H. E. LeGrand
1965
<p><span>Ramifications of </span>contamination<span> are increasingly involved in the majority of </span>ground‐water<span> problems. The volume of usable </span>ground<span> </span>water<span> is shrinking in many places because of dispersion of contaminated </span>water<span>. Consideration of </span>ground‐water<span> </span>contamination<span> as a multitude of independent problems, separately solvable as each problem arises, is outmoded; wise policies, relating </span>water<span> supply to </span>contamination<span> potential, are needed to alleviate and to forestall problems. Methodology of managing </span>contamination<span> problems calls for appropriate classification of the hydrogeologic environment; these classifications include aspects of interdependent factors such as permeability, sorption, hydraulic gradient, position of </span>water<span> table relative to some base, and distance from source of </span>contamination<span>. Effective evaluations relate the dynamics of the hydrogeologic environment to contingencies involving </span>contamination<span>, as man changes his </span>water<span>‐development and waste‐disposal practices. Ways of </span>contamination<span> and pertinent parts of the physical environment include: waste‐disposal practices (at or near land surface and in deep formations), artificial recharge (at land surface and in aquifers), accidents, and salt‐</span>water<span> </span>contamination<span> of aquifers (shallow depth from salty surface </span>water<span> and at variable depths from subjacent salty aquifers). Evaluation of waste‐disposal problems calls for appreciation of two opposing tendencies–the tendency of wastes to move with </span>ground<span> </span>water<span> and the tendency to be attenuated near disposal sites by decay or inherent decrease in potency, by chemical and physical sorption, and by dilution through dispersion of </span>ground<span> </span>water<span>. Mixed wastes of differing attenuation habits represent special complex problems.</span></p>
application/pdf
10.1111/j.1745-6584.1965.tb01204.x
en
Wiley Blackwell
Environmental framework of ground‐water contamination
article