SW6200904_Revised Permit Application Page 3_20220823

IV. PROJECT INFORMATION
1. In the space provided below, briefly summarize how the stormwater runoff will be treated.
Stormwater runoff from the developed areas of the site will be captured and treated in a stormwater
vegetative swales to infiltration trenches.
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 II - Post Construction
3. Stormwater runoff from this project drains to the Lumber & Cape Fear River basin.
4. Total Property Area: 520.306 acres
Total Coastal Wetlands Area: 0 acres
Total Surface Water Area: 0 acres
7. Total Property Area (4) - Total Coastal Wetlands Area (5) - Total Surface Water Area (6) = Total Project
Area':520.306 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 (NHM line or Mean High Water
(MHM line, and coastal wetlands landward from the NHW (or MHIO line. The resultant project area is used to
calculate overall percent built upon area (B UA). 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 = 4.46
9. How many drainage areas does the project have?8 (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
Mill Creek
Mill Creek
Mill Creek
Mill Creek
Stream Class *
C
C
C
C
Stream Index Number *
18-31-11
18-31-11
18-31-11
18-31-11
Total Drainage Area (sf)
212,925
80,165
111,705
185,040
On -site Drainage Area (sf)
212,925
80,165
111,705
185,040
Off -site Drainage Area (sf)
Proposed Impervious Area** (sf)
113,469
48,933
81,750
117,141
Impervious Area** (total)
53.3
61.0
73.2
63.3
Impervious- Surface Area
Drainage Area 1
Drainage Area 2
Drainage Area 3
Drainage Area 4
On -site Buildings/Lots (sf)
84,000
36,000
72,000
96,000
On -site Streets (sf)
24,767
11,589
9,750
15,796
On -site Parking (sf)
On -site Sidewalks (sf)
4,702
1,344
Other on -site (sf)
5,345
Future (sf)
Off -site (sf)
Existing BUA*** (sf)
Total (sf):
1 113,469
1 48,933
1 81,750
117,141
* Stream Class and Index Number can be determined at: http.i&ortal.ncdenr.or web/wg&s/csu/classi{ications
Im ervious 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 06Aug2012 Page 3 of 6

IV. PROJECT INFORMATION
1. In the space provided below, briefly summarize how the stormwater runoff will be treated.
Stormwater runoff from the developed areas of the site will be captured and treated in a stormwater
vegetative swales to infiltration trenches.
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 II - Post Construction
3. Stormwater runoff from this project drains to the Lumber & Cape Fear River basin.
4. Total Property Area: 520.306 acres
Total Coastal Wetlands Area: 0 acres
Total Surface Water Area: 0 acres
7. Total Property Area (4) - Total Coastal Wetlands Area (5) - Total Surface Water Area (6) = Total Project
Area':520.306 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 (NHM line or Mean High Water
(MHM line, and coastal wetlands landward from the NHW (or MHIO line. The resultant project area is used to
calculate overall percent built upon area (B UA). 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 = 4.46
9. How many drainage areas does the project have?8 (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 5
Drainage Area 6
Drainage Area 7
Drainage Area 8
Receiving Stream Name
Buffalo Creek
Mill Creek
Buffalo Creek
Buffalo Creek
Stream Class *
C
C
C
C
Stream Index Number *
14-2.5
18-31-11
14-2.5
14-2.5
Total Drainage Area (sf)
96,006
113,711
182,260
201,552
On -site Drainage Area (sf)
96,006
113,711
182,260
201,552
Off -site Drainage Area (sf)
Proposed Impervious Area** (sf)
81,698
24,000
134,033
167,080
Impervious Area** (total)
85.1
21.1
73.5
82.9
Impervious- Surface Area
Drainage Area 5
Drainage Area 6
Drainage Area 7
Drainage Area 8
On -site Buildings/Lots (sf)
72,000
24,000
120,000
150,000
On -site Streets (sf)
9,698
14,033
17,080
On -site Parking (sf)
On -site Sidewalks (sf)
Other on -site (sf)
Future (sf)
Off -site (sf)
Existing BUA*** (sf)
Total (sf):
1 81,698
1 24,000
1 134,033
1 167,080
* Stream Class and Index Number can be determined at: http.i&ortal.ncdenr.or web/wg&s/csu/classi{ications
Im ervious 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 06Aug2012 Page 3 of 6