Wisconsin Administrative Code
Department of Natural Resources
NR 200-299 - Environmental Protection Wisconsin Pollutant Discharge Elimination System
Chapter NR 274 - Nonferrous metals manufacturing
Subchapter IV - Primary Copper Smelting
Section NR 274.041 - Specialized definitions
Universal Citation: WI Admin Code ยง NR 274.041
Current through August 26, 2024
The following definitions apply to the terms used in this subchapter:
(1) "Within the impoundment," for purposes of calculating the volume of process wastewater which may be discharged, has the following meanings:
(a) If the impoundment was constructed prior
to February 27, 1975, "within the impoundment" means the surface area within
the impoundment at the maximum capacity plus the surface area of the inside and
outside slopes of the impoundment dam and the surface area between the outside
edge of the impoundment dam and any seepage ditch adjacent to the dam upon
which rain falls and is returned to the impoundment, but the surface area
allowance for external appurtenances to the impoundment may not be more than
30% of the water surface area within the impoundment dam at maximum
capacity.
(b) If the impoundment
was constructed on or after February 27, 1975, "within the impoundment" means
the water surface area within the impoundment at maximum capacity.
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