SW6221202_Supplement-EZ Form_20221214

SUPPLEMENT-EZ COVER PAGE
}DR LQ DED
PROJECT INFORMATION
1 'Project Name 4
2 Project Area ac
HIES EASTOVER
6.55
3 Coastal Wetland Area ac
0
4 Surface Water Area ac
0.298
5 Is this project High or Low Density?
High
6 Does this project use an off -site SCM?
No
COMPLIANCE WITH 02H .1003(4)
7
lWidth of vegetated setbacks provided feet
20
8
lWill the vegetated setback remain vegetated? I
Yes
9 :If BUA is proposed in the setback, does it meet NCAC 02H.1003 4 c-d ?
Yes
10 !is streambank stabilization proposed on this project?
No
NUMBER AND TYPE OF SCMs:
11
Inflltration System
5
12
Bioretention Cell
13
Wet Pond
14
Stormwater Wetland
15
Permeable Pavement
5
16
Sand Filter
17
Rainwater Harvesting RWH
18 lGreen Roof
19
Level Spreader -Filter StripLS-FS
20
r2
Disconnected Impervious Surface DIS
1
.Treatment Swale
22 Dry Pond
23
StormFilter
24
Silva Cell
25
Bayfilter
26
Filterra
FCRMSLOADED
DESIGNER CERTIFICATION
27
Name and Title:
WILLIAM S CLAYTON PE
28
Organization:
CLAYTON ENGINEERING & DESIGN
29
Street address:
PO BOX 2351
30
City, State, Zip:
HICKORY NC 28603
31
Phone numbers :
828-455-3456
[e-mail]
32
Email:
Certification Sla Preen:
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.
Date

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INFILTRATION SYSTEM
1 .pralnaga _ 2 3 4 5
2 Minhnum f eed veahnent wOb4ne ar Ft 7 2 d fwcr 2562—Fr. bff39 e
3 is the SCM _W to [real the SW from .ae sMgra ms al pullp�hul? _ Np
Nq
Yes
Ne
Yes
A _
No
Yes
_ ► o
Yes
_1
{1g
_ 4 Is the SCM located away from contaminated Soils? Yes
Yes
:1
6 What am the side slopes of the SCM (H:V or enter' Verllcal'• for
.trenbhes
6 Does the SCM have reamingwalls, gabion walls or other
engineered side slopes? No
No
Yes
No
Yes
No
Yes
7 Are the inlets, outlets, and receiving stream protecled ffprri erosion
10-fir storm)? Yes
a Is theaa6 overflow or bypass for inflow volume in excess of the
design volume? Yes
Yes
Yes
Yes
_5 _
Yes
_ Yes _
Pum P.(preferred}
_ Yaas
Yes
_ Yes
Pump (preferred)
_ _ '�"
9 !ivnl)1 ie the iTW Idrdeaalerina the SCM for melnlendf14e7 lgmlp• (pfH
10 IFapplkalsla, will the SCM be 6 aned wt efler durislruEtlpn9 Ylsd
Yes
Yae
Yes
11 :2L" Ine.maintenance access aampfy with Gener4l Moll Yea
12 DOps lhe•gn, easdRwit ppnply with Eensr�IMbI; i Y9!
Yes
Yes
Yes
Yes
Yes
13 If the SCM is on a single family lot, does (will?) the plat comply with
General MDC (10)? NIA
NIA
N/A
NIA
NIA
14 Is there an 08M Agreement that complies with General MDC (11)? Yes
Yes
Yes
Yes
Yes
15 Its there an t7dM Plan 916t rpmpfies wih G4nerel MS]l; {12)T. Yes.
Yes
Yes
Yes
Yes
1B :60as the SCMfo4Yv the device specillr.M=7 Yes
17 W as M SOM d - ed an NC licensed olas5rn' P Yes
Yes
Yes
Yes
Yes
TU
Yea
Yes.
