1

Appendix H Partitioning Coefficients (Kds)

USGS used spatially and temporally matched datasets from Cutter and Cutter (2004) and 

Doblin et al., (2006) to determine selenium water column concentrations and particulate 

concentrations for points along seaward transects, and data from Lucus and Stewart (2007) to 

determine concentrations for points along landward transects (USGS, 2010). These 

concentrations were used to calculate partitioning coefficients (Kds) for points along four 

seaward and four landward transects (USGS, 2010).

Seaward and Focused Seaward Transects

The salinity, selenium water concentrations, selenium particulate concentrations and Kd

values for points along each of the seaward and focused seaward transects are included in 

Tables 1 through 8. For each set of Kd values (i.e., for each transect), the minimum, maximum, 

mean, 25th percentile, 50th percentile (median) and 75th percentile values have been 

determined, as well as the standard deviation and the 95th percentile confidence level values.

All four seaward transects reflect wet or above average flow conditions. Each of the 

four seaward transects has between 13 and 21 Kd values, and each has one or two outliers (i.e., 

an exceptionally high value). For each seaward and focused seaward transect, the mean, 75th,

50th (median), and 25th percentile values are relatively close in value compared to the total 

range in values, indicating that most of the Kd values along each transect are within a 

reasonable range of each other. Since transect data were not available for dry or critically dry 

flow conditions (usually reflecting higher Kd values), 75th percentile Kd values are used in the 

modeling to reflect a broad range of conditions.

The data in Tables 1 through 4 and Figures 1 through 4 for each seaward transect, and in 

Tables 5 through 8 and Figures 5 through 8 for each focused seaward transect show that the 

range of Kd values narrows in the geographic area in and around Carquinez Strait (the area of 

the focused seaward transects). Most of the very high Kd values (9 of 10 of the Kd values 

greater than 10,000) were found close to the ocean interface where longer residence times can 

result in phytoplankton stripping selenium from the water column, raising Kd values. Since most 

of the clam concentration data collected are from the areas in and around Carquinez Strait and 

Suisun Bay, areas where important species are located and where selenium discharges are 

occurring, bioaccumulation analyses are focused on these critical areas of the estuary.

Figure A is the frequency distribution of all seaward Kd values, and Figure B is the 

frequency distribution of all focused seaward Kd values (i.e., the Kd values for data points in and 

around Carquinez Strait). The range of Kd values noticeably narrows in and around Carquinez 

Strait. 
2

Figure A Frequency Distribution of All Seaward Kd Values

Figure B Frequency Distribution of All Focused Seaward Kd Values

0

2

4

6

8

10

12

14

0

20003000400050006000700080009000

10000110001200013000140001500016000170001800019000200002600027000

Number of Observations

Kd

All Seaward Kd Values

Sea Jun 98

Sea Apr 99

Sea Oct 98

Sea Nov 99

0

1

2

3

4

5

6

0

20003000400050006000700080009000

10000110001200013000140001500016000170001800019000200002600027000

Number of Observations

Kd

All Focused Seaward Kd Values

Jun-98

Apr-99

Oct-98

Nov-99
3

Landward Transects

Selenium water concentrations, selenium particulate concentrations and Kd values for 

points along each of the landward transects are included in Tables 9 through 12. For each set 

of Kd values (i.e., for each transect), the minimum, maximum, mean, 25th percentile, 50th

percentile (median) and 75th percentile values have been determined, as well as the standard 

deviation and 95th percentile confidence level values. 

Two of the four landward transects reflect above normal flow conditions and two reflect 

below normal flow conditions. Data in Tables 8 through 12 and in Figures 8 through 12 for each 

landward transect show that each of the four landward transects has between 11 and 12 

values, and only one (October 2003) appears to have an outlier value (the only landward Kd

value greater than 10,000). For each landward transect, the mean, 75th, 50th (median), and 25th

percentile values are relatively close in value, indicating that most of the Kd values along each 

transect are within a reasonable range of each other. Since data are not available for dry or 

critically dry flow conditions (usually reflecting higher Kd values), 75th percentile Kd values were 

used in the modeling to reflect a broad range of conditions.

