SW4240906_Stormwater Report_20240924

Stormwater Report
Project:
The Ridge Event Venue
FEI Project: 07035.001
Submitted To:
NCDEQ
July 31st,2024
Prepared For: Charlie Grubb
303 S. Broad Street
Winston Salem, NC 27101
[phone]
[e-mail] �� % i►!i��
,\��N CARD",%
�OQ *E SI
Prepared By: FEI Civil Engineers and Land Surveyors ¢0
8518 Triad Drive _ 670
Colfax,North Carolina 27235 '
(336)-544-6438 /4,..AOINK ' `%��
Engineer: Andrew Christ, PE -7 31/
g u\
FEI
Civil Engineers and Land Surveyors
Mil. ENGINEERS AND LANDSURVEYORS
85.15 Triad Drive
Colfax, ] 'v 2 235
.3 36) 852-99797
license No. C-0950

Table of Contents
INTRODUCTION 3
SITE INFORMATION 3
SITE DATA 3
WATERSHED DATA 3
NARRATIVE 4
CONCLUSION 4
APPENDIX 5
Stormwater Analysis Report
The Ridge Event Venue
Winston Salem,North Carolina feiconsulting.com

The Ridge Event Venue
Winston Salem
Forsyth County, North Carolina
INTRODUCTION
The proposed development is the construction of an Event center along Follansbee Road. This
18.25-acre parcel contains 0.46 acres of existing built-upon area (BUA). Of the existing BUA,
0.21-acres is to be removed and an additional 1.46 acres is to be added with this development
making a total of 1.72 acres of BUA. The site will mainly be a cut site and will remain a low-
density project. The project consists of a +/- 5,500 sf building with a small asphalt parking lot
next to the building and a larger gravel lot at the bottom for more attendees and small sheds to
accommodate storage needs. The effective area is 17.81 acres after subtracting the .44 acres of
water found from the total property (18.25 acres) within the property lines resulting in 9.8%
(1.72 acres) of built upon area. The building will be serviced with public water and sewer
provided by the City of Winston Salem/Forsyth County.
SITE INFORMATION
Site Data
Owner: Charles N Grubb, Shannon S Grubb
PIN: 6832170754, 6832073514, 6832076693
Reference: D.B. 3740, PG. 962
Development Standard: Winston Salem, NCDOT, and NCDEQ
Zoning: RS-20
Property Address: 4700 Follansbee rd Winston Salem, NC, 27107
Watershed Data
Watershed Classification: Non-water supply watershed
River Basin: Yadkin-Pee-Dee
Soil Types: CoA, SmD, SmF
Average Slope: 10%
Stormwater Report
The Ridge Event Venue
Winston Salem,North Carolina feiconsulting.com

NARRATIVE
The subject property consists of a floodplain and forested hills that drain to South Fork Muddy
Creek at the north side of the property. The onsite drainage area is 18.25 acre of hydrologic soil
group D with a combination of heavy tree coverage and grass cover. The existing drainage area
has a 10-year flow rate of 40.442 cfs (C=0.4, 110=5.54, Tc=10min).
During initial construction, erosion control measures will be in place to treat the disturbed area
runoff and allow offsite drainage to bypass the construction. Upon completion of construction,
the erosion control basins and perimeter measures will be removed to allow the stormwater to
be re-rerouted to match existing conditions.
The Site drainage will primarily be controlled by 6 swales throughout the property, Swales
designed to ensure stability and the specification has been provided for the liner that is
required on swales all swales (NAG SC 150) see detail in the appendix. Additionally, 3 legs of
storm sewer are to be used to help facilitate the water across Serenity Hills Lane and all efforts
to minimize the piping has been made. All storm sewer discharges onto appropriately sized rip
rap pads to help diffuse the concentrated flow before it ultimately reaches the South fork
muddy creek and its associated riparian buffer.
Table 1: Swale Calculations
Permanent Swale Chart
Area Qio Slope Side Liner Manning Depth Top Width Bottom Velocity T(PSF) Owi
(Ac.) C Cxl (ft3/s) (%) Slope Type s n (ft) (ft) Width(ft) (ft/s) (ft3
Swale /s)
1 0.78 0.42 2.30 1.79 3.10% 3:1 TRAP. NAG SC150(Straw/Coconut) 0.050 0.30 4.80 3.00 2.02 0.58 2.36
2 0.35 0.83 4.61 L61 1.50% 3:1 TRAP. NAG SC150(Straw/Coconut) 0.050 0.30 4.80 3.00 1.41 0.28 1.64
3 0.34 0.48 2.64 0.90 3.00% 3:1 V NAG SC150(Straw/Coconut) 0.034 0.50 3.00 0.00 2.91 0.94 2.18
4 0.68 0.90 4.99 3.39 9.00% 3:1 TRAP._ NAG SC150(Straw/Coconut) 0.050 0.30 4.80 3.00 3.44 1.68 4.03
5 1.27 0.66 3.63 4.61 9.00'% 3:1 TRAP. NAG SC150(Straw/Coconut) 0.050 0.33 4.98 3.00 3.63 1.85 4.78
6 0.54 0.90 4.99 2.69 1.50% 3:1 V NAG SC150(Straw/Coconut) 0.034 0.65 3.90 0.00 2.45 0.61 3.10 ,
CONCLUSION
The intent of the proposed development is to create a property that is fully functional yet still
naturally captivating for special events while maintaining a low-density impact to the overall
property. The storm water plan has been designed to maintain the pre-construction drainage
patterns utilizing swales, ditches, and storm sewer.
In summary,this development has been designed and is intended to minimize on-site impacts
to water quality from using natural drainage features, limiting disturbed area, and minimizing
storm drainage where possible to construct this development.
Stormwater Report
The Ridge Event Venue
Winston Salem,North Carolina feiconsulting.com

