PEER REVIEW DRAFT. DO NOT CITE OR QUOTE
¦SERA
United States	Office of Chemical Safety and
Environmental Protection Agency	Pollution Prevention
Draft Risk Evaluation for
T richloroethylene
Systematic Review Supplemental File:
Data Extraction Tables for
Environmental Fate and Transport Studies
CASRN: 79-01-6
CI H
CI CI
February 2020

-------
Table of Contents
Table 1. Biodegradation Study Summary for Trichloroethylene	2
Table 2. Bioconcentration Study Summary for Trichloroethylene	17
Table 3. Photolysis Study Summary for Trichloroethylene	18
Table 4. Hydrolysis Study Summary for Trichloroethylene	21
Table 5. Other Fate Endpoints Summary for Trichloroethylene	22
EPI Suite™ Model Outputs	27
References	30

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Study Typo
(your)
Initial
CoiKontratio
11
Inoculum
Source
(An)acrobk'
S til tu s
Duration
Result
Comments
Affiliated
Reference
Data Quality
Evaluation
results olTull
Study Report
Water
Other; Anaerobic
serum bottle test
83 ng/L
Digested
sludge
Anaerobic
60 days
Biodegradation
parameter: percent
removal: 100%/60d
The reviewer
agreed with this
study's overall
quality level.
(Long et al„
1993)
High
Other; Batch
transformation
experiment under
methanogenic
conditions
ca. 200 |ig/L
Activated
sludge
(adaptation
not specified)
Anaerobic
57 days
Biodesradation
parameter: percent
removal: 40%/8
weeks
The reviewer
agreed with this
study's overall
quality level.
(Bouwer and
Mccartv. 19831
High
Other; Sequential-
Aerobic serum
bottle test
35 ng
Digested
sludge
Aerobic
22 days
Biodesradation
parameter: percent
removal: methane
culture and phenol
culture, respectivelv:
100%/22d and
100%/22d
The reviewer
agreed with this
study's overall
quality level.
(Long et al„
1993)
High
Other; Aerobic
batch fed reactor
160 ng/L
Digested
sludge
Aerobic
More than
a year
Biodegradation
parameter: test
reactor
influent/effluent
comparison: Average
reactor influent of
TCE = 160 ng/L,
average reactor
effluent = ND ng/L
The reviewer
agreed with this
study's overall
quality level.
(Long et al„
1993)
High
Other; Aerobic
serum bottle test
38 ng
Digested
sludge
Aerobic
20 days
Biodesradation
parameter: percent
removal: methane
culture and phenol
culture, respectivelv:
100%/20d and
100%/20d
The reviewer
agreed with this
study's overall
quality level.
(Long et al„
1993)
High

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Initicil
Inoculum
(An)iiorobk'
Duration
Uosult
Comments
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(your)
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11
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Reference
lAiiluiition
results olTiill
Study Report
Other; Anaerobic
120 ng/L
Digested
Anaerobic
More than
Biodegradation
The reviewer
(Lone et al„
High
batch fed reactor

sludge

a year
parameter: test
reactor
influent/effluent
comparison: Average
reactor influent of
TCE = 120 ng/L,
average reactor
effluent = 2 |ig/L
agreed with this
study's overall
quality level.
1993)

Other; non-
19 urn
Other:
Aerobic
3 Oh
Biodegradation
The reviewer
(Kim et al„
High
guideline

Hanford soil
microcosms


parameter: test
substance
transformation rate
0.01 nmol/mg total
suspended solids/h
agreed with this
study's overall
quality level.
2000)

Other; non-
550 to 700
Digested
Anaerobic
300 days
Biodeeradation
The reviewer
(Freedman
High
guideline study;
reductive
dechlorination in
nmol/100 mL
sludge

1st
generation
inoculum;
parameter: removal:
2.83 |imol/17d
agreed with this
study's overall
quality level.
and Gossett.
1989)

a semi-



120 days




continuous



sixth




reactor with an
anaerobic



generation
inoculum




enrichment








culture








Other; non-
>18 to <187
Other:
Anaerobic
16 weeks
Biodegradation
The reviewer
(Bouwer et al„
High
guideline
anaerobic
l-ig/L
Methanogeni
c mixed


parameter: removal:
limited degradation
agreed with this
study's overall
1981)

biodegradation

culture



quality level.


experiment

grown in a
laboratory-
scale






Other; non-
guideline
20 mg/L
Other
Anaerobic
10 days
Biodegradation
parameter: removal:
95%/5d
The reviewer
agreed with this
(PhelDS et al„
1991)
High

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Concentintio
ii
Inoculum
Souito
(An)iiorobk'
S til tu s
Duration
Result
Comments
Affiliiited
Reference
Diitii Qu.ilitv
lAiiluiition
results oM'ull
Study Report
experimental
bioreactor





study's overall
quality level.


OECD Guideline
302 B (Inherent
biodegradability:
Zahn-
Wellens/EMPA
Test); A "fast
biodegradability
test" was done
initially,
according to Polo
etal. 2011.
Compounds,
including TCE,
that were not
determined to be
biodegradable in
adapted sludge
according to that
test underwent
the OECD 302 B
test.
100 mg/L
Activated
sludge,
domestic,
adapted
Aerobic
28 days
Biodegradation
parameter: TOC:
38.9%/28d
The reviewer
agreed with this
study's overall
quality level.
(Tobaias et ai,
20161
High
Other; static-
culture flask-
screening test
5 to 10 mg/L
Sewage,
domestic,
non-adapted
Aerobic
28 days
(includes
7-day
static
incubation
and 3
weekly
subculture
s)
Biodegradation
parameter: percent
removal at 5 mg/L
test substance and
10 me/L test
substance,
respectivelv:
64%/7d and
87%/28d; and
87%/7d and
84%/28d
The reviewer
agreed with this
study's overall
quality level.
(TabaketaL
19811
High

