Fire First Due Areas of Loudoun County, VA (2011)
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, Virginia, Department of Fire, Rescue and Emergency Management
- Publication_Date: 20110630
- Publication_Time: 000000
- Title: Fire First Due Areas of Loudoun County, VA (2011)
- Geospatial_Data_Presentation_Form: vector digital data
- Online_Linkage: see distribution information
- Description:
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- Abstract:
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This feature class defines each fire company's first due area in Loudoun County. The first due area is the area for which a given fire company would have the first unit dispatched to respond to a 911 call.
- Purpose:
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This feature class defines the extent of each fire company's first due area.
- Supplemental_Information:
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Data are stored in the corporate ArcSDE Geodatabase as a polygon feature class. The coordinate system is Virginia State Plane (North), Zone 4501, datum NAD83 HARN (vertical datum, if applicable, NAVD88), US Survey foot units.
- 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: -78.006804
- East_Bounding_Coordinate: -77.286160
- North_Bounding_Coordinate: 39.355232
- South_Bounding_Coordinate: 38.814998
- Keywords:
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- Theme:
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- Theme_Keyword_Thesaurus: none; employee generated
- Theme_Keyword: Fire
- Theme_Keyword: Company
- Place:
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- Place_Keyword_Thesaurus: none; employee generated
- Place_Keyword: County
- Place_Keyword: Loudoun
- Place_Keyword: Virginia
- Theme:
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- Theme_Keyword_Thesaurus: ISO 19115 Topic Categories
- Theme_Keyword: society
- Theme_Keyword: health
- 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:
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Loudoun County, VA, Department of Fire, Rescue, & Emergency Management
- Contact_Address:
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- Address_Type: mailing and physical
- Address: 803 Sycolin Rd
- City: Leesburg
- State_or_Province: VA
- Postal_Code: 20175
- Country: US
- Contact_Voice_Telephone: (703)777-0333
- Contact_Facsimile_Telephone: (703)771-5359
- Hours_of_Service: 24 hours
- Native_Data_Set_Environment:
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Microsoft Windows Server 2008 Version 6.0 (Build 6002) Service Pack 2; ESRI ArcGIS 10.0.3.3600
- 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 coverage to geodatabase feature class coversion process was ensured by a 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
- Completeness_Report:
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Features may have been eliminated or generalized due to scale and intended use. To assist Loudoun County, Virginia in the maintenance of the data, please provide any information concerning discovered errors, omissions, or other discrepancies found in the data.
- 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 coverage to geodatabase feature class conversion process was ensured by a 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: Department of Fire, Rescue, and Emergency Management
- Publication_Date: 19880101
- Publication_Time: 000000
- Geospatial_Data_Presentation_Form: map
- Type_of_Source_Media: hardcopyPaper
- Source_Contribution: Fire and Rescue Chiefs agreed on due area boundaries.
- Process_Step:
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- Process_Description:
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The first due and box areas in this layer were developed in 1988 by agreement with Fire and Rescue Chiefs based on hand drawn maps.
- Process_Date: 19980105
- Process_Time: 000000
- Process_Contact:
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- Contact_Information:
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- Contact_Organization_Primary:
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- Contact_Organization: Department of Fire, Rescue, and Emergency Management
- Process_Step:
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- Process_Description:
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This data set was part of a batch process that converted legacy data from ArcInfo coverage in Librarian to a single-tiled ArcInfo coverage in preparation for a final coversion to ArcSDE Geodatabase Feature Classes. Data were extracted from Librarian using the EXTRACT TOPOLOGICAL command. Multi-tiled data sets were extracted into multiple coverages and then combined based on the feature type(s). Layers with both polygon and arc feature classes were processed with the Arc commands, MAPJOIN and DISSOLVE. Arc feature classes alone were processed with the Arc commands, APPEND and DISSOLVE. Layers with both arc and point feature classes and point feature classes alone were processed with the Arc command, APPEND. When used, the Arc command, DISSOLVE, was given with the <#all> option. All coverages were then reprojected to HARN 83 using the following .prj file specifications: INPUT PROJECTION STATEPLANE UNITS FEET ZONE 5551 DATUM NAD27 NADCON PARAMETERS OUTPUT PROJECTION STATEPLANE UNITS FEET FIPSZONE 4501 DATUM HPGN NADCON PARAMETERS END This dataset was then converted to a feature class in a geodatabase in ArcSDE.
- Process_Date: 20040126
- Process_Time: 000000
- Process_Contact:
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- Contact_Information:
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- Contact_Organization_Primary:
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- Contact_Organization: Department of Fire, Rescue, and Emergency Management
- Process_Step:
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- Process_Description:
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The fire company boundaries were redrawn after the creation of a new public safety layer called PSRESPONSE, which identifies both the appropriate Fire & EMS within a designated first due area.
The updated PSFIRE layer was generated by running a dissolve on the FDISTRICT_NAME attribute field in the PSRESPONSE layer. This resulted in only the individual fire companies' boundaries being shown in the updated layer. Any edits to this layer is done after edits are complete for the PSRESPONSE layer.