APPENDIX
• NOAA PRECIPITATION FREQUENCY
• MAPS
➢ VICINITY MAP
➢ USDA SOILS MAP
➢ USGS QUAD MAP
➢ FLOOD MAPS
• SWALE LINER SPECIFICATIONS
• DEED REFERENCE
Stormwater Report
The Ridge Event Venue
Winston Salem,North Carolina feiconsulting.com

NOAA PRECIPITATION FREQUENCY

NOAA Atlas 14,Volume 2,Version 3
\e Location name:Winston Salem,North Carolina, r
USA* MN
� Latitude:36.0174°,Longitude: -80.2486° s!
--5- Elevation:781 ft** 1.
�..,,,a *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
PDS-based point precipitation frequency estimates with 90% confidence intervals (in inches/hour)1
Average recurrence interval(years)
Duration 1 2 5 I 10 I 25 50 100 200 500 1000
5-min 4.55 I 5.41 6.31 6.92 7.61 8.05 8.44 8.76 9.08 9.30
(4.20-4.94) i (4.99.5,88) (5.82-6.86) (6.37-7.51) (6.96-8.24) (7.33-8.74) (7.63-9.16) (7.88-9.52) (8.10.9.90) (8.21-10.2)
10-min 3.64 4.33 5.06 5.54 6.07 6.41 6.70 6.94 7.19 7.32
(3.35-3.95) (3.99-4.70) (4.66-5.50) (5.09-6.01) (5.55-6.57) (5.84-6.95) (6.07-7.28) (6.25-7.55) (6.40-7.84) (6.46-8.00)
15-min 3.03 3.62 4.26 4.67 5.12 ' 5.41 5.65 5.84 6.03 6.13
(2 79-3.29) (3.34-3.94) (3.93-4.64) (4.30-5.07) (4.69.5.55) (4.92-5.87) (5.11-6.13) (5.26.6.35) (5.37.6.57) (5.40-6.69)
30-min 2.08 2.50 3.03 3.39 3.80 4.07 4.33 4.54 4.80 4.96
(1.91-2.25) (231-2.72) (2.79-3.29) (3.11-3.67) (3.47-4.11) (3,71-4.42) (3.91-4.70) (4.09.4.94) (4.28-5.23) (4.38-5.42)
60 min 1.29 1.57 1.94 2.20 2.53 2.76 2.98 3.19 3.44 3.62
(1.19-1.40) (1.45-1.71) (1.79-2.11) (2.03-2.39) (2.31-2.74) (2.51-2.99) (2.70-3.23) (2.87-3.46) (3.07-3.75) (3.20-3.96)
2-hr 0.753 0.914 1.14 1.31 1.52 1.68 1.84 1.99 2.18 2.32
(0.696-0.818) (0.844-0.994) (1.05-1.24) (1.20-1.42) (1.39-1.65) (1.53-1.82) (1.66-1.99) (1.78-2.16) (1.93-2.37) (2.03-2.54)
3-hr 0.536 0.651 0.813 0.934 1.09 1.21 1.33 1.44 1.59 1.70
(0.495-0.583) (0.602-0.708) (0.751-0.883) (0.859-1.01) (0.996-1.18) (1.10-1.31) (1.20-1.43) (1.29-1.56) (1.40-1.72) (1.48-1.85)
6-hr 0.328 0.396 0.495 0.571 0.672 0.750 0.830 0.909 1.02 1.10
(0.302-0.357) (0.366.0.432) (0.456-0.539) (0.524-0.620),(0.612-0.728) (0.679-0.813) (0.744-0.897) (0.807-0.983) (0.888-1.10) (0.947-1.19)
12-hr 0.193 0.233 0.292 0.339 0.403 0.454 0.507 0.561 0.636 0.694
(0.178-0.210) (0.215-0.255) (0.269-0.319) (0.311-0.369) (0.366-0.437) (0.409-0.491) (0.452.0.547) (0.494-0.605) (0.550-0.685) (0.591-0.748)
24-hr 0.116 0.140 0.176 0.204 0.242 0.272 0.303 0.335 0.379 0.414
(0.108-0.126) (0.130-0.152) (0.163-0.190) (0.188.0.220) (0.222-0.261) (0.249-0.294) (0.277-0.327) (0.305-0.363) (0.343.0.411) (0.373-0.450)
2-day 0.067 0.081 0.101 0.116 0.136 0.152 0.168 0.185 0.207 0.225
(0.063-0.072) (0.075-0.087) (0.094-0.108) (0.107-0 124) (0.126-0.146) (0.140-0.163) (0.155-0.181) (0.169-0.199) (0.189-0.224) (0.204-0.243)
3-day 0.047 0.057 0.071 0.081 0.095 0.107 0.118 0.130 0.146 0.158
(0.044-0.051) (0.053-0.061) (0.066-0.076) (0.076-0,087) (0.088-0.102) (0.099-0.114) (0.109-0.127) (0.119-0.140) (0.133-0.157) (0.144-0.171)
4-day 0.037 0.045 0.056 0.064 0.075 0.084 0.093 0.102 0.115 0.125
(0.035-0.040) (0.042-0.048) (0.052-0.059) (0.060-0.068) (0.070-0.080) (0.078-0.090) (0.086-0,100) (0.094-0.110) (0.105-0.124) (0.113-0.135)
7-day 0.024 0.029 0.035 0.041 0.047 0.053 0.058 0.064 0.072 0.078
(0.023-0.026) (0.027-0.031) (0.033-0.038) (0.038-0.043) (0.044-0.051),(0.049-0.056)I( 0.058
(0.059-0.069) (0.066-0.077) (0.071-0.084)
10-day 0.019 0.023 0.028 0.031 0.036 0.040 0.044 0.049 0.054 0.058
(0.018-0.020) (0.022-0.024) (0.026.0.029) (0.030-0.033) (0.034-0.039) (0.038-0.043) (0.041-0 047) (0.045-0.052) (0,050.0.058)(0.053-0.063)
20-day 0.013 0.015 0.018 0.020 0.023 0.026 0.028 0.031 0.034 0.037(0.012-0.014) (0.014-0.016) (0.017-0.019) (0.019-0.022).(0.022-0.025) (0.024-0.027) (0.026-0 030) (0.029-0.033) (0.032-0.037) (0.034-0.040)
30-day 0.010 0.012 0.014 0.016 0.018 0.020 0.021 0.023 0.025 0.027
(0.010-0.011) (0.012-0.013) (0.014-0.015)I(0.015-0.017) (0.017-0.019) (0.019-0.021) (0.020-0 023) (0.022-0.024) (0.023-0.027) (0.025-0.028)
45-day 0.009 0.010 0.012 0.013 0.015 0.016 0.017 0.018 0.020 0.021
(0.008-0.009) (0.010-0.011) (0.011-0.012) (0.012-0.014) (0.014-0.015) (0.015-0.017) (0.016-0.018) (0.017-0.019) (0.018-0.021) (0.019-0.022)
60-day 0.008 0.009 0.010 0.011 0.013 0.013 0.014 0.015 0.016 0.017
(0.007-0.008) (0.009-0.010) (0.010-0.011) (0.011-0.012) (0.012-0.013) (0.013-0.014) (0.014-0.015),10.014-0.016) (0.015-0.017) (0.016-0.018)
1 Precipitation frequency(PF)estimates in this table are based on frequency analysis of partial duration series(PDS).
Numbers in parenthesis are PF estimates at lower and upper bounds of the 90%confidence interval.The probability that precipitation frequency estimates(for
a given duration and average recurrence interval)will be greater than the upper bound(or less than the lower bound)is 5%.Estimates at upper bounds are not
checked against probable maximum precipitation(PMP)estimates and may be higher than currently valid PMP values.
Please refer to NOAAAtlas 14 document for more information.
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PF graphical

