All test borings shall be constructed in accordance with the following and shall be constructed in a manner as to prevent all known sources of contamination from entering the boring at any time.
(A) Drilling mud additives shall be stored in clean containers and shall be free of material that may adversely affect the aquifer.
(B) Water used for cooling parts of engines, air compressors or other equipment may not be returned into the boring.
(C) Drilling mud, cuttings and discharge water shall not be disposed of in a manner so as to create damage to public or private property.
(D) Exploratory borings encountering flowing artesian conditions should be constructed to prevent erosion of the aquifer or the overlying confining mantle.
(E) Any boring which encounters a karst feature shall be cased and grouted to prevent the introduction of surface water into the ground water and to prevent the passage of water from one aquifer to another.
(F) In the case of an unexpected emergency, including, but not limited to, any act or condition that would affect the health, welfare and property of area residents, the explorer shall have the ability to cap the boring at any time. In this instance the explorer shall immediately notify the city and proper state agencies of such an emergency. In case of such an emergency, all costs shall be borne by the explorer.
(G) A boring for aggregate exploration must not be used for any purpose that is regulated under M.S. Ch. 103I, as it may be amended from time to time, and Minn. Rules Ch. 4725 or 4727, unless that well or boring is constructed in accordance with all applicable requirements of statute and rule, including licensing, notification, permitting, construction, sealing, testing and reporting requirements. Wells and borings regulated under state statute and rule include water supply wells, dewatering wells, monitoring wells, bored geothermal heat exchangers, elevator borings, environmental bore holes and exploratory borings, as defined in Minn. Rules Ch. 4727.
(Prior Code, § 345.07)