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89 FR 42062
EPA amended requirements that apply to the petroleum and natural gas systems source category of the Greenhouse Gas Reporting Rule.
89 FR 41648
EPA finalized the residual risk and technology review conducted for NESHAPs for the primary copper smelting major source category.
89 FR 41319
SIP Approval: Kentucky (updates to definitions rule and certain incorporation by reference dates for the Louisville Metro Air Pollution Control District).