Appendix G Comparative Modeling Results Page 1

Clam Food Web/Fish – All Transects – 75th Percentile Kd

Data Source Water Year/

Flow Season

MonthYearTransect Min Kd 25th

percentile

Kd

Mean

Kd

Median

Kd

75th

percentile

Kd

Max Kd Allowable

Dissolved

Se Conc

(ug/L)

Predicted

Allowable

Particulate Se

Conc (ug/g dw)

Predicted

Allowable Inv

Se Conc

(ug/g dw)

Predicted

Tissue Se

Conc 

(ug/g dw) Name Value Units

Mean 75th Kd Focused Seaward 3966 0.256 1.017 7.7 8.5 Fish (Clam) Target 8.5 ug/g

Prey TTF 7.6 dimensionless

C&C/Doblin wet/high Jun-98 Seaward 712 2059 3198 2330 2491 11054 0.408 1.017 7.7 8.5 Fish TTF 1.1 dimensionless

C&C/Doblin wet/high Jun-98 Focused Seaward 712 946 1180 1180 1414 1647 0.719 1.017 7.7 8.5

C&C/Doblin wet/low Oct-98 Seaward 2202 3782 6501 4963 6525 26912 0.156 1.017 7.7 8.5

C&C/Doblin wet/low Oct-98 Focused Seaward 2202 2286 3435 3111 4498 5212 0.226 1.017 7.7 8.5

C&C/Doblin wet/high Apr-99 Seaward 1151 3253 5824 5252 7151 13317 0.142 1.017 7.7 8.5

C&C/Doblin wet/high Apr-99 Focused Seaward 2274 2414 2666 2555 2861 3168 0.355 1.017 7.7 8.5

C&C/Doblin normal/low Nov-99 Seaward 3496 5893 7614 6569 8114 19785 0.125 1.017 7.7 8.5

C&C/Doblin normal/low Nov-99 Focused Seaward 3496 5019 5986 6142 7089 7725 0.143 1.017 7.7 8.5

L&S above normal/high Jan-03 Landward 554 1628 2268 2269 3212 3503 0.317 1.017 7.7 8.5

L&S above normal/high Apr-03 Landward 927 1898 2684 2773 3564 4351 0.285 1.017 7.7 8.5

L&S belownormal/low Oct-03 Landward 1628 3712 5855 4720 8569 12650 0.119 1.017 7.7 8.5

L&S belownormal/high Jan-04 Landward 1256 1748 2981 2642 3808 6398 0.267 1.017 7.7 8.5

Tetra Tech Dry Weather Sep-10 Focused Seaward 211 2663 3783 3501 4387 7482 0.232 1.017 7.7 8.5

Tetra Tech Dry Weather Sep-10 Landward 235 4117 5981 5529 7580 12442 0.134 1.017 7.7 8.5

Tetra Tech Dry Weather Sep-10 Seaward 211 2704 3415 3134 3789 7482 0.268 1.017 7.7 8.5

Tetra Tech Wet Weather Mar-11 Focused Seaward 2674 2711 4595 3560 6471 7558 0.157 1.017 7.7 8.5

Tetra Tech Wet Weather Mar-11 Seaward 824 2683 3411 3073 3541 7558 0.287 1.017 7.7 8.5

Tetra Tech Wet Weather Mar-11 Landward 2711 4544 9003 9600 13975 14186 0.073 1.017 7.7 8.5

Tetra Tech Dry Weather Jul-11 Landward 3966 4114 4263 4263 4411 4559 0.230 1.017 7.7 8.5

Tetra Tech Dry Weather Oct-11 Seaward 3758 4849 6806 6227 8651 12793 0.118 1.017 7.7 8.5

Tetra Tech Dry Weather Oct-11 Focused Seaward 3758 4197 5594 5583 6290 8844 0.162 1.017 7.7 8.5

Tetra Tech Dry Weather Oct-11 Landward 3978 7548 10809 10492 11838 22420 0.086 1.017 7.7 8.5

Tetra Tech Wet Weather Apr-12 Focused Seaward 2272 3005 3381 3456 3592 4744 0.283 1.017 7.7 8.5

Tetra Tech Wet Weather Apr-12 Landward 2043 4473 5088 5806 6421 6697 0.158 1.017 7.7 8.5

Tetra Tech Wet Weather Apr-12 Seaward 2272 2818 3536 3399 3953 5519 0.257 1.017 7.7 8.5
 Appendix G Comparative Modeling Results Page 2

Clam Food Web/Rail – All Transects – 75th Percentile Kd

Data Source Water Year/

Flow Season

MonthYearTransect Min Kd 25th

percentile

Kd

Mean

Kd

Median

Kd

75th

percentile

Kd

Max Kd Allowable

Dissolved Se

Conc (ug/L)

