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Department of Cooperative Soil Survey,
Agriculture a joint effort of the United Report for
States Department of
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March 29 , 2023
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. nrcs . usda . gov/wps/
portal/nrcs/main/soils/health/) and certain conservation and engineering
applications . For more detailed information , contact your local USDA Service Center
(https ://offices .sc. egov. usda .gov/locator/app?agency= nrcs) or your NRCS State Soil
Scientist ( http ://www. nres . usda . gov/wps/portal/nres/detail/soils/contactus/?
cid =nrcs142p2_053951 ) .
142p2_053951 ) .
Great differences in soil properties can occur within short distances . Some soils are
seasonally wet or subject to flooding . Some are too unstable to be used as a
foundation for buildings or roads . Clayey or wet soils are poorly suited to use as
septic tank absorption fields . A high water table makes a soil poorly suited to
basements or underground installations.
The National Cooperative Soil Survey is a joint effort of the United States
Department of Agriculture and other Federal agencies, State agencies including the
Agricultural Experiment Stations , and local agencies . The Natural Resources
Conservation Service ( NRCS) has leadership for the Federal part of the National
Cooperative Soil Survey.
Information about soils is updated periodically. Updated information is available
through the NRCS Web Soil Survey, the site for official soil survey information .
The U . S . Department of Agriculture ( USDA) prohibits discrimination in all its
programs and activities on the basis of race , color, national origin , age , disability,
and where applicable , sex, marital status , familial status , parental status , religion ,
sexual orientation , genetic information , political beliefs , reprisal , or because all or a
part of an individual's income is derived from any public assistance program . ( Not
all prohibited bases apply to all programs . ) Persons with disabilities who require
2
alternative means for communication of program information ( Braille , large print,
audiotape , etc. ) should contact USDA's TARGET Center at (202 ) 720-2600 (voice
and TDD ). To file a complaint of discrimination , write to USDA, Director, Office of
Civil Rights , 1400 Independence Avenue , S .W. , Washington , D . C . 20250-9410 or
call (800) 795-3272 (voice ) or (202 ) 720-6382 (TDD ). USDA is an equal opportunity
provider and employer.
3
Contents
Preface 2
Soil Map 5
Soil Map 6
Legend 7
Map Unit Legend 8
Map Unit Descriptions 8
Weld County, Colorado, Southern Part 10
4 Aquolls and Aquepts, flooded 10
44 Olney loamy sand , 1 to 3 percent slopes 11
45 Olney loamy sand , 3 to 5 percent slopes 13
47 Olney fine sandy loam , 1 to 3 percent slopes 14
69 Valent sand , 0 to 3 percent slopes 15
70 Valent sand , 3 to 9 percent slopes 17
72 Vona loamy sand , 0 to 3 percent slopes 18
Soil Information for All Uses 20
Suitabilities and Limitations for Use 20
Building Site Development 20
Corrosion of Concrete 20
Dwellings Without Basements 23
Shallow Excavations 28
Small Commercial Buildings 32
Sanitary Facilities 37
Septic Tank Absorption Fields 37
References 43
4
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
Soil Mapri
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4 Map Scale: 1 :6,740 if printed on A landscape (11" x 8.5") sheet
Meters
S N 0 50 100 200 300 S
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Feet
0 300 600 1200 1800
Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 13N WGS84
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Custom Soil Resource Report
MAP LEGEND MAP INFORMATION
Area of Interest (AO!) Spoil Area The soil surveys that comprise your AOI were mapped at
Area of Interest (AOI ) 1 : 24 ,000 .
, Stony Spot
soils Very Stony Spot
Soil Map Unit Polygons Warning : Soil Map may not be valid at this scale.
V? Wet Spot
Soil Map Unit Lines
Enlargement of maps beyond the scale of mapping can cause
Other misunderstanding of the detail of mapping and accuracy of soil
Soil Map Unit Points pp g
Special Line Features line placement. The maps do not show the small areas of
Special Point Features contrasting soils that could have been shown at a more detailed
- ° ,,
Blowout Water Features scale .
Streams and Canals
Borrow Pit
Transportation Please rely on the bar scale on each map sheet for map
Clay Spot
Rails measurements.
Closed Depression
Interstate Highways
Source of Map : Natural Resources Conservation Service
Gravel Pit US Routes Web Soil Survey URL :
Gravelly Spot Coordinate System: Web Mercator (EPSG :3857)
Major Roads
Landfill Local Roads Maps from the Web Soil Survey are based on the Web Mercator
Lava Flow projection, which preserves direction and shape but distorts
Background
distance and area . A projection that preserves area , such as the
Marsh or swamp Aerial Photography
r Albers equal-area conic projection , should be used if more
w Mine or Quarry accurate calculations of distance or area are required .
CD Miscellaneous Water This product is generated from the USDA-MRCS certified data as
Perennial Water of the version date(s) listed below.
v Rock Outcrop Soil Survey Area : Weld County, Colorado, Southern Part
+ Saline Spot Survey Area Data : Version 21 , Sep 1 , 2022
C. Sandy Spot
•, Soil map units are labeled (as space allows) for map scales
Severely Eroded Spot 1 : 50 ,000 or larger.
40, Sinkhole Date(s) aerial images were photographed: Jun 8, 2021 —Jun 12,
it,\4) Slide or Slip 2021
77- Sodic Spot 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.
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Custom Soil Resource Report
MapLegendUnit
Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI
4 Aquolls and Aquepts, flooded 0 .3 0 .2%
44 Olney loamy sand, 1 to 3 31 .3 23 .0%
percent slopes
45 Olney loamy sand, 3 to 5 1 .3 0 .9%
percent slopes
47 Olney fine sandy loam , 1 to 3 26 .7 19 .6%
percent slopes
69 Valent sand , 0 to 3 percent 1 . 1 0 .8%
slopes
70 Valent sand , 3 to 9 percent 12 .3 9 .0%
slopes
72 Vona loamy sand, 0 to 3 63 . 1 46 .4%
percent slopes
Totals for Area of Interest 136.0 100.0%
MapDescriptionsUnit
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
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Custom Soil Resource Report
components may not have been observed , and consequently they are not
mentioned in the descriptions , especially where the pattern was so complex that it
was impractical to make enough observations to identify all the soils and
miscellaneous areas on the landscape .
