SW4220602_Supplement-EZ Form_20220921

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
Does this project use an off -site SCM?
Nordfab Systems, Inc. Buidli
13.91
1.15
Low
No
ion
COMPLIANCE WITH 02H .1003(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
ISand 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
1 Dry Pond
0
23
StormFilter
0
24
Silva Cell
0
25
Bayfilter
0
26
Filterra
0
FORMS LOADED
DESIGNER CERTIFICATION
27
Name and Title:
Benjamin A. Palmer, PE / Project Engineer
28
Organization:
Davis -Martin -Powell
29
Street address:
6415 Old Plank Road
30
City, State, Zip:
High Point, NC 27265
31
Phone number(s):
336-886-4821
32
1 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.
``�I11111111//� '
•`�� �pFEj�oiy � • '�
SEAL
25496
09/21/2022
F/VGI NEER
►►IIIIIII%%\`
Seal
Signature of Designer
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?
I No
FORMS LOADED
DRAINAGE
AREA INFORMATION
Type of SCM
Entire Site
LD 1
4
N/A
N/A
5
Total drainage area (sq ft)
605919
605919
6
Onsite drainage area (sq ft)
605919
605919
7
Offsite drainage area (sq ft)
0
0
8
Total BUA in project (sq ft)
305558 sf
305558 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
Offsite BUA (sq ft)
93238 sf
93238 sf
11
sf
sf
12
Breakdown of new BUA not on subdivided lots:
- Parking (sq ft)
11238 sf
11238 sf
- Sidewalk (sq ft)
sf
sf
- Roof (sq ft)
54000 sf
5400 sf
- Roadway (sq ft)
sf
sf
- Future (sq ft)
28000 sf
2800 sf
- Other, please specify in the comment box
below (sq ft)
13
New infiltrating permeable pavement on
subdivided lots (sq ft)
sf
sf
14
New infiltrating permeable pavement not on
subdivided lots (sq ft)
sf
sf
15
Existing BUA that will remain (not subject to
permitting) (sq ft)
212320 sf
212320 sf
16
Existing BUA that is already permitted (sq ft)
sf
sf
17
Existing BUA that will be removed (sq ft)
sf
sf
18
Percent BUA
24%
I
24%
19
Design storm (inches)
.0 in
.0 in
20
Design volume of SCM (cu ft)
cf
cf
21
Calculation method for design volume
cf
0
ADDITIONAL INFORMATION
Please use this space to provide any additional information about the
22 drainage area(s):

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
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)
31
5
Maximum velocity in the vegetated conveyances during the 10-year storm?
1.97
6
JAre 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
JAre variations to rule .1003 proposed?
No
ADDITIONAL INFORMATION
15 Please use this space to provide any additional information about this low density project: