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HomeMy WebLinkAboutSW4220502_Soils/Geotechnical Report_20220514USDA United States Department of Agriculture N RCS 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 Alamance County, North Carolina Snow Camp Solar, NC January 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.nres.usda.gov/wps/ portal/nres/main/soils/health/) and certain conservation and engineering applications. For more detailed information, contact your local USDA Service Center (https:Hoffices.sc.egov.usda.gov/locator/app?agency=nres) or your NRCS State Soil Scientist (http://www.nres.usda.gov/wps/portal/nres/detail/soils/contactus/? cid=nres142p2_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 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. Contents Preface........................................................................................................... . How Soil Surveys Are Made.......................................................................... Soil Ma Soil Map (Snow Camp Solar, NC)................................................................ Legend.......................................................................................................... Map Unit Legend (Snow Camp Solar, NC) ................................................... Map Unit Descriptions (Snow Camp Solar, NC) ........................................... Alamance County, North Carolina............................................................. ChA—Chewacla loam, 0 to 2 percent slopes, frequently flooded......... CnB2—Cullen clay loam, 2 to 6 percent slopes, moderately eroded.... CnC2—Cullen clay loam, 6 to 10 percent slopes, moderately eroded.. CnD2—Cullen clay loam, 10 to 15 percent slopes, moderately eroded HnB—Herndon silt loam, 2 to 6 percent slopes .................................... HnC—Herndon silt loam, 6 to 10 percent slopes .................................. MaB—Mandale-Secrest complex, 2 to 6 percent slopes ...................... W—Water............................................................................................. . Soil Information for All Uses......................................................................... Suitabilities and Limitations for Use.............................................................. Building Site Development........................................................................ Corrosion of Steel (Snow Camp Solar, NC) .......................................... Soil Properties and Qualities........................................................................ Soil Qualities and Features....................................................................... Depth to a Selected Soil Restrictive Layer: Lithic bedrock (Snow CampSolar, NC)............................................................................. Depth to a Selected Soil Restrictive Layer: Paralithic bedrock (Snow CampSolar, NC)............................................................................. WaterFeatures......................................................................................... Depth to Water Table (Snow Camp Solar, NC) ..................................... .2 ..5 .8 .9 10 11 11 13 13 14 15 16 17 19 20 22 23 23 23 23 27 27 27 30 34 35 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 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 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. In In 641700 35° 52' 0" N g 0 g r 35° 51' 31" N 641700 641800 641900 642000 642100 642200 642300 b Map Scale: 1:6,220 if printed on A landscape (11" x 8.5") sheet. Meters N 0 50 100 200 300 Feet 0 300 600 1200 1800 Map projection: Web Mercator Comer coordinates: WGS84 Edge tics: UTM Zone 17N WGS84 9 641800 641900 642000 642100 Custom Soil Resource Report Soil Map (Snow Camp Solar, NC) 642200 642300 6424W 642500 642600 642700 642800 642900 643000 35° 52' 0" N r r g 0 r r 35° 51' 31" N 642400 642500 642600 642700 642800 642900 64300D v MAP LEGEND Area of Interest (AOI) 0 Area of Interest (AOI) Soils 0 Soil Map Unit Polygons Soil Map Unit Lines Soil Map Unit Points Special Point Features Iwo Blowout Borrow Pit Clay Spot Closed Depression Gravel Pit �i Gravelly Spot Landfill A. Lava Flow Marsh or swamp Mine or Quarry Miscellaneous Water Perennial Water Rock Outcrop Saline Spot Sandy Spot Severely Eroded Spot Sinkhole Slide or Slip oa Sodic Spot Custom Soil Resource Report MAP INFORMATION Spoil Area The soil surveys that comprise your AOI were mapped at 1:12,000. Stony Spot Very Stony Spot Warning: Soil Map may not be valid at this scale. Wet Spot Enlargement of maps beyond the scale of mapping can cause Other misunderstanding of the detail of mapping and accuracy of soil �- Special Line Features line placement. The maps do not show the small areas of contrasting soils that could have been shown at a more detailed Water Features scale. Streams and Canals Transportation Please rely on the bar scale on each map sheet for map E F Rails measurements. . 