SW6220906_Stormwater Narrative_20220930

5245 Red Hill Church Rd
FLEET TEM PLE Coats, NC 27521
ENGINEERING 910.658.2446
[e-mail]
PLLC Firm License P-2357
Jones Creek Meadows
Upper Little Piver Township, Harnett County
07.02.2022
PROJECT NARRATIVE
Project & Site Description
The purpose of this project is to develop a 24.8 acre residential subdivision. The
property is existing farmland and woodland. Existing topography drains to the east
and west at slopes of approximately 2% - 7% to Jones Creek (West) and to an un-
named tributary Walkers Creek (East). No wetlands are present on the Site. The Site is
limited to maximum 24% impervious area upon build -out (Low Density
Development).
Adjacent Property
The land uses in the surrounding areas are residential and agricultural.
Soils
The soils in this project consist of Bb (Bibb loam, frequently flooded), DoA (Dothan
loamy sand, 0 to 2% slopes), DoB (Dothan loamy sand, 2 to 6% slopes), FaB (Fuquay
loamy sand, 0 to 6% slopes), and GoA (Goldsboro loamy sand, 0 to 2% slopes).
Bb is categorized as poorly drained, moderately permeable, and is poorly suited to
most urban and recreational uses. DoA is categorized as well drained, moderately
permeable, and is moderately suited to most urban and recreational uses. DoB is
categorized aswell drained, moderately permeable, and is moderately suited to most
urban and recreational uses. FaB is categorized as well drained, moderately
permeable, and is moderately suited to most urban and recreational uses. GoA is
categorized as moderatelywell drained, moderatelyto moderately slowly permeable,
and is moderately suited to most urban and recreational uses.
Planned Stormwater Manaaement. Erosion and Sediment Control
As shown on the Erosion Control Plan the project will be controlled and stabilized with
diversion berms, silt fence, rock check dams, and temporary skimmer basins with
baffles. Diversion berms will be constructed from topsoil graded from the site and will
be backed with silt fence where needed. All measures will be constructed and
maintained to NCDEQ & Harnett Countystandards and requirements.
After erosion control measures are removed. Surface waters from the roadway areas
will drain via grassed roadside ditches to owner maintained grassy swales which will
convey the runoff from the property. Impervious areas on some portions of the lots
will surface drain through the grassed yard areas over the natural contours of the Site.
Project impervious percentage is limited to 24%. Proposed impervious limits as
fo I I ows:

IMPERVIOUS AREA CALCULATIONS:
TRACT AREA: 1,079,717 SF
IMPERVIOUS AREAALLOWED: 24% MAX (LOW DENSITY)
1,079,717 SF X 0.24=259,132 SF MAXIMUM ALLOWABLE IMPERVIOUS
IMPERVIOUS AREA BY DESIGN
34,SO6 SF ASPHALT
218,SOO SF(99,SOOSF/LOT X 23 LOTS
253,006 SF TOTAL IMPERVIOUS BY DESIGN (23.4%)