SW6231112_Supplement-EZ Form_20240117

SUPPLEMENT-EZ COVER PAGE
FORMS LOADED
IROJECT INFORMATION
ev,1 .Project Name .a ,.. Brayden Preserve Subdivision
2 Project Area(ac) 69.93 I
3 Coastal Wetland Area(ac) 0
4 Surface Water Area(ac) 0 1
5 Is this project High or Low Density? Low
6 Does this project use an off site SCM? No
:OMPLIANCE WITH 02H.1003(4)
7 Width of vegetated setbacks provided(feet) 30
8 Will the vegetated setback remain vegetated? Yes . /
9 ilf BUA is proposed in the setback,does it meet NCAC 02H 1003(4)(c-d)? N/A
I
10 Is streambank stabilization proposed on this project? No
(UMBER AND TYPE OF SCMs:
11 Infiltration System l
12 Bioretention Cell 1
13 Wet Pond
14 Stormwater Wetland
15 i Permeable Pavement
16 ;Sand Filter
17 Rainwater Harvesting(RWH) i
18 Green Roof !
a
19 ;Level Spreader-Filter Strip(LS-FS) •
20 !Disconnected Impervious Surface(DIS)
t
21 Treatment Swale l
22 'Dry Pond I
23 StormFilter
i
24 Silva Cell
25 Bayfilter
26 Filterra
FORMS LOADED
DESIGNER CERTIFICATION 1
27 iName and Title: C. Scott Brown,PE t
28 Organization: 4D Site Solutions, Inc
29 Street address: 409 Chicago Drive-Ste 112 i
30 City,State,Zip: Fayetteville, NC 28306
31 Phone number(s): 910-426-6777
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,specifications,
operation and maintenance agreements and other supporting information are consistent with the information provided here.
Designer
0`01111 I,1/,,
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_ Signature o Designer
SEA
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Seal Date

DRAINAGE AREAS
± f 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
RAINAGE AREA INFORMATION ' Entire Site 0 LD 1
t 1
4 ;Type of SCM t Low Density 0: Low Density t
5.. L 1Total drainage area(sq ft) t;, 3,046,153 1 3,046,153 J;
6 af:Onsite drainage area(sq ft) 3,046,163 t 3,046,153
t
; ',;
7 ;Offsite drainage area(sq ft) , 0 . 0
„
8 `;Total BUA in project(sq ft) ;
) 526876 sf ) 526876 sf -44.
New BUA on subdivided lots(subject to 9 .;;permitting)(sq if 408000 sf 1 408000 sf
New BUA not on subdivided lots(subject to ;
1 0 permitting)(sf) 118876 sf ; 118876 sf
li ;Offsite BUA(sq ft) t sf
, t t
12 ;Breakdown of new BUA not on subdivided lots:
-Parking(sq ft) t t
t
t
-Sidewalk(sq ft) t t
-Roof(sq ft) t t
t
' -Roadway(sq ft 118876 sf t 118876 sf
4 1 *
-Future(sq ft)
-Other, please specify in the comment box
t
t
below Isq_ft); t i
New infiltrating permeable pavement on 1 t)
4 4
13 Lsubdivided lots(sq ft) t , t
; .
5
New infiltrating permeable pavement not on A A"
14 Isubdivided lots(sq ft) ) ;
t
'Existing BUA that will remain(not subject to
ii:
15 !.PffPlitting.).(sq 1 1
16 i Existing BUA that is already permitted(sq ft) ; t
17 Existing BUA that will be removed(sq ft) i ..
t
18 1Percent BUA ) 17%
t 17% t
19LDesign storm(inches) 1 9, t
20 i Design volume of SCM(cu ft) t
1 ;
21 ;Calculation method for design volume ADDITIONAL INFORMATION
, .
Please use this space to provide any additional information about the 1
22 idrainage area(s): „
..
t
;