- Process_Date: 20081230
- Process_Time: 000000
- Process_Contact:
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- Contact_Information:
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- Contact_Organization_Primary:
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- Contact_Organization: Department of Fire, Rescue, and Emergency Management
- Contact_Position: Fire and Rescue Chiefs
- Process_Step:
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- Process_Description:
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Fire Due Areas' boundaries are potentially updated at any time throughout the year, as a result of the original "parent" PSRESPONSE layer being updated (daily for roads or bi-yearly for first due analysis) After the PSRESPONSE's boundaries are edited, the new PSFIRE layer is generated by following the same process in the 08' update. The DISSOLVE tool is used to dissolve fire boxes into larger areas.
- Process_Contact:
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- Contact_Information:
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- Contact_Organization_Primary:
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- Contact_Organization:
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Loudoun County, VA, Office of Mapping and Geographic Information (OMAGI)
- Contact_Position: GIS Systems Analyst
- Spatial_Data_Organization_Information:
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- Indirect_Spatial_Reference: Loudoun County
- 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: 28
- 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: NAD 1983 HARN StatePlane Virginia North FIPS 4501 Feet
- 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: 0.00020833333333333297
- Ordinate_Resolution: 0.00020833333333333297
- Planar_Distance_Units: Foot_US
- 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.PSFIRE_POLY
- 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: RS_FDISTRICT
- Attribute_Definition: Unique code to identify Fire Company responsible for due area
- Attribute_Definition_Source: Department of Fire, Rescue, and Emergency Management
- Attribute_Domain_Values:
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- Enumerated_Domain:
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- Enumerated_Domain_Value: See Overview Description for data dictionary of attribute
- Attribute:
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- Attribute_Label: RS_FDISTRICT_ABBREV
- Attribute_Definition: Abbrevation for Fire Company responsible for due area
- Attribute_Definition_Source: Department of Fire, Rescue, and Emergency Management
- Attribute_Domain_Values:
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- Unrepresentable_Domain: See Overview Description for data dictionary of attribute
- Attribute_Domain_Values:
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- Enumerated_Domain:
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- Enumerated_Domain_Value: See Overview Description for data dictionary of attribute
- Attribute:
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- Attribute_Label: RS_FDISTRICT_NAME
- Attribute_Definition: Name of Fire Company responsible for due area
- Attribute_Definition_Source: Department of Fire, Rescue, and Emergency Management
- Attribute_Domain_Values:
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- Enumerated_Domain:
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- Enumerated_Domain_Value:
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See Overview Description for RS_FDISTRICT_ABBREV for name values
- 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: DB2GSE.ST_Area(SHAPE)
- Attribute_Definition: Area of first due area in internal units
- Attribute_Definition_Source: Loudoun County
- Attribute_Domain_Values:
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- Unrepresentable_Domain: Positive whole number automatically geneated
- Attribute:
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- Attribute_Label: DB2GSE.SdeLength(SHAPE)
- Attribute_Definition: Loudoun County
- Attribute_Domain_Values:
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- Unrepresentable_Domain: Positive whole number automatically geneated
- Overview_Description:
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- Entity_and_Attribute_Overview:
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RS_FDISTRICT_ABBREV: Abbrevation for Fire Company responsible for due area
- Entity_and_Attribute_Detail_Citation:
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Abbrev Company
LB Leesburg
PV Purcellville
MB Middleburg
RH Round Hill
HM Hamilton
AB Ashburn
AL Aldie
PH Philomont
AR Arcola
LK Lucketts
SP Sterling Park
MF Moorefield
LV Lovettsville
NV Neersville
CS Cascades
DUL Dulles
SR South Riding
LD Lansdowne
CC Clarke County, VA
FQ Fauquier County, VA
FR Frederick County, MD
FX Fairfax County, VA
JEFF Jefferson County, WV
MONT Montgomery County, MD
PW Prince William County, VA
WASH Washington County, MD
- Overview_Description:
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- Entity_and_Attribute_Overview:
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RS_FDISTRICT: Unique code to identify Fire Company responsible for due area
- Entity_and_Attribute_Detail_Citation:
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Code Company
01 Leesburg
02 Purcellville
03 Middleburg
04 Round Hill
05 Hamilton
06 Ashburn
07 Aldie
08 Philomont
09 Arcola
10 Lucketts
11 Sterling Park
12 Lovettsville
16 Neersville
18 Cascades
DU Dulles
19 South Riding
20 Leesburg
21 Clarke County
22 Lansdowne
23 Moorefield
FQ Fauquier County, VA
FR Frederick County, MD
FX Fairfax County, VA
JEFF Jefferson County, WV
MONT Montgomery County, MD
PW Prince William County, VA
WASH Washington County, MD
- 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
- 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 databaase 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: 20120619
- 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: mailing and physical
- 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 Tue Jun 19 12:41:13 2012