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Home My WebLink About20222916.tiffJune 30, 2022 EAR'T'H ENGINEERING CONSULTAtirs, LLC Western Engineering Consultants 127 South R'enver Avenue Fort Lupton, Colorado 80621 Attn: Mr. Chadwin Cox (chadwin.cox _ westerneci.com) Re: Geologic Hazards and Mineral Extraction Report Weld County, Colorado EEC Project No. 1222043 Mr. Cox: Earth Engineering Consultants, LLC (EEC) personnel have completed the geologic hazards and mineral extraction evaluation you requested for the referenced project. Our evaluation was carried out by reviewing readily available data concerning soil and groundwater conditions for the site, principally through review of United States Geological Survey (USGS), Colorado Geological Survey (CGS), and United States Department of Agriculture Soil Natural Resources Conservation Service (NRCS) published information. A listing of the references reviewed as a part of the geologic hazard evaluation is included with this report. The property is located in the Northeast 'A of the Southeast Vt of Section 2, TIN, R67W of the 6th Principal Meridian, approximately 1' V2 miles west of Fort Lupton in Weld County, Colorado. The development parcel includes approximately 50 acres. We understand the referenced property is planned for mixed -use commercial lots. A diagram indicating the approximate location of the development is included with this report (Figure 1). The purpose of this evaluation is to identify potential geologic hazards and potential mineral resources which may conflict with proposed development. The conclusions and recommendations presented in this report are based upon the acquired field data, review of the available literature and previous experience with similar geologic conditions in this area* 4396 GREENFIELD DRIVE WINDSOR, COLORADO 80550 (970) 545-3908 FAX (970) 663-0282 www.earth-engineerieq.com Earth Engineering Consultants, LLC EEC Project No. 1222043 June 30, 2022 Page 2 Based on our site review, the site can generally be described as follows. A majority of the proposed development area was unimproved at the time of our exploration and used as cultivated land. Aerial imagery indicates an existing building is located on the northwest corner of the site with an oil/gas operation on the southeast area of the site. The ground surface was relatively fiat with apparent drainage to the east with slopes of about 1%. Aside from the noted existing improvements, evidence of other prior building construction was not observed at the site by EEC field personnel. No apparent areas of slope instability were observed during our site visit. Literature Review Soil/Geologic Review The site geology presented in this report is based upon the review of the available literature and maps, and previous experience with similar geologic conditions in this area. The locations of geologic features are approximate and should be considered accurate only to the degree implied by the methods used to make those measurements. The project site lies in the Colorado Piedmont Section of the Great Plains Physiographic Province. The sediments which compose the Colorado Piedmont were formed when uplift of the present-day Rocky Mountains in Late Cretaceous -Eocene times (70-30 million years ago) produced a large increase of stream sediments resulting in deposition of sediments on the flanks next to the mountain belt and outlying areas. The Colorado Piedmont is an elongated trough in the Great Plains, adjacent to the Front Range of the Southern Rockies. The Colorado Piedmont was formed when uplift of the area in Miocene times (20-5 million years ago) produced an increase of stream erosion resulting in scouring next to the foothills and outlying areas. The Piedmont is bordered by the southern Rockies to the west, great Plains escarpment to the northeast, and Palmer ivide to the south. Structurally, the site lies within the R enver Basin, a thick accumulation of Paleozoic and Mesozoic Era sediments involved with down -warping of the basin area and uplift of the adjacent highlands. Small anticlinal folds occur adjacent to the Front Range. It is our understanding that faulting has not taken place in the recent historic past in this area. According to the geologic mapping (Soister, 1965) of the area, those near surface soils are likely a Loess deposit, a wind deposited sediment of fine grain soil (Figure 2), more specifically, soil Earth Engineering Consultants, LLC EEC Project No. 1222043 June 30, 2022 Page 3 classification mapping (Natural Resources Conservation Service, May 5, 2022) suggests the near surface subgrades within the development area are likely to consist of Olney fine sandy loam (Map Unit Symbol 47) (Figure 3). The near surface soils are possibility underlain by zones of Slocum Alluvium, a sandy gravel, but more likely underlain by Dawson Formation bedrock consisting of dark gray claystone or siltstone. Groundwater depths are suggested at depths greater than 80 inches. Landslide Landslides as defined by CGS form on a preferential weakness zone causing a 'dry' mass of rock to slide downhill under the pull of gravity. Slopes appear to be relatively gentle on this parcel and no zones of preferential weakness were observed on aerial photos available on Google Earth; therefore, it is our opinion that the risk from landslide to be negligible at this particular location under current conditions. Oil and Gas Potential A review of the Colorado Oil and Gas Conservation Commission (COGCC) database (Colorado Oil and Gas Conservation Commision, 2022) indicate the site is located within a known oil and gas field; furthermore, oil/gas facilities and/or wells (either abandoned or in operation) are present on the site (Figure 4). Based on the available information, it appears oil/gas recovery appears possible at this site; however, a comprehensive evaluation would be required. However, due to the manner in which oil/gas is recovered, development of the site should not greatly impact the extraction of this resource beneath the project site should future extraction be proposed. Coal Mines The CGS classifies the area of the project site to be within a low potential area for coal formation and recovery. A review of the available mapping (Colorado Geological Survey, 2022) was performed to locate nearby active and historical coal mining operations. No coal mines were listed in the vicinity of the project site. Earth Engineering Consultants, LLC EEC Project No. 