The presence of minor components in a map unit in no way diminishes the
usefulness or accuracy of the data . The objective of mapping is not to delineate
pure taxonomic classes but rather to separate the landscape into landforms or
landform segments that have similar use and management requirements. The
delineation of such segments on the map provides sufficient information for the
development of resource plans . If intensive use of small areas is planned , however,
onsite investigation is needed to define and locate the soils and miscellaneous
areas .
An identifying symbol precedes the map unit name in the map unit descriptions .
Each description includes general facts about the unit and gives important soil
properties and qualities .
Soils that have profiles that are almost alike make up a soil series. Except for
differences in texture of the surface layer, all the soils of a series have major
horizons that are similar in composition , thickness , and arrangement.
Soils of one series can differ in texture of the surface layer, slope , stoniness ,
salinity, degree of erosion , and other characteristics that affect their use . On the
basis of such differences , a soil series is divided into soil phases. Most of the areas
shown on the detailed soil maps are phases of soil series . The name of a soil phase
commonly indicates a feature that affects use or management. For example , Alpha
silt loam , 0 to 2 percent slopes , is a phase of the Alpha series.
Some map units are made up of two or more major soils or miscellaneous areas .
These map units are complexes, associations , or undifferentiated groups .
A complex consists of two or more soils or miscellaneous areas in such an intricate
pattern or in such small areas that they cannot be shown separately on the maps .
The pattern and proportion of the soils or miscellaneous areas are somewhat similar
in all areas. Alpha-Beta complex, 0 to 6 percent slopes , is an example .
An association is made up of two or more geographically associated soils or
miscellaneous areas that are shown as one unit on the maps . Because of present
or anticipated uses of the map units in the survey area , it was not considered
practical or necessary to map the soils or miscellaneous areas separately. The
pattern and relative proportion of the soils or miscellaneous areas are somewhat
similar. Alpha-Beta association , 0 to 2 percent slopes , is an example .
An undifferentiated group is made up of two or more soils or miscellaneous areas
that could be mapped individually but are mapped as one unit because similar
interpretations can be made for use and management. The pattern and proportion
of the soils or miscellaneous areas in a mapped area are not uniform . An area can
be made up of only one of the major soils or miscellaneous areas , or it can be made
up of all of them . Alpha and Beta soils, 0 to 2 percent slopes , is an example .
Some surveys include miscellaneous areas. Such areas have little or no soil
material and support little or no vegetation . Rock outcrop is an example .
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Custom Soil Resource Report
Weld County, Colorado , Southern Part
4—Aquolls and Aquepts , flooded
Map Unit Setting
National map unit symbol: 3621
Elevation: 3 , 600 to 4 , 700 feet
Mean annual precipitation: 12 to 16 inches
Mean annual air temperature: 50 to 55 degrees F
Frost-free period: 100 to 165 days
Farmland classification : Prime farmland if drained and either protected from flooding
or not frequently flooded during the growing season
Map Unit Composition
Aquolls and similar soils: 55 percent
Aquepts, flooded, and similar soils: 25 percent
Minor components: 20 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Aquolls
Setting
Landform: Depressions , plains , drainageways
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Recent alluvium
Typical profile
HI - 0 to 8 inches: variable
H2 - 8 to 60 inches: stratified sandy loam to clay
Properties and qualities
Slope: 0 to 3 percent
Depth to restrictive feature: More than 80 inches
Drainage class: Poorly drained
Runoff class: Very low
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 6 to 36 inches
Frequency of flooding: FrequentNone
Frequency of ponding: None
Calcium carbonate, maximum content: 10 percent
Maximum salinity: Moderately saline to strongly saline (8 . 0 to 16 . 0 mmhos/cm )
Sodium adsorption ratio, maximum: 5 . 0
Available water supply, 0 to 60 inches: Low (about 4 . 7 inches)
Interpretive groups
Land capability classification (irrigated): 6w
Land capability classification (non irrigated) : 6w
Hydrologic Soil Group: D
Ecological site: R067BY035CO - Salt Meadow
Hydric soil rating: Yes
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Custom Soil Resource Report
Description of Aquepts, Flooded
Setting
Landform: Stream terraces
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Recent alluvium
Typical profile
HI - 0 to 8 inches: variable
H2 - 8 to 60 inches: stratified sandy loam to clay
Properties and qualities
Slope: 0 to 3 percent
Depth to restrictive feature: More than 80 inches
Drainage class: Poorly drained
Runoff class: Very low
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 6 to 36 inches
Frequency of flooding: FrequentNone
Frequency of ponding: None
Calcium carbonate, maximum content: 10 percent
Maximum salinity: Moderately saline to strongly saline (8 . 0 to 16 . 0 mmhos/cm )
Sodium adsorption ratio, maximum: 5 . 0
Available water supply, 0 to 60 inches: Low (about 4 . 7 inches)
Interpretive groups
Land capability classification (irrigated): 6w
Land capability classification (nonirrigated) : 6w
Hydrologic Soil Group: D
Ecological site: R067BY038CO - Wet Meadow
Hydric soil rating: Yes
Minor Components
Thedalund
Percent of map unit: 10 percent
Hydric soil rating: No
Haverson
Percent of map unit: 10 percent
Hydric soil rating: No
