SW6221201_Supplement-EZ Form_20221209

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FORMS LOADED
ROJECT INFORMATION
1 Protect Name
OMPLIANCE WITH 02H .1003(4)
7 Width of ve etated setbacks provided(feet)
the veastated setback remain
9 IlfBUAisproposed in the setback does it meet NCAC 02H.1003 4 c-d ?
10 lis streambank stabilization proposed on this proiect?
Ample Storage
6.18 _
0
0
High
No
UMBER AND TYPE OF SCMs:
11
Infiltration S stem
12
Bioretention Cell
13
Wet Pond
1
14
Stormwater Wetland
15
Permeable Pavement
16
Sand Filter
17
Rainwater Harvesting RWH
18
Green Roof
19
Level Spreader -Filter Stri LS-FS
20
Disconnected Impervious Surface DIS
21
Treatment Swale
22
Dry Pond
23
StormFilter
24
Silva Cell
25
Bayffiter
26
lFilterra
FORMS LOADED
ESIONER CERTIFICATION
27
Name and Title:
John F. Oglesby, PE - Sr. Project Manager
28
Organization:
CSD Engineering
29
Street address:
115 E. Third Street
30
City, State Zip:
Wendell, NC 27591
31
Phone numbers :
_ @19) 624-0997
32
Email:
John-engineering.com
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.
i
a SEAL
• 032721 =
0016, - •
Sigrsigner
Date f 0-10-

i MAI NAV C ARCH)
1
Is this a hi h densi ro'ect?
Yes
2
If so, number of drainage areas/SCMs
1
3
Does this ro'ect have low density areas?
No
4
If so number of low density drains a areas
0
5
Is all/part of this project subject to previous rule
versions?
No
FORMS LOADED
RAJ
AREA INFORMATION
Entire Site
1
Wet Pond
202,525
202,525
0
170952 sf
n/a
4
Type of SCM
Total drainage area (sq ft
6
Onsite drainage areas ft
7
Offsite drainage area (sq ft)
Total BUA in prolect (sq ft) i
New BUA on subdivided lots (subject to
ft
8
170952 sf
9permitting)
10permitting)
New BUA not on subdivided lots (subject to
s
n/a
11
Offsite BUA_(sq TL ______.
170952 sf
170952 sf
12
Breakdown of new BUA not on subdivided lots:
- Parking s ft
65074 sf
65074 sf
-Sidewalk ft)
925 sf
925 sf
- Roof Csq ft
104953 sf
104953 sf
- Roadway ft
- Future ft
- Other, please specify in the comment box
below ft
13
New infiltrating permeable pavement on
subdivided lots ft
14
New infiltrating permeable pavement not on
subdivided lots ft
13016 sf
15
Existing BUA that will remain (not subject to
ermittin�c�q�__
16
Existin BUA that is alread erm17
Existin BUA that will be remove13016
Ift
Percent BUA
Desi n storm inches
sf
18
84%
19
1.0 in
16833 cf
20
Desi n volume of SCM cu ft
Calculation method for design vo
INFORMATION
21
Simple Method
DDITIONAL
22 1drainage
Please use this space to provide any additional information about the
area(s):
rainage area for pre -post development analysis is the drainage area to the
oposed wet pond. The existing drainage patterns do not change with
spect to the site drainage outfall (lowest point on property). All new
ipervious will drain to wetpond; remaining area on property that does not

I'M I rvINIIJ
Drainage area number
1
2iMinimum
required treatment volume (cu ft)
�13651 cf
MW
MDC FROM 02H .1050
3
Is the SCM sized to treat the SW from all surfaces at build -out?
Yes
4
Is the SCM located awa from contaminated soils?
Yes
5
What are the side slopes of the SCM H:V)?
3:1
6
Does the SCM have retaining walls, gabion walls or other
en ineerad 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
design volume?
No
9
What is the method for dewatering the SCM for maintenance?
Pum (preferred)-
1 o
If applicable, will the SCM be cleaned out after construction?
Yes
11
Does the maintenance access comply with General MDC (8)?
Yes
12
Does the drains a easement comply with General MDC (9)?
Yes
13
If the SCM is on a single family lot, does (will?) the plat comply with
General MDC 10 ?
WA
14
Is there an O&M Agreement that complies with General MDC (11)?
Yes
15
Is there an O&M Plan that complies with General MDC (12)?
Yes
16
Does the SCM follow the device specific MDC?
Yes
17
Was the SCM desi nod by an NC licensedprofessional?
Yes
ET POND
MDC FROM 02H .1053
18
Sizing method used
SA/DA
19
Has a stage/storage table been provided in the calculations?
Yes
20
Elevation of the excavated main pool depth (bottom of sediment
Lem oval fmsl)
183.00
21
Elevation of the main pool bottom (top of sediment removal) (fmsl)
185.00
22
Elevation of the bottom of the vegetated shelf (fmsl)
191.00
23
Elevation of the permanent pool (fms
192.00
24
Elevation of the top of the vegetated shelf (fmsD
193.00
256Elevation
of the temporary pool (fmsl)
193.36
26
Surface area of the main permanent pool (square feet)
10035
27
Volume of the main permanent pool (cubic feet)
22545 cf
28
Avers a depth of the main pool (feet)
3.18 ft
29
Average depth equation used
Equation 3
30
If using equation 3, main pool perimeter (feet)
549.5 ft
31
If using equation 3, width of submerged veg. shelf feet
500.4 ft
32
Volume of the foreba cubic feet
3959 cf
33
Is this 15-20% of the volume in the mainpool?
Yes
34
Clean -out depth for forebay (inches)
12 in
W
Design volume of SCM cu ft
16833 cf
36
Is the outlet an orifice or a weir?
Orifice
37
If orifice, orifice diameter inches
1.5 in
38
If weir, weir height inches
39
If weir, weir length (inches)
40
Drawdown time for the tempos pool (days)
2.4
41
Are the inlet(s) and outlet located in a manner that avoids short-
circuitin ?
Yes
42
Are berms or baffles provided to improve the flow path?
Yes
43
Depth of forebay at entrance inches
60 in
44
Depth of forebay at exit inches
12 in
45
Does water flow the forebay in a non -erosive manner?
Yes
46
_out _of
Width of the vegetated shelf feet
12 ft
47
Slope of vegetated shell H:
6:1
48
Does the orifice drawdown from below the top surface of the
permanentpool?
Yes
49
Does the pond minimize impacts to the receiving channel from the 1-
r, 24-hr storm?
Yes
50
Are fountains proposed? (If Y, please provide documentation that
MDC is at
No
51
Is a trash rack or other device provided to protect the outlet system?
Yes
52
Are the dam and embankment planted in non -clumping turf grass?
Yes
53
Species of turf that will be used on the dam and embankment
Bermudagrass
54
Hasa planting plan been Erovided for the vegetated shelf?
Yes
DDIT
FONAL INFORMATIO
Please use this space to provide any additional information about
the wet pond(s):
arm is used to direct inflow to shallow end of foreba , away from outlet