Effective on: 1/1/1901

Effective on: 1/1/1901

Effective on: 1/1/1901

Figure 10.2-1 Measurement of Buffer

2. Buffer Vegetation

   All areas lying within 100 feet, on both sides of the protected river corridor shall consist of a native, undisturbed vegetative buffer. Such vegetative buffer shall not be removed, altered, or otherwise diminished, except as provided for in this Section.

   Except as allowed in Sec. 10.2.5, land disturbance within the river corridor shall be prohibited. Where land disturbance is authorized pursuant to these regulations, a native, vegetative buffer must be restored within 30 days of cessation of the land disturbance, if no construction is to follow, or within 30 days of the completion of the construction.

Effective on: 1/1/1901

Effective on: 1/1/1901

1. Single-Family Residential Detached

   Single-family detached dwellings may be permitted, provided that:

   1. The dwelling is located on a tract of land containing at least two (2) acres, excluding any area that lies between the banks of the protected river; provided, however, that lots of record that are less than two (2) acres as of the Effective Date of this Ordinance may be developed in accordance with this Section.
   2. There is only one (1) such dwelling on each two (2) acre tract of land; and
   3. Septic tanks and septic drain fields are not located within the PRC buffer.
2. Tree Farming / Forestry

   Tree farming, forestry and harvesting are permitted, provided that:

   1. Forestry activity shall be consistent with best management practices established by the Georgia Forestry Commission; and
   2. Forestry activity shall not impair the drinking quality of the river water as defined by the Federal Clean Water Act, as amended.
3. Wildlife Management and Fishing Operation

   Wildlife management and commercial fishing operation activities shall be allowed, provided that they are consistent with the purposes of O.C.G.A. §12-2-8, as amended.

4. Park

   Passive recreational usage consistent either with the maintenance of a natural vegetative buffer or with non-motorized river dependent recreation shall be permitted. Paths and walkways consisting of pervious materials are consistent with this criterion. Parking lots are not consistent with this criterion. No impervious surfaces shall be permitted.

5. Dock, Private
6. Dock, Residential Community

Effective on: 1/1/1901

Effective on: 1/1/1901

Effective on: 1/1/1901

Effective on: 1/1/1901

Effective on: 1/1/1901

1. Secondary Containment for New Above-Ground Storage Tanks

   All new above-ground chemical or petroleum storage tanks shall have secondary containment for 110% of the volume of such tanks or 110% of the volume of the largest tank in a cluster of tanks.

2. Liners for New Agricultural Waste Impoundment Sites

   New agricultural waste impoundment sites shall be lined if they are within:

   1. A high pollution susceptibility area;
   2. A medium pollution susceptibility area and exceed 15 acre-feet in size; or
   3. A low pollution susceptibility area and exceed 50 acre-feet in size.

      At a minimum, the liner shall be constructed of compacted clay having a thickness of one (1) foot and a vertical hydraulic conductivity of less than 5x10-7cm/sec or other criteria established by the Natural Resource Conservation Service. Applications for a building permit for a new agricultural waste impoundment site that requires a liner under the provisions of this subsection shall include a site development plan that shows the location and design of the liner.

3. On-Site Sewage Management System Tanks and Drain Fields
   1. No construction may proceed on any building or manufactured home to be serviced by an on-site sewage management system tank and drain field without applying for and obtaining an On-Site Sewage Management System Construction Permit from the Chatham County Health Department as stated in Chapter 290-5-26 On-Site Sewage Management Systems of the Georgia Department of Public Health.
   2. As provided in Chapter 290.5.26.7 Absorption Fields of the On-Site Management Systems of the Georgia Department of Public Health, no absorption field shall be installed in areas where groundwater, soil characteristics or adverse geological formation may interfere with the absorption or effective treatment of sewage effluent.
   3. New lots shall meet the minimum lot sizes as identified in the rules of the Georgia Department of Natural Resources Chapter 391-1-16 Rules for Environmental Planning Criteria. In no case shall the minimum lot size be less than that allowed by the base zoning district.
4. Impervious Surfaces for Hazardous Materials Handling Operations

   Within all pollution susceptibility areas, new facilities that handle hazardous constituents in amounts of 10,000 pounds or more on any one day shall perform their operations on impervious surfaces and in conformance with any applicable Federal spill prevention requirements and the City of Savannah Fire and Life Safety Code requirements. This provision shall not apply to underground storage tanks. Applications for a building permit for hazardous materials handling operations as defined in this subsection shall include a site plan that shows the location and design of any required spill and leak collection systems.

