SW6210503_Supplement-EZ Form_20211222

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FORMIv , LOADED
3ROJECT INFORMATION
1_ Protect Name
2 Project Area_Cac)
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?
OOMPLIANCE WITH 02H.1003(4)
7 Width of vegetated setbacks provided (tee}
8 Wili the vegdated setback remain vegetated?
9 1 If BUA is proposed in the setback, does it met
10 Is streambank stabilization proposed on this F
Townsend Estates
27.2
0
High
No
NY
Yes
No
NUMBER AND TYPE OF SCMs.
1 infiltration System
12 Bioretention Cell
13 Wet Pond
14 Stormwater Wetland
15
: Permeable Pavement
18
Sand Filter
17
Rainwater Harvesting
8 �-
18
Green Roof
j
L
---
19 Leval Spreader -Piker Stt1p (LS-FS)
20 Disconnected Impervious Surface (DID
21 Treatment Swale
_
22
Dry Pond
23
StormFiker
24
Silva Cell
25
Bayfilter
26
_
Fikerra
FORMS LOADED
DESIGNER CERTIFICATION
27 i Name and Tide:
28 Organization: _
29 Street address:
C. Scott Brown PE
4D_Site Solutions Inc.
409 Chicago Dove Ste. 112
30 City, State, Z!p: _
31 Phone number(s):
32 [Email:
Fayetteville, NC 28306
910-426-6777
[e-mail]
Certification Statement:
I certify, under penalty of taw 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
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Date

DIN111-kE AREAS
1 Is this a high density project? Yes
2 If so, number of drainage areas/SCMs 1
3 Does this project have low density areas? No
4 If so, number of low density drainage areas 0
Is all/part of this project subject to previous rule
5 versions? No
FORMS LOADED
DRAINAGE AREA INFORMATION
Entire Site
1 —
4
TypeofSCM
_Wet Pond
vVet Pond_
5
Total drainage area ft
1184832
7 -51826
Onsite draina a area ft
1184832
735826
7
186
Offsite drainage area (sq ft) _ _
0
0 _ _
Total BUA in project (sq ft)
371122 sf
344472 sf
New BUA on subdivided lots (subject to
9
permitting) ft)
250100 sf
223450 sf
New BUA not on subdivided lots (subject to
10
perming) (sf)
itt
121022 sf
121022 sf
11
Offsite BUA (sq ft) _
sf
sf
12 Breakdown of new BUA not on subdivided lots:
- Par (sq ft)
Sidewalk (sq ft) ( 15433 sf 15433 sf
- Roof (sq ft)
_- Roadway (sq ft) 90844 sf 90844 sf
- Future ft
- Other, please specify in the comment box
below (sa ft) 14745 sf 14745 sf
New infiltrating permeable pavement on
13 subdivided lots (sq sf
New infiltrating permeable pavement not on
14 subdivided lots (sq ft) _ sf
Existing BUA that will remain (not subject to
15 permitting) (sq ft j sf
16 Existing BUA that is already permitted (sq ft_ sf
17 Existing BUA that will be removed (sq ft) 60588 sf
18 Percent BUA
19 Design storm (inches)
20 Design volume of SCM (cu ft) E_
21 Calculation method for design volume
ADDITIONAL INFORMATION
Please use this space to provide any additional information about the
BUA is the surface of the pond.
17I
sf
60588 sf
47%
1.0 in
28890 cf

IFAVIET POND
11Drainage area number
2 Minimum required treatment volume (cu ft)
SENERAL MDC FROM 02H .1050
1
28890 cf
3 Is the SCM sized to treat the SW from all surfaces at build -out? Yes
4 Is the SCM located away from contaminated soils? Yes
5,What are the side slopes of the SCM (H:V)? 3A
6TDoes
the SCM have retaining walls, gabion walls or other engineered'
No
7'Are
the inlets, outlets, and receiving stream protected from erosion
Yes
10-year stormy _ __ _
_
8
Is there an overflow or bypass for inflow volume in excess of the
�
Yesdesi
n volume?
What is the method for dewatering the SCM for maintenance?
ff a licable, will the SCM be cleaned out after construction?
Does the maintenance access comply with General MDC (8)?
Does the drainage easement comply whh General MDC (9).?
Pump (preferred)
Yes
Yes
_Yes _.
9
10
111
— 12
13
If the SCM is on a single family lot, does (will?) the plat comply with
NfA
General MDC 10 ?
14
Is there an O&M Agreement that complies with General MDC (11)?
Yes
15 Is there an O&M Plan that complies with Genera_ I MDC 12 ?
Yes
Yes
16 Does the SCM follow, the device specific MDC?
Yes
17; Was the SCM designed by_an NC licensed professional?
NET PC IND MDC FROM 02H .1053
18 Sizing method used
19 Has a stage/storage table been provided in the calculations?
20 Elevation of the excavated main pool depth (bottom of sediment
removal) (fmsl)
21 Elevation of the main pool bottom (top of sediment removal) (fmsl)
22, Elevation of the bottom of the vegetated shelf fmsl
23 Elevation of the permanentpoatift")_
. �24 Elevation of the top of the vegetated shelf fmsl)
25 ----
!Elevation of the tempora�r r pool (fmsl
_26 Surface area of the main permanent pool (square feet
27 Volume of the main permanent pool (cubic feet
28 Average depth of the main pool (feet)
29 Avera a depth equation used
30 If using a u_ation_3, main pool perimeter (feet)
31 If using equation 3 width of submerged veg. shelf feet
32 Volume of the forebay (cubic feet)
33 Is this 15-20% of the volume in the main pool?
an -out de _34 Clepth for forebay inches
__35 Design volume of SCM (cu ft)
36 Is the outlet an orifice or a weir?
_37 If orifice, orifice diameter (inches)
_ 38 If weir, weir heightinches)
39 If weir, weir ien inches
40 Drawdown time for the temporary pool (days) �+
41 Are the inlet(s) and outlet located in a manner that avoids short-
___ circuiting?-
_42 Are berms or, baffles provided to improve the flow path?
43 Depth of forebay at entrance inches)
44; Depth of forebay at exit (inches) V
45 Does water flow out of the forebay in anon -erosive manner?�
48 jWidth of the vegetated shelf (feet)
47 Slope of vegetated shelf (H: V) a
, � Does the orifice drawdown from below the top surface of the
Does the pond minimize impacts to the receiving channel from the 1-
Are fountains proposed? (If Y, please provide documentation that
50 MDC(9) is mew----_---- -- --
51 Is a trash rack or other device provided to protect the outlet system?
52 Are the dam and embankment planted in non -clumping turf grass?
53 Species of turf that will be used on the dam and embankment _
54 Has _planting plan been provided for the vegetated shelf?
ADDITIONAL INFORMATION
Please use this space to provide any additional information about the
551wet pond(s):
Orifice is 1.8". spreadsheet rounds.
SAIDA
Yes
200.00
201.00
205.00
205.50
206.00
40789 of
3.40 ft
°auation 2
7878 cf
Yes
54 in
28890 cf
Orifice
4_9
Yes
No
6 ft
6:1
Yes
Yes
No
Yes
Yes
Yes
Wet Pond 3 12:38 PM 12/3/2021