44—Olney loamy sand , 1 to 3 percent slopes
Map Unit Setting
National map unit symbol: 362r
Elevation: 4 , 600 to 5 , 200 feet
Mean annual precipitation: 11 to 15 inches
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Custom Soil Resource Report
Mean annual air temperature: 46 to 54 degrees F
Frost-free period: 125 to 175 days
Farmland classification : Farmland of statewide importance
Map Unit Composition
Olney and similar soils: 85 percent
Minor components: 15 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Olney
Setting
Landform: Plains
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Mixed deposit outwash
Typical profile
H1 - 0 to 10 inches: loamy sand
H2 - 10 to 20 inches: sandy clay loam
H3 - 20 to 25 inches: sandy clay loam
H4 - 25 to 60 inches: fine sandy loam
Properties and qualities
Slope: 1 to 3 percent
Depth to restrictive feature: More than 80 inches
Drainage class: Well drained
Runoff class: Low
Capacity of the most limiting layer to transmit water (Ksat) : Moderately high to high
(0 . 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 to very slightly saline (0 . 0 to 2 . 0 mmhos/cm )
Available water supply, 0 to 60 inches: Moderate (about 6 . 5 inches)
Interpretive groups
Land capability classification (irrigated): 3e
Land capability classification (non irrigated) : 4c
Hydrologic Soil Group: B
Ecological site: R067BY024CO - Sandy Plains
Hydric soil rating: No
Minor Components
Vona
Percent of map unit: 8 percent
Hydric soil rating: No
Zigweid
Percent of map unit: 7 percent
Hydric soil rating: No
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Custom Soil Resource Report
45—Olney loamy sand , 3 to 5 percent slopes
Map Unit Setting
National map unit symbol: 362s
Elevation: 4 , 600 to 5 , 200 feet
Mean annual precipitation: 11 to 15 inches
Mean annual air temperature: 46 to 54 degrees F
Frost-free period: 125 to 175 days
Farmland classification : Farmland of statewide importance
Map Unit Composition
Olney and similar soils: 85 percent
Minor components: 15 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Olney
Setting
Landform: Plains
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Mixed deposit outwash
Typical profile
H1 - 0 to 10 inches: loamy sand
H2 - 10 to 20 inches: sandy clay loam
H3 - 20 to 25 inches: sandy clay loam
H4 - 25 to 60 inches: fine sandy loam
Properties and qualities
Slope: 3 to 5 percent
Depth to restrictive feature: More than 80 inches
Drainage class: Well drained
Runoff class: Low
Capacity of the most limiting layer to transmit water (Ksat) : Moderately high to high
(0 . 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 to very slightly saline (0 . 0 to 2 . 0 mmhos/cm )
Available water supply, 0 to 60 inches: Moderate (about 6 . 5 inches)
Interpretive groups
Land capability classification (irrigated): 3e
Land capability classification (non irrigated) : 4c
Hydrologic Soil Group: B
Ecological site: R067BY024CO - Sandy Plains
Hydric soil rating: No
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Custom Soil Resource Report
Minor Components
Zigweid
Percent of map unit: 8 percent
Hydric soil rating: No
Vona
Percent of map unit: 7 percent
Hydric soil rating: No
47—Olney fine sandy loam , 1 to 3 percent slopes
Map Unit Setting
National map unit symbol: 362v
Elevation: 4 , 600 to 5 , 200 feet
Mean annual precipitation: 11 to 15 inches
Mean annual air temperature: 46 to 54 degrees F
Frost-free period: 125 to 175 days
Farmland classification: Prime farmland if irrigated and the product of I (soil
erodibility) x C (climate factor) does not exceed 60
Map Unit Composition
Olney and similar soils: 85 percent
Minor components: 15 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Olney
Setting
Landform: Plains
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Mixed deposit outwash
Typical profile
H1 - 0 to 10 inches: fine sandy loam
H2 - 10 to 20 inches: sandy clay loam
H3 - 20 to 25 inches: sandy clay loam
H4 - 25 to 60 inches: fine sandy loam
Properties and qualities
Slope: 1 to 3 percent
Depth to restrictive feature: More than 80 inches
Drainage class: Well drained
Runoff class: Low
Capacity of the most limiting layer to transmit water (Ksat) : Moderately high to high
(0 . 57 to 2 . 00 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
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Custom Soil Resource Report
Calcium carbonate, maximum content: 15 percent
Maximum salinity: Nonsaline to very slightly saline (0 . 0 to 2 . 0 mmhos/cm )
Available water supply, 0 to 60 inches: Moderate (about 7 . 0 inches )
Interpretive groups
Land capability classification (irrigated): 3e
Land capability classification (nonirrigated) : 4c
Hydrologic Soil Group: B
Ecological site: R067BY024CO - Sandy Plains
Hydric soil rating: No
Minor Components
Zigweid
Percent of map unit: 10 percent
Hydric soil rating: No
Vona
Percent of map unit: 5 percent
Hydric soil rating: No
69—Valent sand , 0 to 3 percent slopes
Map Unit Setting
National map unit symbol: 2tczd
Elevation: 3 , 000 to 5 , 210 feet
Mean annual precipitation: 13 to 20 inches
Mean annual air temperature: 48 to 52 degrees F
Frost-free period: 130 to 166 days
Farmland classification : Farmland of local importance
Map Unit Composition
Valent and similar soils: 85 percent
Minor components: 15 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Valent
Setting
Landform: Interdunes
u nes
Landform position (two-dimensional): Footslope , toeslope
Landform position (three-dimensional) : Base slope
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Noncalcareous eolian sands
Typical profile
A - 0 to 5 inches: sand
AC - 5 to 12 inches: sand
Cl - 12 to 30 inches: sand
C2 - 30 to 80 inches: sand
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Custom Soil Resource Report
Properties and qualities
Slope: 0 to 3 percent
Depth to restrictive feature: More than 80 inches
