Ill. Admin. Code tit. 8 § 256.10
Definitions for this Part can be located in Section 2 of the Lawncare Products Application and Notice Act. The following definitions shall also apply to this Part:
"Act" means the Lawncare Products Application and Notice Act [415 ILCS 65 ].
"Alteration" means changes in structures, processes or activities at a containment area that do not change the efficiency or effectiveness of the containment area.
"Impervious materials" means those substances utilized to construct containment areas that can be so constructed and maintained to provide for a water permeability (hydraulic conductivity) rate not to exceed 1 x1 0-6 centimeter per second.
"Modification" means changes in structures, processes or activities at a containment area that change the efficiency or effectiveness of the containment area, i.e., changes in capacity.
Ill. Admin. Code tit. 8, § 256.10
Amended at 26 Ill. Reg. 8808, effective June 7, 2002