Arq Inc

Office and Facilities

We own or lease land and facilities in the following States:

Colorado - We lease approximately 24,000 square feet for our corporate headquarters and primary research and development laboratory.

Louisiana - We own the Red River Plant, which is located on approximately 61 acres. We also lease approximately 141,000 square feet in various locations that is used for production, distribution and storage.

Kentucky - We lease approximately 470 acres in Corbin, Kentucky where we operate the Corbin Facility.

Mining

As of December 31, 2023, we owned or controlled, primarily through long-term leases, approximately 1,975 acres of coal land for surface mining located in Natchitoches Parish, Louisiana ("Five Forks"). The majority of the Five Forks land is leased for mineral rights and right-of-use purposes that expire at varying dates over the next 30 years and contain options to renew. The remaining land is owned by us.

We also have approximately 380 acres of land containing bituminous coal waste at the Corbin Facility for recovery of bituminous coal fines, which is leased through August 31, 2025 and contains options to renew for successive five year terms until all merchantable fines are removed from the premises. Based on current operating assumptions, we intend to renew this lease for an additional five-year term.

Based on the materiality and the vertically-integrated company guidelines contained in Regulation S-K of the Securities Act and the Exchange Act, we have concluded that no additional disclosures related to our mining operations are required under this Item.