SW5220201_Design Calculations_20220517

R ry s o n's I�� '�Jge
7hdivision11
aM Spring Hope, NI G
Owner/Developer:
Axiom Development, LLC
3739 National Drive, Suite 105
Raleigh, NC 27612
919.760.0101
\\�•��H CAR ��''��.
SEAL
19843VQ
•
-4
ENGINEERING
801 EAST WASHINGTON STREET P.O. BOX 1108
NASHVILLE, N.C. 27856 PHONE: [phone]
WV W.STOCKSENGINEERING.COM

Project:
Location
Date:
Basin ID:
•
ENGINEERING
Skimmer Sediment Basin
Bryson's Ridge Subdivision
Nash County,NC
14-Jan-22
Area Disturbed
Runoff Area
Runoff Coefficient
Intensity (10 Year)
Q 10=
Basin Volume Calculation:
Volume of Sediment=
Surface Area Calculation:
Surface Area =
Sediment Basin Sizing:
Bottom of Basin
85 Length
Top of Basin
95 Length
Sediment Basin Area:
Sediment Basin Volume
1
5.55
5.55
0.35
6.64
12.90
5.55 Acres
9,990 CF
Acres
Acres
Inch / Hr
X 1,800 CF Sediment / Year
Q25 X 325 SF/CFS
12.90 1 CFS X 325 SF/CFS
4,192 SF
F
21:1 slope
40 Width 1 0 Depth
50 Width 1 2.5 7 Depth
4,750 SF
10,188 1CF
Weir Design and Velocity Check:
Weir Length= 15 Feet
Height of Water over Weir= 0.47 Feet
Velocity Check: 1.83 FPS
Skimmer Sizing:
Days to Drain = 3 Days
Skimmer Size = 2.5 Inches Orifice Size =
1.8 Inches

Project:
Location:
Date:
Basin ID:
•
ENGINEERING
Skimmer Sediment Basin
Bryson's Ridge Subdivision
Nash County,NC
14-Jan-22
Area Disturbed
Runoff Area
Runoff Coefficient
Intensity (10 Year)
Q 10=
Basin Volume Calculation:
Volume of Sediment=
Surface Area Calculation:
Surface Area =
Sediment Basin Sizing:
Bottom of Basin
215 Length
Top of Basin
227 Length
Sediment Basin Area:
Sediment Basin Volume:
9.66
9.66
0.35
6.64
22.45
9.66 Acres
17,388 ICF
Acres
Acres
Inch / Hr
CFS
X 1,800 CIF Sediment / Year
Q25 X 325 SF/CFS
22.45 1 CFS X 325 SF/CFS
7,296 SF
�- -- - -- At a 1 2 [:I.slope
45 Width 1 0 Depth
57 Width 1 3 Depth
12,939 SF
33,921 CF
Weir Design and Velocity Check:
Weir Length= 15 Feet
Height of Water over Weir= 0.68 Feet
Velocity Check: 2.21 FPS
Skimmer Sizing:
Days to Drain = 3 Days
Skimmer Size = 2.5 Inches Orifice Size =
2.4 Inches

Channel Report
Hydraf low Express Extension for Autodesk0 AutoCADO Civil 3DO by Autodesk, Inc.
TD#1 -Grassed
Triangular
Side Slopes (z:1)
= 2.00, 2.00
Total Depth (ft)
= 2.00
Invert Elev (ft)
= 100.00
Slope (%)
= 3.00
N-Value
= 0.035
Calculations
Compute by:
Known Q
Known Q (cfs)
= 9.94
Monday, Feb 14 2022
Highlighted
Depth (ft)
= 1.06
Q (cfs)
= 9.940
Area (sqft)
= 2.25
Velocity (ft/s)
= 4.42
Wetted Perim (ft)
= 4.74
Crit Depth, Yc (ft)
= 1.09
Top Width (ft)
= 4.24
EGL (ft)
= 1.36
Elev (ft) Section Depth (ft)
3.00
103.00
2.50
102.50
2.00
102.00
1.50
101.50
1.00
101.00
0.50
100.50
0.00
100.00
99 50
-0 50
1 2 3 4 5 6
Reach (ft)
7 8
9 10

Channel Report
Hydraf low Express Extension for Autodesk0 AutoCADO Civil 31DO by Autodesk, Inc.
TD#1 - Bare Soil
Triangular
Side Slopes (z:1)
= 2.00, 2.00
Total Depth (ft)
= 2.00
Invert Elev (ft)
= 100.00
Slope (%)
= 3.00
N-Value
= 0.020
Calculations
Compute by:
Known Q
Known Q (cfs)
= 9.94
Monday, Feb 14 2022
Highlighted
Depth (ft)
= 0.86
Q (cfs)
= 9.940
Area (sqft)
= 1.48
Velocity (ft/s)
= 6.72
Wetted Perim (ft)
= 3.85
Crit Depth, Yc (ft)
= 1.09
Top Width (ft)
= 3.44
EGL (ft)
= 1.56
Elev (ft) Section Depth (ft)
103.00
3.00
102.50
102.00
2.50
2.00
101.50
101.00
1.50
1.00
100.50
N7
71
100.00
0.50
0.00
QQ r1n
-0 50
1 2 3 4 5 6 7
Reach (ft)
8 9 10

Channel Report
Hydraflow Express Extension for Autodesk0 AutoCADO Civil 3DO by Autodesk, Inc.
TD#2 - Grassed
Triangular
Side Slopes (z:1)
= 2.00, 2.00
Total Depth (ft)
= 2.00
Invert Elev (ft)
= 100.00
Slope (%)
= 2.00
N-Value
= 0.035
Calculations
Compute by:
Known Q
Known Q (cfs)
= 2.45
Monday, Feb 14 2022
Highlighted
Depth (ft)
= 0.68
Q (cfs)
= 2.450
Area (sqft)
= 0.92
Velocity (ft/s)
= 2.65
Wetted Perim (ft)
= 3.04
Crit Depth, Yc (ft)
= 0.63
Top Width (ft)
= 2.72
EGL (ft)
= 0.79
Elev (ft) Section Depth (ft)
103.00
102.50
3.00
2.50
102.00
101.50
2.00
1.50
101.00
1.00
100.50
0.50
100.00
00 tin
0.00
0 50
1 2 3 4 5 6 7 8
Reach (ft)
9 10

Channel Report
Hydraflow Express Extension for Autodesk0 AutoCADO Civil 3D0 by Autodesk, Inc.
TD#2 - Bare Soil
Triangular
Side Slopes (z:1)
= 2.00, 2.00
Total Depth (ft)
= 2.00
Invert Elev (ft)
= 100.00
Slope (%)
= 2.00
N-Value
= 0.020
Calculations
Compute by:
Known Q
Known Q (cfs)
= 2.45
Monday, Feb 14 2022
Highlighted
Depth (ft)
= 0.55
Q (cfs)
= 2.450
Area (sqft)
= 0.60
Velocity (ft/s)
= 4.05
Wetted Perim (ft)
= 2.46
Crit Depth, Yc (ft)
= 0.63
Top Width (ft)
= 2.20
EGL (ft)
= 0.80
Elev (ft) Section Depth (ft)
,Q�
103.00
3.00
102.50
2.50
2.00
102.00
1.50
101.50
1.00
101.00
0.50
100.50
100.00
Qor,
0.00
-0 50
1 2 3 4
5
Reach (ft)
6 7 8
9 10

Channel Report
Hydraf low Express Extension for Autodesk0 AutoCADO Civil 3DO by Autodesk, Inc.
TD#3 - Grassed
Triangular
Side Slopes (z:1)
= 2.00, 2.00
Total Depth (ft)
= 2.00
Invert Elev (ft)
= 100.00
Slope (%)
= 2.30
N-Value
= 0.035
Calculations
Compute by:
Known Q
Known Q (cfs)
= 11.41
Monday, Feb 14 2022
Highlighted
Depth (ft)
= 1.17
Q (cfs)
= 11.41
Area (sqft)
= 2.74
Velocity (ft/s)
= 4.17
Wetted Perim (ft)
= 5.23
Crit Depth, Yc (ft)
= 1.16
Top Width (ft)
= 4.68
EGL (ft)
= 1.44
Elev (ft) Section Depth (ft)
3.00
103.00
2.50
102.50
2.00
102.00
1.50
101.50
1.00
101.00
0.50
100.50
0.00
100.00
99 50
-0 50
1 2 3 4
5
Reach (ft)
6 7 8
9 10

