SW6240101_Supplement-EZ Form_20240115

SUPPLEMENT-EZ COVER PAGE
PROJECT INFORMATION t
1 Project Name Freedom Acres
2 Project Area(ac) 70.01
3 Coastal Wetland Area ac
______. , _ii
4 4 Surface Water Area(ac) 4.53
5 Is this project High or Low Density? Low j
6 Does this project use an off-site SCM? No
COMPLIANCE WITH 02H.1003(4) 's
7 Width of vegetated setbacksprovided(feet] 30'MIN
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 0
12 Bioretention Cell 0
13 Wet Pond 0 T_ —
' 14 ,Stormwater Wetland 0
15 Permeable Pavement 0
L16 Sand Filter 0
17 Rainwater Harvesting(RWH) 0
_18 Green Roof --- _— 0
19 Level Spreader-Filter Strip(LS-FS) p
( 20 Disconnected Impervious Surface(D1S) 0
21 Treatment Swale 0
22_ Dry Pond 0
23 StormFilter 0
24 Silva Cell — ,___
25 Bayfilter 0
[ 26 Filterra __ 0
FORMS LOADED
DESIGNER CERTIFICATION
27 Name and Title: Fleet Temple,PE
28 Organization: Fleet Temple Engineering, PLLC
29 Street address: 5245 Red Hill Church Rd.
30 City,State,Zip: Coats, NC 27521 i
31 Phone number(s): 910-658-2446
i32_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,
specifications,operation and maintenance agreements and other supporting information are consistent with the information provided here
Designer
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Seal Date
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UKAlNAU AKtAS
1 Is this a high density project? _ No
2 If so,number of drainage areas/SCMs 0
3 .Does thispr ct 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
oA0E0 I
DRAINAGE AREA INFORMATION Entire Site LD 1
4 Type of SCM
5 Total drainage area(sq ft) 3049503 3049503
6 Onsite drainage area(sq ft) 3049503 3049503
7 Offsite drainage area(sq ft) 0 0
8 Total BUA in project(sq ft) 685856 sf [ 685856 sf
New BUA on subdivided lots(subject to permitting)
9 (sq ft) 536120 sf f 536120 sf
New BUA not on subdivided lots(subject to
10 permitting)(sf) 149736 sf 149736 sf
11 Offsite BUA(sq ft) sf
ry(
12 Breakdown of new BUA not on subdivided lots:
-Parking (sq ft)
-Sidewalk(sq ft)
-Roof(sgft)
-Roadway(sq ft) _ 149736 sf 149736 sf
-Future(sq ft)
-Other,please specify in the comment box j_.
belo_w_fsq
New infiltrating permeable pavement on
13 subdivided lots(sq ft) —
New infiltrating permeable pavement not on
14 subdivided lots(sq ft) sf _
Existing BUA that will remain(not subject to
15 4 rmitting)(sq ft)
16 'Existing BUA that is already permitted ft
17 Existing BUA that will be removed(m ft
18 Percent BUA _ 23% 23%
19 .,_:Design storm(inches) j
20 Design volume of SCM(cu ft)
21 Calculation method for design volume
ADDITIONAL INFORMATION
Please use this space to provide any additional information about the
22 drainage area(s):
)
-- �_ ®.

