SW3210201_NC EZ Supplemental Form_20210513

SUPPLEMENT-EZ COVER PAGE
FORMS LOADED
PROJECT INFORMATION
1 Project Name
2 Project Area ac
3 Coastal Wetland Area ac
4 Surface Water Area ac
5 Is this project High or Low Density?
6 1 Does this project use an off -site SCM?
COMPLIANCE WITH 02H .1003(4) IN
7
Width of ve etated setbacks provided feet
15, 25, 40
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
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
Ba filter
26
Filterra
FORMS LOADED
DESIGNER CERTIFICATION
27
Name and Title:
David Powlen, RLA
28
Organization:
Little Diversified Architectural Consulting
29
Street address:
615 South College Street
30
City, State, Zip:
Charlotte, North Carolina
31
Phone numbers :
704 561-3272
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.
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Signature of Designer
5/10/2021
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
4
Type of SCM
N/A
5
Total drainage area (sq ft
243,936
6
Onsite draina a area (sq ft
243,936
7
Offsite drainage area (sq ft
0
8
Total BUA in project (sq ft
76666 sf
9
New BUA on subdivided lots (subject to
ermitting) (sq ft
N/A
10permitting)
New BUA not on subdivided lots (subject to
s
76666 sf
11
Oftsite BUA (sq ft
0 sf
12
Breakdown of new BUA not on subdivided lots:
Parkin sq ft
36581 sf
Sidewalk (sq ft
10110 sf
Roof (sq ft
20670 sf
Roadway s ft
9305 sf
Future (sq ft
24750 sf
Other, please specify in the comment box
below (sq ft
1350 sf
13
New infiltrating permeable pavement on
subdivided lots (sq ft
0 sf
14
New infiltrating permeable pavement not on
subdivided lots (sq ft
0 sf
15permitting)
Existing BUA that will remain (not subject to
s ft
0 sf
16
Existing BUA that is already permitted (sq ft
0 sf
17
Existing BUA that will be removed (sq ft
0 sf
18
Percent BUA
11 %
19
Design storm inches
1.0 in
20
Design volume of SCM cu ft
178 cf
21
Calculation method for design volume
Simple Method
ADDITIONAL INFORMATION
22
Please use this space to provide any additional information about the
drainage area(s):
Other BUA is heavy-duty concrete in mechanical yard and dumpster
enclosure.

LOW DENSITY
SIGN
REQUIREMENTS FOR LOW DENSITY PROJECTS FROM 02H .1003
1
r
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 sf
5
Maximum velocity in the vegetated conveyances during the 10-year storm?
4.77
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
11
Are treatment swales used instead of curb outlet swales?
No
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: