PUBLIC HEALTH ASSESSMENT

EVALUATION OF CURRENT (1990 TO 2003) AND FUTURE CHEMICAL EXPOSURES IN THE VICINITY OF THE OAK RIDGE RESERVATION
U.S. DEPARTMENT OF ENERGY OAK RIDGE RESERVATION
OAK RIDGE, ANDERSON COUNTY, TENNESSEE


TABLES (cont.)

Table 23. Estimated Exposure Doses for Chemicals in Fish Caught in EFPC Compared to Cancer Screening Guidelines

Substance Name

Species

2nd Tier Screening Conc.
(ppm)

EPA’s Oral Cancer Slope Factor (mg/kg/day)-1

Estimated Exposure Dose (mg/kg/day)

Risk

Does the Estimated Exposure Dose Exceed the Cancer Screening Guideline (10-4)?

Subsistence

Recreational

Subsistence

Recreational

Subsistence

Recreational

Inorganics

Arsenic

Crayfish

0.51

1.5

2.0E-04

2.5E-05

3.0E-04

3.7E-05

Yes

No

Arsenic

Sunfish spp.

0.12

1.5

6.6E-05

8.1E-06

9.9E-05

1.2E-05

No

No

Cadmium

Crayfish

3.7

Evaluated for noncarcinogenic effects (see Table 22)

Cadmium

Sunfish spp.

1.7

Evaluated for noncarcinogenic effects (see Table 22)

Chromium

Crayfish

2.9

Evaluated for noncarcinogenic effects (see Table 22)

Chromium

Sunfish spp.

0.64

Evaluated for noncarcinogenic effects (see Table 22)

Organics

Aldrin

Sunfish spp.

ND

17

ND

ND

ND

ND

No

No

Aldrin

Crayfish

0.0012

17

4.9E-07

6.1E-08

8.4E-06

1.0E-06

No

No

Benzo(a)pyrene

Sunfish spp.

ND

7.3

ND

ND

ND

ND

No

No

Benzo(a)pyrene

Crayfish

0.033

7.3

1.3E-05

1.6E-06

9.6E-05

1.2E-05

No

No

Dibenzo(a,h)anthracene

Sunfish spp.

ND

7.3

ND

ND

ND

ND

No

No

Dibenzo(a,h)anthracene

Crayfish

0.037

7.3

1.5E-05

1.8E-06

1.1E-04

1.3E-05

Yes

No

Dieldrin

Crayfish

0.0052

16

2.1E-06

2.5E-07

3.3E-05

4.0E-06

No

No

Dieldrin

Sunfish spp.

0.066

16

2.6E-05

3.2E-06

4.2E-04

5.2E-05

Yes

No

alpha-HCH

Sunfish spp.

ND

6.3

ND

ND

ND

ND

No

No

alpha-HCH

Crayfish

0.0053

6.3

2.1E-06

2.6E-07

1.3E-05

1.6E-06

No

No

Heptachlor epoxide

Crayfish

0.0027

9.1

1.1E-06

1.3E-07

9.7E-06

1.2E-06

No

No

Heptachlor epoxide

Sunfish spp.

0.068

9.1

2.7E-05

3.3E-06

2.5E-04

3.0E-05

Yes

No

Toxaphene

Crayfish

ND

1.1

ND

ND

ND

ND

No

No

Toxaphene

Sunfish spp.

