Name: Hazardous Spill Basin Boundary

Display Field: SOURCEID

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: NCDOT is required to include Hazardous Spill Basins on projects based upon the guidelines. The basic requirements for the Basins are the following: Applicable Locations Basins will be provided at stream crossings on highways functionally classified as a rural or urban arterials and, 1. The stream (1) is identified as an Outstanding Resource Water (ORW) or a WS-I watersupply, or 2. The stream (1) crossing is within 1/2 mile of the critical area (2) of a water supply source classified as WS-II, WS-III and WS-IV. (1) For the purpose of these guidelines "stream" will be defined as those depicted as blue lines on 7-1/2 minute (1:24000 scale) United States Geological Survey (USGS) quadrangles. (2) Critical area is defined as extending 1/2 mile from the normal pool elevation of a reservoir; or 1/2 mile upstream of , and draining to an intake. This would make the effective area for hazardous spill basins placement, within 1.0 mile of the normal pool or upstream of an intake. To Develop a HSB coverages that identifies the potential need for an HSB, the following data sources are identified as needed: HYAR (24K Hydrography Line - Classified) HYARUT (24K Hydrography Line - Unnamed Trib) HYPL (24K Hydrography PolyLine - Classified) HYPLUT (24K Hydrography PolyLine - Unnamed) HQORWDWQ (Includes ORW and WS_I and WS_II WSW) WSW (Water Supply Watersheds) SWI (Surface Water Intakes) This data set contains all HSB Boundaries

Copyright Text: NCDOT

Default Visibility: true

MaxRecordCount: 1000

Supported Query Formats: JSON, geoJSON, PBF

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Extent:

XMin: 495442.09165994823
YMin: 184766.15196676552
XMax: 2989922.0479031056
YMax: 1036435.9967279434
Spatial Reference: 102719  (2264)

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Advanced Query Capabilities:

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Type ID Field: null

Fields:

• OBJECTID_1 ( type: esriFieldTypeOID, alias: OBJECTID_1 )
• FID_CRITIC ( type: esriFieldTypeDouble, alias: FID_CRITIC )
• SOURCEID ( type: esriFieldTypeString, alias: SOURCEID, length: 15 )
• FID_CONDIT ( type: esriFieldTypeDouble, alias: FID_CONDIT )
• SOURCEID_1 ( type: esriFieldTypeString, alias: SOURCEID_1, length: 10 )
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• FID_C ( type: esriFieldTypeDouble, alias: FID_C )
• OBJECTID ( type: esriFieldTypeDouble, alias: OBJECTID )
• NCDOT_DBO_ ( type: esriFieldTypeDouble, alias: NCDOT_DBO_ )
• PERIMETER ( type: esriFieldTypeDouble, alias: PERIMETER )
• WSW_ ( type: esriFieldTypeDouble, alias: WSW_ )
• WSW_ID ( type: esriFieldTypeDouble, alias: WSW_ID )
• CLASS_1 ( type: esriFieldTypeString, alias: CLASS_1, length: 15 )
• RIVER_BASI ( type: esriFieldTypeString, alias: RIVER_BASI, length: 20 )
• STREAM_NAM ( type: esriFieldTypeString, alias: STREAM_NAM, length: 45 )
• CL_DATE ( type: esriFieldTypeString, alias: CL_DATE, length: 10 )
• PCA_TYPE ( type: esriFieldTypeString, alias: PCA_TYPE, length: 2 )
• ACRES ( type: esriFieldTypeDouble, alias: ACRES )
• WSWID ( type: esriFieldTypeString, alias: WSWID, length: 10 )
• Shape ( type: esriFieldTypeGeometry, alias: Shape )
• Shape.STArea() ( type: esriFieldTypeDouble, alias: Shape.STArea() )
• Shape.STLength() ( type: esriFieldTypeDouble, alias: Shape.STLength() )

Supported Operations:   Query   Query Attachments   Query Analytic   Generate Renderer   Return Updates

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