SW4220502_Supplement-EZ Form_20220514

SUPPLEMENT-EZ COVER PAGE
FORMS LOADED
PROJECT INFORMATION
1 1 Project Name Snow Camp Solar, LLC
2 Project Area (ac) 25.33
3 Coastal Wetland Area (ac) 0
4 Surface Water Area (ac) 0
5 Is this project High or Low Density? Low
F Does this Droiect use an off -site SCM? No
COMPLIANCE WITH 02H .1003(4)
7
Width of vegetated setbacks provided (feet)
15
8
Will the vegetated setback remain vegetated?
N/A
9
If BUA is proposed in the setback, does it meet NCAC 02H.1003(4)(c-d)?
N/A
10
Is streambank stabilization proposed on this project?
No
NUMBER AND TYPE OF SC
11 Infiltration System
12
Bioretention Cell
13
Wet Pond
14
Stormwater Wetland
15
Permeable Pavement
16
Sand Filter
17
Rainwater Harvesting (RWH)
18
Green Roof
19
Level Spreader -Filter Strip (LS-FS)
20
Disconnected Impervious Surface (DIS)
21
Treatment Swale
22
Dry Pond
23
StormFilter
24
Silva Cell
25
Bayfilter
26
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FORMS LOADED
DESIGNER WTIFICATION
27
Name and Title:
Mario T. Carreon, Civil Engineering Manager
28
Organization:
Cypress Creek Renewables, LLC
29
Street address:
5310 S. Alston Ave Bldg 300
30
City, State, Zip:
Durham, NC 27713
31
Phone number(s):
[phone]
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?
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)
1103375
6
Onsite drainage area (sq ft)
1103375
7
Offsite drainage area (sq ft)
0
8
Total BUA in project (sq ft)
48783 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)
43758 sf
5025 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
4.42%
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 pads and steel piles supporting the fixed tilt solar PV system.

LOW DENSITY
UIREMENTS FOR LOW DENSITY PROJECTS FROM 02H .1003
oject below density thresholds set forth in the applicable stormwater rule?
Yes
r
s project maximize dispersed flow and minimize channelization of flow?
Yes
the use of piping been minimized per.1003(2)(c)?
Yes
slopes of the vegetated conveyances (H:V)
N/A
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?
Are variations to rule .1003 proposed?
No
14
No
ADDITIONAL
15
INFORMATION
1 Please use this space to provide any additional information about this low density project:
Solar farm construction was completed in 2016 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
25.33
1.12
24.21
0.40
2
3
4
5