35 Ill. Adm. Code 738.102
Definitions
Section 738
Section 738.102 Definitions
"Injection
interval" means that part of the injection zone in which the well is
screened or in which the waste is otherwise directly emplaced.
"Transmissive fault or fracture" is a fault or fracture that
has sufficient permeability and vertical extent to allow fluids to move between
formations.
"USEPA hazardous waste number" means the number assigned by
USEPA pursuant to each hazardous waste listed in Subpart D of 35 Ill. Adm. Code
721 and to each characteristic identified in Subpart C of 35 Ill. Adm. Code
721.
BOARD NOTE: Derived from 40 CFR 148.2 (2017).