1222043 June 30, 2022 Page 4 Based on the available information and geology of the area, it appears no significant deposits of coal are located on the property which are of commercial grade or are an economical resource. Radiation Review of the available information (Colorado Geological Survey, 2022) indicates that no deposits of radioactive minerals have been identified at the referenced property. Although radioactive minerals were not identified, mitigating radon within site buildings may be necessary. Typically, radon levels are measured within site buildings after a normal operating routine has been established. Sand, Gravel and Quarry Aggregate Resource Review of available aggregate resource mapping of the Colorado Front Range (Schwochow, Shroba, & Wicklein, 1974) indicates that no significant sand and gravel deposits are expected on this property (Figure 5). CONCLUSION Based on our literature review, no apparent significant geologic hazards appear on the property. Geotechnical subsurface explorations are recommended for each building site to identify existing subsurface conditions. Pre -mitigation radon control methods, such as sub -slab piping, as well as radon tests should be considered. It is our opinion the proposed development appears compatible with the geologic conditions at the site. The data presented herein was collected to help determine the feasibility of this project. Professional opinions presented in this report are based on evaluation of technical information gathered, partly on our understanding of thecharacteristics of the development proposed, and partly on our experience with geologic conditions in the area. We do not guarantee the performance of the project in any respect, only an opinion of geologic conditions. Earth Engineering Consultants, LLC EEC Project No. 1222043 June 30, 2022 Page We appreciate the opportunity to be of service to you on this project. If you have any questions concerning this report, or if we can be of further service to you in any other way, please do not hesitate to contact us. Very truly yours, Earth Engineeri g Consultants, LLC Ethan P. Wiechert, P.E. Senior Project Engineer Reviewed by: David A. Richer, RE. Senior Geotechnical Engineer cc: Robert Demaree (bob. deniarcc:tiikw.com) References Colorado Geological Survey. (2022). Colorado Historical Coal Mines. Retrieved from https://cologeosurvey.maps.arcgisecom Colorado Geological Survey. (2022). ON-B-40ON-B-40M Radioactive Mineral Occurances ofColorado. Retrieved from https://eologeosurvey.maps.arcgis.com Colorado Oil and Gas Conservation Commision. (2022). C GCC GISOnline. Retrieved from https://cogccmapestate.co.usicogcc_gis_onlinet Natural Resources Conservation Service. (May 5, 2022). Custorn Soil Resource Report for Demaree Property. Schwochow, Shroba, & Wicklein. (n.d). Sand, Gravel, and Quarry Aggregate Resources, Colorado Front Range Counties. Colorado Geological Survey. Soister, P. (1965). Geologic Map of the Fort Lupton Quadrangle, Weld and Adams Counties, Colorado. United States Geological Survey. Figure 1: Site Location Weld County,. Colorado EEC Project #: 1222043 Date: June 2022 r -- C e . l�f v1/49 60 o 2 N l i Legend Kdw \\ Nka, �f IsteNC. I Loess Sandy and clayey silt and some silty fin sand; locally includes pebbles or small cobbles that are probably colluvial from older gravel deposits; pale yellowish - brown to grayish -orange. Includes more than one loess sheet. Soil profiles of probable Sangamon and Wisconsin age, locally superimposed, with the (clayey) and c(' (calcareous) horizons preserved, are developed in the loess over large areas. Probably present below most of the eolian sand. Thickness generally 3-15 feet but more than 25 feet thick locally (Soister, 1965) Figure 2: Geologic Map Weld County, Colorado EEC Project #: 1222043 Date: June 2022 North Not to Scale EARTH ENGINEERING CONSULTANTS, LLC Map Unit Legend Map Unit Symbol Map Unit Name Acres in ACM Percent of AOI 'Colombo clay loam. 0 to 1 percent slams = - L6% =.1 Kim loam. 5 to 9 percent slopes 38.5 11.3a ,- Olney fine sandy loam. 1 to 3 percent slopes 234.6 b8_7% Olney fine sandy loam_ 3 to 5 percent slopes 20.4 6 0% Otero sandy loam, 3 to 5 percent slopes 24.0 7.0% 82 Wiley -Colby complex. 1 to 3 percent slopes 18.7 5.5% Totals for Area of Interest 341.7 100.0% (Natural Resources Conservation Service, May.. 5, 2022) Figure 3: NRCS Soil Survey Map Weld County, Colorado EEC Project #: 1222043 Date: June 2022 North Not to Scale EARTH ENGINEERING CONSULTANTS, LLC • 14 ♦ • • • * • a Hwy • • • • • • • f • • S • • s S • Project Site • • 12 19 f I • • = 1500 Feet • • ♦ ir S • • • • • I S • 0 • e f i * MID • 0 750 1500 r 3000 • • S. • WIN • • • i s • • • S • 11 12 • • t • S • • S f • • ♦ Points Li inns Well (API Spot) COGCC Oil S Gas Fields 1 I Fields Roads & Railroads (COOT) Highways Railroads — Major Roads — Forest Roads Local Roads Section, Township, 8 Range (PLSs Townshps ctVQns - Sections (State Border) Protracted Areas nCostilla Land Grant Townships Collins Land Grant Sections Maxwell Land Grant Sections ei Ttibai Lands .i. Boundary: Southern Ube Reserv& la Surface Features Cities (Colorado Oil and Gas Conservation Commission, 2022) Figure 4: Map of Oil and Gas Wells/ Fields Weld County, Colorado EEC Project #: 1222043 Date: June 2022 North Not to Scale EARTH ENGINEERING CONSULTANTS, LLC L Cunuy Road IV County Rand 10 (14) County +hoar! 7 L f} I eri U4 s'-` Ccunly+ R and 21 Project Site County Ram* t 2 N s�. 3 trG+11 to 111{>INwrio'-S� I 6/28/2022, 5:2'1:16 PM Satei.and_BoardJ1 ineraLOwnership II Statejorder_BOLA Iquad rang le_Etcu ndarleeGS Other Quad Boundaries 1'314 Stud-yArea Quadrangle boundary County_ Laundanes_DDLA Q Other Mapped Boundaries definite contact, kncwrVabser!ed (solid) inferred, buried (dotted) con tact. - — . approximate (dashed) contact neatline (used fordelineath n of resource areas that end at a county boundary) unattributed line, used for olaritk ation of textual notes L11 farM_U n iLClmAifi anon A - alluvial fan E- eolian sand (unn d depos fte.d) F- flood plai n depos it V - valley fill (flood plain an"(ar terrace deep -mils) 7 - net mapped - man-made deposits (slag, tailings, spoils, etc.) Histor _Quarry_Drill_Hae_and Sam ple_i ecatbns O- other, includes cronglorrterates R- potentialquarry aggregate rlrsauroe 7- stream terrace d epos it U- up land deposits drill hole other (no data available) quarry sample site O.ndfaravel pit a a 1:18,056 0.17 0.35- i 0.2d 0.55 • 