Nu-West Proposal for Site- Specific Selenium Criteria Idaho DEQ - - PowerPoint PPT Presentation

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Nu-West Proposal for Site- Specific Selenium Criteria Idaho DEQ - - PowerPoint PPT Presentation

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Nu-West Proposal for Site- Specific Selenium Criteria Idaho DEQ Rulemaking June 13, 2017 Boise, Idaho prepared in collaboration with 1 6/13/2017 Outline for Nu-West SSC Proposal I. Definition of Sites a. Upper Blackfoot River b.

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Nu-West Proposal for Site- Specific Selenium Criteria

Idaho DEQ Rulemaking June 13, 2017 Boise, Idaho

6/13/2017 1

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Outline for Nu-West SSC Proposal

I. Definition of “Sites”

a. Upper Blackfoot River b. Georgetown Creek

II. Resident Fish Species

a. Upper Blackfoot River b. Georgetown Creek

III. Nu-West Proposed Tissue SSC

a. Upper Blackfoot River b. Georgetown Creek

IV. Protectiveness of Site-Specific Criterion

a. Summary of toxicity data and field surveys

V. Water-Column Element

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I. Definition of Sites

Per IDAPA 58.01.02

a. Subsection of Blackfoot Sub-basin. Blackfoot River – confluence of Lanes and Diamond Creeks to Blackfoot Reservoir (unit US-10), and all tributaries thereof b. Georgetown Creek – source to mouth (unit B-22), and all tributaries thereof

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I. Definition of Sites

Delineate Georgetown

Upper Blackfoot River Georgetown Creek

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Family Genus Species Common Name

  • O. mykiss

Rainbow trout

  • O. clarkii bouvieri Yellowstone cutthroat trout

Salvelinus

  • S. fontinalis

Brook trout

  • R. cataractae

Longnose dace

  • R. osculus

Speckled dace Richardsonius

  • R. balteatus

Redside shiner Gila

  • G. atraria

Utah chub Lepidomeda

  • L. copei
  • N. leatherside chub
  • C. ardens

Utah sucker

  • C. platyrhynchus Mountain sucker
  • C. bairdii

Mottled sculpin

  • C. beldingii

Paiute sculpin Catostomidae Catostomus Cyprinidae Table 1. Resident fish species that occur in the Upper Blackfoot River watershed. Salmonidae Oncorhynchus Rhinichthys Cottidae Cottus

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II. Resident Fish Species – UBR Watershed

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Program Duration Salmonidae Cyprinidae Catostomidae Cottidae Idaho Department of Fish and Game - Surveys 1959- 2007

   

Idaho Department of Fish and Game - Stocking 1967- 2016

IDEQ BURP Program 1993- 2016

   

U.S. Forest Service - Surveys 2000- 2002

   

GEI and Arcadis 2013- 2016

   

Families Surveys

II. Resident Fish Species – UBR Watershed

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Program Duration Salmonidae Cyprinidae Catostomidae Cottidae Idaho Department of Fish and Game - Surveys 1959- 2007

   

Idaho Department of Fish and Game - Stocking 1967- 2016

IDEQ BURP Program 1993- 2016

   

U.S. Forest Service - Surveys 2000- 2002

   

GEI and Arcadis 2013- 2016

   

Families Surveys

II. Resident Fish Species – UBR Watershed

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Program Duration Salmonidae Cyprinidae Catostomidae Cottidae Idaho Department of Fish and Game - Surveys 1959- 2007

   

Idaho Department of Fish and Game - Stocking 1967- 2016

IDEQ BURP Program 1993- 2016

   

U.S. Forest Service - Surveys 2000- 2002

   

GEI and Arcadis 2013- 2016

   

Families Surveys

II. Resident Fish Species – UBR Watershed

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Program Duration Salmonidae Cyprinidae Catostomidae Cottidae Idaho Department of Fish and Game - Surveys 1959- 2007

   

Idaho Department of Fish and Game - Stocking 1967- 2016

IDEQ BURP Program 1993- 2016

   

U.S. Forest Service - Surveys 2000- 2002

   

GEI and Arcadis 2013- 2016

   

Families Surveys

II. Resident Fish Species – UBR Watershed

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Program Duration Salmonidae Cyprinidae Catostomidae Cottidae Idaho Department of Fish and Game - Surveys 1959- 2007

   

Idaho Department of Fish and Game - Stocking 1967- 2016

IDEQ BURP Program 1993- 2016

   

U.S. Forest Service - Surveys 2000- 2002

   

GEI and Arcadis 2013- 2016

   

Families Surveys

= > 30,000,000 stocking results (1967-2016) > 40,000 survey results (1959-2016) II. Resident Fish Species – UBR Watershed

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II. Resident Fish Species – Georgetown Cr.

Family Genus Species Common Name

  • O. mykiss

Rainbow trout

  • O. clarkii utah

Bonneville cutthroat trout Salvelinus

  • S. fontinalis

Brook trout Salmo

  • S. trutta

Brown trout Oncorhynchus Resident fish species that occur in the Georgetown Creek watershed. Salmonidae

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II. Resident Fish Species – Georgetown Cr.

Surveys Dates Data Source Streams Total Fish Count Fish Species Idaho Department of Fish and Game - Surveys1 1994, 1997, 2003, 2007 Teuscher and Capurso (2007) Left Hand Fork, Georgetown Creek Not Reported Brook trout, cutthroat trout, cutthroat/rainbow hybrids, rainbow trout. Idaho Department of Fish and Game - Stocking Records 1968-2011 IDFG (2017) Left Hand Fork, Georgetown Creek 81,923 Brook trout, cutthroat trout, rainbow trout. Idaho Department of Environmental Quality Surveys 1997, 2012, 2013 IDEQ (2017) Left Hand Fork, Georgetown Creek 58 Brook trout, cutthroat trout, rainbow trout, brown trout 1994 Cowley (1994) Georgetown Creek Upper: 9 Lower: Not Reported Brook trout, cutthroat trout, cutthroat/rainbow hybrids, rainbow trout. 2000, 2001, 2007 USFS (2003); Teuscher and Capurso (2007) Left Hand Fork, Georgetown Creek Not Reported Brook trout, cutthroat/rainbow hybrids, rainbow trout. GEI and Arcadis 2015-2016 GEI (2016); Arcadis (2017) Left Hand Fork, Georgetown Creek 661 Brook trout, Cutthroat trout, Cutthroat/Rainbow hybrids, Rainbow trout. US Forest Service Surveys1

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  • III. Site-Specific Tissue Elements

Fish Tissue Se (mg/kg dw)

5 10 15 20 25 30

Acipenser Lepomis Salmo Oncorhyncus

1 2 3 4 1 2 3 4 1 2 3 4 Rank Rank Rank

Whole-Body Muscle Egg/Ovary

Nu-West Proposed Site-Specific Tissue Criteria

SSC = 11.6 mg/kg dw (both Sites) SSC = 14.3 mg/kg dw (both Sites) SSC = 25.3 mg/kg dw (UBR) 21.0 mg/kg dw (Georgetown)

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Default SSC Default SSC Default SSC 15.1 25.3 8.5 11.6 11.3 14.3 Table 3. IDEQ proposed aquatic life selenium criteria values (default) and Nu-West proposed site-specific criteria (SSC) values. Fish Tissue (mg/kg dw) Egg-Ovary1,2 Whole Body,2,3 Muscle2,3

Final USEPA (2016) Oncorhynchus Chronic Values

  • III. Site-Specific Tissue Elements

a. Upper Blackfoot River

IDEQ proposed aquatic life selenium criteria values (default) and Nu- West proposed site-specific criteria (SSC) values.

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  • III. Site-Specific Tissue Elements

Default SSC Default SSC Default SSC 15.1 25.3 8.5 11.6 11.3 14.3

Notes:

  • 1. Egg/ovary supersedes any whole-body, muscle, or water column element when fish egg/ovary

concentrations are measured.

