HomeMy WebLinkAbout20150041.tiff 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
N RCS States Department of
Agriculture and other Weld Count
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September 5, 2014
Preface
Soil surveys contain information that affects land use planning in survey areas. They
highlight soil limitations that affect various land uses and provide information about
the properties of the soils in the survey areas. Soil surveys are designed for many
different users, including farmers, ranchers, foresters, agronomists, urban planners,
community officials, engineers, developers, builders, and home buyers. Also,
conservationists, teachers, students, and specialists in recreation, waste disposal,
and pollution control can use the surveys to help them understand, protect, or enhance
the environment.
Various land use regulations of Federal, State, and local governments may impose
special restrictions on land use or land treatment. Soil surveys identify soil properties
that are used in making various land use or land treatment decisions. The information
is intended to help the land users identify and reduce the effects of soil limitations on
various land uses. The landowner or user is responsible for identifying and complying
with existing laws and regulations.
Although soil survey information can be used for general farm, local, and wider area
planning, onsite investigation is needed to supplement this information in some cases.
Examples include soil quality assessments (http://www.nres. usda.gov/wps/portal/
nrcs/main/soils/health/) and certain conservation and engineering applications. For
more detailed information, contact your local USDA Service Center (http://
offices.sc.egov.usda.gov/locator/app?agency=nres) or your NRCS State Soil
Scientist (http://www. nres.usda.gov/wps/portal/nres/detail/soils/contactus/?
cid=nrcs142p2_053951 ).
Great differences in soil properties can occur within short distances. Some soils are
seasonally wet or subject to flooding. Some are too unstable to be used as a
foundation for buildings or roads. Clayey or wet soils are poorly suited to use as septic
tank absorption fields. A high water table makes a soil poorly suited to basements or
underground installations.
The National Cooperative Soil Survey is a joint effort of the United States Department
of Agriculture and other Federal agencies, State agencies including the Agricultural
Experiment Stations, and local agencies. The Natural Resources Conservation
Service (NRCS) has leadership for the Federal part of the National Cooperative Soil
Survey.
Information about soils is updated periodically. Updated information is available
through the NRCS Web Soil Survey, the site for official soil survey information.
The U.S. Department of Agriculture (USDA) prohibits discrimination in all its programs
and activities on the basis of race, color, national origin, age, disability, and where
applicable, sex, marital status, familial status, parental status, religion, sexual
orientation, genetic information, political beliefs, reprisal, or because all or a part of an
individual's income is derived from any public assistance program. (Not all prohibited
bases apply to all programs.) Persons with disabilities who require 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
a
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, Southern Part 12
32—Kim loam, 1 to 3 percent slopes 12
Soil Information for All Uses 14
Suitabilities and Limitations for Use 14
Sanitary Facilities 14
Septic Tank Absorption Fields 14
Septic Tank Absorption Fields 18
References 23
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 Iandform 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(AOI) ® Spoil Area The soil surveys that comprise your AOi were mapped at 1:24,000.
n Area of Interest (AOI) 0 Stony Spot
Soils Warning: Soil Map may not be valid at this scale.
al Very Stony Spot
Solt Map Unit Polygons
V/ Wet Spot Enlargement of maps beyond the scale of mapping can cause
,..,r Solt Map Unit Lines misunderstanding of the detail of mapping and accuracy of soil line
Other
Soli Map UM 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
u Blowout Water Futures
Streams and Canals Please rely on the bar scale on each map sheet for map
Borrow Pit measurements.
Transportation
SE Clay Spot 4-1-4 Rails
Source of Map: Natural Resources Conservation Service
0 Closed Depression a/ Interstate Highways Web Soil Survey URL: http://websoilsurvey.nrcs.usda.gov
X Gravel Ptt Coordinate System: Web Mercator (EPSG:3857)
ipmer US Routes
4% Gravelly Spot Major Roads Maps from the Web Soil Survey are based on the Web Mercator
O Landfill Local Roads projection, which preserves direction and shape but distorts
distance end area, A projection that preserves area, such as the
R Lave Flow Background Albers equal-area conic projection, should be used if more accurate
Marsh or swamp . Aerial Photography calculations of distance or area are required.