Predicted

Allowable

Particulate Se

Conc (ug/g dw)

Predicted

Allowable Inv

Se Conc

(ug/g dw)

Predicted

Tissue Se

Conc 

(ug/g dw) Name Value Units

Mean 75th Kd Focused Seaward 3966 0.730 2.894 15.6 12.5 Ridgeway’s Rail Target 12.5 ug/g

Prey TTF 5.4 dimensionless

C&C/Doblin wet/high Jun-98 Seaward 712 2059 3198 2330 2491 11054 1.162 2.894 15.6 12.5 Egg TTF 0.8 dimensionless

C&C/Doblin wet/high Jun-98 Focused Seaward 712 946 1180 1180 1414 1647 2.046 2.894 15.6 12.5

C&C/Doblin wet/low Oct-98 Seaward 2202 3782 6501 4963 6525 26912 0.443 2.894 15.6 12.5

C&C/Doblin wet/low Oct-98 Focused Seaward 2202 2286 3435 3111 4498 5212 0.643 2.894 15.6 12.5

C&C/Doblin wet/high Apr-99 Seaward 1151 3253 5824 5252 7151 13317 0.405 2.894 15.6 12.5

C&C/Doblin wet/high Apr-99 Focused Seaward 2274 2414 2666 2555 2861 3168 1.011 2.894 15.6 12.5

C&C/Doblin normal/low Nov-99 Seaward 3496 5893 7614 6569 8114 19785 0.357 2.894 15.6 12.5

C&C/Doblin normal/low Nov-99 Focused Seaward 3496 5019 5986 6142 7089 7725 0.408 2.894 15.6 12.5

L&S above normal/high Jan-03 Landward 554 1628 2268 2269 3212 3503 0.901 2.894 15.6 12.5

L&S above normal/high Apr-03 Landward 927 1898 2684 2773 3564 4351 0.812 2.894 15.6 12.5

L&S below normal/low Oct-03 Landward 1628 3712 5855 4720 8569 12650 0.338 2.894 15.6 12.5

L&S below normal/high Jan-04 Landward 1256 1748 2981 2642 3808 6398 0.760 2.894 15.6 12.5

Tetra Tech Dry Weather Sep-10 Focused Seaward 211 2663 3783 3501 4387 7482 0.660 2.894 15.6 12.5

Tetra Tech Dry Weather Sep-10 Landward 235 4117 5981 5529 7580 12442 0.382 2.894 15.6 12.5

Tetra Tech Dry Weather Sep-10 Seaward 211 2704 3415 3134 3789 7482 0.764 2.894 15.6 12.5

Tetra Tech Wet Weather Mar-11 Focused Seaward 2674 2711 4595 3560 6471 7558 0.447 2.894 15.6 12.5

Tetra Tech Wet Weather Mar-11 Seaward 824 2683 3411 3073 3541 7558 0.817 2.894 15.6 12.5

Tetra Tech Wet Weather Mar-11 Landward 2711 4544 9003 9600 13975 14186 0.207 2.894 15.6 12.5

Tetra Tech Dry Weather Jul-11 Landward 3966 4114 4263 4263 4411 4559 0.656 2.894 15.6 12.5

Tetra Tech Dry Weather Oct-11 Seaward 3758 4849 6806 6227 8651 12793 0.334 2.894 15.6 12.5

Tetra Tech Dry Weather Oct-11 Focused Seaward 3758 4197 5594 5583 6290 8844 0.460 2.894 15.6 12.5

Tetra Tech Dry Weather Oct-11 Landward 3978 7548 10809 10492 11838 22420 0.244 2.894 15.6 12.5

Tetra Tech Wet Weather Apr-12 Focused Seaward 2272 3005 3381 3456 3592 4744 0.806 2.894 15.6 12.5

Tetra Tech Wet Weather Apr-12 Landward 2043 4473 5088 5806 6421 6697 0.451 2.894 15.6 12.5

Tetra Tech Wet Weather Apr-12 Seaward 2272 2818 3536 3399 3953 5519 0.732 2.894 15.6 12.5
Appendix G Comparative Modeling Results Page 3

Clam Food Web/Duck – All Transects – 75th Percentile Kd

Data Source Water Year/

FlowSeason

MonthYearTransect Min K d 25th

percentile

K d

Mean

K d

Median

K d

75th

percentile

K d

Max K d Allowable

Dissolved Se

Conc (ug/L)

Predicted

Allowable

Particulate Se

Conc (ug/g dw)

Predicted

Allowable Inv

Se Conc

(ug/g dw)

Predicted

Tissue S e

Conc 

(ug/g dw) Name Value Units

Mean 75th Kd FocusedSeaward 3966 0.224 0.890 6.9 12.5 Duck Target 12.5 ug /g

Prey TTF 7.8 dimensionless

C&C/Doblin wet/high Jun-98 Seaward 712 2059 3198 2330 2491 11054 0.357 0.890 6.9 12.5 Egg TTF 1.8 dimensionless

