ARSD 74:02:04:53. Cement grout requirements

Water used in making cement grout must be clean and may not contain oil or other organic material. The cement grouting of the well casing must be completed in one continuous operation. Bentonite may be added to cement grout in quantities not exceeding 2 pounds of bentonite for each 94-pound sack of cement. Up to 7 gallons of water may be mixed for each 94-pound sack of cement when 2 pounds of bentonite are added. Calcium chloride may be added to the cement grout except when the mixture will be used to grout thermoplastic casing.