SW6220804_Supplement-EZ Form_20221116

SUPPLEMENT-EZ COVER PAGE
FORMS LOADED
PROJECT INFORMATIO
1 Project Name Rebekah Evans
2 Project Area (ac) 2.73
3 Coastal Wetland Area (ac) 0
4 Surface Water Area (ac) 0
5 Is this project High or Low Density? Low
F Does this Droiect use an off -site SCM? No
MPLIANCE WITH 02 03(4)
7 Width of vegetated setbacks provided (feet)
30
8
Will the vegetated setback remain vegetated?
Yes
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 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 Strip (LS-FS)
0
20
Disconnected Impervious Surface (DIS)
0
21
Treatment Swale
0
22
Dry Pond
0
23
StormFilter
0
24
Silva Cell
0
25
Bayfilter
0
26
Filterra
0
FORMS LOADED
SIGNER CERTIFICATION
27
Name and Title:
Joe Ervin, P.E.
28
Organization:
Pike Engineering, LLC
29
Street address:
123 N White St
30
City, State, Zip:
Ft Mill, SC 29715
31
Phone number(s):
843 697 0606
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.
Signature of Designer
Nov 15, 2022
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
5
Is all/part of this project subject to previous rule
versions?
No
FORMS LOADED
DRAINAGE AREA INFORMATION
Entire Site
LID 1
4
Type of SCM
5
Total drainage area (sq ft)
118918
118918
6
Onsite drainage area (sq ft)
118918
118918
7
Offsite drainage area (sq ft)
0
0
8
Total BUA in project (sq ft)
24535 sf
24535 sf
9
New BUA on subdivided lots (subject to
permitting) (sq ft)
sf
sf
10
New BUA not on subdivided lots (subject to
permitting) (so
sf
sf
11
Offsite BUA (sq ft)
sf
sf
12
Breakdown of new BUA not on subdivided lots:
Parking (sq ft)
Sidewalk (sq ft)
Roof (sq ft)
Roadway (sq ft)
24535 sf
24535 sf
Future (sq ft)
Other, please specify in the comment box
below (sq ft)
13
New infiltrating permeable pavement on
Isubdivided lots (sq ft)
14
New infiltrating permeable pavement not on
subdivided lots (sq ft)
15
Existing BUA that will remain (not subject to
permitting) (sq ft)
16
Existing BUA that is already permitted (sq ft)
17
Existing BUA that will be removed (sq ft)
18
Percent BUA
20.6
20.6
19
iDesign storm (inches)
20
Design volume of SCM (cu ft)
21
Calculation method for design volume
ADDITIONAL INFORMATION
22
Please use this space to provide any additional information about the
drainage area(s):
Proposed site has a total built upon area (BUA) of 20.6%. Stormwater runoff
for the site utilizes unchannelized surface flow (<1.5% slope) which passes
though an existing vegetated area (<0.6% slope) before flowing into existing
surface conveyances.

LOW DENSITY
DESIGN
REQUIREMENTS FOR LOW DENSITY PROJECTS FROM 02H .1003
Is project below density thresholds set forth in the applicable stormwater rule?
Yes
1
2
Does project maximize dispersed flow and minimize channelization of flow?
Yes
3
Has the use of piping been minimized per. 1 003(2)(c)?
Yes
4
Side slopes of the vegetated conveyances (H:V)
max 31
5
Maximum velocity in the vegetated conveyances during the 10-year storm?
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
1piease use this space to provide any additional information about this low density project:
All postdevelopment runoff will be discharged from the site by overland flow to existing drainage channels at
periphery of the development. No swales will be needed.