0 Interstate Highways Source of Map: Natural Resources Conservation Service US Routes Web Soil Survey URL: Coordinate System: Web Mercator (EPSG:3857) Major Roads Local Roads Maps from the Web Soil Survey are based on the Web Mercator projection, which preserves direction and shape but distorts Background distance and area. A projection that preserves area, such as the Aerial Photography 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: Alamance County, North Carolina Survey Area Data: Version 20, Sep 3, 2021 Soil map units are labeled (as space allows) for map scales 1:50,000 or larger. Date(s) aerial images were photographed: Jul 28, 2019—Jul 30, 2019 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 (Snow Camp Solar, NC) Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI ChA Chewacla loam, 0 to 2 percent 1.6 2.1 % slopes, frequently flooded CnB2 Cullen clay loam, 2 to 6 percent 20.8 28.1 % slopes, moderately eroded CnC2 Cullen clay loam, 6 to 10 1.6 2.1 % percent slopes, moderately eroded CnD2 Cullen clay loam, 10 to 15 0.0 0.0% percent slopes, moderately eroded HnB Herndon silt loam, 2 to 6 9.7 13.0% percent slopes HnC Herndon silt loam, 6 to 10 0.1 0.2% percent slopes MaB Mandale-Secrest complex, 2 to 39.0 52.6% 6 percent slopes W Water 1.4 1.9% Totals for Area of Interest 74.1 100.0% Map Unit Descriptions (Snow Camp Solar, NC) 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 11 Custom Soil Resource Report generally are in small areas and could not be mapped separately because of the scale used. Some small areas of strongly contrasting soils or miscellaneous areas are identified by a special symbol on the maps. If included in the database for a given area, the contrasting minor components are identified in the map unit descriptions along with some characteristics of each. A few areas of minor components may not have been observed, and consequently they are not mentioned in the descriptions, especially where the pattern was so complex that it was impractical to make enough observations to identify all the soils and miscellaneous areas on the landscape. The presence of minor components in a map unit in no way diminishes the usefulness or accuracy of the data. The objective of mapping is not to delineate pure taxonomic classes but rather to separate the landscape into Iandforms or Iandform 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 Alamance County, North Carolina ChA—Chewacla loam, 0 to 2 percent slopes, frequently flooded Map Unit Setting National map unit symbol: 2xn4h Elevation: 330 to 660 feet Mean annual precipitation: 39 to 47 inches Mean annual air temperature: 55 to 63 degrees F Frost -free period: 200 to 250 days Farmland classification: Prime farmland if drained and either protected from flooding or not frequently flooded during the growing season Map Unit Composition Chewacla, frequently flooded, and similar soils: 90 percent Minor components: 10 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Chewacla, Frequently Flooded Setting Landform: Flood plains Landform position (two-dimensional): Toeslope Landform position (three-dimensional): Tread, talf Down -slope shape: Linear Across -slope shape: Linear Parent material: Loamy alluvium derived from igneous and metamorphic rock Typical profile Ap - 0 to 6 inches: loam Bw - 6 to 52 inches: sandy clay loam Cg - 52 to 80 inches: stratified sandy loam Properties and qualities Slope: 0 to 2 percent Depth to restrictive feature: More than 80 inches Drainage class: Somewhat poorly drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.20 to 2.00 in/hr) Depth to water table: About 6 to 24 inches Frequency of flooding: NoneFrequent Frequency of ponding: None Available water supply, 0 to 60 inches: Moderate (about 7.6 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 4w Hydrologic Soil Group: B/D Hydric soil rating: No Minor Components Wehadkee, frequently flooded Percent of map unit. 5 percent Landform: Flood plains Landform position (two-dimensional): Toeslope 13 Custom Soil Resource Report Landform position (three-dimensional): Tread, talf Down -slope shape: Linear Across -slope shape: Linear Hydric soil rating: Yes Riverview, frequently flooded Percent of map unit. 5 percent Landform: Flood plains Landform position (two-dimensional): Toeslope Landform position (three-dimensional): Tread, talf Down -slope shape: Linear Across -slope shape: Linear Hydric soil rating: No CnB2—Cullen clay loam, 2 to 6 percent slopes, moderately eroded Map Unit Setting National map unit symbol: 2xn4j Elevation: 330 to 980 feet Mean annual precipitation: 39 to 47 inches Mean annual air temperature: 55 to 63 degrees F Frost -free period: 200 to 250 days Farmland classification: All areas are prime farmland Map Unit Composition Cullen, moderately eroded, and similar soils: 95 percent Minor components: 5 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Cullen, Moderately Eroded Setting Landform: Imerfluves Landform position (two-dimensional): Summit Landform position (three-dimensional): Interfluve Down -slope shape: Convex Across -slope shape: Convex Parent material: Mixed residuum weathered from igneous and metamorphic rock Typical profile Ap - 0 to 10 inches: clay loam Bt - 10 to 50 inches: clay BC - 50 to 69 inches: silty clay CB - 69 to 80 inches: silty clay loam Properties and qualities Slope: 2 to 6 percent Depth to restrictive feature: More than 80 inches Drainage class: Well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.57 to 1.98 in/hr) 14 Custom Soil Resource Report Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Available water supply, 0 to 60 inches: Moderate (about 7.2 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 3e Hydrologic Soil Group: B Hydric soil rating: No Minor Components Enon, moderately eroded Percent of map unit. 5 percent Landform: Imerfluves Landform position (two-dimensional): Summit Landform position (three-dimensional): Interfluve Down -slope shape: Convex Across -slope shape: Convex Hydric soil rating: No CnC2—Cullen clay loam, 6 to 10 percent slopes, moderately eroded Map Unit Setting National map unit symbol: 2xn4k Elevation: 330 to 980 feet Mean annual precipitation: 39 to 47 inches Mean annual air temperature: 55 to 63 degrees F Frost -free period: 200 to 250 days Farmland classification: Farmland of statewide importance Map Unit Composition Cullen, moderately eroded, and similar soils: 95 percent Minor components: 5 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Cullen, Moderately Eroded Setting Landform: Imerfluves Landform position (two-dimensional): Shoulder, backslope Landform position (three-dimensional): Side slope Down -slope shape: Concave Across -slope shape: Linear Parent material: Mixed residuum weathered from igneous and metamorphic rock Typical profile Ap - 0 to 10 inches: clay loam Bt - 10 to 50 inches: clay BC - 50 to 69 inches: silty clay 15 Custom Soil Resource Report CB - 69 to 80 inches: silty clay loam Properties and qualities Slope: 6 to 10 percent Depth to restrictive feature: More than 80 inches Drainage class: Well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.57 to 1.98 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Available water supply, 0 to 60 inches: Moderate (about 7.2 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 3e Hydrologic Soil Group: B Hydric soil rating: No Minor Components Enon, moderately eroded Percent of map unit. 5 percent Landform: I me rfluves Landform position (two-dimensional): Shoulder, backslope Landform position (three-dimensional): Side slope Down -slope shape: Concave Across -slope shape: Linear Hydric soil rating: No CnD2—Cullen clay loam, 10 to 15 percent slopes, moderately eroded Map Unit Setting National map unit symbol: 2xn4l Elevation: 330 to 980 feet Mean annual precipitation: 39 to 47 inches Mean annual air temperature: 55 to 63 degrees F Frost -free period: 200 to 250 days Farmland classification: Farmland of statewide importance Map Unit Composition Cullen, moderately eroded, and similar soils: 95 percent Minor components: 5 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Cullen, Moderately Eroded Setting Landform: Imerfluves Landform position (two-dimensional): Backslope Landform position (three-dimensional): Side slope it. Custom Soil Resource Report Down -slope shape: Concave Across -slope shape: Linear Parent material: Mixed residuum weathered from igneous and metamorphic rock Typical profile Ap - 0 to 10 inches: clay loam Bt - 10 to 50 inches: clay BC - 50 to 69 inches: silty clay CB - 69 to 80 inches: silty clay loam Properties and qualities Slope: 10 to 15 percent Depth to restrictive feature: More than 80 inches Drainage class: Well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.57 to 1.98 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Available water supply, 0 to 60 inches: Moderate (about 7.2 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 4e Hydrologic Soil Group: B Hydric soil rating: No Minor Components Enon, moderately eroded Percent of map unit. 5 percent Landform: I me rfluves Landform position (two-dimensional): Backslope Landform position (three-dimensional): Side slope Down -slope shape: Concave Across -slope shape: Linear Hydric soil rating: No HnB—Herndon silt loam, 2 to 6 percent slopes Map Unit Setting National map unit symbol. 2xn5c Elevation: 70 to 980 feet Mean annual precipitation: 39 to 47 inches Mean annual air temperature: 55 to 63 degrees F Frost -free period: 200 to 250 days Farmland classification: All areas are prime farmland Map Unit Composition Herndon and similar soils: 90 percent Minor components: 10 percent 17 Custom Soil Resource Report Estimates are based on observations, descriptions, and transects of the mapunit. Description of Herndon Setting Landform: Imerfluves Landform position (two-dimensional): Summit Landform position (three-dimensional): Interfluve Down -slope shape: Convex Across -slope shape: Convex Parent material: Residuum weathered from phyllite Typical profile Ap - 0 to 8 inches: silt loam Bt1 - 8 to 12 inches: silty clay loam Bt2 - 12 to 44 inches: clay C - 44 to 80 inches: silt loam Properties and qualities Slope: 2 to 6 percent Depth to restrictive feature: More than 80 inches Drainage class: Well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.57 to 1.98 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Maximum salinity: Nonsaline to very slightly saline (0.0 to 2.0 mmhos/cm) Available water supply, 0 to 60 inches: Moderate (about 8.9 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 2e Hydrologic Soil Group: B Hydric soil rating: No Minor Components Lignum Percent of map unit: 5 percent Landform: Imerfluves Landform position (two-dimensional): Summit, shoulder Landform position (three-dimensional): Interfluve Down -slope shape: Convex Across -slope shape: Convex Hydric soil rating: No Nanford Percent of map unit: 5 percent Landform: Imerfluves Landform position (two-dimensional): Summit, shoulder Landform position (three-dimensional): Interfluve Down -slope shape: Convex Across -slope shape: Convex Hydric soil rating: No 18 Custom Soil Resource Report HnC—Herndon silt loam, 6 to 10 percent slopes Map Unit Setting National map unit symbol. 2xn5d Elevation: 330 to 980 feet Mean annual precipitation: 39 to 47 inches Mean annual air temperature: 55 to 63 degrees F Frost -free period: 200 to 250 days Farmland classification: Farmland of statewide importance Map Unit Composition Herndon and similar soils: 90 percent Minor components: 10 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Herndon Setting Landform: I me rfluves Landform position (two-dimensional): Shoulder, backslope Landform position (three-dimensional): Side slope Down -slope shape: Concave Across -slope shape: Linear Parent material: Residuum weathered from phyllite Typical profile Ap - 0 to 8 inches: silt loam Bt1 - 8 to 12 inches: silty clay loam Bt2 - 12 to 44 inches: clay C - 44 to 80 inches: silt loam Properties and qualities Slope: 6 to 10 percent Depth to restrictive feature: More than 80 inches Drainage class: Well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.57 to 1.98 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Maximum salinity. Nonsaline to very slightly saline (0.0 to 2.0 mmhos/cm) Available water supply, 0 to 60 inches: Moderate (about 8.9 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 3e Hydrologic Soil Group: B Hydric soil rating: No 19 Custom Soil Resource Report Minor Components Lignum Percent of map unit: 5 percent Landform: Imerfluves Landform position (two-dimensional): Shoulder, backslope Landform position (three-dimensional): Side slope Down -slope shape: Convex Across -slope shape: Linear Hydric soil rating: No Nanford Percent of map unit: 5 percent Landform: Imerfluves Landform position (two-dimensional): Shoulder, backslope Landform position (three-dimensional): Side slope Down -slope shape: Concave Across -slope shape: Linear Hydric soil rating: No MaB—Mandale-Secrest complex, 2 to 6 percent slopes Map Unit Setting National map unit symbol: 2xn5y Elevation: 330 to 980 feet Mean annual precipitation: 39 to 47 inches Mean annual air temperature: 55 to 63 degrees F Frost -free period: 200 to 250 days Farmland classification: Farmland of statewide importance Map Unit Composition Mandale and similar soils: 50 percent Secrest and similar soils: 42 percent Minor components: 8 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Mandale Setting Landform: Flats on interfluves, drainageways on interfluves, depressions on interfluves, sloughs on interfluves Landform position (two-dimensional): Summit, toeslope Landform position (three-dimensional): Interfluve, dip, rise, talf Down -slope shape: Linear, convex Across -slope shape: Linear, convex, concave Parent material: Residuum weathered from argillite Typical profile A - 0 to 7 inches: silt loam Bt - 7 to 48 inches: silty clay loam 20 Custom Soil Resource Report BCtg - 48 to 55 inches: clay loam C - 55 to 64 inches: fine sandy loam Cr - 64 to 78 inches: bedrock R - 78 to 80 inches: bedrock Properties and qualities Slope: 2 to 6 percent Depth to restrictive feature: 60 to 80 inches to lithic bedrock; 60 to 80 inches to paralithic bedrock Drainage class: Somewhat poorly drained Capacity of the most limiting layer to transmit water (Ksat): Very low to moderately low (0.00 to 0.14 in/hr) Depth to water table: About 12 to 24 inches Frequency of flooding: None Frequency of ponding: None Available water supply, 0 to 60 inches: High (about 10.2 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 3w Hydrologic Soil Group: C/D Hydric soil rating: No Description of Secrest Setting Landform: Flats on interfluves, drainageways on interfluves, depressions on interfluves, sloughs on interfluves Landform position (two-dimensional): Summit, toeslope Landform position (three-dimensional): Interfluve, dip, rise, talf Down -slope shape: Linear, convex Across -slope shape: Linear, concave, convex Parent material: Residuum weathered from argillite Typical profile A - 0 to 6 inches: silt loam Bt - 6 to 41 inches: silty clay loam BC - 41 to 49 inches: loam Cr - 49 to 61 inches: bedrock R - 61 to 80 inches: bedrock Properties and qualities Slope: 2 to 6 percent Depth to restrictive feature: 40 to 60 inches to paralithic bedrock; 60 to 80 inches to Iithic bedrock Drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Very low to moderately high (0.00 to 0.60 in/hr) Depth to water table: About 18 to 30 inches Frequency of flooding: None Frequency of ponding: None Available water supply, 0 to 60 inches: Moderate (about 8.8 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 2e Hydrologic Soil Group: C 21 Custom Soil Resource Report Hydric soil rating: No Minor Components Biscoe Percent of map unit: 8 percent Landform: Flats on interfluves, sloughs on interfluves, drainageways on interfluves, depressions on interfluves Landform position (two-dimensional): Shoulder, backslope, toeslope, summit Landform position (three-dimensional): Side slope, dip, rise, talf Down -slope shape: Linear, convex Across -slope shape: Linear, concave, convex Hydric soil rating: No W—Water Map Unit Composition Water.- 100 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Water Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 8w Hydric soil rating: No 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. Building Site Development Building site development interpretations are designed to be used as tools for evaluating soil suitability and identifying soil limitations for various construction purposes. As part of the interpretation process, the rating applies to each soil in its described condition and does not consider present land use. Example interpretations can include corrosion of concrete and steel, shallow excavations, dwellings with and without basements, small commercial buildings, local roads and streets, and lawns and landscaping. Corrosion of Steel (Snow Camp Solar, NC) "Risk of corrosion" pertains to potential soil -induced electrochemical or chemical action that corrodes or weakens uncoated steel. The rate of corrosion of uncoated steel is related to such factors as soil moisture, particle -size distribution, acidity, and electrical conductivity of the soil. Special site examination and design may be needed if the combination of factors results in a severe hazard of corrosion. The steel in installations that intersect soil boundaries or soil layers is more susceptible to corrosion than the steel in installations that are entirely within one kind of soil or within one soil layer. The risk of corrosion is expressed as "low," "moderate," or "high." 23 In In 641700 35° 52' 0" N g 0 g r 35° 51' 31" N 641700 641800 641900 642000 642100 642200 642300 b Map Scale: 1:6,220 if printed on A landscape (11" x 8.5") sheet. Meters N 0 50 100 200 300 Feet 0 300 600 1200 1800 Map projection: Web Mercator Comer coordinates: WGS84 Edge tics: UTM Zone 17N WGS84 24 Custom Soil Resource Report Map —Corrosion of Steel (Snow Camp Solar, NC) 641800 641900 642000 642100 642200 642300 642400 642500 642600 642700 642800 642900 643000 35° 52' 0" N r r g 0 r r 35° 51' 31" N 642400 642500 642600 642700 642800 642900 64300D v Custom Soil Resource Report MAP LEGEND MAP INFORMATION Area of Interest (A01) Background The soil surveys that comprise your AOI were mapped at 0 Area of Interest (AOI) Aerial Photography 1 :12,000. Soils Soil Rating Polygons Warning: Soil Map may not be valid at this scale. . High Enlargement of maps beyond the scale of mapping can cause 0 Moderate misunderstanding of the detail of mapping and accuracy of soil 0 Low line placement. The maps do not show the small areas of contrasting soils that could have been shown at a more detailed 0 Not rated or not available scale. Soil Rating Lines High Please rely on the bar scale on each map sheet for map measurements. N 0 Moderate 0 Low Source of Map: Natural Resources Conservation Service Web Soil Survey URL: . 