8/11/2019 PROPOSED PLAN Madison Metropolitan Sewerage District Superfund Site
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EPA
United States
Environmental Protection
Agency
Officeof
Public Affairs
Region5
77 Wes t Jackson Blvd.
Chicago, IL 60604
Illinois
Indiana
Michigan
Minnesota
Ohio
Wisconsin
;f 1
3
EPA
Region5 Records Ctr.
Public
Comment Period
235637
U.S.
EPA
w i l l
accept
w r i tt e n
comments
on the
Proposed
Plan dur inga30-day p u b l i ccomment period from
November
18
through
December 18 ,
1996.
PublicMeeting
U.S. EPAw i l l hold apub l ic meet ing toexpla in th e
Proposed
Plan and the other cleanup alternat ives
consid-
ered
for the
site. Oral
and
writ ten commentsw i l l
b e
acceptedat the mee t ing .
e:
Time:
Place:
Tuesday,
No vember
19 ,
1996
7
p.m.
Madiso n
Mun i c i pa l
B u i l d i n g
R o o m L L l l O
215
Mart in Luther King,
Jr .
Boulevard
Madison, Wisconsin
PROPOSEDPLAN
Madison
Metropolitan
Sewerage
District
Superfund Site
BloomingGrove,
Wisconsin
November
1996
Introduction
This Proposed Plan
identifies
the U.S.
Environmental Protection Agen cy (U.S. EPA)
cleanup recommendation
for the
Madison
Metropolitan Sewerage District Superfund site
(Madison M etro site)
in
Blooming Grove,
Wisconsin(Figure 1). U.S.EPA isproposing
Remedial Alternative 4(RA-4), w hich w ould
includeconstru cting dikes, consolidating con-
taminated
sludge,
an d
covering
the
sludge
wi th
anapprov ed cap. Itw ould a lso include
monitoring
and
m aintenance activit ies
and
future deed restrictions. U.S. EPA's recom-
mendat ion
is
based
on
information collected
dur ingthesite remedial investigation/feasibil-
ity study(RI/FS)and a riskassessment,
which evaluated potential
health r isks
posed
by site contamination
1
.
Public input on theal ternat ives and the infor-
mat ion
t h a t supportsthesealternativ es is an
important
contribut ion to the
cleanupremedy
select ion process. Based
on new
information
or p u b l i c comment .U.S .EPA m ay modify
the recommended
al ternat ive orselect
anoth-
1
Section 117 a)
of theComprehensive Environmental
Response.
Compensation,a na
Liao- i
ty A ci
iCERCLA) requires publication
o f a
nonce
and a
Proposed Plan for possible site remediation . Tne Propo sed Plan mustalso be made available to t^e public for com me nt Tnis Proposed Plan is a summary
of in format ionincludedin the
Feasibility
Study Report Septem ber 1996) and other docum ents .n the
Aa m m i s t r a t i ve
Reco rd for the site Please consult the
FeasibilityStudy Report a long
w th the
Admin is t r a t i ve Reco
r
?
for the
si te,
f or
more deta i led rfo
r
rra:
on
- _ l
/
Treatment
| | ^ s . Plant Facilities
8/11/2019 PROPOSED PLAN Madison Metropolitan Sewerage District Superfund Site
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eralternativepresentedin this
planand/or
the FSReport. The
publicisencouraged toreview
andcomment on all technolo-
gies
andalternatives considered
for th e
Madison Metro site.
SiteBackground
The
Madison Metro site con-
sistsof two lagoons that cover
approximately 140acres. The
lagoons were constructed in the
1940sand
1960s
to
provide
storageforsew erage s ludge
generated
at the
plan t . N ine
Spr ings Creek f lows along th e
south and east site borders.
Several drainage ditches run
along other site borders and
empty in to
the
creek.
T he
sludge lagoon system
at
the s i te operated w ithou t prob-
lems
un t i l
April 1970, when
part of the Lagoon 2 dike col-
lapsed, releas ing about
85
m i l -
l ion gal lon s of the lagoon's
conten ts to an adjacent d i tch .
The Dis t r ic t subsequ ent ly
repaired thed ike .
N a t i o n w i d e concern arose
abou t
thepoten t i a l
adverse
env i ronmenta l and
hea l th
effects of po lych lor ina ted
b i p hen y l s( PCBs) .
w h i ch
had
been found in
m u n i c i p a l s lu d g e
in otherc o m m u n i t i e s . T h i s
concern led theS e w e r ag e
Dis t r i c t
to beg in v o l u n t a r i l y
a n a l v / i n i i i t s
.sludge
forP C B s .
