Sheetz Shade Tree - Erosion Report 2024-05-15
SEDIMENT & EROSION CONTROL REPORT
SHEETZ – SHADE TREE LANE
MAY 15, 2024
PREPARED BY:
Timmons Group, NC License No. 023728
Patrick Barbeau, PE
5410 Trinity Road, Suite 102
Raleigh, North Carolina 27607
(919) 866-4512 | patric.barbeau@timmons.com
www.timmons.com
Sheetz – Shade Tree Lane
Wilmington, NC
Project Number: 64250.002
Table of Contents
Sediment & Erosion Control Narrative ............................................................................................................... 1
Project Information ......................................................................................................................................... 1
Proposed Site Improvements ......................................................................................................................... 1
Erosion Control Summary .............................................................................................................................. 1
NPDES/NCG01 Plan...................................................................................................................................... 1
Erosion Control Maintenance Plan ................................................................................................................. 1
Conclusion ..................................................................................................................................................... 1
Sediment & Erosion Control Calculations .......................................................................................................... 2
Sediment Basin Design .................................................................................................................................. 2
Temporary Diversion Ditch Sizing/Liner Calculations ..................................................................................... 2
Pipe Outlet Protection Calculations ................................................................................................................ 2
Maps ................................................................................................................................................................. 3
NOAA Rainfall Data ....................................................................................................................................... 3
USGS Map ..................................................................................................................................................... 3
FEMA FIRM Maps ......................................................................................................................................... 3
NRCS Soil Survey Map .................................................................................................................................. 3
Sheetz – Shade Tree Lane
Wilmington, NC
Project Number: 64250.002
1 | www.timmons.com
Sediment & Erosion Control Narrative
Project Information
The Sheetz – Shade Tree Lane project is located at 4915 Carolina Beach Road, Wilmington, North Carolina.
The property identification number (PIN) is as follows:
• R07100-003-024-000
The site consists of approximately 4.4 acres and is currently occupied by a landscaping company. The
property will be subdivided, and the resulting Sheetz property will be 2.76 acres (after ROW dedication). FIRM
Panel 3720313400K indicates the site is not within a special flood hazard area.
There is an existing jurisdictional stream on the property. Permits will be obtained to remove this stream.
Proposed Site Improvements
This project proposes a new 6,139 SF convenience store and gas canopy with associated parking lot and
utilities.
Erosion Control Summary
The total disturbed area is 5.0 acres. Most of the onsite impervious runoff will be conveyed towards a
temporary skimmer sediment basin while the remaining will be protected by silt fence and silt fence stone
outlets. After the site has been stabilized, the temporary skimmer basin will be dewatered and removed.
NPDES/NCG01 Plan
All construction activities shall comply with NCG01 permit guidelines on ground stabilization and materials
handling.
Erosion Control Maintenance Plan
A. All erosion and sediment control practices will be checked for stability and operation following every
runoff-producing rainfall, but in no case less than once every week. Any needed repairs will be made
immediately to maintain all practices as designed.
B. Sediment will be removed from the erosion control devices when storage capacity has been
approximately 50 percent filled.
C. All seeded areas will be fertilized, reseeded as necessary, and mulched according to specifications to
maintain a vigorous, dense vegetative cover.
D. Also refer to maintenance requirements listed for each device on plans.
Conclusion
Erosion control measures for this site have been designed in accordance with Fayetteville requirements and
the NCDEQ Erosion and Sediment Control Planning and Design Manual.