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Study Typo
(your)
Initial
Coiuentintio
ii
Inoculum
Sou n o
(An)iiorobk'
S til tu s
Duration
Uosult
Coninionts
A Hil kited
Reference
Diitii Qiiiilitv
lAiiluiition
results olTull
Study Report
Other: granular
sludge from USAB
reactor treating
sugar beet
refinery
wastewater.
Methanol used as
growth substrate.
>1000 to
<1500 other
Activated
sludge,
industrial,
non-adapted
Anaerobic
65 days
Biodeeradation
parameter:
concentration:
approx. 900 nmol
after 65d (initial
concentration: 1375
nmol)
The reviewer
agreed with this
study's overall
quality level.
(van Eekert et
al.. 2001")
High
other: aquifer
water from 15,
25,35,45 and 55
m away from
landfill
ca.120 to
ca.150 |ig/L
Water (not
specified):
sediment and
ground water
collected 15,
25,35, 45 and
55 m away
from landfill
Anaerobic
537 days
Biodeeradation
parameter: percent
removal fanaerobic"):
Complete reduction
was seen closest to
the landfill (15, 25
and 35m). No
degradation was
observed at further
distances
The reviewer
agreed with this
study's overall
quality level.
(Biere et al.
1999)
High
Other: cylinder
open at bottom,
screened at top.
Installed in the
aquifer through a
borehole approx.
5 m below ground
surface.
ca.150 |ig/L
Natural
water:
freshwater
Aerobic
3 months
Biodegradation
parameter: percent
removal faerobic!:
0%/3 months
The reviewer
agreed with this
study's overall
quality level.
(Nielsen et al..
1996)
High
other: ISMs -
Stainless steel
cylinder open at
bottom, screened
at top. Installed at
15,25,35, 45 and
55m from landfill
ca.120 to
ca.150 |ig/L
Water (not
specified)
Anaerobic
220 days
Biodeeradation
parameter: percent
removal fanaerobic"):
Complete reduction
was seen closest to
the landfill (15, 25
and 35 m). No
degradation was
The reviewer
agreed with this
study's overall
quality level.
1999)
High

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observed at further








distances



Other: bottles on

Other;
Anaerobic
lh
Biodegradation
The reviewer
(Hasten and
High
shaker table

Anaerobic
mixed culture
known to be
capable
dechlorinatin
g PCE to
ethene
seeded with
aquifer
material from
a PCE-
contaminated
site in
Victoria, TX


parameter:
Dechlorination rate:
59 |iM/day;
Biodegradation
parameter: Half-
Velocitv Coefficients
(Ks): 1.4+/-0.09 \M;
kapp = 1.6+/-0.3
|imol (mg of volatile
suspended solids)-l
d-1)
agreed with this
study's overall
quality level.
Mccarty. 19991

Other:
ca.150 ng/L
Natural

3 months
Biodegradation
The reviewer
(Nielsen et al„
High
groundwater
collected from

water:
freshwater


parameter: percent
removal: No
agreed with this
study's overall
1996)

drive point
piezometers.




degradation
observed under
aerobic conditions
quality level.


Other;
<11.8 mg/L
Other;
Anaerobic
100 days
Biodegradation
The reviewer
(Schmidt and
High
groundwater
microcosm

groundwater

for
anaerobic
parameter: percent
removal via
agreed with this
study's overall
Tiehm. 20081

studies using



reductive
reductive
quality level.


water obtained



dechlorina
dechlorination:



from a metal-



tion
100%/40d using



working industry



studies
groundwater



polluted with




microcosms



chlorinated




amended with



solvents




hydrogen/acetate



Other; influents

Activated
Not specified
3 months
Biodeeradation
The reviewer
(Lee et al„
High
and effluents of

sludge,


Darameter: Dercent
agreed with this
20151


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Study Report
27 Korean
WWTPs screened
for 22 chemicals

industrial
(adaptation
not specified)


removal festimated
from eraphl: 95%/3
mo.
(degradation,
volatilization,
sorption to solids, all
included in
"removal")
study's overall
quality level.


Other; non-
guideline
5 to 30 mg/L
Other; from
stream at U of
Washington
Seattle
campus,
enriched by
phenol
feeding and
non-enriched
Aerobic
1 day
Biodeeradation
parameter:
degradation rate:
0.10-0.25 (avg =
0.18) g/gvolatile
suspended solids/d
The reviewer
agreed with this
study's overall
quality level.
(Bielefeldt et
al„ 19951
High
Other; non-
guideline
30 to 60 |ig/L
Natural water
Anaerobic
62 hours
Biodegradation
parameter: pseudo-
first-order rate
coefficient k'.
without and with
methane,
respectivelv: 2.3+/-
0.05 L mg/day and
0.004 to 0.046 L
mg/day
The reviewer
agreed with this
study's overall
quality level.
(Henry and
Grbic-Galic,
1991)
High
Anaerobic
continuous flow
study (large
column)
ca. 300 |ig/L
Organic
waste
streams
Anaerobic
Not
applicable
Biodeeradation
parameter:
concentration finitial
concentration: ca.
300 Hg/L):
<5 ng/L;
PCE and TCE were
loaded to column
The reviewer
agreed with this
study's overall
quality level.
(Voeel and
Mccartv. 19851
High

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Study Report





together,
transformation
product was vinyl
chloride



Other; microcosm
study
(cometabolism)
2.5 mg/L
Natural water
Anaerobic
34 days
Biodegradation
parameter: percent
removal in the
presence of
methanol and
chlorobenzene
respectivelv:
100%/23d and
100%/34d
The reviewer
agreed with this
study's overall
quality level.
(Kao and
Prosser, 1999)
Medium
Other; microcosm
study
(cometabolism)
2.5 mg/L
Natural water
Aerobic
34 days
Biodeeradation
parameter: percent
removal in the
presence of phenol
and chlorobenzene
respectivelv:
100%/15d and
100%/23d
The reviewer
agreed with this
study's overall
quality level.
(Kao and
Prosser, 1999)
Medium
Other; controlled
microcosm
studies conducted
to simulate
seasonal (spring,
summer and
winter) field
conditions
>3.2 to <3.6
Hg/L
Natural
water:
marine
Aerobic
6 days
Biodeeradation
parameter: half-lives
poisoned with HgCl?
and not poisoned,
respectivelv: 10.7 d
and 8.6 d;
Biodeeradation
parameter: rate
constants poisoned
with HgCl? and not
poisoned,
respectivelv: -0.064
day-1 and -0.081
day-1
The reviewer
agreed with this
study's overall
quality level.
(Wakeham et
al„ 19831
Medium

