SIP Approval: Montana (administrative rule revisions relating to treatment of excess emissions from aluminum plants). 

SIP Approval: Montana (administrative rule revisions relating to treatment of excess emissions from aluminum plants). 

SIP Approval: Montana (administrative rule revisions relating to treatment of excess emissions from aluminum plants). 

SIP Approval: Alaska (incorporation by reference of certain federal air regulations and addition of a pre-approved emission limit option that may be used to permit diesel engine facilities). 

SIP Approval: Alaska (incorporation by reference of certain federal air regulations and addition of a pre-approved emission limit option that may be used to permit diesel engine facilities). 

SIP Approval: Alaska (incorporation by reference of certain federal air regulations and addition of a pre-approved emission limit option that may be used to permit diesel engine facilities). 

SIP Approval: Alaska (incorporation by reference of certain federal air regulations and addition of a pre-approved emission limit option that may be used to permit diesel engine facilities). 

SIP Approval: Alaska (incorporation by reference of certain federal air regulations and addition of a pre-approved emission limit option that may be used to permit diesel engine facilities). 

SIP Approval: Alaska (incorporation by reference of certain federal air regulations and addition of a pre-approved emission limit option that may be used to permit diesel engine facilities). 

A proposed settlement agreement under CERCLA requires settling defendants to perform a non-time critical removal action to remove mercury-contaminated sediments at the Pierson's Creek Superfund site in Newark, New Jersey, and to reimburse EPA for costs incurred in overseeing this work.