Channel Report
Hydraflow Express Extension for Autodesk0 AutoCADO Civil 3D0 by Autodesk, Inc.
TD#3 - Bare Soil
Triangular
Side Slopes (z:1)
= 2.00, 2.00
Total Depth (ft)
= 2.00
Invert Elev (ft)
= 100.00
Slope (%)
= 2.30
N-Value
= 0.020
Calculations
Compute by:
Known Q
Known Q (cfs)
= 11.41
Monday, Feb 14 2022
Highlighted
Depth (ft)
= 0.95
Q (cfs)
= 11.41
Area (sqft)
= 1.80
Velocity (ft/s)
= 6.32
Wetted Perim (ft)
= 4.25
Crit Depth, Yc (ft)
= 1.16
Top Width (ft)
= 3.80
EGL (ft)
= 1.57
Elev (ft) Section Depth (ft)
3.00
103.00
2.50
102.50
2.00
102.00
1.50
101.50
1.00
101.00
0.50
100.50
0.00
100.00
99 50
-0 50
1 2 3 4
5
Reach (ft)
6 7
8 9 10

Channel Report
Hydraflow Express Extension for Autodesk0 AutoCADO Civil 3D0 by Autodesk, Inc.
TD#4 - Grassed
Triangular
Side Slopes (z:1)
= 2.00, 2.00
Total Depth (ft)
= 2.00
Invert Elev (ft)
= 100.00
Slope (%)
= 2.00
N-Value
= 0.035
Calculations
Compute by:
Known Q
Known Q (cfs)
= 7.54
Monday, Feb 14 2022
Highlighted
Depth (ft)
= 1.03
Q (cfs)
= 7.540
Area (sqft)
= 2.12
Velocity (ft/s)
= 3.55
Wetted Perim (ft)
= 4.61
Crit Depth, Yc (ft)
= 0.98
Top Width (ft)
= 4.12
EGL (ft)
= 1.23
Elev (ft) Section Depth (ft)
103.00
102.50
3.00
102.00
2.50
101.50
2.00
101.00
1.50
100.50
1.00
100.00
0.50
99.50
0.00
-0 50
1 2 3 4 5 6 7 8 9 10
Reach (ft)

Channel Report
Hydraflow Express Extension for Autodesk0 AutoCADO Civil 3DO by Autodesk, Inc.
TD#4 - Bare Soil
Triangular
Side Slopes (z:1)
= 2.00, 2.00
Total Depth (ft)
= 2.00
Invert Elev (ft)
= 100.00
Slope (%)
= 2.00
N-Value
= 0.020
Calculations
Compute by:
Known Q
Known Q (cfs)
= 7.54
Monday, Feb 14 2022
Highlighted
Depth (ft)
= 0.84
Q (cfs)
= 7.540
Area (sqft)
= 1.41
Velocity (ft/s)
= 5.34
Wetted Perim (ft)
= 3.76
Crit Depth, Yc (ft)
= 0.98
Top Width (ft)
= 3.36
EGL (ft)
1.28
Elev (ft) Section Depth (ft)
103.00
3.00
102.50
102.00
2.50
101.50
2.00
101.00
1.50
100.50
1.00
100.00
0.50
99 50
0.00
0 50
1 2 3 4
5 6 7 8
Reach (ft)
9 10

Project:
Location
Date:
Basin ID:
Wet Pond Design
Bryson's Ridge Subdivision
Sprinq Hope. NC
17-Jan-21
Drainage Area (A)
Impervious Area
% Impervious (1)
13.21
Acres
Acres
6.99
52.91%
Water Quality Volume
Calculate Rv: Rv = 0.05+.9 X I
Rv =1 0.53
WQV = 3630 X RD X Rv X A
Ro = 1.00 Inch
WQV = 25,234 CF
Surface Area
Orifice Sizinq
•
ENGINEERING
Includes all impervious for development and
offsite drainage area at 100% BUA.
Average Depth = 4.00
SA/DA Ratio = 1.39 (Choose SA/DA Ration from the NC BMP Maunual Table 1 or 2)
Surface Area = (SA/DA Ratio / 100) X Area (Ac.) 143,560 (SF/Ac.)
7,998 SF
Design Orifice Q= CDAO 2gHo
CD = 0.6
g= 32.2 FT/SZ
Ho = H/3= 0.67 FT
H= 2 FT
Ao = 0.03 FEET
Design Pipe = 2.5 JINCH
Design Orifice Q =1 0.13 CFS
Days to Drain =1 2.2
Wetland Plants - Vegetative Shelf
Vegetative Shelf SurfaceArea = 2202 SF
# of Wetland Plants = 551

WET DETENTION FOREBAY VOLUME COMPARISON
FOREBAY VOLUME
ELEVATI
ON
SURFAC
E AREA
INCREME
NTAL
VOLUME
235.0
1,069.0
1,252.0
236.0
1,435.0
1,650.0
237.0
1,865.0
2,112.5
238.0
2,360.0
2,652.0
239.0
2,944.0
SUM = 7,666.5
Forebay is: of Pond.
Pond Average Depth: 1 4.6 Feet
POND VOLUME
ELEVATI
ON
SURFAC
E AREA
INCREME
NTAL
VOLUME
233.0
5,600.0
5,941.5
234.0
6,283.0
6,639.5
235.0
6,996.0
7,367.0
236.0
7,738.0
8,124.0
237.0
8,510.0
8,910.0
238.0
9,310.0
9,723.0
239.0
10,136.0
SUM = 46,705.0

Watershed Model Schematic HydraflowHydrographsbylntelisolvev9.22
1 -Pre Dev Areal 2 - Post Dev 1 To SCM 3 - Post Dev 1 Bypass
4 -SCM 1 Outflow
Project: SCM 1.gpw Friday, Sep 7, 2012

Hydrograph Report
IA
Hydraflow Hydrographs by Intelisolve v9.22
Hyd. No. 1
Pre Dev Areal
Hydrograph type
= SCS Runoff
Storm frequency
= 1 yrs
Time interval
= 2 min
Drainage area
= 19.750 ac
Basin Slope
= 5.0 %
Tc method
= TR55
Total precip.
= 2.68 in
Storm duration
= 24 hrs
Friday, Sep 7, 2012
Peak discharge = 3.382 cfs
Time to peak
= 732 min
Hyd. volume
= 22,085 cuft
Curve number
= 63.2
Hydraulic length
= 671 ft
Time of conc. (Tc)
= 26.90 min
Distribution
= Type II
Shape factor
= 484
Pre Dev Areal
Q (cfs) Hyd. No. 1 -- 1 Year Q (cfs)
4.00 4.00
3.00 3.00
2.00 2.00
1.00 1.00
0.00 - 0.00
0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560
Hyd No. 1 Time (min)

Hydrograph Report
3
Hydraflow Hydrographs by Intelisolve v9.22
Hyd. No. 2
Post Dev 1 To SCM
Hydrograph type =
SCS Runoff
Storm frequency =
1 yrs
Time interval =
2 min
Drainage area =
13.210 ac
Basin Slope =
0.0 %
Tc method =
TR55
Total precip. =
2.68 in
Storm duration =
24 hrs
Q (cfs)
14.00
12.00
10.00
Me
It 1
4.00
WE
Post Dev 1 To SCM
Hyd. No. 2 -- 1 Year
Friday, Sep 7, 2012
Peak discharge
= 12.84 cfs
Time to peak
= 722 min
Hyd. volume
= 35,435 cuft
Curve number
= 74.1
Hydraulic length
= 0 ft
Time of conc. (Tc)
= 12.30 min
Distribution
= Type II
Shape factor
= 484
Q (cfs)
14.00
12.00
10.00
. OR
4.00
2.00
0.00
120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560
Hyd No. 2 Time (min)

Hydrograph Report
I
Hydraflow Hydrographs by Intelisolve v9.22
Hyd. No. 3
Post Dev 1 Bypass
Hydrograph type =
SCS Runoff
Storm frequency =
1 yrs
Time interval =
2 min
Drainage area =
6.540 ac
Basin Slope =
0.0 %
Tc method =
TR55
Total precip. =
2.68 in
Storm duration =
24 hrs
Friday, Sep 7, 2012
Peak discharge = 4.007 cfs
Time to peak
= 724 min
Hyd. volume
= 13,044 cuft
Curve number
= 70.5
Hydraulic length
= 0 ft
Time of conc. (Tc)
= 14.40 min
Distribution
= Type II
Shape factor
= 484
Post Dev 1 Bypass
Q (cfs) Hyd. No. 3 -- 1 Year Q (cfs)
5.00 5.00
4.00 4.00
3.00 3.00
2.00 2.00
1.00 1.00
0.00 - 0.00
0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560
Hyd No. 3 Time (min)

5
Hydrograph Report
Hydraflow Hydrographs by Intelisolve v9.22
Friday, Sep 7, 2012
Hyd. No. 4
SCM 1 Outflow
Hydrograph type
= Reservoir
Peak discharge
= 0.195 cfs
Storm frequency
= 1 yrs
Time to peak
= 1444 min
Time interval
= 2 min
Hyd. volume
= 31,050 cuft
Inflow hyd. No.
= 2 - Post Dev 1 To SCM
Max. Elevation
= 140.90 ft
Reservoir name
= <New Pond>
Max. Storage
= 30,014 cuft
Storage Indication method used.
Q (cfs)
14.00
12.00
10.00
It 1
4.00
WE
600
Hyd No. 4
SCM 1 Outflow
Hyd. No. 4 -- 1 Year
Q (cfs)
14.00
12.00
10.00
4.00
2.00
0.00
1200 1800 2400 3000 3600 4200 4800 5400 6000
Time (min)
Hyd No. 2 Total storage used = 30,014 cuft

Pond Report s
Hydraflow Hydrographs by Intelisolve v9.22
Friday, Sep 7, 2012
Pond No. 1 - <New Pond>
Pond Data
Contours - User -defined contour areas. Average
end area method used for volume calculation.
Begining Elevation = 139.00 ft
Stage / Storage Table
Stage (ft) Elevation (ft) Contour area (sqft)
Incr. Storage (cuft)
Total storage (cult)
0.00 139.00
13,080
0
0
1.00 140.00
16,265
14,673
14,673
1.63 140.63
17,265
10,562
25,234
2.00 141.00
18,031
6,530
31,764
3.00 142.00
19,910
18,971
50,735
3.50 142.50
21,809
10,430
61,164
Culvert / Orifice Structures
[A]
[B]
[C]
[PrfRsr]
Rise (in)
= 2.50
0.00
0.00
0.00
Span (in)
= 2.50
0.00
0.00
0.00
No. Barrels
= 1
0
0
0
Invert El. (ft)
= 139.00
0.00
0.00
0.00
Length (ft)
= 34.00
0.00
0.00
0.00
Slope (%)
= 1.50
0.00
0.00
n/a
N-Value
= .013
.013
.013
n/a
Orifice Coeff.
= 0.60
0.60
0.60
0.60
Multi -Stage
= n/a
No
No
No
Stage (ft)
4.00
3.00
2.00
1.00
0.00 ' '
0.0 10.0
Total Q
Weir Structures
[A]
[B]
[C]
[D]
Crest Len (ft)
= 15.00
0.00
0.00
0.00
Crest El. (ft)
= 140.90
0.00
0.00
0.00
Weir Coeff.
= 3.33
3.33
3.33
3.33
Weir Type
= Rect
---
---
---
Multi-Stage
= No
No
No
No
Exfil.(in/hr)
= 0.000 (by
Contour)
TW Elev. (ft)
= 0.00
Note: Culvert/Orifice outflows are analyzed under inlet (ic) and outlet (oc) control. Weir risers checked for orifice conditions (ic) and submergence (s).
20.0 30.0
Stage / Discharge
Elev (ft)
143.00
142.00
141.00
140.00
139.00
40.0 50.0 60.0 70.0 80.0 90.0 100.0 110.0
Discharge (cfs)

Hydrograph Report
7
Hydraflow Hydrographs by Intelisolve v9.22
Hyd. No. 1
Pre Dev Areal
Hydrograph type
= SCS Runoff
Storm frequency
= 10 yrs
Time interval
= 2 min
Drainage area
= 19.750 ac
Basin Slope
= 5.0 %
Tc method
= TR55
Total precip.
= 4.98 in
Storm duration
= 24 hrs
Q (cfs)
28.00
24.00
20.00
16.00
12.00
M
4.00
Pre Dev Areal
Hyd. No. 1 -- 10 Year
Friday, Sep 7, 2012
Peak discharge = 26.92 cfs
Time to peak
= 730 min
Hyd. volume
= 106,592 cuft
Curve number
= 63.2
Hydraulic length
= 671 ft
Time of conc. (Tc)
= 26.90 min
Distribution
= Type II
Shape factor
= 484
Q (cfs)
28.00
24.00
20.00
16.00
12.00
8.00
4.00
0.00 ' 1 1 1 1 1 1 1 1 1' � ' 0.00
0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560
Hyd No. 1 Time (min)

Hydrograph Report
Hydraflow Hydrographs by Intelisolve v9.22
Hyd. No. 2
Post Dev 1 To SCM
Hydrograph type =
SCS Runoff
Storm frequency =
10 yrs
Time interval =
2 min
Drainage area =
13.210 ac
Basin Slope =
0.0 %
Tc method =
TR55
Total precip. =
4.98 in
Storm duration =
24 hrs
Friday, Sep 7, 2012
Peak discharge = 44.82 cfs
Time to peak
= 720 min
Hyd. volume
= 116,542 cuft
Curve number
= 74.1
Hydraulic length
= 0 ft
Time of conc. (Tc)
= 12.30 min
Distribution
= Type II
Shape factor
= 484
Post Dev 1 To SCM
Q (cfs) Hyd. No. 2 -- 10 Year Q (cfs)
50.00 50.00
40.00 40.00
30.00 30.00
20.00 20.00
10.00 10.00
0.00 - 0.00
0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560
Hyd No. 2 Time (min)

Hydrograph Report
Hydraflow Hydrographs by Intelisolve v9.22
Hyd. No. 3
Post Dev 1 Bypass
Hydrograph type =
SCS Runoff
Storm frequency =
10 yrs
Time interval =
2 min
Drainage area =
6.540 ac
Basin Slope =
0.0 %
Tc method =
TR55
Total precip. =
4.98 in
Storm duration =
24 hrs
Q (cfs)
18.00
15.00
12.00
3.00
Post Dev 1 Bypass
Hyd. No. 3 -- 10 Year
120 240 360 480 600 720 840
Hyd No. 3
Friday, Sep 7, 2012
Peak discharge
= 16.78 cfs
Time to peak
= 722 min
Hyd. volume
= 47,712 cuft
Curve number
= 70.5
Hydraulic length
= 0 ft
Time of conc. (Tc)
= 14.40 min
Distribution
= Type II
Shape factor
= 484
Q (cfs)
18.00
15.00
12.00
• 11
3.00
0.00
960 1080 1200 1320 1440 1560
Time (min)

Hydrograph
Report
10
Hydraflow Hydrographs by Intelisolve v9.22
Friday, Sep 7, 2012
Hyd. No. 4
SCM 1 Outflow
Hydrograph type
= Reservoir
Peak discharge
= 26.01 cfs
Storm frequency
= 10 yrs
Time to peak
= 728 min
Time interval
= 2 min
Hyd. volume
= 112,002 cuft
Inflow hyd. No.
= 2 - Post Dev 1 To SCM
Max. Elevation
= 141.55 ft
Reservoir name
= <New Pond>
Max. Storage
= 42,083 cuft
Storage Indication method used
SCM 1 Outflow
Q (cfs) Q (cfs)
Hyd. No. 4 -- 10 Year
50.00 50.00
40.00 40.00
30.00 30.00
20.00 20.00
10.00 10.00
0.00 - 0.00
0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560
Time (min)
Hyd No. 4 — Hyd No. 2 Total storage used = 42,083 cuft

Hydrograph Report
11
Hydraflow Hydrographs by Intelisolve v9.22
Hyd. No. 1
Pre Dev Areal
Hydrograph type
= SCS Runoff
Storm frequency
= 25 yrs
Time interval
= 2 min
Drainage area
= 19.750 ac
Basin Slope
= 5.0 %
Tc method
= TR55
Total precip.
= 6.20 in
Storm duration
= 24 hrs
Friday, Sep 7, 2012
Peak discharge = 43.35 cfs
Time to peak
= 730 min
Hyd. volume
= 164,797 cuft
Curve number
= 63.2
Hydraulic length
= 671 ft
Time of conc. (Tc)
= 26.90 min
Distribution
= Type II
Shape factor
= 484
Pre Dev Areal
Q (cfs) Hyd. No. 1 -- 25 Year Q (cfs)
50.00 50.00
40.00 40.00
30.00 30.00
20.00 20.00
10.00 10.00
0.00 - 0.00
0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560
Hyd No. 1 Time (min)

Hydrograph Report
12
Hydraflow Hydrographs by Intelisolve v9.22
Hyd. No. 2
Post Dev 1 To SCM
Hydrograph type =
SCS Runoff
Storm frequency =
25 yrs
Time interval =
2 min
Drainage area =
13.210 ac
Basin Slope =
0.0 %
Tc method =
TR55
Total precip. =
6.20 in
Storm duration =
24 hrs
Friday, Sep 7, 2012
Peak discharge = 64.15 cfs
Time to peak
= 720 min
Hyd. volume
= 166,337 cuft
Curve number
= 74.1
Hydraulic length
= 0 ft
Time of conc. (Tc)
= 12.30 min
Distribution
= Type II
Shape factor
= 484
Post Dev 1 To SCM
Q (cfs) Hyd. No. 2 -- 25 Year Q (cfs)
70.00 70.00
60.00 60.00
50.00 50.00
40.00 40.00
30.00 30.00
20.00 20.00
10.00 10.00
0.00 - 0.00
0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560
Hyd No. 2 Time (min)

