SW6191202_Calculations_1/23/2020

MECE
ELECTRICAL CONSULTING ENGINEERS
Allendale Substation
1593 Lower Macedonia Rd.
Maxton, North Carolina 28364
ENGINEERING CALCULATIONS FOR:
Erosion Control
Storm Drainage System
Soils Information
Electrical Consulting Engineers
115 Oakland Avenue, Suite 102
Rock Hill, SC 29730
FIRM LICENSE NUMBER F-0429
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ELECTRICAL CONSULTING ENGINEERS / 115 OAKLAND AVE, SUITE 102
ROCK HILL, SC 29730 [phone]/ WWW.ECEPOWER.COM

Submitted: November 13, 2019
Project Narrative
MEEE
ELECTRICAL CONSULTING ENGINEERS
Allendale Substation is a proposed 115 W electrical substation and breaker station
located in Hoke County along Lower Macedonia Road. The 3.5-acre site is currently
being used as farmland. The scope of construction includes the proposed substation and
breaker station with associated washed gravel area, security fence and two driveway
connections. The total denuded area for the site is 2.9 acres. The project is located in the
Lumber River Basin.
The proposed stormwater conveyance will be achieved through sheet flow and perimeter
grassed swales. During the initial and final stages of construction, erosion control
measures will include erosion control fencing with outlets and diversion ditches. The
proposed project is "Low Density". See below calculations for Built -upon area (BUA)
that indicates project is "Low Density".
Built -upon area (Proposed)
Impervious Proposed = 0.04 acres
Impervious Existing = 0 acres
Total Area = 3.5 acres
Per North Carolina Administrative Code 15A NCAC 02H .1003(1)(b), Calculation of
Project Density is as follows:
Project Density = (Total BUA) / (Total Project Area)
= (0.04 acres) / (3.5 acres)
= 1.1%
Per above Calculations Project is "Low Density"
Onsite soils within the study area include Coxville loam, (Co), and Norfolk loam sand, 0
to 2 percent (MaA).
ELECTRICAL CONSULTING ENGINEERS / 115 OAKLAND AVE, SUITE 102
ROCK HILL, SC 29730 [phone]/ WWW.ECEPOWER.COM

MECE
ELECTRICAL CONSULTING ENGINEERS
SILT FENCE DRAINAGE AREA MAPS
ELECTRICAL CONSULTING ENGINEERS / 115 OAKLAND AVE, SUITE 102
ROCK HILL, SC 29730 [phone]/ WWW.ECEPOWER.COM

r:7LI-We7tF1
Precipitation Frequency Data Server
NOAA Atlas 14, Volume 2, Version 3
1'°
Location name: Red Springs, North Carolina, USA*
Latitude: 34.8384*, Longitude:-79.2986° � � ;
Elevation: 226.28 ft**
*source: ESRI Maps w,�w ^ y�
-source: USGS
POINT PRECIPITATION FREQUENCY ESTIMATES
G.M. Bonnin, D. Martin, B. Lin, T. Parzybok, M.Yekta, and D. Riley
NOAA, National Weather Service, Silver Spring, Maryland
PF tabular I PF graphical I Maps & aerials
PF tabular
PDS-based point precipitation frequency estimates with 90% confidence intervals (in inches)1
Average recurrence interval (years)
1
2
5
10
25
50
100
200
500
1000
0.434
0.512
0.599
0.664
0.744
0.803
0.860
0.913
0.981
1.03
5-min
(0.397-0.477)
(0.469-0.563)
(0.547-0.658)
(0.605-0.728)
(0.675-0.813)
(0.726-0.876)
(0.773-0.938)
(0.817-0.996)
(0.870-1.07)
(0.911-1.13)
0.694
0.819
0.959
1.06
1.19
1.28
1.37
1.45
1.55
1.63
10-min
(0.635-0.761)
(0.750-0.901)
(0.876-1.05)
(0.967-1.16)
1 (1.08-1.30)
1 (1.16-1.40)
1 (1.23-1.49)
1 (1.30-1.58)
(1.38-1.70)
(1.44-1.78)
0.867
1.03
1.21
1.34
1.50
1.62
1.73
1.83
1.95
2.05
15-min
(0.793-0.952)
(0.943-1.13)
1 (1.11-1.33)
1 (1.36-1.64)
1 (1.46-1.77)
1 (1.55-1.88)
1 (1.64-1.99)
(1.73-2.13)
(1.80-2.24)
1.19
1.42
1.72
1.95
2.23
2.44
2.64
2.84
3.11
3.31
30-min
(1.09-1.31)
1 (1.30-1.56)
1 (1.57-1.89)
(1.77-2.13)
1 (2.02-2.43)
1 (2.21-2.66)
1 (2.38-2.89)
1 (2.55-3.10)
(2.76-3.40)
(2.92-3.62)
1.48
1.79
2.21
2.54
2.96
3.30
3.64
3.99
4.46
4.83
60-min
(1.36-1.63)
(1.63-1.96)
(2.02-2.43)
(2.31-2.78)
(2.69-3.24)
(2.99-3.61)
(3.28-3.97)
(3.57-4.35)
(3.96-4.87)
(4.26-5.29)
1.72
2.08
2.62
3.05
3.62
4.07
4.54
5.02
5.67
6.19
2-hr
(1.56-1.90)
(1.89-2.30)
(2.38-2.90)
(2.76-3.36)
1 (3.26-3.99)
(3.66-4.49)
(4.05-5.00)
(4.45-5.52)
(4.97-6.23)
(5.38-6.81)
1.82
2.20
2.79
3.26
3.92
4.46
5.02
5.62
6.46
7.15
3-hr
(1.65-2.02)
(2.00-2.45)
(2.53-3.10)
(2.95-3.62)
(3.53-4.34)
(3.99-4.93)
(4.46-5.54)
(4.95-6.19)
(5.62-7.12)
(6.15-7.87)
2.17
2.63
3.33
3.90
4.71
5.37
6.07
6.81
7.87
8.73
6-hr
(1.97-2.41)
(2.39-2.91)
(3.03-3.68)
(3.53-4.31)
(4.23-5.18)
(4.79-5.90)
(5.38-6.66)
(5.98-7.46)
(6.82-8.61)
(7.48-9.55)
2.55
3.09
3.94
4.64
5.63
6.46
7.35
8.30
9.68
10.8
12-hr
(2.31-2.84)
(2.80-3.44)
(3.56-4.38)
(4.18-5.15)
(5.04-6.23)
(5.74-7.14)
(6.46-8.10)
(7.22-9.14)
(8.29-10.7)
(9.14-11.9)
3.04
3.68
4.68
5.48
6.59
7.48
8.41
9.38
10.7
11.8
24-hr
(2.82-3.28)
(3.42-3.97)
(4.34-5.05)
(5.07-5.90)
(6.07-7.09)
(6.87-8.05)
(7.69-9.05)
1 (8.55-10.1)
(9.72-11.5)
(10.6-12.7)
3.53
4.27
5.38
6.27
7.51
8.50
9.53
10.6
F 12.1
13.3
2-day
(3.30-3.79)
(3.98-4.59)
(5.01-5.78)
(5.82-6.74)
(6.94-8.06)
(7.83-9.12)
(8.75-10.2)
1 (9.69-11.4)
(11.0-13.0)
(12.0-14.3)
3.76
4.53
5.68
6.60
7.86
8.88
9.93
11.0
F 12.5
13.7
3-day
(3.52-4.02)
(4.24-4.85)
(5.30-6.08)
(6.14-7.05)
(7.30-8.40)
(8.21-9.49)
1 (9.15-10.6)
1 (10.1-11.8)
(11.4-13.5)
(12.5-14.8)
3.98
4.79
5.98
6.92
8.22
9.26
10.3
11.5
13.0
14.2
4-day
(3.74-4.25)
1 (4.49-5.11)
(5.59-6.37)
(6.47-7.37)
(7.65-8.75)
(8.59-9.87)
1 (9.56-11.0)
1 (10.5-12.2)
(11.9-13.9)
(13.0-15.2)
4.62
5.54
6.82
7.84
9.24
10.4
11.5
12.7
F 14.3
15.6
7-day
(4.33-4.93)
(5.19-5.91)
(6.38-7.28)
(7.32-8.36)
(8.60-9.85)
(9.62-11.1)
1 (10.7-12.3)
1 (11.7-13.6)
(13.1-15.3)
(14.3-16.8)
5.31
6.34
7.69
8.74
10.2
11.3
12.4
13.6
F 15.1
16.4
10-day
(5.00-5.64)
(5.97-6.73)
(7.24-8.15)
(8.22-9.27)
(9.53-10.8)
(10.5-12.0)
1 (11.6-13.2)
1 (12.6-14.4)
(14.0-16.1)
(15.1-17.4)
7.14
8.47
10.1
11.4
13.1
14.5
15.8
17.2
19.1
20.6
20-day
(6.76-7.55)
1 (8.02-8.95)
1 (9.56-10.7)
1 (12.3-13.9)
1 (13.6-15.3)
1 (14.8-16.7)
1 (16.1-18.2)
(17.7-20.2)
(19.0-21.8)
8.85
10.5
12.3
13.6
15.5
16.9
18.3
19.7
21.5
23.0
30-day
(8.40-9.33)
1 (9.91-11.0)
1 (11.6-12.9)
1 (12.9-14.4)
1 (14.6-16.3)
1 (15.9-17.8)
1 (17.2-19.3)
1 (18.5-20.8)
(20.1-22.8)
(21.4-24.4)
11.2
13.1
15.1
16.7
18.7
20.2
21.7
23.1
25.0
26.5
45-day
(10.6-11.8)
1 (12.5-13.8)
1 (14.4-15.9)
1 (17.7-19.7)
1 (19.1-21.2)
1 (20.4-22.8)
1 (21.8-24.4)
(23.5-26.4)
(24.8-28.0)
13.4
15.7
17.9
19.6
21.8
23.4
25.0
26.6
28.6
30.1
60-day
(12.7-14.0)
(14.9-16.5)
(17.0-18.8)
(18.6-20.6)
(20.7-22.9)
(22.2-24.6)
(23.7-26.3)
(25.1-28.0)
(26.9-30.2)
(28.3-31.8)
Precipitation frequency (PF) estimates in this table are based on frequency analysis of partial duration series (PDS).
Numbers in parenthesis are PF estimates at lower and upper bounds of the 90% confidence interval. The probability that precipitation frequency estimates (for
a given duration and average recurrence interval) will be greater than the upper bound (or less than the lower bound) is 5%. Estimates at upper bounds are
not checked against probable maximum precipitation (PMP) estimates and may be higher than currently valid PMP values.
Please refer to NOAA Atlas 14 document for more information.
Back to Top
PF graphical
https://hdsc.nws.noaa.gov/hdsc/pfds/pfds_printpage.html?lat=34.8384&Ion=-79.2986&data=depth&units=english&series=pds#maps 1 /4

