SW6231106_Supplement-EZ Form_20240228

SUPPLEMENT-EZ COVER PAGE
FORMS LOADED
PROJECT INFORMATION
1 Project Name Bryant Road Subdivisoin
2 Project Area(ac) 54.82
3 Coastal Wetland Area(ac) 0
4 Surface Water Area(ac) 2.16
5 Is this project High or Low Density? High
6 Does this project use an off-site SCM? No
COMPLIANCE WITH 02H.1003(4)
7 Width of vegetated setbacks provided(feet) 30'
8 Will the vegetated setback remain vegetated? Yes
9 Is BUA other that as listed in.1003(4)(c-d)out of the setback? No
10 Is streambank stabilization proposed on this project? No
NUMBER AND TYPE OF SCMs:
11 Infiltration System 0
12 Bioretention Cell 0
13 Wet Pond 3
14 Stormwater Wetland 0
15 Permeable Pavement 0
16 Sand Filter 0
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 0
23 StormFilter 0
24 Silva Cell 0
25 Bayfilter 0
26 Filterra 0
FORMS LOADED
DESIGNER CERTIFICATION
27 Name and Title: Mike Stocks,P.E.
28 Organization: Stocks Engineering
29 Street address: 801 E Washington St.
30 City,State,Zip: Nashville,NC 27856
31 Phone number(s): 252-459-8196
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.
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DRAINAGE AREAS
1 Is this a high density project? Yes
2 If so,number of drainage areas/SCMs 3
Is all/part of this project subject to previous rule
3 versions? No
FORMS LOADED
DRAINAGE AREA INFORMATION ) Entire Site 1 2 3
4 Type of SCM _ Wet Pond Wet Pond Wet Pond
5 Total BUA in project(sq ft) 892628 sf 73950 sf 537679 sf 280999 sf
New BUA on subdivided lots(subject to
6 permitting)(sq ft) 651250 sf 43500 sf 413000 sf 194750 sf
New BUA outside of subdivided lots(subject to
7 permitting)(sf) 241678 sf 30450 sf 124679 sf 86549 sf
8 Offsite-total area(sq ft)
9 Offsite BUA(sq ft)
10 Breakdown of new BUA outside subdivided lots:
-Parking(sq ft) 5530 sf 5530 sf
-Sidewalk(sq ft) _ 38748 sf 5450 sf 16649 sf 16649 sf
-Roof(sq ft) 651250 sf 43500 sf 413000 sf 194750 sf
-Roadway(sq ft) 197100 sf 25000 sf 102500 sf 69600 sf
-Future(sq ft)
-Other,please specify in the comment box
below(sq ft)
New infiltrating permeable pavement on
11 subdivided lots(sq ft)
New infiltrating permeable pavement outside of
12 subdivided lots(sq ft)
Exisitng BUA that will remain(not subject to
13 permitting)(sq ft) _
14 Existing BUA that is already permitted(sq ft)
15 Existing BUA that will be removed(sq ft)
16 Percent BUA 34% 13% 47% 34%
17 Design storm(inches) 1 in 1 in 1 in
18 Design volume of SCM(cu ft) 6478 cf 44952 cf 23355 cf
19 Calculation method for design volume SIMPLE SIMPLE SIMPLE
ADDITIONAL INFORMATION
Please use this space to provide any additional information about the
20 drainage area(s):

WET POND
1 Drainage area number 1 2 3
2 Design volume of SCM(cu ft) + 6478 cf I 44952 cf I 23355 cf
GENERAL MDC FROM 02H.1050
3 Is the SCM sized to treat the SW from all surfaces at build-out? Yes Yes Yes
4 Is the SCM located away from contaminated soils? Yes Yes Yes
5 What are the side slopes of the SCM(H:V)? 3:1 3:1 3:1
Does the SCM have retaining walls,gabion walls or other
6 engineered side slopes? No No No
Are the inlets,outlets,and receiving stream protected from erosion
7(10-year storm)? Yes Yes Yes
Is there an overflow or bypass for inflow volume in excess of the
8 design volume? Yes Yes Yes
9 What is the method for dewatering the SCM for maintenance? Pump(preferred) Pump(preferred) Pump(preferred)
