Discharges from erosion and sedimentation control structures shall be controlled by energy dissipators, riprap channels or other devices, when necessary, to prevent accelerated erosion, to prevent deepening or enlargement of stream channels and to minimize disturbance of the hydrologic balance. Discharge structures shall be designed according to standard engineering design procedures.
25 Pa. Code § 89.25
This section cited in 25 Pa. Code § 89.173 (relating to performance standards).