Sheetz – Shade Tree Lane
Wilmington, NC
Project Number: 64250.002
2 | www.timmons.com
Sediment & Erosion Control Calculations
Sediment Basin Design
Temporary Diversion Ditch Sizing/Liner Calculations
Pipe Outlet Protection Calculations
BASIN NAME
Basin 1 Sheetz - Shade Tree Ln
CALCULATED BY
John Hinsley 64250.002
BASIN NAME:
Modified Rational
Highest Elevation =21 feet
Inlet Elevation =13 feet
Difference =8 feet
Travel Length =468 feet
Time of Concentration
Length = 300 ft
Slope = 1.10 %
c-factor = 0.45
12.9 min
Length = 168 ft
H = 4.7 ft
1.7 min
Tc = 14.6 min
TC = 15 min
Intensity 10 year =6.63 in/hr
C =0.45
Disturbed Area =2.24 acres
Additional Drainage Area =0.72 acres
Total Drainage Area=2.96 acres
Q10 =8.83 cfs
*RED IS USER INPUT
Shallow Concentrated Tc =
Basin 1
Time of Concentration Calculation
PROJECT NAME
PROJECT NUMBER
Sheet
Flow
Sheet Flow Tc =
Shallow Concentrated
Flow
LATEST REVISION: 5/15/2024 7:24 AM
Sheetz - Shade Tree Ln
64250.002
Basin Name:
Disturbed Area:2.24 ac
Additional Drainage Area:0.72 ac
Total Drainage Area:2.96 ac
Runoff Coeff [Cc]:0.45
10-yr Rainfall Intensity [I]:6.63 in/hr
10-yr Discharge [Q10]:8.83 cfs
4032 Required Volume ft3 (Disturbed Area x 1800 cf/ac)
2870 Required Surface Area ft2
37.9 Suggested Width ft
75.8 Suggested Length ft
42 Width at Surface Area (ft)
84 Length at Surface Area (ft)L/W Ratio =2.0 Okay
3 Side Slope Ratio Z:1
2 Depth (ft)
30 Target Bottom Width (ft)
72 Target Bottom Length (ft)
2160 Target Bottom Area (ft2)
5640 Target Volume (ft3) Okay
3528 Target Surface Area (ft2)Okay
5582 Provided Volume (ft3)Okay
3458 Provided Surface Area (ft2)Okay
Skimmer Size
10 Emergency Spillway Width (ft)(Inches)
1 Depth of Flow (ft)1.5
30.0 Spillway Capacity (cfs)Okay 2
2.5
1.5 Skimmer Size (in)3
0.125 Head on Skimmer (ft)4
1.25 Orifice Size (1/4 inch increments)5
3.16 Dewatering Time (days)6
Suggest about 3 days 8
Elevation Area(sf)Depth(ft)Incr. Vol. (cf)
11.00 2152 0
12.00 2777 2465
13.00 3458 3118
Top of Embankment Elevation:14.50 ft
Emergency Spillway Elevation:13.00 ft
Embankment Width:8 ft
Bottom Elevation:11.00 ft
Cumulative Volume (cf)
0
2465
5582
0.00
1.00
2.00
(Q10 x 325)
PROJECT NAME
PROJECT NUMBER
BASIN NAME
Basin 1
CALCULATED BY
Sizing of Basin
John Hinsley
Sediment Basin Design
Basin 1 TYPE OF BASIN:SKIMMER
LATEST REVISION: 5/15/2024 7:24 AM
TDD100
Area (A) =0.23 (Acres)
Coef. (C) = 0.45 (Dimensionless)
Inte. (I) =6.63 (in/hr)
Flow (Q10) =0.7 (cfs)
Line channel with:6 " rip-rap (Assume 6" even if using grass)
Manning n =0.030 (Dimensionless)Ditch Length = 191.5 LF
Slope =0.042 (ft/ft)Highest Elevation = 21
Z Required =0.07 Ratio Lowest Elevation = 13
Side Slope (M) =3 :1
Flow Depth (Y) =0.50 ft 6.0 in
Bottom Width (B) =0.00 ft 0.0 in
Freeboard = 0.50 ft 6.0 in
