Document ID: EPA-HQ-RCRA-2003-0002-0217
Agency: epa
Document Type: Supporting & Related Material
Title: 
Posted Date: 2003-08-04T04:00Z

GENERAL
STATEMENTS
Indiana
Sites
°
All
of
the
Indiana
sites
analyzed
for
this
presentation
are
located
in
southwestern
Indiana,
which
has
a
bedrock
geology
generally
consisting
of
complexly
interbedded,
discontinuous
layers
of
sandstone,
siltstone,
shale,
thin
limestone
and
bituminous
coal.
There
are
two
main
sources
of
groundwater
which
include
the
unconsolidated
sand
and
gravel
deposits
along
major
rivers/
streams
and
the
Pennsylvanian
age
bedrock.
Groundwater
flow
in
the
bedrock
is
primarily
fracture
flow
and
along
bedding
planes
and
cleats
in
the
coal
seams
and
in
unfractured
sandstones
and
other
permeable
units.

°
Up­
gradient
and
down­
gradient
wells
were
not
identified
in
the
reports
reviewed
for
this
study.
The
Indiana
Department
of
Natural
Resources
(
IDNR)
stated
that
it
is
not
possible
to
determine
the
pre­
mining
ground­
water
flow
conditions
at
this
time,

however,
due
to
the
physical
attributes
and
dynamic
nature
of
mining,
it
is
possible
that
the
initial
ground­
water
flow
direction
will
not
be
maintained
during
mining
and
possibly
after
mining
operations
are
complete.
For
example,
a
well
identified
as
down­
gradient
under
baseline
conditions
may
become
an
up­
gradient
well
during
mining.
Therefore,
groundwater
data
was
reviewed
to
determine
if
there
were
any
noticeable
trends
pre­
and
post­
placement.
The
wells
selected
for
graphical
purposes
are
based
on
well
location,
well
construction
(
i.
e.
position
relative
to
ash
placement
and
bedrock
vs.
unconsolidated)
and
overall
monitoring
data.

°
Ms.
Deborah
A.
Dale,
Hydrogeologist­
Indiana
Department
of
Natural
Resources
Division
of
Reclamation,
states
that
"
It
has
been
Indiana's
experience
that
the
quality
of
spoil
water,
with
regard
to
mining
parameters,
does
not
appear
to
change
significantly
with
the
disposal
of
CCW.
This
observation
is
based
on
a
comparison
of
water­
quality
data
obtained
from
surface
mines
in
Indiana
with,
and
without,
CCW
material."

°
Groundwater
monitoring
data
and
surface
water
quality
data
were
provided
for
several
sites,
however,
only
groundwater
monitoring
data
was
utilized
for
analysis
for
this
presentation.

°
Groundwater
constituents
identified
above
the
MCLs
at
one
or
more
of
the
sites
reviewed
for
Indiana
include:
pH,
total
dissolved
solids
(
TDS),
aluminum,
iron,
manganese,
zinc,
and
sulfate
(
Secondary
MCLs)
and
cadmium
(
Primary
MCL).

General
statements
regarding
groundwater
quality
at
the
sites
are
as
follows:
Groundwater
analysis
at
Universal
and
Viking
show
no
significant
effect
on
the
metals
(
aluminum,
iron,
manganese,
zinc,
and
cadmium)
concentrations
pre­
and
post
placement.
However,
results
show
metal
concentrations
are
decreasing
at
Deer
Ridge
and
the
NW
Area
of
Prides
Creek.
The
South
Area
of
Prides
Creek
showed
increasing
trends
for
metals.
Pennsylvania
Sites
°
The
geology
of
the
B­
D
mine
site
and
Big
Gorilla
were
very
similar
being
that
the
are
located
in
Schuykill
County.
The
bedrock
present
at
these
sites
is
predominately
middle
to
late
Pennsylvanian
in
age,
consisting
of
the
Llewellyn
formation,

Mauch
Chunck
formation
and
the
Pottsville
formation.
The
two
sites
are
located
in
Pennsylvania's
southern
anthracite
region.

°
The
Revloc
and
Maple
Coal
site
are
also
very
similar
in
geology,
both
sites
are
located
within
Cambria
County
located
in
Pennsylvania's
main
bituminous
area
producing
a
medium
to
low
volatile
bituminous
coal.
Cambria
County's
bedrock
geology
is
Pennsylvanian
in
age
and
is
categorized
by
cyclic
sequences
of
sandstone
and
shale
with
thin
beds
of
limestone
and
bituminous
coal.

°
The
Pennsylvania
Department
of
Environmental
Protection
(
DEP)
Bureau
of
Mining
and
Reclamation
provided
data
for
this
project.
Monitoring
points
were
pre­
determined
by
DEP
and
depicted
as
background
or
up/
down­
gradient
relative
to
the
disposal
area.

°
Pennsylvania
did
not
provide
any
conclusions
regarding
this
type
of
disposal
of
CCW,
with
respect
to
how
this
disposal
practice
is
generally
effecting
the
over­
all
groundwater
quality
at
sites.

°
Groundwater
monitoring
data
and
surface
water
quality
data
was
provided
for
several
sites,
however,
only
groundwater
monitoring
data
was
utilized
for
analysis
for
this
presentation.

°
Groundwater
constituents
identified
above
the
MCLs
at
one
or
more
of
the
sites
reviewed
for
Pennsylvania
include:
pH,
total
dissolved
solids
(
TDS),
aluminum,
iron,
manganese,
zinc,
and
sulfate
(
Secondary
MCLs)
and
arsenic,
chromium,
and
cadmium
(
Primary
MCLs).
General
statements
regarding
groundwater
quality
at
the
sites
are
as
follows:
Groundwater
analysis
at
the
anthracite
mines
(
Big
Gorilla
and
B­
D)
show
baseline
pH
ranges
between
3
and
4.5,
with
no
significant
effect
on
the
metals
concentrations
post
placement
at
the
B­
D
Site
and
variable
effects
on
metal
concentrations
at
Big
Gorilla.

Groundwater
analysis
showed
down­
gradient
pH
ranges
between
2
and
4.5
at
the
bituminous
mines
(
Revloc
and
Maple
Creek).
The
results
show
that
all
constituent
concentrations
are
decreasing
post­
placement
at
Revloc
and
Maple
Creek.
ADDITIONAL
INFORMATION
Indiana
°
Additional
water
quality
data
was
analyzed
to
include
surface
water
monitoring
points
when
included
with
the
data
submittal
from
the
Indiana
Department
of
Natural
Resources
(
IDNR).
However,
only
surface
water
quality
sample
data
were
reviewed
for
sites
that
monitored
potential
discharges
to
streams
and
rivers;
water
quality
data
for
sediment
basin
samples
were
not
utilized
for
this
presentation.
Additional
data
were
provided
for
the
Universal
and
Deer
Ridge
sites.

°
The
Universal
site
included
three
years
of
up­
stream
(
post­
placement)
and
fourteen
years
of
down­
stream
(
1
year
pre­
and
13
years
post­
placement)
monitoring
data
along
Coal
Creek.
Down­
stream
monitoring
data
show
an
increase
in
pH
to
background
levels
and
significant
reductions
in
total
dissolved
solids
(
TDS)
and
iron
post
placement.
Manganese
concentrations
decreased
down
stream,
however,
remain
slightly
higher
than
the
up­
stream
monitoring
point.
The
overall
trend
appears
more
positive
than
negative.