10 If applicable,will the SCM be cleaned out after construction? Yes Yes Yes
11 Does the maintenance access comply with General MDC(8)? Yes Yes _ Yes
12 Does the drainage easement comply with General MDC(9)? Yes Yes Yes
If the SCM is on a single family lot,does(will?)the plat comply with
13 General MDC(10)? Yes Yes Yes
14 Is there an O&M Agreement that complies with General MDC(11)? Yes Yes Yes
15 Is there an O&M Plan that complies with General MDC(12)? Yes Yes Yes
16 Does the SCM follow the device specific MDC? Yes Yes Yes
17 Was the SCM designed by an NC licensed professional? Yes Yes Yes
WET POND MDC FROM 02H.1053 s
18 Method used SA/DA SA/DA SA/DA
19 Has a stage/storage table been provided in the calculations? Yes Yes Yes
Elevation of the excavated main pool depth(bottom of sediment
20 removal)(fmsl) 184.00 174.00 175.00
21 Elevation of the main pool bottom-(top of sediment removal)(fmsl) 185.00 175.00 176.00
22 Elevation of the bottom of the vegetated shelf(fmsl) 192.00 181.00 182.00
23 Elevation of the permanent pool(fmsl) 193.08 182.00 183.00
24 Elevation of the top of the vegetated shelf(fmsl) 193.08 182.00 183.00
25 Elevation of the temporary pool(fmsl) 195.35 184.75 _ 186.00
26 Surface area of the main permanent pool(square feet) 10586:1 41589:1 22088:1
27 Volume of the main permanent pool(cubic feet) 32256 cf 174632 cf _ 84661 cf
28 Average depth of the main pool(feet) 4.00 ft 5.00 ft 4.50 ft
— 29 Average depth equation used Equation 2 Equation 2 Equation 2
_30 If using equation 3,main pool perimeter(feet)
31 If using equation 3,width of submerged veg.shelf(feet) _
32 Volume of the forebay(cubic feet) 7065 cf 34073 cf 15252 cf
33 Is this 15-20%of the volume in the main pool? Yes Yes Yes
34 Clean-out depth for forebay(inches) 12 in 12 in 12 in
— 35 Design volume of SCM(cu ft) 6478 cf 44952 cf _ 23355 cf
36 Is the outlet an orifice or a weir? Orifice Orifice Orifice
37 If orifice,orifice diameter(inches) 1.25 in 3.00 in 2.25 in—
38 If weir,weir height(inches)
39 If weir,weir length(inches) _
40 Drawdown time for the temporary pool(days) 2.2 2.1 2.4
Are the inlet(s)and outlet located in a manner that avoids short-
41 circuiting? Yes Yes Yes
42 Are berms or baffles provided to improve the flow path? No No _ No
43 Depth of forebay at entrance(inches) 60 in 72 in 60 in
44 Depth of forebay at exit(inches) 48 in 60 in 48 in
45 Does water flow out of the forebay in a non-erosive manner? Yes Yes Yes
46 Width of the vegetated shelf(feet) _ 6 ft 6 ft _ 6 ft
47 Slope of vegetated shelf(H:V) 6:1 6:1 6:1
Does the orifice drawdown from below the top surface of the
48 permanent pool? Yes Yes Yes
Does the pond minimize impacts to the receiving channel from the
49 1-yr,24-hr storm? Yes Yes Yes
Are fountains proposed?(If Y,please provide documentation that
50 MDC(9)is met.) No No No
Is a trash rack or other device provided to protect the outlet
51 system? Yes Yes Yes
52 Are the dam and embankment planted in non-clumping turf grass? Yes Yes Yes
53 Species of turf that will be used on the dam and embankment_ Centipede Centipede Centipede
54 Has a planting plan been provided for the vegetated shelf? Yes Yes Yes
ADDITIONAL INFORMATION 'UP.
Please use this space to provide any additional information about
55 the wet pond(s):
Wet Pond 3 11:17 AM 2/28/2024