Hydrograph Report
13
Hydraflow Hydrographs by Intelisolve v9.22
Hyd. No. 3
Post Dev 1 Bypass
Hydrograph type =
SCS Runoff
Storm frequency =
25 yrs
Time interval =
2 min
Drainage area =
6.540 ac
Basin Slope =
0.0 %
Tc method =
TR55
Total precip. =
6.20 in
Storm duration =
24 hrs
Q (cfs)
28.00
24.00
20.00
16.00
12.00
M
4.00
Post Dev 1 Bypass
Hyd. No. 3 -- 25 Year
Friday, Sep 7, 2012
Peak discharge = 24.82 cfs
Time to peak
= 722 min
Hyd. volume
= 69,732 cuft
Curve number
= 70.5
Hydraulic length
= 0 ft
Time of conc. (Tc)
= 14.40 min
Distribution
= Type II
Shape factor
= 484
Q (cfs)
28.00
24.00
20.00
16.00
12.00
M
4.00
0.00 ' 0.00
0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560
Hyd No. 3 Time (min)

14
Hydrograph Report
Hydraflow Hydrographs by Intelisolve v9.22
Friday, Sep 7, 2012
Hyd. No. 4
SCM 1 Outflow
Hydrograph type
= Reservoir
Peak discharge
= 51.28 cfs
Storm frequency
= 25 yrs
Time to peak
= 726 min
Time interval
= 2 min
Hyd. volume
= 161,775 cuft
Inflow hyd. No.
= 2 - Post Dev 1 To SCM
Max. Elevation
= 141.92 ft
Reservoir name
= <New Pond>
Max. Storage
= 49,127 cuft
Storage Indication method used.
Q (cfs)
70.00
50.00
1 11
30.00
20.00
10.00
1
SCM 1 Outflow
Hyd. No. 4 -- 25 Year
Q (cfs)
70.00
50.00
40.00
30.00
20.00
10.00
.rT.T.�
120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560
Time (min)
Hyd No. 4 — Hyd No. 2 Total storage used = 49,127 cuft

•
ENGINEERING
Rip -Rap Outlet Protection
Pipe # FES #102
Known:
30" RCP
Q25 = 45.94 cfs
W V25 = 11.25 ft/s
Min. Required: (Use NCDEQTable 8.06b)
La = 24'
W = 12'
La 3do = 7.5'
dso = 0.3' (Rip Rap Size)
i1=1 I
uiiJ �c Il11=
'Filter *Use Class B Rip Rap over
Section AA blanket Mirafi 140N 18" in depth.
W
W
00
•
Rip -Rap Outlet Protection
Pipe # FES #85
Known:
18" RCP
Q25 =
3.37 cfs
V25 =
1.91 ft/s
Min. Required:
(Use NCDEQTable 8.06b)
La = 6'
W = 5'
3do = 4.5'
dso = 0.2'
(Rip Rap Size)
*Use Class B
Rip Rap over
Mirafi 140N 18"
in depth.
Rip -Rap Outlet Protection
Pipe # SCM #1 outlet
Known:
15' Weir
Q25 = 51.28 cfs
V25 = 4.92 ft/s
Min. Required:
La = 11'
W = 15'
dso = 0.3' (Rip Rap Size)
*Use Class B Rip Rap over
Mirafi 140N 18" in depth.

USDA United States
Department of
Agriculture
N RCS
Natural
Resources
Conservation
Service
A product of the National
Cooperative Soil Survey,
a joint effort of the United
States Department of
Agriculture and other
Federal agencies, State
agencies including the
Agricultural Experiment
Stations, and local
participants
Custom Soil Resource
Report for
Nash County,
North Carolina
November 4, 2021

Preface
Soil surveys contain information that affects land use planning in survey areas.
They highlight soil limitations that affect various land uses and provide information
about the properties of the soils in the survey areas. Soil surveys are designed for
many different users, including farmers, ranchers, foresters, agronomists, urban
planners, community officials, engineers, developers, builders, and home buyers.
Also, conservationists, teachers, students, and specialists in recreation, waste
disposal, and pollution control can use the surveys to help them understand,
protect, or enhance the environment.
Various land use regulations of Federal, State, and local governments may impose
special restrictions on land use or land treatment. Soil surveys identify soil
properties that are used in making various land use or land treatment decisions.
The information is intended to help the land users identify and reduce the effects of
soil limitations on various land uses. The landowner or user is responsible for
identifying and complying with existing laws and regulations.
Although soil survey information can be used for general farm, local, and wider area
planning, onsite investigation is needed to supplement this information in some
cases. Examples include soil quality assessments (http://www.nres.usda.gov/wps/
portal/nres/main/soils/health/) and certain conservation and engineering
applications. For more detailed information, contact your local USDA Service Center
(https:Hoffices.sc.egov.usda.gov/locator/app?agency=nres) or your NRCS State Soil
Scientist (http://www.nres.usda.gov/wps/portal/nres/detail/soils/contactus/?
cid=nres142p2_053951).
Great differences in soil properties can occur within short distances. Some soils are
seasonally wet or subject to flooding. Some are too unstable to be used as a
foundation for buildings or roads. Clayey or wet soils are poorly suited to use as
septic tank absorption fields. A high water table makes a soil poorly suited to
basements or underground installations.
The National Cooperative Soil Survey is a joint effort of the United States
Department of Agriculture and other Federal agencies, State agencies including the
Agricultural Experiment Stations, and local agencies. The Natural Resources
Conservation Service (NRCS) has leadership for the Federal part of the National
Cooperative Soil Survey.
Information about soils is updated periodically. Updated information is available
through the NRCS Web Soil Survey, the site for official soil survey information.
The U.S. Department of Agriculture (USDA) prohibits discrimination in all its
programs and activities on the basis of race, color, national origin, age, disability,
and where applicable, sex, marital status, familial status, parental status, religion,
sexual orientation, genetic information, political beliefs, reprisal, or because all or a
part of an individual's income is derived from any public assistance program. (Not
all prohibited bases apply to all programs.) Persons with disabilities who require

alternative means for communication of program information (Braille, large print,
audiotape, etc.) should contact USDA's TARGET Center at [phone] (voice
and TDD). To file a complaint of discrimination, write to USDA, Director, Office of
Civil Rights, 1400 Independence Avenue, S.W., Washington, D.C. 20250-9410 or
call [phone] (voice) or [phone] (TDD). USDA is an equal opportunity
provider and employer.

Contents
Preface....................................................................................................................
2
How Soil Surveys Are Made..................................................................................5
SoilMap..................................................................................................................
8
SoilMap................................................................................................................9
Legend................................................................................................................10
MapUnit Legend................................................................................................
11
MapUnit Descriptions.........................................................................................11
Nash County, North Carolina..........................................................................
13
GeB—Georgeville loam, 2 to 6 percent slopes ...........................................
13
GeC—Georgeville loam, 6 to 10 percent slopes.........................................14
GhB—Georgeville-Urban land complex, 0 to 6 percent slopes...................15
NnB—Nason loam, 2 to 6 percent slopes ...................................................
17
NnC—Nason loam, 6 to 10 percent slopes.................................................18
RaA—Rains fine sandy loam, 0 to 2 percent slopes, Southern Coastal
Plain......................................................................................................19
Soil Information for All Uses...............................................................................21
Soil Properties and Qualities..............................................................................
21
Soil Qualities and Features.............................................................................21
HydrologicSoil Group.................................................................................
21
References............................................................................................................
26

How Soil Surveys Are Made
Soil surveys are made to provide information about the soils and miscellaneous
areas in a specific area. They include a description of the soils and miscellaneous
areas and their location on the landscape and tables that show soil properties and
limitations affecting various uses. Soil scientists observed the steepness, length,
and shape of the slopes; the general pattern of drainage; the kinds of crops and
native plants; and the kinds of bedrock. They observed and described many soil
profiles. A soil profile is the sequence of natural layers, or horizons, in a soil. The
profile extends from the surface down into the unconsolidated material in which the
soil formed or from the surface down to bedrock. The unconsolidated material is
devoid of roots and other living organisms and has not been changed by other
biological activity.
Currently, soils are mapped according to the boundaries of major land resource
areas (MLRAs). MLRAs are geographically associated land resource units that
share common characteristics related to physiography, geology, climate, water
resources, soils, biological resources, and land uses (USDA, 2006). Soil survey
areas typically consist of parts of one or more MLRA.
The soils and miscellaneous areas in a survey area occur in an orderly pattern that
is related to the geology, landforms, relief, climate, and natural vegetation of the
area. Each kind of soil and miscellaneous area is associated with a particular kind
of landform or with a segment of the landform. By observing the soils and
miscellaneous areas in the survey area and relating their position to specific
segments of the landform, a soil scientist develops a concept, or model, of how they
were formed. Thus, during mapping, this model enables the soil scientist to predict
with a considerable degree of accuracy the kind of soil or miscellaneous area at a
specific location on the landscape.
Commonly, individual soils on the landscape merge into one another as their
characteristics gradually change. To construct an accurate soil map, however, soil
scientists must determine the boundaries between the soils. They can observe only
a limited number of soil profiles. Nevertheless, these observations, supplemented
by an understanding of the soil -vegetation -landscape relationship, are sufficient to
verify predictions of the kinds of soil in an area and to determine the boundaries.
Soil scientists recorded the characteristics of the soil profiles that they studied. They
noted soil color, texture, size and shape of soil aggregates, kind and amount of rock
fragments, distribution of plant roots, reaction, and other features that enable them
to identify soils. After describing the soils in the survey area and determining their
properties, the soil scientists assigned the soils to taxonomic classes (units).
Taxonomic classes are concepts. Each taxonomic class has a set of soil
characteristics with precisely defined limits. The classes are used as a basis for
comparison to classify soils systematically. Soil taxonomy, the system of taxonomic
classification used in the United States, is based mainly on the kind and character
of soil properties and the arrangement of horizons within the profile. After the soil

