20191125 Ver 1_2019-04-11_Storm_Report_20190822

Stormwater Design Report
NC 16 (Providence Road)
State Route 1315 (New Town Road)
Intersection Improvements
Union County, North Carolina
NC 16 (Providence Road)
State Route 1315 (New Town Road)
Prepared for:
NCDOT
©Kimley-Horn and Associates, Inc., 2019
Date: 4/11 /2019
Kim ley Horn

This document, together with the concepts and designs presented herein, as an instrument of service, is
intended only for the purpose and client for which it was prepared. Reuse of and improper reliance on this
document without written authorization and adaptation by Kimley-Horn and Associates, Inc. shall be without
liability to Kimley-Horn and Associates, Inc.

TABLE OF CONTENTS
1. PROJECT OVERVIEW
2. CHAPTER NARRATIVE
2.1. Existing Conditions
2.2. Proposed Conditions
2.3. Methodology/Design Criteria
2.4. Pre vs Post Summary
3. REFERENCES
4. APPENDIX
4.1.
APPENDIX A
— Vicinity Map
4.2.
APPENDIX B
— Soil Map, FEMA FIRMette, and Wetland Display
4.3.
APPENDIX C
— NCDOT Rainfall Intensity
4.4.
APPENDIX D
— Existing Drainage Map
4.5.
APPENDIX E — Existing Drainage Modeling (Link, Node, and Spread analysis)
4.6.
APPENDIX F —
Proposed Drainage Map
4.7.
APPENDIX G
— Proposed Drainage Modeling (Link, Node, and Spread analysis)

1. OVERVIEW
This report has been prepared to support the build -out conditions for the proposed intersection improvement
project in Union County, NC. See Figure 1 "Vicinity Map" for a map that defines the proposed project areas.
The proposed facility improvements include:
NC 16 (Providence Road) & State Route 1315 (New Town Road)
• Installation of a southbound right -turn lane on NC 16 (Providence Road) with approximately 220 feet
of storage and appropriate tapers.
• Extension of the existing southbound left -turn lane on NC 16 (Providence Road) 140 feet for a total of
300 feet of storage.
• Installation of an eastbound right -turn lane on State Route 1315 (New Town Road) with approximately
220 feet of storage and appropriate tapers, which includes a raised concrete island. It is assumed that
the widening for this improvement will occur to the north of 1315 (New Town Road).
• Extension of the existing eastbound left -turn lane on 1315 (New Town Road) to the first driveway west
of NC 16 (Providence Road).
Extension of the existing westbound left -turn lane on 1315 (New Town Road) resulting in
approximately 275 feet of storage and appropriate tapers.
NC 16 (Providence Road) & Driveway #1
• Installation of a westbound right -turn lane on Driveway #1 with approximately 125 feet of storage and
appropriate tapers.
• Re -striping of the southbound left -turn lane on NC 16 (Providence Road) to provide 325 feet of
storage.
• Re -striping of the northbound right -turn lane on NC 16 (Providence Road) to provide 175 feet of
storage.
• Provide a three lane driveway connection to NC 16 (Providence Road) to approximately the right-of-
way limits.
NC 16 (Providence Road) & Driveway #2
• Installation of a concrete median along NC 16 (Providence Road) to make the access right-in/right-out
only.
• Provide a two-lane driveway connection to NC 16 (Providence Road) to approximately the right-of-way
limits.
NC 16 (Providence Road) & Driveway #3
• Installation of a westbound left -turn lane on NC 16 (Providence Road) with approximately 150 feet of
storage and appropriate tapers.
• Installation of an eastbound right -turn slip lane on NC 16 (Providence Road) into the site.
• Installation of a concrete median along 1315 (New Town Road) to restrict the left -out movement from
the site.
• Provide a two-lane driveway connection to 1315 (New Town Road) to approximately the right-of-way
limits.
NC 16 (Providence Road) & Driveway #4
• Installation of a westbound left -turn lane on NC 16 (Providence Road) with approximately 150 feet of
storage and appropriate tapers.
• Provide a three -lane driveway connection to 1315 (New Town Road) to approximately the right-of-way
limits.

This report contains the approach and results of the stormwater analysis including closed drainage analysis,
spread analysis, and pre vs post conditions analysis.
The overall goal of the stormwater analysis was to analyze the drainage system within the project limits with
respect to current NCDOT 2016 "Guidelines for Drainage Studies and Hydraulic Design" and design to those
standards.

2. CHAPTER NARRATIVE
This report contains the approach and results of the storm water analysis/design conducted for the intersection
improvements at NC 16 (Providence Road) and State Route 1315 (New Town Road) in Union County, NC.
2.1 Existing Conditions
The intersection consists of 4 approaches. The SB approach is NC 16 (Providence Road). The NB approach is
NC 16 (Providence Road). The EB approach is State Route 1315 (New Town Road). The WB approach is
State Route 1315 (New Town Road). Each road is mainly shoulder sections with a small curb and gutter
section along the west side of the SB approach of NC 16 (Providence Road) and the south side of the EB
approach of State Route 1315 (New Town Road). There is a closed drainage system fed by inlets in the
developments along the EB approach of State Route 1315 (New Town Road) that drains to the Northeast
quadrant of the intersection. All other drainage is conveyed by driveway pipes and culverts the eventually drain
to the south side of the end of the project along State Route 1315 (New Town Road).
The existing storm system was investigated through a visit to the site and with the survey that was provided.
Survey was primarily used to catch basin and manhole locations, rim and invert elevations. Some elevations
could not be obtained due to the debris in the catch basins and the buried junction boxes.
Research was done into FEMA, wetlands and soils (See Appendix B) and was found that there we no major
environmental concerns within the project limits.
2.2 Proposed Conditions
The proposed roadway improvements include the resurfacing of each road as well as geometry changes such as
widening, turn radius improvements, curb and gutter additions, and median improvements. The roads replace
the open drainage system with and closed drainage system that will keep the outfall of the existing system the
same.
The intent of this design is to replace the existing open system with a closed system but to keep the outfalls of
the existing system intact. The widening along NC 16 (Providence Road) will add 12 new catch basins, all
tying onto existing culvert crossing. The widening along State Route 1315 (New Town Road) will add 32 new
catch basins and 2 drop inlets, all tying onto existing culvert crossing.
2.3 Methodology/Design Criteria
Topographic survey information for the site was provided by RB Pharr. This data, in addition to GIS
topographic information and field observations conducted on the project site, was used to identify the
contributing drainage areas, and historic drainage patterns.
Drainage areas were calculated using GIS contours in areas where the limits extended beyond surveyed data.
Peak discharges were calculated using the Rational Method. Recurrence intervals were applied to the 10, 25,
50, and 100-year storm events. The 10 year storm was used to calculate the spread of the runoff to check for
adequacy. Composite `C' values were calculated using existing and proposed ground cover. Time of

concentration (T.) was calculated using the velocity method in the NRCS TR-55 manual (with a minimum Tc of
5 minutes).
2.4 Pre vs Post Summary
The modeling of the proposed inlet and pipes was an iterative process. Changing locations of inlets to capture
spread and changing pipe slope to accommodate capacity. Both the inlets and pipes were designed to handle the
10 year peak discharge per the NCDOT 2016 "Guidelines for Drainage Studies and Hydraulic Design". The
new pipes meet the requirements based on the additional flow to the system by the additional impervious area
created by the widening project. For all calculations see Appendix D through Appendix G.
OEP 48" RCP
SYSTEM
Existing System
Proposed System
% increase
OUTLET
CFS
Flow/Max Flow
CFS
Flow/Max Flow
10 yr
92.094
0.449
98.492
0.480
6.95%

3. REFERENCES
`Bentley GEOPAK V8i (SELECTseries 2) 08.11.07.427", by Bentley Systems, Inc, 2009
"Hydraulic Engineering Circular No. 22, Third Edition URBAN DRAINAGE DESIGN MANUAL", by U.S.
Department of Transportation Federal Highway Administration
"NCDOT Instruction Manual for GEOPAK Drainage" March 12, 2009
"NCDOT 2016 Guidelines for Drainage Studies and Hydraulic Design" November 21, 2016
"National Wetlands Inventory" Available at: https://www.fws.gov/wetlands/data/Mgoer.htn-1
"USDA Web Soil Survey" Available at: http://websoilsurvey.nres.usda.gov/app/WebSoilSurvgy.aVx October,
2016
"FEMA Issued Flood Maps (FIRMS) and Flood Insurance Studies (FIS)" Available at:
http://msc.fema.gov/portal/advanceSearch#searchresultsanchor October, 2016
4. APPENDIX
Appendix A
— Vicinity Map
Appendix B —
Soil Map, FEMA FIRMette, and Wetland Display
Appendix C
— NCDOT Rainfall Intensity
Appendix D
— Existing Drainage Map
Appendix E —
Existing Drainage Modeling (Link, Node, and Spread analysis)
Appendix F —
Proposed Drainage Map
Appendix G
— Proposed Drainage Modeling (Link, Node, and Spread analysis)

APPENDIX A
Vicinity Map

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Kim e PHONE [phone] ©2019
THIS DOCUMENT, TOGETHER WITH THE CONCEPTS AND DESIGNS PRESENTED HEREIN, AS AN INSTRUMENT OF SERVICE, IS INTENDED ONLY FOR THE SPECIFIC PURPOSE AND CLIENT FOR WHICH IT WAS PREPARED. REUSE OF AND IMPROPER RELIANCE ON THIS DOCUMENT WITHOUT WRITTEN AUTHORIZATION AND ADAPTATION BY KIMLEY-HORN AND ASSOCIATES, INC. SHALL BE WITHOUT LIABILITY TO KIMLEY-HORN AND ASSOCIATES, INC.

