John A. Cherry

TL;DR: In this paper, the authors explore reasons for the observed difficulty of groundswater cleanup and note some implications that become clear during this process, focusing mainly on organic contaminants, the most health-threatening chemicals detected in groundwater and because the greatest difficulties in groundwater remediation have been encountered at organic contamination sites.

TL;DR: A large-scale field experiment on natural gradient transport of solutes in groundwater has been conducted at a site in Borden, Ontario as discussed by the authors, where over 19,900 samples have been collected over a 3-year period.

TL;DR: In this paper, stable isotopes, 15N and 18O, have been used as tracers to differentiate a contaminant nitrate plume emanating from a single domestic septic system, in a ground-water system characterized by high and similar nitrate content outside and inside of the contaminant plume.

TL;DR: A natural-gradient tracer test using a chloride solution with an initial injection volume of 0.7 m 3 was performed in the sandy aquifer at the Borden site as mentioned in this paper.

TL;DR: In this article, basic principles of physical hydrogeology and the nature of the hydrologic interactions between groundwater and surface water can be convincingly demonstrated in the field using two inexpensive and inexpensive tools.