoring
system:
Glycol
Retention
Pond
Wells
to
be
Monitored:
801,
802,
803,
804
(
corresponds
to
airport
well
names
MW­
1,
MW­
2,
MW­
3,
and
MW­
4
respectively)

Well
Used
To
Calculate
PALs:
801
Enforcement
Standard
Wells:
None
Monitoring
Frequency:
Grab
samples
shall
be
collected
per
the
frequency
shown
in
the
table
at
each
well
to
be
monitored.
Grab
samples
shall
be
collected
monthly
from
any
new
wells
during
the
first
three
months
following
installation.
(
See
the
compliance
schedule
section
herein
for
requirements
on
any
new
wells
to
be
installed.)
Thereafter
monitoring
shall
be
per
the
frequency
shown
in
the
table.
Samples
shall
be
collected
during
April
and
October.

PARAMETER
UNITS
PREVENTIVE
ACTION
LIMIT
ENFORCEMENT
STANDARD
FREQUENCY
Depth
To
Groundwater
feet
*****
N/
A
1/
6
Months
Groundwater
Elevation
feet
MSL
*****
N/
A
1/
6
Months
BOD5
Dissolved
mg/
L
35
N/
A
1/
6
Months
COD,
Filtered
mg/
L
63
N/
A
1/
6
Months
Solids,
Total
Dissolved
mg/
L
1,840
N/
A
1/
6
Months
pH
Field
su
*****
N/
A
1/
6
Months
Conductivity
µ
mhos/
cm
1,990
N/
A
1/
6
Months
*****
Preventive
action
limits
(
PALs)
are
not
calculated
for
Depth
to
Groundwater
or
Groundwater
Elevation.
The
pH
PAL
for
a
site
is
established
in
s.
NR
140.20(
2)(
a),
Wis.
Adm.
Code
as
one
pH
unit
above
or
below
the
pH
of
site
background
groundwater
quality.
The
pH
PAL
for
this
site
has
been
established
at
6.0
s.
u.
to
8.0.
s.
u.
WPDES
Permit
No.
WI­
0048747­
02­
0
Dane
County
Regional
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
Dane
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,
and
6.

(
f)
A
summary
of
the
glycol
management,
including
the
glycol
retention
pond's
performance
in
recovering
the
glycol
as
required
in
Section
6.2.3.

(
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.
WPDES
Permit
No.
WI­
0048747­
02­
0
Dane
County
Regional
Airport
20
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
previous
month
shall
be
summarized
and
reported
on
a
Department
Wastewater
Discharge
Monitoring
Report
Form.
This
report
form
is
to
be
returned
to
the
Department
no
later
than
the
date
indicated
on
the
form.
The
original
and
one
copy
of
the
Wastewater
Discharge
Monitoring
Report
Form
shall
be
submitted
to
your
DNR
regional
office.
A
copy
of
the
Wastewater
Discharge
Monitoring
Report
Form
shall
be
retained
by
the
permittee.

If
the
permittee
monitors
any
pollutant
more
frequently
than
required
by
this
permit,
the
results
of
such
monitoring
shall
be
included
on
the
Wastewater
Discharge
Monitoring
Report
Form.

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
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
The
permittee
shall
maintain
records
which
provide
the
following
information
for
each
effluent
measurement
or
sample
taken:

 
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:
WPDES
Permit
No.
WI­
0048747­
02­
0
Dane
County
Regional
Airport
21
 
Pollutant
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
pollutant
concentration
as
<
0.1
mg/
L.

 
Pollutant
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
pollutant
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.
WPDES
Permit
No.
WI­
0048747­
02­
0
Dane
County
Regional
Airport
22
9.2.2
Unscheduled
Bypassing
Any
unscheduled
bypass
or
overflow
of
wastewater
at
the
treatment
works
or
from
the
collection
system
is
prohibited,
and
the
Department
may
take
enforcement
action
against
a
permittee
for
such
occurrences
under
s.
283.89,
Wis.
Stats.,
unless:

 
The
bypass
was
unavoidable
to
prevent
loss
of
life,
personal
injury,
or
severe
property
damage;

 
There
were
no
feasible
alternatives
to
the
bypass,
such
as
the
use
of
auxiliary
treatment
facilities,
retention
of
untreated
wastes,
or
maintenance
during
normal
periods
of
equipment
downtime.
This
condition
is
not
satisfied
if
adequate
back­
up
equipment
should
have
been
installed
in
the
exercise
of
reasonable
engineering
judgment
to
prevent
a
bypass
which
occurred
during
normal
periods
of
equipment
downtime
or
preventive
maintenance;
and
 
The
permittee
notified
the
Department
as
required
in
this
Section.

Whenever
there
is
an
unscheduled
bypass
or
overflow
occurrence
at
the
treatment
works
or
from
the
collection
system,
the
permittee
shall
notify
the
Department
within
24
hours
of
initiation
of
the
bypass
or
overflow
occurrence
by
telephoning
the
wastewater
staff
in
the
regional
office
as
soon
as
reasonably
possible
(
FAX,
email
or
voice
mail,
if
staff
are
unavailable).

