Test results are summarized in this pdf file... if this works...
CDC Summary
Lead found in children is down
Toxins from second hand smoke is down, but not as much for children or black americans. The latter two groups had twice the levels of second hand smoke toxins as white and hispanic adults.
Chlorpyrifos (a common pesticide) is twice the level in children as opposed to adults.
Unfortunately, no one yet knows the health effects of most of the 116 toxins studied.