0.7 mi 1.1 km S&hvrxhow, S.D. Shrcba, R.Ft, and Vile klein, P.C. 19T4, Sand, Cavell and Quarry Aggregate Rcaourcea, Colorado Front Range Counties, Cobrada Geobgical Su Rey, Denver, Calorad.e, Colorad-c Cealagical .urveny WebP.ppBuiberfix AroGIS Bureau of Land Management, Esri, HERE, Garmin, aseTec hnol gins, Inc., USGS, METI/NA.aA, EPA, MBA. I Schwbochaw, S.D., Shroba, R. R., and UtilickIein. P'_C., 14174, Sand, Gravel, and 0u-sr./Aggregate Recur . Cobrada Front Range Counties, Colorado GaalogicalSurvey, Denver, Colorado, 0 -abrade (Sch ocho r Shlrobar & Wicklein, 1974) North Nat to Scale Figure 5: Aggregate Resources Map Weld County, Colorado EEC Project #: 1222043 Date: June 2022 EARTH ENGINEERING CONSULTANTS, LLC May 6, 2022 EAR'T'H ENGINEERING CONSULTAtirs, LLC Western Engineering Consultants 127 South R'enver Avenue Fort Lupton, Colorado 80621 Attn: Mr. Chadwin Cox (chadwin.cox _ westerneci.com) Re: Preliminary Review of Subsurface Conditions Fort Lupton, Colorado EEC Project No. 1222043 Mr. Cox: As requested, Earth Engineering Consultants, LLC (EEC) personnel have completed the preliminary review of subsurface conditions you requested for the referenced site. That evaluation was completed by reviewing readily available data concerning soil and groundwater conditions at the site, principally through review of United States Geologic Society (USES) and Natural Resources Conservation Service 1's ) published information. The purpose of this report is to provide a succinct description of the subsurface conditions likely present on the site. A summary of our review is provided herein. The Property is located in the Northeast Vt of the Southeast ' of Section 2, T 1N, R67W of the 6th Principal Meridian, approximately PA miles west of Fort Lupton in Weld County, Colorado. The development parcel includes approximately 50 acres. Site drainage is generally from west to east. Total elevation change across the site is on the order of 15 to 20 feet. A diagram indicating the approximate location of the development is included with this report. Review of soil classification mapping (Natural Resources Conservation Service, May 5, 2022) suggests the near surface subgrades within the development area are likely to consist of Olney fine sandy loam (Map Unit Symbol 47). According to the geologic mapping of the area (Soister, 1965), those near surface soils are likely a Loess deposit, a wind deposited sediment of fine grain soil, loosely cemented by calcium carbonate. Loess is characteristically loosely deposited and highly porous. The Loess deposit is possibly underlain by Slocum Alluvium, a sandy gravel, underlain by Dawson Formation bedrock consisting of dark gray claystone or siltstone. Groundwater depths 4396 GREENFIELD DRIVE WINDSOR, COLORADO 8 055 6 (970) 545-3908 FAX (970) 663-0282 www.earth-engineerieq.com Earth Engineering Consultants, LLC EEC Project No. 1222043 May 6, 2022 Page 2 are suggested at depths greater than 80 inches. The referenced soil maps and associated map unit descriptions are attached with this report under separate cover. Based on our review of the site as outlined above, we anticipate the near surface soils could be used for support of lightly loaded improvements. More heavily loaded structures may require deep foundations. The near surface soils could exhibit a potential for volume changes; as such, ground improvements may be necessary (such as over excavation and replacement). The evaluation for this report was based on a review of readily available public information for the property and/or prior experience in the general area. A geotechnical subsurface exploration is recommended to accurately assess the soil conditions at this site for design of the site improvements. We appreciate the opportunity to be of service to you on this project. If you have any questions concerning this report, or if we can be of further service to you in any other way, please do not hesitate to contact us. Very truly yours, Earth Engineering Consultants, LLC Ethan P. Wiechert, P.E. Senior Project Engineer Reviewed by: David A. Richer, P.E. Senior Geotechnical Engineer References Natural Resources Conservation Service. (May 5, 2022) . Custom Soil Resource Report So inter, P. (1965), Geologic Map of the Form Lupton Quack angle, Weld and Adams Counties, Colorado. United States Geological Survey. Site Diagram Weld County, Colorado EEC Project #: 1222043 Date: May 2022 USDA UStates a Department of Agriculture NKS Natural Resources Conservation Service A product of the National Cooperative Soil Survey, a joint effort of the United States Department of Agriculture and other Federal agencies, State agencies including the Agricultural Experiment Stations, and local participants Custom Soil Resource Report for Weld County, Colorado, Southern Part May 5, 2022 Preface Soil surveys contain information that affects land use planning in survey areas. They highlight soil limitations that affect various land uses and provide information about the properties of the soils in the survey areas. Soil surveys are designed for many different users, including farmers, ranchers, foresters, agronomists, urban planners, community officials, engineers, developers, builders, and home buyers. Also, conservationists, teachers, students, and specialists in recreation, waste disposal, and pollution control can use the surveys to help them understand, protect, or enhance the environment. Various land use regulations of Federal, State, and local governments may impose special restrictions on land use or land treatment. Soil surveys identify soil properties that are used in making various land use or land treatment decisions. The information is intended to help the land users identify and reduce the effects of soil limitations on various land uses. The landowner or user is responsible for identifying and complying with existing laws and regulations. Although soil survey information can be used for general farm, local, and wider area planning, onsite investigation is needed to supplement this information in some cases. Examples include soil quality assessments (http://www.nrcs.usda.goviwpsi 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.govllocator/app?agency=arcs) or your NROS State Soil Scientist (http://www.nres.usda.govfwpslportal/nres/detaillsoils/contactusl? aid=nres 14.2 p2_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 f=ederal agencies, State agencies including 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 is updated periodically. Updated information is available through the N RCS 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 9 Legend 10 Map Unit Legend 11 Map Unit Descriptions 11 Weld County, Colorado, Southern Part 13 19 —Colombo clay loam, 0 to 1 percent slopes 13 34 —Kim loam, 5 to 9 percent slopes 14 47 Olney fine sandy loam, 1 to 3 percent slopes 15 48 —Olney fine sandy loam, 3 to 5 percent slopes 16 52 Otero sandy loam, 3 to 5 percent slopes 17 82 —Wiley -Colby complex, 1 to 3 percent slopes 18 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 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. 