Weather an obstacle in BP's effort to spray chemical dispersants at main Gulf oil leak site

ON THE GULF OF MEXICO (AP) — The weather conditions are becoming an obstacle as BP sprays chemicals underwater on the massive oil spill in the Gulf of Mexico.

The air quality changes based on the amount and concentration of the oil in the water around the vessels.

Workers on the vessels are having to contend with the sea and prevailing wind conditions. At times, the fumes have become so intense it has caused a burning sensation in the nostrils and nausea. Workers have been wearing respirators while on deck.

BP PLC started pumping dispersant on the site early Monday following approval from the Environmental Protection Agency. The company plans to continue spraying and taking tests for 24 hours.