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Home My WebLink About20160756.tiff V SO LOGIC August 19, 2015 AGPROfessionals, LLC 3050 67`h Avenue, Suite 200 Greeley, Colorado 80634 Attn: Mr. Tim Naylor Re: Geology Report Wes Moser Property (Approximate 320 Acre Parcel) Weld County, Colorado Soilogic Project # 15-1219 Mr. Naylor: Soilogic, Inc. (Soilogic) personnel have completed the geologic evaluation you requested for the above referenced project. Our evaluation was completed through review of mapped and published information concerning site soil and groundwater conditions. A list of the references reviewed is included with this report. The subject property includes a total of approximately 320 acres described as the east %2 of Section 25, Township 3 North, Range 65 West of the 6th Principal Meridian in Weld County, Colorado. The property is located southwest of the intersection of County Roads 30 and 49 in Weld County, Colorado. The site is gently sloping to the east with the maximum difference in ground surface elevation across the parcel estimated to be approximately 30 feet. The included soil type delineation diagram outlines those soil groupings identified at the site by Weld County Soil Conservation Service (SCS) maps. SCS descriptions of those soil types are included with this report. In general, the near surface soils at this site consist of low plasticity silty/clayey sands from the Loup-Boel, Otero, Valent and Vona series, low plasticity clays from the Colombo series and low to high plasticity clays from the Renohill series. The mapped soils consist of Modern Alluvium from Holocene geologic period. Mapped information indicates the property is not in an area identified as being flood prone and would be expected to have groundwater at depths ranging from approximately 10 to 20 below ground surface across a majority of the site. Shallower Soilogic, Inc. 3050 67th Avenue, Suite 200 • Greeley, CO 80634 • (970) 535-6144 P.O. Box 1121 • Hayden, CO 81639 • (970) 276-2087 Geology Report Wes Moser Property (Approximate 320-Acre Parcel) Weld County, Colorado Soilogic # 15-1219 2 groundwater levels could be encountered in the area of Loup-Boel series soils and `wet- spots' were identified on Weld County SCS maps in areas of the site. According to geologic maps of the area, the site overburden soils are underlain by the Laramie bedrock formation consisting of shale, claystone and sandstone from the Upper Cretaceous period. According to SCS data, the depth to bedrock would be expected to be greater than 5 feet across a majority of the site. Shallower bedrock would be expected in areas of Renohill series soils anticipated to be encountered across approximately 3% of the parcel land area. Based on our review of the site as outlined above, we expect the near surface soils could be used for support of lightly to moderately loaded industrial structures. Deep foundation systems could be employed if heavy foundation loads are anticipated or if moderately to highly expansive bedrock is encountered within close proximity to proposed foundation bearing elevations. In addition, a majority of the site soils would be expected to exhibit percolation rates supporting conventional septic system construction. Engineered septic systems will be required for all industrial/commercial structures and special considerations will be required in areas of the site with shallow bedrock and/or groundwater as well as in areas with soils exhibiting percolation rates slower than 60 minutes/inch. Site specific percolation testing would be required to better evaluate the percolation rates of near surface soils and depth to bedrock and groundwater in septic absorption field areas. During our review of available site data, we did not identify other potential geologic hazards as outlined in H.B. 1041 . In addition, we did not identify economically recoverable gravel resources at this site. Geology Report Wes Moser Property (Approximate 320-Acre Parcel) Weld County, Colorado Soilogic # 15-1219 3 We appreciate the opportunity to be of service to you on this project. If we can be of further service to you in any way or if you have any questions concerning the enclosed information, please do not hesitate to contact us. Very Truly Yours, Soilogic, Inc. s )3 O, • REG 9(o9e ,• �' 1 off•.• I • . � • 0 , `r! • • . . 4f 73 . ;p'• I . t�6ONA , r Wolf von Ca owitz, P.E. Principal Engineer Geology Report Wes Moser Property (Approximate 320-Acre Parcel) Weld County, Colorado Soilogic # 15-1219 4 REFERENCES 1 . Colton R.B. and Harold R. Fitch, 1974, Map Showing Potential Sources of Gravel and Crushed-Rock Aggregate, in the Boulder-Fort Collins-Greeley Area, Front Range Urban Corridor, Colorado: U.S. Geological Survey Miscellaneous Investigation Series Map I-855-D. 2. Colton R.B., 1978, Geologic Map of the Boulder-Fort Collins-Greeley Area, Colorado: U.S. Geological Survey Miscellaneous Investigation Series Map I-955-G. 3. Hershey L.A. and Schneider, Jr. P.A., 1972, Geologic Map of the Lower Cache La Poudre River Basin, North-Central Colorado: U.S. Geological Survey Miscellaneous Investigation Series Map I-687. 4. Hillier D. and Schneider, Jr. P.A., 1979, Depth to the Water Table in the Boulder-Fort Collins-Greeley Area, Front Range Urban Corridor, Colorado : U.S. Geological Survey Miscellaneous Investigation Series Map I-855-I. 5. United States Department of Agriculture Soil Conservation Service and Forest Service in Cooperation with Colorado Agricultural Experiment Station, 1980, Soil Survey of Weld County Area, Colorado, Maps 239-812/3 . -6. Schneider;Jr-. P: A., 1983 Shallow Groundwater-in-the-Boulder-Fort Collins=Greeley Area, Front Range Urban Corridor, Colorado 1975-77: U. S. Geological Survey Water Resources Investigations Report 83-4058. 7. Soil Survey Staff, Natural Resources Conservation Service, United States Department of Agriculture. Web Soil Survey. Available online at http://websoilsurvey.nres.usda.gov accessed (August 19, 2015). 