Document mBmp6r3kBZO9B09n2mnzDDmQ0

From: Tillotson, Elizabeth [Elizabeth.Tillotson@graniteshorepower.com ent: 3/31/2025 11:12:51PM o: AirAction [AirAction@epa.gov] object: Presidential Exemption: National Emission Standards for Hazardous Air Pollutants [MATS RTR]: Merrimack Staton EIA Plant Code #2364 ttachments:GSP_Merrimack - MATS Presidential Exemption 3 31 25.pdf Caution: This email originated from outside EPA, please exercise additional caution when deciding whether to open attachments or click on provided links. Flag: Follow up Please accept the attached letter on behalf of GSP Merrimack LLC ("GSP") requesting a Presidential exemption under Section 112(i)(4) of the Clean Air Act ("CAA") from compliance with the revised filterable particulate matter ("fPM") surrogate emission standard for non-mercury metal hazardous air pollutants ("HAP") and the requirement to install and use a particulate matter continuous emissions monitoring system ("CEMS" or "PM CEMS") promulgated in the rule, commonly referred to as the MATS RTR, for the two coal-fired electric generating units ("EGUs") at Merrimack Station in Bow, New Hampshire. If you have any questions regarding this submittal, please contact Elizabeth Tillotson at elizabeth.tillotson@graniteshorepower.com Thank you. Elizabeth Tillotson Vice President Granite Shore Power 431 River Road Bow, NH 03304 Office 603.230.7968 Sierra Club FOIA 2025-EPA-04883 ED_018388_00000228-00001 SC_EVERSPLIT0005342