Document ID: EPA-HQ-SFUND-2002-0002-0080
Agency: epa
Document Type: Supporting & Related Material
Title: 
Posted Date: 2002-09-03T04:00Z

HRS
DOCUMENTATION
RECORD
COVER
SHEET
Name
of
Site:
Ashland/
Northern
States
Power
Lakefront
EPA
ID
No.
WISFN0507952
Contact
Persons
Site
Investigation:
Jamie
Dunn
(608)
244
­
1788
Wisconsin
Dept.
of
Natural
Resources
Documentation
Record:
Jeanne
Griffin,
EPA
Region
5
(312)
886
­
3007
DynCorp
I
&
ET,
Inc.
(703)
461
­
2000
Pathways,
Components,
or
Threats
Not
Scored
The
ground
water
migration
pathway
has
not
been
scored
due
to
a
lack
of
actual
contamination
targets
or
nearby
potential
targets
which
results
in
a
relatively
low
pathway
score.
Although
release
to
ground
water
has
been
documented,
the
resulting
ground
water
pathway
score
would
probably
not
contribute
significantly
to
the
overall
site
score;
therefore
the
ground
water
pathway
was
not
scored
as
part
of
the
documentation
record.

The
soil
exposure
pathway
has
not
been
scored
due
to
a
lack
of
sampling
of
nearby
residential
soils.
Thus,
due
to
the
limited
sampling
data
available,
the
soil
exposure
pathway
was
not
scored
as
part
of
the
documentation
record.

The
air
migration
pathway
has
not
been
evaluated
because
there
are
no
data
to
document
observed
releases
to
air
from
the
sources.
Due
to
the
limited
data
available,
the
air
migration
pathway
was
not
scored
as
part
of
the
documentation
record.
1
HRS
DOCUMENTATION
RECORD
Name
of
Site:
Ashland/
Northern
States
Power
Lakefront
EPA
Region:
5
Date
Prepared:
October
30,
2000
Date
Finalized:
September
2002
Street
Address
of
Site:
300
St.
Claire
Street
City,
County,
State:
Ashland,
Ashland
County,
Wisconsin
General
Location
in
the
State:
Northern
Wisconsin
Topographic
Map:
Ashland,
West,
Wisconsin.
USGS.
Photo
revised
1975.

Latitude:
46
o
35'
45".
5"
North
Longitude:
90
o
53'
00"
West
(City
of
Ashland
Former
Sewage
Disposal
Plant
on
Chequamegon
Bay)

Refs:
3
and
4;
Figure
1
of
documentation
record
Scores
Air
Pathway
0.00
Ground
Water
Pathway
0.00
Soil
Exposure
Pathway
0.00
Surface
Water
Pathway
100
HRS
SITE
SCORE
50.00
2
WORKSHEET
FOR
COMPUTING
HRS
SITE
SCORE
S
S
2
1.
Ground
Water
Migration
Pathway
Score
(S
gw
)
(from
Table
3­
1,
line
13)

2a.
Surface
Water
Overland/
Flood
Migration
Component
(from
Table
4­
1,
line
30)
100
10,000
2b.
Ground
Water
to
Surface
Water
Migration
Component
(from
Table
4­
25,
line
28)

2c.
Surface
Water
Migration
Pathway
Score
(S
sw
Enter
the
larger
of
lines
2a
and
2b
as
the
pathway
score.
100
10,000
3.
Soil
Exposure
Pathway
Score
(S
s
(from
Table
5­
1,
line
22)

4.
Air
Migration
Pathway
Score
(S
a
)
(from
Table
6­
1,
line
12)

5.
Total
of
S
gw
2
+
S
sw
2
+
S
s
2
+
S
a
2
10,000
6.
HRS
Site
Score
Divide
the
value
on
line
5
by
4
and
take
the
square
root
50
3
TABLE
4­
1
SURFACE
WATER
OVERLAND/
FLOOD
MIGRATION
COMPONENT
SCORESHEET
Factor
Categories
and
Factors
Maximum
Value
Value
Assigned
DRINKING
WATER
THREAT
Likelihood
of
Release
1.
Observed
Release
550
550
2.
Potential
to
Release
by
Overland
Flow
2a.
Containment
10
2b.
Runoff
25
2c.
Distance
to
Surface
Water
25
2d.
Potential
to
Release
by
Overland
Flow
(lines
2a
x
[2b
+
2c])
500
3.
Potential
to
Release
by
Flood
3a.
Containment
(Flood)
10
3b.
Flood
Frequency
50
3c.
Potential
to
Release
by
Flood
(lines
3a
x
3b)
500
4.
Potential
to
Release
(lines
2d
+
3c,
subject
to
a
maximum
of
500)
500
5.
Likelihood
of
Release
(higher
of
lines
1
and
4)
550
550
Waste
Characteristics
6.
Toxicity/
Persistence
a
10,000
7.
Hazardous
Waste
Quantity
a
100
8.
Waste
Characteristics
100
32
Targets
9.
Nearest
Intake
50
0.0002
10.
Population
10a.
Level
I
Concentrations
b
0
10b.
Level
II
Concentrations
b
0
10c.
Potential
Contamination
b
0.005
10d.
Population
(lines
10a
+
10b
+
10c)
b
0.005
11.
Resources
5
5
12.
Targets
(lines
9
+
10d
+
11)
b
5.0052
4
Factor
Categories
and
Factors
Maximum
Value
Value
Assigned
DRINKING
WATER
THREAT
(Concluded)

Drinking
Water
Threat
Score
13.
Drinking
Water
Threat
Score
([
lines
5
x
8
x
12]/
82,500,
subject
to
a
maximum
of
100)
100
1.067
HUMAN
FOOD
CHAIN
THREAT
Likelihood
of
Release
14.
Likelihood
of
Release
(same
value
as
line
5)
550
550
Waste
Characteristics
15.
Toxicity/
Persistence/
Bioaccumulation
a
5.00E+
8
16.
Hazardous
Waste
Quantity
a
100
17.
Waste
Characteristics
1,000
320
Targets
18.
Food
Chain
Individual
50
45
19.
Population
19a.
Level
I
Concentrations
b
19b.
Level
II
Concentrations
b
0.03
19c.
Potential
Human
Food
Chain
Contamination
b
19d.
Population
(lines
19a
+
19b
+
19c)
b
0.03
20.
Targets
(lines
18
+
19d)
b
45.03
Human
Food
Chain
Threat
Score
21.
Human
Food
Chain
Threat
Score
([
lines
14
x
17
x
20]/
82,500,
subject
to
a
maximum
of
100)
100
96.06
5
Factor
Categories
and
Factors
Maximum
Value
Value
Assigned
ENVIRONMENTAL
THREAT
Likelihood
of
Release
22.
Likelihood
of
Release
(same
value
as
line
5)
550
550
Waste
Characteristics
23.
Ecosystem
Toxicity/
Persistence/
Bioaccumulation
a
5.00
E+
8
24.
Hazardous
Waste
Quantity
a
100
25.
Waste
Characteristics
1,000
320
Targets
26.
Sensitive
Environments
26a.
Level
I
Concentrations
b
0
26b.
Level
II
Concentrations
b
50
26c.
Potential
Contamination
b
0
26d.
Sensitive
Environments
(lines
26a
+
26b
+
26c)
b
50
27.
Targets
(value
from
26d)
b
50
Environmental
Threat
Score
28.
Environmental
Threat
Score
([
lines
22
x
25
x
27]/
82,500,
subject
to
a
maximum
of
60)
60
60
SURFACE
WATER
OVERLAND/
FLOOD
MIGRATION
COMPONENT
SCORE
FOR
A
WATERSHED
29.
Watershed
Score
c
(lines
13
+
21
+
28,
subject
to
a
maximum
of
100)
100
100
SURFACE
WATER
OVERLAND/
FLOOD
MIGRATION
COMPONENT
SCORE
30.
Component
Score
(S
of
)
c
,
(highest
score
from
line
29
for
all
watersheds
evaluated,
subject
to
a
maximum
of
100)
100
100
a
Maximum=
value
applies
to
waste
characteristics
category.
b
Maximum
value
not
applicable.
c
Do
not
round
to
nearest
integer.
6
REFERENCES
Ref.
No.
Description
of
the
Reference
1.
U.
S.
Environmental
Protection
Agency
(EPA).
Hazard
Ranking
System,
40
CFR
Part
300,
Appendix
A.
December
14,
1990.
Excerpt,
1
page.

2.
EPA.
Superfund
Chemical
Data
Matrix.
June
1996.

3.
U.
S.
Geological
Survey
(USGS),
7.5
Minute
Series
Topographic
Quadrangle
Map
of
Ashland
West,
Wisconsin,
Scale
1:
24000,
Photo
revised
1975,
1
map.

4.
EPA.
Latitude
and
Longitude
Calculation
Worksheet.
2
pages.

5.
Dames
and
Moore.
Site
Investigation
Report.
August
1995,
326
pages.

6.
Short
Elliott
Hendrickson,
Inc.
Ashland
Lakefront
Property
Existing
Conditions
Report.
February
1995,
312
pages.

7.
Dames
and
Moore.
Supplemental
Facility
Site
Investigation
and
Remedial
Action
Options
Evaluation
Report.
March
1999,
332
pages.

8.
Photographs,
Maps,
and
Diagrams.
Ashland
Lakefront
Project.
16
pages.

9.
Michael
Best
and
Friedrich,
LLP.
Ashland
Lakefront
Project,
Affidavits
of
Tom
Roy,
John
Selner,
Gordon
F.
Parent,
Frank
Kucinski,
Thomas
W.
Nelson,
and
Eugene
Boyle,
and
Schroeder's
Articles
of
Incorporation.
February
10,
2000.
59
pages.

10.
Wisconsin
Department
of
Natural
Resources.
Superfund
Pre­
CERCLA
Program
Sampling
Report:
Ashland/
NSP
Lakefront.
7
pages.

11.
Wisconsin
State
Laboratory
of
Hygiene,
Environmental
Sciences
Section,
Sample
Results
for
OK­
002393
to
OK002403.
February
29,2000.
152
pages.

12.
Short
Elliott
Hendrickson
Inc.
Sediment
Investigation
Report,
Ashland
Lakefront
Property,
Chequamegon
Bay
­
Ashland,
Wisconsin.
July
1996,
422
pages.

13.
US
Department
of
Health
and
Human
Services,
Agency
for
Toxic
Substances
and
Disease
Registry.
Health
Consultation,
Contaminated
Chequamegon
Bay
Sediments
at
Kreher
Park,
Ashland,
Ashland
County,
Wisconsin.
October
25,
1999.
10
pages.

14.
Dames
and
Moore.
Supplemental
Site
Investigation
for
the
Northern
States
Power
Facility,
Ashland,
Wisconsin.
October
22,
1999,
225
pages.

15.
Wisconsin
State
Laboratory
of
Hygiene.
Volatile
Organic
Compounds
Sample
Results
for
OK­
002392
to
OK002393.
February
29,2000,
317
pages.

16.
Short
Elliott
Hendrickson
Inc.
Ashland
Lakefront
Property
Contaminated
Sediments,
Ecological
Risk
Assessment,
Ashland,
Wisconsin.
October
1998,
254
pages.

17.
Dames
and
Moore.
Remedial
Action
Options
Feasibility
Study
­
Final
Report
for
the
Ashland
Lakefront
Site,
Prepared
for
Northern
States
Power,
Ashland,
Wisconsin.
March
1,
1999,
128
pages.

18.
US
Geological
Survey.
Ashland,
Wisconsin,
1953.,
Scale
1:
250,000,
1
map
(For
Surface
Water
Target
Distance
Limit).
7
19.
Web
Sites:
United
States
Environmental
Protection
Agency
(Accessed
June
6,
2000)
http://
www.
epa.
gov/
grtlakes/
fund/
projects/
99projects/
ashland.
html
Wisconsin
Department
of
Natural
Resources
(Accessed
June
7,2000)
http://
www.
dnr.
state.
wi.
us/
org/
land/
er/
factsheets/
birds/
Comtern.
h
tml
http://
www.
dnr.
state.
wi.
us/
org/
land/
er/
factsheets/
birds/
images/
ma
p12.
gif
20.
Northern
States
Power.
Ashland
Lakefront
Project,
USEPA
Briefing.
February
1,
2000,
23
pages.

21.
Dobbins,
William,
Wisconsin
Department
of
Natural
Resources.
Memorandum
to
James
Dunn,
Subject:
Ashland
Water
Supply.
August
4,
2000,
3
pages.

22.
State
of
Wisconsin.
Annual
Report
of
the
Ashland
Light,
Power
&
Street
Railway
Co.,
for
the
years
ending
1909
to
1915;
1917
to
1922;
1938,
1939,
1941,
and
1944,
128
pages.

23.
Randal
V.
Falstad
and
James
R.
Dunn.
Interview
with
Gordon
Parent,
October
19,
1998,
2
pages.

24.
Greeley
and
Hansen
Engineers.
Record
Drawings:
Junction
Chamber,
Claire
Street
and
Third
Avenue
East
(March
1951);
and
Waste
Water
Treatment
Plant
Plans
(1958),
4
pages.

25.
Strand,
Fred,
Wisconsin
Department
of
Natural
Resources.
Memorandum
to
Jamie
Dunn:
Common
Terns.
July
27,
2000,
1
page.

26.
Schram,
Stephen,
Wisconsin
Department
of
Natural
Resources.
Memorandum
to
Jamie
Dunn:
Fishing
on
Chequamegon
Bay.
July
27,
2000,
1
page.

27.
Wisconsin
Department
of
Natural
Resources.
Superfund
Pre­
CERCLA
Program
Scope
of
Work/
Sampling
Plant:
Ashland/
NSP
Lakefront.
13
pages.

28.
Wisconsin
Department
of
Natural
Resources.
Memo:
Detection
Limits.
July
10,
2000,
3
pages.

29.
Khazae,
Charlene.
Chemist.
Wisconsin
Department
of
Natural
Resources.
Letter
to
Ms.
Griffin:
Ashland
/NSP
Lakefront
Site
Data
Package.
May
2,
2000,
48
pages.

30.
Wisconsin
Department
of
Natural
Resources.
The
Endangered
and
Threatened
Species
of
Wisconsin,
Status,
Distribution,
and
Life
History,
Publication
No.
ER­
091.
June,
1997,
7
pages.
8
Site
Overview
The
Ashland/
Northern
States
Power
Lakefront
site
is
located
in
Ashland,
Wisconsin.
The
site
is
bordered
by
US
Highway
2
to
the
south,
Prentice
Avenue
to
the
east,
Ellis
Avenue
to
the
west,
and
Chequamegon
Bay
to
the
north.
The
properties
on
which
contamination
is
located
encompass
approximately
12
acres
and
from
south
to
north
include
Northern
States
Power
Company
(NSP)
(formerly
the
location
of
a
manufactured
gas
plant),
Wisconsin
Central
Limited
Railroad
corridor,
City
of
Ashland's
old
waste
water
treatment
plant/
Kreher
Park,
and
contaminated
sediments
in
Chequamegon
Bay.
The
site
encompasses
contamination
in
two
sources,
sediments
in
Chequamegon
Bay,
and
areas
where
contamination
has
migrated
as
a
result
of
activities
conducted
by
the
former
manufactured
gas
plant
that
operated
on
the
NSP
property.

