On May 22, Exxon Baton Rouge, LA, reported a small leak developed under insulation in the Sulfur Recovery Unit, releasing hydrogen sulfide and sulfur dioxide. Exxon will need to divert H2S stream to incinerator during repairs (2-4 days), which will result in large release of SO2 each day (approximately 24 tons/day). Work will be completed under an agreed LDEQ compliance order. EPA START and LDEQ, along with Exxon, will conduct off-site monitoring while repairs/release is ongoing. EPA START, LDEQ, and Exxon will coordinate monitoring results.