ND

1.1

ND

ND

ND

ND

No

No

Cancer subsistence-level doses were calculated using the following formula:
dose = (second-tier screening concentration×0.065 kg/day×365 days/year×30 years)/(70 kg×(365 days/year×70 years))
Cancer recreational-level doses were calculated using the following formula:
dose = (second-tier screening concentration×0.008 kg/day×365 days/year×30 years)/(70 kg×(365 days/year×70 years))
The second-tier screening concentrations are rounded.
conc. = concentration
ND = not detected
EFPC = East Fork Poplar Creek
ppm = parts per million
mg/kg/day = milligram per kilogram per day
Unknown aquatic = "unknown aquatic animal"

Table 24. Estimated Exposure Doses for Chemicals in Fish Caught in the Clinch River Compared to Noncancer Screening Guidelines

Substance Name

Species

Minimum (ppm)

Maximum (ppm)

2nd Tier Screening Conc.
(ppm)

Noncancer Screening Guideline (mg/kg/day)

Source

Subsistence Estimated Exposure Dose (mg/kg/day)

Does the Subsistence Estimated Exposure Dose Exceed the Noncancer Screening Guideline?

Recreational Estimated Exposure Dose (mg/kg/day)

Does the Recreational Estimated Exposure Dose Exceed the Noncancer Screening Guideline?

Child

Adult

Child

Adult

Child

Adult

Child

Adult

Inorganics

Arsenic

Catfish

0.64

0.64

0.64

0.0003

CMRL

9.8E-04

5.9E-04

Yes

Yes

1.5E-04

7.3E-05

No

No

Arsenic

Sunfish spp.

0.018

1.1

0.79

0.0003

CMRL

1.2E-03

7.4E-04

Yes

Yes

1.8E-04

9.0E-05

No

No

Arsenic

Bass spp.

0.14

0.45

0.37

0.0003

CMRL

5.7E-04

3.4E-04

Yes

Yes

8.5E-05

4.2E-05

No

No

Cadmium

Sunfish spp.

ND

ND

ND

0.0002

CMRL

ND

ND

No

No

ND

ND

No

No

Cadmium

Catfish

ND

ND

ND

0.0002

CMRL

ND

ND

No

No

ND

ND

No

No

Cadmium

Bass spp.

ND

ND

ND

0.0002

CMRL

ND

ND

No

No

ND

ND

No

No

Chromium

Bass spp.

ND

ND

ND

0.003

RfD

ND

ND

No

No

ND

ND

No

No

Chromium

Catfish

0.12

0.406

0.47

0.003

RfD

7.2E-04

4.3E-04

No

No

1.1E-04

5.3E-05

No

No

Chromium

Sunfish spp.

0.044

0.822

0.38

0.003

RfD

5.8E-04

3.5E-04

No

No

8.7E-05

4.3E-05

No

No

Thallium

Bass spp.

ND

ND

ND

0.00007

RfD

ND

ND

No

No

ND

ND

No

No

Thallium

Catfish

0.0025

0.029

0.035

0.00007

RfD

5.3E-05

3.2E-05

No

No

8.0E-06

3.9E-06

No

No

Thallium

Sunfish spp.

0.0035

0.0075

0.0068

0.00007

RfD

1.0E-05

6.3E-06

No

No

1.6E-06

7.7E-07

No

No

Organics

Aldrin

Bass spp.

0.0027

0.0027

0.0027

0.00003

CMRL

4.2E-06

2.5E-06

No

No

6.2E-07

3.1E-07

No

No

Aldrin

Catfish

0.013

0.013

0.013

0.00003

CMRL

2.0E-05

1.2E-05

No

No

3.0E-06

1.5E-06

No

No

Aldrin

Sunfish spp.

0.033

0.051

0.047

0.00003

CMRL

7.3E-05

4.4E-05

Yes

Yes

1.1E-05

5.4E-06

No

No

Dieldrin

Bass spp.

0.00097

0.015

0.0093

0.00005

CMRL

1.4E-05

8.6E-06

No

No

2.1E-06

1.1E-06

No

No

Dieldrin

Catfish

0.00047

0.027

0.021

0.00005

CMRL

3.2E-05

1.9E-05

No

No

4.8E-06

2.4E-06

No

No

Dieldrin

Sunfish spp.

0.0005

0.102

0.085

0.00005

CMRL

1.3E-04

7.9E-05

Yes

Yes

2.0E-05

9.8E-06

No

No

alpha-HCH

Bass spp.