Table 3. IDEQ proposed aquatic life selenium criteria values (default) and Nu-West proposed site-specific criteria (SSC) values. Fish Tissue (mg/kg dw) Egg-Ovary1,2 Whole Body,2,3 Muscle2,3

a. Upper Blackfoot River

IDEQ proposed aquatic life selenium criteria values (default) and Nu- West proposed site-specific criteria (SSC) values.

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  • III. Site-Specific Tissue Elements

Default SSC Default SSC Default SSC 15.1 25.3 8.5 11.6 11.3 14.3

Notes:

  • 1. Egg/ovary supersedes any whole-body, muscle, or water column element when fish egg/ovary

concentrations are measured.

  • 2. Frequency: Average not to be exceeded.

Table 3. IDEQ proposed aquatic life selenium criteria values (default) and Nu-West proposed site-specific criteria (SSC) values. Fish Tissue (mg/kg dw) Egg-Ovary1,2 Whole Body,2,3 Muscle2,3

a. Upper Blackfoot River

IDEQ proposed aquatic life selenium criteria values (default) and Nu- West proposed site-specific criteria (SSC) values.

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  • III. Site-Specific Tissue Elements

Default SSC Default SSC Default SSC 15.1 25.3 8.5 11.6 11.3 14.3

Notes:

  • 1. Egg/ovary supersedes any whole-body, muscle, or water column element when fish egg/ovary

concentrations are measured.

  • 2. Frequency: Average not to be exceeded.
  • 3. Fish whole-body or muscle tissue supersedes water column element when both fish tissue

and water concentrations are measured.

Table 3. IDEQ proposed aquatic life selenium criteria values (default) and Nu-West proposed site-specific criteria (SSC) values. Fish Tissue (mg/kg dw) Egg-Ovary1,2 Whole Body,2,3 Muscle2,3

a. Upper Blackfoot River

IDEQ proposed aquatic life selenium criteria values (default) and Nu- West proposed site-specific criteria (SSC) values.

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Default SSC Default SSC Default SSC 15.1 21.0 8.5 11.6 11.3 14.3 IDEQ proposed aquatic life selenium criteria values (default) and Nu- West proposed site-specific criteria (SSC) values. Fish Tissue (mg/kg dw) Egg-Ovary1,2 Whole Body3,2 Muscle3,2

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  • III. Site-Specific Tissue Elements

a. Georgetown Creek

Final USEPA (2016) Oncorhynchus Chronic Values Final USEPA (2016) Salmo Chronic Value

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  • III. Site-Specific Tissue Elements

a. Georgetown Creek

Default SSC Default SSC Default SSC 15.1 21.0 8.5 11.6 11.3 14.3

Notes:

  • 1. Egg/ovary supersedes any whole-body, muscle, or water column element when fish

egg/ovary concentrations are measured.

  • 2. Frequency: Average not to be exceeded.
  • 3. Fish whole-body or muscle tissue supersedes water column element when both fish tissue

and water concentrations are measured.

IDEQ proposed aquatic life selenium criteria values (default) and Nu- West proposed site-specific criteria (SSC) values. Fish Tissue (mg/kg dw) Egg-Ovary1,2 Whole Body3,2 Muscle3,2

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Genus Species SMCV (mg Se/kg dw E/O) GMCV (mg Se/kg dw E/O) Rainbow Trout1,2,3 24.5 Cutthroat Trout4,5 26.2

Notes:

4Rudolph et al. (2008) 5Nautilus Environmental (2011)

Maternal Transfer Reproductive Toxicity Studies for Oncorhynchus (from EPA 2016) Oncorhynchus 25.3

1Holm (2002) 2Holm et al. (2003) 3Holm et al. (2005) 6/13/2017 20

a. Salmonidae Family i. Oncorhynchus Genus

Proposed SSC (for Upper Blackfoot River) = USEPA’s final chronic value for Oncorhynchus

6USEPA (2016) Final Chronic Value

6 6

  • IV. Protectiveness of Tissue-Based SSC
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Family Genus Species Common Name SSC Protective

