SW5200602_Supplement-EZ Form_20200622

SUPPLEMENT-EZ COVER PAGE
FORMS LOADED
1 Project Name Wake Electric
2 Project Area (ac)30
3 Coastal Wetland Area (ac)
4 Surface Water Area (ac)36.5
5 Is this project High or Low Density?High
6 Does this project use an off-site SCM?No
7 Width of vegetated setbacks provided (feet)25
8 Will the vegetated setback remain vegetated?Yes
9 Is BUA other that as listed in .1003(4)(c-d) out of the setback?Yes
10 Is streambank stabilization proposed on this project?No
11 Infiltration System 0
12 Bioretention Cell 0
13 Wet Pond 0
14 Stormwater Wetland 0
15 Permeable Pavement 0
16 Sand Filter 1
17 Rainwater Harvesting (RWH)0
18 Green Roof 0
19 Level Spreader-Filter Strip (LS-FS)0
20 Disconnected Impervious Surface (DIS)0
21 Treatment Swale 0
22 Dry Pond 2
23 StormFilter 0
24 Silva Cell 0
25 Bayfilter 0
26 Filterra 0
FORMS LOADED
27 Name and Title:Jeff Rice, PE
28 Organization:Stantec
29 Street address:2127 Arysley Town Blvd. Suite 300
30 City, State, Zip:Charlotte, NC 28273
31 Phone number(s):704-329-0900
32 Email:[e-mail]
Certification Statement:
Designer
______________________________________________
Signature of Designer
______________________________________________
Date
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.
PROJECT INFORMATION
NUMBER AND TYPE OF SCMs:
DESIGNER CERTIFICATION
COMPLIANCE WITH 02H .1003(4)
Seal
06/10/2020
DRAINAGE AREAS
1 Is this a high density project?Yes
2 If so, number of drainage areas/SCMs 2
3
Is all/part of this project subject to previous rule
versions?Yes
CLICK TO LOAD FORM
Entire Site 1
4 Type of SCM
dry ponds /
sandfilter
dry pond /
sandfilter
5 Total BUA in project (sq ft)619253 sf 202015 sf
6
New BUA on subdivided lots (subject to
permitting) (sq ft)
7
New BUA outside of subdivided lots (subject to
permitting) (sf)183124 sf 114577 sf
8 Offsite - total area (sq ft)285054 sf
9 Offsite BUA (sq ft)54754 sf
10 Breakdown of new BUA outside subdivided lots:
- Parking (sq ft)
- Sidewalk (sq ft)
- Roof (sq ft)14385 sf 7186 sf
- Roadway (sq ft)22241 sf
- Future (sq ft)

- Other, please specify in the comment box
below (sq ft) 146498 sf 107391 sf
11
New infiltrating permeable pavement on
subdivided lots (sq ft)
12
New infiltrating permeable pavement outside of
subdivided lots (sq ft)
13
Exisitng BUA that will remain (not subject to
permitting) (sq ft)436129 sf 87438 sf
14 Existing BUA that is already permitted (sq ft)
15 Existing BUA that will be removed (sq ft)
16 Percent BUA 47%64%
17 Design storm (inches)1 in 1 in
18 Design volume of SCM (cu ft)47690 cf 10863 cf
19 Calculation method for design volume Simple Method Simple Method
20
Entire Site 1
4 Type of SCM
dry ponds /
sandfilter
dry ponds /
sandfilter
5 Total BUA from project (sq ft)619253 sf 202015 sf
6 1995 rules 436129 sf 87438 sf
SL 2006-246
2008 rules
2017 rules
7
New BUA on subdivided lots (subject to
permitting) (sq ft)
1995 rules
SL 2006-246
2008 rules
2017 rules
8
New BUA outside of subdivided lots (subject
to permitting) (sf)183124 sf 114577 sf
1995 rules
SL 2006-246
2008 rules
2017 rules 183124 sf 114577 sf
9 Offsite - total area (sq ft)285054 sf
1995 rules 285054 sf
SL 2006-246
2008 rules
2017 rules
10 Offsite BUA (sq ft)54754 sf
1995 rules 54754 sf
SL 2006-246
2008 rules
DRAINAGE AREA INFORMATION
DRAINAGE AREA INFORMATION
ADDITIONAL INFORMATION
graval yard, concrete pads
Please use this space to provide any additional information about the
drainage area(s):
2017 rules
11 Design storm (inches)1 in 1 in
1995 rules
SL 2006-246
2008 rules
2017 rules 1 in 1 in
12 Breakdown of new BUA:
- Parking (sq ft)
- Sidewalk (sq ft)
- Roof (sq ft)14385 sf 7186 sf
- Roadway (sq ft)22241 sf
- Future (sq ft)

- Other, please specify in the comment box
below (sq ft) 146498 sf 107391 sf
13
New infiltrating permeable pavement on
subdivided lots (sq ft)
14
New infiltrating permeable pavement outside of
subdivided lots (sq ft)
15
Exisitng BUA that will remain (not subject to
permitting) (sq ft)436129 sf 87438 sf
16 Existing BUA that is already permitted (sq ft)
17 Existing BUA that will be removed (sq ft)
18 Percent BUA 47%64%
19 Design volume of SCM (cu ft)47690 cf 10863 cf
20 Calculation method for design volume Simple Method Simple Method
21
Please use this space to provide any additional
information about the drainage area(s):
graval yard, concrete pads
ADDITIONAL INFORMATION
DRAINAGE AREAS
1 Is this a high density project?Yes
2 If so, number of drainage areas/SCMs 2
3
Is all/part of this project subject to previous rule
versions?Yes
CLICK TO LOAD FORM
Entire Site 1
4 Type of SCM
dry ponds /
sandfilter dry pond
5 Total BUA in project (sq ft)619253 sf 187030 sf
6
New BUA on subdivided lots (subject to
permitting) (sq ft)
7
New BUA outside of subdivided lots (subject to
permitting) (sf)183124 sf 57525 sf
8 Offsite - total area (sq ft)285054 sf 10962 sf
9 Offsite BUA (sq ft)54754 sf
10 Breakdown of new BUA outside subdivided lots:
- Parking (sq ft)
- Sidewalk (sq ft)
- Roof (sq ft)14385 sf 7199 sf
- Roadway (sq ft)22241 sf 13686 sf
- Future (sq ft)

- Other, please specify in the comment box
below (sq ft) 146498 sf 36640 sf
11
New infiltrating permeable pavement on
subdivided lots (sq ft)
12
New infiltrating permeable pavement outside of
subdivided lots (sq ft)
13
Exisitng BUA that will remain (not subject to
permitting) (sq ft)436129 sf 129505 sf
14 Existing BUA that is already permitted (sq ft)
15 Existing BUA that will be removed (sq ft)
16 Percent BUA 47%77%
17 Design storm (inches)1 in 1 in
18 Design volume of SCM (cu ft)47690 cf 36827 cf
19 Calculation method for design volume Simple Method Simple Method
20
Entire Site 1
4 Type of SCM
dry ponds /
sandfilter dry pond
5 Total BUA from project (sq ft)619253 sf 187030 sf
6 1995 rules 436129 sf 129505 sf
SL 2006-246
2008 rules
2017 rules
7
New BUA on subdivided lots (subject to
permitting) (sq ft)
1995 rules
SL 2006-246
2008 rules
2017 rules
8
New BUA outside of subdivided lots (subject
to permitting) (sf)183124 sf 57525 sf
1995 rules
SL 2006-246
2008 rules
2017 rules 183124 sf 57525 sf
9 Offsite - total area (sq ft)285054 sf 10960 sf
1995 rules 285054 sf 10962 sf
SL 2006-246
2008 rules
2017 rules
10 Offsite BUA (sq ft)54754 sf
1995 rules 54754 sf
SL 2006-246
2008 rules
DRAINAGE AREA INFORMATION
ADDITIONAL INFORMATION
Please use this space to provide any additional information about the
drainage area(s):
graval yard, concrete pads
DRAINAGE AREA INFORMATION
2017 rules
11 Design storm (inches)1 in 1 in
1995 rules
SL 2006-246
2008 rules
2017 rules 1 in 1 in
12 Breakdown of new BUA:
- Parking (sq ft)
- Sidewalk (sq ft)
- Roof (sq ft)14385 sf 7199 sf
- Roadway (sq ft)22241 sf 13686 sf
- Future (sq ft)

- Other, please specify in the comment box
below (sq ft) 146498 sf 36640 sf
13
New infiltrating permeable pavement on
subdivided lots (sq ft)
14
New infiltrating permeable pavement outside of
subdivided lots (sq ft)
15
Exisitng BUA that will remain (not subject to
permitting) (sq ft)436129 sf 129505 sf
16 Existing BUA that is already permitted (sq ft)
17 Existing BUA that will be removed (sq ft)
18 Percent BUA 47%77%
19 Design volume of SCM (cu ft)47690 cf 36827 cf
20 Calculation method for design volume Simple Method Simple Method
21
Please use this space to provide any additional
information about the drainage area(s):
graval yard, concrete pads
ADDITIONAL INFORMATION
SAND FILTER
1 Drainage area number 1
2 Design volume of SCM (cu ft)10836 sf
3 Is the SCM sized to treat the SW from all surfaces at build-out?No
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
side slopes? No
7
Are the inlets, outlets, and receiving stream protected from erosion (10-
year storm)?Yes
8
Is there an overflow or bypass for inflow volume in excess of the
design volume?Yes
9 What is the method for dewatering the SCM for maintenance?Drawdown Orifice
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
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
18 SHWT elevation (fmsl)N/A
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? Yes
23 Volume that can be retained in the sediment chamber (cubic feet)3694 cf
24 Will there be a permanent pool in the sediment chamber?No
25 Bottom of the sediment chamber (fmsl)442.00
26 Area of the sediment chamber (square feet)2868 sf
27 Physical depth of the sediment chamber (inches)24 in
28
Ponding depth in the sediment chamber, above any permanent pool
(inches)24 in
29 Elevation of top of weir between chambers (fmsl)444
30 Volume that can be retained in the sand chamber (cubic feet)4160 cf
31 Bottom of the sand chamber (fmsl)440.50
32 Area of the sand chamber (square feet)5547 sf
33 Physical depth of the sand chamber (inches)18 in
34
Ponding depth in the sand chamber, above any permanent pool
(inches)24 in
35 Elevation of the bypass device (fmsl)
36 Type of bypass device
37 Mechanism for distributing flow over the sand surface
38 Sand specification for sand chamber ASTM C-33
39 Depth above underdrain pipe (inches)36 in
40
Will the media be maintained to drain at least two inches per hour at
the sand surface?Yes
41
Is at least one clean-out pipe provided at the low point of each
underdrain line?Yes
42 Will clean-out pipes be capped? Yes
43
Please use this space to provide any additional information about the
Sand Filter(s):
SAND FILTER MDC FROM 02H .1056
GENERAL MDC FROM 02H .1050
Sand Chamber
Sediment Chamber
ADDITIONAL INFORMATION
Sand Filter 6 4:06 PM 6/8/2020
DRY POND
1 Drainage area number 1 2
2 Design volume of SCM (cu ft)10863 cf 36827 cf
3
Is the SCM sized to treat the SW from all surfaces
at build-out?No No
4 Is the SCM located away from contaminated soils?Yes Yes
5 What are the side slopes of the SCM (H:V)?3:1 3:1
6
Does the SCM have retaining walls, gabion walls or
other engineered side slopes? No No
7
Are the inlets, outlets, and receiving stream
protected from erosion (10-year storm)?Yes Yes
8
Is there an overflow or bypass for inflow volume in
excess of the design volume?No No
9
What is the method for dewatering the SCM for
maintenance?Drawdown Orifice Drawdown Orifice
10
If applicable, will the SCM be cleaned out after
construction?Yes Yes
11
Does the maintenance access comply with General
MDC (8)?Yes Yes
12
Does the drainage easement comply with General
MDC (9)?Yes Yes
13
If the SCM is on a single family lot, does (will?) the
plat comply with General MDC (10)?No No
14
Is there an O&M Agreement that complies with
General MDC (11)?Yes Yes
15
Is there an O&M Plan that complies with General
MDC (12)?Yes Yes
16 Does the SCM follow the device specific MDC?Yes Yes
17
Was the SCM designed by an NC licensed
professional?Yes Yes
18 SHWT elevation (fmsl)
19 Elevation of the bottom of the dry pond (fmsl)442 442
20 Distance from bottom to SHWT (feet)
21
Elevation of the temporary pool during the design
storm (feet)442 ft 442 ft
22 Ponding depth of the design storm (feet)2 ft 4 ft
23
Will the dry pond be uniformly graded to flow toward
the outlet?Yes Yes
24 Is a low flow channel being provided?No No
25
Are the inlet(s) and outlet located in a manner that
avoids short-circuiting?Yes Yes
26
Will berms or baffles be provided to increase the
flow path?Yes Yes
27 What method of pretreatment will be provided?Forbay Forbay
28 Diameter of drawdown orifice (in)2 in 3 in
29 Drawdown time for the temporary pool (hours)48 hr-120 hr 48 hr-120 hr
30
Does the pond minimize impacts to the receiving
channel from the 1-yr, 24-hr storm?Yes Yes
31
Is there a small permantent pool near the orifice to
prevent clogging?No Yes
32 Will the outlet be designed to prevent clogging?Yes Yes
33
Are the dam and embankment planted in non-
clumping turf grass?Yes Yes
34
Species of turf that will be used on the dam and
embankment
non-clumping turf
grass
non-clumping turf
grass
35
Will trees and shrubs be prevented from growing on
the dam and embankment?Yes Yes
36
Please use this space to provide any additional
information about the infiltration system(s):
GENERAL MDC FROM 02H .1050
DRY POND MDC FROM 02H .1062
ADDITIONAL INFORMATION
Dry Pond 7 4:06 PM 6/8/2020