PDS-based intensity-duration-frequency (IDF) curves
Latitude: 36.0174°, Longitude: -80 2486°
101 Average recurrence
rnIer,aI
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E
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a' — 10-min — 3-day
c 15-mm — 4-day
10-1 :_-�-- 30-min — 7-day
+� �-�� — 60 man — 10 day
a
u — 2-hr — 20-day
v
a — 3-hr — 30-day
— 6-hr — 45-day
10-2 — 12-hr — 60-day
— 24-hr
1 2 5 10 25 50 100 200 500 1000
Average recurrence interval (years)
NOAA Atlas 14,Volume 2,Version 3 Created(GMT1 Thu Jul 25 12:32:07 2024
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Maps & aerials
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US Department of Commerce
National Oceanic and Atmospheric Administration
National Weather Service
Nati nal Water Center
1325 East West Highway
Silver Spring,MD 20910
Questions?:HDSC.Questionst noaa.gov
Disclaimer

MAPS

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Department of Cooperative Soil Survey,
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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/nrcs/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(202) 720-2600 (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(202) 720-6382 (TDD). USDA is an equal opportunity
provider and employer.
3

Contents
Preface 2
How Soil Surveys Are Made 5
Soil Map 8
Soil Map 9
Legend 10
Map Unit Legend 11
Map Unit Descriptions 11
Forsyth County, North Carolina 13
CaC—Casville sandy loam, 6 to 10 percent slopes 13
CoA—Codorus loam, 0 to 2 percent slopes, frequently flooded 14
FcD2—Fairview clay loam, 10 to 15 percent slopes, moderately eroded 16
Gu—Gullied land 17
HaA—Hatboro loam, 0 to 2 percent slopes, frequently flooded 17
SmC—Siloam sandy loam, 4 to 10 percent slopes 19
SmD—Siloam sandy loam, 10 to 15 percent slopes 20
SmF—Siloam sandy loam, 15 to 45 percent slopes 21
W—Water 22
WmC—Wickham fine sandy loam, mesic, 6 to 10 percent slopes 22
References 24
4

