SW6230101_Supplement-EZ Form_20230414

SUPPLEMENT-EZ COVER PAGE
FORMS LOADED
PROJECT INFORMATION
1
Project Name
Project Area ac
Coastal Wetland Area (ac)
KingsburyKingabury Ridge
2
144.04
3
0
4
Surface Water Area (ac)
0
5
Is this ro ect Hi gh or Low Density?
Low
6
Does this project use an off -site SCM?
No
COMPLIANCE WITH 02H .1003[4)
7
Width of vegetated setbacks provided feet
30
8
Will the vegetated setback remain vegetated?
Yes
9
If BUA is proposed in the setback, does it meet NCAC 02H.1003 4 c-d)?
N/A
10
Is streambank stabilization proposed on this project?
No
NUMBER AND TYPE OF SCMs:
11 Infiltration System
12
jBioretention Cell
13
JWet Pond
14
Stormwater Wetland
15
Permeable Pavement
16
Sand Filter
17
Rainwater Harvesting (RWH)
18
Green Roof
19
Level spreader -Filter Strip LS-F5
20
Disconnected Impervious Surface (DIS
21
Treatment Swale
22
Drylpond
23
StormFilter
24
Silva Cell
25
Bayflter
26
Filterra
FORMS LOADED
DESIGNER CERTIFICATION
27 Name and Title:
28 Organization
29 Street address:
30 City, State, Zip:
31 Phone number(s):
32 Email:
Jeff Nobles, PE
Larry Kin & Associates, R.L.S., P.A.
1333 Morganton Road - Suite #201
Fayetteville, NC 28305
910-483-4300
innhip-ONkanria rnm
Certification Statement:
certify, under penalty of law that this Supplement-EZ form and all supporting information were prepared under my direction or supervision; that the
information provided in the form is, to the best of my knowledge and belief, true, accurate, and complete; and that the engineering plans,
specifications, operation and maintenance agreements and other supporting information are consistent with the information provided here.
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DRAINAGE AREAS
1
Is this a high density project?
No
2
If so, number of drainage areas/SCMs
0
3
Does this project have low density areas?
Yes
4
If so, number of low density drainage areas
1
5
Is all/part of this project subject to previous rule
versions?
No
FORMS LOADED
DRAINAGE AREA INFORMATION
Entire Site
LD 1
4
Type of SCM
N/A
N/A
5
Total drainage area (sq ft)
6274275
6274275
6
Onsite drainage area (sq ft)
6274275
6274275
7
Offsite drainage area (sq ft)
0
0
8
Total BUA in project (sq ft)
860181 sf
860181 sf
9
New BUA on subdivided lots (subject to permitting)
(sq ft)
704000 sf
704000 sf
10
New BUA not on subdivided lots (subject to
permitting) (so
156181 sf
156181 sf
11
Offsite BUA (sq ft)
none
none
12
Breakdown of new BUA not on subdivided lots:
Parking (sq ft)
Sidewalk (sq ft)
Roof (sq ft)
Roadway (sq ft)
155801 sf
155801 sf
Future (sq ft)
Other, please specify in the comment box
below (sq ft)
380 sf
380 sf
13
New infiltrating permeable pavement on
subdivided lots (sq ft)
N/A
N/A
14
New infiltrating permeable pavement not on
subdivided lots (sq ft)
N/A
N/A
15
Existing BUA that will remain (not subject to
permitting) (sq ft)
N/A
N/A
16
Existing BUA that is already permitted (sq ft)
N/A
N/A
17
Existing BUA that will be removed (sq ft)
N/A
N/A
18
Percent BUA
14%
14%
19
Design storm (inches)
1.0 in
1.0 in
20
Design volume of SCM (cu ft)
N/A
N/A
21
Calculation method for design volume
N/A
N/A
DDITIONAL INFORMATION
22
Please use this space to provide any additional information about the
drainage area(s):
The 380 S.F. in the "other" column is forthe mail kiosk's concrete area.

