HomeMy WebLinkAbout20140531.tiff Keota-Redtail 115-kV Transmission Line Project
Weld County USR and 1041 Application
Appendix C :
NRCS Soils Report
USDA United States A product of the National Custom Soil Resource
ral Department of Cooperative Soil Survey,
Agriculture a joint effort of the United Report for
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States Department of
\ RCS Agriculture and other VVe I d C o u n ty ,
Federal agencies, State
Natural agencies including the Colorado , I� orthern
Resources Agricultural Experiment
Conservation Stations, and local
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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://soils. usda .gov/sqi/) and certain
conservation and engineering applications. For more detailed information, contact
your local USDA Service Center (http://offices.sc.egov.usda .gov/locator/app?
agency=nrcs) or your NRCS State Soil Scientist (http://soils.usda.gov/contact/
state offices/).
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 Soil Data Mart Web site or the NRCS Web Soil Survey. The Soil
Data Mart is the data storage site for the 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 alternative means
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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 (800) 795-3272
(voice) or (202) 720-6382 (TDD). USDA is an equal opportunity provider and
employer.
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Contents
Preface 2
How Soil Surveys Are Made 5
Soil Map 7
Soil Map 8
Legend 9
Map Unit Legend 10
Map Unit Descriptions 10
Weld County, Colorado, Northern Part 12
17—Bushman fine sandy loam, 0 to 3 percent slopes 12
18—Bushman fine sandy loam, 3 to 9 percent slopes 13
27—Epping silt loam, 0 to 9 percent slopes 14
31—Kim-Mitchell complex, 0 to 6 percent slopes 15
Soil Information for All Uses 17
Suitabilities and Limitations for Use 17
Building Site Development 17
Dwellings Without Basements 17
Small Commercial Buildings 21
Land Classifications 25
Farmland Classification 26
Soil Properties and Qualities 31
Soil Physical Properties 31
Linear Extensibility 31
References 35
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
scientists classified and named the soils in the survey area, they compared the
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Custom Soil Resource Report
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
identified each as a specific map unit. Aerial photographs show trees, buildings, fields,
roads, and rivers, all of which help in locating boundaries accurately.
6
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.
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Custom Soil Resource Report
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Custom Soil Resource Report
MAP LEGEND MAP INFORMATION
Area of Interest (AOl) -# Spoil Area The soil surveys that comprise your AOI were mapped at 1 :24,000.
Area of Interest (AOl) Stony Spot
,:
Soils r, Very Stony Spot Warning: Soil Map may not be valid at this scale.
Soil Map Unit Polygons
Wet Spot Enlargement of maps beyond the scale of mapping can cause
��. Soil Map Unit Lines misunderstanding of the detail of mapping and accuracy of soil line
Other
Soil Map Unit Points placement. The maps do not show the small areas of contrasting
Special Line Features soils that could have been shown at a more detailed scale.
Special Point Features
V Blowout Water Features
Streams and Canals Please rely on the bar scale on each map sheet for map
C4 Borrow Pit measurements.
Transportation
X Clay Spot
Rails Source of Map: Natural Resources Conservation Service
Closed Depression ti Interstate Highways Web Soil Survey URL: http://websoilsurvey.nrcs.usda.gov
X Gravel Pit US Routes Coordinate System: Web Mercator (EPSG:3857)
• Gravelly Spot Major Roads Maps from the Web Soil Survey are based on the Web Mercator
Landfill Local Roads projection, which preserves direction and shape but distorts
distance and area. A projection that preserves area, such as the
Lava Flow Background Albers equal-area conic projection, should be used if more accurate
4k, Marsh or swamp Aerial Photography calculations of distance or area are required.
ft Mine or Quarry This product is generated from the USDA-NRCS certified data as of
® Miscellaneous Water the version date(s) listed below.
O Perennial Water
Soil Survey Area: Weld County, Colorado, Northern Part
v Rock Outcrop Survey Area Data: Version 8, Apr 30, 2009
+ Saline Spot
Soil map units are labeled (as space allows) for map scales 1 :50,000
••• Sandy Spot or larger.
• •
o Severely Eroded Spot
Date(s) aerial images were photographed: Sep 30, 2010—Oct 19,
® Sinkhole 2011
Slide or Slip
The orthophoto or other base map on which the soil lines were
0o Sodic Spot 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.
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Custom Soil Resource Report
Map Unit Legend
Weld County, Colorado, Northern Part (CO617)
Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI
17 Bushman fine sandy loam, 0 to 3 15.6 73.8%
percent slopes
18 Bushman fine sandy loam, 3 to 9 2.5 11 .9%
percent slopes
27 Epping silt loam, 0 to 9 percent 0.2 1 . 1 %
slopes
31 Kim-Mitchell complex, 0 to 6 2.8 13.2%
percent slopes
Totals for Area of Interest 21 .2 100.0%
Map Unit Descriptions
The map units delineated on the detailed soil maps in a soil survey represent the soils
or miscellaneous areas in the survey area. The map unit descriptions, along with the
maps, can be used to determine the composition and properties of a unit.
A map unit delineation on a soil map represents an area dominated by one or more
major kinds of soil or miscellaneous areas. A map unit is identified and named
according to the taxonomic classification of the dominant soils. Within a taxonomic
class there are precisely defined limits for the properties of the soils. On the landscape,
however, the soils are natural phenomena, and they have the characteristic variability
of all natural phenomena. Thus, the range of some observed properties may extend
beyond the limits defined for a taxonomic class. Areas of soils of a single taxonomic
class rarely, if ever, can be mapped without including areas of other taxonomic
classes. Consequently, every map unit is made up of the soils or miscellaneous areas
for which it is named and some minor components that belong to taxonomic classes
other than those of the major soils.
Most minor soils have properties similar to those of the dominant soil or soils in the
map unit, and thus they do not affect use and management. These are called
noncontrasting , or similar, components. They may or may not be mentioned in a
particular map unit description. Other minor components, however, have properties
and behavioral characteristics divergent enough to affect use or to require different
management. These are called contrasting , or dissimilar, components. They generally
are in small areas and could not be mapped separately because of the scale used .
Some small areas of strongly contrasting soils or miscellaneous areas are identified
by a special symbol on the maps. If included in the database for a given area, the
contrasting minor components are identified in the map unit descriptions along with
some characteristics of each. A few areas of minor components may not have been
observed, and consequently they are not mentioned in the descriptions, especially
where the pattern was so complex that it was impractical to make enough observations
to identify all the soils and miscellaneous areas on the landscape.
The presence of minor components in a map unit in no way diminishes the usefulness
or accuracy of the data. The objective of mapping is not to delineate pure taxonomic
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Custom Soil Resource Report
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.
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Custom Soil Resource Report
Weld County, Colorado, Northern Part
17—Bushman fine sandy loam , 0 to 3 percent slopes
Map Unit Setting
Elevation: 5,000 to 6,000 feet
Mean annual precipitation: 11 to 15 inches
Mean annual air temperature: 45 to 46 degrees F
Frost-free period: 130 to 160 days
Map Unit Composition
Bushman and similar soils: 90 percent
Minor components: 10 percent
Description of Bushman
Setting
Landform: Alluvial fans
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Calcareous loamy alluvium
Properties and qualities
Slope: 0 to 3 percent
Depth to restrictive feature: More than 80 inches
Drainage class: Well drained
Capacity of the most limiting layer to transmit water (Ksat): High (2.00 to 6.00 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Calcium carbonate, maximum content: 15 percent
Maximum salinity: Nonsaline to very slightly saline (0.0 to 4.0 mmhos/cm)
Available water capacity: Moderate (about 8.4 inches)
Interpretive groups
Farmland classification: Farmland of statewide importance
Land capability classification (irrigated): 2e
Land capability (nonirrigated): 4e
Hydrologic Soil Group: B
Ecological site: Sandy Plains (R067BY024CO)
Typical profile
0 to 10 inches: Fine sandy loam
10 to 60 inches: Sandy loam
Minor Components
Wages
Percent of map unit: 10 percent
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Custom Soil Resource Report
18—Bushman fine sandy loam, 3 to 9 percent slopes
Map Unit Setting
Elevation: 5,000 to 6,000 feet
Mean annual precipitation: 11 to 15 inches
Mean annual air temperature: 45 to 46 degrees F
Frost-free period: 130 to 160 days
Map Unit Composition
Bushman and similar soils: 90 percent
Minor components: 10 percent
Description of Bushman
Setting
Landform: Fans, alluvial fans
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Calcareous loamy alluvium and/or colluvium
Properties and qualities
Slope: 3 to 9 percent
Depth to restrictive feature: More than 80 inches
Drainage class: Well drained
Capacity of the most limiting layer to transmit water (Ksat): High (2.00 to 6.00 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Calcium carbonate, maximum content 15 percent
Maximum salinity: Nonsaline to very slightly saline (0.0 to 4.0 mmhos/cm)
Available water capacity: Moderate (about 8.4 inches)
Interpretive groups
Farmland classification: Not prime farmland
Land capability classification (irrigated): 4e
Land capability (nonirrigated): 6e
Hydrologic Soil Group: B
Ecological site: Sandy Plains (R067BY024CO)
Typical profile
0 to 6 inches: Fine sandy loam
6 to 60 inches: Sandy loam
Minor Components
Wages
Percent of map unit 6 percent
Cushman
Percent of map unit 4 percent
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Custom Soil Resource Report
27—Epping silt loam , 0 to 9 percent slopes
Map Unit Setting
Elevation: 3,600 to 5,500 feet
Mean annual precipitation: 12 to 17 inches
Mean annual air temperature: 45 to 52 degrees F
Frost-free period: 120 to 150 days
Map Unit Composition
Epping and similar soils: 85 percent
Minor components: 15 percent
Description of Epping
Setting
Landform: Plains
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Calcareous loamy residuum weathered from siltstone
Properties and qualities
Slope: 0 to 9 percent
Depth to restrictive feature: 10 to 20 inches to paralithic bedrock
Drainage class: Well drained
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
Calcium carbonate, maximum content: 15 percent
Available water capacity: Very low (about 2.9 inches)
Interpretive groups
Farmland classification: Not prime farmland
Land capability (nonirrigated): 6s
Hydrologic Soil Group: D
Ecological site: Shallow Siltstone (R067BY039CO)
Typical profile
0 to 3 inches: Silt loam
3 to 17 inches: Silt loam
17 to 20 inches: Weathered bedrock
Minor Components
Keota
Percent of map unit: 5 percent
Thedalund
Percent of map unit 4 percent
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Custom Soil Resource Report
Mitchell
Percent of map unit 3 percent
Kim
Percent of map unit: 3 percent
31 —Kim-Mitchell complex, 0 to 6 percent slopes
Map Unit Setting
Elevation: 3,500 to 6,500 feet
Mean annual precipitation: 11 to 17 inches
Mean annual air temperature: 46 to 54 degrees F
Frost-free period: 120 to 160 days
Map Unit Composition
Kim and similar soils: 45 percent
Mitchell and similar soils: 40 percent
Minor components: 15 percent
Description of Kim
Setting
Landform: Plains, alluvial fans
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Calcareous loamy alluvium
Properties and qualities
Slope: 0 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 (0.20 to
0.60 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Calcium carbonate, maximum content: 15 percent
Maximum salinity: Nonsaline to very slightly saline (0.0 to 4.0 mmhos/cm)
Available water capacity: High (about 9.7 inches)
Interpretive groups
Farmland classification: Farmland of statewide importance
Land capability classification (irrigated): 4e
Land capability (nonirrigated): 4e
Hydrologic Soil Group: B
Ecological site: Loamy Plains (R067BY002CO)
Typical profile
0 to 3 inches: Loam
3 to 7 inches: Clay loam
7 to 60 inches: Loam
15
Custom Soil Resource Report
Description of Mitchell
Setting
Landform: Alluvial fans, plains
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Calcareous loamy alluvium
Properties and qualities
Slope: 0 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 5.95 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Calcium carbonate, maximum content: 15 percent
Available water capacity: High (about 10.8 inches)
Interpretive groups
Farmland classification: Farmland of statewide importance
Land capability classification (irrigated): 4e
Land capability (nonirrigated): 4e
Hydrologic Soil Group: B
Ecological site: Siltstone Plains (R067BY009CO)
Typical profile
0 to 7 inches: Silt loam
7 to 60 inches: Silt loam
Minor Components
Haverson
Percent of map unit: 5 percent
Thedalund
Percent of map unit 5 percent
Keota
Percent of map unit 5 percent
16
Soil Information for All Uses
Suitabilities and Limitations for Use
The Suitabilities and Limitations for Use section includes various soil interpretations
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 interpretation.
Building Site Development
Building site development interpretations are designed to be used as tools for
evaluating soil suitability and identifying soil limitations for various construction
purposes. As part of the interpretation process, the rating applies to each soil in its
described condition and does not consider present land use. Example interpretations
can include corrosion of concrete and steel, shallow excavations, dwellings with and
without basements, small commercial buildings, local roads and streets, and lawns
and landscaping.
Dwellings Without Basements
Dwellings are single-family houses of three stories or less. For dwellings without
basements, the foundation is assumed to consist of spread footings of reinforced
concrete built on undisturbed soil at a depth of 2 feet or at the depth of maximum frost
penetration, whichever is deeper.
The ratings for dwellings are based on the soil properties that affect the capacity of
the soil to support a load without movement and on the properties that affect
excavation and construction costs. The properties that affect the load-supporting
capacity include depth to a water table, ponding, flooding, subsidence, linear
extensibility (shrink-swell potential), and compressibility. Compressibility is inferred
from the Unified classification of the soil. The properties that affect the ease and
amount of excavation include depth to a water table, ponding, flooding, slope, depth
to bedrock or a cemented pan, hardness of bedrock or a cemented pan, and the
amount and size of rock fragments.
The ratings are both verbal and numerical . Rating class terms indicate the extent to
which the soils are limited by all of the soil features that affect the specified use. "Not
17
Custom Soil Resource Report
limited" indicates that the soil has features that are very favorable for the specified
use. Good performance and very low maintenance can be expected . "Somewhat
limited" indicates that the soil has features that are moderately favorable for the
specified use. The limitations can be overcome or minimized by special planning,
design, or installation . Fair performance and moderate maintenance can be expected.
"Very limited" indicates that the soil has one or more features that are unfavorable for
the specified use. The limitations generally cannot be overcome without major soil
reclamation, special design, or expensive installation procedures. Poor performance
and high maintenance can be expected.
Numerical ratings indicate the severity of individual limitations. The ratings are shown
as decimal fractions ranging from 0.01 to 1 .00. They indicate gradations between the
point at which a soil feature has the greatest negative impact on the use ( 1 .00) and
the point at which the soil feature is not a limitation (0.00).
The map unit components listed for each map unit in the accompanying Summary by
Map Unit table in Web Soil Survey or the Aggregation Report in Soil Data Viewer are
determined by the aggregation method chosen . An aggregated rating class is shown
for each map unit. The components listed for each map unit are only those that have
the same rating class as listed for the map unit. The percent composition of each
component in a particular map unit is presented to help the user better understand the
percentage of each map unit that has the rating presented.
Other components with different ratings may be present in each map unit. The ratings
for all components, regardless of the map unit aggregated rating, can be viewed by
generating the equivalent report from the Soil Reports tab in Web Soil Survey or from
the Soil Data Mart site. Onsite investigation may be needed to validate these
interpretations and to confirm the identity of the soil on a given site.
18
Custom Soil Resource Report
M Map—Dwellings Without Basements
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Map Scale: 1:2,430 if printed on A landscape (11" x 8.5") sheet.
o N Meters R,
0 35 70 140 210
AFeet
0 100 200 400 600
Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 13N WG584
19
Custom Soil Resource Report
MAP LEGEND MAP INFORMATION
Area of Interest (AOl) Background The soil surveys that comprise your AOI were mapped at 1 :24,000.
Area of Interest (AOI) Aerial Photography
Soils Warning: Soil Map may not be valid at this scale.
Soil Rating Polygons
al Very limited Enlargement of maps beyond the scale of mapping can cause
misunderstanding of the detail of mapping and accuracy of soil line
Somewhat limited placement. The maps do not show the small areas of contrasting
Not limited soils that could have been shown at a more detailed scale.
Not rated or not available
Please rely on the bar scale on each map sheet for map
Soil Rating Lines measurements.
Very limited
• • Somewhat limited Source of Map: Natural Resources Conservation Service
Web Soil Survey URL: http://websoilsurvey.nrcs.usda.gov
\.. Not limited Coordinate System: Web Mercator (EPSG:3857)
• • Not rated or not available
Maps from the Web Soil Survey are based on the Web Mercator
Soil Rating Points projection, which preserves direction and shape but distorts
Very limited distance and area. A projection that preserves area, such as the
CI Somewhat limited Albers equal-area conic projection, should be used if more accurate
calculations of distance or area are required.
O Not limited
Not rated or not available This product is generated from the USDA-NRCS certified data as of
the version date(s) listed below.
Water Features
Streams and Canals Soil Survey Area: Weld County, Colorado, Northern Part
Transportation Survey Area Data: Version 8, Apr 30, 2009
III Rails
Soil map units are labeled (as space allows) for map scales 1 :50,000
,rteo Interstate Highways or larger.
US Routes
Date(s) aerial images were photographed: Sep 30, 2010—Oct 19,
Major Roads 2011
Local Roads
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.
20
Custom Soil Resource Report
Tables—Dwellings Without Basements
Dwellings Without Basements— Summary by Map Unit — Weld County, Colorado, Northern Part (CO617)
Map unit symbol Map unit name Rating Component Rating reasons Acres in AOI Percent of AOI
name (percent) (numeric values)
17 Bushman fine Not limited Bushman (90%) 15.6 73.8%
sandy loam, 0
to 3 percent
slopes
18 Bushman fine Not limited Bushman (90%) 2.5 11 .9%
sandy loam, 3
to 9 percent
slopes
27 Epping silt loam, Somewhat limited Epping (85%) Depth to soft 0.2 1 . 1 %
0 to 9 percent bedrock (0.50)
slopes
31 Kim-Mitchell Not limited Kim (45%) 2.8 13.2%
complex, 0 to 6
percent slopes Mitchell (40%)
Totals for Area of Interest 21 .2 100.0%
Dwellings Without Basements— Summary by Rating Value
Rating Acres in AOI Percent of AOI
Not limited 21 .0 98.9%
Somewhat limited 0.2 1 .1%
Totals for Area of Interest 21 .2 100.0%
Rating Options—Dwellings Without Basements
Aggregation Method: Dominant Condition
Component Percent Cutoff.' None Specified
Tie-break Rule: Higher
Small Commercial Buildings
Small commercial buildings are structures that are less than three stories high and do
not have basements. The foundation is assumed to consist of spread footings of
reinforced concrete built on undisturbed soil at a depth of 2 feet or at the depth of
maximum frost penetration , whichever is deeper. The ratings are based on the soil
properties that affect the capacity of the soil to support a load without movement and
on the properties that affect excavation and construction costs. The properties that
affect the load-supporting capacity include depth to a water table, ponding, flooding ,
subsidence, linear extensibility (shrink-swell potential), and compressibility (which is
inferred from the Unified classification of the soil). The properties that affect the ease
and amount of excavation include flooding, depth to a water table, ponding , slope,
depth to bedrock or a cemented pan, hardness of bedrock or a cemented pan , and
the amount and size of rock fragments.