°
At
Deer
Ridge,
approximately
ten
years
(
3
years
pre­
placement
and
7
years
post­
placement)
of
down­
stream
monitoring
data
exists.
Baseline
data
were
initially
collected
for
an
adjacent
watershed
where
disposal
did
not
occur
and
is
no
longer
monitored.
Down­
stream
monitoring
data
from
show
reductions
in
cadmium,
manganese,
TDS,
and
iron
post
placement.
The
overall
trend
in
water
quality
appears
to
be
positive
post­
placement.

°
Additionally,
at
Viking
Mine,
sulfate
was
not
graphed
for
this
presentation.
Groundwater
monitoring
data
at
Viking
Mine
shows
sulfate
concentrations
below
the
MCLs
at
placement
time.
The
sulfate
concentrations
spiked
above
the
MCLs
during
the
first
quarter
of
2000
(~
4
years
post
placement),
then
decreased
below
the
MCLs
through
most
recent
sampling
data.
Indiana
Mine
Sites
Universal
Mine
Viking
Mine
Prides
Creek
Mine
Deer
Ridge
Mine
Vigo
County
Daviess
County
Pike
County
Warrick
County
X
X
X
X
#
#

##
Pennsylvania
Mine
Sites
Cambria
County
Schuykill
County
Revloc
Mine
Maple
Coal
Mine
B­
D
Mine
Big
Gorilla
Mine
X
X
X
X
Prides
Creek
Universal
Deer
Ridge
Viking
Big
Gorilla
B­
D
Revloc
Maple
Coal
Acidity
Acidity
Acidity
Acidity
ALUMINUM
ALUMINUM
Arsenic
Arsenic
Alkalinity
Alkalinity
Alkalinity
Alkalinity
ARSENIC
ARSENIC
Barium
Barium
Aluminum
Aluminum
Aluminum
Aluminum
CADMIUM
CADMIUM
Cadmium
Cadmium
Arsenic
Arsenic
Arsenic
Arsenic
CALCIUM
CALCIUM
Chromium
Chromium
Barium
Barium
Barium
Barium
CHLORIDE
CHLORIDE
Fluoride
Fluoride
Bicarb
Bicarb
Bicarb
Bicarb
CHROMIUM
CHROMIUM
Lead
Lead
Boron
Boron
Boron
Boron
COPPER
COPPER
Mercury
Mercury
Cadmium
Cadmium
Cadmium
Cadmium
LEAD
LEAD
Nitrate
Nitrate
Calcium
Calcium
Calcium
Calcium
MAGNESIUM
MAGNESIUM
Selenium
Selenium
Carbonate
Carbonate
Cat_
Ion
Cat_
Ion
MERCURY
MERCURY
Silver
Silver
Cat_
Ion
Cat_
Ion
Chloride
Chloride
NICKEL
NICKEL
Calcium
Calcium
Chloride
Chloride
Chromium
Chromium
POTASSIUM
POTASSIUM
Magnesium
Magnesium
Chromium
Chromium
Copper
Copper
SELENIUM
SELENIUM
Chloride
Chloride
Copper
Copper
Field_
pH
Field_
pH
SODIUM
SODIUM
Phenol
Phenol
Field_
pH
Field_
pH
Flow_
Rate
Flow_
Rate
ZINC
ZINC
Sodium
Sodium
Flow_
Rate
Flow_
Rate
Fluoride
Fluoride
BARIUM
BARIUM
Ammonia
Nitrogen
Ammonia
Nitrogen
Fluoride
Fluoride
Hardness
Hardness
SILVER
SILVER
Potassium
Potassium
Hardness
Hardness
Iron
Iron
LAB
pH
LAB
pH
Copper
Copper
Iron
Iron
Lab_
pH
Lab_
pH
FIELD
pH
FIELD
pH
Zinc
Zinc
Lab_
pH
Lab_
pH
Lead
Lead
SPECIF.
COND.
SPECIF.
COND.
LAB
pH
LAB
pH
Lead
Lead
Magnesium
Magnesium
Alkalinity
Alkalinity
FIELD
pH
FIELD
pH
Magnesium
Magnesium
Manganese
Manganese
ACIDITY
ACIDITY
SPECIF.
COND.
SPECIF.
COND.

Manganese
Manganese
Mercury
Mercury
IRON
IRON
Alkalinity
Alkalinity
Mercury
Mercury
Molybdenum
Molybdenum
MANGANESE
MANGANESE
ACIDITY
ACIDITY
Molybdenum
Molybdenum
Nickel
Nickel
SULFATE
SULFATE
IRON
IRON
Nickel
Nickel
Nitrate
Phospor
TDS
TDS
MANGANESE
MANGANESE
Phospor
Potassium
Phosphate
Potassium
TSS
TSS
ALUMINUM
ALUMINUM
Potassium
Selenium
Phospor
Selenium
AMMONIA­
NITROGEN
AMMONIA­
NITROGEN
SULFATE
SULFATE
Selenium
Silver
Potassium
Silicon
NITRATE­
NITROGEN
NITRATE­
NITROGEN
TDS
TDS
SiliDiox
Sodium
Selenium
SiliDiox
BICARB
BICARB
TSS
TSS
Silver
Sp_
Con
Silicon
Silver
TURBIDITY
TURBIDITY
Sodium
Sulfate
SiliDiox
Sodium
CHEM
OX
DEMAND
CHEM
OX
DEMAND
Sp_
Con
Sulfide
Silver
Sp_
Con
FLUORIDE
FLUORIDE
Sulfate
TDS
Sodium
Sulfate
CHLORIDE
CHLORIDE
Sulfide
Temperature
Sp_
Con
Sulfide
SODIUM
SODIUM
TDS
Tot_
Org
Sulfate
TDS
Temperature
TotSetS
Sulfide
Temperature
Titanium
TotSusS
TDS
Titanium
Tot_
Org
Zinc
Temperature
Tot_
Org
TotSusS
Titanium
TotSusS
Vanadium
Tot_
Org
Vanadium
Zinc
TotSusS
Zinc
Vanadium
Zinc
Indiana
Pennsylvania
DEER
RIDGE
MINE,
WARRICK
COUNTY,
INDIANA
Site
Information
°
Former
surface
bituminous
mine,
temperate
to
humid
climate
°
Primary
purpose
­
site
reclamation
°
Fly
ash
from
United
Minerals
and
Black
Beauty
Coal
Company
°
Dry
ash
was
placed
below
water
table
with
5'
of
soil
placed
on
top
with
a
vegetation
cover
Groundwater
Information
°
Groundwater
monitoring
data
were
available
for
2
years
pre­
placement
and
for
5
years
post­
placement
of
the
ash.

°
pH
levels
in
the
shallow
well
between
the
upper
and
lower
MCL
limit
prior
to
placement;
since
then
it
has
decreased
to
at
or
below
lower
MCL
limit.
pH
in
bedrock
well
generally
unchanged,
between
upper
and
lower
MCL
limit
since
placement.

°
Cadmium
prior
to
placement
was
above
the
MCL
in
both
wells.
Since
placement,
cadmium
has
dropped
below
the
MCL.

°
TDS
for
both
wells
above
MCL
prior
to
placement
and
has
since
decreased
to
at
or
below
MCLs
with
spikes
above
the
MCL.