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 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. 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 40° 5' 4" N 8 4 8 r 40° 4' 20" N 1040 51' 47" W 511700 51190D 512103 512'334 512503 512700 512900 513103 513334 513500 513700 511700 z En N 51190D 512100 512300 Map Scale: 1:9,640 if printed on A landscape (11" x 8.5") sheet. Meters 0 100 200 400 600 Custom Soil Resource Report Soil Map 512503 Feet 0 450 900 1800 271) Map p -ton : Web Mercator Corner coordinates: WG584 Edge tics: UTM Zone 13N WG584 512703 9 512900 51310D 513330 513503 513700 104° 50' 18" W 1040 50' 18" 1+V 40° 5'4"N 8 4 cz 1 40° 4' 20" N Custom Soil Resource Report MAP LEGEND Area of Interest (01) Area of Interest (AO!) Soils pabo • Soil Map Unit Polygons Soil Map Unit Lines Soil Map Unit Points Special Point Features a - Blowout Borrow Pit Clay Spot Closed Depression Gravel Pit Gravelly Spot Landfill Lava Flow Marsh or swamp Mine or Quarry Miscellaneous Water Perennial Water Rock Outcrop Saline Spot Sandy Spot Severely Eroded Spot Sinkhole Slide orSlip Sodic Spot Spoil Area Stony Spot Very Stony Spot Wet Spot Other Special Line Features Water Features Streams and Canals Transportation Rails Interstate Highways sozossis US Routes Major Roads Local Roads Backgr a nd Aerial Photography MAP INFORMATION The soil surveys that comprise your AO1 were mapped at 1:24,000. Warning: Soil Map may not be valid at this scale. Enlargement of maps beyond the scale of mapping can cause misunderstanding of the detail of mapping and accuracy of soil line placement. The maps do not show the small areas of contrasting soils that could have been shown at a more detailed scale. Please rely on the bar scale on each map sheet for map measurements. Source of Map: Natural Resources Conservation Service Web Soil Survey URL: Coordinate System: Web Mercator (EPSG:3857) Maps from the Web Soil Survey are based on the Web Mercator projection, which preserves direction and shape but distorts distance and area. A projection that preserves area, such as the Albers equal-area conic projection, should be used if more accurate calculations of distance or area are required. This product is generated from the USDA-NRCS certified data as of the version date(s) listed below. Soil Survey Area: Weld County, Colorado, Southern Part Survey Area Data: Version 20, Aug 31, 2021 Soil map units are labeled (as space allows) for map scales 1:50,000 or larger. Date(s) aerial images were photographed: Jul 19, 2018 Aug 10,2018 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 Map Unit Legend Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI 19 Colombo clay percent slopes loam, 0 to 1 5.5 1.6% 34 Kim loam, 5 to 9 percent slopes 38.5 11.3% 47 Olney fine sandy percent slopes loam, 1 to 3 234.6 68.7% 48 Olney fine sandy percent slopes loam, 3 to 5 20.4 6.0% 52 Otero sandy loam, percent slopes 3 to 5 24.0 7.0% 82 Wiley -Colby complex, percent slopes 1 to 3 18.7 5.5% Totals for Area of Interest 341.7 100.0% Map Unit Descriptions The map units delineated on the detailed soil maps in a soil survey represent the soils or miscellaneous areas in the survey area. The map unit descriptions, along with the maps, can be used to determine the composition and properties of a unit. A map unit delineation on a soil map represents an area dominated by one or more major kinds of soil or miscellaneous areas. A map unit is identified and named according to the taxonomic classification of the dominant soils. Within a taxonomic class there are precisely defined limits for the properties of the soils. On the landscape, however, the soils are natural phenomena, and they have the characteristic variability of all natural phenomena. Thus, the range of some observed properties may extend beyond the limits defined for a taxonomic class. Areas of soils of a single taxonomic class rarely, if ever, can be mapped without including areas of other taxonomic classes. Consequently, every map unit is made up of the soils or miscellaneous areas for which it is named and some minor components that belong to taxonomic classes other than those of the major soils. Most minor soils have properties similar to those of the dominant soil or soils in the map unit, and thus they do not affect use and management. These are called noncontrasting, or similar, components. They may or may not be mentioned in a particular map unit description. Other minor components, however, have properties and behavioral characteristics divergent enough to affect use or to require different management. These are called contrasting, or dissimilar, components. They generally are in small areas and could not be mapped separately because of the scale used. Some small areas of strongly contrasting soils or miscellaneous areas are identified by a special symbol on the maps. If included in the database for a given area, the contrasting minor components are identified in the map unit descriptions along with some characteristics of each. A few areas of minor components may not have been observed, and consequently they are not mentioned in the descriptions, especially where the pattern was so complex that it 11 Custom Soil Resource Report 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. 