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Other; controlled
microcosm
studies conducted
to simulate
seasonal (spring,
summer and
winter) field
conditions
>2.4 to <3.8
Hg/L
Natural
water:
marine
Aerobic
64 d
(spring),
20 d
(summer),
61 d
(winter)
Biodegradation
parameter: half-lives:
28 d (spring), 13 d
(summer), 15 d
(winter);
Biodeeradation
parameter: rate
constants: -0.025
days-1 (spring), -
0.052 days-1
(summer), -0.045
days-1 (winter);
Volatilization
dominated the loss of
test material
The reviewer
agreed with this
study's overall
quality level.
(Wakeham et
aL. 19831
Medium
Other; non-
guideline
~3.33 Hg/ml
Other: muck
from the
Everglades
Anaerobic
30 days
Biodegradation
parameter: half-life:
43 d
The reviewer
downgraded this
study's overall
quality rating.
They noted:
Trichlor o ethylen
e is a
transformation
product in this
study.
(Wood et ai,
0
Medium
Other; non-
guideline
microcosm
30 to 70 |ig/L
Other; 0.7 gof
fresh,
washed, dried
plant roots
Aerobic
approx.
9 Od total
Biodegradation
parameter: pseudo
first-order rate
constant: 0.22
(±0.12) d-1
The reviewer
agreed with this
study's overall
quality level.
(0in et ai.
2014)
Medium
Other;
biotransformatio
n in static
microcosms
3.7 mg/L
Natural water
/ sediment:
freshwater
Aerobic
16 weeks
Biodegradation
parameter:
Concentration f|ig/Ll
of degradation
Droducts f95%
The reviewer
downgraded this
study's overall
quality rating.
They noted: Loss
(Parsons et ai.
1985)
Low

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Concentintio
11
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Source
(An)norobic
S til tu s
Duration
Result
Comments
A Hi 1 in ted
Reference
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Stuck Report





confidence interval
in parentheses!: Cis:
wk 0 - ND, wk2:
38(13), wk 8: 30(4),
wk 12: trace; wk 16:
1200(637); Trans:
wk 0 - ND, wk2:
85(906), wk 8: trace,
wk 12: ND; wk 16:
ND;: wk 0 - ND, wk2:
ND, wk 8: 57(340),
wk 12: ND; wk 16:
ND
due to abiotic
processes
and/or
adsorption were
not controlled.
Concentrations
of TCE over time,
degradation rate
or half-life were
not reported,
limiting
evaluation of the
study.


Other; inhibition
of gas production
to anaerobic
sludge from an
operating
municipal sludge
digester
0 to 1000
mg/L
Sewage,
domestic
(adaptation
not specified)
Anaerobic
48 hours
Parameter:
inhibition of sas
production: 21%
inhibition at 10 mg/L
and 56% at 100
mg/L after 48h
The reviewer
downgraded this
study's overall
quality rating.
They noted:
Study describes
inhibition of gas
production not
biodegradation
rates or
transformation
pathways.
(Dow Chem
Co. 19771
Low
Other; anaerobic
continuous-flow
column studies
>4.4 |ig/L to
<20.5 mg/L
Anaerobic
bacteria
Anaerobic
22 days;
Liquid
detention
in large
column =
6 days;
small
column =
2-4 days
Biodegradation
parameter:
concentration: flarse
column"): PCE and
TCE influents ~300
|ig/L were reduced
to <5 ng/L
The reviewer
downgraded this
study's overall
quality rating.
They noted:
Based on lack of
control group
details and the
test substance,
Trichlor o ethylen
(Voeel and
Mccartv. 19851
Low

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e, was a
degradation
product of the
test substance
mixture.


Other;
thermodynamic
parameters such
as enthalpy of
formation and
entropies of
formation were
calculated for
aqueous
chloroethylenes
by extrapolating
partial molar
enthalpies for gas
phased species.

Not specified
Anaerobic

Biodegradation
parameter:
Thermodynamic
parameters:
Calculated standard
partial molal
thermodynamic
properties for the
aqueous
chloroethylenes at
elevated
temperatures and
pressures may be
used to predict the
equilibrium
stabilities of these
species under a wide
range of
environmental and
geologic conditions.
The reviewer
downgraded this
study's overall
quality rating.
They noted:
Study reports
calculated
estimates with
limited details
for endpoints
related to fate
(thermodynamic
property).
(Haas and
Shock. 19991
Low
Other; non-
guideline aerobic
biodegradation
experiment
11+/-17% to
81+/-18%
Hg/L
Other:
primary
sewage
effluent Palo
Alto, CA,
Water
Pollution
Control
Facility
Aerobic
25 weeks
Biodegradation
parameter: percent
removal in test
svstem: No
detectable or
significant
degradation
observed under the
tested conditions
The reviewer
downgraded this
study's overall
quality rating.
They noted:
Greater than
100% of test
substance was
remaining
relative to the
(Bouwer et a)„
1981)
Low

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Reference
Diitii Qiiiilitv
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Stuck Report






controls after 25
weeks.


