SW6210502_Supplement-EZ Form_20210916

SUPPLEMENT-EZ COVER PAGE
FORMS LOADED
PROJECT INFORMATION
1
Project Name
James Farm Phase 2
2
Project Area ac
12.46
3
Coastal Wetland Area ac
0.064
4
Surface Water Area ac
5
Is this m'ect High or Low Density?
Low
6
1 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 BLIA 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 SCIYMs:
11
Infiltration System
12
Bioretention Cell
13
Wet Pond
14
Stormwater Wetland
15
Permeable Pavement
16
Sand Filter
17
Rainwater Harvesting (RWH)
18
Green Roof
19
Level Spreader -Filter Strip LS-FS
20
Disconnected Impervious Surface DIS
21
Treatment Swale
22
Dry Pond
23
StormFilter
24
Silva Cell
25
Bayfilter
26
Filterra
FORMS LOADED
DESIGNER CERTIFICATION
27
Name and Title:
Jeffrey A. Noblest PE
Larry King & Associates RLS, PA
1333 Morganton Road Suite 201
28
Organization:
29
Street address:
City, State, Zip:
30
Fayetteville, NC 28305
31
Phone number �:
Email:
910-483-4300
32
[e-mail]
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
a
SEAL
31459 =
0'b %%
%%%
Sign e f ign
Seal
Date

DRAINAGE AREAS
1
Is this a hi h densi ra ect?
No
2
If so, number of drainage areas/SCMs
0
3
Does this project have low densq 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
4 RT a of SCM
Entire Site
LD 1
n/a
n/a
5
Total drainage area (sq ft
542,261
542621
6
Onsite drainage area (sq ft
7
Offsite drainage areas ft
8
Total BUA in project (sq ft
58309 sf
58309 sf
9(sq
New BUA on subdivided lots (subject to permitting)
ft
40500 sf
40500 sf
10permitting)
New BUA not on subdivided lots (subject to
s
17809 sf
17809 sf
11
Offsite BU(sq ft
159543 sf
sf
12
Breakdown of new BUA not on subdivided lots:
Parking (sq ft
sf
sf
Sidewalk (sq ft
sf
sf
sf
sf
Roof (sq ft
Roadwa s ft)
Future (sq ft
Other, please specify in the comment box
below (sq ft
New infiltrating permeable pavement on
subdivided lots (sq ft
17809 sf
_
17809 sf
sf
sf
sf
sf
13
sf
sf
14
New infiltrating permeable pavement not on
subdivided lots (sq ft
sf
sf
15 1
Existing BUA that will remain (not subject to
permitting)s ft
sf
sf
16 1
Existing BUA that is already permitted (sq ft
159543 sf
sf
17
Existing BUA that will be removed (sq ft
sf
sf
18
Percent BUA
11 %
11 %
19
Desi n storm inches
1.0 in
1.0 in
20
Desi n volume of SCM cu ft
of
cf
21
Calculation method for design volume
n/a
nla
ADDITIONAL INFORMATION
Please use this space to provide any additional information about the
22 1drainage area(s):

LOW DENSITY
DIESIGH REQUIREMENTSEQ9 LOW DEN!irry PMEUS FROM 0ZH.1M
1
2
3
Is project below density thresholds set forth in the applicable stormwater rule?
Does project maximize dispersed flow and minimize channelization of flow?
Has the use of piping been minimized per .1003(2)(c)?
Yes
Yes
Yes
4
Side slopes of the vegetated conveyances (H:V)
3 sf
5
Maximum velo ty in the vegatated 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)
11
Are treatment swales used instead of curb outlet swales?
12
Is stormwater released at the edge of the setback as dispersed Row?
Have stormwater outlets been designed to prevent downslope erosion?
Are variations to rule .1003 proposed?
Yes
13
Yes
No
14
ADDITIONAL INFQRMATION
15
Please use this space to provide any additional information about this low density project:
Swale
#
Dralnape
Aareca
BUA
(ac)
Perwout
area
0
Q Slope
(cfs) N
V,,,,, V,nw,
(fps) (fps)
Flow depth
(ft)
1
0.75
0.28
0.48
0.08
0.52
0.54
3.09
0.60
7.85
4.83
5.00
5.00
4.83
2.67
0.43
0.25
2
0.14
0.06
3
0.21
0.11
0A0
0.60
1 1.00
10.11
5.00
4.00
0.27
4
0.53
0.13
0.39
0.45
1.89
7.85
5.00
4.27
0.35
5
0.68
0.23
0.46
0.50
2.70
4.83
5.00
3.89
0.44
6
1.00
0.44
0.56
0.57
4.52
10.11
5.00
4.99
0.21
7
1.21
0.53
0.66
0.57
5.47
0.40
5.00
1.85
0.71
8
2.10
0.69
1.41
0.50
8.33
2.09
5.00
3.79
0.58
9
10
11
12
13
14
15
16
17
18
19
20
21
22
28
24
25
26
27
28
29
30