0 Not rated or not available Coordinate System: Web Mercator (EPSG:3857) Soil Rating Points High Maps from the Web Soil Survey are based on the Web Mercator projection, which preserves direction and shape but distorts ❑ Moderate distance and area. A projection that preserves area, such as the Low Albers equal-area conic projection, should be used if more 0 accurate calculations of distance or area are required. 0 Not rated or not available Water Features This product is generated from the USDA-NRCS certified data as of the version date(s) listed below. Streams and Canals Transportation Soil Survey Area: Alamance County, North Carolina Rails Survey Area Data: Version 20, Sep 3, 2021 Interstate Highways Soil map units are labeled (as space allows) for map scales US Routes 1:50,000 or larger. Major Roads Date(s) aerial images were photographed: Jul 28, 2019—Jul 30, Local Roads 2019 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. 25 Custom Soil Resource Report Table —Corrosion of Steel (Snow Camp Solar, NC) Map unit symbol Map unit name Rating Acres in AOI Percent of AOI ChA Chewacla loam, 0 to 2 High 1.6 2.1 % percent slopes, frequently flooded CnB2 Cullen clay loam, 2 to 6 High 20.8 28.1 % percent slopes, moderately eroded CnC2 Cullen clay loam, 6 to 10 High 1.6 2.1 % percent slopes, moderately eroded CnD2 Cullen clay loam, 10 to High 0.0 0.0% 15 percent slopes, moderately eroded HnB Herndon silt loam, 2 to 6 Moderate 9.7 13.0% percent slopes HnC Herndon silt loam, 6 to Moderate 0.1 0.2% 10 percent slopes MaB Mandale-Secrest High 39.0 52.6% complex, 2 to 6 percent slopes W Water 1.4 1.9% Totals for Area of Interest 74.1 100.0% Rating Options —Corrosion of Steel (Snow Camp Solar, NC) Aggregation Method: Dominant Condition Component Percent Cutoff.- None Specified Tie -break Rule: Higher W 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 by aggregating 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. Depth to a Selected Soil Restrictive Layer: Lithic bedrock (Snow Camp Solar, NC) A "restrictive layer" is a nearly continuous layer that has one or more physical, chemical, or thermal properties that significantly impede the movement of water and air through the soil or that restrict roots or otherwise provide an unfavorable root environment. Examples are bedrock, cemented layers, dense layers, and frozen layers. This theme presents the depth to the user selected type of restrictive layer as described in for each map unit. If no restrictive layer is described in a map unit, it is represented by the "greater than 200" depth class. This attribute is actually recorded as three separate values in the database. A low value and a high value indicate the range of this attribute for the soil component. A "representative" value indicates the expected value of this attribute for the component. For this soil property, only the representative value is used. 27 In In 641700 35° 52' 0" N g 0 g r 35° 51' 31" N 641700 641800 641900 642000 642100 642200 642300 b Map Scale: 1:6,220 if printed on A landscape (11" x 8.5") sheet. Meters N 0 50 100 200 300 Feet 0 300 600 1200 1800 Map projection: Web Mercator Comer coordinates: WGS84 Edge tics: UTM Zone 17N WGS84 28 Custom Soil Resource Report Map —Depth to a Selected Soil Restrictive Layer: Lithic bedrock (Snow Camp Solar, NC) 641800 641900 642000 642100 642200 642300 642400 642500 642600 642700 642800 642900 643000 35° 52' 0" N r r g 0 r r 35° 51' 31" N 642400 642500 642600 642700 642800 642900 64300D v MAP LEGEND Area of Interest (AOI) 0 Area of Interest (AOI) Soils Soil Rating Polygons 0 0-25 0 25-50 0 50 - 100 0 100 - 150 0 150 - 200 0 > 200 0 Not rated or not available Soil Rating Lines ~ 0-25 r 0 25-50 Custom Soil Resource Report ❑ Not rated or not available Water Features Streams and Canals Transportation i--1-+ Rails ­0 Interstate Highways US Routes Major Roads Local Roads Background Aerial Photography MAP INFORMATION The soil surveys that comprise your AOI were mapped at 1:12,000. 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 . 50 - 100 projection, which preserves direction and shape but distorts . 100 -150 distance and area. A projection that preserves area, such as the Albers equal-area conic projection, should be used if more . 