* mine or Quarry This product is generated from the USDA-NRCS certified data as of
O Mtscettanoous Water the version date(s) listed below.
O Perennial Water
Soil Survey Area: Weld County, Colorado, Southern Part
v Rock Outcrop Survey Area Data: Version 12, Jan 3, 2014
+ saline Spot
Soil map units are labeled(as space eliows)formap scales 1:50,000
Sandy Spot or larger.
,r Severely Eroded Spot
Date(s) aerial images were photographed: Apr 22, 2011—Oct 19,
Q Sinkhole 2011
,p Slide or Sap
6odlc Spot The orthophoto or other base map on which the soli lines were
jgr compiled end digitized probably differs from the background
imagery displayed on these maps. As a result, some minor shifting
of mop unit bounden&3 may be ovedont
9
Custom Soil Resource Report
Map Unit Legend
Weld County, Colorado, Southern Part (CO618)
Map Unit Symbol Map Unit Name Acres In AO1 Percent of AOl
32 Kim loam, 1 to 3 percent slopes 1.7 100.0%
Totals for Area of Interest 1.7 •
T100.0%
Map Unit Descriptions
The map units delineated on the detailed soil maps in a soil survey represent the soils
or miscellaneous areas in the survey area. The map unit descriptions, along with the
maps, can be used to determine the composition and properties of a unit.
A map unit delineation on a soil map represents an area dominated by one or more
major kinds of soil or miscellaneous areas. A map unit is identified and named
according to the taxonomic classification of the dominant soils. Within a taxonomic
class there are precisely defined limits for the properties of the soils. On the landscape,
however, the soils are natural phenomena, and they have the characteristic variability
of all natural phenomena. Thus, the range of some observed properties may extend
beyond the limits defined for a taxonomic class. Areas of soils of a single taxonomic
class rarely, if ever, can be mapped without including areas of other taxonomic
classes. Consequently, every map unit is made up of the soils or miscellaneous areas
for which it is named and some minor components that belong to taxonomic classes
other than those of the major soils.
Most minor soils have properties similar to those of the dominant soil or soils in the
map unit, and thus they do not affect use and management. These are called
noncontrasting, or similar, components. They may or may not be mentioned in a
particular map unit description. Other minor components, however, have properties
and behavioral characteristics divergent enough to affect use or to require different
management. These are called contrasting, or dissimilar, components. They generally
are in small areas and could not be mapped separately because of the scale used.
Some small areas of strongly contrasting soils or miscellaneous areas are identified
by a special symbol on the maps. If included in the database for a given area, the
contrasting minor components are identified in the map unit descriptions along with
some characteristics of each. A few areas of minor components may not have been
observed, and consequently they are not mentioned in the descriptions, especially
where the pattern was so complex that it was impractical to make enough observations
to identify all the soils and miscellaneous areas on the landscape.
The presence of minor components in a map unit in no way diminishes the usefulness
or accuracy of the data. The objective of mapping is not to delineate pure taxonomic
classes but rather to separate the landscape into landforms or landform segments that
have similar use and management requirements. The delineation of such segments
on the map provides sufficient information for the development of resource plans. If
intensive use of small areas is planned, however, onsite investigation is needed to
define and locate the soils and miscellaneous areas.
