We are approving a site-specific revision to the Minnesota particulate matter (PM) State Implementation Plan (SIP) for LTV Steel Mining Company (LTV), formerly known as Erie Mining Company, located in St. Louis County, Minnesota. The Minnesota Pollution Control Agency (MPCA) submitted this SIP revision on September 29, 1998 in response to a request from LTV that EPA remove the Stipulation Agreement for Erie Mining Company from the State SIP. The rationale for the approval and other information are provided in this notice.