Data for three of the four landward transects were collected during high flow periods

(winter months). Freshwater dominated many of transect stations in each of the January 2003, 

April 2003, and January 2004 transects (salinities less than 1 ppt). The Kd values are generally 

more consistent and slightly lower in these transects, than in the seaward transects. The 

October 2003 transect was the only transect that reflected a low flow period, with salinities of 

10 to 12 ppt near Benicia, the most seaward station for the landward transects. During high 

flow periods, dilution of Delta water with particles from the Sacramento River may contribute 

to the lower Kd values1. Additional data from low flow periods during drier years may help to 

better understand the dynamics in low flow periods. If only stations with salinities greater than 

1 ppt are considered, the mean Kd is 3955 and the 75th percentile is 4762; these values are 

similar to and within the range of the focused seaward mean and 75th percentile Kd values. 

Figure C is the frequency distribution of all landward Kd values, and Figure D is the 

frequency distribution of all landward Kd values at stations with salinities greater than 1 ppt. 

 

1

Selenium particulate concentrations from the Sacramento River are lower than selenium particulate 

concentrations from the San Joaquin River, while flow volume from the Sacramento River into the Delta is much 

higher than that from the San Joaquin River.
4

Figure C Frequency Distribution of All Landward Kd Values

Figure D Frequency Distribution of All Landward Kd Values: Salinity > 1 ppt

0

2

4

6

8

10

12

Number of Observations

Kd

All Landward Kd Values

Oct-03

Jan-04

Apr-03

Jan-03

0

1

2

3

4

5

0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 11000 12000

Number of Observatinos

Kd

All Landward Kd Values: 

Salinity > 1 ppt
5

References:

Cutter and Cutter, 2004: Cutter, G.A. and Cutter, L.S. 2004. Selenium biogeochemistry in the 

San Francisco Bay estuary: changes in water column behavior. Estuarine Coastal and Shelf 

Science. 61: 463–476. 

Doblin et al., 2006: Doblin, M.A., S.B. Baines, L.S. Cutter, and G.A. Cutter. 2006. Sources and 

biogeochemical cycling of particulate selenium in the San Francisco Bay estuary. Estuarine, 

Coastal and Shelf Science 67: 681-694.

Lucus and Stewart, 2007: Lucus, L. and A.R. Stewart. 2007. Transport, transformation, and 

effects of selenium and carbon in the Delta of the Sacramento-San Joaquin Rivers: Implications 

for ecosystem restoration. CALFED Ecosystem Restoration Program, Agreement No. 

4600001955, Project No. ERP-01-C07. 515 p.

USGS, 2010: U.S. Geological Survey by Theresa S. Presser and Samuel N. Luoma. 2010. 

Ecosystem-Scale Selenium Modeling in Support of Fish and Wildlife Criteria Development for 

the San Francisco Bay-Delta Estuary, California, Administrative Report. Menlo Park, California.
Table 1 Seaward Transect Kds, November 1999 