  • f Resident?
  • O. mykiss

Rainbow trout

  • O. clarkii bouvieri Yellowstone cutthroat trout

Salvelinus

  • S. fontinalis

Brook trout

  • R. cataractae

Longnose dace

  • R. osculus

Speckled dace Richardsonius

  • R. balteatus

Redside shiner Gila

  • G. atraria

Utah chub Lepidomeda

  • L. copei
  • N. leatherside chub
  • C. ardens

Utah sucker

  • C. platyrhynchus Mountain sucker
  • C. bairdii

Mottled sculpin

  • C. beldingii

Paiute sculpin Resident fish species that occur in the Upper Blackfoot River watershed. Salmonidae Oncorhynchus Cyprinidae Rhinichthys Catostomidae Catostomus Cottidae Cottus

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USEPA (2016) & other pertinent toxicity info

  • IV. Protectiveness of Tissue-Based SSC
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b. Salmonidae Family iii. Salvelinus Genus

Maternal Transfer Reproductive Toxicity Studies for Salvelinus (from EPA 2016) Genus Species SMCV (mg Se/kg dw E/O) GMCV (mg Se/kg dw E/O)

Dolly Varden1 56.2 Brook Trout2 >49

1 Golder 2009 2 Holm et al. 2005

Salvelinus 56.2

3 USEPA (2016) Final Chronic Value

3 3

  • IV. Protectiveness of Tissue-Based SSC
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c. Cyprinid Family i. Pimephales Genus

ii. Other data from EPA (2016)

  • “Available studies (Hamilton et al (1998), NAMC (2008), Presser (2013), USGS (2012))

indicate that native cyprinids as a family are not expected to be overly sensitive to selenium when compared with other families of freshwater fish.” (p.

  • “Cyprinids appear to have a tolerance to selenium that is greater than salmonid species.”

(p. E-48)

  • Cyprinids will be protected by a criterion based on salmonid sensitivity (p. E-48)

Genus Species SMCV3 (mg Se/kg dw) GMCV (mg Se/kg dw) <25.6 (E/O)1 35-65 (WB)2

Notes:

2 GEI (2008) 3 USEPA (2016)

  • - Not calculated due to high uncertainty in final chronic value. However, cyprinids were determined by EPA (2016) to be

less sensitive than salmonids.

Maternal Transfer Reproductive Toxicity Studies for Pimephales (from EPA 2016) Pimephales Fathead Minnow

  • 1 Schultz and Hermanutz (1990). Value not used in EPA's 5th percentile calculation due to high uncertainty; but counted

towards N=15.

  • IV. Protectiveness of Tissue-Based SSC
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c. Cyprinid Family i. Pimephales Genus

ii. Other data from EPA (2016)

  • “Available studies (Hamilton et al (1998), NAMC (2008), Presser (2013), USGS (2012)) indicate

that native cyprinids as a family are not expected to be overly sensitive to selenium when compared with other families of freshwater fish.” (p. E-41)

  • “Cyprinids appear to have a tolerance to selenium that is greater than salmonid species.” (p. E-

48)

  • Cyprinids will be protected by a criterion based on salmonid sensitivity (p. E-48)

Genus Species SMCV3 (mg Se/kg dw) GMCV (mg Se/kg dw) <25.6 (E/O)1 35-65 (WB)2

Notes:

2 GEI (2008) 3 USEPA (2016)

  • - Not calculated due to high uncertainty in final chronic value. However, cyprinids were determined by EPA (2016) to be

less sensitive than salmonids.

Maternal Transfer Reproductive Toxicity Studies for Pimephales (from EPA 2016) Pimephales Fathead Minnow

  • 1 Schultz and Hermanutz (1990). Value not used in EPA's 5th percentile calculation due to high uncertainty; but counted

towards N=15.

  • IV. Protectiveness of Tissue-Based SSC
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d. Catostomidae Family i. Catostomus Genus

Genus Species SMCV2 (mg Se/kg dw E/O) GMCV (mg Se/kg dw E/O) Catostomus White Sucker1 >40.3

  • Notes:

1de Rosemound et al. (2005) 2 USEPA (2016)

  • - Not calculated by EPA (2016) because no fish/eggs collected from reference site.