In late 1982, duringaroutine
analysis
of lagoon sludges, the
District detected PC B concen-
trations above
50
parts
per
mi l -
l ion (ppm), th e legal l imit
allowed by the federal Toxic
Substances Control
A ct
(TSCA).
Because th e District sold
processed
s ludgea s aferti l izer
andsoilcondi tioner through
its
Metrogro program,sludges
containing
PCB
concentrat ions
above50 ppm were separated
to prevent their use in the pro-
gram. Farmers co nt in ue to use
Metrogro sludge
as a
fer t i l izer ,
butal l s ludge used is w ith in the
regulatory
l imit (below 50
p p m )
for PCB
content .
Hazard assessments conducted
by
U.S.
EPA in
1983
an d
1986
determined lagoon s ludge s
posed a potentia l threat to pu b-
l ic heal th
and the
e n v i r o n m e n t .
In 1990,
th e
site
w as
placed
on
U.S. EPA's Nat iona lPr ior i t ies
List( N P L ) ,aroster ofhaz-
ardous w as tes i tes e l ig ib l e for
c l ean u p u n d e r the federal
Super fund
p r o g r a m .
In
J an u a r y
1992, U.S . EPA and
the Dis tr ic t s igned an
agree-
m e n t ,
ca l led a Consen t Order ,
r e q u i r i n g
the
Dis t r i c t
toc o m -
p le te
a s t u d > d e f i n i n g the
ex t en t o f con t amina t ion ( an RI )
for the
s i t e , f o l l owed
bv a
f e a -
sibil i ty study (FS) to evaluate
possible cleanup opt ions.
After
th e
Distr ict comp leted
the first
round
of RI
sampling,
U.S. EPArequested ad dit iona l
sampl ing
and
monitor ing
to
more ful ly def ine s i te condi-
tions.
Thesetwo
separate sam-
pl ing
eventsarereferred to as
Phase
I and
Phase
II of the RI.
All U.S. EPA comments and
data produced from Phase I and
Phase
II
were incorporated into
the final R I repor t , whichw as
submit ted
to
U.S.
EPA in
September 1996.
The RI
indicated that PCBs
were present in Lagoons 1 and
2 at
concentrat ions ran ging
from
1.1 to 17 0
p p m .
The
h ighes t leve l s w ere de tec tedin
the nor thw es t co rner of Lagoon
2,
w h e re
the
Dis t r ic t
had
at tempted tosegregate s ludge s
w i t h the
h i g hes t
PCB
co ncen -
t ra t ions .
L ow leve l sof vo la t i l e
organicco m po unds ( VO Cs) ,
one
semiv o la t i l e o r gan ic co m-
pound (SVOC) , pes t ic ides ,and
severa l m e t a l s w e r e a l s o
detected in s a m p l e sco l lec ted
from
L a g o o n s
1 and 2.
The RIalsoprov ided thef o l -
l o w i n g in fo rma t io n :
P C B s w e r ede tec ted i n t w o
ot f ive pea t s am p lesfrom
the
bot tom of the lagoons ,
b e n e a t h
the
s l u d g e .
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Relatively low levels of
VOCs,
one
SVOC, pesti-
cides, and several metals
were
alsodetected in peat
samples.
PCBs,oneVOC,andsever-
al metals w ere detected
at
low levels in all three
lagoon sludge samples.
Lowlevelsof one VOC and
several metals were detected
in
ground-water
samples.
Low
levels
of
PCBs
were
detected instream sedim ent
samples.
Following
the RI, the
District
conducted
a risk assessment.
The risk
assessment consisted
of ahum an heal th evaluat ion
and an
ecological assessmen t,
whichw ere used
to
assess re a-
sonably anticipated
future
site
w i t h regard
to
_ ian healthand ecological
risks. The District submitted
th e final risk assessment report
to U.S.EPA inSeptember
1996.
The FS focused on the portions
of the s i te conta in ing
s ludge
wi th PCB
concen trations
at or
greater
than 50 p p m . Dur ing
the
FS. 10cleanup a l ternat ives
for th i s s ludge w eredeve loped
and
eva lua ted ,
us ing the n in e
e v a l u a t i on criteria l i s ted in
Figure2.
U.S.
EPA has deter-
mined that
other
sludges,w i th
PCB
concentrations below
50
ppm,can be safely managed
throughaland application pro-
gram.
Summary
of
Site
Rsks
U.S. EPA is concerned abou t
elevated
concentrations of
PCBs at the Madison Me tro
site
because long-term expo-
suretoPCBs at
those
concen-
trations
could have adverse
effects
onhum an heal thand
th eenvi ronment . D ur ingthe
RI/FS,
U.S.
