HomeMy WebLinkAboutSWA000153_Stormwater Narrative_20220711Kernodle Landing Phase 4 Project Narrative
A residential site -development is proposed within the County of Alamance off of Gerringer Mill
Rd. The proposed site layout is shown on the construction drawings prepared by Stoltzfus Engineering,
Inc. (SEI). The proposed major subdivision contains 29.161 acres of total area. The project is a 16-lot
residential subdivision. The project is owned and developed by Gerringer Mill Road, LLC.
The site will contain no more BUA than 24% of the project area and the lot density will be less
than 2 units per acre. As such, the site qualifies for low density standards of development as detailed in
the North Carolina Administrative Code. The site contains 29.161 Ac. of onsite drainage and 16.67 Ac of
off -site drainage. Runoff from the site will drain to Haw River primarily through a series of roadside
ditches. Storm water pipes have been added where necessary to facilitate drainage per NCDOT
requirements. The project site is not located in a designated water supply watershed.
Project Summary & Impervious Area Allocation:
Total Property Area: 29.161 Ac. (1,270,253 SF)
Total Surface Water Area: 0.092 Ac. (4,024 SF)
Total Project Area: 29.069 Ac. (1,266,229 SF)
Proposed On -site Building/Lots = 277,426 SF (Based on lot allocation, see chart)
Proposed On -site Streets/Gravel Road/Parking = 26,085 SF
Total New BUA = 303,511 SF
Toal Existing BUA = 1,598 SF
Total BUA % = 303,511 SF/(1,266,229-1,598 SF) = 24%
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Kernodle Landing, Phase 4
Alamance County
Impervious Area Lot Allocation
Lot #
Lot Area (AC)
% Total Area
Allowable
AllAllBuaLot (
99
1.08
4.58%
12,706
100
1.53
6.49%
18,001
101
1.31
5.56%
15,412
102
0.78
3.33%
9,232
103
0.86
3.65%
10,124
104
0.87
3.67%
10,187
105
1.25
5.30%
14,706
106
6.30
26.72%
74,120
107
0.92
3.89%
10,791
108
1.53
6.49%
18,001
109
0.99
4.21%
11,672
110
1.05
4.45%
12,353
111
1.48
6.28%
17,412
112
1.13
4.79%
13,295
113
1.13
4.79% 1
13,295
114
1.37
5.81% 1
16,118
Totals 23.58 100.00% 277,426
BUA = Built -Upon Area