SW6211101_Stormwater Narrative_20211130

KEN BRIGHT ASSOCIATES, PLLC
MASON RIDGE SUBDIVISION - NARRATIVE
River Basin: Cape Fear
Stream Index: 18-23-29-1
Stream Name: McLeod Creek
Classification: C
Watershed: NA
Total Project Area: 35 Ac
BUA = 23.86 % Low Density Project
Wetlands: There are wetlands on site that will not be disturbed.
Site Existing Conditions: The site has a single-family home and wooded areas. There is a pond
on site.
This is a Phase 2 project. Since this is a low -density project, the stormwater will be treated with
dispersed flow and vegetated swales along the roads.
Two dry ponds have been designed for volume control to reduce flow to downstream storm
drainage.
The proposed roads will have 20' asphalt and ditches with a 4:1 side slope. This project
proposed grading the road only. The soil mostly loamy sands as indicated in sheet C13. The
wetlands on site that are not going to be impacted by this project.
Each lot will be served with a private onsite sewer system. Attached is the soils report
prepared by the soil scientist.
Pipes under lot driveways will be installed only if needed when the lots are developed. There
are 4 culverts proposed crossing the roads.
All swales will have Bermuda Grass or equal and the velocities are less than 4 fps.
P.0 Box 553 Phone: [phone]
2305 Carthage Street
Sanford, NC 27330 e-mail: [e-mail]