Custom Soil Resource Report
scientists classified and named the soils in the survey area, they compared the
individual soils with similar soils in the same taxonomic class in other areas so that
they could confirm data and assemble additional data based on experience and
research.
The objective of soil mapping is not to delineate pure map unit components; the
objective is to separate the landscape into landforms or landform segments that
have similar use and management requirements. Each map unit is defined by a
unique combination of soil components and/or miscellaneous areas in predictable
proportions. Some components may be highly contrasting to the other components
of the map unit. The presence of minor components in a map unit in no way
diminishes the usefulness or accuracy of the data. The delineation of such
landforms and landform segments on the map provides sufficient information for the
development of resource plans. If intensive use of small areas is planned, onsite
investigation is needed to define and locate the soils and miscellaneous areas.
Soil scientists make many field observations in the process of producing a soil map.
The frequency of observation is dependent upon several factors, including scale of
mapping, intensity of mapping, design of map units, complexity of the landscape,
and experience of the soil scientist. Observations are made to test and refine the
soil -landscape model and predictions and to verify the classification of the soils at
specific locations. Once the soil -landscape model is refined, a significantly smaller
number of measurements of individual soil properties are made and recorded.
These measurements may include field measurements, such as those for color,
depth to bedrock, and texture, and laboratory measurements, such as those for
content of sand, silt, clay, salt, and other components. Properties of each soil
typically vary from one point to another across the landscape.
Observations for map unit components are aggregated to develop ranges of
characteristics for the components. The aggregated values are presented. Direct
measurements do not exist for every property presented for every map unit
component. Values for some properties are estimated from combinations of other
properties.
While a soil survey is in progress, samples of some of the soils in the area generally
are collected for laboratory analyses and for engineering tests. Soil scientists
interpret the data from these analyses and tests as well as the field -observed
characteristics and the soil properties to determine the expected behavior of the
soils under different uses. Interpretations for all of the soils are field tested through
observation of the soils in different uses and under different levels of management.
Some interpretations are modified to fit local conditions, and some new
interpretations are developed to meet local needs. Data are assembled from other
sources, such as research information, production records, and field experience of
specialists. For example, data on crop yields under defined levels of management
are assembled from farm records and from field or plot experiments on the same
kinds of soil.
Predictions about soil behavior are based not only on soil properties but also on
such variables as climate and biological activity. Soil conditions are predictable over
long periods of time, but they are not predictable from year to year. For example,
soil scientists can predict with a fairly high degree of accuracy that a given soil will
have a high water table within certain depths in most years, but they cannot predict
that a high water table will always be at a specific level in the soil on a specific date.
After soil scientists located and identified the significant natural bodies of soil in the
survey area, they drew the boundaries of these bodies on aerial photographs and

Custom Soil Resource Report
identified each as a specific map unit. Aerial photographs show trees, buildings,
fields, roads, and rivers, all of which help in locating boundaries accurately.

Soil Map
The soil map section includes the soil map for the defined area of interest, a list of
soil map units on the map and extent of each map unit, and cartographic symbols
displayed on the map. Also presented are various metadata about data used to
produce the map, and a description of each soil map unit.

A
NnC �
n
*zA
5� ?6:z�
-yam 4i
ado
RaA
NnB 00
t.
*14
GeC
G-Ji
§ p
A,
20NO Halp MCDf H(M2 M No @CEO@.

MAP LEGEND
Area of Interest (AOI)
0
Area of Interest (AOI)
Soils
0
Soil Map Unit Polygons
Soil Map Unit Lines
Soil Map Unit Points
Special
Point Features
Iwo
Blowout
Borrow Pit
Clay Spot
Closed Depression
Gravel Pit
�i
Gravelly Spot
Landfill
A.
Lava Flow
Marsh or swamp
Mine or Quarry
Miscellaneous Water
Perennial Water
Rock Outcrop
Saline Spot
Sandy Spot
Severely Eroded Spot
Sinkhole
Slide or Slip
oa
Sodic Spot
Custom Soil Resource Report
MAP INFORMATION
Spoil Area
The soil surveys that comprise your AOI were mapped at
1:24,000.
Stony Spot
Very Stony Spot
Warning: Soil Map may not be valid at this scale.
Wet Spot
Enlargement of maps beyond the scale of mapping can cause
Other
misunderstanding of the detail of mapping and accuracy of soil
�-
Special Line Features
line placement. The maps do not show the small areas of
contrasting soils that could have been shown at a more detailed
Water Features
scale.
Streams and Canals
Transportation
Please rely on the bar scale on each map sheet for map
E F
Rails
measurements.
. 0
Interstate Highways
Source of Map: Natural Resources Conservation Service
US Routes
Web Soil Survey URL:
Coordinate System: Web Mercator (EPSG:3857)
Major Roads
Local Roads
Maps from the Web Soil Survey are based on the Web Mercator
projection, which preserves direction and shape but distorts
Background
distance and area. A projection that preserves area, such as the
Aerial Photography
Albers equal-area conic projection, should be used if more
accurate calculations of distance or area are required.
This product is generated from the USDA-NRCS certified data as
of the version date(s) listed below.
Soil Survey Area: Nash County, North Carolina
Survey Area Data: Version 20, Sep 2, 2021
Soil map units are labeled (as space allows) for map scales
1:50,000 or larger.
Date(s) aerial images were photographed: Oct 22, 2018—Oct
25, 2018
The orthophoto or other base map on which the soil lines were
compiled and digitized probably differs from the background
imagery displayed on these maps. As a result, some minor
shifting of map unit boundaries may be evident.
10

Custom Soil Resource Report
Map Unit Legend
Map Unit Symbol
Map Unit Name
Acres in AOI
Percent of AOI
GeB
Georgeville loam, 2 to 6 percent
18.7
26.1 %
slopes
GeC
Georgeville loam, 6 to 10
3.2
4.5%
percent slopes
GhB
Georgeville-Urban land
0.1
0.1 %
complex, 0 to 6 percent
slopes
NnB
Nason loam, 2 to 6 percent
25.5
35.5%
slopes
NnC
Nason loam, 6 to 10 percent
7.6
10.6%
slopes
RaA
Rains fine sandy loam, 0 to 2
16.7
23.3%
percent slopes, Southern
Coastal Plain
Totals for Area of Interest
71.8
100.0%
Map Unit Descriptions
The map units delineated on the detailed soil maps in a soil survey represent the
soils or miscellaneous areas in the survey area. The map unit descriptions, along
with the maps, can be used to determine the composition and properties of a unit.
A map unit delineation on a soil map represents an area dominated by one or more
major kinds of soil or miscellaneous areas. A map unit is identified and named
according to the taxonomic classification of the dominant soils. Within a taxonomic
class there are precisely defined limits for the properties of the soils. On the
landscape, however, the soils are natural phenomena, and they have the
characteristic variability of all natural phenomena. Thus, the range of some
observed properties may extend beyond the limits defined for a taxonomic class.
Areas of soils of a single taxonomic class rarely, if ever, can be mapped without
including areas of other taxonomic classes. Consequently, every map unit is made
up of the soils or miscellaneous areas for which it is named and some minor
components that belong to taxonomic classes other than those of the major soils.
Most minor soils have properties similar to those of the dominant soil or soils in the
map unit, and thus they do not affect use and management. These are called
noncontrasting, or similar, components. They may or may not be mentioned in a
particular map unit description. Other minor components, however, have properties
and behavioral characteristics divergent enough to affect use or to require different
management. These are called contrasting, or dissimilar, components. They
generally are in small areas and could not be mapped separately because of the
scale used. Some small areas of strongly contrasting soils or miscellaneous areas
are identified by a special symbol on the maps. If included in the database for a
given area, the contrasting minor components are identified in the map unit
descriptions along with some characteristics of each. A few areas of minor
11

