SW6240101_Supplement-EZ Form_20240408

SUPPLEMENT-EZ COVER PAGE
!PROJECT INFORMATION
1 1 Project Name Freedom Acres
2 Project Area(ac) 64.64
3 Coastal Wetland Area(ac) 0
4 Surface Water Area(ac) 6.19
5 Is this project High 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) i30•MIN v
t 8 Wil the vegetated setback remain vegetated? i Yes a
9 If BUA is proposed in the setback,does it meet NCAC 0211 1003(911c_d)? Yes
i 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
14 Stormwater Wetland 0
15 Permeable Pavement 0
16 Sand Filter 0
17 Rainwater Harvesting(RWH) _ 0
18 Green Roof 0
19 Level Spreader-Filter StripILS-FS) _ 0
20 Disconnected Impervious Surface(DIS) _—_ 0
21 Treatment Swale 0
22 .;Dry Pond 0
23 StormFilter 0
24 Silva Cell 0
25 iBayfiker 0
-
26 Flterra i m_ 0
LOADED
'DESIGNER CERTIFICATION
m.•IC,.. _...1.-.�6,4...,
27 Name and Title Fleet Temple, PE
28 Organization: Fleet Temple Engineering, PLLC
29 Street address: 5245 Red Hill Church Rd.
30 City,State,25 Coats,NC 27521
31 Phone number(s): 910-658-2446
t 32 Email: [e-mail] i
Certification Statement
I certify,under penalty of law that this Supplement-EL 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
`\\t�111 a111111
r f ignature of Designer
Win`• 44 ••t�f,�
ti -
Seal Date

DRAINAGE AREAS
1 Is this a IV density Pam«? No,_:__--
t 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 2
Is all/part of this project subject to previous rule
5 versions? i O _-
10RP.1S LOADED
DRAINAGE AREA INFORMATION Entire Stte l D 1 LD 2
4 `T pe of SCM Walkers Creek DA Bear Branch DA
5 .Total drainage area(sq ft) 3085194 1615473 1200319
6 Onsite drainage area(sq ft) 3085194 = 1615473 _ 1200319
7 Offsite drainage area(sq ft) 0 0 0
8 Total BUA in project(sq ft) _ € 674236 sf 386776 sf 287460 sf
-
New BUA on subdivided lots(subject to permitting)
9 (sq ft) 524500 sf 316800 sf � 207700 sf
New BUA not on subdivided lots(subject to
10 '•-molting)(sf) 149736 sf 1 69976 sf 79760 sf
11 Offsite BUA(sq ft) sf & _1
12 1 Breakdown of new BUA not on subdivided lots:
' -Parking(Nit) _
-Sidewalk(sq_ft 1
-Roof(sq ft) __
-Roadway(sq ft) 149736 sf 69976 sf 79760 sf
-Future(sq ft) F.
' -Other,please specify in the comment box _ _1_ .._ _
below(sq ft) 1New infiltrating permeable pavement on
(. 13 subdivided lots(sq ft) �---
New infiltrating permeable pavement not on F
1 14 subdivided lots(sq ft) sf
Existing BUA that will remain(not subject to r
15 ;Permitting)(sg ft) -----_-_-_.---
16 `Existing BUA that is already permitted(=• ft
m 17 Existing BUA that will be removed(sgft)
`18 Percent BUA 24% 24% T 24%
19 Design storm inches) —__ . —____._ —___ Y._.
t 20 Design volume of SCM(cu ft) •
-4-21 Calculation method for design volume — __. � _
ADDITIONAL INFORMATION a� g
T
Please use this space to provide any additional information about the
22 drainage area(s): z

