Purpose: Prevent entry of contaminated surface water into well and migration of contaminants into the unsaturated zone or saturated zone.
Prevent the commingling of chemically or physically different ground waters between seperate water bearing zones.
Restore, as far as feasible, hydrogeologic conditions that existed before the well was constructed.
Conditions Where Practice Applies:
This practice applies to any drilled, dug, driven, bored, or otherwise constructed vertical water well determined to have no further beneficial use.
