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HomeMy WebLinkAboutZMA196800007 Other UNITED STATES DEPARTMENT OF AGRICULTURE SOIL CONSERVATION SERVICE Post Office Box 238 Charlottesville, Virginia 22902 May 31, 1968 Albemarle County Planning Commission County Office Building Charlottesville, Virginia Attn: Mr. John Humphreys, Secretary Dear Sirs: Enclosed are copies of the soil survey of the proposed "Auburri"Hill Subdivision, in Albemarle County, which you requested. Also enclosed are descriptions of the soil map- ping units on this property, with ratings as to their suit- ability for various uses related to subdivisions. We trust that this information will be helpful to you. If you have questions concerning this material I shall be glad to try to answer them. Yours very truly, Earl H. Brunger Soil Scientist Soil Conservation Service cc: G. B. Wayland G. T. Munkittrick R. 0. Anderson C. J. Koch INTERPRETATION OF SOILS MAPPED ON "AUBURN HILL", ALBEMARLE COUNTY, VIRGINIA Soil Conservation Service 54B3-- -DAVIDSON Clay, gently sloping, severely eroded (2 to 7% slopes), is a deep, dark red, well drained soil that occurs on upland ridgetops. It has formed from weathered products of Catoctin greenstone. This is a dark red, firm clay soil ranging from 36" to 50" thick. It is underlain by yellowish weathered greenstone, grading to hard, green, unweathered rock at depths of several feet. Permeability is moderately rapid to rapid. It is medium acid and medium to high in natural fertility. Suitability for Non - Agricultural Use: This is one of the best soils for non - agricultural uses. It is well suited to homesites and good for sewage disposal fields, basements, and lawns and landscaping. It is fair for roads and streets, and playgrounds. Ponds and lagoons will probably leak. 54C3---DAVIDSON clay, sloping, severely eroded (7 to 15% slopes), is a deep, dark red, well drained soil that occurs on sloping ridge - tops and sideslopes. It has formed from weathered products of Catoctin greenstone. This is a dark red, firm clay soil ranging from 32" to 48" thick. It is underlain by yellowish weathered greenstone, grading to hard, green, unweathered rock. Permeability is moderately rapid to rapid. This soil is medium acid and medium to high in natural fertility. Suitability for Non - Agricultural Use: This soil has only moder- ate limitations for sewage disposal fields, basements, roads and • streets, and lawns and landscaping. Ponds and lagoons will probably leak. 54D3-- -DAVIDSON clay, moderately steep, severely eroded (15 to 25% slopes), is a dark red, well drained soil that occurs on hill- sides. It has formed from weathered products of Catoctin green - stone. -2 - 540---DAVIDSON clay (continued) This is a dark red, firm clay soil, ranging from 20" to 42" thick. It is underlain by yellowish weathered greenstone, grading to hard, green, unweathered rock. In some places the hard rock comes to the surface in the form of rock out- crops. Some severe gullying has taken place on this soil. Permeability is moderately rapid to rapid. This soil is medium acid, and moderately high in natural fertility. Suitability for Non - Agricultural Use: Steep slopes and soils shallow to hard rock impose severe limitations on use for sewage absorption fields, and problems in its use for home - sites, basement excavation, and road building. Ponds will probably leak. 55B2---TATUM silt loam, gently sloping, eroded (2 to '' slopes), is a moderately deep, well drained soil that occurs on ridge - tops. It is formed from the weathering of fine grained seri- cite schist or phyllite. The surface soil is very friable, yellowish brown silt loam about 6" thick. The subsoil is red, friable to firm silty clay about 25" thick. The substratum is mingled red, yellow and brown, friable soil material containing schist rock frag- ments becoming fairly hard at 48 to 55" below the surface. This soil is very strongly acid, and low in natural fertility. Permeability of the surface soil is moderately rapid and of the subsoil is moderate. Suitability_ for Non - Agricultural Use: This is a good soil for homesites. It is fairly well suited for absorption fields for sewage disposal. It is fairly good for fill material, roads and streets, and lawns and landscaping. It is general- ly good for ponds and lagoons. 