Document kDY5Kg4dbvwJy707ezL76a8yy

Cooperative) due to power purchases during Winter Storm Uri from the ERCOT market. 76. The following Tables compile of all of the harms identified herein that Minnkota will suffer due to the Final Rule. Table A: MRY 1 and 2 Mercury Compliance Costs Activity MRY Unit 2 Capital Costs: Future mercury testing to determine lowest achievable rate Inlet Hg Monitor Cost S600,000 $150,000 WFGD Additive Dosing system $750,000 WFGD Oxidizing Reduction Potential (ORP) Monitoring System Mercury New PAC Silo and injection equipment capital cost to reach the lowest achievable rate $7,500 55,000,000 MRY Unit 2 Operating & Maintenance (O&M) Costs: WFGD Additive costs (based on annual operation) $1,412,000 Mercury control additional PAC costs (based on annual operation) $1,300,000 Notes This is a minimum value. 'I'o track coal quality 'I'o attempt to reduce mercury emissions further For WFGD dosing system feedback Based on industry data from similar projects; This is the total project cost without financing costs. Based on MRY usage rate and supplier pricing Based on EPA hypothetical 5.0 lb/MMacf injection rate for 800 MW unit -35- Sierra Club FOIA 2025-EPA-04883 ED_018388_00000327-00087 SC_EVERSPLIT0006396