SEMS is growing! We currently have about 80 employees who are bringing new expertise to our business. The most recent service added is our Vacuum Truck Services managed by Ruben Saldivar. Ruben has over 40 years of knowledge and experience and helps SEMS to provide the best quality work for our clients needs. He also manages other projects including Storage Tank cleaning and removals, Railcar services, Waste broking, and more.