In
addition,
the
permittee
shall
within
5
days
of
conclusion
of
the
bypass
or
overflow
occurrence
report
the
following
information
to
the
Department
in
writing:

 
Reason
the
bypass
or
overflow
occurred,
or
explanation
of
other
contributing
circumstances
that
resulted
in
the
overflow
event.
If
the
overflow
or
bypass
is
associated
with
wet
weather,
provide
data
on
the
amount
and
duration
of
the
rainfall
or
snow
melt
for
each
separate
event.

 
Date
the
bypass
or
overflow
occurred.

 
Location
where
the
bypass
or
overflow
occurred.

 
Duration
of
the
bypass
or
overflow
and
estimated
wastewater
volume
discharged.

 
Steps
taken
or
the
proposed
corrective
action
planned
to
prevent
similar
future
occurrences.

 
Any
other
information
the
permittee
believes
is
relevant.

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.
WPDES
Permit
No.
WI­
0048747­
02­
0
Dane
County
Regional
Airport
23
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
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
Permittee­
Determined
Limit
of
Quantitation
Incorporated
into
this
Permit
For
pollutants
with
water
quality­
based
effluent
limits
below
the
Limit
of
Quantification
(
LOQ)
in
this
permit,
the
LOQ
calculated
by
the
permittee
and
reported
on
the
Discharge
Monitoring
Reports
(
DMRs)
is
incorporated
by
reference
into
this
permit.
The
LOQ
shall
be
reported
on
the
DMRs,
shall
be
the
lowest
quantifiable
level
practicable,
and
shall
be
no
greater
than
the
minimum
level
(
ML)
specified
in
or
approved
under
40
CFR
Part
136
for
the
pollutant
at
the
time
this
permit
was
issued,
unless
this
permit
specifies
a
higher
LOQ.

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.
WPDES
Permit
No.
WI­
0048747­
02­
0
Dane
County
Regional
Airport
24
9.4
Groundwater
Standard
Requirements
9.4.1
NR
140,
Wis.
Adm.
Code
Ch.
NR
140,
Wis.
Adm.
Code
establishes
groundwater
quality
standards
for
substances
detected
in
or
having
a
reasonable
probability
of
entering
the
groundwater
resources
of
the
state.
The
groundwater
monitoring
requirements
contained
in
this
permit
are
based
on
substances
reported
to
be
in
the
discharge
to
groundwater
but
may
not
necessarily
include
all
substances
of
public
health
or
welfare
concern
which
are
in
the
effluent.
Nonetheless,
nothing
in
this
permit
allows
the
permittee
to
discharge
any
substance
in
a
concentration
which
would
cause
groundwater
standards
in
ch.
NR
140,
Adm.
Code
to
be
exceeded.
Should
a
groundwater
enforcement
standard,
preventive
action
limit
or
alternative
concentration
limit
be
exceeded
at
the
point
of
standards
application,
the
Department
will
seek
a
response
in
accordance
with
ch.
NR
140,
Wis.
Adm.
Code.

9.4.2
Groundwater
Sampling
Groundwater
sampling
shall
be
performed
in
accordance
with
procedures
contained
in
the
WDNR
publications,
Groundwater
Sampling
Procedures
Field
Manual
(
PUBL­
WR­
168
87),
Groundwater
Sampling
Procedures
Guidelines
(
PUBL­
WR­
153
87),
Groundwater
Sampling
Desk
Reference
(
PUBL­
DG­
037­
96)
and
Groundwater
Sampling
Field
Manual
(
PUBL­
DG­
038­
96).

9.4.3
Indicator
Parameter
­
Preventive
Action
Limits
Indicator
Parameter
­
Preventive
Action
Limits
are
calculated
using
a
minimum
of
eight
sample
analysis
results
available
from
a
representative
background
well
in
accordance
with
the
procedures
in
s.
NR
140.20,
Wis.
Adm.
Code.

9.4.4
Groundwater
Monitoring
Forms
Results
of
the
groundwater
analyses
shall
be
summarized
and
reported
on
Groundwater
Monitoring
Forms
supplied
by
the
Department.
This
report
form
is
to
be
returned
to
the
Department
no
later
than
the
date
indicated
on
the
form.
The
original
and
one
copy
of
the
Groundwater
Monitoring
Form
shall
be
submitted
to
your
DNR
regional
office.
A
copy
of
the
Groundwater
Monitoring
Form
shall
be
retained
by
the
permittee.