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RI 0 3 N RS a Z U 1 Soil Map—Weld County, Colorado, Southern Part Wes Moser Property Map Unit Legend Weld County, Colorado, Southern Part (CO618) Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI 19 Colombo day loam, 0 to 1 131 .2 39.9% percent slopes 35 Loup-Boel loamy sands, 0 to 3 3.8 1 .2% percent slopes 51 Otero sandy loam, 1 to 3 6.9 2.1% percent slopes 57 Renohill day loam, 3 to 9 8.6 2.6% percent slopes 69 Valent sand, 0 to 3 percent 27.6 8.4% slopes 72 Vona loamy sand, 0 to 3 percent 110.7 33.7% slopes 73 Vona loamy sand, 3 to 5 percent 39.8 12.1% slopes Totals for Area of Interest 328.5 100.0% USDA Natural Resources Web Soil Survey 8/19/2015 alliM Conservation Service National Cooperative Soil Survey Page 3 of 3 Map Unit Description (Brief, Generated)—Weld County, Colorado, Southern Part Wes Moser Property Map Unit Description ( Brief, Generated) 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 in this report, 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. The Map Unit Description (Brief, Generated) report displays a generated description of the major soils that occur in a map unit. Descriptions of non-soil (miscellaneous areas) and minor map unit components are not included. This description is generated from the underlying soil attribute data. Additional information about the map units described in this report is available in other Soil Data Mart reports, which give properties of the soils and the limitations, capabilities, and potentials for many uses. Also, the narratives that accompany the Soil Data Mart reports define some of the properties included in the map unit descriptions. Report—Map Unit Description ( Brief, Generated) Weld County, Colorado, Southern Part Map Unit: 19—Colombo clay loam, 0 to 1 percent slopes Component: Colombo (85%) The Colombo component makes up 85 percent of the map unit. Slopes are 0 to 1 percent. This component is on terraces, flood plains. The parent material consists of stratified, calcareous alluvium. Depth to a root restrictive layer is greater than 60 inches. The natural drainage class is well drained. Water movement in the most restrictive layer is moderately high. Available water to a depth of 60 inches (or restricted depth) is high. Shrink-swell potential is low. This soil is not flooded. It is not ponded. There is no zone of water saturation within a depth of 72 inches. Organic matter content in the surface horizon is about 3 percent. This component is in the R067BY042CO Clayey Plains ecological site. Nonirrigated land capability classification is 3e. Irrigated land capability classification is 1 This soil does not meet hydric criteria. The calcium carbonate equivalent within 40 inches, typically, does not exceed 8 percent. There are no saline horizons within 30 inches of the soil surface. USDA Natural Resources Web Soil Survey 8/19/2015 Conservation Service National Cooperative Soil Survey Page 1 of 6 Map Unit Description (Brief, Generated)—Weld County, Colorado, Southern Part Wes Moser Property Component: Dacono (5%) Generated brief soil descriptions are created for major components. The Dacono soil is a minor component. Component: Heldt (5%) Generated brief soil descriptions are created for major components. The Heldt soil is a minor component. Component: Nunn (5%) Generated brief soil descriptions are created for major components. The Nunn soil is a minor component. Map Unit: 35--Loup-Boel loamy sands, 0 to 3 percent slopes Component: Loup (55%) The Loup component makes up 55 percent of the map unit. Slopes are 0 to 3 percent. This component is on sandhill drainageways, swales, bottoms of streams. The parent material consists of sandy alluvium. Depth to a root restrictive layer is greater than 60 inches. The natural drainage class is poorly drained. Water movement in the most restrictive layer is high. Available water to a depth of 60 inches (or restricted depth) is low. Shrink-swell potential is low. This soil is not flooded. It is not ponded. A seasonal zone of water saturation is at 9 inches during March, April, May. Organic matter content in the surface horizon is about 3 percent. This component is in the R067BY029CO Sandy Meadow ecological site. Nonirrigated land capability classification is 6w. Irrigated land capability classification is 4w. This soil meets hydric criteria. The calcium carbonate equivalent within 40 inches, typically, does not exceed 3 percent. Component: Boel (35%) The Boel component makes up 35 percent of the map unit. Slopes are 0 to 3 percent. This component is on sandhill drainageways, bottoms of streams, swales. The parent material consists of stratified sandy alluvium. Depth to a root restrictive layer is greater than 60 inches. The natural drainage class is somewhat poorly drained. Water movement in the most restrictive layer is high. Available water to a depth of 60 inches (or restricted depth) is low. Shrink-swell potential is low. This soil is not flooded. It is not ponded. A seasonal zone of water saturation is at 27 inches during January, February, March, April, May, November, December. Organic matter content in the surface horizon is about 2 percent. This component is in the R067BY029CO Sandy Meadow ecological site. Nonirrigated land capability classification is 6w. Irrigated land capability classification is 4w. This soil does not meet hydric criteria. The calcium carbonate equivalent within 40 inches, typically, does not exceed 3 percent. Component: Valent (5%) USDA Natural Resources Web Soil Survey 8/19/2015 a Conservation Service National Cooperative Soil Survey Page 2 of 6 Map Unit Description (Brief, Generated)—Weld County, Colorado, Southern Part Wes Moser Property Generated brief soil descriptions are created for major components. The Valent soil is a minor component. Component: Osgood (5%) Generated brief soil descriptions are created for major components. The Osgood soil is a minor component. Map Unit: 51—Otero sandy loam, 1 to 3 percent slopes Component: Otero (85%) The Otero component makes up 85 percent of the map unit. Slopes are 1 to 3 percent. This component is on plains. The parent material consists of eolian deposits and/or mixed outwash. Depth to a root restrictive layer is greater than 60 inches. The natural drainage class is well drained. Water movement in the most restrictive layer is moderately high. Available water to a depth of 60 inches (or restricted depth) is moderate. Shrink-swell potential is low. This soil is not flooded. It is not ponded. There is no zone of water saturation within a depth of 72 inches. Organic matter content in the surface horizon is about 1 percent. This component is in the R067BY024CO Sandy Plains ecological site. Nonirrigated land capability classification is 4e. Irrigated land capability classification is 3e. This soil does not