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HomeMy WebLinkAboutSDP201800014 Study 2018-05-03Soils Report For Brookhill section 1, Block 4b, apartments -initial site plan- digital Tax Map ID: 04600000001900 Item Number: SDP201800014 Prepared: May 3, 2018 U," Thomas Jefferson Soil & Water Conservation District "To exercise leadership in promoting natural resource protection. " 706 Forest Street, Suite G Charlottesville, Virginia 22903 Phone: (434) 975-0224 --J�- z O O LL z IL 0 z /� V W J IL O w N V) Ltl am. �`p 16 O = N 7 p L) _ d 1A C r G E O j y := a !� r N N C y`p� to — U 7 N M`umi [E6 E N E conw L M cn CL Q cu . ¢7 or1 ? ID C co 61 y O N?� 'a Z T •01 d .-.. U E w-0 j O 0 (�] y 5 N43 w 5 O O Lam! N C O 0 T i O Gl N Ip 7' C,7 a)03 y �Op p p coC) O C Co E 7. y O en ti y ro +- O ci N r N N a N E D m _O 7 N �U 0 y -p m CO 67 y,Q ti G1 ty O. E m U N U} as o w V N m y E'A m 9 a� � Q � O N'8 a c n ?� U] w ac n i2 m m� N z5 EcdaL6iia 2'a cps c, °rnm id wO ? d `9 O QI w Q 7 m cd an �r m _p1 p ro A a o m �cn yv U 'y 7 O Qm N E N _ U N Etm _ UJ 0 C E =6 N N O O N C L �'O y W N N QO�•p L�� _O N r G� R co (j N i�OO E U Z; N O EL N u'l t T N f0 Q1 N .0 p O O 3� 1C O U) V L w.. r d C N E W '.- L O L n E v) U S L v Q m r p u) m m T ❑ .- F- o E w d 7 co w u W LL W U P• � O J W � � O O � HO N a _d a 6 Y m0 i W +- C 7 � m m P y t? co A d J d n' P P 4 W P O a CO m C�J y *� y y�• '.' U- P O 1a07 D �7. a a O 'a a C b [i toi m Id 4 m vl to 'p m [A C f.J C7 C'1 _i w w W 0 w 0 a. v � W - d {� 00 � +.,1 q� �*�pi Ip m p Oyu �fn o p C a w o m � On is o z0 Soil Map Albemarle County, Virginia Map Unit Legend dlap Unit Symbol gap Unit Name Acres In AOI Percent of AOI 16 Chewacla silt loam I 0.6 0.3%i �2713 Elioak loam, 2 to 7 percen — 38.2 18.2% slopes Ekoak loam, 7 to 15 percent 30.0 LI slopes III 27D EEli,#akloam. 15to25 percent f 1 0.5%;es I — -- 28i]3 —{--- - ----� Elloak day loam, 15 to 25 2.0 0.996 percent slopes, severely eroded 34B Glenelg loam, 2 to 7 percent 9.7 `4.6% slopes 34C Glenelg loam, 7 to 15 percent 37.01 17.7% slopes 34D Glenelg loam, 15 to 25 percent 40.4 19.3% , slopes 39D Hazel loam, 15 to 25 percent 31.4 15.0% slopes 39E Hazel loam, 25 to 45 percent 4.5 2.2% slopes 95 Wehadkee sift loam 14.2 6.8% 968 Worsham loam, 2 to 7 percent 0,5 0 2% slopes Totals for Area of Interest 209.7 100.0%', Brook Hill Natural Resources Web Soil Survey 5=018 Conservation Service National Cooperative Soil Survey Page 3 of 3 Map Unit Description (Brief, Generated) ---Albemarle County, Virginia Brook Hill Map Unit Description (Brief, Generated) The map units delineated on the detailed sail maps in a soil survey represent the soils or miscellaneous areas in the survey area. The map unit descriptions in this report, along with the maps, provide information on the composition of map units and properties of their components. 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. The Map Unit Description (Brief, Generated) report displays a generated description of the major soils that occur in a map unit. Descriptions of non -soil (miscellaneous areas) and minor map unit components are not included. This description is generated from the underlying soil attribute data. Additional information about the map units described in this report is available in other Soil Data Mart reports, which give properties of the soils and the limitations, capabilities, and potentials for many uses. Also, the narratives that accompany the Soil Data Mart reports define some of the properties included in the map unit descriptions. Report —Map Unit Description (Brief, Generated) Albemarle County, Virginia Map Unit: 16—Chewacla silt loam Component: Chewacla (85%) The Chewacla component makes up 85 percent of the map unit. Slopes are 0 to 2 percent. This component is on flood plains, river valleys. The parent material consists of residuum weathered from granite and gneiss. Depth to a root restrictive layer is greater than 60 inches. The natural drainage class is somewhat poorly drained. Water movement in the most restrictive layer is moderately high. Available water to a depth of 60 inches is high. Shrink -swell potential is low. This soil is occasionally flooded. It is not ponded. A seasonal zone of water saturation is at 12 inches during January, February, March, April, November, December. Organic matter content in the surface horizon is about 2 percent. Nonirrigated land capability classification is 3w. This soil does not meet hydric criteria. 