River Rock Operating - Graybill Station (Dehy)(Air) - Oil Extraction Facility in Angola, Kansas

River Rock Operating - Graybill Station (Dehy)(Air) is an oil extraction facility located in Angola, Labette County, Kansas, United States. The facility is operational and focuses on oil extraction, contributing to the regional energy supply. Its location in the Mid-Continent oil region places it within a mature petroleum province with extensive infrastructure. The facility operates under the regulatory framework of the United States Environmental Protection Agency (EPA), including the Clean Air Act (CAA) and applicable state-level regulations in Kansas. Oil extraction facilities like this one typically employ dehydration and separation processes to treat crude oil before transport. The NAICS codes 211111 (Crude Petroleum Extraction) and 211120 (Natural Gas Liquid Extraction) indicate the facility handles both oil and associated gas liquids. As part of the oil extraction sector, this facility plays a role in the domestic energy supply chain. Its operational status ensures continued contribution to local employment and tax revenue. The facility's environmental footprint is managed through compliance with federal and state air quality and spill prevention regulations.

The facility is situated in a rural area of southeastern Kansas, a region with a history of oil and gas development. Local environmental considerations include potential impacts on air quality from volatile organic compounds and methane emissions, as well as groundwater protection from spills. The facility is subject to EPA's New Source Performance Standards (NSPS) for oil and gas extraction and Spill Prevention, Control, and Countermeasure (SPCC) rules.