meet hydric criteria. The calcium carbonate equivalent within 40 inches, typically, does not exceed 6 percent. There are no saline horizons within 30 inches of the soil surface. Component: Kim (10%) Generated brief soil descriptions are created for major components. The Kim soil is a minor component. Component: Vona (5%) Generated brief soil descriptions are created for major components. The Vona soil is a minor component. Map Unit: 57—Renohill clay loam, 3 to 9 percent slopes Component: Renohill (85%) USDA Natural Resources Web Soil Survey 8/19/2015 Conservation Service National Cooperative Soil Survey Page 3 of 6 Map Unit Description (Brief, Generated)—Weld County, Colorado, Southern Part Wes Moser Property The Renohill component makes up 85 percent of the map unit. Slopes are 3 to 9 percent. This component is on upland hills, upland ridges. The parent material consists of residuum weathered from shale. Depth to a root restrictive layer, bedrock, paralithic, is 20 to 40 inches. The natural drainage class is well drained. Water movement in the most restrictive layer is moderately low. Available water to a depth of 60 inches (or restricted depth) is low. Shrink-swell potential is high. This soil is not flooded. It is not ponded. There is no zone of water saturation within a depth of 72 inches. Organic matter content in the surface horizon is about 2 percent. This component is in the R067BY042CO Clayey Plains ecological site. Nonirrigated land capability classification is 4e. Irrigated land capability classification is 4e. This soil does not meet hydric criteria. The calcium carbonate equivalent within 40 inches, typically, does not exceed 3 percent. Component: Shingle (8%) Generated brief soil descriptions are created for major components. The Shingle soil is a minor component. Component: Ulm (5%) Generated brief soil descriptions are created for major components. The Ulm soil is a minor component. Map Unit: 69—Valent sand, 0 to 3 percent slopes Component: Valent (85%) The Valent component makes up 85 percent of the map unit. Slopes are 0 to 3 percent. This component is on interdunes on dune fields. The parent material consists of noncalcareous eolian sands. Depth to a root restrictive layer is greater than 60 inches. The natural drainage class is excessively drained. Water movement in the most restrictive layer is high. Available water to a depth of 60 inches (or restricted depth) is very low. Shrink-swell potential is low. This soil is not flooded. It is not ponded. There is no zone of water saturation within a depth of 72 inches. Organic matter content in the surface horizon is about 1 percent. This component is in the R067BY015CO Deep Sand ecological site. Nonirrigated land capability classification is 7s. Irrigated land capability classification is 4s. This soil does not meet hydric criteria. There are no saline horizons within 30 inches of the soil surface. Component: Vona (5%) Generated brief soil descriptions are created for major components. The Vona soil is a minor component. Component: Julesburg (5%) Generated brief soil descriptions are created for major components. The Julesburg soil is a minor component. Component: Dailey (5%) USDA Natural Resources Web Soil Survey 8/19/2015 Conservation Service National Cooperative Soil Survey Page 4 of 6 Map Unit Description (Brief, Generated)—Weld County, Colorado, Southern Part Wes Moser Property Generated brief soil descriptions are created for major components. The Dailey soil is a minor component. Map Unit: 72—Vona loamy sand, 0 to 3 percent slopes Component: Vona (85%) The Vona component makes up 85 percent of the map unit. Slopes are 0 to 3 percent. This component is on plains, high terraces. The parent material consists of alluvium and/or eolian deposits. Depth to a root restrictive layer is greater than 60 inches. The natural drainage class is well drained. Water movement in the most restrictive layer is high. Available water to a depth of 60 inches (or restricted depth) is moderate. Shrink-swell potential is low. This soil is not flooded. It is not ponded. There is no zone of water saturation within a depth of 72 inches. Organic matter content in the surface horizon is about 1 percent. This component is in the R067BY024CO Sandy Plains ecological site. Nonirrigated land capability classification is 4e. Irrigated land capability classification is 3e. This soil does not meet hydric criteria. The calcium carbonate equivalent within 40 inches, typically, does not exceed 9 percent. There are no saline horizons within 30 inches of the soil surface. Component: Remmit (10%) Generated brief soil descriptions are created for major components. The Remmit soil is a minor component. Component: Valent (5%) Generated brief soil descriptions are created for major components. The Valent soil is a minor component. Map Unit: 73—Vona loamy sand, 3 to 5 percent slopes Component: Vona (85%) The Vona component makes up 85 percent of the map unit. Slopes are 3 to 5 percent. This component is on plains, high terraces. The parent material consists of alluvium and/or eolian deposits. Depth to a root restrictive layer is greater than 60 inches. The natural drainage class is well drained. Water movement in the most restrictive layer is high. Available water to a depth of 60 inches (or restricted depth) is moderate. Shrink-swell potential is low. This soil is not flooded. It is not ponded. There is no zone of water saturation within a depth of 72 inches. Organic matter content in the surface horizon is about 1 percent. This component is in the R067BY024CO Sandy Plains ecological site. Nonirrigated land capability classification is 4e. Irrigated land capability classification is 3e. This soil does not meet hydric criteria. The calcium carbonate equivalent within 40 inches, typically, does not exceed 9 percent. There are no saline horizons within 30 inches of the soil surface. Component: Remmit (8%) USDA Natural Resources Web Soil Survey 8/19/2015 'T Conservation Service National Cooperative Soil Survey Page 5 of 6 Map Unit Description (Brief, Generated)—Weld County, Colorado, Southern Part Wes Moser Property Generated brief soil descriptions are created for major components. The Remmit soil is a minor component. Component: Valent (7%) Generated brief soil descriptions are created for major components. The Valent soil is a minor component. Data Source Information Soil Survey Area: Weld County, Colorado, Southern Part Survey Area Data: Version 13, Sep 23, 2014 USDA Natural Resources Web Soil Survey 8/19/2015 sail Conservation Service National Cooperative Soil Survey Page 6 of 6 USDA United States A product of the National Custom Soil Resource Department of Cooperative Soil Survey, Agriculture a joint effort of the United Report for N RCS States Department of Agriculture and other We I d Co u n ty , alge State Natural agencies including the Colorado , Resources Agricultural Experiment Conservation Stations, and local Service participants Southern Part Wes Moser, Inc. • .. 