Toxic Release Inventory

Frequently-anticipated questions:

• What does this data set describe?
  1. How should this data set be cited?
  2. What geographic area does the data set cover?
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
  5. What is the general form of this data set?
  6. How does the data set represent geographic features?
  7. How does the data set describe geographic features?
• Who produced the data set?
  1. Who are the originators of the data set?
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
• Why was the data set created?
• How was the data set created?
  1. From what previous works were the data drawn?
  2. How were the data generated, processed, and modified?
  3. What similar or related data should the user be aware of?
• How reliable are the data; what problems remain in the data set?
  1. How well have the observations been checked?
  2. How accurate are the geographic locations?
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
  5. How consistent are the relationships among the data, including topology?
• How can someone get a copy of the data set?
  1. Are there legal restrictions on access or use of the data?
  2. Who distributes the data?
  3. What's the catalog number I need to order this data set?
  4. What legal disclaimers am I supposed to read?
  5. How can I download or order the data?
• Who wrote the metadata?

What does this data set describe?

1. How should this data set be cited?

   EPA - Environmental Protection Agency, Unknown, Toxic Release Inventory.

   Online Links:

   • \\HRL\data\Workspace\Worker_Bees\CBurton\4_EMD_2007\1_Updated_Shapefiles\2_Hazmat\tri\tri.shp

2. What geographic area does the data set cover?

   West_Bounding_Coordinate: -83.123382

   East_Bounding_Coordinate: -78.872745

   North_Bounding_Coordinate: 35.161777

   South_Bounding_Coordinate: 32.251661

3. What does it look like?

4. Does the data set describe conditions during a particular time period?

   Calendar_Date: Feb., 2007

   Currentness_Reference: Updated Feb. 2007

5. What is the general form of this data set?

   Geospatial_Data_Presentation_Form: vector digital data

6. How does the data set represent geographic features?
   1. How are geographic features stored in the data set?

      This is a Point data set. It contains the following vector data types (SDTS terminology):

      • Entity point (531)

   2. What coordinate system is used to represent geographic features?

      Grid_Coordinate_System_Name: Universal Transverse Mercator

      Universal_Transverse_Mercator:

      UTM_Zone_Number: 17

      Transverse_Mercator:

      Scale_Factor_at_Central_Meridian: 0.999600

      Longitude_of_Central_Meridian: -81.000000

      Latitude_of_Projection_Origin: 0.000000

      False_Easting: 500000.000000

      False_Northing: 0.000000

      Planar coordinates are encoded using coordinate pair
      Abscissae (x-coordinates) are specified to the nearest 0.000000
      Ordinates (y-coordinates) are specified to the nearest 0.000000
      Planar coordinates are specified in meters

      The horizontal datum used is North American Datum of 1927.
      The ellipsoid used is Clarke 1866.
      The semi-major axis of the ellipsoid used is 6378206.400000.
      The flattening of the ellipsoid used is 1/294.978698.
      

7. How does the data set describe geographic features?

   tri

   FID

   Internal feature number. (Source: ESRI)

   Sequential unique whole numbers that are automatically generated.

   Shape

   Feature geometry. (Source: ESRI)

   Coordinates defining the features.

   FACILITY

   ADDRESS

   CITY

   COUNTY

   STATE

   FIPS

   ZIP

   TRIF_ID

   LAT1

   LON1

   N_WELL_I_

   N_RCRA_LAN

   N_LANDFILL

   N_SUB_LAND

   N_FUG_AIR

   N_PT_AIR

   N_PT_WATER

   N_WELII_

   N_TREAT

   N_RCRA_SUR

   N_SURFACE

   N_LANDDISP

   N_SUB_RELE

   N_TOT_RELE

   F_WELLS_I

   F_RCRA_LAN

   F_LANDFILL

   F_SUB_LAND

   F_DIS_STOR

   F_DIS_META

   F_DIS_WWAT

   POTW

   F_DWL_II_V

   F_D_RCRA_S

   F_DIS_SURF

   F_DIS_LAND

   F_DIS_OTHL

   F_DIS_OTHE

   F_DIS_WAST

   F_DIS_UNKN

   F_SUB_OTHE

   F_TOT_RELE

   TOT_RELEAS

   N_LON

   N_LAT

   N_MCODE

   N_LCODE

Who produced the data set?

1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
   • EPA - Environmental Protection Agency

2. Who also contributed to the data set?

3. To whom should users address questions about the data?
   Hazards and Vulnerability Research Institute
   University of South Carolina
   Columbia, SC 29208
   

   803-777-1699 (voice)
   

Why was the data set created?

Hazards assessment

How was the data set created?

1. From what previous works were the data drawn?

2. How were the data generated, processed, and modified?

3. What similar or related data should the user be aware of?

How reliable are the data; what problems remain in the data set?

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?

Access_Constraints: None

Use_Constraints: None

1. Who distributes the data set?[Distributor contact information not provided.]

2. What's the catalog number I need to order this data set?

   Downloadable Data

3. What legal disclaimers am I supposed to read?

4. How can I download or order the data?
   • Availability in digital form:

     Data format:	Size: 0.014

   • Cost to order the data:

Who wrote the metadata?

Dates:

Last modified: 28-Jun-2007

Metadata author:

Hazards and Vulnerability Research Institute
University of South Carolina
Columbia, SC 29208

803-777-1699 (voice)

Metadata standard:

FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)

Metadata extensions used:

• <http://www.esri.com/metadata/esriprof80.html>