The
lakefront
portion
of
the
site
has
been
the
location
of
industrial
activities
over
the
past
century
and
a
half
and
currently
consists
of
a
land­
filled
area
in
Kreher
Park.
A
series
of
sawmills
operated
on
the
lakefront
from
the
early
1880's
through
1931.
The
City­
owned
parcels
of
the
lakefront
were
created
anthropogenically
in
the
late
1800s
and
early
1900s
by
the
placement
of
fill
materials
into
Chequamegon
Bay.
The
fill
material
identified
to
date
includes
wood
wastes,
clay,
silt,
peat,
sand.
Fill
soils
typically
consist
of
a
surficial
soil
layer
overlying
a
layer
of
slab
wood
and
sawdust
mixed
with
some
soils.
In
the
western
portion,
the
fill
material
was
mixed
with
demolition
waste.
The
uncontrolled
filling
of
the
rest
of
this
area
occurred
during
and
after
the
operation
of
the
sawmills.
This
area
is
transected
from
the
east
to
the
west
by
a
bluff
facing
north
at
the
location
of
the
pre­
fill
natural
shoreline.
Presently
the
Ashland
lakefront
is
Kreher
Park,
a
recreational
park
with
fishing,
swimming,
boating,
and
camping
amenities.
The
Wisconsin
Central
Limited
Railroad
bisects
the
Ashland
Lakefront/
Kreher
Park
area
and
the
Northern
States
Power
property,
which
is
adjacent
on
the
south
of
Kreher
Park.

Just
south
of
the
Chequamegon
Bay
Lakefront/
Kreher
Park
area
is
the
NSP
property,
which
was
the
location
of
a
former
manufactured
gas
plant
(MGP).
During
the
MGP
operation,
residual
coal
tar
was
produced
as
a
by­
product
from
the
manufacture
of
coal
gas
and
water
gas.
On
the
NSP
property,
a
ravine
extended
from
south
to
north,
emptying
out
at
the
natural
shoreline
to
the
north
near
the
railroad
tracks.
This
ravine
was
open
at
the
start­
up
of
gas
production
and
was
filled
by
the
early
1900s.
The
fill
material
includes
cinders
ash,
boiler
slag,
demolition
debris
and
soil.
Ground
water
in
the
vicinity
of
the
ravine
is
contaminated
with
PAHs,
VOCs,
and
DNAPL
oil,
and
tar.
Ground
water
in
the
vicinity
of
the
former
ravine
moves
from
south
to
north,
towards
the
natural
shoreline.
Just
north
of
the
ravine
along
this
natural
shoreline,
at
the
former
mouth
of
the
ravine,
is
a
seep
where
water,
oils,
and
tar
seep
to
the
land
surface.
Historic
drawings
of
record
note
a
pipe
running
from
the
MGP
north
with
a
caption,
2"
to
abandon
tar
dump.

Contaminated
sediments
in
Chequamegon
Bay
are
located
directly
off
shore
of
Kreher
Park.
Sediments
in
this
area
contain
VOCs
and
PAHs
and
DNAPL
oils
and
tars.
Disturbance
of
these
contaminated
sediments
releases
oils
and
tars
to
the
water
column
and
surface,
which
causes
a
slick
to
form
on
the
water
surface.
Fishing
is
encouraged
in
Chequamegon
Bay,
and
the
Common
Tern,
a
state
endangered
species,
nests
in
Chequamegon
Bay.

Since
1989,
the
City
of
Ashland
and
the
Wisconsin
Department
of
Natural
Resources
have
investigated
contamination
on
the
lakefront
property
and
subsequently
(1995)
on
the
NSP
property.
The
landfilled
area
at
the
Ashland
Lakefront/
Kreher
Park
and
the
former
ravine
have
been
identified
as
sources
contributing
to
the
contamination
in
Chequamegon
Bay.
9
Insert
Figure
1:
Site
Location
Map
here.
Source
Characterization
10
2.2
SOURCE
CHARACTERIZATION
2.2.1
SOURCE
IDENTIFICATION
Name
of
source:
Former
Ravine
Area
Number
of
source:
1
Source
Type:
Landfill
Description
and
Location
of
Source
with
reference
to
a
map
of
the
site:
(Figure
2
of
HRS
documentation
record.

A
manufactured
gas
plant
(MGP)
facility
formerly
owned
by
the
Ashland
Light,
Power,
and
Street
Railway
Company,
the
Lake
Superior
District
Light
Company
and
a
succession
of
other
companies
operated
on
the
southwest
corner
of
3
rd
Avenue
and
Prentice
Street
near
the
southern
end
of
the
ravine
area
from
the
late
1800's
to
approximately
1947
in
Ashland,
Wisconsin
(Ref.
5,
pages
ES­
1,
1;
Ref.
5,
Figure
1­
3;
Ref.
22,
page
2).
The
MGP
discontinued
the
manufacture
of
natural
gas
from
coal
at
this
time,
and
has
since
been
converted
to
an
office
and
maintenance
facility
(Ref.
5,
page
1)
The
MGP
has
changed
ownership
over
time
and
Northern
States
Power
Plant
(NSP)
presently
operates
a
service,
storage
and
maintenance
facility
at
this
location
(Ref.
5,
page
1).
The
NSP
property
encompasses
approximately
2
acres.
Throughout
its
operation,
the
MGP
produced
gas
utilizing
different
processes,
equipment,
and
feedstock.
The
plant
reportedly
produced
gas
by
coal
carbonization
until
approximately
1920,
when
the
plant
was
reportedly
converted
to
a
carburetted
water
gas
process
(Ref.
5,
pages
ES­
1,
1).

During
the
MGP
operation,
residual
coal
tar
was
produced
as
a
by­
product
from
the
manufacture
of
coal
gas
and
water
gas
(Ref.
5,
page
1).
These
wastes
included
coal
tars
and
oils.
Prior
to
1939,
no
records
of
tar
sale
are
available.
From
1939
to
1947,
some
tar
was
collected
for
sale
(Ref.
5,
page
1;
Ref.
22,
pages
1,
3
to
5,
7,
9
to
11,
13,
15
to
17,
19,
21
to
23,
25,
27
to
29,
31,
33
to
35,
37,
39
to
43,
46
to
51,
53,
56,
59
to
61,
63,
66,
68
to
70,
72,
76
to
78,
80,
83,
85
to
87,
89,
92
to
95,
97,
103
to
106,
108,
111,
113
to
115,
117,
118,
120,
121,
123,
124,
126,
127).
Information
on
the
disposition
of
the
residual
coal
tar
that
was
not
sold
is
unavailable
(Ref.
5,
page
2).
On­
site
fill
soils
contaminated
with
coal
tar
have
been
found
with
free
product
DNAPL
coal
tar
at
the
base
of
a
former
ravine
that
extends
north­
south
across
the
NSP
facility,
indicating
that
some
of
the
coal
tar
was
disposed
on
site
(Ref.
5,
page
2;
Ref.
22,
pages
1,
3
to
5,
7,
9
to
11,
13,
15
to
17,
19,
21
to
23,
25,
27
to
29,
31,
33
to
35,
37,
39
to
43,
46
to
51,
53,
56,
59
to
61,
63,
66,
68
to
70,
72,
76
to
78,
80,
83,
85
to
87,
89,
92
to
95,
97,
103
to
106,
108,
111,
113
to
115,
117,
118,
120,
121,
123,
124,
126,
127).
Historic
drawings
of
record
note
a
pipe
running
from
the
MGP
north
with
a
caption,
2"
to
abandoned
tar
dump
(Ref.
8,
page
15;
Ref.
23,
pages
1,
2).

Prior
to
1909,
a
ravine
extended
through
the
upper
bluff
area
in
the
vicinity
of
the
NSP
facility.
The
ravine
was
a
natural
erosional
feature,
which
historically
discharged
surface
water
from
the
upper
bluff
area
to
Chequamegon
Bay
(Ref.
5,
page
2,
Figure
1­
3,
Figure
1­
4,
Figure
4­
1;
Ref.
8,
pages
2,
3).
The
ravine
was
filled
by
1923
based
on
review
of
historic
Sanborn
Fire
Insurance
maps
of
the
vicinity
(Ref.
8
pages
2,
15,
16;
Ref.
5,
page
ES­
1;
Ref.
12,
page
2).
The
location
of
the
ravine
generally
conforms
to
what
was
anticipated
based
on
Sanborn
maps
of
the
area
(Ref.
5,
page
14).
The
former
ravine
was
a
natural
feature
that
began
at
the
south
edge
of
the
NSP
facility
near
Lake
Shore
Drive
and
extends
to
the
Wisconsin
Central
Limited
Railroad
on
the
north.
(Ref.
5,
pages
1,
2,
Figure
1­
2).
The
mouth
of
the
ravine
appears
to
be
more
narrow
on
the
Sanborn
maps
(Ref.
5,
page
14,
15)
The
fill
of
the
ravine
is
estimated
to
be
29,400
cubic
yards
(Ref.
5,
pages
ES­
1,
2,
14,
15).

A
site
investigation
report
prepared
for
NSP
in
1995
documents
contamination
in
the
former
ravine
area.
According
to
this
report
a
total
of
24
soil
borings
were
advanced
on
the
NSP
property
to
define
the
thickness
of
backfill
material
placed
in
the
former
ravine.
(Ref.
5
page
9,
13,
14).
Soil
boring
locations
were
selected
based
on
five
previous
soil
borings
(SB­
1
through
SB­
5)
advanced
north
Source
Characterization
11
of
St.
Claire
Street
on
the
NSP
property
by
Cedar
Corp,
and
three
soil
borings
(B­
1,
B2/
TW­
13,
and
B­
3)
advanced
along
St.
Claire
Street
by
Short
Elliot
and
Hendrickson
(SEH).
Soil
borings
advanced
by
Dames
and
Moore
include
B­
1
through
B­
3,
B­
6
through
B­
22,
and
MW­
1
through
MW­
4
as
shown
on
Figure
4­
1;
see
also
Figure
4­
3
(Ref.
5,
pages
13,
14).
A
1999
Supplemental
investigation
report
prepared
for
NSP
documents
free
product
DNAPL
thickness
of
no
more
than
two
feet
in
monitoring
wells
TW­
13,
MW­
9,
and
MW15
and
free
product
DNAPL
thickness
of
greater
than
20
feet
in
monitoring
wells
MW­
13A
and
MW­
13B
all
within
the
ravine(
Ref.
14,
page
8,
Table
3,
and
Figure
2).

Soil
and
ground
water
samples
collected
from
the
former
ravine
show
contamination
of
volatile
and
semivolatile
organic
compounds
consistent
with
coal
tar
wastes
(Ref.
5,
pages
5
through
23).

2.2.2
HAZARDOUS
SUBSTANCES
ASSOCIATED
WITH
THE
SOURCE
­
Background
Concentrations:
Sample
B2
Soil
sample
B2
collected
in
the
northeastern
area
of
the
former
ravine
area
was
selected
as
a
background
sample.
The
organic
hazardous
substances
detected
in
Source
1
are
not
naturally
occurring
or
ubiquitous
substances
and
Sample
B2
was
selected
to
document
background
levels
for
contamination
in
Source
1
for
HRS
scoring.
Sample
B2
is
a
soil
boring
sample
collected
at
a
depth
of
0
to
17
feet.
All
substances
used
to
document
Source
1
are
above
the
background
detection
limit
or
significantly
above
the
level
in
Sample
B2
(Ref.
5,
Table
4­
1,
Appendix
A
pages
4,
5,
51,
Appendix
C
pages
5,
6,
18,
23,
30,31).

Sample
ID:
B2
Sample
Type:
Soil
Date
:4/
27/
95
Hazardous
Substance
Hazardous
Substance
Concentra
tion
Detection
Limit
Reference
Acenaphthylene
ND
120
ug/
kg
Ref.
5,
Appx.
C,
page
5
Anthracene
ND
120
ug/
kg
Ref.
5,
Appx.
C,
page
5
Benzene
ND
2.5
ug/
kg
Ref.
5,
Appx.
C,
page
30
Benzo(
a)
anthracene
ND
120
ug/
kg
Ref.
5,
Appx.
C,
page
5
Benzo
(a)
pyrene
ND
120
ug/
kg
Ref.
5,
Appx.
C,
page
5
Benzo(
b)
fluoranthene
ND
120
ug/
kg
Ref.
5,
Appx.
C,
page
5
Benzo(
k)
fluoranthene
ND
120
ug/
kg
Ref.
5,
Appx.
C,
page
5
Benzo(
g,
h,
i)
perylene
ND
120
ug/
kg
Ref.
5,
Appx.
C,
page
5
n­
Butylbenzene
ND
5.0
ug/
kg
Ref.
5,
Appx.
C,
page
30
Chrysene
ND
120
ug/
kg
Ref.
5,
Appx.
C,
page
5
Ethylbenzene
ND
2.5
ug/
kg
Ref.
5,
Appx.
C,
page
30
Fluoranthene
ND
120
ug/
kg
Ref.
5,
Appx.
C,
page
5
Fluorene
ND
120
ug/
kg
Ref.
5,
Appx.
C,
page
5
Indeno
(1,2,3­
cd)
pyrene
ND
120
ug/
kg
Ref.
5,
Appx.
C,
page
5
Hazardous
Substance
Hazardous
Substance
Concentra
tion
Detection
Limit
Reference
Source
Characterization
12
2­
Methylnaphthalene
ND
120
ug/
kg
Ref.
5,
Appx.
C,
page
5
Naphthalene
ND
10
ug/
kg
Ref.
5,
Appx.
C,
page
30
Phenanthrene
ND
120
ug/
kg
Ref.
5,
Appx.
C,
page
6
Pyrene
ND
120
ug/
kg
Ref.
5,
Appx.
C,
page
6
1,2,4­
Trimethylbenzene
ND
5
ug/
kg
Ref.
5,
Appx.
C,
page
30
1,3,5
Trimethylbenzene
ND
5
ug/
kg
Ref.
5,
Appx.
C,
page
30
Toluene
2.5
ug/
kg
4
ug/
kg
Ref.
5,
Appx.
C,
page
30
Xylenes
ND
10
ug/
kg
Ref.
5,
Appx.
C,
page
31
ND
=
Non
detect
­
Source
Samples:
Soil
Samples
B­
6
(depth
of
0
to
27
feet),
B­
9
(depth
of
0
to
23
feet),
B­
11
(depth
of
0
to
15
feet),
and
B­
13
(depth
of
0
to
21
feet)
are
used
to
document
contamination
in
the
Former
Ravine
Area
(Ref.
5,
pages
14,
Appendix
A
pages
8,
9,
14,
15,
17,
18,
20,
21,
53,
56,
58,
60).
These
samples
were
collected
in
April
and
June
of
1995.
Additional
soil
boring
samples
collected
in
the
Fall
of
1998
in
the
locations
of
MW­
9,
MW­
12,
MW­
15,
B­
23,
B­
24,
B­
25,
B­
26,
B­
27,
B­
28,
B­
29,
B­
30,
B­
31,
and
B­
32
in
the
Former
Ravine
Area
also
document
contamination
in
this
source
(Ref.
7
pages
3­
1,
3­
2,
Tables
3­
4A
and
3­
4B,
and
Figure
3­
1).

Sample
ID
Sampl
e
Type
Date
Hazardous
Substance
Hazardous
Substance
Concentration
Detection
Limit
Reference
B­
11
soil
June
1995
Acenaphthylene
1300
ug/
kg
1300
ug/
kg
Ref.
5,
Table
4­
2
&
Appendix
C,
pg.
11,
12,
SI
B­
9
B­
11
soil
June
1995
Anthracene
360
1300
ug/
kg
120
ug/
kg
1300
ug/
kg
Ref.
5,
Table
4­
2
&
Appendix
C
pg.
9,
10,
11,
12
of
SI
B­
6
B­
11
B­
13
soil
April
1995
Benzene
4.4
ug/
kg
4.3
ug/
kg
16
ug/
kg
2.5
ug/
kg
2.6
ug/
kg
2.5
ug/
kg
Ref.
Table
4­
1;
Appendix
C
pg.
34,
36,
38
B­
9
B­
11
soil
June
1995
Benzo(
a)
anthracene
2100
4700
ug/
kg
120
ug/
kg
1300
ug/
kg
Ref.
5
Appendix
C
pg.
9,
11
Sample
ID
Sampl
e
Type
Date
Hazardous
Substance
Hazardous
Substance
Concentration
Detection
Limit
Reference
Source
Characterization
13
B­
9
B­
11
soil
June
1995
Benzo(
a)
pyrene
2600
5300
ug/
kg
120
ug/
kg
1300
ug/
kg
Ref.
5
Appendix
C,
pg.
9,
11
B­
9
B­
11
soil
June
1995
Benzo(
b)
fluoranthene
2800
4100
ug/
kg
120
ug/
kg
1300
ug/
kg
Ref.
5
Appendix
C,
pg.
9,
11
B­
9
B­
11
soil
June
1995
Benzo(
k)
fluorathene
280
1500
ug/
kg
120
ug/
kg
1300
ug/
kg
Ref.
5
Appendix
C,
pg.
9,
11
B­
9
B­
11
soil
June
1995
Benzo(
g,
h,
i)
perylene
1400
2900
ug/
kg
120
ug/
kg
1300
ug/
kg
Ref.
5
Appendix
C,
pg.
9,
11
B­
13
soil
April
1995
n­
Butylbenzene
9.4
ug/
kg
5.0
ug/
kg
Ref.
5
Table
4­
1,
Appendix
C,
pg,
38
B­
9
B­
11
soil
June
1995
Chrysene
2300
5600
ug/
kg
120
ug/
kg
1300
ug/
kg
Ref.
5
Appendix
C,
pg.
9,
11
B­
13
soil
April
1995
Ethylbenzene
14
ug/
kg
2.5
ug/
kg
Ref.
5
Table
4­
1,
Appendix
C,
pg.
38
B­
9
B­
11
soil
June
1995
Fluoranthene
2100
6000
ug/
kg
120
ug/
kg
1300
ug/
kg
Ref.
5
Appendix
C,
pg.
9,
11
B­
9
soil
June
1995
Fluorene
130
ug/
kg
120
ug/
kg
Ref.
5
Appendix
C,
pg.
9
B­
9
B­
11
soil
June
1995
Indeno
(1,2,
3­
cd)
pyrene
1100
2400
ug/
kg
120
ug/
kg
1300
ug/
kg
Ref.
5
Appendix
C,
pg.
9,
11
B­
13
soil
June
1995
2­
Methylnaphthalene
1400
ug/
kg
130
ug/
kg
Ref.
5
Appendix
C,
pg.
13
B­
13
soil
June
1995
Naphthalene
470
ug/
kg
130
ug/
kg
Ref.
5
Appendix
C,
pg.
13
B­
11
B­
13
soil
April
1995
Naphthalene
16
ug/
kg
140
ug/
kg
10
ug/
kg
10
ug/
kg
Ref.
5
Appendix
C,
pg.
34,
38
Sample
ID
Sampl
e
Type
Date
Hazardous
Substance
Hazardous
Substance
Concentration
Detection
Limit
Reference
Source
Characterization
14
B­
9
B­
11
B­
13
soil
June
1995
Phenanthrene
650
3700
170
ug/
kg
120
ug/
kg
1300
ug/
kg
130
ug/
kg
Ref.
5
Appendix
C,
pg.
10,
12,
14
B­
9
B­
11
B­
13
soil
June
1995
Pyrene
5000
12000
420
ug/
kg
120
ug/
kg
1300
ug/
kg
130
ug/
kg
Ref.
5
Appendix
C,
pg.
10,
12,
14
B­
13
soil
April
1995
1,2,4­
Trimethylbenzene
9.7
ug/
kg
5.0
ug/
kg
Ref.
5
Table
4­
1,
Appendi
x
C,
pg.
38
B­
13
soil
April
1995
1,3,5
Trimethylbenzene
7.9
ug/
kg
5.0
ug/
kg
Ref.
5
Table
4­
1,
Appendix
C,
pg.
38
B­
6
soil
April
1995
Toluene
12
ug/
kg
2.5
ug/
kg
Ref.
5
Tab1e
4­
1,
Appendi
x
C,
pg.
36
B­
13
soil
April
1995
Xylenes
46
ug/
kg
10
ug/
kg
Ref.
5
Table
4­
1,
Appendi
x
C,
pg.
38,
39
Source
Characterization
15
2.2.3
HAZARDOUS
SUBSTANCES
AVAILABLE
TO
A
PATHWAY
Release
via
overland
migration
and/
or
flood:

Surface
water
flows
either
to
the
City
of
Ashland
storm
sewer
system
or
discharges
to
Chequamegon
Bay.
Historical
site
maps
reveal
an
open
sewer
extending
across
the
west
side
of
the
Ashland
Lakefront
property
was
present
until
1951
(Ref.
24,
page
3).
Drainage
from
the
NSP
property,
which
includes
the
area
of
Source
1,
is
to
the
north
(Ref.
5,
page
7).
To
the
northwest,
the
site
slopes
steeply
to
the
Wisconsin
Central
Limited
Railroad
property,
and
then
to
the
City
of
Ashland's
Kreher
Park,
beyond
which
is
Chequamegon
Bay
(Ref.
7,
page
2­
1;
Ref.
8
pages
5,
6,
7).
The
area
of
the
former
ravine
just
south
of
St.
Claire
Street
is
covered
by
a
paved
parking
lot,
vehicle
storage
areas
and
an
office
building.
Additional
paved
parking
and
a
residential
area
are
located
at
the
southern
portion
of
the
former
ravine
near
Lakeshore
Drive.
The
northern
portion
of
the
former
ravine
is
a
fenced,
outdoor,
gravel
storage
area;
there
is
no
indication
of
containment
features
such
as
a
maintained
engineered
cover,
functioning
run­
on
control
system
or
a
runoff
management
system
in
this
area
(Ref.
5,
page
7
and
Figure
4­
1.)
The
pavement,
vehicle
storage
areas,
and
the
office
building
do
not
provide
the
entire
former
ravine
with
a
maintained
engineer
cover
or
functioning
run­
on
and
run­
off
control.
Because
the
entire
former
ravine
does
not
have
functioning
run­
on
control
and
runoff
management
system,
a
containment
factor
value
of
10
is
assigned
to
Source
1
(Ref.
1,
HRS
Table
4­
2;
Ref.
5,
pages
5
to
23,
58
to
60,
and
Figure
4­
1.
Ref.
7,
page
2)
Contamination
in
Source
1
extends
below
the
water
table
(Ref.
5,
pg.
14,
Figures
4­
3,
4­
4,
and
4­
5).
Relatively
high
concentrations
of
VOC,
SVOC,
and
PAH
contaminants
are
present
in
surface
and
subsurface
soils
as
well
as
ground
water
collected
from
the
monitoring
wells
on
Source
1
(Ref.
5,
pages
5
to
23,
58
to
60).
Source
Characterization
16
2.2.4
HAZARDOUS
WASTE
QUANTITY
2.4.2.1.1.
Hazardous
Constituent
Quantity
Description
Insufficient
information
is
available
to
determine
the
hazardous
constituent
quantity.

Sum
(pounds):

Hazardous
Constituent
Quantity
Assigned
Value:

2.4.2.1.2.
Hazardous
Wastestream
Quantity
Description
Insufficient
information
is
available
to
determine
the
hazardous
waste
stream.

Sum
(pounds):
Sum
of
Wastestream
Quantity/
5,000
(Table
2­
5):
Hazardous
Wastestream
Quantity
Assigned
Value:

2.4.2.1.3.
Volume
Description
Estimates
for
the
fill
in
the
ravine
were
prepared
for
the
Northern
States
Power
Company
by
Dames
and
Moore.
The
fill
in
the
ravine
was
estimated
as
29,400
cubic
yards
(yd
3
)
(Ref.
5,
pages
ES­
1,
4,
14,
15)

Source
Type
Description
(#
drums
or
dimensions)
Units
(yd
3
/gal)
References
Landfill
29,400
yd
3
Ref.
5,
page
ES­
1,
2,
14,
15
Sum
(yd
3
/gal):
29,400
yd
3
Equation
for
Assigning
Value
(HRS
Table
2­
5):
29,400
yd
3
÷
2,500
=
11.76
Volume
Assigned
Value:
11.76
2.4.2.1.4.
Area
Not
Evaluated.
Source
Characterization
17
Insert
Figure
2:
Source
1
here
Source
Characterization
18
Name
of
source:
Ashland
Lakefront/
Kreher
Park
Area
Number
of
source:
2
Source
Type:
Landfill
Description
and
Location
of
Source
(with
reference
to
a
map
of
the
site):
Ashland
Lakefront
Property/
Kreher
Park
Area
(Figure
3
of
documentation
record).

Source
2
is
approximately
10
acres
in
size
and
is
currently
owned
by
the
City
of
Ashland
(Ref.
6,
page
2).
It
is
bordered
by
Prentice
Avenue
to
the
east,
Ellis
Avenue
to
the
west,
Chequamegon
Bay
to
the
North
and
the
Wisconsin
Central
railroad
to
the
south.
The
former
City
of
Ashland
Waste
Water
Treatment
Plant
(WWTP)
facility
is
located
on
the
northeast
corner
of
this
source
(Ref.
6,
pages
1,
2,
3,
Figure
2).

Source
2
has
been
the
location
of
industrial
activities
over
the
past
century
and
a
half
and
currently
is
the
location
of
Kreher
Park,
a
recreational
park.
A
series
of
sawmills
operated
in
this
area
from
the
early
1880's
through
1931
(Ref.
6,
page
16;
Ref.
16,
page
4;
Ref.
17,
page
ES­
1).
These
facilities
generated
wood
wastes
fill
material.
The
City­
owned
parcels
of
the
lakefront
were
created
anthropogenically
in
the
late
1800s
and
early
1900s
by
the
placement
of
fill
materials
into
Chequamegon
Bay
(Ref.
6,
page
4;
Ref.
16,
page
4).
The
fill
material
identified
to
date
includes
wood
wastes,
clay,
silt,
peat,
and
sand.
Fill
soils
typically
consist
of
a
surficial
soil
layer
overlying
a
layer
of
slab
wood
and
sawdust
mixed
with
some
soils
(Ref.
6,
page
4).
In
the
western
portion
of
the
Ashland
Lakefront,
the
City
operated
this
area
as
a
waste
disposal
facility.
Uncontrolled
filling
of
the
rest
of
this
area
occurred
during
and
after
the
operation
of
the
sawmills
(Ref.
17,
page
2­
4).
This
area
is
transected
from
the
east
to
the
west
by
a
bluff
facing
north
at
the
location
of
the
pre­
fill
natural
shoreline
(Ref.
6,
pages
3,
4,
16).
One
block
south
of
the
Ashland
Lakefront
is
the
NSP
Company,
the
location
of
a
former
MGP
operation
(Ref.
6,
pages
3,
16,
Figure
2;
Ref.
5,
Figure
1­
2).

During
the
MGP
operation,
residual
coal
tar
was
produced
as
a
by­
product
from
the
manufacture
of
coal
gas
and
water
gas
(Ref.
5,
page
1).
Prior
to
1939,
no
records
of
tar
sale
are
available.
From
1939
to
1947,
some
tar
was
collected
for
sale
(Ref.
5,
page
1;
Ref.
22,
pages
1,
3
to
5,
7,
9
to
11,
13,
15
to
17,
19,
21
to
23,
25,
27
to
29,
31,
33
to
35,
37,
39
to
43,
46
to
51,
53,
56,
59
to
61,
63,
66,
68
to
70,
72,
76
to
78,
80,
83,
85
to
87,
89,
92
to
95,
97,
103
to
106,
108,
111,
113
to
115,
117,
118,
120,
121,
123,
124,
126,
127).
Information
on
the
disposition
of
the
residual
coal
tar
that
was
not
sold
is
unavailable
(Ref.
5,
page
2).
Onsite
fill
soils
contaminated
with
coal
tar
have
been
found
with
free
product
DNAPL
coal
tar
at
the
base
of
a
former
ravine
that
extends
north­
south
across
the
NSP
facility,
indicating
that
some
of
the
coal
tar
was
disposed
on
site
(Ref.
5,
pages
1,
2).
Historic
drawings
of
record
note
a
pipe
running
from
the
MGP
north
with
a
caption,
2"
to
abandoned
tar
dump
(Ref.
23,
pages
1,
2).
Historic
drawings
of
record
for
the
design
of
the
waste
water
treatment
plant
denote
a
"waste
tar
dump"
located
south
of
the
waste
water
treatment
plant
(Ref.
6,
page
7,
8,
9;
Ref.
8,
pages
1
through
5,
8,
9,
15,
16;
Ref.
9,
pages
11,
12;
Ref.
24,
page
4).
Contamination
in
soil
and
groundwater
in
both
the
Ashland
Lakefront
and
the
former
ravine
indicate
that
the
former
ravine
may
be
a
conduit
for
contamination
onto
the
Ashland
Lakefront/
Kreher
Park
(Ref.
5,
page
ES­
1;
Figures
1­
3,
4­
1;
Ref.
6,
page
18).

Eyewitness
accounts
indicate
that
a
pipe
for
the
transport
of
tar
ran
from
the
MGP
to
the
southern
portion
of
Kreher
Park
in
the
general
location
of
the
seep
(Ref.
23,
pages
1,
2).
Eyewitness
accounts
also
indicate
that
open
tar
creosote
pits
may
have
been
located
south
of
the
present
WWTP
and
were
used
to
treat
lumber
on
the
Schroeder
property,
a
former
saw
mill
which
operated
on
the
Ashland
Lakefront
(Ref.
9,
pages
3,
6,
9,
11,
12,
17,
19;
Ref.
20,
pages
6,
20).

In
1989
the
City
of
Ashland
authorized
Northern
Environmental
to
perform
an
investigation
on
the
Kreher
Park
area
for
the
possible
expansion
of
the
existing
wastewater
treatment
facility,
which
at
the
time
operated
on
the
north
side
of
the
park,
discharging
to
the
bay
(Ref.
5,
page
2).
The
discovery
of
contamination
from
what
was
believed
to
be
creosote
wastes
in
the
subsoils
and
ground
water
at
Source
Characterization
19
Kreher
Park
prompted
the
City
to
abandon
the
project,
and
construct
a
new
treatment
facility
at
another
location.
Subsequently,
the
WDNR
authorized
Short
Elliott
and
Hendrickson
Inc.
(SEH)
under
the
Wisconsin
Environmental
Repair
Fund
to
perform
an
assessment
of
the
contamination
at
the
Kreher
Park
area
(Ref.
5,
page
2).
SEH
performed
an
historical
review,
excavated
a
series
of
test
pits
at
the
Ashland
Lakefront
property
and
installed
and
sampled
ground
water
monitoring
wells
at
Kreher
Park
and
at
the
NSP
site.
Soil
borings
and
contaminated
ground
water
in
this
area
have
shown
elevated
levels
of
hazardous
substances.
(Ref.
5,
page
2;
Ref.
6
page
1,
Tables
2,
3,
4,
5,
6).

2.2.2
HAZARDOUS
SUBSTANCES
ASSOCIATED
WITH
THE
SOURCE
­
Background
Concentrations:
A
soil
sample
from
TP­
2
(test
pit
number
2)
at
a
depth
of
2
to
4
feet
is
used
as
a
background
sample
for
the
Ashland
Lakefront/
Kreher
Park
area.
This
sample
is
from
fill
soil
and
is
located
in
the
center
of
Source
2;
because
the
organic
hazardous
substances
detected
in
Source
2
are
not
naturally
occurring
or
ubiquitous
substances,
Sample
TP­
2
was
selected
to
document
background
levels
for
contamination
in
Source
2
for
HRS
scoring.
All
substances
used
to
document
Source
2
are
above
the
background
detection
limit
or
significantly
above
the
level
in
sample
TP­
2
(Ref.
6,
Tables
3
&
4,
Appendix
F,
pages
42
&
43;
Figure
3
of
HRS
documentation
record).