Maternal Transfer Reproductive Toxicity Studies for Catostomidae (from EPA 2016)

  • IV. Protectiveness of Tissue-Based SSC

ii. Other data from EPA (2016)

  • “Species such as stoneroller species, creek chub, blackside dace, and white sucker have

documented tolerance to selenium and can be found in selenium contaminated systems (NAMC 2008, Presser 2012).” (p. K-19)

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c. Cottidae Family i. Cottus Genus

  • IV. Protectiveness of Tissue-Based SSC
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c. Cottidae Family i. Cottus Genus

  • IV. Protectiveness of Tissue-Based SSC
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c. Cottidae Family i. Cottus Genus

ii. Other relevant data on sculpin sensitivity

  • Formation (2012): Sculpin abundance, density, age-classes not significantly related to

water-borne or tissue Se concentrations.

  • UBR Field Data: GEI (2013, 2014, 2015) & Arcadis (2016)
  • NAMC (2008) sculpin population densities not significantly related to surface-water Se or

sculpin-tissue Se (up to > 39 µg/L or > 25 mg/kg WB dw)

Maternal Transfer Reproductive Toxicity Studies for Cottidae Genus Species SMCV (mg Se/kg dw E/O) GMCV (mg Se/kg dw E/O)

Cottus Slimy Sculpin1 >19.4 ± 1.8

  • Notes:

1Lo et al. (2014)

  • - Study not presented in EPA (2016)
  • IV. Protectiveness of Tissue-Based SSC
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Sculpin Whole Body (mg Se/kg dw)

5 10 15 20 25 30

Scuplin Density (#/km)

2000 4000 6000 8000 10000 12000 14000 16000 18000 R2 = 0.0004 p-value = 0.88

  • IV. Protectiveness of Tissue-Based SSC

UBR Watershed1 Salt River Watershed2

Notes:

1 GEI (2016a,b); Arcadis (2017a,b) 2 Formation and HabiTech (2012)

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Family Genus Species Common Name SSC Protective

  • f Resident?
  • O. mykiss

Rainbow trout

  • O. clarkii bouvieri Yellowstone cutthroat trout

Salvelinus

  • S. fontinalis

Brook trout

  • R. cataractae

Longnose dace

  • R. osculus

Speckled dace Richardsonius

  • R. balteatus

Redside shiner Gila

  • G. atraria

Utah chub Lepidomeda

  • L. copei
  • N. leatherside chub
  • C. ardens

Utah sucker

  • C. platyrhynchus Mountain sucker
  • C. bairdii

Mottled sculpin

  • C. beldingii

Paiute sculpin Resident fish species that occur in the Upper Blackfoot River watershed. Salmonidae Oncorhynchus Cyprinidae Rhinichthys Catostomidae Catostomus Cottidae Cottus

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   

  • IV. Protectiveness of Tissue-Based SSC
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Family Genus Species Common Name SSC Protective

  • f Resident?

Salmo

  • S. trutta

Brown trout

  • O. mykiss

Rainbow trout

  • O. clarkii utah

Bonneville cutthroat trout Salvelinus

  • S. fontinalis

Brook trout Salmonidae Oncorhynchus Resident fish species that occur in the Georgetown Creek watershed.

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  

  • IV. Protectiveness of Tissue-Based SSC
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  • V. Water-Column Calculations

a.

Performance-based approach using methods from USEPA (2016) Appendix K b. Ephemeral / intermittent fishless streams

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  • V. Water-Column Calculations

Default SSC3,4 3.1 (30 day)

  • Notes:
  • 2. Site-specific water column values (30-day) are based on dissolved total selenium in water

and are derived from fish tissue values via mechanistic or bioaccumulation modeling methods in Appendix K from EPA (2016).

  • 3. In streams where fish are naturally absent due to low flow conditions, surface water from

the fishless stream and fish tissue measured downstream at the first occurrence of a continuous fish population are used for bioaccumulation modeling.