Drainage class: Excessively drained
Runoff class: Negligible
Capacity of the most limiting layer to transmit water (Ksat) : High to very high (6 . 00
to 39 . 96 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Calcium carbonate, maximum content: 1 percent
Maximum salinity: Nonsaline (0 . 1 to 1 . 9 mmhos/cm)
Available water supply, 0 to 60 inches: Very low (about 2 .4 inches)
Interpretive groups
Land capability classification (irrigated): 4e
Land capability classification (non irrigated) : 6e
Hydrologic Soil Group: A
Ecological site: R067BY015CO - Deep Sand , R072XA021 KS - Sands ( North ) ( PE
16-20)
Hydric soil rating: No
Minor Components
Dailey
Percent of map unit: 5 percent
Landform: Interdunes
Landform position (two-dimensional): Toeslope
Landform position (three-dimensional) : Base slope
Down-slope shape: Linear
Across-slope shape: Concave
Ecological site: R067BY015CO - Deep Sand , R072XA022KS - Sandy ( North ) Draft
(April 2010) ( PE 16-20)
Hydric soil rating: No
Julesburg
Percent of map unit: 5 percent
Landform: Interdunes
Landform position (two-dimensional): Toeslope
Landform position (three-dimensional) : Base slope
Down-slope shape: Linear
Across-slope shape: Linear
Ecological site: R067BY024CO - Sandy Plains , R072XA022KS - Sandy ( North )
Draft (April 2010) ( PE 16-20)
Hydric soil rating: No
Vona
Percent of map unit: 5 percent
Landform: Interdunes
Landform position (two-dimensional): Toeslope
Landform position (three-dimensional) : Base slope
Down-slope shape: Linear
Across-slope shape: Linear
Ecological site: R067BY024CO - Sandy Plains , R072XA022KS - Sandy ( North )
Draft (April 2010) ( PE 16-20)
Hydric soil rating: No
16
Custom Soil Resource Report
7o—Valent sand , 3 to 9 percent slopes
Map Unit Setting
National map unit symbol: 2tczf
Elevation: 3 , 050 to 5 , 150 feet
Mean annual precipitation: 12 to 18 inches
Mean annual air temperature: 48 to 55 degrees F
Frost-free period: 130 to 180 days
Farmland classification : Not prime farmland
Map Unit Composition
Valent and similar soils: 80 percent
Minor components: 20 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Valent
Setting
Landform: Hills , dunes
Landform position (two-dimensional): Shoulder, backslope , footslope , summit
Landform position (three-dimensional) : Head slope , nose slope , side slope , crest
Down-slope shape: Convex, linear
Across-slope shape: Convex, linear
Parent material: Noncalcareous eolian sands
Typical profile
A - 0 to 5 inches: sand
AC - 5 to 12 inches: sand
Cl - 12 to 30 inches: sand
C2 - 30 to 80 inches: sand
Properties and qualities
Slope: 3 to 9 percent
Depth to restrictive feature: More than 80 inches
Drainage class: Excessively drained
Runoff class: Very low
Capacity of the most limiting layer to transmit water (Ksat) : High to very high (6 . 00
to 39 . 96 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Calcium carbonate, maximum content: 1 percent
Maximum salinity: Nonsaline (0 . 0 to 1 . 9 mmhos/cm)
Available water supply, 0 to 60 inches: Very low (about 2 .4 inches)
Interpretive groups
Land capability classification (irrigated): 4e
Land capability classification (non irrigated) : 6e
Hydrologic Soil Group: A
Ecological site: R067BY015CO - Deep Sand , R072XY109KS - Rolling Sands
17
Custom Soil Resource Report
Hydric soil rating: No
Minor Components
Dailey
Percent of map unit: 10 percent
Landform: Interdunes
Landform position (two-dimensional): Footslope , toeslope
Landform position (three-dimensional) : Base slope
Down-slope shape: Linear
Across-slope shape: Concave
Ecological site: R067BY015CO - Deep Sand , R072XA021 KS - Sands ( North ) ( PE
16-20)
Hydric soil rating: No
Vona
Percent of map unit: 5 percent
Landform: Hills
Landform position (two-dimensional): Shoulder, backslope , footslope
Landform position (three-dimensional) : Head slope , nose slope , side slope , base
slope
Down-slope shape: Linear
Across-slope shape: Linear
Ecological site: R067BY024CO - Sandy Plains , R072XA022KS - Sandy ( North )
Draft (April 2010) ( PE 16-20)
Hydric soil rating: No
Haxtun
Percent of map unit: 5 percent
Landform: Interdunes
Landform position (two-dimensional): Footslope , toeslope
Landform position (three-dimensional) : Base slope
Down-slope shape: Linear
Across-slope shape: Concave
Ecological site: R067BY024CO - Sandy Plains , R072XY111 KS - Sandy Plains
Hydric soil rating: No
72—Vona loamy sand , 0 to 3 percent slopes
Map Unit Setting
National map unit symbol: 363r
Elevation: 4 , 600 to 5 , 200 feet
Mean annual precipitation: 13 to 15 inches
Mean annual air temperature: 48 to 55 degrees F
Frost-free period: 130 to 160 days
Farmland classification : Farmland of local importance
Map Unit Composition
Vona and similar soils: 85 percent
Minor components: 15 percent
18
Custom Soil Resource Report
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Vona
Setting
Landform: Plains, terraces
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Alluvium and/or eolian deposits
Typical profile
H ? - 0 to 6 inches: loamy sand
H2 - 6 to 28 inches: fine sandy loam
H3 - 28 to 60 inches: sandy loam
Properties and qualities
Slope: 0 to 3 percent
Depth to restrictive feature: More than 80 inches
Drainage class: Well drained
Runoff class: Very low
Capacity of the most limiting layer to transmit water (Ksat) : High ( 1 . 98 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 slightly saline (0 . 0 to 4 . 0 mmhos/cm )
Available water supply, 0 to 60 inches: Moderate (about 6 . 5 inches)
Interpretive groups
Land capability classification (irrigated): 3e
Land capability classification (non irrigated) : 4e
Hydrologic Soil Group: A
Ecological site: R067BY024CO - Sandy Plains
Hydric soil rating: No
Minor Components
Remmit
Percent of map unit: 10 percent
Hydric soil rating: No
Valent
Percent of map unit: 5 percent
Hydric soil rating: No
19
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 .
Corrosion of Concrete
" Risk of corrosion" pertains to potential soil-induced electrochemical or chemical
action that corrodes or weakens concrete . The rate of corrosion of concrete is
based mainly on the sulfate and sodium content, texture , moisture content, and
acidity of the soil . Special site examination and design may be needed if the
combination of factors results in a severe hazard of corrosion . The concrete in
installations that intersect soil boundaries or soil layers is more susceptible to
corrosion than the concrete in installations that are entirely within one kind of soil or
within one soil layer.
The risk of corrosion is expressed as " low, " " moderate , " or " high . "
20
Custom Soil Resource Report
Map Corrosion of Concrete
1-
O O
522300 522400 522500 522600 522700 522800 522900 523000 523100 523200 523300 523400 523500 523600 523700
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4 Map Scale: 1 :6,740 if printed on A landscape (11" x 8.5") sheet
vr
Meters
S N 0 50 100 200 300 S
iivi
Feet
0 300 600 1200 1800
Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 13N WGS84
21
Custom Soil Resource Report
MAP LEGEND MAP INFORMATION
Area of Interest (AO!) Background The soil surveys that comprise your AOI were mapped at
Area of Interest (AOI ) Aerial Photography 1 : 24 ,000 .
b
Soils
Soil Rating Polygons Warning : Soil Map may not be valid at this scale.
High
Enlargement of maps beyond the scale of mapping can cause
Moderate misunderstanding of the detail of mapping and accuracy of soil
Low line placement. The maps do not show the small areas of
contrasting soils that could have been shown at a more detailed
Not rated or not available scale .
Soil Rating Lines
„ .; High Please rely on the bar scale on each map sheet for map
measurements.
▪ • Moderate
Low Source of Map : Natural Resources Conservation Service
Web Soil Survey URL :
• r Not rated or not available Coordinate System: Web Mercator (EPSG :3857)
Soil Rating Points
High Maps from the Web Soil Survey are based on the Web Mercator
projection, which preserves direction and shape but distorts
Moderate distance and area . A projection that preserves area , such as the
Low Albers equal-area conic projection , should be used if more
Elaccurate calculations of distance or area are required .
Not rated or not available
Water Features This product is generated from the USDA-NRCS certified data as
of the version date(s) listed below.
Streams and Canals
Transportation Soil Survey Area : Weld County, Colorado, Southern Part
Rails Survey Area Data : Version 21 , Sep 1 , 2022
Interstate Highways
Soil map units are labeled (as space allows) for map scales
US Routes 1 : 50 ,000 or larger.
Major Roads
Date(s) aerial images were photographed: Jun 8, 2021 —Jun 12,
Local Roads 2021
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.
22
Custom Soil Resource Report
Table—Corrosion of Concrete
Map unit symbol Map unit name Rating Acres in AOI Percent of AOI
4 Aquolls and Aquepts, High 0. 3 0 .2%
flooded
44 Olney loamy sand , 1 to 3 Low 31 . 3 23 .0%
percent slopes
45 Olney loamy sand , 3 to 5 Low 1 . 3 0 .9%
percent slopes
47 Olney fine sandy loam , 1 Low 26. 7 19 .6%
to 3 percent slopes
69 Valent sand, 0 to 3 Low 1 . 1 0 .8%
percent slopes
70 Valent sand, 3 to 9 Low 12. 3 9 .0%
percent slopes
72 Vona loamy sand, 0 to 3 Moderate 63. 1 46 .4%
percent slopes
Totals for Area of Interest 136.0 100.0%
Rating Options—Corrosion of Concrete
Aggregation Method: Dominant Condition
Component Percent Cutoff: None Specified
Tie-break Rule: Higher
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 limited" indicates that the soil has features that are very favorable for the
23
Custom Soil Resource Report
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 .
24
Custom Soil Resource Report
Map Dwellings Without Basements
4 1-
522300 522400 522500 522600 522700 522800 522900 523000 523100 523200 523300 523400 523500 523600 523700
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522300 522400 522500 522600 522700 522800 522900 52300 523100 523200 523300 523400 523500 523600 523700
ri
ri
Map Sole: 1 :6,740 if printed on A landscape (11" x 8.5") sheet740
vt
Meters
N 0 50 100 200 300 do
TH
Feet
0 300 600 1200 1800
Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 13N WGS84
25
Custom Soil Resource Report
MAP LEGEND MAP INFORMATION
Area of Interest (AO!) Background The soil surveys that comprise your AOI were mapped at
Area of Interest (AOI ) Aerial Photography 1 : 24 ,000 .
b
Soils
Soil Rating Polygons Warning : Soil Map may not be valid at this scale.
Very limited
Enlargement of maps beyond the scale of mapping can cause
Somewhat limited misunderstanding of the detail of mapping and accuracy of soil
Not limited line placement. The maps do not show the small areas of
contrasting soils that could have been shown at a more detailed
Not rated or not available scale .
Soil Rating Lines
„ .; Very limited Please rely on the bar scale on each map sheet for map
measurements.
Somewhat limited
y Not limited Source of Map : Natural Resources Conservation Service
Web Soil Survey URL :
r Not rated or not available Coordinate System: Web Mercator (EPSG :3857)
Soil Rating Points
Very limited Maps from the Web Soil Survey are based on the Web Mercator
projection, which preserves direction and shape but distorts
Somewhat limited distance and area . A projection that preserves area , such as the
Not limited Albers equal-area conic projection , should be used if more
Elaccurate calculations of distance or area are required .
Not rated or not available
Water Features This product is generated from the USDA-NRCS certified data as
of the version date(s) listed below.
Streams and Canals
Transportation Soil Survey Area : Weld County, Colorado, Southern Part
Rails Survey Area Data : Version 21 , Sep 1 , 2022
Interstate Highways
Soil map units are labeled (as space allows) for map scales
US Routes 1 : 50 ,000 or larger.
Major Roads
Date(s) aerial images were photographed: Jun 8, 2021 —Jun 12,
Local Roads 2021
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.
26
Custom Soil Resource Report
Tables—Dwellings Without Basements
Map unit Map unit name Rating Component Rating reasons Acres in AOI Percent of AOI
symbol name (percent) (numeric
values)
4 Aquolls and Very limited Aquolls (55% ) Flooding ( 1 .00) 0. 3 0 .2%
Aquepts,
flooded Depth to
saturated zone
(0.81 )
Shrink-swell
(0.50)
Aquepts, flooded Flooding ( 1 .00)
(25% )
Depth to
saturated zone
(0.81 )
Shrink-swell
(0.50)
44 Olney loamy Not limited Olney (85% ) 31 . 3 23 .0%
sand, 1 to 3
percent slopes
45 Olney loamy Not limited Olney (85%) 1 . 3 0 .9%
sand, 3 to 5
percent slopes
47 Olney fine sandy Not limited Olney (85%) 26. 7 19 .6%
loam, 1 to 3
percent slopes
69 Valent sand, 0 to Not limited Valent (85%) 1 . 1 0 .8%
3 percent
slopes Dailey (5% )
Julesburg (5%)
Vona (5%)
70 Valent sand, 3 to Not limited Valent (80%) 12. 3 9 .0%
9 percent
slopes Dailey ( 10%)
Vona (5% )
Haxtun (5% )
72 Vona loamy Not limited Vona (85%) 63. 1 46 .4%
sand, 0 to 3
percent slopes
Totals for Area of Interest 136.0 100.0%
Rating Acres in AOI Percent of AOI
Not limited 135 .7 99 .8%
Very limited 0 .3 0 .2%
Totals for Area of Interest 136.0 100.0%
27
Custom Soil Resource Report
Rating Options—Dwellings Without Basements
Aggregation Method: Dominant Condition
Component Percent Cutoff. None Specified
Tie-break Rule: Higher
Shallow Excavations
S hallow excavations are trenches or holes dug to a maximum depth of 5 or 6 feet
for graves , utility lines, open ditches , or other purposes . The ratings are based on
the soil properties that influence the ease of digging and the resistance to
sloughing . Depth to bedrock or a cemented pan , hardness of bedrock or a
cemented pan , the amount of large stones, and dense layers influence the ease of
digging , filling , and compacting . Depth to the seasonal high water table , flooding ,
and ponding may restrict the period when excavations can be made . Slope
influences the ease of using machinery. Soil texture , depth to the water table , and
linear extensibility (shrink-swell potential ) influence the resistance to sloughing .
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 .
N umerical 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
S urvey 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 .
28
Custom Soil Resource Report
riCN Map Shallow Excavations ri
1-
S
522300 522400 522500 522600 522700 522800 522900 523000 523100 523200 523300 523400 523500 523600 523700
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522300 522400 522500 522600 522700 522800 522900 52300 523100 523200 523300 523400 523500 523600 523700
ri
Map Scale: 1 :6,740 if printed on A landscape (11" x 8.5") sheet ri
vr
Meters
S N 0 50 100 200 300 S
iivi
Feet
A
0 300 600 1200 1800
Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 13N WGS84
29
Custom Soil Resource Report
MAP LEGEND MAP INFORMATION
Area of Interest (AO!) Background The soil surveys that comprise your AOI were mapped at
Area of Interest (AOI ) Aerial Photography 1 : 24 ,000 .
b
Soils
Soil Rating Polygons Warning : Soil Map may not be valid at this scale.
Very limited
Enlargement of maps beyond the scale of mapping can cause
Somewhat limited misunderstanding of the detail of mapping and accuracy of soil
Not limited line placement. The maps do not show the small areas of
contrasting soils that could have been shown at a more detailed
Not rated or not available scale .
Soil Rating Lines
„ .; Very limited Please rely on the bar scale on each map sheet for map
measurements.
Somewhat limited
y Not limited Source of Map : Natural Resources Conservation Service
Web Soil Survey URL :
r Not rated or not available Coordinate System: Web Mercator (EPSG :3857)
Soil Rating Points
Very limited Maps from the Web Soil Survey are based on the Web Mercator
projection, which preserves direction and shape but distorts
Somewhat limited distance and area . A projection that preserves area , such as the
Not limited Albers equal-area conic projection , should be used if more
Elaccurate calculations of distance or area are required .
Not rated or not available
Water Features This product is generated from the USDA-NRCS certified data as
of the version date(s) listed below.
Streams and Canals
Transportation Soil Survey Area : Weld County, Colorado, Southern Part
Rails Survey Area Data : Version 21 , Sep 1 , 2022
Interstate Highways
Soil map units are labeled (as space allows) for map scales
US Routes 1 : 50 ,000 or larger.
Major Roads
Date(s) aerial images were photographed: Jun 8, 2021 —Jun 12,
Local Roads 2021
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
Tables—Shallow Excavations
Map unit Map unit name Rating Component Rating reasons Acres in AOI Percent of AOI
symbol name (percent) (numeric
values)
4 Aquolls and Very limited Aquolls (55% ) Depth to 0. 3 0 .2%
Aquepts, saturated zone
flooded ( 1 .00)
Flooding (0 .80)
Dusty (0.09)
Unstable
excavation
walls (0. 01 )
Aquepts, flooded Depth to
(25% ) saturated zone
( 1 .00)
Flooding (0 .80)
Dusty (0. 09)
Unstable
excavation
walls (0. 01 )
44 Olney loamy Somewhat Olney (85%) Unstable 31 . 3 23 .0%
sand, 1 to 3 limited excavation
percent slopes walls (0. 01 )
Dusty (0. 00)
45 Olney loamy Somewhat Olney (85% ) Unstable 1 . 3 0 .9%
sand, 3 to 5 limited excavation
percent slopes walls (0.01 )
Dusty (0. 00 )
47 Olney fine sandy Somewhat Olney (85% ) Dusty (0. 09) 26. 7 19 .6%
loam, 1 to 3 limited
percent slopes Unstable
excavation
walls (0. 01 )
69 Valent sand, 0 to Very limited Valent (85%) Unstable 1 . 1 0 .8%
3 percent excavation
slopes walls ( 1 . 00 )
70 Valent sand, 3 to Very limited Valent (80%) Unstable 12. 3 9 .0%
9 percent excavation
slopes walls ( 1 . 00)
72 Vona loamy Somewhat Vona (85%) Unstable 63. 1 46 .4%
sand, 0 to 3 limited excavation
percent slopes walls (0.01 )
Totals for Area of Interest 136.0 100.0%
Rating Acres in AOI Percent of AOI
Somewhat limited 122 .3 90 .0%
Very limited 13 .6 10 .0%
Totals for Area of Interest 136.0 100.0%
31
Custom Soil Resource Report
Rating Options-Shallow Excavations
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 .
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
32
Custom Soil Resource Report
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 .
33
Custom Soil Resource Report
Map Small Commercial Buildings I,
1-
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522300 522400 522500 522600 522700 522800 522900 523000 523100 523200 523300 523400 523500 523600 523700
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522300 522400 522500 522600 522700 522800 522900 523000 523100 523200 523300 523400 523500 523600 523700
ri
4 Map Scale: 1 :6,740 if printed on A landscape (11" x 8.5") sheet
vi-
Meters
N 0 50 100 200 300 S
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FeTH et
A0 300 600 1200 1800
Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 13N WGS84
34
Custom Soil Resource Report
MAP LEGEND MAP INFORMATION
Area of Interest (AO!) Background The soil surveys that comprise your AOI were mapped at
Area of Interest (AOI ) Aerial Photography 1 : 24 ,000 .
b
Soils
Soil Rating Polygons Warning : Soil Map may not be valid at this scale.
Very limited
Enlargement of maps beyond the scale of mapping can cause
Somewhat limited misunderstanding of the detail of mapping and accuracy of soil
Not limited line placement. The maps do not show the small areas of
contrasting soils that could have been shown at a more detailed
Not rated or not available scale .
Soil Rating Lines
„ .; Very limited Please rely on the bar scale on each map sheet for map
measurements.
Somewhat limited
y Not limited Source of Map : Natural Resources Conservation Service
Web Soil Survey URL :
r Not rated or not available Coordinate System: Web Mercator (EPSG :3857)
Soil Rating Points
Very limited Maps from the Web Soil Survey are based on the Web Mercator
projection, which preserves direction and shape but distorts
Somewhat limited distance and area . A projection that preserves area , such as the
Not limited Albers equal-area conic projection , should be used if more
Elaccurate calculations of distance or area are required .
Not rated or not available
Water Features This product is generated from the USDA-NRCS certified data as
of the version date(s) listed below.
Streams and Canals
Transportation Soil Survey Area : Weld County, Colorado, Southern Part
Rails Survey Area Data : Version 21 , Sep 1 , 2022
Interstate Highways
Soil map units are labeled (as space allows) for map scales
US Routes 1 : 50 ,000 or larger.
Major Roads
Date(s) aerial images were photographed: Jun 8, 2021 —Jun 12,
Local Roads 2021
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.
35
Custom Soil Resource Report
Tables—Small Commercial Buildings
Map unit Map unit name Rating Component Rating reasons Acres in AOI Percent of AOI
symbol name (percent) (numeric
values)
4 Aquolls and Very limited Aquolls (55% ) Flooding ( 1 .00) 0. 3 0 .2%
Aquepts,
flooded Depth to
saturated zone
(0.81 )
Shrink-swell
(0.50)
Aquepts, flooded Flooding ( 1 .00)
(25% )
Depth to
saturated zone
(0.81 )
Shrink-swell
(0.50)
44 Olney loamy Not limited Olney (85% ) 31 . 3 23 .0%
sand, 1 to 3
percent slopes
45 Olney loamy Somewhat Olney (85%) Slope (0. 00 ) 1 . 3 0 .9%
sand, 3 to 5 limited
percent slopes
47 Olney fine sandy Not limited Olney (85%) 26. 7 19 .6%
loam, 1 to 3
percent slopes
69 Valent sand, 0 to Not limited Valent (85%) 1 . 1 0 .8%
3 percent
slopes Dailey (5% )
Julesburg (5%)
Vona (5%)
70 Valent sand, 3 to Somewhat Valent (80%) Slope (0. 52 ) 12. 3 9 .0%
9 percent limited
slopes Vona (5% ) Slope (0. 52 )
72 Vona loamy Not limited Vona (85%) 63. 1 46 .4%
sand, 0 to 3
percent slopes
Totals for Area of Interest 136.0 100.0%
Rating Acres in AOI Percent of AOI
Not limited 122 . 1 89 .8%
Somewhat limited 13 .5 10 .0%
Very limited 0 .3 0 .2%
Totals for Area of Interest 136.0 100.0%
36
Custom Soil Resource Report
Rating Options-Small Commercial Buildings
Aggregation Method: Dominant Condition
Component Percent Cutoff. None Specified
Tie-break Rule: Higher
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 , 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) .
37
Custom Soil Resource Report
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 .
