SW3220306_Application Form_20230612

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IV. PROJECT INFORMATION
1. In the space provided below, briefly summarize how the stormwater runoff will be treated.
The proposed storm water collection system will consist of multiple wet ponds within the project boundaries.
The storm system was designed to detain the 10 and 25 year storm events.Proposed water quality/detention
requirements are being met according to the NCDEQ Requirements.

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 Ï 1995 Ph II Ï Post Construction
3. Stormwater runoff from this project drains to the Catawba River basin.
4. Total Property Area: 105.50 acres 5. Total Coastal Wetlands Area: acres
6. Total Surface Water Area: 3.85 acres
7. Total Property Area (4) Ï Total Coastal Wetlands Area (5) Ï Total Surface Water Area (6) = Total Project
+
Area: 101.65 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 = 66.0 %
9. How many drainage areas does the project have?6 (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 3 Drainage Area 4
Receiving Stream Name Rone Branch Rone Branch Rone Branch Rone Branch
Stream Class * C C C C
Stream Index Number * 11-138-4 11-138-4 11-138-4 11-138-4
Total Drainage Area (sf) 491,598 102,729 1,118,122 589,739
On-site Drainage Area (sf) 491,598 76,346 978,294 584,105
Off-site Drainage Area (sf) N/A 26,383 139,828 5,634
**289,769 38,994 582,295 394,736
Proposed Impervious Area (sf)
** 59.0 64.0 65.0 68.0
% Impervious Area(total)

**
Impervious Surface Area Drainage Area 1 Drainage Area 2 Drainage Area 3 Drainage Area 4
On-site Buildings/Lots (sf) 229,081 35,011 430,861 296,993
On-site Streets (sf) 39,716 2,422 105,342 67,032
On-site Parking (sf) N/A N/A N/A N/A
On-site Sidewalks (sf) 15,293 969 37,445 24,461
Other on-site (sf) 5,679 592 8,647 6,250
Future (sf) N/A N/A N/A N/A
Off-site (sf) 0 26,383 139,828 5,634
Existing BUA*** (sf) 0 0 0 0
Total (sf): 289,769 65,377 722,123 400,370
* Stream Class and Index Number can be determined at: http://portal.ncdenr.org/web/wq/ps/csu/classifications