degradation products (arsenate and arsenite) cannot be differentiated
from the inorganic arsenic species commonly present in surface
soils. Another important fact is that unlike the case of heavy
industrial pollution, the arsenic input with animal wastes is relatively
small compared to the arsenic already present in the soils.
As a result, several statistical tools are used to help identify the
potential sources of the soil arsenic in the CAFO zone. Even though
the correlations between animal wastes and soil arsenic pollution
in the CAFO zone are rather weak, the results do consistently indicate
that the arsenic in the surface soils in the CAFO has different
input sources, and animal wastes serve as a potential source.