Selenium - The Risk Assessment Information System

The Eco-SSL values derived to date for selenium are summarized in Table 2.1.
Table 2.1 Selenium Eco-SSLs (mg/kg dry weight in soil)
Plants Soil Invertebrates
Wildlife
Avian Mammalian
0.52 4.1 1.2 0.63
Eco-SSL values were derived for all receptor groups. The Eco-SSL values for selenium range
from 0.52 mg/kg dry weight (dw) for plants to 4.1 mg/kg dw for soil invertebrates. With the
exception of the plant and mammalian values, these values are higher than the 95 th percentile of
reported background soil concentrations of selenium in eastern and western U.S. soils (Figure
2.1). The Eco-SSLs for plants and mammalian wildlife are higher than the median value for
eastern U.S. soils and the 75 th percentile for western U.S. soils.
Eco-SSL for Selenium 4
July 2007