SW3241004_Supplement-EZ Form_20241118

SUPPLEMENT-EZ COVER PAGE
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'PROJECT INFORMATION
1 Project Name Central Cowboy Church
2 Project Area(ac) 10.46
3 Coastal Wetland Area(ac) 0
4 Surface Water Area(ac) 0
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) 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:
11 Infiltration System _
12 Bioretention Cell
13 Wet Pond _
14 Stormwater Wetland
15 Permeable Pavement _
16 Sand Filter
17 Rainwater Harvesting(RWH)
18 Green Roof
19 Level Spreader-Filter Strip(LS-FS)
20 Disconnected Impervious Surface(DIS)
21 Treatment Swale
22 Dry Pond
23 StormFilter
24 Silva Cell
25 Bayfilter
26 Filterra
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(DESIGNER CERTIFICATION
27 Name and Title: Liz Warlick,PE,Civil engineering manager
28 Organization: CESI
29 Street address: PO Box 268
30 City,State,Zip: Concord,NC 28026
31 Phone number(s): 704-489-2684
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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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
DRAINAGE AREA INFORMATION I Entire Site - LD 1
Dispersed over
4 Type of SCM Vegetation
5 Total drainage area(sq ft) ±9,164,588
6 Onsite drainage area(sq ft) ±455,638
7 Offsite drainage area(sq ft) ±8,708,951
8 Total BUA in project(sq ft) 102440 sf
New BUA on subdivided lots(subject to permitting)
9 (sq ft) N/A
New BUA not on subdivided lots(subject to
10 permitting)(sf) _ 61710 sf
11 Offsite BUA(sq ft) 1516193 sf
12 Breakdown of new BUA not on subdivided lots:
-Parking(sq ft) 29862 sf
-Sidewalk(sq ft)
-Roof(sq ft)
-Roadway(sq ft) 31847 sf
-Future(sq ft)
-Other,please specify in the comment box
below(sq ft)
New infiltrating permeable pavement on
13 subdivided lots(sq ft) N/A
New infiltrating permeable pavement not on
14 subdivided lots(sq ft) N/A
Existing BUA that will remain(not subject to
15 permitting)(sq ft) 40731 sf
16 Existing BUA that is already permitted(sq ft) N/A
17 Existing BUA that will be removed(sq ft) N/A
18 Percent BUA 14%
19 Design storm(inches) 1.0 in
20 Design volume of SCM(cu ft) N/A
21 Calculation method for design volume N/A
ADDITIONAL INFORMATION
Please use this space to provide any additional information about the
22 drainage area(s):
Low density site,dispersed flow is utilize;max velocity is 3.12 FPS from
Culvert C downstream calculation.This flow will disperse over existing
vegetation before the side setback.

LOW DENSITY
1DESIGN REQUIREMENTS FOR LOW DENSITY PROJECTS FROM 02H .1003
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 & 10:1
5 Maximum velocity in the vegetated conveyances during the 10-year storm? 3.12
6 Are curb outlet swales proposed? No
7 Maximum longitudinal slope of curb outlet swale(s) (%)
8 Bottom width of curb outlet swale(s) (feet)
9 Maximum side slope of curb outlet swale(s) (H:V)
10 Minimum length of curb outlet swale(s) (feet)
11 Are treatment swales used instead of curb outlet swales?
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:
CULVERT C Inv Out for 10-year is 3.12 FPS; this flow will disperse over vegetation before reaching the
side setback of the property.
Drainage Pervious
Swale Area BUA area C Q Slope Flow depth
—# (ac) (ac) (ac) (cfs) (%) (ft)
1
2
3
4
5
6
7