EPA keeps Lubrizol’s Deer Park permit in place

EPA denied Harris County’s petition to block Lubrizol Corporation’s Deer Park Plant permits, leaving the Texas-issued Title V controls in place. The agency’s May 11 order was published June 22, 2026, and ends the county’s bid for a federal objection.

Comment deadline: August 21, 2026 Submit comments: https://www.epa.gov/title-v-operating-permits/title-v-petition-database Effective date: May 11, 2026

Because EPA did not object, the Texas-issued permit remains the governing framework for the plant. Permits Nos. O1931 and O1932 stay in place, and Lubrizol continues operating under the state permit terms already on the books.

The permit still sets the rules

Title V permits are the operating rulebook for major air-pollution sources. They gather the conditions a facility has to follow in one place, which is why a federal decision to stay out matters: the state permit keeps doing the work unless EPA steps in.

This notice does not add a new finding about emissions violations or about the plant’s broader environmental record. It is a narrow answer to a narrow request, and the answer leaves the existing permit structure intact.

A federal backstop that never kicked in

For Harris County, the practical result is simple. The county asked EPA to object; EPA declined; the Texas permit remains the one Lubrizol lives under at Deer Park.

For readers outside the permit law, the takeaway is less about the paperwork than the consequence. A state permit that survives federal review is still the document that tells a major industrial site what it can do, and this order leaves that document untouched.

Agency: Environmental Protection Agency Docket ID: 2026-12423 CFR parts: Title V Comment deadline: August 21, 2026 Effective date: May 11, 2026 Submit comments: https://www.epa.gov/title-v-operating-permits/title-v-petition-database Contact: Aimee Wilson • EPA Region 6 Office; Air Permits Section • (214) 665-7596 • wilson.aimee@epa.gov