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Are storm water outfall pipes exempt if the outlet is above the Ordinary High Water Mark (OHWM)?

April 26, 2017exempt high Mark ohwm outfall outlet pipes storm water

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Are storm water outfall pipes exempt if the outlet is above the Ordinary High Water Mark (OHWM)?

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No, new stormwater outlet pipes that are discharging to regulated stream/drain, lake or wetland require a permit. Repairs of existing outlets are exempt, and the riprap at the outlet is also exempt even if it extends below the OHWM. 8.