Ill. Admin. Code tit. 35, § 734.435
Sealing of Soil Borings and Groundwater Monitoring Wells
AUTHORITY: Implementing Sections 22.12 and 57.19 and authorized by Sections 5, 22, 27, and 57.14A of the Environmental Protection Act [415 ILCS 5/5, 22, 22.12, 27, 57.14A and 57.19].POLLUTION CONTROL BOARD
Boreholes and monitoring wells must be abandoned pursuant to regulations promulgated by the Illinois Department of Public Health at 77 Ill. Adm. Code 920.120.