LOW DENSITY
DESIGN REQUIREMENTS FOR LOW DENSITY PROJECTS FROM 02H.1003
1 ;Is project below density thresholds set forth in the applicable stormwater rule? Yes
2 )
3 Haas the use of piping been project maximize mrinim zed ped flow d minr 1003(2)(c)�annelization of flow? Yes s
4 Side slopes of the vegetated conveyances(H.V)
5 Maximum velocity in the vegetated conveyances during the 10-year storm? 5
f 6 ,Are curb outlet swales proposed? No
7 Maximum longitudinal slope of curb outlet swale(s)(%) N/A
8 Bottom width of curb outlet swale(s)(feet) N/A
9 Maximum side slope of curb outlet swale(s)(H:V) N/A
10 ' Minimum length of curb outlet swale(s)(feet) N/A
t 11 Are treatment swales used instead of curb outlet swales?
12 .Is stormwater released at the edge of the setback as dispersed flow? N/A
" 13 Have stormwater outlets been designed to prevent downslope erosion? Yes a
14 ,Are variations to rule.1003 proposed? No a
ADDITIONAL INFORMATION
4 15 Please use this space to provide any additional information about this low density project:
Drainage f BUA Pervious
Swale Q Slope Va.,,, V.cm.i Flow depth
# Area (ac) area C
Tact (acl (cfs) (%) (fps) (fps) (ft)
1 0.14 0.03 0.11 0.45 0.48 9.00 5.00 2.71 0.17
2 0.38 0.09 0.29 0.45 1.32 5.00 5.00 2.79 0.32
3 0.74 0.17 0.57 0.45 2.55 7 20 5.00 4.35 0.37
4 0.58 0.13 0.44 0.45 2.00 7.20 5.00 3.99 0.33
5 0.82 0.19 0.63 0.45 2.82 2.30 5.00 2.31 0.56
6 3.32 0.77 2.55 0.45 11.47 2.30 5.00 3.78 0.93
7 _ 1.82 0.42 1.40 0.45 6.31 1.60 5.00 2.48 0.84
8
5.27 _ 1.22 4.06 0.45 18.25 0.84 2.00 1.52 1.69
9 0.37 0.09 0.29 0.45 1.29 4.00 5.00 2.43 0.35
10 0.68 0.16 0.53 0.45 2.37 4.00 5.00 3.01 0.44
11 1.14 0.26 0.88 0.45 3.96 5.90 5.00 4.16 0.32
12 1.62 0.37 1.25 0.45 5.60 2.60 5.00 3.16 0.69
13 4.02 0 93 3 09 0 45 13 91 2.60 5.00 4.34 0-95
14 0.06 0.01 0.05 0.45 0.21 5.00 5.00 1.43 0.15
16 1.78 0.41 137 0.45 6.16 5.00 5.00 4.79 0.58
16 1.40 0.32 1.08 0.45 4.86 1.70 5.00 2.35 0.75
17 7.03 1.62 5.41 0.45 24.32 1.00 5.00 2.99 1.35
18 2.05 0.47 1.57 0.45 7.08 5,00 5,00 3.87 0.70
19 0.38 0.09 0 30 0.45 1.33 5.00 5.00 2.79 0.32
20 1.13 0.26 0.87 0.45 3.92 0.57 5.00 1.15 0.99
21 2.18 0.50 1.68 0.45 7.55 2.90 5.00 3.74 0.74
22 0.95 0.15 0.81 0.40 2.93 1.60 5.00 1.90 0.64
23 10.77 1.66 9.11 0.40 33.14 1.60 5.00 4.42 1.50
24 0.88 0.14 0.74 0.40 2.70 4.00 ' 5.00 , 3.15 0.46
25 0.41 0.06 0.34 0.40 1.25 2.00 5.00 1.60 0.43
26 3.13 0.48 2.65 0.40 9.64 5.40 5.00 4.50 0.76
27 0.38 0.06 0.32 0.40 1.16 5.40 5.00 2.78 0.30
28 4.01 0.62 3.39 0.40 12.33 2.30 5.00 3.79 0.76
29 0.55 0.08 0.47 0.40 1.70 5.50 5.00 3.22 0.34
30 3.42 0.53 2.89 0.40 10.51 5.50 5.00 4.70 0.65

Low Density(contnued)