10
Custom Soil Resource Report
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, Southern Part
32—Kim loam, 1 to 3 percent slopes
Map Unit Setting
National map unit symbol: 362b
Elevation: 4,900 to 5,250 feet
Mean annual precipitation: 13 to 17 inches
Mean annual air temperature: 46 to 52 degrees F
Frost-free period: 125 to 150 days
Farmland classification: Prime farmland if irrigated
Map Unit Composition
Kim and similar soils: 90 percent
Minor components: 10 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Kim
Setting
Landform: Alluvial fans, plains
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Mixed eolian deposits derived from sedimentary rock
Typical profile
H1 - 0 to 12 inches: loam
H2 - 12 to 40 inches: loam
H3 - 40 to 60 inches: fine sandy loam
Properties and qualities
Slope: 1 to 3 percent
Depth to restrictive feature: More than 80 inches
Natural drainage class: Well drained
Runoff class: Very low
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 in profile: 15 percent
Available water storage in profile: Moderate (about 9.0 inches)
Interpretive groups
Land capability classification (irrigated): 3e
Land capability classification (nonirrigated): 4e
Hydrologic Soil Group: B
Ecological site: Loamy plains (R067BY002CO)
Minor Components
Otero
Percent of map unit: 10 percent
12
Custom Soil Resource Report
13
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.
Sanitary Facilities
Sanitary Facilities interpretations are tools designed to guide the user in site selection
for the safe disposal of sewage and solid waste. Example interpretations include septic
tank absorption fields, sewage lagoons, and sanitary landfills.
Septic Tank Absorption Fields
Septic tank absorption fields are areas in which effluent from a septic tank is distributed
into the soil through subsurface tiles or perforated pipe. Only that part of the soil
between depths of 24 and 60 inches is evaluated. The ratings are based on the soil
properties that affect absorption of the effluent, construction and maintenance of the
system, and public health. Saturated hydraulic conductivity (Ksat), depth to a water
table, ponding, depth to bedrock or a cemented pan, and flooding affect absorption of
the effluent. Stones and boulders, ice, and bedrock or a cemented pan interfere with
installation. Subsidence interferes with installation and maintenance. Excessive slope
may cause lateral seepage and surfacing of the effluent in downslope areas.
Some soils are underlain by loose sand and gravel or fractured bedrock at a depth of
less than 4 feet below the distribution lines. In these soils the absorption field may not
adequately filter the effluent, particularly when the system is new. As a result, the
ground water may become contaminated.
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,
14
Custom Soil Resource Report
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.
15
MI
Custom Soil Resource Report
k Map—Septic Tank Absorption Fields
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16
Custom Soil Resource Report
MAP LEGEND MAP INFORMATION
Ana of Interest IAOI) Background The soil surveys that comprise your AOl were mapped at 1:24,000.
l l Area of Interest (AOI) . Aerial Photography
Soils Warning: Soil Map may not be valid at this scale.
Solt 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
(l 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.
D Not rated or not available
Please rely on the bar scale on each map sheet for map
Soil Rating Lines measurements.
,y Very limited
• Somewhat limited Source of Map: Natural Resources Conservation Service
Web Soil Survey URL: http:/Nyebsollsurvey.nres.usda.gov
.v Not limited Coordinate System: Web Mercator (EPSG:3657)
a • riot rated or not avatlablc
Maps from the Web Soil Survey are based on the Web Mercator
Soli Rating Points projection, which preserves direction and shape but distorts
f♦ Very limited distance and area. A projection that preserves area, such as the
p Somewhat limned Albers equal-area conic projection, should be used if more accurate
calculations of distance or area are required.
Not limited
Not rated or not evadable This product Is generated from the USDA-NRCS certified data as of
the version date(s) listed below.
Water Features
Streams end Canals Soil Survey Area: Weld County, Colorado, Southern Part
Transportation Survey Area Data: Version 12, Jan 3, 2014
4-14 Rails
Soil map units are labeled(as space allows)for map scales 1:50,000
r~ Interstate Highways or larger.
