SW6231204_Supplement-EZ Form_20240117

SUPPLEMENT-EZ COVER PAGE
FORMS LOADED
PROJECT INFORMATION
1 Project Name Faircloth Gas Station
2 Project Area(ac) 64.7
''r 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
COMPLIANCE WITH 02H 1003(4) M1
R 7 Width of vegetated setbacks provided(feet) n/a
` 8 Will the vegetated setback remain vegetated? N/A
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
t 11 Infiltration System
12 ,Bioretention Cell
i 13 ;Wet Pond
t 14 Stormwater Wetland
15 ';Permeable Pavement ent '
16 ;Sand Filter _4
17 Rainwater Harvesting(RWH)
i
° 18 Green Roof
•
19 Level Spreader-Filter Strip(LS-FS) I
i 20 Disconnected Impervious
ervious Surface(DIS)DIS ,
f 21 Treatment Swale
22 ;Dry Pond
1 23 StormFilter
, 24 Silva Cell
1
25 .Bayfilter 1.
26 Filterra
FORMS LOADED
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DESIGNER CERTIFICATION pas 1
, 27 Name and Title: C. Scott Brown,PE
28 !Organization: 4D Site Solutions, Inc.
29 Street address: 409 Chicago Drive-Ste 112
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
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Seal Date

DRAINAGE AREAS
1 4ls 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
I I Is all/part of this project subject to previous rule
5 :versions? No
I I O R rv1 S LOADED
I
max..
DRAINAGE AREA INFORMATION Entire Site LD 1
....a,
4 Type of SCM Low Density t Low Density I
5 )Total drainage area(sq ft) iI 2,818,716 2 818 716
IT6 jOnsite drainage area(sq ft) 2,818,716 2,818 716
t 7 Offsite drainage area(sq ft)
) 8 tTotal BUA in project(sq ft) 3 169040 sf a 169040 sf . 1
"New BUA on subdivided lots(subject to
9 }permitting)(sq h). _ ,
;New BUA not on subdivided lots(subject to
.gZ( 144069 sf 144069 sf _._
j, 10 Ipermittin sf)
t 11 Offsite BUA(sq ft) . .___ T.
j
12 :Breakdown of new BUA not on subdivided lots: (
LI
Parking(sq ft)1.
. AA
Roof(sq ft sq ft) ._ 7168 sf 0186 sf
€ 10186 t
j 68 sf
— I
Roadway(sq_ft) 119099 sf 119099 sf
i it
Future(sgft) t 7616sf1 7616sf
-
f .
Other, please specify in the comment box ✓ tsgft below( )
New infiltrating permeable pavement on t
13 }subdivided lots(sq ft) 1 t
New infiltrating permeable pavement not on )
114 `subdivided lots(sq ft) 1 ,.
Existing BUA that will remain(not subject to
ip 9)( q )
15 " ermittin s ft 1 24971 sf g 24971 sf
.._
@16 Existing BUA that is already permitted(sq ft)
17 Existing BUA that will be removed(sgft) 393 sf 1 393 sf
18 I Percent BUA 6% I, 6%
19 [Design storm(inches) i
20 Design volume of SCM(cu ft) A
21 Calculation method for design volume
ADDITIONAL INFORMATION
;Please use this space to provide any additional information about the 1
1 22 !drainage area(s): t
Future BUA is allotted for the outparcel ;j
i

LOW DENSITY
DESIGN REQUIREMENTS FOR LOW DENSITY PROJECTS FROM 02H.1003
1 Is protect below densely thresholds set forth in the applicable stormwater rule? Yes
1 2 Does protect 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) 2:1
5 Maximum velocity in the vegetated conveyances during the 10-year storm? 3.6 1
6 Are curb outlet swales proposed? Yes
• 7 Maximum longitudinal slope of curb outlet swale(s)(%) 1% i
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 l
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 z
14 I Are variations to rule 1003 proposed?
No
ADDITIONAL INFORMATION
15 Please use this space to provide any additional information about this low density project:
i
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q
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Swale Drainage BUA Pervious Q Slope Va., Vacua Flow depth
# fact
tact Area (ac) area C (cis) (%) (fps) lfps) (It)
1 2.44 1.88 0.56 0.80 15.39 0.85 4.50 2.61 1.25
2 12.27 5.67 6.61 0.60 35.60 0.36 4.50 2.33 1.95
3 12.71 5.86 6.84 0.60 36.85 0 36 4.50 2.53 2.25
4 14.88 5.72 9.15 0.55 31.58 0.36 4.50 2.43 2.10
6 15.44 5.94 9.50 0.55 32.77 0.36 2.00 1.49 2.13
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