°
Manganese
and
iron
concentrations
in
both
wells
above
MCL
prior
to
placement
and
have
since
decreased
to
at
or
below
MCLs
with
spikes
in
the
shallow
well.
Deer
Ridge
Mine:
Groundwater
pH
Levels
­
Pre
and
Post
CCB
Placement
4.5
5
5.5
6
6.5
7
7.5
8
8.5
9
01/
01/
92
05/
15/
93
09/
27/
94
02/
09/
96
06/
23/
97
11/
05/
98
03/
19/
00
08/
01/
01
12/
14/
02
Groundwater
Sampling
Date
pH
Placement
Date
1­
YR
Post
Place.
3­
YR
Post
Place.
5­
YR
Post
Place.

Lower
Limit
­
Secondary
MCL
(
6.5)

CW­
1G
(
Shallow
Well­
Outside
Placement
Area)
CW­
2G
(
Bedrock
Well)
Upper
Limit
­
Secondary
MCL
(
6.5)

Deer
Ridge
Mine:
Groundwater
TDS
Concentrations
­
Pre
and
Post
CCB
Placement
0
200
400
600
800
1000
1200
1400
1600
06/
01/
92
10/
14/
93
02/
26/
95
07/
10/
96
11/
22/
97
04/
06/
99
08/
18/
00
12/
31/
01
Groundwater
Sampling
Date
TDS
(
mg/
l)
Placement
Date
1­
YR
Post
Place.
3­
YR
Post
Place.
5­
YR
Post
Place.

MCL
(
500)
CW­
1G
(
Shallow
Well­
Outside
Placement
Area)
CW­
2G
(
Bedrock
Well)
Deer
Ridge
Mine:
Groundwater
Manganese
Concentrations
­
Pre
and
Post
CCB
Placement
0
1
2
3
4
5
6
7
8
06/
01/
92
10/
14/
93
02/
26/
95
07/
10/
96
11/
22/
97
04/
06/
99
08/
18/
00
12/
31/
01
Groundwater
Sampling
Date
Mn
(
mg/
l)
Placement
Date
1­
YR
Post
Place.
3­
YR
Post
Place.
5­
YR
Post
Place.

MCL
(
0.05)
CW­
1G
(
Shallow
Well­
Outside
Placement
Area)

CW­
2G
(
Bedrock
Well)
Deer
Ridge
Mine:
Groundwater
Cadmium
Concentrations
­
Pre
and
Post
CCB
Placement
0
0.005
0.01
0.015
0.02
0.025
0.03
0.035
06/
01/
92
10/
14/
93
02/
26/
95
07/
10/
96
11/
22/
97
04/
06/
99
08/
18/
00
12/
31/
01
Groundwater
Sampling
Date
Cd
(
mg/
l)
Placement
Date
1­
YR
Post
Place.
3­
YR
Post
Place.
5­
YR
Post
Place.

MCL
(
0.005)
CW­
1G
(
Shallow
Well­
Outside
Placement
Area)

CW­
2G
(
Bedrock
Well)
Spike
(
0.1
mg/
l)
Deer
Ridge
Mine:
Groundwater
Iron
Concentrations
­
Pre
and
Post
CCB
Placement
0
2
4
6
8
10
12
14
16
18
06/
01/
92
10/
14/
93
02/
26/
95
07/
10/
96
11/
22/
97
04/
06/
99
08/
18/
00
12/
31/
01
Groundwater
Sampling
Date
Fe
(
mg/
l)
Placement
Date
1­
YR
Post
Place.
3­
YR
Post
Place.
5­
YR
Post
Place.

MCL
(
0.3)
CW­
1G
(
Shallow
Well­
Outside
Placement
Area)

CW­
2G
(
Bedrock
Well)
Spike
53.5
(
mg/
l)
Spike
92.5
(
mg/
l)
PRIDES
CREEK
MINE
SITE,
PIKE
COUNTY,
INDIANA
Site
Information
°
Former/
active
surface
bituminous
mine,
temperate
to
humid
climate
°
Primary
purpose
­
site
reclamation
°
Fly
and
bottom
ash
from
Hoosier
Energy
Ratts
Plant,
PSI
Edwardsport
Station,
and
PSI
Noblesville
Station
°
No
other
material
added
to
the
ash,
except
mine
spoils
also
are
used
for
backfill;
minimum
of
8
feet
of
cover
placed
on
top
of
ash;
no
liner;
ash
placed
below
the
water
table
Groundwater
Information
°
pH
pre­
placement
within
the
MCLs;
since
placement,
decreased
to
at
or
below
lower
MCL
at
the
South
Area.

°
TDS
were
consistent
over
time,
except
for
the
up­
gradient
well
at
the
South
Area,
which
increases.

°
Manganese
fluctuated
around
the
MCL
for
both
wells
in
the
NW
Area
and
were
above
the
MCL
in
the
upgradient
well
and
fluctuating
around
the
MCL
in
the
down­
gradient
well
in
the
South
Area
pre­
placement.

Post­
placement
conc.
remained
below
the
MCL
for
the
NW
Area
and
increased
above
the
MCL
for
both
wells
at
the
South
Area.

°
Iron
concentrations
before
placement
were
above
the
MCLs,
but
have
gradually
decreased
with
time
at
the
NW
Area
and
increased
with
time
at
the
South
Area.

°
Cadmium
levels
prior
to
placement
were
above
the
MCLs
in
both
up­
and
down­
gradient
wells
in
both
areas,

but
have
decreased
below
the
MCLs
post­
placement.

°
Aluminum
in
both
up­
and
down­
gradient
wells
in
both
areas
were
above
the
MCLs
pre­
placement.
Post
placement
conc.
of
aluminum
at
the
NW
Area
have
decreased
to
near
the
MCL
for
both
wells;
the
South
Area
conc.
have
decreased
up­
gradient,
while
the
down­
gradient
conc.
have
generally
increased.
Prides
Creek
Mine
Site
NW
Area:
Groundwater
pH
­
Pre
and
Post
CCB
Placement
3
4
5
6
7
8
9
1/
31/
93
6/
15/
94
10/
28/
95
3/
11/
97
7/
24/
98
12/
6/
99
4/
19/
01
9/
1/
02
Groundwater
Sampling
Date
pH
Placement
Date
1­
YR
Post
Place.
3­
YR
Post
Place.
5­
YR
Post
Place.

Upper
Limit
­
Secondary
MCL
Lower
Limit
­
Secondary
MCL
Well
A­
4
Assumed
Down­
Gradient
A­
6
Assumed
Up­
Gradient
Note
:
Groundwater
flow
direction
assumed
to
be
SSW
Prides
Creek
Mine
Site
South
Area
:
Groundwater
pH
­
Pre
and
Post
CCB
Placement
3
4
5
6
7
8
9
1/
31/
93
6/
15/
94
10/
28/
95
3/
11/
97
7/
24/
98
12/
6/
99
4/
19/
01
9/
1/
02
Groundwater
Sampling
Date
pH
Placement
Date
1­
YR
Post
Place.
3­
YR
Post
Place.
5­
YR
Post
Place.