LOW DENSITY
OESSiN,REQJJHREM1ENTS FOR lOW DENSITY PROJECTS FROM 02H.1,003
1 Is project below density thresholds set forth in the applicable stormwater nie? 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 1
5 Maximum velocity in the vegetated conveyances during the 10-year storm? 5
6 Are curb outlet swales proposed? Yes 1
7 Maximum longitudinal sloped curb outlet swale(s)(%) 5% I
width
9 Maximum side slope of curb outlet swale(s)(H:V) 4 T 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?_ Yes
13 Have stormwater outlets been designed to prevent downslope erosion'? Yes
14 Are variations to rule 1003 proposed'? No
ADDITIONAL INFORMATION
15 Please use this space to provide any additional information about this low density project
r
J
CURB OUTLET SWALES SWALES#1-54
Q Slope V,,>, depth
Drainage BUA Pervious V,,,,,,, Flow de th
# (ac)Area area C (cfs) (%) (fps) (fps) (ft)
(ac) (ac)
1 300 068 233 050 10.80 455 500 350 110
2 2 10 0 47 1.63 0.50 7 56 4.55 5 00 320 1 00
3 2.90 0 65 2.25 0 50 10 44 0 93 5 00 3 10 1 20
4 1.20 0.27 0.93 0.50 4.32 0.93 5.00 2.50 0.80
5 0.20 005 0.16 050 0.72 267 500 230 040
6 0 80 0 18 0 62 0 50 2 88 2 67 5.00 3 30 0 60
7 0 30 0.07 0 23 0 50 1 08 1 00 5.00 1 80 0 50
8 1.70 0 38 1.32 050 6.12 1 00 5 00 2.80 0.90
9 0 70 0 16 0 54 0 50 2.52 0 59 5 00 1 80 0.70
10 460 104 357 0.50 1656 059 500 3.00 1.50
11 140 032 109 050 504 0.87 500 250 0.90
12 4 90 1 10 3 80 0 50 17 64 0 87 5 00 3 50 1 40
13 4 90 1 10 3 80 0 50 17 64 1 63 5 00 4 40 1 30
14 520 1,17 403 0.50 1872 163 500 440 130
15 100 0.23 078 050 3.60 0.50 500 1.90 090
16 010 002 008 0.50 036 050 5.00 1.10 040
17 040 009 031 050 144 0.50 500 150 060
18 220 0.50 1 71 0 50 7 92 0 50 5 00 2 30 1 20
19 2 00 0.45 1 55 0.50 7 20 0 50 5 00 2 30 1 10
20 0 40 009 031 0 50 1.44 0 50 5 00 1 50 0 60
21 4 10 0 92 3 18 0 50 14 76 0 50 5 00 270 1 50
22 030 0.07 023 0.50 108 050 500 1,40 060
23 0.20 005 0.16 0.50 072 082 500 1.50 040
24 070 0.16 054 0.50 2.52 0.82 500 200 070
25 020 0.05 016 0.50 072 061 500 130 050
26 0 50 0 11 0 39 0 50 1 80 0 61 5 00 1 70 0 70
27 0 30 0 07 0.23 0 50 1 08 8.53 5 00 4.00 0 30
28 080 018 062 050 288 853 500 3.30 060
29 020 005 016 050 072 252 5.00 2.30 0.40
30 0 50 0 11 0 39 0 50 1 80 2-52 5.00 2.90 0.50

Low Density Attachment 4
Drainage BUA Pervious Q Slope Vauow Vactua, Flow
Swale# Area area C
i (ac) (ac) (ac) (cfs) 04)) (fPs) (fps) depth (ft)
131 1.50 0.34 1.16 0.50 5.40 6.57 5.00 3.40 0.80 m
1 32 0.30 0.07 0.23 0.50 1.08 6.57 5.00 4.00 0.30
33 1.80 0.41 1.40 0.50 6.48 3.33 5.00 5.00 0.70
34 0.30 0.07 0.23 0.50 1.08 3.33 5.00 2.80 0.40
35 ^ 2.10 0.47 1.63 0.50 7.56 3.33 5.00 5.00 0.80
36 0.40 0.09 0.31 0.50 1.44 3.33 5.00 3.00 0.40
I 37 4.10 0.92 3.18 0.50 14.76 1.00 5.00 3.50 1.30
38 0.50 0.11 0.39 0.50 1.80 1.00 5.00 2.10 0.60
( 39 _4.40 0.99 3.41 0.50 15.84 5.14 5.00 3.90 1.20 _
I 40 0.60 0.14 0.47 0.50 2.16 5.14 5.00 4.00 0.40
41 0.20 0.05 0.16 0.50 0.72 2.79 5.00 2.30 0.40
42 0.20 0.05 0.16 0.50 0.72 2.79 5.00 2.30 0.40
1. 43 0.40 0.09 0.31 0.50 1.44 1.00 5.00 1.90 0.50
44 0.40 0.09 0.31 0.50 1.44 1.00 5.00 1.90 0.50
45 1 0.60 0.14 0.47 0.50 2.16 5.00 5.00 4.00 0.50
46 r 0.60 0.14 0.47 0.50 2.16 5.00 5.00 4.00 0.50
47 3.40 0.77 2.64 0.50 12.24 2.59 5.00 2.90 1.00
48 0.60 0.14 0.47 0.50 2.16 2.59 5.00 2.90 1.00
1 49 3.20 0.72 2.48 0.50 11.52 5.67 5.00 3.70 1.10
1 50 0.40 0.09 0.31 0.50 1.44 5.67 5.00 3.70 0.40
a 51 1.90 0.43 1.47 0.50 6.84 2.25 5.00 3.90 0.80
52 0.20 0.05 0.16 0.50 0.72 2.25 5.00 2.20 0.40 _
53 1.10 0.25 0.85 0.50 3.96 3.09 5.00 3.80 0.70
54 0.10 0.02 0.08 0.50 0.36 3.09 5.00 2.00 0.30