SW3211203_Supplement-EZ Form_20220223

SUPPLEMENT-EZ COVER PAGE
FORM5LOA044
PROJECT INFORMATION
1
Pro ed Name
BG Stewart Solar Farts, L:LC
2
Project Area (tic)___^
382
3
Coastal Wetland Area (ac)
0
4
Surtace Water Area Sac)
0
5
IS this
6
Does this project use an off -site SCM?
No
PLiANCE WITH 02H .1003(4j
7 Wivegetated setbacks_Qrovided (feet) __.._._.,.— 15
_ 8 WIII the
9 If BUA ieQro osed in the setback, does k meet NCAC 02H�1003(4 o d ? WA
... L
10 Is streambank stabilization proposed on this project? No
NUMBERY1NO 7<YPE OF SC.w,_...•._....�...._. _..._._�_.�._..._.�._..�.�._,_•.�.....�..,._.,,_._,....�..,-�.�....-_.�._.....,..�.
11 Infiltration System
12 Bloretention Cell-
13 Wet Pond
14
StormwaterWetland "-'—
--"-------- .�--•_.._,_.__.,�._..__._ _.
15
Permeable Pavement
—16
Sand Fit------jM@0tj
17
RainwaHarves
18
Green Roof
19
Level Spreader -Filer Stri�LS•FS)
20
Disconnected Impervious Surfeoe (DIS)
21
Treatment Swale
_ 22
Dry Pond ------• .__._.__.__�__.__ _...�_. �____.__._._.
_..:___.__._.u___.._____._._ .—_,.._.__._ _._.4 -
_23
Stomn liter
24
Silva Cell__.._...____...—.____....___.._______,....__�—�._..—_—.--
26
FlRerra
FORMSLOADEp
1(3NER
CLrRTtftCAT10N
27
Name and Tige:
,tr...
Marto T. Cartoon Civil Engineering Manager
Renewables, LLC
—29
Streat address: _ _ —
5310 S. Alston Ave Bldg 300
30
CiiZi State, Z�w _ —
Durham, NC 277'13
31
_ _
Phone number(s): _. _ _._ _
_--
__ter ____............._._
..__910) 90fr1540
32
Email
�marb.carreonCocrenawcom^_�^.—�
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 forth Is, to the hest 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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Signature of
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Date
111

DRAINAGE AREAS
1
Is this a high density project?
No
2
If so, number of drainage areas/SCMs
0
3
Does this project have low density areas?
Yes
4
If so, number of low density drainage areas
1
5
Is all/part of this project subject to previous rule
versions?
I No
FORMS LOADED
DRAINAGE
AREA INFORMATION
Entire Site
LD 1
4
Type of SCM
DIS
DIS
5
Total drainage area (sq ft)
1707552
6
Onsite drainage area (sq ft)
1707552
7
Offsite drainage area (sq ft)
8
Total BUA in project (sq ft)
18319 sf
9
New BUA on subdivided lots (subject to
permitting) (sq ft)
10
New BUA not on subdivided lots (subject to
permitting) (so
Offsite BUA (sq ft)
11
12
Breakdown of new BUA not on subdivided lots:
- Parking (sq ft)
- Sidewalk (sq ft)
- Roof (sq ft)
- Roadway (sq ft)
- Future (sq ft)
- Other, please specify in the comment box
below (sq ft)
16947 sf
1571 sf
13
New infiltrating permeable pavement on
subdivided lots (sq ft)
14
New infiltrating permeable pavement not on
subdivided lots (sq ft)
15
Existing BUA that will remain (not subject to
permitting) (sq ft)
16
Existing BUA that is already permitted (sq ft)
17
Existing BUA that will be removed (sq ft)
18
Percent BUA
1.07%
19
Design storm (inches)
N/A
20
Design volume of SCM (cu ft)
N/A
21
Calculation method for design volume
N/A
ADDITIONAL INFORMATION
22
Please use this space to provide any additional information about the
drainage area(s):
Inverter equipment pads and steel piles supporting fixed tilt Solr PV system.

LOW DENSITY
DESIGN REQUIREMENTS FOR LOW DENSI ROJECTS FROM 02
1
Is project below density thresholds set forth in the applicable stormwater rule?
Yes
2
Does project maximize dispersed flow and minimize channelization of flow?
Yes
3
Has the use of piping been minimized per .1003(2)(c)?
Yes
4
Side slopes of the vegetated conveyances (H:V)
5
Maximum velocity in the vegetated conveyances during the 10-year storm?
6
Are curb outlet swales proposed?
No
7
Maximum longitudinal slope of curb outlet swale(s) (%)
8
Bottom width of curb outlet swale(s) (feet)
9
Maximum side slope of curb outlet swale(s) (H:V)
10
Minimum length of curb outlet swale(s) (feet)
11
Are treatment swales used instead of curb outlet swales?
12
Is stormwater released at the edge of the setback as dispersed flow?
Yes
13
Have stormwater outlets been designed to prevent downslope erosion?
No
14
Are variations to rule .1003 proposed?
No
ADDITIONAL
INFORMATION
15
1 Please use this space to provide any additional information about this low density project:
Solar farm construction was completed in 2015 and all project disturbed areas are vegetated. There are no permanent SCMs for
the project - all flow is considered dispersed sheet flow.
Swale
Drainage
BUA
Pervious
Q
Slope
Vallow
Vactual Flow depth
#
Are
(ac)
area
C
(cfs)
(%)
(fps)
(fps) (ft)
(ac1
39.20
0.42
38.78
0.40
2
3
4
5