All topsoil and, if necessary, suitable subsoil shall be separately removed, segregated, conserved and redistributed on all areas affected by the coal refuse disposal activities.
25 Pa. Code § 90.96
This section cited in 25 Pa. Code § 90.33 (relating to reclamation plan); 25 Pa. Code § 90.122 (relating to coal refuse disposal); and 25 Pa. Code § 90.140 (relating to haul roads and access roads: restoration).