12 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: 361 v Elevation: 4,600 to 4,780 feet Meanannual 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 HI - 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 Drainage class: Well drained Runoff class: Low Capacity of the most limiting layer to transmit water 'Ksat): Moderately high (0.20 to 0.60 inihr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None calcium carbonate, maximum content: 10 percent Maximum salinity: Nonsaline to very slightly saline (0.0 to 2.0 mmhos/cm) Available water supply, 0 to 60 inches: High (about 9.4 inches) Interpretive groups Land capability classification ('irrigated): I Land capability classification (nonirrigated): 3e Hydrologic Soil Group: Ecological site: R067BY042CO - Clayey Plains Hydric soil rating: No Minor Components Dacono Percent of map unit: 5 percent Hydric soil rating: No 13 Custom Soil Resource Report Heldt Percent of map unit: 5 percent Hydric soil rating: No Nunn Percent of map unit 5 percent Hydric soil rating: No 34 —Kim loam, 5 to 9 percent slopes Map Unit Setting National map unit symbol: 362d Elevation: 4,900 to 5,250 feet Mean annual precipitation: 13 to 17 inches Mean annual air temperature: 46 to 52 degrees F Frost -free period: 125 to 150 days Farmland classification: Farmland of local importance Map Unit Composition Kim and similar soils: 90 percent Minor components: 10 percent Estimates are based on observations, descriptions, and trnsects of the mapunit. Description of Kim Setting Landform: Alluvial fans, plains Down -slope shape: Linear Across -slope shape: Linear Parent material: Mixed eolian deposits derived from sedimentary rock Typical profile HI - 0 to 10 inches: loam H2 - 10 to 35 inches: loam H3 - 35 to 60 inches: fine sandy loam Properties and qualities Slope: 5 to 9 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 c'Ksat9: Moderately high to high (0.57 to 5.95 inlhr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Calcium carbonate, maximum content: 15 percent Available water supply, 0 to 60 inches: Moderate (about 8.8 inches) Interpretive groups Land capability classification (irrigated): 4e 14 CustomSoil Resource Report Land capability classification (nonirrigated): 6e Hydrologic Sod Group: Ecological site: R067 Y00 O - Loamy Slopes Hydric soil rating: No Minor Components Otero Percent of map unit 6 percent Hydric soil rating: No Valent Percent of map unit: 4 percent Hydric soil rating: No 47 Olney fine sandy loam, .1 to 3 percent slopes Map Unit Setting National map unit symbol: 362v Elevation: 4,600 to 5,200 feet Mean annual precipitation: 11 to 15 inches Mean annual air temperature: 46 to 54 degrees F Frost -free period: 125 to 175► days Farmland classification: Prime farmland if irrigated and the product of I (soil erodibility) x C (climate factor) does not exceed 60 Map Unit Composition Olney and similar soils: 85 percent Minor components: 15 percent Estimates are based on observations, descriptions, and transects of the mapunit Description of Olney Setting Landform: Plains Down -slope shape: Linear Across -slope shape: Linear Parent material: Mixed deposit outwash Typical profile 1 - 0 to 10 inches: H2 - 10 to 20 inches. H3 - 20 to 25 inches. H4 - 25 to 60 inches fine sandy loam sandy clay loam • sandy clay loam ▪ fine sandy loam Properties and qualities Slope: 1 to 3 percent Depth to restrictive feature: More than 80 inches Drainage class: Well drained Runoff class: Low Custom Soil Resource Report Capacity of the most limiting layer to transmit water (sat): Moderately high to high (0.57 to 2.00 inlhr) 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 mmhoslcm) Available water supply, 0 to 60 inches: Moderate (about 7.0 inches) Interpretive groups Land capability classification (irrigated): 3e Land capability classification (nonirrigated): 4c Hydrologic Soil Group: B Ecological site: R067BY024CO Sandy Plains Hydric soil rating: No Minor Components Zigweid Percent of map unit: 10 percent Hydric soil rating: No Vona Percent of map unit: 5 percent Hydric soil rating: No 48 Olney fine sandy loam, 3 to 5 percent slopes Map Unit Setting National map unit symbol: 362w Elevation: 4,600 to 5,200 feet Mean annual precipitation: 11 to 15 inches Mean annual air temperature: 46 to 54 degrees F Frost -free period: 125 to 175 days Farmland classification: Farmland of statewide importance Map Unit Composition Olney and similar soils: 85 percent Minor components: 15 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Olney Setting Landform: Plains Down -slope shape: Linear Across -slope shape: Linear Parent material: Mixed deposit out ash Typical profile H1 - 0 to 10 inches: fine sandy loam Custom Soil Resource Report H2 - 10 to 20 inches: sandy clay loam H3 - 20 to 25 inches: sandy clay loam 1-14 - 25 to 60 inches: fine sandy loam Properties and qualities Slope: 3 to 5 percent Depth to restrictive feature: More than 80 inches Drainage class: Well drained Runoff class: Low Capacity of the most limiting layer to transmit water (sat)' Moderately high to high (0.57 to 2.00 inlhr) 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 mmhoslcm) Available water supply, 0 to 60 inches: Moderate (about 7.0 inches) Interpretive groups Land capability classification (irrigated): 8e Land capability classification ('nonirrigated): 4c Hydrologic Soil Group: B Ecological site: R067BY024CO - Sandy Plains Hydric soil rating: No Minor Components Zigweid Percent of map unit: 9 percent Hydric soil rating: No Vona Percent of map unit: 6 percent Hydric soil rating: No 52 Otero sandy loam, 3 to 5 percent slopes Map Unit Setting National map unit symbol: 3631 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: Farmland of statewide importance Map Unit Composition Otero and similar soils: 85 percent Minor components: 15 percent Estimates are based on observations, descriptions, and transacts of the mapunit Custom Soil Resource Report Description of Otero Setting Landform: Plains Down -slope shape: Linear Across -slope shape: Linear Parent material: Eolian deposits and/or mixed outwash Typical profile l -1 - 0 to 12 inches: sandy loam H2 - 12 to 60 inches: fine sandy loam Properties and qualities Slope: 3 to 5 percent Depth to restrictive feature: More than 80 inches Drainage class: Well drained Runoff class: Very low capacity of the most limiting layer to transmit water (set,: 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 content: 10 percent Maximum salinity: Nonsaline to slightly saline (0.0 to 4.0 mmhos/cm ) Available water supply, 0 to 60 inches: Moderate (about 7.7 inches) Interpretive groups Land capability classification (irrigated): 3e Land capability classification ftionirrigated: 4e Hydrologic Soil Group: A Ecological site: R067BY024CO - Sandy Plains Hydric soil rating: No Minor Components Kim Percent of map unit. 12 percent Hydric soil rating: No Vona Percent of map unit: 3 percent Hydric soil rating: No 82- Wiley -Colby complex, sI to 3 percent slopes Map Unit Setting National map unit symbol: 3643 Elevation: 