T=YxDxS Y = Weight of water (62.4 LB/CUFT)
T = 1.30 LB/SF D=Depth of flow in channel (ft)
S=Slope of channel (ft/ft)
LB/SF
Jute Net 0.45 LB/SF
Curled Mat 1.55 S75 1.55
Class A (4"@9"THK)2.00 S150 1.75
Class B (8"@18"THK)3.50 SC150 2.10
Class I (12"@22"THK)5.00 C125 2.25
Class II (18"@30"THK)7.50 P300 8.00
New A =0.75 SF
New P =3.16 Wetted perimeter
New R =0.24 Hydraulic radius
Z Actual =0.29 Must be greater than z required=>0.07 Okay
New V =3.89 fps
Liner:1.55 LB/SF > 1.31 LB/SF Okay
Min. Ditch Depth = 1 ft
3
1
Side Slope
3:1
*RED IS USER INPUT
Ditch Liner
North American Green, S75
North American Green, S75
General Lining North American
Green Lining
Determine If Z Actual Is Greater Than Z Required
Minimum Design Geometry
Min. Ditch Depth (ft)
1.00
Bottom Width (ft)
Flow Depth (Y) = 0.5 ft
Ditch Geometry
Bottom Width (B) = 0 ft
Top Width (ft)Flow Depth (ft)
Drainage Ditch Design (Velocity Constraint)
PROJECT NAME
PROJECT NUMBER
64250.002
DITCH NAME
CALCULATED BY
John Hinsley
Sheetz - Shade Tree Lane
0.00 0.50 6
TEMPORARY DIVERSION DITCH:TDD100
Top Width = 6 ft
Variable Quantities (Ditch Width & Depth)
This worksheet is designed to determine channel lining based on flow and ditch geometry (base width, side
slope, & channel slope). This program determines depth of flow, velocity and tractive force assuming n=0.03
for grass or rip rap (n can be varied if desired). (Vary depth until z actual equals z required; v & t will be
correct; select appropriate lining based on tractive force)
Watershed Data
Known Quantities
Compute Tractive Force
LATEST REVISION: 5/15/2024 7:25 AM
CALCULATED BY
Alex May
Pipe Diameter =18 in From Fig. 8.06.c:ZONE =1
Pipe Slope =0.01 ft/ft
Mannings n =0.013 Rip Rap Class =A
Velocity Flowing Full =5.96 fps Apron Thickness =12 in
Apron Length =6.0 ft
Apron Width = 3xDia.=4.5 ft
From Fig. 8.06.e:
Pipe Diameter =15 in From Fig. 8.06.c:ZONE =1
Pipe Slope =0.001 ft/ft
Mannings n =0.013 Rip Rap Class =A
Velocity Flowing Full =1.67 fps Apron Thickness =12 in
Apron Length =5.0 ft
Apron Width = 3xDia.=3.8 ft
From Fig. 8.06.e:
Structure Name:FE120
CCAC Building Solutions
PROJECT NAME
Pipe Outlet Protection (NYDOT Method)
Structure Name:FE300
42929
PROJECT NUMBER
LATEST REVISION: 5/15/2024 11:44 AM
Sheetz – Shade Tree Lane
Wilmington, NC
Project Number: 64250.002
3 | www.timmons.com
Maps
NOAA Rainfall Data
USGS Map
FEMA FIRM Maps
NRCS Soil Survey Map
NOAA Atlas 14, Volume 2, Version 3
Location name: Wilmington, North Carolina, USA*
Latitude: 34.1515°, Longitude: -77.9033°
Elevation: 16 ft**
* source: ESRI Maps
** 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 | PF_graphical | Maps_&_aerials
PF tabular
PDS-based point precipitation frequency estimates with 90% confidence intervals (in inches/hour)1
Duration Average recurrence interval (years)
1 2 5 10 25 50 100 200 500 1000
5-min 6.36(5.93‑6.86)7.56(7.04‑8.16)8.84(8.22‑9.52)9.83(9.11‑10.6)11.1(10.2‑11.9)12.0(11.1‑13.0)13.0(11.9‑14.0)14.0(12.7‑15.1)15.3(13.7‑16.5)16.3(14.5‑17.7)
10-min 5.08
(4.73‑5.48)
6.05
(5.63‑6.52)
7.08
(6.58‑7.63)
7.86
(7.28‑8.47)
8.84
(8.15‑9.50)
9.59
(8.81‑10.3)
10.4
(9.45‑11.1)
11.1
(10.1‑12.0)
12.1
(10.9‑13.1)
12.9
(11.4‑13.9)
15-min 4.23
(3.94‑4.57)
5.07
(4.72‑5.47)
5.97
(5.55‑6.43)
6.63
(6.14‑7.14)
7.47
(6.89‑8.03)
8.10
(7.44‑8.72)
8.72
(7.96‑9.39)
9.34
(8.46‑10.1)
10.1
(9.10‑11.0)
10.8
(9.58‑11.7)
30-min 2.90
(2.70‑3.13)
3.50
(3.26‑3.78)
4.24
(3.94‑4.57)
4.80
(4.45‑5.18)
5.53
(5.10‑5.95)
6.10
(5.60‑6.56)
6.68
(6.10‑7.19)
7.27
(6.59‑7.83)
8.07
(7.24‑8.72)
8.72
(7.76‑9.44)
60-min 1.81
(1.68‑1.95)
2.20
(2.04‑2.37)
2.72
(2.53‑2.93)
3.13
(2.90‑3.37)
3.68
(3.40‑3.96)
4.13
(3.80‑4.45)
4.60
(4.20‑4.95)
5.10
(4.62‑5.49)
5.79
(5.20‑6.26)
6.36
(5.66‑6.89)
2-hr 1.07(0.985‑1.17)1.31(1.20‑1.43)1.66(1.53‑1.81)1.96(1.79‑2.13)2.38(2.17‑2.59)2.74(2.48‑2.98)3.13(2.82‑3.41)3.56(3.19‑3.87)4.19(3.71‑4.57)4.73(4.16‑5.18)
3-hr 0.760
(0.699‑0.835)
0.926
(0.852‑1.02)
1.18
(1.09‑1.30)
1.40
(1.28‑1.54)
1.73
(1.57‑1.89)
2.02
(1.82‑2.20)
2.33
(2.09‑2.55)
2.68
(2.38‑2.92)
3.21
(2.82‑3.50)
3.67
(3.18‑4.02)
6-hr 0.476
(0.437‑0.525)
0.580
(0.534‑0.641)
0.743
(0.681‑0.819)
0.884
(0.806‑0.972)
1.09
(0.990‑1.20)
1.28
(1.15‑1.40)
1.48
(1.32‑1.62)
1.71
(1.51‑1.87)
2.06
(1.79‑2.26)
2.37
(2.04‑2.60)
12-hr 0.277
(0.252‑0.308)
0.338
(0.307‑0.375)
0.436
(0.396‑0.484)
0.521
(0.471‑0.577)
0.649
(0.581‑0.717)
0.762
(0.679‑0.840)
0.890
(0.786‑0.980)
1.03
(0.904‑1.14)
1.26
(1.08‑1.38)
1.45
(1.23‑1.60)
24-hr 0.164
(0.149‑0.182)
0.199
(0.181‑0.221)
0.257
(0.234‑0.286)
0.309
(0.280‑0.343)
0.388
(0.348‑0.431)
0.459
(0.408‑0.509)
0.539
(0.474‑0.599)
0.632
(0.547‑0.703)
0.775
(0.656‑0.868)
0.902
(0.750‑1.02)
2-day 0.096(0.088‑0.106)0.116(0.106‑0.128)0.149(0.136‑0.165)0.178(0.162‑0.197)0.221(0.199‑0.245)0.260(0.232‑0.289)0.304(0.268‑0.338)0.353(0.307‑0.395)0.429(0.365‑0.483)0.496(0.415‑0.562)
3-day 0.068
(0.062‑0.074)
0.082
(0.075‑0.090)
0.104
(0.095‑0.115)
0.124
(0.113‑0.137)
0.153
(0.138‑0.169)
0.179
(0.160‑0.198)
0.207
(0.183‑0.230)
0.240
(0.209‑0.267)
0.289
(0.247‑0.325)
0.333
(0.280‑0.376)
4-day 0.053
(0.049‑0.059)
0.064
(0.059‑0.071)
0.082
(0.075‑0.090)
0.097
(0.088‑0.107)
0.119
(0.107‑0.131)
0.138
(0.124‑0.152)
0.159
(0.141‑0.176)
0.183
(0.160‑0.203)
0.219
(0.188‑0.246)
0.251
(0.212‑0.284)
7-day 0.035
(0.032‑0.038)
0.042
(0.039‑0.046)
0.053
(0.049‑0.058)
0.062
(0.057‑0.068)
0.075
(0.069‑0.082)
0.087
(0.079‑0.095)
0.099
(0.089‑0.108)
0.112
(0.100‑0.123)
0.132
(0.115‑0.146)
0.149
(0.128‑0.166)
10-day 0.027
(0.025‑0.030)
0.033
(0.030‑0.036)
0.041
(0.038‑0.044)
0.047
(0.044‑0.051)
0.057
(0.052‑0.062)
0.065
