SW5241001_Stormwater Report_20241118

STORMWATER
MANAGEMENT REPORT
FOR
COLLEGE ST TOWNHOMES
FRANKLINTON, FRANKLIN COUNTY, NC
AUGUST 26, 2024
PREPARED BY:
FLM Engineering, Inc.
PO Box 91727
Raleigh, NC 27675
919.423.8975
NC License No. C-4222
ENGINEERING

Table of Contents
1.0
Introduction........................................................................................................................1
2.0
Site Description..................................................................................................................1
3.0
Proposed Development......................................................................................................1
4.0
Stormwater Management...................................................................................................2
4.1
Design Data and Methodologies....................................................................................2
4.2
Pre -development Analysis..............................................................................................2
4.3
Post -development Analysis............................................................................................3
4.4
Stormwater Management Summary...............................................................................4
4.5
Nutrient Reduction..........................................................................................................5
5.0
Seasonal High Water Table...............................................................................................5
6.0
Limitations..........................................................................................................................5
Tables
Table 4-1 Pre -development Hydrologic Model Results
Table 4-2 Post -development Hydrologic Model Results
Table 4-3 Stormwater Management Summary
Table 4-4 Nutrient Loading Summary
© 2024 FLM Engineering, Inc. Page ii of iii August 26, 2024

Appendices
Appendix A
FEMA Firm Map
Appendix B
USGS Map Excerpt
Appendix C
Soils Map Excerpt
Appendix D
NRCS Soil Report
Appendix E
NOAA Rainfall Data
Appendix F
Pre -Development Watershed Map
Appendix G
Pre -Development Hydrologic Model
Appendix H
Post -Development Watershed Map
Appendix I
Post -Development Hydrologic Model
Appendix J
Simple Method Calculations
Appendix K
SCM Supplemental Form
Appendix L
Draw Down Calculations
Appendix M
Rip Rap Energy Dissipator Calculations
Appendix N
Operations & Maintenance Agreement
Appendix O
SNAP Tool Version 4.2
Appendix P
SHWT Report
Appendix Q
Impervious Area Calculations
© 2024 FLM Engineering, Inc. Page iii of iii August 26, 2024

1.0 Introduction
College St Townhomes is a proposed 79-unit townhomes development with associated site
infrastructure. This report details the stormwater management design for the project.
2.0 Site Description
College St Townhomes is a proposed 79-unit townhome development on approximately 22 acres
located on College Street in Franklinton, North Carolina (Franklin County PIN 1865-14-4278).
The existing site is generally wooded with no existing impervious surface. The site is bordered
on all sides by rural residential and agricultural land except for the north side, which is bordered
by College Street.
The site was investigated for the presence of wetlands and streams by Soil & Environmental
Consultants, Inc. There are three jurisdictional, buffered streams on the site: one running from
north to south through the middle of the site, a second running from west to east through the
middle of the site, and a third running from east to west along the northeastern boundary. There
are some jurisdictional wetlands associated with the east -west streams. The site is located within
the Town of Franklinton and is subject to Phase II Post -construction Stormwater requirements.
Based on a review of Federal Emergency Management Agency (FEMA) Flood Insurance Rate
Map (FIRM) number 3720186400K, dated April 16, 2003, no portion of the site lies within FEMA
designated 100-year or 500-year floodplains. The FEMA FIRM is included as Appendix A.
Excerpts from the United States Geological Survey (USGS) topographic 7.5' quadrangle map and
USDA NRCS Soil Survey Map are included within Appendices B and C, respectively. The
property generally drains from the north to the south. Topography on the site ranges from
elevation 370' to elevation 340'. Soils on the site are Hydrologic Soil Groups (HSGs) B and D as
described in the National Resources Conservation Service (NRCS) soils report in Appendix D.
3.0 Proposed Development
The proposed development will consist of 78 single-family residential lots and associated site
improvements. The site will drain to one (1) stormwater control measure (SCM). The total onsite
© 2024 FLM Engineering, Inc. Page 1 of 6 August 26, 2024

proposed impervious surface area for the project is approximately 231,325 square feet, or 5.31
acres, which is 24.1 % of the site as shown by the calculations in Appendix Q. Because the site
contains more than 24% built -upon area, the project is considered high density by the Phase II
Post -construction Stormwater standards.
4.0 Stormwater Management
4.1 Design Data and Methodologies
The design of the proposed stormwater management facilities was performed in accordance with
the North Carolina Department of Environmental Quality (NCDEQ) Stormwater Design Manual
and the Phase II Post -construction Stormwater requirements. Per the Phase II standards, high
density projects must use structural stormwater management systems that will:
• Control and treat runoff from the first one inch of rain;
• Draw down the treatment volume no faster than 48 hours, but no slower than 120 hours;
• Discharge the storage volume at a rate equal to or less than the pre -development
discharge rate for the 1-year, 24-hour storm; and
• Remove an eighty-five percent (85%) average annual amount of Total Suspended Solids
(TSS).
HydroCAD Version 8.50, a computer modeling software package, was used for the analysis of
stormwater routing and hydrology of the existing and proposed watersheds. The hydrology
calculations were performed using the Natural Resources Conservation Service (NRCS) Soil
Conservation Service (SCS) Technical Release 55 (TR-55) methodology. Franklin County lies
within the Type II rainfall distribution. The rainfall amounts for the site were obtained from the
National Oceanic and Atmospheric Administration (NOAA) and are included in Appendix E.
4.2 Pre -development Analysis
The pre -development watersheds were approximated based on recent aerial photography of the
site and topographic data. The peak flow rate for the 1-year, 24-hour storm event is based on the
topography, land use cover (such as open space, grass, woods, etc.), and soil type.
© 2024 FLM Engineering, Inc. Page 2 of 6 August 26, 2024

The 15.445-acre existing watershed was modeled in HydroCAD as one subcatchment as
described below. Refer to Appendix F for the pre -development watershed map.
• Subcatchment 1 S (Pre -development DA-1): Subcatchment 1 S is 59.801 acres and
drains from northwest to southeast. A time of concentration of 8.6 minutes was calculated
for the subcatchment using the TR-55 method.
The pre -development hydrologic model is included in Appendix G. Table 4-1 summarizes the pre -
development hydrologic model results.
Table 4-1
Pre -development Hydrologic Model Results
Subcatchment 1-year, 24-hour Storm Event Pre -
development Peak Flow (CFS)
Pre -development DA-1 30.38
4.3 Post -development Analysis
An analysis of the post -development runoff was performed using the same methods, parameters,
and assumptions as described in the pre -development analysis above. Based upon the hydrologic
calculations, the project does not create an increase in the peak runoff rate for the 1-year, 24-
hour storm event. Refer to Appendix H of this report for the post -development watershed map.
The 59.801-acre watershed was modeled in HydroCAD as two subcatchments as described
below.
• Subcatchment 2S (Post -development to SCM DA-1A): Subcatchment 2S is 8.55 acres
and includes the area draining to the proposed stormwater control measure. A
conservative time of concentration of six minutes was used for the subcatchment.
• Subcatchment 3S (Post -development Bypass DA-1 B): Subcatchment 3S is 51.251
acres and includes the area bypassing the proposed stormwater control measure. A time
of concentration of 8.6 minutes was calculated for the subcatchment using the TR-55
method.
© 2024 FLM Engineering, Inc. Page 3 of 6 August 26, 2024

The post -development hydrologic model is included in Appendix I. Table 4-2 summarizes the pre -
development hydrologic model results.
Table 4-2
Post -development Hydrologic Model Results
Subcatchment 1-year, 24-hour Storm Event Post -
development Peak Flow (CFS)
Post -development DA-1 29.91
4.4 Stormwater Management Summary
This project will not increase peak flow rate for the 1-year, 24-hour storm event. Stormwater
facilities that do not increase the peak flow rate help prevent adverse downstream impacts from
flooding and erosion. Table 4-3 compares the pre -development and post -development peak flow
rates for the design storm event.
Subcatchment
Table 4-3
Stormwater Management Summary
1-year, 24-hour Storm 1-year, 24-hour Storm
Event Pre -development Event Post -
Peak Flow (CFS) development Peak
Flow (CFS)
% Difference
DA-1 1 30.38 29.91 -1.5%
The stormwater control measure (SCM) was sized to control and treat runoff from the first one
inch of rain and to provide peak rate of runoff attenuation. The minimum required treatment
volume for the wetland was determined using the Discrete Curve Number Method as shown in
Appendix J.
The supplemental form for the proposed stormwater wetland is included in Appendix K. The
proposed stormwater wetland is anticipated to draw down the design volumes within two to five
days. Draw down calculations are provided in Appendix L. The inlet and outlet velocities are
reduced to non -erosive velocities through the use of rip rap energy dissipators, the calculations
for which are included in Appendix M. An operations and maintenance agreement for the SCM
is included in Appendix N.
© 2024 FLM Engineering, Inc. Page 4 of 6 August 26, 2024

4.5 Nutrient Reduction
The SNAP Tool Version 4.2 was used to calculate the pre- and post -development nutrient loads
and is included in Appendix O. The spreadsheet indicated that nitrogen loading in the post -
development with SCM condition is below the target of 4.0 pounds per acre per year and that the
phosphorus loading in the post -development with SCM condition is below the 0.8 pounds per acre
per year threshold. Thus, no additional nutrient buydown is required.
As shown in the Nutrient Export Summary of the tool, Table 4-5 summarizes the nutrient loads
for the pre-, post-, and post -development with SCM conditions.
Table 4-5
Nutrient Loading Summary
Nutrient
Pre -development
116
Post -development
Post Development
with SCMs
Total Nitrogen
1.15
4.06
2.39
Loading (lbs/ac/yr)
Total Phosphorus
0.50
0.83
0.57
Loading (lb/ac/yr)
5.0 Seasonal High Water Table
Soil & Environmental Consultants, PA (S&EC) evaluated the seasonal high water table (SHWT)
at the proposed SCM locations. Their report is included in Appendix P. Based on the report, the
stormwater wetland permanent pool is not anticipated to be within six inches of the SHWT and
thus, a clay or other liner will be required.
6.0 Limitations
This work was performed in a manner consistent with the level of care and skill ordinarily
exercised by other members of FLM Engineering's (FLM) profession practicing in the same
locality, and under similar conditions, as of the date any services were provided. FLM's opinions
and recommendations were necessarily based on a limited number of data and observations. It
is possible that actual conditions could vary beyond the data evaluated. Therefore, FLM makes
© 2024 FLM Engineering, Inc. Page 5 of 6 August 26, 2024

no guarantee or warranty, express or implied, regarding any services, communications, reports,
opinions, or instruments of service provided.
© 2024 FLM Engineering, Inc. Page 6 of 6 August 26, 2024

APPENDIX A
FEMA FIRM MAP

FLOOD HAZARD INFORMATION NOTES TO USERS SCALE
SEE FIS REPORT FOR ZONE DESCRIPTIONS AND INOEA MAP
THE INFORMATION DEPICTED ON THIS MAP AND SUPPORTING
DOCUMENTATION ARE ALSO AVAILABLE IN DIGITAL FORMAT AT
HTTP://FRIS.NC.GOV/FRIS
-WthoUp B ese Flood EI—I I" III
thFE zon WBOr DepthI AR
SPECMLROOD —Regulatory FlOOdway
HAIARDAREAB
— 0.2%Annual Chance Flood H.C.Id, Areas
of 1%Annual Chance Flood with Average
Depth Less Than One Feet R Wi h Dreinage
Areas of Less Than One Square Mile zone x
— Future Conditions 1%Annual
Chance Flood Hazard 7-1 x
OTHER AREAS OF — Area with Reduced Flood Risk due to Levee
FLOOD H—D See Notes'o,—I
OTHER — Areas Determined to be Outside the
AREAS 0.2% Annual Chance R..dplain zonex
Channel, Culvert, or Storm Sewer
»»» Accredhed or Pmvisi... IyAaredited
GENERAL Levee, Dike, or Floodwall
STRUCTURES Non-acoredited Levee, Dike, Or FI.StS.11
North Camllna Geodetic Survey bench mark
s ® Nl Geodetic Survey bench mark
sto® Cationaontractor Est NCFMP Survey bench mark
Cmss Sectianswith 1%Annual Chance
Water Surface Elevation (BFE)
eO -- -- C.—SIT—S..
------ Coastal Transect Baseline
- Profile Baseline
Hydoegraphie Feature
OTHER Limitof Study
FEATURES Jurisdiction Boundary
11-11-111
..�.,.ue. u.••i^Udhft fMOderete Wave Action(LIMWA)
BARRIER RESOURCES TEM JCBNS) NME
®nCBRSArea wwirc. s.m..w Otherwl aProtected Area
linch -1,000 feet 1:12,000
0 SOO 11000 2.000
Faet
Meea
0 150 300 fi00
PANEL LOCATOR
NORTH CAROUNA FLOODPIAIN MAPPING PROGRAM
E HATIONALFLOOD INSURANCEPROGRAM
CU ' INSURANCE RATE MAP
uq NORTH CAROLINA
Ga
vxxM 1864
C `1
77
.,onlains:
3 COMMUNRY CIO PANR S.
Vi r 11ws, taea
i
c)
lL
i-r
z
J MAP NUMBER
3720186400J
MAPREMSED
-- — - 4/16/2013

APPENDIX 6
USGS MAP EXCERPT

DocuSign Envelope ID: E06C80E5-CBEC-41E2-B18D-37268520A825
24-059
CP Land & Holdings Site / Franklin County
Feature A
Pond 1
Feature B
USGS Topographic Map w '
[Scale: Not to Scale]�a� .A�� Map provided by NCDEQ Iv
Division of Water Resources
Legend: nn
Locations are approxi-
a
-Approximate Site Boundary: C� mate and are provided for
reference only

APPENDIX C
SOILS MAP EXCERPT

Yy.

APPENDIX D
NRCS SOIL REPORT

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
Franklin County,
North Carolina
College St Townhomes
August 27, 2024

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.................................................................................................................
How Soil Surveys Are Made...............................................................................
SoilMap................................................................................................................
SoilMap.............................................................................................................
Legend...............................................................................................................
MapUnit Legend...............................................................................................
MapUnit Descriptions........................................................................................
Franklin County, North Carolina.....................................................................
CaB—Cecil sandy loam, 2 to 6 percent slopes ..........................................
CeB2—Cecil clay loam, 2 to 6 percent slopes, moderately eroded...........
HeB—Helena sandy loam, 2 to 6 percent slopes .......................................
PuC—Pacolet-Urban land complex, 2 to 10 percent slopes ......................
W—Water..................................................................................................
WaB—Wake-Saw-Wedowee complex, 2 to 8 percent slopes, rocky.........
WbD—Wake-Wateree-Wedowee complex, 8 to 15 percent slopes, rocky
WeC—Wedowee sandy loam, 6 to 10 percent slopes ...............................
Soil Information for All Uses.............................................................................
Soil Properties and Qualities.............................................................................
Soil Qualities and Features...........................................................................
HydrologicSoil Group................................................................................
References..........................................................................................................
10
11
11
13
13
14
15
17
18
18
21
24
26
26
26
26
31
2

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

_ I _
co TUC
ege`St r .
i
CeB2
o�-
___' WeCl
CaB CeB2 HeB r = <
V lt•
/4t W WbD WaB
i u

MAP LEGEND
Area of Interest (AOI)
0
Area of Interest (AOI)
Soils
0
Soil Map Unit Polygons
0.60
Soil Map Unit Lines
Soil Map Unit Points
Special
Point Features
Blowout
Borrow Pit
Clay Spot
0
Closed Depression
Gravel Pit
Gravelly Spot
®
Landfill
Lava Flow
41&
Marsh or swamp
eR►
Mine or Quarry
Miscellaneous Water
Q
Perennial Water
V
Rock Outcrop
+
Saline Spot
Sandy Spot
Severely Eroded Spot
Q
Sinkhole
Slide or Slip
oa
Sodic Spot
Custom Soil Resource Report
MAP INFORMATION
g
Spoil Area
The soil surveys that comprise your AOI were mapped at
1:24,000.
Q
Stony Spot
Very Stony Spot
Warning: Soil Map may not be valid at this scale.
Wet Spot
Enlargement of maps beyond the scale of mapping can cause
p
other
misunderstanding of the detail of mapping and accuracy of soil
.�
Special Line Features
line placement. The maps do not show the small areas of
contrasting soils that could have been shown at a more detailed
Water Features
scale.
-_-
Streams and Canals
Transportation
Please rely on the bar scale on each map sheet for map
H-F
Rails
measurements.
0,/
Interstate Highways
Source of Map: Natural Resources Conservation Service
ti
US Routes
Web Soil Survey URL:
Coordinate System: Web Mercator (EPSG:3857)
Major Roads
Local Roads
Maps from the Web Soil Survey are based on the Web Mercator
projection, which preserves direction and shape but distorts
Background
distance and area. A projection that preserves area, such as the
Aerial Photography
Albers equal-area conic projection, should be used if more
accurate calculations of distance or area are required.
This product is generated from the USDA-NRCS certified data as
of the version date(s) listed below.
Soil Survey Area: Franklin County, North Carolina
Survey Area Data: Version 27, 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: Apr 25, 2022—May
20, 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.
10

Custom Soil Resource Report
Map Unit Legend
Map Unit Symbol
Map Unit Name
Acres in AOI
Percent of AOI
CaB
Cecil sandy loam, 2 to 6
5.5
2.6%
percent slopes
Cecil clay loam, 2 to 6 percent
23.0%
CeB2
49.3
slopes, moderately eroded
HeB
Helena sandy loam, 2 to 6
8.8
4.1 %
percent slopes
Pacolet-Urban land complex, 2
PUC
68.5
31.9%
to 10 percent slopes
W
Water
1.9
0.9%
WaB
Wake -Saw -Wedowee complex,
0.4
0.2%
2 to 8 percent slopes, rocky
WbD
Wake-Wateree-Wedowee
4.8
2.2%
complex, 8 to 15 percent
slopes, rocky
WeC Wedowee sandy loam, 6 to 10
75.1
35.1 %
percent slopes
Totals for Area of Interest
214.4
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
11

Custom Soil Resource Report
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
pattern and relative proportion of the soils or miscellaneous areas are somewhat
similar. Alpha -Beta association, 0 to 2 percent slopes, is an example.
An undifferentiated group is made up of two or more soils or miscellaneous areas
that could be mapped individually but are mapped as one unit because similar
interpretations can be made for use and management. The pattern and proportion
of the soils or miscellaneous areas in a mapped area are not uniform. An area can
be made up of only one of the major soils or miscellaneous areas, or it can be made
up of all of them. Alpha and Beta soils, 0 to 2 percent slopes, is an example.
Some surveys include miscellaneous areas. Such areas have little or no soil
material and support little or no vegetation. Rock outcrop is an example.
12

Custom Soil Resource Report
Franklin County, North Carolina
CaB—Cecil sandy loam, 2 to 6 percent slopes
Map Unit Setting
National map unit symbol: 2spnw
Elevation: 70 to 1,400 feet
Mean annual precipitation: 39 to 47 inches
Mean annual air temperature: 55 to 63 degrees F
Frost -free period: 200 to 250 days
Farmland classification: All areas are prime farmland
Map Unit Composition
Cecil and similar soils: 95 percent
Minor components: 5 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Cecil
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 saprolite derived
from schist
Typical profile
Ap - 0 to 8 inches: sandy loam
Bt - 8 to 42 inches: clay
BC - 42 to 50 inches: clay loam
C - 50 to 80 inches: loam
Properties and qualities
Slope: 2 to 6 percent
Depth to restrictive feature: More than 80 inches
Drainage class: Well drained
Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high
(0.57 to 1.98 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Available water supply, 0 to 60 inches: Moderate (about 7.6 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 2e
Hydrologic Soil Group: A
Ecological site: F136XY820GA - Acidic upland forest, moist
Hydric soil rating: No
Minor Components
Pacolet, moderately eroded
Percent of map unit: 5 percent
13

Custom Soil Resource Report
Landform: Interfluves
Landform position (two-dimensional): Summit, shoulder
Landform position (three-dimensional): Interfluve
Down -slope shape: Convex
Across -slope shape: Convex
Hydric soil rating: No
CeB2—Cecil clay loam, 2 to 6 percent slopes, moderately eroded
Map Unit Setting
National map unit symbol: 3s4v
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: 80 percent
Minor components: 5 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
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 8 inches: clay loam
Bt - 8 to 48 inches: clay
BC - 48 to 58 inches: clay loam
C - 58 to 80 inches: sandy loam
Properties and qualities
Slope: 2 to 6 percent
Depth to restrictive feature: More than 80 inches
Drainage class: Well drained
Runoff class: Low
Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high
(0.57 to 1.98 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Available water supply, 0 to 60 inches: Moderate (about 8.3 inches)
14

Custom Soil Resource Report
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 2e
Hydrologic Soil Group: B
Ecological site: F136XY820GA - Acidic upland forest, moist
Hydric soil rating: No
Minor Components
Lloyd, moderately eroded
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
HeB—Helena sandy loam, 2 to 6 percent slopes
Map Unit Setting
National map unit symbol: 3s55
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: 90 percent
Minor components: 9 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Helena
Setting
Landform: Ridges
Landform position (two-dimensional): Summit, footslope
Landform position (three-dimensional): Interfluve
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: sandy loam
E - 8 to 12 inches: sandy loam
Bt - 12 to 39 inches: clay
BC - 39 to 46 inches: clay loam
C - 46 to 80 inches: coarse sandy loam
15

Custom Soil Resource Report
Properties and qualities
Slope: 2 to 6 percent
Depth to restrictive feature: More than 80 inches
Drainage class: Moderately well drained
Runoff class: Low
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 supply, 0 to 60 inches: Moderate (about 7.6 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 2e
Hydrologic Soil Group: D
Ecological site: F136XY810SC - Acidic upland forest, seasonally wet
Hydric soil rating: No
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
Wedowee
Percent of map unit: 3 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
Worsham, undrained
Percent of map unit: 1 percent
Landform: Depressions
Landform position (two-dimensional): Footslope
Down -slope shape: Concave
Across -slope shape: Concave
Hydric soil rating: Yes
16

Custom Soil Resource Report
PuC—Pacolet-Urban land complex, 2 to 10 percent slopes
Map Unit Setting
National map unit symbol: 3s5c
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: Not prime farmland
Map Unit Composition
Pacolet and similar soils: 55 percent
Urban land: 35 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Pacolet
Setting
Landform: Hillslopes on ridges
Landform position (two-dimensional): Backslope
Landform position (three-dimensional): Side slope
Down -slope shape: Linear
Across -slope shape: Convex
Parent material: Saprolite derived from granite and gneiss and/or schist
Typical profile
Ap - 0 to 8 inches: sandy loam
Bt - 8 to 27 inches: clay
BC - 27 to 35 inches: clay loam
C - 35 to 80 inches: sandy clay loam
Properties and qualities
Slope: 2 to 10 percent
Depth to restrictive feature: More than 80 inches
Drainage class: Well drained
Runoff class: Medium
Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high
(0.57 to 1.98 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Available water supply, 0 to 60 inches: Moderate (about 7.4 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 3e
Hydrologic Soil Group: B
Ecological site: F136XY820GA - Acidic upland forest, moist
Hydric soil rating: No
17

Custom Soil Resource Report
Description of Urban Land
Setting
Landform: Hillslopes on ridges
Landform position (two-dimensional): Backslope
Landform position (three-dimensional): Side slope
Down -slope shape: Linear
Across -slope shape: Convex
Parent material: Impervious layers over human transported material
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 8
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): 8
Hydric soil rating: No
WaB—Wake-Saw-Wedowee complex, 2 to 8 percent slopes, rocky
Map Unit Setting
National map unit symbol: 3s5z
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: Not prime farmland
Map Unit Composition
Wake, rocky, and similar soils: 35 percent
Saw, rocky, and similar soils: 30 percent
Wedowee, rocky, and similar soils: 20 percent
Minor components: 15 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
18

Custom Soil Resource Report
Description of Wake, Rocky
Setting
Landform: Interfluves
Landform position (two-dimensional): Summit
Landform position (three-dimensional): Interfluve
Down -slope shape: Convex
Across -slope shape: Convex
Parent material: Residuum weathered from granite and gneiss
Typical profile
A - 0 to 7 inches: gravelly loamy coarse sand
C - 7 to 11 inches: gravelly loamy sand
R - 11 to 80 inches: unweathered bedrock
Properties and qualities
Slope: 2 to 8 percent
Depth to restrictive feature: 8 to 20 inches to lithic bedrock
Drainage class: Excessively drained
Runoff class: Very high
Capacity of the most limiting layer to transmit water (Ksat): Very low to low (0.00 to
0.01 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Available water supply, 0 to 60 inches: Very low (about 0.7 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 4s
Hydrologic Soil Group: D
Ecological site: F136XY870GA - Lower piedmont acidic upland woodland, depth
restriction, dry
Hydric soil rating: No
Description of Saw, Rocky
Setting
Landform: Interfluves
Landform position (two-dimensional): Summit
Landform position (three-dimensional): Interfluve
Down -slope shape: Convex
Across -slope shape: Convex
Parent material: Residuum weathered from granite and gneiss
Typical profile
Ap - 0 to 8 inches: sandy loam
Bt - 8 to 20 inches: clay
BC - 20 to 26 inches: sandy clay loam
C - 26 to 29 inches: sandy loam
R - 29 to 80 inches: unweathered bedrock
Properties and qualities
Slope: 2 to 8 percent
Depth to restrictive feature: 20 to 40 inches to lithic bedrock
Drainage class: Well drained
Runoff class: Very high
19

