The program shall provide guidance for assessing the threat of soil agrichemical contaminants to groundwater and recommending which sites need to establish a voluntary corrective action program.
The program shall establish appropriate site-specific soil cleanup objectives, which shall be based on the potential for the agrichemical contaminants to move from the soil to groundwater and the potential of the specific soil agrichemical contaminants to cause an exceedence of a Class I or Class III groundwater quality standard or a health advisory level. The Department shall use the information found and procedures developed in the Agrichemical Facility Site Contamination Study or other appropriate physical evidence to establish the soil agrichemical contaminant levels of concern to groundwater in the various hydrological settings to establish site-specific cleanup objectives.
No remediation of a site may be recommended unless (i) the agrichemical contamination level in the soil exceeds the site-specific cleanup objectives or (ii) the agrichemical contaminant level in the soil exceeds levels where physical evidence and risk evaluation indicates probability of the site causing an exceedence of a groundwater quality standard.
When a remediation plan must be carried out over a number of years due to limited financial resources of the owner or operator of the agrichemical facility, those soil agrichemical contaminated areas that have the greatest potential to adversely impact vulnerable Class I groundwater aquifers and adjacent potable water wells shall receive the highest priority rating and be remediated first.
Upon completion of the corrective action plan, the Department shall issue a notice of closure stating that site-specific cleanup objectives have been met and no further remedial action is required to remedy the past agrichemical contamination.
When a soil agrichemical contaminant assessment confirms that remedial action is not required in accordance with the Agrichemical Facility Response Action Program, a notice of closure shall be issued by the Department stating that no further remedial action is required to remedy the past agrichemical contamination.
415 ILCS 60/19.3