Tim Bechtel, Ph.D.,P.G. grew up on the Rockdale Run Formation, with a sinkhole in the backyard of his boyhood home. He has a B.Sc. from Haverford College (where he majored in geology at Bryn Mawr College), and an M.Sc. in Rock Mechanics and a Ph.D. in Geophysics (focusing on gravity) from Brown University.

Tony Sauder, is a registered professional engineer and geologist with over twenty years experience in water resources, hydrogeology, and environmental engineering.His hydrology experience has ranged from evaluating water harvesting in semi-arid regions of Africa to determining protective discharge limits based on low flows in Pennsylvania streams.

Carl Mastropaolo has a bachelor of science degree in mathematics from St. Joseph's University and a masters degree in environmental science from Drexel University.He has been employed in the environmental consulting field for 16 years, the last 12 as a self-employed environmental scientist.

Education: Doctor of Philosophy, 1987. Dept. of Geography and Environmental Engineering, Johns Hopkins University, Baltimore Maryland. Dissertation: "Sediment Budgets and Delivery in Suburban Watersheds". Master of Arts, 1982. Dept. of Earth & Environmental Science, Wesleyan University, Middletown Connecticut. Thesis: "Patterns of Bedload Transport in the Connecticut River Estuary".

 Doug Jerolmack, Ph.D. focuses his research on the spatial and temporal evolution of patterns that emerge at the interface of fluid and sediment on Earth and planetary surfaces.  Scales of interest range from ripples and dunes evolving over minutes in sandy rivers, to the preserved record of millions of years of coastal evolution on the continental shelf. 

 Maria holds a bachelor of arts in chemistry from Rutgers University and a master of science in engineering geology from Drexel University.  Maria's professional experience in the environmental field ranges from applications of analytical soil and water chemistry to multiple facets of environmental consulting.