58B1-- -NASON silt loam, gently sloping (2 to 7% slopes), is a moder- ately deep, well drained soil that occurs on ridgetops. It is formed from the weathering of fine grained sericite schist or phyllite. — 3 - 58B1---NASON silt loam (continued) The surface soil is very friable grayish brown to yellowish brown silt loam 8" to 10" thick. The subsoil is yellowish red to strong brown silty clay loam 16" to 26" thick. The sub- stratum is mingled red, yellow, and brown friable soil materi- el grading into harder schist rock at 25" to 4.0" below the sur- face. This soil is extremely acid and low in natural fertility. per- meability is rapid in the surface and moderate in the subsoil. Suitability for Non - Agricultural Use: This soil is fair for homesites. It has moderate limitations for sewage disposal fields, excavation of basements, lawns and landscaping, and roads and streets. It is generally good for ponds and lagoons. 58B2-- -NASON silt loam, gently sloping, eroded (2 to 7% slopes) is identical to the 58B1 described above except for a thinner sur- face soil averaging 3" to 5" in thickness. 58C2---NASON silt loam, sloping, eroded (7 to 15% slopes), is a moder- ately deep, well drained soil located on the sideslopes of ridges adjacent to drainageways. The surface soil is friable grayish brown to yellowish brown silt loam 3" to 5" thick. The subsoil is yellowish red to strong brown silty clay loam. The substratum is mingled red, yellow and brown friable silt loam soil material grading into harder schist rock at 22" to 38" below the surface. This soil is extremely acid and low in natural fertility. Per- meability is moderately rapid in the surface soil and moderate in the subsoil. Suitability for Non - Agricultural Use: This soil has moderate limitations for sewage disposal fields. Excavation for base- ments may run into moderately hard rock. It is fair for lawns and landscaping, and roads and streets. It is generally good for ponds and lagoons. - 59B1---MANTEO shaly silt loam, gently sloping (2 to '7% slopes), is a shallow, well drained to excessively drained soil that occurs on ridges and sideslopes. The surface soil is grayish brown to yellowish brown shaly silt loam 5" to 8" thick. The substratum under the topsoil consists mainly of sericite schist which becomes hard to bore with an orchard auger or to chip with a spade at depths rang- ing from 15" to 25" below the surface. This unit includes areas which have as much as 8 to 10 inches of subsoil and are deeper to rock. This soil is very strongly acid and very low in natural fer- tility. Suitability for Non - Agricultural Use: This soil has severe limitations for sewage disposal fields. While the underlying rock is porous, hard rock is sometimes too close to sur- face to permit practical installation of a septic system. The poorest area of the 59B1 lies just north of Highway 732 where there is a ridge of outcropping sandstone. The best area of 59B1 is the large area in the southeast corner of the property where there are some deeper soils mixed in with the i Shallowness to rock also limits ease of excavation for base- ments and grading for roads and streets. It is fair for ponds. 5901--- MANTEO shaly silt loam, sloping (7 to 15% slopes), is a shallow excessively drained soil that occurs on sideslopes between rid- ges and drainageways. The surface soil is grayish brown to yellowish brown shaly silt loam 4" to 7" thick. Immediately under the topsoil is sericite schist rock which becomes hard to bore with an orchard auger at depths ranging from 8" to 21" below the surface. This soil is very strongly acid and very low in natural fer- tility. Suitability for Non Agricultural Use: This soil has severe limitations for sewage disposal fields. While the underlying rock is porous, hard rock may be too close to the surface to permit practical installation of a septic system. - 5 - 59D1--- MANTEO shaly silt loam, moderately steep (15 to 25% slopes), is a shallow, shaly, excessively drained soil that occurs on hillsides. The surface soil is grayish brown to yellowish brown shaly silt loam 3" to 6" thick. The topsoil has a high content of schist fragments, and is underlain by sericite schist which generally becomes hard within a few inches. This soil is very strongly acid and very low in natural fer- tility. Suitability for Non - Agricultural Use: Steep slopes and shaly soil shallow to rock make this unit unsuitable for homesites. 59E1--- MANTEO shaly silt loam, steep (25 to 45% slopes), is a shallow, shaly, excessively drained soil on steep hillsides. The surface soil is grayish brown to yellowish brown shaly silt loam shallow over sericite schist. This soil is extremely acid and very low in natural fertility. Suitability for Non - Agricultural Use: Steep slopes and shallow, shaly soil make this unit unsuitable for development.