8/6/2019 Precipitation Frequency Data Server
Pas -based depth -duration -frequency {DDF} curves
Latitude: 34.8384', Longitude:-79.2996'
ley
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1 2 5 10 25 50 100 200 500 1000
Average recurrence interval (years)
NOAA Atlas 14, Volume 2, Version 3 Created (GMT): Tue Aug 6 19:56:38 2019
Back to Top
Maps & aerials
Small scale terrain
Average recurrence
mlerva I
{years}
— 1
2
— 5
— 14
— 25
54
100
200
500
1000
Duration
— 6-min —
2-day
— 14-min —
3-day
15-min —
d-dmy
— 30-rnw —
7-day
— 6 Wain —
10-day
— 2fir —
20-day
— "r —
30-day
— 8fir —
45-day
— 12fir —
60-day
- 24--hr
https://hdsc.nws.noaa.gov/hdsc/pfds/pfds_printpage.htmI?Iat=34.8384&Ion=-79.2986&data=depth&units=engIish&series=pds#maps 2/4

8/6/2019
Precipitation Frequency Data Server
Large scale terrain
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https://hdsc.nws.noaa.gov/hdsc/pfds/pfds_printpage.htmI?tat=34.8384&Ion=-79.2986&data=depth&units=english&series=pds#maps 3/4

r:7L:iWelR1
Precipitation Frequency Data Server
Back to Top
US Department of Commerce
National Oceanic and Atmospheric Administration
National Weather Service
National Water Center
1325 East West Highway
Silver Spring, MD 20910
Questions?: [e-mail]
Disclaimer
https://hdsc.nws.noaa.gov/hdsc/pfds/pfds_printpage.htmI?Iat=34.8384&Ion=-79.2986&data=depth&units=english&series=pds#maps 4/4

BRYAN G. HAGLER @ JANET HAGLER
DEED BOOK 1117 PAGE 510
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MEEE
ELECTRICAL CONSULTING ENGINEERS
BUA MAP
ELECTRICAL CONSULTING ENGINEERS / 115 OAKLAND AVE, SUITE 102
ROCK HILL, SC 29730 [phone]/ WWW.ECEPOWER.COM