Upper
Limit
­
Secondary
MCL
Lower
Limit
­
Secondary
MCL
Well
A­
G­
6
Assumed
Up­
Gradient
Well
A­
1
Assumed
Down­
Gradient
Note
:
Groundwater
flow
direction
assumed
to
be
SSW
Prides
Creek
Mine
South
Area:
Aluminum
Groundwater
Concentrations
­
Pre
and
Post
CCB
Placement
0
0.2
0.4
0.6
0.8
1
1.2
2/
13/
94
6/
28/
95
11/
9/
96
3/
24/
98
8/
6/
99
12/
18/
00
5/
2/
02
Groundwater
Sampling
Date
Alunimum
(
mg/
L)
Placement
Date
1­
YR
Post
Place.
3­
YR
Post
Place.
5­
YR
Post
Place.

MCL
(
0.05)
Well
A­
1
Assumed
Down­
Gradient
Peak
at
2.0
A­
G­
3
Assumed
Up­
Gradient
Peak
at
3.6
mg/
l
Note
:
Groundwater
flow
direction
assumed
to
be
SSW
Prides
Creek
Mine
NW
Area:
Aluminum
Groundwater
Concentrations
­
Pre
and
Post
CCB
Placement
0
0.2
0.4
0.6
0.8
1
1.2
2/
13/
94
6/
28/
95
11/
9/
96
3/
24/
98
8/
6/
99
12/
18/
00
5/
2/
02
Groundwater
Sampling
Date
Aluminum
(
mg/
L)
Placement
Date
1­
YR
Post
Place.
3­
YR
Post
Place.
5­
YR
Post
Place.

Well
A­
4
Assumed
Down­
Gradient
MCL
(
0.05)
Well
A­
6
Assumed
Up
Gradient
Note
:
Groundwater
flow
direction
assumed
to
be
SSW
Prides
Creek
Mine
NW
Area:
TDS
Groundwater
Concentrations­
Pre
and
Post
CCB
Placement
200
300
400
500
600
700
10/
1/
92
2/
13/
94
6/
28/
95
11/
9/
96
3/
24/
98
8/
6/
99
12/
18/
00
5/
2/
02
Groundwater
Sampling
Date
TDS
(
mg/
L)
Placement
Date
1­
YR
Post
Place.
3­
YR
Post
Place.
5­
YR
Post
Place.

Well
A­
4
Assumed
Down­
Gradient
Well
A­
6
Assumed
Up­
Gradient
MCL(
500)

Note
:
Groundwater
flow
direction
assumed
to
be
SSW
Prides
Creek
Mine
South
Area:
TDS
Groundwater
Concentrations
­
Pre
and
Post
CCB
Placement
200
300
400
500
600
700
800
900
1000
1100
1200
10/
1/
92
2/
13/
94
6/
28/
95
11/
9/
96
3/
24/
98
8/
6/
99
12/
18/
00
5/
2/
02
Groundwater
Sampling
Date
TDS
(
mg/
L)
Placement
Date
1­
YR
Post
Place.
3­
YR
Post
Place.
5­
YR
Post
Place.

Well
A­
1
Assumed
Down­
Gradient
MCL(
500)
A­
G­
3
Assumed
Up­
Gradient
Note
:
Groundwater
flow
direction
assumed
to
be
SSW
Pride's
Creek
Mine
Site
NW
Area:
Iron
Groundwater
Concentrations­
Pre
and
Post
CCB
Placement
0
1
2
3
4
5
6
7
8
9
10/
1/
92
2/
13/
94
6/
28/
95
11/
9/
96
3/
24/
98
8/
6/
99
12/
18/
00
5/
2/
02
Groundwater
Sampling
Date
Iron
(
mg/
L)
Placement
Date
1­
YR
Post
Place.
3­
YR
Post
Place.
5­
YR
Post
Place.

Well
A­
4
Assumed
Down­
Gradient
Well
A­
6
Assumed
Up­
Gradient
MCL
(
0.3)
Peak
at
10.67
Note
:
Groundwater
flow
direction
assumed
to
be
SSW
Prides
Creek
Mine
Site
South
Area:
Iron
Groundwater
Concentrations­
Pre
and
Post
CCB
Placement
0
1
2
3
4
5
6
7
8
9
10/
1/
92
2/
13/
94
6/
28/
95
11/
9/
96
3/
24/
98
8/
6/
99
12/
18/
00
5/
2/
02
Groundwater
Sampling
Date
Iron
(
mg/
L)
Placement
Date
1­
YR
Post
Place.
3­
YR
Post
Place.
5­
YR
Post
Place.

Well
A­
1
Assumed
Down­
Gradient
MCL
(
0.3)
Peak
at
20
A­
G­
3
Assumed
Up­
Gradient
Peak
at
15
Note
:
Groundwater
flow
direction
assumed
to
be
SSW
Prides
Creek
Mine
Site
NW
Area:
Cadmium
Groundwater
Concentrations­
Pre
and
Post
CCB
Placement
0
0.002
0.004
0.006
0.008
0.01
0.012
10/
1/
92
2/
13/
94
6/
28/
95
11/
9/
96
3/
24/
98
8/
6/
99
12/
18/
00
5/
2/
02
Groundwater
Sampling
Date
Cadmium
(
mg/
L)
Placement
Date
1­
YR
Post
Place.
3­
YR
Post
Place.
5­
YR
Post
Place.

Well
A­
4
Assumed
Down­
Gradient
Well
A­
6
Assumed
Up­
Gradient
MCL
(
0.005)

Note
:
Groundwater
flow
direction
assumed
to
be
SSW
Prides
Creek
Mine
Site
South
Area:
Cadmium
Groundwater
Concentrations­
Pre
and
Post
CCB
Placement
0
0.002
0.004
0.006
0.008
0.01
0.012
10/
1/
92
2/
13/
94
6/
28/
95
11/
9/
96
3/
24/
98
8/
6/
99
12/
18/
00
5/
2/
02
Groundwater
Sampling
Date
Cadmium
(
mg/
L)
Placement
Date
1­
YR
Post
Place.
3­
YR
Post
Place.
5­
YR
Post
Place.

MCL
(
0.005)
Well
A­
1
Assumed
Down­
Gradient
A­
G­
3
Assumed
Up­
Gradient
Note
:
Groundwater
flow
direction
assumed
to
be
SSW
Prides
Creek
Mine
NW
Area:
Manganese
Groundwater
Concentrations­
Pre
and
Post
CCB
Placement
0
0.02
0.04
0.06
0.08
0.1
0.12
0.14
10/
1/
92
2/
13/
94
6/
28/
95
11/
9/
96
3/
24/
98
8/
6/
99
12/
18/
00
5/
2/
02
Groundwater
Sampling
Date
Manganese
(
mg/
L)
Placement
Date
1­
YR
Post
Place.
3­
YR
Post
Place.
5­
YR
Post
Place.

Well
A­
4
Assummed
Down­
Gradient
MCL
(
0.05)
Well
A­
6
Assumed
Up­
Gradient
Note
:
Groundwater
flow
direction
assumed
to
be
SSW
Prides
Creek
Mine
South
Area:
Manganese
Groundwater
Concentrations­
Pre
and
Post
CCB
Placement
0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
0.4
0.45
0.5
10/
1/
92
2/
13/
94
6/
28/
95
11/
9/
96
3/
24/
98
8/
6/
99
12/
18/
00
5/
2/
02
Groundwater
Sampling
Date
Manganese
(
mg/
L)
Placement
Date
1­
YR
Post
Place.
3­
YR
Post
Place.
5­
YR
Post
Place.

