SW6221005_Supplement-EZ Form_20221028

SUPPLEMENT-EZ COVER PAGE
FORMS LOADEE
PROJECT INFORMATION
1 Project Name
2 Project Area ac
3 Coastal Wetland Area ac —
4 Surface Water Area ac
5 Is this project High or Low Density? _
6 Does this project use an off -site SCM?
River Run-- Phase 1
29,64
No
COMPLIANCE WITH 02H .1 4
7
Width of vegetated setbacks provided feet
30
8
Will the vegetated setback remain vegetated?
Yes
9
If BLIA is proposed in the setback, does it meet NCAC 02H.1003 4 c-d ?
NIA
10
Is streambank stabilization proposed on this project?
Yes
NUMBER AND TYPE OF SCMs:
11 Infiltration System 0
12
Bioretention Cell
0
13
Wet Pond
0
14
Stormwater Wetland
0
15
Permeable Pavement
0
16
Sand Filter
0
17
1 Rainwater Harvesting RWH
0
18
Green Roof
0
19
Level Spreader -Filter Strip LS-F5
0
20
Disconnected Impervious Surface (DIS)
0
21
Treatment Swale
0
22
Dry Pond
0
23
18torynFittef
0
24
Silva Cell
_
0
25
Bayfitter
0
26
Filterra
0
FORMS LOADED
DESIGNER CERTIFICATION
27
'Name and Title:
Organization:
Street address:
City, State, Zip:
Phone number{s : _
Email:
Jeffrey A. Nobles, PE
Larry King & Assoc., RLS, PA
1333 Morganton Road, Suite 201
Fayetteville, NC 28305
910-483-4300
_ [e-mail]
28
29
30
31
32
Certification Statement:
I 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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Date
16- Z0-2Z

DRAINAGE AREAS
1
Is this a hi h 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
4 1 Type of SCM
5 ITotal drainage area ft 1291163
LO 1
1291163
6
Onsite drainage area (sq ft
129163
1291163
7
Offsite drainage area (sq ft
8
Total BUA in project (sq ft
227190 sf
227190 sf
9
New BUA on subdivided lots (subject to permitting)
(sq ft
165000 sf
165000 sf
10permitting)
New BUA not on subdivided lots (subject to
s
11
Offsite BUA (sq ft
12
Breakdown of new BUA not on subdivided lots:
Parking (sq ft
Sidewalk (sq ft
Roof (sq ft
Roadwa sq ft
62190 sf
62190 sf
- Future (sq ft
Other, please specify in the comment box
below (sq ft
sf
sf
13
New infiltrating permeable pavement on
subdivided lots ft
sf
sf
14
New infiltrating permeable pavement not on
subdivided lots (sq ft
sf
sf
15permitting)
Existing BUA that will remain (not subject to
s ft
sf
sf
16
Existinq BUA that is already permitted tt
sf
sf
17
Existing BUA that will be removed (sq ft
sf
sf
18
Percent BUA
0%
0%
19
❑esign storm inches
.0 in
.0 in
20 . design volume of SCM cu ft cf
21 Calculation method for design volume cf
ADDITIONAL INFORMATION
Please use this space to provide any additional information about the
22 drainage area(s):
cf
0

LOW DENSITY
ESIGN
1
L0W OFNS1TY PROJECTS FRDM 0 2 H .1003
Ils 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)(0)?
Yes
4
Side slopes of the vegetated conveyances (H;V)
3 sf
5
Maximum velocity in the vegetated conveyances during the 10-year storm?
5
6
Are curb outlet swales proposed?
No
7
Maximum longitudinal slope of curb outlet swale(s) (%)
8
Bottom width of curb outlet swale(s) (feet)
9
Maximum side slope of curb outlet swale(s) (H:V)
10
Minimum length of curb outlet swale(s) (feet)
No
Yes
11
Are treatment swales used instead of curb outlet swales?
12
Is stormwater released at the edge of the setback as dispersed flow?
13
Have stormwater outlets been designed to prevent downslop_e erosion?
Yes
No
14
Are variations to rule .1003 proposed?
ADDITIONAL INFORMATION
15 ; Please use this space to provide any additional information about this low density project:
Swale
#
Drainage
Area
BUA
(ac)
Pervious
area
C
q
(cfs)
Slope
M
V.11..
(fps)
V,..„
(fps)
Flow depth
(it)
1
1.43
0.37
1.06
0.45
4.94
2.00
6.00
3.47
0.75
2
0.10
0.05
0.05
0.45
0.35
2.00
6.00
1.79
0.28
3
2.97
0.68
2.29
0.45
10.24
2.00
6.00
4.16
0.99
4
1.52
0.38
1.14
0.45
5.25
2.00
6.00
3.52
0.77
5
1.10
0.27
0.83
0.45
3.69
0.60
6.00
2.05
0.85
6
0.20
0.08
0.12
0.45
0.69
0.60
6.00
1.35
0.45
7
2.05
0.46
1.59
0.46
7.09
3.75
6.00
4.81
0.77
8
0.07
0.03
0.04
0.45
0.24
5.75
6.00
2.06
0.22
9
0.08
0.04
0.04
0.45
0.28
3.75
6.00
2.14
0.23
10
1.16
0.30
0.86
0.45
4.01
3.75
6.00
4.17
0.62
11
0.35
0.10
0.25
0.45
1.21
0.60
6.00
1.55
0.56
12
0.40
0.10
0.30
0.45
1.38
0.60
6.00
1.61
0.58
13
2.08
0.39
1.69
0.45
7.19
5.12
6.00
5.42
0.73
14
0.60
0.09
0.51
0.45
2.07
5.12
6.00
3.97
0.46
16
2.01
0.45
1.56
0.45
6.95
2.00
6.00
0.38
0.86
16
2.25
0.10
2.15
0.45
6.74
2.00
6.00
3.75
0.85
17
1.88
0.16
1.72
0.45
5.83
0.60
6.00
2.30
1.00
18
0.14
0.06
0.08
0.45
0.48
0.60
6.00
1.23
0.39
19
1.19
0.26
0.93
0.45
4.11
1.86
6.00
3.23
0.71
20
0.47
0.15
0.32
0.45
1.62
1.86
6.00
2.56
0.50
21
7.71
2.16
5.54
0.45
24.26
0.69
6.00
3.13
1.11
22
7.39
1.89
5.50
0.45
22.65
3.00
6.00
5.04
0.61
23
3.63
0.86
2.77
0.44
12.27
0.75
6.00
2.91
1.03
24
26
26
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30