- BEFORE THE ILLINOIS POLLUTION CONTROL BOARD
IN THE MATTER OF:
COAL COMBUSTION WASTE (CCW) ASH
PONDS AND SURFACE IMPOUNDMENTS
AT POWER GENERATING FACILITIES:
PROPOSED NEW 35 ILL.
- Below are five different definitions for “surface impoundment”: (1) the Environmental Groups’
most recently proposed definition; (2) the Agency’s most recently proposed definition; (3) the
United States Environmental Protection Agency’s proposed definition at 75 Fed.
- Adm.
- Code, Parts 813 or 814.
- IEPA:
“Surface impoundment” means a natural topographical depression, man-made
excavation, or diked area where earthen materials provide structural support for
the containment of liquid wastes or wastes co...
R14-10,081914 PC# 3018 Pst Hrng Cmts ELPC, Etc 
