Zone of attenuation definition

Zone of attenuation means the three dimensional region formed by excluding the volume occupied by the waste placement from the smaller of the volumes resulting from vertical planes drawn to the bottom of the uppermost aquifer at the property boundary or 100 feet from the edge of one or more adjacent units.
Sample 1Sample 2Sample 3
Zone of attenuation means a three-dimensional space, or volume, within which constituents from the fill operation may cause the groundwater to exceed the Class I groundwater quality standards at 35 Ill. Adm. Code 620.410. Vertically, the zone of attenuation extends from the ground surface to the bottom of the uppermost aquifer. Horizontally, the maximum extent of the zone of attenuation is the property boundary or 100 feet from the edge of the fill operation, whichever
Sample 1
Zone of attenuation means the three dimensional region formed by excluding the volume occupied by the waste placement in Brickyard Unit I from the volume resulting from a vertical plane drawn to the bottom of the uppermost aquifer as shown in the attached Figure 1, dated August 2014.
Sample 1

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