SW6241006_Supplement-EZ Form_20241118

SUPPLEMENT-EZ COVER PAGE
FORMS LOADED
PROJECT INFORMATION v
1 1 Project Name Fayetteville Cumberland Road Dollar General
t2 {Project Area(ac) 0.83 i
i 3 ;Coastal Wetland Area(ac) )
( 4 Surface Water Area(ac) I
5 ,Is this project High or Low Density? High
(, 6M, Does this project use an off site SCM? No i
COMPLIANCE WITH 02H 1003(4)
1 7 Width of vegetated setbacks provided(feet) 30'
8 Will the vegetated setback remain vegetated? N/A I
9 If BUA is proposed in the setback,does it meet NCAC 02H 1003(4)(c d)? 1
10 Is streambank stabilization proposed on this project?
NUMBER AND TYPE OF SCMs: •
11 Infiltration System 1 )
1 12 :Bioretention Cell
13 ;Wet Pond y
14 !Stormwater Wetland )
115 Permeable Pavement I
16 Sand Filter
r 17 Rainwater Harvesting(RWH) I
6 18 Green Roof
I 19 Level Spreader-Filter Strip(LS-FS) II
I
20 i Disconnected Impervious Surface(DIS)
21 Treatment Swale $
t
22 Dry Pond
23 StormFilter I
r 24 Silva Cell r
$ 25 'Bayfilter
i 26 Filterra
FORMS LOADED
DESIGNER CERTIFICATION og
27 Name and Title: C.Scott Brown, PE-Vice President I
28 Organization: 4D Site Solutions, Inc
i 29 Street address: 409 Chicago Drive,Suite 112 ;
30 ;City,State,Zip Fayetteville, NC 28306 I
31 Phone number(s): 910-426-6777 i
t 32 ','Email [e-mail] i
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.
Designer
'-�`\ CAR0
: {'' . b\- - % -- °I1(1 )/LA‘A--
SEAL
Signature of Designer
027452
0S n✓G I NEB,•. '
''i'ii,„,,,,, ,s 10-f S-2,1(
,��—OTT N3 �I0.\5-2.ii
Seal Date

DRAINAGE AREAS
r 1 ils this a high density project? , Yes
I
2 i 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
L 5 !versions? No i
FORMS LOADED
Entire Site 1
DRAINAGE AREA IN MAFORTION
) 4 ;Type of SCM Infiltration basin
5 !Total drainage area(sq ft) 66 002 35949
6 1Onsite drainage area(sq ft) k 66,002 35949
7 ,Offsitedrainage area(sq ft)
8 Total BUA in project(sq ft) 31462 sf
New BUA g}i subdivided lots(subject to
g
F
9 ;permttin ft)
) ':New BUA not on subdivided lots(subject to
H0 permitting)(sf) $ 32670 sf 31462 sf ._. t
11 jOffsite BUA(sq ft)
$
K 5 I
112 Breakdown of new BUA not on subdivided lots: , '
(
92
Parkin (sq ft 214 sf 20716 sf
Sidewalk(sq ft) .
( Roof leg ft) 6 sf 10746 sf
-Roadway(sq_ft)
-Future(sq ft) /
i -Other, please specify in the comment box i
below ft R
1$q )
New infiltrating permeable pavement on 2
} 13 !subdivided lots(sq ft) t
!New infiltrating permeable pavement not on
14 ;,subdivided lots(sq ft)
1- J ;
$ ,Existing BUA that will remain(not subject to ( g
15 ;-permitting)(sq ft) i .
16 !Existing BUA that is already permitted(sq ft)
17 ,Existing BUA that will be removed(sq ft)
18 yPercent BUA 50% 88%
, 19 !Design storm(inches) 1.0 in 1.0 in
a 20 Apesign volume of SCM(cu ft) 3572 cf
21 !Calculation method for design volumme�Nrt Simple method
ADDITIONAL INFORMATION aa »
, Please use this space to provide any additional information about the a
(22 drainage area(s): t.
i
g
L !

