4.Property, Plant and Equipment

Property, plant and equipment (“PP&E”) is stated at cost, less accumulated depreciation. Depreciation is calculated on a straight-line basis over the estimated useful service life of the asset.

PP&E consists of the following:

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Accrued PP&E additions totaled $16.6 million and $14.2 million, respectively, at June 30, 2025 and December 31, 2024.

Abandoned Assets

During the three and six months ended June 30, 2025, we recognized $1.0 million and $1.5 million, respectively, in plugging and abandonment expense related to two stand-alone produced water handling facilities that were no longer economically beneficial to the operations of the Company and a portion of a pipeline that was above ground and no longer in service. This expense is included in “Abandoned Well Costs” in the condensed consolidated statements of operations.

During the six months ended June 30, 2024, we recognized $0.3 million in plugging and abandonment expense related to a stand-alone produced water handling facility that was no longer economically beneficial to the operations of the Company. This expense is included in “Abandoned Well Costs” in the condensed consolidated statements of operations.

Abandoned Projects

During the six months ended June 30, 2025 and 2024, we recorded $0.2 million and $0.7 million, respectively, in abandoned project expense related to the write-off of permits for water handling facilities and right-of-way easements that either expired prior to use or that we no longer planned to use for future projects. Abandoned project expense is recorded in “Other Operating (Income) Expense, Net” in the condensed consolidated statements of operations.