C&C/Doblin wet/high Jun-98 FocusedSeaward 712 946 1180 1180 1414 1647 0.630 0.890 6.9 12.5

C&C/Doblin wet/low Oct-98 Seaward 2202 3782 6501 4963 6525 26912 0.136 0.890 6.9 12.5

C&C/Doblin wet/low Oct-98 FocusedSeaward 2202 2286 3435 3111 4498 5212 0.198 0.890 6.9 12.5

C&C/Doblin wet/high Apr-99 Seaward 1151 3253 5824 5252 7151 13317 0.125 0.890 6.9 12.5

C&C/Doblin wet/high Apr-99 FocusedSeaward 2274 2414 2666 2555 2861 3168 0.311 0.890 6.9 12.5

C&C/Doblin normal/low Nov-99 Seaward 3496 5893 7614 6569 8114 19785 0.110 0.890 6.9 12.5

C&C/Doblin normal/low Nov-99 FocusedSeaward 3496 5019 5986 6142 7089 7725 0.126 0.890 6.9 12.5

L&S abovenormal/high Jan-03 Landward 554 1628 2268 2269 3212 3503 0.277 0.890 6.9 12.5

L&S abovenormal/high Apr-03 Landward 927 1898 2684 2773 3564 4351 0.250 0.890 6.9 12.5

L&S belownormal/low Oct-03 Landward 1628 3712 5855 4720 8569 12650 0.104 0.890 6.9 12.5

L&S belownormal/high Jan-04 Landward 1256 1748 2981 2642 3808 6398 0.234 0.890 6.9 12.5

Tetra Tech Dry Weather Sep-10 FocusedSeaward 211 2663 3783 3501 4387 7482 0.203 0.890 6.9 12.5

Tetra Tech Dry Weather Sep-10 Landward 235 4117 5981 5529 7580 12442 0.117 0.890 6.9 12.5

Tetra Tech Dry Weather Sep-10 Seaward 211 2704 3415 3134 3789 7482 0.235 0.890 6.9 12.5

Tetra Tech WetWeather Mar-11 FocusedSeaward 2674 2711 4595 3560 6471 7558 0.138 0.890 6.9 12.5

Tetra Tech WetWeather Mar-11 Seaward 824 2683 3411 3073 3541 7558 0.251 0.890 6.9 12.5

Tetra Tech WetWeather Mar-11 Landward 2711 4544 9003 9600 13975 14186 0.064 0.890 6.9 12.5

Tetra Tech Dry Weather Jul-11 Landward 3966 4114 4263 4263 4411 4559 0.202 0.890 6.9 12.5

Tetra Tech Dry Weather Oct-11 Seaward 3758 4849 6806 6227 8651 12793 0.103 0.890 6.9 12.5

Tetra Tech Dry Weather Oct-11 FocusedSeaward 3758 4197 5594 5583 6290 8844 0.142 0.890 6.9 12.5

Tetra Tech Dry Weather Oct-11 Landward 3978 7548 10809 10492 11838 22420 0.075 0.890 6.9 12.5

Tetra Tech WetWeather Apr-12 FocusedSeaward 2272 3005 3381 3456 3592 4744 0.248 0.890 6.9 12.5

Tetra Tech WetWeather Apr-12 Landward 2043 4473 5088 5806 6421 6697 0.139 0.890 6.9 12.5

Tetra Tech WetWeather Apr-12 Seaward 2272 2818 3536 3399 3953 5519 0.225 0.890 6.9 12.5
Appendix G Comparative Modeling Results Page 4

Insect Food Web/Fish – All Transects – 75th Percentile Kd

Data Source Water Year/

Flow Season

MonthYearTransect Min Kd 25th

percentile

Kd

Mean

Kd

Median

Kd

75th

percentile

Kd

Max Kd Allowable

Dissolved

Se Conc

(ug/L)

Predicted

Allowable

Particulate Se

Conc (ug/g dw)

Predicted

Allowable Inv

Se Conc

(ug/g dw)

Predicted

Tissue Se

Conc 

(ug/g dw) Name Value Un its

Mean 75th Kd Landward 4788 0.576 2.760 7.7 8.5 Fish (Insect) Target 8.5 ug/g

Prey TTF 2.8 dimensionless

C&C/Doblin wet/high Jun-98 Seaward 712 2059 3198 2330 2491 11054 1.108 2.760 7.7 8.5 Fish TTF 1.1 dimensionless

C&C/Doblin wet/high Jun-98 Focused Seaward 712 946 1180 1180 1414 1647 1.952 2.760 7.7 8.5