21
Custom Soil Resource Report
The ratings are both verbal and numerical . Rating class terms indicate the extent to
which the soils are limited by all of the soil features that affect the specified use. "Not
limited" indicates that the soil has features that are very favorable for the specified
use. Good performance and very low maintenance can be expected. "Somewhat
limited" indicates that the soil has features that are moderately favorable for the
specified use. The limitations can be overcome or minimized by special planning,
design, or installation . Fair performance and moderate maintenance can be expected .
"Very limited" indicates that the soil has one or more features that are unfavorable for
the specified use. The limitations generally cannot be overcome without major soil
reclamation, special design, or expensive installation procedures. Poor performance
and high maintenance can be expected.
Numerical ratings indicate the severity of individual limitations. The ratings are shown
as decimal fractions ranging from 0.01 to 1 .00. They indicate gradations between the
point at which a soil feature has the greatest negative impact on the use ( 1 .00) and
the point at which the soil feature is not a limitation (0.00).
The map unit components listed for each map unit in the accompanying Summary by
Map Unit table in Web Soil Survey or the Aggregation Report in Soil Data Viewer are
determined by the aggregation method chosen . An aggregated rating class is shown
for each map unit. The components listed for each map unit are only those that have
the same rating class as listed for the map unit. The percent composition of each
component in a particular map unit is presented to help the user better understand the
percentage of each map unit that has the rating presented.
Other components with different ratings may be present in each map unit. The ratings
for all components, regardless of the map unit aggregated rating, can be viewed by
generating the equivalent report from the Soil Reports tab in Web Soil Survey or from
the Soil Data Mart site. Onsite investigation may be needed to validate these
interpretations and to confirm the identity of the soil on a given site.
22
Custom Soil Resource Report
M Map—Small Commercial Buildings
Ln
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fin
3 3
Map Scale: 1:2,430 if printed on A landscape (11" x 8.5") sheet.
o N MetersRI
0 35 70 140 210
AFeet
0 100 200 400 600
Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 13N WG584
23
Custom Soil Resource Report
MAP LEGEND MAP INFORMATION
Area of Interest (AOl) Background The soil surveys that comprise your AOI were mapped at 1 :24,000.
Area of Interest (AOI) Aerial Photography
Soils Warning: Soil Map may not be valid at this scale.
Soil Rating Polygons
al Very limited Enlargement of maps beyond the scale of mapping can cause
misunderstanding of the detail of mapping and accuracy of soil line
Somewhat limited placement. The maps do not show the small areas of contrasting
Not limited soils that could have been shown at a more detailed scale.
Not rated or not available
Please rely on the bar scale on each map sheet for map
Soil Rating Lines measurements.
Very limited
• • Somewhat limited Source of Map: Natural Resources Conservation Service
Web Soil Survey URL: http://websoilsurvey.nrcs.usda.gov
\.. Not limited Coordinate System: Web Mercator (EPSG:3857)
• • Not rated or not available
Maps from the Web Soil Survey are based on the Web Mercator
Soil Rating Points projection, which preserves direction and shape but distorts
Very limited distance and area. A projection that preserves area, such as the
CI Somewhat limited Albers equal-area conic projection, should be used if more accurate
calculations of distance or area are required.
O Not limited
Not rated or not available This product is generated from the USDA-NRCS certified data as of
the version date(s) listed below.
Water Features
Streams and Canals Soil Survey Area: Weld County, Colorado, Northern Part
Transportation Survey Area Data: Version 8, Apr 30, 2009
III Rails
Soil map units are labeled (as space allows) for map scales 1 :50,000
,rteo Interstate Highways or larger.
US Routes
Date(s) aerial images were photographed: Sep 30, 2010—Oct 19,
Major Roads 2011
Local Roads
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.
24
Custom Soil Resource Report
Tables—Small Commercial Buildings
Small Commercial Buildings— Summary by Map Unit — Weld County, Colorado, Northern Part (CO617)
Map unit symbol Map unit name Rating Component Rating reasons Acres in AOI Percent of AOI
name (percent) (numeric values)
17 Bushman fine Not limited Bushman (90%) 15.6 73.8%
sandy loam, 0
to 3 percent
slopes
18 Bushman fine Somewhat limited Bushman (90%) Slope (0.50) 2.5 11 .9%
sandy loam, 3
to 9 percent
slopes
27 Epping silt loam, Somewhat limited Epping (85%) Depth to soft 0.2 1 . 1 %
0 to 9 percent I bedrock (1 .00)
slopes
Slope (0.13)
31 Kim-Mitchell Not limited Kim (45%) 2.8 13.2%
complex, 0 to 6
percent slopes Mitchell (40%)
Totals for Area of Interest 21 .2 100.0%
Small Commercial Buildings— Summary by Rating Value
Rating Acres in AOI Percent of AOI
Not limited 18.4 87.0%
Somewhat limited 2.8 13.0%
Totals for Area of Interest 21 .2 100.0%
Rating Options—Small Commercial Buildings
Aggregation Method: Dominant Condition
Component Percent Cutoff: None Specified
Tie-break Rule: Higher
Land Classifications
Land Classifications are specified land use and management groupings that are
assigned to soil areas because combinations of soil have similar behavior for specified
practices. Most are based on soil properties and other factors that directly influence
the specific use of the soil . Example classifications include ecological site
classification, farmland classification, irrigated and nonirrigated land capability
classification, and hydric rating.
25
Custom Soil Resource Report
Farmland Classification
Farmland classification identifies map units as prime farmland, farmland of statewide
importance, farmland of local importance, or unique farmland . It identifies the location
and extent of the soils that are best suited to food, feed, fiber, forage, and oilseed
crops. NRCS policy and procedures on prime and unique farmlands are published in
the "Federal Register," Vol. 43, No. 21 , January 31 , 1978.
26
Custom Soil Resource Report
M Map—Farmland Classification
vi
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Map Scale: 1:2,430 if printed on A landscape (11" x 8.5") sheet.
ici
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AFeet
0 100 200 400 600
Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 13N WG584
27
Custom Soil Resource Report
MAP LEGEND
Area of Interest (AOl) M Prime farmland if • • Prime farmland if ,rr• Prime farmland if irrigated . Prime farmland if
Area of Interest (AOI) subsoiled, completely protected from flooding or and reclaimed of excess irrigated and drained
removing the root not frequently flooded salts and sodium O Prime farmland if
Soils inhibiting soil layer during the growing season • • Farmland of statewide irrigated and either
Soil Rating Polygons . Prime farmland if irrigated • • Prime farmland if irrigated importance protected from flooding
0 Not prime farmland and the product of I (soil ,s,,r Farmland of local or not frequently flooded
erodibility) x C (climate • • Prime farmland if drained during the growing
does not exceed 60 and either protected from importance
factor) season
All areas are prime flooding or not frequently 42,..• Farmland of unique
farmland IIMI Prime farmland if irrigated D Prime farmland if
ooded
M Prime farmland if drained and reclaimed of excess season during the growing importancesubsoiled, completely
salts and sodium • • Not rated or not available removing the root
Prime farmland if Farmland of statewide .ti, • Prime farmland if irrigated inhibiting soil layer
Soil Rating Points
importance
protected from flooding or and drained ® Prime farmland if
not frequently flooded • • Prime farmland if irrigated Not prime farmland
q Y 9 irrigated and the product
during the growing season Farmland of local and either protected from of I (soil erodibility) x C
importance flooding or not frequently ® All areas are prime
Prime farmland if irrigated farmland (climate factor) does not
. Farmland of unique flooded during the growing exceed 60
M Prime farmland if drained importance season 0 Prime farmland if drained
In Prime farmland if
and either protected from M Not rated or not available • • Prime farmland if Prime farmland if irrigated and reclaimed of
flooding or not frequently subsoiled, completely 0 protected from flooding or excess salts and sodium
flooded during the growing Soil Rating Lines removing the root not frequently flooded O Farmland of statewide
season ,s,•► Not prime farmland inhibiting soil layer Y during the growing season importance
MI Prime farmland if irrigated ,a.v• Prime farmland if irri ated
and drained Asa. All areas are prime g D Prime farmland if irrigated Farmland of local
farmland and the product of I (soil importance
M Prime farmland if irrigated erodibility) x C (climate O Prime farmland if drained
and either protected from • • Prime farmland if drained factor) does not exceed 60 and either protected from if Farmland of unique
flooding or not frequently flooding or not frequently importance
flooded during the growing flooded during the growing D Not rated or not available
season season
Water Features
28
Custom Soil Resource Report
MAP INFORMATION
Streams and Canals The soil surveys that comprise your AOI were mapped at 1 :24,000.
Transportation
Rails Warning: Soil Map may not be valid at this scale.
ti Interstate Highways Enlargement of maps beyond the scale of mapping can cause
US Routes misunderstanding of the detail of mapping and accuracy of soil line
placement. The maps do not show the small areas of contrasting
Major Roads soils that could have been shown at a more detailed scale.
Local Roads
Background Please rely on the bar scale on each map sheet for map
Aerial Photography measurements.
Source of Map: Natural Resources Conservation Service
Web Soil Survey URL: http://websoilsurvey.nrcs.usda.gov
Coordinate System: Web Mercator (EPSG:3857)
Maps from the Web Soil Survey are based on the Web Mercator
projection, which preserves direction and shape but distorts
distance and area. A projection that preserves area, such as the
Albers equal-area conic projection, should be used if more accurate
calculations of distance or area are required.
This product is generated from the USDA-NRCS certified data as of
the version date(s) listed below.
Soil Survey Area: Weld County, Colorado, Northern Part
Survey Area Data: Version 8, Apr 30, 2009
Soil map units are labeled (as space allows) for map scales 1 :50,000
or larger.
Date(s) aerial images were photographed: Sep 30, 2010—Oct 19,
2011
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—Farmland Classification
Farmland Classification— Summary by Map Unit — Weld County, Colorado, Northern Part (CO617)
Map unit symbol Map unit name Rating Acres in AOI Percent of AOI
17 Bushman fine sandy Farmland of statewide 15.6 73.8%
loam, 0 to 3 percent importance
slopes
18 Bushman fine sandy Not prime farmland 2.5 11 .9%
loam, 3 to 9 percent
slopes
27 Epping silt loam, 0 to 9 Not prime farmland 0.2 1 .1 %
percent slopes
31 Kim-Mitchell complex, 0 Farmland of statewide 2.8 13.2%
to 6 percent slopes importance
Totals for Area of Interest 21.2 100.0%
Rating Options—Farmland Classification
Aggregation Method: No Aggregation Necessary
Tie-break Rule: Lower
30
Custom Soil Resource Report
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 Physical Properties
Soil Physical Properties are measured or inferred from direct observations in the field
or laboratory. Examples of soil physical properties include percent clay, organic
matter, saturated hydraulic conductivity, available water capacity, and bulk density.
Linear Extensibility
Linear extensibility refers to the change in length of an unconfined clod as moisture
content is decreased from a moist to a dry state. It is an expression of the volume
change between the water content of the clod at 1 /3- or 1 /10-bar tension (33kPa or
10kPa tension) and oven dryness. The volume change is reported as percent change
for the whole soil. The amount and type of clay minerals in the soil influence volume
change.
For each soil layer, this attribute is actually recorded as three separate values in the
database. A low value and a high value indicate the range of this attribute for the soil
component. A "representative" value indicates the expected value of this attribute for
the component. For this soil property, only the representative value is used.
31
Custom Soil Resource Report
M Map—Linear Extensibility
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Map Scale: 1:2,430 if printed on A landscape (11" x 8.5") sheet. rn
rn
o N Meters R,
0 35 70 140 210
AFeet
0 100 200 400 600
Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 13N WG584
32
Custom Soil Resource Report
MAP LEGEND MAP INFORMATION
Area of Interest (AOl) US Routes The soil surveys that comprise your AOI were mapped at 1 :24,000.
Area of Interest (AOl) Major Roads
Soils Local Roads Warning: Soil Map may not be valid at this scale.
Soil Rating Polygons
El Low (0 - 3) Background Enlargement of maps beyond the scale of mapping can cause
Aerial Photography misunderstanding of the detail of mapping and accuracy of soil line
Moderate (3 - 6) placement. The maps do not show the small areas of contrasting
High (6 - 9) soils that could have been shown at a more detailed scale.
11. Very High (9 - 30)
Please rely on the bar scale on each map sheet for map
Not rated or not available measurements.
Soil Rating Lines
,.•v Low (0 - 3) Source of Map: Natural Resources Conservation Service
Web Soil Survey URL: http://websoilsurvey.nrcs.usda.gov
• • Moderate (3 - 6) Coordinate System: Web Mercator (EPSG:3857)
• • High (6 - 9)
Maps from the Web Soil Survey are based on the Web Mercator
,.y Very High (9 - 30) projection, which preserves direction and shape but distorts
• • Not rated or not available distance and area. A projection that preserves area, such as the
Albers equal-area conic projection, should be used if more accurate
Soil Rating Points calculations of distance or area are required.
Low (0 - 3)
Moderate (3 - 6) This product is generated from the USDA-NRCS certified data as of
the version date(s) listed below.
O High (6 - 9)
Very High (9 - 30) Soil Survey Area: Weld County, Colorado, Northern Part
Survey Area Data: Version 8, Apr 30, 2009
o Not rated or not available
Water Features Soil map units are labeled (as space allows) for map scales 1 :50,000
Streams and Canals or larger.
Transportation Date(s) aerial images were photographed: Sep 30, 2010—Oct 19,
+-4-t Rails 2011
ti Interstate Highways
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.
33
Custom Soil Resource Report
Table—Linear Extensibility
Linear Extensibility— Summary by Map Unit — Weld County, Colorado, Northern Part (CO617)
Map unit symbol Map unit name Rating (percent) Acres in AOI Percent of AOI
17 Bushman fine sandy 1 .5 15.6 73.8%
loam, 0 to 3 percent
slopes
18 Bushman fine sandy 1 .5 2.5 11 .9%
loam, 3 to 9 percent
slopes
27 Epping silt loam, 0 to 9 1 .5 0.2 1 .1 %
percent slopes
31 Kim-Mitchell complex, 0 1 .5 2.8 13.2%
to 6 percent slopes
Totals for Area of Interest 21.2 100.0%
Rating Options—Linear Extensibility
Units of Measure: percent
Aggregation Method: Dominant Component
Component Percent Cutoff: None Specified
Tie-break Rule: Higher
Interpret Nulls as Zero: No
Layer Options (Horizon Aggregation Method): All Layers (Weighted Average)
34
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://soils.usda .gov/
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://soils. usda.gov/
Soil Survey Staff. 2006. Keys to soil taxonomy. 10th edition. U .S. Department of
Agriculture, Natural Resources Conservation Service. http://soils.usda.gov/
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://soils.usda.gov/
United States Department of Agriculture, Natural Resources Conservation Service.
National range and pasture handbook. http://www.glti .nrcs.usda.gov/
United States Department of Agriculture, Natural Resources Conservation Service.
National soil survey handbook, title 430-VI . http://soils.usda .gov/
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://soils.usda.gov/
35
Custom Soil Resource Report
United States Department of Agriculture, Soil Conservation Service. 1961 . Land
capability classification. U .S. Department of Agriculture Handbook 210.
36
USDA United States A product of the National Custom Soil Resource
ra Department of Cooperative Soil Survey,
Agriculture a joint effort of the United Report for
4 States Department of
N RCS Agricultuz:ctte
d o VVe I d C o u n ty ,
Federal
Natural agencies including the Colorado , I� orthern
Resources Agricultural Experiment
Conservation Stations, and local
Service participants Part
Keota Substation
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•
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0 8 000 ft •:
October 21 , 2013
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://soils. usda .gov/sqi/) and certain
conservation and engineering applications. For more detailed information, contact
your local USDA Service Center (http://offices.sc.egov.usda .gov/locator/app?
agency=nrcs) or your NRCS State Soil Scientist (http://soils.usda.gov/contact/
state offices/).
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 Soil Data Mart Web site or the NRCS Web Soil Survey. The Soil
Data Mart is the data storage site for the 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 alternative means
2
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 (800) 795-3272
(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 7
Soil Map 8
Legend 9
Map Unit Legend 10
Map Unit Descriptions 10
Weld County, Colorado, Northern Part 12
4—Ascalon fine sandy loam, 0 to 6 percent slopes 12
40—Nunn loam, 0 to 6 percent slopes 13
44—Olney fine sandy loam, 0 to 6 percent slopes 14
54—Platner loam, 0 to 3 percent slopes 15
76—Wages fine sandy loam, 6 to 9 percent slopes 16
Soil Information for All Uses 18
Suitabilities and Limitations for Use 18
Building Site Development 18
Dwellings Without Basements 18
Small Commercial Buildings 22
Land Classifications 26
Farmland Classification 27
Soil Properties and Qualities 32
Soil Physical Properties 32
Linear Extensibility 32
References 36
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
scientists classified and named the soils in the survey area, they compared the
5
Custom Soil Resource Report
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
identified each as a specific map unit. Aerial photographs show trees, buildings, fields,
roads, and rivers, all of which help in locating boundaries accurately.
6
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.
7
Custom Soil Resource Report
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8
Custom Soil Resource Report
MAP LEGEND MAP INFORMATION
Area of Interest (AOl) -# Spoil Area The soil surveys that comprise your AOI were mapped at 1 :24,000.
Area of Interest (AOl) Stony Spot
,:
Soils r, Very Stony Spot Warning: Soil Map may not be valid at this scale.
Soil Map Unit Polygons
Wet Spot Enlargement of maps beyond the scale of mapping can cause
��. Soil Map Unit Lines misunderstanding of the detail of mapping and accuracy of soil line
Other
Soil Map Unit Points placement. The maps do not show the small areas of contrasting
Special Line Features soils that could have been shown at a more detailed scale.
Special Point Features
V Blowout Water Features
Streams and Canals Please rely on the bar scale on each map sheet for map
C4 Borrow Pit measurements.
Transportation
X Clay Spot
Rails Source of Map: Natural Resources Conservation Service
Closed Depression ti Interstate Highways Web Soil Survey URL: http://websoilsurvey.nrcs.usda.gov
X Gravel Pit US Routes Coordinate System: Web Mercator (EPSG:3857)
• Gravelly Spot Major Roads Maps from the Web Soil Survey are based on the Web Mercator
Landfill Local Roads projection, which preserves direction and shape but distorts
distance and area. A projection that preserves area, such as the
Lava Flow Background Albers equal-area conic projection, should be used if more accurate
4k, Marsh or swamp Aerial Photography calculations of distance or area are required.
ft Mine or Quarry This product is generated from the USDA-NRCS certified data as of
® Miscellaneous Water the version date(s) listed below.
O Perennial Water
Soil Survey Area: Weld County, Colorado, Northern Part
v Rock Outcrop Survey Area Data: Version 8, Apr 30, 2009
+ Saline Spot
Soil map units are labeled (as space allows) for map scales 1 :50,000
••• Sandy Spot or larger.
• •
o Severely Eroded Spot
Date(s) aerial images were photographed: Apr 22, 2011—Oct 19,
® Sinkhole 2011
Slide or Slip
The orthophoto or other base map on which the soil lines were
0o Sodic Spot 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.
9
Custom Soil Resource Report
Map Unit Legend
Weld County, Colorado, Northern Part (CO617)
Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI
4 Ascalon fine sandy loam, 0 to 6 21 .0 27.1%
percent slopes
40 Nunn loam, 0 to 6 percent slopes 3.0 3.9%
44 Olney fine sandy loam, 0 to 6 21 .1 27.3%
percent slopes
54 Platner loam, 0 to 3 percent 21 .6 27.9%
slopes
76 ' Wages fine sandy loam, 6 to 9 10.7 13.9%
percent slopes
Totals for Area of Interest 77.5 100.0%
Map Unit Descriptions
The map units delineated on the detailed soil maps in a soil survey represent the soils
or miscellaneous areas in the survey area. The map unit descriptions, along with the
maps, can be used to determine the composition and properties of a unit.
