The North Carolina Department of Environment, Health, and Natural Resources, Divison of Waste Management, Superfund Section in cooperation with the North Carolina Center for Geographic Information and Analysis developed the GIS data set, Hazardous Substance Disposal Sites, to enhance planning, siting, and impact analysis in areas directly affected by Hazardous Substance Disposal Sites. The arc and polygon data identifies locations of uncontrolled and unregulated, hazardous waste sites (formerly called superfund sites) in North Carolina.The file includes sites on the CERCLA Information System (CERCLIS), the National Priorities List, the State Inactive Hazardous Sites List, the Sites Priority List, and some Department of Defense sites. Attributes describe the state or federal status, facility name, coordinate location, and site id numbers. .
This data was created to assist governmental agencies and others in making resource management decisions through use of a Geographic Information System (GIS).
>system filename: hsds file size = 0.7 mb > >Revisions and updates to this layer include: >4.) filename: hsds1298 The December 1998 update to this layer >consisted of projecting the data from NAD27 datum, State Plane >projection, units of measure feet TO: NAD83 DATUM, State Plane >PROJECTION, UNITS OF MEASURE METERS. This was done to comply >with the NC Geographic Information Coordinating Council's >"Statement of Direction for North Carolina Corporate Geographic >Database Horizontal Reference, Datum and Unit of Measure". >This reprojecting was done in various ways depending on the data >type and content. Vector data was projected using the 'project' >command in ESRI's Arc software and topology was cleaned and >built based on coverage needs. Raster data was projected using >ESRI's Grid module and various steps as applicable. > >3.) filename: hsds396 The March 29, 1996 revisions consisted >of changing the name of the data layer from Superfund Sites, to >Hazardous Substance Disposal Sites. This was done at the request >of the custodian agency. >ALL FILES PRIOR TO THE MARCH 29, 1996 VERSION WERE NAMED >SUPERFUND SITES. (SUPFND, OR NC.SUPFND) > >2.) filename: hsds395 (previously named nc.supfnd695) >On June 21, 1995, the New Hanover County >landfill was moved approximately .5 mile south of the original >digitized location. The 1:24,000-scale Carolina Beach 7.5 Minute >series topographic map was affected. Coordinate information in >the PAT was altered. > >1.) filename: hsds395 (previously named nc.supfnd) >March 1995 was the original release date for this file.
Data creation and revision dates
Acknowledgement of products derived form this data set should cite the following: The source of the Hazardous Substance Disposal Sites data is the North Carolina Corporate Geographic Database. Earlier versions of this dataset may exist. The user must be sure to use the appropriate data set for the time period of interest. While efforts have been made to ensure that these data are accurate and reliable within the state of the art, CGIA cannot assume liability for any damages or misrepresentation caused by any inaccuracies in the data or as a result of changes to the data caused by system transfers.
401 Oberlin Road, Suite 150
Preferred contact is by mail or telephone.
>Div. of Waste Management Director, William L. Meyer >Superfund Section staff, Grover Nicholson >NC Dept. of Environment, Health, and Natural Resources >401 Oberlin Road, Suite 150 >Raleigh, NC 27605-1350 > >NCCGIA Director, Karen Siderelis >Database Administration, Zsolt Nagy >Database Management, Ken Shaffer >Project Manager, David Giordano >North Carolina Center for Geographic Information and Analysis >Governor's Office >Office of State Planning >301 North Wilmington Street, Suite 700 >Raleigh, NC 27601-2825
The Hazardous Substance Disposal Sites were originally supplied to NCCGIA by NC DEHNR-Div of Waste Management, Superfund Section with the locations delineated on USGS 1:24,000-scale 7.5 Minute series maps. The sites were digitized and attributed with a Superfund Section id number and a facility name, both of which were provided by the Superfund Section on the quad. Checkplots were made and overlayed on the USGS maps for review. Any necessary label corrections were made and new checkplots were run.
Using ESRI's Arc/Info GIS software, the data set was built for arc and polygon topology using the "build" command. Topology has not been edited since the last build or clean.
These data represent the locations and identities of the Hazardous Substance Disposal Sites listed on both the National Priority List and the State Priority List as of June 21, 1995.
Site locations were marked on 7.5 Minute USGS topographic maps which match National Map Accuracy Standards, using a best estimate with reference to surrounding features. All sites digitized as points were given a 50 foot buffer, so it would be possible to include all sites in one coverage (points and polygons cannot exist in the same coverage).