— US Routes
Date(s)aerial Images were photographed: Apr22, 2011—Oct 19,
Major Roads 2011
Local Ronda
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 mop unit boundanos may be evident
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Custom Soil Resource Report
Tables-Septic Tank Absorption Fields
Septic Tank Absorption Fields— Summary by Map Unit — Weld County, Colorado, Southern Part (CO618)
Map unit symbol Map unit name Rating Component Rating reasons Acres In AOI Percent of AOI
name (percent) (numeric values)
32 Kim loam, 1 to 3 Not limited Kim (90%) 1 .7 100.0%
percent slopes
Totals for Area of Interest 1.7 100.0%
Septic Tank Absorption Fields— Summary by Rating Value
Rating Acres in AOI Percent of AOI
Not limited 1 .7 100.0%
Totals for Area of Interest 1.7 100.0%
Rating Options—Septic Tank Absorption Fields
Aggregation Method: Dominant Condition
Component Percent Cutoff: None Specified
Tie-break Rule: Higher
Septic Tank Absorption Fields
Septic tank absorption fields are areas in which effluent from a septic tank is distributed
into the soil through subsurface tiles or perforated pipe. Only that part of the soil
between depths of 24 and 60 inches is evaluated. The ratings are based on the soil
properties that affect absorption of the effluent, construction and maintenance of the
system, and public health. Saturated hydraulic conductivity (Ksat), depth to a water
table, ponding, depth to bedrock or a cemented pan, and flooding affect absorption of
the effluent. Stones and boulders, ice, and bedrock or a cemented pan interfere with
installation. Subsidence interferes with installation and maintenance. Excessive slope
may cause lateral seepage and surfacing of the effluent in downslope areas.
Some soils are underlain by loose sand and gravel or fractured bedrock at a depth of
less than 4 feet below the distribution lines. In these soils the absorption field may not
adequately filter the effluent, particularly when the system is new. As a result, the
ground water may become contaminated.
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
18
Custom Soil Resource Report
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
Xk Map—Septic Tank Absorption Fields IR le
it k
5062'0 5(6270 506 4 50629O 506300 506310 5063:•0 506330 506340 c4) 5%36. 5'X370 5063$) sX9f) 'i4,o): I.A54to 5 54s
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•
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SC6250 506270 506250 906290 506300 506310 Q$7470 O13'10 906340 StlickS0 x6360 9%et '_rY38c 506390 506400 506410 506420
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IR �Se*:1:813rpr nx&4 dBdonAe(11'x8.5')sheet. ifi
meters
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P4 pnbdkxr Webf tvtata Cu ,n coor�>at>5:5NG584 Edge tts:t1TM Zone 213N AGSM
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Custom Soil Resource Report
MAP LEGEND MAP INFORMATION
Area of Interest(Aol) Background The soil surveys that comprise your ADI were mapped at 1:24,000.
Area of Interest (A01) . Aerial Photography
Sops Warning: Soil Map may not be valid at this scale.
Soil Rating Polygons
MI Very limited Enlargement of maps beyond the scale of mapping can cause
misunderstanding of the detail of mapping and accuracy of soil line
n Somewhat Drifted placement. The maps do not show the small areas of contrasting
El Not lknfted soils that could have been shown at a more detailed scale.
in Not rated or not available
Please rely on the bar scale on each map sheet for map
Boll Rating Lines measurements.
N Very Nmfted
• • Somewhat knitted Source of Map: Natural Resources Conservation Service
Web Soil Survey URL: http://websollsurvey.nres.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 Flitting Points projection, which preserves direction and shape but distorts
▪ Very limited distance and area. A projection that preserves area, such as the
p Albers equal-area conic projection, should be used if more accurate
Somewhat limited
calculations of distance or area are required.
MI 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 Fortuna
Streams and Canals Soil Survey Area: Weld County, Colorado, Southern Part
Transportation Survey Area Data: Version 12, Jan 3, 2014
+44 Raga
Soil map units are labeled(as space allows)for map scales 1:50,000
ry 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 sell lines were
compiled and digitized probably differs from the background
Imagery displayed on these maps. As a result, some minor shifting
o4 mep-cm,t botvndonos may be evident.
