I'm not really sure about reports world-wide. I have not really looked into it. I am under the assumption that whatever is occurring now is largely normal.
It would certainly be interesting to have more data on the subject if it is available.
FIREFIGHTERS practice for toxic spills
Seguin Gazette Enterprise - Seguin,TX,USA
... Firefighters conducted mock chemical operations in the protective suits, such as identifying chemical agents, containing chemical spills and decontamination.
http://web.seguingazette.com/report.lasso?wcd=6957
HOMELAND SECURITY USES NOAA ALL-HAZARDS NETWORK FOR ALERTS AND ...
NOAA - Washington,DC,USA
... broadcast weather forecasts and warnings, including news about severe storms, hurricanes, tornadoes, earthquakes and volcanic activity; chemical spills and bio ...
http://www.noaanews.noaa.gov/stories2004/s2245.htm
BUSH and 9/11 Report: Into the Frame
DEBKA file - Israel
... Under questioning, he spills the tales he has been briefed to reveal ... helped Zarqawi set up laboratories in Biyara for testing chemical, biological and ...
http://www.debka.com/article.php?aid=865