Eugene, OR. Eugene Springfield Fire responded to a structure fire at Sponsors 338 Hey 99 N in West Eugene Monday evening. Crews were alerted to the fire at 5:34 PM on May 20th with callers reporting smoke and popping sounds from a storage building. Firefighters arrived 4 minutes later to find a working fire in the storage building. Crews made entry and extinguished the fire containing it to the building of origin. The cause is under investigation.