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Department of
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ACS
Natural
Resources
Conservation
Service
A product of the National
Cooperative Soil Survey,
a joint effort of the United
States Department of
Agriculture and other
Federal agencies, State
agencies including the
Agricultural Experiment
Stations, and local
participants
0 ■■■■■■■■■■ 10 ..000 0 0 0 ft
Custom Soil Resource
Report for
Weld County,
Colorado,
Southern Part
November 17, 2022
Preface
Soil surveys contain information that affects land use planning in survey areas.
They highlight soil limitations that affect various land uses and provide information
about the properties of the soils in the survey areas. Soil surveys are designed for
many different users, including farmers, ranchers, foresters, agronomists, urban
planners, community officials, engineers, developers, builders, and home buyers.
Also, conservationists, teachers, students, and specialists in recreation, waste
disposal, and pollution control can use the surveys to help them understand,
protect, or enhance the environment.
Various land use regulations of Federal, State, and local governments may impose
special restrictions on land use or land treatment. Soil surveys identify soil
properties that are used in making various land use or land treatment decisions.
The information is intended to help the land users identify and reduce the effects of
soil limitations on various land uses. The landowner or user is responsible for
identifying and complying with existing laws and regulations.
Although soil survey information can be used for general farm, local, and wider area
planning, onsite investigation is needed to supplement this information in some
cases. Examples include soil quality assessments (http://www.nres.usda.gov/wps/
portal/nres/main/soils/health/) and certain conservation and engineering
applications. For more detailed information, contact your local USDA Service Center
(https://offices.sc.egov.usda.gov/locator/app?agency=nres) or your NRCS State Soil
Scientist (http://www.nres.usda.gov/wps/portal/nres/detail/soils/contactus/?
cid=nres 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 (MRCS) 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
How Soil Surveys Are Made 5
Soil Map 8
Soil Map (Cervi Ranch Infiltration Soil Map) 9
Legend 10
Map Unit Legend (Cervi Ranch Infiltration Soil Map) 11
Map Unit Descriptions (Cervi Ranch Infiltration Soil Map) 11
Weld County, Colorado, Southern Part 13
49 Osgood sand, 0 to 3 percent slopes 13
63 Terry fine sandy loam, 3 to 9 percent slopes 14
69 Valent sand, 0 to 3 percent slopes 15
70 Valent sand, 3 to 9 percent slopes 17
71 Valent-Loup complex, 0 to 9 percent slopes 18
Soil Information for All Uses 21
Soil Properties and Qualities 21
Soil Erosion Factors 21
K Factor, Whole Soil (Cervi Ranch Infiltration K Factor Whole Soil Map)21
Soil Qualities and Features 24
Hydrologic Soil Group (Cervi Ranch Infiltration Hydrologic Soil Group
Map) 24
Depth to Any Soil Restrictive Layer (Cervi Ranch Infiltration Depth to
Restrictive Layer Map) 28
Water Features 31
Depth to Water Table (Cervi Ranch Infiltration Depth to Water Table
Map) 31
References 37
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
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Custom Soil Resource Report
scientists classified and named the soils in the survey area, they compared the
individual soils with similar soils in the same taxonomic class in other areas so that
they could confirm data and assemble additional data based on experience and
research.
The objective of soil mapping is not to delineate pure map unit components; the
objective is to separate the landscape into landforms or landform segments that
have similar use and management requirements. Each map unit is defined by a
unique combination of soil components and/or miscellaneous areas in predictable
proportions. Some components may be highly contrasting to the other components
of the map unit. The presence of minor components in a map unit in no way
diminishes the usefulness or accuracy of the data. The delineation of such
landforms and landform segments on the map provides sufficient information for the
development of resource plans. If intensive use of small areas is planned, onsite
investigation is needed to define and locate the soils and miscellaneous areas.
Soil scientists make many field observations in the process of producing a soil map.
The frequency of observation is dependent upon several factors, including scale of
mapping, intensity of mapping, design of map units, complexity of the landscape,
and experience of the soil scientist. Observations are made to test and refine the
soil -landscape model and predictions and to verify the classification of the soils at
specific locations. Once the soil -landscape model is refined, a significantly smaller
number of measurements of individual soil properties are made and recorded.
These measurements may include field measurements, such as those for color,
depth to bedrock, and texture, and laboratory measurements, such as those for
content of sand, silt, clay, salt, and other components. Properties of each soil
typically vary from one point to another across the landscape.
Observations for map unit components are aggregated to develop ranges of
characteristics for the components. The aggregated values are presented. Direct
measurements do not exist for every property presented for every map unit
component. Values for some properties are estimated from combinations of other
properties.
While a soil survey is in progress, samples of some of the soils in the area generally
are collected for laboratory analyses and for engineering tests. Soil scientists
interpret the data from these analyses and tests as well as the field -observed
characteristics and the soil properties to determine the expected behavior of the
soils under different uses. Interpretations for all of the soils are field tested through
observation of the soils in different uses and under different levels of management.
Some interpretations are modified to fit local conditions, and some new
interpretations are developed to meet local needs. Data are assembled from other
sources, such as research information, production records, and field experience of
specialists. For example, data on crop yields under defined levels of management
are assembled from farm records and from field or plot experiments on the same
kinds of soil.
