SW6220806_Stormwater Narrative_20221128

McMillan Manor Subdivision Storm Water Narrative
The subject site is currently undeveloped. The proposed development of this site
includes single family residential lots. Stormwater is to be collected into the proposed
roadway ditching and conveyed off site.
The site meets the qualifications of a low density development. The average density for
the development is 0.96 units/acre compared to the maximum of 2 units/acre to satisfy
the requirements set forth by NCDEQ. Stormwater will sheet drain across lots and
collect into roadway ditching along all proposed streets. Stormwater will be discharged
from proposed roadway ditching into existing wetlands via grassed swales. Grassed
swales are designed to meet the standards for Low Density Projects in the most current
NCDEQ Stormwater Design Manual. Culvert pipes will be installed where necessary to
convey stormwater across proposed roadways. The roads in the subdivision are
designed in accordance with NCDOT standards.
Based on our study and review of the NCDEQ BMP manual and NC Session Law 2006-
246 Section 9 paragraph c, McMillan Manor Subdivision meets and/or exceeds the
requirements and intent for low density development.
409 Chicago Drive, Suite 112, rayettevi I le. NC 28306
office 1 910-426-6777 fax [phone]
On time, every time. I www.4Dsitesolut!ons.com