HomeMy WebLinkAboutSW5220801_Supplement-EZ Form_20221220SUPPLEMENT-EZ COVER PAGE
PROJECT INFORMATION
1
Project Name
Project Area ac
Coastal Wetland Area ac
Surface Water Area ac
Dollar General
4.83
-
High
No
2
3
4
5
Is this project High or Low Density?
6
Does this project use an off -site SCM?
COMPLIANCE WITH 02H .1003 44
7
Width of vegetated setbacks provided feet
30
8
Will the vegetated setback remain vegetated?
Yes
9
If BUA is pro2osed in the setback does it meet NCAC 02H.1003 4 c-d ?
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
0
14
Stormwater Wetland
1
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:
28 Organization:
29 Street address:
31 1 Phone number(s):
32 Email:
Matt Lowder,
Bowman North Carolina, Ltd-
4006 Barrett Drive, Suite 104
Raleigh, NC 27609
919-553-6570
mlowder@bowman.com
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.
ignat a of Designer
1Z L ZL
Date
DRAINAGE AREAS
1
Is this a -hioh 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
5
Is all/part of this project subject to previous rule
versions?
No
FORMS LOADED
DRAINAGE AREA INFORMATION
Entire Site
1
4
Type of SCM
-
Wetland
5
Total drainage area (sq ft
210577 sf
47553
6
Onsile drainage area (sq fl
210577 sf
47553
7
Offsile draina ge area (sq ft
8
Total BUA in pro4ect (sq ft
36178 sf
35697 sf
9permitting)
New BUA on subdivided lots (subject to
s ft
10permitting)
New BUA not on subdivided lots (subject to
s
11
Offs ite BUA s
12
Breakdown of new BUA not on subdivided lots:
-Parking s ft
23017 sf
22536 sf
Sidewalk �sq ft
2521 sf
2521 sf
Roof (sq ft
10640 sf
10640 sf
Roadway s ft
Future (sq ft
Other, please specify in the comment box
below (sq ft
13
New infiltrating permeable pavement on
subdivided lots (sq ft
14
New infiltrating permeable pavement not on
subdivided lots (sq ft
15permitting)
Existing BUA that will remain (not subject to
s ft
16
Existing BUA that is already permitted (sq ft
17
Existing BUA that will be removed (sq ft
1191 sf
1191 sf
18
Percent BUA
17.18%
75.07%
19
Des n storm inches
1.0 in
20
Design volume of SCM (cu ft)
3554 cf
21
Calculation mefhod for design volume
Simple Method
ADDITIONAL INFORMATION
Please use this space to provide any additional information about the
22 draina a area(a):
There is 481 sf (impervious bypass) of the driveway that will not be treated
by the SCM.
STORMWATER WETLAND
1 Draina a area number 1
r2 Minimum required treatment volume (cu ft) 3554 d
[GeNtRALM fROM 02H •loss
3
is the SCM sized to treat the SW from all surfaces at build -out?
Yes
4
Is the SCM located away from contaminaled soils?
Yes
5
What are the side slopes of the SCM H:V ?
3:1
8
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- ear storm)?
Yes
8
Is there an overflow or bypass for inflow volume in excess of the
design volume?
Yes
9
Whal 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 ?
N/A
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
Dces the SCM follow the device specific MDC?
Ygs
17
Was the SCM designed b an NC linensod rafesslonal?
Yea
UffifW-1054
18
Design volume of SCM (cu fi)
3554 d
19
Are the inlet(s) and outlet located in a manner that avoids short-
circuiting?
Yes
20
Are berms or baffles provided to improve the Flowpath?
Yes
21
Does the office drawdown from below the top surface of the
permanent I?
Yes
22
Dces the wetland minimize impacts to the receiving channel from the
1- , 24-hr storm?
Yes
23
Is a trash rack or other device provided to protect the outlet system?
Yes
Wetland 1 10:22 AM 12/20/2022
STORMWATER WETLAND
Solt a w Plrmb
50
Soil amendment depth (Inches)
12 In
51
Has a soil amendment specification beenprovided?
Yes
52
Has a landscaping plan that meets SW Wetland MDC (12) been
Yes
provided?
53
Number of plants per 200 square feet (#) in the shallow water zone:
54
toes the temporary inundation zone planting comply with SW
Yes
Vlettand mt)0 t1A ?
55
Are the dam structure and temporary fin slopes planted in non-
Yes
clumping turf rass?
56
W III rattails bo ptaMod in the wetland?
No
ADDMON&
INFORMATION.
57 Please use IN& space to provide any additional intormetion aboul
_ the stonnwalerwetland(s):
o sproadstieel wouldnY let me enter values for i159, the plant numbers
We added 507 plants (50 plants per 20091). Line 24 • The peak
attentUatlon for Orange County 1s for the 1 year, 24hr slonm ovont.
Wetland 2 10:22 AM 12/20/2022