A map unit delineation on a soil map represents an area dominated by one or more
major kinds of soil or miscellaneous areas. A map unit is identified and named
according to the taxonomic classification of the dominant soils. Within a taxonomic
class there are precisely defined limits for the properties of the soils. On the landscape,
however, the soils are natural phenomena, and they have the characteristic variability
of all natural phenomena. Thus, the range of some observed properties may extend
beyond the limits defined for a taxonomic class. Areas of soils of a single taxonomic
class rarely, if ever, can be mapped without including areas of other taxonomic
classes. Consequently, every map unit is made up of the soils or miscellaneous areas
for which it is named and some minor components that belong to taxonomic classes
other than those of the major soils.
Most minor soils have properties similar to those of the dominant soil or soils in the
map unit, and thus they do not affect use and management. These are called
noncontrasting , or similar, components. They may or may not be mentioned in a
particular map unit description. Other minor components, however, have properties
and behavioral characteristics divergent enough to affect use or to require different
management. These are called contrasting , or dissimilar, components. They generally
are in small areas and could not be mapped separately because of the scale used .
Some small areas of strongly contrasting soils or miscellaneous areas are identified
by a special symbol on the maps. If included in the database for a given area, the
contrasting minor components are identified in the map unit descriptions along with
some characteristics of each . A few areas of minor components may not have been
observed, and consequently they are not mentioned in the descriptions, especially
where the pattern was so complex that it was impractical to make enough observations
to identify all the soils and miscellaneous areas on the landscape.
10
Custom Soil Resource Report
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.
11
Custom Soil Resource Report
Weld County, Colorado, Northern Part
4—Ascalon fine sandy loam, 0 to 6 percent slopes
Map Unit Setting
Elevation: 4,500 to 6,500 feet
Mean annual precipitation: 13 to 17 inches
Mean annual air temperature: 46 to 57 degrees F
Frost-free period: 130 to 160 days
Map Unit Composition
Ascalon and similar soils: 85 percent
Minor components: 15 percent
Description of Ascalon
Setting
Landform: Plains
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Calcareous loamy alluvium
Properties and qualities
Slope: 0 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
(0.60 to 2.00 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Calcium carbonate, maximum content 10 percent
Maximum salinity: Nonsaline (0.0 to 2.0 mmhos/cm)
Available water capacity: Moderate (about 6.9 inches)
Interpretive groups
Farmland classification: Farmland of statewide importance
Land capability classification (irrigated): 3e
Land capability (nonirrigated): 3e
Hydrologic Soil Group: B
Ecological site: Loamy Plains (R067BY002CO)
Typical profile
0 to 8 inches: Fine sandy loam
8 to 22 inches: Sandy clay loam
22 to 60 inches: Sandy loam
Minor Components
Olney
Percent of map unit: 8 percent
Otero
Percent of map unit: 7 percent
12
Custom Soil Resource Report
40—Nunn loam , 0 to 6 percent slopes
Map Unit Setting
Elevation: 4,500 to 6,700 feet
Mean annual precipitation: 12 to 18 inches
Mean annual air temperature: 46 to 54 degrees F
Frost-free period: 115 to 180 days
Map Unit Composition
Nunn and similar soils: 85 percent
Minor components: 15 percent
Description of Nunn
Setting
Landform: Plains, stream terraces
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Calcareous loamy alluvium
Properties and qualities
Slope: 0 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 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
Calcium carbonate, maximum content: 15 percent
Maximum salinity: Nonsaline (0.0 to 2.0 mmhos/cm)
Available water capacity: Moderate (about 9.0 inches)
Interpretive groups
Farmland classification: Prime farmland if irrigated
Land capability (nonirrigated): 4c
Hydrologic Soil Group: C
Ecological site: Loamy Plains (R067BY002CO)
Typical profile
0 to 7 inches: Loam
7 to 23 inches: Clay loam
23 to 60 inches: Clay loam
60 to 64 inches: Sandy clay loam
Minor Components
Manzanola
Percent of map unit: 8 percent
13
Custom Soil Resource Report
Avar
Percent of map unit 7 percent
44—Olney fine sandy loam, 0 to 6 percent slopes
Map Unit Setting
Elevation: 3,500 to 5,800 feet
Mean annual precipitation: 11 to 15 inches
Mean annual air temperature: 46 to 54 degrees F
Frost-free period: 125 to 175 days
Map Unit Composition
Olney and similar soils: 85 percent
Minor components: 15 percent
Description of Olney
Setting
Landform: Plains
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Calcareous loamy alluvium
Properties and qualities
Slope: 0 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 2.00 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Calcium carbonate, maximum content: 15 percent
Maximum salinity: Nonsaline (0.0 to 2.0 mmhos/cm)
Available water capacity: Moderate (about 8. 1 inches)
Interpretive groups
Farmland classification: Farmland of statewide importance
Land capability (nonirrigated): 4c
Hydrologic Soil Group: B
Ecological site: Loamy Plains (R067BY002CO)
Typical profile
0 to 6 inches: Fine sandy loam
6 to 18 inches: Sandy clay loam
18 to 60 inches: Sandy loam
60 to 64 inches: Sandy loam
14
Custom Soil Resource Report
Minor Components
Stoneham
Percent of map unit: 9 percent
Ascalon
Percent of map unit 6 percent
54—Platner loam, 0 to 3 percent slopes
Map Unit Setting
Elevation: 4,500 to 5,900 feet
Mean annual precipitation: 17 to 19 inches
Mean annual air temperature: 46 to 52 degrees F
Frost-free period: 140 to 165 days
Map Unit Composition
Platner and similar soils: 80 percent
Minor components: 20 percent
Description of Platner
Setting
Landform: Plains, stream terraces
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Calcareous loamy alluvium
Properties and qualities
Slope: 0 to 3 percent
Depth to restrictive feature: More than 80 inches
Drainage class: Well drained
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
Calcium carbonate, maximum content: 10 percent
Maximum salinity: Nonsaline (0.0 to 2.0 mmhos/cm)
Available water capacity: Moderate (about 8.9 inches)
Interpretive groups
Farmland classification: Prime farmland if irrigated
Land capability classification (irrigated): 2e
Land capability (nonirrigated): 3e
Hydrologic Soil Group: C
Ecological site: Loamy Plains (R067BY002CO)
Typical profile
0 to 4 inches: Loam
4 to 24 inches: Clay
15
Custom Soil Resource Report
24 to 60 inches: Sandy loam
Minor Components
Ascalon
Percent of map unit 8 percent
Manzanola
Percent of map unit 6 percent
Nunn
Percent of map unit 6 percent
76—Wages fine sandy loam , 6 to 9 percent slopes
Map Unit Setting
Elevation: 3,900 to 5,600 feet
Mean annual precipitation: 15 to 19 inches
Mean annual air temperature: 46 to 52 degrees F
Frost-free period: 135 to 155 days
Map Unit Composition
Wages and similar soils: 90 percent
Minor components: 10 percent
Description of Wages
Setting
Landform: Plains
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Calcareous loamy alluvium
Properties and qualities
Slope: 6 to 9 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
(0.20 to 2.00 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Calcium carbonate, maximum content 15 percent
Maximum salinity: Nonsaline (0.0 to 2.0 mmhos/cm)
Available water capacity: Moderate (about 8.6 inches)
Interpretive groups
Farmland classification: Not prime farmland
Land capability classification (irrigated): 4e
Land capability (nonirrigated): 4e
Hydrologic Soil Group: B
Ecological site: Loamy Plains (R067BY002CO)
16
Custom Soil Resource Report
Typical profile
0 to 4 inches: Fine sandy loam
4 to 12 inches: Sandy clay loam
12 to 60 inches: Loam
60 to 64 inches: Sandy loam, gravelly sandy loam
Minor Components
Kim
Percent of map unit 5 percent
Mitchell
Percent of map unit 5 percent
17
Soil Information for All Uses
Suitabilities and Limitations for Use
The Suitabilities and Limitations for Use section includes various soil interpretations
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 interpretation.
Building Site Development
Building site development interpretations are designed to be used as tools for
evaluating soil suitability and identifying soil limitations for various construction
purposes. As part of the interpretation process, the rating applies to each soil in its
described condition and does not consider present land use. Example interpretations
can include corrosion of concrete and steel, shallow excavations, dwellings with and
without basements, small commercial buildings, local roads and streets, and lawns
and landscaping.
Dwellings Without Basements
Dwellings are single-family houses of three stories or less. For dwellings without
basements, the foundation is assumed to consist of spread footings of reinforced
concrete built on undisturbed soil at a depth of 2 feet or at the depth of maximum frost
penetration, whichever is deeper.
The ratings for dwellings are based on the soil properties that affect the capacity of
the soil to support a load without movement and on the properties that affect
excavation and construction costs. The properties that affect the load-supporting
capacity include depth to a water table, ponding, flooding, subsidence, linear
extensibility (shrink-swell potential), and compressibility. Compressibility is inferred
from the Unified classification of the soil. The properties that affect the ease and
amount of excavation include depth to a water table, ponding, flooding, slope, depth
to bedrock or a cemented pan, hardness of bedrock or a cemented pan, and the
amount and size of rock fragments.
The ratings are both verbal and numerical . Rating class terms indicate the extent to
which the soils are limited by all of the soil features that affect the specified use. "Not
18
Custom Soil Resource Report
limited" indicates that the soil has features that are very favorable for the specified
use. Good performance and very low maintenance can be expected . "Somewhat
limited" indicates that the soil has features that are moderately favorable for the
specified use. The limitations can be overcome or minimized by special planning,
design, or installation . Fair performance and moderate maintenance can be expected.
"Very limited" indicates that the soil has one or more features that are unfavorable for
the specified use. The limitations generally cannot be overcome without major soil
reclamation, special design, or expensive installation procedures. Poor performance
and high maintenance can be expected.
Numerical ratings indicate the severity of individual limitations. The ratings are shown
as decimal fractions ranging from 0.01 to 1 .00. They indicate gradations between the
point at which a soil feature has the greatest negative impact on the use ( 1 .00) and
the point at which the soil feature is not a limitation (0.00).
The map unit components listed for each map unit in the accompanying Summary by
Map Unit table in Web Soil Survey or the Aggregation Report in Soil Data Viewer are
determined by the aggregation method chosen . An aggregated rating class is shown
for each map unit. The components listed for each map unit are only those that have
the same rating class as listed for the map unit. The percent composition of each
component in a particular map unit is presented to help the user better understand the
percentage of each map unit that has the rating presented.
Other components with different ratings may be present in each map unit. The ratings
for all components, regardless of the map unit aggregated rating, can be viewed by
generating the equivalent report from the Soil Reports tab in Web Soil Survey or from
the Soil Data Mart site. Onsite investigation may be needed to validate these
interpretations and to confirm the identity of the soil on a given site.
19
Custom Soil Resource Report
M
Map—Dwellings Without Basements M
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20
Custom Soil Resource Report
MAP LEGEND MAP INFORMATION
Area of Interest (A01) Background The soil surveys that comprise your AOI were mapped at 1 :24,000.
Area of Interest (AOI) Aerial Photography
Soils Warning: Soil Map may not be valid at this scale.
Soil Rating Polygons
Very limited Enlargement of maps beyond the scale of mapping can cause
misunderstanding of the detail of mapping and accuracy of soil line
Somewhat limited placement. The maps do not show the small areas of contrasting
Not limited soils that could have been shown at a more detailed scale.
Not rated or not available
Please rely on the bar scale on each map sheet for map
Soil Rating Lines measurements.
..yo Very limited
• • Somewhat limited Source of Map: Natural Resources Conservation Service
Web Soil Survey URL: http://websoilsurvey.nrcs.usda.gov
ow Not limited Coordinate System: Web Mercator (EPSG:3857)
• • Not rated or not available
Maps from the Web Soil Survey are based on the Web Mercator
Soil Rating Points projection, which preserves direction and shape but distorts
is Very limited distance and area. A projection that preserves area, such as the
Somewhat limited Albers equal-area conic projection, should be used if more accurate
calculations of distance or area are required.
Not limited
p Not rated or not available This product is generated from the USDA-NRCS certified data as of
the version date(s) listed below.
Water Features
Streams and Canals Soil Survey Area: Weld County, Colorado, Northern Part
Transportation Survey Area Data: Version 8, Apr 30, 2009
Rails
Soil map units are labeled (as space allows) for map scales 1 :50,000
Interstate Highways or larger.
US Routes
Date(s) aerial images were photographed: Apr 22, 2011—Oct 19,
Major Roads 2011
Local Roads
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 boundarics may be evident.
21
Custom Soil Resource Report
Tables—Dwellings Without Basements
Dwellings Without Basements— Summary by Map Unit — Weld County, Colorado, Northern Part (CO617)
Map unit symbol Map unit name Rating Component Rating reasons Acres in AOI Percent of AOI
name (percent) (numeric values)
4 Ascalon fine Not limited Ascalon (85%) 21 .0 27. 1 %
sandy loam, 0
to 6 percent
slopes
40 Nunn loam, 0 to 6 Somewhat limited Nunn (85%) Shrink-swell 3.0 3.9%
percent slopes (0.50)
44 Olney fine sandy Not limited Olney (85%) 21 . 1 27.3%
loam, 0 to 6
percent slopes
54 Platner loam, 0 to Not limited Platner (80%) 21 .6 27.9%
3 percent
slopes
76 Wages fine sandy Somewhat limited Wages (90%) Slope (0.00) 10.7 13.9%
loam, 6 to 9
percent slopes
Totals for Area of Interest 77.5 100.0%
Dwellings Without Basements— Summary by Rating Value
Rating Acres in AOI Percent of AOI
Not limited 63.7 I 82.3%
Somewhat limited 13.7 17.7%
Totals for Area of Interest 77.5 100.0%
Rating Options—Dwellings Without Basements
Aggregation Method: Dominant Condition
Component Percent Cutoff. None Specified
Tie-break Rule: Higher
Small Commercial Buildings
Small commercial buildings are structures that are less than three stories high and do
not have basements. The foundation is assumed to consist of spread footings of
reinforced concrete built on undisturbed soil at a depth of 2 feet or at the depth of
maximum frost penetration, whichever is deeper. The ratings are based on the soil
properties that affect the capacity of the soil to support a load without movement and
on the properties that affect excavation and construction costs. The properties that
affect the load-supporting capacity include depth to a water table, ponding, flooding ,
subsidence, linear extensibility (shrink-swell potential), and compressibility (which is
inferred from the Unified classification of the soil). The properties that affect the ease
and amount of excavation include flooding, depth to a water table, ponding , slope,
22
Custom Soil Resource Report
depth to bedrock or a cemented pan, hardness of bedrock or a cemented pan , and
the amount and size of rock fragments.
The ratings are both verbal and numerical . Rating class terms indicate the extent to
which the soils are limited by all of the soil features that affect the specified use. "Not
limited" indicates that the soil has features that are very favorable for the specified
use. Good performance and very low maintenance can be expected. "Somewhat
limited" indicates that the soil has features that are moderately favorable for the
specified use. The limitations can be overcome or minimized by special planning,
design, or installation . Fair performance and moderate maintenance can be expected.
"Very limited" indicates that the soil has one or more features that are unfavorable for
the specified use. The limitations generally cannot be overcome without major soil
reclamation, special design, or expensive installation procedures. Poor performance
and high maintenance can be expected.
Numerical ratings indicate the severity of individual limitations. The ratings are shown
as decimal fractions ranging from 0.01 to 1 .00. They indicate gradations between the
point at which a soil feature has the greatest negative impact on the use ( 1 .00) and
the point at which the soil feature is not a limitation (0.00).
The map unit components listed for each map unit in the accompanying Summary by
Map Unit table in Web Soil Survey or the Aggregation Report in Soil Data Viewer are
determined by the aggregation method chosen . An aggregated rating class is shown
for each map unit. The components listed for each map unit are only those that have
the same rating class as listed for the map unit. The percent composition of each
component in a particular map unit is presented to help the user better understand the
percentage of each map unit that has the rating presented.
Other components with different ratings may be present in each map unit. The ratings
for all components, regardless of the map unit aggregated rating, can be viewed by
generating the equivalent report from the Soil Reports tab in Web Soil Survey or from
the Soil Data Mart site. Onsite investigation may be needed to validate these
interpretations and to confirm the identity of the soil on a given site.
23
Custom Soil Resource Report
IJI M Map—Small Commercial Buildings M
ri
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:� bt
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Meters
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A
Feet
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Map projection: Web Mercator Comer coordinates: WGS84 Edge tics: UTM Zone 13N WGS84
24
Custom Soil Resource Report
MAP LEGEND MAP INFORMATION
Area of Interest (AOl) Background The soil surveys that comprise your AOI were mapped at 1 :24,000.
Area of Interest (AOI) Aerial Photography
Soils Warning: Soil Map may not be valid at this scale.
Soil Rating Polygons
al Very limited Enlargement of maps beyond the scale of mapping can cause
misunderstanding of the detail of mapping and accuracy of soil line
Somewhat limited placement. The maps do not show the small areas of contrasting
Not limited soils that could have been shown at a more detailed scale.
Not rated or not available
Please rely on the bar scale on each map sheet for map
Soil Rating Lines measurements.
Very limited
• • Somewhat limited Source of Map: Natural Resources Conservation Service
Web Soil Survey URL: http://websoilsurvey.nrcs.usda.gov
��. Not limited Coordinate System: Web Mercator (EPSG:3857)
• • Not rated or not available
Maps from the Web Soil Survey are based on the Web Mercator
Soil Rating Points projection, which preserves direction and shape but distorts
Very limited distance and area. A projection that preserves area, such as the
CI Somewhat limited Albers equal-area conic projection, should be used if more accurate
calculations of distance or area are required.
O Not limited
Not rated or not available This product is generated from the USDA-NRCS certified data as of
the version date(s) listed below.
Water Features
Streams and Canals Soil Survey Area: Weld County, Colorado, Northern Part
Transportation Survey Area Data: Version 8, Apr 30, 2009
III Rails
Soil map units are labeled (as space allows) for map scales 1 :50,000
,rteo Interstate Highways or larger.
US Routes
Date(s) aerial images were photographed: Apr 22, 2011—Oct 19,
Major Roads 2011
Local Roads
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.
25
Custom Soil Resource Report
Tables—Small Commercial Buildings
Small Commercial Buildings— Summary by Map Unit — Weld County, Colorado, Northern Part (CO617)
Map unit symbol Map unit name Rating Component Rating reasons Acres in AOI Percent of AOI
name (percent) (numeric values)
4 Ascalon fine Not limited Ascalon (85%) 21 .0 27. 1 %
sandy loam, 0
to 6 percent
slopes
40 Nunn loam, 0 to 6 Somewhat limited Nunn (85%) Shrink-swell 3.0 3.9%
percent slopes (0.50)
44 Olney fine sandy Not limited Olney (85%) 21 . 1 27.3%
loam, 0 to 6
percent slopes
54 Platner loam, 0 to Not limited Platner (80%) 21 .6 27.9%
3 percent
slopes
76 Wages fine sandy Very limited Wages (90%) Slope (1 .00) 10.7 13.9%
loam, 6 to 9
percent slopes
Totals for Area of Interest 77.5 100.0%
Small Commercial Buildings— Summary by Rating Value
Rating Acres in AOI Percent of AOI
Not limited 63.7 82.3%
Very limited 10.7 13.9%
Somewhat limited 3.0 3.9%
Totals for Area of Interest 77.5 100.0%
Rating Options—Small Commercial Buildings
Aggregation Method: Dominant Condition
Component Percent Cutoff: None Specified
Tie-break Rule: Higher
Land Classifications
Land Classifications are specified land use and management groupings that are
assigned to soil areas because combinations of soil have similar behavior for specified
practices. Most are based on soil properties and other factors that directly influence
the specific use of the soil . Example classifications include ecological site
classification, farmland classification , irrigated and nonirrigated land capability
classification, and hydric rating.