  • 4. Fish tissue supersedes any site-specific water colmun values when fish are sampled

downstream of the fishless stream at the first occurrence of a continuous fish population .

Water Column (µg/L)1,2 Water Lotic

  • 1. Frequency: Not to be exceeded more than once in three years on average.
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  • V. Water-Column Calculations

Default SSC3,4 3.1 (30 day)

  • Notes:
  • 2. Site-specific water column values (30-day) are based on dissolved total selenium in water

and are derived from fish tissue values via mechanistic or bioaccumulation modeling methods in Appendix K from EPA (2016).

  • 3. In streams where fish are naturally absent due to low flow conditions, surface water from

the fishless stream and fish tissue measured downstream at the first occurrence of a continuous fish population are used for bioaccumulation modeling.

  • 4. Fish tissue supersedes any site-specific water colmun values when fish are sampled

downstream of the fishless stream at the first occurrence of a continuous fish population .

Water Column (µg/L)1,2 Water Lotic

  • 1. Frequency: Not to be exceeded more than once in three years on average.
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  • V. Water-Column

Calculations

Cwater = BAF (L/g) Fish-Tissue Se (µg/g) Tissue Criterion (µg/g) Surface-Water Se (µg/L) BAF =

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Average Surface Water (฀g Se/L)

1 2 3 4 5 6 7

Average Trout (mg Se/kg dw)

2 4 6 8 10 12 Cutthroat Trout Brook Trout Rainbow Trout Angus Cr. Coyote Cr. Sheep Cr. Upper Slug Cr. Georgetown Cr. Left Hand Fork Cr. Lower Slug Cr.

  • Surface-water Se is a poor predictor of fish-tissue Se

Trout Tissue Se vs Surface Water Se (2014-2016)

  • V. Water-Column Calculations
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  • V. Water-Column

Calculations

Cwater = BAF (L/g) 11.6(µg/g)

Sheep Cr. S. Fork Sheep Cr. Angus Cr. Slug Cr. Georgetown Cr.

Cwater (฀g Se/L)

5 10 15 20

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  • V. Water-Column Calculations

Georgetown Creek

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0.60 µg/L 3.1 µg/L

  • 6.94 µg/L

0.40 µg/L

6/13/2017

Cwater = BAF (L/g) Fish-Tissue Se (µg/g) 11.6(µg/g) Surface-Water Se (µg/L) BAF =

BGTC-4 BGTC-3 BGTC-2 BGTC-1 BLHF-1

Fish-Tissue Se (mg/kg dw)

5 10 15 20

2015 Brook Trout 2016 Brook Trout 2016 Rainbow Trout

dry

  • V. Water-Column Calculations

3.1 µg/L dry 6.94 µg/L

Average ± SD Whole Body Se (mg/kg dw)

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  • V. Water-Column Calculations

b.

Fishless streams

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U.S. EPA (2016), p. 101:

  • “Waters with insufficient stream habitat and/or flow to support a

population of any fish species on a continuing basis”; or

  • “Waters that once supported populations of one or more fish species but

no longer support fish (i.e., extirpation) due to temporary or permanent changes in water quality (e.g., due to selenium pollution), flow, or instream habitat.”

  • V. Water-Column Calculations

b. Fishless streams

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Slug Cr, Goodheart Cr & Dry Canyon Georgetown Cr

Headwaters Diamond Cr. Headwater Slug Cr. Lefthand Fork

Angus, No Name,

  • S. Fork Sheep Cr

& Sheep Cr

Tissue Chemistry

  • Fish-Tissue Se
  • Macroinvertebrate Se
  • Periphyton Se
  • Detritus Se

Abiotic Chemistry

  • Water-Column Se
  • Sediment Se

Community Data

  • Fish Surveys
  • Macroinvertebrate Surveys

Physical Habitat

  • Discharge (or dry channels)
  • Substrate
  • Width, depth, etc
  • V. Water-Column

Calculations

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No Name Creek

Angus Creek

No Name Creek – Fishless Stream

NNC SW (fishless)

Electrofishing results for No Name Creek. Year Spring Monitoring Summer Monitoring Source 2008