Custom Soil Resource Report
components may not have been observed, and consequently they are not
mentioned in the descriptions, especially where the pattern was so complex that it
was impractical to make enough observations to identify all the soils and
miscellaneous areas on the landscape.
The presence of minor components in a map unit in no way diminishes the
usefulness or accuracy of the data. The objective of mapping is not to delineate
pure taxonomic classes but rather to separate the landscape into landforms or
landform segments that have similar use and management requirements. The
delineation of such segments on the map provides sufficient information for the
development of resource plans. If intensive use of small areas is planned, however,
onsite investigation is needed to define and locate the soils and miscellaneous
areas.
An identifying symbol precedes the map unit name in the map unit descriptions.
Each description includes general facts about the unit and gives important soil
properties and qualities.
Soils that have profiles that are almost alike make up a soil series. Except for
differences in texture of the surface layer, all the soils of a series have major
horizons that are similar in composition, thickness, and arrangement.
Soils of one series can differ in texture of the surface layer, slope, stoniness,
salinity, degree of erosion, and other characteristics that affect their use. On the
basis of such differences, a soil series is divided into soil phases. Most of the areas
shown on the detailed soil maps are phases of soil series. The name of a soil phase
commonly indicates a feature that affects use or management. For example, Alpha
silt loam, 0 to 2 percent slopes, is a phase of the Alpha series.
Some map units are made up of two or more major soils or miscellaneous areas.
These map units are complexes, associations, or undifferentiated groups.
A complex consists of two or more soils or miscellaneous areas in such an intricate
pattern or in such small areas that they cannot be shown separately on the maps.
The pattern and proportion of the soils or miscellaneous areas are somewhat similar
in all areas. Alpha -Beta complex, 0 to 6 percent slopes, is an example.
An association is made up of two or more geographically associated soils or
miscellaneous areas that are shown as one unit on the maps. Because of present
or anticipated uses of the map units in the survey area, it was not considered
practical or necessary to map the soils or miscellaneous areas separately. The
pattern and relative proportion of the soils or miscellaneous areas are somewhat
similar. Alpha -Beta association, 0 to 2 percent slopes, is an example.
An undifferentiated group is made up of two or more soils or miscellaneous areas
that could be mapped individually but are mapped as one unit because similar
interpretations can be made for use and management. The pattern and proportion
of the soils or miscellaneous areas in a mapped area are not uniform. An area can
be made up of only one of the major soils or miscellaneous areas, or it can be made
up of all of them. Alpha and Beta soils, 0 to 2 percent slopes, is an example.
Some surveys include miscellaneous areas. Such areas have little or no soil
material and support little or no vegetation. Rock outcrop is an example.
12

Custom Soil Resource Report
Nash County, North Carolina
GeB—Georgeville loam, 2 to 6 percent slopes
Map Unit Setting
National map unit symbol. 2vy6z
Elevation: 160 to 660 feet
Mean annual precipitation: 37 to 60 inches
Mean annual air temperature: 59 to 66 degrees F
Frost -free period: 200 to 240 days
Farmland classification: All areas are prime farmland
Map Unit Composition
Georgeville and similar soils: 90 percent
Minor components: 10 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Georgeville
Setting
Landform: I me rfluves
Landform position (two-dimensional): Summit, shoulder
Landform position (three-dimensional): Interfluve
Down -slope shape: Convex
Across -slope shape: Convex
Parent material: Residuum weathered from metavolcanics and/or residuum
weathered from argillite
Typical profile
Ap - 0 to 8 inches: loam
Bt - 8 to 45 inches: clay
BC - 45 to 50 inches: clay loam
C - 50 to 62 inches: loam
Properties and qualities
Slope: 2 to 6 percent
Depth to restrictive feature: More than 80 inches
Drainage class: Well drained
Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high
(0.57 to 1.98 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Available water supply, 0 to 60 inches: High (about 9.7 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 2e
Hydrologic Soil Group: B
Hydric soil rating: No
Minor Components
Tatum
Percent of map unit. 6 percent
Landform: Hillslopes on ridges
13

Custom Soil Resource Report
Landform position (two-dimensional): Backslope
Landform position (three-dimensional): Side slope
Down -slope shape: Linear
Across -slope shape: Convex
Hydric soil rating: No
Lignum
Percent of map unit: 4 percent
Landform: Imerfluves
Landform position (two-dimensional): Summit, shoulder
Landform position (three-dimensional): Interfluve
Down -slope shape: Convex
Across -slope shape: Convex
Hydric soil rating: No
GeC—Georgeville loam, 6 to 10 percent slopes
Map Unit Setting
National map unit symbol: 3gdd
Elevation: 200 to 1,400 feet
Mean annual precipitation: 37 to 60 inches
Mean annual air temperature: 59 to 66 degrees F
Frost -free period: 200 to 240 days
Farmland classification: Farmland of statewide importance
Map Unit Composition
Georgeville and similar soils: 90 percent
Minor components: 10 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Georgeville
Setting
Landform: Hillslopes on ridges
Landform position (two-dimensional): Backslope
Landform position (three-dimensional): Side slope
Down -slope shape: Linear
Across -slope shape: Convex
Parent material: Residuum weathered from metavolcanics and/or argillite
Typical profile
Ap - 0 to 8 inches: loam
Bt1 - 8 to 15 inches: clay loam
Bt2 - 15 to 45 inches: clay
BC - 45 to 80 inches: loam
Properties and qualities
Slope: 6 to 10 percent
Depth to restrictive feature: More than 80 inches
Drainage class: Well drained
Runoff class: Medium
14

Custom Soil Resource Report
Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high
(0.57 to 1.98 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Available water supply, 0 to 60 inches: Moderate (about 8.5 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 3e
Hydrologic Soil Group: B
Hydric soil rating: No
Minor Components
Tatum, moderately eroded
Percent of map unit. 7 percent
Landform: Hillslopes on ridges
Landform position (two-dimensional): Backslope
Landform position (three-dimensional): Side slope
Down -slope shape: Linear
Across -slope shape: Convex
Hydric soil rating: No
Lignum
Percent of map unit. 3 percent
Landform: Hillslopes on ridges
Landform position (two-dimensional): Backslope
Landform position (three-dimensional): Side slope
Down -slope shape: Linear
Across -slope shape: Convex
Hydric soil rating: No
GhB—Georgeville-Urban land complex, 0 to 6 percent slopes
Map Unit Setting
National map unit symbol. 3gdp
Elevation: 270 to 700 feet
Mean annual precipitation: 37 to 60 inches
Mean annual air temperature: 59 to 66 degrees F
Frost -free period: 200 to 240 days
Farmland classification: Not prime farmland
Map Unit Composition
Georgeville and similar soils: 55 percent
Urban land: 40 percent
Minor components: 5 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
15

Custom Soil Resource Report
Description of Georgeville
Setting
Landform: Imerfluves
Landform position (two-dimensional): Summit, shoulder
Landform position (three-dimensional): Interfluve
Down -slope shape: Convex
Across -slope shape: Convex
Parent material: Residuum weathered from metavolcanics and/or argillite
Typical profile
A - 0 to 8 inches: silt loam
Bt1 - 8 to 15 inches: clay loam
Bt2 - 15 to 45 inches: clay
BC - 45 to 80 inches: loam
Properties and qualities
Slope: 2 to 10 percent
Depth to restrictive feature: More than 80 inches
Drainage class: Well drained
Runoff class: Medium
Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high
(0.57 to 1.98 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Available water supply, 0 to 60 inches: Moderate (about 8.5 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 3e
Hydrologic Soil Group: B
Hydric soil rating: No
Description of Urban Land
Setting
Parent material: Impervious layers over human transported material
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 8
Hydric soil rating: No
Minor Components
Tarrus
Percent of map unit. 5 percent
Landform: Imerfluves
Landform position (two-dimensional): Summit
Landform position (three-dimensional): Interfluve
Down -slope shape: Convex
Across -slope shape: Convex
Hydric soil rating: No
it.

Custom Soil Resource Report
NnB—Nason loam, 2 to 6 percent slopes
Map Unit Setting
National map unit symbol. 3gdt
Elevation: 200 to 1,400 feet
Mean annual precipitation: 37 to 60 inches
Mean annual air temperature: 59 to 66 degrees F
Frost -free period: 200 to 240 days
Farmland classification: All areas are prime farmland
Map Unit Composition
Nason and similar soils: 80 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Nason
Setting
Landform: I me rfluves
Landform position (two-dimensional): Summit
Landform position (three-dimensional): Interfluve
Down -slope shape: Convex
Across -slope shape: Convex
Parent material: Residuum weathered from metamorphic rock and/or residuum
weathered from schist
Typical profile
Ap - 0 to 5 inches: loam
Bt - 5 to 37 inches: clay loam
C - 37 to 42 inches: gravelly silt loam
Cr - 42 to 80 inches: weathered bedrock
Properties and qualities
Slope: 2 to 6 percent
Depth to restrictive feature: 40 to 60 inches to paralithic bedrock
Drainage class: Well drained
Runoff class: Low
Capacity of the most limiting layer to transmit water (Ksat): Very low to high (0.00
to 1.98 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Available water supply, 0 to 60 inches: Moderate (about 6.9 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 2e
Hydrologic Soil Group: B
Hydric soil rating: No
17