1�SDt Natural Resources Web Soil Survey 5/WO18 +� Conservation Service National Cooperative Soil Survey Page 1 of 5 Map Unit Description (Brief, Generated) ---Albemarle County, Virginia Component: Wehadkee (3%) Generated brief soil descriptions are created for major components. The Wehadkee soil is a minor component. Map Unit: 2713—Elioak loam, 2 to 7 percent slopes Component: Elioak (80%) The Elioak component makes up 80 percent of the map unit. Slopes are 2 to 7 percent. This component is on hillslopes, piedmonts. The parent material consists of residuum weathered from mica schist. Depth to a root restrictive layer is greater than 60 inches. The natural drainage class is well drained. Water movement in the most restrictive layer is moderately high. Available water to a depth of 60 inches is moderate. Shrink -swell potential is low. This soil is not flooded. It is not ponded. There is no zone of water saturation within a depth of 72 inches. Organic matter content in the surface horizon is about 2 percent. Nonirrigated land capability classification is 2e. This soil does not meet hydric criteria. Map Unit: 27C—Elioak loam, 7 to 15 percent slopes Component: Elioak (80%) The Elioak component makes up 80 percent of the map unit. Slopes are 7 to 15 percent. This component is on hillslopes, piedmonts. The parent material consists of residuum weathered from mica schist. Depth to a root restrictive layer is greater than 60 inches. The natural drainage class is well drained. Water movement in the most restrictive layer is moderately high. Available water to a depth of 60 inches is moderate. Shrink -swell potential is low. This soil is not flooded. It is not ponded. There is no zone of water saturation within a depth of 72 inches. Organic matter content in the surface horizon is about 2 percent. Nonirrigated land capability classification is 3e. This soil does not meet hydric criteria. Map Unit: 27D--Elioak loam, 15 to 25 percent slopes Component: Elioak (80%) The Elioak component makes up 80 percent of the map unit. Slopes are 15 to 25 percent. This component is on hillslopes, piedmonts. The parent material consists of residuum weathered from mica schist. Depth to a root restrictive layer is greater than 60 inches. The natural drainage class is well drained. Water movement in the most restrictive layer is moderately high. Available water to a depth of 60 inches is moderate. Shrink -swell potential is low. This soil is not flooded. It is riot ponded. There is no zone of water saturation within a depth of 72 inches. Organic matter content in the surface horizon is about 2 percent. Nonirrigated land capability classification is 4e. This soil does not meet hydric criteria. uSDA Natural Resources :ram Conservation Service Web Soil Survey National Cooperative Soil Survey Brook Hill 5/31201 S Page 2 of 5 Map Unit Description (Brief, Generated) ---Albemarle County, Virginia Brook Hill Map Unit: 28D3—Elioak day loam, 15 to 25 percent slopes, severely eroded Component: Elioak (80%) The Elioak component makes up 80 percent of the map unit. Slopes are 15 to 25 percent. This component is on piedmonts, hillslopes. The parent material consists of residuum weathered from mica schist. Depth to a root restrictive layer is greater than 60 inches. The natural drainage class is well drained. Water movement in the most restrictive layer is moderately high. Available water to a depth of 60 inches is moderate. Shrink -swell potential is low. This soil is not flooded. It is not ponded. There is no zone of water saturation within a depth of 72 inches. Organic matter content in the surface horizon is about 2 percent. Nonirrigated land capability classification is 6e. This soil does not meet hydric criteria. Map Unit: 3413—Glenelg loam, 2 to 7 percent slopes Component: Glenelg (90%) The Glenelg component makes up 90 percent of the map unit. Slopes are 2 to 7 percent. This component is on hillslopes, piedmonts. The parent material consists of residuum weathered from mica schist. Depth to a root restrictive layer is greater than 60 inches. The natural drainage class is well drained. Water movement in the most restrictive layer is moderately high. Available water to a depth of 60 inches is high. Shrink -swell potential is low. This soil is not flooded. It is not ponded. There is no zone of water saturation within a depth of 72 inches. Organic matter content in the surface horizon is about 2 percent. Nonirrigated land capability classification is 2e. This soil does not meet hydric criteria. Map Unit: 34C—Glenelg loam, 7 to 15 percent slopes Component: Glenelg (85%) The Glenelg component makes up 85 percent of the map unit. Slopes are 7 to 15 Percent. This component is on hillslopes, piedmonts. The parent material consists of residuum weathered from mica schist. Depth to a root restrictive layer is greater than 60 inches. The natural drainage class is well drained. Water movement in the most restrictive layer is moderately high. Available water to a depth of 60 inches is high. Shrink -swell potential is low. This soil is not flooded. It is not ponded. There is no zone of water saturation within a depth of 72 inches. Organic matter content in the surface horizon is about 2 percent. Nonirrigated land capability classification is 3e. This soil does not meet hydric criteria. Map Unit: 34D—Glenelg loam, 15 to 25 percent slopes Component: Glenelg (90%) Natural Resources Web Soil Survey 51 ore Conservation Service National Cooperative Sail Survey Page 3 of 5 Map Unit Description (Brief, Generated) —Albemarle County, Virginia The Glenelg component makes up 90 percent of the map unit. Slopes are 15 to 25 percent. This component is on hillslopes on piedmonts. The parent material consists of residuum weathered from mica schist. Depth to a root restrictive layer is greater than 60 inches. The natural drainage