  • No Fish

Tetra Tech (2008) 2011

  • No Fish

GEI (2012) 2013 No Fish No Fish GEI (2016a) 2014 No Fish No Fish GEI (2016b) 2015 No Fish No Fish GEI (2016c) 2016 No Fish No Fish Arcadis (2017) Notes:

  • - Not sampled
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No Name Creek

Angus Creek

BNNC-1 BNNC-3 BNNC-4

BNNC-1: Sept 2016 BNNC-1: May 2016 BNNC-1: April 2015

No Name Creek – Fishless Stream

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Angus Creek

BNNC-1

1 2 3 4 5 6 7 8 9 10 Jan-08 Jan-09 Jan-10 Jan-11 Jan-12 Jan-13 Jan-14 Jan-15 Jan-16 Jan-17

Flow (cfs) ( )

No Name Creek – Fishless Stream

No Name Creek

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Default SSC3,4 3.1 (30 day)

  • Water Column (µg/L)1,2

Water Lotic

  • 3. In streams where fish are naturally absent due to low-flow conditions, surface

water from the fishless stream and fish tissue measured at the first occurrence of a continuous fish population are used for bioaccumulation modeling.

  • 4. Fish tissue supersedes any site-specific water column values when fish are

sampled downstream of the fishless stream or reach of fishless stream, at the first

  • ccurrence of a continuous fish population.

6/13/2017 46

  • V. Water-Column Calculations

Appendix K – Site-Specific Criteria, p. K-13 (USEPA 2016):

  • Sample most sensitive fish in most proximate downstream

waters

  • Measure conditions in fishless streams to evaluate possible

impact to downstream fish

b. Fishless streams

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  • “When fish are absent from a waterbody, consideration of sampling the most sensitive

fish species inhabiting nearby, most proximate downstream waters may be useful in

  • rder to understand Se bioaccumulation in such systems.”
  • “Although the upper reaches of some aquatic systems may not support fish

communities, the invertebrate organisms that reside there may tolerate high concentrations of Se and pose a Se risk to predator fish if transported downstream.”

  • “Users may choose to evaluate upstream waters without fish by measuring the Se

concentration in water, biotic and/or abiotic particulate material, and/or the tissues of invertebrate aquatic organisms that reside there. Because Se associated with particulate material and invertebrate organisms can be transported downstream during intermittent high flows, elevated concentrations of Se in the tissues of downstream fish could indicate upstream sources of Se that require a more detailed evaluation of upstream conditions.”

Appendix K – Site-Specific Criteria, p. K-13 (USEPA 2016)

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Default SSC3,4 3.1 (30 day)

  • Water Column (µg/L)1,2

Water Lotic

  • 3. In streams where fish are naturally absent due to low-flow conditions, surface

water from the fishless stream and fish tissue measured at the first occurrence of a continuous fish population are used for bioaccumulation modeling.

  • 4. Fish tissue supersedes any site-specific water column values when fish are

sampled downstream of the fishless stream or reach of fishless stream, at the first

  • ccurrence of a continuous fish population.

6/13/2017 48

  • V. Water-Column Calculations

b. Fishless streams

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Simplified Implementation Flowchart

6/13/2017 49

Application of Se Criterion Are Fish Present? Recalculation to exclude non- resident fish

Yes

Compare average fish tissue to SSC Develop WQ trigger for fishless stream

No

Does SW Se exceed trigger?

Yes

Sample most proximate, downstream fish

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Cwater = Tissue Criterion Fish BAF

  • V. Water-Column Calculations

b. Fishless streams

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Angus Creek

Cwater = Tissue Criterion Fish BAF BAF = Fish, ppm (Angus) SW, ppb (NNC)

NNC SW inflow Angus Cr Fish

  • V. Water-Column Calculations

b. Fishless streams

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  • Fish-tissue data: Angus Cr trout & sculpin (September 2014-2016)
  • Surface-water data: No Name Cr (April-May 2014-2016)

8.2 ppm = average fish 43 ppb = average SW

Cwater = Tissue Criterion Fish BAF BAF = Fish, ppm (Angus) SW, ppb (NNC)

Angus Cr. No Name Cr.