26
Custom Soil Resource Report
Farmland Classification
Farmland classification identifies map units as prime farmland, farmland of statewide
importance, farmland of local importance, or unique farmland . It identifies the location
and extent of the soils that are best suited to food, feed, fiber, forage, and oilseed
crops. NRCS policy and procedures on prime and unique farmlands are published in
the "Federal Register," Vol. 43, No. 21 , January 31 , 1978.
27
Custom Soil Resource Report
u, Map—Farmland Classification
M M
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Meters
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A
Feet
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28
Custom Soil Resource Report
MAP LEGEND
Area of Interest (AOl) M Prime farmland if • • Prime farmland if ,rr• Prime farmland if irrigated . Prime farmland if
Area of Interest (AOI) subsoiled, completely protected from flooding or and reclaimed of excess irrigated and drained
removing the root not frequently flooded salts and sodium O Prime farmland if
Soils inhibiting soil layer during the growing season • • Farmland of statewide irrigated and either
Soil Rating Polygons . Prime farmland if irrigated • • Prime farmland if irrigated importance protected from flooding
0 Not prime farmland and the product of I (soil ,s,,r Farmland of local or not frequently flooded
erodibility) x C (climate • • Prime farmland if drained during the growing
does not exceed 60 and either protected from importance
factor) season
All areas are prime flooding or not frequently 42,..• Farmland of unique
farmland IIMI Prime farmland if irrigated D Prime farmland if
ooded
M Prime farmland if drained and reclaimed of excess season during the growing importancesubsoiled, completely
salts and sodium • • Not rated or not available removing the root
Prime farmland if Farmland of statewide .ti, • Prime farmland if irrigated inhibiting soil layer
Soil Rating Points
importance
protected from flooding or and drained ® Prime farmland if
not frequently flooded • • Prime farmland if irrigated Not prime farmland
q Y 9 irrigated and the product
during the growing season Farmland of local and either protected from of I (soil erodibility) x C
importance flooding or not frequently ® All areas are prime
Prime farmland if irrigated farmland (climate factor) does not
. Farmland of unique flooded during the growing exceed 60
M Prime farmland if drained importance season 0 Prime farmland if drained
In Prime farmland if
and either protected from M Not rated or not available • • Prime farmland if Prime farmland if irrigated and reclaimed of
flooding or not frequently subsoiled, completely 0 protected from flooding or excess salts and sodium
flooded during the growing Soil Rating Lines removing the root not frequently flooded O Farmland of statewide
season ,s,•► Not prime farmland inhibiting soil layer Y during the growing season importance
MI Prime farmland if irrigated ,a.v• Prime farmland if irri ated
and drained Asa. All areas are prime g D Prime farmland if irrigated Farmland of local
farmland and the product of I (soil importance
M Prime farmland if irrigated erodibility) x C (climate O Prime farmland if drained
and either protected from • • Prime farmland if drained factor) does not exceed 60 and either protected from if Farmland of unique
flooding or not frequently flooding or not frequently importance
flooded during the growing flooded during the growing D Not rated or not available
season season
Water Features
29
Custom Soil Resource Report
MAP INFORMATION
Streams and Canals The soil surveys that comprise your AOI were mapped at 1 :24,000.
Transportation
Rails Warning: Soil Map may not be valid at this scale.
ti Interstate Highways Enlargement of maps beyond the scale of mapping can cause
US Routes misunderstanding of the detail of mapping and accuracy of soil line
placement. The maps do not show the small areas of contrasting
Major Roads soils that could have been shown at a more detailed scale.
Local Roads
Background Please rely on the bar scale on each map sheet for map
Aerial Photography measurements.
Source of Map: Natural Resources Conservation Service
Web Soil Survey URL: http://websoilsurvey.nrcs.usda.gov
Coordinate System: Web Mercator (EPSG:3857)
Maps from the Web Soil Survey are based on the Web Mercator
projection, which preserves direction and shape but distorts
distance and area. A projection that preserves area, such as the
Albers equal-area conic projection, should be used if more accurate
calculations of distance or area are required.
This product is generated from the USDA-NRCS certified data as of
the version date(s) listed below.
Soil Survey Area: Weld County, Colorado, Northern Part
Survey Area Data: Version 8, Apr 30, 2009
Soil map units are labeled (as space allows) for map scales 1 :50,000
or larger.
Date(s) aerial images were photographed: Apr 22, 2011—Oct 19,
2011
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.
30
Custom Soil Resource Report
Table—Farmland Classification
Farmland Classification— Summary by Map Unit — Weld County, Colorado, Northern Part (CO617)
Map unit symbol Map unit name Rating Acres in AOI Percent of AOI
4 Ascalon fine sandy loam, Farmland of statewide 21 .0 27.1 %
0 to 6 percent slopes importance
40 Nunn loam, 0 to 6 percent Prime farmland if irrigated 3.0 3.9%
slopes 1
44 Olney fine sandy loam, 0 Farmland of statewide 21 .1 27.3%
to 6 percent slopes importance
54 Platner loam, 0 to 3 Prime farmland if irrigated 21 .6 27.9%
percent slopes
76 Wages fine sandy loam, 6 Not prime farmland 10.7 13.9%
to 9 percent slopes
Totals for Area of Interest 77.5 100.0%
Rating Options—Farmland Classification
Aggregation Method: No Aggregation Necessary
Tie-break Rule: Lower
31
Custom Soil Resource Report
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 Physical Properties
Soil Physical Properties are measured or inferred from direct observations in the field
or laboratory. Examples of soil physical properties include percent clay, organic
matter, saturated hydraulic conductivity, available water capacity, and bulk density.
Linear Extensibility
Linear extensibility refers to the change in length of an unconfined clod as moisture
content is decreased from a moist to a dry state. It is an expression of the volume
change between the water content of the clod at 1 /3- or 1 /10-bar tension (33kPa or
10kPa tension) and oven dryness. The volume change is reported as percent change
for the whole soil. The amount and type of clay minerals in the soil influence volume
change.
For each soil layer, this attribute is actually recorded as three separate values in the
database. A low value and a high value indicate the range of this attribute for the soil
component. A "representative" value indicates the expected value of this attribute for
the component. For this soil property, only the representative value is used.
32
Custom Soil Resource Report
M Map—Linear Extensibility M
° °
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40° 44'45"N It t. �y n{� T . - �# t -� r �:.�` '� ,; • , C i'. 40° 44'45"N
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M Map Scale: 1:4,500 if printed on A landscape (11" x 8.5") sheet. M
Meters
$ N 0 50 100 200 300 .~
A
Feet
0 200 400 800 1200
Map projection: Web Mercator Comer coordinates: WGS84 Edge tics: UTM Zone 13N WGS84
33
Custom Soil Resource Report
MAP LEGEND MAP INFORMATION
Area of Interest (AOl) US Routes The soil surveys that comprise your AOI were mapped at 1 :24,000.
Area of Interest (AOl) Major Roads
Soils Local Roads Warning: Soil Map may not be valid at this scale.
Soil Rating Polygons
El Low (0 - 3) Background Enlargement of maps beyond the scale of mapping can cause
Aerial Photography misunderstanding of the detail of mapping and accuracy of soil line
Moderate (3 - 6) placement. The maps do not show the small areas of contrasting
High (6 - 9) soils that could have been shown at a more detailed scale.
11. Very High (9 - 30)
Please rely on the bar scale on each map sheet for map
Not rated or not available measurements.
Soil Rating Lines
,.•v Low (0 - 3) Source of Map: Natural Resources Conservation Service
Web Soil Survey URL: http://websoilsurvey.nrcs.usda.gov
• • Moderate (3 - 6) Coordinate System: Web Mercator (EPSG:3857)
• • High (6 - 9)
Maps from the Web Soil Survey are based on the Web Mercator
,.y Very High (9 - 30) projection, which preserves direction and shape but distorts
• • Not rated or not available distance and area. A projection that preserves area, such as the
Albers equal-area conic projection, should be used if more accurate
Soil Rating Points calculations of distance or area are required.
Low (0 - 3)
Moderate (3 - 6) This product is generated from the USDA-NRCS certified data as of
the version date(s) listed below.
O High (6 - 9)
Very High (9 - 30) Soil Survey Area: Weld County, Colorado, Northern Part
Survey Area Data: Version 8, Apr 30, 2009
o Not rated or not available
Water Features Soil map units are labeled (as space allows) for map scales 1 :50,000
Streams and Canals or larger.
Transportation Date(s) aerial images were photographed: Apr 22, 2011—Oct 19,
+-4-t Rails 2011
ti Interstate Highways
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.
34
Custom Soil Resource Report
Table—Linear Extensibility
Linear Extensibility— Summary by Map Unit — Weld County, Colorado, Northern Part (CO617)
Map unit symbol Map unit name Rating (percent) Acres in AOI Percent of AOI
4 Ascalon fine sandy loam, 1 .5 21 .0 27.1 %
0 to 6 percent slopes
40 Nunn loam, 0 to 6 percent 4.7 3.0 3.9%
slopes
44 Olney fine sandy loam, 0 1 .5 21 .1 27.3%
to 6 percent slopes
54 Platner loam, 0 to 3 3.5 21 .6 27.9%
percent slopes
76 Wages fine sandy loam, 6 1 .5 10.7 13.9%
to 9 percent slopes
Totals for Area of Interest 77.5 100.0%
Rating Options—Linear Extensibility
Units of Measure: percent
Aggregation Method: Dominant Component
Component Percent Cutoff: None Specified
Tie-break Rule: Higher
Interpret Nulls as Zero: No
Layer Options (Horizon Aggregation Method): All Layers (Weighted Average)
35
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://soils.usda .gov/
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://soils. usda.gov/
Soil Survey Staff. 2006. Keys to soil taxonomy. 10th edition. U .S. Department of
Agriculture, Natural Resources Conservation Service. http://soils.usda.gov/
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://soils.usda.gov/
United States Department of Agriculture, Natural Resources Conservation Service.
National range and pasture handbook. http://www.glti .nrcs.usda.gov/
United States Department of Agriculture, Natural Resources Conservation Service.
National soil survey handbook, title 430-VI . http://soils.usda .gov/
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://soils.usda.gov/
36
Custom Soil Resource Report
United States Department of Agriculture, Soil Conservation Service. 1961 . Land
capability classification. U .S. Department of Agriculture Handbook 210.
37
USDA United States A product of the National Custom Soil Resource
Department of Cooperative Soil Survey,
Agriculture a joint effort of the United Report for
4 States Department of
\ RCS Agriculture and other VVe I d C o u n ty ,
Natural agencies including the Colorado Northern
Resources Agricultural Experiment '
Conservation Stations, and local
Service participants Part
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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://soils. usda .gov/sqi/) and certain
conservation and engineering applications. For more detailed information, contact
your local USDA Service Center (http://offices.sc.egov.usda .gov/locator/app?
agency=nrcs) or your NRCS State Soil Scientist (http://soils.usda.gov/contact/
state offices/).
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 Soil Data Mart Web site or the NRCS Web Soil Survey. The Soil
Data Mart is the data storage site for the 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 alternative means
2
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 (800) 795-3272
(voice) or (202) 720-6382 (TDD). USDA is an equal opportunity provider and
employer.
3
Contents
Preface 2
How Soil Surveys Are Made 6
Soil Map 8
Soil Map 9
Legend 10
Map Unit Legend 11
Map Unit Descriptions 12
Weld County, Colorado, Northern Part 14
4—Ascalon fine sandy loam, 0 to 6 percent slopes 14
5—Ascalon fine sandy loam, 6 to 9 percent slopes 15
9—Avar fine sandy loam 16
10—Avar-Manzanola complex, 0 to 3 percent slopes 17
11—Badland 19
17—Bushman fine sandy loam, 0 to 3 percent slopes 19
18—Bushman fine sandy loam, 3 to 9 percent slopes 20
20—Cascajo gravelly sandy loam, 5 to 20 percent slopes 21
27—Epping silt loam, 0 to 9 percent slopes 22
28—Haplaquolls-Fluvaquents complex, frequently flooded 23
29—Haverson loam, 0 to 3 percent slopes 25
30—Keith loam, 0 to 6 percent slopes 26
31—Kim-Mitchell complex, 0 to 6 percent slopes 27
32—Kim-Mitchell complex, 6 to 9 percent slopes 29
36—Manzanola clay loam, 0 to 3 percent slopes 30
37—Midway clay loam, 0 to 9 percent slopes 31
40—Nunn loam, 0 to 6 percent slopes 33
41 —Nunn clay loam, 0 to 6 percent slopes 34
44—Olney fine sandy loam, 0 to 6 percent slopes 35
45—Olney fine sandy loam, 6 to 9 percent slopes 36
46—Otero sandy loam, 0 to 3 percent slopes 37
47—Otero sandy loam, 3 to 9 percent slopes 38
51—Peetz gravelly sandy loam, 5 to 20 percent slopes 39
53—Peetz-Rock outcrop complex, 9 to 40 percent slopes 40
56—Renohill fine sandy loam, 6 to 9 percent slopes 42
57—Renohill-Shingle complex, 3 to 9 percent slopes 43
58—Rosebud fine sandy loam, 0 to 6 percent slopes 45
60-Shingle clay loam, 0 to 9 percent slopes 46
61—Stoneham fine sandy loam, 0 to 6 percent slopes 47
62—Stoneham fine sandy loam, 6 to 9 percent slopes 48
66—Thedalund-Keota loams, 0 to 3 percent slopes 49
67—Thedalund-Keota loams, 3 to 9 percent slopes 51
Soil Information for All Uses 53
Suitabilities and Limitations for Use 53
Building Site Development 53
Dwellings Without Basements 53
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Land Classifications 59
Farmland Classification 60
Soil Properties and Qualities 66
Soil Physical Properties 66
Linear Extensibility 66
References 71
5
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
scientists classified and named the soils in the survey area, they compared the
6
Custom Soil Resource Report
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
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
N Soil Map
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Map Scale: 1:151,000 if printed on A landscape (11" x 8.5") sheet.
Meters
N
0 2000 4000 8000 12000 c
Feet
A _
0 5000 10000 20000 30000
Map projection: Web Mercator Corner coordinates: WG584 Edge tics: UTM Zone 13N WG584
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Custom Soil Resource Report
MAP LEGEND MAP INFORMATION
Area of Interest (AOl) -# Spoil Area The soil surveys that comprise your AOI were mapped at 1 :24,000.
Area of Interest (AOl) Stony Spot
Please rely on the bar scale on each map sheet for map
Soils ;y, Very Stony Spot measurements.
Soil Map Unit Polygons
Wet Spot
••-‘-. Soil Map Unit Lines Source of Map: Natural Resources Conservation Service
Other Web Soil Survey URL: http://websoilsurvey.nres.usda.gov
Soil Map Unit Points Coordinate System: Web Mercator (EPSG:3857)
•- Special Line Features
Special Point Features
V Blowout Water Features Maps from the Web Soil Survey are based on the Web Mercator
Streams and Canals projection, which preserves direction and shape but distorts
!y4 Borrow Pit distance and area. A projection that preserves area, such as the
Transportation
X Clay Spot Albers equal-area conic projection, should be used if more accurate
4-F+ Rails calculations of distance or area are required.
0 Closed Depression
ti Interstate Highways
X Gravel Pit US Routes This product is generated from the USDA-NRCS certified data as of
the version date(s) listed below.
Gravelly Spot
•• Major Roads
Landfill Local Roads Soil Survey Area: Weld County, Colorado, Northern Part
Lava Flow Survey Area Data: Version 8, Apr 30, 2009
Background
4k, Marsh or swamp Aerial Photography Soil map units are labeled (as space allows) for map scales 1 :50,000
ft Mine or Quarry or larger.
® Miscellaneous Water Date(s) aerial images were photographed: Sep 30, 2010—Oct 19,
Q Perennial Water 2011
v Rock Outcrop The orthophoto or other base map on which the soil lines were
+ Saline Spot compiled and digitized probably differs from the background
imagery displayed on these maps. As a result, some minor shifting
Sandy Spot of map unit boundaries may be evident.
o Severely Eroded Spot
® Sinkhole
Slide or Slip
0o Sodic Spot
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Custom Soil Resource Report
Map Unit Legend
Weld County, Colorado, Northern Part (CO617)
Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI
4 Ascalon fine sandy loam, 0 to 6 88.5 10.0%
percent slopes
5 Ascalon fine sandy loam, 6 to 9 39.5 4.5%
percent slopes
9 Avar fine sandy loam 1 .4 0.2%
10 Avar-Manzanola complex, 0 to 3 27.5 3.1 %
percent slopes
11 Badland 31 .8 3.6%
17 Bushman fine sandy loam, 0 to 3 4.1 0.5%
percent slopes
18 Bushman fine sandy loam, 3 to 9 4.0 0.5%
percent slopes
20 Cascajo gravelly sandy loam, 5 13.3 1 .5%
to 20 percent slopes
27 Epping silt loam, 0 to 9 percent 95.8 10.9%
slopes
28 Haplaquolls-Fluvaquents 1 .3 0.1%
complex, frequently flooded
29 Haverson loam, 0 to 3 percent 23.8 2.7%
slopes
30 Keith loam, 0 to 6 percent slopes 32.7 3.7%
31 Kim-Mitchell complex, 0 to 6 234.7 26.6%
percent slopes
32 Kim-Mitchell complex, 6 to 9 14.9 1 .7%
percent slopes
36 Manzanola clay loam, 0 to 3 4.5 0.5%
percent slopes
37 Midway clay loam, 0 to 9 percent 16.7 1 .9%
slopes
40 Nunn loam, 0 to 6 percent slopes 32.5 3.7%
41 Nunn clay loam, 0 to 6 percent 16.9 1 .9%
slopes
44 Olney fine sandy loam, 0 to 6 44.5 5.0%
percent slopes
45 Olney fine sandy loam, 6 to 9 16.4 1 .9%
percent slopes
46 Otero sandy loam, 0 to 3 percent 4.9 0.6%
slopes
47 Otero sandy loam, 3 to 9 percent 23.0 2.6%
slopes
51 Peetz gravelly sandy loam, 5 to 33.7 3.8%
20 percent slopes
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Custom Soil Resource Report
Weld County, Colorado, Northern Part (CO617)
Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI
53 Peetz-Rock outcrop complex, 9 6.0 0.7%
to 40 percent slopes
56 Renohill fine sandy loam, 6 to 9 8.2 0.9%
percent slopes
57 Renohill-Shingle complex, 3 to 9 13.9 1 .6%
percent slopes
58 Rosebud fine sandy loam, 0 to 6 2. 1 0.2%
percent slopes
60 Shingle clay loam, 0 to 9 percent 33.9 3.8%
slopes
61 Stoneham fine sandy loam, 0 to 2.2 0.3%
6 percent slopes
62 Stoneham fine sandy loam, 6 to 3.2 0.4%
9 percent slopes
66 Thedalund-Keota loarns, 0 to 3 3.1 0.4%
percent slopes
67 Thedalund-Keota loarns, 3 to 9 3.4 0.4%
percent slopes
Totals for Area of Interest 882.5 100.0%
Map Unit Descriptions
The map units delineated on the detailed soil maps in a soil survey represent the soils
or miscellaneous areas in the survey area. The map unit descriptions, along with the
maps, can be used to determine the composition and properties of a unit.