38
Custom Soil Resource Report
Map Septic Tank Absorption Fieldsri
1-
522300 522400 522500 522600 522700 522800 522900 523000 523100 523200 523300 523400 523500 523600 523700
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522300 522400 522500 522600 522700 522800 522900 52300 523100 523200 523300 523400 523500 523600 523700
Map Scale: 1 :6,740 if printed on A landscape (11" x 8.5") sheet
vr
Meters
A
S N 0 50 100 200 300 S
iivi
Feet
0 300 600 1200 1800
Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 13N WGS84
39
Custom Soil Resource Report
MAP LEGEND MAP INFORMATION
Area of Interest (AO!) Background The soil surveys that comprise your AOI were mapped at
Area of Interest (AOI ) Aerial Photography 1 : 24 ,000 .
b
Soils
Soil Rating Polygons Warning : Soil Map may not be valid at this scale.
Very limited
Enlargement of maps beyond the scale of mapping can cause
Somewhat limited misunderstanding of the detail of mapping and accuracy of soil
Not limited line placement. The maps do not show the small areas of
contrasting soils that could have been shown at a more detailed
Not rated or not available scale .
Soil Rating Lines
„ .; Very limited Please rely on the bar scale on each map sheet for map
measurements.
Somewhat limited
y Not limited Source of Map : Natural Resources Conservation Service
Web Soil Survey URL :
r Not rated or not available Coordinate System: Web Mercator (EPSG :3857)
Soil Rating Points
Very limited Maps from the Web Soil Survey are based on the Web Mercator
projection, which preserves direction and shape but distorts
Somewhat limited distance and area . A projection that preserves area , such as the
Not limited Albers equal-area conic projection , should be used if more
Elaccurate calculations of distance or area are required .
Not rated or not available
Water Features This product is generated from the USDA-NRCS certified data as
of the version date(s) listed below.
Streams and Canals
Transportation Soil Survey Area : Weld County, Colorado, Southern Part
Rails Survey Area Data : Version 21 , Sep 1 , 2022
Interstate Highways
Soil map units are labeled (as space allows) for map scales
US Routes 1 : 50 ,000 or larger.
Major Roads
Date(s) aerial images were photographed: Jun 8, 2021 —Jun 12,
Local Roads 2021
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.
40
Custom Soil Resource Report
Tables—Septic Tank Absorption Fields
Map unit Map unit name Rating Component Rating reasons Acres in AOI Percent of AOI
symbol name (percent) (numeric
values)
4 Aquolls and Very limited Aquolls (55% ) Flooding ( 1 .00) 0. 3 0 .2%
Aquepts, Depth to
flooded
saturated zone
( 1 .00)
Seepage, bottom
layer ( 1 .00)
Aquepts, flooded Flooding ( 1 .00)
(25% )
Depth to
saturated zone
( 1 .00)
Seepage, bottom
layer ( 1 .00)
44 Olney loamy Somewhat Olney (85% ) Slow water 31 . 3 23 .0%
sand, 1 to 3 limited movement
percent slopes (0.50)
45 Olney loamy Somewhat Olney (85%) Slow water 1 . 3 0 .9%
sand, 3 to 5 limited movement
percent slopes (0.50)
47 Olney fine sandy Somewhat Olney (85%) Slow water 26. 7 19 .6%
loam, 1 to 3 limited movement
percent slopes (0.50)
69 Valent sand, 0 to Very limited Valent (85%) Filtering capacity 1 . 1 0 .8%
3 percent ( 1 .00)
slopes
Dailey (5% ) Filtering capacity
( 1 .00)
Seepage, bottom
layer ( 1 .00)
70 Valent sand, 3 to Very limited Valent (80%) Filtering capacity 12. 3 9 .0%
9 percent ( 1 .00)
slopes
Dailey ( 10%) Filtering capacity
( 1 .00)
Seepage, bottom
layer ( 1 .00)
Haxtun (5% ) Slow water
movement
( 1 .00)
Seepage, bottom
layer ( 1 .00)
72 Vona loamy Not limited Vona (85%) 63. 1 46 .4%
sand, 0 to 3
percent slopes
Totals for Area of Interest 136.0 100.0%
41
Custom Soil Resource Report
Rating Acres in AOI Percent of AOI
Not limited 63 . 1 46 .4%
Somewhat limited 59 .2 43 .6%
Very limited 13 .6 10 .0%
Totals for Area of Interest 136.0 100.0%
Rating Options—Septic Tank Absorption Fields
Aggregation Method: Dominant Condition
Component Percent Cutoff: None Specified
Tie-break Rule: Higher
42
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.
N ational Research Council . 1995 . Wetlands : Characteristics and boundaries .
Soil Survey Division Staff. 1993 . Soil survey manual . Soil Conservation Service .
U . S . Department of Agriculture Handbook 18 . http ://www. nrcs. usda . gov/wps/portal/
nres/detai I/national/soils/?cid = nres 142p2_054262
Soil Survey Staff. 1999 . Soil taxonomy: A basic system of soil classification for
making and interpreting soil surveys . 2nd edition . Natural Resources Conservation
Service , U . S . Department of Agriculture Handbook 436 . http ://
www. nres . usda . gov/wps/portal/nres/detail/national/soils/?cid =n res142p2_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 =n res142p2_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 .
U nited States Army Corps of Engineers , Environmental Laboratory. 1987 . Corps of
Engineers wetlands delineation manual . Waterways Experiment Station Technical
Report Y-87- 1 .
U nited States Department of Agriculture , Natural Resources Conservation Service .
N ational forestry manual . http ://www. nres . usda . gov/wps/portal/nres/detail/soils/
home/?cid =nrcs142p2_053374
p2_053374
U nited States Department of Agriculture , Natural Resources Conservation Service .
N ational range and pasture handbook. http ://www. nrcs . usda .gov/wps/portal/nrcs/
detail/national/landuse/rangepastu re/?cid =stelprdb 1043084
43
Custom Soil Resource Report
U nited States Department of Agriculture , Natural Resources Conservation Service .
N ational soil survey handbook, title 430-VI . http ://www. nrcs . usda .gov/wps/portal/
nres/detai I/soi Is/scientists/?cid =nres 142p2_054242
U nited 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
U nited 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
44
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