Atrazine is a popular herbicide, tens of millions of pounds of atrazine are applied to vegetation in the U.S. annually a

[answerhappygod]

Atrazine is a popular herbicide, tens of millions of pounds of
atrazine are applied to vegetation in
the U.S. annually and is a widespread drinking water contaminant.
(a) What are the NOAEL and
RfD for atrazine, and to which response do these doses refer? (use
the EPA’s IRIS database). (b)
Consider applying atrazine to your lawn and assume that there are
babies in the household that
like to eat grass. What is the maximum amount of grass that a baby
can eat safely in a day?
Assume the following conditions: baby weight ~10kg, residual
atrazine concentration on grass
from one application is ~0.01% (where 1% = 10,000ppmm). (c) Given
these results from part
(b), does spraying your lawn with atrazine present any serious risk
in this case? Use the “Hazard
Quotient” to make this determination.