A map unit delineation on a soil map represents an area dominated by one or more
major kinds of soil or miscellaneous areas. A map unit is identified and named
according to the taxonomic classification of the dominant soils. Within a taxonomic
class there are precisely defined limits for the properties of the soils. On the landscape,
however, the soils are natural phenomena, and they have the characteristic variability
of all natural phenomena. Thus, the range of some observed properties may extend
beyond the limits defined for a taxonomic class. Areas of soils of a single taxonomic
class rarely, if ever, can be mapped without including areas of other taxonomic
classes. Consequently, every map unit is made up of the soils or miscellaneous areas
for which it is named and some minor components that belong to taxonomic classes
other than those of the major soils.
Most minor soils have properties similar to those of the dominant soil or soils in the
map unit, and thus they do not affect use and management. These are called
noncontrasting , or similar, components. They may or may not be mentioned in a
particular map unit description. Other minor components, however, have properties
and behavioral characteristics divergent enough to affect use or to require different
management. These are called contrasting , or dissimilar, components. They generally
are in small areas and could not be mapped separately because of the scale used .
Some small areas of strongly contrasting soils or miscellaneous areas are identified
by a special symbol on the maps. If included in the database for a given area, the
contrasting minor components are identified in the map unit descriptions along with
some characteristics of each. A few areas of minor components may not have been
12
Custom Soil Resource Report
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.
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Custom Soil Resource Report
Weld County, Colorado, Northern Part
4—Ascalon fine sandy loam, 0 to 6 percent slopes
Map Unit Setting
Elevation: 4,500 to 6,500 feet
Mean annual precipitation: 13 to 17 inches
Mean annual air temperature: 46 to 57 degrees F
Frost-free period: 130 to 160 days
Map Unit Composition
Ascalon and similar soils: 85 percent
Minor components: 15 percent
Description of Ascalon
Setting
Landform: Plains
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Calcareous loamy alluvium
Properties and qualities
Slope: 0 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
(0.60 to 2.00 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Calcium carbonate, maximum content 10 percent
Maximum salinity: Nonsaline (0.0 to 2.0 mmhos/cm)
Available water capacity: Moderate (about 6.9 inches)
Interpretive groups
Farmland classification: Farmland of statewide importance
Land capability classification (irrigated): 3e
Land capability (nonirrigated): 3e
Hydrologic Soil Group: B
Ecological site: Loamy Plains (R067BY002CO)
Typical profile
0 to 8 inches: Fine sandy loam
8 to 22 inches: Sandy clay loam
22 to 60 inches: Sandy loam
Minor Components
Olney
Percent of map unit: 8 percent
Otero
Percent of map unit: 7 percent
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Custom Soil Resource Report
5—Ascalon fine sandy loam , 6 to 9 percent slopes
Map Unit Setting
Elevation: 4,500 to 6,500 feet
Mean annual precipitation: 13 to 17 inches
Mean annual air temperature: 46 to 57 degrees F
Frost-free period: 130 to 160 days
Map Unit Composition
Ascalon and similar soils: 85 percent
Minor components: 15 percent
Description of Ascalon
Setting
Landform: Plains
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Calcareous loamy alluvium
Properties and qualities
Slope: 6 to 9 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
(0.60 to 2.00 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Calcium carbonate, maximum content: 10 percent
Maximum salinity: Nonsaline (0.0 to 2.0 mmhos/cm)
Available water capacity: Moderate (about 6.8 inches)
Interpretive groups
Farmland classification: Not prime farmland
Land capability classification (irrigated): 4e
Land capability (nonirrigated): 4e
Hydrologic Soil Group: B
Ecological site: Loamy Plains (R067BY002CO)
Typical profile
0 to 6 inches: Fine sandy loam
6 to 21 inches: Sandy clay loam
21 to 60 inches: Sandy loam
Minor Components
Altvan
Percent of map unit: 7 percent
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Custom Soil Resource Report
Peetz
Percent of map unit 4 percent
Cascajo
Percent of map unit: 3 percent
Aquic haplustolls
Percent of map unit: 1 percent
Landform: Swales
9—Avar fine sandy loam
Map Unit Setting
Elevation: 4,500 to 5,500 feet
Mean annual precipitation: 11 to 14 inches
Mean annual air temperature: 46 to 48 degrees F
Frost-free period: 130 to 160 days
Map Unit Composition
Avar and similar soils: 80 percent
Minor components: 20 percent
Description of Avar
Setting
Landform: Flood plains, stream terraces, swales
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Calcareous loamy alluvium
Properties and qualities
Slope: 0 to 3 percent
Depth to restrictive feature: More than 80 inches
Drainage class: Well drained
Capacity of the most limiting layer to transmit water (Ksat): Moderately low to
moderately high (0.06 to 0.60 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Calcium carbonate, maximum content: 15 percent
Maximum salinity: Very slightly saline to strongly saline (4.0 to 32.0 mmhos/cm)
Sodium adsorption ratio, maximum: 250.0
Available water capacity: Moderate (about 6.6 inches)
Interpretive groups
Farmland classification: Not prime farmland
Land capability (nonirrigated): 7s
Hydrologic Soil Group: D
Ecological site: Salt Flat (R067XY033CO)
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Custom Soil Resource Report
Typical profile
0 to 3 inches: Fine sandy loam
3 to 8 inches: Clay loam
8 to 60 inches: Sandy clay loam
Minor Components
Fluvaquentic haplustolls
Percent of map unit: 6 percent
Landform: Terraces
Ascalon
Percent of map unit: 5 percent
Haverson
Percent of map unit 4 percent
Nunn
Percent of map unit 3 percent
Bankard
Percent of map unit 2 percent
10—Avar-Manzanola complex, 0 to 3 percent slopes
Map Unit Setting
Elevation: 4,400 to 5,600 feet
Mean annual precipitation: 11 to 15 inches
Mean annual air temperature: 46 to 52 degrees F
Frost-free period: 130 to 180 days
Map Unit Composition
Avar and similar soils: 45 percent
Manzanola and similar soils: 40 percent
Minor components: 15 percent
Description of Avar
Setting
Landform: Swales
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Calcareous loamy alluvium
Properties and qualities
Slope: 0 to 3 percent
Depth to restrictive feature: More than 80 inches
Drainage class: Well drained
Capacity of the most limiting layer to transmit water (Ksat): Moderately low to
moderately high (0.06 to 0.60 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
17
Custom Soil Resource Report
Frequency of ponding: None
Calcium carbonate, maximum content: 15 percent
Maximum salinity: Very slightly saline to strongly saline (4.0 to 32.0 mmhos/cm)
Sodium adsorption ratio, maximum: 250.0
Available water capacity: Moderate (about 6.6 inches)
Interpretive groups
Farmland classification: Not prime farmland
Land capability (nonirrigated): 7s
Hydrologic Soil Group: D
Ecological site: Salt Flat (R067XY033CO)
Typical profile
0 to 3 inches: Fine sandy loam
3 to 8 inches: Clay loam
8 to 60 inches: Sandy clay loam
Description of Manzanola
Setting
Landform: Swales
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Calcareous clayey alluvium
Properties and qualities
Slope: 0 to 3 percent
Depth to restrictive feature: More than 80 inches
Drainage class: Well drained
Capacity of the most limiting layer to transmit water (Ksat): Very low to moderately
high (0.00 to 0.20 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Calcium carbonate, maximum content 5 percent
Gypsum, maximum content: 3 percent
Maximum salinity: Nonsaline to slightly saline (0.0 to 8.0 mmhos/cm)
Sodium adsorption ratio, maximum: 15.0
Available water capacity: High (about 9.6 inches)
Interpretive groups
Farmland classification: Not prime farmland
Land capability (nonirrigated): 4e
Hydrologic Soil Group: C
Ecological site: Clayey Plains (R067BY042CO)
Typical profile
0 to 3 inches: Clay loam
3 to 18 inches: Clay
18 to 48 inches: Clay
48 to 60 inches: Clay loam
Minor Components
Heldt
Percent of map unit: 8 percent
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Custom Soil Resource Report
Mollic halaquepts
Percent of map unit 7 percent
Landform: Swales
11 —Badland
Map Unit Composition
Badland: 80 percent
Minor components: 20 percent
Description of Badland
Setting
Landform: Channels
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Soft claystone and/or calcareous, soft sandstone and siltstone
Minor Components
Other soils
Percent of map unit 6 percent
Kim
Percent of map unit 5 percent
Mitchell
Percent of map unit 5 percent
Thedalund
Percent of map unit 2 percent
Keota
Percent of map unit 2 percent
17—Bushman fine sandy loam , 0 to 3 percent slopes
Map Unit Setting
Elevation: 5,000 to 6,000 feet
Mean annual precipitation: 11 to 15 inches
Mean annual air temperature: 45 to 46 degrees F
Frost-free period: 130 to 160 days
Map Unit Composition
Bushman and similar soils: 90 percent
Minor components: 10 percent
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Custom Soil Resource Report
Description of Bushman
Setting
Landform: Alluvial fans
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Calcareous loamy alluvium
Properties and qualities
Slope: 0 to 3 percent
Depth to restrictive feature: More than 80 inches
Drainage class: Well drained
Capacity of the most limiting layer to transmit water (Ksat): High (2.00 to 6.00 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Calcium carbonate, maximum content: 15 percent
Maximum salinity: Nonsaline to very slightly saline (0.0 to 4.0 mmhos/cm)
Available water capacity: Moderate (about 8.4 inches)
Interpretive groups
Farmland classification: Farmland of statewide importance
Land capability classification (irrigated): 2e
Land capability (nonirrigated): 4e
Hydrologic Soil Group: B
Ecological site: Sandy Plains (R067BY024CO)
Typical profile
0 to 10 inches: Fine sandy loam
10 to 60 inches: Sandy loam
Minor Components
Wages
Percent of map unit: 10 percent
18—Bushman fine sandy loam , 3 to 9 percent slopes
Map Unit Setting
Elevation: 5,000 to 6,000 feet
Mean annual precipitation: 11 to 15 inches
Mean annual air temperature: 45 to 46 degrees F
Frost-free period: 130 to 160 days
Map Unit Composition
Bushman and similar soils: 90 percent
Minor components: 10 percent
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Custom Soil Resource Report
Description of Bushman
Setting
Landform: Fans, alluvial fans
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Calcareous loamy alluvium and/or colluvium
Properties and qualities
Slope: 3 to 9 percent
Depth to restrictive feature: More than 80 inches
Drainage class: Well drained
Capacity of the most limiting layer to transmit water (Ksat): High (2.00 to 6.00 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Calcium carbonate, maximum content: 15 percent
Maximum salinity: Nonsaline to very slightly saline (0.0 to 4.0 mmhos/cm)
Available water capacity: Moderate (about 8.4 inches)
Interpretive groups
Farmland classification: Not prime farmland
Land capability classification (irrigated): 4e
Land capability (nonirrigated): 6e
Hydrologic Soil Group: B
Ecological site: Sandy Plains (R067BY024CO)
Typical profile
0 to 6 inches: Fine sandy loam
6 to 60 inches: Sandy loam
Minor Components
Wages
Percent of map unit: 6 percent
Cushman
Percent of map unit 4 percent
20—Cascajo gravelly sandy loam , 5 to 20 percent slopes
Map Unit Setting
Elevation: 4,000 to 5,000 feet
Mean annual precipitation: 11 to 13 inches
Mean annual air temperature: 52 to 54 degrees F
Frost-free period: 120 to 160 days
Map Unit Composition
Cascajo and similar soils: 85 percent
Minor components: 15 percent
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Custom Soil Resource Report
Description of Cascajo
Setting
Landform: Breaks, ridges
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Calcareous gravelly alluvium
Properties and qualities
Slope: 5 to 20 percent
Depth to restrictive feature: More than 80 inches
Drainage class: Excessively drained
Capacity of the most limiting layer to transmit water (Ksat): High (2.00 to 6.00 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Calcium carbonate, maximum content: 25 percent
Maximum salinity: Nonsaline (0.0 to 2.0 mmhos/cm)
Available water capacity: Low (about 3.9 inches)
Interpretive groups
Farmland classification: Not prime farmland
Land capability (nonirrigated): 7s
Hydrologic Soil Group: A
Ecological site: Gravel Breaks (R067BY063CO)
Typical profile
0 to 3 inches: Gravelly sandy loam
3 to 24 inches: Very gravelly loamy sand
24 to 60 inches: Very gravelly sand
Minor Components
Stoneham
Percent of map unit: 14 percent
Otero
Percent of map unit 1 percent
27—Epping silt loam , 0 to 9 percent slopes
Map Unit Setting
Elevation: 3,600 to 5,500 feet
Mean annual precipitation: 12 to 17 inches
Mean annual air temperature: 45 to 52 degrees F
Frost-free period: 120 to 150 days
Map Unit Composition
Epping and similar soils: 85 percent
Minor components: 15 percent
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Custom Soil Resource Report
Description of Epping
Setting
Landform: Plains
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Calcareous loamy residuum weathered from siltstone
Properties and qualities
Slope: 0 to 9 percent
Depth to restrictive feature: 10 to 20 inches to paralithic bedrock
Drainage class: Well drained
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
Calcium carbonate, maximum content: 15 percent
Available water capacity: Very low (about 2.9 inches)
Interpretive groups
Farmland classification: Not prime farmland
Land capability (nonirrigated): 6s
Hydrologic Soil Group: D
Ecological site: Shallow Siltstone (R067BY039CO)
Typical profile
0 to 3 inches: Silt loam
3 to 17 inches: Silt loam
17 to 20 inches: Weathered bedrock
Minor Components
Keota
Percent of map unit: 5 percent
Thedalund
Percent of map unit 4 percent
Mitchell
Percent of map unit: 3 percent
Kim
Percent of map unit: 3 percent
28—Haplaquolls-Fluvaquents complex, frequently flooded
Map Unit Setting
Elevation: 3,500 to 7,200 feet
Mean annual precipitation: 11 to 18 inches
Mean annual air temperature: 45 to 52 degrees F
Frost-free period: 80 to 165 days
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Custom Soil Resource Report
Map Unit Composition
Fluvaquents, frequently flooded, and similar soils: 45 percent
Haplaquolls, frequently flooded, and similar soils: 45 percent
Minor components: 10 percent
Description of Haplaquolls, Frequently Flooded
Setting
Landform: Drainageways, depressions, plains, flood plains
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Mottled , calcareous alluvium
Properties and qualities
Slope: 0 to 2 percent
Depth to restrictive feature: More than 80 inches
Drainage class: Very poorly drained
Capacity of the most limiting layer to transmit water (Ksat): Moderately low to high
(0.06 to 6.00 in/hr)
Depth to water table: About 0 inches
Frequency of flooding: FrequentNone
Frequency of ponding: None
Calcium carbonate, maximum content: 10 percent
Available water capacity: Moderate (about 6.8 inches)
Interpretive groups
Farmland classification: Not prime farmland
Land capability classification (irrigated): 6w
Land capability (nonirrigated): 6w
Hydrologic Soil Group: D
Ecological site: Wet Meadow (R067BY038CO)
Typical profile
0 to 8 inches: Variable
8 to 60 inches: Stratified loamy sand to clay loam
Description of Fluvaquents, Frequently Flooded
Setting
Landform: Plains, depressions, drainageways, flood plains
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Mottled , calcareous alluvium
Properties and qualities
Slope: 0 to 2 percent
Depth to restrictive feature: More than 80 inches
Drainage class: Somewhat poorly drained
Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high
(0.57 to 2.00 in/hr)
Depth to water table: About 6 to 24 inches
Frequency of flooding: FrequentNone
Frequency of ponding: None
Calcium carbonate, maximum content: 10 percent
Maximum salinity: Nonsaline to slightly saline (0.0 to 8.0 mmhos/cm)
Available water capacity: Low (about 5.7 inches)
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Custom Soil Resource Report
Interpretive groups
Farmland classification: Not prime farmland
Land capability classification (irrigated): 6w
Land capability (nonirrigated): 6w
Hydrologic Soil Group: D
Ecological site: Salt Meadow (R067BY035CO)
Typical profile
0 to 10 inches: Variable
10 to 24 inches: Gravelly sand
24 to 60 inches: Gravelly sand
Minor Components
Haverson
Percent of map unit: 5 percent
Other soils
Percent of map unit 5 percent
29—Haverson loam, 0 to 3 percent slopes
Map Unit Setting
Elevation: 3,500 to 6,000 feet
Mean annual precipitation: 12 to 17 inches
Mean annual air temperature: 46 to 54 degrees F
Frost-free period: 125 to 180 days
Map Unit Composition
Haverson and similar soils: 90 percent
Minor components: 10 percent
Description of Haverson
Setting
Landform: Flood plains, stream terraces
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Stratified , calcareous loamy alluvium
Properties and qualities
Slope: 0 to 3 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 2.00 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Calcium carbonate, maximum content: 15 percent
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Custom Soil Resource Report
Gypsum, maximum content: 1 percent
Maximum salinity: Nonsaline to slightly saline (0.0 to 8.0 mmhos/cm)
Available water capacity: High (about 9.6 inches)
Interpretive groups
Farmland classification: Prime farmland if irrigated and either protected from flooding
or not frequently flooded during the growing season
Land capability (nonirrigated): 4c
Hydrologic Soil Group: B
Ecological site: Overflow (R067BY036CO)
Other vegetative classification: OVERFLOW (067BY036CO)
Typical profile
0 to 12 inches: Loam
12 to 60 inches: Stratified sandy loam to loam
Minor Components
Nunn
Percent of map unit: 6 percent
Fluvaquentic haplustolls
Percent of map unit 4 percent
Landform: Terraces
30—Keith loam, 0 to 6 percent slopes
Map Unit Setting
Elevation: 5,000 to 6,000 feet
Mean annual precipitation: 15 to 17 inches
Mean annual air temperature: 46 to 48 degrees F
Frost-free period: 120 to 150 days
Map Unit Composition
Keith and similar soils: 83 percent
Minor components: 17 percent
Description of Keith
Setting
Landform: Swales, stream terraces, plains
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Calcareous loamy alluvium
Properties and qualities
Slope: 0 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 5.95 in/hr)
Depth to water table: More than 80 inches
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Custom Soil Resource Report
Frequency of flooding: None
Frequency of ponding: None
Calcium carbonate, maximum content 10 percent
Available water capacity: High (about 10.7 inches)
Interpretive groups
Farmland classification: Prime farmland if irrigated
Land capability (nonirrigated): 4e
