While most agreed to fork over about $4 million each, Lyondell Chemical is set to pay just $700,000. According to its settlement agreement, Lyondell never operated any gasoline stations or storage facilities near the district's wells and merely sold MTBE to refiners and oil companies. "There is no evidence to suggest that MTBE manufactured by Lyondell has ever reached or threatened to reach any of [the district's] drinking water wells or groundwater," their settlement states. Bunn, the water district's attorney, said he could not expand on the latest developments due to agreements with the oil and chemical companies. It could take a few months before the remaining three settlements are signed by a judge. -- Follow Brittany Levine on Google+ and on Twitter: @brittanylevine.