9 __ jam T._— r r :or Ote t �11� a t , ,IN."6 je, 1 ' , . Lk 1 , .: ,I. a �. h _. • es ]. q ` r ' Ci _ J T 11 - -. •. N'• ISI - ... .^_- ._- - - C . r l i ' d ` a , k ‘ -at:* is 1 R s 1 w! l , Vii, `_V ' ' - 'Ts' ___....dil I August 10, 2015 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 (http:// offices .sc.egov.usda.gov/locator/app?agency=nrcs) or your NRCS State Soil Scientist (http://www.nrcs.usda .gov/wps/portal/nrcs/detail/soils/contactus/? cid=nrcs142p2_053951 ). Great differences in soil properties can occur within short distances. Some soils are seasonally wet or subject to flooding. Some are too unstable to be used as a foundation for buildings or roads. Clayey or wet soils are poorly suited to use as septic tank absorption fields. A high water table makes a soil poorly suited to basements or underground installations. The National Cooperative Soil Survey is a joint effort of the United States Department of Agriculture and other Federal agencies, State agencies including the Agricultural Experiment Stations, and local agencies. The Natural Resources Conservation Service (NRCS) has leadership for the Federal part of the National Cooperative Soil Survey. Information about soils is updated periodically. Updated information is available through the NRCS Web Soil Survey, the site for official soil survey information. The U .S. Department of Agriculture (USDA) prohibits discrimination in all its programs and activities on the basis of race, color, national origin, age, disability, and where applicable, sex, marital status, familial status, parental status, religion, sexual orientation, genetic information, political beliefs, reprisal, or because all or a part of an individual's income is derived from any public assistance program. (Not all prohibited bases apply to all programs.) Persons with disabilities who require alternative means 2 for communication of program information (Braille, large print, audiotape, etc.) should contact USDA's TARGET Center at (202) 720-2600 (voice and TDD). To file a complaint of discrimination, write to USDA, Director, Office of Civil Rights, 1400 Independence Avenue, S.W. , Washington, D .C. 20250-9410 or call (800) 795-3272 (voice) or (202) 720-6382 (TDD) . USDA is an equal opportunity provider and employer. 3 Contents Preface 2 How Soil Surveys Are Made 5 Soil Map 7 Soil Map 8 Legend 9 Map Unit Legend 10 Map Unit Descriptions 10 Weld County, Colorado, Southern Part 12 19—Colombo clay loam, 0 to 1 percent slopes 12 35—Loup-Boel loamy sands, 0 to 3 percent slopes 13 51—Otero sandy loam, 1 to 3 percent slopes 14 57—Renohill clay loam, 3 to 9 percent slopes 15 69—Valent sand, 0 to 3 percent slopes 17 72—Vona loamy sand, 0 to 3 percent slopes 18 73—Vona loamy sand, 3 to 5 percent slopes 19 References 21 4 How Soil Surveys Are Made Soil surveys are made to provide information about the soils and miscellaneous areas in a specific area. They include a description of the soils and miscellaneous areas and their location on the landscape and tables that show soil properties and limitations affecting various uses. Soil scientists observed the steepness, length, and shape of the slopes; the general pattern of drainage; the kinds of crops and native plants; and the kinds of bedrock. They observed and described many soil profiles. A soil profile is the sequence of natural layers, or horizons, in a soil. The profile extends from the surface down into the unconsolidated material in which the soil formed or from the surface down to bedrock. The unconsolidated material is devoid of roots and other living organisms and has not been changed by other biological activity. Currently, soils are mapped according to the boundaries of major land resource areas (MLRAs). MLRAs are geographically associated land resource units that share common characteristics related to physiography, geology, climate, water resources, soils, biological resources, and land uses (USDA, 2006). Soil survey areas typically consist of parts of one or more MLRA. The soils and miscellaneous areas in a survey area occur in an orderly pattern that is related to the geology, landforms, relief, climate, and natural vegetation of the area. Each kind of soil and miscellaneous area is associated with a particular kind of landform or with a segment of the landform. By observing the soils and miscellaneous areas in the survey area and relating their position to specific segments of the landform, a soil scientist develops a concept, or model, of how they were formed. Thus, during mapping, this model enables the soil scientist to predict with a considerable degree of accuracy the kind of soil or miscellaneous area at a specific location on the landscape. Commonly, individual soils on the landscape merge into one another as their characteristics gradually change. To construct an accurate soil map, however, soil scientists must determine the boundaries between the soils. They can observe only a limited number of soil profiles. Nevertheless, these observations, supplemented by an understanding of the soil-vegetation-landscape relationship, are sufficient to verify predictions of the kinds of soil in an area and to determine the boundaries. Soil scientists recorded the characteristics of the soil profiles that they studied. They noted soil color, texture, size and shape of soil aggregates, kind and amount of rock fragments, distribution of plant roots, reaction, and other features that enable them to identify soils. After describing the soils in the survey area and determining their properties, the soil scientists assigned the soils to taxonomic classes (units). Taxonomic classes are concepts. Each taxonomic class has a set of soil characteristics with precisely defined limits. The classes are used as a basis for comparison to classify soils systematically. Soil taxonomy, the