150 - 200 accurate calculations of distance or area are required. > 200 This product is generated from the USDA-NRCS certified data as A 0 Not rated or not available of the version date(s) listed below. Soil Rating Points 0 - 25 Soil Survey Area: Alamance County, North Carolina Survey Area Data: Version 20, Sep 3, 2021 25-50 ❑ 50 - 100 Soil map units are labeled (as space allows) for map scales 1:50,000 or larger. 100 - 150 ❑ 150 - 200 Date(s) aerial images were photographed: Jul 28, 2019—Jul 30, 2019 > 200 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. 29 Custom Soil Resource Report Table —Depth to a Selected Soil Restrictive Layer: Lithic bedrock (Snow Camp Solar, NC) Map unit symbol Map unit name Rating (centimeters) Acres in AOI Percent of AOI ChA Chewacla loam, 0 to 2 >200 1.6 2.1 % percent slopes, frequently flooded CnB2 Cullen clay loam, 2 to 6 >200 20.8 28.1 % percent slopes, moderately eroded CnC2 Cullen clay loam, 6 to 10 >200 1.6 2.1 % percent slopes, moderately eroded CnD2 Cullen clay loam, 10 to >200 0.0 0.0% 15 percent slopes, moderately eroded HnB Herndon silt loam, 2 to 6 >200 9.7 13.0% percent slopes HnC Herndon silt loam, 6 to >200 0.1 0.2% 10 percent slopes MaB Mandale-Secrest 198 39.0 52.6% complex, 2 to 6 percent slopes W Water >200 1.4 1.9% Totals for Area of Interest 74.1 100.0% Rating Options —Depth to a Selected Soil Restrictive Layer: Lithic bedrock (Snow Camp Solar, NC) Units of Measure: centimeters Restriction Kind: Lithic bedrock Aggregation Method: Dominant Component Component Percent Cutoff. None Specified Tie -break Rule: Lower Interpret Nulls as Zero: No Depth to a Selected Soil Restrictive Layer: Paralithic bedrock (Snow Camp Solar, NC) A "restrictive layer" is a nearly continuous layer that has one or more physical, chemical, or thermal properties that significantly impede the movement of water and air through the soil or that restrict roots or otherwise provide an unfavorable root environment. Examples are bedrock, cemented layers, dense layers, and frozen layers. 30 Custom Soil Resource Report This theme presents the depth to the user selected type of restrictive layer as described in for each map unit. If no restrictive layer is described in a map unit, it is represented by the "greater than 200" depth class. This attribute is actually recorded as three separate values in the database. A low value and a high value indicate the range of this attribute for the soil component. A "representative" value indicates the expected value of this attribute for the component. For this soil property, only the representative value is used. 31 In In 641700 35° 52' 0" N g 0 g r 35° 51' 31" N 641700 641800 641900 642000 642100 642200 642300 b Map Scale: 1:6,220 if printed on A landscape (11" x 8.5") sheet. Meters N 0 50 100 200 300 Feet 0 300 600 1200 1800 Map projection: Web Mercator Comer coordinates: WGS84 Edge tics: UTM Zone 17N WGS84 32 Custom Soil Resource Report Map —Depth to a Selected Soil Restrictive Layer: Paralithic bedrock (Snow Camp Solar, NC) 641800 641900 642000 642100 642200 642300 642400 642500 642600 642700 642800 642900 643000 35° 52' 0" N r r g 0 r r 35° 51' 31" N 642400 642500 642600 642700 642800 642900 64300D v MAP LEGEND Area of Interest (AOI) 0 Area of Interest (AOI) Soils Soil Rating Polygons 0 0-25 0 25-50 0 50 - 100 0 100 - 150 0 150 - 200 0 > 200 0 Not rated or not available Soil Rating Lines ~ 0-25 r 0 25-50 Custom Soil Resource Report ❑ Not rated or not available Water Features Streams and Canals Transportation i--1-+ Rails ­0 Interstate Highways US Routes Major Roads Local Roads Background Aerial Photography MAP INFORMATION The soil surveys that comprise your AOI were mapped at 1:12,000. 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 . 50 - 100 projection, which preserves direction and shape but distorts . 100 -150 distance and area. A projection that preserves area, such as the Albers equal-area conic projection, should be used if more . 150 - 200 accurate calculations of distance or area are required. > 200 This product is generated from the USDA-NRCS certified data as A 0 Not rated or not available of the version date(s) listed below. Soil Rating Points 0 - 25 Soil Survey Area: Alamance County, North Carolina Survey Area Data: Version 20, Sep 3, 2021 25-50 ❑ 50 - 100 Soil map units are labeled (as space allows) for map scales 1:50,000 or larger. 100 - 150 ❑ 150 - 200 Date(s) aerial images were photographed: Jul 28, 2019—Jul 30, 2019 > 200 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. 