§ 190-215
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§ 190-215
Highlighted areas of poorly and very poorly drained soils.
Highlighted areas of poorly and/or very poorly drained
soils proposed to be filled.
Location, descriptions, details, and design criteria and
calculations for all structural, nonstructural, permanent,
and temporary erosion and sedimentation control
measures and BMPs.
Identification of all permanent control measures.
Identification of permanent snow storage areas.
Identification of snow management measures during
construction.
Description of the combination of sediment and erosion
control measures which are required to achieve
maximum pollutant removal such as:
[1] Sediment basins. For common drainage that serves
an area with 10 or more acres disturbed at one time, a
temporary (or permanent) sediment basin must
provide storage for a calculated volume of runoff from
a drainage area from a two-year, twenty-four-hour
storm, or equivalent control measures must be
provided, where attainable, until final stabilization of
the site. Where no such calculation has been
performed, a temporary (or permanent) sediment
basin providing 3,600 cubic feet of storage per acre
drained, or equivalent control measures, must be
provided where attainable until final stabilization of
the site. When computing the number of acres
draining to a common location, it is not necessary to
include flows from off-site areas and flows from on-
site areas that are either undisturbed or have
undergone final stabilization where such flows are
diverted around both the disturbed areas and the
sediment basin. In determining whether a sediment
basin is attainable, the operators may consider such
factors as site soils, slope, available area on-site, etc.
In any event, the operator must consider public
safety, especially as it relates to children, as a design
factor for the sediment basin, and alternative
sediment controls must be used where site limitations
would preclude a safe design.
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Hic it Discharge Detection and Eimination Plan
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