SW6230807_Application Form_20231205

IV. PROJECT INFORMATION
1. In the space provided below,briefly summarize how the stormwater runoff will be treated.
For the proposed project we have designed and provided a detention pond.The pond was sized to handle
up to the 1% chance storm(100-yr)in accordance with the NCDEQ Drainage Manual
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:
n Valid Building Permit Issued Date:
n 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:9.55 acres 5. Total Coastal Wetlands Area:0.00 acres
6. Total Surface Water Area:0.00 acres
7. Total Property Area(4)-Total Coastal Wetlands Area(5)-Total Surface Water Area(6) =Total Project
Area':9.55 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(NHIN)line or Mean High Water
(MHVV)line, and coastal wetlands landward from the NI-W(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 =61.63
9. How many drainage areas does the project have?1 (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_ Drainage Area_ Drainage Area
Receiving Stream Name Mingo Swamp
Stream Class * C;SW
Stream Index Number* 18-68-12-2
Total Drainage Area(sf) 419,623
On-site Drainage Area(sf) 416,247
Off-site Drainage Area(sf) 34,412
Proposed Impervious Area**(sf) 278,342
% Impervious Area**(total) 66.63
Impervious**Surface Area Drainage Area 1 Drainage Area_ Drainage Area Drainage Area
On-site Buildings/Lots(sf) 24,569
On-site Streets (sf) 0.00
On-site Parking (sf) 221,231
On-site Sidewalks (sf) 6,841
Other on-site (sf) 20,801
Future(sf) 0.00
Off-site (sf) 4,500
Existing BUA***(sf) 227,813
Total (sf): 277,595
* Stream Class and Index Number can be determined at: http//portal.ncdenr_org/web/wq/ps/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