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.
NC DEHNR - Divison of Waste Man, Superfund Section, 19981201, onemap_prod.SDEADMIN.hsds: NC DEHNR - Divison of Waste Management, Superfund Section, Raleigh, North Carolina.Online Links:
- www.nconemap.com
Planar coordinates are encoded using coordinate pair
Abscissae (x-coordinates) are specified to the nearest 0.001173
Ordinates (y-coordinates) are specified to the nearest 0.001173
Planar coordinates are specified in meters
The horizontal datum used is North American Datum of 1983.
The ellipsoid used is Geodetic Reference System 80.
The semi-major axis of the ellipsoid used is 6378137.000000.
The flattening of the ellipsoid used is 1/298.257222.
| Range of values | |
|---|---|
| Minimum: | 95.612 |
| Maximum: | 891394.875 |
| Units: | meters |
| Resolution: | 0.001 |
Facility names are variable in length and number of words.
Sequential unique whole numbers that are automatically generated.
| Range of values | |
|---|---|
| Minimum: | 33 56 31.194590 |
| Maximum: | 83 57 59.211296 |
| Range of values | |
|---|---|
| Minimum: | 75 32 22.965514 |
| Maximum: | 83 57 59.211296 |
Coordinates defining the features.
| Range of values | |
|---|---|
| Minimum: | 1 |
| Maximum: | 902 |
| Range of values | |
|---|---|
| Minimum: | 1 |
| Maximum: | 902 |
| Range of values | |
|---|---|
| Minimum: | 1 |
| Maximum: | 880 |
| Range of values | |
|---|---|
| Minimum: | 1 |
| Maximum: | 885 |
| Range of values | |
|---|---|
| Minimum: | 53.412 |
| Maximum: | 15395.658 |
| Range of values | |
|---|---|
| Minimum: | 1 |
| Maximum: | 913 |
| Range of values | |
|---|---|
| Minimum: | 0 |
| Maximum: | 32 |
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
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
(919) 733-2801, extension 291 (voice)
(919) 733-4811 (FAX)
N/A
This data was created to assist governmental agencies and others in making resource management decisions through use of a Geographic Information System (GIS).
NC DEHNR-Div of Waste Managemen, Superfund Section, 1994, Hazardous Substance Disposal Sites: NC DEHNR-Div of Waste Management, Superfund Section, Raleigh, North Carolina.
Survey, US Geological , 1938-1990, USGS 7.5 Minute series quadrangles: US Geological Survey, Reston, Virginia.
Person who carried out this activity:
(919) 733-2090 (voice)
(919) 715-0725 (FAX)
dataq@cgia.state.nc.us
Data sources used in this process:
Data sources used in this process:
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.
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).
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.
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.
Are there legal restrictions on access or use of the data?
- Access_Constraints: None
- Use_Constraints:
- 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.
(919) 733-2090 (voice)
(919) 715-0725 (FAX)
dataq@cgia.state.nc.us
Hazardous Substance Disposal Sites
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.
FOR DIGITAL OR NON-DIGITAL DATA, Contact NC CGIA, Data Distribution to order data, Phone 919.733.2090 ... Email dataq@cgia.state.nc.us ... Web Page order form <http://www.cgia.state.nc.us/cgdb/index.html>
For current FORMAT/MEDIA INFORMATION, use a web browser: <http://www.cgia.state.nc.us/cost.html> or phone NC CGIA Data Distribution 919.733.2090
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.
All formats supplied are created using ARC/INFO GIS software on Unix workstations. Other formats are available. Format compatibility is the user's responsibility. For more information on formats and media, use a web browser: FORMAT/MEDIA INFORMATION - <http://www.cgia.state.nc.us/cost.html>
(919) 733-2090 (voice)
(919) 715-0725 (FAX)
dataq@cgia.state.nc.us