INFILTRATION SYSTEM
1 1Drainage area number , 1
2 I Minimum_rmired treatment volumelcu ft),___ „,,,,,m_ ,,,,:i, ,,,,,,m2;.50.9 cf..._ ,
GENERAL MDC FROM 02H.1050
101.0911MMIMAMINSWOR*11M01.4001.I.M.VAISM.Y...11,..RMOV.M,MP,111,rt..,,51.0411.5PIV.WItMPOttftiNg.....3.51M0,"
3 I Is the SCM sized to treat the SW from all surfaces at build-out? I Yes
4 i Is the SCM located away from contaminated soils? Yes
[What are the side slopes of the SCM(H:V or enter'Vertical"for I t
I ................ trenches)? ,
t 3:1
I
i 6 :Does the SCM have retaining walls,gabion walls or other 0
t
I engineered side slopes? .
t - - -7 No
IAre the inlets,outlets,and receiving stream protected from erosion ; i
k
10-year storm)? ,1 Yes Is there an overflow or bypass for inflow volume in excess of the 1- 1
8 Idesign volume?
9 IWhat is the method for dewatering the SCM for maintenance? I Pump(preferred)
10 i If applicable,will the SCM be cleaned out after construction? Yes
--
11 i Does the maintenance access comply with General MDC(8)? Yes
--,
12 ;Does the drnage easementNy ai com with General MDC(9)?
Yes
,
.t..
,
--e-
4 .
13 If the SCM is on a single family lot,does(will?)the plat comply with I
'General MDC(10)? N/A
I ,
14 Is there an O&M Agreement that complies with General MDC(11)?
--I
Yes
1; 15 :Is there an O&M Plan that complies with General MDC(12)? Yes
.
16 IDoes the SCM follow the device specific MDC? Yes
17 1,Aras the SCM desi ned b_LELN,2„,licIrm_dszaftsslonal? , Yes
INFILTRATION SYSTEM MDC FROM 02H.1051
18 rproposed slope of the subgrade surface(%); 0%67
19 IAre terraces or baffles provided? , No
20 IType of pretreatment: A- Forebay t
Soils Data
1 0 21 Was the soil investigated in the footprint and at the elevation of the:„
infiltration system? Yes
22 1SHWT elevation(fmsl)
179.07
3
I.
:
2 !Depth to SHVVT per soils report Orly
128,00
0
i24 Ground elevation at boring in soils report(fmsl) 189.74 .1
i I Is a detailed hydrogeologic study attached if the separation is
N/A
.
0 25 I between 1 and 2 feet? ;
I 1
26 I Soil infiltration rate(in/hr) 5 24
27 'Factor of safety(FS) (2 is recommended):
Elevations l 29 [Bottom elevation fmsl) 186 ft
30 Storage elevation(fms1)
3111Sypass elevation(fmsl) .
For Basins Only
32 [Bottom surface area(ft2) 2.00
:
r
I
188.77 ft
189 ft
744 ft 1
' 33 [Storage elevation surface area:(ft2)
For Trenches Only
34 j Length(ft) ; 2075.ft
•
-I
1 35 IWidth(ft) I i
, 36 I Perforated pipe diameter,if applicable(inches) 0
0 37 I Number of laterals 1„
38 ITotal length of perforated piping
t i
39 'Stone type if applicable
ao 1_stone porosity.go)
41 _i Is stone free of fines?
42 Ils the stone wrapped in geotextile fabric?
43 I Has at least one inspection port been provided?
Volumes/Drawdown
44 IDesign volume of SCM(cu ft) .
;
45 Time to draw down(hours) „..„. i
L
3572 cf
11 hrs
ADDITIONAL INFORMATION
46 :;Please use this space to provide any additional information about t
the infiltration system(s): r
t
1
1 1
1 t
I: 1
0
Infiltration 1 11:02 AM 10/15/2024