(0.059‑0.071)
0.074
(0.067‑0.081)
0.084
(0.075‑0.091)
0.097
(0.086‑0.107)
0.109
(0.095‑0.121)
20-day 0.018(0.017‑0.019)0.022(0.020‑0.023)0.026(0.025‑0.029)0.030(0.028‑0.033)0.036(0.033‑0.039)0.041(0.038‑0.044)0.046(0.042‑0.050)0.051(0.046‑0.056)0.059(0.052‑0.064)0.065(0.057‑0.072)
30-day 0.015
(0.014‑0.016)
0.018
(0.017‑0.019)
0.021
(0.020‑0.023)
0.024
(0.023‑0.026)
0.028
(0.026‑0.030)
0.032
(0.029‑0.034)
0.035
(0.032‑0.038)
0.038
(0.035‑0.041)
0.043
(0.039‑0.047)
0.047
(0.042‑0.052)
45-day 0.012
(0.011‑0.013)
0.014
(0.014‑0.015)
0.017
(0.016‑0.018)
0.019
(0.018‑0.021)
0.023
(0.021‑0.024)
0.025
(0.023‑0.027)
0.028
(0.025‑0.030)
0.030
(0.028‑0.032)
0.034
(0.031‑0.036)
0.037
(0.033‑0.040)
60-day 0.011
(0.010‑0.012)
0.013
(0.012‑0.014)
0.015
(0.014‑0.016)
0.017
(0.016‑0.018)
0.019
(0.018‑0.021)
0.021
(0.020‑0.023)
0.023
(0.022‑0.025)
0.025
(0.023‑0.027)
0.028
(0.025‑0.030)
0.030
(0.027‑0.032)
1 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 (fora 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 notchecked 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
5/9/24, 9:30 AM Precipitation Frequency Data Server
https://hdsc.nws.noaa.gov/pfds/pfds_printpage.html?lat=34.1515&lon=-77.9033&data=intensity&units=english&series=pds 1/3
National Flood Hazard Layer FIRMette
0 500 1,000 1,500 2,000250
Feet
Ü
SEE FIS REPORT FOR DETAILED LEGEND AND INDEX MAP FOR FIRM PANEL LAYOUT
SPECIAL FLOODHAZARD AREAS
Without Base Flood Elevation (BFE)Zone A, V, A99With BFE or DepthZone AE, AO, AH, VE, AR
Regulatory Floodway
0.2% Annual Chance Flood Hazard, Areasof 1% annual chance flood with averagedepth less than one foot or with drainageareas of less than one square mileZone X
Future Conditions 1% Annual
Chance Flood HazardZone X
Area with Reduced Flood Risk due to
Levee. See Notes.Zone X
Area with Flood Risk due to LeveeZone D
NO SCREENArea of Minimal Flood Hazard Zone X
Area of Undetermined Flood HazardZone D
Channel, Culvert, or Storm Sewer
Levee, Dike, or Floodwall
Cross Sections with 1% Annual Chance
17.5 Water Surface Elevation
Coastal Transect
Coastal Transect Baseline
Profile Baseline
Hydrographic Feature
Base Flood Elevation Line (BFE)
Effective LOMRs
Limit of Study
Jurisdiction Boundary
Digital Data Available
No Digital Data Available
Unmapped
This map complies with FEMA's standards for the use of
digital flood maps if it is not void as described below.The basemap shown complies with FEMA's basemapaccuracy standards
The flood hazard information is derived directly from theauthoritative NFHL web services provided by FEMA. This mapwas exported on 5/15/2024 at 8:07 AM and does notreflect changes or amendments subsequent to this date andtime. The NFHL and effective information may change orbecome superseded by new data over time.