TU
19 Am iprn�eS.Or baFllas prov�gd7 NO NO
I 14
NO
NO
20 ryyo Dt PNlreatmlht (jlFler
�jl p
9r 0m _
21 Was the sail Epve5f zItftd In the IoWWItl11 and at the elevation of tha
—iNplrenun_syslem?___ Yea
Yea
Yes
Yes
Ye>s
_
22 :SFIVVTeleva0unifmal 130.09
23 •Dapth 10 SHW 1 ply soli faliodl fkt) 4,67
13OA2
130.OH
130.00
126.6;
498
4.6T
3,00
4.37
24 Ground elewalibn 91 hoNN in soils rspbrl (fnW) 134.75
25 Is a detailed hydrogeologic study attached if the separation is
between 1 and 2 feel? NIA
135.40
134.75
133.00
1333
NIA
N/A
NIA
NIA
2r, Sul inflltrahan rAW.(leMr) 0.05
0.05
0.0
0.05
0.05
29 Button elnyahori. (rms0
1W ft I
433 .
1>!$
131 R
131 n
L. ISlorage elevation ffmsl(
_
134:iS 0
135
134.75
133. h
133.0
31 5yPasielpwallon }®msl(
133
133fl
13T'n
13111
catftll Oar
32 EWidm siefacaarea(fill
I 906.t1
16M Ct
O00 n
u(M n
3300 it
33 S!Graae eldbe
surtaco errra lOnM
h
1625. It
800. It
Do-
1400. f1
3300. fl
r s Tmene�vallDo
94 •Lengln (fIj
=11
3s 01)
36 Perforated pipe diameter, if applicable (inches)
37 Number of laterals
36 Total length of perforated piping
39 $Iona lype, it appbt ble
40 :Slone porosity (%
41 1 Is stone free of fines?
42 Is the stone wrapped in geolextile fabric?
43 Has 31 least litre Ins !LRn por. been peRridpdT
Mini?
44 Design volume of 5CM (cu fft _ _ 2250 cf _ 2973df 14" C 258201 drw ctmr51!MIX
65 71ma W Trs
30MONAL INFOPAPI ON — —
46 Please use this spoca to provide any addilmnal Irdormabun about
. the Irdiilralion system (yj,
Infiltration i S =e au 1 ]MI%N]

PERMEABLE PAVEMENT
1 Drainage area number
1 1
2
3
4
5
2i Minimum required treatment volume cu ft
2250 cf
2973 cf
1464 cf
2562 cf
6039 cf
3:Area of permeable pavement to be installed (square feet
966 ft
1625 ft
800 ft
1400 ft
3300 ft
4 Area of screened roof runoff that is directed to pavement (square
feet
12000 sf
52000 sf
9150 sf
32000 sf
21350 sf
5 Area of additional built -upon area runoff that is directed to pavement 3000 sf
s uare feet I
7200s f
3000 sf
6000 sf
4000 sf
6 Area of incidental, unavoidable runoff from adjacent stable pervious sf
areas (square feet
sf
sf
sf
sf
�uuveruu muL rnum men .mmu.
7' Is the SCM sized to treat the SW from all surfaces at build -out?
No
No
No
No
No
811s the SCM located away from contaminated soils?
Yes
Yes
Yes
Yes
Yes
9 What are the side slopes of the SCM (H:V)?
N/A
N/A
N/A
N/A
N/A
10
Are the inlets, outlets, and receiving stream protected from erosion
10- ear storm)? Yes
Yes
Yes
Yes
Yes
11
Is there an overflow or bypass for inflow volume in excess of the Yes
design volume?
Yes
Yes
Yes
Yes
12'What
is the method for clewatering the SCM for maintenance? Pump (preferred)
Pump (preferred)
Pump referred
Pump (preferred).Pump
(preferred)
13
If applicable, will the SCM be cleaned out after construction? Yes
Yes
Yes
Yes
Yes
14
Does the maintenance access comply with General MDC 8 ? Yes
Yes
Yes
Yes
Yes
15
Does the drains a easement comply with General MDC 9 ?