MCL
(
0.05)
Well
A­
1
Assumed
Down­
Gradient
Well
A­
G­
3
Assumed
Up­
Gradient
Note
:
Groundwater
flow
direction
assumed
to
be
SSW
UNIVERSAL
MINE,
VIGO
COUNTY,
INDIANA
Site
Information
°
Former
surface
bituminous
mine,
semiarid
to
temperate
climate
°
Primary
purpose
­
site
reclamation
and
AMD
abatement
°
Fill
material
used
was
coal
ash
and
coal
gasification
slag
with
a
high
pH
(
9)

°
Dry
ash
placed
above
the
water
table
with
a
5­
foot
non­
compacted
soil
cap
with
vegetation
Groundwater
Information
°
Groundwater
monitoring
data
limited
prior
to
placement,
however,
approximately
fourteen
years
of
groundwater
monitoring
data
exists
for
this
site;
CBRC­
sponsored
study
now
underway.

°
Iron
concentrations
at
or
slightly
below
the
MCL
in
the
up­
gradient
and
down­
gradient
(
west)
well
but
above
the
MCL
in
the
down­
gradient
(
east)
well.

°
The
general
trend
for
manganese
in
the
down­
gradient
(
west)
well
appears
to
be
increasing,
but
in
the
downgradient
(
east)
well
it
appears
to
be
decreasing.

°
pH
level
in
the
down­
gradient
(
east)
well
increased
to
lower
MCL;
the
up­
and
down­
gradient
(
west)
well
have
remained
relatively
constant
between
the
upper
and
lower
MCLs.

°
TDS
in
up­
gradient
well
generally
below
MCL,
with
spikes
above
MCL;
TDS
for
down­
gradient
(
west)
well
is
at
or
above
the
MCL
with
gradual
increasing
trend;
TDS
for
down­
gradient
(
east)
well
is
above
MCL
with
gradual
decreasing
trend.

°
Sulfate
in
up­
gradient
well
below
the
MCL
with
a
spike
in
the
most
recent
data.
Sulfate
in
down­
gradient
(
west)
well
below
the
MCL
with
spikes
one
and
five
years
after
placement
and
in
most
recent
data.
Sulfate
in
down­
gradient
(
east)
well
above
the
MCL
since
placement.
Universal
Mine:
Mangenese
Groundwater
Concentrations­
Pre
and
Post
CCB
Placement
0.00
0.50
1.00
1.50
2.00
2.50
3.00
3.50
4.00
4.50
5.00
5/
1/
88
1/
26/
91
10/
22/
93
7/
18/
96
4/
14/
99
1/
8/
02
Groundwater
Sampling
Date
Mn
(
mg/
L)
Placement
Date
1­
YR
Post
Place.
3­
YR
Place.
5­
YR
Place.

Peak
at
5.6
Monitoring
Well
#
3
Down­
Gradient
(
east)

Monitoring
Well
#
1
Down­
Gradient
(
west)
Monitoring
Well
#
4
Up­
Gradient
MCL
(
0.05)
Universal
Mine:
Groundwater
pH
Levels
­
Pre
and
Post
CCB
Placement
5.00
5.50
6.00
6.50
7.00
7.50
8.00
8.50
9.00
5/
1/
88
1/
26/
91
10/
22/
93
7/
18/
96
4/
14/
99
1/
8/
02
Groundwater
Sampling
Date
pH
Placement
Date
1­
YR
Post
Place.
3­
YR
Place.
5­
YR
Place.

Monitoring
Well
#
3
Down­
Gradient
(
east)
Monitoring
Well
#
1
Down­
Gradient
(
west)
Monitoring
Well
#
4
Up­
Gradient
Upper
Limit
MCL
Lower
limit
MCL
Universal
Mine:
Groundwater
Iron
(
Fe)
Concentrations
­
Pre
and
Post
CCB
Placement
0.00
5.00
10.00
15.00
20.00
25.00
30.00
5/
1/
88
9/
13/
89
1/
26/
91
6/
9/
92
10/
22/
93
3/
6/
95
7/
18/
96
11/
30/
97
4/
14/
99
8/
26/
00
1/
8/
02
Groundwater
Sampling
Date
Fe
(
mg/
L)
Placement
Date
1­
YR
Post
Place.
3­
YR
Place.
5­
YR
Place.

Peak
at
44
Monitoring
Well
#
3
Down­
Gradient
(
east)

Monitoring
Well
#
1
Down­
Gradient
(
west)
Monitoring
Well
#
4
Up­
Gradient
MCL
(
0.3)

Universal
Mine:
Groundwater
Total
Dis.
Solids
(
TDS)
Levels­
Pre
and
Post
CCB
Placement
0
500
1000
1500
2000
2500
3000
3500
4000
5/
1/
88
1/
26/
91
10/
22/
93
7/
18/
96
4/
14/
99
1/
8/
02
Groundwater
Sampling
Date
TDS
(
mg/
l)
Placement
Date
1­
YR
Post
Place.
3­
YR
Place.
5­
YR
Place.

Monitoring
Well
#
3
Down­
Gradient
(
east)

Monitoring
Well
#
1
Down­
Gradient
(
west)
Monitoring
Well
#
4
Up­
Gradient
MCL
(
500)
Spike
11,000
Universal
Mine:
Groundwater
Sulfate
(
SO4)
Concentrations
­
Pre
and
Post
CCB
Placement
0
500
1000
1500
2000
2500
3000
5/
1/
88
1/
26/
91
10/
22/
93
7/
18/
96
4/
14/
99
1/
8/
02
Groundwater
Sampling
Date
SO4(
mg/
L)
Placement
Date
1­
YR
Post
Place.
3­
YR
Place.
5­
YR
Place.

Monitoring
Well
#
3
Down­
Gradient
(
east)

Monitoring
Well
#
1
Down­
Gradient
(
west)
Monitoring
Well
#
4
Up­
Gradient
MCL
(
250)
VIKING
MINE,
DAVIESS
COUNTY,
INDIANA
Site
Information
°
Active
surface
bituminous
mine,
temperate
to
humid
climate
°
Primary
purpose
­
not
defined
in
available
file
materials
°
Fly
ash,
bottom
ash,
FGD
by­
products,
Poz­
O­
Tec
(
fly
ash/
FGD
mix)
from
five
different
sources
°
Ash
placed
within
spoils
in
inactive
areas
of
mine
below
the
water
table
Groundwater
Information
°
Pre­
placement
groundwater
monitoring
data
not
available.
Seven
years
of
post­
placement
data.

°
Iron
concentrations
above
MCL
in
the
shallow
well;
at
or
below
MCL
in
the
bedrock
wells.

°
Manganese
concentrations
have
varied,
generally
staying
above
the
MCL.
The
general
trend
are
decreasing
concentrations
approaching
the
MCL
in
the
shallow
well
and
at
the
MCL
in
the
bedrock
wells.

°
Total
Dissolved
Solids
(
TDS)
is
generally
above
MCLs,
generally
are
unchanged
since
placement
with
higher
levels
in
the
bedrock
wells.

°
Zinc
concentrations
have
been
at
or
slightly
above
the
MCL
except
for
a
spike
approximately
4
years
after
placement.

°
pH
levels
have
remained
between
the
upper
and
lower
MCL
limits,
with
a
general
trend
toward
the
upper
limit
in
the
bedrock
wells.
Viking
Mine:
Groundwater
pH
Levels
­
Pre
and
Post
CCB
Placement
6
6.5
7
7.5
8
8.5
9
01/
01/
96
05/
15/
97
09/
27/
98
02/
09/
00
06/
23/
01
Groundwater
Sampling
Date
pH
Placement
Date
1­
YR
Post
Place.
3­
YR
Post
Place.
5­
YR
Post
Place.