APPENDIX B
Soil Map, FEMA FIRMette, and Wetland Display

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
Union County,
North Carolina
April 11, 2019

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://offices.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
2

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.
3

Contents
Preface....................................................................................................................
2
How Soil Surveys Are Made..................................................................................5
SoilMap..................................................................................................................
8
SoilMap................................................................................................................9
Legend................................................................................................................10
MapUnit Legend................................................................................................
11
MapUnit Descriptions.........................................................................................11
Union County, North Carolina.........................................................................
14
ApB—Appling sandy loam, 2 to 8 percent slopes .......................................
14
CeB2—Cecil gravelly sandy clay loam, 2 to 8 percent slopes,
moderately eroded................................................................................15
CeC2—Cecil gravelly sandy clay loam, 8 to 15 percent slopes,
moderately eroded................................................................................16
ChA—Chewacla silt loam, 0 to 2 percent slopes, frequently flooded ..........
17
CmB—Cid channery silt loam, 1 to 5 percent slopes..................................18
GfB2—Georgeville silty clay loam, 2 to 8 percent slopes, moderately
eroded...................................................................................................19
HeB—Helena fine sandy loam, 2 to 8 percent slopes.................................20
IrA—Iredell loam, 0 to 3 percent slopes ......................................................
22
TaB—Tarrus gravelly silt loam, 2 to 8 percent slopes..................................23
TaC—Tarrus gravelly silt loam, 8 to 15 percent slopes ...............................
24
TbB2—Tarrus gravelly silty clay loam, 2 to 8 percent slopes,
moderately eroded................................................................................25
W—Water....................................................................................................
26
WyB—Wynott gravelly loam, 2 to 8 percent slopes ....................................
26
References............................................................................................................
28
4

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
5

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
0

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.
7

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.
0

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MAP LEGEND
Area of Interest (AOI)
Area of Interest (AOI)
Soils
Soil Map Unit Polygons
rwr
Soil Map Unit Lines
0
Soil Map Unit Points
Special
Point Features
{J
Blowout
Borrow Pit
Clay Spot
Closed Depression
Gravel Pit
.4
Gravelly Spot
0
Landfill
Lava Flow
Marsh or swamp
+
Mine or Quarry
Miscellaneous Water
Perennial Water
IV
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
Please rely on the bar scale on each map sheet for map
measurements.
Wet Spot
.A
Other
Source of Map: Natural Resources Conservation Service
Web Soil Survey URL:
.-
Special Line Features
Coordinate System: Web Mercator (EPSG:3857)
Water Features
Streams and Canals
Maps from the Web Soil Survey are based on the Web Mercator
projection, which preserves direction and shape but distorts
Transportation
distance and area. A projection that preserves area, such as the
#_F_+
Rails
Albers equal-area conic projection, should be used if more
r•,,r
Interstate Highways
accurate calculations of distance or area are required.
US Routes
This product is generated from the USDA-NRCS certified data as
Major Roads
of the version date(s) listed below.
Local Roads
Soil Survey Area: Union County, North Carolina
Background
Survey Area Data: Version 18, Sep 10, 2018
Im
Aerial Photography
Soil map units are labeled (as space allows) for map scales
1:50,000 or larger.
Date(s) aerial images were photographed: Jul 18, 2011—Nov
25, 2017
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
ApB
Appling sandy loam, 2 to 8
64.1
6.4%
percent slopes
Cecil gravelly sandy clay loam,
CeB2
324.0
32.3%
2 to 8 percent slopes,
moderately eroded
CeC2
Cecil gravelly sandy clay loam,
83.0
8.3%
8 to 15 percent slopes,
moderately eroded
ChA
Chewacla silt loam, 0 to 2
43.9
4.4%
percent slopes, frequently
flooded
CmB
Cid channery silt loam, 1 to 5
9.3
0.9%
percent slopes
GfB2
Georgeville silty clay loam, 2 to
82.3
8.2%
8 percent slopes, moderately
eroded
HeB
Helena fine sandy loam, 2 to 8
168.9
16.8%
percent slopes
IrA
Iredell loam, 0 to 3 percent
26.7
2.7%
slopes
TaB
Tarrus gravelly silt loam, 2 to 8
22.8
2.3%
percent slopes
TaC
Tarrus gravelly silt loam, 8 to 15
99.8
10.0%
percent slopes
TbB2
Tarrus gravelly silty clay loam, 2
59.6
5.9%
to 8 percent slopes,
moderately eroded
W
Water
10.9
1.1 %
WyB
Wynott gravelly loam, 2 to 8
7.3
0.7%
percent slopes
1,002.5
100.0%
Totals for Area of Interest
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
11

Custom Soil Resource Report
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
Iandform 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
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Custom Soil Resource Report
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.
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Custom Soil Resource Report
Union County, North Carolina
ApB—Appling sandy loam, 2 to 8 percent slopes
Map Unit Setting
National map unit symbol: 3wOb
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
Appling and similar soils: 90 percent
Minor components: 7 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Appling
Setting
Landform: I nterfluves
Landform position (two-dimensional): Summit
Landform position (three-dimensional): Interfluve
Down -slope shape: Convex
Across -slope shape: Convex
Parent material: Saprolite derived from granite and gneiss and/or schist
Typical profile
Ap - 0 to 6 inches: sandy loam
E - 6 to 9 inches: sandy loam
BE - 9 to 12 inches: sandy clay loam
Bt - 12 to 48 inches: clay
BC - 48 to 53 inches: sandy clay loam
C - 53 to 80 inches: sandy clay loam
Properties and qualities
Slope: 2 to 8 percent
Depth to restrictive feature: More than 80 inches
Natural 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 storage in profile: Moderate (about 8.9 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 2e
Hydrologic Soil Group: B
Hydric soil rating: No
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Custom Soil Resource Report
Minor Components
Vance
Percent of map unit: 5 percent
Landform: Interfluves
Landform position (two-dimensional): Summit
Landform position (three-dimensional): Interfluve
Down -slope shape: Convex
Across -slope shape: Convex
Hydric soil rating: No
Helena
Percent of map unit: 2 percent
Landform: Ridges
Landform position (two-dimensional): Summit, footslope
Down -slope shape: Concave
Across -slope shape: Concave
Hydric soil rating: No
CeB2—Cecil gravelly sandy clay loam, 2 to 8 percent slopes, moderately
eroded
Map Unit Setting
National map unit symbol: 2mx87
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
Cecil, moderately eroded, and similar soils: 85 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Cecil, Moderately Eroded
Setting
Landform: I nterfluves
Landform position (two-dimensional): Summit
Landform position (three-dimensional): Interfluve
Down -slope shape: Convex
Across -slope shape: Convex
Parent material: Saprolite derived from granite and gneiss and/or schist
Typical profile
Ap - 0 to 6 inches: gravelly sandy clay loam
Bt - 6 to 40 inches: clay
BC - 40 to 55 inches: clay loam
C - 55 to 80 inches: sandy loam
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Custom Soil Resource Report
Properties and qualities
Slope: 2 to 8 percent
Depth to restrictive feature: More than 80 inches
Natural 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 storage in profile: Moderate (about 8.2 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 2e
Hydrologic Soil Group: B
Hydric soil rating: No
CeC2—Cecil gravelly sandy clay loam, 8 to 15 percent slopes,
moderately eroded
Map Unit Setting
National map unit symbol: 2mx89
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
Cecil, moderately eroded, and similar soils: 80 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Cecil, Moderately Eroded
Setting
Landform: Interfluves
Landform position (two-dimensional): Summit, shoulder
Landform position (three-dimensional): Interfluve
Down -slope shape: Convex
Across -slope shape: Convex
Parent material: Saprolite derived from granite and gneiss and/or schist
Typical profile
Ap - 0 to 6 inches: gravelly sandy clay loam
Bt - 6 to 40 inches: clay
BC - 40 to 55 inches: clay loam
C - 55 to 80 inches: sandy loam
Properties and qualities
Slope: 8 to 15 percent
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Custom Soil Resource Report
Depth to restrictive feature: More than 80 inches
Natural 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 storage in profile: Moderate (about 8.2 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 3e
Hydrologic Soil Group: B
Hydric soil rating: No
ChA—Chewacla silt loam, 0 to 2 percent slopes, frequently flooded
Map Unit Setting
National map unit symbol: 3wOp
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: Prime farmland if drained and either protected from flooding
or not frequently flooded during the growing season
Map Unit Composition
Chewacla and similar soils: 87 percent
Minor components: 13 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Chewacla
Setting
Landform: Flood plains
Down -slope shape: Concave
Across -slope shape: Linear
Parent material: Loamy alluvium derived from igneous and metamorphic rock
Typical profile
A - 0 to 4 inches: silt loam
Bw1 - 4 to 26 inches: silty clay loam
Bw2 - 26 to 38 inches: loam
Bw3 - 38 to 60 inches: clay loam
C - 60 to 80 inches: loam
Properties and qualities
Slope: 0 to 2 percent
Depth to restrictive feature: More than 80 inches
Natural drainage class: Somewhat poorly drained
Runoff class: Low
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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: About 6 to 24 inches
Frequency of flooding: Frequent
Frequency of ponding: None
Available water storage in profile: High (about 11.5 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 4w
Hydrologic Soil Group: B/D
Hydric soil rating: No
Minor Components
Congaree
Percent of map unit: 8 percent
Landform: Flood plains
Down -slope shape: Linear
Across -slope shape: Linear
Hydric soil rating: No
Wehadkee, undrained
Percent of map unit: 5 percent
Landform: Depressions on flood plains
Down -slope shape: Concave
Across -slope shape: Linear
Hydric soil rating: Yes
CmB—Cid channery silt loam, 1 to 5 percent slopes
Map Unit Setting
National map unit symbol: 3wOq
Elevation: 200 to 650 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
Cid and similar soils: 85 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Cid
Setting
Landform: I nterfluves
Landform position (two-dimensional): Summit
Landform position (three-dimensional): Interfluve
Down -slope shape: Convex
Across -slope shape: Linear
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Custom Soil Resource Report
Parent material: Residuum weathered from metavolcanics and/or residuum
weathered from argillite
Typical profile
Ap - 0 to 9 inches: channery silt loam
Bt - 9 to 22 inches: silty clay loam
BC - 22 to 27 inches: channery silty clay
Cr- 27 to 32 inches: weathered bedrock
R - 32 to 80 inches: unweathered bedrock
Properties and qualities
Slope: 2 to 6 percent
Depth to restrictive feature: 20 to 40 inches to paralithic bedrock; 20 to 40 inches
to lithic bedrock
Natural drainage class: Moderately well drained
Runoff class: Low
Capacity of the most limiting layer to transmit water (Ksat):
high (0.00 to 0.20 in/hr)
Depth to water table: About 12 to 30 inches
Frequency of flooding: None
Frequency of ponding: None
Available water storage in profile: Low (about 4.0 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 2e
Hydrologic Soil Group: D
Hydric soil rating: No
Very low to moderately
GfB2—Georgeville silty clay loam, 2 to 8 percent slopes, moderately
eroded
Map Unit Setting
National map unit symbol: 2mx7q
Elevation: 270 to 950 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, moderately eroded, and similar soils: 90 percent
Minor components: 4 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Georgeville, Moderately Eroded
Setting
Landform: I nterfluves
Landform position (two-dimensional): Summit
Landform position (three-dimensional): Interfluve
Down -slope shape: Convex
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Custom Soil Resource Report
Across -slope shape: Convex
Parent material: Residuum weathered from metavolcanics and/or argillite
Typical profile
Ap - 0 to 7 inches: silty clay loam
Bt - 7 to 60 inches: clay
C - 60 to 80 inches: silty clay loam
Properties and qualities
Slope: 2 to 8 percent
Depth to restrictive feature: More than 80 inches
Natural 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 storage in profile: High (about 9.6 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 2e
Hydrologic Soil Group: B
Hydric soil rating: No
Minor Components
Tarrus, moderately eroded
Percent of map unit: 4 percent
Landform: Interfluves
Landform position (two-dimensional): Summit
Landform position (three-dimensional): Interfluve
Down -slope shape: Convex
Across -slope shape: Convex
Hydric soil rating: No
HeB—Helena fine sandy loam, 2 to 8 percent slopes
Map Unit Setting
National map unit symbol: 3wl4
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
Helena and similar soils: 85 percent
Minor components: 4 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
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Custom Soil Resource Report
Description of Helena
Setting
Landform: Ridges
Landform position (two-dimensional): Summit, footslope
Down -slope shape: Concave
Across -slope shape: Concave
Parent material: Saprolite derived from granite and gneiss and/or schist
Typical profile
Ap - 0 to 8 inches: fine sandy loam
Bt - 8 to 45 inches: clay
BC - 45 to 80 inches: sandy loam
Properties and qualities
Slope: 2 to 8 percent
Depth to restrictive feature: More than 80 inches
Natural drainage class: Moderately well drained
Runoff class: Medium
Capacity of the most limiting layer to transmit water (Ksat): Moderately low to
moderately high (0.06 to 0.20 in/hr)
Depth to water table: About 18 to 30 inches
Frequency of flooding: None
Frequency of ponding: None
Available water storage in profile: Moderate (about 7.8 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 2e
Hydrologic Soil Group: D
Hydric soil rating: No
Minor Components
Worsham, undrained
Percent of map unit: 2 percent
Landform: Depressions
Landform position (two-dimensional): Footslope
Down -slope shape: Concave
Across -slope shape: Concave
Hydric soil rating: Yes
Wehadkee, undrained
Percent of map unit: 2 percent
Landform: Depressions on flood plains
Down -slope shape: Concave
Across -slope shape: Linear
Hydric soil rating: Yes
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Custom Soil Resource Report
IrA—Iredell loam, 0 to 3 percent slopes
Map Unit Setting
National map unit symbol: 3wl5
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
Iredell and similar soils: 80 percent
Minor components: 5 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Iredell
Setting
Landform: I nterfluves
Landform position (two-dimensional): Summit
Landform position (three-dimensional): Interfluve
Down -slope shape: Linear
Across -slope shape: Linear
Parent material: Saprolite derived from diorite and/or gabbro and/or diabase
and/or gneiss
Typical profile
Ap - 0 to 6 inches: loam
Btss - 6 to 25 inches: clay
BC - 25 to 28 inches: clay loam
C - 28 to 72 inches: sandy loam
Cr - 72 to 80 inches: weathered bedrock
Properties and qualities
Slope: 0 to 2 percent
Depth to restrictive feature: 60 to 80 inches to paralithic bedrock
Natural drainage class: Moderately well drained
Runoff class: Very high
Capacity of the most limiting layer to transmit water (Ksat): Very low to moderately
high (0.00 to 0.20 in/hr)
Depth to water table: About 12 to 24 inches
Frequency of flooding: None
Frequency of ponding: None
Calcium carbonate, maximum in profile: 2 percent
Available water storage in profile: High (about 10.8 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 2w
Hydrologic Soil Group: C/D
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Custom Soil Resource Report
Hydric soil rating: No
Minor Components
Armenia, undrained
Percent of map unit: 5 percent
Landform: Drainageways on interfluves
Landform position (two-dimensional): Summit
Landform position (three-dimensional): Interfluve
Down -slope shape: Linear
Across -slope shape: Linear
Hydric soil rating: Yes
TaB—Tarrus gravelly silt loam, 2 to 8 percent slopes
Map Unit Setting
National map unit symbol: 2mx8j
Elevation: 200 to 650 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
Tarrus and similar soils: 85 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Tarrus
Setting
Landform: I nterfluves
Landform position (two-dimensional): Summit
Landform position (three-dimensional): Interfluve
Down -slope shape: Convex
Across -slope shape: Convex
Parent material: Residuum weathered from metavolcanics and/or argillite
Typical profile
Ap - 0 to 5 inches: gravelly silt loam
Bt - 5 to 32 inches: clay
BC - 32 to 40 inches: silty clay loam
C - 40 to 54 inches: silt loam
Cr - 54 to 80 inches: weathered bedrock
Properties and qualities
Slope: 2 to 8 percent
Depth to restrictive feature: 40 to 60 inches to paralithic bedrock
Natural 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)
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Custom Soil Resource Report
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Available water storage in profile: Moderate (about 6.8 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 2e
Hydrologic Soil Group: B
Hydric soil rating: No
TaC—Tarrus gravelly silt loam, 8 to 15 percent slopes
Map Unit Setting
National map unit symbol: 2mx8k
Elevation: 200 to 650 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
Tarrus and similar soils: 85 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Tarrus
Setting
Landform: I nterfluves
Landform position (two-dimensional): Summit
Landform position (three-dimensional): Interfluve
Down -slope shape: Convex
Across -slope shape: Convex
Parent material: Residuum weathered from metavolcanics and/or argillite
Typical profile
Ap - 0 to 5 inches: gravelly silt loam
Bt - 5 to 32 inches: clay
BC - 32 to 40 inches: silty clay loam
C - 40 to 54 inches: silt loam
Cr - 54 to 80 inches: weathered bedrock
Properties and qualities
Slope: 8 to 15 percent
Depth to restrictive feature: 40 to 60 inches to paralithic bedrock
Natural 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
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Custom Soil Resource Report
Available water storage in profile: Moderate (about 6.8 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 3e
Hydrologic Soil Group: B
Hydric soil rating: No
TbB2—Tarrus gravelly silty clay loam, 2 to 8 percent slopes, moderately
eroded
Map Unit Setting
National map unit symbol: 2mx8q
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
Tarrus, moderately eroded, and similar soils: 85 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Tarrus, Moderately Eroded
Setting
Landform: I nterfluves
Landform position (two-dimensional): Summit
Landform position (three-dimensional): Interfluve
Down -slope shape: Convex
Across -slope shape: Convex
Parent material: Residuum weathered from schist and/or other metamorphic rock
Typical profile
Ap - 0 to 6 inches: gravelly silty clay loam
Bt - 6 to 45 inches: silty clay
Cr - 45 to 80 inches: weathered bedrock
Properties and qualities
Slope: 2 to 8 percent
Depth to restrictive feature: 40 to 60 inches to paralithic bedrock
Natural 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 storage in profile: Low (about 4.5 inches)
Interpretive groups
Land capability classification (irrigated): None specified
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Custom Soil Resource Report
Land capability classification (nonirrigated): 2e
Hydrologic Soil Group: B
Hydric soil rating: No
W—Water
Map Unit Composition
Water: 100 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Water
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 8w
Hydric soil rating: No
WyB—Wynott gravelly loam, 2 to 8 percent slopes
Map Unit Setting
National map unit symbol: 2mdlm
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
Wynott and similar soils: 85 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Wynott
Setting
Landform: I nterfluves
Landform position (two-dimensional): Summit
Landform position (three-dimensional): Interfluve
Down -slope shape: Convex
Across -slope shape: Convex
Parent material: Saprolite derived from diorite and/or gabbro and/or diabase
and/or gneiss
Typical profile
Ap - 0 to 8 inches: gravelly loam
Bt - 8 to 23 inches: clay
BC - 23 to 30 inches: gravelly clay
Cr - 30 to 80 inches: weathered bedrock
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Custom Soil Resource Report
Properties and qualities
Slope: 2 to 8 percent
Depth to restrictive feature: 20 to 40 inches to paralithic bedrock; 40 to 80 inches
to lithic bedrock
Natural drainage class: Well drained
Runoff class: Medium
Capacity of the most limiting layer to transmit water (Ksat): Very low to moderately
high (0.00 to 0.20 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Available water storage in profile: Low (about 4.4 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 2e
Hydrologic Soil Group: D
Hydric soil rating: No
27

