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HomeMy WebLinkAboutSW4240602_Soils/Geotechnical Report_20241121 Custom Soil Resource Report Soil Map 3 N o n n N N 548880 548920 548960 549000 549040 5490E0 519120 549160 549'Z00 549240 549280 35°59'32"N „q 35°59'32"N � g AB sing t 4 - r D I� �I I 35°59'23"N M 35°59'23"N 548880 54892D 548960 549000 549040 11. 54912D 191160 549200 541 549280 3 3 Map Scale:1:2,010 if printed on A landscape(11"x 8.5")sheet. N Meters N N 0 25 50 100 150 n Feet 0 50 100 200 300 Map projection:Web Mercator Comer coordinates:WGS84 Edge tics:L TM Zone 17N WGS84 6 Custom Soil Resource Report Map Unit Legend Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI RB Jackland loam, 1 to 6 percent 1.6 11.4% slopes TmD Tomlin loam, 15 to 25 percent 0.6 4.3% slopes ToB2 Tomlin clay loam,2 to 8 percent 9.1 66.4% slopes,moderately eroded ToC2 Tomlin clay loam,8 to 15 2.5 17.9% percent slopes, moderately eroded Totals for Area of Interest 13.7 100.0% 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 was impractical to make enough observations to identify all the soils and miscellaneous areas on the landscape. 8 Custom Soil Resource Report 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. 9 Custom Soil Resource Report Davie County, North Carolina AB—Jackland loam, 1 to 6 percent slopes Map Unit Setting National map unit symbol: 2mcy3 Elevation: 200 to 1,400 feet Mean annual precipitation: 40 to 48 inches Mean annual air temperature: 50 to 59 degrees F Frost-free period: 160 to 190 days Farmland classification: Farmland of statewide importance Map Unit Composition Jackland and similar soils: 85 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Jackland Setting Landform: I nterfluves Landform position (two-dimensional): Summit Landform position (three-dimensional): Interfluve Down-slope shape: Linear Across-slope shape: Linear Parent material: Residuum weathered from diorite and/or gabbro and/or diabase and/or gneiss Typical profile A -0 to 6 inches: loam Bt- 6 to 24 inches: clay BC- 24 to 28 inches: clay loam C- 28 to 80 inches: loam Properties and qualities Slope: 2 to 6 percent Depth to restrictive feature: More than 80 inches Drainage class: Somewhat poorly drained Runoff class: Very high Capacity of the most limiting layer to transmit water(Ksat): Moderately low to moderately high (0.06 to 0.20 in/hr) Depth to water table:About 12 to 24 inches Frequency of flooding: None Frequency of ponding: None Available water supply, 0 to 60 inches: High (about 10.6 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 2e Hydrologic Soil Group: C/D Ecological site: F136XY21 OVA- Mesic temperature regime, basic upland woodland, expansive clay, seasonally wet and dry Hydric soil rating: No 10 Custom Soil Resource Report TmD—Tomlin loam, 15 to 25 percent slopes Map Unit Setting National map unit symbol: 2mcxm Elevation: 200 to 1,400 feet Mean annual precipitation: 37 to 60 inches Mean annual air temperature: 50 to 59 degrees F Frost-free period: 160 to 190 days Farmland classification: Not prime farmland Map Unit Composition Tomlin and similar soils:90 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Tomlin Setting Landform: Hillslopes on ridges Landform position (two-dimensional): Backslope Landform position (three-dimensional): Side slope Down-slope shape: Linear Across-slope shape: Convex Parent material: Saprolite derived from diorite and/or gabbro and/or diabase and/or gneiss Typical profile Apt - 0 to 4 inches: loam Ap2-4 to 8 inches: clay loam Bt1 -8 to 30 inches: clay Bt2-30 to 37 inches: silty clay Bt3-37 to 49 inches: silty clay loam BCt- 49 to 57 inches: silt loam C-57 to 81 inches: loam Properties and qualities Slope: 15 to 25 percent Depth to restrictive feature: More than 80 inches Drainage class:Well drained Runoff class: High 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 Sodium adsorption ratio, maximum: 1.0 Available water supply, 0 to 60 inches: Moderate (about 8.2 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 4e Hydrologic Soil Group: B 11 Custom Soil Resource Report Ecological site: F136XY320VA- Mesic temperature regime, acidic upland forest, moist Hydric soil rating: No ToB2—Tomlin clay loam, 2 to 8 percent slopes, moderately eroded Map Unit Setting National map unit symbol: 2mcxn Elevation: 200 to 1,400 feet Mean annual precipitation: 37 to 60 inches Mean annual air temperature: 50 to 59 degrees F Frost-free period: 160 to 190 days Farmland classification: All areas are prime farmland Map Unit Composition Tomlin, moderately eroded, and similar soils: 95 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Tomlin, Moderately Eroded Setting Landform: I nterfluves Landform position (two-dimensional): Summit Landform position (three-dimensional): Interfluve Down-slope shape: Convex Across-slope shape: Convex Parent material: Saprolite derived from diorite and/or gabbro and/or diabase and/or gneiss Typical profile Ap -0 to 10 inches: clay loam Bt- 10 to 40 inches: silty clay BC-40 to 58 inches: clay loam CB -58 to 80 inches: loam Properties and qualities Slope: 2 to 8 percent Depth to restrictive feature: More than 80 inches Drainage class:Well drained Runoff class: Medium 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 Sodium adsorption ratio, maximum: 1.0 Available water supply, 0 to 60 inches: Moderate (about 8.2 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 2e Hydrologic Soil Group: B 12 Custom Soil Resource Report Ecological site: F136XY320VA- Mesic temperature regime, acidic upland forest, moist Hydric soil rating: No ToC2—Tomlin clay loam, 8 to 15 percent slopes, moderately eroded Map Unit Setting National map unit symbol: 2mcxp Elevation: 200 to 1,400 feet Mean annual precipitation: 37 to 60 inches Mean annual air temperature: 50 to 59 degrees F Frost-free period: 160 to 190 days Farmland classification: Farmland of statewide importance Map Unit Composition Tomlin, moderately eroded, and similar soils: 90 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Tomlin, Moderately Eroded Setting Landform: Hillslopes on ridges Landform position (two-dimensional): Backslope Landform position (three-dimensional): Side slope Down-slope shape: Linear Across-slope shape: Convex Parent material: Saprolite derived from diorite and/or gabbro and/or diabase and/or gneiss Typical profile Ap -0 to 10 inches: clay loam Bt- 10 to 40 inches: silty clay BC-40 to 58 inches: clay loam CB -58 to 80 inches: loam Properties and qualities Slope: 8 to 15 percent Depth to restrictive feature: More than 80 inches Drainage class:Well drained Runoff class: Medium 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 Sodium adsorption ratio, maximum: 1.0 Available water supply, 0 to 60 inches: Moderate (about 8.2 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 3e Hydrologic Soil Group: B 13 Custom Soil Resource Report Ecological site: F136XY320VA- Mesic temperature regime, acidic upland forest, moist Hydric soil rating: No 14