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HEALTH CONSULTATION

BRANDY BRANCH RESERVOIR
MARSHALL, HARRISON COUNTY, TEXAS

 

Table 1. Selenium in Brandy Branch Reservoir Fish
November 1996
Species # collected Size Selenium Range (ppm) Selenium Average (ppm)
Largemouth Bass 10 14-16.3" 0.46-1.0 0.78
White Crappie 2 11.8-12.2" 1.01-1.1 1.05
All Fish (1996) 0.83
March 1997
Largemouth Bass 3 15.4-17.3" 0.519-0.926 0.69
White Crappie 1 13.7" 1.04 1.04
White Bass 1 15.7" 1.79 1.79
All Fish (1997) 0.98
All Fish (1996-97) 0.87

 

Table 2. Recommended Limitations on Long-Term Fish Consumption by body weight
Body Weight Estimates Based on Average and Upper 95% UCL Selenium Levels for the 17 fish samples collected
(kg) (lb) (a)

Baseline exposure

(µg/day)

(BW x 2.86 ug/kg/day)

(b)

Minimum Risk Level

(µg/day)

(BW x 5 ug/kg/day)

Acceptable Daily Intake

of Selenium From Fish (ug/day)

((b) - (a))

Quantity of fish that can be consumed without exceeding MRL

Meals per week
Average (0.87 ppm) 95% UCL

(0.98 ppm)

Assumes a child body weight and an average meal size of 4 ounces each
10 22 29 50 21 1.6 1.5
20 44 57 100 43 3.3 2.9
30 66 86 150 64 4.9 4.4
Assumes an adult body weight and an average meal size of 8 ounces each
40 88 114 200 86 3.3 2.9
50 110 143 250 107 4.1 3.7
60 132 172 300 128 4.9 4.4
70 154 200 350 150 5.8 5.1
80 176 229 400 171 6.6 5.8
90 198 257 450 193 7.4 6.6
100 22 286 500 214 8.2 7.3

 

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