SW5200602_Application_20201106

IV. PROJECT INFORMATION
1. In the space provided below, briefly summarize how the stormwater runoff will be treated.
The proposed scope of the project includes expansion of existing building and work yard within the existing
developed commercial site. Approx. 4.0 ac of added impervious area will be treated for water quality by two
surface sand filters and level spreader filter strips.

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:
3. Stormwater runoff from this project drains to the Tar-Pamlico River basin.
4. Total Property Area: 30.0 acres 5. Total Coastal Wetlands Area: 0 acres
6. Total Surface Water Area: 0 acres
+
Area: 30.0 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 High Water (NHW) line or Mean High Water
(MHW) line, and coastal wetlands landward from the NHW (or MHW) line. The resultant project area is used to
calculate overall percent built upon area (BUA). Non-coastal wetlands landward of the NHW (or MHW) line may
be included in the total project area.
8. Project percent of impervious area: (Total Impervious Area / Total Project Area) X 100 = 55.5 %
9. How many drainage areas does the project have?2 (For high density, count 1 for each proposed engineered
stormwater BMP. For low density and other projects, use 1 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 2 Drainage Area Drainage Area
Receiving Stream Name Brandy Creek Brandy Creek
Stream Class * B;NSW B;NSW
Stream Index Number * 28-29-3-(1) 28-29-3-(1)
Total Drainage Area (sf) 256254 93066
On-site Drainage Area (sf) 256254 82104
Off-site Drainage Area (sf) 10962
**144687 49349
Proposed Impervious Area (sf)
** 56.5 53.0
% Impervious Area(total)

**
Impervious Surface Area Drainage Area 1 Drainage Area 2 Drainage Area Drainage Area
On-site Buildings/Lots (sf) 2163 7341
On-site Streets (sf) 0
On-site Parking (sf)
On-site Sidewalks (sf) 1448 33417
Other on-site (sf) 102885
Future (sf)
Off-site (sf) 8591
Existing BUA*** (sf) 38191
Total (sf): 144687 49349
* Stream Class and Index Number can be determined at: http://portal.ncdenr.org/web/wq/ps/csu/classifications
Form SWU-101 Version Oct. 31, 2013 Page 3 of 6