Sample
Id:
TP­
2
Sample
Type:
Fill
Soil
Depth:
2
­
4
feet
Date:
9/
7/
94
Hazardous
Substance
Hazardous
Substance
Concentration
Detection
Limit
Reference
Acenaphthene
ND
0.40
ug/
g
Ref.
6,
Tables
3
&
4,
Appendix
F,
pg.
43;

Acenaphthylene
ND
0.40
ug/
g
Ref.
6,
Tables
3
&
4,
Appendix
F,
pg.
43
Anthracene
0.520
ug/
g
0.40
ug/
g
Ref.
6,
Tables
3
&
4,
Appendix
F,
pg.
43
Benzene
ND
0.002
ug/
g
Ref.
6,
Tables
3
&
4,
Appendix
F
pg.
42
Benzo(
a)
anthracene
2.78
ug/
g
0.40
ug/
g
Ref.
6,
Tables
3
&
4,
Appendix
F,
pg.
43
Benzo(
a)
pyrene
2.03
ug/
g
0.40
ug/
g
Ref.
6,
Tables
3
&
4,
Appendix
F,
pg.
43
Benzo(
b)
fluoranthene
3.14
ug/
g
0.40
ug/
g
Ref.
6,
Tables
3
&
4,
Appendix
F,
pg.
43
Benzo(
k)
fluoranthene
0.972
ug/
g
0.40
ug/
g
Ref.
6,
Tables
3
&
4,
Appendix
F,
pg.
43
Benzo(
g,
h,
i)
Perylene
2.44
ug/
g
0.40
ug/
g
Ref.
6,
Tables
3
&
4,
Appendix
F,
pg.
43
n­
Butylbenzene
ND
0.012
ug.
g
Ref.
6,
Tables
3
&
4,
Appendix
F
pg.
42
sec­
Butylbenzene
ND
0.012
ug/
g
Ref.
6,
Tables
3
&
4,
Appendix
F,
pg.
42
Hazardous
Substance
Hazardous
Substance
Concentration
Detection
Limit
Reference
Source
Characterization
20
Chrysene
1.92
ug/
g
0.40
ug/
g
Ref.
6,
Tables
3
&
4,
Appendix
F,
pg.
43
Dibenzo(
a,
h)
Anthracene
0.513
ug/
g
0.40
ug/
g
Ref.
6,
Tables
3
&
4,
Appendix
F,
pg.
44
Ethylbenzene
ND
0.012
ug/
g
Ref.
6,
Tables
3
&
4,
Appendix
F,
pg.
43
Fluoranthene
5.70
ug/
g
0.40
ug/
g
Ref.
6,
Tables
3
&
4,
Appendix
F,
pg.
44
Fluorene
0.187
ug/
g
J
0.40
ug/
g
Ref.
6,
Tables
3
&
4,
Appendix
F,
pg.
44
Indeno(
1,2,3­
cd)
Pyrene
2.21
ug/
g
0.40
ug/
g
Ref.
6,
Tables
3
&
4,
Appendix
F,
pg.
44
Isopropylbenzene
ND
0.012
ug/
g
Ref.
6,
Tables
3
&
4,
Appendix
F,
pg.
43
p­
Isopropyltoluene
ND
0.012
ug/
g
Ref.
6,
Tables
3
&
4,
Appendix
F,
pg.
43
2­
Methynaphthalene
ND
0.40
ug/
g
Ref.
6,
Tables
3
&
4,
Appendix
F,
pg.
44
Phenanthrene
2.98
ug/
g
0.40
ug/
g
Ref.
6,
Tables
3
&
4,
Appendix
F,
pg.
44
n­
Propylbenzene
ND
0.012
ug/
g
Ref.
6,
Tables
3
&
4,
Appendix
F,
pg.
43
Pyrene
3.42
ug/
g
0.40
ug/
g
Ref.
6,
Tables
3
&
4,
Appendix
F,
pg.
44
Naphthalene
0.169
ug/
g
J
0.40
ug/
g
Ref.
6,
Tables
3
&
4,
Appendix
F,
pg.
43
Toluene
0.029
ug/
g
0.025
ug/
g
Ref.
6,
Tables
3
&
4,
Appendix
F,
pg.
43
1,2,4­
Trimethylbenzene
ND
0.012
ug/
g
Ref.
6,
Tables
3
&
4,
Appendix
F,
pg.
43
1,3,5­
Trimethylbenzene
ND
0.012
ug/
g
Ref.
6,
Tables
3
&
4,
Appendix
F,
pg.
43
Xylenes
ND
0.012
ug/
g
Ref.
6,
Tables
3
&
4,
Appendix
F,
pg.
43
ND
Non
detect
­
Source
Samples:

Nine
test
pit
samples
were
excavated
on
September
9,
1994,
by
Short
Elliott
Hendrickson
Inc.
from
the
Ashland
Lakefront/
Kreher
Park
area
(Ref.
6,
pages
1,
8).
Analytical
data
from
TP­
1,
and
TP­
3
to
TP­
9
are
used
to
characterize
Source
Characterization
21
contamination
in
Source
2
(Ref.
6,
Table
3,
Appendix
F).
These
samples
consisted
of
fill
soil,
wood
waste,
and
refuse
(Ref
6,
Table
3).
Background
fill
soil
samples
are
compared
to
background
source
soil
samples.
Wood
waste
and
refuse
samples
also
characterize
Source
2
but
these
samples
need
not
be
compared
to
background
soil
samples
for
source
characterization
because
these
are
source
waste
samples.
Additional
sampling
for
the
characterization
of
Source
2
is
also
available
from
the
analytical
data
of
test
wells
and
monitoring
wells
TW­
1
through
TW­
13
and
MW­
1
through
MW­
3
(Ref.
6
Tables
2,
3,
4,
5,
6).

Sample
ID
Sample
Type
Hazardous
Substance
Hazardous
Substance
Concentration
Detection
Limit
Reference
TP­
1
TP­
5
TP­
9
wood
waste
Acenaphthene
6.64
ug/
g
782
ug/
g
4.91
ug/
g
5.6
ug/
g
53
ug/
g
2.9
ug/
g
Ref.
6,
Table
3
&
Appendix
F,
page
41,
52,
60
TP­
4
TP­
9
wood
waste
Acenapthylene
1,875
ug/
g
4.22
ug/
g
363
ug/
g
2.9
ug/
g
Ref.
6,
Table
3
&
Appendix
F,
page
49,
60
TP­
4
TP­
5
wood
waste
Anthracene
640
ug/
g
324
ug/
g
363
ug/
g
53
ug/
g
Ref.
6,
Table
3
&
Appendix
F,
page
49,
52
TP­
1
TP­
4
TP­
5
TP­
8
TP­
9
wood
waste
Benzene
2.10
645
5.62
0.337
0.675
ug/
g
0.070
ug/
g
3.1
ug/
g
0.6
ug/
g
0.009
ug/
g
0.008
ug/
g
Ref.
6,
Table
3
&
Appendix
F,
page
38,
50,
51,
57,
59
TP­
5
wood
waste
Benzo(
a)
anthrace
ne
204
ug/
g
53
ug/
g
Ref.
6,
Table
3
&
Appendix
F,
page
52
TP­
1
TP­
3
TP­
5
TP­
7
TP­
9
wood
waste
Benzo(
a)
pyrene
6.66
ug/
g
20.9
ug/
g
206
ug/
g
14.7
ug/
g
12.5
ug/
g
5.6
ug/
g
7.9
ug/
g
53
ug/
g
8.7
ug/
g
2.9
ug/
g
Ref.
6,
Table
3
&
Appendix
F,
page
41,
48,
52,
56,
60
TP­
3
TP­
5
TP­
7
TP­
9
wood
waste
Benzo(
b)
fluorant
hene
11.3
ug/
g
118
ug/
g
1O
ug/
g
11.2
ug/
g
7.9
ug/
g
53
ug/
g
8.7
ug/
g
2.9
ug/
g
Ref.
6,
Table
3
&
Appendix
F,
page
48,
52,
56,
60
TP­
5
wood
waste
Benzo(
k)
fluorant
hene
74
ug/
g
53
ug/
g
Ref.
6,
Table
3
&
Appendix
F,
page
52
TP­
3
TP­
5
TP­
7
TP­
9
wood
waste
Benzo(
g,
h,
i)
pery
lene
24.7
ug/
g
79.0
ug/
g
26.3
ug/
g
25.1
ug/
g
7.9
ug/
g
53
ug/
g
8.7
ug/
g
2.9
ug/
g
Ref.
6,
Table
3
&
Appendix
F,
page
48,
52,
56,
60
TP­
5
TP­
9
wood
waste
Chrysene
53
ug/
g
6.69
ug/
g
208
ug/
g
2.9
ug/
g
Ref.
6,
Table
3
&
Appendix
F,
page
52,
60
TP­
1
TP­
4
TP­
5
TP­
8
TP­
9
wood
waste
Ethylbenzene
0.469
2973
51.1
0.149
0.323
ug/
g
0.348
ug/
g
16
ug/
g
2.8
ug/
g
0.149
ug/
g
0.039
ug/
g
Ref.
6,
Table
3
&
Appendix
F,
page
41,
49,
52,
58,
60
TP­
4
TP­
5
wood
waste
Fluoranthene
605
ug/
g
366
ug/
g
363
ug/
g
53
ug/
g
Ref.
6,
Table
3
&
Appendix
F,
page
49,
52
Sample
ID
Sample
Type
Hazardous
Substance
Hazardous
Substance
Concentration
Detection
Limit
Reference
Source
Characterization
22
TP­
4
TP­
5
wood
waste
Fluorene
1,003
ug/
g
279
ug/
g
363
ug/
g
53
ug/
g
Ref.
6,
Table
3
&
Appendix
F,
page
49,
52
TP–
3
TP­
5
TP­
7
TP­
9
wood
waste
Indeno(
1,2,3­
cd)
pyrene
19.4
ug/
g
65.6
ug/
g
22
ug/
g
17.4
ug/
g
7.9
ug/
g
53
ug/
g
8.7
ug/
g
2.9
ug/
g
Ref.
6,
Table
3
&
Appendix
F,
page
48,
52,
56,
60
TP­
1
TP­
5
wood
waste
2­
Methylnaphthalen
e
6.4
ug/
g
706
ug/
g
5.6
ug/
g
53
ug/
g
Ref.
6,
Table
3
&
Appendix
F,
page
41
TP­
1
TP­
3
TP­
4
TP­
5
TP­
8
TP­
9
wood
waste
Naphthalene
10.2
29
28469
1,077
1.57
5.26
ug/
g
0.348
ug/
g
0.97
ug/
g
16
ug/
g
53
ug/
g
0.408
ug/
g
2.9
ug/
g
Ref.
6,
Table
3
&
Appendix
F,
page
41,
48,
49,
52,
58,
60
TP­
1
TP­
5
wood
waste
Phenanthrene
10.1
ug/
g
1,254
ug/
g
5.6
ug/
g
53
ug/
g
Ref.
6,
Table
3
&
Appendix
F,
page
41,
52
TP­
1
TP­
4
TP­
5
TP­
8
TP­
9
wood
waste
n­
Propylbenzene
0.850
101
4.89
0.053
0.056
ug/
g
0.348
ug/
g
16
ug/
g
2.8
ug/
g
0.042
ug/
g
0.039
ug/
g
Ref.
6,
Table
3
&
Appendix
F,
page
41,
49,
52,
58,
60
TP­
1
TP­
3
TP­
5
TP­
7
TP­
9
wood
waste
Pyrene
13.8
ug/
g
10.8
ug/
g
759
ug/
g
14.2
ug/
g
17.8
ug/
g
5.6
ug/
g
7.9
ug/
g
53
ug/
g
8.7
ug/
g
2.9
ug/
g
Ref.
6,
Table
3
&
Appendix
F,
page,
41,
48,
52,
56,
60
TP­
4
TP­
5
TP­
8
TP­
9
wood
waste
pIsopropyltoluene
95.1
21.3
0.238
0.104
ug/
g
16
ug/
g
2.8
ug/
g
0.042
ug/
g
0.039
ug/
g
Ref.
6,
Table
3
&
Appendix
F,
page
49,
52,
58,
60
TP­
1
TP­
4
TP­
5
TP­
8
TP­
9
wood
waste
n­
Butylbenzene
3.48
648
54.9
0.058
0.415
ug/
g
0.348
ug/
g
16
ug/
g
2.8
ug/
g
0.042
ug/
g
0.039
ug/
g
Ref.
6,
Table
3
&
Appendix
F,
page
38,
50,
51,
57,
59
TP­
4
TP­
5
TP­
9
wood
waste
Isopropylbenzene
190
6.20
0.056
ug/
g
16
ug/
g
2.8
ug/
g
0.039
ug/
g
Ref.
6,
Table
3
&
Appendix
F,
page
49,
52,
60
TP­
1
TP­
4
TP­
5
TP­
8
TP­
9
wood
waste
1,
2,
4­
Trimethylbenzene
1.81
2994
6.15
0.042
0.282
ug/
g
0.348
ug/
g
16
ug/
g
1.47
ug/
g
0.042
ug/
g
0.039
ug/
g
Ref.
6,
Table
3
&
Appendix
F,
page
41,
49,
52,
58,
60
TP­
1
TP­
4
TP­
5
TP­
8
TP­
9
wood
waste
1,
3,
5­
Trimethylbenzene
1.36
742,
17.4
0.112
0.154
ug/
g
0.348
ug/
g
16
ug/
g
2.77
ug/
g
0.042
ug/
g
0.039
ug/
g
Ref.
6,
Table
3
&
Appendix
F,
page
41,
49,
52,
58,
60
Sample
ID
Sample
Type
Hazardous
Substance
Hazardous
Substance
Concentration
Detection
Limit
Reference
Source
Characterization
23
TP­
1
TP­
4
TP­
5
TP­
8
TP­
9
wood
waste
Xylenes
2.75
4981
68.8
0.232
0.499
ug/
g
0.348
ug/
g
16
ug/
g
2.77
ug/
g
0.042
ug/
g
0.039
ug/
g
Ref.
6,
Table
3
&
Appendix
F,
page
41,
49,
52,
58,
60
TP­
4
wood
waste
sec­
Butylbenzene
2688
ug/
g
16
ug/
g
Ref.
6,
Table
3
&
Appendix
F,
page
50
TP­
4
wood
waste
Toluene
2007
ug/
g
31
ug/
g
Ref.
6,
Table
3
&
Appendix
F,
page
49
TP­
6
Clay
Fill
soil
Benzene
0.068
ug/
g
0.001
ug/
g
Ref.
6,
Table
3
&
Appendix
F,
page
54
TP­
7
Fill
soil/
Refuse
Benzene
1.01
ug/
g
0.005
ug/
g
Ref.
6,
Table
3
&
Appendix
F,
page
55
TP­
7
Fill
Soil/
Refuse
Naphthalene
1.23
ug/
g
0.024
ug/
g
Ref.
6,
Table
3
&
Appendix
F,
page
56
TP­
7
Fill
soil/
Refuse
Ethylbenzene
0.147
ug/
g
0.024
ug/
g
Ref.
6,
Table
3
&
Appendix
F,
page
56
TP­
7
Fill
soil/
Refuse
n­
Butylbenzene
0.140
ug/
g
0.024
ug/
g
Ref.
6,
Table
3
&
Appendix
F,
page
55
TP­
7
Fill
soil/
Refuse
Isopropylbenzene
0.029
ug/
g
0.024
ug/
g
Ref.
6,
Table
3
&
Appendix
F,
page
56
TP­
7
Fill
soil/
Refuse
1,
2,
4­
Trimethylbenzene
0.187
ug/
g
0.024
ug/
g
Ref.
6,
Table
3
&
Appendix
F,
page
56
TP­
7
Fill
soil/
Refuse
1,
3,
5,
Trimethylbenzene
0.068
ug/
g
0.024
ug/
g
Ref.
6,
Table
3
&
Appendix
F,
page
56
TP­
7
Fill
soil/
Refuse
Xylenes
0.375
ug/
g
0.024
ug/
g
Ref.
6,
Table
3
&
Appendix
F,
page
56
2.2.3
HAZARDOUS
SUBSTANCES
AVAILABLE
TO
A
PATHWAY
Release
via
overland
migration
and/
or
flood:

Surface
water
from
this
source
flows
either
to
the
City
of
Ashland
storm
sewer
system
or
discharges
to
Chequamegon
Bay.
There
is
no
indication
of
a
maintained
engineered
cover
nor
a
functioning
and
maintained
run­
on
control
system
and
runoff
management.
For
this
reason
a
containment
factor
value
of
10
is
assigned
to
Source
2
(Ref.
6
page
3
and
Figure
2;
Ref.
8,
page
1;
HRS
Table
4­
2).

