Species
Study
Test
Endpoint
Control
Value
EC50
Standard
Deviation
EC20
EC10
Snail,
Campeloma
decisum
(
Test
1)
Arthur
and
Leonard
1970
LC
Survival
0.925
14.50
0.192
8.73
7.01
Snail,
Campeloma
decisum
(
Test
2)
Arthur
and
Leonard
1970
LC
Survival
0.875
11.80
0.339
10.94
9.16
Cladoceran,
Ceriodaphnia
dubia
(
Cinch
River)
Belanger
et
al.
1989
LC
Reproduction
16.60
33.6
1.15
19.36
14.03
Cladoceran,

Daphnia
pulex
Winner
1985
LC
Survival
1.00
4.57
0.260
2.83
2.24
Cladoceran,

Daphnia
pulex
Winner
1985
LC
Survival
0.900
11.3
0.111
9.16
8.28
Caddisfly,
Clistoronia
magnifica
Nebeker
et
al.
1984b
LC
Emergence
(
adult
1st
gen)
0.750
20.0
0.300
7.67
5.63
Bluegill
(
larval),

Lepomis
macrochirus
Benoit
1975
ELS
Survival
0.880
39.8
0.250
27.15
21.60
Species
Study
Test
Endpoint
Control
Value
EC50
Slope
EC20
EC10
Cladoceran,
Ceriodaphnia
dubia
Carlson
et
al.
1986
LC
Reproduction
13.10
14.6
1.36
9.17
7.28
Cladoceran,

Daphnia
magna
Chapman
et
al.
Manuscript
LC
Reproduction
171.5
16.6
1.40
12.58
10.63
Cladoceran,

Daphnia
magna
Chapman
et
al.
Manuscript
LC
Reproduction
192.1
28.4
1.59
19.89
16.34
Cladoceran,

Daphnia
magna
Chapman
et
al.
Manuscript
LC
Reproduction
88.0
15.8
1.00
6.06
3.64
Rainbow
trout,
Oncorhynchus
mykiss
Seim
et
al.
1984
ELS
Biomass
137.6
40.7
1.69
27.77
22.16
Rainbow
trout,
Oncorhynchus
mykiss
Besser
et
al.
2001
ELS
Biomass
1224
29.2
1.99
20.32
16.74
Chinook
salmon,

Oncorhynchus
tshawytscha
Chapman
1975,
1982
ELS
Biomass
0.901
9.55
1.27
5.92
4.47
Fathead
minnow,

Pimephales
promelas
Lind
et
al.
manuscript
ELS
Biomass
108.4
11.4
4.00
9.38
8.67
Appendix
H.
Analyses
of
Chronic
Data
The
following
pages
contain
figures
and
other
information
related
to
the
regression
and
probability
distribution
analyses
that
were
performed
to
calculate
chronic
EC20s.
The
initial
parameter
estimates
are
shown
in
the
tables
below.
In
the
figures
that
follow,
circles
denote
measured
responses
and
solid
lines
denote
estimated
regression
lines.
Initial
Estimates
Initial
Estimates
Probability
Distribution
Analysis
Logistic
Regression
Analysis
H­
1
