Air Plan Approval; Minnesota; Inver Hills SO2

The Environmental Protection Agency (EPA) is approving a revision to the Minnesota sulfur dioxide (SO2) State Implementation Plan (SIP) for Northern States Power Company's Xcel Energy-Inver Hills Generating Plant (Inver Hills), located in Inver Grove Heights, Minnesota. The revision, submitted by the Minnesota Pollution Control Agency (MPCA) on May 1, 2015, incorporates a more stringent limit for the sulfur content of the fuel used at the facility, and modifies the fuel analysis requirements to meet the more stringent limit. These revisions will not result in an increase in SO2 emissions at the facility.