149.3—Critical Aquifer Protection Areas.
A Critical Aquifer Protection Area is either:
(a)
All or part of an area which was designated as a sole or principal source aquifer prior to June 19, 1986, and for which an areawide ground-water quality protection plan was approved, under section 208 of the Clean Water Act, prior to that date; or
(b)
All or part of a major recharge area of a sole or principal source aquifer, designated before June 19, 1988, for which:
(1)
The sole or principal source aquifer is particularly vulnerable to contamination due to the hydrogeologic characteristics of the unsaturated or saturated zone within the suggested critical aquifer protection area; and
(2)
Contamination of the sole or principal source aquifer is reasonably likely to occur, unless a program to reduce or prevent such contamination is implemented; and
(3)
In the absence of any program to reduce or prevent contamination, reasonably foreseeable contamination would result in significant cost, taking into account: