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Risk-Screening Environmental Indicators (RSEI) Model

RSEI Data Dictionary: Standard Industrial Classification (SIC) Data

                      Additional Tables in the RSEI Data Dictionary  
  Facility NAICS Media Elements Aggregated Microdata Census Crosswalks  
  Offsite Chemical Submission Category Block Group Microdata Population Data  
  SIC MCL Release Disaggregated Microdata Water Microdata Shapefiles  

SIC codes are no longer collected by TRI, but RSEI maintains them because some parameters (chromium speciation and stack height) are determined by SIC code.

SIC Data

Variable Description


Four-digit SIC code.


Text description of code.


Estimated percent of total chromium releases from SIC code that are hexavalent chromium (remainder is assumed to be trivalent form).