Wisconsin Department of Natural Resources
Air Management Program

NR438 Pollutants

You can download an Excel spreadsheet of all pollutants listed in the dropdown list below with the chemical's different reporting levels.

Table 1 of s. NR 438.03, Wis. Adm. Code, lists 705 pollutants. By finding the name of a pollutant in this Table of Contents you can find:
  • The Chemical Abstract Symbol (CAS) associated with the pollutant.
  • The typical usage of the chemical associated with the air pollutant.
  • If the air pollutant is listed in Section 112 of the Clean Air Act.
  • If the air pollutant is listed in Table 1 of s. NR 445.14, Wis. Adm. Code.
  • If the air pollutant is listed in Table 3 of s. NR 407.04, Wis. Adm. Code.
  • Whether the chemical is a billable air pollutant under s. NR 410.04, Wis. Adm. Code.
  • The amount of the air pollutant for which the air pollutant must be included in an air permit application in s. NR 407.04, Wis. Adm. Code.
  • The reporting threshold under s. NR 438.03, Wis. Adm. Code.
  • Links to other reference sources (outside the DNR) available on the air pollutant.
Contact information:
   Megan Corrado
   Emissions Data Manager
Choose a pollutant: [Use search box to narrow the list]

Chemical and Use Information
Chemical Abstract Symbol (CAS)
DNR Code
NEI Code
Use Information
Part of Group Total?
Regulatory Information
Clean Air Act Pollutant?
NR 445 Pollutant?
NR 407 Pollutant?
DNR Billable Pollutant?
NR 438 and NR 407 Information*
NR 407 Inclusion Amount (lbs)
NR 438 Reporting Level (lbs)
* For table levels in NR 445, please refer to the information in Nr 445, Wis. Adm. Code .
Reference Information     (all links exit DNR)
United States Environmental Protection Agency (USEPA)
TOXNET (Enter in Search Box)
ChemID (Enter in Search Box)
Use Reference