Ohio Lime Company Gets New Rules for Stinky Kiln
Published Date: 12/11/2025
Rule
Summary
The EPA is giving a thumbs-up to new sulfur dioxide (SO2) pollution limits for Carmeuse Lime’s plant in Ohio, helping keep the air cleaner in Seneca County. These updated rules kick in on January 12, 2026, making sure the plant controls its emissions better. This means healthier air for the community without extra costs for taxpayers.
Analyzed Economic Effects
3 provisions identified: 2 benefits, 1 costs, 0 mixed.
New SO2 Limit for Local Air
EPA approved a new sulfur dioxide (SO2) emissions limit for the Carmeuse Lime Maple Grove facility in Seneca County, Ohio: a 30-day rolling average cap of 1,170 pounds per hour for the combined lime kiln stack. This approval is effective January 12, 2026, and EPA says the new limit will reduce emissions and help the area show compliance with the 2010 SO2 National Ambient Air Quality Standard.
No Significant Small-Business Impact
EPA certified that this action does not have a significant economic impact on a substantial number of small entities under the Regulatory Flexibility Act. The final rule approves State-issued limits and does not impose requirements beyond State law, effective January 12, 2026.
State Limit Now Federally Enforceable
EPA incorporated by reference Ohio's Director's Findings and Orders (DFFOs) for Carmeuse Lime into the federally enforceable State Implementation Plan, making the 1,170 lbs/hr SO2 limit federally enforceable under Clean Air Act sections 110 and 113 as of January 12, 2026. That means federal authorities can enforce the same emissions limit against the facility beginning on that date.
Personalized for You
How does this regulation affect your finances?
Personalize government policy and PRIA will tell you what this federal register document means for your household, plus every other regulation we track. PRIA reads each provision against your financial profile to show you exactly what matters to your wallet.
Key Dates
Department and Agencies
Related Federal Register Documents
2026-19072, Rescission of the Greenhouse Gas Findings for Fossil Fuel-Fired Power Plants and Repeal of Regulations for Power Plant Greenhouse Gas Emissions Under Clean Air Act Section 111
The EPA is proposing to cancel all greenhouse gas rules for fossil fuel power plants, saying the law doesn’t let them regulate these emissions for climate reasons. This change affects power plants across the U.S. and could impact future pollution limits and costs. Comments on this proposal are open until November 2, 2026, so now’s the time to speak up!
2026-19071, Partial Repeal of the Carbon Pollution Standards for Fossil Fuel-Fired Electric Generating Units
The EPA is rolling back most of the 2024 rules that limited carbon pollution from fossil fuel power plants. This change affects coal and gas plants by easing some strict limits on emissions and carbon capture technology. The new rules kick in on November 16, 2026, potentially saving money for power plants but raising questions about pollution control.
2026-18317, Updated Definition of “Waters of the United States”
The purpose of this supplemental notice of proposed rulemaking is for the U.S. Environmental Protection Agency (EPA) and the Department of the Army ("the agencies") to supplement and seek additional comment on certain aspects of an earlier proposal, published on November 20, 2025, to revise the regulations defining the scope of waters federally covered under the Clean Water Act in light of the U.S. Supreme Court's 2023 decision in Sackett v. Environmental Protection Agency. As stated in the agencies' November 20, 2025 Notice of Proposed Rulemaking (NPRM), the agencies intend for this rulemaking to provide greater regulatory certainty and increase Clean Water Act program predictability and consistency by clarifying the definition of "waters of the United States." After consideration of the public comments received on the NPRM, the agencies are issuing this notice to supplement the NPRM with additional regulatory options on certain aspects of the proposed rule.
2026-14112, Amendments and Nonconformance Penalties for Model Year 2027 and Later Heavy-Duty Highway Engines and Amendments to Inducement Provisions for SCR-Equipped Diesel Engines
Starting with model year 2027, the EPA is updating rules for big truck engines to make sure they last longer and pollute less. They’re also letting engine makers pay penalties if their engines don’t meet standards, and tightening rules for special pollution-control systems on diesel engines. These changes affect truck and engine makers and kick in soon, with public feedback due by August 29, 2026.
2026-13667, Minor New Source Review Program Air Permitting Public Participation Requirements for State Implementation Plans
The EPA wants to give states more freedom to decide how much public input is needed when approving small air pollution sources or changes. This means local air agencies can tailor public participation to fit their community’s needs while still protecting air quality. If you’re involved in air permits, watch for comment deadlines and possible virtual hearings this summer!
2026-13263, Revisions To Establish the Sixth Unregulated Contaminant Monitoring Rule (UCMR 6) for Public Water Systems
The EPA is rolling out the sixth Unregulated Contaminant Monitoring Rule (UCMR 6) to check for new, sneaky chemicals in public drinking water. Big water systems serving 3,300+ people and some smaller ones will test for 30 different contaminants, including certain PFAS and pesticides, to keep our water safe. Comments and feedback are open until late August 2026, and the EPA will host fun online meetings to chat about the plan!
Previous / Next Documents
Previous: 2025-22559, Safety Zone; Santa Barbara Harbor, Santa Barbara, CA
On December 14, 2025, from 6:30 to 7:30 p.m., the Coast Guard will block off a safety zone in Santa Barbara Harbor to keep people and boats safe during a fireworks show. No one can enter the area unless the Coast Guard says it’s okay. This temporary rule helps prevent accidents and protects the environment without costing anyone money.
Next: 2025-22564, Air Plan Approval; Tennessee; Second Period Regional Haze Plan
The EPA just gave a thumbs-up to Tennessee’s updated plan to clear up regional haze and protect the air you see in special natural areas. This plan, effective January 12, 2026, helps keep the skies clearer by cutting pollution from local sources. It mainly affects Tennessee’s environment and communities near protected parks, with no new costs for businesses announced.