Yes
Yes
Yes
Yes
Yes
16
If the SCM is on a single family lot, does (will?) the plat comply with
General MDC 90?
N/A
N/A
N/A
N/A
N/A
17
Is there an O&M Agreement that complies with General MDC (11)?
Yes
Yes
Yes
Yes
Yes
181
Is there an O&M Plan that complies with General MDC 12 ?
Yes
Yes
Yes
Yes
Yes
19 1
Does the SCM follow the device specific MDC?
Yes
Yes
Yes
Yes
Yes
201Was the SCM desi ned by an NC licensedprofessional? Yes
Yes
Yes
Yes
Yes
flT- exnM V8Vtment muL rKwm ozn 4955
21
Is this a detention or infiltration permeable pavement system?
Detention
Detention
Detention
Detention
Detention
22
Design volume of SCM cu ft
Detention
Detention
Detention
Detention
Detention
23
Proposed slope of the subgrade surface %)
0%
0%
0%
0%
0%
241Are
terraces or baffles provided?
Ne
Ne
Ne
NO
No
25
SHWT elevation fmsl
[ 130.00
130.42
130.00
130.00
128.63
26
Storage elevation of the design rainfall depth fmsl
134.75
135.4
134.75
133
133
27
Will toxic pollutants be stored or handled on or near the permeable
pavement?
No
No
No
No
No
28
Does the proposed pavement surface comply with .1055(6)?
Yes
Yes
Yes
Yes
Yes
29
Will runoff from pervious surfaces be directed away from the
pavement?
No
No
No
No
No
30
Maximum adjacent area directed to a single point onto the
permeable pavement (sq ft
15000 sf
59200 sf
12150 sf
38000 sf
25350 sf
31
Has at least one observation well per terrace been provided at the
low oint s ?
Yes
Yes
Yes
Yes
Yes
32
Have edge restraints beenprovided?
Yes
Yes
Yes
Yes
Yes
33
Will the subgrade be graded when dry?
Yes
Yes
Yes
Yes
Yes
34
Will the permeable pavement be protected from sediment during
construction?
Yes
Yes
Yes
Yes
Yes
35
Will an in -situ permeability test be conducted after site stabilization? Yes
Yes
Yes
Yes
Yes
iror inr7n vnu ravemenr aysmms
36:Was the soll investigated in the footprint and at the elevation of the
:subgrade?
Yes
Yes
Yes
Yes
Yes
37 Soil infiltration rate in/hr
.050 in/hr
.050 in/hr
.050 in/hr
.050 in/hr
.050 in/hr
38 Is a detailed hydrogeologic study attached if the separation is
between 1 and 2 feet?
No
No
No
No
No
391 Is additional media bein2 added to the soilprofile?
I Yes
Yes
Yes
Yes
Yes
401Proposed slope of the subgrade surface %
0%
0%
0%
0%
0%
41 Top of the subgrade bottom of the a re ate) fmsl)
132.92
133.57
132.92
131.17
131.17
42, Drawdown time (hours)
hrs
hrs
hrs
hrs
hrs
ror uerennon ravemenr a rems
43. Drawdown time hours 32 hrs 32 hrs 32 hrs 32 hrs 32 hrs
Aonreslate
44 A r ate depth in 18 in
19 in
18 in
18 in
18 in
45 Aggregate porosity %) 40
40
40
40
40
46. Size of aggregate to be used in the subbase CLASS 4
CLASS 5
CLASS 6
CLASS 7
CLASS 8
47 WIII the aggregate be washed?
Yes
Yes
Yes
Yes
Yes
ADDMONAL INFORMATION
48
Please use this space to provide any additional information about
the permeable pavement cvStamW—
Permeable Pavement 1 9:36 AM 12/5/2022