class is well drained. Water movement in the most restrictive layer is moderately high. Available water to a depth of 60 inches (or restricted depth) is very high. Shrink -swell potential is low. This soil is not flooded. It is not ponded. There is no zone of water saturation within a depth of 72 inches. Organic matter content in the surface horizon is about 2 percent. Nonirrigated land capability classification is 4e. This soil does not meet hydric criteria. Map Unit: 39D—Hazel loam, 15 to 25 percent slopes Component: Hazel (80%) The Hazel component makes up 80 percent of the map unit. Slopes are 15 to 25 percent. This component is on piedmonts, hillslopes. The parent material consists of residuum weathered from graywacke sandstone and mica schist. Depth to a root restrictive layer, bedrock, lithic, is 20 to 40 inches. The natural drainage class is excessively drained. Water movement in the most restrictive layer is high. Available water to a depth of 60 inches is low. Shrink -swell potential is low. This soil is not flooded. It is not ponded. There is no zone of water saturation within a depth of 72 inches. Organic matter content in the surface horizon is about 1 percent. Nonirrigated land capability classification is 4e. This soil does not meet hydric criteria. Map Unit: 39E—Hazel loam, 25 to 45 percent slopes Component: Hazel (80%) The Hazel component makes up 80 percent of the map unit. Slopes are 2.5 to 45 percent. This component is on hillslopes, piedmonts. The parent material consists of residuum weathered from graywacke sandstone and mica schist. Depth to a root restrictive layer, bedrock, lithic, is 20 to 40 inches. The natural drainage class is excessively drained. Water movement in the most restrictive layer is high. Available water to a depth of 60 inches is low. Shrink -swell potential is low. This soil is not flooded. It is not ponded. There is no zone of water saturation within a depth of 72 inches. Organic matter content in the surface horizon is about 1 percent. Nonirrigated land capability classification is 7e. This soil does not meet hydric criteria. Map Unit: 95—Wehadkee silt loam Component: Wehadkee (80%) UvSpp, Natural Resources �i Conservation Service Web Soil surrey National Cooperative Soil Survey OW 5/3/2018 Page 4 of 5 Map Unit Description (Brief, Generated)—Albernarle County, llrginia The Wehadkee component makes up 80 percent of the map unit. Slopes are 0 to 2 percent. This component is on flood plains, river valleys. The parent material consists of alluvium derived from igneous rock. Depth to a root restrictive layer is greater than 60 inches. The natural drainage class is poorly drained. Water movement in the most restrictive layer is moderately high. Available water to a depth of 60 inches is high. Shrink -swell potential is low. This soil is occasionally flooded. It is not ponded. A seasonal zone of water saturation is at 15 inches during January, February, March, April, May, June, November, December. Organic matter content in the surface horizon is about 4 percent. Nonirrigated land capability classification is 4w. This soil meets hydric criteria. Map Unit: 96B—Worsham loam, 2 to 7 percent slopes Component: Worsham (75%) The Worsham component makes up 75 percent of the map unit. Slopes are 2 to 7 percent. This component is on uplands, drainageways. The parent material consists of colluvium derived from igneous rock. Depth to a root restrictive layer is greater than 60 inches. The natural drainage class is poorly drained. Water movement in the most restrictive layer is low. Available water to a depth of 60 inches is moderate. Shrink -swell potential is moderate. This soil is not flooded. It is not ponded. A seasonal zone of water saturation is at 6 inches during January, February, March, April, November, December. Organic matter content in the surface horizon is about 2 percent. Nonirrigated land capability classification is 4w. This soil meets hydric criteria. Data Source Information Soil Survey Area: Albemarle County, Virginia Survey Area Data: Version 11, Oct 11, 2017 Brook Hill USDA Natural Resources Web Soil Survey 5/312018 �� Conservallon Service National Cooperative Soil Survey Page 5 of 6 Dwellings and Small Commercial Buildings —Albemarle County, Virginia Dwellings and Small Commercial Buildings Soil properties influence the development of building sites, including the selection of the site, the design of the structure, construction, performance after construction, and maintenance. This table shows the degree and kind of soil limitations that affect dwellings and small commercial buildings. The ratings in the table are both verbal and numerical. Rating class terms indicate the extent to which the soils are limited by all of the soil features that affect building site development. Not limited indicates that the soil has features that are very favorable for the specified use. Good performance and very low maintenance can be expected. Somewhat limited indicates that the soil has features that are moderately favorable for the specified use. The limitations can be overcome or minimized by special planning, design, or installation. Fair performance