system of taxonomic classification used in the United States, is based mainly on the kind and character of soil properties and the arrangement of horizons within the profile. After the soil scientists classified and named the soils in the survey area, they compared the 5 Custom Soil Resource Report individual soils with similar soils in the same taxonomic class in other areas so that they could confirm data and assemble additional data based on experience and research. The objective of soil mapping is not to delineate pure map unit components; the objective is to separate the landscape into Iandforms or landform segments that have similar use and management requirements. Each map unit is defined by a unique combination of soil components and/or miscellaneous areas in predictable proportions. Some components may be highly contrasting to the other components of the map unit. The presence of minor components in a map unit in no way diminishes the usefulness or accuracy of the data. The delineation of such landforms and landform segments on the map provides sufficient information for the development of resource plans. If intensive use of small areas is planned , onsite investigation is needed to define and locate the soils and miscellaneous areas. Soil scientists make many field observations in the process of producing a soil map. The frequency of observation is dependent upon several factors, including scale of mapping, intensity of mapping, design of map units, complexity of the landscape, and experience of the soil scientist. Observations are made to test and refine the soil- landscape model and predictions and to verify the classification of the soils at specific locations. Once the soil-landscape model is refined, a significantly smaller number of measurements of individual soil properties are made and recorded . These measurements may include field measurements, such as those for color, depth to bedrock, and texture, and laboratory measurements, such as those for content of sand , silt, clay, salt, and other components. Properties of each soil typically vary from one point to another across the landscape. Observations for map unit components are aggregated to develop ranges of characteristics for the components. The aggregated values are presented. Direct measurements do not exist for every property presented for every map unit component. Values for some properties are estimated from combinations of other properties. While a soil survey is in progress, samples of some of the soils in the area generally are collected for laboratory analyses and for engineering tests. Soil scientists interpret the data from these analyses and tests as well as the field-observed characteristics and the soil properties to determine the expected behavior of the soils under different uses . Interpretations for all of the soils are field tested through observation of the soils in different uses and under different levels of management. Some interpretations are modified to fit local conditions, and some new interpretations are developed to meet local needs. Data are assembled from other sources, such as research information, production records, and field experience of specialists . For example, data on crop yields under defined levels of management are assembled from farm records and from field or plot experiments on the same kinds of soil. Predictions about soil behavior are based not only on soil properties but also on such variables as climate and biological activity. Soil conditions are predictable over long periods of time, but they are not predictable from year to year. For example, soil scientists can predict with a fairly high degree of accuracy that a given soil will have a high water table within certain depths in most years , but they cannot predict that a high water table will always be at a specific level in the soil on a specific date. After soil scientists located and identified the significant natural bodies of soil in the survey area, they drew the boundaries of these bodies on aerial photographs and identified each as a specific map unit. Aerial photographs show trees, buildings, fields, roads, and rivers , all of which help in locating boundaries accurately. 6 Soil Map The soil map section includes the soil map for the defined area of interest, a list of soil map units on the map and extent of each map unit, and cartographic symbols displayed on the map. Also presented are various metadata about data used to produce the map, and a description of each soil map unit. 7 Custom Soil Resource Report N Soil Map tA M O cA ti .w 532700 532900 533100 533300 533500 533700 533900 534100 40° 12' 1T N I. .. I I _ -.I 1 40° 12' 17"N r 4 011011rt 2 3 I: .ice s — - --. ts;+ - :County Road 30 r • ...-�.— �i. �.-.- w ry. ... . _ a — +�. - 1 i-_.� * . , if *I): •:'c' - t i , • i 1" C � � ,� • .- Ii Y s>. n i ! E : u t `r • it ty I .. f< r. ,, 'v.. r 8 Lktt . YS G ".i 4, - ,• 4.12 [ 1• r �2 t . � VI 1 R ,. . litti Mit ' + • �._ ,fi t• f• `'f `J ...1... .4 • • ,• ' ` T' • � ' '" {' ,•' 8 0.• r` y• •j{{rte .•, ik.:,, 4. , - `.• ,y• {t 9 le 5 . 4s. . .. . ssitidas, r, . .._ 21/4 . ..• , i 19 . . i'i'i F 1• II - S 8 I p -� T;oiiL 4 !wil g _ 8 '.4. . 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Ji N L P. 0 z © N Q N Custom Soil Resource Report Map Unit Legend Weld County, Colorado, Southern Part (CO618) Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI 19 Colombo clay loam, 0 to 1 128.6 39.1 % percent slopes 35 Loup-Boel loamy sands, 0 to 3 4.4 1 .3% percent slopes 51 Otero sandy loam, 1 to 3 percent 6.9 2.1 % I slopes 57 Renohill clay loam, 3 to 9 percent 8.6 2.6% slopes 69 Valent sand, 0 to 3 percent 30.8 9.3% slopes 72 Vona loamy sand. 0 to 3 percent 110.1 33.4% slopes 73 Vona loamy sand, 3 to 5 percent 39.8 12.1% slopes Totals for Area of Interest 329.2 100.0%j Map Unit Descriptions The map units delineated on the detailed soil maps in a soil survey represent the soils or miscellaneous areas in the survey area. The map unit descriptions, along with the maps, can be used to determine the composition and properties of a unit. A map unit delineation on a soil map represents an area dominated by one or more major kinds of soil or miscellaneous areas. A map unit is identified and named according to the taxonomic classification of the dominant soils. Within a taxonomic class there are precisely defined limits for the properties of the