Hydrologic Soil Group: B
Ecological site: Loamy Plains (R067BY002CO)
Typical profile
0 to 4 inches: Loam
4 to 20 inches: Silt loam
20 to 60 inches: Silt loam
Minor Components
Weld
Percent of map unit 8 percent
Wages
Percent of map unit 4 percent
Kim
Percent of map unit 3 percent
Mitchell
Percent of map unit 2 percent
31 —Kim-Mitchell complex, 0 to 6 percent slopes
Map Unit Setting
Elevation: 3,500 to 6,500 feet
Mean annual precipitation: 11 to 17 inches
Mean annual air temperature: 46 to 54 degrees F
Frost-free period: 120 to 160 days
Map Unit Composition
Kim and similar soils: 45 percent
Mitchell and similar soils: 40 percent
Minor components: 15 percent
Description of Kim
Setting
Landform: Plains, alluvial fans
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Calcareous loamy alluvium
Properties and qualities
Slope: 0 to 6 percent
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Custom Soil Resource Report
Depth to restrictive feature: More than 80 inches
Drainage class: Well drained
Capacity of the most limiting layer to transmit water (Ksat): Moderately high (0.20 to
0.60 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Calcium carbonate, maximum content: 15 percent
Maximum salinity: Nonsaline to very slightly saline (0.0 to 4.0 mmhos/cm)
Available water capacity: High (about 9.7 inches)
Interpretive groups
Farmland classification: Farmland of statewide importance
Land capability classification (irrigated): 4e
Land capability (nonirrigated): 4e
Hydrologic Soil Group: B
Ecological site: Loamy Plains (R067BY002CO)
Typical profile
0 to 3 inches: Loam
3 to 7 inches: Clay loam
7 to 60 inches: Loam
Description of Mitchell
Setting
Landform: Alluvial fans, plains
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Calcareous loamy alluvium
Properties and qualities
Slope: 0 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 5.95 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Calcium carbonate, maximum content 15 percent
Available water capacity: High (about 10.8 inches)
Interpretive groups
Farmland classification: Farmland of statewide importance
Land capability classification (irrigated): 4e
Land capability (nonirrigated): 4e
Hydrologic Soil Group: B
Ecological site: Siltstone Plains (R067BY009CO)
Typical profile
0 to 7 inches: Silt loam
7 to 60 inches: Silt loam
Minor Components
Haverson
Percent of map unit 5 percent
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Custom Soil Resource Report
Thedalund
Percent of map unit 5 percent
Keota
Percent of map unit: 5 percent
32—Kim-Mitchell complex, 6 to 9 percent slopes
Map Unit Setting
Elevation: 3,500 to 6,500 feet
Mean annual precipitation: 11 to 17 inches
Mean annual air temperature: 46 to 54 degrees F
Frost-free period: 120 to 160 days
Map Unit Composition
Kim and similar soils: 45 percent
Mitchell and similar soils: 35 percent
Minor components: 20 percent
Description of Kim
Setting
Landform: Plains, fans, alluvial fans
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Calcareous loamy alluvium and/or colluvium
Properties and qualities
Slope: 6 to 9 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 (0.20 to
0.60 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Calcium carbonate, maximum content: 15 percent
Maximum salinity: Nonsaline to very slightly saline (0.0 to 4.0 mmhos/cm)
Available water capacity: High (about 9.7 inches)
Interpretive groups
Farmland classification: Not prime farmland
Land capability classification (irrigated): 6e
Land capability (nonirrigated): 6e
Hydrologic Soil Group: B
Ecological site: Loamy Plains (R067BY002CO)
Typical profile
0 to 3 inches: Loam
3 to 7 inches: Clay loam
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Custom Soil Resource Report
7 to 60 inches: Loam
Description of Mitchell
Setting
Landform: Plains, alluvial fans, fans
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Calcareous loamy alluvium
Properties and qualities
Slope: 6 to 9 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 5.95 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Calcium carbonate, maximum content: 15 percent
Available water capacity: High (about 10.8 inches)
Interpretive groups
Farmland classification: Not prime farmland
Land capability classification (irrigated): 6e
Land capability (nonirrigated): 6e
Hydrologic Soil Group: B
Ecological site: Siltstone Plains (R067BY009CO)
Typical profile
0 to 7 inches: Silt loam
7 to 60 inches: Silt loam
Minor Components
Keota
Percent of map unit: 7 percent
Thedalund
Percent of map unit 7 percent
Haverson
Percent of map unit: 6 percent
36—Manzanola clay loam , 0 to 3 percent slopes
Map Unit Setting
Elevation: 4,400 to 5,600 feet
Mean annual precipitation: 11 to 15 inches
Mean annual air temperature: 46 to 52 degrees F
Frost-free period: 140 to 180 days
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Custom Soil Resource Report
Map Unit Composition
Manzanola and similar soils: 85 percent
Minor components: 15 percent
Description of Manzanola
Setting
Landform: Swales, plains, stream terraces
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Calcareous clayey alluvium
Properties and qualities
Slope: 0 to 3 percent
Depth to restrictive feature: More than 80 inches
Drainage class: Well drained
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
Calcium carbonate, maximum content: 5 percent
Gypsum, maximum content: 3 percent
Maximum salinity: Nonsaline to slightly saline (0.0 to 8.0 mmhos/cm)
Sodium adsorption ratio, maximum: 15.0
Available water capacity: High (about 9.6 inches)
Interpretive groups
Farmland classification: Farmland of statewide importance
Land capability (nonirrigated): 4e
Hydrologic Soil Group: C
Ecological site: Clayey Plains (R067BY042CO)
Typical profile
0 to 3 inches: Clay loam
3 to 25 inches: Clay
25 to 48 inches: Clay
48 to 60 inches: Clay loam
Minor Components
Avar
Percent of map unit 15 percent
37—Midway clay loam , 0 to 9 percent slopes
Map Unit Setting
Elevation: 3,500 to 6,000 feet
Mean annual precipitation: 10 to 17 inches
Mean annual air temperature: 46 to 52 degrees F
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Custom Soil Resource Report
Frost-free period: 100 to 180 days
Map Unit Composition
Midway and similar soils: 80 percent
Minor components: 20 percent
Description of Midway
Setting
Landform: Breaks, plains, ridges
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Calcareous clayey residuum weathered from shale
Properties and qualities
Slope: 0 to 9 percent
Depth to restrictive feature: 6 to 20 inches to paralithic bedrock
Drainage class: Well drained
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
Calcium carbonate, maximum content: 15 percent
Gypsum, maximum content: 15 percent
Maximum salinity: Nonsaline to slightly saline (2.0 to 8.0 mmhos/cm)
Sodium adsorption ratio, maximum: 15.0
Available water capacity: Very low (about 1 .9 inches)
Interpretive groups
Farmland classification: Not prime farmland
Land capability classification (irrigated): 6e
Land capability (nonirrigated): 6e
Hydrologic Soil Group: D
Ecological site: Shaly Plains (R067BY045CO)
Typical profile
0 to 3 inches: Clay loam
3 to 11 inches: Clay
11 to 15 inches: Weathered bedrock
Minor Components
Renohill
Percent of map unit: 9 percent
Stoneham
Percent of map unit: 6 percent
Terry
Percent of map unit 5 percent
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Custom Soil Resource Report
40—Nunn loam , 0 to 6 percent slopes
Map Unit Setting
Elevation: 4,500 to 6,700 feet
Mean annual precipitation: 12 to 18 inches
Mean annual air temperature: 46 to 54 degrees F
Frost-free period: 115 to 180 days
Map Unit Composition
Nunn and similar soils: 85 percent
Minor components: 15 percent
Description of Nunn
Setting
Landform: Plains, stream terraces
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Calcareous loamy alluvium
Properties and qualities
Slope: 0 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 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
Calcium carbonate, maximum content: 15 percent
Maximum salinity: Nonsaline (0.0 to 2.0 mmhos/cm)
Available water capacity: Moderate (about 9.0 inches)
Interpretive groups
Farmland classification: Prime farmland if irrigated
Land capability (nonirrigated): 4c
Hydrologic Soil Group: C
Ecological site: Loamy Plains (R067BY002CO)
Typical profile
0 to 7 inches: Loam
7 to 23 inches: Clay loam
23 to 60 inches: Clay loam
60 to 64 inches: Sandy clay loam
Minor Components
Manzanola
Percent of map unit: 8 percent
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Custom Soil Resource Report
Avar
Percent of map unit 7 percent
41 —Nunn clay loam, 0 to 6 percent slopes
Map Unit Setting
Elevation: 4,500 to 6,700 feet
Mean annual precipitation: 12 to 18 inches
Mean annual air temperature: 46 to 54 degrees F
Frost-free period: 115 to 180 days
Map Unit Composition
Nunn and similar soils: 85 percent
Minor components: 15 percent
Description of Nunn
Setting
Landform: Stream terraces, plains
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Calcareous loamy alluvium
Properties and qualities
Slope: 0 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 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
Calcium carbonate, maximum content: 15 percent
Maximum salinity: Nonsaline (0.0 to 2.0 mmhos/cm)
Available water capacity: High (about 9.2 inches)
Interpretive groups
Farmland classification: Prime farmland if irrigated
Land capability classification (irrigated): 3e
Land capability (nonirrigated): 4e
Hydrologic Soil Group: C
Ecological site: Loamy Plains (R067BY002CO)
Typical profile
0 to 8 inches: Clay loam
8 to 22 inches: Clay loam
22 to 60 inches: Clay loam
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Custom Soil Resource Report
Minor Components
Avar
Percent of map unit: 8 percent
Manzanola
Percent of map unit 7 percent
44—Olney fine sandy loam, 0 to 6 percent slopes
Map Unit Setting
Elevation: 3,500 to 5,800 feet
Mean annual precipitation: 11 to 15 inches
Mean annual air temperature: 46 to 54 degrees F
Frost-free period: 125 to 175 days
Map Unit Composition
Olney and similar soils: 85 percent
Minor components: 15 percent
Description of Olney
Setting
Landform: Plains
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Calcareous loamy alluvium
Properties and qualities
Slope: 0 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 2.00 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Calcium carbonate, maximum content: 15 percent
Maximum salinity: Nonsaline (0.0 to 2.0 mmhos/cm)
Available water capacity: Moderate (about 8. 1 inches)
Interpretive groups
Farmland classification: Farmland of statewide importance
Land capability (nonirrigated): 4c
Hydrologic Soil Group: B
Ecological site: Loamy Plains (R067BY002CO)
Typical profile
0 to 6 inches: Fine sandy loam
6 to 18 inches: Sandy clay loam
18 to 60 inches: Sandy loam
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Custom Soil Resource Report
60 to 64 inches: Sandy loam
Minor Components
Stoneham
Percent of map unit 9 percent
Ascalon
Percent of map unit 6 percent
45—Olney fine sandy loam, 6 to 9 percent slopes
Map Unit Setting
Elevation: 3,500 to 5,800 feet
Mean annual precipitation: 11 to 15 inches
Mean annual air temperature: 46 to 54 degrees F
Frost-free period: 125 to 175 days
Map Unit Composition
Olney and similar soils: 85 percent
Minor components: 15 percent
Description of Olney
Setting
Landform: Plains
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Calcareous loamy alluvium
Properties and qualities
Slope: 6 to 9 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 2.00 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Calcium carbonate, maximum content: 15 percent
Maximum salinity: Nonsaline (0.0 to 2.0 mmhos/cm)
Available water capacity: Moderate (about 8. 1 inches)
Interpretive groups
Farmland classification: Not prime farmland
Land capability (nonirrigated): 6e
Hydrologic Soil Group: B
Ecological site: Loamy Plains (R067BY002CO)
Typical profile
0 to 6 inches: Fine sandy loam
6 to 18 inches: Sandy clay loam
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Custom Soil Resource Report
18 to 60 inches: Sandy loam
60 to 64 inches: Sandy loam
Minor Components
Vona
Percent of map unit: 5 percent
Ascalon
Percent of map unit 5 percent
Stoneham
Percent of map unit 5 percent
46—Otero sandy loam, 0 to 3 percent slopes
Map Unit Setting
Elevation: 4,500 to 5,500 feet
Mean annual precipitation: 12 to 15 inches
Mean annual air temperature: 48 to 52 degrees F
Frost-free period: 130 to 180 days
Map Unit Composition
Otero and similar soils: 85 percent
Minor components: 15 percent
Description of Otero
Setting
Landform: Alluvial fans, plains
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Calcareous loamy alluvium
Properties and qualities
Slope: 0 to 3 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 5.95 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Calcium carbonate, maximum content: 10 percent
Maximum salinity: Nonsaline to very slightly saline (0.0 to 4.0 mmhos/cm)
Available water capacity: Very high (about 14.8 inches)
Interpretive groups
Farmland classification: Not prime farmland
Land capability (nonirrigated): 4e
Hydrologic Soil Group: B
Ecological site: Sandy Plains (R067BY024CO)
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Custom Soil Resource Report
Typical profile
0 to 5 inches: Sandy loam
5 to 60 inches: Fine sandy loam, sandy loam
Minor Components
Stoneham
Percent of map unit: 5 percent
Bushman
Percent of map unit: 4 percent
Kim
Percent of map unit 3 percent
Mitchell
Percent of map unit: 3 percent
47—Otero sandy loam , 3 to 9 percent slopes
Map Unit Setting
Elevation: 4,500 to 5,500 feet
Mean annual precipitation: 12 to 15 inches
Mean annual air temperature: 48 to 52 degrees F
Frost-free period: 130 to 180 days
Map Unit Composition
Otero and similar soils: 85 percent
Minor components: 15 percent
Description of Otero
Setting
Landform: Fans, plains
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Calcareous loamy alluvium and/or colluvium
Properties and qualities
Slope: 3 to 9 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 5.95 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Calcium carbonate, maximum content: 10 percent
Maximum salinity: Nonsaline to very slightly saline (0.0 to 4.0 mmhos/cm)
Available water capacity: Very high (about 14.8 inches)
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Custom Soil Resource Report
Interpretive groups
Farmland classification: Not prime farmland
Land capability (nonirrigated): 6e
Hydrologic Soil Group: B
Ecological site: Sandy Plains (R067BY024CO)
Typical profile
0 to 5 inches: Sandy loam
5 to 60 inches: Fine sandy loam, sandy loam
Minor Components
Stoneham
Percent of map unit: 7 percent
Kim
Percent of map unit 3 percent
Bushman
Percent of map unit 3 percent
Mitchell
Percent of map unit 2 percent
51 —Peetz gravelly sandy loam , 5 to 20 percent slopes
Map Unit Setting
Elevation: 3,500 to 6,500 feet
Mean annual precipitation: 15 to 19 inches
Mean annual air temperature: 48 to 50 degrees F
Frost-free period: 120 to 150 days
Map Unit Composition
Peetz and similar soils: 80 percent
Minor components: 20 percent
Description of Peetz
Setting
Landform: Breaks, ridges
Landform position (two-dimensional): Backslope, shoulder
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Calcareous gravelly alluvium
Properties and qualities
Slope: 5 to 20 percent
Depth to restrictive feature: More than 80 inches
Drainage class: Somewhat excessively drained
Capacity of the most limiting layer to transmit water (Ksat): High (2.00 to 6.00 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
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Custom Soil Resource Report
Frequency of ponding: None
Calcium carbonate, maximum content: 20 percent
Available water capacity: Low (about 3. 1 inches)
Interpretive groups
Farmland classification: Not prime farmland
Land capability classification (irrigated): 6e
Land capability (nonirrigated): 6e
Hydrologic Soil Group: A
Ecological site: Gravel Breaks (R067BY063CO)
Typical profile
0 to 4 inches: Gravelly sandy loam
4 to 60 inches: Very gravelly sand
Minor Components
Wages
Percent of map unit: 10 percent
Altvan
Percent of map unit: 5 percent
Ascalon
Percent of map unit: 3 percent
Bushman
Percent of map unit 2 percent
53—Peetz-Rock outcrop complex, 9 to 40 percent slopes
Map Unit Setting
Elevation: 3,500 to 6,500 feet
Mean annual precipitation: 15 to 19 inches
Mean annual air temperature: 48 to 50 degrees F
Frost-free period: 120 to 150 days
Map Unit Composition
Peetz and similar soils: 40 percent
Rock outcrop: 30 percent
Minor components: 30 percent
Description of Peetz
Setting
Landform: Breaks, escarpments
Landform position (two-dimensional): Shoulder
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Calcareous gravelly alluvium
Properties and qualities
Slope: 9 to 30 percent
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Custom Soil Resource Report
Depth to restrictive feature: More than 80 inches
Drainage class: Somewhat excessively drained
Capacity of the most limiting layer to transmit water (Ksat): High (2.00 to 6.00 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Calcium carbonate, maximum content: 20 percent
Available water capacity: Low (about 3. 1 inches)
Interpretive groups
Farmland classification: Not prime farmland
Land capability (nonirrigated): 6e
Hydrologic Soil Group: A
Ecological site: Gravel Breaks (R067BY063CO)
Typical profile
0 to 4 inches: Gravelly sandy loam
4 to 60 inches: Very gravelly sand
Description of Rock Outcrop
Setting
Landform: Escarpments, fans
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Sandstone
Properties and qualities
Slope: 9 to 40 percent
Depth to restrictive feature: 0 inches to lithic bedrock
Capacity of the most limiting layer to transmit water (Ksat): Very low to moderately
low (0.00 to 0.06 in/hr)
Available water capacity: Very low (about 0.0 inches)
Interpretive groups
Farmland classification: Not prime farmland
Land capability (nonirrigated): 8s
Hydrologic Soil Group: D
Typical profile
0 to 60 inches: Unweathered bedrock
Minor Components
Otero
Percent of map unit: 7 percent
Treon
Percent of map unit 5 percent
Tassel
Percent of map unit 5 percent
Altvan
Percent of map unit 5 percent
Bushman
Percent of map unit 5 percent
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Custom Soil Resource Report
Paoli
Percent of map unit 3 percent
56—Renohill fine sandy loam , 6 to 9 percent slopes
Map Unit Setting
Elevation: 3,600 to 6,200 feet
Mean annual precipitation: 11 to 16 inches
Mean annual air temperature: 46 to 48 degrees F
Frost-free period: 100 to 160 days
Map Unit Composition
Renohill and similar soils: 85 percent
Minor components: 15 percent
Description of Renohill
Setting
Landform: Plains
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Calcareous, clayey loamy residuum weathered from shale
Properties and qualities
Slope: 6 to 9 percent
Depth to restrictive feature: 20 to 40 inches to paralithic bedrock
Drainage class: Well drained
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
Calcium carbonate, maximum content: 15 percent
Maximum salinity: Nonsaline (0.0 to 2.0 mmhos/cm)
Available water capacity: Low (about 5.0 inches)
Interpretive groups