Lower
Limit
­
Secondary
MCL
(
6.5)
MW­
6A
(
Shallow
Well)

MW­
6B
(
Bedrock
Well)
Upper
Limit
­
Secondary
MCL
(
6.5)
MW­
7
(
Bedrock
Well)

Viking
Mine:
Groundwater
TDS
Concentrations
­
Pre
and
Post
CCB
Placement
0
200
400
600
800
1000
1200
1400
1600
01/
01/
96
05/
15/
97
09/
27/
98
02/
09/
00
06/
23/
01
Groundwater
Sampling
Date
TDS
(
mg/
l)
Placement
Date
1­
YR
Post
Place.
3­
YR
Post
Place.
5­
YR
Post
Place.

MCL
(
500)
MW­
6A
(
Shallow
Well)
MW­
6B
(
Bedrock
Well)
MW­
7
(
Bedrock
Well)
Viking
Mine:
Groundwater
Manganese
Concentrations
­
Pre
and
Post
CCB
Placement
0
0.5
1
1.5
2
2.5
3
3.5
01/
01/
96
05/
15/
97
09/
27/
98
02/
09/
00
06/
23/
01
Groundwater
Sampling
Date
Mn
(
mg/
l)
Placement
Date
1­
YR
Post
Place.
3­
YR
Post
Place.
5­
YR
Post
Place.

MCL
(
0.05)
MW­
6A
(
Shallow
Well)

MW­
6B
(
Bedrock
Well)
MW­
7
(
Bedrock
Well)

Viking
Mine:
Groundwater
Zinc
Levels
­
Pre
and
Post
CCB
Placement
0
200
400
600
800
1000
1200
1400
1600
01/
01/
96
05/
15/
97
09/
27/
98
02/
09/
00
06/
23/
01
Groundwater
Sampling
Date
Zinc
(
mg/
l)
Placement
Date
1­
YR
Post
Place.
3­
YR
Post
Place.
5­
YR
Post
Place.

MCL
(
5)
MW­
6A
(
Shallow
Well)
MW­
6B
(
Bedrock
Well)

MW­
7
(
Bedrock
Well)
Viking
Mine:
Groundwater
Iron
Concentrations
­
Pre
and
Post
CCB
Placement
0
5
10
15
20
25
30
01/
01/
96
05/
15/
97
09/
27/
98
02/
09/
00
06/
23/
01
Groundwater
Sampling
Date
Iron
(
mg/
l)
Placement
Date
1­
YR
Post
Place.
3­
YR
Post
Place.
5­
YR
Post
Place.

MCL
(
0.3)
MW­
6A
(
Shallow
Well)

MW­
6B
(
Bedrock
Well)
MW­
7
(
Bedrock
Well)
B­
D
MINE,
SCHUYKILL
COUNTY,
PENNSYLVANIA
Site
Information
°
Active
surface
anthracite
mine,
temperate
to
humid
climate
°
Primary
purpose
­
site
reclamation
°
Fly
ash
and
FBC
from
Gilberton
Power
Co.,
Panther
Creek
Partners,
UGI­
Hunlock,
AES
Thames,
Inc.,
and
the
Logan
(
Keystone)
Generating
Plant.

°
Ash
mixed
with
water
to
achieve
100%
compaction
°
Ash
placed
above
water
table
with
no
liner
Groundwater
Information
°
Groundwater
sampling
data
available
4
years
pre­
placement
and
11
years
post
placement.

°
Manganese
in
both
wells
was
above
MCL
prior
to
placement
but
has
decreased
in
the
upgradient
well
to
close
to
the
MCL
and
has
only
decreased
slightly
in
the
downgradient
well.

°
Iron
in
both
wells
prior
to
placement
were
above
MCL.
Since
placement,
iron
in
the
upgradient
well
has
decreased
to
close
to
MCL,
with
a
spike
observed
when
MP­
8
was
first
sampled,
and
has
remained
relatively
constant
in
the
downgradient
well.

°
TDS
were
above
the
MCL
prior
to
placement
in
both
wells.
Since
placement,
TDS
decreased
to
below
MCL
in
the
upgradient
well
and
remained
relatively
constant
in
the
downgradient
well.

°
pH
in
both
wells
was
below
lower
MCL
limit
prior
to
placement
and
has
remained
relatively
unchanged.
B­
D
Mine
Site:
Groundwater
pH
Levels
­
Pre
and
Post
CCB
Placement
3.5
4
4.5
5
5.5
6
6.5
7
07/
01/
88
03/
28/
91
12/
22/
93
09/
17/
96
06/
14/
99
03/
10/
02
Groundwater
Sampling
Date
pH
Placement
Date
1­
YR
Post
Place.
3­
YR
Post
Place.
5­
YR
Post
Place.

Lower
Limit
­
Secondary
MCL
(
6.5)

Up­
gradient
MP­
7
Down
Gradient
MW­
8
(
MW­
7
replacement)

B­
D
Mine
Site:
GroundwaterTotal
Dissolved
Solids
(
TDS)
­
Pre
and
Post
CCB
Placement
0
200
400
600
800
1000
1200
07/
01/
88
03/
28/
91
12/
22/
93
09/
17/
96
06/
14/
99
03/
10/
02
Groundwater
Sampling
Date
TDS(
mg/
l)
Placement
Date
1­
YR
Post
Place.
3­
YR
Post
Place.
5­
YR
Post
Place.

MCL
(
500)
Up­
gradient
MP­
7
&
MP­
8
(
MP­
7
replacement)
Down
Gradient
B­
D
Mine
Site:
Groundwater
Iron
(
Fe)
Concentrations
­
Pre
and
Post
CCB
Placement
0
20
40
60
80
100
120
140
160
07/
01/
88
03/
28/
91
12/
22/
93
09/
17/
96
06/
14/
99
03/
10/
02
Groundwater
Sampling
Date
Fe
(
mg/
l)
Placement
Date
1­
YR
Post
Place.
3­
YR
Post
Place.
5­
YR
Post
Place.

MCL
(
0.3)
Up­
gradient
MP­
7
Down
Gradient
MP­
6
MP­
8
(
MP­
7
replacement)

B­
D
Mine
Site:
Groundwater
Manganese
(
Mn)
Concentrations­
Pre
and
Post
CCB
Placement
0
2
4
6
8
10
12
07/
01/
88
03/
28/
91
12/
22/
93
09/
17/
96
06/
14/
99
03/
10/
02
Groundwater
Sampling
Date
Mn(
mg/
l)
Placement
Date
1­
YR
Post
Place.
3­
YR
Post
Place.
5­
YR
Post
Place.

MCL
(
0.05)
Up­
gradient
MP­
7
Down
Gradient
MP­
6
MP­
8
(
MP­
7
replacement)
BIG
GORILLA
DEMONSTRATION
PROJECT,
SCHUYLKILL
COUNTY,
PENNSYLVANIA
Site
Information
°
Former
surface
anthracite
mine,
temperate
to
humid
climate
°
Primary
purpose
­
site
reclamation
and
AMD
abatement
°
Fluidized
bed
combustion
(
FBC),
dry
ash,
and
bottom
ash
from
NEPCO
Co.

