I deeply appreciate the thorough and useful reviews of and contributions to this book by the following individuals:

  • Warren Wood (Michigan State University, East Lansing, Michigan, USA);
  • Kip Solomon (University of Utah, Salt Lake City, Utah, USA);
  • Andrew Herczeg (Adelaide, Australia);
  • Kamini Singha (Colorado School of Mines, Golden, Colorado, USA);
  • Roger Diamond (University of Pretoria, Hatfield, South Africa);
  • Didier Gastmans (Sao Paulo State University, Rio Claro, Brazil); and,
  • David Poulsen (Flinders University, Adelaide, South Australia, Australia).

I appreciate the contributions of Eileen Poeter and John Cherry. I am grateful for Amanda Sills’ oversight of this book and to Elhana Dyck for copyediting, both of the Groundwater Project, Guelph, Ontario, Canada. I thank Eileen Poeter (Colorado School of Mines, Golden, Colorado, USA) for copyediting, layout editing and production of this book.