WSCO_GRAN_WSWP Ordinance_20210107

DIVISION 3. - WATER SUPPLY WATERSHEDS
Sec. 32-351. -Intent.
The purpose of this division is to promote the health, safety, and welfare of the citizens of the county
and to protect the quality of water in water supply reservoirs by implementing water supply watershed
protection standards.
(Ord. of 7-12-1999, § 05.210)
Sec. 32-352. -Applicability.
The provisions of this division shall apply within the areas that were designated as a public water
supply watershed by the state environmental management commission. These areas shall be defined
and established on a map entitled "Granville County Zoning Map Atlas."
(Ord. of 7-12-1999, § 05.211)
Sec. 32-353. -Establishment of watershed areas.
The county has designated the watershed areas indicated in this section. The critical areas (CA) are
those areas normally within one-half mile of each drinking water intake. The general watershed areas
(GW) are additional areas —generally, all other areas in the watershed outside that one -half -mile critical
area.
(1) WS-II critical areas (INS -II -CA) are Lake RogerslLedge Creek, Lake Butner/Knapp of Reed's
Creek, and Lake Devin/Hatcher's Run.
(2) WS-ll general watershed areas (INS -II -GIN) are Lake Rogers/Ledge Creek, Lake Butner/Knapp
of Reed's Creek, and Lake Devin/Hatcher's Run.
(3) WS-ll/ general watershed areas (WS-III-GW) are Lake Michie/Flat River.
(4) INS -IV critical areas (WS-IV-CA) are Oxford Pipe/Tar River and Falls Lake/Neuse River.
(5) WS-IV general watershed areas (WS-IV-GIB are Oxford Pipe/Tar River and Falls Lake/Neuse
River.
(Ord. of 7-12-1999, § 05.212)
State Law reference— Authority to establish county service districts, G.S. 153A-300 et seq.;
authority to create watershed improvement programs, G.S. 153A-440.1.
Sec. 32-354. -Uses.
(a) Prohibited uses. Waste facilities, disposal, recycling or storage uses shall be prohibited within the
watersheds, except in the WS-IV general watershed area, where they may be permitted by special
use permit.
(b) Permitted uses. All uses permitted in the zoning district may be permitted subject to the standards of
this section.
(Ord. of 7-12-1999, § 05.220)

Sec. 32-355. - Agriculture, silviculture and transportation facilities.
The following standards shall govern the following uses when they are located in a public water
supply watershed:
(1) Agriculture. The Granville Soil and Water Conservation District office shall be the designated
management and enforcement agency responsible for implementing the agricultural activity
rules described in the state's watershed protection rules, chapter 143, article 21. Agricultural
activities shall be subject to the provisions of the Food Security Act of 1985 and the Food,
Agriculture, Conservation, and Trade Act of 1990 (PL 101-624) and the rules and regulations of
the soil and water conservation commission.
(2) Silviculture (forestry). The county forest service office of the state division of forest resources
shall be the designated management and enforcement agency responsible for implementing the
silviculture rules described in the state's watershed protection rules, chapter 143, article 21.
Silviculture activities shall be subject to the provisions of the forest practices guidelines related
to water quality.
(3) Transportation facilities. The construction of new roads and bridges should minimize built -upon
area, divert stormwater away from surface water supply waters as much as possible, and
employ best management practices to minimize water quality impacts. The construction of new
roads in a critical area should be avoided, if possible. The county shall act in such a way as to
attain these goals when private roads and bridges are involved. The state department of
transportation shall employ best management practices as outlined in their document, "Best
Management Practices for the Protection of Surface Waters," when involved in road, bridge and
other construction.
(Ord. of 7-12-1999, § 05.221)
Cross reference— Animals, ch. 11.
Sec. 32-356. -Development standards.
All development shall
be governed
by
lot size, density or built -upon area standards as set forth in the
following table 05.230:
TABLE 05.230
DEVELOPMENT STANDARDS FOR WATERSHED PROTECTION AREAS
District z Use
tBuilt-
Lot I
(Density � Upon
Size
Area
WS-II Critical Area ! Single -Family `:8Q000
Single -Family Cluster �0.50
All Other Residential
6%
Nonresidential l 6%

WS-II General Watershed Area i Single -Family 40,000 j
I
Single -Family Cluster 1.00
i
fAII Other Residential 12%
Nonresidential ! 12%
I
WS-III General Watershed Area Single -Family 20,000 4
Single -Family Cluster f 12.00
1
EAll Other Residential 24%
Nonresidential
WS-IV Critical Area Single -Family E20,000
i f
Apply to new development
activities that require an Single -Family Cluster j 2,00
erosion/sedimentation E
I
I �
All Other Residential 124%
Nonresidential k 24%
WS-IV General Watershed Area Single -Family with curbs ! 20,000�
I.
Single -Family without curbs i 14,000 j
i
Apply to new development + ( f
activities that require an
(Single -Family Cluster with curbs �2.00 i
erosion/sedimentation control plan j
under state law
Single -Family Cluster with
out curbs � i3 00 f 24%
(Single -Family Cluster with curbs in Falls c
watershed if stormwater control i 3.00
complies with nutrient loading standards

