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Home My WebLink About20253147 USDA United States A product of the National CustomSo . Resource Department of Cooperative Soil Survey , Agriculture a joint effort of the United Report for States Department of Agriculture and other We d County , Federal agencies , State Natural agencies including the Resources Agricultural Experiment C o orado / Conservation Stations and local Service participants Southern Part , _ • - ill 1. . if 111111.a1.11111 1 ile lit : 4 II- 1 nIP- Ws 1 4 ' "' is I I i iti II bl I 4P lt- 0 i S.115 f 1 A . rreija --- z .a a • is F 11 III 1 III` I III - I 1 Illitts 'fra 4- II I lc I � I • 4 tat NIIIR III III � , Tyy S 1 \\ hc. I cli i . 1 IP , - , Inc o too _ I1 criI �� r ril 1 ot $. I \11 i I 1 , ._ ..... Al c S c - . 1 larks - 41(11; 1 R I I � I III IS r • II I IIII ` II I le \if li f w 11 ti gall I I i 4 tve .. : it October 31 , 2025 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 / ocator / 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 ( Soil ) 9 Legend 10 Map Unit Legend ( Soil ) 11 Map Unit Descriptions ( Soil ) 11 Weld County, Colorado , Southern Part 13 21 — Dacono clay loam , 0 to 1 percent slopes 13 Soil Information for All Uses 15 Suitabilities and Limitations for Use 15 Building Site Development 15 Dwellings With Basements ( Rating ) 15 Dwellings Without Basements ( Rating2 ) 19 Small Commercial Buildings ( Rating3 ) 23 References 28 4 How So '� Surveys Are Made Soil surveys are made to provide information about the soils and miscellaneous areas in a specific area . They include a description of the soils and miscellaneous areas and their location on the landscape and tables that show soil properties and limitations affecting various uses . Soil scientists observed the steepness , length , and shape of the slopes ; the general pattern of drainage ; the kinds of crops and native plants ; and the kinds of bedrock . They observed and described many soil profiles . A soil profile is the sequence of natural layers , or horizons , in a soil . The profile extends from the surface down into the unconsolidated material in which the soil formed or from the surface down to bedrock . The unconsolidated material is devoid of roots and other living organisms and has not been changed by other biological activity . Currently , soils are mapped according to the boundaries of major land resource areas ( MLRAs ) . MLRAs are geographically associated land resource units that share common characteristics related to physiography , geology , climate , water resources , soils , biological resources , and land uses ( USDA , 2006 ) . Soil survey areas typically consist of parts of one or more MLRA . The soils and miscellaneous areas in a survey area occur in an orderly pattern that is related to the geology , landforms , relief , climate , and natural vegetation of the area . Each kind of soil and miscellaneous area is associated with a particular kind of landform or with a segment of the landform . By observing the soils and miscellaneous areas in the survey area and relating their position to specific segments of the landform , a soil scientist develops a concept , or model , of how they were formed . Thus , during mapping , this model enables the soil scientist to predict with a considerable degree of accuracy the kind of soil or miscellaneous area at a specific location on the landscape . Commonly , individual soils on the landscape merge into one another as their characteristics gradually change . To construct an accurate soil map , however , soil scientists must determine the boundaries between the soils . They can observe only a limited number of soil profiles . Nevertheless , these observations , supplemented by an understanding of the soil - vegetation - landscape relationship , are sufficient to verify predictions of the kinds of soil in an area and to determine the boundaries . Soil scientists recorded the characteristics of the soil profiles that they studied . They noted soil color , texture , size and shape of soil aggregates , kind and amount of rock fragments , distribution of plant roots , reaction , and other features that enable them to identify soils . After describing the soils in the survey area and determining their properties , the soil scientists assigned the soils to taxonomic classes ( units ) . Taxonomic classes are concepts . Each taxonomic class has a set of soil characteristics with precisely defined limits . The classes are used as a basis for comparison to classify soils systematically . Soil taxonomy , the system of taxonomic classification used in the United States , is based mainly on the kind and character of soil properties and the arrangement of horizons within the profile . After the soil 5 Custom Soil Resource Report scientists classified and named the soils in the survey area , they compared the individual soils with similar soils in the same taxonomic class in other areas so that they could confirm data and assemble additional data based on experience and research . The objective of soil mapping is not to delineate pure map unit components ; the objective is to separate the landscape into landforms or landform segments that have similar use and management requirements . Each map unit is defined by a unique combination of soil components and / or miscellaneous areas in predictable proportions . Some components may be highly contrasting to the other components of the map unit . The presence of minor components in a map unit in no way diminishes the usefulness or accuracy of the data . The delineation of such landforms and landform segments on the map provides sufficient information for the development of resource plans . If intensive use of small areas is planned , onsite investigation is needed to define and locate the soils and miscellaneous areas . S oil 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 . S ome 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 . P redictions about soil behavior are based not only on soil properties but also on such variables as climate and biological activity . Soil conditions are predictable over long periods of time , but they are not predictable from year to year . For example , soil scientists can predict with a fairly high degree of accuracy that a given soil will have a high water table within certain depths in most years , but they cannot predict that a high water table will always be at a specific level in the soil on a specific date . After soil scientists located and identified the significant natural bodies of soil in the survey area , they drew the boundaries of these bodies on aerial photographs and 6 Custom Soil Resource Report identified each as a specific map unit . Aerial photographs show trees , buildings , fields , roads , and rivers , all of which help in locating boundaries accurately. 7 Soil Map The soil map section includes the soil map for the defined area of interest , a list of soil map units on the map and extent of each map unit , and cartographic symbols displayed on the map . Also presented are various metadata about data used to produce the map , and a description of each soil map unit . 8 Custom Soil Resource Report cn Soil Map ( Soil ) kr a. Icrcr rt 515310 515330 515350 515370 515390 515410 515430 515450 515470 515490 40 ° 10 ' 56 ' 1 N 1 40 ° 10 ' 56 " N r\ f li t R r ligIb 11 t 4 [is 1 is • i . • - ID - -". OW Ili 1 \ - - 1\\Iiit\ I P. at§ lilt , riii1 . _ CI , 85 4111P 4.71 Ail 1 C P I R lir 1 • a 0 e .... _ ,(8 ' 1 1 or if EB ' lir,' Q 1 _ lamas a •1,, 'b I le raj • 4* I I I 6 _ - _ e i Soil Map may na be , a f is sca e : - - n 400 10 ' 529 N I I I I I _ a I 40 ° 10 ' 52 " N 515310 515330 515350 515370 515390 515410 515430 51545) 515470 515490 ri 13. Map Scale : 1 : 887 if printed on A landscape ( 11 " x 8 . 5 " ) sheet . c) Meters Nvt 0 10 20 40 60 , Feet 0 40 80 160 240 Map projection : Web Mercator Corner coordinates : WGS84 Edge tics : UTM Zone 13N WGS84 9 Custom Soil Resource Report MAP LEGEND MAP INFORMATION Area of Interest ( AOI ) 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 g pp g y 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 Major Roads Coordinate System : Web Mercator ( EPSG : 3857 ) Landfill Local Roads Maps from the Web Soil Survey are based on the Web Mercator Lava Flow Background projection , which preserves direction and shape but distorts distance and area . A projection that preserves area , such as the Marsh or swamp +1 � 4r ° 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 0 Perennial Water of the version date ( s ) listed below . Rock Outcrop Soil Survey Area : Weld County , Colorado , Southern Part + Saline Spot Survey Area Data : Version 24 , Aug 29 , 2025 ' ` � � 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,\,s. Slide or Slip 2021 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 . 10 Custom Soil Resource Report MapLegendUnit ( So ' Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI 21 Dacono clay loam , 0 to 1 3 . 4 100 . 0 % percent slopes Totals for Area of Interest 3 . 4 100 . 0 % ap Unit Descr pt ons 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 u p 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 n oncontrasting , or similar , components . They may or may not be mentioned in a particular map unit description . Other minor components , however , have properties and behavioral characteristics divergent enough to affect use or to require different management . These are called contrasting , or dissimilar , components . They generally are in small areas and could not be mapped separately because of the scale used . Some small areas of strongly contrasting soils or miscellaneous areas are identified by a special symbol on the maps . If included in the database for a given area , the contrasting minor components are identified in the map unit descriptions along with some characteristics of each . A few areas of minor components may not have been observed , and consequently they are not mentioned in the descriptions , especially where the pattern was so complex that it was impractical to make enough observations to identify all the soils and miscellaneous areas on the landscape . The presence of minor components in a map unit in no way diminishes the u sefulness 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 . 11 Custom Soil Resource Report An identifying symbol precedes the map unit name in the map unit descriptions . Each description includes general facts about the unit and gives important soil properties and qualities . S oils 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 . S oils 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 . S ome 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 . S ome surveys include miscellaneous areas . Such areas have little or no soil material and support little or no vegetation . Rock outcrop is an example . 12 Custom Soil Resource Report Weld County, Colorado , Southern Part 21 Dacono clay loam , 0 to 1 percent slopes Map Unit Setting National map unit symbol : 361 y Elevation : 4 , 550 to 4 , 970 feet Mean annual precipitation : 14 to 18 inches Mean annual air temperature : 48 to 52 degrees F Frost - free period : 140 to 160 days Farmland classification : Prime farmland if irrigated Map Unit Composition Dacono and similar soils : 85 percent Minor components : 15 percent Estimates are based on observations , descriptions , and transects of the mapunit . Description of Dacono Setting Landform : Terraces Down - slope shape : Linear Across - slope shape : Linear Parent material : Mixed alluvium Typical profile H1 - 0 to 12 inches : clay loam H2 - 12 to 21 inches : clay loam H3 - 21 to 27 inches : clay loam H4 - 27 to 60 inches : very gravelly sand Properties and qualities Slope : 0 to 1 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 ( 0 . 20 to 0 . 60 in / hr ) Depth to water table : More than 80 inches Frequency of flooding : None Frequency of ponding : None Calcium carbonate , maximum content: 15 percent Maximum salinity: Nonsaline to very slightly saline ( 0 . 0 to 2 . 0 mmhos / cm ) Available water supply, 0 to 60 inches : Moderate ( about 6 . 3 inches ) Interpretive groups Land capability classification (irrigated) : 2s Land capability classification (nonirrigated) : 3s Hydrologic Soil Group : C Ecological site : R067BY042C0 - Clayey Plains Hydric soil rating : No Minor Components Heldt Percent of map unit: 5 percent 13 Custom Soil Resource Report Hydric soil rating : No Nunn Percent of map unit: 5 percent Hydric soil rating : No Altvan Percent of map unit: 5 percent Hydric soil rating : No 14 Soil Information for All Uses Sulab t es 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 e valuating soil suitability and identifying soil limitations for various construction purposes . As part of the interpretation process , the rating applies to each soil in its described condition and does not consider present land use . Example interpretations can include corrosion of concrete and steel , shallow excavations , dwellings with and without basements , small commercial buildings , local roads and streets , and lawns and landscaping . Dwellings With Basements ( Rating ) ENG - Engineering Dwellings are single - family houses of three stories or less . For dwellings with basements , the foundation is assumed to consist of spread footings of reinforced concrete built on undisturbed soil at a depth of about 7 feet . 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 e xcavation and construction costs . The properties that affect the load - supporting capacity include depth to a water table , ponding , flooding , subsidence , linear e xtensibility ( 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 . 15 Custom Soil Resource Report The ratings are both verbal and numerical . Rating class terms indicate the extent to which the soils are limited by all of the soil features that affect the specified use . " Not limited " indicates that the soil has features that are very favorable for the specified use . Good performance and very low maintenance can be expected . " Somewhat limited " indicates that the soil has features that are moderately favorable for the specified use . The limitations can be overcome or minimized by special planning , design , or installation . Fair performance and moderate maintenance can be expected . " Very limited " indicates that the soil has one or more features that are unfavorable for the specified use . The limitations generally cannot be overcome without major soil reclamation , special design , or expensive installation procedures . Poor performance and high maintenance can be expected . Numerical ratings indicate the severity of individual limitations . The ratings are shown as decimal fractions ranging from 0 . 01 to 1 . 00 . They indicate gradations between the point at which a soil feature has the greatest negative impact on the use ( 1 . 00 ) and the point at which the soil feature is not a limitation ( 0 . 00 ) . The map unit components listed for each map unit in the accompanying Summary by Map Unit table in Web Soil Survey or the Aggregation Report in Soil Data Viewer are determined by the aggregation method chosen . An aggregated rating class is shown for each map unit . The components listed for each map unit are only those that have the same rating class as listed for the map unit . The percent composition of each component in a particular map unit is presented to help the user better understand the percentage of each map unit that has the rating presented . Other components with different ratings may be present in each map unit . The ratings for all components , regardless of the map unit aggregated rating , can be viewed by generating the equivalent report from the Soil Reports tab in Web Soil Survey or from the Soil Data Mart site . Onsite investigation may be needed to validate these interpretations and to confirm the identity of the soil on a given site . 16 Custom Soil Resource Report Map Dwellings With Basements ( Rating ) Icrcr r 515310 515330 515350 515370 515390 515410 515430 515450 515470 515490 40 ° 10 ' 56 „ N _ } , I I 1 40 ° 10 ' 56 " N II .• it IL Sai Vitt ' - e , ' I A, ii .. .0 __ _ _ _ , le + ilika Ill\ 1 Jr aril . . . w itii gcl .1 [ ! 85 i 00li. CA i b alli r .. "We ` - _ — f � a C 411, • r + Fel Ai � - iV - or1 I 1 el - Wilk -i — vc- cir N ! - * a6 } li :lab - - 1 1 • Niii ! dit - L i I 1 . - a awls` - - - - - ' . ' , - s i _ _ _ - - _ - Soil Map may tit be ' aIc at fh ' i_s scale . _ ` _ _ ` < r7. 1 • 40 ° 10 ' 52 „ N I I I I . I i I L � " u L. at 1 10 ' 52 " N 515310 515330 515350 515370 515390 515410 515430 5154a) 515470 515490 ri Map Scale : 1 : 887 if printed on A landscape ( 11 " x 8 . 5 " ) sheet , c) Meters 0 Nyr 0 10 20 40 60 rt , Feet 0 40 80 160 240 Map projection : Web Mercator Corner coordinates : WGS84 Edge tics : UTM Zone 13N WGS84 17 Custom Soil Resource Report MAP LEGEND MAP INFORMATION Area of Interest ( AOI ) Background The soil surveys that comprise your AOI were mapped at Area of Interest ( AOI ) Aerial Photography 1 . 24 , 000 . Soils Soil Rating Polygons Warning : Soil Map may not be valid at this scale . I Very limited Enlargement of maps beyond the scale of mapping can cause I Somewhat limited misunderstanding of the detail of mapping and accuracy of soil I Not limited line placement . The maps do not show the small areas of contrasting soils that could have been shown at a more detailed I Not rated or not available scale . S oil Rating Lines o ; Very limited Please rely on the bar scale on each map sheet for map measurements . d 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 ) S oil Rating Points Very limited Maps from the Web Soil Survey are based on the Web Mercator projection , which preserves direction and shape but distorts S omewhat limited distance and area . A projection that preserves area , such as the Not limited Albers equal - area conic projection , should be used if more accurate calculations of distance or area are required . N ot rated or not available Water Features This product is generated from the USDA - NRCS certified data as Streams and Canals of the version date ( s ) listed below . Transportation Soil Survey Area : Weld County , Colorado , Southern Part Rails Survey Area Data : Version 24 , Aug 29 , 2025 Interstate Highways Soil map units are labeled ( as space allows ) for map scales U S 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 . Asa result , some minor shifting of map unit boundaries may be evident . 18 Custom Soil Resource Report Tables — Dwellings With Basements ( Rating ) Map unit Map unit name Rating Component Rating reasons Acres in AOI Percent of AOI symbol name ( percent ) ( numeric values ) 21 Dacono clay Somewhat Dacono ( 85 % ) Shrink - swell 3 . 4 100 . 0 % loam , 0 to 1 limited ( 0 . 00 ) percent slopes Totals for Area of Interest 3 . 4 100 . 0 % Rating Acres in AOI Percent of AOI Somewhat limited 3 . 4 100 . 0 % Totals for Area of Interest 3 . 4 100 . 0 % Rating Options — Dwellings With Basements ( Rating ) Aggregation Method : Dominant Condition Component Percent Cutoff.• None Specified Tie - break Rule : Higher Dwellings Without Basements ( RaIng2 ) ENG - Engineering 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 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 19 Custom Soil Resource Report 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 . 20 Custom Soil Resource Report Map Dwellings Without Basements ( Rating2 ) kr Icrcr rt 515310 515330 515350 515370 515390 515410 515430 515450 515470 515490 40 ° 7 0 ' 56 „ N _ 1 40 ° 10 ' 56 " N w z 11 . . w i ... .ar __ _ . . , lie + lika la ' - .-- _ it • MIL ' 1 \ ill I I 1r ci, r . ---1 tir CI , _ N. , , ;7- , , elialt TS 85 1 da CA b alli f .. . co r .. "We ` -7- ij410_ — f � a C 411, • r + NWl S'tfi 10 AI ;; 9" ' All __ - or i - _ , ' - - - *I' OS -i _ , ._ cyr 4 , dit - lab - - 1 1 i lagt - Per 0 Soil Map may nit be ' alicr at th!IF ' i_s scale . _ ` _ _ ` < r 40 ° 7 0 52 N I I I I . I I I L � " u L 40 ° 10 ' 52 " N 515310 515330 515350 515370 515390 515410 515430 51545D 515470 515490 ri 13. Map Scale : 1 : 887 if printed on A landscape ( 11 " x 8 . 5 " ) sheet , c) Meters Nyr 0 10 20 40 60 rt , Feet 0 40 80 160 240 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 ( AOI ) Background The soil surveys that comprise your AOI were mapped at Area of Interest ( AOI ) Aerial Photography 1 . 24 , 000 . Soils Soil Rating Polygons Warning : Soil Map may not be valid at this scale . I Very limited Enlargement of maps beyond the scale of mapping can cause I Somewhat limited misunderstanding of the detail of mapping and accuracy of soil I Not limited line placement . The maps do not show the small areas of contrasting soils that could have been shown at a more detailed I Not rated or not available scale . S oil Rating Lines o ; Very limited Please rely on the bar scale on each map sheet for map measurements . d 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 ) S oil Rating Points Very limited Maps from the Web Soil Survey are based on the Web Mercator projection , which preserves direction and shape but distorts S omewhat limited distance and area . A projection that preserves area , such as the Not limited Albers equal - area conic projection , should be used if more accurate calculations of distance or area are required . N ot rated or not available Water Features This product is generated from the USDA - NRCS certified data as Streams and Canals of the version date ( s ) listed below . Transportation Soil Survey Area : Weld County , Colorado , Southern Part Rails Survey Area Data : Version 24 , Aug 29 , 2025 Interstate Highways Soil map units are labeled ( as space allows ) for map scales U S 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 . Asa result , some minor shifting of map unit boundaries may be evident . 22 Custom Soil Resource Report Tables — Dwellings Without Basements ( RaIng2 ) Map unit Map unit name Rating Component Rating reasons Acres in AOI Percent of AOI symbol name ( percent ) ( numeric values ) 21 Dacono clay Somewhat Dacono ( 85 % ) Shrink - swell 3 . 4 100 . 0 % loam , 0 to 1 limited ( 0 . 31 ) percent slopes Totals for Area of Interest 3 . 4 100 . 0 % Rating Acres in AOI Percent of AOI Somewhat limited 3 . 4 100 . 0 % Totals for Area of Interest 3 . 4 100 . 0 % Rating Options — Dwellings Without Basements ( RaIng2 ) Aggregation Method : Dominant Condition Component Percent Cutoff.• None Specified Tie - break Rule : Higher Small Commercial Buildings ( RaIng3 ) ENG - Engineering 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 23 Custom Soil Resource Report 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 Small Commercial Buildings ( Rating3 ) kr Icrcr rt 515310 515330 515350 515370 515390 515410 515430 515450 515470 515490 40 ° 10 56 N - 1 40 ° 10 ' 56 " N 1 1 1 IN 1 jt If y dl P t IL dia .. .ar __ _ _ _ , a + lika ell 1\ I I 1r ci, r . ---1 1 rill gq.1 [ ! TS 1 -- ' c 85 ` op da cr , alli se _. _ r S .. "We ` - _ - f � a C 411, • r + Illtl S'tfi 10 AI - Or i - _ , ' - - - r SI, -i _ , ._ cyr N ! - * a I i lab - - 1 1 4 , dit - L , i lag _ 4 t _ - _ Soil Map may tit be ' aril at fh ' i_s scale . _ ` _ _ ` < r 1 . 40 ° 7 0 ' 52 „ N I I I I . I i I L � " u L. 40 ° 10 ' 52 " N 515310 515330 515350 515370 515390 515410 515430 51545D 515470 515490 ri 13. Map Scale : 1 : 887 if printed on A landscape ( 11 " x 8 . 5 " ) sheet , c) Meters Nyr 0 10 20 40 60 rt , Feet 0 40 80 160 240 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 ( AOI ) Background The soil surveys that comprise your AOI were mapped at Area of Interest ( AOI ) Aerial Photography 1 . 24 , 000 . Soils Soil Rating Polygons Warning : Soil Map may not be valid at this scale . I Very limited Enlargement of maps beyond the scale of mapping can cause I Somewhat limited misunderstanding of the detail of mapping and accuracy of soil I Not limited line placement . The maps do not show the small areas of contrasting soils that could have been shown at a more detailed I Not rated or not available scale . S oil Rating Lines o ; Very limited Please rely on the bar scale on each map sheet for map measurements . d 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 ) S oil Rating Points Very limited Maps from the Web Soil Survey are based on the Web Mercator projection , which preserves direction and shape but distorts S omewhat limited distance and area . A projection that preserves area , such as the Not limited Albers equal - area conic projection , should be used if more accurate calculations of distance or area are required . N ot rated or not available Water Features This product is generated from the USDA - NRCS certified data as Streams and Canals of the version date ( s ) listed below . Transportation Soil Survey Area : Weld County , Colorado , Southern Part Rails Survey Area Data : Version 24 , Aug 29 , 2025 Interstate Highways Soil map units are labeled ( as space allows ) for map scales U S 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 . Asa result , some minor shifting of map unit boundaries may be evident . 26 Custom Soil Resource Report Tables — Small Commercial Buildings ( RaIng3 ) Map unit Map unit name Rating Component Rating reasons Acres in AOI Percent of AOI symbol name ( percent ) ( numeric values ) 21 Dacono clay Somewhat Dacono ( 85 % ) Shrink - swell 3 . 4 100 . 0 % loam , 0 to 1 limited ( 0 . 31 ) percent slopes Totals for Area of Interest 3 . 4 100 . 0 % Rating Acres in AOI Percent of AOI Somewhat limited 3 . 4 100 . 0 % Totals for Area of Interest 3 . 4 100 . 0 % Rating Options — Small Commercial Buildings ( RaIng3 ) Aggregation Method : Dominant Condition Component Percent Cutoff.• None Specified Tie - break Rule : Higher 27 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 S ervice 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 . 01 2006 . Field indicators of hydric soils in the United States . N ational Research Council . 1995 . Wetlands : Characteristics and boundaries . S oil 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 / detail / nationa / soils / ? cid = nres142p2 _ 054262 S oil Survey Staff . 1999 . Soil taxonomy : A basic system of soil classification for making and interpreting soil surveys . 2nd edition . Natural Resources Conservation S ervice , U . S . Department of Agriculture Handbook 436 . http : / / www . nres . usda . gov /wps / portal / nres / detail / national / soils / ? cid = nres142p2 _ 053577 S oil Survey Staff . 2010 . Keys to soil taxonomy . 11 th 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 S ection . 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 / detai / 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 28 Custom Soil Resource Report U nited States Department of Agriculture , Natural Resources Conservation Service . N ational soil survey handbook , title 43041 . http : / / www . nres . 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 = 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 29 USDA United States A product of the Nations CUStOM Soi I Resource r Department of Cooperative Soi Survey , - Agriculture a joint effort of the United Report for States Department of Agricu to re and other We County , Federal agencies , State Natura agencies including the Resources Agricultural Experiment Co orado , Conservation Stations , and local Service participants Southern - it" w t. . _ „pr. . _ , 1 , , a. AV.° - * • t IL y . 1 � '! 1 as 1 ••,. -10 lika. 416 11 le 4 it " 0 r : 1 IS % I r' . V P .A. i I 1 i . r I% I . ait ' S II Illi a s -. 46 1 l . ri t • \ • I at . . et 11.110111111nOIS —AS " re - a ' 410 . . . . o me Ezmi 100 II April g , 2025 Preface a Soi surveys contain information that affects land use planning in survey areas . hey highlight soil limitations that affect various and 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 and use regulations of ederal , 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 he p the and users identify and reduce the effects of soil imitations on various land uses . The landowner or user is responsible for identifying and complying with existing laws and regulations . A though 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 qua ity assessments ( http : // www . nres . usda . gov/ wps / porta / nres / main / soi s / health ° and certain conservation and engineering applications . or more detailed information , contact your local USDA Service Center ( httpsa / / offices . sc . egov . usda . gov / locator/ app ? agency = nres ) or your MRCS State Soi Scientist ( httpa // www . nres . usda . gov /wps / portalinres/ detail / soi sfconiactusn c ' d - nres142p2. 053951 ) . Great differences in soil properties can occur within short distances . Some soils are seasonally wet or subject to flooding . Some are too unstab a 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 ederal agencies , State agencies inc uding the Agricultural Experiment Stations , and local agencies . The Natural Resources Conservation Service ( N RCS ) has leadership for the Federal part of the National Cooperative Soil Survey . Information about soils ` s updated periodica ly. Updated information is available through the MRCS Web Soil Survey , the site for official soil survey information . The U . S . Department of Agricu ture ( USDA ) prohibits discrimination in all its programs and activities on the basis of race , co or , national origin , age , d ' sability , and where applicable , sex , marita status , familial status , parental status , re igion , sexua 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 disabi ities who require 2 alternative means for communication of program information ( Braille , large pr ' nt , audiotape , etc . ) should contact USDA ' s TARG T Center at ( 202 ) 720 - 2600 ( voice and TDD ) . To file a complaint of discrimination , write to USDA , Director , Office of Civil Rights , 1400 ndependence Avenue , S . W . , Washington , D . C . 20250 - 0410 or call ( 800 ) 705 - 3272 ( voice ) or ( 202 ) 720 - 6382 ( TDD ) . USDA is an equa opportunity provider and employer . 3 Contents Preface 2 How Soil Surveys Are Made 5 Soil Map 8 Sail Map 9 Legend 10 Map Unit Legend 11 Map Unit Descriptions 11 Weld County, Colorado , Southern Part 13 21 —Dacono clay loam , 0 to 1 percent slopes 13 References 15 4 ■ owSoSurveys _ re Made Soil surveys are made to provide information about the so ° s and mince laneous areas in a specific area . They include a description of the soi s and miscellaneous areas and their location on the landscape and tables that show soi 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 soi 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 u nconsol ' dated material is devoid of roots and other living organisms and has not been changed by other biologics 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 miscel aneous areas in a survey area occur in an orderly pattern that is related to the geology , landforms , re ief , c imate , and natural vegetation of the area . Each kind of soil and miscellaneous area is associated with a particular kind of andform 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 specif c 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 , supp emented 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 co or , texture , size and shape of soil aggregates , kind and amount of rock fragments , destribution of pant roots , reaction , and other features that enable there 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 c assify soi s systematically . Soil taxonomy , the system of taxonomic classification used in the United States , is based mainly on the kind and character of soi properties and the arrangement of horizons within the profile . After the soil 5 Custom Soil Resource Report scientists classified and named the soils in the survey area , they compared the individual soils with similar soils in the same taxonomic cuss in other areas so that they could confirm data and assemble addit ' ona data based on experience and research . The objective of soil mapping is not to delineate pure map unit components ; the o bjective is to separate the landscape into landforms or landform segments that have similar use and management requirements . Each map unit is defined by a u nique combination of soil components and / or miscellaneous areas in predictable proportions . Some components may be highly contrasting to the other components o f 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 . S oil scientists make many field observations in the process of producing a soil map . The frequency of observation is dependent upon severa 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 n umber of measurements of individual soil properties are made and recorded . These measurements may inc ude field measurements , such as those for color , depth to bedrock , and texture , and laboratory measurements , such as those for content of sand , silt , clay , sa t , and other components . Properties of each soil typically vary from one point to another across the landscape . Observations for reap unit components are aggregated to develop ranges of characteristics for the components . he aggregated va ues 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 genera ly 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 soi s are field tested through o bservation of the soils in different uses and under different eve of management . S ome interpretations are modified to fit ocal conditions , and some new interpretations are developed to meet ocal needs . Data are assembled from other sources , such as research information , production records , and field experience of specialists . For example , data on crop yie ds under defined evels of management are assembled from farm records and from field or plot experiments on the same kinds of soil . P redictions about soil behavior are based not only on so 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 examp e , 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 so ' on a specific date . After soil scientists located and identified the significant natural bodies of soi in the survey area , they drew the boundaries of these bodies on aerial photographs and 6 Custom Soil Resource Report identified each as a specific map unit . Aerial photographs show trees , buildings , fields , roads , and rivers , all of which help in locating boundaries accurately . 7 Soil Map he soil map secton inc udes the soi 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 snit . 8 Custom Soil Resource Report Soil Map ct it 515310 515330 515350 515370 515390 515410 515430 515450 515470 515490 40 ° 10 ' 56" N I I _ � . - . i 40° 10 ' 56 " N 11 [ r 1 I . I I • I 41 ii: 401111 I I Al:a th IP 11. 6411,0-• 4 11 lif . V I . as I 01 4. Ow I 1. ' i f • i1 1 l r — I 1 • _ I ] 85 ilit r SI - e • 41110 . . ` o pi El, 1 del 0 I ! 1 a . 4 ii 1 . it" I. I� ls.) a . 4 a 4 .. **lb A Fl lit lair 1 . r II 4 144 Los I it. 1 i 1 4 o NIP r 0 , I ' 11 SIL400 10` 52" N 1 1 1 1 I - allip‘ I 40' 10 .52 " N 515310 515330 515350 515370 51 90 515410 515430 515450 515470 515490 N c cr ri z„ Map Scale : 1 : 857 if printed on A landscape ( 11 " x 831 fit. Meters 0 8 N 0 10 20 40 60 � + —. . . Feet 0 40 80 160 240 Map projection : Web Mercator Comer ordinates : WCS84 Edge ties : L TM Zone 13N WGS84 9 Custom Soi . Resource Report MAP L GENIC MAP INFORMATION Area of Interest ( AUI ) Spoil Area The soil surveys that comprise your AQI were mapped at Area of Interest ( A01 ) 1 : 241000 . 4 Stony Spot Soils Very Stony Spot i j' . Warning : Soil Ma may not be va id at this scale . Soli Map Unit Polygons g � P Y tv Wet Spot i 4 Soil Map Unit Lines Enlargement of maps beyond the sca a of mapping can cause Other misunderstanding of the detail of mapping and accuracy of sail Soil Map Unit Points � PP 0 y Special Line Features line placement . The maps do not show the small areas of Special Roint Features I contrasting sails that cou d have been shown at a more detailed co Blowout Water Features scale . Streams and Canals - - - ' t Borrow Fit Transportation Please re y on the bar scale on each map sheet for map , Y_ Clay Spot #-1-11 Rails measurements . C osed Depression Interstate Highways Gravel Pit Source of Map : Natural Resources Conservation Service US Routes Web Soil Survey UR : 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 A Lava Flow Backgroundprojection , which preserves direction and shape but distorts distance and area . A projection that preserves area , such as the Marsh or swamp Aerial Photography Albers equa - area conic projection , should be used if more go Mine or Quarry accurate calcu ations of distance or area are required . Miscellaneous Water This product is generated from the USDA - MRCS certified data as 0 Perennial Waterivit of the version date ( s ) listed below . Rock Outcrop Soi Survey Area : Weld County , Colorado , Southern Part + Saline Spot Survey Area Data : Version 23 , Aug 29 , 2024 fb . au Sandy Spot Soil map units are labeled ( as space allows ) for map scales es Severely Eroded Spot 1 : 50 , 000 or lamer . Sinkhole Date ( s ) aerial images were photographed : Jun 8 , 2021 — Jun 12 , Slide or Slip 2021 Sodic Spot The orthophoto or other base map on which the soil lines were comp ' led and digitized probably differs from the background imagery disp ayed on these maps . As a result , some minor shifting of map unit boundaries may be evident . 10 Custom Soi Resource Report 41 ap Unit Legend Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI 21 Dacono clay loam , 0 to 1 3 . 1 100 . 0 % percent slopes Totals for Area of Interest 3 . 1 10410 % Map Unit Descriplons The map units de ineated 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 soi s . W ' thin a taxonomic class there are precisely defined limits for the properties of the soils . Can the andscape , 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 imits defined for a taxonomic cuss . Areas of soils of a single taxonomic class rarely , if ever , can be mapped without including areas of other taxonomic classes . Consequent y , every map unit is made u p 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 sal or soils in the map unit , and thus they do not affect use and management . These are called n oncontrasting , or similar , components . They may or may not be mentioned ' n a particu ar 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 un ' t descriptions along with some characteristics of each . A few areas of minor components may not have been observed , and consequently they are not mentioned in the descriptions , especially where the pattern was so complex that it was impractical to make enough observations to identify all the soils and miscellaneous areas on the landscape . The presence of minor components in a map unit in no way diminishes the u sefulness 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 ' s planned , however, onsite investigation is needed to define and locate the soils and miscellaneous areas . 11 Custom Soil Resource Report An identifying symbol precedes the map unit name in the map unit descriptions . Each description includes general facts about the unit and gives important soil properties and qualities . Soils that have profiles that are almost alike make up a soil series . Except for differences in texture of the surface layer , all the soils of a series have major horizons that are s ' milar in composition , thickness , and arrangement . S o ' s of one series can differ in texture of the surface layer , slope , stoniness , sal ' nity , 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 . he name of a soil phase commonly indicates a feature that affects use or management . For example , Alpha s ' t oam , 0 to 2 percent slopes , is a phase of the Alpha series . S ome 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 ' n such sma areas that they cannot be shown separately on the maps . The pattern and proportion of the soi s 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 un ' t on the maps . Because of present o r anticipated uses of the map units in the survey area , it was not considered practical or necessary to map the soils or miscel aneous areas separately . The pattern and relative proportion of the soils or miscellaneous areas are somewhat similar . Alpha - Beta association , 0 to 2 percent s apes , is an examp e . An undifferentiated group is made up of two or more soi s or mince laneous 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 o f 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 misce laneous areas , or it can be made u p of all of them . Alpha and Beta sails , 0 to 2 percent slopes , is an example . S ome surveys include miscellaneous areas . Such areas have little or no soil material and support little or no vegetation . Rock outcrop ' s an example . 12 Custom Soil Resource Report Weld County , Colorado , Southern Part 21 Dacono clay loam , o to 1 percent slopes Map Unit Setting National map unit symbol : 361 y Elevation : 4 , 550 to 4 , 970 feet Mean annual precipitation : 14 to 18 Inches Mean annual air temperature : 48 to 52 degrees F Frost - free period : 140 to 160 days Farmland classification : Prime farmland if irrigated Map Unit Composition Dacono and similar soils : 35 percent Minor components : 15 percent Estimates are based on observations, descriptions , and transects of the mapunit . Description of Dacono Setting Landform : Terraces Down - slope shape : Linear Across - slope shape : Linear Parent material : Mixed alluvium Typica profile H1 - 0 to 12 inches : clay loam H2 - 12 to 21 inches : clay loam H3 - 21 to 27 inches : clay loam H4 - 27 to 60 inches : very gravelly sand Properties and qual ° ties Slope : 0 to 1 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 ( 0 . 20 to 0 . 60 i nlh r ) Depth to water table : More than 80 inches Frequency of flooding : None Frequency of ponding : None Calcium carbonate . maximum content : 15 percent ! Maximum salinity : Nonsa ine to very slightly saline ( 0 . 0 to 2 . 0 mmhoslcm ) Available water supply, 0 to 60 inches : Moderate ( about 6 . 3 inches ) nterpretive groups Land capability classification (irrigated) : 2s Land capability classification (nonirrigated) : 3s Hydrologic Soil Croup : C Ecological site : R067BY042C0 - Clayey Plans Hydric soil rating : No Minor Components Heldt Percent of map unit: 5 percent 13 Custom Soil Resource Report Hydric soil rating : No Nunn Percent of map unit : 5 percent Hydric soil rating : No A tvan Percent of map unit : 5 percent Hydric soil rating : No 14 References American Association of State Highway and Transportation Officials ( AAS TO ) . 2004 . Standard specifications for transportation materia s 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 . D . Golet , and . T. LaRoe . 1979 . Classification of wetlands and deep - water habitats of the United States . U . S . Fish and Wildlife S ervice FWS / OBS - 79 / 31 . Federal Register . July 13 , 1994 . Changes in hydr ' c 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 ' ndicators of hydric soils in the United States . N ational Research Council . 1995 . Wetlands : Characteristics and boundaries . S oil 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 / detail / national / soilsOcid = nres 142p2_054282 S oil Survey Staff . 1999 . Soil taxonomy : A basic system of soil classification for making and interpreting soil surveys . 2nd edition . Natural Resources Conservation S ervice , U . S . Department of Agriculture andbook 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 : // wwvv . nres . usda . gov/wps / portal / nres / detail / national / soils / ? cid = nres 142p2_053580 T ' ner , R . W . , Jr . 1985 . Wetlands of De aware . U . S . Fish and Wildlife Service and De awa a Department of Natura Resources and Environmental Control , Wetlands Section . U nited States Army Carps of Engineers , Environmental Laboratory . 1987 . Corps of ngineers wetlands de ineation manual . Waterways Exper ' ment Station Technical Report Y 87 - 1 . U nited States Department of Agriculture , Natural Resources Conservation Service . N ational forestry manua . 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 : / / vwvw. nres . usda . goviwps / portai/ nres / detail / national / landuse / rangepasture / ? cid = stelprdb1043084 15 Custom Soil Resource Report U nited States Department of Ag ricu tore , Natural Resources Conservation Service . N ational soil survey handbook , title 439 - VI . http : //www . nres . usda . gov/wps / portal / nresldetail / soils / scientists / ? cid = nres142p2_954242 U nited States Department of Agriculture , Natural Resources Conservation Service . L . nres . usda . gov/ Internet/ 1= SE 16 Hello