Other;
trichloroethylene
transformation by
a Mixed
Methanotrophic
Culture
>0.6 to <15
mg/L
anaerobic
microorganis
ms
anaerobic

Biodegradation
parameter:
transformation rates
from freshlv
harvested cells: 0.58
to 1.1 mg/mg
cells/day;
Biodegradation
parameter:
transformation rates
for initial TCE
concentrations of 0.6.
3. and 6 me/L.
respectively: 0.068.
0.048, and 0.026
mg/mg cells/day; the
rate of
transformation
declined over time
and was found to
increase if an
electron donor
(formate) was
added; it was also
noted that toxicity as
a result of TCE
and/or
transformation
products may be a
factor
The reviewer
downgraded this
study's overall
quality rating.
They noted:
Variation in
transformation
rates indicated
that loss was
affected by
factors other
than strictly
biotic processes.
(Alvarez-
Cohen and
McCartv.
1991)
Low
Other; anaerobic
biodegradation
1.00 mg/L
anaerobic
sludge
anaerobic
100 days
Biodegradation
parameter: percent
removal: 39%/100d
Extraction
efficiency,
percent
ffiossetL
19851
Unacceptable

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Study Report





from seeded
samples;
Biodegradation
parameter:
concentration of
degradation
intermediates and
products: 1.1-DCE
(11 nmol); cis-1,2-
DCE (27 nmol); VC
(12 nmol)
recovery, and
mass balance
were not
reported;
analytical
methods were
not reported,
and loss of test
material not
accounted for
limits evaluation
of the study.


Other
14.6 mg/L
activated
sludge
(adaptation
not specified)
aerobic/anaerob
ic
14 days
Biodegradation
parameter: percent
removal: anaerobic:
0%/14d;
Biodegradation
parameter: removal:
aerobic changed to
anaerobic
conditions: some
transformation/14d
The test method
was not suitable
for the test
substance since
TCE was also a
degradation
product of
another
compound being
tested it is
difficult to
confirm or
determine TCE
removal.
(Kastner,
1991)
Unacceptable
Other; solid,
liquid, and gas
emissions from a
municipal solid
waste and sludge
composting
reactor were
analyzed for DCM
and other VOC.

activated
sludge,
domestic,
adapted
aerobic
5 days
Biodeeradation
parameter: percent
removal: >0%/5d
Based on
insufficient data
reported for
TCE. Removal
efficiency for
volatilization,
biodegradation
and residuals for
TCE of >0%
(Kim et al„
1995)
Unacceptable

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AfTilmtori
Uoforoiuo
Diitii Qu.ilitv
lAiiluiition
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Stuck Report
Based on
degradation rates
from Howard
1991 and other
system
parameters, VOC
concentrations
were estimated in
starting MSW.





were not
sufficient to
evaluate study
results.


Other;
degradation in
open and closed
systems
>0.1 to <1 ppm
natural
water:
marine
not specified
14 days
Biodegradation
parameter: percent
removal in open-
lisht. closed-lisht.
and closed-dark
svstems.
respectivelv: 80%.
35%, 30%
Serious
uncertainties or
limitations were
identified in
sampling
methods of the
outcome of
interest. In
addition, loss
from leaks in
valves and open
test systems
were likely to
have a
substantial
impact on the
results. These
serious flaws
make the study
unusable.
(lensen and
Rosenberg.
1975)
Unacceptable
14C-labelled
Not reported
activated
sludge,
adapted
aerobic
Not
reported
Biodegradation
parameter: percent
removal of
radiolabel: 3.4%
No information
was provided
about the test
substance other
that a statement
saying some test
1^53"
Unacceptable

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PEER REVIEW DRAFT - DO NOT CITE OR QUOTE
Study Typo
(your)
Initicil
CoiKontrntio
11
Inoculum
Source
(An)iiorobk'
S til tu s
Duration
Result
Comments
AfTilmted
Reference
Diitii Qu.ilitv
lAiiluiition
results oM'iill
Study Report






substances were
bought, some
were
synthesized in
the lab.


Other; non-
guideline
Not reported
for TCE study
(cites Powell
etal. 2011)
Not reported
for TCE study
(cites Powell
etal. 2011)
aerobic
Not
reported
for TCE
study
(cites
Powell et
al. 2011)
Biodegradation
parameter:
degradation rate
constant: 0.15 d1
(mean; biomass
normalized)
Study details for
TCE reported in
separate study
(not available in
HERO: Powell,
C.L., Agrawal, A.,
2011. Co-
metabolic
degradation of
trichloroethene
by methane
oxidizers
naturally
associated with
wetland plant
roots:
investigation
with Carex
comosa and
Scirpus
atrovirens.
Wetlands 31 (1),
45-52.)
(Powell et al.
2014)
Unacceptable
Sediment
Other; anaerobic
biodegradation
with methane-
utilizing mixed
culture
110 ng/mL
natural
sediment
anaerobic
54 hours
Biodegradation
parameter: percent
removal of radiolabel
via primarv
degradation:
100%/2d (not all of
The reviewer
agreed with this
study's overall
quality level.
(Fogel et al.
1986)
High

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PEER REVIEW DRAFT - DO NOT CITE OR QUOTE
Study Typo
(your)
Initial
Coiuentintio
11
Inoculum
Sou n o
(An)iiorobk'
S til tu s
Duration
Uosult
Coninionts
A Hil kited
Reference
Diitii Qiiiilitv
lAiiluiition
results olTull
Study Report





this is completely
biodegrading to
carbon dioxide
during this time
period")



Other; static
microcosm with
muck and surface
water in sealed
septum bottles
studying
tetrachloroethene
100 ng
natural
sediment:
freshwater
anaerobic
21 days
Biodeeradation
parameter: percent
removal: 72.2%/21d
The reviewer
agreed with this
study's overall
quality level.
(Parsons et al„
V)
Medium
Non-guideline
50 |imol/L
Dehalococcoi
des sp. was
characterized
as the
microbe
responsible
for the
dechlorinatio
n ofTCE
anaerobic

Biodegradation
parameter: highest
dechlorination rate
observed: 68.8
l_imol/L day;
Biodeeradation
parameter:
dechlorination
products: trans-
DCE:cis-DCE ratio =
1.43:1; Complete
reductive
dechlorination of
TCE to ethene was
accomplished in
sediments from 1
location.
The reviewer
downgraded this
study's overall
quality rating.
They noted: This
study focused on
dechlorination
by a specific
species and due
to limited
information
being reported
in the study,
evaluation of the
reasonableness
of the study
results was not
possible.
(Chene; et al„
2010)
Low