5. Permanent Stormwater Infiltration Basins

   Permanent stormwater infiltration basins shall not be constructed in areas having high pollution susceptibility.

Effective on: 1/1/1901

Effective on: 1/1/1901

Effective on: 1/1/1901

Effective on: 1/1/1901

Effective on: 1/1/1901

Effective on: 1/1/1901

Effective on: 1/1/1901

1. Serving as a natural storage area for high waters and absorbing rainfall into the soil thereby minimizing flooding potential;
2. Serving as a sediment and stormwater control mechanism that maintains water quality by filtering suspended solids, nutrients, and harmful or toxic substances from stormwater runoff before it enters nearby waters;
3. Helping to provide clean ground and surface drinking water supplies and maintaining the chemical, physical and biological integrity of open bodies of water;
4. Providing temporary refuge for wetland fauna during high water episodes and critical habitat for animals dependent upon but not resident in wetlands and marshes;
5. Accommodating slight variations of wetland and marsh boundaries over time due to hydrologic or climatologic effects; and
6. Serving as an ecological transition zone to reduce the impacts of development upon wetland and marsh vegetation, wildlife and fish habitats, and nursery areas for fisheries.

Effective on: 1/1/1901

Effective on: 1/1/1901

1. Wetland Buffer

   Wetland buffers are a minimum of 35 feet and are required along jurisdictional wetlands. The buffers shall be measured from the United States Army Corps of Engineers approved Jurisdictional Determination and/or the United States Army Corps of Engineers delineation of the waters on the site.

Figure 10.5-1 Wetland Buffer

2. Marsh Buffer

   Marsh buffers are a minimum of 35 feet and are required along all marsh. As required by O.C.G.A. §12-7-1, the Georgia Erosion and Sedimentation Control Act, the state buffer is 25 feet and shall be measured from the Department of Natural Resources jurisdictional marsh line as established by Coastal Resources Division in accordance with the Coastal Marshlands Protection Act of 1970. The remaining 10 feet is a local buffer and is measured from the state buffer in accordance with O.C.G.A. §12-7-1 et seq., Georgia Erosion and Sedimentation Control Act.

Figure 10.5-2 Marsh Buffer

Effective on: 1/1/1901

1. Soil disturbance which includes but is not limited to grading, stripping of topsoil, plowing, cultivating or other similar practices;
2. Clearing of vegetation;
3. Burning of vegetation;
4. Filling;
5. Dumping;
6. Application of pesticides, herbicides or chemical fertilizer;
7. The keeping, grazing or maintenance of animals;
8. Storage;
9. Masonry and wrought iron fencing and any column greater than 36 square inches and no closer than four (4) feet on center spacing; and
10. Septic systems.

