SW6240401_Supplement-EZ Form_20240701

SUPPLEMENT-EZ COVER PAGE
FORMS LOADED
PROJECT INFORMATION
1 Project Name 1 Maple Drive
2 'Project Area(ac) 1 1.46
3 1Coastal Wetland Area(ac) 1 0
4 'Surface Water Area(ac) : 0
5 I Is this project High or Low Denstt�r? Low
{
6 Does this project use an off-site SCM? No
__ONOPLMM.CE WITH 02H.1003(4) ._
7 Width of vegetated setbacks provided(feet) ) 30 R
NalWill the vegetated setback remain vegetated? E Yes
9 If BUA is proposed In the setback,does it meet NCAC 02H.1003(4)( ? N/A
10 Is streambank stabilization proposed on this project? No }
NUMBER AND TYPE OF SCMs:
L11 Infiltration System ) 0
12 #Bioretention Cell
13 ,Wet Pond 0
14 Stormwater Wetland p
t 15 Permeable Pavement { _ 0
16 Sand Filter 0 __ ..._____ _
t
17 Rainwater Harvesting(RWH) 0
, 18 Green Roof 0
19 iLevel Spreader-Filter Strip(LS-FS) 0
20 Disconnected Impervious Surface(DIS) I 0
22 Treatment Swale 0
22 Dry Pond 0
23 StormFilter 0
24 Silva Cell 0
25 Bayfilter I 0
I 26 Filterra
r 0
FORMS LOADED
CERTIFICATION p r _
27 Name and Title: Fleet Temple,PE
28 Organization: Fleet Temple Engineering,PLLC
29 Street address: i 5245 Red Hill Church Rd.
30 ;City,State,Zip: Coats, NC 27521 1
31 1Phone number(st_ 910-658-2446
32 Emad: [e-mail]
Certification Statement.
I certify;under penalty of law that this Supplement-FZ 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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cJ^ _ Signature of Designer
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Seal w Date

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
12.- ° '. AREA INFORM/06N Entire Site ' LO 1
4 T of SCM ..t
5 Total' drains a area(s ft 101534 101534
6 Onsite drains a area ft 63690 63690
7 Offsite drainage area(sq ft) ------- 0 0
8 ;Total BUA in project(sq ft) 15000 sf 15000 sf
New BUA on subdivided lots(subject to permitting)' —
9 (s(1 R) — 15000 sf 15000 sf
New BUA not on subdivided lots(subject to
10 permitting)(sf) sf _.._ sf _
11 Offsite BUA(sq ft) sf
12 Breakdown of new BUA not on subdivided lots:
-Parking(sq ft) _--_.--
-Sidewalk(sq ft) —_-- --_..—.-
-Roof(sq ft) -- — — —
-Roadway(sq ft) — —
-Future(sq ft) _ :,
-Other,please specify in the comment box
below(sq ft) —.. — p
New infiltrating permeable pavement on t
13 subdivided lots�sq_ftZ____
New infiltrating permeable pavement not on
14 subdivided lots -• ft sfi —II
Existing BUA that will remain(not subject to "T f
15 •-rmitting)5sq� -- — -
16 Existing BUA that is already.permitted L. ft __
17 Existing BUA that will be removed(sq ft)
18 Percent BUA 23% 23%
19 Design storrnjnches) 1.0 in 1.0 in
20 Design volume of SCM(cu ft)
21 Calculation method for design volume t
ADbtT 1O NAL INFORMATION
Please use this space to provide any additional information about the
22 drainage areas) _ i
1

LOW DENSITY
DESIGN REQUIREMENTS FOR COW O
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 1
5 ;Maximum velocity in the vegetated conveyances during the 10-war storm? 3.8 ^^
_ 6 Are curb outlet swales proposed? _ Yes
7 Maximum longitudinal slope of curb outlet swale(s)(%) 4 ft
6%
8 Bottom width of curb outlet swale(s)(feet)
9 Maximum side slope of curb outlet swale(s)(H 3 1 I
10 i Minimum length of curb outlet swale(s)(feet) 100 ft
11 Are treatment swales used instead of curb outlet swales? No
12 Its stormwater released at the edge of the setback as dispersed flow? Yes t
r 13 !Have stormwater outlets been designed to prevent downslo erosion? Y�
a 14 Are variations to rule.1003 proposed? _
ADC�tL 11t ,•
15 Please use this space to provide any additional information about this low density project s
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Drainage Pervious
Swale t3UA Q Slope V,n,,, V.�„, Flow depth
# ; Area (ac) area C ( ) (%) (test (fps) (1f)
Lc..)w_a (act
1 0.20 0.05 0.15 0 50 0 72 1.00 5.00 1.60 0-40
2 080 019 061 0.50 288 3.80 500 3.70 0.50
3 0.80 0.19 0 61 0.50 2.88 1 00 5 00 220 070
4 0 50 0.12 0 38 0.50 1.80 4 40 5.00 3.40 0 40
5 0.50 0 12 0 38 0.50 1 80 1.30 5.00 2,20 0 50
6 0.50 0.12 0.38 0-50 1.80 5.00 5 00 3.60 0.40
7 0.50 0.12 0 38 0 50 1.80 1.70 5 00 2.40 0.50
8 0.20 0 05 0 15 0.50 0.72 2.20 5.00 2 00 0.30
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