Above No rmal/Low WY2000 

salinity ppb ppm Kd 

0 0.070 0.570 8114 

0 0.082 0.747 9095 

0 0.085 0.560 6569 

2.36 0.088 0.572 6524 

4.66 0.099 0.507 5132 

6.32 0.096 0.775 8037 

8.24 0.095 0.541 5708 

9.13 0.095 0.580 6122 

11.43 0.104 0.615 5893 

13.09 0.125 0.869 6959 

15.2 0.125 0.964 7725 

15.58 0.132 0.668 5065 

17.69 0.137 1.028 7480 

21.46 0.122 0.428 3496 

22.16 0.126 0.808 6391 

23.12 0.111 0.544 4882 

26.82 0.111 0.725 6508 

27.14 0.100 0.873 8697 

28.49 0.084 1.657 19785 

29.7 0.082 0.786 9563 

32.19 0.070 0.854 12143 

Mean 0.102 0.746 7614 

Maximum 19785 

75th percentile 0.122 0.854 8114 

SOth/Median 0.099 0.725 6569 

25th 0.085 0.570 5893 

Minimum 3496 

Standard Deviation 3373 

Range 16289 

Sum 159887 

Count 21 

Confid Leve l (95 .0%) 1536 

Figure 1 Seaward Transect Kds, November 1999 

(a) Individual Kd Values 

Seaward Kds, November 1999 

25000 

20000 

15000 

19785 

12143 

10 11 12 13 14 15 16 17 18 19 20 21 

(b) Statistical Measures of Kd Values 

Seaward Kds, November 1999 

25000 

19785 

20000 

15000 

10000 81 14 7614 6569 5893 

5000 3496 

Min1mu •• 25th a SOth/Median 75th percentile • Maximum • Mean 

(c) Frequency of Kd Values 

V> 

§ 6 

~ 5 > Q; 4 

Ii 3 0 

4- 2 0 

~ 1 CJ) 

-E a ::J 

z 

Seaward Kds, November 1999 

• I. • • 

Appendix H Partitioning Coefficients (Kds) Page 6
Table 2 Seaward Transect Kds, October 1998 

Wet/ Low WY1 999 

salinity ppb ppm Kd 

0 0.114 0.622 5468 

0.25 0.114 0.443 3891 

0.83 0.106 0.328 3102 

2.48 0.128 0.289 2257 

2.61 0.132 0.313 2374 

5.41 0.139 0.306 2202 

8.72 0.128 0.667 5212 

11.01 0.151 0.581 3848 

11.65 0.130 0.615 4715 

14.57 0.134 0.727 5444 

15.97 0.151 0.541 3585 

15.97 0.164 0.697 4264 

16.74 0.132 0.927 7026 

20.68 0.096 0.925 9600 

21.57 0.128 0.768 6002 

22.08 0.136 0.600 4419 

23.86 0.100 0.633 6358 

24.88 0.102 1.087 10663 

27.81 0.077 0.971 12677 

29.59 0.082 2.211 26912 

30.1 0.084 

Mean 0.120 0.713 6501 

Maximum 26912 

75th percentile 0.134 0.807 6525 

SOth/Median 0.128 0.627 4963 

25th 0.105 0.516 3782 

Minimum 2202 

Standard Deviation 5554 

Range 24710 

Sum 130016 

Count 20 

Confidence Level (95 .0%) 2599 

Figure 2 Seaward Transect Kds, October 1998 

a Individual Kd Values 

Seaward Kds, October 1998 

30000 

25000 

20000 

15000 

10000 

5000 

269 12 

10 11 12 13 14 15 16 17 18 19 20 

b Statistical Measures of Kd Values 

Seaward Kds, October 1998 

30000 26912 

25000 

20000 

15000 

10000 6525 

3782 4963 

5000 2202 

Minimum • 25th • SOt

-

h/Med 1a n 7 5th percentile • Ma xi mu m 

(c) Frequency of Kd Values 

g "' 6 

~ 5 > 

~ 4 

1l 3 

~ 2 0 

~ 1 QI 

"E o :> 

z 

- ,~, 

1.c 

Seaward Kds, October 1998 

;.t 

! r-w r{i i ~ I~ I I l I I I l I I 

6501 

•

-

M ean 

269 12 

I l 

Appendix H Partitioning Coefficients (Kds) Page 7
Table 3 Seaward Transect Kds, April 1999 

