[Adopted 2-13-2006 by Ord. No. 2005-28]
This chapter is applicable to any situation involving any disturbance to the terrain, topsoil or vegetative ground cover upon any property within the Town of Johnston after determination of applicability by the Building Official or his or her designee based upon criteria outlined in §
291-3. Compliance with the requirements as described in this chapter shall not be construed to relieve the owner/applicant of any obligations to obtain necessary state or federal permits.
Maintenance of all erosion and sediment control
devices under this chapter shall be the responsibility of the owner.
The erosion and sediment control devices shall be maintained in good
condition and working order on a continuing basis. Watercourses originating
and located completely on private property shall be the responsibility
of the owner to their point of open discharge at the property line
or at a communal watercourse within the property.
Neither approval of an erosion and sediment
control plan nor compliance with any condition of this chapter shall
relieve the owner/applicant from any responsibility for damage to
persons or property nor impose any liability upon the city or Town
for damages to persons or property.
If, at any stage, the work in progress and/or
completed under the terms of an approved erosion and sediment control
plan does not conform to the plan, a written notice from the Building
Official or his or her designee to comply shall be transmitted by
certified mail to the owner.
A. The notice shall state the nature of the temporary and permanent corrections required and the time limit within which corrections shall be completed as established in §
291-12B of this chapter.
B. Failure to comply with the required corrections within the specified time limit is considered a violation of this chapter, in which case the performance bond or cash or negotiable securities deposit is subject to notice of default, in accordance with §
291-6B and
C of this chapter.
As used in this chapter, the following terms
shall have the meanings indicated:
APPLICANT
Any persons, corporation, or public or private organization
proposing a development that would involve disturbance to the natural
terrain as defined in this chapter.
CUT
An excavation. The difference between a point on the original
ground and a designated point of lower elevation on the final grade.
Also, the material removed in excavation.
DEVELOPMENT PROJECT
Any construction, reconstruction, demolition, or removal
of structures, roadways, parking, or other paved areas, utilities,
or other similar facilities, including any action requiring a building
permit by the city or Town.
EROSION
The removal of mineral and/or organic matter by the action
of wind, water, and/or gravity.
EXCAVATE
Any act by which earth, sand, gravel, or any other similar
material is dug into, cut, removed, displaced, relocated, or bulldozed,
and includes the resulting conditions.
FILL
Any act by which earth, sand, or other material is placed
or moved to a new location above the ground. The fill is also the
difference in elevation between a point of existing undisturbed ground
and a designated point of higher elevation of the final grade.
LAND-DISTURBING ACTIVITY
Any physical land development activity that includes such
actions as clearance of vegetation, the moving or filling of land,
removal or excavation of soil or mineral resources, or similar activities.
RUNOFF
The surface water discharge or rate of discharge of a given
watershed after a fall of rain or snow, and including seepage flows
that do not enter the soil but run off the surface of the land. Also,
that portion of water that is not absorbed by the soil but runs off
the land surface.
SEDIMENT
Solid material, both mineral and/or organic, that is in suspension,
is being transported, or has been moved from its site or origin by
wind, water, and/or gravity as a product of erosion.
SOIL EROSION AND SEDIMENT CONTROL PLAN
The approved document required before any person may cause
a disturbance to the natural terrain within the city or Town as regulated
by this chapter. Also referred to as "erosion and sediment control
plan," "approved plan."
WATERCOURSE
Any tidewater or coastal wetland at its mean high-water level,
and any freshwater wetland at its seasonal high-water level, including,
but not limited to, any river, stream, brook, pond, lake, swamp, marsh,
bog, fen, wet meadow, or any other standing or flowing body of water.
The edge of the watercourse shall be used for delineation purposes.
[Adopted 8-9-2011 by Ord. No. 2011-9]
No permit for construction/post-construction site runoff shall
be required for the following activities:
A. Construction, alteration, or use of any additions to existing single-family
or duplex homes or related structures, provided that the ground coverage
of any addition is less than 1,000 square feet and construction, alteration
and use does not occur within 100 feet of any watercourse and the
slopes at the site of land-disturbance do not exceed 8%.
B. Use of a home garden in association with on-site residential use.
C. Accepted agricultural management practices such as seasonal tilling
and harvest activities associated with property utilized for private
and/or commercial agricultural or silvacultural purposes.
D. Excavations or improvements other than those described in Subsection
A(1) of this section which exhibit all of the following characteristics:
(1) Does not result in a total displacement of more than 50 cubic yards
of material;
(2) Has no slopes steeper than eight feet vertical and 100 feet horizontal
or approximately 8%;
(3) Has all disturbed surface areas promptly and effectively protected
to prevent soil erosion and sedimentation.
E. Grading, as a maintenance measure, or for landscaping purposes on
existing developed land parcels or lots; provided that all bare surface
is immediately seeded, sodded or otherwise protected from erosive
actions and all of the following conditions are met:
(1) The aggregate area of activity does not exceed 2,000 square feet;
(2) The change in elevation does not exceed two feet at any point; and
(3) The grading does not involve a quantity of fill greater than 18 cubic
yards, except where fill is excavated from another portion of the
same parcel and the quantity does not exceed 50 cubic yards.
F. Grading, filling, removal, or excavation activities and operations undertaken by the Town under the direction and supervision of the Department of Public Works for work on streets, roads, or rights-of-ways dedicated to public use, provided that adequate and acceptable erosion and sediment controls are incorporated, in engineering plans and specifications, and employed. Appropriate controls apply during construction as well as after the completion of these activities. All work shall be undertaken in accordance with the performance principles provided for in §
291-5C and the standards and definitions that may be adopted to implement the performance principles.
G. Any emergency activity that is immediately necessary for the protection
of life, property, or natural resources.