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/
nres/detail/national/soils/?cid=nres 142p2_054262
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/rangepasture/?cid=stelprdb1043084
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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/
nres/detail/soils/scientists/?cid=nres142p2_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=nres142p2_053624
United States Department of Agriculture, Soil Conservation Service. 1961. Land
capability classification. U.S. Department of Agriculture Handbook 210. http://
www.nrcs.usda.gov/lnternet/FSE—DOCUMENTS/nrcsl 42p2_052290.pdf
29

National Flood Hazard Layer FIRMette
Legend
�= FEMA 9
34°59'32.53"N
i - I .U,000
0 250 500 1,000 1,500 2,000
SEE FIS REPORT FOR DETAILED LEGEND AND INDEX MAP FOR FIRM PANEL LAYOUT
Without Base Flood Elevation (BFE)
Zone A. V. A99
SPECIAL FLOOD With BFE or Depth Zone AE, AO, AH, VE, AR
HAZARD AREAS Regulatory Floodway
0.2% Annual Chance Flood Hazard, Areas
of 1% annual chance flood with average
depth less than one foot or with drainage
areas of less than one square mile zone x
Future Conditions 1% Annual
Chance Flood Hazard zone x
�" Area with Reduced Flood Risk due to
ITHER AREAS OF Levee. See Notes. Zone x
FLOOD HAZARD F'I Area with Flood Risk due to Leveezone D
NO SCREEN Area of Minimal Flood Hazard zone x
Q Effective LOMRs
OTHER AREAS Area of Undetermined Flood Hazard zone o
GENERAL — — —' Channel, Culvert, or Storm Sewer
STRUCTURES i i i i i i i Levee, Dike, or Floodwall
Cross Sections with 1% Annual Chance
17•5 Water Surface Elevation
eo- — — Coastal Transect
---513----- Base Flood Elevation Line (BFE)
Limit of Study
Jurisdiction Boundary
-- --- Coastal Transect Baseline
OTHER _ Profile Baseline
FEATURES Hydrographic Feature
Digital Data Available N
No Digital Data Available + _
MAP PANELS Unmapped V'
The pin displayed on the map is an approximate
point selected by the user and does not represent
an authoritative property location.
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 basemap
accuracy standards
The flood hazard information is derived directly from the
authoritative NFHL web services provided by FEMA. This map
was exported on 4/11/2019 at 12:31:43 PM and does not
reflect changes or amendments subsequent to this date and
time. The NFHL and effective information may change or
become 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.

National Flood Hazard Layer FIRMette
34°59'37.55"N
i cci I .U,000
0 250 500 1,000 1,500 2,000
�
Le = FEMA _end 9
SEE FIS REPORT FOR DETAILED LEGEND AND INDEX MAP FOR FIRM PANEL LAYOUT
Without Base Flood Elevation (BFE)
Zone A. V. A99
SPECIAL FLOOD With BFE or Depth Zone AE, AO, AH, VE, AR
HAZARD AREAS Regulatory Floodway
0.2% Annual Chance Flood Hazard, Areas
of 1% annual chance flood with average
depth less than one foot or with drainage
areas of less than one square mile zone x
Future Conditions 1% Annual
Chance Flood Hazard zone x
�" Area with Reduced Flood Risk due to
ITHER AREAS OF Levee. See Notes. zone x
FLOOD HAZARD F lI Area with Flood Risk due to Levee zone D
NO SCREEN Area of Minimal Flood Hazard zone x
Q Effective LOMRs
OTHER AREAS Area of Undetermined Flood Hazard zone o
GENERAL — — —' Channel, Culvert, or Storm Sewer
STRUCTURES i i i i i i i Levee, Dike, or Floodwall
Cross Sections with 1% Annual Chance
17•5 Water Surface Elevation
eo- — — Coastal Transect
— 513----- Base Flood Elevation Line (BFE)
Limit of Study
Jurisdiction Boundary
-- --- Coastal Transect Baseline
OTHER _ Profile Baseline
FEATURES Hydrographic Feature
Digital Data Available N
No Digital Data Available + _
MAP PANELS Unmapped V'
The pin displayed on the map is an approximate
point selected by the user and does not represent
an authoritative property location.
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 basemap
accuracy standards
The flood hazard information is derived directly from the
authoritative NFHL web services provided by FEMA. This map
was exported on 4/11/2019 at 12:36:27 PM and does not
reflect changes or amendments subsequent to this date and
time. The NFHL and effective information may change or
become 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.

U.S. Fish and Wildlife Service
/ f
• r: � � �' q • fit: �
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808r.A;: "fir•. �� •!�

