8 Ill. Adm. Code 259.240
Groundwater Cleanup Objectives
Section
259.240 Groundwater Cleanup Objectives
a) The
groundwater cleanup objectives for Class I and Class II groundwater are listed
in Appendix D of this Part.
b) The
applicant may use the Class II groundwater cleanup objectives in Appendix D of this
Part to calculate a site-specific SCO using the equations in Section 259.350 of
this Part, if adequately demonstrated, during an initial, final or detailed
site assessment, that the uppermost 15 feet of groundwater underlying the
contaminated area is classified as Class II groundwater. If this cannot be
demonstrated, the Class I groundwater objective shall be used.
c) If
groundwater samples from a facility contain pesticides for which groundwater
cleanup objectives are not listed in Appendix C of this Part, the applicant
should contact the Department for a determination of the groundwater objective.