and moderate maintenance can be expected. Very limited indicates that the soil has one or more features that are unfavorable for the specified use. The limitations generally cannot be overcome without major soil reclamation, special design, or expensive installation procedures. Poor performance and high maintenance can be expected. Numerical ratings in the table indicate the severity of individual limitations. The ratings are shown as decimal fractions ranging from 0.01 to 1.00. They indicate gradations between the point at which a soil feature has the greatest negative impact on the use (1.00) and the point at which the soil feature is not a limitation (0.00). Dwellings are single-family houses of three stories or less. For dwellings without basements, the foundation is assumed to consist of spread footings of reinforced concrete built on undisturbed soil at a depth of 2 feet or at the depth of maximum frost penetration, whichever is deeper. For dwellings with basements, the foundation is assumed to consist of spread footings of reinforced concrete built on undisturbed soil at a depth of about 7 feet. The ratings for dwellings are based on the soil properties that affect the capacity of the soil to support a load without movement and on the properties that affect excavation and construction costs. The properties that affect the load -supporting capacity include depth to a water table, ponding, flooding, subsidence, linear extensibility (shrink -swell potential), and compressibility. Compressibility is inferred from the Unified classification. The properties that affect the ease and amount of excavation include depth to a water table, ponding, flooding, slope, depth to bedrock or a cemented pan, hardness of bedrock or a cemented pan, and the amount and size of rock fragments. Brook Hill Natural Resources Web Soil Survey 5rMO18 Conservation Service National Cooperative Soil Survey Page 1 of 4 Dwellings and Small Commercial Buildings—Alberarle County, Virginia Brook Will Small commercial buildings are structures that are less than three stories high and do not have basements. The foundation is assumed to consist of spread footings of reinforced concrete built on undisturbed soil at a depth of 2 feet or at the depth of maximum frost penetration, whichever is deeper. The ratings are based on the soil properties that affect the capacity of the soil to support a load without movement and on the properties that affect excavation and construction costs. The properties that affect the load -supporting capacity include depth to a water table, ponding, flooding, subsidence, linear extensibility (shrink -swell potential), and compressibility (which is inferred from the Unified classification). The properties that affect the ease and amount of excavation include flooding, depth to a water table, ponding, slope, depth to bedrock or a cemented pan, hardness of bedrock or a cemented pan, and the amount and size of rock fragments. Information in this table is intended for land use planning, for evaluating land use alternatives, and for planning site investigations prior to design and construction. The information, however, has limitations. For example, estimates and other data generally apply only to that part of the soil between the surface and a depth of 5 to 7 feet. Because of the map scale, small areas of different soils may be included within the mapped areas of a specific soil. The information is not site specific and does not eliminate the need for onsite investigation of the soils or for testing and analysis by personnel experienced in the design and construction of engineering works. Government ordinances and regulations that restrict certain land uses or impose specific design criteria were not considered in preparing the information in this table. Local ordinances and regulations should be considered in planning, in site selection, and in design. Report —Dwellings and Small Commercial Buildings [Onsite investigation may be needed to validate the interpretations in this table and to confirm the identity of the soil on a given site. The numbers in the value columns range from 0.01 to 1.00. The larger the value, the greater the potential limitation. The table shows only the top five limitations for any given soil. The soil may have additional limitations] Dwellings and small Commercial Buildings —Albemarle County, Virginia Map symbol and soil Pet. of Dwellings without name map basements unit Rating class and Value limiting features 16-- Chnwacla silt loam Chewacla 85 Very limited Flooding 1.I10 1SM Natural Resources �i Conservation Service Depth to saturated zone Dwellings with basements I small commercial buildings Rating class and limiting features Very limited Flooding — - Depih to saturated lone ---...._. Web Soil Survey National Cooperative Soil Sunray Value Rating class and Value limiting features Very limited 1.00 flooding 1.00 1.00 Depth to saturated 1.00 /one 5/3/2018 Page 2 of 4 Dwellings and Small Commercial Buildings ---Albemarle County, Virginia Dwellings and Small Commercial Buildings —Albemarle County, Virginia Brook Hill Map symbol and soil Pet. of Dwellings without