Farmland classification: Not prime farmland
Land capability (nonirrigated): 6e
Hydrologic Soil Group: C
Ecological site: Loamy Plains (R067BY002CO)
Typical profile
0 to 4 inches: Fine sandy loam
4 to 17 inches: Clay
17 to 29 inches: Clay loam
29 to 33 inches: Unweathered bedrock
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Custom Soil Resource Report
Minor Components
Platner
Percent of map unit: 5 percent
Midway
Percent of map unit 5 percent
Other soils
Percent of map unit: 3 percent
Ulm
Percent of map unit: 2 percent
57—Renohill-Shingle complex, 3 to 9 percent slopes
Map Unit Setting
Elevation: 3,600 to 6,200 feet
Mean annual precipitation: 10 to 16 inches
Mean annual air temperature: 46 to 48 degrees F
Frost-free period: 100 to 160 days
Map Unit Composition
Renohill and similar soils: 50 percent
Shingle and similar soils: 35 percent
Minor components: 15 percent
Description of Renohill
Setting
Landform: Ridges, plains, breaks
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Calcareous, clayey loamy residuum weathered from shale
Properties and qualities
Slope: 3 to 9 percent
Depth to restrictive feature: 20 to 40 inches to paralithic bedrock
Drainage class: Well drained
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
Calcium carbonate, maximum content: 15 percent
Maximum salinity: Nonsaline (0.0 to 2.0 mmhos/cm)
Available water capacity: Low (about 5.0 inches)
Interpretive groups
Farmland classification: Not prime farmland
Land capability (nonirrigated): 4e
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Custom Soil Resource Report
Hydrologic Soil Group: C
Ecological site: Loamy Plains (R067BY002CO)
Typical profile
0 to 4 inches: Fine sandy loam
4 to 13 inches: Clay
13 to 29 inches: Clay loam
29 to 33 inches: Unweathered bedrock
Description of Shingle
Setting
Landform: Ridges, breaks, plains
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Calcareous loamy residuum weathered from shale
Properties and qualities
Slope: 3 to 9 percent
Depth to restrictive feature: 10 to 20 inches to paralithic bedrock
Drainage class: Well drained
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
Calcium carbonate, maximum content: 15 percent
Maximum salinity: Nonsaline (0.0 to 2.0 mmhos/cm)
Available water capacity: Very low (about 2. 1 inches)
Interpretive groups
Farmland classification: Not prime farmland
Land capability classification (irrigated): 6s
Land capability (nonirrigated): 6s
Hydrologic Soil Group: D
Ecological site: Shaly Plains (R067BY045CO)
Typical profile
0 to 4 inches: Clay loam
4 to 11 inches: Clay loam
11 to 15 inches: Unweathered bedrock
Minor Components
Midway
Percent of map unit 8 percent
Tassel
Percent of map unit: 7 percent
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Custom Soil Resource Report
58—Rosebud fine sandy loam, 0 to 6 percent slopes
Map Unit Setting
Elevation: 2,500 to 5,500 feet
Mean annual precipitation: 14 to 19 inches
Mean annual air temperature: 46 to 57 degrees F
Frost-free period: 120 to 150 days
Map Unit Composition
Rosebud and similar soils: 85 percent
Minor components: 15 percent
Description of Rosebud
Setting
Landform: Plains
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Calcareous loamy residuum weathered from sandstone
Properties and qualities
Slope: 0 to 6 percent
Depth to restrictive feature: 20 to 40 inches to paralithic bedrock
Drainage class: Well drained
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
Calcium carbonate, maximum content: 15 percent
Maximum salinity: Nonsaline (0.0 to 2.0 mmhos/cm)
Sodium adsorption ratio, maximum: 10.0
Available water capacity: Low (about 5.9 inches)
Interpretive groups
Farmland classification: Farmland of statewide importance
Land capability (nonirrigated): 4e
Hydrologic Soil Group: B
Ecological site: Loamy Plains (R067BY002CO)
Typical profile
0 to 5 inches: Fine sandy loam
5 to 10 inches: Clay loam
10 to 19 inches: Clay loam
19 to 24 inches: Sandy clay loam
24 to 38 inches: Sandy loam
38 to 41 inches: Weathered bedrock
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Custom Soil Resource Report
Minor Components
Ascalon
Percent of map unit: 9 percent
Platner
Percent of map unit 6 percent
60-Shingle clay loam , 0 to 9 percent slopes
Map Unit Setting
Elevation: 3,600 to 5,500 feet
Mean annual precipitation: 10 to 13 inches
Mean annual air temperature: 46 to 48 degrees F
Frost-free period: 110 to 140 days
Map Unit Composition
Shingle and similar soils: 80 percent
Minor components: 20 percent
Description of Shingle
Setting
Landform: Breaks, ridges, plains
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Calcareous, clayey loamy residuum weathered from shale
Properties and qualities
Slope: 0 to 9 percent
Depth to restrictive feature: 10 to 20 inches to paralithic bedrock
Drainage class: Well drained
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
Calcium carbonate, maximum content: 15 percent
Maximum salinity: Nonsaline (0.0 to 2.0 mmhos/cm)
Available water capacity: Very low (about 2. 1 inches)
Interpretive groups
Farmland classification: Not prime farmland
Land capability (nonirrigated): 6s
Hydrologic Soil Group: D
Ecological site: Shaly Plains (R067BY045CO)
Typical profile
0 to 4 inches: Clay loam
4 to 11 inches: Clay loam
11 to 15 inches: Unweathered bedrock
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Custom Soil Resource Report
Minor Components
Renohill
Percent of map unit: 10 percent
Thedalund
Percent of map unit 5 percent
Keota
Percent of map unit: 5 percent
61 -Stoneham fine sandy loam, 0 to 6 percent slopes
Map Unit Setting
Elevation: 4,000 to 6,500 feet
Mean annual precipitation: 12 to 16 inches
Mean annual air temperature: 48 to 52 degrees F
Frost-free period: 130 to 170 days
Map Unit Composition
Stoneham and similar soils: 90 percent
Minor components: 10 percent
Description of Stoneham
Setting
Landform: Alluvial fans, plains
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Calcareous loamy alluvium
Properties and qualities
Slope: 0 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
(0.60 to 2.00 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Calcium carbonate, maximum content: 15 percent
Maximum salinity: Nonsaline (0.0 to 2.0 mmhos/cm)
Available water capacity: High (about 11 .2 inches)
Interpretive groups
Farmland classification: Farmland of statewide importance
Land capability classification (irrigated): 4e
Land capability (nonirrigated): 4e
Hydrologic Soil Group: B
Ecological site: Loamy Plains (R067BY002CO)
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Custom Soil Resource Report
Typical profile
0 to 5 inches: Fine sandy loam
5 to 8 inches: Clay loam
8 to 14 inches: Loam
14 to 60 inches: Sandy loam, gravelly sandy loam
Minor Components
Mitchell
Percent of map unit 5 percent
Kim
Percent of map unit 5 percent
62-Stoneham fine sandy loam, 6 to 9 percent slopes
Map Unit Setting
Elevation: 4,000 to 6,500 feet
Mean annual precipitation: 12 to 16 inches
Mean annual air temperature: 48 to 52 degrees F
Frost-free period: 130 to 170 days
Map Unit Composition
Stoneham and similar soils: 85 percent
Minor components: 15 percent
Description of Stoneham
Setting
Landform: Plains
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Calcareous loamy alluvium
Properties and qualities
Slope: 6 to 9 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
(0.60 to 2.00 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Calcium carbonate, maximum content: 15 percent
Maximum salinity: Nonsaline (0.0 to 2.0 mmhos/cm)
Available water capacity: High (about 11 .2 inches)
Interpretive groups
Farmland classification: Not prime farmland
Land capability classification (irrigated): 6e
Land capability (nonirrigated): 6e
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Custom Soil Resource Report
Hydrologic Soil Group: B
Ecological site: Loamy Plains (R067BY002CO)
Typical profile
0 to 5 inches: Fine sandy loam
5 to 8 inches: Clay loam
8 to 14 inches: Loam
14 to 60 inches: Sandy loam, gravelly sandy loam
Minor Components
Otero
Percent of map unit 5 percent
Mitchell
Percent of map unit 5 percent
Kim
Percent of map unit: 5 percent
66—Thedalund-Keota loarns, 0 to 3 percent slopes
Map Unit Setting
Elevation: 3,500 to 6,500 feet
Mean annual precipitation: 13 to 17 inches
Mean annual air temperature: 46 to 48 degrees F
Frost-free period: 130 to 160 days
Map Unit Composition
Thedalund and similar soils: 45 percent
Keota and similar soils: 30 percent
Minor components: 25 percent
Description of Thedalund
Setting
Landform: Ridges, alluvial fans, plains
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Calcareous loamy residuum weathered from sandstone and shale
and/or residuum weathered from siltstone
Properties and qualities
Slope: 0 to 3 percent
Depth to restrictive feature: 20 to 40 inches to paralithic bedrock
Drainage class: Well drained
Capacity of the most limiting layer to transmit water (Ksat): Moderately low to high
(0.06 to 2.00 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Calcium carbonate, maximum content 15 percent
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Custom Soil Resource Report
Maximum salinity: Nonsaline to slightly saline (0.0 to 8.0 mmhos/cm)
Available water capacity: Low (about 4.3 inches)
Interpretive groups
Farmland classification: Not prime farmland
Land capability classification (irrigated): 4s
Land capability (nonirrigated): 4e
Hydrologic Soil Group: C
Ecological site: Loamy Plains (R067BY002CO)
Typical profile
0 to 3 inches: Loam
3 to 25 inches: Loam
25 to 29 inches: Weathered bedrock
Description of Keota
Setting
Landform: Alluvial fans, plains, ridges
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Calcareous loamy residuum weathered from siltstone
Properties and qualities
Slope: 0 to 3 percent
Depth to restrictive feature: 20 to 40 inches to paralithic bedrock
Drainage class: Well drained
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
Calcium carbonate, maximum content: 10 percent
Maximum salinity: Nonsaline (0.0 to 2.0 mmhos/cm)
Available water capacity: Low (about 5.3 inches)
Interpretive groups
Farmland classification: Not prime farmland
Land capability classification (irrigated): 4s
Land capability (nonirrigated): 4e
Hydrologic Soil Group: B
Ecological site: Siltstone Plains (R067BY009CO)
Typical profile
0 to 4 inches: Loam
4 to 35 inches: Silt loam
35 to 39 inches: Unweathered bedrock
Minor Components
Epping
Percent of map unit: 10 percent
Shingle
Percent of map unit: 5 percent
Mitchell
Percent of map unit 5 percent
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Custom Soil Resource Report
Kim
Percent of map unit 5 percent
67—Thedalund-Keota loams, 3 to 9 percent slopes
Map Unit Setting
Elevation: 3,500 to 6,500 feet
Mean annual precipitation: 13 to 17 inches
Mean annual air temperature: 46 to 48 degrees F
Frost-free period: 130 to 160 days
Map Unit Composition
Thedalund and similar soils: 45 percent
Keota and similar soils: 30 percent
Minor components: 25 percent
Description of Thedalund
Setting
Landform: Plains, ridges, alluvial fans
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Residuum weathered from siltstone and/or calcareous loamy
residuum weathered from sandstone and shale
Properties and qualities
Slope: 3 to 9 percent
Depth to restrictive feature: 20 to 40 inches to paralithic bedrock
Drainage class: Well drained
Capacity of the most limiting layer to transmit water (Ksat): Moderately low to high
(0.06 to 2.00 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Calcium carbonate, maximum content 15 percent
Maximum salinity: Nonsaline to slightly saline (0.0 to 8.0 mmhos/cm)
Available water capacity: Low (about 4. 1 inches)
Interpretive groups
Farmland classification: Not prime farmland
Land capability classification (irrigated): 4e
Land capability (nonirrigated): 6e
Hydrologic Soil Group: C
Ecological site: Loamy Plains (R067BY002CO)
Typical profile
0 to 3 inches: Loam
3 to 24 inches: Loam
24 to 28 inches: Weathered bedrock
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Custom Soil Resource Report
Description of Keota
Setting
Landform: Alluvial fans, ridges, plains
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Calcareous loamy residuum weathered from siltstone
Properties and qualities
Slope: 3 to 9 percent
Depth to restrictive feature: 20 to 40 inches to paralithic bedrock
Drainage class: Well drained
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
Calcium carbonate, maximum content: 10 percent
Maximum salinity: Nonsaline (0.0 to 2.0 mmhos/cm)
Available water capacity: Low (about 5.3 inches)
Interpretive groups
Farmland classification: Not prime farmland
Land capability classification (irrigated): 4e
Land capability (nonirrigated): 6e
Hydrologic Soil Group: B
Ecological site: Siltstone Plains (R067BY009CO)
Typical profile
0 to 4 inches: Loam
4 to 35 inches: Silt loam
35 to 39 inches: Unweathered bedrock
Minor Components
Epping
Percent of map unit: 10 percent
Shingle
Percent of map unit: 5 percent
Mitchell
Percent of map unit: 5 percent
Kim
Percent of map unit 5 percent
52
Soil Information for All Uses
Suitabilities and Limitations for Use
The Suitabilities and Limitations for Use section includes various soil interpretations
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 interpretation.
Building Site Development
Building site development interpretations are designed to be used as tools for
evaluating soil suitability and identifying soil limitations for various construction
purposes. As part of the interpretation process, the rating applies to each soil in its
described condition and does not consider present land use. Example interpretations
can include corrosion of concrete and steel, shallow excavations, dwellings with and
without basements, small commercial buildings, local roads and streets, and lawns
and landscaping.
Dwellings Without Basements
Dwellings are single-family houses of three stories or less. For dwellings without
basements, the foundation is assumed to consist of spread footings of reinforced
concrete built on undisturbed soil at a depth of 2 feet or at the depth of maximum frost
penetration, whichever is deeper.
The ratings for dwellings are based on the soil properties that affect the capacity of
the soil to support a load without movement and on the properties that affect
excavation and construction costs. The properties that affect the load-supporting
capacity include depth to a water table, ponding, flooding, subsidence, linear
extensibility (shrink-swell potential), and compressibility. Compressibility is inferred
from the Unified classification of the soil. The properties that affect the ease and
amount of excavation include depth to a water table, ponding, flooding, slope, depth
to bedrock or a cemented pan, hardness of bedrock or a cemented pan, and the
amount and size of rock fragments.
The ratings are both verbal and numerical . Rating class terms indicate the extent to
which the soils are limited by all of the soil features that affect the specified use. "Not
53
Custom Soil Resource Report
limited" indicates that the soil has features that are very favorable for the specified
use. Good performance and very low maintenance can be expected . "Somewhat
limited" indicates that the soil has features that are moderately favorable for the
specified use. The limitations can be overcome or minimized by special planning,
design, or installation . Fair performance and moderate maintenance can be expected.
"Very limited" indicates that the soil has one or more features that are unfavorable for
the specified use. The limitations generally cannot be overcome without major soil
reclamation, special design, or expensive installation procedures. Poor performance
and high maintenance can be expected.
Numerical ratings indicate the severity of individual limitations. The ratings are shown
as decimal fractions ranging from 0.01 to 1 .00. They indicate gradations between the
point at which a soil feature has the greatest negative impact on the use ( 1 .00) and
the point at which the soil feature is not a limitation (0.00).
The map unit components listed for each map unit in the accompanying Summary by
Map Unit table in Web Soil Survey or the Aggregation Report in Soil Data Viewer are
determined by the aggregation method chosen . An aggregated rating class is shown
for each map unit. The components listed for each map unit are only those that have
the same rating class as listed for the map unit. The percent composition of each
component in a particular map unit is presented to help the user better understand the
percentage of each map unit that has the rating presented.
Other components with different ratings may be present in each map unit. The ratings
for all components, regardless of the map unit aggregated rating, can be viewed by
generating the equivalent report from the Soil Reports tab in Web Soil Survey or from
the Soil Data Mart site. Onsite investigation may be needed to validate these
interpretations and to confirm the identity of the soil on a given site.
54
Custom Soil Resource Report
N Map—Dwellings Without Basements
in
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564000 567000 570000 573000 576000 579000 582000 585000 588000 591000 594000
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V
564000 567000 570000 573000 576000 579000 582000 585000 588000 591000 594000
3 3 ri
11) Map Scale: 1:151,000 if printed on A landscape (11" x 8.5") sheet.
in
Meters
N
0 2000 4000 8000 12000 c
Feet
A _
0 5000 10000 20000 30000
Map projection: Web Mercator Corner coordinates: WG584 Edge tics: UTM Zone 13N WG584
55
Custom Soil Resource Report
MAP LEGEND MAP INFORMATION
Area of Interest (AOl) Background The soil surveys that comprise your AOI were mapped at 1 :24,000.
Area of Interest (AOI) Aerial Photography
Please rely on the bar scale on each map sheet for map
Soils
measurements.
Soil Rating Polygons
al Very limited Source of Map: Natural Resources Conservation Service
Somewhat limited Web Soil Survey URL: http://websoilsurvey.nres.usda.gov
Coordinate System: Web Mercator (EPSG:3857)
Not limited
Not rated or not available Maps from the Web Soil Survey are based on the Web Mercator
projection, which preserves direction and shape but distorts
Soil Rating Lines distance and area. A projection that preserves area, such as the
a.• Very limited Albers equal-area conic projection, should be used if more accurate
Somewhat limited calculations of distance or area are required.
,01..• Not limited This product is generated from the USDA-NRCS certified data as of
• • Not rated or not available the version date(s) listed below.
Soil Rating Points Soil Survey Area: Weld County, Colorado, Northern Part
Very limited Survey Area Data: Version 8, Apr 30, 2009
C Somewhat limited
Soil map units are labeled (as space allows) for map scales 1 :50,000
Not limited or larger.
Not rated or not available
Date(s) aerial images were photographed: Sep 30, 2010—Oct 19,
Water Features 2011
Streams and Canals
Transportation The orthophoto or other base map on which the soil lines were
*4-+ Rails compiled and digitized probably differs from the background
imagery displayed on these maps. As a result, some minor shifting
ago Interstate Highways of map unit boundaries may be evident.