section 32-406 and volume runoff
standards (section 32-408)
I
�—
I
Other Residential with curbs
24%
Other Residential without curbs
36%
Nonresidential with curbs
24%
Nonresidential without curbs
36%
Any existing development as of January 1, 1993, may be continued and maintained subject to the
provisions provided in this article. Expansions to occupied lots or existing structures classified as existing
development must meet the requirements of this article based on the remaining pervious built -upon area
of the lot. Existing impervious built -upon development area as of January 1, 1993, shall not be included in
the built -upon requirements of table 05.230,
(Ord, of7-12-1999, § 05.230; Ord. of4-3-2000, §§ 1, 2; Amend. oft-1-2010, § 1; Amend. of5-
16-20160) , § 1)
Sec. 32-357. - Stormwater.
All development within water supply watersheds shall be designed and located to minimize
stormwater runoff impact to the receiving waters and minimize concentrated stormwater flow. Plans to
achieve these goals shall be included in the application and will be considered as part of the final
approval, as amended. Designs to limit runoff impact should include:
(1) The creation of grass swells (berms) between built -upon areas and receiving areas;
(2) The placement of vegetative buffers, rock -check dams, and other controls between the built -
upon areas and stormwater receiving areas;
(3) The directing of land disturbing activities and development away from environmentally sensitive
areas such as 100-year floodplains, wetlands, low-lying areas, etc.;
(4) Maximum preservation of natural areas of forest or meadow as open space, as opposed to
manicureA landscaped areas. Where the development has an incorporated property owners'
association, the title of the open space area shall be common open space owned and managed
by the property owners' association. Where a property owners' association is not present, the
individual landowners shall be responsible for preserving the open space. All open space,
whether in common or individual ownership, shall be preserved by placing a conservation
easement in favor of the county on the open space. All subdivision plats, site plans and other
documents shall detail the exact location and boundaries of the open space and nondisturbed
area.
(Ord. of 7424999, § 05.231)
Sec. 32-358. -Shoreline buffer.

Within water supply watersheds, a shoreline buffer shall be required for all development activities; a
minimum 50-foot vegetative buffer shall be required along all perennial or intermittent surface waters such
as intermittent streams, perennial streams, lakes and ponds, with 30 feet of the buffer remaining in a
natural undisturbed vegetative state along the perennial or intermittent surface waters. For SIBDA
projects (see section 32-359), a minimum 100-foot vegetative buffer shall be required along all perennial
surface waters. Any buffer required along all perennial and intermittent surface waters shall be
determined using the most recent version of a USGS 1:24,000 (7.5 minute) scale topographic map. The
following standards shall be followed:
(1) Desirable artificial stream bank or shoreline stabilization is permitted subject to approval by the
land development administrator.
(2) No new development shall be allowed within the buffer areas except for water dependent
structures, flagpoles, signs, lighting, and public projects such as road crossings and greenways
where no practical alternative exists. These activities should be designed to minimize built -upon
area, to direct run-off away from surface waters, and to maximize the utilization of stormwater
best management practices.
(3) These buffer areas may be considered part of the entire project acreage and may be included
in the density calculations and/or considered non -built -upon area for the purposes of this article.
(Ord. of 7-12-1999, § 05.232; Amend. of 2-1-2010, § 2)
Sec. 32-359. -Special intensity bonus.
(a) The county may allocate a special intensity bonus up to ten percent of the land in each WS-11-GW,
WS-III-GW and WS-IV-GW watershed area. Such bonus area may be developed as nonresidential
uses only. In the development receiving the special intensity bonus, the built -upon area is permitted
to be increased to 70 percent of the site. Applications for this special intensity bonus development
allocation (SIBDA) must be submitted and approved by the board of county commissioners to
develop under these built -upon provisions. An allocation in either the Upper or lower Falls
Watershed Overlay Zoning Districts may only be granted if the project will achieve 85 percent total
suspended solids removal and complies with all provisions of the Falls Watershed Stormwater
Ordinance for New Development (article V, division 5 of this chapter).
(b) To determine the total land area necessary to accommodate both the built -upon area and the
associated open space for a development project, the estimated project size (total current and future
impervious surfaces anticipated) should be multiplied by the following factors:
WS-11-CA acres (6% of site) x 16,667 = total site area
WS-II-GW acres (12% of site) x 8.333 =total site area
WS-III-GW (acres (24% of site) x 4.167 =total site area
acres (24% of site) x 4.167 =total site area
WS-IV-CA and WS-IV-GW
acres (36% of site) x 2.778 =total site area
Bonus development !acres 170% of site) x 1.428 =total site area

(c) No parcel shall be shaped in such a way that all the built -upon area is separated from the
landscaped area unless the landscaped area is between any perennial water body or intermittent
watercourse and the built -upon area.
(d) The special intensity bonus shall be granted only when the finding is made that the site plan
submitted proposes all best management practices for the retention of stormwater and the cleaning
of it prior to discharge to watercourses, and also all required landscaped or natural undisturbed
buffers are so arranged to provide the best buffer location for water bodies to protect water quality.
(Ord. of 7-12-1999, § 05I Ord. of 4-3-2000, § 3; Amend. of 6-4-20121Amend.. of 7=5-
20160) , § 1)
Sec. 32-360. -Public health.
All structures shall meet the following standards designed to eliminate threats to water quality and
the public health, safety and welfare:
(1) All uses relying on on -site sewer systems which utilize ground absorption shall meet county
standards.
(2) Sedimentation and erosion control measures shall be required.
(3) All development shall be required to provide for the management of stormwater runoff.
(Ord. of 7-12-1999, § 05.250)
Secs. 32-361-32-380. -Reserved.