0.0002

0.0014

0.0016

0.008

CMRL

2.5E-06

1.5E-06

No

No

3.8E-07

1.9E-07

No

No

alpha-HCH

Catfish

0.00045

0.013

0.016

0.008

CMRL

2.4E-05

1.4E-05

No

No

3.6E-06

1.8E-06

No

No

alpha-HCH

Sunfish spp.

0.033

0.051

0.047

0.008

CMRL

7.3E-05

4.4E-05

No

No

1.1E-05

5.4E-06

No

No

Heptachlor epoxide

Bass spp.

0.0016

0.008

0.0062

0.000013

RfD

9.5E-06

5.7E-06

No

No

1.4E-06

7.1E-07

No

No

Heptachlor epoxide

Catfish

0.00052

0.013

0.0098

0.000013

RfD

1.5E-05

9.1E-06

Yes

No

2.3E-06

1.1E-06

No

No

Heptachlor epoxide

Sunfish spp.

0.0006

0.051

0.051

0.000013

RfD

7.9E-05

4.8E-05

Yes

Yes

1.2E-05

5.9E-06

No

No

Toxaphene

Bass spp.

ND

ND

ND

0.001

IMRL

ND

ND

No

No

ND

ND

No

No

Toxaphene

Catfish

0.2

0.2

0.2

0.001

IMRL

3.1E-04

1.9E-04

No

No

4.6E-05

2.3E-05

No

No

Toxaphene

Sunfish spp.

0.656

1.024

0.94

0.001

IMRL

1.5E-03

8.8E-04

Yes

No

2.2E-04

1.1E-04

No

No

Noncancer subsistence-level doses were calculated using the following formulas:
child dose = (second-tier screening concentration×0.02 kg/day×365 days/year×6 years)/(13 kg×(365 days/year×6 years))
adult dose = (second-tier screening concentration×0.065 kg/day×365 days/year×30 years)/(70 kg×(365 days/year×30 years))
Noncancer recreational-level doses were calculated using the following formulas:
child dose = (second-tier screening concentration×0.003 kg/day×365 days/year×6 years)/(13 kg×(365 days/year×6 years))
adult dose = (second-tier screening concentration×0.008 kg/day×365 days/year×30 years)/(70 kg×(365 days/year×30 years))
The second-tier screening concentrations are rounded.
CMRL = chronic minimal risk level (ATSDR)
conc. = concentration
IMRL = intermediate minimal risk level (ATSDR)
mg/kg/day = milligram per kilogram per day
ND = not detected
ppm = parts per million
RfD = reference dose (EPA)
spp = species

Table 25. Estimated Exposure Doses for Chemicals in Fish Caught in the Clinch River Compared to Cancer Screening Guidelines

Substance Name

Species

2nd Tier Screening Conc.
(ppm)

EPA’s Oral Cancer Slope Factor (mg/kg/day)-1

Estimated Exposure Dose (mg/kg/day)

Risk

Does the Estimated Exposure Dose Exceed the Cancer Screening Guideline (10-4)?

Subsistence

Recreational

Subsistence

Recreational

Subsistence

Recreational

Inorganics

Arsenic

Catfish

0.64

1.5

2.5E-04

3.1E-05

3.8E-04

4.7E-05

Yes

No

Arsenic

Sunfish spp.

0.79

1.5

3.2E-04

3.9E-05

4.7E-04

5.8E-05

Yes

No

Arsenic

Bass spp.

0.37

1.5

1.5E-04

1.8E-05

2.2E-04

2.7E-05

Yes

No

Cadmium

Sunfish spp.

ND

NA

ND

ND

ND

ND

No

No

Cadmium

Catfish

ND

NA

ND

ND

ND

ND

No

No

Cadmium

Bass spp.

ND

NA

ND

ND

ND

ND

No

No

Chromium

Bass spp.

