Dr. Charles Newell is a Vice-President at GSI Environmental Inc. He has a B.S. degree in Chemical Engineering and M.S. and Ph.D. degrees in Environmental Engineering from Rice University. He is a a Board Certified Environmental Engineer by the American Academy of Environmental Engineers and is an Adjunct Professor in the Department of Civil and Environmental Engineering at Rice University. He has written extensively about MNA in USEPA guidance documents, numerous technical papers, several environmental software tools, and a 1999 text Natural Attenuation of Fuels and Chlorinated Solvents (firstname.lastname@example.org).