How Soil Surveys Are Made
Soil surveys are made to provide information about the soils and miscellaneous
areas in a specific area. They include a description of the soils and miscellaneous
areas and their location on the landscape and tables that show soil properties and
limitations affecting various uses. Soil scientists observed the steepness, length,
and shape of the slopes; the general pattern of drainage; the kinds of crops and
native plants; and the kinds of bedrock. They observed and described many soil
profiles. A soil profile is the sequence of natural layers, or horizons, in a soil. The
profile extends from the surface down into the unconsolidated material in which the
soil formed or from the surface down to bedrock. The unconsolidated material is
devoid of roots and other living organisms and has not been changed by other
biological activity.
Currently, soils are mapped according to the boundaries of major land resource
areas (MLRAs). MLRAs are geographically associated land resource units that
share common characteristics related to physiography, geology, climate, water
resources, soils, biological resources, and land uses (USDA, 2006). Soil survey
areas typically consist of parts of one or more MLRA.
The soils and miscellaneous areas in a survey area occur in an orderly pattern that
is related to the geology, landforms, relief, climate, and natural vegetation of the
area. Each kind of soil and miscellaneous area is associated with a particular kind
of landform or with a segment of the landform. By observing the soils and
miscellaneous areas in the survey area and relating their position to specific
segments of the landform, a soil scientist develops a concept, or model, of how they
were formed. Thus, during mapping, this model enables the soil scientist to predict
with a considerable degree of accuracy the kind of soil or miscellaneous area at a
specific location on the landscape.
Commonly, individual soils on the landscape merge into one another as their
characteristics gradually change. To construct an accurate soil map, however, soil
scientists must determine the boundaries between the soils. They can observe only
a limited number of soil profiles. Nevertheless, these observations, supplemented
by an understanding of the soil-vegetation-landscape relationship, are sufficient to
verify predictions of the kinds of soil in an area and to determine the boundaries.
Soil scientists recorded the characteristics of the soil profiles that they studied. They
noted soil color, texture, size and shape of soil aggregates, kind and amount of rock
fragments, distribution of plant roots, reaction, and other features that enable them
to identify soils. After describing the soils in the survey area and determining their
properties, the soil scientists assigned the soils to taxonomic classes (units).
Taxonomic classes are concepts. Each taxonomic class has a set of soil
characteristics with precisely defined limits. The classes are used as a basis for
comparison to classify soils systematically. Soil taxonomy, the system of taxonomic
classification used in the United States, is based mainly on the kind and character
of soil properties and the arrangement of horizons within the profile. After the soil
5

Custom Soil Resource Report
scientists classified and named the soils in the survey area, they compared the
individual soils with similar soils in the same taxonomic class in other areas so that
they could confirm data and assemble additional data based on experience and
research.
The objective of soil mapping is not to delineate pure map unit components; the
objective is to separate the landscape into landforms or landform segments that
have similar use and management requirements. Each map unit is defined by a
unique combination of soil components and/or miscellaneous areas in predictable
proportions. Some components may be highly contrasting to the other components
of the map unit. The presence of minor components in a map unit in no way
diminishes the usefulness or accuracy of the data. The delineation of such
landforms and landform segments on the map provides sufficient information for the
development of resource plans. If intensive use of small areas is planned, onsite
investigation is needed to define and locate the soils and miscellaneous areas.
Soil scientists make many field observations in the process of producing a soil map.
The frequency of observation is dependent upon several factors, including scale of
mapping, intensity of mapping, design of map units, complexity of the landscape,
and experience of the soil scientist. Observations are made to test and refine the
soil-landscape model and predictions and to verify the classification of the soils at
specific locations. Once the soil-landscape model is refined, a significantly smaller
number of measurements of individual soil properties are made and recorded.
These measurements may include field measurements, such as those for color,
depth to bedrock, and texture, and laboratory measurements, such as those for
content of sand, silt, clay, salt, and other components. Properties of each soil
typically vary from one point to another across the landscape.
Observations for map unit components are aggregated to develop ranges of
characteristics for the components. The aggregated values are presented. Direct
measurements do not exist for every property presented for every map unit
component. Values for some properties are estimated from combinations of other
properties.
While a soil survey is in progress, samples of some of the soils in the area generally
are collected for laboratory analyses and for engineering tests. Soil scientists
interpret the data from these analyses and tests as well as the field-observed
characteristics and the soil properties to determine the expected behavior of the
soils under different uses. Interpretations for all of the soils are field tested through
observation of the soils in different uses and under different levels of management.
Some interpretations are modified to fit local conditions, and some new
interpretations are developed to meet local needs. Data are assembled from other
sources, such as research information, production records, and field experience of
specialists. For example, data on crop yields under defined levels of management
are assembled from farm records and from field or plot experiments on the same
kinds of soil.
Predictions about soil behavior are based not only on soil properties but also on
such variables as climate and biological activity. Soil conditions are predictable over
long periods of time, but they are not predictable from year to year. For example,
soil scientists can predict with a fairly high degree of accuracy that a given soil will
have a high water table within certain depths in most years, but they cannot predict
that a high water table will always be at a specific level in the soil on a specific date.
After soil scientists located and identified the significant natural bodies of soil in the
survey area, they drew the boundaries of these bodies on aerial photographs and
6

