SW4240602_Supplement-EZ Form_20241121

SUPPLEMENT-EZ COVER PAGE
FORMS LOADED
PROJECT INFORMATION
1 Project Name Fiddlers Ridge
2 Pro ect Area ac 9.94
3 Coastal Wetland Area ac 0
4 Surface Water Area ac 0
5 I5 this ro'eci Hi h or Low Densi ? Low
6 Does this project use an off-site SCM? No
COMPLIANCE WITH 02H.1003(4)
7 Width of vegetated setbacks provided fees NA
B Will the vegetated setback remain vegetated? NIA
9 If BUA is proposed in the setback,does it meet NCAC 02H.1003 4 c-d? NIA
10 Is streambank stabilization proposed on this project? No
NUMBER AND TYPE OF SCMs:
i 1 Enfiltration S stem
12 Bioretention Cell
13 Wet Pond
14 Stormwater Wetland
P16
Permeable Pavement
Sand Filter
Rainwater.Harvestin RWH
18 ;Green Roof
V25
Level Spreader-Filter Strip LS-FS
Disconnected Impervious Surface DIS
Treatment Swale
D Pond
StormFilter
Silva Cell
BayFlter
26 Filterra
FORMS LOADED
DESIGNER CERTIFICATION
27 Name and Title: Steve Cause ,President
28 Or anization: Allied Desi
29 Street address: 4720 Kester Mill Road
30 Ci ,State,Zi : Winston-Salem,NC 27103
31 Phone number s: 336 765-2377
32 ,Email: [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,
speaications.operation and maintenance agreements and other supporting information are consistent with the information provided here.
L7esrgner
C trA IIrP����rrrr
r,
¢ . . i...
O_-•aF SS oti•. 2
~ 4QEAL Signature (Designer
19701 zz
NG IN`-,
-2
�131Y11114Y1111�\\ pate

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
Is all/part of this project subject to previous rule
5 versions? No
FORMS LOADED
DRAINAGE AREA INFORMATION Entire Site LD 1
4 Type of SCM 9.94 9.94
5 Total drainage area (sq ft 9.94 9.94
6 Onsite drainage area (sq ft 9.94 9.94
7 Offsite drainage area (sq ft 0 0
8 Total BUA in project (sq ft 98341 sf 98341 sf
New BUA on subdivided lots (subject to permitting
9 (sq ft 76000 sf 76000 sf
New BUA not on subdivided lots (subject to
10permitting) sf 22341 sf 22341 sf
11 Offsite BUA (sq ft sf sf
12 Breakdown of new BUA not on subdivided lots:
- Parking (sq ft sf sf
- Sidewalk (sq ft sf sf
- Roof(sq ft sf sf
- Roadway s ft 23217 sf 23217 sf
- Future (sq ft sf sf
- Other, please specify in the comment box
below (sq ft
New infiltrating permeable pavement on
13 subdivided lots (sq ft sf sf
New infiltrating permeable pavement not on
14 subdivided lots (sq ft sf sf
Existing BUA that will remain (not subject to
15permitting) s ft sf sf
16 Existing BUA that is already permitted (sq ft sf sf
17 Existing BUA that will be removed (sq ft sf sf
18 Percent BUA 23% 23%
19 Design storm inches 25- ear 25- r
20 Design volume of SCM cu ft NA NA
21 Calculation method for design volume NA NA
ADDITIONAL INFORMATION
ase use this space to provide any additional information about the
r2T2dreinage area(s):

LOW DENSITY
DESIGN REQUIREMENTS FOR LOW DENSITY PROJECTS FROM 021-1.1003
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 sf
5 Maximum velocity in the vegetated conveyances during the 10-year storm? 3.3
6 Are curb outlet swales proposed? Yes
7 Maximum longitudinal slope of curb outlet swale(s)(%) 3
8 Bottom width of curb outlet swale(s)(feet) 2 ft
9 Maximum side slope of curb outlet swale(s)(H:V) 3:1
10 Minimum length of curb outlet swale(s)(feet) 100 ft
11 Are treatment swales used instead of curb outlet swales? No
12 Is stormwater released at the edge of the setback as dispersed flow? N/A
13 Have stormwater outlets been designed to prevent downslope erasion? Yes
14 JAre variations to rule.1003 proposed? No
ADDITIONAL INFORMAL IO
15 Please use this space to provide any additional information about this low density project:
Drainage Pervious
Swale A BUA area C Q Slope Vanaw Va�,,,ai Flow depth
Area# re (ac) ac (cfs) N (fps) (fps)(ac (ft)
1 0.27 0.29 0.69 0.60 1.22 2.55 4.00 1.65 0.26
2 0.49 0.12 0.27 0.60 2.22 2.55 4.00 2.10 0.35
3 1.22 0.26 0.60 0.60 5.53 2.60 4.00 2.10 0.57
4 0.65 0.06 0.15 0.60 2.94 2.00 4.00 2.05 0.43
5 0.54 0.20 0.46 0.60 2.45 1.00 4.00 1.30 0.53
6 0.53 0.02 0.04 0.60 2.40 1.00 4.00 1.29 0.52
7 0.44 0.01 0.03 0.60 1.99 4.55 4.00 2.74 0.26
8 0.40 0.21 0.50 0.60 1.81 4.55 4.00 2.63 0.25
9 1.55 0.08 0.19 0.60 7.02 1.15 4.00 1.42 0.38
10 0.90 0.15 0.36 0.60 4.08 1.15 4.00 1.10 0.29
11 0.24 0.09 0.20 0.60 9.38 2.50 4.00 3.30 0.51
12 0.23 0.20 0.46 0.60 2.03 2.50 4.00 1.33 0.18
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30