EPA determined
that
sludge
hasbeen
adequately
containedin the lagoon system
an d
does
notposerisks to
humanhealth; how ever, con-
servative assumptions indicate
thatexposuretosludge con-
ta in ing
PCBconcen trations
above 50 ppm could pose an
ecological
risk to
area
wi ld l i f e .
PCBs canonl y have adverse
effects
through exposure,
such
astouchingcontaminated
s ludgeor
soi l , ing est ing con ta-
minated
part icles,
or
i n h a l i n g
organic
vapors . Al ternat ives
developed
for s i te c lean up
inc ludem easures
to
reduce
o r
e l i m i n a t e the
p o s s i b i l i t y
of
exposure
to
site
con tam i n an t s .
Summary of Alternatives
As
part
of theRI/FS,U.S. EPA
identif ied and
evaluated alter-
native s that could
be
used
to
address threats or potential
threats posed by the site.
U.S.
EPAconsidered 10c l eanup
action alternativesfor the site:
N o Action (RA-1)
RA- 1 involvesnoact ive
cleanup
or long-term manage-
men t at the
site.
A
No-Act ion
alternative is
required
by law to
give
U.S.EPA abasisfo rcom-
parison.
Est imated
Cost: 0
Institutional
Controls (RA-2)
RA -2 involves dike construc-
t ion to isolate andconsol idate
s ludge containing PCB concen-
t ra t ions
at or
above
50
p p m .
This
would facil i tate
future
remova l and land appl icat ion
act iv i t ies
fo r
sludges contain-
ing
concentrat ions below
50
ppm. This alternative also
i nvo lves the continuation of
current
rout inea ct iv i t i es,
i n c l u d i n gs ludge managemen t ,
main tenance
of
exis t ing ,natur-
al vegetat ive
cover ,
d i ke
mon i -
tor ing and mainten ance,
ground-w a te r moni to r ing , and
deed
restr ict ions
on future site
use .
Est ima ted Cost: S425.000
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BeneficialReuse(RA-3)
RA-3 invo lves
a
special PCB-
handling approach
to
remove
s ludgew i th
PCB concentrat ions
at
or
above
50 ppm and
recycle
th e
s ludge
for
agricu l tura l use.
Estimated
Cost:
8.8 M ill io n
In-PlaceCapping
(RA-4)
RA-4 inv olve s dike construc-
tionto
isolate
and
consolidate
sludge containing PCB concen-
trations
at or
above
50
ppm.
Lagoon
areasnot
already cov-
ered by natural vegetation
w o u l d then be covered with soil
and
seeded. This alternative
alsoinclude s moni tor ingand
maintenance activit iesand
future
deed restrictions. U.S.
EPA
recommends RA-4
because itprovidesth e best bal-
ance
w i t h
respect to the nine
evaluation criteria (see Figure
2) .
Est imated Cost: 1.8
M i l l i on
In-Situ
Solidification/
Stabilization (RA-5)
R A 5
invo lvesd ike const ruc-
t ion
to isolatean dconso l ida te
s ludge
con ta in ing
PCBconcen-
t ra t ionsat or
above
50
p p m .
R A 5
also
i n v o l v e s
in -p lace
s ludge t rea tment
and
c o n t i n u a -
t ion
of i ns t i t u t i ona l con t ro l s as
descr ibed inR A - 2 .
E s t i m a t e d Cost : S23-S28
M i l l i o n
Ex-SituBiological
Treatment
-
Reuse Residue
(RA-6[a])
RA-6a inv olv es removal and
biological treatment of lagoon
s ludge w i th
PCB
concentrations
ator
above
50ppm. Treated
sludge
w ou ld
be
recycled
fo r
agricultural use.
Estimated Cost:
$44-$66
Mil l i on
Ex-Situ
Biological
Treatment
-
Landfill Residue(RA-6[b])
RA-6b is similar to RA-6a,
except treated sludge would
be
disposed
of in a
Wiscons in solid
was te
landf i l l
rather thanbe
recycled.
Estimated Cost:
$64-$89
Mil l ion
Ex-Situ ChemicalTreatment-
Landfi l l Residue (RA-7)
R A 7
invol ves removal and
chemical t re atm ent of lagoon
s ludge
w i th
PCB
concentrat ions
at or
above
50
ppm . Treated
s ludgew o u ldbe disposed of in
a
solid
was t e landf i l l .
