R 281.834 Sedimentation basins and cofferdams.

Rule 24. (1) A permittee shall construct sedimentation basins or cofferdams, where required by permit condition, before any other work is performed at the site crossing. The permittee shall maintain sediment removal efficiency of sediment basins during the development period by regular cleaning of sediment from the basins and proper spoil disposal. A detail sketch of a sediment basin is available on request from the department. (2) A permittee shall remove temporary weirs or cofferdams, including any materials trapped by them in the control of siltation, within 2 weeks of final cleanup. The department may require the intermittent removal of silt or sand by the permittee during construction for proper operation of sedimentation basins. In any event, a permittee shall clean the sedimentation basins before removal of weirs and coffer dams. (3) A permittee shall construct weirs of continuous interlocking steel sheeting, except where the department authorizes other substitute materials. When specified by the department, a permittee shall furnish a detail sheet of the weir installation. (4) A applicant is responsible for securing the necessary approval of private land owners where temporary additional right-of-way or easement is necessary to construct and operate a settling basin. An easement is not required in locations where the crossing is made on state-owned lands.