LOW DENSITY
DESIGN REQUIREMENTS FOR LOW DENSITY PROJECTS FROM 02H .100
1 Is project below density thresholds set forth in the applicable stormwater rule?
Yes
2
Does project maximize dispersed flow and minimize channelization of flow?
Yes
3
Has the use of piping been minimized per .1003(2)(c)?
Yes
4
Side slopes of the vegetated conveyances (H:V)
3 to 1
5
Maximum velocity in the vegetated conveyances during the 10-year storm?
4.44
6
Are curb outlet swales proposed?
No
7
Maximum longitudinal slope of curb outlet swale(s) (%)
N/A
8
Bottom width of curb outlet swale(s) (feet)
N/A
9
Maximum side slope of curb outlet swale(s) (H:V)
N/A
10
Minimum length of curb outlet swale(s) (feet)
N/A
11
Are treatment swales used instead of curb outlet swales?
Yes
12
Is stormwater released at the edge of the setback as dispersed flow?
Yes
13
Have stormwater outlets been designed to prevent downslope erosion?
Yes
14
Are variations to rule .1003 proposed?
No
ADDITIONAL INFORMATION
15
1 Please use this space to provide any additional information about this low density project:
SEE THE ATTACHED SHEET FOR ALL SWALES' INFORMATION

Swale#
Drainage
Area (ac)
8UA ( ac)
pervious
area (ac)
C
Q O
Slope (%)
Vanow (fps)
Vactuai
(fps)
flow
Depth (ft)
1
9.34
2.22
7.12
0.40
19.24
7.00
4.50
4.01
0.86
2
7.89
1.76
6.13
0.39
17.48
9.00
4.50
4.28
0.77
3
2.00
0.52
1.48
0.42
4.77
8.25
4.50
2.84
0.40
4
8.91
2.24
6.67
0.41
20.06
7.00
4.50
4.11
0.87
5
3.84
0.96
2.88
0.41
9.98
7.00
4.50
3.39
0.61
6
8.25
2.12
6.13
0.42
21.06
7.75
4.50
4.31
0.87
7
9.94
2.05
7.89
0.38
22.66
5.75
4.50
3.95
0.97
8
10.78
2.41
8.37
0.40
27.62
4.10
5.00
3.67
1.16
9
1.02
0.63
0.39
0.50
2.74
1.25
5.00
2.04
0.62
20
1.80
1.28
0.52
0.44
4.26
1.25
5.00
2.28
0.73
11
4.40
3.75
0.65
0.35
6.70
0.75
5.00
2.12
0.95
12
0.98
0.69
0.29
0.44
2.55
0.75
5.00
1.67
0.66
13
1.15
0.78
6.37
0.46
19.24
4.50
5.00
4.08
0.85
14
4.06
3.42
0.64
0.35
9.73
0.75
5.00
2.34
1.09
15
0.80
0.54
0.26
0.46
2.16
2.52
5.00
2.47
0.50
16
0.93
0.68
0.25
0.43
2.29
2.52
5.00
2.52
0.51
17
1.62
1.20
0.42
0.42
5.89
0.30
5.00
1.47
1.07
18
0.48
0.29
0.19
0.51
11.58
0.30
5.00
1.74
1.38
19
1.31
1.00
0.31
0.40
2.89
1.25
5.00
2.08
0.63
20
0.69
0.48
0.21
0.45
1.88
1.25
