SW6191203_Supplement-EZ Form_20200325

SUP PLEMENT-EZ COVER PAGE
LOAD SUPPLEMENT FORMS
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
Ba filter
0
26
Filterra
0
LOAD SUPPLEMENT FORMS
DESIGNER CERTIFICATION
27
Name and Title:
Jeremy Thomas,. PE. -President
28
Organization:
J Thomas Engineering Inc.
29
Street address:
143 Charlotte Avenue, Suite 104
30
City., Zip:
Sanford, NC 27330
31
_State,
Phone numbers :
_ _
9f 19) 777-6010
32
Email:
[e-mail]
Certification Statement:
I certify, underpenalty 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.
re
Seal Date

DRAINAGE AREAS
If so, •- .. -
•
Is all/part of this project subject
to previous rule
- • s
FORMS LOADED
�
Entire
Site
4
T pe of SCM
5
Total BUA in pErogLect (sq ft
105565 sf
New BUA on subdivided lots (subject to permitting)
6
(sq ft
70275 sf
New BUA outside of subdivided lots (subject to
7
ermittin s
35290 sf
8
Offsite - total areas ft
sf
9
Offsite BUA (sq ft
sf'm
10
Breakdown of new BUA outside subdivided lots:
- Parkin s ft
- Sidewalks ft
6059 sf
Roof Lsq ft
- Roadwa s ft
29231 sf
- Future s ft
- Other, please specify in the comment box
below s ft
New infiltrating permeable pavement on subdivided
11
lots (sq ft
New infiltrating permeable pavement outside of
12
subdivided lots (sq ft
Exisitng BUA that will remain (not subject to.
13permitting)
s ft
14
Existing BUA that is already s ft
,a
15
permitted
Existin BUA that will be removed (sq ft
16
Percent BUA
24%
17
Design storm inches
18
Design volume of SCM cu ft
19
Calculation method for design volume
ADDITIONAL
INFO_RMAl ION
Please use this space to provide any additional information about the
20
drainage area(s):
i
LMM��

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)
6:1
m5
Maximum velocity in the vegetated conveyances during the 10-year storm?
0.51
6
Are curb outlet swales proposed?
Yes
7
Maximum longitudinal slope of curb outlet swale(s) (%)
0%
8
Bottom width of curb outlet swale(s) (feet)
2 ft
9
Maximum side slope of curb outlet swale(s) (H:V)
6:1
10
Minimum length of curb outlet swale(s) (feet)
100 ft
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 A 003 proposed?
No
ITIONAL INFORMATION
15 I Please use this space to provide any additional information about this low
VEGETATIVE SWALES HAVE BEEN DESIGNED TO PROVIDE DISPURSED FLOW INTO THE WETLANDS. THE SWALES HAVE
BEEN DESIGNED AS A 0% SLOPE SWALE WITH NO OUTLET. AS THE SWALE OVERFILLS FROM A 10-YEAR STORM THE WATER
WILL SPILL OVER THE LOWER SIDE OF THE SWALE ALONG THE FULL LENGTH OF THE SWALE (100 FT MIN)
Swale
Drainage
BUA
Pervious
Q
Slope
Vauow
Va=��a�
Brea
area
C
Flow depth (ft)
#
(ac)
(cfs)
( /°)
(fps)
(fps)
ac
ac
1
1.22
28.30
38103400
0.65
6.04
0.00
1:00
0.54
1:24
2
29.40
36288,00
0,65
5.84
0:00
1.00
0.51
1.22
3
_1.18
0.84
46.00
16869:00
0.65
4.16
0.00
1000
0.47
110
�4. _
1017
25.80
37774.00
0.65
5.80
0.00
1.00
0,51
1.22
5
7
8
10
11
12
13
14
15
16
17
18
19
20
21
I
22
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