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.
8

Custom Soil Resource Report
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Custom Soil Resource Report
Map Unit Legend
Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI
CaC Casville sandy loam,6 to 10 3.1 4.0%
percent slopes
CoA Codorus loam,0 to 2 percent 24.0 31.1%
slopes,frequently flooded
FcD2 Fairview clay loam, 10 to 15 0 6 0.8%
percent slopes,moderately
eroded
Gu Gullied land 0 3 0.4%
HaA Hatboro loam,0 to 2 percent 5.9 7.7%
slopes,frequently flooded
SmC Siloam sandy loam,4 to 10 7 0 9 1%
percent slopes
SmD Siloam sandy loam, 10 to 15 13.0 16.8%
percent slopes
SmF Siloam sandy loam, 15 to 45 20.0 26.0%
percent slopes
W Water 2.9 3.8%
WmC Wickham fine sandy loam, 0.2 0.3%
mesic,6 to 10 percent slopes
Totals for Area of Interest 76.9 100.0%
Map Unit Descriptions
The map units delineated on the detailed soil maps in a soil survey represent the
soils or miscellaneous areas in the survey area. The map unit descriptions, along
with the maps, can be used to determine the composition and properties of a unit.
A map unit delineation on a soil map represents an area dominated by one or more
major kinds of soil or miscellaneous areas. A map unit is identified and named
according to the taxonomic classification of the dominant soils. Within a taxonomic
class there are precisely defined limits for the properties of the soils. On the
landscape, however, the soils are natural phenomena, and they have the
characteristic variability of all natural phenomena. Thus, the range of some
observed properties may extend beyond the limits defined for a taxonomic class.
Areas of soils of a single taxonomic class rarely, if ever, can be mapped without
including areas of other taxonomic classes. Consequently, every map unit is made
up of the soils or miscellaneous areas for which it is named and some minor
components that belong to taxonomic classes other than those of the major soils.
Most minor soils have properties similar to those of the dominant soil or soils in the
map unit, and thus they do not affect use and management. These are called
noncontrasting, or similar, components. They may or may not be mentioned in a
particular map unit description. Other minor components, however, have properties
and behavioral characteristics divergent enough to affect use or to require different
11

Custom Soil Resource Report
management. These are called contrasting, or dissimilar, components. They
generally are in small areas and could not be mapped separately because of the
scale used. Some small areas of strongly contrasting soils or miscellaneous areas
are identified by a special symbol on the maps. If included in the database for a
given area, the contrasting minor components are identified in the map unit
descriptions along with some characteristics of each. A few areas of minor
components may not have been observed, and consequently they are not
mentioned in the descriptions, especially where the pattern was so complex that it
was impractical to make enough observations to identify all the soils and
miscellaneous areas on the landscape.
The presence of minor components in a map unit in no way diminishes the
usefulness or accuracy of the data. The objective of mapping is not to delineate
pure taxonomic classes but rather to separate the landscape into landforms or
landform segments that have similar use and management requirements. The
delineation of such segments on the map provides sufficient information for the
development of resource plans. If intensive use of small areas is planned, however,
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
Forsyth County, North Carolina
CaC—Casville sandy loam, 6 to 10 percent slopes
Map Unit Setting
National map unit symbol: 2mpkt
Elevation: 200 to 1,400 feet
Mean annual precipitation: 37 to 60 inches
Mean annual air temperature: 59 to 66 degrees F
Frost-free period: 200 to 240 days
Farmland classification: Farmland of statewide importance
Map Unit Composition
Casville and similar soils: 85 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Casville
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 6 inches: sandy loam
Bt- 6 to 36 inches: clay
Cl -36 to 50 inches: sandy loam
C2- 50 to 80 inches: 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
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: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Available water supply, 0 to 60 inches: Moderate (about 7.8 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 3e
Hydrologic Soil Group: C
Ecological site: F136XY320VA- Mesic temperature regime, acidic upland forest,
moist
Hydric soil rating: No
13

Custom Soil Resource Report
CoA—Codorus loam, 0 to 2 percent slopes, frequently flooded
Map Unit Setting
National map unit symbol: 2mp81
Elevation: 200 to 1,560 feet
Mean annual precipitation: 40 to 48 inches
Mean annual air temperature: 50 to 59 degrees F
Frost-free period: 160 to 200 days
Farmland classification: Prime farmland if drained and either protected from flooding
or not frequently flooded during the growing season
Map Unit Composition
Codorus and similar soils: 85 percent
Minor components: 15 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Codorus
Setting
Landform: Flood plains
Landform position (three-dimensional): Tread
Down-slope shape: Concave
Across-slope shape: Linear
Parent material: Loamy alluvium derived from igneous and metamorphic rock
Typical profile
A -0 to 8 inches: loam
Bw1 - 8 to 18 inches: silty clay loam
Bw2- 18 to 30 inches: loam
Bw3-30 to 38 inches: silt loam
BCg-38 to 50 inches: silt loam
Cg- 50 to 80 inches: silt loam
Properties and qualities
Slope: 0 to 2 percent
Depth to restrictive feature: More than 80 inches
Drainage class: Somewhat poorly 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:About 6 to 24 inches
Frequency of flooding: Frequent
Frequency of ponding: None
Available water supply, 0 to 60 inches: High (about 10.7 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 4w
Hydrologic Soil Group: B/D
Ecological site: F136XY110VA-Mesic temperature regime, flood plain forest, wet
Hydric soil rating: No
14

