SW6220802_Supplement-EZ Form_20220816

SUPPLEMENT-EZ COVER PAGE
FORMS LOADED
PROJECT. INFORMATION
1 iProject Name Champs Convenience Stare
2
_
ProjectArea (ac)
3.46�
3
Coastal Wetland Area (ac)
0
4
Surface Water Area ac
0
5
Is this rop ject High or Low Density?
High _
6 _
Does this project use an off -site SCM?
No
COMPLIANCE WITH 02H .1003(4)
7 Width of vegetated setbacks provided (feet) NA
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 1
12
Sioretention Cell
13
Wet Pond
Y
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
Pry Pand
I
_
23
StormFilter
24
Silva Cell
25
BaLfilter
26
Filterra
FORMS LOADED
DESIGNER CERTIFICATION
27 Name and Title: Johnny Glenn Tew / Project Engineer
28
Organization:
ECLS Global Inc.
29
Street address:
19 North Mckinley Street
3o
_
City, State, Zip:
Coats, N.C. 27521
31
Phone number(s):
910-897-3267 Ext. 105
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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4
DRAINAGE AREAS
9
Is this a high densityrqj
Yes
2
F1
If so, number of drains a areas/SCMs
1
3
Does this project have low densi areas?
No
4
If so, number of low density drainage areas
0
5
Is all/part of this project subject to previous rule
versions?
No
FORMS LOADED
DRAINAGE AREA INFORMATION ` Entire Site -1
4
Tvpe of SCM
Infiltration
5
Total drainage areas ft
155,509.20
87,120.00
6
Onsite drainage area (sq ft
150,717.60
82,328.40
7
Offsite draina a area (sq ft
4,791.60
4,791.60
8
Total BUA inA ro'ect (sq ft
78408 sf
67518 sf
9
New BUA on subdivided lots (subject to permitting)
s ft
NA
NA
10permitting)
New BUA not on subdivided lots (subject to
s
78408 sf
67518 sf
11
Offsite BUA (sq fi
sf
sf
12
Breakdown of new BUA not on subdivided lots:
Parkin s ft
8086 sf
8086 sf
Sidewalks fE
10271 sf
4608 sf
Roofs ft
6600 sf
6600 sf
Rom (sq ft)
48027 sf
42800 sf
- Future (sq ft
NA
NA
Other, please specify in the comment box
below s ft
5424 sf
5424 sf
13
New infiltrating permeable pavement on
subdivided lots_(sq ft)
NA
mm
NA
14
New infiltrating permeable pavement not on
subdivided lots sq ft
NA
NA
15
Existing BUA that will remain (not subject to
ermittin ) (sq ft)NA
NA
16
Existing BUA that is alread permitted (sg ft
NA
NA
17
Existing BUA that will be removed (sq ft
NA
NA
18
Percent BUA
50%
78%
19
Desi n storm inches
1.0 in
20
Desi n volume of SCNi cu €t
6327 cf
21
ADDITIONAL
Calculation method for design volume
INFORMATION
Simple
Please use this space to provide any additional information about the
22 drainage area(s):
"Other' impervious came from big fuel island (3,360sf), small fuel island
1,056.00 so, big slab over fuel tanks ( 528 so, small slab over fuel tanks ( 96
so, dumpster pad and apron ( 384 so.

IPIFILTRATION SYSTEM
1 IDrainage area number
1
2 Minimum required -treatment volume cu ft
GENERAL MDC FROM 62H .1050
3 Is the SCM sized to treat the SW from all surfaces at build -out?
6534 cf
No
4
Is the SCM located away from contaminated soils?
Yes
5
What are the side slopes of the SCM (H:V or enter "Vertical' for
trenches)?
vertical
6
Does the SCM have retaining walls, gabion walls or other engineered
side slopes?
No
7
Are the inlets, outlets, and receiving stream protected from erosion
10- ear storm)?
Yes
8
Is there an overflow or bypass for inflow volume in excess of the
des i n volume?
Yes
9
What is the method for dewatering the SCM for maintenance?
Pump (preferred)
10
If le, will the SCM be cleaned out after construction?
Yes
11
Domaintenance access comply with General MDC (8)?
Yes
12
Dodrainage easement comp) with Generat MDC (9)?
Yes
13
If tis on a single family lot, does (will?) the plat comply with
GeDC 10 ?
L
NIA
14
Is tO&M Agreement that complies with General MDC (11)?
Yes
15
Is tO&M Plan that complies with General MDC (12)?
16
DoCM follow the device specific MDC?L
LNo
17
IWIITRATION
18
WaCM desi ned b an NC licensed rofessional?
YSTcAARA 1 cor-A 2H .1051
Proposed slope of the subgrade surface (%}
19
Are terraces or baffles provided?7
7No
20
Soils Pat&
Type o€ pretreatment:
Forebay
the soil investigated in the footprint and at the elevation of the
ations stem?
Yes
*23Depth
T elevation (fmsl
326.00
to SHWT er soils repo
24.00
nd elevation a# burin in soils report (fmsl)
328.00
etailed hydrogeologic study attached if the separation is
between 1 and 2 feet?
NIA
26
Soil infiltration rate (inlhr)e
0.60
27
Factne):
1.31
29� 113oftom elevation (fmsi 328 ft
334
32 Bottom surface area ft2 ) 4189 ft
33 Storage elevation surface area ftz1 4189.4
)r Trenches Only
34
Len the (ft)
35
Width (ft)
36
Perforated pipe diameter, if applicable (inches)
37
Number of laterals
38
Total length of perforated piping
39
Stone type, if ap licable
rosif (°/a)
7308
ree of fines?ne
wrapped in eotextile fabric?ast
one ins ection ort been provided?
44 Deslgn volume of SCM (cu ft) tnnti� a
45 1 Time to draw down hours
DDITIONAL INFORMATION
46 please use this space to provide any additional information about the
tion system is a network of underground storm chambers with isolator rows to
as torbays.
Infiltration 1 951 AM 7/27/2022