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Exemption
April 11, 2022![Subheader | Low Impact Hydropower Subheader Image](https://lowimpacthydro.org/wp-content/uploads/2021/02/3-scaled.jpg)
Roller Compacted Concrete Dam
April 11, 2022Structural members of timber, concrete, or steel placed in channels or on the crest of a spillway to raise the reservoir water level but intended to be quickly removed, tripped, or fail in the event of a flood.