Custom Soil Resource Report
Minor Components
Hatboro, undrained
Percent of map unit: 5 percent
Landform: Depressions on flood plains
Landform position (three-dimensional): Tread
Down-slope shape: Concave
Across-slope shape: Linear
Hydric soil rating: Yes
Pfafftown
Percent of map unit: 2 percent
Landform: Stream terraces
Landform position (three-dimensional):Tread
Down-slope shape: Convex
Across-slope shape: Linear
Hydric soil rating: No
Ronda
Percent of map unit: 2 percent
Landform: Natural levees on flood plains
Landform position (three-dimensional): Tread
Down-slope shape: Convex
Across-slope shape: Convex
Hydric soil rating: No
Banister
Percent of map unit: 2 percent
Landform: Flats on stream terraces
Landform position (three-dimensional): Tread
Down-slope shape: Concave
Across-slope shape: Linear
Hydric soil rating: No
Comus
Percent of map unit: 2 percent
Landform: Flood plains
Landform position (three-dimensional): Tread
Down-slope shape: Convex
Across-slope shape: Linear •
Hydric soil rating: No
Dan river
Percent of map unit: 2 percent
Landform: Flood plains
Landform position (three-dimensional): Tread
Down-slope shape: Convex
Across-slope shape: Linear
Hydric soil rating: No
15

Custom Soil Resource Report
FcD2—Fairview clay loam, 10 to 15 percent slopes, moderately eroded
Map Unit Setting
National map unit symbol: 2mpkg
Elevation: 200 to 2,000 feet
Mean annual precipitation: 40 to 48 inches
Mean annual air temperature: 50 to 59 degrees F
Frost-free period: 160 to 200 days
Farmland classification: Farmland of statewide importance
Map Unit Composition
Fairview, moderately eroded, and similar soils: 78 percent
Minor components: 5 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Fairview, Moderately Eroded
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 schist and/or gneiss
Typical profile
Ap-0 to 9 inches: sandy clay loam
Bt-9 to 24 inches: clay
BC-24 to 29 inches: clay loam
C-29 to 80 inches: loam
Properties and qualities
Slope: 10 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 7.5 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 3e
Hydrologic Soil Group: C
Ecological site: F136XY320VA- Mesic temperature regime, acidic upland forest,
moist
Hydric soil rating: No
16

Custom Soil Resource Report
Minor Components
Westfield, moderately eroded
Percent of map unit: 4 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
Woolwine, moderately eroded
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
Gu—Gullied land
Map Unit Composition
Gullied land: 100 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Gullied Land
Setting
Parent material: Residuum weathered from mica schist and/or other micaceous
metamorphic rock
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 8e
Hydric soil rating: No
HaA—Hatboro loam, 0 to 2 percent slopes, frequently flooded
Map Unit Setting
National map unit symbol: 2mpkw
Elevation: 200 to 1,400 feet
Mean annual precipitation: 40 to 48 inches
Mean annual air temperature: 50 to 59 degrees F
Frost-free period: 160 to 190 days
Farmland classification: Not prime farmland
17

Custom Soil Resource Report
Map Unit Composition
Hatboro, undrained, and similar soils: 85 percent
Hatboro, drained, and similar soils: 10 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Hatboro, Undrained
Setting
Landform: Depressions on flood plains
Down-slope shape: Concave
Across-slope shape: Linear
Parent material: Loamy alluvium derived from igneous and metamorphic rock
Typical profile
A -0 to 8 inches: loam
Bg- 8 to 43 inches: sandy clay loam
Cg-43 to 80 inches: sandy loam
Properties and qualities
Slope: 0 to 2 percent
Depth to restrictive feature: More than 80 inches
Drainage class: Poorly drained
Runoff class: Very high
Capacity of the most limiting layer to transmit water(Ksat): Moderately high to high
(0.57 to 1.98 in/hr)
Depth to water table:About 0 to 12 inches
Frequency of flooding: Frequent
Frequency of ponding: None
Available water supply, 0 to 60 inches: High (about 9.9 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 6w
Hydrologic Soil Group: B/D
Ecological site: F136XY100VA- Mesic temperature regime, flood plain forest,
very wet
Hydric soil rating: Yes
Description of Hatboro, Drained
Setting
Landform: Depressions on flood plains
Down-slope shape: Concave
Across-slope shape: Linear
Parent material: Loamy alluvium derived from igneous and metamorphic rock
Typical profile
Ap-0 to 8 inches: loam
Bg- 8 to 43 inches: sandy clay loam
Cg-43 to 80 inches: sandy loam
Properties and qualities
Slope: 0 to 2 percent
Depth to restrictive feature: More than 80 inches
Drainage class: Poorly drained
Runoff class: Very high
18

Custom Soil Resource Report
Capacity of the most limiting layer to transmit water(Ksat): Moderately high to high
(0.57 to 1.98 in/hr)
Depth to water table:About 0 to 12 inches
Frequency of flooding: Frequent
Frequency of ponding: None
Available water supply, 0 to 60 inches: High (about 9.9 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 4w
Hydrologic Soil Group: B/D
Ecological site: F136XY100VA- Mesic temperature regime, flood plain forest,
very wet
Hydric soil rating: Yes
SmC—Siloam sandy loam, 4 to 10 percent slopes
Map Unit Setting
National map unit symbol: 2mp11
Elevation: 200 to 1,400 feet
Mean annual precipitation: 40 to 48 inches
Mean annual air temperature: 50 to 59 degrees F
Frost-free period: 160 to 200 days
Farmland classification: Not prime farmland
Map Unit Composition
Siloam and similar soils: 85 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Siloam
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 diorite and/or gabbro and/or diabase
and/or gneiss
Typical profile
A - 0 to 7 inches: sandy loam
Bt- 7 to 15 inches: sandy clay loam
Cr- 15 to 80 inches: weathered bedrock
Properties and qualities
Slope:4 to 10 percent
Depth to restrictive feature: 10 to 20 inches to paralithic bedrock
Drainage class: Well drained
Runoff class: Medium
19

