(Reuters] – A U.S. Environmental Protection Agency emergency air-quality waiver was issued by the EPA through June 6, to increase gasoline supplies in East Texas following a reduction of production at a regional refinery.

The waiver allows gasoline of winter-grade, higher volatility to be sold in 34 Texas counties. Biden’s administration has made available emergency oil stockpiles and will consider lifting the statutory smog restrictions nationwide in an effort to reduce rising fuel prices.

Most waivers are granted after major disasters, such as hurricanes, that significantly impact fuel supplies. Not for single-refinery outages like in Texas.

Texas Commission on Environmental Quality requested the waiver due to the fact that supplies were affected in 34 counties by the Delek U.S. Holdings oil refinery outage in Tyler. 

Delek has not responded to any requests for comment. According to their website, the Tyler refinery converts approximately 75,000 barrels per hour of fuel, diesel and propylene. A spokesperson from TCEQ stated that the agency couldn’t respond to inquiries on Saturday due to the holiday. In a statement, the EPA stated that the waiver is effective immediately.

A gallon of regular, unleaded gasoline cost $4.26 per gallon in Tyler, Texas on Sunday. That’s up from $2.77 last year. According to AAA motorist group, the national average for a gallon of regular unleaded gasoline is $4.61.