BUA LEGEND:
SYMBOL DESCRIPTION GRAPHIC
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BUILT UPON AREA (1,700 SF or 0.04 ACRES)
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THE INFORMATION ON THIS DRAWING IS PROPRIETARY
AND IS NOT TO BE USED, REPRODUCED, OR COPIED
WITHOUT THE WRITTEN CONSENT OF ELECTRICAL
CONSULTING ENGINEERS, INC.
BRYAN G. HAGLER & JANET HAGLE
DEED BOOK 1117 PAGE 510
PIN/ 1939090001007

MECE
ELECTRICAL CONSULTING ENGINEERS
SOILS INFORMATION
ELECTRICAL CONSULTING ENGINEERS / 115 OAKLAND AVE, SUITE 102
ROCK HILL, SC 29730 [phone]/ WWW.ECEPOWER.COM

Soil Map —Hoke County, North Carolina, and Robeson County, North Carolina
a (Allendale Substation and Breaker Station)
655770 6558M 655830 655860 655M 6559M
34o 50' 15" N
0
34o 50' 7" N
655770 655800 655830 655860 655890
Map Scale: 1:1,220 if printed on A portrait (8.5" x 11") sheet.
Meters
N 0 15 30 60 90
Feet
0 50 100 200 300
Map projection: Web Mercator Conermordinates: WGS84 Edge tics: lfrM Zone 17N WGS84
USDA Natural Resources Web Soil Survey
Conservation Service National Cooperative Soil Survey
M
655950
34o 50' 15" N
I
1
34o 50' 7" N
655950
M
7/25/2019
Pagel of 4

Soil Map —Hoke County, North Carolina, and Robeson County, North Carolina
(Allendale Substation and Breaker Station)
MAP LEGEND
Area of Interest (AOI)
0
Area of Interest (AOI)
Soils
Soil Map Unit Polygons
Soil Map Unit Lines
Soil Map Unit Points
Special
Point Features
Blowout
Borrow Pit
Clay Spot
Closed Depression
Gravel Pit
Gravelly Spot
0
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
o
Sodic Spot
Spoil Area
Stony Spot
fb
Very Stony Spot
V
Wet Spot
4�
Other
M�
Special Line Features
Water Features
Streams and Canals
Transportation
—
Rails
. 0
Interstate Highways
US Routes
Major Roads
Local Roads
Background
D6
Aerial Photography
MAP INFORMATION
The soil surveys that comprise your AOI were mapped at scales
ranging from 1:20,000 to 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: Hoke County, North Carolina
Survey Area Data: Version 15, Sep 10, 2018
Soil Survey Area: Robeson County, North Carolina
Survey Area Data: Version 16, Sep 10, 2018
Your area of interest (AOI) includes more than one soil survey
area. These survey areas may have been mapped at different
scales, with a different land use in mind, at different times, or at
different levels of detail. This may result in map unit symbols, soil
properties, and interpretations that do not completely agree
across soil survey area boundaries.
Soil map units are labeled (as space allows) for map scales
1:50,000 or larger.
Date(s) aerial images were photographed: Apr 22, 2015—Nov
28, 2017
USDA Natural Resources Web Soil Survey 7/25/2019
Conservation Service National Cooperative Soil Survey Page 2 of 4

Soil Map —Hoke County, North Carolina, and Robeson County, North Carolina
(Allendale Substation and Breaker Station)
MAP LEGEND
MAP INFORMATION
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
shiftina of map unit boundaries may be evident.
USDA Natural Resources Web Soil Survey 7/25/2019
Conservation Service National Cooperative Soil Survey Page 3 of 4

Soil Map —Hoke County, North Carolina, and Robeson County, North Carolina
Allendale Substation and Breaker
Station
Map Unit Legend
Map Unit Symbol
Map Unit Name
Acres in AOI
Percent of AOI
Co
Coxville loam
0.0
0.2%
NoA
Norfolk loamy sand, 0 to 2
percent slopes
0.3
9.0%
Subtotals for Soil Survey Area
0.3
9.2%
Totals for Area of Interest
3.5
100.0%
Map Unit Symbol
Map Unit Name
Acres in AOI
Percent of AOI
Co
Coxville loam
1.8
50.7%
MaA
Marlboro sandy loam, 0 to 2
percent slopes
1.4
40.1 %
Subtotals for Soil Survey Area
3.2
90.8%
Totals for Area of Interest
3.5
100.0%
USDA Natural Resources Web Soil Survey 7/25/2019
Conservation Service National Cooperative Soil Survey Page 4 of 4