(a) Mulch shall
be applied to all regraded and topsoiled areas at rates adequate to control
erosion, promote germination of seeds and increase the moisture retention of
the soil. With the exception of outslopes of terrace contours, dams or
embankments, fills between terrace benches or any other approved slopes which
exceed 36%, the Department may waive the requirement for mulch under the
following conditions:
(1) When seeding can be
accomplished using a conventional agricultural farm drill.
(2) When the approved postdisposal land use
is for agricultural crops.
(3) When
annual grasses or small grains can be seeded immediately following final
grading, resulting in a quick vegetative cover which will provide adequate soil
erosion control.
(4) When the
permittee can demonstrate that alternative procedures will achieve the
standards for revegetation success of §
90.159 (relating to revegetation:
standards for successful revegetation).
(b) When required by the Department, mulches
shall be mechanically or chemically anchored to the soil surface.
(c) Chemical soil stabilizers may be used
alone or in combination with appropriate mulches.
Notes
The
provisions of this § 90.157 adopted December 19, 1980, 10 Pa.B. 4789,
effective 7/31/1982, 12 Pa.B.
2382; amended July 30, 1982, 12 Pa.B. 2473, effective
7/31/1982, 12 Pa.B.
2382.
This section cited in 25 Pa. Code §
90.33 (relating to reclamation
plan); 25 Pa. Code §
90.100 (relating to nutrients and
soil amendments); 25 Pa. Code §
90.105 (relating to stream channel
diversions); 25 Pa. Code §
90.108 (relating to hydrologic
balance: sedimentation ponds); 25 Pa. Code §
90.125 (relating to coal refuse
disposal: construction requirements); 25 Pa. Code §
90.150 (relating to protection of
fish, wildlife and related environmental values); and 25 Pa. Code §
90.165 (relating to prime
farmland: revegetation).
