Richard Rachiele joined RMA in 1985 and has nearly 40 years’ experience in applying numerical modeling techniques to water quality, hydrodynamics, and sediment transport in rivers, reservoirs, and estuaries. As senior modeler, Richard has been responsible for configuring, calibrating, and applying the RMA San Francisco Bay-Delta Model. In addition, Richard has been responsible for a variety of projects related to numerical model development and application, as well as software and user interface development and GIS integration. He has also been a member of the RMA team that participates in developing and supporting the USACE Corps Water Management System and HEC’s next generation of software. Richard holds a bachelor’s degree in geophysics and geology from the University of California, Riverside, and a master’s degree in civil engineering from the University of California, Berkeley.