SW3231104_Supplement-EZ Form_20240318

SUPPLEMENT-EZ COVER PAGE
FORMS LOADED
PROJECT INFORMATION
1 Project Name Holy Spirit Catholic Church
2 Project Area(a) Tm _ 7.76
3 Coastal Wetland Area(ac) 0
4 Surface Water Area(ac) _ 0
_ 5 Is this_project High or Low Density? High
�6 Does this project use an off-site SCM? No
COMPLIANCE WITH 021-1.1003 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(4)(c-c9? N/A
10 Is streambank stabilization proposed on this project? No
NUMBER AND TYPE OF SCMs:
11 Infiltration stem____
12 Bioretention Cell
13 Wet Pond
14 Stormwater Wetland
15 Permeable Pavement
16 Sand Filter 1
17 Rainwater Harvesting(RWH)
18 Green Roof
19 Level Spreader-Filter Strip(LS-FS1_______~~
20 Disconnected Impervious Surface(DIS)
21 Treatment Swale
22 Dry Pond
23 StormFilter
24 Silva Cell
25 Baytlter
26 Filterra
FORMS LOADED
DESIGNER CERTIFICATION
27 Name and Title: David Lutz,PE I Partner
28 Organization: _ CES Group Engineers,LLP
29 Street address: 3525 Whitehall Park Dr.,Suite 150
30 City State,Zip: Charlotte,NC 28273
31 Phone numbers:_ 704-489-1500
32 Email: [e-mail]
Certification Statement: <J
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
Signature of Designer
Sea! Date

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? Yes
FORMS LOADED
DRAINAGE AREA INFORMATION Entire Site 1
4 T pe of SCM N/A Sand Filter
5 Total BUA from project (sq ft)
6 1995 rules 0
SL 2006-246 33884 sf
2008 rules IIIIIIIIIIIIIMIIII 0
MI 2017 rules 111111111111111111/ 0
INew BUA on subdivided lots (subject to
permitting) (sq ft) N/A
1995 rules
SL 2006-246
2008 rules
MI 2017 rules
New BUA not on subdivided lots (subject to illrl
8 permitting) (sf)
1995 rules
SL 2006-246
III 2008 rules
2017 rules 42782 sf
9 Offsite - total area (sq ft) aNIIIIIIIIIIIIIIIIIIIMIIIIIIIIII.am
1995 rules
SL 2006-246
_ 2008 rules
2017 rules
10 Offsite BUA (sq ft)
111111111111
1995 rules
SL 2006-246
2008 rules
I2017 rules
Design storm (inches) 1 in
1995 rules
SL 2006-246
I2008 rules
2017 rules
Breakdown of new BUA:
- Parkin• s• ft 36659 sf
- Sidewalk s• ft 3439 sf

- Roof(sq ft) _
- Roadway(sqn
- Future (sq ft)
- Other, please specify in the comment box
below (sq ft)
New infiltrating permeable pavement on subdivided
13 lots (sq ft)
New infiltrating permeable pavement not on
14 subdivided lots tsq ft)
Existing BUA that will remain (not subject to
15 permitting) (sq ft) - 18466 sf
16 Existing BUA that is already permitted (sq ft)
17 Existing BUA that will be removed (sq ft) 15418 sf
18 Percent BUA 56%
19 Design volume of SCM (cu ft)
20 Calculation method for design volume
ADDITIONAL INFORMATION
Please use this space to provide any additional
21 information about the drainage area(s):

SAND FILTER
1 Drainage area number 1
2 Minimum re uired treatment volume cu ft 4848 sf
GENERAL MDC FROM 02H .1050
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)? 3:1
6 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-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 drainage easement comply with General MDC (9)? Yes
13 If the SCM is on a single family lot, does (will?)the plat comply with No
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 SHWT elevation (fmsl) 790
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, top of grate 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) 2706 cf
24 Will there be a permanent pool in the sediment chamber? No
25 Bottom of the sediment chamber(fmsl) 798.00
26 Area of the sediment chamber(square feet) 2772 sf
27 Physical depth of the sediment chamber (inches) 19 in
28 Ponding depth in the sediment chamber, above any permanent pool 19 in
(inches)
29 Elevation of top of weir between chambers (fmsl) 799.6
Sand Chamber
30 Volume that can be retained in the sand chamber (cubic feet) 5406 cf
31 Bottom of the sand chamber (fmsl) 795.50
32 Area of the sand chamber (square feet) _ 2745 sf
33 Physical depth of the sand chamber (inches) 49 in
34 Ponding depth in the sand chamber, above the sand surface 19 in
(inches)
35 Elevation of the bypass device (fmsl) 799.6
36 Type of bypass device level spreader
37 Mechanism for distributing flow over the sand surface weir
clean washed astm
38 Sand specification for sand chamber
iand..EiLter 1 c33 1:49 PM 3/15/2024

SAND FILTER
39 Depth above underdrain pipe (inches) 18 in
Will the media be maintained to drain at least two inches per hour at
40 the sand surface? Yes
41 Is at least one clean-out pipe provided at the low point of each Yes
underdrain line?
42 Will clean-out i es be ca ed? Yes
ADDITIONAL INFORMATION
43 Please use this space to provide any additional information about the
sand filter(s):
ANZISHINOIMIEMON
Sand Filter 2 1:49 PM 3/15/2024