2.2.4
HAZARDOUS
WASTE
QUANTITY
2.4.2.1.1.
Hazardous
Constituent
Quantity
Source
Characterization
24
Description
Insufficient
information
is
available
to
determine
the
hazardous
constituent
quantity.

Sum
(pounds):

Hazardous
Constituent
Quantity
Assigned
Value:
NS
2.4.2.1.2.
Hazardous
Wastestream
Quantity
Description
Insufficient
information
is
available
to
determine
the
hazardous
wastestream.

Sum
(pounds):
Sum
of
Wastestream
Quantity/
5,000
(Table
2­
5):
Hazardous
Wastestream
Quantity
Assigned
Value:
NS
2.4.2.1.3.
Volume
Description
Insufficient
information
is
available
to
determine
the
volume.

Sum
(yd
3
/gal):
Equation
for
Assigning
Value
(Table
2­
5):
Volume
Assigned
Value:
NS
2.4.2.1.4.
Area
Description
The
extent
of
the
fill
area
has
not
been
determined.
Available
information
documents
Source
2
as
approximately
10
acres
and
consisting
of
the
area
from
Prentice
Avenue
to
the
east,
Ellis
Avenue
to
the
west,
Chequamegon
Bay
to
the
north
and
the
Wisconsin
Central
Railroad
to
the
south.
Because
this
information
does
not
delineate
the
extent
of
the
filled
area,
the
area
of
this
source
is
determined
to
be
a
value
greater
than
zero
(Ref
6,
pages
2,
3,
16).

Source
Type
Units
(ft
2
)
References
Landfill
>
0
(unknown
but
greater
than
zero)
Ref.
6,
pages
2,
3
Sum
(ft
2
):
>0
Equation
for
Assigning
Value
(HRS
Table
2­
5):
Area
÷
3,400
=
Area
Assigned
Value:
Unknown
>
0
2.4.2.1.5.
Source
Hazardous
Waste
Quantity
Value
Highest
assigned
value
assigned
from
Table
2­
5:
Unknown
>
0
Source
Characterization
25
Insert
Figure
3:
Source
2
here.
Source
Characterization
26
SUMMARY
OF
SOURCE
DESCRIPTIONS
Source
No.
Source
Hazardous
Waste
Quantity
Value
Source
Hazardous
Constituen
t
Quantity
Complete?
(Y/
N)
Containment
Factor
Value
by
Pathway
Ground
Water
(GW)
(Table
3­
2)
Surface
Water
(SW)
Air
Overland/
flood
(Table
4­
2)
GW
to
SW
(Tabl
e
3­
2)
Gas
(Tabl
e
6­
3)
Particulate
(Table
6­
9)

1
11.76
N
NS
10
NS
NS
NS
2
>
0
N
NS
10
NS
NS
NS
NS
Not
scored
According
to
HRS
Section
2.4.2.2,
if
any
target
is
subject
to
Level
II
concentrations,
assign
either
the
value
from
Table
2­
6
or
a
value
of
100,
whichever
is
greater,
as
the
hazardous
waste
quantity
factor
value
for
that
pathway.
Because
level
II
concentrations
are
documented
in
Chequamegon
Bay,
a
fishery
and
a
the
habitat
for
a
state
designated
endangered
species,
a
surface
water
pathway
hazardous
waste
quantity
factor
value
of
100
is
assigned
(HRS
Section
2.4.2.2;
Table
4­
23;
Ref.
19
and
Ref.
25;
HRS
documentation
record
Sections
4.1.2.1.1,
4.1.3.3,
and
4.1.4.3).
SW­
Likelihood
of
Release
27
4.0
SURFACE
WATER
MIGRATION
PATHWAY
4.1
OVERLAND/
FLOOD
MIGRATION
COMPONENT
4.1.1.1
Definition
of
Hazardous
Substance
Migration
Path
for
Overland/
flood
Component
Overland
runoff
from
the
Ashland
Lakefront
Property/
Kreher
Park
(Source
2)
flows
directly
into
Chequamegon
Bay,
which
is
adjacent
and
north
of
this
source
(Ref.
6,
page
3;
Ref.
8,
pages
1,
8).
Topography
of
the
NSP
property,
the
location
of
the
former
ravine
area
(Source
1),
slopes
to
the
north
with
a
steep
downward
slope
at
the
north
property
boundary
that
overlooks
the
Wisconsin
Central
Limited
Railroad
and
Kreher
Park
(Ref.
5,
pages
1,
7;
Ref.
8,
page
7).
Runoff
from
the
former
ravine
filled
with
waste
from
the
NSP
flows
to
Chequamegon
Bay
across
Source
1.
A
seep
at
the
mouth
of
the
former
ravine
is
located
where
the
ravine
originally
discharged
to
Chequamegon
Bay
before
the
filling
in
of
the
ravine
and
the
Ashland
Lakefront.
(Ref.
5,
pages
ES­
1,
2,
Figure
4­
1;
Ref.
8,
pages
1,
3,
5,
7,
8).
Runoff
from
the
former
ravine
area
also
flows
to
the
City
of
Ashland
sewer,
which
discharges
into
Chequamegon
Bay
(Ref.
5,
page
1;
Ref.
8,
page
5;
Ref.
24,
pages
2,
3).
The
probable
point
of
entry
(PPE)
from
both
sources
is
along
the
Ashland
Lakefront
Property/
Kreher
Park
directly
into
Chequamegon
Bay
(Ref.
3;
Ref.
5,
page
ES­
1;
Ref.
8,
page
8).
Chequamegon
Bay
extends
into
Lake
Superior;
the
target
distance
limit
for
the
surface
water
pathway
extends
15
miles
into
Lake
Superior
(Ref.
3;
Ref.
8,
pages
1
through
5,
8,
9,
15,
16;
Ref.
18).

4.1.2.1
Likelihood
of
Release
4.1.2.1.1
Observed
Release
Chemical
Analysis
In
February
2000
the
Wisconsin
Department
of
Natural
Resources
collected
sediment
samples
to
document
an
observed
release
to
Chequamegon
Bay
(Ref.
10,
pages
1,
3,
7;
Ref.
11,
page
152;
Ref
27,
pages
3
to
9).
Sample
AS­
1
is
designated
as
a
background
sample.
Samples
AS­
2,
AS­
3,
AS­
4,
and
AS­
7
document
a
release
of
hazardous
substances
in
Chequamegon
Bay
(Ref.
10,
page
4).
Background
sample
AS­
1
was
collected
at
a
depth
of
1.4
feet
in
Ellis
Avenue
Marina
just
west
of
the
contaminated
sediments
in
Chequamegon
Bay
(Ref.
4,
page
4).
This
sample
location
was
considered
a
suitable
background
location,
representative
of
the
contamination
in
Chequamegon
Bay,
because
the
location
of
the
sample
is
also
in
a
man­
made
portion
of
Chequamegon
Bay
as
are
the
release
sample
locations.
The
substances
found
in
the
release
samples
are
man­
made
hazardous
substances
and
the
background
sample
showed
that
the
contamination
in
Chequamegon
Bay
is
nonubiquitous
(Ref.
11,
page
76;
Ref.
15,
pages
2,
3).

For
the
samples
used
to
document
an
observed
release
in
this
HRS
evaluation
of
the
Ashland/
Northern
States
Power
Lakefront
site,
the
"standard"
detection
limits
for
the
compounds
analyzed
are
provided
by
the
Wisconsin
Department
of
Natural
Resources.
If
the
laboratory
diluted
any
sample,
the
detection
limits
will
increase
accordingly
(Ref.
15,
page
78;
Ref.
28,
pages
1,
2,
3).
The
observed
release
samples
used
to
score
this
site
have
been
reviewed
by
the
Wisconsin
Department
of
Natural
Resources
which
substantiate
that
the
analytical
data
meet
the
State's
QA/
QC
requirements
and
the
data
confirm
contamination
in
Chequamegon
Bay
(Ref.
29,
pages
2,
3).

Background
Concentrations:

Sample
ID:
AS­
1
Sample
Medium:
Silty
sand
Sample
Location:
Ellis
Avenue
Marina,
West
of
Chequamegon
Bay;
Ashland,
Wisconsin
SW­
Likelihood
of
Release
28
Depth
1.4
feet
Date
2/
8/
2000
Reference:
10,
pages
1,
4,
7
Detection
Hazardous
Substance
Concentration
Limit
Reference
Acenaphthene
ND
0.40
ug/
g
Ref.
11,
pg.
76,
78;
Ref.
28,
pg.
3
Acenaphthylene
ND
0.67
ug/
g
Ref.
11,
pg.
76,
78;
Ref.
28,
pg.
3
Anthracene
ND
0.46
ug/
g
Ref.
11,
pg.
76,
78;
Ref.
28,
pg.
3
Benzo(
a)
anthracene
ND
0.49
ug/
g
Ref.
11,
pg.
76,
78;
Ref.
28,
pg.
3
Benzo(
a)
pyrene
ND
0.32
ug/
g
Ref.
11,
pg.
76,
78;
Ref.
28,
pg.
3
Benzo(
b)
fluoranthene
ND
0.67
ug/
g
Ref.
11,
pg.
76,
78;
Ref.
28,
pg.
3
Benzo
(g,
h,
i)
perylene
ND
0.67
ug/
g
Ref.
11,
pg.
76,
78;
Ref.
28,
pg.
3
Chrysene
ND
0.48
ug/
g
Ref.
11,
pg.
76,
78;
Ref.
28,
pg.
3
Dibenzo(
a,
h)
anthracene
ND
0.67
ug/
g
Ref.
11,
pg.
76,
78;
Ref.
28,
pg.
3
Fluoranthene
ND
0.67
ug/
g
Ref.
11,
pg.
76,
78;
Ref.
28,
pg.
3
Fluorene
ND
0.58
ug/
g
Ref.
11,
pg.
76,
78;
Ref.
28,
pg.
3
Indeno(
1,2,3
­cd)
pyrene
ND
0.67
ug/
g
Ref.
11,
pg.
76,
78;
Ref.
28,
pg.
3
Naphthalene
ND
0.33
ug/
g
Ref.
11,
pg.
76,
78;
Ref.
28,
pg.
3
Phenanthrene
ND
0.67
ug/
g
Ref.
11,
pg.
76,
78;
Ref.
28,
pg.
3
Pyrene
ND
0.67
ug/
g
Ref.
11,
pg.
76,
78;
Ref.
28,
pg.
3
2,6­
Dimethylnaphthalene
ND
0.67
ug/
g
Ref.
11,
pg.
76,
78;
Ref.
28,
pg.
3
2­
Ethylnaphthalene
ND
0.67
ug/
g
Ref.
11,
pg.
76,
78;
Ref.
28,
pg.
3
1­
Methylnaphthalene
ND
0.67
ug/
g
Ref.
11,
pg.
76,
78;
Ref.
28,
pg.
3
2­
Methylnaphthalene
ND
0.67
ug/
g
Ref.
11,
pg.
76,
78;
Ref.
28,
pg.
3
1­
Methylphenanthrene
ND
0.67
ug/
g
Ref.
11,
pg.
76,
78;
Ref.
28,
pg.
3
Ethylbenzene
ND
0.026
ug/
g
Ref.
15,
pg.
3,
4,
7,
8;
Ref.
28,
pg.
2
n­
Hexane
ND
0.064
ug/
g
Ref.
15,
pg.
3,
4,
7,
8;
Ref.
28,
pg.
2
Isopropylbenzene
ND
0.019
ug/
g
Ref.
15,
pg.
3,
4,
7,
8;
Ref.
28,
pg.
2
p­
Isopropyltoluene
ND
0.019
ug/
g
Ref.
15,
pg.
3,
4,
7,
8;
Ref.
28,
pg.
2
1,2,4­
Trimethylbenzene
ND
0.019
ug/
g
Ref.
15,
pg.
3,
4,
7,
8;
Ref.
28,
pg.
2
1,3,5­
Trimethylbenzene
ND
0.019
ug/
g
Ref.
15,
pg.
3,
4,
7,
8;
Ref.
28,
pg.
2
m/
p­
Xylene
ND
0.045
ug/
g
Ref.
15,
pg.
3,
4,
7,
8;
Ref.
28,
pg.
2
Notes:

ND
Non
detect
ug/
g
micro
gram
per
gram
SW­
Likelihood
of
Release
29
­
Contaminated
Samples:

Sample
ID:
AS­
2
Sample
Medium:
Wood
waste/
sand
Sample
Location:
Chequamegon
Bay
Distance
from
PPE:
168.75
feet
Depth
2.8
feet
Date
2/
08/
2000
Reference:
10,
pages
1,
4,
7
Detection
Hazardous
Substance
Concentration
Limit
Reference
Acenaphthene
60
ug/
g
4.0
ug/
g
Ref.
11,
pg.
7,
9;
Ref.
28,
pg.
3
Anthracene
22
ug/
g
4.6
ug/
g
Ref.
11,
pg.
7,
9;
Ref.
28,
pg.
3
Benzo(
a)
anthracene
11
ug/
g
4.9
ug/
g
Ref.
11,
pg.
7,
9;
Ref.
28,
pg.
3
Benzo(
a)
pyrene
8.8
ug/
g
3.2
ug/
g
Ref.
11,
pg.
7,
9;
Ref.
28,
pg.
3
Chrysene
12
ug/
g
4.8
ug/
g
Ref.
11,
pg.
7,
9;
Ref.
28,
pg.
3
Fluoranthene
23
ug/
g
6.7
ug/
g
Ref.
11,
pg.
7,
9;
Ref.
28,
pg.
3
Fluorene
23
ug/
g
5.8
ug/
g
Ref.
11,
pg.
7,
9;
Ref.
28,
pg.
3
Naphthalene
150
ug/
g
13.2
ug/
g
Ref.
11,
pg.
7,
22;
Ref.
28,
pg.
3
Phenanthrene
75
ug/
g
6.7
ug/
g
Ref.
11,
pg.
7,
9;
Ref.
28,
pg.
3
Pyrene
36
ug/
g
6.7
ug/
g
Ref.
11,
pg.
7,
9;
Ref.
28,
pg.
3
2,6­
Dimethylnaphthalene
29
ug/
g
6.7
ug/
g
Ref.
11,
pg.
7,
9;
Ref.
28,
pg.
3
2­
Ethylnaphthalene
34
ug/
g
6.7
ug/
g
Ref.
11,
pg.
7,
9;
Ref.
28,
pg.
3
1­
Methylnaphthalene
70
ug/
g
26.8
ug/
g
Ref.
11,
pg.
7,
22;
Ref.
28,
pg.
3
2­
Methylnaphthalene
110
ug/
g
26.8
ug/
g
Ref.
11,
pg.
7,
22;
Ref.
28,
pg.
3
Ethylbenzene
6.1
ug/
g
0.26
ug/
g
Ref.
15,
pg.
20,
25,
26;
Ref.
28,
pg.
2
N­
Hexane
4.0
ug/
g
0.65
ug/
g
Ref.
15,
pg.
20,
25,
26;
Ref.
28,
pg.
2
Isopropylbenzene
0.55
ug/
g
0.19
ug/
g
Ref.
15,
pg.
20,
25,
26;
Ref.
28,
pg.
2
p­
Isopropyltoluene
0.68
ug/
g
0.19
ug/
g
Ref.
15,
pg.
20,
25,
26;
Ref.
28,
pg.
2
1,2,4­
Trimethylbenzene
2.9
ug/
g
0.19
ug/
g
Ref.
15,
pg.
20,
25,
26;
Ref.
28,
pg.
2
1,3,5­
Trimethylbenzene
0.78
ug/
g
0.19
ug/
g
Ref.
15,
pg.
20,
25
26;
Ref.
28,
pg.
2
m/
p­
Xylene
3.3
ug/
g
0.45
ug/
g
Ref.
15,
pg.
20,
25,
26;
Ref.
28,
pg.
2
Notes:

ND
Non
detect
ug/
g
micro
gram
per
gram
Sample
ID:
AS­
3
Sample
Medium:
Silty
sand
Sample
Location:
Chequamegon
Bay
Distance
from
PPE:
168.75
feet
Depth:
1.7
feet
Date:
2/
8/
2000
Reference:
10,
pages
1,
4,
7
Detection
Hazardous
Substance
Concentration
Limit
Reference
Acenaphthene
57
ug/
g
4.0
ug/
g
Ref.
11,
pg.
27,
29;
Ref.
28,
pg.
3
Anthracene
21
ug/
g
4.6
ug/
g
Ref.
11,
pg.
27,
29;
Ref.
28,
pg.
3
Benzo(
a)
anthracene
11
ug/
g
4.9
ug/
g
Ref.
11,
pg.
27,
29;
Ref.
28,
pg.
3
Benzo(
a)
pyrene
7.2
ug/
g
3.2
ug/
g
Ref.
11,
pg.
27,
29;
Ref.
28,
pg.
3
Chrysene
11
ug/
g
4.8
ug/
g
Ref.
11,
pg.
27,
29;
Ref.
28,
pg.
3
Fluoranthene
20
ug/
g
6.7
ug/
g
Ref.
11,
pg.
27,
29;
Ref.
28,
pg.
3
Fluorene
29
ug/
g
5.8
ug/
g
Ref.
11,
pg.
27,
29;
Ref.
28,
pg.
3
Naphthalene
120
ug/
g
13.2
ug/
g
Ref.
11,
pg.
27,
42;
Ref.
28,
pg.
3
Phenanthrene
63
ug/
g
6.7
ug/
g
Ref.
11,
pg.
27,
29;
Ref.
28,
pg.
3
Pyrene
25
ug/
g
6.7
ug/
g
Ref.
11,
pg.
27,
29;
Ref.
28,
pg.
3
2,6­
Dimethylnaphthalene
24
ug/
g
6.7
ug/
g
Ref.
11,
pg.
27,
29;
Ref.
28,
pg.
3
2­
Ethylnaphthalene
39
ug/
g
6.7
ug/
g
Ref.
11,
pg.
27,
29;
Ref.
28,
pg.
3
1­
Methylnaphthalene
95
ug/
g
26.8
ug/
g
Ref.
11,
pg.
27,
42;
Ref.
28,
pg.
3
2­
Methylnaphthalene
120
ug/
g
26.8
ug/
g
Ref.
11,
pg.
27,
42;
Ref.
28,
pg.
3
1­
Methylphenanthrene
8.3
ug/
g
6.7
ug/
g
Ref.
11,
pg.
27,
29;
Ref.
28,
pg.
3
Ethylbenzene
97
ug/
g
1.3
ug/
g
Ref.
15,
pg.
72,
78,
79;
Ref.
28,
pg.
2
SW­
Likelihood
of
Release
30
Isopropylbenzene
7.9
ug/
g
0.99
ug/
g
Ref.
15,
pg.
72,
78,
79;
Ref.
28,
pg.
2
p­
Isopropyltoluene
5.5
ug/
g
0.99
ug/
g
Ref.
15,
pg.
72,
78,
79;
Ref.
28,
pg.
2
1,2,4­
Trimethylbenzene
34
ug/
g
0.99
ug/
g
Ref.
15,
pg.
72,
78,
79;
Ref.
28,
pg.
2
1,3,5­
Trimethylbenzene
8.7
ug/
g
0.99
ug/
g
Ref.
15,
pg.
72,
78,
79;
Ref.
28,
pg.
2
m/
p­
Xylene
57
ug/
g
2.3
ug/
g
Ref.
15,
pg.
72,
78,
79;
Ref.
28,
pg.
2
Notes:

ND
Non
detect
ug/
g
micro
gram
per
gram
Sample
ID:
AS­
4
Sample
Medium:
Wood/
silty
sand
Sample
Location:
Chequamegon
Bay
Distance
from
PPE:
37.5
feet
Depth:
2.7
feet
Date:
2/
8/
2000
Reference:
10,
pages
1,
4,
7
Detection
Hazardous
Substance
Concentration
Limit
Reference
Acenaphthene
36
ug/
g
4.0
ug/
g
Ref.
11,
pg.
47,
49;
Ref.
28,
pg.
3
Anthracene
15
ug/
g
4.6
ug/
g
Ref.
11,
pg.
47,
49;
Ref.
28,
pg.
3
Benzo(
a)
anthracene
8.8
ug/
g
4.9
ug/
g
Ref.
11,
pg.
47,
49;
Ref.
28,
pg.
3
Benzo(
a)
pyrene
6.6
ug/
g
3.2
ug/
g
Ref.
11,
pg.
47,
49;
Ref.
28,
pg.
3
Chrysene
9.2
ug/
g
4.8
ug/
g
Ref.
11,
pg.
47,
49;
Ref.
28,
pg.
3
Fluoranthene
16
ug/
g
6.7
ug/
g
Ref.
11,
pg.
47,
49;
Ref.
28,
pg.
3
Fluorene
19
ug/
g
5.8
ug/
g
Ref.
11,
pg.
47,
49;
Ref.
28,
pg.
3
Naphthalene
66
ug/
g
3.3
ug/
g
Ref.
11,
pg.
47,
49;
Ref.
28,
pg.
3
Phenanthrene
48
ug/
g
6.7
ug/
g
Ref.
11,
pg.
47,
49;
Ref.
28,
pg.
3
Pyrene
22
ug/
g
6.7
ug/
g
Ref.
11,
pg.
47,
49;
Ref.
28,
pg.
3
2,6­
Dimethylnaphthalene
19
ug/
g
6.7
ug/
g
Ref.
11,
pg.
47,
49;
Ref.
28,
pg.
3
2­
Ethylnaphthalene
23
ug/
g
6.7
ug/
g
Ref.
11,
pg.
47,
49;
Ref.
28,
pg.
3
1­
Methylnaphthalene
60
ug/
g
6.7
ug/
g
Ref.
11,
pg.
47,
49;
Ref.
28,
pg.
3
2­
Methylnaphthalene
67
ug/
g
6.7
ug/
g
Ref.
11,
pg.
47,
49;
Ref.
28,
pg.
3
Ethylbenzene
9.8
ug/
g
0.28
ug/
g
Ref.
15,
pg.
128,
134,
135;
Ref,
28,
pg.
2
Isopropylbenzene
1.5
ug/
g
0.21
ug/
g
Ref.
15,
pg.
128,
134,
135;
Ref,
28,
pg.
2
p­
Isopropyltoluene
1.8
ug/
g
0.21
ug/
g
Ref.
15,
pg.
128,
134,
135;
Ref,
28,
pg.
2
1,2,4­
Trimethylbenzene
7.6
ug/
g
0.21
ug/
g
Ref.
15,
pg.
128,
134,
135;
Ref,
28,
pg.
2
1,3,5­
Trimethylbenzene
2.1
ug/
g
0.21
ug/
g
Ref.
15,
pg.
128,
134,
135;
Ref,
28,
pg.
2
m/
p­
Xylene
7.4
ug/
g
0.48
ug/
g
Ref.
15,
pg.
128,
134,
135;
Ref,
28,
pg.
2
Notes:

ND
Non
detect
ug/
g
micro
gram
per
gram
Sample
ID:
AS­
7
Sample
Medium:
Wood
waste/
sand
Sample
Location:
Chequamegon
Bay
Distance
from
PPE:
225
feet
Depth:
1.7
feet
Date:
2/
8/
2000
Reference:
10,
pages
1,
4,
7
Detection
Hazardous
Substance
Concentration
Limit
Reference
Acenaphthene
9.5
ug/
g
1.6
ug/
g
Ref.
11,
pg.
81,
83;
Ref.
28,
pg.
3
SW­
Likelihood
of
Release
31
Anthracene
4.2
ug/
g
1.8
ug/
g
Ref.
11,
pg.
81,
83;
Ref.
28,
pg.
3
Benzo(
a)
anthracene
2.0
ug/
g
2.0
ug/
g
Ref.
11,
pg.
81,
83;
Ref.
28,
pg.
3
Benzo(
a)
pyrene
1.3
ug/
g
1.3
ug/
g
Ref.
11,
pg.
81,
83;
Ref.
28,
pg.
3
Chrysene
2.0
ug/
g
1.9
ug/
g
Ref.
11,
pg.
81,
83;
Ref.
28,
pg.
3
Fluoranthene
4.1
ug/
g
2.7
ug/
g
Ref.
11,
pg.
81,
83;
Ref.
28,
pg.
3
Fluorene
5.2
ug/
g
2.3
ug/
g
Ref.
11,
pg.
81,
83;
Ref.
28,
pg.
3
Naphthalene
11
ug/
g
1.3
ug/
g
Ref.
11,
pg.
81,
83;
Ref.
28,
pg.
3
Phenanthrene
12
ug/
g
2.7
ug/
g
Ref.
11,
pg.
81,
83;
Ref.
28,
pg.
3
Pyrene
5.4
ug/
g
2.7
ug/
g
Ref.
11,
pg.
81,
83;
Ref.
28,
pg.
3
2,6­
Dimethylnaphthalene
4.7
ug/
g
2.7
ug/
g
Ref.
11,
pg.
81,
83;
Ref.
28,
pg.
3
2­
Ethylnaphthalene
5.0
ug/
g
2.7
ug/
g
Ref.
11,
pg.
81,
83;
Ref.
28,
pg.
3
1­
Methylnaphthalene
10
ug/
g
2.7
ug/
g
Ref.
11,
pg.
81,
83;
Ref.
28,
pg.
3
2­
Methylnaphthalene
13
ug/
g
2.7
ug/
g
Ref.
11,
pg.
81,
83;
Ref.
28,
pg.
3
Ethylbenzene
4.2
ug/
g
0.025
ug/
g
Ref.
15,
pg.
203,
208,
209;
Ref.
28,
pg.
2
Isopropylbenzene
0.49
ug/
g
0.019
ug/
g
Ref.
15,
pg.
203,
208,
209;
Ref.
28,
pg.
2
p­
Isopropyltoluene
0.36
ug/
g
0.019
ug/
g
Ref.
15,
pg.
203,
208,
209;
Ref.
28,
pg.
2
1,2,4­
Trimethylbenzene
2.0
ug/
g
0.019
ug/
g
Ref.
15,
pg.
203,
208,
209;
Ref.
28,
pg.
2
1,3,5­
Trimethylbenzene
0.56
ug/
g
0.019
ug/
g
Ref.
15,
pg.
203,
208,
209;
Ref.
28,
pg.
2
m/
p­
Xylene
2.8
ug/
g
0.043
ug/
g
Ref.
15,
pg.
203,
208,
209;
Ref.
28,
pg.
2
Notes:
ND
Non
detect
ug/
g
micro
gram
per
gram
SW­
Likelihood
of
Release
32
Attribution
The
Ashland
Lakefront
on
Chequamegon
Bay
has
been
the
location
of
industrial
activities
over
the
past
century
and
a
half
and
currently
consists
of
Kreher
Park,
a
recreational
park
owned
by
the
City
of
Ashland
(Ref.
5,
page
ES­
1;
Ref.
6,
pages,
2,
4).
The
city­
owned
parcels
of
the
lakefront
were
created
anthropogenically
in
the
late
1800s
and
early
1900s
by
the
placement
of
fill
materials
into
Chequamegon
Bay
(Ref.
6,
page
4).
Fill
material
identified
todate
includes
wood
wastes,
clay,
silt,
peat,
sand,
soil,
sawdust,
and
slab
wood
(Ref
6,
page
4).
In
the
western
portion
of
the
Ashland
Lakefront,
the
City
operated
this
area
as
a
waste
disposal
facility.
Uncontrolled
filling
of
the
rest
of
this
area
occurred
during
and
after
the
operation
of
the
sawmills
(Ref.
17,
page
2­
4).
A
series
of
sawmills
operated
on
the
Ashland
Lakefront
from
the
early
1880's
through
1931
(Ref.
8,
pages
3,
5;
Ref.
17,
pages
2­
3,
2­
4).
Eyewitness
accounts
indicate
that
open
tar
creosote
pits
may
have
been
located
south
of
the
present
waste
water
treatment
plant
and
were
used
to
treat
lumber
on
the
property
(Ref.
5,
page
1;
Ref.
6,
page
7,
9;
Ref.
23,
pages
1,
2).
Historic
Sanborn
fire
insurance
maps
do
not
indicate
any
wood
treatment
structure
at
the
property
(Ref.
8,
pages
3,
5,
15).
Drainage
from
the
Ashland
Lakefront/
Kreher
Park
flows
to
Chequamegon
Bay
(Ref.
6
page
3
and
Figure
2;
Ref.
8,
page
1).

Just
south
of
the
Ashland
Lakefront/
Kreher
Park
is
the
Northern
States
Power
(NSP)
facility,
which
was
the
location
of
a
manufactured
gas
plant
(MGP)
(Ref.
5,
Figure
1­
2;
Ref.
6,
pages
3,
16,
Figure
2).
During
the
operation
of
the
MGP,
residual
coal
tar
and
oils
were
produced
as
a
by­
product
from
the
manufacture
of
coal
gas
and
water
gas
(Ref.
5,
page
ES­
1,
1).
These
wastes
included
coal
tars
and
oils.
Prior
to
1939,
no
records
of
tar
sale
are
available.
From
1939
to
1947,
some
tar
was
collected
for
sale
(Ref.
5,
page
1;
Ref.
22,
pages
1,
3
to
5,
7,
9
to
11,
13,
15
to
17,
19,
21
to
23,
25,
27
to
29,
31,
33
to
35,
37,
39
to
43,
46
to
51,
53,
56,
59
to
61,
63,
66,
68
to
70,
72,
76
to
78,
80,
83,
85
to
87,
89,
92
to
95,
97,
103
to
106,
108,
111,
113
to
115,
117,
118,
120,
121,
123,
124,
126,
127).
Information
on
the
disposition
of
the
residual
coal
tar
that
was
not
sold
is
unavailable
(Ref.
5,
page
2).
On­
site
fill
soils
contaminated
with
coal
tar
have
been
found
with
free
product
DNAPL
coal
tar
at
the
base
of
a
former
ravine
that
extends
north­
south
across
the
NSP
facility,
indicating
that
some
of
the
coal
tar
was
disposed
on
site
(Ref.
5,
page
2).
Historic
drawings
of
record
note
a
pipe
running
from
the
MGP
north
with
a
caption,
2"
to
abandoned
tar
dump
(Ref.
5,
pages
1,
2;
Ref.
8,
pages
2
through
5,
15,
16;
Ref.
23).
These
drawings
also
depict
a
feature
noted
as
a
"waste
tar
dump"
located
between
the
seep
area
and
the
waste
water
treatment
plant
(Ref.
8,
pages
2
through
8,
15,
16).
Eyewitness
accounts
indicate
that
a
pipe
for
the
transportation
of
tar
ran
from
the
MGP
to
the
southern
portion
of
Kreher
Park
in
the
general
location
of
the
seep
(Ref.
23,
pages
1,
2).