5.00
1.84
0.54
21
0.68
0.49
0.19
0.43
1.79
4.00
5.00
2.90
0.42
22
0.14
0.09
0.05
0.48
0.52
4.00
5.00
2.04
0.27
23
2.77
2.13
0.64
0.40
7.46
2.25
5.00
3.33
0.80
23A
2.24
0.60
1.64
0.38
4.81
6.50
4.50
4.11
0.30
24
0.16
0.07
0.09
0.63
1.27
2.25
5.00
2.06
0.42
25
1.35
1.05
0.29
0.39
8.99
2.95
5.00
3.82
0.82
26
0.19
0.13
0.06
0.47
2.34
2.95
5.00
2.67
0.50
27
3.06
2.33
0.73
0.41
6.20
0.50
5.00
1.81
0.99
28
0.56
0.38
0.18
0.46
1.67
0.50
5.00
1.28
0.61
29
0.77
0.57
0.19
0.41
1.93
1.75
5.00
2.12
0.51
30
0.68
0.49
0.19
0.44
1.83
1.75
5.00
2.09
0.50
31
0.78
0.56
0.22
0.43
2.16
0.50
5.00
1.37
0.67
32
0.64
0.46
0.17
0.43
1.69
0.50
5.00
1.30
0.61
33
0.61
0.46
0.15
0.41
1.53
0.50
5.00
1.26
0.59
34
0.17
0.11
0.06
0.49
0.61
0.50
5.00
0.99
0.42
35
0.70
0.55
0.15
0.39
3.08
4.00
5.00
3.25
0.52
36
0.59
0.44
0.15
0.42
2.25
4.00
5.00
3.04
0.46
37
2.27
1.75
0.52
0.40
8.35
1.48
5.00
2.95
0.90
38
0.87
0.58
0.29
0.47
4.71
1.48
5.00
2.53
0.73
39
0.11
0.07
0.04
0.47
1.97
2.17
5.00
2.34
0.49
40
0.35
0.26
0.08
0.41
5.86
2.17
5.00
3.06
0.74
41
0.26
0.17
0.09
0.47
158
0.50
5.00
1.25
0.60
42
1.41
1.05
0.36
0.42
4.81
0.50
5.00
1.70
0.90
43
0.20
0.13
0.06
0.46
0.68
1.75
5.00
1.59
0.35
44
0.62
0.47
0.15
0.41
1.64
1.75
5.00
2.03 1
0.48
45
0.26
0.14
0.12
0.54
0.93
3.75
5.00
2.30
0.34
46
0.30
0.19
0.12
0.50
0.96
3.75
5.00
2.37
0.34
47
2.47
2.03
0.44
0.37
6.22
3.75
5.00
3.84
0.68
48
1.74
1.33
0.41
0.40
5.36
5.25
4.50
4.12
0.61
49
0.36
0.20
0.15
0.53
1.23
5.25
4.50
2.87
0.35
50
0.12
0.06
0.06
0.58
0.54
5.25
4.50
2.28
0.26
51
0.12
0.08
0.04
0.47
0.95
5.25
4.50
2.65
0.32
52
0.07
0.05
0.02
0.47
0.25
3.75
5.00
1.62
0.21
53
0.09
0.06
0.03
0.47
0.56
3.75
5.00
2.04
0.28
54
0.26
0.15
0.11
0.52
1.95
3.50
5.00
2.75
0.45
55
0.31
0.18
0.13
0.52
1.20
2.50
5.00
2.14
6.40
56
1.16
0.97
0.18
0.35
15.66
1.00
5.00
3.00 1
0.91
57
3.31
2.76
0.55
0.36
22.18
0.25
5.00
1.97
1.50
58
0.20
0.15
0.05
0.40
22.66
5.75
4.50
3.95
0.97
59
0.70
0.52
0.18
0.42
4.95
2.34
5.00
2.85
0.41
60
0.09
0.09
0.00
0.25
21.06
0.30
5.00
2.07
1.41
61
0.23
0.19
0.05
0.38
8.26
0.50
5.00
1.95
0.79
62
0.75
0.61
0.14
0.37
9.98
4.35
5.00
4.44
0.50
63
0.77
0.56
0.21
0.43
2.13
3.75
5.00
2.88
0.46
64
0.25
0.19
0.06
0.41
0.70
3.75
5.00
2.22
0.30