The following requirements apply to the construction,
modification or restoration of erosion protection structures:
A. The construction, modification or restoration of erosion
protection structures must:
(1) Not be likely to cause a measurable increase in erosion
at the development site or at other locations.
(2) Minimize and, if possible, prevent adverse effects
upon natural protective features, existing erosion protection structures
and natural resources such as significant fish and wildlife habitats.
B. All erosion protection structures must be designed
and constructed according to generally accepted engineering principles
or, where sufficient data is not currently available, a likelihood
of success in controlling long-term erosion. The protective measures
must have a reasonable probability of controlling erosion on the immediate
site for at least 30 years.
C. All materials used in such structures must be durable
and capable of withstanding inundation, wave impacts, weathering and
other effects of storm conditions for a minimum of 30 years. Individual
component materials may have a working life of less than 30 years
only when a maintenance program ensures that they will be regularly
maintained and replaced as necessary to the required 30 years of erosion
protection.
D. A long-term maintenance program must be included with
every permit application of construction, modification or restoration
of an erosion protection structure. The maintenance program must include
specifications for normal maintenance of degradable materials. To
assure compliance with the proposed maintenance programs, a bond may
be required.
Motorized and nonmotorized traffic must comply
with the following restrictions:
A. Motor vehicles must not travel on vegetation, must
operate waterward of the debris line and, when no debris line exists,
must operate waterward of the waterward toe of the primary dune or
bluff.
B. Motor vehicle traffic is prohibited on primary dunes,
except for officially designated crossing areas, and on bluffs.
C. Pedestrian passage across primary dunes must utilize
elevated walkways and stairways or other specially designed dune-crossing
structures.