Custom Soil Resource Report
Capacity of the most limiting layer to transmit water(Ksat):Very low to moderately
high (0.00 to 0.57 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 2.3 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 4e
Hydrologic Soil Group: D
Ecological site: F136XY230VA- Mesic temperature regime, basic upland forest,
depth restriction, dry
Hydric soil rating: No
SmD—Siloam sandy loam, 10 to 15 percent slopes
Map Unit Setting
National map unit symbol: 2mp12
Elevation: 200 to 1,400 feet
Mean annual precipitation: 40 to 48 inches
Mean annual air temperature: 50 to 59 degrees F
Frost-free period: 160 to 200 days
Farmland classification: Not prime farmland
Map Unit Composition
Siloam and similar soils: 90 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Siloam
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 diorite and/or gabbro and/or diabase
and/or gneiss
Typical profile
A - 0 to 7 inches: sandy loam
Bt- 7 to 15 inches: sandy clay loam
Cr- 15 to 80 inches: weathered bedrock
Properties and qualities
Slope: 10 to 15 percent
Depth to restrictive feature: 10 to 20 inches to paralithic bedrock
Drainage class:Well drained
Runoff class: High
Capacity of the most limiting layer to transmit water(Ksat):Very low to moderately
high (0.00 to 0.57 in/hr)
20

Custom Soil Resource Report
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 2.3 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 6e
Hydrologic Soil Group: D
Ecological site: F136XY230VA- Mesic temperature regime, basic upland forest,
depth restriction, dry
Hydric soil rating: No
SmF—Siloam sandy loam, 15 to 45 percent slopes
Map Unit Setting
National map unit symbol: 2mp13
Elevation: 200 to 1,400 feet
Mean annual precipitation: 40 to 48 inches
Mean annual air temperature: 50 to 59 degrees F
Frost-free period: 160 to 200 days
Farmland classification: Not prime farmland
Map Unit Composition
Siloam and similar soils: 90 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Siloam
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 diorite and/or gabbro and/or diabase
and/or gneiss
Typical profile
A - 0 to 7 inches: sandy loam
Bt- 7 to 15 inches: sandy clay loam
Cr- 15 to 80 inches: weathered bedrock
Properties and qualities
Slope: 10 to 45 percent
Depth to restrictive feature: 10 to 20 inches to paralithic bedrock
Drainage class:Well drained
Runoff class: High
Capacity of the most limiting layer to transmit water(Ksat):Very low to moderately
high (0.00 to 0.57 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
21

Custom Soil Resource Report
Frequency of ponding: None
Available water supply, 0 to 60 inches: Very low(about 2.3 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 6e
Hydrologic Soil Group: D
Ecological site: F136XY230VA- Mesic temperature regime, basic upland forest,
depth restriction, dry
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
WmC—Wickham fine sandy loam, mesic, 6 to 10 percent slopes
Map Unit Setting
National map unit symbol: 2mpsd
Elevation: 200 to 1,400 feet
Mean annual precipitation: 37 to 60 inches
Mean annual air temperature: 59 to 66 degrees F
Frost-free period: 200 to 240 days
Farmland classification: Farmland of statewide importance
Map Unit Composition
Wickham and similar soils: 85 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Wickham
Setting
Landform: Stream terraces
Down-slope shape: Convex
Across-slope shape: Linear
Parent material: Old loamy alluvium derived from igneous and metamorphic rock
Typical profile
Ap- 0 to 8 inches: fine sandy loam
Bt- 8 to 42 inches: sandy clay loam
22

Custom Soil Resource Report
BC-42 to 50 inches: sandy clay loam
C-50 to 80 inches: sandy loam
Properties and qualities
Slope: 6 to 10 percent
Depth to restrictive feature: More than 80 inches
Drainage class:Well drained
Runoff class: Medium
Capacity of the most limiting layer to transmit water(Ksat): Moderately high to high
(0.57 to 1.98 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Available water supply, 0 to 60 inches: Moderate (about 8.4 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 3e
Hydrologic Soil Group: B
Ecological site: F136XY320VA- Mesic temperature regime, acidic upland forest,
moist
Hydric soil rating: No
23

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.nrcs.usda.gov/wps/portal/
nres/detail/national/soils/?cid=nres142p2_054262
Soil Survey Staff. 1999. Soil taxonomy: A basic system of soil classification for
making and interpreting soil surveys. 2nd edition. Natural Resources Conservation
Service, U.S. Department of Agriculture Handbook 436. http://
www.nres.usda.gov/wps/portal/nres/detail/national/soils/?cid=nres142p2_053577
Soil Survey Staff. 2010. Keys to soil taxonomy. 11th edition. U.S. Department of
Agriculture, Natural Resources Conservation Service. http://
www.nres.usda.gov/wps/portal/nres/detail/national/soils/?cid=nres142p2_053580
Tiner, R.W., Jr. 1985. Wetlands of Delaware. U.S. Fish and Wildlife Service and
Delaware Department of Natural Resources and Environmental Control, Wetlands
Section.
United States Army Corps of Engineers, Environmental Laboratory. 1987. Corps of
Engineers wetlands delineation manual. Waterways Experiment Station Technical
Report Y-87-1.
United States Department of Agriculture, Natural Resources Conservation Service.
National forestry manual. http://www.nres.usda.gov/wps/portal/nres/detail/soils/
home/?cid=nres142p2_053374
United States Department of Agriculture, Natural Resources Conservation Service.
National range and pasture handbook. http://www.nres.usda.gov/wps/portal/nres/
detail/national/landuse/rangepasture/?cid=stelprdb1043084
24