Effective on: 1/1/1901

1. Public sewer line easements paralleling the water, lake, impoundment, wetland, and/or marsh, except that all easements (permanent and construction) and land disturbance should be at least 25 feet from the mean high water line in coastal marsh and wetlands or the top of the bank for streams, lakes, and impoundments. This includes such impervious surface as is necessary for the operation and maintenance of the utility, including but not limited to manholes, vents and valve structures. This exemption shall not be construed to allow the construction of roads, bike paths, or other transportation routes in such easements, regardless of the type of paving material used.
2. Land disturbing activities by governments within public rights-of-way existing as of the Effective Date of this Ordinance or approved under the terms of this Section. Development activities are allowed only if they cannot reasonably be located outside the buffer.
3. Land disturbing activities within utility easements existing as of the Effective Date of this Ordinance or approved under the terms of this Section when necessary for the operation and maintenance of the utility, including but not limited to manholes, vents and valve structures.
4. Emergency maintenance and repairs necessary to preserve life and/or property. However, when emergency work is performed under this Section, the person performing it shall report such work to the City Manager or his or her designee within 48 hours of the commencement of the work. The City Manager or his or her designee shall require mitigation of any negative impacts such emergency work may have caused to the buffer or to water conveyance capacity, stability or water quality.
5. Forestry or silvicultural activities on land that is zoned for forestry or silvicultural uses, provided these activities are not incidental to other land disturbing activity and are conducted using applicable best management practices. If such activity results in land disturbance in the buffer that would otherwise be prohibited, no land disturbing activity other than normal forest management practices will be allowed on the entire property for three (3) years after completion of such forestry and silvicultural activities.
6. Crossings for water lines or for sewer lines provided that they:
   1. occur at an angle, as measured from the point of crossing, within 25 degrees of perpendicular to the wetland or marsh;
   2. cause a width of disturbance of not more than 50 feet within the buffer; and
   3. adequate erosion control measures are incorporated into the project plans and specifications and are implemented.
7. Activities for the purpose of constructing public water supply intake, public wastewater outfall structures or stormwater outfalls.
8. Activities to restore and improve vegetation, water quality and/or aquatic habitat.
9. Any trimming or pruning of vegetation for the purpose of creating a keyhole view corridor and/or access path. This shall not allow for the removal of trees.
10. Creation of an access path to water-dependent uses through the buffer.
11. Individual trees in the buffer may be removed only if they are in danger of damaging real property or are diseased, upon approval by the City Manager or his or her designee.
12. Structural maintenance and repair of any damaged structure (including replacement only within the same or lesser footprint) that existed in the buffer as of the Effective Date of this Ordinance. This activity may only occur outside of the state buffer.

Effective on: 1/1/1901

1. Applicability

   A Modified Wetland or Marsh Buffer Permit may be issued only if the land disturbing activity constitutes one of the following:

   1. Any activity listed in Sec. 10.5.6.
   2. A land disturbing activity that results in a reduction of buffer width over a portion of a parcel, in exchange for an increase in buffer width elsewhere on the same parcel, provided that the average buffer width on the entire parcel equals 35 feet and the buffer width at any given point on the parcel is not less than 25 feet; and, provided further, that all non-native plants within the disturbed area(s) are replaced with native plants as identified in the Coastal Riparian Buffer Planting Manual, as amended ; or
   3. The replacement of non-native plants with native plants as identified in the Coastal Riparian Buffer Planting Manual, as amended.
2. Application Requirements
   1. For any proposed land disturbance activity within a marsh or wetland buffer, the following information shall be shown on the site development plan, plat or other required document, as applicable:
      1. The location of all riparian lands, including jurisdictional wetlands and marshes, within and adjacent to the wetland or marsh buffer;
      2. The existing and proposed boundaries of the buffer, including any state and local buffers; and,
      3. A description of the land disturbance activities and any structures that are proposed within the buffer, if any.
      4. A copy of the Jurisdictional Determination letter as issued from the State of Georgia or the U.S. Army Corps of Engineers,
      5. A plan that shows how each Best Management Practice (BMP) will be achieved or the redirection of flow to include all necessary calculations and topography.
   2. To remove non-native plants or turf grasses or install native plants as identified in the Coastal Riparian Buffer Planting Manual, as amended, a landscape plan detailing these efforts shall be submitted to the City Manager or his or her designee before any work begins.
   3. The City Manager or his or her designee may request additional information necessary to review the application.
3. Criteria for Approval

   The City Manager or his or her designee can approve a modification to the local buffer after making a determination that there is a no feasible alternative design that would result in no disturbance to the buffer. If there is no feasible alternative design, the proposed disturbance shall be the minimum disturbance necessary to accomplish the purpose of the proposed land disturbance activity.

   In order for a modification of the buffer to be approved, compliance with the following standards is also required:

   1. The proposed land disturbance will be conducted in accordance with all design guidelines, Low Impact Development techniques, and other guidance found in the Coastal Riparian Buffer Guidance Manual, as amended; and
   2. If a decrease in the average buffer width is allowed then BMPs must be installed or flow must be directed to the increased buffer areas referenced in Sec. 10.5.7 a.ii.

Effective on: 1/1/1901

Effective on: 1/1/1901

Effective on: 1/1/1901