| On 10/20/2025, the potential presence of impacted material(s) was identified via hydrocarbon odor and hydrocarbon staining during the decommissioning activities at the STROH N 35-15, wellhead, samples: WH01 and FL01-R located at the wellhead in the same excavation. The volume of potentially impacted material(s) is not currently known. Out of an abundance of caution, the operator is submitting notification within 24 hours of the discovery of the potential presence of impacted material(s) soil. Initial soil sampling is underway to determine whether any constituents are present at levels in excess of Table 915-1 standards. Groundwater was not encountered during decommissioning activities. This location is within the Mule Deer Severe Winter Range High Priority Habitats. This location is located within the Municipality of Milliken. Final analytical results will be included as part of the supplemental Form 19 submission.
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