LOW DENSITY
D„f5.1&1RfQUiR>F3iltiS LF {3Y DENS -
i 1 ;Is project below density thresholds set forth in the applicable stormwater nie? Yes -
s
2 Does project maximize dispersed flow and minimize channelization of flow? Yes B
3 :Has the use of piping been minimized per.1003(2Xc)?
Yes a
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
7 ' Maximum longitudinal slope of curb outlet swale(s)(%) 5%
8 i Bottom width of curb outlet swale(s)(feet) 6
9 ' Maximum side slope of curb outlet swale(s)(H:V) 11-
10 i Minimum length of curb outlet swale(s)(feet) 100 ft
11 Are treatment swales used instead of curb outlet swales? No
12 i Is stormwater released at the edge of the setback as dispersed flow? s Yes )
13 'Have stormwater outlets been designed to prevent downslope erosion? Yes
A.
14 iAre variations to rule.1003 proposed? No
15 Please use this space to provide any additional information about this low density project:
E
1
I
SWALES>WALES g1-54 ROADSIDE DITCHES 8,LOT LINE SY1/ALES DESIGNED PER CURB OUTLET SVVA1 PS
Drainage Pervious V,a„ Flow de th
Swale BUA 4 Slope V.,,,, p
Area (ac) area C
# (cfs) (%) (fps) ((Ps) (ft)
^ -�e_
1 3 00 068 2.33 0.50 10.80 4.55 5.00 3 50 1 10
2 2 10 0.47 1 63 0 50 7.56 4 55 5.00 3 20 1 00
3 290 0.65 2.25 0.50 10.44 0.93 500 310 1.20
4 120 0.27 0.93 0:50 4 32 0-93 5 00 2.50 080
5 0.20 005 016 050 072 267 500 230 040
1
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 1-08 100 500 1.80 0-50
8 1.70 0.38 1.32 0.50 6.12 1.00 500 2.80 0 90
9 0.70 0 16 0.54 0.50 2.52 0.59 5 00 1 80 0.70 i
10 4 60 1 04 3 57 0.50 16 56 0.59 5 00 3.00 1.50
11 1 40 0.32 1.09 0.50 5 04 0 87 5 00 2.50 090
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 63 500 4 40 1 30
14 5 20 1 17 4.03 0.50 18 72 1.63 5.00 4.40 1.30
15 100 0.23 078 0.50 3.60 050 500 1.90 090
16 0 10 0 02 0.08 0.50 0.36 0.50 5.00 1 10 040
17 040 009 031 050 1-44 050 5.00 150 060
18 220 0.50 1.71 0.50 7.92 0.50 5.00 2 30 1.20
19 200 0 45 1.55 0 50 7.20 0.50 5.00 2 30 1.10
20 0 40 0 09 0.31 0 50 1-44 0.50 5 00 1.50 0.60
21 410 0.92 3.18 050 1476 050 500 270 1.50
22 0.30 0 07 0.23 0 50 1.08 0.50 5 00 1 40 0 60
23 020 005 016 050 0.72 0.82 5.00 1.50 0.40
24 0 70 0 16 0.54 0.50 2.52 0 82 500 200 070
25 0.20 005 0 16 0.50 0 72 0.61 5.00 1.30 0 50
26 0.50 0.11 0.39 0.50 1.80 061 500 170 070
27 0,30 0 07 0.23 050 1.08 8.53 5-00 4 00 0.30
28 080 0 18 0.62 0 50 2.88 8.53 5 00 3.30 060
29 020 005 0.16 0.50 0.72 2.52 5-00 2.30 040
30 0 50 0 11 0-39 0 50 1 80 2.52 5.00 2.90 0.50

Low Va
Density Attachment
fi Drainage Pervious
Q Slope Vanow tt„ai Flow
Swale # Area area C
ac (ac) (ac) (cfs)
(fps) (fps) depth (ft)
31 1.50T-1- 0.34 1.16 0.50 5.40 6.57 5.00 3.40 0.80
32 0.30 0.07 0.23 0.50 1�1.08 6.57 5.00 4.00 0.30
33 •s 1.80 0.41 1.40 0.50 6.48 3.33 --I-- 5 00 5.00 0.70
34 0.30 0.07 0.23 0.50 1.08 17
3.33 1 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
37 4.10 0.92 3.18 0.50 i 14.76 1.00 5.00 j 3.50 1.30
38 0.50 0.11 0.39 0.50 ;__. 1.80 1.00 4 5.00 1.r.2.10 0.60
39 4.40 0.99 3.41 0.50 15.84 5.14 i 5.00 1 3.90 1.20
40 0.60 0.14 0.47 0.50 € 2.16 5.14 1 5.00 4.00 0.40
41 I 0.20 0.05 0.16 0.50 i 0.72 2.79 5.00 2.30 0.40
42 s 0.20 _ 0.05 0.16 0.50 $. 0.72 2.79 5.00 2.30 0.40
43 0.40 0.09 0.31 0.50 1 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 j 0.50
45 0.60 0.14 0.47 0.50 2.16 5.00 5.00 f 4.00 0.50
46 0.60 i 0.14 0.47 0.50 2.16 5.00 I 5.00 i 4.00 0.50
47 3.40 0.77 2.64 0.50 '_
� 12.24 2.59 5.00 2.90 1.00
48 1 0.60 0.14 0.47 0.50 2.16 2.59 5.00 2.90 1.00
49 3.20 0.72 2.48 0.50 11.52 5.67 5.00 3.70 1.10
50 0.40 0.09 0.31 0.50 ; 1.44 5.67 5.00 3.70 0.40
51 1.90 0.43 1.47 0.50 j 6.84 2.25 5.00 3.90 0.80
_T.__.
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