soils. On the landscape, however, the soils are natural phenomena, and they have the characteristic variability of all natural phenomena. Thus , the range of some observed properties may extend beyond the limits defined for a taxonomic class. Areas of soils of a single taxonomic class rarely, if ever, can be mapped without including areas of other taxonomic classes. Consequently, every map unit is made up of the soils or miscellaneous areas for which it is named and some minor components that belong to taxonomic classes other than those of the major soils. Most minor soils have properties similar to those of the dominant soil or soils in the map unit. and thus they do not affect use and management. These are called noncontrasting , or similar, components. They may or may not be mentioned in a particular map unit description. Other minor components, however, have properties and behavioral characteristics divergent enough to affect use or to require different management. These are called contrasting, or dissimilar, components. They generally are in small areas and could not be mapped separately because of the scale used. Some small areas of strongly contrasting soils or miscellaneous areas are identified by a special symbol on the maps. If included in the database for a given area, the contrasting minor components are identified in the map unit descriptions along with 10 Custom Soil Resource Report some characteristics of each. A few areas of minor components may not have been observed, and consequently they are not mentioned in the descriptions, especially where the pattern was so complex that it was impractical to make enough observations to identify all the soils and miscellaneous areas on the landscape. The presence of minor components in a map unit in no way diminishes the usefulness or accuracy of the data. The objective of mapping is not to delineate pure taxonomic classes but rather to separate the landscape into landforms or landform segments that have similar use and management requirements. The delineation of such segments on the map provides sufficient information for the development of resource plans. If intensive use of small areas is planned, however, onsite investigation is needed to define and locate the soils and miscellaneous areas. An identifying symbol precedes the map unit name in the map unit descriptions. Each description includes general facts about the unit and gives important soil properties and qualities. Soils that have profiles that are almost alike make up a soil series. Except for differences in texture of the surface layer, all the soils of a series have major horizons that are similar in composition, thickness, and arrangement. Soils of one series can differ in texture of the surface layer, slope, stoniness, salinity, degree of erosion, and other characteristics that affect their use. On the basis of such differences, a soil series is divided into soil phases. Most of the areas shown on the detailed soil maps are phases of soil series. The name of a soil phase commonly indicates a feature that affects use or management. For example, Alpha silt loam, 0 to 2 percent slopes, is a phase of the Alpha series. Some map units are made up of two or more major soils or miscellaneous areas. These map units are complexes, associations, or undifferentiated groups. A complex consists of two or more soils or miscellaneous areas in such an intricate pattern or in such small areas that they cannot be shown separately on the maps. The pattern and proportion of the soils or miscellaneous areas are somewhat similar in all areas. Alpha-Beta complex, 0 to 6 percent slopes, is an example. An association is made up of two or more geographically associated soils or miscellaneous areas that are shown as one unit on the maps. Because of present or anticipated uses of the map units in the survey area, it was not considered practical or necessary to map the soils or miscellaneous areas separately. The pattern and relative proportion of the soils or miscellaneous areas are somewhat similar. Alpha- Beta association, 0 to 2 percent slopes, is an example. An undifferentiated group is made up of two or more soils or miscellaneous areas that could be mapped individually but are mapped as one unit because similar interpretations can be made for use and management. The pattern and proportion of the soils or miscellaneous areas in a mapped area are not uniform. An area can be made up of only one of the major soils or miscellaneous areas, or it can be made up of all of them. Alpha and Beta soils, 0 to 2 percent slopes, is an example. Some surveys include miscellaneous areas. Such areas have little or no soil material and support little or no vegetation. Rock outcrop is an example. 11 Custom Soil Resource Report Weld County, Colorado, Southern Part 19—Colombo clay loam, 0 to 1 percent slopes Map Unit Setting National map unit symbol: 361v Elevation: 4,600 to 4,780 feet Mean annual precipitation: 12 to 16 inches Mean annual air temperature: 48 to 52 degrees F Frost-free period: 130 to 160 days Farmland classification: Prime farmland if irrigated Map Unit Composition Colombo and similar soils: 85 percent Minor components: 15 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Colombo Setting Landform: Terraces, flood plains Down-slope shape: Linear Across-slope shape: Linear Parent material: Stratified, calcareous alluvium Typical profile H1 - 0 to 14 inches: clay loam H2 - 14 to 21 inches: stratified loam to clay loam H3 - 21 to 60 inches: stratified sand to loam to clay loam Properties and qualities Slope: 0 to 1 percent Depth to restrictive feature: More than 80 inches Natural 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 in profile: 10 percent Salinity, maximum in profile: Nonsaline to very slightly saline (0.0 to 2.0 mmhos/cm) Available water storage in profile: High (about 9.4 inches) Interpretive groups Land capability classification (irrigated): 1 Land capability classification (nonirrigated): 3e Hydrologic Soil Group: C Ecological site: Clayey Plains (R067BY042CO) Minor Components Nunn Percent of map unit: 5 percent 12 Custom Soil Resource Report Heldt Percent of map unit: 5 percent Dacono Percent of map unit: 5 percent 35—Loup-Boel loamy sands, 0 to 3 percent slopes Map Unit Setting National map unit symbol: 362f Elevation: 4,550 to 4,750 feet Mean annual precipitation: 11 to 15 inches Mean annual air temperature: 