| snippet:
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Last Publication Date: 03/15/2026 : 17:56 |
| summary:
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Last Publication Date: 03/15/2026 : 17:56 |
| extent:
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[[-84.1198292408313,34.1540512255183],[-75.629720153957,36.5975123025878]] |
| accessInformation:
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NCDOT GIS Unit |
| thumbnail:
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thumbnail/thumbnail.png |
| maxScale:
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1.7976931348623157E308 |
| typeKeywords:
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["Data","Service","Map Service","ArcGIS Server"] |
| description:
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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
Latest Publication Date: 03/15/2026 : 17:45 |
| licenseInfo:
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|
| catalogPath:
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|
| title:
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NCDOT_HazardousSpillBasinBoundary |
| type:
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Map Service |
| url:
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|
| tags:
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["NC","North Carolina","NCDOT","ESM"] |
| culture:
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en-US |
| name:
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NCDOT_HazardousSpillBasinBoundary |
| guid:
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3DF71C08-A88C-420F-AEDF-16FD42888C79 |
| minScale:
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0 |
| spatialReference:
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NAD_1983_StatePlane_North_Carolina_FIPS_3200_Feet |