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Table 2. Bioconcentration Study Summary for Trichloroethylene
Study Typo
(your)
Initial
Conconticition
Spocios
l)ii riition
Uosult
Commonts
Ami in tod
Uoforonco
l);i til
Qu.ilitv
lAiiliiiition
results of
l ull Study
Uoport
Bioconcentration
in Bluegill
sunfish:
Aquarium with
well-water and
modified
continuous-flow
proportional
dilution
apparatus for
chemical
introduction
8.23±0.42
l-ig/L
Bluegill
sunfish
(Lepomis
macrochirus]
100 per
aquarium
Tetrachloroethylene
14 days; Test: 28
days or until
equilibrium; water
and fish samples
collected
periodically until
apparent
equilibrium was
reached or the max
exposure of 28 days
was reached
Bioconcentration
parameter: BCF:
17 (bluegill);
Bioconcentration
parameter: half-
life:
>1 day;
The reviewer agreed
with this study's
overall quality level.
(Barrows et al„
1980)
High
OECD Guideline
305 B
(Bioaccumulation:
Semi-static Fish
Test)
2500 ng/L
Zebra fish
(Brachydanio
rerio)
2 weeks
Bioconcentration
parameter: BCF:
19 (zebra fish,
average),
12 (zebra fish,
based on initial
concentration),
65 (zebra fish,
based on
concentration 48
hours into test)
The reviewer
downgraded this
study's overall
quality rating. They
noted: Evaluation of
the reasonableness of
the study results was
not possible due to
limited data
reporting regarding
sampling and
controls.
(Umweltbundesamt.
1984)
Low

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Table 3. Photolysis Study Summary for Trichloroethylene
Study I'vpo (year)
Wavelength
Range
D11 ration
Result
Comments
Affiliated
Reference
Data Quality
evaluation
results ot l 11II
Study Report
Air
Photooxidation
through the action of
NO2 and sunlight.
3160-3660
Angstrom
140 minutes
Photodesradation parameter:
indirect photolvsis fNCbl
percent removal: 66%/140
min;
Photodegradation parameter:
indirect rate constant K fNCbl:
0.6 min1
The reviewer agreed
with this study's
overall quality level.
(Gav et al„
1976.)
High
Water
Photodegradation in
water (indirect
photolysis)
185 to 254 nm
60 min
Photodegradation parameter:
indirect photolvsis rate
constants:
0.0135k deg min1
(oxygenated)
0.0498 k deg min1 (oxygen
free)
Photodesradation parameter:
indirect photolvsis half-lives:
3.75 min (oxygenated);
3.39 min (oxygen free)
The reviewer agreed
with this study's
overall quality level.
(Shiravama et
al.. 2001)
High
Outdoor solar
treatment system
using solar radiation
andTi02
365 nm
6 hours; 10
am to 4 pm
Photodegradation parameter:
First-order rate constants:
Clear skv. Partlv cloudv skv.
and Thick cloudv skv.
respectivelv: 0.074/min.
0.018/min, and 0.004/min;
Photodegradation parameter:
percent removal: Clear skv.
Partlv cloudv skv. and Thick
cloudv skv. respectivelv: 88%.
81.2%, and 55.1%;
The reviewer agreed
with this study's
overall quality level.
(Park et al..
2003)
High

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PEER REVIEW DRAFT - DO NOT CITE OR QUOTE
Study I'vpo (vein)
Wavelength
Run^e
Duration
Result
Comments
Affiliated
Reference
Data Quality
Evaluation
results ot l iiII
Study Report



TCE rapidly degraded in the
presence of Ti02 and solar
light, complete degradation
was observed after 120 min
under a clear sky and 270 min
under a cloudy sky, 80% loss
was observed under a thickly
cloudy sky; results were
negative in the presence of
Ti02 alone and solar light
alone.



Seasonal variation and
byproducts of TCE
using an outdoor solar
treatment system with
solar radiation and
Ti02
365 nm
6 hours; 10
am to 4 pm
(Summer:
July-August;
Winter:
December-
January)
Photodegradation parameter:
First-order rate constants:
Winter at 50.100.150. and 200
me/L. respectively: 0.073/min.
0.047/min, 0.028, and
0.018/min,
Photodegradation parameter:
First-order rate constants:
Summer at 50.100.150. and
200 ms/L. respectively:
0.095/min, 0.065/min,
0.038/min, 0.024min;
Summer resulted in 1.3X faster
degradation rates compared to
winter
The reviewer agreed
with this study's
overall quality level.
(Park et al„
2003)
High
EPA OTS 796.3700
(Direct Photolysis Rate
in Water by Sunlight)
sunlight
1 year
Photodegradation parameter:
DT50:
6.6 months
The reviewer agreed
with this study's
overall quality level.
Related HERO ID
3970783, ECHA.
Phototransformation
in water:
(Dilline et al„
1975)
High

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PEER REVIEW DRAFT - DO NOT CITE OR QUOTE
Study I'vpo (vein)
Wavelength
Run^e
Duration
Result
Comments
Affiliated
Reference
Data Quality
Evaluation
results ot l 11II
Study Report




Tetrachloroethylene.
2017.


Non-guideline batch
reactor
253.7 nm
60 min
Photodegradation parameter:
indirect photolvsis fOH radicals
generated from peroxide"):
concentration: studies atpH 3.
5, 7,11 and varying conc. of
H2O2 all had significant
decreases in C(final)/Co over
60 min of experiment (<0.3]
The reviewer agreed
with this study's
overall quality level.
(Dobaradaran
et al„ 2012)
Medium
Other


Photodegradation parameter:
degradation:
36%
A single data point
(36% degradation)
was provided. More
info may be available
in the report;
however, the
document is illegible.

