The Great Yarmouth Third River Crossing Development Consent Order 2020

43.  In constructing and operating the outfall pipe, the undertaker must comply with the following requirements—

(a) prior to constructing the outfall pipe, the undertaker must obtain the approval of the Board to a maximum rate of discharge of surface water through the outfall pipe;

(b) the undertaker must ensure that the approved maximum rate of discharge is not exceeded;

(c) the headwall must comprise a recessed precast concrete unit of adequate dimensions;

(d) all material excavated during the construction of the headwall must be removed from the watercourse;

(e) the area around the headwall must be restored to its previous condition as soon as possible following construction of the headwall;

(f) in constructing the outfall pipe the undertaker must ensure that erosion protection sufficient to prevent scouring of the bank of the watercourse is provided beneath the outfall pipe, across the bed and extending across the far bank to the same level as the outfall pipe and to at least one metre either side of it;

(g) no part of the outfall pipe or associated erosion protection measures is to protrude beyond the existing bank profile; and

(h) discharge through the outfall is to consist solely of surface water runoff and must not include any treated foul water.