§ 94.55 CASING.
   When permanent casing is installed, the casing and grouting shall meet the requirements for water well casing in the state’s Water Well Construction Code, being 77 Ill. Adm. Code 920. The outside of the casing shall be grouted prior to the grouting of the heat exchange equipment on the inside of the casing.
(Prior Code, 6 TCC 9-11)