Estimated Cost:$58-$73
M i l l i o n
TSCA Landf i l lDisposal( R A -
8)
R A 8
i n v o l v e s
r em ov a l
andsta-
b i l i za t i o n of
s lu d g e
c o n t a in in g
PCBc o n c e n t r a t i o n s at or
a b o v e
50 p p m .fo l lowed by d i sposa l of
the s t ab i l i zed
s l u d g e
in a
T S C A - p o r m i t t e d
l a n d f i l l .
E s t i m a t e d Cost
S I 6 0 - 5 1 6 8
M i l l i o n
4
WisconsinSolidWaste
Landfill
Disposal( R A - 9 )
RA-9 i nvolve s removal
and
sta-
bi l izat ionof s ludge conta in ing
PCB
concentrations
at or
above
50
ppm, fol lowed
by
disposal
of
the stabil ized sludge in a
Wiscons insolid waste landfi l l .
Es t imated
Cost:
$40-$53
Mil l ion
U.S.EPA
Recommendation
U.S. EPA recommends In-
Place Capping (RA-4).
RA-4 would protect human
health
and the
environment,
beeasy to implement, com-
pl y
w ith state
and
federal
regulations,
reduce move-
ment
of
contaminants ,
an d
becost
effective.
The
Next Step
Before se lec t inga finalc l e a n u p
p l a n ,
U . S .EPA
w i l l cons ider
com m en t s
rece iv edd u r i n ga
30-day p u b l i c
c o m m e n t p e ri o d
from N o v e m b e r18
th rough
December 18, 1996. The
c l e a n u p p lan wi l l be
descr ibed
i n a f i n a l dec is ion document ,
ca l l ed
a
record
of
dec i s ion ,
w h i c h
w i l l
be ava i l ab l e fo r
p u b l i c rev iew in ear ly
1997.
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PublicCommentSheet
Your input
on U.S. EPA's Proposed Planfor the Madison M etro
Super fund site
is impor tan t . Pub l ic comments
assist U.S. EPA in
selecting
its finalcleanup p lan.
Y oum ay use the
space
below to
write your comments about U.S. EPA'sProposed Plan. Com ments must
be
postmarked byDecember 18 , 1996. If you hav e questions abo ut th e comment period, contact Susan Pastor at
312-353-1325 or
1-800-621-8431.
Thosew ith e lec tronic com mun icat ions capabi l i t iesm ay submit their com -
men ts to U.S. EPA via In ternet to: pas tor .susan@ epamail .epa .gov
N a m e :
Address:
C i t y :
Sta te :
Z i p : _
8/11/2019 PROPOSED PLAN Madison Metropolitan Sewerage District Superfund Site
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Madison Metro Superfund Site
Public
Comment Sheet
Fold
on
Dashed Lines, Staple.
Stamp,andMail
N a m e _
A d d r e s s ^
Ci ty
Z ip
St a l e
Place
Stamp
Here
Susan
Pas tor ( P - 1 9 J )
C o m m u n i t y I n v o l v e m e n t
Coord ina tor
Office of Publ i c Af fa i r s
U.S.
EPA . Re g i on
5
77
Wes t J ackson Boul eva rd
Chicago . 1L60604
8/11/2019 PROPOSED PLAN Madison Metropolitan Sewerage District Superfund Site
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Evaluation
able
Figure2
EvaluationCriteria
Remedial Remedial Remedial Remedial Remedial Remedial Remedial Remedial Remedial Remedial
Alternative Alternative Alternative Alternative Alternative Alternative Alternat ive Alternative Alternative Alternative
1
2 3 4 5
6(a)
b ) 7 8 9
No
Action
1 . Overal l Protection of
Health
&
Envi ronment
2.Compl iance wi th AR AR s
3
Long
Term
Effect iveness
and
Permanence
4.
Reduct ion
ofTowci ty. Mobihty .
or
Volume
through
Treatment
5. Short-Term Effectiveness
6.
Implcmentabi l i ty
7. Cost
8.
Support
Agency Acceptance
9.Commu n i tyAcceptance
D
D
D D
NA
$0 $425,000
8.8
$1.8
23-28
$44-66
S64-89
58-73 160-168
$40-53
M i l l i o n Million M i l l i o n M i l l i o n M i l l i o n
M i l l i o n
M i l l i o n M i l l i o n
The
Wisconsin Department
of
NaturalResourcesacceptsU.S. EPA's recommended alter native
C o m m u n i t y
acceptance
of therecommended alternative
w i l l
beevaluated afterthepublic comment
period.
|
Fullymeets criteria **'
Partially
meets
criteria | |Does
ot
meet c riteria
NA-Not Applicable
Evaluation
Criteria
U.S.