ND

NA

ND

ND

ND

ND

No

No

Chromium

Catfish

0.47

Evaluated for noncarcinogenic effects (see Table 24)

Chromium

Sunfish spp.

0.38

Evaluated for noncarcinogenic effects (see Table 24)

Thallium

Bass spp.

ND

NA

ND

ND

ND

ND

No

No

Thallium

Catfish

0.035

Evaluated for noncarcinogenic effects (see Table 24)

Thallium

Sunfish spp.

0.0068

Evaluated for noncarcinogenic effects (see Table 24)

Organics

Aldrin

Bass spp.

0.0027

17

1.1E-06

1.3E-07

1.8E-05

2.2E-06

No

No

Aldrin

Catfish

0.013

17

5.2E-06

6.4E-07

8.8E-05

1.1E-05

No

No

Aldrin

Sunfish spp.

0.051

17

1.9E-05

2.3E-06

3.2E-04

3.9E-05

Yes

No

Dieldrin

Bass spp.

0.015

16

3.7E-06

4.5E-07

5.9E-05

7.3E-06

No

No

Dieldrin

Catfish

0.027

16

8.3E-06

1.0E-06

1.3E-04

1.6E-05

Yes

No

Dieldrin

Sunfish spp.

0.102

16

3.4E-05

4.2E-06

5.4E-04

6.7E-05

Yes

No

alpha-HCH

Bass spp.

0.0014

6.3

6.6E-07

8.1E-08

4.1E-06

5.1E-07

No

No

alpha-HCH

Catfish

0.013

6.3

6.2E-06

7.6E-07

3.9E-05

4.8E-06

No

No

alpha-HCH

Sunfish spp.

0.051

6.3

1.9E-05

2.3E-06

1.2E-04

1.5E-05

Yes

No

Heptachlor epoxide

Bass spp.

0.008

9.1

2.5E-06

3.0E-07

2.2E-05

2.8E-06

No

No

Heptachlor epoxide

Catfish

0.013

9.1

3.9E-06

4.8E-07

3.5E-05

4.4E-06

No

No

Heptachlor epoxide

Sunfish spp.

0.051

9.1

2.0E-05

2.5E-06

1.9E-04

2.3E-05

Yes

No

Toxaphene

Bass spp.

ND

1.1

ND

ND

ND

ND

No

No

Toxaphene

Catfish

0.2

1.1

8.0E-05

9.8E-06

8.8E-05

1.1E-05

No

No

Toxaphene

Sunfish spp.

1.024

1.1

3.8E-04

4.6E-05

4.1E-04

5.1E-05

Yes

No

Cancer subsistence-level doses were calculated using the following formula:
dose = (second-tier screening concentration×0.065 kg/day×365 days/year×30 years)/(70 kg×(365 days/year×70 years))
Cancer recreational-level doses were calculated using the following formula:
dose = (second-tier screening concentration×0.008 kg/day×365 days/year×30 years)/(70 kg×(365 days/year×70 years))
The second-tier screening concentrations are rounded.
conc. = concentration
mg/kg/day = milligram per kilogram per day
NA = not available
ND = not detected
ppm = parts per million
spp = species

Table 26. Estimated Exposure Doses for Chemicals in Fish Caught in WBR Compared to Noncancer Screening Guidelines

Substance Name

Species

Minimum (ppm)

Maximum (ppm)

2nd Tier Screening Conc.
(ppm)

Noncancer Screening Guideline (mg/kg/day)

Source

Subsistence Estimated Exposure Dose (mg/kg/day)

Does the Subsistence Estimated Exposure Dose Exceed the Noncancer Screening Guideline?

Recreational Estimated Exposure Dose (mg/kg/day)

Does the Recreational Estimated Exposure Dose Exceed the Noncancer Screening Guideline?

