HOUSTON--(BUSINESS WIRE)--Energy Management & Services Co. (EMS), an industry recognized pipeline engineering services company, announced that the company has changed its name to EnSiteUSA. The name change was instituted to create a more distinctive identity for the company that can be extended across the entire family of companies, including EMS Quality Control, LLC and EMS Land Services, LLC, which will remain as separate entities but be branded collectively as EnSiteUSA. "We are proud of