APPENDIX C
NCDOT Rainfall Intensity

12/11/2018 Precipitation Frequency Data Server
NOAA Atlas 14, Volume 2, Version 3
' Location name: Waxhaw, North Carolina, USA* '
Latitude: 34.9888°, Longitude:-80.77360
Elevation: 650.88 ft**
source: ESRI Maps m y�
** source: USGS
POINT PRECIPITATION FREQUENCY ESTIMATES
G.M. Bonnin, D. Martin, B. Lin, I 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/hour)1
Average recurrence interval (years)
Duration F�����
1 2 5 10 25 50 100 200 500 1000
5.00 5.90 6.85 7.56 8.35 8.90 9.41 9.86 10.4 10.8
5-min
(4.61-5.44) fl (5.44-6.43) 1 (6.30-7.46) 1 (6.92-8.20) 11 (7.62-9.05) 1 (8.09-9.65) 1 (8.51-10.2) 1 (8.87-10.7) 1 (9.25-11.3) 1 (9.50-11.7)
10-min 4.00 4.72 5.49 6.04 6.65 7.09 7.48 7.82 8.21 8.47
(3.68-4.34) (4.34-5.14) 1 (5.04-5.98) 1 (5.54-6.56) 1 (6.07-7.21) 1 (6.44-7.69) 1 (6.76-8.10) (7.03-8.48) 1 (7.32-8.92) 11 (7.49-9.21)
3.33 3.96 4.63 5.10 5.62 5.98 6.30 6.58 6.89 7.08
15-min
(3.07-3.62) (3.64-4.31) 1 (4.25-5.04) 1 (4.67-5.53) 1 (5.13-6.10) (5.44-6.48) 1 (5.70-6.82) (5.91-7.13) 1 (6.14-7.48) (6.26-7.71)
2.28 2.73 3.29 3.69 4.17 F 4.82 5.12 5.48 5.73
30-min
(2.10-2.48) 11 (2.52-2.98) 1 (3.02-3.58) 1 (3.38-4.01) 1 (3.80-4.51) (4.09-4.88) (4.36-5.23) 1 (4.60-5.55) 1 (4.89-5.96) 1 (5.07-6.24)
60-min 1.42 1.72 2.11 2.40 2.77 3.05 3.32 3.59 3.93 4.19
(1.31-1.55) 1 (1.58-1.87) 1 (1.94-2.30) 1 (2.20-2.61) 1 (2.53-3.01) 1 (2.77-3.31) (3.00-3.60) (3.23-3.89) (3.51-4.27) 11 (3.70-4.56)
0.824 0.996 1.23 1.42 1.65 1.83 2.01 2.19 2.43 2.61
2-hr
(0.754-0.901) (0.912-1.09) 1 (1.13-1.35) 1 (1.29-1.55) 1 (1.50-1.80) 1 (1.66-2.00) (1.81-2.19) (1.96-2.39) (2.15-2.65) (2.29-2.85)
0.583 0.703 0.876 1.01 1.19 1.34 1.49 F 1.64 F 1.85 2.01
3-hr
(0.533-0.641) ( 0.643-0.774) ( 0.800-0.963) (0.920-1.11) 1 (1.08-1.31) (1.21-1.46) (1.33-1.62) 1 (1.45-1.79) 1 (1.62-2.02) 1 (1.74-2.20)
0.351 0.423 0.528 0.611 0.724 0.814 0.907 1.00 1.14 1.24
6-hr
(0.322-0.386) (0.388-0.465) (0.483-0.579) ( 0.558-0.669) ( 0.656-0.789) (0.734-0.887) (0.811-0.987) (0.889-1.09) (0.993-1.24) ( 1.07-1.35)
0.206 0.249 0.312 0.363 0.433 0.490 0.550 F 0.612 F 0.700 0.772
12-hr
(0.190-0.226) (0.229-0.274) (0.286-0.342) (0.331-0.397) (0.392-0.473) (0.441-0.534) (0.489-0.598) (0.539-0.665) (0.607-0.761) (0.660-0.839)
0122 0.148 0.185 0.215 0.257 0.290 0.325 F 0.361 F 0.412 0.452
24-hr
(0.113-0.132) (0.137-0.160) (0.171-0.201) (0.199-0.233) (0.236-0.278) (0.266-0.314) (0.297-0.352) (0.328-0.391) (0.372-0.446) (0.407-0.491)
2-day 0.072 0.087 0.108 0.125 0.149 0.168 F 0.187 F 0.207 0.236 0.258
F(0-
(0.067-0.078) (0.080-0.094) (0.100-0.117) (0.116-0.136) (0.137-0.161) (154-0.182 0.171-0.203) (0.189-0.225) ( 0.213-0.257) (0.232-0.282)
0.051 0.061 0.076 0.088 0.104 1 F-0.117 0.130 0.144 0.164 F 0.179
3-day
(0.047-0.055) (0.057-0.066) (0.070-0.082) (0.081-0.095) (0.096-0.112) (0.107-0.126) (0.119-0.141) (0.132-0.156) (0.148-0.178) (0.162-0.195)
0.040 0.048 0.060 0.069 0.081 0.091 0.102 0.113 0.128 0.140
4-day
(0.038-0.044) ( 0.045-0.052) ( 0.056-0.065) ( 0.064-0.074) ( 0.075-0.088) (0.084-0.099) (0.093-0.110) (0.103-0.122) ( 0.116-0.139) (0.127-0.152)
0.027 0.032 0.039 0.044 0.052 0.058 0.065 0.071 0.081 0.088
7-day
(0.025-0.029) (0.030-0.034) (0.036-0.042) (0.041-0.048) (0.048-0.056) (0.054-0.063) (0.060-0.069) (0.066-0.077) (0.074-0.087) ( 0.080-0.095)
F 0.025 0.031 0.035 0.040 0.045 0.049 0.054 0.060 0.065
F0.021
10-day
(0.020-0.023) (0.024-0.027) (0.029-0.033) (0.032-0.037) (0.038-0.043) (0.041-0.048) (0.046-0.053) (0.050-0.058) (0.055-0.064) (0.059-0.070)
0.014 0.017 0.020 0.022 0.026 0.028 0.031 0.033 0.037 0.040
20-day
(0.013-0.015) (0.016-0.018) (0.019-0.021) (0.021-0.024) (0.024-0.027) (0.026-0.030) (0.029-0.033) (0.031-0.036) (0.034-0.040) (0.037-0.043)
0.012 0.014 0.016 0.018 0.020 0.022 0.024 0.025 0.028 0.029
30-day
(0.011-0.012) (0.013-0.015) (0.015-0.017) (0.017-0.019) (0.019-0.021) (0.020-0.023) (0.022-0.025) (0.024-0.027) (0.026-0.030) (0.027-0.032)
0.010 0.011 0.013 0.014 0.016 0.017 0.019 0.020 0.021 0.023
45-day
(0.009-0.010) (0.011-0.012) (0.012-0.014) (0.014-0.015) (0.015-0.017) (0.016-0.018) (0.018-0.020) (0.019-0.021) (0.020-0.023) (0.021-0.024)
6�-dy60.009 0.010 0.012 0.013 0.014 0.015 0.016 0.017 0.018 0.019
(0.008-0.009) (0.010-0.011) (0.011-0.012) (0.012-0.013) (0.013-0.015) (0.014-0.016) (0.015-0.017) (0.016-0.018) (0.017-0.019) (0.018-0.020)
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:Hhdsc.nws.noaa.gov/hdsc/pfds/pfds_printpage.html?lat=34.9888&Ion=-80.7736&data=intensity&units=english&series=pds 1/4

12/11 /2018
Precipitation Frequency Data Server
100.000
PDS-based intensity -duration -frequency (IDF) curves
Latitude: 34.98931, Longitude:-00.7735D
... . .._ _ _ .. _ .._ .
0.001
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1 2 5 10 25 50 100 200 500 1000
Average recurrence interval (years)
NDAAAtlas 14, Volume 2, Version 3 Created {GMT}: Tue Dec 11 22-11.32 2018
Back to Top
Maps & aerials
Small scale terrain
Average recurrence
interval
(years)
— 1
2
— 1Q
25
50
100
200
500
1000
Duration
— "in —
2-day
— 1D-min —
3-day
I5-min —
4-day
— 30-min —
7-day
— 60-min —
10-eay
— 2-nr —
20-day
— 3-hr —
30-day
— 6-hr —
45-day
— 12-hr —
6o-day
— 24-hr
https:Hhdsc.nws.noaa.gov/hdsc/pfds/pfds_printpage.html?lat=34.9888&Ion=-80.7736&data=intensity&units=english&series=pds 2/4

12/11 /2018
Precipitation Frequency Data Server
Large scale terrain
msonCi Winston-Salem
-4 • . DUI'h am
Greensboro •
c r.il r.us• null Ri
# •Asherille NORTH C A R 0 L I N A
'Charlotte Fayetteville+
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Large scale map
100km
60mi
Large scale aerial
https:Hhdsc.nws.noaa.gov/hdsc/pfds/pfds_printpage.html?lat=34.9888&Ion=-80.7736&data=intensity&units=english&series=pds 3/4

12111 /2018
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:Hhdsc.nws.noaa.gov/hdsc/pfds/pfds_printpage.html?lat=34.9888&Ion=-80.7736&data=intensity&units=english&series=pds 4/4

APPENDIX D
Existing Drainage Map

16
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af AREA-0.752 AC -
'1002 (EX) C- 0.330 1 "1 rr
AREA OB34 AC 1003 (EX) TC- 21.57 MISS 7
g , C- 0.357 AREA: 0J95 AC 0- 2.56 CFS:
• - TC-15.09 M/NS
r
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i : r .4'•.4 Qr a506 CFS 1102 (EX)
:r *
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12ai (EX)
r AREA: ad2/5 AC �
w: } �- - - CB-060/ (EX) llal fEXJ C. 0�400 tl
_ r " TC- 2126 M/NS Cr 0.483 •-r , .
. ' AREA 0W6/7 AC AREA 203 AC
TC. la M/NS
C- 0r584 �. � EP—�002 C- Ow383 0- 921,a9 CFS Q- 0.64 CFS
i TC- /0 M/NS %�: - EP-0605 TC- /0 M/NS EP-1203
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PHONE [phone] ©2018
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EXISTING DRAINAGE
DATE: 04-15-2019
0 150' 300' 450'
GRAPHIC SCALE
THIS DOCUMENT, TOGETHER WITH THE CONCEPTS AND DESIGNS PRESENTED HEREIN, AS AN INSTRUMENT OF SERVICE, IS INTENDED ONLY FOR THE SPECIFIC PURPOSE AND CLIENT FOR WHICH IT WAS PREPARED. REUSE OF AND IMPROPER RELIANCE ON THIS DOCUMENT WITHOUT WRITTEN AUTHORIZATION AND ADAPTATION BY KIMLEY—HORN AND ASSOCIATES, INC. SHALL BE WITHOUT LIABILITY TO KIMLEY—HORN AND ASSOCIATES, INC.