Child

Adult

Child

Adult

Child

Adult

Child

Adult

Inorganics

Arsenic

Catfish

0.012

1.1

0.66

0.0003

CMRL

1.0E-03

6.1E-04

Yes

Yes

1.5E-04

7.5E-05

No

No

Arsenic

Unknown

0.1

0.46

0.30

0.0003

CMRL

4.6E-04

2.8E-04

Yes

No

6.9E-05

3.4E-05

No

No

Arsenic

Bass spp.

0.008

0.32

0.26

0.0003

CMRL

3.9E-04

2.4E-04

Yes

No

5.9E-05

2.9E-05

No

No

Arsenic

Sunfish spp.

0.006

0.83

0.32

0.0003

CMRL

4.9E-04

3.0E-04

Yes

No

7.4E-05

3.7E-05

No

No

Cadmium

Catfish

ND

ND

ND

0.0002

CMRL

ND

ND

No

No

ND

ND

No

No

Cadmium

Sunfish spp.

ND

ND

ND

0.0002

CMRL

ND

ND

No

No

ND

ND

No

No

Cadmium

Unknown

0.05

0.06

0.062

0.0002

CMRL

9.5E-05

5.8E-05

No

No

1.4E-05

7.1E-06

No

No

Chromium

Catfish

0.043

0.28

0.33

0.003

RfD

5.1E-04

3.1E-04

No

No

7.6E-05

3.8E-05

No

No

Chromium

Sunfish spp.

0.12

0.8

0.46

0.003

RfD

7.0E-04

4.2E-04

No

No

1.1E-04

5.2E-05

No

No

Chromium

Unknown

0.1

44.6

16

0.003

RfD

2.5E-02

1.5E-02

Yes

Yes

3.7E-03

1.8E-03

Yes

No

Thallium

Catfish

0.0025

0.006

0.0067

0.00007

RfD

1.0E-05

6.2E-06

No

No

1.6E-06

7.7E-07

No

No

Thallium

Sunfish spp.

0.0045

0.022

0.014

0.00007

RfD

2.2E-05

1.3E-05

No

No

3.2E-06

1.6E-06

No

No

Organics

Aldrin

Unknown

ND

ND

ND

0.00003

CMRL

ND

ND

No

No

ND

ND

No

No

Aldrin

Sunfish spp.

0.0056

0.048

0.049

0.00003

CMRL

7.5E-05

4.5E-05

Yes

Yes

1.1E-05

5.6E-06

No

No

Aldrin

Catfish

0.00083

0.018

0.013

0.00003

CMRL

2.0E-05

1.2E-05

No

No

3.0E-06

1.5E-06

No

No

Aldrin

Bass spp.

0.00054

0.014

0.009

0.00003

CMRL

1.4E-05

8.4E-06

No

No

2.1E-06

1.0E-06

No

No

Dieldrin

Unknown

ND

ND

ND

0.00005

CMRL

ND

ND

No

No

ND

ND

No

No

Dieldrin

Sunfish spp.

0.00148

0.096

0.079

0.00005

CMRL

1.2E-04

7.3E-05

Yes

Yes

1.8E-05

9.0E-06

No

No

Dieldrin

Catfish

0.00044

0.036

0.018

0.00005

CMRL

2.7E-05

1.6E-05

No

No

4.1E-06

2.0E-06

No

No

Dieldrin

Bass spp.

0.0005

0.03

0.013

0.00005

CMRL

2.0E-05

1.2E-05

No

No

3.0E-06

1.5E-06

No

No

alpha-HCH

Unknown

ND

ND

ND

0.008

CMRL

ND

ND

No

No

ND

ND

No

No

alpha-HCH

Catfish

0.01

0.01

0.01

0.008

CMRL

1.5E-05

9.3E-06

No

No

2.3E-06

1.1E-06

No

No

alpha-HCH

Bass spp.

0.01

0.02

0.022

0.008

CMRL

3.4E-05

2.0E-05

No

No

5.1E-06

2.5E-06

No

No

alpha-HCH

Sunfish spp.