Wet/Hi gh WY1999 

salinity ppb ppm Kd 

0 0.084 0.528 6303 

0 0.091 1.210 13317 

0 0.104 0.598 5732 

0 0.117 1.108 9478 

0 0.125 0.852 6822 

4.89 0.154 0.350 2274 

5.27 0.125 0.319 2555 

7.3 0.076 0.240 3168 

10.1 0.165 0.190 1151 

12.13 0.128 0.441 3442 

13.78 0.139 0.455 3271 

15.69 0.136 0.807 5939 

15.82 0.121 0.577 4772 

16.9 0.128 0.432 3379 

17.4 0.095 0.303 3198 

18.8 0.128 0.450 3515 

24.33 0.114 1.408 12381 

24.84 0.091 0.739 8136 

28.39 0.091 1.075 11829 

Mean 0.116 0.636 5824 

Maximum 13317 

75th percentile 0.128 0.829 7151 

SOth/Median 0.121 0.528 5252 

25th 0.093 0.391 3253 

Minimum 1151 

Standard Deviation 3643 

Range 12166 

Sum 110663 

Count 19 

Confidence Level {95.0%) 1756 

Figure 3 Seaward Tansect Kds, April 1999 

(a) Individual Kd Values 

Seaward Kds, April 1999 

14000 133 17 

12000 

10000 9478 

8000 6303 5939 

6000 I 'I' 11 I "" 4000 3168 'i' I I I , 2274 2555 

2000 I I I 115 1 

I 

10 11 12 

(b) Statistical Measures of Kd Values 

Seaward Kds, April 1999 

14000 

12000 

10000 

8000 7151 

13 14 15 16 

1331 7 

12381 

17 

5252 5824 

6000 

4000 

2000 

0 

§ 6 ·~ 

~ 5 

Q; 4 

}; 3 0 

b 2 

Q; 1 ..Cl 

E o ::J 

z 

.1 

325 3 

1151 

M inimum -• 25th • SOth/M edian 75th pe rcentile • M aximum • Mean 

of Kd Values 

Seaward Kds, April 1999 

I •• 

11829 

8 136 

I 

18 19 

Appendix H Partitioning Coefficients (Kds) Page 8
Table 4 Seaward Transect Kds, June 1998 

Wet/High WY1998 

salinity ppb ppm Kd 

0.01 0.101 0.392 3877 

0.02 0.168 0.392 2330 

0.03 0.183 0.392 2139 

0.04 0.190 0.392 2059 

0.05 0.303 0.687 2271 

0.44 0.215 0.354 1647 

1.08 0.211 0.150 712 

3.61 0.204 0.279 1367 

4.37 0.178 0.443 2491 

8.04 0.185 0.456 2467 

12.47 0.148 0.357 2418 

20.82 0.144 1.589 11054 

24.49 0.126 0.848 6748 

Mean 0.181 0.518 3198 

Maximum 11054 

75th percentile 0.204 0.456 2491 

50th/Median 0.183 0.392 2330 

25th 0.148 0.357 2059 

Minimum 712 

Standard Deviation 2775 

Range 10342 

Sum 41578 

Count 13 

Confid Level (95.0%) 1677 

Figure 4 Seaward Transect Kds, June 1998 

{a) Individual Kd Values 

Seaward Kds, June 1998 

12000 

10000 

SOOD 

6000 

3877 

JOOO 

I 2330 2139 2059 227 1 I 1647 1367 2000 I I I I 712 

• • 

{b) Statistical Measures of Kd Values 

Seaward Kds, June 1998 

12000 

10000 

8000 

6000 

4000 249 1 2059 2330 

2000 712 

- -

2491 2457 2418 

I I I 10 11 

11054 

3198 

• M inimum a 25th • SOth/Median 7Sth percenti le • Maximum a Mea n 

{c) Frequency of Kd Values 

"' c 7 a 

·.;:::; 6 

"' 2'. 5 

~ -" 4 0 

4-

0 

:u 

-" 1 E 

::J 0 z 

Seaward Kds, June.1998 

11054 

6748 

I 12 13 

Appendix H Partitioning Coefficients (Kds) Page 9
Table 5 Focused Seaward Transect Kds, 