This map image is void if the one or more of the following map
elements do not appear: basemap imagery, flood zone labels,
legend, scale bar, map creation date, community identifiers,
FIRM panel number, and FIRM effective date. Map images for
unmapped and unmodernized areas cannot be used for
regulatory purposes.
Legend
OTHER AREAS OF
FLOOD HAZARD
OTHER AREAS
GENERAL
STRUCTURES
OTHER
FEATURES
MAP PANELS
8
B 20.2
The pin displayed on the map is an approximatepoint selected by the user and does not representan authoritative property location.
1:6,000
77°54'31"W 34°9'19"N
77°53'54"W 34°8'49"N
Basemap Imagery Source: USGS National Map 2023
United States
Department of
Agriculture
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
New Hanover
County, North
Carolina
Natural
Resources
Conservation
Service
May 8, 2024
6
Custom Soil Resource Report
Soil Map
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232200 232240 232280 232320 232360 232400
232200 232240 232280 232320 232360 232400
34° 9' 10'' N
77
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34° 9' 10'' N
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34° 8' 59'' N
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34° 8' 59'' N
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N
Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 18N WGS84
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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: New Hanover County, North Carolina
Survey Area Data: Version 25, Sep 13, 2023
Soil map units are labeled (as space allows) for map scales
1:50,000 or larger.
Date(s) aerial images were photographed: Nov 8, 2022—Dec 1,
2022
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.
Custom Soil Resource Report
7
Map Unit Legend
Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI
Le Leon sand 3.0 51.0%
Ly Lynn Haven fine sand 1.9 33.0%
St Stallings fine sand 0.9 15.9%
Totals for Area of Interest 5.9 100.0%
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
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,
Custom Soil Resource Report
8
17
Custom Soil Resource Report
Map—Hydrologic Soil Group
37
8
2
6
0
0
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0
232200 232240 232280 232320 232360 232400
232200 232240 232280 232320 232360 232400
34° 9' 10'' N
77
°
5
4
'
1
7
'
'
W
34° 9' 10'' N
77
°
5
4
'
7
'
'
W
34° 8' 59'' N
77
°
5
4
'
1
7
'
'
W
34° 8' 59'' N
77
°
5
4
'
7
'
'
W
N
Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 18N WGS84
0 50 100 200 300
Feet
0 20 40 80 120
Meters
Map Scale: 1:1,590 if printed on A portrait (8.5" x 11") sheet.
Soil Map may not be valid at this scale.
MAP LEGEND MAP INFORMATION
Area of Interest (AOI)
Area of Interest (AOI)
Soils
Soil Rating Polygons
A
A/D
B
B/D
C
C/D
D
Not rated or not available
Soil Rating Lines
A
A/D
B
B/D
C
C/D
D
Not rated or not available
Soil Rating Points
A
A/D
B
B/D
C
C/D
D
Not rated or not available
Water Features
Streams and Canals
Transportation
Rails
Interstate Highways
US Routes
Major Roads
Local Roads
Background
Aerial Photography
The soil surveys that comprise your AOI were mapped at
1:15,800.
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: New Hanover County, North Carolina
Survey Area Data: Version 25, Sep 13, 2023
Soil map units are labeled (as space allows) for map scales
1:50,000 or larger.
Date(s) aerial images were photographed: Nov 8, 2022—Dec 1,
2022
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.
Custom Soil Resource Report
18
Table—Hydrologic Soil Group
Map unit symbol Map unit name Rating Acres in AOI Percent of AOI
Le Leon sand A/D 3.0 51.0%
Ly Lynn Haven fine sand A/D 1.9 33.0%
St Stallings fine sand A/D 0.9 15.9%
Totals for Area of Interest 5.9 100.0%
Rating Options—Hydrologic Soil Group
Aggregation Method: Dominant Condition
Component Percent Cutoff: None Specified
Tie-break Rule: Higher
Custom Soil Resource Report
19