33 Custom Soil Resource Report Table —Depth to a Selected Soil Restrictive Layer: Paralithic bedrock (Snow Camp Solar, NC) Map unit symbol Map unit name Rating (centimeters) Acres in AOI Percent of AOI ChA Chewacla loam, 0 to 2 >200 1.6 2.1 % percent slopes, frequently flooded CnB2 Cullen clay loam, 2 to 6 >200 20.8 28.1 % percent slopes, moderately eroded CnC2 Cullen clay loam, 6 to 10 >200 1.6 2.1 % percent slopes, moderately eroded CnD2 Cullen clay loam, 10 to >200 0.0 0.0% 15 percent slopes, moderately eroded HnB Herndon silt loam, 2 to 6 >200 9.7 13.0% percent slopes HnC Herndon silt loam, 6 to >200 0.1 0.2% 10 percent slopes MaB Mandale-Secrest 163 39.0 52.6% complex, 2 to 6 percent slopes W Water >200 1.4 1.9% Totals for Area of Interest 74.1 100.0% Rating Options —Depth to a Selected Soil Restrictive Layer: Paralithic bedrock (Snow Camp Solar, NC) Units of Measure: centimeters Restriction Kind: Paralithic bedrock Aggregation Method: Dominant Component Component Percent Cutoff. None Specified Tie -break Rule: Lower Interpret Nulls as Zero: No Water Features Water Features include ponding frequency, flooding frequency, and depth to water table. 34 Custom Soil Resource Report Depth to Water Table (Snow Camp Solar, NC) "Water table" refers to a saturated zone in the soil. It occurs during specified months. Estimates of the upper limit are based mainly on observations of the water table at selected sites and on evidence of a saturated zone, namely grayish colors (redoximorphic features) in the soil. A saturated zone that lasts for less than a month is not considered a water table. This attribute is actually recorded as three separate values in the database. A low value and a high value indicate the range of this attribute for the soil component. A "representative" value indicates the expected value of this attribute for the component. For this soil property, only the representative value is used. 35 In In 641700 35° 52' 0" N g 0 g r 35° 51' 31" N 641700 641800 641900 642000 642100 642200 642300 b Map Scale: 1:6,220 if printed on A landscape (11" x 8.5") sheet. Meters N 0 50 100 200 300 Feet 0 300 600 1200 1800 Map projection: Web Mercator Comer coordinates: WGS84 Edge tics: UTM Zone 17N WGS84 36 Custom Soil Resource Report Map —Depth to Water Table (Snow Camp Solar, NC) 641800 641900 642000 642100 642200 642300 642400 642500 642600 642700 642800 642900 643000 35° 52' 0" N r r g 0 r r 35° 51' 31" N 642400 642500 642600 642700 642800 642900 64300D v MAP LEGEND Area of Interest (AOI) 0 Area of Interest (AOI) Soils Soil Rating Polygons 0 0-25 0 25-50 0 50 - 100 0 100 - 150 0 150 - 200 0 > 200 0 Not rated or not available Soil Rating Lines ~ 0-25 r 0 25-50 Custom Soil Resource Report ❑ Not rated or not available Water Features Streams and Canals Transportation i--1-+ Rails ­0 Interstate Highways US Routes Major Roads Local Roads Background Aerial Photography MAP INFORMATION The soil surveys that comprise your AOI were mapped at 1:12,000. 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 . 50 - 100 projection, which preserves direction and shape but distorts . 100 -150 distance and area. A projection that preserves area, such as the Albers equal-area conic projection, should be used if more . 150 - 200 accurate calculations of distance or area are required. > 200 This product is generated from the USDA-NRCS certified data as A 0 Not rated or not available of the version date(s) listed below. Soil Rating Points 0 - 25 Soil Survey Area: Alamance County, North Carolina Survey Area Data: Version 20, Sep 3, 2021 25-50 ❑ 50 - 100 Soil map units are labeled (as space allows) for map scales 1:50,000 or larger. 100 - 150 ❑ 150 - 200 Date(s) aerial images were photographed: Jul 28, 2019—Jul 30, 2019 > 200 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. 37 Custom Soil Resource Report Table —Depth to Water Table (Snow Camp Solar, NC) Map unit symbol Map unit name Rating (centimeters) Acres in AOI Percent of AOI ChA Chewacla loam, 0 to 2 38 1.6 2.1 % percent slopes, frequently flooded CnB2 Cullen clay loam, 2 to 6 >200 20.8 28.1 % percent slopes, moderately eroded CnC2 Cullen clay loam, 6 to 10 >200 1.6 2.1 % percent slopes, moderately eroded CnD2 Cullen clay loam, 10 to >200 0.0 0.0% 15 percent slopes, moderately eroded HnB Herndon silt loam, 2 to 6 >200 9.7 13.0% percent slopes HnC Herndon silt loam, 6 to >200 0.1 0.2% 10 percent slopes MaB Mandale-Secrest 46 39.0 52.6% complex, 2 to 6 percent slopes W Water >200 1.4 1.9% Totals for Area of Interest 74.1 100.0% 38 Custom Soil Resource Report Rating Options —Depth to Water Table (Snow Camp Solar, NC) Units of Measure: centimeters Aggregation Method: Dominant Component Component Percent Cutoff.- None Specified Tie -break Rule: Lower Interpret Nulls as Zero: No Beginning Month: January Ending Month: December 39