9.4.5
Appropriate
Formulas
for
Groundwater
Total
Nitrogen
=
Total
Kjeldahl
Nitrogen
(
mg/
L)
+
[
NO2
+
NO3]
Nitrogen
(
mg/
L)

Organic
Nitrogen
(
mg/
L)
=
Total
Kjeldahl
Nitrogen
(
mg/
L)
­
Ammonia
Nitrogen
(
mg/
L)

9.4.6
Reporting
Depth
to
Groundwater
Depth
to
groundwater
shall
be
reported
in
feet,
to
the
nearest
0.01
foot,
below
the
top
of
the
well
casing.
A
report
shall
be
on
file
with
the
Department
stating
the
well
casing
top
elevation
in
feet
above
mean
sea
level
(
MSL),
to
the
nearest
0.01
foot,
for
each
groundwater
monitoring
well.

9.4.7
Groundwater
Elevation
Groundwater
elevations
shall
be
calculated
by
subtracting
the
depth
to
groundwater
measurement
from
the
well
casing
top
elevation
and
shall
be
reported
in
feet
above
mean
sea
level
(
MSL)
to
the
nearest
0.01
foot.

9.4.8
Groundwater
Grab
Samples
Grab
samples
shall
be
taken
of
the
groundwater
only
after
adequate
removal
or
purging
of
standing
water
within
the
well
casing
has
been
performed.
For
those
wells
which
will
refill
with
water
as
fast
as
the
water
can
be
removed
by
bailing
or
pumping,
four
well
volumes
shall
be
removed
prior
to
sample
collection
and
analysis.
For
those
wells
WPDES
Permit
No.
WI­
0048747­
02­
0
Dane
County
Regional
Airport
25
which
will
not
refill
with
water
as
fast
as
the
water
can
be
removed
by
bailing
or
pumping,
the
existing
volume
of
water
inside
the
well
casing
shall
be
removed
and
samples
collected
after
the
well
has
refilled
to
at
least
half
the
original
volume
in
the
well.

9.4.9
Filtering
of
Groundwater
Samples
All
groundwater
monitoring
well
samples
shall
be
filtered
prior
to
analysis,
except
for
the
portion
used
to
measure
pH
or
field
specific
conductance,
which
shall
be
done
using
an
unfiltered
sample.
While
in­
field
analysis
is
preferred
for
these
two
tests,
laboratory
analysis
done
within
two
hours
of
sample
collection
is
acceptable.
For
the
portion
to
be
filtered,
it
is
preferred
that
filtering
be
performed
in
the
field
immediately
following
sample
collection.
However,
laboratory
filtering
is
acceptable.
Filtering
shall
be
performed
through
a
standard
0.45
micron
filter.

9.4.10
Groundwater
Data
Log
A
data
log
shall
be
used
to
record
the
results
of
all
field
sampling
and
analysis
events.
This
log
shall
include
date
of
sampling
event,
groundwater
sampler's
name,
well
identification,
depth
from
pipetop
to
water,
depth
from
pipetop
to
well
bottom,
time
of
purging
(
start
to
end),
volume
of
water
purged,
indication
of
whether
the
well
was
purged
dry,
time
of
sample
withdrawal,
and
the
following
applicable
field
observations:
pH,
field
conductivity,
temperature,
color,
odor
and
turbidity,
indication
of
whether
field
filtering
was
performed
and
time
of
filtering,
indication
of
cap
and
lock
replaced,
and
comments.

9.4.11
Notification
of
Attaining
or
Exceeding
Groundwater
Quality
Standards
If
the
concentration
of
a
substance
in
groundwater
attains
or
exceeds
a
Preventive
Action
Limit
or
Enforcement
Standard
at
a
point
of
standards
application,
the
permittee
shall
submit
a
letter
along
with
the
groundwater
monitoring
data
notifying
the
Department,
in
accordance
with
ss.
NR
140.24
and
NR
140.26,
Wis.
Adm.
Code,
that
a
Preventive
Action
Limit
or
Enforcement
Standard
has
been
attained
or
exceeded.
WPDES
Permit
No.
WI­
0048747­
02­
0
Dane
County
Regional
Airport
26
10
Summary
of
Reports
Due
FOR
INFORMATIONAL
PURPOSES
ONLY
Description
Date
Page
Annual
Report
No
later
than
September
30th
19
All
submittals
required
by
this
permit
shall
be
submitted
to
the
Central
Office,
101
South
Webster
Street,
P.
O.
Box
7921,
Madison,
WI
53707­
7921,
except
as
follows.
Report
forms
shall
be
submitted
to
the
address
printed
on
the
report
form.
Any
facility
plans
or
plans
and
specifications
for
municipal,
industrial
pretreatment
and
non
industrial
wastewater
systems
shall
be
submitted
to
the
Regional
Plan
Reviewer
(
as
designated
at
www.
dnr.
state.
wi.
us/
org/
water/
wm/
consultant.
html).
Any
construction
plans
and
specifications
for
industrial
wastewater
systems
shall
be
submitted
to
the
Bureau
of
Watershed
Management,
P.
O.
Box
7921,
Madison,
WI
53707­
7921.