Dwellings with basements Small commercial buildings name map basements unit Rating class and Value Rating class and Value Rating class and Value limiting features limiting feature; limiting features 27B—Elicak loam, 2 to 7 percent slopes Elioak T �80 Not limited �— Not limited Somewhat limited Slope 0.14 27C—Elioak loam, 7 -- — -- — to 15 percent slopes Elioak 80 Somewhat limited Somewhat limited Very limited Slope 0.37 Slope 0.37 Slope 1.00 27D—Elioak loam, 15 to 25 percent slopes Elioak 80 Very limited Very limited Very limited Slope 1.00 Slope 1.00 Slope 1.00 28D3--Elioak clay loam, 15 to 25 percent slopes, severely eroded Elioak 80 Very limited Very limited Very limited Slope 1.00 Slope 1.00 Slope 1.00 34B—ienelg loam, 2 to 7 percent slopes Glenelg 90 Not limited Not limited Somewhat limited Slope 0.14 34C--Glenelg loam, 7 to 15 percent slopes Glenelg 85 Somewhat limited Somewhat limited Very limited Slope 0.37 Slope 0.37 Slope 1.00 34D--Glenelg loam, 15 to 25 percent slopes Glenelg 90 Very limited Very limited Very limited Slope 1.00 Slope 1.00 Slope 1.00 39D---lazel loam, 15 to 25 percent slopes Hazel 80 Very limited Very limited Very limited Slope 1.00 Slope 1.00 Slope � 1.00 Depth to hard bedrock ' 0.46 Depth to hard bedrock , 1.00 Depth to hard bedrock 0.46 WA Natural Resources Web Soil Survey 6=018 i Conservation Service National Cooperative Soil Survey Page 3 of 4 Dwellings and Small Commercial Buildings ---Albemarle County, Virginia Dwellings and Small Commercial Buildings -Albemarle County, Virginia Map symbol and soft Pct of Dwellings without Dwellings with basements Small commercial buildings name map basements -- unit - - - Rating class and Value Rating class and - Value Value Rating class and limiting features limiting features limiting features 39E—Hazel loam, 26 to 45 percent slopes 80 Very limited 1.00 Vary limited Hazel Very limited Slope 1.00 Slope Depth to hard bedrock Slope Depth to hard bedrock 1.00 Depth to hard bedrock 0.46 1.00 - - 0.46 95--Wehadkee silt — --- loam Wehadkee go Very limited Very limited Flooding Very limited Flooding Flooding 1.00 1.00 1.00 Depth to saturated 1.00 Depth to saturated 1.00 Depth to saturated 1.00 zone zone zone: 96H—Worsham loam, - - 2 to 7 percent slopes 75 Very limited Depth to saturated rune 1.00 Worsham Very limited Depth to saturated zone Very limited Depth to saturated zone 1.00 1.00 - Shrink-swr l 0.50 Shrink -swell - - 0.50 Shrink -swell 0.50 o.14 -�— - - Slope Data Source Information Soil Survey Area: Albemarle County, Virginia Survey Area Data: Version 11, Oct 11, 2017 Brook Ilfll ttSDp Natural Resources Web Soil Survey 5/3/2018 �i Conservation Service National Cooperative Soil Survey Page 4 of 4 Roads and Streets, Shallow Excavations, and Lawns and Landscaping —Albemarle County, Brook HillVirginia Roads and Streets, Shallow Excavations, and Lawns and Landscaping Soil properties influence the development of building sites, including the selection of the site, the design of the structure, construction, performance after construction, and maintenance. This table shows the degree and kind of soil limitations that affect local roads and streets, shallow excavations, and lawns and landscaping. The ratings in the table are both verbal and numerical. Rating class terms indicate the extent to which the soils are limited by all of the soil features that affect building site development. Not limited indicates that the soil has features that are very favorable for the specified use. Good performance and very low maintenance can be expected. Somewhat limited indicates that the soil has features that are moderately favorable for the specified use. The limitations can be overcome or minimized by special planning, design, or installation. Fair performance and moderate maintenance can be expected. Very limited indicates that the soil has one or more features that are unfavorable for the specified use. The limitations generally cannot be overcome without major soil reclamation, special design, or expensive installation procedures. Poor performance and high maintenance can be expected. Numerical ratings in the table indicate the severity of individual limitations. The ratings are shown as decimal fractions ranging from 0.01 to 1.00. They indicate gradations between the point at which a soil feature has the greatest negative impact on the use (1.00) and the point at which the soil feature is not a limitation (0.00). Local roads and streets have an all-weather surface and cant' automobile and light truck traffic all year. They have a subgrade of cut or fill soil material; a base of gravel, crushed rock, or soil material stabilized by lime or cement; and a surface of flexible material (asphalt), rigid material (concrete), or gravel with a binder. The ratings are based on the soil properties that affect the ease of excavation and grading and the trafFio-supporting capacity. The properties that affect the ease of excavation and grading are depth to bedrock or a cemented pan, hardness of bedrock or a cemented pan, depth to a water table, ponding, flooding, the amount of large stones, and slope. The properties that affect the traffic -supporting capacity are soil strength (as inferred from the AAS»TO group index number), subsidence, linear extensibility (shrink -swell potential), the potential for frost action, depth to a water table, and ponding. Shallow excavations are trenches or holes dug to a maximum depth of 5 or 6 feet for graves, utility lines, open ditches, or other purposes. The ratings are based on the soil properties that influence the ease of digging and the resistance to sloughing. Depth to bedrock or a cemented pan, hardness of bedrock or a cemented pan, the amount of large stones, and dense layers influence the ease of digging, filling, and compacting. Depth to the seasonal high water table, flooding, and ponding may restrict the period when excavations can be made. Slope influences the ease of using machinery. Soil texture, depth to the water table, and linear extensibility (shrink -swell potential) influence the resistance to sloughing. Natural Resources Web Soil Survey 502018 Conservation Service National Cooperative Soil Survey Page 1 of 5 Roads and Streets, Shallow Excavations, and I awns and Landscaping ---Albemarle County, Virginia Lawns and landscaping require soils on which turf and ornamental trees and shrubs can be established and maintained. Irrigation is not considered in the ratings. The ratings are based on the soil properties that affect plant growth and trafficability after vegetation is established. The properties that affect plant growth are reaction; depth to a water table; ponding; depth to bedrock or a cemented pan; the available water capacity in the upper 40 inches; the content of salts, sodium, or calcium carbonate; and sulfidic materials. The properties that affect trafficability are flooding, depth to a water table, ponding, slope, stoniness, and the amount of sand, clay, or organic matter in the surface layer. Information in this table is intended for land use planning, for evaluating land use alternatives, and for planning site investigations prior to design and construction. The information, however, has limitations. For example, estimates and other data generally apply only to that part of the soil between the surface and a depth of 5 to 7 feet. Because of the map scale, small areas of different soils may be included within the mapped areas of a specific soil. The information is not site specific and does not eliminate the need for onsite investigation of the soils or for testing and analysis by personnel experienced in the design and construction of engineering works. Government ordinances and regulations that restrict certain land uses or impose specific design criteria were not considered in preparing the information in this table. Local ordinances and regulations should be considered in planning, in site selection, and in design. Report --Roads and Streets, Shallow Excavations, and Lawns and Landscaping [Onsite investigation may be needed to validate the interpretations in this table and to confirm the identity of the soil on a given site. The numbers in the value columns range from 0.01 to 1.00. The larger the value, the greater the potential limitation. 'The table shows only the top five limitations for any given soil. The soil may have additional limitations] Roads and Streets, Shallow Excavations, and Lawns and Landscaping—Atbemarle County, Virginia Map symbol and soil PcL of Lawns and landscaping Local reads and streets Shallow excavations name map unit __..-. Rating class and Value Rating class and Value Rating class and value limiting features limiting features limiting features 1 &- Gilewacla silt loam - 85 Somewhat limited — Very limited Very limited - - Chewacla 0.99 1.00 Depth to saturated Flooding Depth to saturated 1.00 zone lone Flooding I_ow exchange 1. ow strength Flooding 0.80 0.08 0.50 1.00 _ 0.50 Depth to saturated 0.99 Dusty rapacity zone Fsty 0.08 unstable excavation 0,01 walls USDA Natural Resources Conservation Service Web Soil Survey Nationai Cooperative Soil Survey Brook Hill 5/3/2018 Page 2of5 Roads and Streets, Shallow Excavations, and Lawns and Landscaping ---Albemarle County, Virginia Roads and Streets, Shallow Excavations, and Lawns and Landscaping -Albemarle County, Virginia Map symbol and soil name 27B---Elioak loam, 2 to 7 percent slopes Elioak Pct. of map unit i 80 Lawns and landscaping Rating class and limiting features Somewhat limited Low exchange capacity Value _ 0.75 Local roads and streets Rating class and limiting features Somewhat limited Low strength 9 Value 0.99 Shallow excavations Rating class and Value limiting features Somewhat iimited�� Too clayey 0.13 Too clayey T D.50 Frost action 0.50 Dusty 0.08 Dusty 0.08 Unstable excavation 0.01 walls 27C Elloak loam, 7 to 15 percent slopes Elioak 80 Somewhat limed Somewhat limited Somewhat limited Low exchange 0.75 Low strength T 0.99 Slope 0.37 capacity Too clayey 0.50 Frost action 0.50 Too clayey 0.13 Slope 0.37 Slope 0.37 Dusty 0.08 Dusty 0.08 Unstable excavation 0.01 walls 27D-Elioak loam, 15 to 25 percent slopes Elioak 80 Very limited Very limited Very limited Slope 1.00 Slope 1.00 Slope 1.00 Low exchange 0.75 Low strength 0.99 Too clayey 0.13 capacity Too clayey 0.50 