Company: DK
Filing Date: 2025-02-26
Form Type: 10-K
Source: 0001694426-25-000013
Chunk: 114

Company: Delek US Holdings, Inc.
Filing Date: 2025-02-26
Form: 10-K
Item: Item 1A
Chunk 114
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 into "global" settlements under the EPA National Refinery Initiative. 

In 2015, the EPA finalized reductions in the NAAQS for ozone, from 75 ppb to 70 ppb. Our Tyler refinery is located near areas classified as being in non-attainment with the new standard. However, the refinery area has not been classified as being in non-attainment with the new standard. If air quality near our facilities worsens in the future, it is possible that these area(s) could be reclassified as being in non-attainment for the new ozone standard which could require us to install additional air pollution control equipment for ozone forming emissions in the future. We do not believe such capital expenditures, or the changes in our operation, will result in a material adverse effect on our business, financial condition or results of operations.

In late 2015, the EPA finalized additional rules regulating refinery air emissions from a variety of sources (such as cokers, flares, tanks and other process units) through additional New Source Performance Standard and National Emission Standards for Hazardous Air Pollutants and changing the way emissions from startup, shutdown and malfunction operations are regulated (the "Refinery Risk and Technology Review Rules" or “RTR”). The RTR rule also requires that we monitor property line benzene concentrations at our refineries, and report those concentrations quarterly to the EPA, which will make the results available to the public. Even though the concentrations are not expected to exceed regulatory or health-based standards, we have experienced some time periods above the action level, and have taken the corrective actions required by the RTR for those time periods. The availability of such data may increase the likelihood of lawsuits against our refineries by the local public or organized public interest groups. 

In addition to our operations, many of the fuel products we manufacture are subject to requirements of the CAA, as well as related state and local laws and regulations. The EPA has the authority, under the CAA, to modify the formulation of the refined transportation fuel products we manufacture, in order to limit the emissions associated with their final use. We have purchased credits in the past to comply with these content requirements for two of our refineries. Although credits have been readily available, there can be no assurance that such credits will continue to be available for purchase at reasonable prices, or at all, and we could have to implement capital projects in the future to reduce benzene levels.

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Risk Factors

Risks Related to Water Emissions Regulations

Our operations