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When Would a Project Require Retention/Detention (Zero Increase in Runoff)?

April 26, 2017detention increase project require retention Runoff Zero

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When Would a Project Require Retention/Detention (Zero Increase in Runoff)?

1 Answer

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10 Posted

When it proposes one acre or more of impervious surfaces. This includes roofs, paved areas and walkways. When the existing capacity of the county’s drainage facility is inadequate to handle the additional stormwater.