| On 12/03/2024, Howe USX AB33-04D flowline decommissioning activity was completed. During the completion of the activities, no potential presence of impacted material(s) was observed/smelled. Consistent with Rule 912, samples were collected and analyzed to determine whether any constituents are present at levels in excess of Table 915-1 standards. Final laboratory analytical results received on 1/23/2025, indicate the soil sample, FL01-03, discovered at the location the flowline was abandoned in place exceeded ECMC Table 915 standards for naphthalene at 0.17 mg/kg, benzo(a)anthracene at 0.342 mg/kg, benzo(a)pyrene at 0.190 mg/kg, 1-methylnaphthalene at 0.0172 mg/kg, and 2-methylnaphthalene at 0.0326 mg/kg. Groundwater was not encountered during decommissioning activities. This location is within the Mule Deer Severe Winter Range High Priority Habitat. |