°
No
other
material
added
to
the
ash
°
Dry
ash
placed
directly
into
standing
water
in
the
mine
pit
°
No
cap
or
liner
used
to
prevent
rain
infiltration
or
the
release
of
leachate
Groundwater
Information
°
Groundwater
monitoring
data
available
for
4
years
pre­
placement
and
5
years
post­
placement.

°
Cadmium
concentrations
above
the
MCL
prior
to
placement;
since
then
have
decreased
to
below
the
MCL.

°
Iron
and
manganese
concentrations
above
the
MCL
prior
to
placement;
3
years
post
placement
­
still
above
the
MCL
at
higher
levels.

°
Up­
gradient
pH
levels
remained
between
5
and
5.5
before
and
after
the
placement;
down­
gradient
pH
was
between
3
and
4
before
placement
and
has
since
risen
to
between
4
and
4.5
after
placement.
Big
Gorilla
Mine:
Groundwater
pH
Levels
­
Pre
and
Post
CCB
Placement
3
3.5
4
4.5
5
5.5
6
6.5
7
1/
31/
93
6/
15/
94
10/
28/
95
3/
11/
97
7/
24/
98
12/
6/
99
4/
19/
01
9/
1/
02
Groundwater
Sampling
Date
pH
Placement
Date
1­
YR
Post
Place.
3­
YR
Post
Place.
5­
YR
Post
Place.

Lower
Limit
­
Secondary
MCL
(
6.5)

Silverbrook
­
Down
Gradient
Up­
gradient
MW
­
2
Big
Gorilla
Mine:
Cadmium
Concentrations
­
Pre
and
Post
CCB
Placement
0.000
0.002
0.004
0.006
0.008
0.010
0.012
6/
1/
93
10/
14/
94
2/
26/
96
7/
10/
97
11/
22/
98
4/
5/
00
8/
18/
01
12/
31/
02
Groundwater
Sampling
Date
Cd
(
mg/
L)
Placement
Date
1­
YR
Post
Place.
3­
YR
Post
Place.
5­
YR
Post
Place.

Silverbrook­
Down
Gradient
MCL
(
0.005)
Note:
Values
for
MW­
2
&
Silverbrook
are
below
lab
detection
limit
(
0.010)
which
is
above
the
MCL
Up­
gradient
MW
­
2
Big
Gorilla
Mine:
Groundwater
Manganese
Concentrations­
Pre
and
Post
CCB
Placement
0
0.5
1
1.5
2
2.5
3
1/
31/
93
6/
15/
94
10/
28/
95
3/
11/
97
7/
24/
98
12/
6/
99
4/
19/
01
9/
1/
02
Groundwater
Sampling
Date
Mn
(
mg/
l)
Placement
Date
1­
YR
Post
Place.
3­
YR
Post
Place.
5­
YR
Post
Place.

MCL
(
0.05)
Up­
gradient
MW
­
2
Silverbrook
­
Down
Gradient
Silverbrook
data
spike
(
12.5mg/
l)

Big
Gorilla
Mine:
Groundwater
Iron
Concentrations
­
Pre
and
Post
CCB
Placement
0
5
10
15
20
25
1/
31/
93
6/
15/
94
10/
28/
95
3/
11/
97
7/
24/
98
12/
6/
99
4/
19/
01
9/
1/
02
Groundwater
Sampling
Date
Fe
(
mg/
l)
Placement
Date
1­
YR
Post
Place.
3­
YR
Post
Place.
5­
YR
Post
Place.

MCL
(
0.3)
Silverbrook
­
Down
Gradient
Silverbrook
data
spike
(
38
mg/
l)

Up­
gradient
MW
­
2
MAPLE
COAL
SITE,
CAMBRIA
COUNTY,
PENNSYLVANIA
Site
Information
°
Inactive
surface
bituminous
mine,
temperate
to
humid
climate
°
Primary
purpose
­
site
reclamation
and
reduction
of
AMD
°
Refuse
("
gob")
pile
used
as
fuel
for
Colver
Fluidized
Bed
Combustion
(
FBC)
Power
Plant
since
1995.

°
FBC
ash
from
Colver
Plant;
FBC
ash
blended
with
rejected
material
from
refuse
pile
and
placed
above
the
water
table
Groundwater
Information
°
Four
years
of
pre­
placement
groundwater
data
and
seven
years
of
post­
placement
groundwater
data
°
Pre­
placement
pH
levels
between
2.5
and
5
for
down­
gradient
and
at
or
near
the
MCL
for
the
up­
gradient.

Post­
placement
data
shows
stable
pH
levels
for
down­
gradient
wells
and
a
slight
decrease
below
the
lower
MCL
limit
for
the
up­
gradient
well.

°
Pre­
placement
groundwater
data
shows
elevated
levels
above
MCLs
for
total
dissolved
solids
(
TDS),

cadmium,
iron,
manganese,
and
sulfate
in
both
down­
gradient
wells
and
chromium
and
arsenic
in
one
down­
gradient
well,
prior
to
placement.

°
Up­
gradient
well
at
or
below
the
MCL
for
all
monitored
constituents,
pre­
and
post­
placement;
since
placement,
TDS,
arsenic,
manganese,
iron,
cadmium,
chromium,
and
sulfate
concentrations
have
declined.

Of
these
constituents,
cadmium
and
chromium
declined
to
at
or
below
MCLs
in
both
wells
and
arsenic
and
manganese
in
one
down­
gradient
well.
Maple
Creek
Coal
Mine
Site:
Groundwater
pH
­
Pre
and
Post
CCB
Placement
0
1
2
3
4
5
6
7
8
9
10
05/
07/
90
09/
19/
91
01/
31/
93
06/
15/
94
10/
28/
95
03/
11/
97
07/
24/
98
12/
06/
99
04/
19/
01
09/
01/
02
Groundwater
Sampling
Date
pH
Placement
date
1­
YR
Place.
3­
YR
Place.
5­
YR
Place.

MW­
2
Down­
Gradient
Well
MW­
1
Up­
Gradient
Well
MW­
3
Down
Gradient
Well
Lower
MCL
(
6.5)
Upper
MCL
(
8.5)

Maple
Creek
Coal
Mine
Site:
TDS
Groundwater
Concentrations
­
Pre
and
Post
CCB
Placement
0
2000
4000
6000
8000
10000
12000
14000
05/
07/
90
09/
19/
91
01/
31/
93
06/
15/
94
10/
28/
95
03/
11/
97
07/
24/
98
12/
06/
99
04/
19/
01
09/
01/
02
Groundwater
Sampling
Date
TDS
(
mg/
L)
Placement
date
1­
YR
Place.
3­
YR
Place.
5­
YR
Place.

MW­
2
Down­
Gradient
Well
MW­
1
Up­
Gradient
Well
MW­
3
Down
Gradient
Well
MCL
(
500)
Maple
Creek
Coal
Mine
Site:
Arsenic
Groundwater
Concentrations
­
Pre
and
Post
CCB
Placement
0
0.2
0.4
0.6
0.8
1
1.2
05/
07/
90
09/
19/
91
01/
31/
93
06/
15/
94
10/
28/
95
03/
11/
97
07/
24/
98
12/
06/
99
04/
19/
01
09/
01/
02
Groundwater
Sampling
Date
Arsenic
(
mg/
L)
Placement
date
1­
YR
Place.
3­
YR
Place.
5­
YR
Place.

