Minnesota Administrative Rules
Agency 144 - Health Department
Chapter 4725 - WELLS AND BORINGS
WELL AND BORING GENERAL CONSTRUCTION AND USE REQUIREMENTS
Part 4725.2020 - INTERCONNECTION OF AQUIFERS PROHIBITED
Current through Register Vol. 49, No. 13, September 23, 2024
Subpart 1. Aquifer interconnections.
A well or boring must not be constructed to interconnect aquifers separated by a confining layer or interconnect an unconsolidated aquifer and a bedrock aquifer.
Subp. 1a. Open bore hole, gravel pack, or screen in a confining layer.
A well or boring must not have open bore hole, gravel pack, or screen extending through more than:
The commissioner may establish less stringent standards than identified in this subpart where protective conditions exist or unique characteristics of the confining layer exist, including low permeability overlying materials, favorable groundwater gradients, the presence of fractures or permeable horizons in the confining layer, or reduced contaminant loading in recharge areas. The areas subject to less stringent standards under this provision will be designated on a map published by the commissioner, along with the standards that do apply to those areas.
Subp. 2. [Repealed, 33 SR 211]
Subp. 3. [Repealed, 33 SR 211]
Statutory Authority: MS s 103I.101; 103I.111; 103I.205; 103I.221; 103I.301; 103I.401; 103I.451; 103I.501; 103I.525; 103I.531; 103I.535; 103I.541; 103I.621; 144.05; 144.12; 144.122; 144.383; 157.04; 157.08; 157.09; 157.13