C&C/Doblin wet/low Oct-98 Seaward 2202 3782 6501 4963 6525 26912 0.423 2.760 7.7 8.5

C&C Doblin wet/low Oct-98 Focused Seaward 2202 2286 3435 3111 4498 5212 0.614 2.760 7.7 8.5

C&C/Doblin wet/high Apr-99 Seaward 1151 3253 5824 5252 7151 13317 0.386 2.760 7.7 8.5

C&C/Doblin wet/high Apr-99 Focused Seaward 2274 2414 2666 2555 2861 3168 0.965 2.760 7.7 8.5

C&C/Doblin normal/low Nov-99 Seaward 3496 5893 7614 6569 8114 19785 0.340 2.760 7.7 8.5

C&C/Doblin normal/low Nov-99 Focused Seaward 3496 5019 5986 6142 7089 7725 0.389 2.760 7.7 8.5

L&S above normal/high Jan-03 Landward 554 1628 2268 2269 3212 3503 0.859 2.760 7.7 8.5

L&S above normal/high Apr-03 Landward 927 1898 2684 2773 3564 4351 0.774 2.760 7.7 8.5

L&S belownormal/low Oct-03 Landward 1628 3712 5855 4720 8569 12650 0.322 2.760 7.7 8.5

L&S belownormal/high Jan-04 Landward 1256 1748 2981 2642 3808 6398 0.725 2.760 7.7 8.5

Tetra Tech Dry Weather Sep-10 Focused Seaward 211 2663 3783 3501 4387 7482 0.629 2.760 7.7 8.5

Tetra Tech Dry Weather Sep-10 Landward 235 4117 5981 5529 7580 12442 0.364 2.760 7.7 8.5

Tetra Tech Dry Weather Sep-10 Seaward 211 2704 3415 3134 3789 7482 0.728 2.760 7.7 8.5

Tetra Tech Wet Weather Mar-11 Focused Seaward 2674 2711 4595 3560 6471 7558 0.426 2.760 7.7 8.5

Tetra Tech Wet Weather Mar-11 Seaward 824 2683 3411 3073 3541 7558 0.779 2.760 7.7 8.5

Tetra Tech Wet Weather Mar-11 Landward 2711 4544 9003 9600 13975 14186 0.197 2.760 7.7 8.5

Tetra Tech Dry Weather Jul-11 Landward 3966 4114 4263 4263 4411 4559 0.626 2.760 7.7 8.5

Tetra Tech Dry Weather Oct-11 Seaward 3758 4849 6806 6227 8651 12793 0.319 2.760 7.7 8.5

Tetra Tech Dry Weather Oct-11 Focused Seaward 3758 4197 5594 5583 6290 8844 0.439 2.760 7.7 8.5

Tetra Tech Dry Weather Oct-11 Landward 3978 7548 10809 10492 11838 22420 0.233 2.760 7.7 8.5

Tetra Tech Wet Weather Apr-12 Focused Seaward 2272 3005 3381 3456 3592 4744 0.768 2.760 7.7 8.5

Tetra Tech Wet Weather Apr-12 Landward 2043 4473 5088 5806 6421 6697 0.430 2.760 7.7 8.5

Tetra Tech Wet Weather Apr-12 Seaward 2272 2818 3536 3399 3953 5519 0.698 2.760 7.7 8.5
 Appendix G Comparative Modeling Results Page 5

 

 Appendix G Comparative Modeling Results Page 5

USGS KDs versus Tetra Tech KDs - Landward

15000

13975

13000

11838

11000

10809

10492

9600

9003

9000 8569

7580 7548

7000

5855 5981

5529

5000 4720 4544 4411

6421

5806

5088

4473

4117 4114

4

2643263

3564 3712 3808

3000 26824773 2642

22628269

1628

1898 1748

1000

-1000

Landward

Jan-03

Landward

Apr-03

Landward

Oct-03

Landward

Jan-04

Landward

Sep-10

Landward

Mar-11

Landward

Jul-11

Landward

Oct-11

Landward

Apr-12

25th percentile Kd Mean Kd Median Kd 75th percentile Kd

10000

USGS KDs versus Tetra Tech KDs- Focused Seaward

9000

8000

7000

6000

7089

6142

5986

6471

6290

55954583

4000

4498

5019

3783

4387

4595

4197

3592

3000

3435

3111

2861

266

2

6

555

3501 3560

2663 2711

338

31456

3005

2000

1414

11810180

946

2286 2414

0

Focused Seaward Focused Seaward Focused Seaward Focused Seaward Focused Seaward Focused Seaward Focused Seaward Focused Seaward

Jun-98 Oct-98 Apr-99 Nov-99 Sep-10 Mar-11 Oct-11 Apr-12

25th percentile Kd Mean Kd Median Kd 75th percentile Kd