Custom Soil Resource Report
Capacity of the most limiting layer to transmit water (Ksat): Very low to low (0.00 to
0.01 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Available water supply, 0 to 60 inches: Low (about 3.4 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 2e
Hydrologic Soil Group: C
Ecological site: F136XY83ONC - Acidic upland forest, depth restriction, dry -moist
Hydric soil rating: No
Description of Wedowee, Rocky
Setting
Landform: Interfluves
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 5 inches: sandy loam
BE - 5 to 10 inches: sandy clay loam
Bt - 10 to 35 inches: sandy clay
C - 35 to 80 inches: sandy clay loam
Properties and qualities
Slope: 2 to 8 percent
Depth to restrictive feature: More than 80 inches
Drainage class: Well drained
Runoff class: Medium
Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high
(0.57 to 1.98 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Available water supply, 0 to 60 inches: Moderate (about 8.2 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 2e
Hydrologic Soil Group: B
Ecological site: F136XY820GA - Acidic upland forest, moist
Hydric soil rating: No
Minor Components
Rion, rocky
Percent of map unit: 8 percent
Landform: Interfluves
Landform position (two-dimensional): Summit
Landform position (three-dimensional): Interfluve
Down -slope shape: Convex
20

Custom Soil Resource Report
Across -slope shape: Convex
Hydric soil rating: No
Wateree, rocky
Percent of map unit: 6 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
Rock outcrop
Percent of map unit: 1 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
WbD—Wake-Wateree-Wedowee complex, 8 to 15 percent slopes, rocky
Map Unit Setting
National map unit symbol: 3s60
Elevation: 200 to 1,400 feet
Mean annual precipitation: 37 to 60 inches
Mean annual air temperature: 50 to 66 degrees F
Frost -free period: 160 to 240 days
Farmland classification: Not prime farmland
Map Unit Composition
Wake, rocky, and similar soils: 35 percent
Wateree, rocky, and similar soils: 30 percent
Wedowee, rocky, and similar soils: 25 percent
Minor components: 10 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Wake, Rocky
Setting
Landform: Hillslopes on ridges
Landform position (two-dimensional): Backslope
Landform position (three-dimensional): Side slope
Down -slope shape: Linear
Across -slope shape: Convex
Parent material: Residuum weathered from granite and gneiss
21

Custom Soil Resource Report
Typical profile
A - 0 to 7 inches: gravelly loamy coarse sand
C - 7 to 11 inches: gravelly loamy sand
R - 11 to 80 inches: unweathered bedrock
Properties and qualities
Slope: 8 to 15 percent
Depth to restrictive feature: 8 to 20 inches to lithic bedrock
Drainage class: Excessively drained
Runoff class: Very high
Capacity of the most limiting layer to transmit water (Ksat): Very low to low (0.00 to
0.01 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Available water supply, 0 to 60 inches: Very low (about 0.7 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 6s
Hydrologic Soil Group: D
Ecological site: F136XY870GA - Lower piedmont acidic upland woodland, depth
restriction, dry
Hydric soil rating: No
Description of Wateree, Rocky
Setting
Landform: Hillslopes on ridges
Landform position (two-dimensional): Backslope
Landform position (three-dimensional): Side slope
Down -slope shape: Linear
Across -slope shape: Convex
Parent material: Saprolite derived from granite and gneiss
Typical profile
A - 0 to 7 inches: sandy loam
Bw - 7 to 28 inches: sandy loam
C - 28 to 35 inches: sandy loam
Cr - 35 to 80 inches: weathered bedrock
Properties and qualities
Slope: 8 to 15 percent
Depth to restrictive feature: 20 to 40 inches to paralithic bedrock
Drainage class: Well drained
Runoff class: Medium
Capacity of the most limiting layer to transmit water (Ksat): Very low to high (0.00
to 1.98 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Available water supply, 0 to 60 inches: Low (about 3.4 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 4e
Hydrologic Soil Group: B
22

Custom Soil Resource Report
Ecological site: F136XY870GA - Lower piedmont acidic upland woodland, depth
restriction, dry
Hydric soil rating: No
Description of Wedowee, Rocky
Setting
Landform: Hillslopes on ridges
Landform position (two-dimensional): Backslope
Landform position (three-dimensional): Side slope
Down -slope shape: Linear
Across -slope shape: Convex
Parent material: Saprolite derived from granite and gneiss and/or schist
Typical profile
Ap - 0 to 5 inches: sandy loam
BE - 5 to 10 inches: sandy clay loam
Bt - 10 to 35 inches: sandy clay
C - 35 to 80 inches: sandy clay loam
Properties and qualities
Slope: 8 to 15 percent
Depth to restrictive feature: More than 80 inches
Drainage class: Well drained
Runoff class: Medium
Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high
(0.57 to 1.98 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Available water supply, 0 to 60 inches: Moderate (about 8.2 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 3e
Hydrologic Soil Group: B
Ecological site: F136XY820GA - Acidic upland forest, moist
Hydric soil rating: No
Minor Components
Rion, rocky
Percent of map unit: 6 percent
Landform: Hillslopes on ridges
Landform position (two-dimensional): Backslope
Landform position (three-dimensional): Side slope
Down -slope shape: Linear
Across -slope shape: Convex
Hydric soil rating: No
Wilkes, rocky
Percent of map unit: 3 percent
Landform: Hillslopes on ridges
Landform position (two-dimensional): Backslope
Landform position (three-dimensional): Side slope
Down -slope shape: Linear
Across -slope shape: Convex
23

Custom Soil Resource Report
Hydric soil rating: No
Rock outcrop
Percent of map unit: 1 percent
Landform: Hillslopes on ridges
Landform position (two-dimensional): Backslope
Landform position (three-dimensional): Side slope
Down -slope shape: Linear
Across -slope shape: Convex
Hydric soil rating: No
WeC—Wedowee sandy loam, 6 to 10 percent slopes
Map Unit Setting
National map unit symbol: 3s64
Elevation: 200 to 1,400 feet
Mean annual precipitation: 37 to 60 inches
Mean annual air temperature: 50 to 66 degrees F
Frost -free period: 160 to 240 days
Farmland classification: Farmland of statewide importance
Map Unit Composition
Wedowee and similar soils: 85 percent
Minor components: 14 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Wedowee
Setting
Landform: Hillslopes on ridges
Landform position (two-dimensional): Backslope
Landform position (three-dimensional): Side slope
Down -slope shape: Linear
Across -slope shape: Convex
Parent material: Saprolite derived from granite and gneiss and/or schist
Typical profile
Ap - 0 to 4 inches: sandy loam
E - 4 to 7 inches: sandy loam
Bt - 7 to 23 inches: clay
BC - 23 to 35 inches: clay loam
C - 35 to 80 inches: sandy clay loam
Properties and qualities
Slope: 6 to 10 percent
Depth to restrictive feature: More than 80 inches
Drainage class: Well drained
Runoff class: Medium
24

Custom Soil Resource Report
Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high
(0.57 to 1.98 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Available water supply, 0 to 60 inches: Moderate (about 8.1 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 3e
Hydrologic Soil Group: B
Ecological site: F136XY820GA - Acidic upland forest, moist
Hydric soil rating: No
Minor Components
Rion
Percent of map unit: 8 percent
Landform: Hillslopes on ridges
Landform position (two-dimensional): Backslope
Landform position (three-dimensional): Side slope
Down -slope shape: Linear
Across -slope shape: Convex
Hydric soil rating: No
Vance
Percent of map unit: 5 percent
Landform: Hillslopes on ridges
Landform position (two-dimensional): Backslope
Landform position (three-dimensional): Side slope
Down -slope shape: Linear
Across -slope shape: Convex
Hydric soil rating: No
Wateree
Percent of map unit: 1 percent
Landform: Hillslopes on ridges
Landform position (two-dimensional): Backslope
Landform position (three-dimensional): Side slope
Down -slope shape: Linear
Across -slope shape: Convex
Hydric soil rating: No
25

Soil Information for All Uses
Soil Properties and Qualities
The Soil Properties and Qualities section includes various soil properties and
qualities displayed as thematic maps with a summary table for the soil map units in
the selected area of interest. A single value or rating for each map unit is generated
by aggregating the interpretive ratings of individual map unit components. This
aggregation process is defined for each property or quality.
Soil Qualities and Features
Soil qualities are behavior and performance attributes that are not directly
measured, but are inferred from observations of dynamic conditions and from soil
properties. Example soil qualities include natural drainage, and frost action. Soil
features are attributes that are not directly part of the soil. Example soil features
include slope and depth to restrictive layer. These features can greatly impact the
use and management of the soil.
Hydrologic Soil Group
Hydrologic soil groups are based on estimates of runoff potential. Soils are
assigned to one of four groups according to the rate of water infiltration when the
soils are not protected by vegetation, are thoroughly wet, and receive precipitation
from long -duration storms.
The soils in the United States are assigned to four groups (A, B, C, and D) and
three dual classes (A/D, B/D, and C/D). The groups are defined as follows:
Group A. Soils having a high infiltration rate (low runoff potential) when thoroughly
wet. These consist mainly of deep, well drained to excessively drained sands or
gravelly sands. These soils have a high rate of water transmission.
Group B. Soils having a moderate infiltration rate when thoroughly wet. These
consist chiefly of moderately deep or deep, moderately well drained or well drained
soils that have moderately fine texture to moderately coarse texture. These soils
have a moderate rate of water transmission.
26

Custom Soil Resource Report
Group C. Soils having a slow infiltration rate when thoroughly wet. These consist
chiefly of soils having a layer that impedes the downward movement of water or
soils of moderately fine texture or fine texture. These soils have a slow rate of water
transmission.
Group D. Soils having a very slow infiltration rate (high runoff potential) when
thoroughly wet. These consist chiefly of clays that have a high shrink -swell
potential, soils that have a high water table, soils that have a claypan or clay layer at
or near the surface, and soils that are shallow over nearly impervious material.
These soils have a very slow rate of water transmission.
If a soil is assigned to a dual hydrologic group (A/D, B/D, or C/D), the first letter is
for drained areas and the second is for undrained areas. Only the soils that in their
natural condition are in group D are assigned to dual classes.
27

� �'., ,, P u C' '� l N ' � Col/ege•St `tc . ;
� ♦ 1__ �° ��'�-� �� v _,, � � . '� �-� Jar
CeB2
-_''
CaB CeB2 <_
r
W WbD WaB
pODo0 HMp Unap Hoa bQ WA 7l Wo ogmho f ..

MAP LEGEND
Area of Interest (AOI)
0
Area of Interest (AOI)
Soils
Soil Rating Polygons
A
A/D
B
0
B/D
C
0
C/D
D
0
Not rated or not available
Soil Rating Lines
• •
A
i
A/D
..
B
t. s
B/D
r
C
. r
C/D
. r
D
Not rated or not available
Soil Rating Points
A
A/D
0
B
B/D
Custom Soil Resource Report
MAP INFORMATION
G
C
The soil surveys that comprise your AOI were mapped at
1:24,000.
C/o
D
Warning: Soil Map may not be valid at this scale.
0
Not rated or not available
Enlargement of maps beyond the scale of mapping can cause
Water Features
misunderstanding of the detail of mapping and accuracy of soil
-
Streams and Canals
line placement. The maps do not show the small areas of
Transportation
contrasting soils that could have been shown at a more detailed
1_114
Rails
scale.
^,/
Interstate Highways
Please rely on the bar scale on each map sheet for map
ti
US Routes
measurements.
Major Roads
Source of Map: Natural Resources Conservation Service
-
Local Roads
Web Soil Survey URL:
Coordinate System: Web Mercator (EPSG:3857)
Background
Aerial Photography
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: Franklin County, North Carolina
Survey Area Data: Version 27, 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: Apr 25, 2022—May
20, 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.
29

Custom Soil Resource Report
Table —Hydrologic Soil Group
Map unit symbol
Map unit name
Rating
Acres in AOI
Percent of AOI
CaB
Cecil sandy loam, 2 to 6
A
5.5
2.6%
percent slopes
CeB2
Cecil clay loam, 2 to 6
B
49.3
23.0%
percent slopes,
moderately eroded
HeB
Helena sandy loam, 2 to
D
8.8
4.1 %
6 percent slopes
Pacolet-Urban land
PUC
B
68.5
31.9%
complex, 2 to 10
percent slopes
W
Water
1.9
0.9%
WaB
Wake -Saw -Wedowee
D
0.4
0.2%
complex, 2 to 8
percent slopes, rocky
WbD
Wake-Wateree-
B
4.8
2.2%
Wedowee complex, 8
to 15 percent slopes,
rocky
WeC Wedowee sandy loam, 6 B
75.1
35.1 %
to 10 percent slopes
100.0%
Totals for Area of Interest
214.4
Rating Options —Hydrologic Soil Group
Aggregation Method: Dominant Condition
Component Percent Cutoff.- None Specified
Tie -break Rule: Higher
30

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=nresl42p2_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
31

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
32

APPENDIX E
NOAA RAINFALL DATA

NOAA Atlas 14, Volume 2, Version 3
Location name: Franklinton, North Carolina,
Latitude: 36.0964*, Longitude:-78.4535*
Elevation: 361 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 I PF graphical I Maps & aerials
PF tabular
951
2
3
6
15-min
0.0.810 74
9-0880
0.8703
1.011019
1. 3-1?33
1.24-1647
1.324.58)
(1.40--1467
1.45-1.75
1.511084
1.561691)
30-min
1.11
(1.03-1.21)
1.31
1 (1.21-1.43)
1.56
1 (1.43-1.69)
1.77
1 (1.63-1.92)
2.01
1 (1.84-2.18)
2.19
1 (2.00-2.38)
2.36
1 (2.14-2.56) 11
2.51
(2.26-2.73) 11
2.70
(2.41-2.93) 11
2.84
(2.52-3.10)
60-min 1.38 1.65 2.00 2.31 2.68 2.97 3.25 3.52 3.87
(1.28-1.50) (1.52-1.79) (1.84-2.16) (2.12-2.50) (2.45-2.90) (2.70-3.22) (2.94-3.52) (3.17-3.83) (3.45-4.21) (3.684.52
2-hr 1.63 1.95 2.38 2.78 3.26 3.68 4.08 4.48 5.00 5.45
(1.50-1.78) (1.79-2.12) (2.18-2.60) (2.54-3.03) (2.96-3.55) (3.32-4.00) (3.65-4.43) (3.98-4.86) (4.40-5.44) (4.76-5.94)
3-hr 1.73 2.07 2.54 2.99 3.54 4.02 4.50 5.00 5.66 F 6.25
(1 .58-1.91) 1 (1.89-2.28) 1 (2.32-2.80) 1 (2.72-3.28) 1 (3.20-3.89) 1 (3.61-4.41) 1 (4.004.93) (4.41-5.47) (4.94-6.19) 1 (5.39-6.86)
6-hr
2.08
(1.89-2.30)
2.48
1 (2.26-2.74) 11
3.04 3.59
(2.77-3.36) (3.26-3.96)
4.27
1 (3.85-4.69)
4.88
1 (4.37-5.35) 11
5.48 7 6.12 6.97 7.74
(4.87-6.01) 1 (5.38-6.69) 1 (6.05-7.62) 1 (6.62-8.48)
2.44
2.92
3.61 4.27
5.12
5.89
6.66 7.49 F 8.63 9.66
12-hr
(2.25-2.69)
1 (2.69-3.21) 11
(3.31-3.97) 1 (3.90-4.69)
1 (4.65-5.61)
1 (5.30-6.42)
1 (5.93-7.26) 11 (6.60-8.15) 1 (7.48-9.40) 1 (8.26-10.5)
24-hr 2.88 3.48 4.36 5.05 5.98 6.72 7.49 8.27 9.35 10.2
(2.69-3.10) 1 (3.25-3.74) 1 (4.07-4.68) 1 (4.70-5.41) 1 (5.56-6.41) 1 (6.23-7.22) 1 (6.91-8.04) 11 (7.60-8.89) (8.56-10.1) 1 (9.29-11.0)
2-day 3.35 4.03 5.01 5.77 6.80 7.61 8.43 9.28 10.4 11.4
(3.13-3.59) 1 (3.78-4.32) 11 (4.68-5.36) 1 (5.38-6.18) 1 (6.32-7.28) 1 (7.05-8.15) 1 (7.79-9.04) 11 (8.55-9.97) 1 (9.55-11.2) 1(10.3-12.3)
3-day 3.55 4.26 5.27 6.06 7.13 7.98 8.84 9.74 11.0 11.9
(3.32-3.79) 1 (3.994.56) 1 (4.93-5.63) (5.66-6.48) 1 (7.40-8.54) 1 (8.18-9.47) 11 (8.97-10.4) 1 (10.0-11.8) 11 (10.9-12.8)
3.75
4.49
5.53
6.35
F 8.36
9.26
F 10.2
11.5
12.5
4-day
(3.51-4.00)
1 (4.214.79) 11
(5.17-5.90)
(5.93-6.78)
(6.95-7.97)1
(7.76-8.93)
1 (8.57-9.90) 11
(9.39-10.9) 11
(10.5-12.3) 11
(11.4-13.4)
7-day
4. 8 4464
4. 6-5.53
5.91 6073
(6. 3-17..68
7.84 8097
8.791-310.0
9.60-141.1
10.5-12.2
11.7-183.7
12 7- 4.9
10-day 4.94 5.88 7.07 8.00 9.26 10.2 11.2 12.3 13.6
(4.64-5.27) 1 (5.52-6.26) 1 (6.63-7.52) (7.50-8.52) 1 (8.65-9.86) 1 (9.55-10.9) 1 (10.4-12.0) 11 (11.4-13.1) 11 (12.6-14.6) (13.5-15.8
20-day 6.62 7.81 9.23 10.4 11.9 13.1 14.3 15.5 17.2 18.5
(6.25-7.01) (7.38-8.27) (8.71-9.77) (9.77-11.0) (11.2-12.6) (12.3-13.9) (13.4-15.2) (14.5-16.5) (15.9-18.4) (17.1-19.8)
30-day 8.21 9.66 11.2 12.5 14.1 15.3 16.5 17.8 19.4 20.7
(7.77-8.68) (9.14-10.2) (10.6-11.9) (11.8-13.1) (13.3-14.9) (14.4-16.2) (15.5-17.5) (16.6-18.8) (18.1-20.6) (19.2-22.0)
45-day 10.4 12.2 14.0 15.4 17.1 18.5 19.8 21.1 22.9 24.2
(9.93-11.0) (11.6-12.8) (13.3-14.7) (14.6-16.1) (16.2-18.0) (17.5-19.5) (18.7-20.9) (19.9-22.3) (21.4-24.2) (22.6-25.6)
2.5
4.6
2.7
60-day 12 0-13.2 13.19-15.3 1516.5 3 17 1$ 8.9 18.9-20.8 20.2122.4 (21 4� 6 8) (22 7 2 3 24.2527.1 25 4� 8.5)
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 (PIMP) estimates and may be higher than currently valid PIMP values.
Please refer to NOAA Atlas 14 document for more information.
Back to Top
PF graphical

25
c: 20
CL
u
O1
-0 15
c
0
a 10
v
N
a
i
on .�
25
c 20
s
,L
a
-0 15
c
0
M
a 10
.+
PDS-based depth -duration -frequency (DDF) curves
Latitude: 36.09643, Longitude-78.4535`
c C C C C k- ►. >, >, >, >, >>, >, >, >,
EE N -0-0-0 -0,-0-0-0-bE E a -0 u1 � m 'n" �' N n5 v r o 0 0 �n o
Duration 14 r., n, v �O
1 2 5 10 25 50 100 200 500 1000
Average recurrence interval (years)
NOAA Atlas 14, Volume 2, Version 3 Created (GNM Fri May 17 14:16:05 2024
Back to Top
Maps & aerials
Small scale terrain
Average recurrence
interval
(years)
— 1
2
5
10
25
50
100
200
500
1000
Duration
— 5-min —
2-day
— I D-min —
3-day
15-min —
4-day
— 30-min —
7-day
— 6D-min —
1O-day
— 2fir —
20-day
— 3-hr —
30-day
— 6-nr —
45-day
— 12-hr —
60-day
— 24-hr

Fr an kl i nton=
V
3km
2mi
Large scale terrain
Lynchburg O
,burg Roanoke
N orfol
al till O
• . Durhar�i Rocky Mount
Greensboro Rligh
1�1 •
4 CAROtINA 'Greenvi +
0 � -
harl 100km '
60mi Iackson '
Large scale map
ld:k.lilu F
Norfoll
aton-)Wdem o reensboro p�
Rocky Mount
D
Ra eigh
North 0 reenvill
Carolina
arlotte —
100km 'ayetteville
60mi Jacksonville
Large scale aerial

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

APPENDIX F
PRE -DEVELOPMENT WATERSHED MAP

LEGEND
EX. PROPERTY LINE
-
EX. RIGHT-OF-WAY
EX. ADJACENT OWNERS
EX. EASEMENT
—400—
EX. MAJOR CONTOUR (10')
EX. MINOR CONTOUR (2')
EX.STREAM
EX. STREAM BUFFER
_._... _._... _._...
_._...
EX. SOIL LINE
OHW
OHW
EX. OVERHEAD ELECTRIC LINE
SD
SD
EX. STORM SEWER
W
W
EX. WATER LINE
-
-
EX. SANITARY SEWER
PRE -DEVELOPMENT DRAINAGE AREA BOUNDARY
— —
— —
PRE -DEVELOPMENT TIME OF CONCENTRATION FLOW PATH
SOIL TYPES
CeB2
CECIL CLAY LOAM, 2 TO 6 PERCENT SLOPES, MODERATELY ERODED
HSG B
HeB
HELENA SANDY LOAM, 2 TO 6 PERCENT SLOPES
HSG D
PuC
PACOLET-URBAN LAND COMPLEX, 2 TO 10 PERCENT SLOPES
HSG B
WeC
WEDOWEE SANDY LOAM, 6 TO 10 PERCENT SLOPES
HSG B
1�o
y
kp
n
-1
-- = a
rim
ENGINEERING
POST OFFICE BOX 91727
RALEIGH, NORTH CAROLINA 27675
PHONE: [phone]
FIRM NC LICENSE NUMBER C-4222
REVISION HISTORY
REV DESCRIPTION I DATE I BY
I ORIGINAL PLAN SIZE: 24" X 36" 1
100 50 0 100
SCALE: 1 INCH = 100 FEET
N SCALE ADJUSTMENT
THIS BAR IS 1 INCH IN LENGTH
ON ORIGINAL DRAWING
0 1"
IF IT IS NOT 1 INCH ON THIS
SHEET, ADJUST YOUR SCALE
ACCORDINGLY
EXHIBIT
COLLEGE STREET TOWNHOMES
FRANKLINTON, NC
DATE: 08/27/2024
SCALE: AS SHOWN
DESIGNED BY: FILM
APPROVED BY: FILM
PROJECT NO.: 24024
PRE -DEVELOPMENT
WATERSHED MAP
F
SHEET 1 OF 1
02024 THIS DRAWING SHALL NOT BE REPRODUCED IN WHOLE OR IN
PART WITHOUT WRITTEN PERMISSION OF FILM ENGINEERING, INC.

APPENDIX G
PRE -DEVELOPMENT HYDROLOGIC MODEL

Pre -development DA-1
Subcat Reach on Link

College St_Stormwater Management
Prepared by FLM Engineering, Inc. Printed 8/27/2024
HydroCADO 8.50 s/n 002245 © 2007 HydroCAD Software Solutions LLC Page 2
Area Listing (selected nodes)
Area CN Description
(acres) (subcatchment-numbers)
7.450
55
Woods, Good, HSG B (offsite)
(1 S)
14.051
55
Woods, Good, HSG B (onsite)
(1 S)
29.263
61
>75% Grass cover, Good, HSG B (offsite) (1 S)
1.433
77
Woods, Good, HSG D (onsite)
(1 S)
7.604
98
Paved parking & roofs (offsite)
(1 S)
59.801
TOTAL AREA

College St_Stormwater Management Type 11 24-hr 1-Year Rainfall=2.88"
Prepared by FLM Engineering, Inc. Printed 8/27/2024
HydroCADO 8.50 s/n 002245 © 2007 HydroCAD Software Solutions LLC Page 3
Summary for Subcatchment 1S: Pre -development DA-1
Runoff = 30.38 cfs @ 12.03 hrs, Volume= 2.080 af, Depth= 0.42"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 1-Year Rainfall=2.88"
Area (ac) CN DescriDtion
7.604 98 Paved parking & roofs (offsite)
29.263 61 >75% Grass cover, Good, HSG B (offsite)
7.450 55 Woods, Good, HSG B (offsite)
1.433 77 Woods, Good, HSG D (onsite)
14.051 55 Woods, Good, HSG B (onsite)
59.801 64 Weighted Average
52.197 Pervious Area
7.604 Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
0.9 100 0.0400 1.89 Sheet Flow, Sheet Flow
Smooth surfaces n= 0.011 P2= 3.46"
4.5 977 0.0510 3.64 Shallow Concentrated Flow, Shallow Concentrated Flow
Unpaved Kv= 16.1 fps
3.2 1,430 0.0224 7.37 117.87 Channel Flow, Channel Flow
Area= 16.0 sf Perim= 14.0' r= 1.14'
n= 0.033 Windinq stream, pools & shoals
8.6 2,507 Total

College St_Stormwater Management Type // 24-hr 1-Year Rainfall=2.88"
Prepared by FLM Engineering, Inc. Printed 8/27/2024
HydroCADO 8.50 s/n 002245 © 2007 HydroCAD Software Solutions LLC Page 4
Subcatchment 1 S: Pre -development DA-1
Hydrograph
34
32
30
cfs
+I-I�II�
1[ 24_ir_f-Lear_
30.38
I--1
28
26
-
pe
� 1 Ft6i4 i11--�2.i8l�--
24-1
T—
—1-
—1.11�V
-
PN1 �1r . ��� w
22
20
-1
t l
-t
fi l —1
-tt-
1—RUn6ff IV61dm&2-.W 6U
18
16
�
-4
1 4
1 4
Runoff-Popt"4.427
10
—f
t I
fi
t
t
1_
1 1 t Tr-7-0-6
8
6
I�
I-
14
�I
4
�I �I�"T I
4
2
1
1 I
I
I I I I
0
0 5 10
15 20
25 30
35 40
45 50
55
60 65 70
75 80 85 90 95 100 105 110 115 120
Time (hours)
— Runoff

APPENDIX H
POST -DEVELOPMENT WATERSHED MAP

LEGEND
EX. PROPERTY LINE
-
EX. RIGHT-OF-WAY
EX. ADJACENT OWNERS
EX. EASEMENT
—400—
EX. MAJOR CONTOUR (10-)
EX. MINOR CONTOUR (2)
EX.STREAM
EX. STREAM BUFFER
_._... _._... _._... _._...
EX. SOIL LINE
OHW OHW
EX. OVERHEAD ELECTRIC LINE
SD SD
EX. STORM SEWER
W W
EX. WATER LINE
EX. SANITARY SEWER
PROP. RIGHT-OF-WAY
PROP. LOT LINES
— — — — — — — — — — — PROP. SETBACK LINE
— — — — — — — — — — — PROP. EASEMENT
400 PROP. MAJOR CONTOUR (6)
PROP. MINOR CONTOUR IV)
POST -DEVELOPMENT DRAINAGE AREA BOUNDARY
— — — — — — POST -DEVELOPMENT TIME OF CONCENTRATION FLOW PATH
SOIL TYPES
CeB2
CECIL CLAY LOAM, 2 TO 6 PERCENT SLOPES, MODERATELY ERODED
HSG B
HeB
HELENA SANDY LOAM, 2 TO 6 PERCENT SLOPES
HSG D
PUC
PACOLET-URBAN LAND COMPLEX, 2 TO 10 PERCENT SLOPES
HSG B
WeC
WEDOWEE SANDY LOAM, 6 TO 10 PERCENT SLOPES
HSG B
FEV M
ENGINEERING
POST OFFICE BOX 91727
RALEIGH, NORTH CAROLINA 27675
PHONE: [phone]
FIRM NC LICENSE NUMBER C-4222
REVISION HISTORY
REV DESCRIPTION DATE BY
i [ E #
bti0 p
_ MI Alp
00 \\\
� SITE AREA EAST OF STREAM
SHALL NOT BE DEVELOPED AND
PUC \ �, THUS, WAS NOT INCLUDED IN
PRE -DEVELOPMENT ANALYSIS
390
- - 2S (POST -DEVELOPMENT _
BYPASS DA-1B)DRAINAGE
AREA=51.251 ACRES 2. I I
3 —
4) I ORIGINAL PLAN SIZE: 24" X 36"
WeC m ,5
.671
co \ \ \ I
,
cn
IV / 360� HeB
I�
100 so 0 100
\ 1
DA-1B Tc FLOW 950 w�
SEGMENT �� M SCALE: 1 INCH =100 FEET
N SCALE ADJUSTMENT
THIS BAR 131INCH IN LENGTH
d \ ON ORIGINAL DRAWING
23 22 21 20 �19 RE
4 13 12 11 �' 78
f D
` )`� 1 77 �• IF IT IS NOT 1 INCH ON THIS
76 SHEET, ADJUST YOUR SCALE
75 ACCORDINGLY
- 1
24z5zez72a — ! EXHIBIT
29 30 31 32 33 34 35 36 3- j
36 39 40 41 1
I_ 2s(Posr-DEvELOPMENT N I COLLEGE STREET TOWNHOMES
��--� TO SCM DA-1A DRAINAGE f I
AREA =8.55ACRES FRANKLINTON, NC
Ce82 fl�s7 Ss 55 54 _
-� 53 52 51, 50
49 48 47 46 45 44 43 42 I
_ LLI PROPOSED STORMWATER
WETLAND#1
� 59i g0 01 62 63 64 65 66 67 08 �
ff70Tii��Tlj� DATE: 08/27/2024
'!� 1
SCALE: AS SHOWN
1 DESIGNED BY: FILM
sea I APPROVED BY: FILM
" PROJECT NO.: 24024
POST -DEVELOPMENT
WATERSHED MAP
POINT OF
ANALYSIS
H
SHEET 1 OF 1
02024 THIS DRAWING SHALL NOT BE REPRODUCED IN WHOLE OR IN
PART WITHOUT WRITTEN PERMISSION OF FILM ENGINEERING, INC.

APPENDIX I
POST -DEVELOPMENT HYDROLOGIC MODEL

(2S
Post-deve opment
SCM A-1A
1P
StormwaterW
1L
to
Post -development DA-1
Subcat Reach Pon
Link
levelopment
ass DA-1 B

College St_Stormwater Management
Prepared by FLM Engineering, Inc. Printed 9/13/2024
HydroCADO 8.50 s/n 002245 © 2007 HydroCAD Software Solutions LLC Page 2
Area Listing (selected nodes)
Area CN Description
(acres) (subcatchment-numbers)
7.450
55
Woods, Good, HSG B (offsite) (3S)
5.781
55
Woods, Good, HSG B (onsite) (3S)
0.100
61
>75% Grass cover, Good, HSG B (2S)
29.263
61
>75% Grass cover, Good, HSG B (offsite) (3S)
1.153
77
Woods, Good, HSG D (onsite) (3S)
3.140
80
>75% Grass cover, Good, HSG D (2S)
5.310
98
Paved parking & roofs (2S)
7.604
98
Paved parking & roofs (offsite) (3S)
59.801
TOTAL AREA

College St_Stormwater Management Type 11 24-hr 1-Year Rainfall=2.88"
Prepared by FLM Engineering, Inc. Printed 9/13/2024
HydroCAD® 8.50 s/n 002245 ©2007 HydroCAD Software Solutions LLC Page 3
Summary for Subcatchment 2S: Post -development to SCM DA-1A
Runoff = 27.95 cfs @ 11.97 hrs, Volume= 1.396 af, Depth= 1.96"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 1-Year Rainfall=2.88"
Area (ac) CN
Description
5.310 98
Paved parking & roofs
3.140 80
>75% Grass cover, Good, HSG D
0.100 61
>75% Grass cover, Good, HSG B
8.550 91
Weighted Average
3.240
Pervious Area
5.310
Impervious Area
Tc Length
Slope Velocity Capacity Description
(min) (feet)
(ft/ft) (ft/sec) (cfs)
6.0
Direct Entry,
w
0
U.
Subcatchment 2S: Post -development to SCM DA-1A
Hydrograph
cfs
T
--
T
T
� 1 �
T�I1-2-eY
114hr4-ar-
27.95
T
T
T
T
14
4, peI R iM4a11--�218�-
T
T
T
T
T
T
:k"6_14e�74�50_[ai�
T
1 T
-R n6 f IV61 ml-=11An ciU
1
11
1
1 I Ruoolff�Oopth=�1$6�v-
�
T 11
T1
4
4--
-1 4 11 T TI�=�6.p ipi�
N�
-1
T I
'
-
1_ I T I
V J IV IJ LV LJ JV JJ YV YJ JV - IJ VV - JV JJ IVV IVJ IIV IIJ IGV
Time (hours)
— Runoff

College St_Stormwater Management Type 11 24-hr 1-Year Rainfall=2.88"
Prepared by FLM Engineering, Inc. Printed 9/13/2024
HydroCADO 8.50 s/n 002245 © 2007 HydroCAD Software Solutions LLC Page 4
Summary for Subcatchment 3S: Post -development Bypass DA-1 B
Runoff = 29.42 cfs @ 12.03 hrs, Volume= 1.932 af, Depth= 0.45"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 1-Year Rainfall=2.88"
Area (ac) CN DescriDtion
7.604 98 Paved parking & roofs (offsite)
29.263 61 >75% Grass cover, Good, HSG B (offsite)
7.450 55 Woods, Good, HSG B (offsite)
1.153 77 Woods, Good, HSG D (onsite)
5.781 55 Woods, Good, HSG B (onsite)
51.251 65 Weighted Average
43.647 Pervious Area
7.604 Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
0.9 100 0.0400 1.89 Sheet Flow, Sheet Flow
Smooth surfaces n= 0.011 P2= 3.46"
4.5 977 0.0510 3.64 Shallow Concentrated Flow, Shallow Concentrated Flow
Unpaved Kv= 16.1 fps
3.2 1,430 0.0224 7.37 117.87 Channel Flow, Channel Flow
Area= 16.0 sf Perim= 14.0' r= 1.14'
n= 0.033 Windinq stream, pools & shoals
8.6 2,507 Total

College St_Stormwater Management Type 11 24-hr 1-Year Rainfall=2.88"
Prepared by FLM Engineering, Inc. Printed 9/13/2024
HydroCAD® 8.50 s/n 002245 ©2007 HydroCAD Software Solutions LLC Page 5
u
3
0
LL
Subcatchment 3S: Post -development Bypass DA-1 B
Hydrograph
32
30
26
cfs
-
ieI 1124=h1r�-Y�alrr
29.42
2
-1
T
I�
t I
rt
i I
24
22
1
I-
1
1
Ral r4a 1 218�
1 Rluri-otf-Ar�a�51 �51�ai-
20
-
T
T
T
T
T
R—nc-ff IVcbI�—
18
—16
T I
I�
1-1
-+
1
----11— —alf
�Zuoo1ff-Vopth=�045i
12
T I
I-1
L
I_L
L
_L
L�nq_�q,pT
10
T
T II
T
71
T
71
T
T 11 TT�
8
6
I�
T
—14
H 4
T � -I
4
2
- 1
_t
L
I-i
L
-i
L T L1-1 T
0
0 5 10
15 20
25 30
35 40
45 50
55
60 65 70
75 80 85 90 95 100 105 110 115 120
Time (hours)
— Runoff

College St_Stormwater Management Type 11 24-hr 1-Year
Rainfall=2.88"
Prepared by FLM Engineering, Inc.
Printed 9/13/2024
HydroCADO 8.50 s/n 002245 © 2007 HydroCAD Software Solutions LLC
Page 6
Summary for Pond 1 P: Stormwater Wetland #1
Inflow Area = 8.550 ac, 62.11 % Impervious, Inflow Depth = 1.96" for 1-Year event
Inflow = 27.95 cfs @ 11.97 hrs, Volume= 1.396 of
Outflow = 0.69 cfs @ 15.02 hrs, Volume= 1.382 af, Atten= 98%,
Lag= 183.1 min
Primary = 0.69 cfs @ 15.02 hrs, Volume= 1.382 of
Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 of
Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Peak Elev= 350.90' @ 15.02 hrs Surf.Area= 15,851 sf Storage= 40,813 cf
Plug -Flow detention time= 1,189.3 min calculated for 1.382 of (99% of inflow)
Center -of -Mass det. time= 1,185.0 min ( 1,988.4 - 803.4 )
Volume Invert Avail.Storage Storage Description
#1 348.00' 96,006 cf Custom Stage Data (Irregular)Listed below
Elevation Surf.Area Perim. Inc.Store Cum.Store
Wet.Area
(feet) (sq-ft) (feet) (cubic -feet) (cubic -feet)
(sq-ft)
348.00 9,002 672.6 0 0
9,002
348.10 12,636 666.3 1,077 1,077
9,677
349.00 13,583 682.0 11,796 12,873
11,467
350.00 14,764 699.2 14,169 27,042
13,480
351.00 15,977 716.0 15,367 42,409
15,500
352.00 17,221 732.9 16,595 59,004
17,579
353.00 18,497 749.7 17,855 76,859
19,695
354.00 19,804 766.1 19,147 96,006
21,813
Device Routina Invert Outlet Devices
#1
Primary
347.00'
24.0" x 87.0' long Culvert RCP, groove end projecting, Ke= 0.200
Outlet Invert= 343.00' S= 0.0460 '/' Cc= 0.900 n= 0.013
#2
Device 1
348.00'
2.0" Vert. Orifice C= 0.600
#3
Device 1
349.25'
4.0" Vert. Orifice C= 0.600
#4
Device 1
352.00'
4.00' x 4.00' Horiz. Grate Limited to weir flow C= 0.600
#5
Secondary
352.50'
50.0' long x 17.5' breadth Broad -Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60
Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63
Primary OutFlow Max=0.69 cfs @ 15.02 hrs HW=350.90' (Free Discharge)
L1=Culvert (Passes 0.69 cfs of 32.18 cfs potential flow)
12=Orifice (Orifice Controls 0.18 cfs @ 8.08 fps)
3=Orifice (Orifice Controls 0.51 cfs @ 5.86 fps)
4=Grate ( Controls 0.00 cfs)
Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=348.00' (Free Discharge)
L5= Broad -Crested Rectangular Weir( Controls 0.00 cfs)

College St_Stormwater Management Type 11 24-hr 1-Year Rainfall=2.88"
Prepared by FLM Engineering, Inc. Printed 9/13/2024
HydroCAD® 8.50 s/n 002245 ©2007 HydroCAD Software Solutions LLC Page 7
Pond 1 P: Stormwater Wetland #1
Hydrograph
— Inflow
—Outflow
30 -
27.95 cfs
28 -1
-
—1
26
T
�p a �+
Ia
Inf A,
—Primary
—Secondary
W ea�8�-55V
24
IPAI 6ev=i5b 60�
22
�torage=40��13
20
N18 1-4
1 +
4
+
14
u
316 1
1
1 1
1 1 1
1 1
1 1
1 1
1 1 1 1
o i f: 14
-
12 I-1
+
1-4
+
H -+
101111111111111111111111�
8
-
6
4
0.00 cfs
0.69 cfs
0
0 5
10
15 20
25 30 35
40 45
50 55
60 65
70 75 80 85 90 95 100 105 110 115 120
Time (hours)

College St_Stormwater Management Type 11 24-hr 1-Year Rainfall=2.88"
Prepared by FLM Engineering, Inc. Printed 9/13/2024
HydroCAD® 8.50 s/n 002245 ©2007 HydroCAD Software Solutions LLC Page 8
Summary for Link 1 L: Post -development DA-1
Inflow Area = 59.801 ac, 21.59% Impervious, Inflow Depth > 0.67" for 1-Year event
Inflow = 29.91 cfs @ 12.03 hrs, Volume= 3.314 of
Primary = 29.91 cfs @ 12.03 hrs, Volume= 3.314 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Link 1 L: Post -development DA-1
Hydrograph
L
L
_
L
L
L
L
29.91 cfs
Jnf�fow
Area=�91.8� 1-mac
ILL
I4LI
I4
�+
I F
+- H
4�-I
I
L
L
L 1
1 L
L L
L
L
L
L
L I-,
L
Irt
LI
1 rt
t- II
T
II
L
rt
11
I�
L
14
L I
1 4
�
I4
L I
1 4
I 1
_IL
LIL
LII
L
LIL
LIL
LII
L
LIL
I�
-
L
-
Irt
- -
fit
-
rt
- -
t- II
- -
T
-
l II
- -
L
-
rt
- -
t- I
- -
-I�L
141--I
14
+
14L1
IIIIIIII
14�-
I
15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 12
Time (hours)
Inflow
Primary

APPENDIX J
SIMPLE METHOD CALCULATIONS

SCM-1A
Post -development
Impervious to SCM 1
Subcat Reach on Link

College St —Discrete Curve Number Model
Prepared by FLM Engineering, Inc. Printed 8/27/2024
HydroCADO 8.50 s/n 002245 © 2007 HydroCAD Software Solutions LLC Page 2
Area Listing (selected nodes)
Area CN Description
(sq-ft) (subcatchment-numbers)
231,304 98 Paved parking & roofs (SCM-1A)
231,304 TOTAL AREA

College St_Discrete Curve Number Model Type 1124-hr 1-Inch Rainfall=1.00"
Prepared by FLM Engineering, Inc. Printed 8/27/2024
HydroCADO 8.50 s/n 002245 © 2007 HydroCAD Software Solutions LLC Page 3
Summary for Subcatchment SCM-1A: Post -development Impervious to SCM 1
Runoff = 6.74 cfs @ 11.96 hrs, Volume= 15,245 cf, Depth= 0.79"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 1-Inch Rainfall=1.00"
Area (ac) CN Description
5.310 98 Paved parking & roofs
5.310 Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
6.0 Direct Entry,
Subcatchment SCM-1A: Post -development Impervious to SCM 1
Hydrograph
6.74 cfs
Type Ii 24-h'r �-In'c�
_
-4 -- Rll nloff Aret= 5.310-ai-,-
Ruligff Vglume=15,245 pf
1Runpffl Dgp�hT0.791
T;=6
yO nib
CN=98
I_j I I-i L I LI_t L
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 121
Time (hours)
— Runoff

SCM-1 B
Post -development
Pervious to SCM 1
Subcat Reach on Link

College St —Discrete Curve Number Model
Prepared by FLM Engineering, Inc. Printed 8/27/2024
HydroCADO 8.50 s/n 002245 © 2007 HydroCAD Software Solutions LLC Page 2
Area Listing (selected nodes)
Area CN Description
(sq-ft) (subcatchment-numbers)
136,778 61 >75% Grass cover, Good, HSG B (SCM-1 B)
4,356 80 >75% Grass cover, Good, HSG D (SCM-1 B)
141,134 TOTAL AREA

College St_Discrete Curve Number Model Type 1124-hr 1-Inch Rainfall=1.00"
Prepared by FLM Engineering, Inc. Printed 8/27/2024
HydroCADO 8.50 s/n 002245 © 2007 HydroCAD Software Solutions LLC Page 3
Summary for Subcatchment SCM-1 B: Post -development Pervious to SCM 1
Runoff = 0.00 cfs @ 0.00 hrs, Volume= 0 cf, Depth= 0.00"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-120.00 hrs, dt= 0.05 hrs
Type II 24-hr 1-Inch Rainfall=1.00"
Area (ac) CN Description
0.100 80 >75% Grass cover, Good, HSG D
3.140 61 >75% Grass cover, Good, HSG B
3.240 62 Weighted Average
3.240 Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
6.0 Direct Entry,
Subcatchment SCM-1 B: Post -development Pervious to SCM 1
Hydrograph
1
i i I
I
Type II 24-hr 1-Inch
Rai'nfa'11=1.60'I'
Runoff Area=3.240 ac
Runoff (Volume=01 ci
U_ Runoff Depth=0. 0"
TC=6.0 min
( CN 162
( I I I I
�I I
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Time (hours)
— Runoff

APPENDIX K
SCM SUPPLEMENTAL FORM

SUPPLEMENT-EZ COVER PAGE
PROJECT INFORMATION
1 Protect Name
_2 Protect Area (ac)
3 Coastal Wetland Area (ac)
4 .Surface Water Area (ac)
I b )s this Fro)ed High or Low Density)
6 Does this project use an off -site SCM?
)MPLIANCE WITH 02H .1003(4)
7 i Width of vegetated setbacks provided (feet)
8 Will the vegetated setback remain vegetated?
9 If BUA is proposed in the setback, does it meet NCAC 02H 1003(4)1
10 Is streambank stabilization proposed on this project?
E Carolina Ave Subdivision
22.06
High
No
Min. 30' from anv aoDlicable surface waters
_ Yes
N/A
No
NUMBER AND TYPE OF SCMs:
11
Infiltration System
12
Bioretention Cell
13
Wet Pond
14
Stormwater Wetland
Permeable Pavement
1
15
16
Sand Filter
17
Rainwater Harvesting RWH
18
Green Roof
19
Level S reader -Filter Strip LS-FS
20
Disconnected Impervious Surface (DIS)
21
Treatment Swale
22 Dry Pond
23 . StormFilter
24
Silva Cell
25 13ayfilter
26 I Filterra
FORMS LOADED
DESIGNER CERTIFICATION
27 1 Name and Title:
1 29 I Street address:
Phone
Email:
in Frazier. PE / Princip
FILM Engineering, Inc.
PO Box 91727
Raleigh, NC 27675
919.610.1051
Certification Statement:
I certify, under penalty, of law that this Supplement-FZ form and all supporting information were prepared under my direction or supervision; that
the information provided in the forth is, to the best of my knowledge and belief, true, accurate, and complete; and that the engineering plans,
specifications, operation and maintenance agreements and other supporting information are consistent with the information provided here.
o?oFEssr •��'q
SEA -
° 375
(1l"6 (
GINE�e
yq N 0' F? ;
S�gna!ur C signer
'�? 2- 4-
Date

DRAINAGE AREAS
t Is this a high density project? Yes
2 If so, number of drainage areaslSCMs 1
3 Does this project have low density areas No
j 4 If so, number of low density drainage areas 0
Is all/part of this project subject to previous rule
5 versionsl No
FORMS LOADED
DRAINAGE AREA INFORMATION
Entire Site
1
4
1 Type of SCM
Wetland
5
Total drainage area (sq ft)
372400
6
Onsite drainage area (sq ft)
940.600
372400
7
Offsite drainage area (sq ft)
940,600
8
Total BUA in project (sq ft)
231325 sf
231325 sf
9
New BUA on subdivided lots (subject to
permitting) (sq ft)
132990 sf
132990 sf
10
New BUA not on subdivided lots (subject to
permitting) (sf)
98335 sf
98335 sf
11
Offsite BUA (sq ft)
12
Breakdown of new BUA not on subdivided lots:
Parking (sq ft)
Sidewalk (sq ft)
24295 sf
24295 sf
Roof (sq ft)
Roadway (sq ft)
74040 sf
74040 sf
Future (sq ft)
_
Other, please specify in the comment box
below (sa ft)
13
New infiltrating permeable pavement on
subdivided lots (sq ft)
14
New infiltrating permeable pavement not on
subdivided lots (sq ft)
15permitting)
Existing BUA that will remain (not subject to
(so ft)
16
Existing BUA that is already permitted (sq ft)
17
Existing,BUA that will be removed (sq ft)
18
Percent BUA
25%
62%
19
Design storm (inches)
1.0 in
20
Desi n volume of SCM (cu ft)
16406 cf
21
aicu anon met od for design volume
Discrete Curve No..1
ADDITIONAL INFORMATION
22
Please use this space to provide any additional information about the
drainage area(s):

DRAINAGE AREAS
i 1 Is this a high density project? Yes
2 If so, number of drainage areas/SCMs 1
3 Does this project have low density areas? No _
4 If so, number of low density drainage areas 0
Is all/part of this project subject to previous rule
5 versions? No
FORMS LOADED
DRAINAGE AREA INFORMATION
Entire Site
4
Type of SCM
_
940.600
5 Total drainage area (sq ft)
6 Onsite drainage area (sq ft)
7
L88
9
Offste drainage area (sq ft)
Total BUA in projeet�sq i_t).
New BUA on subdivided lots (subject to
permitting) (s ft
940.600
231325 sf
132990 sf
10permitting)
New BUA not on subdivided lots (subject to
sf)
98335 sf
11
i Offsite BUA s ft
12
. Breakdown of new BUA not on subdivided lots:
Parkin (sq ft)
- Sidewalk (sq ft)
24295 sf
Roof sq ft)
Roadway (sq ft)
-future ft
Other, please specify in the comment box
below sq ft)
New infiltrating permeable pavement on
subdivided lots (sq ft)
74040 sf
13
14
New infiltrating permeable pavement not on
subdivided lots (sq ft)
15permitting)
Existing BUA that will remain (not subject to
aft)
16
Existing BUA that is already permitted (sq ft)
17 Existing BUA that will be a removed (sg ft)
18
Percent BUA
25%
19
Design storm (inches)
20
Design volume of SCM (cu ft
21 i
Calculation method for design volume
ADDITIONAL INFORMATION
Please use this space to provide any additional information about the
22 ;drainage area(s)

STORMWATER WETLAND
I Drainage area number _ 1
2 Minimum required treatment volume (cu ft)15245 d
WFUIRRAIL Yl�[ FROM rYlN _lam
3.Is the SCM sized to treat the SW from all surfaces al build -out?
Yes
4 Is the SCM located away from contaminated soils?
Yes
5. Whal are the side slopes of the SCM t"�
3.1
_
8i Does the SCM have retaining walls, gabion walls or other engineered
_
No
side slopes
Are the inlets, outlets, and receiving stream proleeted from erosion
7,
Yes
(10 year slorrt 7
8 Is there an overflow or bypass for inflow volume in excess of the
Yes
design volume?
91 What is the method for dewalering the SCM for maintenance?
Pump (preferred)
10 If applicable, will the SCM be cleaned out after construction?
Yes
111 Does the maintenance access comply with General MDC (8)?
Yes
1 Z Does the drainage easement comply with General MDC (9)?
Yes
13 If the SCM is on a single family lot, does (will?) the plat comply with
Yes
General MDC 10)7
_
14 Is there an O&M Agreement that comproes wtlh General MDC 11)?
Yes
151Is there an O&M Plan that complies with General MDC (12)?
Yes
( 16' Does the SCM follow the device specific MDC?
Yes
17 Was the SCM designed by an NC licensed ofessional?
Yes
19
Are the inlet(s) and outlet located in a manner that avoids short -
Yes
circuiling?
20 Are berms or baffles provided to improve the flow path? No
21 Does the orifice drawdown From below the top surface of the Yes
ermanenl,pool' _ _ _ _
221Does the we minimize impacts to the receiving channel from the Yes
peak attenuation above temporary pool (if applicable) (fmsl) 350.90
temporary pool (top of the temporary inundation zone) 349.25
'entrance {fmsl)
29' Elevation, bottom of forebay deep pool at shallowest point (at forebay
exit) fms0
346.00
30 Elevation. bottom of non-forebay deep pool at deepest point (fmsl)
345,00
tiny Zones
31 Area, total surface area of the SW wetland at temporary pool elev
(sa ft)
32 Area, temporary inundation zone at temporary pool elev (sq ft)
13,850.00
4.848.00
36 Percent area provided, temporary inundation zone (should be 30- 35%
45%
371 Percent area provided, shallow water zone should be 35-45%) 35%
38 Percent area provided, deep pool (forebay) should be 10-15%) 15%
39 Percent area provided, deeppool (non
should be 5-15%) 15%
40 Peak attenuation depth above teMorary inundation zone inches) 24 in
41 Temporary inundation zone depth (temporary pool to permanent pool) 15 in
(inches)
42 Shallow water zone depth (permanent pool to bottom of wetland) 9 in
(inches)
43 Depth, tuiebay at entrance (permanent pout to bottum of tuiebay 40 in
entrance) (inches) _
44 Depth, forebay at exit (permanent pool to bottom of forebay exit) 24 in
inches
45 Depth, non-forebay deep pools (permanent pool to deep pool bottom) 36 in
inches
461 If there is an orifice, diameter (inches) 2 in
471 If there is a weir. weir height (inches)
511 Has a soil amendment specification been provided? Yes
52i Has a landscaping plan that meets SW Welland MDC (12) been Yes
54 Does the temporary inundation zone planting comply with SW Yes
Wetland MDC (14)?
59'0 tho dam ctmcturo and tomporory fill clopoc plantod in non Yes
cum in turfgrass? _
561 Will caltaits be planted in the wetland? No
Please use uvs space to provide any
stormwater welland(s):

APPENDIX L
DRAW DOWN CALCULATIONS

Stormwater Wetland #1
Water Quality Volume Drawdown Calculations
Volume provided at 15" 16406 ft'
Orifice Equation
Outlet Diameter 2 in
Cd = 0.6
Ho / 3 = 0.42 ft
g = 32.2 ft / sect
A = 0.022 sf
Q = 0.068 cfs
241110.8322 seconds
Drawdown Time 67.0 hours

APPENDIX M
RIP RAP ENERGY DISSPATOR CALCULATIONS

DESIGN OF RIPRAP OUTLET PROTECTION WORKSHEET
Project
College Street Townhomes Date
Project No.
24024 Designer
Outlet ID
FES-SCM INLET
Outlet flowrate
37.45 cfs
Pipe diameter
36 inches
Number of pipes
1
Pipe separation
feet
Outlet pipe slope
1.52 percent
Fieure 8.06.b.1
25
Zone
20
U
y 15
0 es
0 10
5 Lont.3
0
0 2 4 6 8 10
Pipe diameter (ft)
Zone from graph above =
2
Outlet pipe diameter
36 in.
Length =
18.0 ft.
Outlet flowrate
37.5 cfs
Width =
9.0 ft.
Outlet velocity
5.3 ft/sec
Stone diameter =
6 in.
Material =
Class B
Thickness =
22 in.
Zone
Material
Diameter
Thickness
Length
Width
1
Class A
3
9
4 x D(o)
3 x D(o)
2
Class B
6
22
6 x D(o)
3 x D(o)
3
Class I
13
22
8 x D(o)
3 x D(o)
4
Class I
13
22
8 x D(o)
3 x D(o)
5
Class 11
23
27
10 x D(o)
3 x D(o)
6
Class II
23
1 27
10 x D(o)
3 x D(o)
7
Special study required
1. Calculations based on NY DOT method - Pages 8.06.05 through 8.06.06 in NC Erosion Control Manual
2. Outlet velocity based on full -flow velocity
College St Townhomes_RipRap Outlet Pipe Protection.xlsx
10/ 16/2024

DESIGN OF RIPRAP OUTLET PROTECTION WORKSHEET
Project
College Street Townhomes Date
Project No.
24024 Designer
Outlet ID
FES-SCM OUTLET
Outlet flowrate
17.55 cfs
Pipe diameter
24 inches
Number of pipes
1
Pipe separation
feet
Outlet pipe slope
4.6 percent
Fieure 8.06.b.1
25
Zone
20
U
y 15
w
0 10
5 Lont jL Zo
0
0 2 4 6 8 10
Pipe diameter (ft)
Zone from graph above =
1
Outlet pipe diameter
24 in.
Length =
8.0 ft.
Outlet flowrate
17.6 cfs
Width =
6.0 ft.
Outlet velocity
5.6 ft/sec
Stone diameter =
3 in.
Material =
Class A
Thickness =
9 in.
Zone
Material
Diameter
Thickness
Length
Width
1
Class A
3
9
4 x D(o)
3 x D(o)
2
Class B
6
22
6 x D(o)
3 x D(o)
3
Class I
13
22
8 x D(o)
3 x D(o)
4
Class I
13
22
8 x D(o)
3 x D(o)
5
Class 11
23
27
10 x D(o)
3 x D(o)
6
Class II
23
1 27
10 x D(o)
3 x D(o)
7
Special study required
1. Calculations based on NY DOT method - Pages 8.06.05 through 8.06.06 in NC Erosion Control Manual
2. Outlet velocity based on full -flow velocity
College St Townhomes_RipRap Outlet Pipe Protection.xlsx
10/ 16/2024

APPENDIX N
OPERATION & MAINTENANCE AGREEMENT

Operation & Maintenance Agreement
Project Name:
Project Location:
College St Townhomes
College St, Franklinton, NC
Cover Page
Maintenance records shall be kept on the following SCM(s). This maintenance record shall be kept in a log in a known set location.
Any deficient SCM elements noted in the inspection will be corrected, repaired, or replaced immediately These deficiencies can
affect the integrity of structures, safety of the public, and the pollutant removal efficiency of the SCM(s).
The SCM(s) on this project include (check all that apply & cc
Infiltration Basin
Quantity:
Infiltration Trench
Quantity:
Bioretention Cell
Quantity:
Wet Pond
Quantity:
Stormwater Wetland
Quantity:
Permeable Pavement
Quantity:
Sand Filter
Quantity:
Rainwater Harvesting
Quantity:
Green Roof
Quantity:
Level Spreader - Filter Strip
Quantity:
Proprietary System
Quantity:
Treatment Swale
Quantity:
Dry Pond
Quantity:
Disconnected Impervious Surface
Present:
User Defined SCM
Present:
Low Density
Present:
nding O&M sheets will
Location(s):
Location(s):
Location(s):
Location(s):
Location(s):
Location(s):
Location(s):
Location(s)
Location(s):
Location(s):
Location(s):
Location(s).-
Location(s):
Location(s):
Location(s):
Type:
oe aaaea amomaucan
CLICK TO UPDATE. O&M MANU
corner or s
I acknowledge and agree by my signature below that I am responsible for the performance of the maintenance procedures listed for
each SCM above, and attached O&M tables. I agree to notify NCDEQ of any problems with the system or prior to any changes to
the system or responsible party.
Responsible Party:
Title & Organization:
Street address:
City, state, zip:
Phone number(s):
Email:
Signature:
XU/I/T10,L
Patrick Rost,
Managing Member, CP Land and Holdings, LLC
105 Faircloud Ct
Cary, NC 27513
919.747.1669
[e-mail]
0
Date: q /
a Notary Public for the State of /'C V +4'
County of 1..,�e�/�� do hereby certify that
personally appeared before me this I ';� day of �fzx z� ;;�' 1- Li and
acknowledge the due execution of the Operations and Maintenance Agreement.
Witness my hand and official seal,
-
KUNTAL PATEL
Notary Public
Wake Co., North Carolina
My Commission Expires October 16, 2028
STORM-EZ
Version 1.5
My commission expires C f �X -1-6'�
O&M Agreement
9/18/2024
Page 1 of 4

Stormwater Wetland Maintenance Requirements
Important operation and maintenance procedures:
_ Immediately following construction of the stormwater wetland, conduct bi-weekly inspections and water
wetland plants bi-weekly until vegetation becomes established (commonly six weeks).
_ Before and immediately after plant installation, monitor water level and adjust to ensure that plants are
not completely inundated.
_ No portion of the stormwater wetland will be fertilized after the initial fertilization that is required to
establish the wetland plants.
- Stable groundcover will be maintained in the drainage area to reduce the sediment load to the wetland.
_ At least once annually, a dam safety expert will inspect the embankment. Any problems that are found
will be repaired immediately.
After the wetland is established, it shall be inspected quarterly and within 24 hours after every storm event greater
than 1.0 inches (or 1.5 inches if in a Coastal County). Records of operation and maintenance shall be kept in a known
set location and shall be available upon request.
Inspection activities shall be performed as follows. Any problems that are found shall be repaired immediately.
SCM element:
Potential problem:
How I will remediate the problem:
The entire wetland
Trash/debris is present.
Remove the trash/debris.
The perimeter of the
Areas of bare soil and/or
Regrade the soil if necessary to remove the gully, plant ground
wetland
erosive gullies have
cover and water until it is established. Provide lime and a one -
formed.
time fertilizer application.
The inlet pipe is clogged (if
Unclog the pipe. Dispose of the sediment off -site.
applicable).
The inlet pipe is cracked or
otherwise damaged (if
Repair or replace the pipe.
The inlet device
applicable).
Erosion is occurring in the
Regrade the swale if necessary and provide erosion control
swale (if applicable).
devices such as reinforced turf matting or riprap to avoid future
problems with erosion.
Sediment has accumulated
in the forebay to a depth of
Search for the source of the sediment and remedy the problem if
less than 15" or that
possible. Remove the sediment and dispose of it in a location
inhibits the forebay from
where it will not cause impacts to streams or the SCM.
functioning well.
The forebay
Erosion has occurred.
Provide additional erosion protection such as reinforced turf
matting or riprap if needed to prevent future erosion problems.
Weeds are present.
Remove the weeds, preferably by hand. If pesticide is used,
wipe it on the plants rather than spraying.

Stormwater Wetland Maintenance Requirements (Continued)
SCM element:
Potential problem:
How I will remediate the problem:
If the tree is <6" in diameter, remove the tree. If the tree is >6" in
A tree has started to grow
on the embankment.
diameter, consult a dam safety specialist to remove the tree.
An annual inspection by an
Embankment
appropriate professional
Make all needed repairs immediately.
shows that the
embankment needs repair.
Evidence of muskrat or
Consult a professional to remove muskrats or beavers and repair
beaver activity is present.
any holes or erosion.
Algal growth covers over
30% of the deep pool and
Consult a professional to remove and control the algal growth.
shallow water areas.
Cattails, phragmites or
other invasive plants cover
Remove the plants by hand or by wiping them with pesticide (do
30% of the deep pool and
not spray) - consult a professional.
shallow water areas.
The temporary inundation
zone remains flooded more
Unclog the outlet device immediately.
than 5 days after a storm
event.
Deep pool, shallow water
Determine the source of the problem: soils, hydrology, disease,
and shallow land areas
Plants are dead, diseased
etc. Remedy the problem and replace plants. Provide a one -
or dying.
time fertilizer application to establish the ground cover if
necessary.
Best professional practices
show that pruning is
Prune according to best professional practices.
needed to maintain optimal
plant health.
Sediment has accumulated
Search for the source of the sediment and remedy the problem if
and reduced the depth to
possible. Remove the sediment and dispose of it in a location
/o 75 of the original design
where it will not cause impacts to streams or the SCM.
depth of the deep pools.
Sediment has accumulated
Search for the source of the sediment and remedy the problem if
Micropool
and reduced the depth to
possible. Remove the sediment and dispose of it in a location
/o
75 of the original design
where it will not cause impacts to streams or the SCM.
depth.
Clogging has occurred.
gg g
Clean out the outlet device. Dispose of the sediment in a
location where it will not cause impacts to streams or the SCM.
The outlet device
The outlet device is
Repair or replace the outlet device.
damaged

Stormwater Wetland Maintenance Reauirements (Continued)
SCM element:
Potential problem:
How I will remediate the problem:
•
Erosion or other signs of
damage have occurred at
Repair the damage and improve the flow dissipation structure.
the outlet.
Discharges from the
The receiving water
wetland are causing
erosion or sedimentation in
Contact the local NCDEQ Regional Office.
the receiving water.

APPENDIX O
SNAP TOOL VERSION 4.2

Project Information Complete this sheet if required by your reviewing authority.
Contact them for any questions. Grey boxes/ text are optional.
SNAPv4.2.0 LOCATION
Project Name (optional):
College St Townhomes
Submission Date (optional):
8/26/2024
date
Local Jurisdiction / Reviewing Agency:
Franklinton
menu
Project Latitude Coordinates (optional):
36.098380
N
Project Longitude Coordinates (optional):
-78.453500
W
Development Land Use Type:
Part of Common Development Plan?
Designated Downtown Area?
Public Linear Road/Sidewalk Project?
Project Owner Type:
Parcel ID (optional):
Nutrient Management Watershed:
Tar —Pamlico
Upper —Tar —River
menu
menu
Subwatershed:
Phosphorus Delivery Zone:
Tar - Upper 03020101
menu
Nitrogen Delivery Zone:
Tar - Upper 03020101
menu
PROJECT DETAILS
Single Family Residential
menu
no
y/n
no
y/n
no
y/n
Private
menu
Disturbed Area:
ftZ
Project Activity:
New Development
menu
Project Drains to SA Waters?
no
y/n
Pre -Project Land Use:
forest
menu
Project Description (optional):
STORMWATER DETAILS
(Falls ONLY) Onsite Reduction % Req. % Project Uses LID/Runoff Volume Match?
Existing BUA/Development Onsite? yes y/n Local Gov't nutrient req's same as State?
Local Gov't cutoff date for Existing BUA: date Project Drains to Regional SCM?
Nitrogen Export Rate Target: 4.00 Ib/ac/yr Total Nitrogen Offset Credits Needed:
Phosphorus Export Rate Target: 0.80 Ib/ac/yr Total Phosphorus Offset Credits Needed:
no
y/n
yes
y/n
no
y/n
Ib/yr
Ib/yr