21
Custom Soil Resource Report
Tables—Septic Tank Absorption Fields
Septic Tank Absorption Fields— Summary by Map Unit—Weld County, Colorado, Southern Part (CO618)
Map unit symbol Map unit name Rating Component Rating reasons Acres In AOI Percent of AOI
name (percent) (numeric values)
32 Kim loam, 1 to 3 Not limited Kim (90%) 1 .7 100.0%
percent slopes
Totals for Area of Interest 1.7 100.0%
Septic Tank Absorption Fields— Summary by Rating Value
Rating Acres in AOI Percent of AO1
Not limited 1.7 100.0%
Totals for Area of Interest 1.7 100.0%
Rating Options-Septic Tank Absorption Fields
Aggregation Method: Dominant Condition
Component Percent Cutoff. None Specified
Tie-break Rule: Higher
22
References
American Association of State Highway and Transportation Officials (AASHTO). 2004.
Standard specifications for transportation materials and methods of sampling and
testing. 24th edition.
American Society for Testing and Materials (ASTM). 2005. Standard classification of
soils for engineering purposes. ASTM Standard D2487-00.
Cowardin, L.M. , V. Carter, F.C. Golet, and E.T. LaRoe. 1979. Classification of
wetlands and deep-water habitats of the United States. U.S. Fish and Wildlife Service
FWS/OBS-79/31 .
Federal Register. July 13, 1994. Changes in hydric soils of the United States.
Federal Register. September 18, 2002. Hydric soils of the United States.
Hurt, G.W., and L.M. Vasilas, editors. Version 6.0, 2006. Field indicators of hydric soils
in the United States.
National Research Council. 1995. Wetlands: Characteristics and boundaries.
Soil Survey Division Staff. 1993. Soil survey manual. Soil Conservation Service. U.S.
Department of Agriculture Handbook 18. http://www.nres.usda.gov/wps/portal/arcs/
detail/national/soils/?cid=nrcs142p2_054262
Soil Survey Staff. 1999. Soil taxonomy: A basic system of soil classification for making
and interpreting soil surveys. 2nd edition. Natural Resources Conservation Service,
U.S. Department of Agriculture Handbook 436. http://www.nrcs.usda.gov/wps/portal/
nres/detail/national/soils/?cid=nres142p2_053577
Soil Survey Staff. 2010. Keys to soil taxonomy. 11th edition. U.S. Department of
Agriculture, Natural Resources Conservation Service. http://www.nres.usda.gov/wps/
portal/nres/detail/national/soils/?cid=nres 142p2_053580
Tiner, R.W., Jr. 1985. Wetlands of Delaware. U.S. Fish and Wildlife Service and
Delaware Department of Natural Resources and Environmental Control, Wetlands
Section.
United States Army Corps of Engineers, Environmental Laboratory. 1987. Corps of
Engineers wetlands delineation manual. Waterways-Experiment Station Technical
Report Y-87-1 .
United States Department of Agriculture, Natural Resources Conservation Service.
National forestry manual. http://www.nres.usda.gov/wps/portal/nres/detail/soils/
home/?cid=nrcs142p2_053374
United States Department of Agriculture, Natural Resources Conservation Service.
National range and pasture handbook. http://www.nres. usda.gov/wps/portal/nres/
detail/national/landuse/rangepasture/?cid=stelprdbl 043084
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Custom Soil Resource Report
United States Department of Agriculture, Natural Resources Conservation Service.
National soil survey handbook, title 430-Vi. http://www.nrcs.usda.gov/wps/portal/
nres/detail/soils/scientists/?cid=nres142p2_054242
United States Department of Agriculture, Natural Resources Conservation Service.
2006. Land resource regions and major land resource areas of the United States, the
Caribbean, and the Pacific Basin. U.S. Department of Agriculture Handbook 296.
http://www.nres.usda.gov/wps/portal/nres/detail/national/soils/?
cid=nrcs142p2_053624
United States Department of Agriculture, Soil Conservation Service. 1961 . Land
capability classification. U.S. Department of Agriculture Handbook 210. http://
www.nres.usda.gov/Internet/FSE_DOCUMENTS/nres142p2_052290.pdf
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