§232.500. Procedures for Listing and Delisting Toxic Air Contaminants

a)         Any person may submit a regulatory proposal to the Board to list or delist a toxic air contaminant.

 

b)         The proposal to list a contaminant as a toxic air contaminant, or to delist a toxic air contaminant, must include, at a minimum, the following:

 

1)         The contaminant or toxic air contaminant name and Chemical Abstract Service Number where applicable;

 

2)         The basis for listing or delisting pursuant to Section 232.200(b) or (c). This shall include but is not limited to, a showing of one of the following:

 

A)        The toxicity score or carcinogen classification is correctly determined pursuant to the Subpart C procedures;

 

B)        The Subpart C procedure for determining a toxicity score or carcinogen classification is not appropriate for the contaminant;

 

C)        The Subpart C procedure for determining a toxicity score or carcinogen classification is incorrectly applied for the contaminant;

 

D)        The studies used are inadequate for the purposes of the Subpart C procedure; or

 

E)        Additional or new studies should be considered in a determination to list or delist a contaminant.

 

3)         A copy of each study or report used to justify the proposal.

 

c)         The Agency shall participate in each proposal to list or delist a toxic air contaminant and must provide the Board with a recommendation as to advisability of listing or delisting.  Such recommendation must include a toxicity scoring pursuant to Section 232.300 and a carcinogen classification pursuant to Section 232.310.

 

d)         The Agency will propose an update of the list of toxic air contaminants to the Board no less frequently than once every 2 years.