Unacceptable

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Table 4. Hydrolysis Study Summary for Trichloroethylene
Study Type (year)
PH
Temperature
Duration
Results
Comments
Affiliated
Reference
Data Quality
Evaluation
Results of
Full Study
Report
Nonguideline lab
study in Pyrex tubes
with light-proof
container, shaken
every 2-weeks, water
purged with air for
15 min prior to
addition of
chlorinated
compounds
Not reported
approx. 25 2C
1 year
Hvdrolvsis
parameter: Half-life:
10.7 months (avg.),
1 ppm/0 months,
0.68 ppm/6 months,
0.44 ppm/12
months;
Decomposition rate
in aerated water in
the dark; part of the
reaction may have
occurred in the
vapor phase.
The reviewer
agreed with this
study's overall
quality level.
(Dilline et al„
1975)
High
Alkaline homogenous
hydrolysis
experiments; a range
ofpH and
temperature
evaluated. Arrhenius
temperature
dependence
assumed.
2-14
70-160
30 min to several
days (for all test
materials; specific
duration for
tetrachloroethylene
not specified)
Hvdrolvsis
parameter: half-life
fpH 7. 25 °CH:
1.3E6 years.
The reviewer
agreed with this
study's overall
quality level.
(leffers et al„
1989)
Medium

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Table 5. Other Fate Endpoints Summary for Trichloroethylene
System
Study Type (your)
Uosults
Com moil ts
A ITi Im tod
Uoforoiuo
Oil til Qu.ility
lAiiliiiition
results on iiII
Study Uoport
For the wind speed
experiments, bottles
were cut so that the
height of the bottle was
<0.5 cm from the water
surface. For water
motion experiments,
the bottles were cut to
make that distance
4.5cm so that and wind
speed was not a factor.
TCE evaporation
from DI water was
measured at various
wind speeds and
water agitation
speeds.
Parameter: volatilization half-life with
no wind/water motion:
50%/3h
Parameter: volatilization half-life with
water motion at 50.100. and 150 rpm.
respectivelv
50%/2.07h, 0.59h and 0.16h
Parameter: volatilization half-life with
wind speeds 0.54 m/s and 1.58 m/s:
50%/2.43h and 0.31h
The reviewer agreed
with this study's
overall quality level.
(Pant et al„
2007)
High
Model
Two-dimensional
numerical model and
analysis of vapor
sorption on the
subsurface transport
of volatile organic
compounds
Parameter: volatilization percent
removal after 100 davs:
From soil w/ moist surface and dry
lower levels, 73.2% w/ strong vapor
sorption and 84.6% w/o vapor
sorption; From dry soil, similar to
previous; From soil w/ dry surface and
moist lower levels, 81.2-90.3% w/
strong vapor sorption and 72.3% w/o
vapor sorption.
The reviewer agreed
with this study's
overall quality level.
(Culver et al„
1991)
High
>90% of the
wastewater is
composed of
residential and
commercial domestic
sewage with <5% from
industrial sources;
most plants also
receive runoff (18-
40%") from the
Analysis of NYC
municipal
wastewaters from
1989-1993
Parameter: WWTP influent/effluent
comparison: Trichloroethene was
detected in 27% of influent samples
and 7% of effluent samples; the
concentration range detected in
influent was 1-46 |ig/L and effluent
was 2-3 |ig/L.
The reviewer agreed
with this study's
overall quality level.
(Stubin et al„
1996)
High

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PEER REVIEW DRAFT - DO NOT CITE OR QUOTE
System
Study Type (your)
Uosults
Com moil ts
A ITi Im tod
Uoforoiuo
Oil til Qu.ility
lAiiliiiition
results on iiII
Study Uoport
surrounding urban
watershed





Processes governing
solute transport and
volatilization were
quantified using
measured field data
and the OTIS (one-
dimensional transport
with inflow and
storage")
Volatilization rates
and half-lives for
VOCs in constructed
wastewater
treatment wetlands
Parameter: wastewater treatment
wetlands to air mass flux:
0.06 g/d/hectare
The reviewer agreed
with this study's
overall quality level.
(Keefe et ai,
2004)
High
Modified EPA method
624
Stripping of volatile
organics from
wastewater
Parameter: WWTP influent/effluent
comparison:
213 and 745 |ig/m3 max off gas
samples; avg influent and effluent: 0.6
and 0.1 |ig/L in water and 50 and 19
|Ag/m:i in off gas at skyway,
respectively, influent and effluent: 2 0.9
and 2.9 ng/L in water and 289 and 252
|ig/m3 in off gas at highland creek,
respectively.
The reviewer agreed
with this study's
overall quality level.
fBell et ai,
1993)
High
Beaker with mixer and
dissolved oxygen
analyzer in line
Volatilization rate
study for high-
volatility compounds
Parameter: volatilization rate constant
ratios kvC/kvo:
0.57 ±0.09; range of kvo = 1.6-10.7 h-1
The reviewer agreed
with this study's
overall quality level.
(Smith et ai.
1980)
High
Monitoring;
trichloroethene
concentrations in
KWRP wastewater
~0.4 ng/L, Post-MF
~0.6 Hg/L, Post-RO <
0.003 ng/L; in BPP
wastewater <0.04
|ig/L, Post-MF <0.03
|ig/L, Post-RO <0.003
Iig/L
Monitoring of water
samples and
correlation to
treatment efficiency
Parameter: WWTP removal efficiency:
91.2% for tetrachloroethene; STE
samples (n=29): 48.3% detections;
post-MF samples (n=9): 55.6%
detections; post-RO samples (n=27):
7.4% detections
The reviewer agreed
with this study's
overall quality level.
(Rodriguez et ai.
2012)
High

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System
Study Type (vein)
Results
Comments
A Nil kited
Reference
Oil til Quality
lAiiliiiition
results ot l iiII
Study Report
Gravimetric
measurements by a
Mettler H54 balance
Evaporation rates of
solutes from water
Parameter: volatilization rates at 23.9
!£:
5.07E5 g/cm2-s
The reviewer agreed
with this study's
overall quality level.
(Chiou et al„
1980)
High
12h Batch reactions
run in lab-scale
bioreactor
continuously
simulating pre-
sedimentation without
aeration (1st to 2nd
hr.), followed by
forepart (3rd to 6th
hr.) and rear part
aerobic biological
treatment (7 th to 10 th
hr.), post-
sedimentation (final 2
hrs.)
Lab-scale batch
experiments using a
bioreactor to
simulate the fate of
VOCs in wastewater
treatment plants
(WWTP] and fugacity
model predictions of
VOCs in WWTP
Parameter: partitioning:
The concentrations of the VOCs in the
air, water, and sludge phases of the
bioreactor were analyzed regularly.
Mass distributions indicated that TCE
was mainly present in the water phase
throughout the four treatment stages;
less than 1% of the total mass was
subject to biological sorption and/or
degradation by the sludge; water
aeration resulted in increased
partitioning to the air phase with a
negative impact on biological removal;
TCE mass distribution throughout the 4
stages: ~99% water, ~0.1% air, less
than 0.1% sludge
The reviewer agreed
with this study's
overall quality level.
(Chen et ai,
2014)
High

Concentration in
seawater and air
Parameter: seawater to air flux:
0.03-309.7 (mean 70.0) nmol nr2 d1
The reviewer agreed
with this study's
overall quality level.
CHe et al.. 20131
High
200 rpm stirring of the
solution with a
shallow-pitch

Parameter: volatilization half-life: 23.5
min
The reviewer agreed
with this study's
overall quality level.
milling. 19771
High
Wastewater flow: 41.5,
21,852,2390, 499,110
and 30.5 L/min.
Volatile organic loading
rate: 14.6, 4.6, 292,
286,19,5.29, 0.395
kg/L. Feed ratio: 9.6,
10.5, 28.8, NA, 14.7,
7.1,1.4 kg/kg for
plants A-G respectively
7 steam stripper
operations are
reported
Parameter: percent removal from
steam stripper operations: >99.7 to
>99.9% removal from plants A, C and D.
The reviewer agreed
with this study's
overall quality level.
CBlanev. 19891
Medium

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PEER REVIEW DRAFT - DO NOT CITE OR QUOTE
System
Study Type (your)
Uosults
Com moil ts
A ITi Im tod
Uoforoiuo
Oil til Qu.ility
lAiiliiiition
results on iiII
Study Uoport
VOCs injected into
water line of shower
and glass syringes
were used to collect air
and water samples.

Parameter: percent volatilization at 25
°C. 33 °C. and 42 °C. respectivelv:
-56% +/- 7%, -60% +/-10% and
-62% +/" 8%
Parameter: percent volatilization at 42
°C bv flow rates: — 67% +/- 7% at 9.7
L/min, —65% +/- 7% at 13.5 L/min
The reviewer
downgraded this
study's overall quality
rating. They noted:
Study investigated
volatilization from
shower water. Study
results may not be
relevant to a
specific/designated
Fate endpoint.
(Tancrede et al„
1992)
Low
Reactors were fed by
actual wastewater
from unnamed
facilities that were
spiked with various
VOCs.
Field study
Parameter: WWTP influent/effluent
comparison: influent: 22-190 fmean
110) mg/L (SD 50.1); effluent: nd-6
mg/L (mean 2.86) (SD 1.73)
The reviewer
downgraded this
study's overall quality
rating. They noted:
Modeling study that did
not report the related
experimental details
well.
(Soltanali and
Hagani. 2008)
Low
WWTP sampling

Parameter: 8h TWA in air 200 ppb
Parameter: air concentration:
0.04-35 ppm v/v;
Parameter: WW concentration:
0.11-7.5 ng/L
The reviewer
downgraded this
study's overall quality
rating. They noted: The
volatility is reported
for 3 sites in open
systems.
(Dunovant et al„
1988)
Low
continuous release of
chemicals and steady
hydrological
parameters assumed to
develop a steady-state
model for estimating
concentration in river
Hydrological data
and monitoring
samples are used to
calculate
volatilization
Parameter: half-life in river:
4-6d;
TCE release from the river is variable
with an average value of 0.16%. Mainly
removed by volatilization.
This is a site specific
modeling study
reporting estimated
data.
(Briiggemann
and Traoi3,
1988)
Unacceptable

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PEER REVIEW DRAFT - DO NOT CITE OR QUOTE
System
Study Type (your)
Uosults
Com moil ts
A ITi Im tod
Uoforoiuo
Oil til Qu.ility
lAiiliiiition
results on iiII
Study Uoport
Full scale Wet Air
Oxidation (WAO) of
solvent still bottoms
and general organic
waste details
Wet air oxidation
performance data
Parameter: percent removal from test
svstem:
>67.74%;
Effluent concentration solvent still
bottoms of trichloroethylene = <50
mg/L
Due to limited
information, evaluation
of the reasonableness
of the study results was
not possible.
(Matienzo.
19891
Unacceptable
Highland Creek WWTP
in Toronto, Ontario
(pilot plant study also
reported in the study)
Partitioning in
activated sludge
plant
Parameter: percent removal from
WWTP: >90% bv full scale aeration
basin; TCE not detected in liquid-phase
Study evaluates
removal based on air
stripping. The extent of
air stripping is a
function of the
compound physical-
chemical properties
and a function of
WWTP design and
operation.
(Parker et al„
1993)
Unacceptable
Performance data was
collected on full scale
batch fractional
distillation systems as
referenced in the
source document
Distillation
performance data
Parameter: performance of test svstem:
Mean solvent concentration of
distillation residues: trichloroethylene
14 reported values, mean
concentration = 4; feasible treatment
level = 2.0 mg/kg
Due to limited
information, evaluation
of the reasonableness
of the study results was
not possible.
(Matienzo.
1989)
Unacceptable