4,850 to 5,000 feet Mean annual precipitation: 12 to 16 inches Mean annual air temperature: 48 to 54 degrees Frost -free period: 135 to 170 days F 18 Custom Soil Resource Report Farmland classification: Prime farmland if irrigated Map Unit Composition Wiley and similar soils: 60 percent Colby and similar soils: 30 percent Minor components: 10 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Wiley Setting Landform: Plains Down -slope shape: Linear Across -slope shape: Linear Parent material: Calcareous eolian deposits Typical profile Hi - 0 to ii inches: silt loam 1-12 - 11 to 60 inches: silty clay loam H3 - 60 to 64 inches: silty clay loam Properties and qualities Slope: 1 to 3 percent Depth to restrictive feature: More than 80 inches Drainage class: Well drained Runoff class: Low Capacity of the most limiting layer to transmit water'KsatQ: Moderately high to high (0.60 to 2.00 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Fre q u e n c y of ponding: n dirt g: None calcium carbonate, maximum content: 15 percent Maximum salinity Nonsaline to very slightly saline (0.0 to 2.0 mmhoslcm) Available water supply, 0 to 60 inches: High (about 11.7 inches) Interpretive groups Land capability classification (irrigated): 2e Land capability classification (nonirrigated): 4e Hydrologic Soil Group: B Ecological site: RD67B 002 O - Loamy Plains Hydric soil rating: No Description of Colby Setting Landform: Plains Down -slope shape: Linear Across -slope shape: Linear Parent material: Calcareous eolian deposits Typical profile Hi - 0 to 7 inches. loam H2 - 7 to 60 inches: silt loam Properties and qualities Slope: 1 to 3 percent Depth to restrictive feature: More than 80 inches Drainage class: Well drained 19 Custom Soil Resource Report Runoff class: Low Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.57 to 2.00 inthr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Calcium carbonate, maximum content: 15 percent Available water supply, 0 to 60 inches: High (about 10.6 inches) Interpretive groups Land capability classification (irrigated): 3e Land capability classification (nonirrigated): 4e Hydrologic Soil Group: B Ecological site: RQ67BYQ02CO - Loamy Plains Hydric soil rating: No Minor Components Weld Percent of map unit: 4 percent Hydric soil rating: No IHlelldt Percent of map unit: 4 percent Hydric soil rating: No Keith Percent of map unit: 2 percent Hydric soil rating: No 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.nrcs.usda.gov/wpsiportali nresldetaillnationallsoilst'acid=nres142p2_U 54262 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/wpsiportallnresldetail/national/soils/ ?cid=nres142p2_0 77 Soil Survey Staff. 2010. Keys to soil taxonomy. 11th edition. U.S. Department of Agriculture, Natural Resources Conservation Service. http:// www.nrcs.usda.goviwpsiportalinrcsidetailinationalisoilsncid=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.nrcs.usda.goviwpsiportalinrcsidetailisoilsi home/?cid=nresl 42p2_OS3374 United States Department of Agriculture, Natural Resources Conservation Service. National range and pasture handbook. http:IIwww.nres.usda.goviwpslportallnresl {detail/national/I and use/rang epasture/?cid=stelprdb104 0► 4 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/soilslscientists/?cid=nres14 'p _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. J.S. Department of Agriculture Handbook 296. http://www.nres.usda.gov/wpslportal/arcs/detail/nationallsoiIs!? cid =nres 142 p2_0 53624 United States Department of Agriculture, Soil Conservation Service. 1961. Land capability classification. U.S. Department of Agriculture Handbook 210. http:// www.nrcs.usda.gov/InternetiFSE D U M E NTS/n res 142p _052290. pd f 22 Soil Information for All Uses Suitabilities and Limitations for Use The Suitabilities and Limitations for Use section includes various soil interpretations displayed as thematic maps with a summary table for the soil map units in the selected area of interest. A single value or rating for each map unit is generated by aggregating the interpretive ratings of individual map unit components. This aggregation process is defined for each interpretation. Land Classifications Land Classifications are specified land use and management groupings that are assigned to soil areas because combinations of soil have similar behavior for specified practices. Most are based on soil properties and other factors that directly influence the specific use of the soil. Example classifications include ecological site classification, farmland classification, irrigated and nonirrigated land capability classification, and hydric rating. Farmland Classification (Fusaro, LLC) Farmland classification identifies map units as prime farmland, farmland of statewide importance, farmland of local importance, or unique farmland. It identifies the location and extent of the soils that are best suited to food, feed, fiber, forage, and oilseed crops. NRCS policy and procedures on prime and unique farmlands are published in the "Federal Register," Vol. 43, No. 21, January 31, 1978. 15 Custom oil Resource Report MAP LEGEND Area of Interest (Aol) Area of Interest (AOl) Soils Soil Rating Polygons Not prime farmland All areas are prime farmland Prime farmland if drained Prime farmland if protected from flooding or not frequently flooded during the growing season Prime farmland if irrigated Prime farmland if drained and either protected from flooding or not frequently flooded during the growing season Prime farmland If irrigated and drained Prime farmland if irrigated and either protected from flooding or not frequently flooded during the growing season Prime farmland if subsoiled, completely removing the root inhibiting soil layer Prime farmland if irrigated and the product of I (soil erodibility) x C (climate factor) does not exceed 60 Prime farmland if irrigated and reclaimed of excess salts and sodium Farmland of statewide importance Farmland of statewide importance, if drained Farmland of statewide importance, if protected from flooding or not frequently flooded during the growing season Farmland of statewide importance, if irrigated Farmland of statewide importance, if drained and either protected from flooding or not frequently flooded during the growing season Farmland of statewide importance, if irrigated and drained Farmland of statewide importance, if irrigated and either protected from flooding or not frequently flooded during the growing season Farmland of statewide