SW6210601_Application Form_20211008

IV. PROJECT INFORMATION
1. In the space provided below, briefly summarize how the stormwater runoff will be treated.
Stormwater runoff will sheet flow across lots and collect into grassed swales to be conveyed off -site.
Stormwater pining to be installed only where necessary to convey stormwater beneath roadway or to be
m
2. a. If claiming vested rights, identify the supporting documents provided and the date they were approved:
❑ Approval of a Site Specific Development Plan or PUD Approval Date:
❑ Valid Building Permit Issued Date:
❑ Other: Date:
b.If claiming vested rights, identify the regulation(s) the project has been designed in accordance with:
❑ Coastal SW -1995 ❑ Ph 11- Post Construction
3. Stormwater runoff from this project drains to the Cape Fear River basin.
4. Total Property Area: 55.76 acres
5. Total Coastal Wetlands Area: 0 acres
6. Total Surface Water Area: 0.81 acres
7. Total Property Area (4) - Total Coastal Wetlands Area (5) - Total Surface Water Area (6) = Total Project
Area':54.95 acres
+ Total project area shall be calculated to exclude the following: the normal pool of impounded structures, the area
between the banks of streams and rivers, the area below the Normal Hi h Water (NHW) line or Mean High Water
(MHYQ line, and coastal wetlands landward from the NHW (or Normal
line. The resultant project area is used to
calculate overall percent built upon area (BUA). Non -coastal wetlands landward of the NHW (or MHM line may
be included in the total project area.
8. Project percent of impervious area: (Total Impervious Area / Total Project Area) X 100 = 24.0 %
9. How many drainage areas does the project have?1 (For high density, count I for each proposed engineered
stormwater BMP. For low density and other projects, use I for the whole property area)
10. Complete the following information for each drainage area identified in Project Information item 9. If there
are more than four drainage areas in the project, attach an additional sheet with the information for each area
provided in the same format as below.
Basin Information
Drainage Area 1
Drainage Area _
Drainage Area _
Drainage Area _
Receiving Stream Name
Rockfish Creek
Stream Class *
B
Stream Index Number *
18-31-(18)
Total Drainage Area (sf)
2,428,774
On -site Drainage Area (sf)
2,428,774
Off -site Drainage Area (sf)
0
Proposed Impervious Area** (sf)
574,452
% Impervious Area** (total)
23.7
Impervious— Surface Area
Drainage Area 1
Drainage Area _
Drainage Area _
Drainage Area _
On -site Buildings/Lots (sf)
371,223
On -site Streets (sf)
175,520
On -site Parking (sf)
On -site Sidewalks (sf)
27,709
Other on -site (sf)
Future (sf)
Off -site (sf)
Existing BUA*** (sf)
Total (sf):
1 574,452
* Stream Class and Index Number can be determined at: http.aortal.ncdenr.or web/wq&s/csu/classifications
Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas,
sidewalks, gravel areas, etc.
Form SWU-101 Version Oct. 31, 2013 Page 3 of 6