(A) Geothermal closed loop system wells are the only wells allowed, and these should not be located in the sanitary isolation radius of a public water supply well. The isolation radius is a 300-foot radial distance for any community public water supply well. These wells should also be a distance of no less than 50 feet from any sanitary or storm sewer line, a minimum of 50 feet from any street right-of-way, a minimum of 50 feet from any improved or unimproved surface used by any type of motor vehicle, and a minimum of 50 feet from any railroad. These wells shall also not be installed in any declared wetland area, or on any property determined by the Village to be a potential contamination area.
(B) For geothermal wells using a closed loop design, a food-grade propylene glycol or equivalent substance should be used as an anti-freeze/transfer material.
(C) The piping used in the geothermal well closed loop system carrying propylene glycol should be pressure tested to 100 psi. before use, and periodically thereafter while in operation to insure the integrity of the joints.
(D) The borehole for the closed loop geothermal well should be filled with a bentonite grout to prevent contamination of ground water via an inadequately sealed borehole.
(E) The well casing shall extend a minimum of 18 inches above the surrounding grade level with no visual obstructions.
(F) Abandonment of test wells. Upon completion of testing, a test hole shall be either completely filled with a bentonite grout, concrete or such other material as will prevent contaminants from entering ground water, or converted into a well. Construction of which shall comply with all applicable requirements of Ohio Administrative Code 3745-9.
(G) A geothermal well may not be installed on any property without first obtaining an approved zoning permit from the Village of Leipsic.
(Ord. 2578, passed 4-6-09)