Skip to main content
U.S. flag

An official website of the United States government

Here’s how you know

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

HTTPS

Secure .gov websites use HTTPS
A lock (LockA locked padlock) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

    • Environmental Topics
    • Air
    • Bed Bugs
    • Cancer
    • Chemicals, Toxics, and Pesticide
    • Emergency Response
    • Environmental Information by Location
    • Health
    • Land, Waste, and Cleanup
    • Lead
    • Mold
    • Radon
    • Research
    • Science Topics
    • Water Topics
    • A-Z Topic Index
    • Laws & Regulations
    • By Business Sector
    • By Topic
    • Compliance
    • Enforcement
    • Laws and Executive Orders
    • Regulations
    • Report a Violation
    • Environmental Violations
    • Fraud, Waste or Abuse
    • About EPA
    • Our Mission and What We Do
    • Headquarters Offices
    • Regional Offices
    • Labs and Research Centers
    • Planning, Budget, and Results
    • Organization Chart
    • EPA History

Breadcrumb

  1. Home
  2. 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

SICCode

Four-digit SIC code.

LongName

Text description of code.

PCT_CH6

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

Risk-Screening Environmental Indicators (RSEI) Model

  • TRI Program Home
  • Learn About RSEI
    • How RSEI Should Be Used
  • Understanding RSEI Results
    • RSEI & TRI Emissions Data
    • EasyRSEI Basics
    • RSEI Geographic Microdata
  • Ways to Get RSEI Results
    • RSEI Results Map
    • EasyRSEI Dashboard
  • RSEI Data & Modeling
  • RSEI Toxicity Weights
  • Documentation and Help
    • EasyRSEI Online Help
    • RSEI Queries
    • RSEI Data Dictionary
    • RSEI Bibliography
    • Glossary
Contact Us About the RSEI Model
Contact Us to ask a question, provide feedback, or report a problem.
Last updated on April 3, 2025
  • Assistance
  • Spanish
  • Arabic
  • Chinese (simplified)
  • Chinese (traditional)
  • French
  • Haitian Creole
  • Korean
  • Portuguese
  • Russian
  • Tagalog
  • Vietnamese
United States Environmental Protection Agency

Discover.

  • Accessibility Statement
  • Budget & Performance
  • Contracting
  • EPA www Web Snapshot
  • Grants
  • No FEAR Act Data
  • Plain Writing
  • Privacy
  • Privacy and Security Notice

Connect.

  • Data
  • Inspector General
  • Jobs
  • Newsroom
  • Regulations.gov
  • Subscribe
  • USA.gov
  • White House

Ask.

  • Contact EPA
  • EPA Disclaimers
  • Hotlines
  • FOIA Requests
  • Frequent Questions
  • Site Feedback

Follow.