Metrorail Service Districts of Loudoun County, VA
Metadata also available as
Metadata:
- Identification_Information:
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- Citation:
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- Citation_Information:
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- Originator:
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Loudoun County, VA, Office of Mapping and Geographic Information (OMAGI)
- Originator: Loudoun County, VA, Department of Planning, Demographer
- Publication_Date: 20130430
- Title: Metrorail Service Districts of Loudoun County, VA
- Geospatial_Data_Presentation_Form: vector digital data
- Description:
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- Abstract:
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At the July 3, 2012 Loudoun Board of Supervisor's Business Meeting, the Board agreed to be a funding partner with the Metropolitan Washington Airports Authority (MWAA) and Fairfax County for the Phase II extension of Metrorail to Dulles Airport and Ashburn. Loudoun County’s rail service districts were established on December 5, 2012 to fund the construction and maintenance of the stations, rail line, and rail related facilities and services. All parcels in the districts, residential and commercial, have a special property tax rate for funding of the rail. Tax collection for the districts is for Tax Year 2013 and future years. At the time the districts were established, the districts encompassed primarily commercial land. Only a few existing residential units were included within these districts at the time the districts were establishedThe boundaries of the Metrorail Service District were defined using physical features such as major roads and streams within two miles of stations. In some cases, parcel boundaries were used to develop this boundary. The Route 606/Airport and Route 772 station service districts were defined using parcel boundaries following approximate half-mile radii around the four proposed rail stations in or near Loudoun County: 1) Route 772, 2) Route 606, 3) Dulles Airport, and 4) Route 28. In cases where a parcel followed a road right of way and the road was used as a boundary of the Metrorail Service District, then the road right of way was used in place of the road centerline to draw the Metrorail Service District boundary. This allowed for station district boundaries to be coincident with the Metrorail Service District boundary.**The features the boundaries follow may have been generalized due to scale and intended use.**
- Purpose:
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This layer identifies the locations of the three metrorail service districts in Louodun County, VA.
- Status:
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- Progress: Complete
- Maintenance_and_Update_Frequency: As needed
- Spatial_Domain:
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- Bounding_Coordinates:
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- West_Bounding_Coordinate: -77.520272
- East_Bounding_Coordinate: -77.407952
- North_Bounding_Coordinate: 39.017895
- South_Bounding_Coordinate: 38.918216
- Keywords:
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- Theme:
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- Theme_Keyword_Thesaurus: none; Employee generated
- Theme_Keyword: Metrorail, Service District,Tax District
- Theme:
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- Theme_Keyword_Thesaurus: ISO 19115 Topic Categories
- Theme_Keyword: transportation
- Place:
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- Place_Keyword_Thesaurus: none; Employee generated
- Place_Keyword: Loudoun
- Place_Keyword: County
- Place_Keyword: Virginia
- Access_Constraints: None
- Use_Constraints:
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These data were generated for use by Loudoun County and are available to the public. These data are intended for use at 1:2400 scale or smaller. Acknowledgement of Loudoun County would be appreciated in products derived from this data.
- Point_of_Contact:
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- Contact_Information:
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- Contact_Organization_Primary:
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- Contact_Organization: Loudoun County, VA, OMAGI
- Contact_Position: Public Information Counter
- Contact_Address:
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- Address_Type: mailing and physical
- Address: 1 Harrison Street SE, 2nd floor
- Address: MS 65
- City: Leesburg
- State_or_Province: VA
- Postal_Code: 20175
- Country: US
- Contact_Voice_Telephone: (703)771-5778
- Contact_Facsimile_Telephone: (703)771-5075
- Contact_Electronic_Mail_Address: mapping@loudoun.gov
- Hours_of_Service: 8:00-4:30 EST, M-F
- Native_Data_Set_Environment:
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Microsoft Windows Server 2008 Version 6.0 (Build 6002) Service Pack 2; ESRI ArcGIS 10.0.5.4400
- Data_Quality_Information:
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- Attribute_Accuracy:
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- Attribute_Accuracy_Report:
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Retention of attribute accuracy throughout the personal geodatabase or shapefile to ArcSDE geodatabase feature class conversion process was ensured by a manual or automatic QA/QC programmatic check. To meet satisfactory QA/QC requirements the input coverage and output feature class must have, on a record by record basis, identical attribution when comparing all concatenated fields to all the user-defined attribution.
- Logical_Consistency_Report: Topologically clean
- Positional_Accuracy:
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- Horizontal_Positional_Accuracy:
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- Horizontal_Positional_Accuracy_Report:
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Retention of coordinate accuracy throughout the personal geodatabase or shapefile to ArcSDE geodatabase feature class conversion process was ensured by a manual or automatic QA/QC programmatic check. To meet satisfactory QA/QC requirements the input coverage and output feature class must have the same record total, and on a record by record basis, area, perimeter, and length differential of less than +/- 0.5%.
