Cambridge Consulting has been retained to fine the leaders of Evergreen Ambulance Service. Company Description. Evergreen Ambulance Service is a new not-for-profit Basic Life Support (BLS) Interfacility Ambulance agency in the Portland Oregon area (Clackamas, Multnomah, and Washington Counties). Role Description. This is a full-time role for an Operations Manager, located on-site in Portland, OR. The Operations Manager will be responsible for ove...