November 1999 

Above Normal/Low WY2000 

ppb ppm Kd 

0.104 0.615 5893 

0.125 0.869 6959 

0.125 0.964 7725 

0.132 0.668 5065 

0.137 1.028 7480 

0.122 0.428 3496 

0.126 0.808 6391 

0.111 0.544 4882 

Mean 0.123 0.740 5986 

Maximum 7725 

75th percentile 0.128 0.892 7089 

SOth/Median 0.125 0.738 6142 

25th 0.120 0.597 5019 

Minimum 3496 

Standard Deviation 1446 

Range 4229 

Sum 47891 

Count 8 

Confid Level (95.0%) 1209 

Figure 5 Focused Seaward Transect Kds, November 1999 

(a) Individual Kd Values 

Focused Seaward Kds, November 1999 

10000 7725 7480 6959 5893 I 6391 

I 5065 I I 5000 I I 3496 

0 I 4 5 6 

(b) Statistical Measures of Kd Values 

Focused Seaward Kds, November 1999 

10000 77 25 7089 614 2 5019 

5000 

0 

• Min imum • 25th • Media n 75th • Maxim um • Mea n 

(c) Frequency of Kd Values 

~ 

c 

:8 4 

"' 2'. 

~ 3 .0 

0 

a 

Q) 

.0 

E 1 ::i 

z 0 

Focused Seaward Kds, November 1999 

I I I I I 

4882 

I 

0 1000 2000 3000 4000 5000 6000 7000 8000 

Appendix H Partitioning Coefficients (Kds) Page 10
Table 6 Focused Seaward Transect Kds, 

October 1998 

Wet/Low WY1999 

ppb ppm kd 

0.128 0.289 2257 

0.132 0.313 2374 

0.139 0.306 2202 

0.128 0.667 5212 

0.151 0.581 3848 

0.130 0.615 4715 

Mean 0.135 0.462 3435 

Maximum 5212 

75th percentile 0.137 0.606 4498 

50th/ Median 0.131 0.447 3111 

25th 0.129 0.308 2286 

Minimum 2202 

Standard Deviation 1342 

Range 3010 

Sum 20607 

Count 6 

Confid Level (95 .0%) 1408 

Figure 6 Focused Seaward Transect Kds, October 1998 

(a) Individual Kd Values 

Focused Seaward Kds, October 1998 

6000 52 12 715 

I 3848 I 4000 

I 2257 2374 2202 

2000 

0 I I I 

2 3 4 5 6 

(b) Statistical Measures of Kd Values 

Focused Seaward Kds, October 1998 

6000 5212 

4498 

4000 3111 3435 

2202 2286 

2000 

0 

Min imum • 25th • Med ian 75th • Maximum • Mean 

(c) Frequency of Kd Values 

Focused Seaward Kds, October 1998 

"' c 

0 4 ·;:; 

rtl 

2'. 3 I ~ .c 2 0 

0 

OJ 1 I I I .c 

E 0 ::i 

z 0 1000 2000 3000 4000 5000 6000 7000 8000 

Appendix H Partitioning Coefficients (Kds) Page 11
Table 7 Focused Seaward Transect Kds, 

April 1999 

Wet/High WY1999 

ppb ppm kd 

0.154 0.350 2274 

0.125 0.319 2555 

0.076 0.240 3168 

Mean 0.118 0.303 2666 

Maximum 3168 

75th percentile 0.139 0.335 2861 

SOth/Median 0.125 0.319 2555 

25th 0.100 0.280 2414 

Minimum 2274 

Standard Deviation 457 

Range 894 

Sum 7997 

Count 3 

Confid Level (95.0%) 1135 

Figure 7 Focused Seaward Transect Kds, April 1999 

a Individual Kd Values 

Focused Seaward Kds, April 1999 

4000 3168 

3000 2274 2555 

2000 

1000 

0 

1 2 3 

(b) Statistical Measures of Kd Values 

4000 

3000 

2000 

1000 

0 

Focused Seaward Kds, April 1999 

3168 

2274 2414 2666 

Minimum • 25th • Median 75 th • Maximum • Mean 

(c) Frequency of Kd Values 

Vl 

0 ~ w z ..0 ~ E Q:; 

:::i ~ 

zo 

1 

0 

Focused Seaward Kds, April 1999 

0 1000 2000 3000 4000 5000 6000 7000 8000 

Appendix H Partitioning Coefficients (Kds) Page 12
Table 8 Focused Seaward Transect Kds, 