- Lineage:
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- Source_Information:
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- Source_Citation:
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- Citation_Information:
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- Originator: MWAA
- Title: Latest projected Metrorail stations
- Type_of_Source_Media: None
- Source_Citation_Abbreviation: Latest projected Metrorail stations
- Source_Contribution:
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Latest projected Metrorail stations provided to OMAGI in April 2012 for proposed District development
- Process_Step:
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- Process_Description:
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County staff developed the proposed alternate tax district boundaries based on the proposal of Loudoun County Board of Supervisor's member Shawn William (Broad Run District), using physical features such as major roads and streams near these boundary buffers.
- Process_Date: 20120615
- Process_Time: 120000
- Process_Contact:
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- Contact_Information:
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- Contact_Organization_Primary:
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- Contact_Organization: Loudoun County, VA, OMAGI
- Contact_Position: GIS Specialist
- Process_Step:
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- Process_Description:
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As of July 3rd, the station district boundaries were to be defined using half-mile radii forming circles around the proposed rail stations as an approximate guideline. Subsequent to the July 3rd Business Meeting, staff reviewed the parcels within or nearly a half-mile from the stations. Staff recommends establishing the boundaries as shown. Staff also recommends consolidating the Airport and Route 606 station development districts. The primary reason for combining these station districts is to ensure that the 606 Rail Station – which sits on airport property – is physically located within the 606 station development district. In addition, these station districts have overlapping areas and are adjacent to each other. Therefore, staff has combined the Airport and 606 Station districts and named it the Route 606/Airport Station Service District. The Station District was also adjusted to include other parcels that are owned by Dulles Airport per instruction by Loudoun County staff.
- Process_Date: 20120912
- Process_Step:
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- Process_Description:
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Both of the individual Station Districts & individual Metrorail Tax District were combined into a single GIS layer for inclusion in OMAGI's standard GIS database. All boundaries remained unchanged and attributes were added to the layer to differentiate between the overall Metrorail Tax District & individual Station Districts.
- Process_Date: 20120928
- Process_Step:
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- Process_Description:
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The Metrorail Service District boundary was updated to solely follow parcel boundaries.
- Process_Date: 20130422
- Spatial_Data_Organization_Information:
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- Direct_Spatial_Reference_Method: Vector
- Point_and_Vector_Object_Information:
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- SDTS_Terms_Description:
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- SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains
- Point_and_Vector_Object_Count: 3
- Spatial_Reference_Information:
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- Horizontal_Coordinate_System_Definition:
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- Planar:
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- Map_Projection:
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- Map_Projection_Name: Lambert Conformal Conic
- Lambert_Conformal_Conic:
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- Standard_Parallel: 38.03333333333333
- Standard_Parallel: 39.2
- Longitude_of_Central_Meridian: -78.5
- Latitude_of_Projection_Origin: 37.66666666666666
- False_Easting: 11482916.66666666
- False_Northing: 6561666.666666666
- Planar_Coordinate_Information:
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- Planar_Coordinate_Encoding_Method: coordinate pair
- Coordinate_Representation:
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- Abscissa_Resolution: 0.00000002708842039567117
- Ordinate_Resolution: 0.00000002708842039567117
- Planar_Distance_Units:
- Geodetic_Model:
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- Horizontal_Datum_Name: D North American 1983 HARN
- Ellipsoid_Name: GRS 1980
- Semi-major_Axis: 6378137.0
- Denominator_of_Flattening_Ratio: 298.257222101
- Entity_and_Attribute_Information:
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- Detailed_Description:
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- Entity_Type:
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- Entity_Type_Label: GISDBB.GISBROW.METRORAIL_DISTRICTS_POLY
- Attribute:
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- Attribute_Label: Shape
- Attribute_Definition: Feature geometry.
- Attribute_Definition_Source: ESRI
- Attribute_Domain_Values:
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- Unrepresentable_Domain: Coordinates defining the features.
- Attribute:
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- Attribute_Label: OBJECTID
- Attribute_Definition: Internal feature number.
- Attribute_Definition_Source: ESRI
- Attribute_Domain_Values:
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- Unrepresentable_Domain:
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Sequential unique whole numbers that are automatically generated.
