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INTERPRETIVE GUIDE TO THE SOILS - Fauquier County

INTERPRETIVE GUIDE TO THE SOILS - Fauquier County

Table. Summary of Soil

Table. Summary of Soil Characteristics and Use Potential (**-- not part of official soil survey) MAP. UNIT SYMBOL SOIL NAME SLOPE 34D** Yellowbottom loam 15 – 25% 35B Penhook silt loam 3 – 8% 35C Penhook silt loam 8 - 15% 35D** Penhook silt loam 15 - 25% SOIL CHARACTERISTICS Very deep, well drained, yellowish-red clayey soils on sideslopes and dissected uplands; developed in residuum from sericite and biotite schists and gneiss Very deep, well drained, red clayey soils on summits and gently sloping backslopes in dissected uplands; developed in residuum from sericite schist, phyllonite, and phyllite Very deep, well drained, red clayey soils strongly sloping backslopes in dissected uplands; developed in residuum from sericite schist, phyllonite, and phyllite Very deep, well drained, red clayey soils moderately steep backslopes in dissected uplands; developed in residuum from sericite schist, phyllonite, and phyllite 36C3 SEE MAP UNIT 35C 38A** Very deep, moderately well drained, brownish-yellow loamy soils with intermittent Swampoodle loam high water tables on broad summits and slight depressions; shrink-swell clays may occur in 0 - 2% lower subsoil of some soil profiles; developed in local colluvium and residuum from granitic rocks; may have HYDRIC soil inclusions 38B Very deep, moderately well drained, mottled brownish-yellow and strong brown loamy soils Swampoodle loam with intermittent high water tables on broad summits and slight depressions; may have 2 - 7% shrink-swell clay in subsoil; developed in local colluvium and residuum from granitic rocks; may have HYDRIC soil inclusions EROSION HAZARD K Factor (surface/subsoil) HYDROLOGIC GROUP High 0.43, 0.28 B Moderate 0.43, 0.28 B Moderate 0.43, 0.28 B High 0.43, 0.28 B Slight 0.28, 0.28 B Moderate 0.28, 0.28 B USE POTENTIAL AND PROBLEMS FOR SELECTED USES GENERAL DEVELOPMENT USING CENTRAL WATER AND CENTRAL SEWER FAIR steep slopes Bearing Capacity: moderate Shrink-swell Potential: moderate GOOD Bearing Capacity: moderate Shrink-swell Potential: moderate GOOD Bearing Capacity: moderate Shrink-swell Potential: moderate FAIR steep slopes Bearing Capacity: moderate Shrink-swell Potential: moderate VERY POOR intermittent high water table; possible shink-swell clays Bearing Capacity: low Shrink-swell Potential: high VERY POOR intermittent high water table; possible shink-swell clays Bearing Capacity: low Shrink-swell Potential: high DEVELOPMENT USING CONVENTIONAL SEPTIC TANK AND DRAINFIELD MARGINAL percs slowly steep slopes MARGINAL percs slowly MARGINAL percs slowly MARGINAL percs slowly steep slopes POOR high water table POOR high water table AGRICULTURE PRIME PASTURE PRIME CROPLAND SECONDARY CROPLAND PRIME PASTURE SECONDARY CROPLAND SECONDARY CROPLAND FORESTRY (HARDWOOD) LOW MODERATELY LOW MODERATELY LOW MODERATELY LOW MODERATELY HIGH MODERATELY HIGH LAND USE CAPABILITY CLASS IIe IIIe IIe

Table. Summary of Soil Characteristics and Use Potential (**-- not part of official soil survey) MAP. UNIT SYMBOL SOIL NAME SLOPE 40B** Myersville silt loam 2 - 7% 40C Myersville silt loam 7 - 15% 40D Myersville silt loam, stony 15 - 25% 40E Pignut silt loam, stony 25 - 45 % 41B** Alanthus – Pignut complex; very stony 2 - 7 % 41C Alanthus – Pignut complex; very stony 7 - 15 % SOIL CHARACTERISTICS Deep, well drained, strong brown silty soils on summits and gently sloping backslopes; developed in residuum from greenstone and cloritic schist Deep, well drained, strong brown silty soils on summits and strongly sloping backslopes; developed in residuum from greenstone and cloritic schist Deep, well drained, strong brown silty soils on moderately steep backslopes; stones cover 0.02 – 0.1% of the soil surface; developed in residuum from greenstone and cloritic schist Moderately deep, well drained, strong brown silty soils on steep and very steep backslopes; with cobbles and stones ranging from .01 – 0.1% on the soil surface; developed in residuum from greenstone and cloritic schist Very deep, well drained, yellowish red silty soils (Alanthus) and moderately deep, well drained, strong brown silty soils (Pignut) on summits and gently sloping backslopes; surface cover is represented by .05 – 4% stones, 0 – 4% cobbles and 0 – 0.1% rock outcrop; developed in residuum from greenstone Very deep, well drained, yellowish red silty soils (Alanthus) and moderately deep, well drained, strong brown silty soils (Pignut) on strongly sloping backslopes; surface cover is represented by 0.1 – 3% stones, 0 – 3% cobbles and 0 – 0.01% rock outcrop; developed in residuum from greenstone EROSION HAZARD K Factor (surface/subsoil) HYDROLOGIC GROUP Moderate 0.32, 0.17 B High 0.32, 0.17 B High 0.32, 0.17 B/C Very high 0.32, 0.17 C Moderate 0.28, 0.17 C Moderate 0.28, 0.17 C USE POTENTIAL AND PROBLEMS FOR SELECTED USES GENERAL DEVELOPMENT USING CENTRAL WATER AND CENTRAL SEWER FAIR shallow to rock Bearing Capacity: moderate Shrink-swell Potential: low FAIR shallow to rock Bearing Capacity: moderate Shrink-swell Potential: low POOR steep slopes; shallow to rock Bearing Capacity: moderate Shrink-swell Potential: low VERY POOR very steep slopes; shallow to rock Bearing Capacity: moderate Shrink-swell Potential: low FAIR shallow to rock; stoniness Bearing Capacity: moderate Shrink-swell Potential: low FAIR shallow to rock; stoniness Bearing Capacity: moderate Shrink-swell Potential: low DEVELOPMENT USING CONVENTIONAL SEPTIC TANK AND DRAINFIELD MARGINAL Shallow to rock MARGINAL shallow to rock POOR steep slopes shallow to rock NOT SUITED steep slopes shallow to rock MARGINAL shallow to rock MARGINAL shallow to rock AGRICULTURE PRIME CROPLAND SECONDARY CROPLAND SECONDARY PASTURE FORESTRY (HARDWOOD) MODERATE MODERATE MODERATELY LOW NOT SUITED MODERATELY LOW SECONDARY PASTURE SECONDARY PASTURE MODERATE MODERATE LAND USE CAPABILITY CLASS IIIe VIs VIIe VIIs

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