SW3230601_Supplement-EZ Form_20231127

SUPPLEMENT-EZ COVER PAGE
FORMS LOADED
PROJECT INFORMATION
t Project Name Denver Fitness Facility _
2 Project Area ac 3.568
3 Coastal Wetland Area ac 0
4 Surface Water Area ac 0
5 Is this pLoject High or Low Density? High
6 I Does this project use an off-site SCM? No
'COMPLIANCE WITH 02H.1003(4)} "j
7 Width of vegetated setbacks provided(feet) 507 N/A
8 Will the vegetated setback remain vegetated? N/A
9 If BUA is proposed in the setback,does it meet NCAC 02H.1003 4 ad? NIA
10 Is streambank stabilization proposed on this project? No
NUMBER AND TYPE OF SCMs:
11 Infiltration System
3 12 Bloretention Cell
13 Wet Pond i
14 Stormwater Wetland
15 Permeable Pavement
16 Sand Filter 1
17 Rainwater Harvestin RWHi
18 Green Roof
19 Level spreader-Filter Strip(LS-F5
20 Disconnected Impervious Surface DI5
21 Treatment Swale
22 Dry Pond
23 StormFilter
24 Silva Cell
25 Bayfilter
26 Filterra
FORMS LOADED
DESIGNER CERTIFICATION
27 'Name and Title: J.David Ledford,Registered Landscape Architect
28 O anization: J.David Ledford,RLA
29 Street address: 2730 Maiden Hi hwa _
30 City,State,Zip: LHncointon,NC 28092
31 Phone numbers: 704-530-7880
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.
Desiqner
9
Signat a of Designer
�t �S2�
+ Date
1# !

DRAINAGE AREAS
1 Is this a hi h density project? Yes
2 If so,number of drains a areaslSCMs 1
3 Does this promect have low density areas? No
4 If so,number of law density drainage areas 0
Is alllpart of this project subject to previous rule
5 versions? No
FORMS LOADED
DRAINAGI;AREA:INFORMATION Entire Site 1
4 T e of SCM Sand Filter
5 Total drainage areas ft 186,807 181,595
6 Onsite drains a area(sq ft 155,422 151,210
7 Offsite drainage areas ft 30,385 30,335
8 Total BUA in pLoject(sq ft 133596 sf 133596 sf
New BUA on subdivided lots(subject to permitting)
9 ft sf sf
New BUA not on subdivided lots(subject to
10permitting) s sf sf
11 Offsite BUA s ft 30385 sf 30385 sf
12 Breakdown of new BUA not on subdivided lots:
Parking(sq ft 60095 sf 60095 sf
Sidewalk(sq ft 6065 sf 6065 sf
Roof(sq ft 26829 sf 26829 sf
Roadway s ft sf sf
Future(sq ft sf sf
Other,please specify in the comment box
below(sq ft 10222 sf 10222 sf
New infiltrating permeable pavement on
13 subdivided lots(sq ft sf sf
New infiltrating permeable pavement not on
14 subdivided lots s ft sf sf
Existing BUA that will remain(not subject to
15permitting) s ft I sf sf
16 Existinq BUA that is already ermitted s ft sf sf
17 Existin BUA that will be removed(sq ft sf sf
18 Percent BUA 72% 74%
19 Desi n storm inches 1.0 in
20 Design volume of SCM cu ft 8730 cf
21 Calculation method for design volume Simple Method
DLJIY_ jONAL INFORMATION
Please use this space to provide any additional information about the
22 1drainage area(s):
#12-Other BUA SF is for Imperious Areas of Proposed Pickle Ball Courts.

SAND FILTER
1 Draina a g area number 1
2 Minimum required treatment volume(cu ft) 7,607 cu ft
ERAl.t�t�e�l;arw Dz�a.1ps0
3 Is the SCM sized to treat the SW from al}surfaces at build-out? Yes
f54
Is the SCM located away from contaminated soils? Yes
What are the side slopes of the SCM(H_V)? 3:1
Does the SCM have retaining walls,gabion walls or other engineered No
side slopes?
7 Are the inlets,outlets,and receiving stream protected from erosion Yes
(10- ear storm)?
a 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( referred)
10 If applicable,will the SCM be cleaned out after construction? Yes
11 noes the maintenance access comply with General MDC(8)? Yes
12 Does the drainage easement comply with General MDC(9)? Yes
13 If the SCM is on a single family lot,does(will?)the plat comply with NIA
General MDC 10?
14 Is the 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 5CM designed k an NO licensed rofessional? Yes
MD FIMR get,FROM 08H.
18 SHWT elevation(fmsl) 791-00,
19 Type of sand filter(open or closed) Open
20 If closed,will the filter will be pre-cast or pour-in-place? _
21 If closed,to of rate elevation fmsl
22 Is this sand filter designed to attenuate peak flows? No
Sediment Chamber
23 Volume that can be retained in the sediment chamber(cubic feet) 4387 cf
24 Will there be a permanent pool in the sediment chamber? No
25 Bottom of the sediment chamber fmsl 796.50'
26 jArea of the sediment chamber(square feet) 2116 sf
27 Physical depth of the sediment chamber Qnches 42 in
28 Ponding depth in the sediment chamber,above any permanent pool N/A
291 Elevation of top of weir between chambers fmsl) 800.00'
Sand Chamber
30 Volume that can be retained in the sand chamber cubic feet 4343 cf
31 Bottom of the sand chamber fmsl 796.50'
32 Area of the sand chamber(square feel 2019 sf
33 Physical depth of the sand chamber inches 42 in
34 Ponding depth in the sand chamber,above the sand surface
finches) 42 in
F
evation of the bypass device(fmsl 800.00`
T pe of b ass device Open Box Weir
Mechanism for distributing flow over the sand surface Rip Rap Dissipator
Sand s ecification for sand chamber i ASTM C33
De th above underdain pi inches) IT
Will the media be maintained to drain at least two inches per hour at Yes
the sand surface?
41 Is at least one clean-out pipe provided at the low point of each i Yes
underdrain line?
42 Will clean out pipes be capped? Yes
r..,._ - _
ADDITIONAL INFORMATION
43 Please use this space to provide any additional information about the
sand filters.
#25&032:Square Foot Area at Vt tap elevation.
#36:In addition to the primary by-pass of the open box weir,an additional
emergency spillway has been designed to pass the 10 yr.storm event as a
backup or for additional flow from larger storm events.
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