CONCORD, N.H. (AP) — Lawyers for New Hampshire have wrapped up the state’s case against ExxonMobil for the alleged pollution of groundwater from a gasoline additive.

The trial on the lawsuit against ExxonMobil and Citgo began Jan. 14, and is shaping up to be the most complex in state history. Two days after the trial began, Citgo agreed to settle, saying it would pay the state $16 million to detect and clean up groundwater contamination by the additive MTBE.