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.
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
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