MW­
2
Down­
Gradient
Well
MW­
1
Up­
Gradient
Well
MW­
3
Down
Gradient
Well
MCL
(
0.01)

Maple
Creek
Coal
Mine
Site:
Cadmium
Groundwater
Concentrations
­
Pre
and
Post
CCB
Placement
0
0.02
0.04
0.06
0.08
0.1
0.12
0.14
12/
23/
88
05/
07/
90
09/
19/
91
01/
31/
93
06/
15/
94
10/
28/
95
03/
11/
97
07/
24/
98
12/
06/
99
04/
19/
01
09/
01/
02
Groundwater
Sampling
Date
Cadmium
(
mg/
L)
Placement
date
1­
YR
Place.
3­
YR
Place.
5­
YR
Place.

MW­
2
Down­
Gradient
Well
MW­
1
Up­
Gradient
Well
MW­
3
Down­
Gradient
Well
MW­
3
Peak
at
0.52
MW­
2
Peak
at
0.48
MCL
(
0.005)
Maple
Creek
Coal
Mine
Site:
Chromium
Groundwater
Concentrations
­
Pre
and
Post
CCB
Placement
0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
0.4
0.45
05/
07/
90
09/
19/
91
01/
31/
93
06/
15/
94
10/
28/
95
03/
11/
97
07/
24/
98
12/
06/
99
04/
19/
01
09/
01/
02
Groundwater
Sampling
Date
Chromium
(
mg/
L)
Placement
date
1­
YR
Place.
3­
YR
Place.
5­
YR
Place.

MW­
2
Down­
Gradient
Well
MW­
1
Up­
Gradient
Well
MW­
3
Down
Gradient
Well
MCL
(
0.1)

Maple
Creek
Coal
Mine
Site:
Iron
Groundwater
Concentrations
­
Pre
and
Post
CCB
Placement
0
1000
2000
3000
4000
5000
6000
05/
07/
90
09/
19/
91
01/
31/
93
06/
15/
94
10/
28/
95
03/
11/
97
07/
24/
98
12/
06/
99
04/
19/
01
09/
01/
02
Groundwater
Sampling
Date
Iron
(
mg/
L)
Placement
date
1­
YR
Place.
3­
YR
Place.
5­
YR
Place.

MW­
2
Down­
Gradient
Well
MW­
1
Up­
Gradient
Well
MW­
3
Down
Gradient
Well
MCL
(
0.3)
Maple
Creek
Coal
Mine
Site:
Manganese
Groundwater
Concentrations
­
Pre
and
Post
CCB
Placement
0
100
200
300
400
500
05/
07/
90
09/
19/
91
01/
31/
93
06/
15/
94
10/
28/
95
03/
11/
97
07/
24/
98
12/
06/
99
04/
19/
01
09/
01/
02
Groundwater
Sampling
Date
Manganese
(
mg/
L)
Placement
date
1­
YR
Place.
3­
YR
Place.
5­
YR
Place.

MW­
2
Down­
Gradient
Well
MW­
1
Up­
Gradient
Well
MW­
3
Down
Gradient
Well
MCL
(
0.05)
Peak
at
1800
Maple
Creek
Coal
Mine
Site:
Sulfate
Groundwater
Concentrations
­
Pre
and
Post
CCB
Placement
0
2000
4000
6000
8000
10000
12000
14000
05/
07/
90
09/
19/
91
01/
31/
93
06/
15/
94
10/
28/
95
03/
11/
97
07/
24/
98
12/
06/
99
04/
19/
01
09/
01/
02
Groundwater
Sampling
Date
Sulfate
(
mg/
L)
Placement
date
1­
YR
Place.
3­
YR
Place.
5­
YR
Place.

MW­
2
Down­
Gradient
Well
MW­
1
Up­
Gradient
Well
MW­
3
Down
Gradient
Well
MCL
(
250)
REVLOC
REFUSE
SITE,
CAMBRIA
COUNTY,
PENNSYLVANIA
Site
Information
°
Inactive
surface
bituminous
mine,
temperate
to
humid
climate
°
Site
reclamation
and
reduction
of
AMD
°
Refuse
(
spoils)
pile
used
as
fuel
source
for
Edenburg
Power
°
FBC
ash
from
Edenburg
Power
°
FBC
ash
placed
below
the
water
table
in
monofill
layers
°
FBC
ash
blended
with
rejected
material
from
refuse
pile
and
placed
above
the
water
table
Groundwater
Information
°
Groundwater
sampling
data
available
3
years
pre­
placement
and
12
years
post­
placement.

°
TDS
before
placement
above
MCL;
since
placement
below
MCL
and
close
to
background
level
°
Arsenic
before
placement
above
MCL;
approximately
5
years
after
placement
below
MCL
and
close
to
background
level
°
Iron
before
placement
above
MCL;
spiked
during
placement;
reduced
in
time
to
close
to
MCL,
but
still
above
background
°
pH
during
mining
very
acidic;
pre­
and
post­
placement
the
pH
has
not
greatly
changed.
Revloc
Mine
Site:
Groundwater
pH
­
Pre
and
Post
CCB
Placement
­

2
3
4
5
6
7
6/
1/
87
2/
25/
90
11/
21/
92
8/
18/
95
5/
14/
98
2/
7/
01
Groundwater
Sampling
Date
pH
Placement
Date
1­
YR
Post
Place.
3­
YR
Post
Place.
5­
YR
Post
Place.

Lower
Limit
­
Secondary
MCL
Well
#
1
Down­
gradient
Well
#
2
Background
Revloc
Mine:
Groundwater
Total
Dissolved
Soilids
(
TDS)
Levels
­
Pre
and
Post
CCB
Placement
0
200
400
600
800
1000
1200
1400
1600
1800
6/
1/
87
2/
25/
90
11/
21/
92
8/
18/
95
5/
14/
98
2/
7/
01
Groundwater
Sampling
Date
TDS
(
mg/
l)
Placement
Date
1­
YR
Post
Place.
3­
YR
Post
Place.
5­
YR
Post
Place.

MCL(
500)
Well
#
1
Down­
gradient
Well
#
2
Background
Revloc
Mine:
Groundwater
Arsenic
Concentrations
­
Pre
and
Post
CCB
Placement
0.5
2.5
4.5
6.5
8.5
10.5
6/
1/
87
2/
25/
90
11/
21/
92
8/
18/
95
5/
14/
98
2/
7/
01
Groundwater
Sampling
Date
Arsenic
(
ppb)
Placement
Date
1­
YR
Post
Place.
3­
YR
Post
Place.
5­
YR
Post
Place.

MCL
(
5
ppb)
Well
#
1
Down­
gradient
Well
#
2
Background
Down­
gradient
Max
217
ppb
Background
Max
21.5
ppb
Revloc
Mine
Site:
Groundwater
Iron
Concentrations
­
Pre
and
Post
CCB
Placement
­
5
45
95
145
195
245
6/
1/
87
2/
25/
90
11/
21/
92
8/
18/
95
5/
14/
98
2/
7/
01
Groundwater
Sampling
Date
Fe
(
mg/
l)
Placement
Date
1­
YR
Post
Place.
3­
YR
Post
Place.
5­
YR
Post
Place.

MCL
(
0.3mg/
l)
Well
#
1
Down­
gradient
Well
#
2
Background
Max
394
mg/
l