These exemptions do not mean that a permit is not required for
the specific activity if required by other federal, state, County
or local law, ordinance, rule or regulation. The following categories
of development are exempted from the requirements of providing a stormwater
management plan:
A. Agricultural land management practices.
B. All new development on sites where no previous development has occurred
conducting a land disturbing activity of no more than 5,000 square
feet (0.1148 acre) which are not located within the Buffer Area of
the County's Critical Area Overlay Zones as established in the
Charles County Zoning Ordinance shall be exempt from providing stormwater management.
Any cumulative disturbance exceeding 5,000 square feet shall not be
exempt. If the initial disturbance occurred prior to 1985, then stormwater
management shall only be provided for a new development. If the initial
disturbance of the site occurred after 1985 and the site qualified
for an exemption for disturbance of less than 5,000 square feet, then
stormwater management shall be provided for the entire disturbance
(initial and proposed) once the disturbance on the site exceeds 5,000
square feet.
C. Additions or modifications to existing single-family detached residential
structures that do not disturb more than 5,000 square feet of land
area.
D. Land disturbance activities or developments which the Administration
determines will be regulated under specific state laws that provide
for the management of stormwater runoff.