Frost action 0.50 Dusty 0.08 Dusty 0.08 Unstable excavation 0.01 walls 28133--Hioak clay - loam, 15 to 25 percent slopes, severely eroded Elloak 80 Very limited Very limited Very limited Slope 1.00 Slope 1.00 Slope 1.00 Low exchange 0.75 Low strength 0.99 Too clayey 0.13 capacity Too clayey 0.50 Frost action 0.50 Dusty 0.08 Dusty 0.08 Unstable excavation 0.01 walls Droughty 0.01 Brook Hill USDA Natural Resources Web Soil Survey 513/2018 200 Conservation Service National Cooperative Soil Surrey Page 3 of 5 Roads and Streets, S:iallow Excavations, and Lawns and Landscaping --- fbemade County, Virginia Roads and Streets, Shallow Excavations, and Lawns and Landscaping -Albemarle County, Virginia Map symbol and soil Pct. of Lawns and landscaping Local roads and streets Shallow excavations name map unit Rating class and Value Rating class and Value Rating class and Value limiting features limiting features limiting features 34E1,- -Glenelg loam, 2 to 'l percent slopes Glenelg Somewhat limited 90 Somewhat limited Somewhat limited 0.07 t ow exchange capacity 0.75 Low strength 0.99 Dusty Dusty 0.07 Frost action 0.50 Unstable excavation 0.01 walls 34Cr-Glenelg loam, 7 to 15 percent slopes Glenelq 85 Somewhat limited Somewhat limited Sornewhal limited - - - -- low exchange 0.99 0.37 - - 0.75 1 ow strength Slope rapacity Slope 0,37 Frost action 0.50 Dusty 0.07 Dusty 0.07 Slope 0.37 Unstable: excavation 0.01 walls 34l}-Glc:nelg loam, 15 to 25 percent slopes Very limited Glenelg 90 Very limited Very limited Slope: 1.00 Slope 1.00 Slope 1.00 I ow exchange 1.00 Frost action Dusty 0.04 0.50 capacity 0.01 Dusty 0.04 Unstable excavation walls 391)---Hazel loans, 15 to 25 percent slopes Hazel 80 Very limited Very limited Very limited Slope - - Slope �- - 1.00 Depth to hard bedrock 1.00 1.00 0.75 Low exchange Frost action 0.50 Slope 1.00 capacity 0.04 Depth to bedrock 0.4{i Depth to hard bedrock 0.46 Dusty 0.04 0.01 Dusty Unstable excavation - J walls Brook Bill usDA Natural Resources Web Soil Survey 5131201 S edict Conservation Service National Cooperative Soil Survey Page 4 of 5 Roads and Streets, Shallow Excavations, and Lawns and Landscaping --Albemarle County, Virginia Roads and Streets, Shallow Excavations, and Lawns and Landscaping --Albemarle County, Virginia Map symbol and soil PCt. of Lawns and landscaping Local roads and streets Shallow excavations name map unit Rating class and Value Rating class and Value Rating class and Value limiting features limiting features limiting features 39E---4-lazel loam, 25 to 45 percent slopes Hazel - 80 Very limited Very limited_ Very limited Slope 1.00 Slope 1.00 Depth to hard bedrock .00 Low exchange 0.75 Frost action -T � 0.50 Slope 1.00 capacity Depth to bedrock 0.46 Depth to hard bedrock 0.46 Dusty 0.04 Dusty 0.04 T Unstable excavation 0.01 walls 95---Wehadkee silt loam Wehadkee 80 Somewhat limited Very limited Very limited Depth to saturated 0.94 Flooding 1.00 Depth to saturated 1.00 zone zone Flooding _ 0.60 Low strength 1.00 Flooding 0.60 Law exchange 0.50 Depth to saturated 0.9E Dusty 0.08 capacity zone Dusty 0.08 Unstable excavation 0.01 walls 9BB-Worsham loam, 2to 7 percent slopes Worsham 75 Very limited Very limited Very limited Depth to saturated I 1.00 Depth to saturated 1.00 Depth to saturated 1.00 zone I zone zone Low exchange capacity 0.75 Low strength 1.00 Dusty 0.05 Dusty 0.05 Shrink -swell 0.50 Too clayey 0.03 Unstable excavation 0.01 walls Data Source information Soil Survey Area: Albemarle County, Virginia Survey Area Data: Version 11, Oct 11, 2017 Brook Hill Natural Resources Web Soil Surrey 5/3/2018 Conservation Service National Cooperative Soil Survey Page 5 of 5 Soil Features ---Albemarle County, Virginia Brook Hill Soil Features This table gives estimates of various soil features. The estimates are used in land use planning that involves engineering considerations. 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. The table indicates the hardness and thickness of the restrictive layer, both of which significantly affect the ease of excavation. Depth to top is the vertical distance from the soil surface to the upper boundary of the restrictive layer. Subsidence is the settlement of organic soils or of saturated mineral soils of very low density. Subsidence generally results from either desiccation and shrinkage, or oxidation of organic material, or both, following drainage. Subsidence takes place gradually, usually over a period of several years. The table shows the expected initial subsidence, which usually is a result of drainage, and total subsidence, which results from a combination of factors. Potential for frost action is the likelihood of upward or lateral expansion of the soil caused by the formation of segregated ice lenses (frost heave) and the subsequent collapse of the soil and loss of strength on thawing. Frost action occurs when moisture moves into the freezing zone of the soil. Temperature, texture, density, saturated hydraulic conductivity (Ksat), content of organic matter, and depth to the water table are the most important factors considered in evaluating the potential for frost action. It is assumed that the soil is not insulated by vegetation or snaw and is not artificially drained. Silty and highly structured, clayey soils that have a high water table in winter are the most susceptible to frost action. Well drained, very gravelly, or very sandy soils are the least susceptible. Frost heave and low soil strength during thawing cause damage to pavements and other rigid structures. Risk of corrosion pertains to potential soil -induced electrochemical or chemical action that corrodes or weakens uncoated steel or concrete. 