SW6220101_Application Form_20230831

IV. PROJECT INFORMATION
1. In the space provided below,briefly summarize how the stormwater runoff will be treated.
Stormwater runoff from proposed lots is to be conveyed into the proposed streets via grassed swales.Runoff
in the streets will be collected into an underground storm drainage system via curb inlets which will
terminate at the proposed wet pond in the north east corner of the site.
2.a.If claiming vested rights,identify the supporting documents provided and the date they were approved:
n 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 II-Post Construction
3. Stormwater runoff from this project drains to the Cape Fear River basin.
4. Total Property Area:32.96 acres 5. Total Coastal Wetlands Area:0 acres
6. Total Surface Water Area:0 acres
7. Total Property Area(4) -Total Coastal Wetlands Area(5)-Total Surface Water Area(6) =Total Project
Area+:32.96 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(NHVV)line or Mean High Water
(MHVV)line,and coastal wetlands landward from the NI-W(or MHVV)line. The resultant project area is used to
calculate overall percent built upon area (BUA). Non-coastal wetlands landward of the NHW(or MHVV)line may
be included in the total project area.
8. Project percent of impervious area: (Total Impervious Area/ Total Project Area)X 100 =28.8
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 North Prong North Prong
Anderson Anderson
Creek Creek
Stream Class * C C
Stream Index Number* 18-23-32-1 18-23-32-1
Total Drainage Area(sf) 829,144 622,719
On-site Drainage Area(sf) 813,181 622,719
Off-site Drainage Area(sf) 15,963 0
Proposed Impervious Area**(sf) 388,943 40,000
% Impervious Area**(total) 46.9 6.4
Impervious**Surface Area Drainage Area 1 Drainage Area 2 Drainage Area_ Drainage Area
On-site Buildings/Lots(sf) 228,000 40,000
On-site Streets (sf) 107,814 0
On-site Parking (sf) 0 0
On-site Sidewalks (sf) 15,984 0
Other on-site (sf) 21,182 0
Future(sf) 0 0
Off-site (sf) 15,963 0
Existing BUA***(sf) 0 0 _
Total (sf): 388,943 40,000
* 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