US Routes
Major Roads
Local Roads
56
Custom Soil Resource Report
Tables—Dwellings Without Basements
Dwellings Without Basements— Summary by Map Unit — Weld County, Colorado, Northern Part (CO617)
Map unit symbol Map unit name Rating Component Rating reasons Acres in AOI Percent of AOI
name (percent) (numeric values)
4 Ascalon fine Not limited Ascalon (85%) 88.5 10.0%
sandy loam, 0
to 6 percent
slopes
5 Ascalon fine Somewhat limited Ascalon (85%) Slope (0.00) 39.5 4.5%
sandy loam, 6
to 9 percent
slopes
9 Avar fine sandy Not limited Avar (80%) 1 .4 0.2%
loam
10 Avar-Manzanola Not limited Avar (45%) 27.5 3.1 %
complex, 0 to 3
percent slopes
11 Badland Not rated Badland (80%) 31 .8 3.6%
Other soils (6%)
Kim (5%)
Mitchell (5%)
Thedalund (2%)
Keota (2%)
17 Bushman fine Not limited Bushman (90%) 4.1 0.5%
sandy loam, 0
to 3 percent
slopes
18 Bushman fine Not limited Bushman (90%) 4.0 0.5%
sandy loam, 3
to 9 percent
slopes
20 Cascajo gravelly Somewhat limited Cascajo (85%) Slope (0.84) 13.3 1 .5%
sandy loam, 5
to 20 percent
slopes
27 Epping silt loam, Somewhat limited Epping (85%) Depth to soft 95.8 10.9%
0 to 9 percent bedrock (0.50)
slopes
28 Haplaquolls- Very limited Haplaquolls, Flooding (1 .00) 1 .3 0.1 %
Fluvaquents Frequently
complex, Flooded (45%) Depth to
frequently saturated zone
flooded (1 .00)
Ponding (1 .00)
Fluvaquents, Flooding (1 .00)
Frequently
Flooded (45%) Depth to
saturated zone
(1 .00)
29 Haverson loam, 0 Not limited Haverson (90%) 23.8 2.7%
to 3 percent
slopes
57
Custom Soil Resource Report
Dwellings Without Basements— Summary by Map Unit — Weld County, Colorado, Northern Part (CO617)
Map unit symbol Map unit name Rating Component Rating reasons Acres in AOI Percent of AOI
name (percent) (numeric values)
30 Keith loam, 0 to 6 Not limited Keith (83%) 32.7 3.7%
percent slopes
31 Kim-Mitchell Not limited Kim (45%) 234.7 26.6%
complex, 0 to 6 Mitchell (40%)
percent slopes
32 Kim-Mitchell Somewhat limited Kim (45%) Slope (0.00) 14.9 1 .7%
complex, 6 to 9
percent slopes Mitchell (35%) Slope (0.00)
36 Manzanola clay Very limited Manzanola (85%) Shrink-swell 4.5 0.5%
loam, 0 to 3 (1 .00)
percent slopes
37 Midway clay Very limited Midway (80%) Shrink-swell 16.7 1 .9%
loam, 0 to 9 (1 .00)
percent slopes
Depth to soft
bedrock (0.50)
40 Nunn loam, 0 to 6 Somewhat limited Nunn (85%) Shrink-swell 32.5 3.7%
percent slopes (0.50)
41 Nunn clay loam, 0 Somewhat limited Nunn (85%) Shrink-swell 16.9 1 .9%
to 6 percent (0.50)
slopes
44 Olney fine sandy Not limited Olney (85%) 44.5 5.0%
loam, 0 to 6
percent slopes
45 Olney fine sandy Somewhat limited Olney (85%) Slope (0.00) 16.4 1 .9%
loam, 6 to 9
percent slopes
46 Otero sandy Not limited Otero (85%) 4.9 0.6%
loam, 0 to 3
percent slopes
47 Otero sandy Not limited Otero (85%) 23.0 2.6%
loam, 3 to 9
percent slopes
51 Peetz gravelly Somewhat limited Peetz (80%) Slope (0.84) 33.7 3.8%
sandy loam, 5
to 20 percent
slopes
53 Peetz-Rock Not rated Rock outcrop 6.0 0.7%
outcrop (30%)
complex, 9 to
40 percent Otero (7%)
slopes Bushman (5%)
Treon (5%)
Tassel (5%)
Altvan (5%)
Paoli (3%)
56 Renohill fine Somewhat limited Renohill (85%) Slope (0.00) 8.2 0.9%
sandy loam, 6
to 9 percent
slopes
58
Custom Soil Resource Report
Dwellings Without Basements— Summary by Map Unit — Weld County, Colorado, Northern Part (CO617)
Map unit symbol Map unit name Rating Component Rating reasons Acres in AOI Percent of AOI
name (percent) (numeric values)
57 Renohill-Shingle Not limited Renohill (50%) 13.9 1 .6%
complex, 3 to 9
percent slopes
58 Rosebud fine Not limited Rosebud (85%) 2.1 0.2%
sandy loam, 0
to 6 percent
slopes
60 Shingle clay Somewhat limited Shingle (80%) Shrink-swell 33.9 3.8%
loam, 0 to 9 (0.50)
percent slopes
Depth to soft
bedrock (0.50)
61 Stoneham fine Not limited Stoneham (90%) 2.2 0.3%
sandy loam, 0
to 6 percent
slopes
62 Stoneham fine Somewhat limited Stoneham (85%) Slope (0.00) 3.2 0.4%
sandy loam, 6
to 9 percent
slopes
66 Thedalund-Keota Somewhat limited Thedalund (45%) Shrink-swell 3.1 0.4%
loams, 0 to 3 (0.50)
percent slopes
67 Thedalund-Keota Somewhat limited Thedalund (45%) Shrink-swell 3.4 0.4%
loams, 3 to 9 (0.50)
percent slopes
Totals for Area of Interest 882.5 100.0%
Dwellings Without Basements— Summary by Rating Value
Rating Acres in AOI Percent of AOI
Not limited 507.2 ' 57.5%
Somewhat limited 314.8 35.7%
Very limited 22.6 2.6%
Null or Not Rated 37.9 4.3%
Totals for Area of Interest 882.5 100.0%
Rating Options—Dwellings Without Basements
Aggregation Method: Dominant Condition
Component Percent Cutoff: None Specified
Tie-break Rule: Higher
Land Classifications
Land Classifications are specified land use and management groupings that are
assigned to soil areas because combinations of soil have similar behavior for specified
59
Custom Soil Resource Report
practices. Most are based on soil properties and other factors that directly influence
the specific use of the soil. Example classifications include ecological site
classification, farmland classification , irrigated and nonirrigated land capability
classification, and hydric rating.
Farmland Classification
Farmland classification identifies map units as prime farmland, farmland of statewide
importance, farmland of local importance, or unique farmland . It identifies the location
and extent of the soils that are best suited to food, feed, fiber, forage, and oilseed
crops. NRCS policy and procedures on prime and unique farmlands are published in
the "Federal Register," Vol. 43, No. 21 , January 31 , 1978.
60
Custom Soil Resource Report
N Map—Farmland Classification
in
rno
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3 3 Ill Map Scale: 1:151,000 if printed on A landscape (11" x 8.5") sheet.
ri in
Meters
N
0 2000 4000 8000 12000 c
Feet
A _
0 5000 10000 20000 30000
Map projection: Web Mercator Corner coordinates: WGSS4 Edge tics: UTM Zone 13N WG584
61
Custom Soil Resource Report
MAP LEGEND
Area of Interest (AOl) M Prime farmland if • • Prime farmland if ,rr• Prime farmland if irrigated . Prime farmland if
Area of Interest (AOI) subsoiled, completely protected from flooding or and reclaimed of excess irrigated and drained
removing the root not frequently flooded salts and sodium O Prime farmland if
Soils inhibiting soil layer during the growing season • • Farmland of statewide irrigated and either
Soil Rating Polygons . Prime farmland if irrigated • • Prime farmland if irrigated importance protected from flooding
0 Not prime farmland and the product of I (soil ,s,,r Farmland of local or not frequently flooded
erodibility) x C (climate • • Prime farmland if drained during the growing
does not exceed 60 and either protected from importance
factor) season
All areas are prime flooding or not frequently 42,..• Farmland of unique
farmland IIMI Prime farmland if irrigated D Prime farmland if
ooded
M Prime farmland if drained and reclaimed of excess season during the growing importancesubsoiled, completely
salts and sodium • • Not rated or not available removing the root
Prime farmland if Farmland of statewide .ti, • Prime farmland if irrigated inhibiting soil layer
Soil Rating Points
importance
protected from flooding or and drained ® Prime farmland if
not frequently flooded • • Prime farmland if irrigated Not prime farmland
q Y 9 irrigated and the product
during the growing season Farmland of local and either protected from of I (soil erodibility) x C
importance flooding or not frequently ® All areas are prime
Prime farmland if irrigated farmland (climate factor) does not
. Farmland of unique flooded during the growing exceed 60
M Prime farmland if drained importance season 0 Prime farmland if drained
In Prime farmland if
and either protected from M Not rated or not available • • Prime farmland if Prime farmland if irrigated and reclaimed of
flooding or not frequently subsoiled, completely 0 protected from flooding or excess salts and sodium
flooded during the growing Soil Rating Lines removing the root not frequently flooded O Farmland of statewide
season ,s,•► Not prime farmland inhibiting soil layer Y during the growing season importance
MI Prime farmland if irrigated ,a.v• Prime farmland if irri ated
and drained Asa. All areas are prime g D Prime farmland if irrigated Farmland of local
farmland and the product of I (soil importance
M Prime farmland if irrigated erodibility) x C (climate O Prime farmland if drained
and either protected from • • Prime farmland if drained factor) does not exceed 60 and either protected from if Farmland of unique
flooding or not frequently flooding or not frequently importance
flooded during the growing flooded during the growing D Not rated or not available
season season
Water Features
62
Custom Soil Resource Report
MAP INFORMATION
Streams and Canals The soil surveys that comprise your AOI were mapped at 1 :24,000.
Transportation
Please rely on the bar scale on each map sheet for map
Rails
measurements.
0.,i Interstate Highways
US Routes Source of Map: Natural Resources Conservation Service
Web Soil Survey URL: http://websoilsurvey.nrcs.usda.gov
Major Roads Coordinate System: Web Mercator (EPSG:3857)
Local Roads
Maps from the Web Soil Survey are based on the Web Mercator
Background projection, which preserves direction and shape but distorts
Aerial Photography 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: Weld County, Colorado, Northern Part
Survey Area Data: Version 8, Apr 30, 2009
Soil map units are labeled (as space allows) for map scales 1 :50,000
or larger.
Date(s) aerial images were photographed: Sep 30, 2010—Oct 19,
2011
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.
63
Custom Soil Resource Report
Table—Farmland Classification
Farmland Classification— Summary by Map Unit — Weld County, Colorado, Northern Part (CO617)
Map unit symbol Map unit name Rating Acres in AOI Percent of AOI
4 Ascalon fine sandy loam, Farmland of statewide 88.5 10.0%
0 to 6 percent slopes importance
5 Ascalon fine sandy loam, Not prime farmland 39.5 4.5%
6 to 9 percent slopes
9 Avar fine sandy loam Not prime farmland 1 .4 0.2%
10 Avar-Manzanola Not prime farmland 27.5 3.1%
complex, 0 to 3 percent
slopes
11 Badland Not prime farmland 31 .8 3.6%
17 Bushman fine sandy Farmland of statewide 4.1 0.5%
loam, 0 to 3 percent importance
slopes
18 Bushman fine sandy Not prime farmland 4.0 0.5%
loam, 3 to 9 percent
slopes
20 Cascajo gravelly sandy Not prime farmland 13.3 1 .5%
loam, 5 to 20 percent
slopes
27 Epping silt loam, 0 to 9 Not prime farmland 95.8 10.9%
percent slopes I
28 Haplaquolls-Fluvaquents Not prime farmland 1 .3 0.1%
complex, frequently
flooded
29 Haverson loam, 0 to 3 Prime farmland if irrigated 23.8 2.7%
percent slopes and either protected
from flooding or not
frequently flooded
during the growing
season
30 Keith loam, 0 to 6 percent Prime farmland if irrigated 32.7 3.7%
slopes
31 Kim-Mitchell complex, 0 Farmland of statewide 234.7 26.6%
to 6 percent slopes importance
32 Kim-Mitchell complex, 6 Not prime farmland I 14.9 1 .7%
to 9 percent slopes
36 Manzanola clay loam, 0 to Farmland of statewide 4.5 0.5%
3 percent slopes importance
37 Midway clay loam, 0 to 9 Not prime farmland 16.7 1 .9%
percent slopes
40 Nunn loam, 0 to 6 percent Prime farmland if irrigated 32.5 3.7%
slopes
41 Nunn clay loam, 0 to 6 Prime farmland if irrigated 16.9 1 .9%
percent slopes
44 Olney fine sandy loam, 0 Farmland of statewide I 44.5 5.0%
to 6 percent slopes importance
45 Olney fine sandy loam, 6 Not prime farmland 16.4 1 .9%
to 9 percent slopes
64
Custom Soil Resource Report
Farmland Classification— Summary by Map Unit — Weld County, Colorado, Northern Part (C0617)
Map unit symbol Map unit name Rating Acres in A0I Percent of A0I
46 Otero sandy loam, 0 to 3 Not prime farmland 4.9 0.6%
percent slopes I
47 Otero sandy loam, 3 to 9 Not prime farmland I 23.0 2.6%
percent slopes I
51 Peetz gravelly sandy Not prime farmland 33.7 3.8%
loam, 5 to 20 percent
slopes
53 Peetz-Rock outcrop Not prime farmland 6.0 0.7%
complex, 9 to 40
percent slopes
56 Renohill fine sandy loam, Not prime farmland 8.2 I 0.9%
6 to 9 percent slopes
57 Renohill-Shingle Not prime farmland 13.9 1 .6%
complex, 3 to 9 percent
slopes
58 Rosebud fine sandy loam, Farmland of statewide 2.1 0.2%
0 to 6 percent slopes importance
60 Shingle clay loam, 0 to 9 Not prime farmland 33.9 3.8%
percent slopes
61 Stoneham fine sandy Farmland of statewide 2.2 0.3%
loam, 0 to 6 percent importance
slopes
62 Stoneham fine sandy Not prime farmland 3.2 0.4%
loam, 6 to 9 percent
slopes
66 Thedalund-Keota loams, Not prime farmland 3. 1 0.4%
0 to 3 percent slopes
67 Thedalund-Keota loams, Not prime farmland 3.4 0.4%
3 to 9 percent slopes
Totals for Area of Interest 882.5 100.0%
Rating Options—Farmland Classification
Aggregation Method: No Aggregation Necessary
Tie-break Rule: Lower
65
Custom Soil Resource Report
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 Physical Properties
Soil Physical Properties are measured or inferred from direct observations in the field
or laboratory. Examples of soil physical properties include percent clay, organic
matter, saturated hydraulic conductivity, available water capacity, and bulk density.
Linear Extensibility
Linear extensibility refers to the change in length of an unconfined clod as moisture
content is decreased from a moist to a dry state. It is an expression of the volume
change between the water content of the clod at 1 /3- or 1 /10-bar tension (33kPa or
10kPa tension) and oven dryness. The volume change is reported as percent change
for the whole soil. The amount and type of clay minerals in the soil influence volume
change.
For each soil layer, this attribute is actually recorded as three separate values in the
database. A low value and a high value indicate the range of this attribute for the soil
component. A "representative" value indicates the expected value of this attribute for
the component. For this soil property, only the representative value is used.
66
Custom Soil Resource Report
N Map—Linear Extensibility
Ul
°
Es
o
564000 567000 570000 573000 576000 Y/9000 582000 585000 588000 591000 594000
40° 53'23"N 40° 53'23"N
Nv
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— 40,I • .
40 41'50"N .ct — I 40 41'50"N
V
564000 567000 570000 573000 576000 579000 582000 585000 588000 591000 594000
3 3
in Map Scale: 1:151,000 if printed on A landscape (11" x 8.5") sheet.
R,
Meters
$ N 0 2000 4000 8000 12000 0
Feet
0 5000 10000 20000 30000
Map projection: Web Mercator Comer coordinates: WGS84 Edge tics: UTM Zone 13N WGS84
67
Custom Soil Resource Report
MAP LEGEND MAP INFORMATION
Area of Interest (AOl) US Routes The soil surveys that comprise your AOI were mapped at 1 :24,000.
Area of Interest (AOI) Major Roads
Please rely on the bar scale on each map sheet for map
Soils Local Roads measurements.
Soil Rating Polygons
El Low (0 - 3) Background
Aerial Photography Source of Map: Natural Resources Conservation Service
Moderate (3 - 6) Web Soil Survey URL: http://websoilsurvey.nres.usda.gov
Coordinate System: Web Mercator (EPSG:3857)
High (6 - 9)
11. Very High (9 - 30) Maps from the Web Soil Survey are based on the Web Mercator
projection, which preserves direction and shape but distorts
Not rated or not available distance and area. A projection that preserves area, such as the
Soil Rating Lines Albers equal-area conic projection, should be used if more accurate
,.•v Low (0 - 3) calculations of distance or area are required.
• • Moderate (3 - 6) This product is generated from the USDA-NRCS certified data as of
• • High (6 - 9) the version date(s) listed below.
,•y Very High (9 - 30) Soil Survey Area: Weld County, Colorado, Northern Part
• • Not rated or not available Survey Area Data: Version 8, Apr 30, 2009
Soil Rating Points Soil map units are labeled (as space allows) for map scales 1 :50,000
Low (0 - 3)
or larger.
Moderate (3 - 6)
Date(s) aerial images were photographed: Sep 30, 2010—Oct 19,
O High (6 - 9) 2011
Very High (9 - 30)
p Not rated or not available The orthophoto or other base map on which the soil lines were
compiled and digitized probably differs from the background
Water Features imagery displayed on these maps. As a result, some minor shifting
Streams and Canals of map unit boundaries may be evident.
Transportation
+-4-f Rails
ti Interstate Highways
68
Custom Soil Resource Report
Table—Linear Extensibility
Linear Extensibility— Summary by Map Unit — Weld County, Colorado, Northern Part (CO617)
Map unit symbol Map unit name Rating (percent) Acres in AOI Percent of AOI
4 Ascalon fine sandy loam, 1 .5 88.5 10.0%
0 to 6 percent slopes
5 Ascalon fine sandy loam, 1 .5 39.5 4.5%
6 to 9 percent slopes
9 Avar fine sandy loam 2.0 1 .4 0.2%
10 Avar-Manzanola 2.0 27.5 3.1 %
complex, 0 to 3 percent
slopes
11 Badland 31 .8 3.6%
17 Bushman fine sandy 1 .5 4.1 0.5%
loam, 0 to 3 percent
slopes
18 Bushman fine sandy 1 .5 4.0 0.5%
loam, 3 to 9 percent
slopes
20 Cascajo gravelly sandy 1 .5 13.3 1 .5%
loam, 5 to 20 percent
slopes
27 Epping silt loam, 0 to 9 1 .5 95.8 10.9%
percent slopes
28 Haplaquolls-Fluvaquents 1 .5 1 .3 0.1 %
complex, frequently
flooded
29 Haverson loam, 0 to 3 1 .5 23.8 2.7%
percent slopes
30 Keith loam, 0 to 6 percent 1 .5 32.7 3.7%
slopes
31 Kim-Mitchell complex, 0 1 .5 234.7 26.6%
to 6 percent slopes
32 Kim-Mitchell complex, 6 1 .5 14.9 1 .7%
to 9 percent slopes
36 Manzanola clay loam, 0 to 6.8 4.5 0.5%
3 percent slopes
37 Midway clay loam, 0 to 9 6.6 16.7 1 .9%
percent slopes
40 Nunn loam, 0 to 6 percent 4.7 32.5 3.7%
slopes
41 Nunn clay loam, 0 to 6 5.2 16.9 1 .9%
percent slopes
44 Olney fine sandy loam, 0 1 .5 44.5 5.0%
to 6 percent slopes
45 Olney fine sandy loam, 6 1 .5 16.4 1 .9%
to 9 percent slopes
46 Otero sandy loam, 0 to 3 1 .5 4.9 0.6%
percent slopes
69
Custom Soil Resource Report
Linear Extensibility— Summary by Map Unit — Weld County, Colorado, Northern Part (CO617)
Map unit symbol Map unit name Rating (percent) Acres in AOI Percent of AOI
47 Otero sandy loam, 3 to 9 1 .5 23.0 2.6%
percent slopes
51 Peetz gravelly sandy 1 .5 33.7 3.8%
loam, 5 to 20 percent
slopes
53 Peetz-Rock outcrop 1 .5 6.0 0.7%
complex, 9 to 40
percent slopes
56 Renohill fine sandy loam, 4.2 8.2 0.9%
6 to 9 percent slopes
57 Renohill-Shingle 3.4 13.9 1 .6%
complex, 3 to 9 percent
slopes
58 Rosebud fine sandy loam, 2.6 2.1 0.2%
0 to 6 percent slopes
60 Shingle clay loam, 0 to 9 4.5 33.9 3.8%
percent slopes
61 Stoneham fine sandy 2.0 2.2 0.3%
loam, 0 to 6 percent
slopes
62 Stoneham fine sandy 2.0 3.2 0.4%
loam, 6 to 9 percent
slopes
66 Thedalund-Keota loams, 4.1 3.1 0.4%
0 to 3 percent slopes
67 Thedalund-Keota barns, 4.1 3.4 0.4%
3 to 9 percent slopes
Totals for Area of Interest 882.5 100.0%
Rating Options—Linear Extensibility
Units of Measure: percent
Aggregation Method: Dominant Component
Component Percent Cutoff: None Specified
Tie-break Rule: Higher
Interpret Nulls as Zero: No
Layer Options (Horizon Aggregation Method): All Layers (Weighted Average)
70
References
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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.
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Caribbean , and the Pacific Basin. U .S. Department of Agriculture Handbook 296.
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Custom Soil Resource Report
United States Department of Agriculture, Soil Conservation Service. 1961 . Land
capability classification. U .S. Department of Agriculture Handbook 210.
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Keota-Redtail 115-kV Transmission Line Project
Weld County USR and 1041 Application
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