SW3231005_Supplement-EZ Form_20240703

SAND FILTER
1 Drainage area number 1
21 Minimum required treatment volume(cu ft) 3402 sf
GENERAL MDC FROM 02H.1050
3i Is the SCM sized to treat the SW from all surfaces at build-out? Yes
4i Is the SCM located away from contaminated soils? Yes
5 What are the side slopes of the SCM(H:V)? rma
Does the SCM have retaining walls,gabion walls or other
6 engineered side sit).•s? No
7 Are the inlets,outlets,and receiving stream protected from erosion Yes
(10-year storm)?
8 Is there an overflow or bypass for inflow volume in excess of the Yes
design volume?
9 What is the method for dewatering the SCM for maintenance? Pump preferred)
10 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 drain ge easement comply with General MDC(9)? Yes
13 If the SCM is on a single family lot,does(will?)the plat comply with N/A
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 General MDC(12)? Yes
16 Does the SCM follow the device specific MDC? _ Yes
17 Was the SCM designed by an NC licensed professional? Yes
SAND FILTER MDC FROM 02H.1056 — —
18'iSHWT elevation(fmsl) 754.7 1
191Type of sand filter(open or closed;! _ Closed
20 If closed,will the filter will be pre-cast odour-in-place? neither,CMP
21 If closed,top of grate elevation(fmsl)
22 Is this sand filter designed to attenuate peak flows? Yes
Sediment Chamber
23 Volume that can be retained in the sediment chamber(cubic feet) 1844 cf
24 Will there be a permanent pool in the sediment chamber? Yes
25 Bottom of the sediment chamber(fmsl) _ 756.54
26 Area of the sediment chamber(square feet) _ 574 sf
27'Physical depth of the sediment chamber(inches) _ 18 in
28 Ponding depth in the sediment chamber,above any permanent 5 9,
,pool(inches) _
29 Elevation of top of weir between chambers(fmsl) 763.69
Sand Chamber
30 Volume that can be retained in the sand chamber(cubic feet) 615 cf
31 Bottom of the sand chamber(fmsl) 756.25
32 Area of the sand chamber(square feet) _ _ 574 sf
33 Physical depth of the sand chamber(inches) 18 in
34 Ponding depth in the sand chamber,above the sand surface 1,25 ft
(inches)
35 Elevation of the bypass device(fmsl) 759
36 Type of bypass device orifice
37 Mechanism for distributing flow over the sand surface _ baffle weir
38 Sand specification for sand chamber ASTM C-33
39 Depth above underdrain pipe(inches) 12 in
Will the media be maintained to drain at least two inches per hour at
40
the sand surface?the
41
Is at least one clean-out pipe provided at the low point of each
underdrain line? Yes
42 Will clean-out_pes be capped? Yes
ADDITIONAL INFORMATION
43 Please use this space to provide any additional information about
_- the sand filter(s):
Sand Filter 1 2:02 PM 5/31/2024

DRAINAGE 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
CLICK TO LOAD FORM

SUPPLEMENT-EZ COVER PAGE
FORMS LOADEi.
PROJECT INFORMATION
1 Project Name DKOTA-Salisbury
2 Project Area(ac) - - 1 - 3.46
3 Coastal Wetland Area(ac) - na
4 Surface Water Area(ac) _ 0.28 _
5 Is this project High or Low Density? High
6 Does this project use an off-site SCM? I No
COMPLIANCE WITH 02H.1003(4)
7 Width of vegetated setbacks provided(feet) 30
8 Will the vegetated setback remain vegetated? - Yes
9 If BUA is proposed in the setback,does it meet NCAC 02H.1003(4Xc-d)? _ N/A
10 i Is streambank stabilization proposed on this project? No
NUMBER AND TYPE OF SCMs:
11 Infiltration System I _
12 Bioretention Cell _
13 Wet Pond
14 Stormwater Wetland
15 Permeable Pavement _
16 Sand Filter 1
17 Rainwater Harvesting tRWH) _
18 Green Roof
19 Level Spreader-Filter StripjLS-FS) _
20 Disconnected Impervious Surface(DIS) -
21 Treatment Swale
22 .Dry Pond
23 _IStormFilter
~24 Silva Cell
25 Bayfilter -
26 Filterra
FORMS LOADED
DESIGNER CERTIFICATION
Name and Title:
a Kevin Caldwell,President
0 anization: Geoscience Group
29 Street address: 500 K Clanton Road
30 City,State,Zip: _ - Charlotte,NC 28217
31 Phone number(s : _704.941.2252
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.
Designer `�0041111,4
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Signat of Designer leitid
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Seal Date