Custom Soil Resource Report
NnC—Nason loam, 6 to 10 percent slopes
Map Unit Setting
National map unit symbol: 3gdv
Elevation: 200 to 1,400 feet
Mean annual precipitation: 37 to 60 inches
Mean annual air temperature: 59 to 66 degrees F
Frost -free period: 200 to 240 days
Farmland classification: Farmland of statewide importance
Map Unit Composition
Nason and similar soils: 80 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Nason
Setting
Landform: Hillslopes on ridges
Landform position (two-dimensional): Backslope
Landform position (three-dimensional): Side slope
Down -slope shape: Linear
Across -slope shape: Convex
Parent material: Residuum weathered from metamorphic rock and/or residuum
weathered from schist
Typical profile
Ap - 0 to 5 inches: loam
Bt - 5 to 37 inches: clay loam
C - 37 to 42 inches: gravelly silt loam
Cr - 42 to 80 inches: weathered bedrock
Properties and qualities
Slope: 6 to 10 percent
Depth to restrictive feature: 40 to 60 inches to paralithic bedrock
Drainage class: Well drained
Runoff class: Medium
Capacity of the most limiting layer to transmit water (Ksat): Very low to high (0.00
to 1.98 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Available water supply, 0 to 60 inches: Moderate (about 6.9 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 3e
Hydrologic Soil Group: B
Hydric soil rating: No
18

Custom Soil Resource Report
RaA—Rains fine sandy loam, 0 to 2 percent slopes, Southern Coastal
Plain
Map Unit Setting
National map unit symbol: 2v75b
Elevation: 30 to 330 feet
Mean annual precipitation: 40 to 55 inches
Mean annual air temperature: 59 to 70 degrees F
Frost -free period: 200 to 280 days
Farmland classification: Prime farmland if drained
Map Unit Composition
Rains, undrained, and similar soils: 70 percent
Rains, drained, and similar soils: 16 percent
Minor components: 14 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Rains, Undrained
Setting
Landform: Broad interstream divides on marine terraces, carolina bays on marine
terraces, flats on marine terraces
Landform position (three-dimensional): Dip, talf
Down -slope shape: Linear
Across -slope shape: Linear
Parent material: Loamy marine deposits
Typical profile
A - 0 to 8 inches: fine sandy loam
Eg - 8 to 13 inches: fine sandy loam
Btg - 13 to 72 inches: sandy clay loam
Properties and qualities
Slope: 0 to 2 percent
Depth to restrictive feature: More than 80 inches
Drainage class: Poorly drained
Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high
(0.57 to 1.98 in/hr)
Depth to water table: About 0 to 12 inches
Frequency of flooding: None
Frequency of ponding: None
Available water supply, 0 to 60 inches: High (about 9.7 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 4w
Hydrologic Soil Group: B/D
Hydric soil rating: Yes
19

Custom Soil Resource Report
Description of Rains, Drained
Setting
Landform: Broad interstream divides on marine terraces, carolina bays on marine
terraces, flats on marine terraces
Landform position (three-dimensional): Dip, talf
Down -slope shape: Linear
Across -slope shape: Linear
Parent material: Loamy marine deposits
Typical profile
Ap - 0 to 8 inches: fine sandy loam
Eg - 8 to 13 inches: fine sandy loam
Btg - 13 to 72 inches: sandy clay loam
Properties and qualities
Slope: 0 to 2 percent
Depth to restrictive feature: More than 80 inches
Drainage class: Poorly drained
Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high
(0.57 to 1.98 in/hr)
Depth to water table: About 24 to 36 inches
Frequency of flooding: None
Frequency of ponding: None
Available water supply, 0 to 60 inches: High (about 9.7 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 3w
Hydrologic Soil Group: B/D
Hydric soil rating: Yes
Minor Components
Lynchburg
Percent of map unit. 8 percent
Landform: Broad interstream divides on marine terraces, flats on marine terraces
Landform position (three-dimensional): Talf
Down -slope shape: Linear
Across -slope shape: Linear
Hydric soil rating: No
Pantego, ponded
Percent of map unit. 6 percent
Landform: Broad interstream divides, flats
Landform position (three-dimensional): Talf
Down -slope shape: Linear
Across -slope shape: Concave
Hydric soil rating: Yes
20

Soil Information for All Uses
Soil Properties and Qualities
The Soil Properties and Qualities section includes various soil properties and
qualities displayed as thematic maps with a summary table for the soil map units in
the selected area of interest. A single value or rating for each map unit is generated
by aggregating the interpretive ratings of individual map unit components. This
aggregation process is defined for each property or quality.
Soil Qualities and Features
Soil qualities are behavior and performance attributes that are not directly
measured, but are inferred from observations of dynamic conditions and from soil
properties. Example soil qualities include natural drainage, and frost action. Soil
features are attributes that are not directly part of the soil. Example soil features
include slope and depth to restrictive layer. These features can greatly impact the
use and management of the soil.
Hydrologic Soil Group
Hydrologic soil groups are based on estimates of runoff potential. Soils are
assigned to one of four groups according to the rate of water infiltration when the
soils are not protected by vegetation, are thoroughly wet, and receive precipitation
from long -duration storms.
The soils in the United States are assigned to four groups (A, B, C, and D) and
three dual classes (A/D, B/D, and C/D). The groups are defined as follows:
Group A. Soils having a high infiltration rate (low runoff potential) when thoroughly
wet. These consist mainly of deep, well drained to excessively drained sands or
gravelly sands. These soils have a high rate of water transmission.
Group B. Soils having a moderate infiltration rate when thoroughly wet. These
consist chiefly of moderately deep or deep, moderately well drained or well drained
soils that have moderately fine texture to moderately coarse texture. These soils
have a moderate rate of water transmission.
21

Custom Soil Resource Report
Group C. Soils having a slow infiltration rate when thoroughly wet. These consist
chiefly of soils having a layer that impedes the downward movement of water or
soils of moderately fine texture or fine texture. These soils have a slow rate of water
transmission.
Group D. Soils having a very slow infiltration rate (high runoff potential) when
thoroughly wet. These consist chiefly of clays that have a high shrink -swell
potential, soils that have a high water table, soils that have a claypan or clay layer at
or near the surface, and soils that are shallow over nearly impervious material.
These soils have a very slow rate of water transmission.
If a soil is assigned to a dual hydrologic group (A/D, B/D, or C/D), the first letter is
for drained areas and the second is for undrained areas. Only the soils that in their
natural condition are in group D are assigned to dual classes.
22

35° 5754" N
g
r
id
g
N
8
r
N
35° 57' 10" N
Custom Soil Resource Report
Map —Hydrologic Soil Group
in
760200 760300 760400 7GD5500 760600 760700 760800 760900 761000 761100
760200 760300 760400 76D500 760600 760700 7608M
Map Scale: 1:6,670 if printed on A portrait (8.5" x 11") sheet.
Meters N
0 50 100 200 300
Feet
0 300 600 1200 1800
Map projection: Web Mercator Comer coordinates: WGS84 Edge tics: UTM Zone 17N WGS84
23
760900 761000 761100
35° 5754" N
K
g
W
N
N
35° 5710" N
in
P2

MAP LEGEND
Area of Interest (AOI)
0
Area of Interest (AOI)
Soils
Soil Rating
Polygons
0
A
0
A/D
0
B
0
B/D
0
C
0
C/o
0
D
0
Not rated or not available
Soil Rating
Lines
N .
A
r .
A/D
N 0
B
r 0
B/D
.
C
C/o
r
D
Not rated or not available
Soil Rating
Points
❑
A
❑
A/D
0
B
0
B/D
Custom Soil Resource Report
C
C/o
0 D
❑ Not rated or not available
Water Features
Streams and Canals
Transportation
i-" Rails
­0 Interstate Highways
US Routes
Major Roads
Local Roads
Background
Aerial Photography
MAP INFORMATION
The soil surveys that comprise your AOI were mapped at
1:24,000.
Warning: Soil Map may not be valid at this scale.
Enlargement of maps beyond the scale of mapping can cause
misunderstanding of the detail of mapping and accuracy of soil
line placement. The maps do not show the small areas of
contrasting soils that could have been shown at a more detailed
scale.
Please rely on the bar scale on each map sheet for map
measurements.
Source of Map: Natural Resources Conservation Service
Web Soil Survey URL:
Coordinate System: Web Mercator (EPSG:3857)
Maps from the Web Soil Survey are based on the Web Mercator
projection, which preserves direction and shape but distorts
distance and area. A projection that preserves area, such as the
Albers equal-area conic projection, should be used if more
accurate calculations of distance or area are required.
This product is generated from the USDA-NRCS certified data as
of the version date(s) listed below.
Soil Survey Area: Nash County, North Carolina
Survey Area Data: Version 20, Sep 2, 2021
Soil map units are labeled (as space allows) for map scales
1:50,000 or larger.
Date(s) aerial images were photographed: Oct 22, 2018—Oct
25, 2018
The orthophoto or other base map on which the soil lines were
compiled and digitized probably differs from the background
imagery displayed on these maps. As a result, some minor
shifting of map unit boundaries may be evident.
24

