The City of Bingen is considering entering into a memorandum of understanding with BNSF Railway to have a mobile foam trailer placed in the town.  Bingen Mayor Betty Barnes says she approached BNSF after the Mosier oil train derailment earlier this month about what could be learned from that incident, and one thing that stood out was the amount of time to get fire suppression foam to the area.  Barnes noted under the memorandum of understanding the foam would be available for emergencies in the Mid-Columbia area on both sides of the Columbia River.  City Councilors will consider the MOU at their meeting Tuesday at 7 p.m. in Bingen City Hall.