SNAP v4.2.0
Project Area and Offsite Land Cover Characteristics
Copy Paste VALUES ONLY for Best Results
Precipitation
Louisburg
Station:
Click here to scroll down to error messages on this sheet.
PROJECT AREA LAND COVERS TN EMC (mg/L) TP EMC (mg/L)
I
Roof 1.18 0.11
Roadway 1.64 0.34
Pre -Project Area (ft)
Post -Project Area (ft)
Change pre -to -post (ft2
88,452
88,452
74,040
74,040
Parking/Driveway/Sidewalk
1.42
0.18
68,833
68,833
Protected Forest
0.97
0.03
0
Managed Pervious/Landscaping
2.48
1.07
940,600
695,425
-245,175
Offsite or Existing Roof
1.18
0.11
0
Offsite or Existing Roadway
1.64
0.34
0
Offsite or Existing Parking/Driveway/Sidew
1.42
0.18
0
Offsite Protected Forest
0.97
0.03
0
Offsite Managed Pervious
2.48
1.07
0
0
CUSTOM LAND COVER 1
13,850
CUSTOM LAND COVER 2
0
CUSTOM LAND COVER 3
0
LAND TAKEN UP BY SCM 1.18
1 0.11
13,850
Total (Regulated & UnReg) Area
Project (Regulated) Area
940,600.00
940,600.00
940,600.00
940,600.00

SCM Characteristics
Stormwater Control Measure (SCM) Characteristics
SNAP v4.2.0 Copy Et Paste VALUES ONLY
for Best Results
IL Catchment ID
SCM ID
Type of SCM
IHydrologic soil group at SCM location
LSCM Description
Design Storm Size (inches/24hrs)
lPercent of Full Size
% Annual Effluent
r% Annual Overflow
% Annual ET/Infiltrated
ICustom % Annual Effluent
ICustom % Annual Overflow
ICustom % Annual ET/Infiltrated
ISCM Effluent TP EMC (mg/L)
ISCM Effluent TN EMC (mg/L)
ICustom Effluent TP EMC
ICustom Effluent TN EMC
SCM Land Cover TP EMC (mg/L)
LSCM Land Cover TN EMC (mg/L)
rThis SCM Drains to Numbered SCM
Catchment Routing
Catchment 1
Catchment 2
Catchment 3
Catchment 4
Catchment 5
Catchment 6
Click here to go to
SCM101's Land Cover Data
1 1 1
Drains to Drains to
101 102 103
Stormwater Wetland
B
1.00
108 %
57%
0%
0%
13 %
0%
0%
31%
0% 0%
0.00 0.00
0.15
0.94 0.00 0.00
I
I
0.11 0.00 0.00
1.18 0.00 0.00
0 0 0
Catchments Draining to Catchments Draining to Catchments Draining to
SCM 101 SCM 102 SCM 103

SCM Characteristics
Error Check - Missing SCM Area:
Error Check - Min/Max Size:
Error Check - Hydrology:
Error Check - Missing SCM Info:
Error Check - Drainage Data w/o SCM:
Error Checks - SCM Type:
SCM ID:
SCM Drainage Area Land Covers
Roof
Parking/Driveway/Sidewalk
Protected Forest
Managed Pervious/Landscaping
Offsite or Existing Roof
Offsite or Existing Roadway
Offsite or Existing Parking/Drive
Offsite Protected Forest
Offsite Managed Pervious
CUSTOM LAND COVER 1
CUSTOM LAND COVER 2
CUSTOM LAND COVER 3
LAND TAKEN UP BY SCM
TOTAL AREA DRAINING TO SCM (ftz):
101
102
103
Area Draining Directly to Area Draining Directly to Area Draining Directly to
SCM 101 (ft2) Z SCM 102 (ft2) SCM 103 (ft2)
Ilk
88,452
74,040
68,833
127,225
13,850
372,400
CATCHMENT AREA (ft2): 11 372,400
0
0

Nutrient Export Summary
Landcover Et SCM Data Review
Avg Annual precip (in) =
Total (Regulated +
Unregulated) Area (ft) =
Project (Regulated)
Area (ft) =
Net BUA (Project Area
Errors / Advisories
45.63
940,600
231,325 1 Net BUA indicates new development or expansion.
Custom Landcovers are
present:
no
Total Nitrogen Export Target
86.37
Scaled to Project Area (lb/yr):
SNAP v4.2.0
Errors / Advisories
SCM Area (ft) = 13,850
SCM Treated Area (ft) = 372,400
Catchment Routing: No errors
Treating Runoff from
Existing BUA or Offsite: no
Z missing or not If using tool for Stormwater Compliance, check Project
Disturbed Area (ft) = matching Info for missing Disturbed Area.
Total Phosphorus Export Target
17.27
Scaled to Project Area (lb/yr):
Area
ProjectTotal
Nutrient Export Summary
(Onsite +
(Onsite Only
Post -Project
Post -Project
Post -Project
Post -Project
Post -Project
Post -Project
Post -Project
Post-Projectbefore
before
after
after
SCM-Treated
SCM-Treated
Untreated
Untreated
Pre-ProjectTreatment
Treatment
Treatment
Treatment
Area Only
Only
.•
Built -Upon•
•
•
-
101
ME,
1110
WN
--------------------------
Total Nitrogen Change (lb/yr) Pre -to -Post
66%
L 14%
IN, oml
M
SCM/Catchment Summary
SCM ID and Type
Volume I TN Reduction TP Reduction TN Out TPOut
Reduction (%) M (%) flbs/ac/yr) (Ibs/ac/yr)
Catchment 1
30.52% 49.65%
49.01%
4.27 0.68
101: Stormwater Wetland
30.52%
49.65%
49.01%
4.27
0.68
102: NA
0.00%
0.00%
0.00%
0.00
0.00
103: NA
0.00%
0.00%
0.00%
0.00
0.00
Catchment 2
0.00%
0.00%
0.00%
0.00
0.00
201: NA
0.00%
0.00%
0.00%
0.00
0.00
202: NA
0.00%
0.00%
0.00%
0.00
0.00
203: NA
0.00%
0.00%
0.00%
0.00
0.00
Catchment 3
0.00%
0.00%
0.00%
0.00
0.00
301: NA
0.00%
0.00%
0.00%
0.00
0.00
302: NA
0.00%
0.00%
0.00%
0.00
0.00
303: NA
0.00%
0.00%
0.00%
0.00
0.00
Catchment 4
0.00%
0.00%
0.00%
0.00
0.00
401: NA
0.00%
0.00%
0.00%
0.00
0.00
402: NA
0.00%
0.00%
0.00%
0.00
0.00
403: NA
0.00%
0.00%
0.00%
0.00
0.00
Catchment 5
0.00%
0.00%
0.00%
0.00
0.00
501: NA
0.00%
0.00%
0.00%
0.00
0.00
502: NA
0.00%
0.00%
0.00%
0.00
0.00
503: NA
0.00%
0.00%
0.00%
0.00
0.00
Catchment 6
0.00%
0.00%
0.00%
0.00
0.00
601: NA
0.00%
0.00%
0.00%
0.00
0.00
602: NA
0.00%
0.00%
0.00%
0.00
0.00
603: NA
0.00%
0.00%
0.00%
0.00
0.00
Falls Lake ONLY: Onsite Reduction Compliance Check
Nitrogen
Phosphorus
Onsite % Reduction Requirement
86.37
87.60
51.58
17.27
17.88
12.30
Export Target Scaled to Area (lb/yr)
Export Load Post -Project Before Treatment
Total Reduction Need (lb/yr)
Onsite Reduction Need (lb/yr)
Onsite Export Target (lb/yr)
Project Area Post -Project After Treatment

Nutrient Management Strategy Watershed - Nutrient Offset Credit Reporting Form
SNAP v4.2.0
Please complete and submit the following information to the local government permitting your development
project to characterize it and assess the need to purchase nutrient offset credits. Contact and rule
implementation information can be found online at:
http://deq.nc.gov/about/divisions/water-resources/planning/nonpoint-source-management/nutrient-offset-information
Applicant Name:
Project Name:
Project Address:
Date: (mm/dd/yyyy)
PROJECT INFORMATION
ollc2c St Townhomcs
Project Area (sqft)
Post -Project Built -Upon Area %
Nutrient Management Watershed:
Subwatershed;
Nitrogen Delivery Zone:
Phosphorus Delivery Zone:
Development Land Use Type: Single Family Residential
Project Activity Type: New Development
940,600 Project Latitude: 36.098380
24.59% 1 Project Longitude:-78.453500
WATERSHED INFORMATION
Tar Pamlico
Upper Tar River
Tar - Upper 03020101
Tar - Upper 03020101
N Target Export Rate (lb/ac/yr):
4.00
P Target Export Rate (lb/ac/yr):
0.80
Nitrogen Delivery Factor:
100%
Phosphorus Delivery Factor:
100%
PERMANENT NUTRIENT OFFSET REQUEST
Post -Project Nitrogen Calculations - Projects with No Offsite or Built -Upon Area
(A)
(B)
(C)
(D)
(F)
(G)
(Where
Applicable)
TN Export
TN Remaining
TN Permanen
Additional
Total TN
TN Untreated
Target Load
TN Treated
Reduction
TN Delivery
Offsets
Local Gov't
Permanent
Load (lb/yr)
(Ib/yr)
Load (lb/yr)
Need (Ib/yr)
Factor (%)
Required
Offsets (Ib/yr)
Offsets to Buy
(lb/yr)
(lb/yr)
87.6
86.4
51.6
0.0
1
1 1.0
0.0
0.0
Post -Project
Phosphorus Calculations - Projects with No Offsite or Built -Upon
Area
(A)
(B)
(C)
(D)
(F)
(G)
(Where
Applicable)
TP Export
TP Remaining
TP Permanent
Additional
Total TP
TP Untreated
Target Load
TP Treated
Reduction
TP Delivery
Offsets
Local Gov't
Permanent
Load (lb/yr)
(lb/yr)
Load (lb/yr)
Need (lb/yr)
Factor (%)
Required
Offsets (lb/yr)
Offsets to Buy
(lb/yr)
(lb/yr)
17.9
17.3
12.3
0.0
1.0
0.0
0.0
LOCAL GOVERNMENT AUTHORIZATION
Local Government N
Staff Name:
Staff Email:
Local Government Authorizing Signatu

APPENDIX P
SHWT REPORT

Soil & Environmental Consultants, Inc.
8412 Falls of Neuse Road, Suite 104, Raleigh, NC 27615 • Phone [phone] • Fax [phone]
sandec.com
FLM Engineering
Attn: Jon Frazier
PO Box 91727
Raleigh, NC 27675
September 25, 2024
S&EC Job #15885.Sl
Re: Detailed storm water soils evaluation for CP Land and Holdings Property, S Chavis St,
Franklinton, NC
Dear Mr. Frazier:
Soil & Environmental Consultants, Inc (S&EC) performed a detailed soil evaluation within
the targeted area of the potential storm water control measure (SCM) on the site mentioned
above. The purpose of this evaluation was to provide additional information for the proper
design of the proposed SCM to treat the on -site storm water per 15A NCAC 02H storm water
rules. A soil morphological profile description was performed at the specified location to
determine depth to seasonal high water table (SHWT). The following is a brief report of the
methods utilized in this evaluation and the results obtained.
Soil/Site Evaluation Methodoloay
The site evaluation was performed by advancing hand auger borings to sufficient depth to
estimate SHWT. S&EC navigated to the pre -determined SCM location to describe soil
morphological conditions using standard techniques outlined in the "Field Book for
Describing and Sampling Soils, Version 3" published by the Natural Resources Conservation
Service (MRCS, 2012).
Soil/Site Conditions
This site is located in the Piedmont geological area of Franklin County. The soil boring was
in one proposed SCM location.
The soil observed at SB-1 is similar to a Vance series. These soils are well drained and have
slow permeability. Field investigation revealed SHWT indicators within 6.5 feet from the top
of the ground and there was no observed, apparent water table within 9 feet from the top of
the ground. A soil profile for SB-1 is shown below.

SB-1
Horizon
Depth
Matrix
Texture
Redoximorphic
Other notes
(inches)
Color
Features
A
0-3
1 OYR 4/2
Sandy Loam
Btl
3 26
1 OYR 5/4
Sandy Clay
Bt2
26 — 35
1 OYR 4/6
Clay Loam
BC
35 — 69
1 OYR 4/6
Sandy Clay
Loam
C1
69 — 80
1OYR 6/4
Sandy Clay
Loam
C2
80 — 108
IOYR 6/4
Sandy Clay
IOYR 7/1
Common, coarse
Loam
depletions, SHWT at
80"; No apparent water
table within 108"
At the time of the soils evaluation, the type of SCM had yet to be determined. Each storm
water device has different requirements with regard to in -situ soils. S&EC made no attempt
to measure soil saturated hydraulic conductivity (Ksat) in the underlying soil at this time.
Soil & Environmental Consultants, Inc is pleased to be of service in this matter and we look
forward to assisting in the successful completion of the project. If requested, S&EC can meet
on -site with state or local regulatory agencies to discuss our findings and recommendations.
Please feel free to call with any questions or comments.
Sincerely,
Soil & Environmental Consultants, Inc
John Lewis
NC Licensed Soil Scientist #1345
Encl: Soil Boring Location Map
P
134 5 Q-0
F N O RT'f''
Page 2 of 2

ilk

APPENDIX Q
IMPERVIOUS AREA CALCULATIONS

ONSITE IMPERVIOUS SURFACE
ROOF
ROAD
SIDEWALK
DRIVEWAY
10% TOWNHOME CONTINGENCY
No. SF per Total (SF)
78
1134
88452
1
74040
74040
1
24295
24295
78
416
32448
12090
TOTAL 231325