0.0056

0.048

0.049

0.008

CMRL

7.5E-05

4.5E-05

No

No

1.1E-05

5.6E-06

No

No

Heptachlor epoxide

Unknown

ND

ND

ND

0.000013

RfD

ND

ND

No

No

ND

ND

No

No

Heptachlor epoxide

Sunfish spp.

0.0013

0.048

0.048

0.000013

RfD

7.4E-05

4.5E-05

Yes

Yes

1.1E-05

5.5E-06

No

No

Heptachlor epoxide

Catfish

0.0012

0.018

0.0096

0.000013

RfD

1.5E-05

8.9E-06

Yes

No

2.2E-06

1.1E-06

No

No

Heptachlor epoxide

Bass spp.

0.00044

0.016

0.007

0.000013

RfD

1.1E-05

6.5E-06

No

No

1.6E-06

8.0E-07

No

No

TCDD

Unknown

8.7E-06

8.7E-06

9E-06

1E-09

CMRL

1.3E-08

8.1E-09

Yes

Yes

2.0E-09

9.9E-10

Yes

No

Toxaphene

Bass spp.

0.24

0.24

0.24

0.001

IMRL

3.7E-04

2.2E-04

No

No

5.5E-05

2.7E-05

No

No

Toxaphene

Catfish

0.12

0.28

0.31

0.001

IMRL

4.8E-04

2.9E-04

No

No

7.2E-05

3.6E-05

No

No

Toxaphene

Sunfish spp.

0.088

0.96

0.98

0.001

IMRL

1.5E-03

9.1E-04

Yes

No

2.3E-04

1.1E-04

No

No

Noncancer subsistence-level doses were calculated using the following formulas:
child dose = (second-tier screening concentration×0.02 kg/day×365 days/year×6 years)/(13 kg×(365 days/year×6 years))
adult dose = (second-tier screening concentration×0.065 kg/day×365 days/year×30 years)/(70 kg×(365 days/year×30 years))
Noncancer recreational-level doses were calculated using the following formulas:
child dose = (second-tier screening concentration×0.003 kg/day×365 days/year×6 years)/(13 kg×(365 days/year×6 years))
adult dose = (second-tier screening concentration×0.008 kg/day×365 days/year×30 years)/(70 kg×(365 days/year×30 years))
The second-tier screening concentrations are rounded.
CMRL = chronic minimal risk level (ATSDR)
conc. = concentration
IMRL = intermediate minimal risk level (ATSDR)
mg/kg/day = milligram per kilogram per day
ND = not detected
ppm = parts per million
RfD = reference dose (EPA)
spp = species
WBR = Watts Bar Reservoir
Unknown = "unknown aquatic animal"

Table 27. Estimated Exposure Doses for Chemicals in Fish Caught in WBR Compared to Cancer Screening Guidelines

 Substance Name

Species

2nd Tier Screening Conc.
(ppm)

EPA’s Oral Cancer Slope Factor (mg/kg/day)-1

Estimated Exposure Dose (mg/kg/day)

Risk

Does the Estimated Exposure Dose Exceed the Cancer Screening Guideline (10-4)?

Subsistence

Recreational

Subsistence

Recreational

Subsistence

Recreational

Inorganics

Arsenic

Catfish

0.66

1.5

2.6E-04

3.2E-05

3.9E-04

4.8E-05

Yes

No

Arsenic

Unknown aquatic

0.30

1.5

1.2E-04

1.5E-05

1.8E-04

2.2E-05

Yes

No

Arsenic

Bass spp.

0.26

1.5

1.0E-04

1.3E-05

1.5E-04

1.9E-05

Yes

No

Arsenic

Sunfish spp.

0.32

1.5

1.3E-04

1.6E-05

1.9E-04

2.4E-05

Yes

No

Cadmium

Catfish

ND

NA

ND

ND

ND

ND

No

No

Cadmium

Sunfish spp.