Custom Soil Resource Report
United States Department of Agriculture, Natural Resources Conservation Service.
National soil survey handbook, title 430-VI. http://www.nrcs.usda.gov/wps/portal/
nres/detail/soils/scientists/?cid=nres 142 p2_054242
United States Department of Agriculture, Natural Resources Conservation Service.
2006. Land resource regions and major land resource areas of the United States,
the Caribbean, and the Pacific Basin. U.S. Department of Agriculture Handbook
296. http://www.nres.usda.gov/wps/portal/nres/detail/national/soils/?
cid=nres 142 p2_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/Internet/FSE_DOCUMENTS/nrcs142p2_052290.pdf
25

SWALE LINER SPECIFICATION

1 / ROLLMA01TM
ROLLED EROSION CONTROL
Specification Sheet - EroNetTM SC150® Erosion Control Blanket
DESCRIPTION Index Property Test Method Typical
The extended-term double net erosion control blanket shall be a 0.35 in.
Thickness ASTM 06525
machine-produced mat of 70%agricultural straw and 30%coconut (8.89 mm)
fiber with a functional longevity of up to 24 months.(NOTE:functional Resiliency ECTC Guidelines 75%
longevity may vary depending upon climatic conditions,soil,geograph- Water Absorbency ASTM D1117 342%
ical location,and elevation).The blanket shall be of consistent Mass/Unit Area ASTM D6475 7.87 oz/sy
thickness with the straw and coconut evenly distributed over the (267.6 g/sm)
entire area of the mat.The blanket shall be covered on the top side Swell ECTC Guidelines 30%
with a heavyweight photodegradable polypropylene netting having Smolder Resistance ECTC Guidelines Yes
ultraviolet additives to delay breakdown and an approximate 0.63 x Stiffness ASTM D1388 1.11 oz-in
0.63 in(1.59 x 1.59 cm)mesh,and on the bottom side with a light- Light Penetration ASTM D6567 6.2%
weight photodegradable polypropylene netting with an approximate 362.4 lbs/ft
0.50 x 0.50(1.27 x 1.27 cm)mesh.The blanket shall be sewn together Tensile Strength-MD ASTM D6818 (5.37 kN/m)
on 1.50 inch(3.81 cm)centers with degradable thread.The blanket shall Elongation- MD ASTM D6818 29.4%
be manufactured with a colored thread stitched along both outer 136.8 lbs/ft
edges(approximately 2-5 inches[5-12.5 cm]from the edge)as an Tensile Strength-TO ASTM D6818 (2.03 kN/m)
overlap guide for adjacent mats. Elongation-TD ASTM D6818 27.6%
The SC150 shall meet Type 3.B specification requirements established Biomass Improvement ASTM D7322 481%
by the Erosion Control Technology Council (ECTC)and Federal Highway
Administration's(FHWA) FP-03 Section 713.17 Design Permissible Shear Stress
Unvegetated Shear Stress 2.00 psf(96 Pa)
Material Content
Unvegetated Velocity 8.0 fps(2.44 m/s)
70%Straw Fiber 0.35 lbs/sq yd(0.19 kg/sm)
Matrix
30%Coconut Fiber 0.15 lbs/sq yd(0.08 kg/sm) i
Slope Design Data:C Factors
Top:Heavyweight 3 Ibs/1000 sq ft(1.47 kg/100 sm)
photodegradable Slope Gradients(5)
Netting with UV additives
Slope Length(L) <_3:1 3:1-2:1 a 2:1
Bottom:lighweight 1.5 lb/1000 sq ft(0.73 kg/100 sm)
photodegradable 5.20 ft(6 m) 0.001 0.048 0.100
Thread Degradable
20-50 ft 0.051 0.079 0.145
a 50 ft(15.2 m) 0.10 0.110 0.190
Standard Roll Sizes
NTPEP Large-Scale Slope
Width 6.67 ft(2.03 m) 8 ft(2.4 m) 16.0 ft(4.87 m) ASTM 06459-[-factor=0.031
Length 108 ft(32.92 m) 112 ft(34.14 m) 108 ft(32.92 m)
Roughness Coefficients-Unveg.
Weight±10% 44 lbs(19.95 kg) 55 lbs(24.95 kg) 105.6 lbs(47.9 kg) Flow Depth Manning's n
Area 80 sq yd(66.9 sm) 100 sq yd(83.61 sm) 192 sq yd(165.6 sm) 0.50 ft(0.15 m) 0.050
0.50-2.0 ft 0.050-0.018
a 2.0 ft(0.60 m) 0.018
02017.North American Green is a registered trademark.Certain products and/or applications
NORTH El
North American Green described or illustrated herein are protected under one or more U.S.patents.Other U.S,
5401 St.Wendel-Cynthiana Road patents are pending,and certain foreign patents and patent applications may also exist.
AMERI CAN Poseyville,Indiana 47633 Trademark rights also apply as indicated herein.Final determination of the suitability of any
information or material for the use contemplated,d,and its manner of use,is the sole
responsibility of the user.Printed in the U.S.A.
GREEN nagreen.com
800 772 2040 EC_RMX_MPDS_ESC150_6.13