Section R. 325.1753 - Gases and mineralized waterRule 253.
(1) If toxic or flammable gases are present the health officer shall be notified immediately and special construction features shall be used. The gas shall be vented not less than 8 feet above working grade to minimize the explosive hazard and remove the gas from direct human contact. The well casing shall be sealed tight to assure that all gas is exhausted through the vent. R 325.1764 and R 325.1766 prescribe plugging procedures for a dewatering well containing gas.(2) Where the water resources commission, consulting engineer, municipality, or other governmental unit involved in the dewatering project determines that disposal of contaminated water or water with a high mineral content or dissolved or entrained gases creates a problem, the department may make additional requirements.Mich. Admin. Code R. 325.1753