- Attribute:
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- Attribute_Label: DB2GSE.SdeLength(SHAPE)
- Attribute_Definition: Perimeter of feature in internal units
- Attribute_Definition_Source: Loudoun County
- Attribute_Domain_Values:
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- Unrepresentable_Domain: Positive whole number automatically generated
- Attribute:
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- Attribute_Label: DB2GSE.ST_Area(SHAPE)
- Attribute_Definition: Area of District in internal units
- Attribute_Definition_Source: Loudoun County
- Attribute_Domain_Values:
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- Unrepresentable_Domain: Positive whole number automatically generated
- Attribute:
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- Attribute_Label: MD_NAME
- Attribute_Definition: The proposed name of the Metrorail service district
- Attribute_Definition_Source: Loudoun County
- Attribute_Domain_Values:
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- Unrepresentable_Domain: User generated text
- Attribute:
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- Attribute_Label: MD_TYPE_CD
- Attribute_Definition: Code representing the type of Metrorail service district
- Attribute_Domain_Values:
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- Enumerated_Domain:
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- Enumerated_Domain_Value: ST
- Enumerated_Domain_Value_Definition: Metrorail Station Service District
- Enumerated_Domain_Value_Definition_Source: Loudoun County
- Enumerated_Domain:
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- Enumerated_Domain_Value: SD
- Enumerated_Domain_Value_Definition: Metrorail Service District
- Enumerated_Domain_Value_Definition_Source: Loudoun County
- Attribute:
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- Attribute_Label: MD_UPD_SOURCE
- Attribute_Definition: Source that created or modified feature class
- Attribute_Definition_Source: Loudoun County
- Attribute:
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- Attribute_Label: MD_UPD_USER
- Attribute_Definition:
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Not for public distribution. Internal User ID of editor creating or modifying a feature
- Attribute:
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- Attribute_Label: MD_UPD_DATE
- Attribute_Definition: Date that feature class was updated
- Attribute_Definition_Source: Loudoun County
- Beginning_Date_of_Attribute_Values: 20121001
- Overview_Description:
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- Entity_and_Attribute_Overview: MD_UPD_SOURCE: Source that created or edited feature class
- Entity_and_Attribute_Detail_Citation:
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Code Description
1 Legacy (pre 2002)
2 County
3 Contract
- Distribution_Information:
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- Distributor:
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- Contact_Information:
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- Contact_Organization_Primary:
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- Contact_Organization: Loudoun County, VA, OMAGI
- Contact_Position: Public Information Counter
- Contact_Address:
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- Address_Type: mailing and physical
- Address: MS 65
- Address: 1 Harrison Street S.E., 2nd floor
- City: Leesburg
- State_or_Province: VA
- Postal_Code: 20175
- Country: US
- Contact_Voice_Telephone: (703)771-5778
- Contact_Facsimile_Telephone: (703)771-5075
- Contact_Electronic_Mail_Address: mapping@loudoun.gov
- Hours_of_Service: 8:00-4:30 EST, M-F
- Distribution_Liability: See access and use constraints information.
- Standard_Order_Process:
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- Digital_Form:
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- Digital_Transfer_Information:
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- Format_Name: DXF
- Format_Specification: AutoCad Digital Exchange File
- Format_Name: GDB
- Format_Specification: ESRI Geodatabase Feature Class
- Format_Name: SHP
- Format_Specification: ESRI Shapefile
- Digital_Transfer_Option:
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- Offline_Option:
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- Offline_Media: dvd
- Fees:
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Loudoun County distributes spatial data in ArcGIS database or shapefile & DXF format for the cost of reproduction. Countywide spatial datasets may be purchased for $$22 per DVD for up to 4.5 GB of data. There is a $100 surcharge to purchase countywide topography, and a $3 charge if the item is to be mailed. If the customer wants the data in DXF format and/or would like OMAGI to custom select specific geographic areas of the County, there is an additional $7 per 15 minute increment labor charge. Select aerial imagery is also available.
- Ordering_Instructions:
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Size limit: 4.5 GB. Visit our website at: <http://www.loudoun.gov/omagi>, click on "Loudoun County Mapping Documents & Order Forms." The "Forms" directory will lead you to custom & standard (countywide) data order forms. Hardcopy maps may also be available; please contact the Mapping Office Public Information Counter for more information regarding all data requests.
- Metadata_Reference_Information:
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- Metadata_Date: 20130515
- Metadata_Contact:
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- Contact_Information:
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- Contact_Organization_Primary:
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- Contact_Organization: Loudoun County, VA, OMAGI
- Contact_Position: Metadata Specialist
- Contact_Address:
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- Address_Type: unknown
- Address: MS 65
- Address: 1 Harrison Street SE, 2nd Floor
- City: Leesburg
- State_or_Province: VA
- Postal_Code: 20175
- Country: US
- Contact_Voice_Telephone: (703)771-5778
- Contact_Facsimile_Telephone: (703)771-5075
- Contact_Electronic_Mail_Address: mapping@loudoun.gov
- Hours_of_Service: 8:00-4:30 EST, M-F
- Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata
- Metadata_Standard_Version: FGDC-STD-001-1998
- Metadata_Time_Convention: local time
- Metadata_Use_Constraints:
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This metadata reflects the source Geodatabase format and specific elements may not apply if your data is exported to SHP or DXF products. User must be aware that changes to data schema occur during data export that may not be reflected in this metadata, which represents Loudoun County's corporate geodatabase. Acknowledgement of Loudoun County would be appreciated in the use of this metadata.
Generated by mp version 2.9.6 on Wed May 15 17:34:15 2013