importance, if subsoiled, completely removing the root inhibiting soil layer Farmland of statewide importance, if irrigated and the product of I (soil erodibility) x C (climate factor) does not exceed 60 Farmland of statewide importance, if irrigated and reclaimed of excess salts and sodium Farmland of statewide importance, if drained or either protected from flooding or not frequently flooded during the growing season Farmland of statewide importance, if warm enough, and either drained or either protected from flooding or not frequently flooded during the growing season Farmland of statewide importance, if warm enough Farmland of statewide importance, if thawed Farmland of local importance Farmland of local importance, if irrigated Farmland of unique importance Not rated or not available Soil Rating Lines idass Not prime farmland • All areas are prime farmland rano Prime farmland if drained Prime farmland if protected from flooding or not frequently flooded during the growing season • Prime farmland if irrigated A • Prime farmland if drained and either protected from flooding or not frequently flooded during the growing season pass pass Prime farmland if Irrigated and drained Prime farmland if Irrigated and either protected from flooding or not frequently flooded during the growing season 17 Custom Soil Resource Report Prime farmland if subsoiled, completely removing the root inhibiting soil layer Prime farmland if Irrigated and the product of I (soil erodiblllity) x C (climate factor) does not exceed 60 Prime farmland if irrigated and reclaimed of excess salts and sodium Farmland of statewide importance Farmland of statewide importance, if drained Farmland of statewide importance, if protected from flooding or not frequently flooded during the growing season Farmland of statewide importance, if irrigated eolslo Farmland of statewide Importance, if drained and either protected from flooding or not frequently flooded during the growing season Farmland of statewide Importance, if irrigated and drained pass Farmland of statewide Importance, if irrigated and either protected from flooding or not frequently flooded during the growing season Farmland of statewide importance, if subsoiled, completely removing the root inhibiting soil layer rpriT,10 Farmland of statewide Importance, if irrigated and the product of I (soil erodibility) x C (climate factor) does not exceed 60 pass Farmland of statewide Importance, if irrigated and reclaimed of excess salts and sodium • • Farmland of statewide Importance, if drained or either protected from flooding or not frequently flooded during the growing season Farmland of statewide importance, if warm enough, and either drained or either protected from flooding or not frequently flooded during the growing season "is Farmland of statewide importance, if warm enough Farmland of statewide importance, if thawed Pr' -'111 Farmland of local importance ograiss Eir Farmland of local importance, if irrigated r 0 Farmland of unique Importance Not rated or not available Soil Rating Points Not prime farmland All areas are prime farmland Prime farmland if drained Prime farmland if protected from flooding or not frequently flooded during the growing season Prime farmland if irrigated Prime farmland if drained and either protected from flooding or not frequently flooded during the growing season Prime farmland if irrigated and drained ® Prime farmland if irrigated and either protected from flooding or not frequently flooded during the growing season a 0 0 Prime farmland if subsoiled, completely removing the root inhibiting soil layer Prime farmland if irrigated and the product of I (soil erodibil ty) x C (climate factor) does not exceed 60 Prime farmland if irrigated and reclaimed of excess salts and sodium Farmland of statewide importance Farmland of statewide importance, if drained Farmland of statewide importance, if protected from flooding or not frequently flooded during the growing season Farmland of statewide importance, if irrigated 18 Custom Soil Resource Report 0 • • 0 Farmland of statewide importance, if drained and either protected from flooding or not frequently flooded during the growing season Farmland of statewide importance, if Irrigated and drained Farmland of statewide importance, if irrigated and either protected from flooding or not frequently flooded during the growing season Farmland of statewide im aortance, if subsoiled, completely removing the root inhibiting soil layer Farmland of statewide Importance, if irrigated and the product of I (soil erodibility) x C (climate factor) does not exceed 60 • 0 • ■ ■ • Farmland of statewide Importance, if irrigated and reclaimed of excess salts and sodium Farmland of statewide Importance, if drained or either protected from flooding or not frequently flooded during the growing season Farm land of statewide Importance, if warm enough, and either drained or either protected from flooding or not frequently flooded during the growing season Farmland of statewide importance, if warm enough Farmland of statewide importance, if thawed Farmland of local Importance Farmland of local importance, if irrigated 0 Farmland of unique im aorta nce 0 Not rated or not available Water Features Steams and Canals Transportation Rails imitO Interstate Highways US Routes Major Roads Local Roads Background Aerial Photography The soil surveys that comprise your AOI were mapped at 1:24,000. Warning: Soil Map may not be valid at this scale. Enlargement of maps beyond the scale of mapping can cause misunderstanding of the detail of mapping and accuracy of soil line placement. The maps do not show the small areas of contrasting soils that could have been shown at a more detailed scale. Please rely on the bar scale on each map sheet for map measurements. Source of Map: Natural Resources Conservation Service Web Soil Survey URL: Coordinate System: Web Mercator (EPSG:3857) Maps from the Web Soil Survey are based on the Web Mercator projection, which preserves direction and shape but distorts distance and area. A projection that preserves area, such as the Albers equal-area conic projection, should be used if more accurate calculations of distance or area are required. This product is generated from the USDA-NRCS certified data as of the version date(s) listed below. Soil Survey Area: Weld County, Colorado, Southern Part Survey Area Data: Version 20, Aug 31, 2021 Soil map units are labeled (as space allows) for map scales 1:50,000 or larger. Date(s) aerial images were photographed: Jun 8, 2021 — Jun 12, 2021 The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background imagery displayed on these maps. As a result, some minor shifting of map unit boundaries may be evident. 