Whole-Body Fish (mg Se/kg dw)

5 10 15

Surface Water (฀g Se/L)

25 50 75

Fish Se (Angus Cr.) SW Se (No Name Cr.)

2014 - 2016 data

29 ppb = average SW 8.2 ppm = average fish Angus Creek

NNC SW inflow Angus Cr Fish

  • V. Water-Column Calculations

b. Fishless streams

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Angus Creek

  • Fish-tissue data: Angus Cr trout & sculpin (September 2014-2016)
  • Surface-water data: No Name Cr (April-May 2014-2016)

Cwater = Tissue Criterion Fish BAF BAF = Fish, ppm (Angus) SW, ppb (NNC)

NNC SW inflow Angus Cr Fish

Angus Cr. No Name Cr.

Whole-Body Fish (mg Se/kg dw)

5 10 15

Surface Water (฀g Se/L)

25 50 75

Fish Se (Angus Cr.) SW Se (No Name Cr.)

BAF = 8.2 µg/g 29 µg/L = 0.28 L/g

29 ppb = average SW 8.2 ppm = average fish

  • V. Water-Column Calculations

b. Fishless streams

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Angus Creek

  • Fish-tissue data: Angus Cr trout & sculpin (September 2014-2016)
  • Surface-water data: No Name Cr (April-May 2014-2016)

Cwater = Tissue Criterion Fish BAF BAF = Fish, ppm (Angus) SW, ppb (NNC)

NNC SW inflow Angus Cr Fish

Angus Cr. No Name Cr.

Whole-Body Fish (mg Se/kg dw)

5 10 15

Surface Water (฀g Se/L)

25 50 75

Fish Se (Angus Cr.) SW Se (No Name Cr.)

29 ppb = average SW 8.2 ppm = average fish

BAF = 8.2 µg/g 29 µg/L = 0.28 L/g Cwater = 11.6 µg/g 0.28 L/g = 41 µg/L (30-d)

  • V. Water-Column Calculations

b. Fishless streams

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Angus Creek

  • Fish-tissue data: Angus Cr trout & sculpin (September 2014-2016)
  • Surface-water data: No Name Cr (April-May 2014-2016)

Cwater = Tissue Criterion Fish BAF BAF = Fish, ppm (Angus) SW, ppb (NNC)

NNC SW inflow Angus Cr Fish

Angus Cr. No Name Cr.

Whole-Body Fish (mg Se/kg dw)

5 10 15

Surface Water (฀g Se/L)

25 50 75

Fish Se (Angus Cr.) SW Se (No Name Cr.)

29 ppb = average SW 8.2 ppm = average fish

41 µg/L = WQ Trigger for No Name Cr. (30-d) (for fish sampling in Angus Cr.) BAF = 8.2 µg/g 29 µg/L = 0.28 L/g Cwater = 11.6 µg/g 0.28 L/g = 41 µg/L (30-d)

  • V. Water-Column Calculations

b. Fishless streams

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No Name Creek – Example Flowchart

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Application of Se Criterion Are Fish Present? Recalculation to exclude non- resident fish

Yes

Compare average fish tissue to 11.6 mg/kg dw WB Develop WQ trigger for fishless stream

No

Does SW Se exceed trigger (41 µg/L)?

Yes

Sample most proximate, downstream fish

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Dry Canyon Creek: May 2016

Other Fishless Streams in Upper Blackfoot River Watershed

Other Fishless Streams1 in Upper Blackfoot River Watershed Fishless Stream Surface-Water Trigger Receiving Water

Goodheart Cr.

  • Slug Cr.

Dry Canyon Cr.

  • Slug Cr.

Dry Basin Cr.

  • Slug Cr.

Notes:

  • - Will be determined with additional data.

1 Fishless Streams = waters with insufficient habitat and/or flow to support a fish population

  • n a continuing basis, determined from:

 Electrofishing, habitat, discharge, and survey records.

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Discussion

6/13/2017 58