ND

NA

ND

ND

ND

ND

No

No

Cadmium

Unknown aquatic

0.062

Evaluated for noncarcinogenic effects (see Table 26)

Chromium

Catfish

0.33

Evaluated for noncarcinogenic effects (see Table 26)

Chromium

Sunfish spp.

0.46

Evaluated for noncarcinogenic effects (see Table 26)

Chromium

Unknown aquatic

16

Evaluated for noncarcinogenic effects (see Table 26)

Thallium

Catfish

0.0067

Evaluated for noncarcinogenic effects (see Table 26)

Thallium

Sunfish spp.

0.014

Evaluated for noncarcinogenic effects (see Table 26)

Organics

Aldrin

Unknown aquatic

ND

17

ND

ND

ND

ND

No

No

Aldrin

Sunfish spp.

0.049

17

1.9E-05

2.4E-06

3.3E-04

4.0E-05

Yes

No

Aldrin

Catfish

0.013

17

5.2E-06

6.3E-07

8.8E-05

1.1E-05

No

No

Aldrin

Bass spp.

0.009

17

3.6E-06

4.4E-07

6.1E-05

7.5E-06

No

No

Dieldrin

Unknown aquatic

ND

16

ND

ND

ND

ND

No

No

Dieldrin

Sunfish spp.

0.079

16

3.1E-05

3.9E-06

5.0E-04

6.2E-05

Yes

No

Dieldrin

Catfish

0.018

16

7.1E-06

8.7E-07

1.1E-04

1.4E-05

Yes

No

Dieldrin

Bass spp.

0.013

16

5.2E-06

6.3E-07

8.2E-05

1.0E-05

No

No

alpha-HCH

Unknown aquatic

ND

6.3

ND

ND

ND

ND

No

No

alpha-HCH

Catfish

0.01

6.3

4.0E-06

4.9E-07

2.5E-05

3.1E-06

No

No

alpha-HCH

Bass spp.

0.022

6.3

8.8E-06

1.1E-06

5.5E-05

6.8E-06

No

No

alpha-HCH

Sunfish spp.

0.049

6.3

1.9E-05

2.4E-06

1.2E-04

1.5E-05

Yes

No

Heptachlor epoxide

Unknown aquatic

ND

9.1

ND

ND

ND

ND

No

No

Heptachlor epoxide

Sunfish spp.

0.048

9.1

1.9E-05

2.4E-06

1.7E-04

2.1E-05

Yes

No

Heptachlor epoxide

Catfish

0.0096

9.1

3.8E-06

4.7E-07

3.5E-05

4.3E-06

No

No

Heptachlor epoxide

Bass spp.

0.007

9.1

2.8E-06

3.4E-07

2.5E-05

3.1E-06

No

No

TCDD

Unknown aquatic

9E-06

150,000

3.5E-09

4.3E-10

5.2E-04

6.4E-05

Yes

No

Toxaphene

Bass spp.

0.24

1.1

9.6E-05

1.2E-05

1.1E-04

1.3E-05

Yes

No

Toxaphene

Catfish

0.31

1.1

1.2E-04

1.5E-05

1.4E-04

1.7E-05

Yes

No

Toxaphene

Sunfish spp.

0.98

1.1

3.9E-04

4.8E-05

4.3E-04

5.3E-05

Yes

No

Cancer subsistence-level doses were calculated using the following formula:
adult dose = (second-tier screening concentration×0.065 kg/day×365 days/year×30 years)/(70 kg×(365 days/year×70 years))
Cancer recreational-level doses were calculated using the following formula:
adult dose = (second-tier screening concentration×0.008 kg/day×365 days/year×30 years)/(70 kg×(365 days/year×70 years))
The second-tier screening concentrations are rounded.
conc. = concentration
mg/kg/day = milligram per kilogram per day
NA = not available
ND = not detected
ppm = parts per million
spp = species
Unknown aquatic = "unknown aquatic animal"
WBR = Watts Bar Reservoir

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