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EPI Suite™ Model Outputs
CAS Number: 000079-01-6
SMILES : C(=CCL)(CL)CL
CHEM : TRICHLOROETHENE
MOL FOR: C2 HI CL3
MOLWT : 131.39
	EPI SUMMARY (v4.11)	
Physical Property Inputs:
Log Kow (octanol -water): 2.42
Boiling Point (deg C) : 87.20
Melting Point (deg C) : -84.70
Vapor Pressure (mm Hg) : 69
Water Solubility (mg/L): 1280
Henry LC (atm-m3/mole) : 0.00985
Log Octanol-Water Partition Coef (SRC):
Log Kow (KOWWIN vl.68 estimate) = 2.47
Log Kow (Exper. database match) = 2.42
Exper. Ref: HANSCH,C ET AL. (1995)
Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPVP vl.43):
Boiling Pt (deg C): 84.79 (Adapted Stein & Brown method)
Melting Pt (deg C): -77.15 (Mean or Weighted MP)
VP(mm Hg,25 deg C): 72.5 (Mean VP of Antoine & Grain methods)
VP (Pa, 25 deg C) : 9.66E+003 (Mean VP of Antoine & Grain methods)
MP (exp database): -84.7 deg C
BP (exp database): 87.2 deg C
VP (exp database): 6.90E+01 mm Hg (9.20E+003 Pa) at 25 deg C
Water Solubility Estimate from Log Kow (WSKOW vl.42):
Water Solubility at 25 deg C (mg/L): 1191
log Kow used: 2.42 (user entered)
melt pt used: -84.70 deg C
Water Sol (Exper. database match) = 1280 mg/L (25 deg C)
Exper. Ref: HORVATH,AL ET AL. (1999)
Water Sol Estimate from Fragments:
Wat Sol (vl.01 est) = 755.94 mg/L
ECOSAR Class Program (ECOSAR vl. 11):
Class(es) found:
Vinyl/Allyl Halides
Henrys Law Constant (25 deg C) [HENRYWIN v3.20]:
Bond Method: 2.30E-002 atm-m3/mole (2.33E+003 Pa-m3/mole)
Group Method: 1.86E-002 atm-m3/mole (1.88E+003 Pa-m3/mole)

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PEER REVIEW DRAFT - DO NOT CITE OR QUOTE
Exper Database: 9.85E-03 atm-m3/mole (9.98E+002 Pa-m3/mole)
For Henry LC Comparison Purposes:
User-Entered Henry LC: 9.850E-003 atm-m3/mole (9.981E+002 Pa-m3/mole)
Henrys LC [via VP/WSol estimate using User-Entered or Estimated values]:
HLC: 9.319E-003 atm-m3/mole (9.443E+002 Pa-m3/mole)
VP: 69 mm Hg (source: User-Entered)
WS: 1.28E+003 mg/L (source: User-Entered)
Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN vl.10]:
Log Kow used: 2.42 (user entered)
Log Kaw used: -0.395 (user entered)
Log Koa (KOAWIN vl.10 estimate): 2.815
Log Koa (experimental database): 2.990
Probability of Rapid Biodegradation (BIOWIN v4.10):
Biowinl (Linear Model) : 0.3508
Biowin2 (Non-Linear Model) : 0.0119
Expert Survey Biodegradation Results:
Biowin3 (Ultimate Survey Model): 2.3893 (weeks-months)
Biowin4 (Primary Survey Model) : 3.3563 (days-weeks)
MITI Biodegradation Probability:
Biowin5 (MITI Linear Model) : 0.3307
Biowin6 (MITI Non-Linear Model): 0.0408
Anaerobic Biodegradation Probability:
Biowin7 (Anaerobic Linear Model): 0.7186
Ready Biodegradability Prediction: NO
Hydrocarbon Biodegradation (BioHCwin vl.01):
Structure incompatible with current estimation method!
Sorption to aerosols (25 Dec C)[AEROWIN vl.00]:
Vapor pressure (liquid/subcooled): 9.2E+003 Pa (69 mm Hg)
Log Koa (Exp database): 2.990
Kp (particle/gas partition coef. (m3/|ig)):
Mackay model : 3.26E-010
Octanol/air (Koa) model: 2.4E-010
Fraction sorbed to airborne particulates (phi):
Junge-Pankow model : 1.18E-008
Mackay model : 2.61E-008
Octanol/air (Koa) model: 1.92E-008
Atmospheric Oxidation (25 deg C) [AopWin vl.92]:
Hydroxyl Radicals Reaction:
OVERALL OH Rate Constant = 0.8048 E-12 cm3/molecule-sec
Half-Life = 13.291 Days (12-hr day; 1.5E6 OH/cm3)
Ozone Reaction:
OVERALL Ozone Rate Constant = 0.000512 E-17 cm3/molecule-sec
Half-Life = 2239.432 Days (at 7E11 mol/cm3)

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Fraction sorbed to airborne particulates (phi):
1.89E-008 (Junge-Pankow, Mackay avg)
1.92E-008 (Koa method)
Note: the sorbed fraction may be resistant to atmospheric oxidation
Soil Adsorption Coefficient (KOCWIN v2.00):
Koc : 60.7 L/kg (MCI method)
LogKoc: 1.783 (MCI method)
Koc : 125.9 L/kg (Kow method)
LogKoc: 2.100 (Kowmethod)
Experimental Log Koc: 2 (database)
Aqueous Base/Acid-Catalyzed Hydrolysis (25 deg C) [HYDROWIN v2.00]:
Rate constants can NOT be estimated for this structure!
Bioaccumulation Estimates (BCFBAF v3.01):
Log BCF from regression-based method = 1.264 (BCF = 18.35 L/kg wet-wt)
Log Biotransformation Half-life (HL) = 0.0509 days (HL = 1.124 days)
Log BCF Arnot-Gobas method (upper trophic) = 1.375 (BCF = 23.7)
Log BAF Arnot-Gobas method (upper trophic) = 1.375 (BAF = 23.7)
log Kow used: 2.42 (user entered)
Volatilization from Water:
Henry LC: 0.00985 atm-m3/mole (entered by user)
Half-Life from Model River: 1.238 hours
Half-Life from Model Lake : 109.6 hours (4.567 days)
Removal in Wastewater Treatment:
Total removal:	79.58 percent
Total biodegradation: 0.04 percent
Total sludge adsorption: 1.26 percent
Total to Air:	78.28 percent
(using 10000 hr Bio P,A,S)
Level III Fugacity Model:
Mass Amount Half-Life Emissions
(percent) (hr) (kg/hr)
Air 35.4 109 1000
Water 54.2 900 1000
Soil 10.1	1.8e+003 1000
Sediment 0.261 8.1e+003 0
Persistence Time: 147 hr

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