25 Pa. Code § 281.253 - Sedimentation ponds
(a) Surface
drainage from the disturbed area shall be passed through a sedimentation pond
or a series of sedimentation ponds before leaving the site. The Department may
waive the required use of sedimentation ponds when a person demonstrates to the
Department that sedimentation ponds are not necessary to meet the requirements
of §
281.251 (relating to general
requirements).
(b) Sedimentation
ponds shall be constructed, operated and maintained under this section,
Chapters 102 and 105 (relating to erosion and sediment control; and dam safety
and waterway management) and the minimum design criteria contained in the
United States Soil Conservation Service's Engineering Standard 378, 'Pond' Pa.,
as amended.
(c) Sedimentation ponds
and other treatment facilities shall be maintained until removal of the ponds
and facilities is approved by the Department.
(d) A pond shall include a nonclogging,
dewatering device approved by the Department that will allow the draining of
the water from the inflow. The dewatering device may not be located at a lower
elevation than the maximum elevation of the sedimentation storage
volume.
(e) The ponds shall be
designed, constructed and maintained to prevent short circuiting to the maximum
extent possible.
(f) The design,
construction and maintenance of a sediment pond under this section does not
relieve the operator of the responsibility for complying with the applicable
treatment requirements and effluent limitations established under §
281.251.
(g) At a minimum,
sedimentation ponds shall be capable of treating the runoff resulting from a
25-year, 24-hour precipitation event.
(h) A sedimentation pond shall be designed
and inspected during construction under the supervision of a registered
professional engineer, who shall certify to the Department upon completion of
construction that the pond was constructed as approved in the permit.
Notes
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