March 15, 2001

Protect Pesticides From Potential Flooding

Snow loads in the Red River Valley and Devils Lake Basin are heavy enough to create some concern about potential flooding this spring. Flood preparations should include making sure that stored pesticides are secure and safe from high water, says Andrew Thostenson, pesticide programs coordinator for the North Dakota State University Extension Service.

Improperly stored pesticides pose significant hazards to humans, but they can also do great harm to the environment, including surface water and groundwater, Combined with flood waters, pesticides can create widespread health problems by threatening supplies of drinking water.

"For all of these reasons, take preventive measures to minimize potential exposure to floodwaters," Thostenson says. "Take extra precautions if you live in a floodplain or expect flooding. If flooding of pesticides occurs, be sure you follow safe, legal methods for emergency response, containment and cleanup."

Take extra care with water-permeable containers, he says. Dry formulations packed in paper bags, fiber drums, cardboard boxes or similar containers should be stored on metal shelves. If flooding is imminent, move pesticides, especially those in unsealed or water-permeable containers, to a higher storage locations.

If flooding has occurred, use great caution investigating flooded storage areas, Thostenson warns. Floodwaters may be contaminated with pesticides, so wear appropriate clothing, especially safety boots, to avoid exposure. If unsure of correct procedures for disposal of damaged containers, contact the regional Environmental Protection Agency office, the state regulatory agency or local extension service office for directions and help.

Be aware of any illness arising after handling pesticides. Symptoms of pesticide poisoning frequently include headache, nausea, diarrhea, visual disturbances, excessive salivation or sweating, difficulty in breathing, weakness, tremor or convulsions. Symptoms usually appear within 24 hours but in some cases may be delayed for several days.

If symptoms occur, consult the pesticide label or material safety data sheet for information. See a doctor immediately or contact the North Dakota Poison Center at (800) 732-2200.

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Source: Andrew Thostenson, (701) 231-7180, athosten@ndsuext.nodak.edu
Editor: Gary Moran, (701) 231-7865, gmoran@ndsuext.nodak.edu