Section R12-15-812. Special Aquifer Conditions

A.      Artesian wells

1.        The well casing shall extend into the confining formation immediately overlying the artesian aquifer and shall be grouted from a minimum of ten feet into the confining formation to the land surface to prevent surface leakage into and subsurface leakage from the artesian aquifer.

2.        If leaks occur adjacent to the well or around the well cas- ing, within 30 days the well shall be completed with the seals, packers, or casing and grouting necessary to elimi- nate such leakage or the well shall be abandoned accord- ing to R12-15-816.

3.        If the well flows at land surface, the well shall be equipped with a control  valve,  or suitable alternative means of completely controlling the flow, which must be available for inspection at the well site at all times.

B.       Mineralized or polluted water. In all water-bearing geologic units containing mineralized or polluted water as indicated by available data, the borehole shall be cased and grouted so that contamination of the overlying or underlying groundwater zones will not occur.

Historical Note

Adopted effective March 5, 1984 (Supp. 84-2). Amended

effective June 18, 1990 (Supp. 90-2).