46 to 52 degrees F Frost-free period: 130 to 180 days Farmland classification: Not prime farmland Map Unit Composition Loup and similar soils: 55 percent Boel and similar soils: 35 percent Minor components: 10 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Loup Setting Landform: Drainageways , swales, streams Down-slope shape: Linear Across-slope shape: Linear Parent material: Sandy alluvium Typical profile H1 - 0 to 16 inches: loamy sand H2 - 16 to 40 inches: loamy sand H3 - 40 to 60 inches: sandy loam Properties and qualities Slope: 0 to 3 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Poorly drained 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 in profile: 5 percent Available water storage in profile: Low (about 5.2 inches) Interpretive groups Land capability classification (irrigated): 4w Land capability classification (nonirrigated): 6w Hydrologic Soil Group: ND 13 Custom Soil Resource Report Ecological site: Sandy Meadow (R067BY029CO) Description of Boel Setting Landform: Drainageways , streams, swales Down-slope shape: Linear Across-slope shape: Linear Parent material: Stratified sandy alluvium Typical profile H1 - 0 to 14 inches: loamy sand H2 - 14 to 60 inches: loamy sand Properties and qualities Slope: 0 to 3 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Somewhat poorly drained Runoff class: Very low Capacity of the most limiting layer to transmit water (Ksat): High to very high (5.95 to 19.98 in/hr) Depth to water table: About 18 to 36 inches Frequency of flooding: None Frequency of ponding: None Calcium carbonate. maximum in profile: 5 percent Available water storage in profile: Low (about 4.2 inches) Interpretive groups Land capability classification (irrigated): 4w Land capability classification (nonirrigated): 6w Hydrologic Soil Group: A Ecological site: Sandy Meadow (R067BY029CO) Minor Components Osgood Percent of map unit: 5 percent Valent Percent of map unit: 5 percent 51 —Otero sandy loam, 1 to 3 percent slopes Map Unit Setting National map unit symbol: 3630 Elevation: 4,700 to 5,250 feet Mean annual precipitation: 12 to 15 inches Mean annual air temperature: 48 to 52 degrees F Frost-free period: 130 to 180 days Farmland classification: Prime farmland if irrigated and the product of I (soil erodibility) x C (climate factor) does not exceed 60 14 Custom Soil Resource Report Map Unit Composition Otero and similar soils: 85 percent Minor components: 15 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Otero Setting Landform: Plains Down-slope shape: Linear Across-slope shape: Linear Parent material: Eolian deposits and/or mixed outwash Typical profile H1 - 0 to 12 inches: sandy loam H2 - 12 to 60 inches: fine sandy loam Properties and qualities Slope: 1 to 3 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Well drained Runoff class: Very low Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.57 to 5.95 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Calcium carbonate, maximum in profile: 10 percent Salinity, maximum in profile: Nonsaline to slightly saline (0.0 to 4.0 mmhos/cm) Available water storage in profile: Moderate (about 7.7 inches) Interpretive groups Land capability classification (irrigated): 3e Land capability classification (nonirrigated): 4e Hydrologic Soil Group: A Ecological site: Sandy Plains (R067BY024CO) Minor Components Kim Percent of map unit: 10 percent Vona Percent of map unit: 5 percent 57—Renohill clay loam, 3 to 9 percent slopes Map Unit Setting National map unit symbol: 3636 Elevation: 4,850 to 5,200 feet Mean annual precipitation: 11 to 16 inches 15 Custom Soil Resource Report Mean annual air temperature: 46 to 48 degrees F Frost-free period: 100 to 160 days Farmland classification: Not prime farmland Map Unit Composition Renohill and similar soils: 85 percent Minor components: 13 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Renohill Setting Landform: Hills, ridges Down-slope shape: Linear Across-slope shape: Linear Parent material: Residuum weathered from shale Typical profile H1 - 0 to 9 inches: clay loam H2 - 9 to 32 inches: clay loam H3 - 32 to 36 inches: unweathered bedrock Properties and qualities Slope: 3 to 9 percent Depth to restrictive feature: 20 to 40 inches to paralithic bedrock Natural drainage class: Well drained Runoff class: Medium Capacity of the most limiting layer to transmit water (Ksat): Moderately low to moderately high (0 .06 to 0.20 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Calcium carbonate, maximum in profile: 5 percent Available water storage in profile: Low (about 5.6 inches) Interpretive groups Land capability classification (irrigated): 4e Land capability classification (nonirrigated): 4e Hydrologic Soil Group: D Ecological site: Clayey Plains (R067BY042CO) Minor Components Shingle Percent of map unit: 8 percent Ulm Percent of map unit 5 percent 16 Custom Soil Resource Report 69—Valent sand, 0 to 3 percent slopes Map Unit Setting National map unit symbol: 2tczd Elevation: 3,850 to 5,210 feet Mean annual precipitation: 12 to 15 inches Mean annual air temperature: 48 to 52 degrees F Frost-free period: 130 to 180 days Farmland classification: Farmland of local importance Map Unit Composition Valent and similar soils: 85 percent Minor components: 15 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Valent Setting Landform: Interdunes Landform position (two-dimensional): Footslope, toeslope Landform position (three-dimensional): Base slope Down-slope shape: Linear Across-slope shape: Linear Parent material: Noncalcareous eolian sands Typical profile A - 0 to 5 inches: sand AC - 5 to 12 inches: sand Cl - 12 to 30 inches: sand C2 - 30 to 80 inches: sand Properties and qualities Slope: 0 to 3 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Excessively drained Runoff class: Negligible Capacity of the most limiting layer to transmit water (Ksat): High to very high (6.00 to 20.00 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Calcium carbonate, maximum in profile: 1 percent Salinity, maximum in profile: Nonsaline (0.0 to 1 .9 mmhos/cm) Available water storage in profile: Very low (about 2.4 inches) Interpretive groups Land capability classification (irrigated): 4s Land capability classification (nonirrigated): 7s Hydrologic Soil Group: A Ecological site: Deep Sand (R067BY015OO) 17 Custom Soil Resource Report Minor Components Dailey Percent of map unit: 5 percent Landform: Interdunes