Custom Soil Resource Report
Table —Hydrologic Soil Group
Map unit symbol
Map unit name
Rating
Acres in AOI
Percent of AOI
GeB
Georgeville loam, 2 to 6
B
18.7
26.1 %
percent slopes
GeC
Georgeville loam, 6 to 10
B
3.2
4.5%
percent slopes
GhB
Georgeville-Urban land
B
0.1
0.1 %
complex, 0 to 6
percent slopes
NnB
Nason loam, 2 to 6
B
25.5
35.5%
percent slopes
NnC
Nason loam, 6 to 10
B
7.6
10.6%
percent slopes
RaA
Rains fine sandy loam, 0
B/D
16.7
23.3%
to 2 percent slopes,
Southern Coastal Plain
Totals for Area of Interest
71.8
100.0%
Rating Options —Hydrologic Soil Group
Aggregation Method: Dominant Condition
Component Percent Cutoff.- None Specified
Tie -break Rule: Higher
25

References
American Association of State Highway and Transportation Officials (AASHTO).
2004. Standard specifications for transportation materials and methods of sampling
and testing. 24th edition.
American Society for Testing and Materials (ASTM). 2005. Standard classification of
soils for engineering purposes. ASTM Standard D2487-00.
Cowardin, L.M., V. Carter, F.C. Golet, and E.T. LaRoe. 1979. Classification of
wetlands and deep -water habitats of the United States. U.S. Fish and Wildlife
Service FWS/OBS-79/31.
Federal Register. July 13, 1994. Changes in hydric soils of the United States.
Federal Register. September 18, 2002. Hydric soils of the United States.
Hurt, G.W., and L.M. Vasilas, editors. Version 6.0, 2006. Field indicators of hydric
soils in the United States.
National Research Council. 1995. Wetlands: Characteristics and boundaries.
Soil Survey Division Staff. 1993. Soil survey manual. Soil Conservation Service.
U.S. Department of Agriculture Handbook 18. http://www.nres.usda.gov/wps/portal/
n res/d eta i I/n ati o n a I/s o i Is/?cid = n res 142 p2_0 54262
Soil Survey Staff. 1999. Soil taxonomy: A basic system of soil classification for
making and interpreting soil surveys. 2nd edition. Natural Resources Conservation
Service, U.S. Department of Agriculture Handbook 436. http://
www. nres. usda.gov/wps/portal/nres/detail/national/soils/?cid=nres142p2_053577
Soil Survey Staff. 2010. Keys to soil taxonomy. 11th edition. U.S. Department of
Agriculture, Natural Resources Conservation Service. http://
www. nres. usda.gov/wps/portal/nres/detail/national/soils/?cid=nres142p2_053580
Tiner, R.W., Jr. 1985. Wetlands of Delaware. U.S. Fish and Wildlife Service and
Delaware Department of Natural Resources and Environmental Control, Wetlands
Section.
United States Army Corps of Engineers, Environmental Laboratory. 1987. Corps of
Engineers wetlands delineation manual. Waterways Experiment Station Technical
Report Y-87-1.
United States Department of Agriculture, Natural Resources Conservation Service.
National forestry manual. http://www.nres.usda.gov/wps/portal/nres/detail/soils/
home/?cid=nres142p2_053374
United States Department of Agriculture, Natural Resources Conservation Service.
National range and pasture handbook. http://www.nres.usda.gov/wps/portal/nres/
detail/national/landuse/rangepastu re/?cid=stelprdb1043084
W

Custom Soil Resource Report
United States Department of Agriculture, Natural Resources Conservation Service.
National soil survey handbook, title 430-VI. http://www.nres.usda.gov/wps/portal/
n res/d eta i I/so i Is/scie ntists/?cid=n res 142 p2_054242
United States Department of Agriculture, Natural Resources Conservation Service.
2006. Land resource regions and major land resource areas of the United States,
the Caribbean, and the Pacific Basin. U.S. Department of Agriculture Handbook
296. http://www.nres.usda.gov/wps/portal/nres/detail/national/soils/?
cid = n res 142 p2_05 3624
United States Department of Agriculture, Soil Conservation Service. 1961. Land
capability classification. U.S. Department of Agriculture Handbook 210. http:H
www.nrcs.usda.gov/lnternet/FSE—DOCUMENTS/nrcsl 42p2_052290. pdf
27

BEFORE YOU DIG,
CALL
0
0
NORTH CAROLINA
&NE CALL CENTER
www.ncocc.org
EROSION CONTROL LEGEND
� r
I
(ll4Z/28 ab'NCONSTRUCTION ENTRANCE
} 1
HiWN (318D 'D'N SILT FENCE
_1M Am1
■--—i SILT FENCE OUTLET
e
OV
1
SKIMMER SEDIMENT BASIN
}� --a—TD TEMPORARY DIVERSION
W/ NAG DS150 EXCELSIOR MATTINGEj 1
1
CONCRETE TRUCK WASH —OUT 1
0�r
TEMPORARY SEEDING 1
1
TOTAL AREA DISTURBED - 19.93 AC 1
1
O
,-ag��w�ww-wagww�w-4w�i��s+ .,w 1
1
## ANN .,,i \6 1
wwiwwwww�w-wwrrt�wwwwwwwwwwwwwwww-w�wwR--^-+ww--w�
_.�.�
10.00
-MINN. Too I
3
O J
--=
r
(S
SIL T
FENCE
OUTLET
at
•� .. - �� 7 TD #¢
IS,
TD *'f
5.24 Ac.
IN:
SIL T
FENCE
OU TLET
a
ti
� 1 JB �
2 t�
�
1.64�.
� fr
5 Ate.
Ott
1
if 3
�.41 A..
♦ ` TD #2 i
its
' ��
VONCRETE
U e dl TRUCK
ASHOUT �.
L
C
Li
• —ID
STD TD #1 I m m
rAlPnF3
w w w w -.� TD —M—TD+ '�� �TO'�TD'FT0 -�
TD TD -
�r ww - TO i�SILT w i .r FENCE SIL TOUTLET FENCEOUTLET SKIMMER SEDIMENT BASIN SILT � PERMIT
TOP WID TH = 50' FENCE BOX WI TH � f
TOP LENGTH = 95' OUTLET 1 RAIN GAUGE 2
SURFACE AREA = 4,750 SF 1
BASIN VOLUME = 10,188 CF 1
BASIN DEPTH = 2.5' 1
SKIMMER SIZE = 2.5 1
ORIFICE SIZE = 1.8"
WEIR WIDTH -- 15' 1 pV!E
BAFFLES H� FFLES !3 � Nlow"s
Otag
1 DEWATTRING TIME= 3 DAYS �ag�Oto,r�� agsago
NSTRUC
O �as���asWasas on at so � EOTRANCETION =-r=agW soya, �
woo 10106100 go OR so 0
Otago-oagWagagagoag .'_� --_sogaam
olso at
so sic 0, 0 so on 101 go
0 so
agOtagagOtagat
aoo*
O
� 1 �
Y
0.
o�
SIL T
FENCE
OUTLET
SIL T
FENCE
OUTLET
SIL T
FENCE
OUTLET
S1L T
FENCE
OUTLET
O2 INSTALL POND OUTLET
STRUCTURE UPON INITIAL
CONSTRUCTION OF SEDIMENT
BASIN. SEE SHEET D-01
CONNECT SKIMMER TO RISER
BARREL.
USE WET POND STORAGE
AS SEDIMENT BASIN
SURFACE AREA = 10, 717 SF
BASIN VOLUME = 50,216 CF
BASIN DEPTH = 3.5'
SKIIdpdEl < SIZE E = .,
ORIFICE SIZE = 3.6"
WEIR WID TH = 15'
WEIR DEPTH = 0.75'
BAFFLES = 3
SIDESLOPES = 3. 1
DEWA TERING TIME = 3 DAYS
O
SCALE: 1" = 60'
0 60 120 150 180 210 240
I
E aosrow coNrtZo L.
RVpJvF:1: MAP
•
00 W
0 os
r ao
X
oM
m'�
0 N
d uO
N
W
z
O
T
M
0
c�
c�
z
r_
IJJ
z
z
z z
w
� U
0
WW3
LO
zin
o00
00
zN
<U
<z
z_j
f1% J
wV) W
000 z
BLN-C-1874
cm
Cj
wo
c
CO3 0
at
oca
C
CIO
%J1111111���
.�.(( C A A.,",,
■ C�`. € 4 FAO
. �p`Q 4F Ess�aN�` y�
SEAL
19843
/CNAEL S'`CN,.�
INITIAL EROSION
CONTROL PLAN
17'REVISIONS 1
FILE NO. 2021-028
HORZ, SCALE: 1 "=60'
VERT. SCALE: NONE
� E �
There Is therefore now no condemnation for those who are in Christ Jesus, For the law of the Spirit of life In Christ Jesus has set you free from the law of sin and death. — Romans 5:1
CE-19