June 1998 

Wet/High WY1998 

ppb ppm kd 

0.215 0.354 1647 

0.211 0.150 712 

Mean 0.213 0.252 1180 

Maximum 1647 

75th percentile 0.214 0.303 1414 

SOth/Median 0.213 0.252 1180 

25th 0.212 0.201 946 

Minimum 712 

Standard Deviation 661 

Range 935 

Sum 2360 

Count 2 

Confid Level (95.0%) 5942 

Figure 8 Focused Seaward Transect Kds, June 1998 

(a) Individual Kd Values 

Focused Seaward Kds, June 1998 

2000 1647 

1000 712 

0 

1 

-2 

(b) Statisitical Measures of Kd Values 

Focused Seaward Kds, June 1998 

2000 1647 

1414 

1180 1180 

946 

1000 712 

0 

M inimum • 25th • Median 75th • Maxim um • Mean 

(c) Frequency of Kd Values 

V1 

c 

0 4 ~ 

rn 

~ 3 ~ .D 

0 2 ..._ 

0 

~ 1 .D 

~ 0 z 

Focused Seaward Kds, June 1998 

0 1000 2000 3000 4000 5000 6000 7000 8000 

Appendix H Partitioning Coefficients (Kds) Page 13
Table 9 Landward Transect Kds, 

January 2003 

Above Normal/High WY2003 

ppb ppm Kd 

0.16 0.27 1684 

0.186 0.583 3139 

0.111 0.38 3421 

0.166 0.58 3503 

0.167 0.378 2269 

0.128 0.378 2955 

0.138 0.268 1946 

0.136 0.447 3285 

0.349 0.55 1573 

0.552 0.306 554 

0.599 0.373 622 

Mean 0.245 0.410 2268 

Maximum 0.599 0.583 3503 

75th 0.2675 0.4985 3212 

50th 0.166 0.378 2269 

25th 0.137 0.340 1629 

Minimum 0.111 0.268 554 

Median 2269 

Standard Deviation 1081 

Range 2949 

Sum 24951 

Count 11 

Confid Level (95.0%) 726 

Figure 9 Landward Transect Kds, January 2003 

{a) Individual Kd Values 

Landward Kds, January 2003 

4000 3285 

2955 

3000 2269 

1684 1946 

2000 1573 

1000 I lll I I I I I 554 622 

0 

2 3 4 5 6 7 8 

{b) Statistical Measures of Kd Values 

Landward Kds, January 2003 

4000 3503 

3212 

3000 

2269 

2000 1629 

1000 554 

0 

-• M in im um • 25th SOth 75th • Maximum 

{c) Frequency of Kd Values 

~ 5 0 

-~ 4 > 

~ 3 .D 

0 2 

Qj 1 .D 

E 0 ::J 

z 

Landward Kds, January 2003 

I 

• I 

9 10 11 

2268 

• Mean 

Appendix H Partitioning Coefficients (Kds) Page 14
Table 10 Landward Transect Kds, 

April 2003 

Above Normal/High WY2003 

ppb ppm Kd 

0.126 0.33 2644 

0.12 0.45 3775 

0.139 0.38 2773 

0.116 0.28 2363 

0.121 0.53 4351 

0.138 0.53 3859 

0.115 0.34 2935 

0.185 0.62 3354 

0.912 1.31 1432 

0.938 0.87 927 

1.008 1.12 1111 

Mean 0.36 0.61 2684 

Maximum 1.008 1.31 4351 

75th 0.5485 0.745 3565 

SOth 0.138 0.53 2773 

25th 0.1205 0.36 1898 

Minimum 0.115 0.28 927 

Median 2773 

Standard Deviation 1145 

Range 3424 

Sum 29524 

Count 11 

Confid Level (95.0%) 769 

Figure 10 Landward Tansect Kds, April 2003 

{a) Individual Kd Values 

Landward Kds, April 2003 

5000 4351 

3775 

I 

3859 

4000 

I 

3354 

2644 I 2773 2935 

I 3000 2363 I 2000 I I I 1000 

0 

2 3 4 6 7 8 

{b) Statistical Measures of Kd Values 

5000 

4000 

3000 

2000 

1000 

0 

927 

-

Landward Kds, April 2003 

4351 

3565 

2773 

1898 

1432 

927 I I 

9 10 

2684 

• Minimum • 25th 50th 75th • Maximum • Mean 

{c) Frequency of Kd Values 

~ s ·.;:; 