Landform position (two-dimensional): Toeslope Landform position (three-dimensional): Base slope Down-slope shape: Linear Across-slope shape: Concave Ecological site: Deep Sand (R067BY015CO) Julesburg Percent of map unit: 5 percent Landform: Interdunes Landform position (two-dimensional): Toeslope Landform position (three-dimensional): Base slope Down-slope shape: Linear Across-slope shape: Linear Ecological site: Sandy Plains (R067BY024CO) Vona Percent of map unit: 5 percent Landform: Interdunes Landform position (two-dimensional): Toeslope Landform position (three-dimensional) : Base slope Down-slope shape: Linear Across-slope shape: Linear Ecological site: Sandy Plains (R067BY024CO) 72—Vona loamy sand, 0 to 3 percent slopes Map Unit Setting National map unit symbol: 363r Elevation: 4,600 to 5,200 feet Mean annual precipitation: 13 to 15 inches Mean annual air temperature: 48 to 55 degrees F Frost-free period: 130 to 160 days Farmland classification: Farmland of local importance Map Unit Composition Vona and similar soils: 85 percent Minor components: 15 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Vona Setting Landform: Terraces, plains Down-slope shape: Linear Across-slope shape: Linear 18 Custom Soil Resource Report Parent material: Alluvium and/or eolian deposits Typical profile H1 - 0 to 6 inches: loamy sand H2 - 6 to 28 inches: fine sandy loam H3 - 28 to 60 inches: sandy loam Properties and qualities Slope: 0 to 3 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Well drained Runoff class: Very low Capacity of the most limiting layer to transmit water (Ksat): High ( 1 .98 to 6.00 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Calcium carbonate, maximum in profile: 15 percent Salinity, maximum in profile: Nonsaline to slightly saline (0.0 to 4.0 mmhos/cm) Available water storage in profile: Moderate (about 6.5 inches) Interpretive groups Land capability classification (irrigated): 3e Land capability classification (nonirrigated): 4e Hydrologic Soil Group: A Ecological site: Sandy Plains (R067BY024CO) Minor Components Remmit Percent of map unit: 10 percent Valent Percent of map unit: 5 percent 73—Vona loamy sand, 3 to 5 percent slopes Map Unit Setting National map unit symbol: 363s Elevation: 4,600 to 5,200 feet Mean annual precipitation: 13 to 15 inches Mean annual air temperature: 48 to 55 degrees F Frost-free period: 130 to 160 days Farmland classification: Not prime farmland Map Unit Composition Vona and similar soils: 85 percent Minor components: 15 percent Estimates are based on observations, descriptions, and transects of the mapunit. 19 Custom Soil Resource Report Description of Vona Setting Landform: Terraces, plains Down-slope shape: Linear Across-slope shape: Linear Parent material: Alluvium and/or eolian deposits Typical profile H1 - 0 to 6 inches: loamy sand H2 - 6 to 28 inches: fine sandy loam H3 - 28 to 60 inches: sandy loam Properties and qualities Slope: 3 to 5 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Well drained Runoff class: Very low Capacity of the most limiting layer to transmit water (Ksat): High (1 .98 to 6.00 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Calcium carbonate. maximum in profile: 15 percent Salinity, maximum in profile: Nonsaline to slightly saline (0.0 to 4.0 mmhos/cm) Available water storage in profile: Moderate (about 6.5 inches) Interpretive groups Land capability classification (irrigated): 3e Land capability classification (nonirrigated): 4e Hydrologic Soil Group: A Ecological site: Sandy Plains (R067BY024CO) Minor Components Remmit Percent of map unit: 8 percent Valent Percent of map unit: 7 percent 20 References American Association of State Highway and Transportation Officials (AASHTO). 2004. Standard specifications for transportation materials and methods of sampling and testing. 24th edition. American Society for Testing and Materials (ASTM). 2005. Standard classification of soils for engineering purposes. ASTM Standard D2487-00. Cowardin, L.M. , V. Carter, F.C. Golet, and E.T. LaRoe. 1979. Classification of wetlands and deep-water habitats of the United States. U.S. Fish and Wildlife Service FWS/OBS-79/31 . Federal Register. July 13, 1994. Changes in hydric soils of the United States. Federal Register. September 18, 2002. Hydric soils of the United States. Hurt, G.W., and L.M . Vasilas, editors. Version 6.0, 2006. Field indicators of hydric soils in the United States. National Research Council. 1995. Wetlands: Characteristics and boundaries. Soil Survey Division Staff. 1993. Soil survey manual. Soil Conservation Service. U.S. Department of Agriculture Handbook 18. http://www.nres.usda.gov/wps/portal/nres/ detail/national/soils/?cid=nres142p2_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=nres 142p2_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/nrcs/detail/national/soils/?cid=nrcs142p2_053580 Tiner, R.W., Jr. 1985. Wetlands of Delaware. U .S. Fish and Wildlife Service and Delaware Department of Natural Resources and Environmental Control, Wetlands Section. United States Army Corps of Engineers, Environmental Laboratory. 1987. Corps of Engineers wetlands delineation manual. Waterways Experiment Station Technical Report Y-87-1 . United States Department of Agriculture, Natural Resources Conservation Service. National forestry manual. http://www.nres .usda .gov/wps/portal/nres/detail/soils/ home/?cid=nres 142p2_053374 United States Department of Agriculture, Natural Resources Conservation Service. National range and pasture handbook. http://www.nres.usda.gov/wps/portal/nres/ detail/national/landuse/rangepasture/?cid=stelprdb1043084 21 Custom Soil Resource Report United States Department of Agriculture, Natural Resources Conservation Service. National soil survey handbook, title 430-VI. http://www.nres.usda.gov/wps/portal/ nres/detail/soils/scientists/?cid=nres142p2_054242 United States Department of Agriculture, Natural Resources Conservation Service. 2006. Land resource regions and major land resource areas of the United States, the Caribbean, and the Pacific Basin. U.S. Department of Agriculture Handbook 296. http://www.nres.usda.gov/wps/portal/nres/detail/national/soils/? cid=nrcs142p2_053624 United States Department of Agriculture, Soil Conservation Service. 1961 . Land capability classification. U.S. Department of Agriculture Handbook 210. http:// www.nres.usda.gov/Internet/FSE_DOCUMENTS/nres142p2_052290.pdf 22 Hello