APPENDIX E
Existing Drainage Modeling (Link, Node, and Spread analysis)

Kimley>>)Horn
Project Information
Project Name: Marvin Gardens
KHA Project #: 017437002
Designed by: ALM
Checked by:
Revised by:
Link Analysis
Existing Conditions
Date: 4/15/2019 PROVIDENCE ROAD & NEW
Date:
Date: TOWN ROAD INTERSECTION
Link - ID
Link - Library Item
Unk- Upstream
Node
Link -
Downstream
Node
Link - Material
Link -Actual
Length
Link - Slope
Link - Discharge
Link - Capacity
Link - Invert
Upstream
Link - Invert
Downstream
Link -Actual
Velocity
Downstream
EX 0404
15in RC Pipe
EX 0403
EX 0401
Concrete
105.29
3.63
3.37
13.33
662.43
658.61
9.03
EX 0601
18in RC Pipe
EX 0601
EX 0602
Concrete
77.30
2.32
9.51
17.32
654.23
652.37
9.72
EX 0602
18in RC Pipe
EX 0602
EX 0603
Concrete
92.16
3.64
11.10
21.72
652.12
648.69
11.95
EX 0603
24in RC Pipe
EX 0603
EX 0608
Concrete
136.66
4.55
12.71
52.29
648.47
642.18
13.51
EX 0605
24in RC Pipe
EX 0605
EX 0605-0UT
Concrete
64.63
9.37
1.46
75.02
636.76
630.61
9.38
EX 0606
18in RC Pipe
EX 0606
EX 0607
Concrete
97.10
1.59
3.00
14.33
645.60
644.06
6.39
EX 0609
18in RC Pipe
EX 0609
EX 0601
Concrete
11.83
3.30
7.28
20.69
655.82
655.33
8.33
EX 0701
30in RC Pipe
EX 0701
EX 0701-OUT
Concrete
69.02
0.81
13.64
40.03
632.10
631.54
7.20
EX 0901
18in RC Pipe
EX 0901
EX 0902
Concrete
72.28
4.48
2.88
24.10
667.48
664.23
9.08
EX 0903
18in RC Pipe
EX 0903
EX 0903-OUT
Concrete
53.01
1.23
1.09
12.63
660.85
660.20
4.35
EX 1001
12in RC Pipe
EX 1001
EX 1001-OUT
Concrete
51.33
2.59
3.00
6.21
646.65
645.32
7.67
EX 1002
12in RC Pipe
EX 1002
EX 1002-OUT
Concrete
22.04
3.04
3.00
6.73
640.05
639.38
7.50
EX 1003
24in RC Pipe
EX 1003
EX 1003-OUT
Concrete
40.68
6.83
0.51
64.07
633.89
631.11
6.06
EX 1101
18in RC Pipe
EX 1101
EX 1101-OUT
Concrete
39.14
8.18
4.00
32.54
624.73
621.53
11.72
EX 1102
48in RC Pipe
EX 1102
EX 1103
Concrete
37.92
2.48
92.09
245.01
605.40
604.46
13.28
EX 1201
12in RC Pipe
EX 1201
EX 1201-0UT
Concrete
40.02
5.72
0.64
9.23
628.85
626.56
6.73
EX 1202
18in RC Pipe
EX 1202
EX 1202-0UT
Concrete
104.22
4.48
3.89
24.09
620.13
615.46
9.97
EX 1203
15in RC Pipe
EX 1203
EX 1203-OUT
Concrete
35.89
2.65
1 1.14
11.39
619.59
618.64
5.83
Notes:
GEOPAK Link output
GEOPAK inputs from NCDOT Instruction Manual for GEOPAK Drainage

Node Analysis
Kim ey)))Horn Existing Conditions
Project Information
Project Name: Martin Gardens
KHA Project #: 017437002
Designed by: ALM Date: 4/1512019 PROVIDENCE ROAD & NEW TOWN
Checked by: Date:
Revised by: Date: ROAD INTERSECTION
Node - ID
Node - Library Item
Name
Area- Composite C
value
Area -Composite
Area
Node - Tc Used
Node -Station
Node -Elevation
Node -Depth
Node - Junction
Loss
EX 0401
Outlet Node (Misc)
n/a
n/a
0.00
12+40.61
658.61
0.00
0.52
EX 0403
Pipe Stub out
0.41
1.32
10.00
13+46.73
662.43
0.00
0.31
EX 0601
Existing CB
0.58
0.62
10.02
19+71.07
657.68
3.45
0.51
EX 0602
Existing CB
0.68
0.39
10.16
20+48.63
655.27
3.15
0.56
EX 0603
EXIST DI
0.49
0.55
10.28
20+81.80
651.79
3.32
0.30
EX 0605
EXIST DI
0.51
0.49
12.00
24+80.39
640.51
3.75
0.15
EX 0606
Pipe Stub Out
0.38
3.52
0.00
22+36.85
645.60
0.00
0.25
EX 0607
Outlet Node (Misc)
n/a
n/a
0.00
22+32.26
644.06
0.00
0.52
EX 0608
Outlet Node (Misc)
n/a
n/a
0.00
22+62.68
642.18
0.00
0.52
EX 0609
Existing CB
0.87
1.35
10.00
19+70.63
659.41
3.59
0.48
EX 0701
Pipe Stub Out
0.36
8.71
23.84
26+62.54
632.10
0.00
0.49
EX 0901
Pipe Stub Out
0.40
1.17
10.00
16+81.67
667.48
0.00
0.24
EX 0902
Outlet Node (Misc)
n/a
n/a
0.00
17+54.59
664.23
0.00
0.52
EX 0903
Pipe Stub Out
0.66
0.27
10.00
17+99.76
660.85
0.00
0.14
EX 1001
Pipe Stub Out
0.32
1.66
0.00
25+60.08
646.65
0.00
0.36
EX 1002
Pipe Stub Out
0.36
0.83
0.00
27+44.34
640.05
0.00
0.36
EX 1003
Pipe Stub Out
0.42
0.20
10.00
28+55.28
636.09
2.20
0.08
EX 1101
Pipe Stub Out
0.38
2.14
18.43
30+07.03
624.73
0.00
0.30
EX 1102
Pipe Stub Out
0.40
49.88
21.26
33+74.42
605.40
0.00
1.37
EX 1103
Outlet Node (Misc)
n/a
n/a
0.00
33+76.49
604.74
0.00
0.54
EX 1201
Pipe Stub Out
0.48
0.22
10.00
40+18.78
628.85
0.00
0.12
EX 1202
Pipe Flared End
0.40
1.91
16.24
38+22.83
620.13
0.00
0.30
EX 1203
Pipe Stub Out
0.33
0.75
21.57
37+56.36
619.59
0.00
0.15
EX 0605-OUT
Outlet Node (Misc)
n/a
n/a
0.00
24+85.16
630.61
0.00
0.48
EX 0701-OUT
Outlet Node (Misc)
n/a
n/a
0.00
26+53.78
631.54
0.00
0.08
EX 0903-OUT
Outlet Node (Misc)
n/a
n/a
0.00
18+01.56
660.20
0.00
0.15
EX 1001-OUT
Outlet Node (Misc)
n/a
n/a
0.00
26+11.39
645.32
0.00
0.05
EX 1002-OUT
Outlet Node (Misc)
n/a
n/a
0.00
27+66.37
639.38
0.00
0.05
EX 1003-OUT
Outlet Node (Misc)
n/a
n/a
0.00
28+95.96
631.11
0.00
0.03
EX 1101-OUT
Outlet Node (Misc)
n/a
n/a
0.00
30+46.17
621.53
0.00
0.03
EX 1201-OUT
Outlet Node (Misc)
n/a
n/a
0.00
39+78.76
626.56
0.00
0.02
EX 1202-OUT
Outlet Node (Misc)
n/a
n/a
0.00
37+18.63
615.46
0.00
0.05
EX 1203-OUT
Outlet Node (Misc)
n/a
n/a
0.00
37+20.50
618.64
0.00
0.03
Notes:
GEOPAK Node output
GEOPAK inputs from NCDOT Instruction Manual for GEOPAK Drainage

APPENDIX F
Proposed Drainage Map

A I , , i
I
.- .,; .
NO
A ., .
CB-0907 TC- /0 M/NS
AREA- OD54 AC 0-1.65 CFS
C- OB64
TC-10 M/NS
0- 029 CFS f
CB -0%-5
AREA- OD45AC
Cr OB94
TC- /0 M/NS
0- 025 CFS CB -0902 AREA OD55 AC
C- 0.872
TC- /0 M/NS
0- 0.30 CFS
.
CB -0901
AREA; O„081 AC
C- 0.868
TC- /0 M/NS
0- 0.44 CFS 090/ (EX)
AREA IJ65 AC
� c- 0.398
TC- /0 M/NS
0- 2B8 CFS
CB -0%4 CB -0%5
AREA: 0,049AC AREA- OJ04 AC
C- OB98 C- OB84
TCr /0 M/NS TC- /0 M/NS
Q- 028 CFS 0- 0.57 CFS
0903 (EX) -GCB-060i (EX)
AREA: 0„047AC AREA0J32 AC
C- 0.300 C- 0.769
TC- /0 M/NS TC- /0 M/NS
0- 0.09 CFS 0- 0W63 CFS
CB-0612
AREA 0218 AC
C- 0.880
TC- /0 M/NS
0-1J9 CFS
CB -0611
AREA- 0.037 AC
C. OB62
TC-10 M/NS
\ 0- 020 CFS
Km.
N�
NP-0902
NEW TOWN RD
NP-0901
EP-0901-
/CB -0609 (EX) -�
AREA- /w353 AC EP-0601
C.-a.8s8 EP-0602
TC- /0 M/NS
0- 7.28 CFS
CB-0602 (EX)
AREA- 0.393 AC
C- 0.676
TC- /0 M/NS
0-1.65 CFS
CB-0703 -
AREA- 0.095 AC
0704 C.-0.790
AREA- T C- l0 M/NS
8r567AC
a
C.- a�363 - 0.47 CFS
TC- 23B40 M/NS NP-0704 -
0-13.65 CFS
NP-06/4
CB -0614
AREA- 02/5 AC
C- OB53
TC- /0 M/NS
0-1J4 CFS
EP-0605 2
CB -06/3
AREA; 0280 AC
C- OB76
TC- /0 MISS
a-1.52 CFS
CB -0605 (EX) _
AREA 0274 AC
C- 0.300
TC-12 M/NS
\ 0- 0.48 CFS
1
CB -0501 IV
AREA- OJ51 AC F
C- OB71 ,
TC- lO M/NS
0- OW8/ CFS - •
CB -0404
AREA- 0224 AC NP-0405
C- OB67 - Lu
v
TC- 10 M/NS z EP_0404
0-120 CFS o CB -0601
o AREA- 0J/4 AC
C- 0.866
a TC- /0 M/NS
0- 0.61 CFS
CB-0402 NP-0402 r
AREA 0260 AC
C- OB79
TC- /0 M/NS
0-1.42 CFS -
NP-0703 ° i�
CB-0702
AREA 0.069 AC 4- A.
C- 0.851 - yy
TC. /0 M/NS 1105
0- 0.37 CFS AREA- 48.698 ACN.
-
o C.-0. 394
4 NP-0702 TC- 2126 MiNS -�
v40 0- 88.48 CFS
44:/� CB -0609
p AREA 0.061 AC
o C- OB86
TCr 10 MiNS o
Q
/ NP-1005
NP-1003 -
I- NP-o690
CB -06%
AREA0.480
C- 0.599
TC- /0 M/NS
0-1.78 CFS
fir: �
NP-0606
-
CB -0605 i
AREA 0.313 AC
C- 0.461
TC.-10 M/NS
0- OB9 CFS
NP-m3 -
CB-0603
AREA 0J85 AC
C. 0.775
TC- /0 M/NS
0- OB9 CFS
0- 0.34 CFS {{
CB-0607 s
AREA- OD64 AC y S�
C- OB79
I�
TC.lO M/NS r ,..�
Q- a.35 CFS o �' ',
NP-Or"
CB -1005 ��`Al
CB-a608 AREA- 0.076
AREA- OD43 AC
C.- OB64 C.-0.858
TC-10 M/NS TC-10 M/NS {
0- 0229 CFS 0- 0.40 CFS
CB-1001 CB-1102
AREA 0.063 AC AREA OJ83 AC �
C- OB55 C- OB55 Av
TC- /0 M/NS TC- /0 M/NS
0- 0.33 CFS 0- 0.97 CFS NP-��05
CB -1104
CB-1003 AREA- OJ24 AC
AREA OJ25 AC C- OB58
C. 0B5/ TC- lO M/NS
TC- /0 M/NS 0- 0.66 CFS
0- OS6 CFS
NP'1()O7
CB -1004
AREA OJ70 AC
C- 0.553
TC- /0 M/NS
0- 0.58 CFS
CB -1002
AREA; 0.134 AC
C- 0.734
TC- /0 M/NS
0- 0.62 CFS
NP-/002
CB -0610
AREA 0.551 AC
C- 0.660
TC. l0 M/NS
0. 225 CFS
NP-1102
NP-110/
CB-1101
AREA- 2.495 AC
C- 0.397
TC-14.43 M/NS
44.
0- 5r75 CF .1,
•
- CB -1007 =
AREA- OJ72 AC
C- 0.498
T C-15ND90 M/NS
0- 0.45 CFS
CB -1006
AREA 0.332 AC
C- 0.490
TC-15J8 M/NS
0- OB4 cFs
F
,4 '• f
Ir
k
ON
,�
pr • 4111.4 '
. 'F
r&
0 '
f
%
NP-1205 V
NP-1206-. - q NEW TOWN RD I
v �'91
1201(EX) .-.
EP-12�, AREA- 0215 AC
CB -1113 C- 0.
AREA 0.045 AC NP-TC-10 M/NS
C- OB18 �y 0- 0.60 CFS
TC- /0 M/NS
1
0- 023 CFS
_
CB _1106 02
AREA- OJ40 AC
C- 0.832 2�
TC-10 M/NS
0- 0.72 cFs
a
- CB-1107
AREA OJ30 AC -
C: OB72
TC: lO M/NS - -
0- 070 C_F
� S y
� J• f rr+:
NP-1107 r .
j
NN
' -Nk �-#
,
r
_ �� f s
- CB -//03
AREA 0232 AC
C. a.482
TC- /0 M/NS
0- 0.69 CFS
' NP-1114 _
- CB -1114
AREA OJ20 AC
Cm OB26 �
TC: /0 M/NS
0- 0.61 CFS NN
CB-1201
AREA OB50 AC
IN Ctl 0.392it
4 Tc.22tl720 M/NS
0-1.49 CFS s
NP-1202
CB -1202
AREA- 0�099 AC
C- 0. 300
TC-10 M/NS
0- OJ8 CF
r- NP-/203
CB-1203
AREA- 0.778 AC
C- 0.455
TC- 21.570 M/NS
0:1,63 CFS �
CB-1206
AREA OD25 AC .
C- OB82 z�
TCr /0 M/NS �t}
0. 00 CFS
CB -1205
AREA; 0.129 AC
C- 0.300
rC- /0 MINS
0- 024 CFS
I
ONEHAVEN D
. 5 R
CB-1204
AREA 1.744 AC
TC- 21260 M/NS
0- 3J5 CFS
if 1
■ NC License #F-0102
421 FAYETTEVILLE S-F, S-FE 600
im e RALEIGH, NC 27601
PHONE [phone] ©2019
PROPOSED DRAINAGE
DATE: 04-15-2019
0 150' 300' 450'
GRAPHIC SCALE
THIS DOCUMENT, TOGETHER WITH THE CONCEPTS AND DESIGNS PRESENTED HEREIN, AS AN INSTRUMENT OF SERVICE, IS INTENDED ONLY FOR THE SPECIFIC PURPOSE AND CLIENT FOR WHICH IT WAS PREPARED. REUSE OF AND IMPROPER RELIANCE ON THIS DOCUMENT WITHOUT WRITTEN AUTHORIZATION AND ADAPTATION BY KIMLEY-HORN AND ASSOCIATES, INC. SHALL BE WITHOUT LIABILITY TO KIMLEY-HORN AND ASSOCIATES, INC.