19 Custom Soil Resource Report Table Farmlnd Classification (Fusaro, LLG) Map unit symbol Map unit name Rating Acres in AOI Percent of AOI 47 Olney fine to 3 sandy loam, percent slopes 1 Prime irrigated farmland if and the product of I (soil erodibility) x C (climate factor) does not exceed 60 57.8 100.E°, o Totals for Area of Interest 57.8 100.0% Rating OptionsFarrnland Classification (Fusaro, LLC) Aggregation Method: No Aggregation Necessary Tie -break Rule: Lower 20 Custom Soil Resource Report Soil Properties and Qualities The Soil Properties and Qualities section includes various soil properties and qualities displayed as thematic maps with a summary table for the soil map units in the selected area of interest. A single value or rating for each map unit is generated byaggregating the interpretive ratings of individual map unit components. This aggregation process is defined for each property or quality. Soil Qualities and Features Soil qualities are behavior and performance attributes that are not directly measured, but are inferred from observations of dynamic conditions and from soil properties. Example soil qualities include natural drainage, and frost action. Soil features are attributes that are not directly part of the soil. Example soil features include slope and depth to restrictive layer. These features can greatly impact the use and management of the soil. Hydrologic Soil Group (Fusaro, LLC) Hydrologic soil groups are based on estimates of runoff potential. Soils are assigned to one of four groups according to the rate of water infiltration when the soils are not protected by vegetation, are thoroughly wet, and receive precipitation from long -duration storms. The soils in the United States are assigned to four groups (A, B, C, and 'D) and three dual classes (A/D, BID, and C/D). The groups are defined as follows: Group A. Soils having a high infiltration rate (low runoff potential) when thoroughly wet. These consist mainly of deep, well drained to excessively drained sands or gravelly sands. These soils have a high rate of water transmission. Group E. Soils having a moderate infiltration rate when thoroughly wet. These consist chiefly of moderately deep or deep, moderately well drained or well drained soils that have moderately fine texture to moderately coarse texture. These soils have a moderate rate of water transmission. Group C. Soils having a slow infiltration rate when thoroughly wet. These consist chiefly of soils having a layer that impedes the downward movement of water or soils of moderately fine texture or fine texture. These soils have a slow rate of water transmission. Group D. Soils having a very slow infiltration rate (high runoff potential) when thoroughly wet. These consist chiefly of clays that have a high shrink -swell potential, soils that have a high water table, soils that have a claypan or clay layer at 21 Custom Soil Resource Report or near the surface, and soils that are shallow over nearly impervious material. These soils have a very slow rate of water transmission. If a soil is assigned to a dual hydrologic group (AID, BID, or CID), the first letter is for drained areas and the second is for undrained areas. Only the soils that in their natural condition are in group D are assigned to dual classes. 22 Custom Soil Resource Report Area of Interest (0i) MAP LEGEND MAP INFORMATION The soil surveys that comprise your AO1 were mapped at Area of Interest (AO!) 1:24,000. 0/O Soils Soil Rating Polygons A AID B B/D C dio D Not rated or not available Soil Rating Lines — A pasts AID pass C — CID , D • Not rated or not available Soil Rating Points O A O AID B a BID 0 ❑ Not rated or not available Water Features Streams and Canals Transportation RalCs rtisio Interstate Highways US Routes Major Roads Local Roads Background Aerial Photography Warning: Soil Map may not be valid at this scale. Enlargement of maps beyond the scale of mapping can cause misunderstanding of the detail of mapping and accuracy of soil line placement. The maps do not show the small areas of contrasting soils that could have been shown at a more detailed scale. Please rely on the bar scale on each map sheet for map measurements. Source of Map: Natural Resources Conservation Service Web Soil Survey URL: Coordinate System: Web Mercator (EPSG:3857) Maps from the Web Soil Survey are based on the Web Mercator projection, which preserves direction and shape but distorts distance and area. A projection that preserves area, such as the Albers equal-area conic projection, should be used if more accurate calculations of distance or area are required. This product is generated from the USDA -N RCS certified data as of the version date(s) listed below. Soil Survey Area: Weld County, Colorado, Southern Part Survey Area Data: Version 20, Aug 31, 2021 Soil map units are labeled (as space allows) for map scales 1:50,000 or larger. Date(s) aerial images were photographed: Jun 8, 2021 —Jun 12, 2021 The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background imagery displayed on these maps. As a result, some minor shifting of map unit boundaries may be evident. 24 Custom Soil Resource Report Table Hydrologic Soil Group (Fusaro, LLC) Map unit symbol Map unit name Rating Acres in AOI Percent of AOI 47 Olney fine to 3 sandy loam, percent slopes I B 57.8 100.0% Totals for Area of Interest 57.8 100.0% Rating Options Hydrologic Soil Group (Fusaro, LLC) Aggregation Method: Dominant Condition Component Percent Cutoff.- None Specified Tie -break Rule. Higher 25 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.nrcs.usda.gov/wpsiportali nresldetaillnationallsoilst'acid=nres142p2_U 54262 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/wpsiportallnresldetail/national/soils/ ?cid=nres142p2_0 77 Soil Survey Staff. 2010. Keys to soil taxonomy. 11th edition. U.S. Department of Agriculture, Natural Resources Conservation Service. http:// www.nrcs.usda.goviwpsiportalinrcsidetailinationalisoilsncid=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.nrcs.usda.goviwpsiportalinrcsidetailisoilsi home/?cid=nresl 42p2_OS3374 United States Department of Agriculture, Natural Resources Conservation Service. 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