EPA
used
the
fo l l ow i n g
nine criteria
to
evaluate each
alter-
nat ive. The
Evalua t ion
Table (Figure2)compares th e alterna-
t ives to
these criteria.
Overall
Protection
of Human
Health
and the
'Environmentdetermines whetheranalternative eliminates,
reduces,
or
controls threats
to
public
healthand the
environment
th rough
ins t i tu t iona l
controls, engineering controls,o rtreat-
ment .
2. Compliancewith Applicableor Relevantand
Appropriate Requirements (ARARs)
ev a l u a t es wh e th e r
th e
a l t e rn a t i v e
meetsfederal and
state env i r o nm en t a l statu tes ,
regu-
l a t ions , and
otherrequ i r emen t s
that pertain to the s i te or
w he t he r
aw a i v e ris
justified.
3. Long-TermEffectiveness and Permanenceconsidersthe
ab i l i ty of an
al te rna t ive
tom a i n t a i n
protection
of
h u m a n
health
and the e n v i r o n m e n t ov er
t i m e
and the
r e l i a b i l i t y
of suchpro-
t ec t ion .
4. Reduction of Contaminant Toxicity, Mobility,or Volume
Through Treatment
e v a l u a t e s
a n
a l t e r n a t i v e ' s
use of t re a tme n t
to
reduce
the
ha rmfu l effec ts
of
pr i nc i pa l
c o n t a m i n a n t s ,
t h e i r
ab i l i t y
to mo ve in the
e n v i r o n m e n t ,
and the
a m o u n t
of
contami-
na t io n presen t .
5. Short-Term
Effectiveness considers
thelengthoftime need-
ed to
implement
an
alternative
and the risks the
alternativeposes
to
workers, residents,
and thee n v i r o n m e n t
during
i m p l e m e n t a -
tion.
6.
Implementabilityconsiders
the
technical
and
administrative
feasibi l i ty of imp lemen t i ng th ealternative, suchasrelative avail-
abil i tyof
goods
and
services.
7. Costincludes estimated capitalandoperationandmainte-
nancecosts,as
w e l l
aspresent worth costs. Present worthcostis
th etotal cost of an al ternat iveover t ime intermsoftoday' s dol-
lars.
8.
State
Acceptance considersw h e t h e rt hestate agrees w i t h
U.S.EPA's an a l y ses and r e c o m m e n d a t i o n sof theRI/FSand the
Proposed P lan .
9. Community Acceptance
w i l l
beaddressed in theROD.
C o m m u n i t y acceptanceof therecommendedc lean up ac t ion w i l l
b e
e v a l u a t e d af te r
th e p u b l i c
co mment pe r i o d
and before the
record oi d e c i s i o n i s
i s sued .
P u b l i c
c o m m e n t s
and U.S.EP A
responses to thosec o m m e n t s w i l l b e presen ted in the resp on s i v e -
nes - , summarx .
w h i c h w i l l he a t t a ch ed to the recordo f
d e c i s i o n .
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Additional Information
Ifyouhave questions abouttheinformationinthisfactsheetorwould like additional information aboutthe
Madison Metro Proposed Plan, please writeorcalltheind iv idua lslisted below.
U.S.
EPA
Contacts
State of
Wisconsin Contacts
SusanPastor(P-19J)
Community Involvement
Coordinator
(312)353-1325
BobWhippo (SR-6J)
Remedial
Project
Manager
(312)886-4759
Toll-Free:
1-800-621-8431
U.S.EnvironmentalProtection
Agency
77
West Jackson Boulevard
Chicago, Illinois 60604
Larry Lester
StateProject
Manager
(608)
266-7596
Wisconsin Department of Natural
Resources
Bureau
o fSolida ndHazardous Waste
P.O. Box7921
Madison,Wisconsin 53707
Chuck Warzecha
Hydrogeologist
Wisconsin DMsionofHealth
1414E.
Washington, Room
96
Madison,W I 53703-3044
(608)
267-3732
Th eProposedPlan,
Community
Involvement Plan,
fact
sheets,and othersite-related information areavail-
able
forreviewin thesite information repositories at theMadison Public Library,201West Mifflin
Street,Madison,
and the
Madison Metropolitan Sewerage District, 1610Moorland
Road,
Madison.
An
Administrative Record file,w hichcontainsthe information upon
w hich
theselectionof thecleanup plan
will
be
based,
hasalsobeen established at the
Madison Public Library.
EPA
Office of
Public
Affairs(P-19J)
U.S.
EPA
Region
5
77WestJackson Boulevard
Chicago,
Illinois
60604
Bob
Whippo SR-6J)
USEPA
77W. Jackson B lvd.
Chicago, IL6 6 4