On
the
NSP
property,
a
ravine
extended
from
south
to
north,
emptying
out
at
the
natural
shoreline
to
the
north
near
the
railroad
tracks
and
the
seep
area.
This
ravine
was
open
at
the
start­
up
of
gas
production
and
was
filled
by
the
early
1900s
(Ref.
5,
page
ES­
1,
1,
2,
Figures
1­
3,
1­
4,
and
4­
1).
On­
site
fill
soils
contaminated
with
coal
tar
have
been
found
in
the
former
ravine
(Ref.
5,
page
2).
The
fill
material
in
the
ravine
also
includes
cinders
ash,
boiler
slag,
demolition
debris,
and
soil
(Ref.
5,
pages
15,
21,
22,
58).
Hazardous
substances
identified
from
samples
collected
from
the
former
ravine
include,
but
are
not
limited
to,
Acenaphthylene,
Anthracene,
Benzo(
a)
anthracene,
Benzo(
a)
pyrene,
Benzo(
b)­
fluoranthene,
Benzo
(g,
h,
i)
perylene,
Benzo(
k)
fluoranthene,
Chrysene,
Fluoranthene,
Fluorene,
Indeno(
1,2,3
­cd)
pyrene,
Naphthalene,
Phenanthrene,
2,6­
Dimethylnaphthalene,
2­
Ethylnaphthalene,
1­
Methylnaphthalene,
2­
Methylnaphthalene,
1­
Methylphenanthrene,
Pyrene,
Phenanthrene,
Toluene,
and
Xylenes
(Ref.
5,
Tables
4­
1
through
4­
3).

The
former
ravine
drains
to
the
north
and
onto
the
Ashland
Lakefront/
Kreher
Park
beyond
which
is
Chequamegon
Bay
(Ref.
5,
page
1,
7,
8;
Ref
14,
page
1).
Ground
water
in
the
vicinity
of
the
former
ravine
moves
from
south
to
north,
towards
the
mouth
of
the
former
ravine
(Ref.
5
pages
8,
18,
23,
Figures
4­
8,
4­
9).
Just
north
of
the
ravine
along
the
natural
shoreline
is
a
seep
where
water,
oils,
and
tar
flow
to
the
land
surface
(Ref.
8,
pages
7,
8).
This
seep
is
just
north
of
SW­
Likelihood
of
Release
33
the
mouth
of
the
former
ravine
and
is
adjacent
to
a
bluff
that
transects
the
Ashland
Lakefront
Property
and
the
NSP
facility
(Ref.
5,
page
ES­
1,
2,
Figure
1­
2;
Ref
6,
page
3;
Ref.
8,
pages
7,
8,).
This
bluff
runs
east
to
west
and
is
along
the
pre­
fill
natural
shoreline
of
Chequamegon
Bay
(Ref.
5,
page
ES­
1,
2;
Ref
6,
page
3;
Ref.
8
page
14).
Ground
water
in
the
vicinity
of
the
ravine
is
contaminated
with
PAHs,
VOCs,
and
NDAPL,
oil,
and
tar
(Ref.
5,
page
13;
Ref.
14
page
8).
Contamination
in
soil
and
ground
water
in
both
the
Ashland
Lakefront/
Kreher
Park
and
the
former
ravine
indicates
that
the
former
ravine
may
be
a
conduit
for
contamination
onto
the
Ashland
Lakefront/
Kreher
Park
(Ref.
5,
pages
ES­
1,
18,
22,23,
Figures
1­
3,
4­
1;
Ref.
6,
pages
10,
13,
14,
18;
Ref.
17,
page
3­
3).

Sediment
contamination
in
Chequamegon
Bay
is
attributed
to
the
coal
tar
from
the
manufactured
gas
plant
that
operated
on
the
NSP
property.
The
possible
sources
attributing
to
contamination
in
Chequamegon
Bay
are
limited
to
the
former
ravine
and
Ashland
Lakefront/
Kreher
Park
(Ref.
12
pages
iv,
2,
4,11,
12
Table
1;
Ref.
16,
pages
1,
2).
The
vicinity
of
the
Ashland/
Northern
States
Power
lakefront
site
is
largely
residential
with
commercial
businesses.
No
other
facility
generating
coal
tar
are
in
the
vicinity
of
the
site.
Visible
contamination
as
well
as
analytical
samples
have
confirmed
the
presence
of
and
releases
into
the
environment
of
hazardous
substances
associated
with
the
former
manufactured
gas
plant
(Ref.
3;
Ref.
12,
pages
iv,
2,
4,
11,
12,
Table
1;
Ref.
8,
pages
1
to
16;
Ref.
16,
pages
1,
2;
Ref.
16,
page
3).

Hazardous
Substances
Released
Acenaphthene
Anthracene
Benzo(
a)
anthracene
Benzo(
a)
pyrene
Chrysene
Ethylbenzene
Fluoranthene
Fluorene
SW­
Likelihood
of
Release
34
n­
Hexane
p­
Isopropyltoluene
Isopropylbenzene
Naphthalene
Phenanthrene
Pyrene
2,6­
Dimethylnaphthalene
2­
Ethylnaphthalene
1­
Methylnaphthalene
2­
Methylnaphthalene
1­
Methylphenanthrene
1,2,4­
Trimethylbenzene
1,3,5­
Trimethylbenzene
m/
p­
Xylene
Surface
Water
Observed
Release
Factor
Value:
550
SW­
Likelihood
of
Release
35
4.1.2.1.2
Potential
to
Release
Because
an
observed
release
to
Chequamegon
Bay
from
the
site
is
established
by
chemical
analysis,
potential
to
release
was
not
evaluated
(Ref.
1,
Section
4.1.2.1.2.
SW/
DW­
Waste
Characteristics
36
4.1.2.2
Drinking
Water
Threat
Waste
Characteristics
The
Ashland
Water
Utility
has
a
drinking
water
intake
in
Chequamegon
Bay
on
Lake
Superior.
The
Ashland
Water
Utility
plant
is
located
in
the
City
of
Ashland,
Wisconsin.
The
intake
is
located
1922
feet
off
shore
in
Chequamegon
Bay
and
is
8
feet
above
the
lake
bottom
where
the
mean
water
depth
is
23
feet.
The
Ashland
Water
Utility
serves
a
population
of
9115
(Ref.
21,
pages
1
to
3).

4.1.2.2.1
Toxicity/
Persistence
Toxicity/
Hazardous
Source
Toxicity
Persistence
Persistence
Reference
Substance
No.
Factor
Value
Factor
Value*
Factor
Value
(Table
4­
12)

Acenaphthene
2
10
1
10
Ref.
2,
B­
1
Acenaphthylene
1,
2
­­­
1
­­­
Ref.
2,
B­
1
Anthracene
1,
2
10
1
10
Ref.
2,
B­
1
Benzene
1,
2
100
1
100
Ref
2,
B­
2
Benzo(
a)
anthra
cene
1,
2
1000
1
1000
Ref
2,
B­
2
Benzo(
a)
pyrene
1,
2
10,000
1
10,000
Ref.
2,
B­
2
Benzo(
b)
fluoran­
1,
2
1000
1
1000
Ref.
2,
B­
3
thene
Benzo
(g,
h,
i)

perylene
1,
2
­­­
1
­­­
Ref.
2,
B­
2
Benzo(
k)
fluoran
thene
1,
2
100
1
100
Ref.
2,
B­
3
n­
Butylbenzene
1,
2
­­­
­­­
­­­
—
sec­
Butylbenzene
2
­­­
­­­
­­­
—
Chrysene
1,
2
10
1
10
Ref.
2,
B­
5
Ethylbenzene
1,2
10
1
10
Ref.
2,
B­
10
Fluoranthene
1,
2
100
1
100
Ref.
2,
B­
10
Fluorene
1,
2
100
1
100
Ref.
2,
B­
10
Indeno(
1,2,3
­cd)

pyrene
1,
2
1000
1
1000
Ref.
2,
B­
12
Isopropylbenzene
2
­­­
­­­
­­­
­­

p­
Isopropyltoluene
2
­­­
­­­
­­­
­­

Naphthalene
1,
2
100
1
100
Ref.
2,
B­
14
Phenanthrene
1,
2
­­­
1
­­­­
Ref.
2,
B­
16
n­
Propylbenzene
2
­­­
­­­
­­­
—
Pyrene
1,
2
100
1
100
Ref.
2,
B­
17
2,6­
Dimethylnaphtha
lene
­­­
­­­
­­­
­­­
­­­

2­
Ethylnaphtha
lene
­­­­
­­­
­­­
­­­
­­

1­
Methylnaphtha
lene
­­­
­­­
­­­
­­­
­­

2­
Methylnaptha
lene
1,
2
­­­
1
­­­
Ref.
2,
B­
14
SW/
DW­
Waste
Characteristics
37
Toluene
1,
2
10
1
10
Ref.
2,
B­
19
1­
Methylphenanthrene
­­—
­­­
­­­
­­­

1,2,4­
Trimethyl
benzene
1,
2
­­­
­­­
­­­
­­­

1,3,5­
Trimethyl
benzene
1,
2
­­­
­­­
­­­
­­

Xylenes
1,
2
10
1
10
Ref.
2,
B­
20
(p
xylenes)

Notes:
*
Persistence
value
for
Great
Lakes
(Ref.
1,
Table
4­
10)
—
Not
available
Benzo(
a)
pyrene
obtains
a
Toxicity/
Persistence
Value
of
10,000
or
1
x
10
4
.

Toxicity/
Persistence
Factor
Value:
1
x
10
4
SW/
DW­
Waste
Characteristics
38
4.1.2.2.2
Hazardous
Waste
Quantity
Source
No.
Source
Type
Source
Hazardous
Waste
Quantity
1
Landfill
11.76
2
Landfill
>0
Sum
of
Values:
11.76
According
to
HRS
Section
2.4.2.2,
if
any
target
is
subject
to
Level
II
concentrations,
assign
either
the
value
from
Table
2­
6
or
a
value
of
100,
whichever
is
greater,
as
the
hazardous
waste
quantity
factor
value
for
that
pathway.
Because
level
II
concentrations
are
documented
in
Chequamegon
Bay,
a
fishery
and
a
the
habitat
for
a
state
designated
endangered
species,
a
site
hazardous
waste
quantity
factor
value
of
100
is
assigned
(HRS
Section
2.4.2.2;
Table
4­
23;
Ref.
19
and
Ref.
25;
HRS
documentation
record
Sections
4.1.2.1.1,
4.1.3.3,
and
4.1.4.3).

Hazardous
Waste
Quantity
Factor
Value:
100
(HRS
Section
2.4.2.2)

4.1.2.2.3
Waste
Characteristics
Factor
Category
Value
Toxicity/
Persistence
Factor
Value:
1
x
10
4
Hazardous
Waste
Quantity
Factor
Value:
100
Toxicity/
Persistence
Factor
Value
x
Hazardous
Waste
Quantity
Factor
Value:
1
x
10
6
Waste
Characteristics
Factor
Category
Value:
32
(Ref.
1,
Table
2­
7)
SW/
DW­
Targets
39
4.1.2.3
Drinking
Water
Threat
Targets
Level
I
Concentrations
Level
I
concentrations
are
not
scored.

Level
II
Concentrations
Most
Distant
Level
II
Sample:

Sample
ID:
AS­
7
Distance
from
the
probable
point
of
entry:
225
feet
Reference:
10,
page
7
The
distance
from
the
probable
point
of
entry
(PPE)
along
Chequamegon
Bay
to
Sample
AS­
7
was
measured
using
the
scale
provided
on
the
sample
location
map
in
Reference
10
(Ref.
10,
page
7).

4.1.2.3.1
Nearest
Intake
Location
of
Nearest
Drinking
Water
Intake:
1922
feet
off
shore
in
Chequamegon
Bay
on
Lake
Superior,
Wisconsin
Level
I/
Level
II/
or
Potential:
Potential
Distance
from
the
probable
point
of
entry:
1922
feet
Type
of
Surface
Water
Body:
Great
Lake
(Moderate
depth)
Dilution
Weight
(Table
4­
13):
0.00001
References:
3;
21,
pages
1,
2
Nearest
Intake
Factor
Value:
0.0002
4.1.2.3.2
Population
4.1.2.3.2.2
Level
I
Concentrations
Not
Evaluated.

4.1.2.3.2.3
Level
II
Concentrations
No
Evaluated.

Level
II
Population
Factor
Value:
0
SW/
DW­
Targets
40
4.1.2.3.2.4
Potential
Contamination
Intake
Type
of
Surface
Water
Body
Assigned
Dilution
Weight
(Table
4­
13)
Population
Served
References
Ashland
Water
Utility
Great
Lake
(Moderate
depth)
0.00001
9115
21
Type
of
Surface
Water
Body
Total
Population
Dilution­
Weighted
Population
Value
(Table
4­
14)

Great
Lake
(Moderate
depth)
9115
0.05
Sum
of
Distance­
Weighted
Population
Values:
0.05
Sum
of
Distance­
Weighted
Population
Values/
10:
0.005
Potential
Contamination
Factor
Value:
0.005
SW/
DW­
Targets
41
4.1.2.3.3
Resources
The
Ashland
Lakefront/
Kreher
Park
on
Chequamegon
Bay
is
a
recreational
area
where
boating
and
fishing
are
encouraged
(Ref.
12,
page
2;
13;
26,
pages
2,
4,
5,
6).
The
Ashland
Water
Utility
has
a
surface
water
intake
in
Chequamegon
Bay
on
Lake
Superior
within
the
target
distance
limit
(Ref.
21,
pages
1
to
3).

Resources
Factor
Value:
5
SW/
HFC­
Waste
Characteristics
42
4.1.3.2
Human
Food
Chain
Threat
Waste
Characteristics
4.1.3.2.1
Toxicity/
Persistence/
Bioaccumulation
Toxicity/
Bioaccu­
Persistence/
Hazardous
Source
Toxicity
Persistence
mulation
Bioaccumula­
Reference
Substance
No.
Factor
Value
Factor
Value*
Value**
tion
Factor
Value(
Table
4­
16)

Acenaphthene
2
10
1
500
5000
Ref.
2,
B­
1
Acenaphthylene
1,
2
­­­
1
500
­­­
Ref.
2,
B­
1
Anthracene
1,
2
10
1
5000
50,000
Ref.
2,
B­
1
Benzene
1,
2
100
1
5000
500,000
Ref
2,
B­
2
Benzo(
a)
anthra
cene
1,
2
1000
1
50,000
50,000,000
Ref
2,
B­
2
Benzo(
a)
pyrene
1,
2
10,000
1
50,000
500,000,000
Ref.
2,
B­
2
Benzo(
b)
fluoran­
1,
2
1000
1
50,000
50,000,000
Ref.
2,
B­
3
thene
Benzo
(g,
h,
i)

perylene
1,
2
­­­
1
50,000
­­­
Ref.
2,
B­
2
Benzo(
k)
fluoran
thene
1,
2
100
1
50,000
5,000,000
Ref.
2,
B­
3
n­
Butylbenzene
1,
2
­­­
­­­
­­­
—
—
sec­
Butylbenzene
2
­­­
­­­
­­­
­­­
—
Chrysene
1,
2
10
1
500
5,000
Ref.
2,
B­
5
Ethylbenzene
1,2
10
1
50
500
Ref.
2,
B­
10
Fluoranthene
1,
2
100
1
5000
500,000
Ref.
2,
B­
10
Fluorene
1,
2
100
1
5000
500,000
Ref.
2,
B­
10
Indeno(
1,2,3
­cd)

pyrene
1,
2
1000
1
50,000
50,000,000
Ref.
2,
B­
12
Isopropylbenzene
2
­­­
­­­
­­­
­­­
—
p­
Isopropyltoluene
2
­­­
­­­
­­­
­­­
—
Naphthalene
1,
2
100
1
500
50,000
Ref.
2,
B­
14
Phenanthrene
1,
2
­­­
1
50
­­­
Ref.
2,
B­
16
n­
Propylbenzene
2
Pyrene
1,
2
100
1
50
5000
Ref.
2,
B­
17
2,6­
Dimethylnaphthalene
­­­
­­­­
—
—
—
—
SW/
HFC­
Waste
Characteristics
43
2­
Ethylnaphthalene
­­­­
­­­
—
­­­
—
—
1­
Methylnaphtha
lene
­­­
­­­
­­­­
­­­
—
—
2­
Methylnaptha
lene
1,2
­­­
1
5,000
­­­
Ref.
2,
B­
14
Toluene
1,
2
10
1
50
500
Ref.
2,
B­
19
1­
Methylphenanthrene­­—
­­­
­­­
­­­
­­­­
—
1,2,4­
Trimethyl
benzene
1,
2
­­­
­­­
­­­
­­­­
—
1,3,5­
Trimethyl
benzene
1,
2
­­­
­­­
­­­­
—
—
Xylenes
1,
2
10
1
50
500
Ref.
2,
B­
20
(p
xylenes)

Notes:
*
Persistence
value
for
Great
Lakes
(Table
4­
10)
**
Bioaccumulation
factor
value
for
Freshwater
­­­
Not
available
Benzo(
a)
pyrene
obtains
a
Toxicity/
Persistence/
Bioaccumulation
Factor
Value
of
500,000,000
or
5
x
10
8
.

