Section 604.1000  Presedimentation

a)         Basin Design:  presedimentation basins must have the capability for dewatering.  These basins may include hopper bottoms or a continuous mechanical sludge removal apparatus;

b)         Inlet:  short-circuiting must be prevented;

c)         Bypass:  provisions for bypassing presedimentation basins must be included; and

d)         Detention time must be adequate.  Unless otherwise approved by the Agency under Section 604.145(b), three hours detention is the minimum period.