APPENDIX G
Proposed Drainage Modeling (Link, Node, and Spread analysis)

Kimley>,))Horn
Link Analysis
Proposed Conditions
Project Infornnation
Project Name: Marvin Gardens
KHAProject #: 017437002
Designed by: ALM
Checked by:
Revised by:
Date: 4/15/2019 PROVIDENCE ROAD & NEW TOWN
Date:
Date: ROAD INTERSECTION
Notes:
GEO PAK Link output
G EO PAK inputs from NCDOT I nstructlon Manua l for GEOPAKDrainage

Kimley)))Horn
NodeAnalysis
:�sm
Ir.p dC dki.-
Prywt—
rgeetrvame: Navin Games
.A
--d ALM
o.m 41M9 PROVIDENCE ROAD & NEW
-15etl
TOWN ROAD INTERSECTION

Kimley>>Morn
Project Name: Marvin Gardens
KHA Project #: 017437002
Designed by: ALM Date: 4/12/2019
Checked by: Date:
Revised by: Date:
Revised by: Date:
Spread Analysis
Proposed Conditions
10 YEAR RAINFALL INTENSITY = 4.00 IN/HR (ALLOWABLE SPREAD = 8 FEET, INLETS IN GORE AREAS HAVE LARGER ALLOWABLE SPREAD)
LOCATION
DRAINAGE
RUNOFF
SURFACE"Q"
SLOPE
INLET
BYPASS
STREET
STA
TYPE
AREA
COEFF.
SUB.
TOTAL
LONG.
CROSS
"Q"CAP.
SPREAD
DEPTH
Qb
TO
INLET #
A (acres)
C
Qs (cfs)
Qr (cfs)
SL (Wit)
S. (Wft)
Q_ (cfs)
T (ft)
D (ft)
(cis)
INLET#
0402
-L- Providence Road
11+31.93
ON -GRADE
0.260
0.879
0.913
1.181
0.0335
0.031
0.685
4.302
0.133
0.495
--
0404
-L- Providence Road
13+95.67
ON -GRADE
0.224
0.867
0.776
0.776
0.0277
0.027
0.509
4.181
0.112
0.267
0402
0501
-L- Providence Road
19+05.24
ON -GRADE
0.151
0.871
0.525
0.525
0.0372
0.027
0.356
3.425
0.091
0.169
0601
0601
-L- Providence Road
20+42.93
ON -GRADE
0.114
0.868
0.394
0.563
0.0422
0.022
0.372
3.910
0.084
0.191
0603
0602
-Y1-New Town Road
20+35.60
ON -GRADE
0.196
0.867
0.681
0.742
0.0309
0.045
0.477
2.895
0.131
0.266
0604
-Y1- New Town Road
21+86.46
ON -GRADE
0.185
0.775
0.573
0.764
0.0317
0.026
0.494
4.081
0.108
0.270
0605
0604
-L- Providence Road
21+75.21
ON -GRADE
0.054
0.869
0.188
0.454
0.0426
0.008
0.301
6.598
0.054
0.153
0612
0605
-Y1- New Town Road
22+36.31
SAG
0.313
0.461
0.577
1.265
--
0.035
1.265
3.531
0.122
0.000
--
0606
-Y1- New Town Road
22+67.80
ON -GRADE
0.480
0.414
0.795
1.093
0.0099
0.015
0.675
8.201
0.125
0.418
0605
0607
-Y1- New Town Road
22+33.27
ON -GRADE
0.064
0.879
0.226
0.239
0.0149
0.033
0.194
2.671
0.087
0.045
0609
0608
-Y1- New Town Road
23+16.73
ON -GRADE
0.043
0.864
0.148
0.148
0.0023
0.037
0.135
2.930
0.108
0.013
0607
0609
-L- Providence Road
22+47.57
ON -GRADE
0.061
0.886
0.217
0.262
0.0270
0.004
0.184
9.953
0.035
0.078
0611
0610
-Y1- New Town Road
23+70.63
ON -GRADE
0.551
0.660
1.452
1.452
0.0012
0.036
1.154
7.905
0.285
0.299
0606
0611
-L- Providence Road
22+93.58
ON -GRADE
0.037
0.862
0.126
0.204
0.0424
0.004
0.151
8.179
0.029
0.052
0614
0612
-L- Providence Road
23+36.63
ON -GRADE
0.218
0.880
0.767
0.767
0.0313
0.012
0.469
6.814
0.080
0.298
0613
0613
-L- Providence Road
24+80.86
SAG
0.280
0.876
0.981
1.365
--
0.032
1.365
4.005
0.128
0.000
--
0614
-L- Providence Road
24+84.05
SAG
0.215
0.853
0.733
0.849
--
0.032
0.849
2.965
0.093
0.000
--
0702
-L- Providence Road
26+55.66
ON -GRADE
0.069
0.851
0.236
0.236
0.0373
0.039
0.172
2.006
0.078
0.064
0614
0703
-L- Providence Road
26+60.50
ON -GRADE
0.095
0.790
0.301
0.301
0.0409
0.034
0.214
2.333
0.080
0.087
0613
0901
-Y1- New Town Road
15+77.11
ON -GRADE
0.081
0.868
0.281
0.281
0.0114
0.028
0.230
3.306
0.091
0.051
0902
0902
-Y1- New Town Road
16+63.69
ON -GRADE
0.055
0.872
0.191
0.242
0.0251
0.018
0.191
3.584
0.063
0.052
0903
0903
-Y1- New Town Road
17+31.33
ON -GRADE
0.045
0.894
0.162
0.214
0.0520
0.013
0.161
3.681
0.046
0.052
0907
0904
-Y1- New Town Road
17+41.36
ON -GRADE
0.049
0.898
0.178
0.178
0.0250
0.015
0.144
3.517
0.053
0.033
0905
0905
-Y1- New Town Road
18+00.18
ON -GRADE
0.104
0.884
0.369
0.403
0.0426
0.023
0.281
3.275
0.077
0.122
--
0907
-Y1- New Town Road
18+01.58
ON -GRADE
0.054
0.864
0.187
0.239
0.0531
0.012
0.178
3.906
0.047
0.062
0602
1001
-Y1- New Town Road
24+20.88
ON -GRADE
0.063
0.855
0.214
0.214
0.0085
0.037
0.182
2.649
0.097
0.033
1003
1002
-Y1-New Town Road
25+10.75
ON -GRADE
0.134
0.734
0.394
0.394
0.0433
0.015
0.277
4.296
0.064
0.118
1004
1003
-Y1- New Town Road
26+43.19
ON -GRADE
0.125
0.851
0.425
0.458
0.0320
0.059
0.305
2.041
0.120
0.153
1005
1004
-Y1-New Town Road
26+43.19
ON -GRADE
0.170
0.553
0.375
0.493
0.0390
0.021
0.337
3.902
0.080
0.156
1006
-Y1-New Town Road
27+60.82
ON -GRADE
0.076
0.858
0.260
0.413
0.0393
0.049
0.274
2.106
0.104
0.139
1102
1006
-Y1-New Town Road
27+60.82
ON -GRADE
0.332
0.490
0.651
0.807
0.0424
0.009
0.464
7.676
0.070
0.342
1007
1007
-Y1- New Town Road
28+54.20
ON -GRADE
0.172
0.498
0.343
0.686
0.0585
0.015
0.414
5.059
0.074
0.272
1101
1101
-Y1-New Town Road
30+60.83
ON -GRADE
2.495
0.406
4.048
4.320
0.0523
0.022
1.340
7.886
0.177
2.980
1103
1102
-Y1-New Town Road
30+60.83
ON -GRADE
0.183
0.855
0.626
0.765
0.0684
0.025
0.433
3.640
0.092
0.332
1104
1103
-Y1-New Town Road
32+47.46
ON -GRADE
0.232
0.482
0.447
3.428
0.0174
0.027
1.565
7.890
0.214
1.862
1107
1104
-Y1-New Town Road
32+47.46
ON -GRADE
0.124
0.858
0.425
0.757
0.0294
0.009
0.451
8.140
0.072
0.306
1106
1106
-Y1- New Town Road
33+74.46
SAG
0.140
0.832
0.466
0.772
--
0.041
0.772
2.127
0.088
0.000
--
1107
-Y1- New Town Road
33+76.89
SAG
0.130
0.872
0.452
2.315
--
0.031
2.315
5.941
0.182
0.000
--
1113
-Y1- New Town Road
34+70.85
ON -GRADE
0.045
0.818
0.146
1.214
0.0219
0.037
0.752
4.222
0.156
0.461
--
1114
-Y1- New Town Road
35+05.15
ON -GRADE
0.120
0.826
0.396
2.345
0.0185
0.052
1.277
4.518
0.234
1.067
1113
1201
-Y1- New Town Road
36+09.05
ON -GRADE
0.850
0.392
1.333
3.403
0.0234
0.024
1.455
7.989
0.193
1.948
1114
1203
-Y1- New Town Road
37+19.12
ON -GRADE
0.778
0.455
1.416
3.304
0.0440
0.041
1.234
5.056
0.207
2.070
1201
1204
-Y1- New Town Road
38+32.81
ON -GRADE
1.744
0.391
2.730
2.746
0.0814
0.033
0.858
4.816
0.158
1.888
1203
1206
-Yl- New Town Road
1 38+77.46
ON -GRADE
1 0.025
1 0.882
1 0.088
1 0.088
1 0.0429
1 0.017
1 0.072
1 2.284
1 0.038
1 0.016
1 1204