~ 4 

~ -" 3 0 

a 2 

~ 1 

E 

~ 0 

Landward Kds, April 2003 

1111 

I 

11 

Appendix H Partitioning Coefficients (Kds) Page 15
Table 11 Landward Transect Kds, 

October 2003 

Below Normal/Low WY2004 

ppb ppm Kd 

0.114 0.487 4262 

0.1 0.368 3700 

0.125 0.578 4634 

0.095 0.459 4805 

0.068 0.396 5808 

0.083 0.706 8483 

0.11 1 0.413 3716 

0.091 0 .807 8826 

0.119 1.115 9362 

0.121 1.525 12650 

0.527 0.858 1628 

0.532 1.267 2384 

Mea n 0.174 0.748 5855 

Maximum 0.532 1.525 12650 

75th 0.122 0.922 8569 

SOt h 0.113 0.642 4720 

25th 0.094 0.448 3712 

Minimum 0.068 0.368 1628 

Med ian 4720 

Sta ndard Deviation 3282 

Range 11022 

Sum 70258 

Count 12 

Confid Leve l {95 .0%) 2085 

Figure 11 Landward Transect Kds, October 2003 

(a) Individual Kd Values 

Landward Kds, October 2003 

15000 12650 

10000 8483 8826 9362 I 5808 I I I 5000 

'i' 'i' 'i 'is I 3716 

I 1628 

0 • 

2 3 4 5 6 7 8 9 10 11 

(b) Statistical Measures of Kd Values 

Landward Kds, October 2003 

15000 12650 

10000 8569 

5855 

4720 

5000 3712 

1628 • 0 

-• M inimum • 25th SOth 75th • Maximum • Mean 

(c) Frequency of Kd Values 

"' 3.5 

g 3 

.1ii 2.5 > 

Q; 2 

~ 1.5 0 

- 1 0 

Q; 0.5 

'E o 

z "' 

Landward Kds, October 2003 

2384 

I 

12 

Appendix H Partitioning Coefficients (Kds) Page 16
Table 12 Landward Tansect Kds, 

January 2004 

Below Normal/High WY2004 

ppb ppm Kd 

0.161 0.489 3032 

0.172 0.257 1493 

0.128 0.573 4480 

0.144 0.234 1626 

0.148 0.391 2642 

0.114 0.727 6398 

0.133 0.418 3136 

0.119 0.589 4956 

0.221 0.413 1870 

0.5 0.627 1256 

0.523 0.993 1898 

Mean 0.215 0.519 2981 

Maximum 0.523 0.993 6398 

75th 0.1965 0.608 3808 

SOth 0.148 0.489 2642 

25th 0.1305 0.402 1748 

Minimum 0.114 0.234 1256 

Median 2642 

Standard Deviation 1655 

Range 5142 

Sum 32787 

Count 11 

Confid Level (95.0%) 1112 

Figure 12 Landward Transect Kds, January 2004 

(a) Individual Kd Values 

Landward Kds, January 2004 

7000 6398 

6000 4956 

5000 4480 

4000 3032 I 3136 I 3000 2642 

I I 1870 

2000 1493 1626 I 1256 

1000 

0 I I I I 

2 4 6 7 8 9 10 

(b) Statistical Measures of Kd Values 

Landward Kds, January 2004 

8000 

6398 

6000 

3808 

4000 2981 2642 

2000 1256 

1748 

0 

-• Min im um -• 25th SOth 75th • Max imum • Mean 

(c) Frequency of Kd Values 

~ 6 

.g 5 

"' c: 4 

ii( 

..Cl 3 0 

a z ~ 1 ..Cl 

E O ::J 

z 

Landward Kds, January 2004 

1898 

I 

11 

Appendix H Partitioning Coefficients (Kds) Page 17