Predictions about soil behavior are based not only on soil properties but also on
such variables as climate and biological activity. Soil conditions are predictable over
long periods of time, but they are not predictable from year to year. For example,
soil scientists can predict with a fairly high degree of accuracy that a given soil will
have a high water table within certain depths in most years, but they cannot predict
that a high water table will always be at a specific level in the soil on a specific date.
After soil scientists located and identified the significant natural bodies of soil in the
survey area, they drew the boundaries of these bodies on aerial photographs and
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Custom Soil Resource Report
identified each as a specific map unit. Aerial photographs show trees, buildings,
fields, roads, and rivers, all of which help in locating boundaries accurately.
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
MAP LEGEND
Area of Interest (AO!)
Area of Interest (AO1)
Soils
Soil Map Unit Polygons
Soil Map Unit Lines
Soil Map Unit Points
Special Point Features
Blowout
r, _
O
O
v
Borrow Pit
Clay Spot
Closed Depression
Gravel Pit
Gravelly Spot
Landfill
Lava Flow
Marsh or swamp
Mine or Quarry
Miscellaneous Water
Perennial Water
Rock Outcrop
Saline Spot
Sandy Spot
Severely Eroded Spot
Sinkhole
Slide or Slip
Sodic Spot
Spoil Area
Stony Spot
Very Stony Spot
Wet Spot
Other
Special Line Features
Water Features
Streams and Canals
Transportation
Rails
Interstate Highways
US Routes
Major Roads
Local Roads
Background
iair°§1 Aerial Photography
MAP INFORMATION
The soil surveys that comprise your AOI were mapped at
1:24,000.
Please rely on the bar scale on each map sheet for map
measurements.
Source of Map: Natural Resources Conservation Service
Web Soil Survey URL:
Coordinate System: Web Mercator (EPSG:3857)
Maps from the Web Soil Survey are based on the Web Mercator
projection, which preserves direction and shape but distorts
distance and area. A projection that preserves area, such as the
Albers equal-area conic projection, should be used if more
accurate calculations of distance or area are required.
This product is generated from the USDA -MRCS certified data as
of the version date(s) listed below.
Soil Survey Area: Weld County, Colorado, Southern Part
Survey Area Data: Version 21, Sep 1, 2022
Soil map units are labeled (as space allows) for map scales
1:50,000 or larger.
Date(s) aerial images were photographed: Jun 8, 2021 Jun 12,
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.
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Custom Soil Resource Report
Map Unit Legend (Cervi Ranch Infiltration
Soil Map)
Map
Unit Symbol
Map
Unit Name
Acres in AOI
Percent of AOI
49
Osgood
slopes
sand, 0 to 3
percent
124.5
4.5°/0
63
Terry
fine sandy
percent slopes
loam,
3 to 9
35.1
1.3%
69
Valent
slopes
sand,
0 to 3
percent
305.2
11.0%
70
Valent
slopes
sand, 3 to 9
percent
1,948.8
70.0%
71
Valent-Loup
percent slopes
complex,
0 to 9
369.0
13.3%
Totals for Area of Interest
2,782.5
100.0°/0
Map Unit Descriptions (Cervi Ranch
Infiltration Soil Map)
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
49 Osgood sand, 0 to 3 percent slopes
Map Unit Setting
National map unit symbol: 362x
Elevation: 4,680 to 4,900 feet
Mean annual precipitation: 13 to 15 inches
Mean annual air temperature: 46 to 55 degrees F
Frost -free period: 140 to 150 days
Farmland classification: Farmland of statewide importance
Map Unit Composition
Osgood and similar soils: 85 percent
Minor components: 15 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Osgood
Setting
Landform: Plains
Down -slope shape: Linear
Across -slope shape: Linear
Parent material: Eol ian sands
Typical profile
H1 - 0 to 22 inches: sand
H2 - 22 to 34 inches: sandy loam
H3 - 34 to 60 inches: sand
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 (2.00 to 6.00
in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Maximum salinity: Nonsaline to very slightly saline (0.0 to 2.0 mmhos/cm)
Available water supply, 0 to 60 inches: Low (about 4.8 inches)
Interpretive groups
Land capability classification (irrigated): 4e
Land capability classification (nonirrigated): 6e
Hydrologic Soil Group: A
Ecological site: R067BY015CO - Deep Sand
Hydric soil rating: No
Minor Components
Valent
Percent of map unit: 10 percent
Hydric soil rating: No
Custom Soil Resource Report
Dailey
Percent of map unit: 5 percent
Hydric soil rating: No
63 Terry fine sandy loam, 3 to 9 percent slopes
Map Unit Setting
National map unit symbol: 363f
Elevation: 4,500 to 5,000 feet
Mean annual precipitation: 13 to 15 inches
Mean annual air temperature: 46 to 48 degrees F
Frost -free period: 120 to 180 days
Farmland classification: Not prime farmland
Map Unit Composition
Terry and similar soils: 85 percent
Minor components: 15 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Terry
Setting
Landform: Plains
Down -slope shape: Linear
Across -slope shape: Linear
Parent material: Residuum weathered from sandstone
Typical profile
H1 - 0 to 6 inches: fine sandy loam
H2 - 6 to 18 inches: fine sandy loam
H3 - 18 to 37 inches: fine sandy loam
H4 - 37 to 41 inches: weathered bedrock
Properties and qualities
Slope: 3 to 9 percent
Depth to restrictive feature: 20 to 40 inches to paralithic bedrock
Drainage class: Well drained
Runoff class: Medium
Capacity of the most limiting layer to transmit water (Ksat): Moderately low to high
(0.06 to 2.00 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Calcium carbonate, maximum content: 15 percent
Maximum salinity: Nonsaline to very slightly saline (0.0 to 2.0 mmhos/cm)
Available water supply, 0 to 60 inches: Low (about 4.4 inches)
Interpretive groups
Land capability classification (irrigated): 4s
Land capability classification (nonirrigated): 6e
Custom Soil Resource Report
Hydrologic Soil Group: B
Ecological site: R067BY024CO - Sandy Plains
Hydric soil rating: No
Minor Components
Tassel
Percent of map unit: 5
Hydric soil rating: No
Olney
Percent of map unit: 5
Hydric soil rating: No
Otero
Percent of map unit: 5
Hydric soil rating: No
percent
percent
percent
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: I nterd unes
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
C1 - 12 to 30 inches: sand
C2 - 30 to 80 inches: sand
Properties and qualities
Slope: 0 to 3 percent
Depth to restrictive feature: More than 80 inches
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Custom Soil Resource Report
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 (nonirrigated): 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: I nterd unes
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: I nterd unes
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: I nterd unes
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
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
C1 - 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 (nonirrigated): 6e
Hydrologic Soil Group: A
Ecological site: R067BY015CO - Deep Sand, R072XY109KS - Rolling Sands
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Custom Soil Resource Report
Hydric soil rating: No
Minor Components
Dailey
Percent of map unit: 10 percent
Landform: I nterd unes
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
Haxtu n
Percent of map unit: 5 percent
Landform: I nterd unes
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
71—Valent-Loup complex, 0 to 9 percent slopes
Map Unit Setting
National map unit symbol: 2yvrc
Elevation: 4,650 to 4,800 feet
Mean annual precipitation: 12 to 17 inches
Mean annual air temperature: 46 to 52 degrees F
Frost -free period: 130 to 165 days
Farmland classification: Not prime farmland
Map Unit Composition
Valent and similar soils: 55 percent
Loup and similar soils: 30 percent
Custom Soil Resource Report
Minor components: 15 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Valent
Setting
Landform: Hills, dunes
Landform position (two-dimensional): Summit, shoulder, backslope
Landform position (three-dimensional): Nose slope, side slope, crest
Down -slope shape: Convex, linear
Across -slope shape: Linear, convex
Parent material: Noncalcareous eolian sands
Typical profile
A - 0 to 5 inches: sand
AC - 5 to 12 inches: sand
C1 - 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 to very slightly saline (0.1 to 2.0 mmhos/cm)
Available water supply, 0 to 60 inches: Very low (about 2.4 inches)
Interpretive groups
Land capability classification (irrigated): 6e
Land capability classification (nonirrigated): 7s
Hydrologic Soil Group: A
Ecological site: R067BY015CO - Deep Sand
Hydric soil rating: No
Description of Loup
Setting
Landform: Swales on interdunes
Down -slope shape: Concave, linear
Across -slope shape: Concave, linear
Parent material: Sandy eolian deposits
Typical profile
Oi - 0 to 2 inches: slightly decomposed plant material
A - 2 to 16 inches: loamy sand
Cg1 - 16 to 40 inches: loamy sand
Cg2 - 40 to 80 inches: sandy loam
Properties and qualities
Slope: 0 to 3 percent
Depth to restrictive feature: More than 80 inches
Drainage class: Poorly drained
19
Custom Soil Resource Report
Runoff class: Very high
Capacity of the most limiting layer to transmit water (Ksat): High (2.00 to 6.00
in/hr)
Depth to water table: About 0 to 18 inches
Frequency of flooding: None
Frequency of ponding: None
Calcium carbonate, maximum content: 5 percent
Maximum salinity: Nonsaline to very slightly saline (0.1 to 2.0 mmhos/cm)
Available water supply, 0 to 60 inches: Moderate (about 6.1 inches)
Interpretive groups
Land capability classification (irrigated): 4w
Land capability classification (nonirrigated): 6w
Hydrologic Soil Group: A/D
Ecological site: R067BY029CO - Sandy Meadow
Hydric soil rating: Yes
Minor Components
Osgood
Percent of map unit: 5 percent
Landform: I nterd unes
Down -slope shape: Linear
Across -slope shape: Linear
Ecological site: R067BY015CO - Deep Sand
Hydric soil rating: No
Vona
Percent of map unit: 5 percent
Landform: Dunes, hills
Landform position (two-dimensional): Backslope
Landform position (three-dimensional): Side slope
Down -slope shape: Convex, linear
Across -slope shape: Convex, linear
Ecological site: R067BY015CO - Deep Sand
Hydric soil rating: No
Boel
Percent of map unit: 5 percent
Landform: Drainageways, swales
Down -slope shape: Linear, concave
Across -slope shape: Linear, concave
Ecological site: R067BY029CO - Sandy Meadow
Hydric soil rating: No
Soil Information for All Uses
Soil Properties and Qualities
The Soil Properties and Qualities section includes various soil properties and
qualities displayed as thematic maps with a summary table for the soil map units in
the selected area of interest. A single value or rating for each map unit is generated
by aggregating the interpretive ratings of individual map unit components. This
aggregation process is defined for each property or quality.
Soil Erosion Factors
Soil Erosion Factors are soil properties and interpretations used in evaluating the
soil for potential erosion. Example soil erosion factors can include K factor for the
whole soil or on a rock free basis, T factor, wind erodibility group and wind erodibility
index.
K Factor, Whole Soil (Cervi Ranch Infiltration K Factor
Whole Soil Map)
Erosion factor K indicates the susceptibility of a soil to sheet and rill erosion by
water. Factor K is one of six factors used in the Universal Soil Loss Equation
(USLE) and the Revised Universal Soil Loss Equation (RUSLE) to predict the
average annual rate of soil loss by sheet and rill erosion in tons per acre per year.
The estimates are based primarily on percentage of silt, sand, and organic matter
and on soil structure and saturated hydraulic conductivity (Ksat). Values of K range
from 0.02 to 0.69. Other factors being equal, the higher the value, the more
susceptible the soil is to sheet and rill erosion by water.
"Erosion factor Kw (whole soil)" indicates the erodibility of the whole soil. The
estimates are modified by the presence of rock fragments.
Factor K does not apply to organic horizons and is not reported for those layers.
21
40° 19' 7 N 2
40° 11' 30" N
104° 28' 391'W
104° 28' 39" W
Custom Soil Resource Report
Map K Factor, Whole Soil (Cervi Ranch Infiltration K Factor Whole Soil Map)
546000 547000 548000 549000
Map Scale: 1:68,700 if printed on A portrait (8.5" x 11') sheet.
551000 552000
Meters
0 1000 2000 4000 6000
Feet
0 3000 6000 12000 18000
Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 13N WGS84
22
563000
104° 21' 8" W
554000 555000
j
cA
40° 19' 7' N
40° 11' 30" N
Custom Soil Resource Report
Area of Interest (AO!)
Area of Interest (AOl)
)
Soils
Soil Rating Polygons
. 02
. 05
. 10
. 15
. 17
. 20
. 24
. 28
. 32
. 37
. 43
. 49
. 55
. 64
Not rated or not available
Soil Rating Lines
1"0 .02
.05
id .10
. 15
. 17
. 20
r
MAP LEGEND
. 24
. 28
. 32
. 37
id pi .43
. 49
. 55
kiRse .64
Not rated or not available
Soil Rating Points
0
X
1-1
•
•
. 02
. 05
. 10
. 15
. 17
.20
.24
. 28
. 32
. 37
. 43
. 49
. 55
. 64
Not rated or not available
Water Features
Streams and Canals
Transportation
Rails
Interstate Highways
US Routes
Major Roads
Local Roads
Background
Aerial Photography
MAP INFORMATION
The soil surveys that comprise your AOI were mapped at
1:24,000.
Please rely on the bar scale on each map sheet for map
measurements.
Source of Map: Natural Resources Conservation Service
Web Soil Survey URL:
Coordinate System: Web Mercator (EPSG:3857)
Maps from the Web Soil Survey are based on the Web Mercator
projection, which preserves direction and shape but distorts
distance and area. A projection that preserves area, such as the
Albers equal-area conic projection, should be used if more
accurate calculations of distance or area are required.
This product is generated from the USDA -MRCS certified data
as of the version date(s) listed below.
Soil Survey Area: Weld County, Colorado, Southern Part
Survey Area Data: Version 21, Sep 1, 2022
Soil map units are labeled (as space allows) for map scales
1:50,000 or larger.
Date(s) aerial images were photographed: Jun 8, 2021 Jun
12, 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.
23
Custom Soil Resource Report
Table —K Factor, Whole Soil (Cervi Ranch Infiltration K Factor
Whole Soil Map)
Map
unit
symbol
Map unit name
Rating
Acres in AOI
Percent
of AOI
49
Osgood
sand,
percent slopes
0 to 3
.02
124.5
4.5%
63
Terry fine
to 9
sandy
percent
loam,
slopes
3
.20
35.1
1.3%
69
Valent
sand, 0
percent slopes
to
3
.02
305.2
11.0%
70
Valent sand,
percent
slopes
3 to 9
.02
1,948.8
70.0%
71
Valent-Loup
to 9
percent
complex,
slopes
0
.02
369.0
13.3°/0
Totals for Area of Interest
2,782.5
100.0%
Rating Options —K Factor, Whole Soil (Cervi Ranch Infiltration K
Factor Whole Soil Map)
Aggregation Method: Dominant Condition
Component Percent Cutoff.. None Specified
Tie -break Rule: Higher
Layer Options (Horizon Aggregation Method): Surface Layer (Not applicable)
Soil Qualities and Features
Soil qualities are behavior and performance attributes that are not directly
measured, but are inferred from observations of dynamic conditions and from soil
properties. Example soil qualities include natural drainage, and frost action. Soil
features are attributes that are not directly part of the soil. Example soil features
include slope and depth to restrictive layer. These features can greatly impact the
use and management of the soil.
Hydrologic Soil Group (Cervi Ranch Infiltration
Hydrologic Soil Group Map)
Hydrologic soil groups are based on estimates of runoff potential. Soils are
assigned to one of four groups according to the rate of water infiltration when the
soils are not protected by vegetation, are thoroughly wet, and receive precipitation
from long -duration storms.
The soils in the United States are assigned to four groups (A, B, C, and D) and
three dual classes (A/D, B/D, and C/D). The groups are defined as follows:
24
Custom Soil Resource Report
Group A. Soils having a high infiltration rate (low runoff potential) when thoroughly
wet. These consist mainly of deep, well drained to excessively drained sands or
gravelly sands. These soils have a high rate of water transmission.
Group B. Soils having a moderate infiltration rate when thoroughly wet. These
consist chiefly of moderately deep or deep, moderately well drained or well drained
soils that have moderately fine texture to moderately coarse texture. These soils
have a moderate rate of water transmission.
Group C. Soils having a slow infiltration rate when thoroughly wet. These consist
chiefly of soils having a layer that impedes the downward movement of water or
soils of moderately fine texture or fine texture. These soils have a slow rate of water
transmission.
Group D. Soils having a very slow infiltration rate (high runoff potential) when
thoroughly wet. These consist chiefly of clays that have a high shrink -swell
potential, soils that have a high water table, soils that have a claypan or clay layer at
or near the surface, and soils that are shallow over nearly impervious material.
These soils have a very slow rate of water transmission.
If a soil is assigned to a dual hydrologic group (A/D, B/D, or C/D), the first letter is
for drained areas and the second is for undrained areas. Only the soils that in their
natural condition are in group D are assigned to dual classes.
25
40° 19' 7 N 2
40° 11' 30" N
104° 28' 391'W
P
104° 28' 39" W
545000
Vs ,11‘..4.i
Custom Soil Resource Report
Map Hydrologic Soil Group (Cervi Ranch Infiltration Hydrologic Soil Group Map)
546000
547000
548000
549000
545000
546000 547000 548000 549000
550000
551000 552000
563000
554000 555000
Map Scale: 1:68,700 if printed on A portrait (8.5" x 11') sheet.
550000
551000
Meters
0 1000 2000 4000 6000
Feet
0 3000 6000 12000 18000
Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 13N WGS84
26
552000
553000
1
55.4000
1
104° 21' 8" W
555000
j
cA
LID
40° 19' 7' N
40° 11' 30" N
Custom Soil Resource Report
MAP LEGEND
Area of Interest (AO!)
Area of Interest (A01)
Soils
Soil Rating Polygons
A
A/D
B
B/D
C
C/D
D
Not rated or not available
Soil Rating Lines
A
A/D
B
B/D
C/D
D
Not rated or not available
Soil Rating Points
A
A/D
B
B/D
El
MAP INFORMATION
C The soil surveys that comprise your AOI were mapped at
1:24,000.
C/D
D Please rely on the bar scale on each map sheet for map
measurements.
Not rated or not available
Water Features
Streams and Canals
Transportation
Rails
Interstate Highways
US Routes
Major Roads
Local Roads
Background
741*
,° Aerial Photography
Source of Map: Natural Resources Conservation Service
Web Soil Survey URL:
Coordinate System: Web Mercator (EPSG:3857)
Maps from the Web Soil Survey are based on the Web Mercator
projection, which preserves direction and shape but distorts
distance and area. A projection that preserves area, such as the
Albers equal-area conic projection, should be used if more
accurate calculations of distance or area are required.
This product is generated from the USDA -MRCS certified data as
of the version date(s) listed below.
Soil Survey Area: Weld County, Colorado, Southern Part
Survey Area Data: Version 21, Sep 1, 2022
Soil map units are labeled (as space allows) for map scales
1:50,000 or larger.
Date(s) aerial images were photographed: Jun 8, 2021 Jun 12,
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.
27
Custom Soil Resource Report
Table Hydrologic Soil Group (Cervi Ranch Infiltration
Hydrologic Soil Group Map)
Map
unit
symbol
Map unit name
Rating
Acres in AOI
Percent
of AOI
49
Osgood
sand,
percent slopes
0 to 3
A
124.5
4.5%
63
Terry fine
to 9
sandy
percent
loam,
slopes
3
B
35.1
1.3%
69
Valent
sand, 0
percent slopes
to
3
A
305.2
11.0%
70
Valent sand,
percent
slopes
3 to 9
A
1,948.8
70.0%
71
Valent-Loup
to 9
percent
complex,
slopes
0
A
369.0
13.3°/0
Totals for Area of Interest
2,782.5
100.0%
Rating Options —Hydrologic Soil Group (Cervi Ranch Infiltration
Hydrologic Soil Group Map)
Aggregation Method: Dominant Condition
Component Percent Cutoff.. None Specified
Tie -break Rule: Higher
Depth to Any Soil Restrictive Layer (Cervi Ranch
Infiltration Depth to Restrictive Layer Map)
A "restrictive layer" is a nearly continuous layer that has one or more physical,
chemical, or thermal properties that significantly impede the movement of water and
air through the soil or that restrict roots or otherwise provide an unfavorable root
environment. Examples are bedrock, cemented layers, dense layers, and frozen
layers.
This theme presents the depth to any type of restrictive layer that is described for
each map unit. If more than one type of restrictive layer is described for an
individual soil type, the depth to the shallowest one is presented. If no restrictive
layer is described in a map unit, it is represented by the "greater than 200" depth
class.
This attribute is actually recorded as three separate values in the database. A low
value and a high value indicate the range of this attribute for the soil component. A
"representative" value indicates the expected value of this attribute for the
component. For this soil property, only the representative value is used.
28
Custom Soil Resource Report
Map Depth to Any Soil Restrictive Layer (Cervi Ranch Infiltration Depth to Restrictive ...
Custom Soil Resource Report
MAP LEGEND
Area of Interest (AO!)
Area of Interest (AO1)
Soils
Soil Rating Polygons
0-25
25 - 50
50 - 100
100 - 150
150 - 200
> 200
Not rated or not available
Soil Rating Lines
ot2,;su 0 - 25
11 25 - 50
50 - 100
100 - 150
150 - 200
Hie > 200
Not rated or not available
Soil Rating Points
0
0
0
•
0-25
25 - 50
50 - 100
100 - 150
150 - 200
> 200
Not rated or not available
Water Features
Streams and Canals
Transportation
Rails
Interstate Highways
US Routes
Major Roads
Local Roads
Background
ifrahticAerial Photography
MAP INFORMATION
The soil surveys that comprise your AOI were mapped at
1:24,000.
Please rely on the bar scale on each map sheet for map
measurements.
Source of Map: Natural Resources Conservation Service
Web Soil Survey URL:
Coordinate System: Web Mercator (EPSG:3857)
Maps from the Web Soil Survey are based on the Web Mercator
projection, which preserves direction and shape but distorts
distance and area. A projection that preserves area, such as the
Albers equal-area conic projection, should be used if more
accurate calculations of distance or area are required.
This product is generated from the USDA -MRCS certified data as
of the version date(s) listed below.
Soil Survey Area: Weld County, Colorado, Southern Part
Survey Area Data: Version 21, Sep 1, 2022
Soil map units are labeled (as space allows) for map scales
1:50,000 or larger.
Date(s) aerial images were photographed: Jun 8, 2021 Jun 12,
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
Table Depth to Any Soil Restrictive Layer (Cervi Ranch
Infiltration Depth to Restrictive Layer Map)
Map
unit
symbol
Map unit name
Rating (centimeters)
Acres in AOI
Percent
of AOI
49
Osgood
sand,
percent slopes
0 to 3
>200
124.5
4.5%
63
Terry fine
to 9
sandy
percent
loam,
slopes
3
94
35.1
1.3%
69
Valent
sand, 0
percent slopes
to
3
>200
305.2
11.0%
70
Valent sand,
percent
slopes
3 to 9
>200
1,948.8
70.0°/0
71
Valent-Loup
to 9
percent
complex,
slopes
0
>200
369.0
13.3%
Totals for Area of Interest
2,782.5
100.0%
Rating Options —Depth to Any Soil Restrictive Layer (Cervi
Ranch Infiltration Depth to Restrictive Layer Map)
Units of Measure: centimeters
Aggregation Method: Dominant Component
Component Percent Cutoff: None Specified
Tie -break Rule: Lower
Interpret Nulls as Zero: No
Water Features
Water Features include ponding frequency, flooding frequency, and depth to water
table.
Depth to Water Table (Cervi Ranch Infiltration Depth to
Water Table Map)
"Water table" refers to a saturated zone in the soil. It occurs during specified
months. Estimates of the upper limit are based mainly on observations of the water
table at selected sites and on evidence of a saturated zone, namely grayish colors
(redoximorphic features) in the soil. A saturated zone that lasts for less than a
month is not considered a water table.
This attribute is actually recorded as three separate values in the database. A low
value and a high value indicate the range of this attribute for the soil component. A
31
Custom Soil Resource Report
"representative" value indicates the expected value of this attribute for the
component. For this soil property, only the representative value is used.
Custom Soil Resource Report
Map Depth to Water Table (Cervi Ranch Infiltration Depth to Water Table Map)
Custom Soil Resource Report
MAP LEGEND
Area of Interest (AO!)
Area of Interest (AO1)
Soils
Soil Rating Polygons
0-25
25 - 50
50 - 100
100 - 150
150 - 200
> 200
Not rated or not available
Soil Rating Lines
ot2,;su 0 - 25
11 25 - 50
50 - 100
100 - 150
150 - 200
Hie > 200
Not rated or not available
Soil Rating Points
0
0
0
•
0-25
25 - 50
50 - 100
100 - 150
150 - 200
> 200
Not rated or not available
Water Features
Streams and Canals
Transportation
Rails
Interstate Highways
US Routes
Major Roads
Local Roads
Background
ifrahticAerial Photography
MAP INFORMATION
The soil surveys that comprise your AOI were mapped at
1:24,000.
Please rely on the bar scale on each map sheet for map
measurements.
Source of Map: Natural Resources Conservation Service
Web Soil Survey URL:
Coordinate System: Web Mercator (EPSG:3857)
Maps from the Web Soil Survey are based on the Web Mercator
projection, which preserves direction and shape but distorts
distance and area. A projection that preserves area, such as the
Albers equal-area conic projection, should be used if more
accurate calculations of distance or area are required.
This product is generated from the USDA -MRCS certified data as
of the version date(s) listed below.
Soil Survey Area: Weld County, Colorado, Southern Part
Survey Area Data: Version 21, Sep 1, 2022
Soil map units are labeled (as space allows) for map scales
1:50,000 or larger.
Date(s) aerial images were photographed: Jun 8, 2021 Jun 12,
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.
34
Custom Soil Resource Report
Table Depth to Water Table (Cervi Ranch Infiltration Depth to
Water Table Map)
Map
unit
symbol
Map unit name
Rating (centimeters)
Acres in AOI
Percent
of AOI
49
Osgood
sand,
percent slopes
0 to 3
>200
124.5
4.5%
63
Terry fine
to 9
sandy
percent
loam,
slopes
3
>200
35.1
1.3%
69
Valent
sand, 0
percent slopes
to
3
>200
305.2
11.0%
70
Valent sand,
percent
slopes
3 to 9
>200
1,948.8
70.0%
71
Valent-Loup
to 9
percent
complex,
slopes
0
>200
369.0
13.3°/0
Totals for Area of Interest
2,782.5
100.0%
35
Custom Soil Resource Report
Rating Options Depth to Water Table (Cervi Ranch Infiltration
Depth to Water Table Map)
Units of Measure: centimeters
Aggregation Method: Dominant Component
Component Percent Cutoff. None Specified
Tie -break Rule: Lower
Interpret Nulls as Zero: No
Beginning Month: January
Ending Month: December
36
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.nres.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=nres142p2_053577
Soil Survey Staff. 2010. Keys to soil taxonomy. 11th edition. U.S. Department of
Agriculture, Natural Resources Conservation Service. http://
www.nres.usda.gov/wps/portal/nres/detail/national/soils/?cid=nres142p2_053580
Tiner, R.W., Jr. 1985. Wetlands of Delaware. U.S. Fish and Wildlife Service and
Delaware Department of Natural Resources and Environmental Control, Wetlands
Section.
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=nres 142 p2_053374
U nited States Department of Agriculture, Natural Resources Conservation Service.
N ational range and pasture handbook. http://www.nres.usda.gov/wps/portal/nres/
detail/national/landuse/rangepastu re/?cid=stelprdb 1043084
37
Custom Soil Resource Report
U nited States Department of Agriculture, Natural Resources Conservation Service.
N ational soil survey handbook, title 430 -VI. http://www.nres.usda.gov/wps/portal/
nres/detail/soils/scientists/?cid=nres142p2 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=nres 142p2_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
38
DWG - DRAINAGE PLAN \CERVI COMBIN ED.dwg, 4/13/2023 1:55:31 PM, kgales
K:WNADARK0\2017\2017_147_CERVI_RANCH T4N_R63W\DRAINAGE STUDY '2021 TO PRESENTIOV
Surface Roughening (SRI
2" TO
4" DEEP
TRAT: IN Oft
IUPPO 2" TO 4" DEEP
WITH •B" MAXIMUM SPACING
PARALLEL TO CONTOURS
SR -1, SURFACE ROUGHENING
R 2, SURFACE_ROUGHENING
4I" ro„
DEEP
rtisidng or ripping can he
e ter t1,,�j, 6-inciaes per landowner
irest.
ROUGHENED ROWS SHALL DI£ 4" TO 6.
/ `� DEEP WITH 64 MAXIMUICtI SPACM PARALLEL
TO CONTOURS
FO'I+�� LOW SLOPES; iCILESS THAN. 1
5R
Diversion Ditch and Berm
DD -I Temporary Diversion Ditch and Berm
1.5 -ft Tall (min)
Tee ora
--4-ft Wide (min)
FLOW
�r
II'
NOTES:
DIVERSION SWALE SHALL SLOPE BETIVEEN
0.50% ,AND 8% TO A STABILIZED OUTLET
SUCH AS A SEDIMENT TRAP
ALL BERMS MUST BE FULLY COMPACTED SO
THAT THERE IS NO LOOSE SOIL.
and Permanent Seedin TS/PS
Table TS/PS-1I. Minimum Drill Seeding Rates for Various Temporary Annual Grasses
Speeiee
(Common name)
I. Oats
Growth
Season"
Founds of
Pare Live Seed
(PI_Symieree
Cool 35 - 50
Planting
Depth
(Indies)
1-2
2. Spring wheat
Cool 2.5 - 35
1-2
3. Spring barley
4, Annual ryegrass
Cool
25 - 35
Cool 10 = 15
1-2
1
5. Millet
6. Sunangrass
'Mann 3 _ 15
1/2.- "4
5-10
7. Sorghurn
War.
5-10
' -%
8, Wittier wheat
Cooi 2.0-35
1 2.
9. Winter barley
Cool 2.0-35
1 2
10. winter rye
Cool 20-35
1 2
11. Triticale
Coal 25--40
1-2
b
Successful seeding of annual grass resulting in adequate pkut growth will
usually psoduce enough dead -plant residue to provide protection from
wind and water erosion for an additional year. This assumes that the cover
is not disturbed or mowed closer than 8 inches..
Hydraulic seeding may be substituted for drilling only where slopes are
steeper than 3:1 or where .access limitations exist. When hydraulic
seeding as used, hydraulic mulching should be applied as a _separate
apetrtion, when practical, to prevent the ids from being encapsulated in
the rimIck
!niggler', if consistently applied, may extend the use Of coot season
species during the summer months.
Seeding rates should be doubled if seed is broadcast} or increased by 50
percent if done using. a Brillion Drill or by hydraulic seeding.
CERVI DEVELOPMENT
GENERAL NOTES:
Kerr-McGee Oil &
Gas Onshore LP
1099 18th Street
Denver, Colorado 80202
BMP TYPICALS
SCALE:
VARIES
JOB NUMBER:
17-197
DRAFTED BY:
KMG
PAGE:
1OF2
DATE:
4/14/23
REVISED:
DWG - DRAINAGE PLAN \CERVI COMBIN ED.dwg, 4/13/2023 2:03:28 PM, kgales
K:WNADARK0\2017\2017_147_CERVI_RANCH T4N_R63W\DRAINAGE STUDY '2021 TO PRESENT\OV
Sediment Trap
Table 1. Sediment Trap Sizing Chart for 4:1 Fill Slopes, 3' Deep, (ft^2)
Approximate
Pad Fill
Height,
B (ft)
2
4
6
8
10.
12
Total Ditch and Berm
Diversion Length (Al +A2),
Fad Fill Portion, Diverting
Low Point Sediment Trap(ft)
In
to
Area
of 3.0' Deep
Sediment
Trap
(ft^2)
200
100.00
100.0'10
100.00
' 001.010
1301-00
150.00
300
100.00
100.00
120.00
150.010
190.00
230.00
400
100.00
10111.010
15'0.001
200.0
250.00
?700-001
500
100..00
130.00
190.0(1
250.00
320.00
:.380.60
600
1001.00
150.00
230.00
300.00
:380.10
400.00
700
100.00
100.00
2'7'0.00
350.00
44'0.00
530.00
800
100.60
200.00
300.010
400.00
500.00
600.00
000
120.00
230.00
340.00
450.00
6801.00
570.00
1000
130.00
250.00
:38O.00
500.00
5301-00
750.00
1100
140.00
280.00
4201.00
550.001
690.00
830.0'0
1200
15'0..00
300.00
4501.00
600.00
750'1.00
:00.010
1300
170.00
330.00
40'0.00
65'0.00
820.00
080.00
1400
180.60
350.00
530.00
700.00
8807.00
1050.00
1500
190.00
380.001
750.00
940.0O
1130_00P
570.00
1600
200.00
4016.00
000.00
800.00)
'1000.00
1200.00
1700
22'0.00
430.00
6401.00
850.00r
107'0.00
1280.00
1800
230.00
450.00
680.010
►00.001
1130.00
1350.00
1'900
240.00
480.00
720.00
950.00
1190.00
1430.00
2000
2511.00
500.00
750.00
10100.00
1250.00
1500.00
• Ditch and berm diversion length used to size sediment trap is measured only along the fill
portion of the pad_
• Measure along the outer edge of the diversion berm_
• If multiple low paint sediment traps are used because of site conditions, only include the
diversion length draining to the sediment trap being constructed when sizing
• Approximate Pad. fall Height (B) shall be measured at the loci- point, or where the
sediment trap is being constructed, anti rounded tap to the nearest Mter-al in Table 1_
:Sediment Trap
Curt or fill
Embankment
Construct spillway ar nerea
straw bales, wattles an War
silt fence (see detailed
jekTh
Ifin7ln_
ti4T TO SFAi F
1
Adequate volume to
contain design -flows
RiORap
til used)
Optional
Varies
Come Aggregate
•
, Size of Trap
Va.ries.__..... -
Merap (iR) or
Ercnainn ennirnl
Blanket (ECB)
optional
Stake (installed to at _
least 164' below grade) '
Silt fence installation
(optional)
Stake (installed to at
least 12' below grade)
Straw bales or
wattles
Rip rap or erasion
control blanket
£rnall Rtprap
(option, )
Cut or nil
-Embankment
- Geolextrie
Weir Crest
Anchor trench ,_• .:....
Morapor gravel (optional).-;
Max. pendod depth —
Sediment Trap
FLOW
EXISTING GROU ND -"1
ANCHOR EROSION
CONTROL BLANKET
BELOW GRADE
CROSS SECTION A -A
LO'WPOINT WEIR, (-1' LOUVER
THAN SURROUNDING BERM)
—'10' MIN
CIX..C4X0X.
9" MIN SEDIMENT CONTROL
LOG PROTECTION AT BASE
OF BERM
EXCAVATE FOR REQUIRED STORAGE
(TYPICAL 1 MO' x 3' DEEP FROM TOP
OF BERM)
EROSION CONTROL BLANKET
COVERING LOWPOINT WEIR
nL1 ��L
9" MIN SEDIMENT CONTROL
LOG PROTECTION AT BASE
OF BERM
A'
UNDISTURBED AREA
GENERAL NOTES:
Kerr-McGee Oil &
Gas Onshore LP
1099 18th Street
Denver, Colorado 80202
CERVI DEVELOPMENT
BMP TYPICALS
SCALE:
VARIES
JOB NUMBER: 17-197
DRAFTED BY:
KMG
PAGE:
2OF2
DATE:
4/14/23
REVISED:
Hello