Toxicity/
Persistence/
Bioaccumulation
Factor
Value:
5
x
10
8
SW/
HFC­
Waste
Characteristics
44
4.1.3.2.2
Hazardous
Waste
Quantity
Source
No.
Source
Type
Source
Hazardous
Waste
Quantity
1
Landfill
11.76
2
Landfill
>0
Sum
of
Values:
11.76
According
to
HRS
Section
2.4.2.2,
if
any
target
is
subject
to
Level
II
concentrations,
assign
either
the
value
from
Table
2­
6
or
a
value
of
100,
whichever
is
greater,
as
the
hazardous
waste
quantity
factor
value
for
that
pathway.
Because
level
II
concentrations
are
documented
in
Chequamegon
Bay,
a
fishery
and
a
the
habitat
for
a
state
designated
endangered
species,
a
site
hazardous
waste
quantity
factor
value
of
100
is
assigned
(HRS
Section
2.4.2.2;
Table
4­
23;
Ref.
19
and
Ref.
25;
HRS
documentation
record
Sections
4.1.2.1.1,
4.1.3.3,
and
4.1.4.3).

Hazardous
Waste
Quantity
Factor
Value:
100
(HRS
Section
2.4.2.2)

4.1.3.2.3
Waste
Characteristics
Factor
Category
Value
Toxicity/
Persistence/
Bioaccumulation
Factor
Value:
500,000,000
Hazardous
Waste
Quantity
Factor
Value:
100
Toxicity/
Persistence
x
Hazardous
Waste
Quantity
Factor
Value:
1,000,000
or
1
x
10
6
Toxicity/
Persistence
x
Hazardous
Waste
Quantity
Factor
Value
x
Bioaccumulation
Factor
Value:
5
x
10
10
Waste
Characteristics
Factor
Category
Value:
320
(Ref.
1,
Table
2­
7)
SW/
HFC­
Targets
45
4.1.3.3
Human
Food
Chain
Threat
Targets
Actual
Human
Food
Chain
Contamination
Closed
Fisheries:

No
closed
fisheries
are
scored.

Level
I
Concentrations
Level
I
concentrations
are
not
scored.

Level
II
Concentrations
Most
Distant
Level
II
Sample:

Sample
ID:
AS­
7
Distance
from
the
probable
point
of
entry:
225
feet
Reference:
10,
page
7
The
distance
from
the
probable
point
of
entry
(PPE)
along
Chequamegon
Bay
to
Sample
AS­
7
was
measured
using
the
scale
provided
on
the
sample
location
map
in
Reference
10
(Ref.
10,
page
7).

Level
II
Fishery:

Chequamegon
Bay
is
a
evaluated
as
a
Level
II
fishery
within
the
surface
water
pathway
target
distance
limit
(Refs.
10,
page
7;
Ref.
13,
pages
1,
5;
Ref.
26).
SW/
HFC­
Targets
46
4.1.3.3.1
Food
Chain
Individual
Chequamegon
Bay
is
subject
to
actual
contamination
based
on
observed
release
samples
documenting
hazardous
substances
in
the
fishery
by
chemical
analysis.
Several
hazardous
substances
with
a
bioaccumulation
potential
of
500
or
greater
were
detected
in
observed
release
sediment
samples
in
Chequamegon
Bay.
Samples
AS­
2,
AS­
3,
AS­
4,
and
AS­
7
all
contain
hazardous
substances,
as
listed
below,
with
a
bioaccumulation
potential
of
50,000,
the
highest
bioaccumulation
potential
in
the
HRS
(Ref.
1,
Table
4­
15).
A
food
chain
individual
factor
value
of
45
is
assigned
to
the
site
score
because
the
observed
release
sediment
samples
in
Chequamegon
Bay
document
that
the
fishery
is
subject
to
Level
II
contamination.

Sample
ID:
AS­
2,
AS­
3,
AS­
4,
AS­
7
Level
I/
Level
II/
or
Potential:
Level
II
Hazardous
Substance:
Benzo(
a)
pyrene
and
Indeno(
1,2,3­
cd)
pyrene
Bioaccumulation
Potential:
50,000
Identity
of
Fishery
Type
of
Surface
Water
References
Dilution
Weight
(Ref.
1,
Table
4­
13)

Chequamegon
Bay
Great
Lake
3;
10,
page
7;
13,
pages
1,
5;
26
0.0001
Chequamegon
Bay
is
on
Lake
Superior,
one
of
the
five
Great
Lakes
in
the
United
States.
Samples
documenting
an
observed
release
were
all
collected
at
a
depth
of
1.4
to
2.8
feet
in
Chequamegon
Bay
(Ref.
3;
Ref.
10,
pages
3
to
4,
6,
7).

Food
Chain
Individual
Factor
Value:
45
SW/
HFC­
Targets
47
4.1.3.3.2
Population
4.1.3.3.2.1
Level
I
Concentrations
Identity
of
Fishery
Annual
Production
Human
Food
Chain
References
Population
Value
(Ref.
1,
Table
4­
18)

Sum
of
Level
I
Human
Food
Chain
Population
Values:
Sum
of
Level
I
Human
Food
Chain
Population
Values
x
10:

Level
I
Concentrations
Factor
Value:
NS
NS
Not
scored
SW/
HFC­
Targets
48
4.1.3.3.2.2
Level
II
Concentrations
Identity
of
Fishery
Annual
Production
(Pounds)
References
Human
Food
Chain
Population
Value
(Ref.
1,
Table
4­
18
Chequamegon
Bay
>0,
but
unknown
10,
page
7;
13,
pages
1,
5;
26
0.03
Sum
of
Level
II
Human
Food
Chain
Population
Values:
0.03
Level
II
Concentrations
Factor
Value:
0.03
4.1.3.3.2.3
Potential
Human
Food
Chain
Contamination
The
potential
human
food
chain
was
not
scored
because
it
would
not
have
contributed
to
the
overall
site
score.

Sum
of
P
i
x
D
i
:
0
(Sum
of
P
i
x
D
i
)/
10:
0
Potential
Human
Food
Chain
Contamination
Factor
Value:
0
SW/
ENV­
Waste
Characteristics
49
4.1.4.2
Environmental
Threat
Waste
Characteristics
4.1.4.2.1
Ecosystem
Toxicity/
Persistence/
Bioaccumulation
Toxicity
Bioaccu­
Persistence/
Hazardous
Source
Ecotoxicity
Persistence
mulation
Bioaccumula­
Reference
Substance
No.
Factor
Value
Factor
Value*
Value
**
Factor
Value
(Table
4­
21)

Acenaphthene
2
10,000
1
500
5,000,000
Ref.
2,
B­
1
Acenaphthylene
1,
2
­­­
1
500
­­­
Ref.
2,
B­
1
Anthracene
1,
2
10,000
1
5000
50,000,000
Ref.
2,
B­
2
Benzene
1,
2
100
1
5000
500,000
Ref
2,
B­
2
Benzo(
a)
anthra
cene
1,
2
10,000
1
50,000
500,000,000
Ref
2,
B­
2
Benzo(
a)
pyrene
1,
2
10,000
1
50,000
500,000,000
Ref.
2,
B­
2
Benzo(
b)
fluoran­
1,
2
­­­
1
50,000
­­­
Ref.
2,
B­
3
thene
Benzo
(g,
h,
i)

perylene
1,
2
­­­
1
50,000
­­­
Ref.
2,
B­
2
Benzo(
k)
fluoran
thene
1,
2
­­­
1
50,000
­­­
Ref.
2,
B­
3
n­
Butylbenzene
1,
2
­­­
­­­
­­­
—
—
sec­
Butylbenzene
2
­­­
­­­
­­­
—
—
Chrysene
1,
2
1000
1
500
500,000
Ref.
2,
B­
5
Ethylbenzene
1,2
100
1
50
5000
Ref.
2,
B­
10
Fluoranthene
1,
2
10000
1
500
5,000,000
Ref.
2,
B­
10
Fluorene
1,
2
1000
1
5000
5,000,000
Ref.
2,
B­
10
Indeno(
1,2,3
­cd)

pyrene
1,
2
­­­
1
50,000
­­­
Ref.
2,
B­
12
Isopropylbenzene
2
­­­
­­­
­­­
—
—
p­
Isopropyltoluene
2
­­­
­­­
­­­
—
—
Naphthalene
1,
2
1000
1
500
500,000
Ref.
2,
B­
14
Phenanthrene
1,
2
1000
1
5000
5,000,000
Ref.
2,
B­
16
n­
Propylbenzene
2
­­­
­­­
­­­
­­­
—
Pyrene
1,
2
10,000
1
50
500,000
Ref.
2,
B­
17
2,6­
Dimethylnaphtha
lene
­­­
­­­
­­­
­­­
—
2­
Ethylnaphtha
lene
­­­
­­­
­­­
­­­
—
1­
Methylnaphtha
lene
­­­
­­­
­­­
­­­
—
2­
Methylnaptha
lene
1,
2
1000
1
5,000
5,000,000
Ref.
2,
B­
14
Toluene
1,
2
100
1
50
5,000
Ref.
2,
B­
19
1­
Methylphenanthrene
­­­
­­­
­­­
­­­
—
SW/
ENV­
Waste
Characteristics
50
1,2,4­
Trimethyl
benzene
1,
2
­­­
­­­
­­­
­­­
—
1,3,5­
Trimethyl
benzene
1,
2
­­­
­­­
­­­
­­­
—
Xylenes
1,
2
10
1
50
500
Ref.
2,
B­
20
(p
xylenes)

Notes:
*
Persistence
value
for
Great
Lakes
(Ref.
1,
Table
4­
10)
**
Bioaccumulation
factor
value
for
Freshwater
—
Not
available
Benzo(
a)
anthracene
and
Benzo(
a)
pyrene
are
assigned
an
Ecosystem
Toxicity/
Persistence/
Bioaccumulation
Factor
Value
of
50,000,000
or
5
x
10
8
Ecosystem
Toxicity/
Persistence/
Bioaccumulation
Factor
Value:
5
x
10
8
SW/
ENV­
Waste
Characteristics
51
4.1.4.2.2.
Hazardous
Waste
Quantity
Source
No.
Source
Type
Source
Hazardous
Waste
Quantity
1
Landfill
11.76
2
Landfill
>0
Sum
of
Values:
11.76
According
to
HRS
Section
2.4.2.2,
if
any
target
is
subject
to
Level
II
concentrations,
assign
either
the
value
from
Table
2­
6
or
a
value
of
100,
whichever
is
greater,
as
the
hazardous
waste
quantity
factor
value
for
that
pathway.
Because
level
II
concentrations
are
documented
in
Chequamegon
Bay,
a
fishery
and
a
the
habitat
for
a
state
designated
endangered
species,
a
site
hazardous
waste
quantity
factor
value
of
100
is
assigned
(HRS
Section
2.4.2.2;
Table
4­
23;
Ref.
19
and
Ref.
25;
HRS
documentation
record
Sections
4.1.2.1.1,
4.1.3.3,
and
4.1.4.3).

Hazardous
Waste
Quantity
Factor
Value:
100
(HRS
Section
2.4.2.2)

4.1.4.2.3.
Waste
Characteristics
Factor
Category
Value
Ecosystem
Toxicity/
Persistence/
Bioaccumulation
Factor
Value:
5
x
10
8
Hazardous
Waste
Quantity
Factor
Value:
100
Ecosystem
Toxicity/
Persistence
Factor
Value
x
Hazardous
Waste
Quantity
Factor
Value:
1,000,000
or
1
x
10
6
Ecosystem
Toxicity/
Persistence
Factor
Value
x
Hazardous
Waste
Quantity
Factor
Value
x
Bioaccumulation
Factor
Value:
5
x
10
10
Waste
Characteristics
Factor
Category
Value:
320
(Ref.
1,
Table
2­
7)
SW/
ENV­
Targets
52
4.1.4.3
Environmental
Threat
Targets
Level
I
Concentrations
Not
evaluated.

Level
II
Concentrations
Most
Distant
Level
II
Sample
Sample
ID:
AS­
7
Distance
from
the
probable
point
of
entry:
225
feet
Reference:
10,
page
7;
19,
pages
1,
2,
3,
4;
25
The
distance
from
the
probable
point
of
entry
(PPE)
along
Chequamegon
Bay
to
Sample
AS­
7
was
measured
using
the
scale
provided
on
the
sample
location
map
in
Reference
10
(Ref.
10,
page
7).

The
Common
Tern
is
listed
as
endangered
in
Wisconsin
and
has
been
designated
by
the
U.
S.
Fish
and
Wildlife
Service
as
a
species
of
management
concern
in
the
Great
Lakes.
The
Common
Tern
nests
in
Chequamegon
Bay,
Ashland,
Wisconsin
(Ref.
19,
pages
1
to
4;
Ref.
25;
Ref
30,
pages
1
to
7).

4.1.4.3.1
Sensitive
Environments
4.1.4.3.1.1.
Level
I
Concentrations
Sensitive
Environments
Not
evaluated
Wetlands
Not
evaluated
Sum
of
Level
I
Sensitive
Environments
Value
+
Wetlands
Value:
0
(Sum
of
Level
Sensitive
Environments
Value
+
Wetlands
Value)
x
10:
0
Level
I
Concentrations
Factor
Value:
0
SW/
ENV­
Targets
53
4.1.4.3.1.2.
Level
II
Concentrations
Sensitive
Environments
The
Common
Tern
is
listed
as
endangered
in
Wisconsin
and
has
been
designated
by
the
U.
S.
Fish
and
Wildlife
Service
as
a
species
of
management
concern
in
the
Great
Lakes.
The
Common
Tern
nests
in
Chequamegon
Bay
less
than
a
½
mile
from
the
Ashland/
Northern
States
Power
Lakefront
site.
The
site
is
within
the
habitat
of
the
Common
Tern's
nesting
area
(Ref.
19;
Ref.
25;
Ref.
30).

Sensitive
Environment
Distance
from
PPE
to
Nearest
Sensitive
Environment
References
Sensitive
Environment
Value
(Ref.
1,
Table
4­
23)

Habitat
known
to
be
used
by
State
designated
endangered
or
threatened
species
0
feet
19;
25;
30
50
Sum
of
Level
II
Sensitive
Environments
Value:
50
Wetlands
Not
scored.

Sum
of
Level
II
Wetland
Frontages:
0
Wetlands
Value
(Table
4­
24):

Sum
of
Level
II
Sensitive
Environments
Value
+
Wetlands
Value:
50
Level
II
Concentrations
Factor
Value:
50
4.1.4.3.1.3
Potential
Contamination
Sensitive
Environments
Not
scored
Wetlands
Not
scored
Potential
Contamination
Factor
Value
:
0