Amends the Environmental Protection Act. Provides that within 180 days after the effective date of the amendatory Act, the Pollution Control Board shall adopt amendments to the rules adopted under specified provisions to require groundwater monitoring at all clean construction or demolition debris fill operations and all uncontaminated soil fill operations. Provides that the groundwater monitoring requirements adopted under specified provisions shall be designed to detect and prevent any exceedance of the Board's Class I groundwater quality standards and meet specified requirements. Provides that groundwater monitoring shall be required for all clean construction or demolition debris fill operations and all uncontaminated soil fill operations unless, before the effective date of the amendatory Act, the owner or operator has completed post-closure maintenance and, for clean construction or demolition debris fill operations, received specified notice from the Environmental Protection Agency, or, for uncontaminated soil fill operations, submitted specified information to the Agency. Effective immediately.