Locations of sites and facility names supplied on USGS quadrangles
Paper maps used to delineate the Hazardous Substance Disposal Sites
Digitization of Hazardous Substance Disposal Sites; handdrawn delineations of sites were supplied by the Superfund Section on USGS 7.5 Minute series basemaps for digitization. The data were digitized on Calcomp digitizing tables. Points were given a 50-foot buffer, so they could be included in the same coverages as polygons. The files were attributed and checkplots were created for review by the Superfund Section. Necessary correction were made and new plots were run. Post processing of digitized data involved edgematching and mapjoining of USGS 7.5 Minute series maps used to create the digitized data. This process generated one statewide polygon coverage.
301 North Wilmington Street, Suite 700
Phone and electronic mail preferred
Metadata imported.
Internal feature number.
ESRI
Feature geometry.
ESRI
Polygon internal identification number
Software computed
Polygon user identification number
Use-assigned feature number
Describes whether site is State or Federal
NC DEHNR-Div of Waste Management, Superfund Section
Federal site
NC DEHNR-Div of Waste Management, Superfund Section
State site
NC DEHNR-Div of Waste Management, Superfund Section
Superfund id number
NC DEHNR-Div of Waste Management, Superfund Section
Superfund id #
NC DEHNR-Div of Waste Management, Superfund Section
Longitude coordinate
software computed
Latitude coordinate
software computed
Stateplane x-coordinate
Software computed
Stateplane y-coordinate
Software computed
Facility name
NC DEHNR-Div of Waste Management, Superfund Section
Superfund id
NC DEHNR-Div of Waste Management, Superfund Section
Superfund id number
NC DEHNR-Div of Waste Management, Superfund Section
From node identification number
software computed
To node identification number
software computed
Left arc identification number of polygon
software computed
Right arc identification number of polygon
software computed
Length of arc in coverage units
software computed
Internal identification number
software computed
User identification number
software computed
This data layer has a polygon attribute table. AREA, PERIMETER, HSDS#, and HSDS-ID are computer defaults. The remaining attributes were supplied by the Superfund Section of the Div. of Waste Management. CODE# identifies the site as State or Federal; COMPANY supplies the facility name; SIS#, NCD#, NONCD#, and SSF# are all superfund id numbers; LONG, LAT, X-COORDINATE, and Y-COORDINATE represent latitude/longitude and Stateplane coordinates, respectively. >PAT - Polygon Attribute Table >COLUMN ITEM NAME WIDTH OUTPUT TYPE DEC DESCRIPTION >1 AREA 4 12 F 3 Total area in meters >5 PERIMETER 4 12 F 3 Total perimeter in meters >9 HSDS# 4 5 B - Poly internal id number >13 HSDS-ID 4 5 B - Poly user id number >17 CODE# 2 2 B - State or Federal >19 SIS# 15 15 C - Superfund id number >34 NCD# 15 15 C - Superfund id number >49 LONG 20 20 C - Longitude coordinate >69 LAT 20 20 C - Latitude coordinate >89 X-COORD 4 12 F 3 Stateplane x-coordinate >93 Y-COORD 4 12 F 3 Stateplane x-coordinate >97 COMPANY 80 80 C - Facility name >177 NONCD# 15 15 C - Superfund id number >192 SSF# 15 15 C - Superfund id number >This layer has an arc attribute table. >The items FNODE#, TNODE#, LPOLY#, RPOLY#, LENGTH, HSDS#, and >HSDS-ID are computer generated defaults. A deductive estimate was used >to determine the attribute accuracy value. >AAT - Arc Attribute Table >COLUMN ITEM NAME WIDTH OUTPUT TYPE DEC DESCRIPTION >1 FNODE# 4 5 B - From node identification number >5 TNODE# 4 5 B - To node identification number >9 LPOLY# 4 5 B - Left arc identification number >of polygon >13 RPOLY# 4 5 B - Right arc identification number >of polygon >17 LENGTH 4 12 F 3 Length of arc in coverage units >21 HSDS# 4 5 B - Internal identification number >25 HSDS-ID 4 5 B - User identification number
None
301 North Wilmington Street, Suite 700
Phone and electronic mail preferred For current price information use a web browser: COST INFORMATION - http://www.cgia.state.nc.us/cost.html
NCCGIA is charged with the development and maintenance of the State's corporate geographic database and, in cooperation with other mapping organizations, is committed to offering its users accurate, useful, and current information about the state. Although every effort has been made to ensure the accuracy of information, errors and conditions originating from physical sources used to develop the corporate database may be reflected in the data supplied. The client must be aware of data conditions and bear responsibility for the appropriate use of the information with respect to possible errors, original map scale, collection methodology, currency of data, and other conditions specific to certain data. NCCGIA does not support secondary distribution of this data. The use of trade names or commercial products does not constitute their endorsement by the NCCGIA or North Carolina State Government.
Data creation and large data analysis jobs contact Database Administration P:(919)733-2090. All data is available through standard ordering procedures on a cost recovery basis.
301 North Wilmington Street, Suite 700
Phone and electronic mail preferred