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. The rate of corrosion of concrete is based mainly on the sulfate and sodium content, texture, moisture content, and acidity 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 or concrete in installations that intersect soil boundaries or soil layers is more susceptible to corrosion than the steel or concrete in installations that are entirely within one kind of soil or within one soil layer. For uncoated steel, the risk of corrosion, expressed as low, moderate, or high, is based on soil drainage Gass, total acidity, electrical resistivity near field capacity, and electrical conductivity of the saturation extract. For concrete, the risk of corrosion also is expressed as low, moderate, or high. It is based on soil texture, acidity, and amount of sulfates in the saturation extract. Natural Resources Web Soil Survey 5/3/2018 Conservation Service National Cooperative Soil Survey Page 1 of 4 m .G e 5 U N d a N m 0 LL 0 o 0 � I o gal s o 0 0 all Y d d o 0 0 0 0 Y O o y n 71 a N o d 0 G7 0 d � a Z M g z o o I I I I I I in m J CC3 W —41 t CL �s a, ca °� I I I I I I Y I + i m d� A q� Y i3 N fOdl Y Gl O� W �[ Q O N W 'LS d N d p1 f� N O NP O N to N VJ W C Q7 d N 01 CL �o I` d ��o a d fsC Y o W Imo a ��a' a �� U NN W Ur.y N W U=• m N W n0am N Il! Oa m "' C7 N N d tm M I1 m z •r,l CO W 'c 21 y C p U Q L W E LL N S6 d O cn I O ULo p p o 41 0 � I a a m a� j a a I I p I JG L k W ,0+ N ti y y $ G1 01 i G7 d g I c o f z o Iz fi � I I � o � c 93E E L a Jm fY.f � Y C I N N I oCD a Y U U i J � R,n�o • u7 O_ ! N w E 10 ` N l ` y E ID CC p .p.. I 'aa N CL I 0)L 0.2 W p '.. i U V T E G G1 N N = p C m L i Y � O N E t !� p 0 � C d = I !f, � N Hl � G I � � O O. }oN 7 m V N d m a a Su .9 7 C 0 U N co a s co LL a U) W 0o v 0 0 N �. LO m Physical Soil Properties—Albernarle County, llrginia Brook Hill Physical Soil Properties This table gives estimates of various soil features. The estimates are used in land use planning that involves engineering considerations. 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. The table indicates the hardness and thickness of the restrictive layer, both of which significantly affect the ease of excavation. Depth to top is the vertical distance from the soil surface to the upper boundary of the restrictive layer. Subsidence is the settlement of organic soils or of saturated mineral soils of very low density. Subsidence generally results from either desiccation and shrinkage, or oxidation of organic material, or both, following drainage. Subsidence takes place gradually, usually over a period of several years. The table shows the expected initial subsidence, which usually is a result of drainage, and total subsidence, which results from a combination of factors. Potential for frost action is the likelihood of upward or lateral expansion of the soil caused by the formation of segregated ice lenses (frost heave) and the subsequent collapse of the soil and loss of strength on thawing. Frost action occurs when moisture moves into the freezing zone of the soil. Temperature, texture, density, saturated hydraulic conductivity (Ksat), content of organic matter, and depth to the water table are the most important factors considered in evaluating the potential for frost action. It is assumed that the soil is not insulated by vegetation or snow and is not artificially drained. Silty and highly structured, clayey soils that have a high water table in winter are the most susceptible to frost action. Well drained, very gravelly, or very sandy soils are the least susceptible. Frost heave and low soil strength during thawing cause damage to pavements and other rigid structures. Risk of corrosion pertains to potential soil -induced electrochemical or chemical action that corrodes or weakens uncoated steel or concrete. 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. The rate of corrosion of concrete is based mainly on the sulfate and sodium content, texture, moisture content, and acidity 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 or concrete in installations that intersect soil boundaries or soil layers is more susceptible to corrosion than the steel or concrete in installations that are entirely within one kind of soil or within one soil layer. For uncoated steel, the risk of corrosion, expressed as low, moderate, or high, is based on soil drainage class, total acidity, electrical resistivity near field capacity, and electrical conductivity of the saturation extract. For concrete, the risk of corrosion also is expressed as low, moderate, or high. 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