| Early morning June 22, 2020, a separator fire tube failure resulted in a release of crude oil and produced water within an unlined containment system at the Rinn Valley Production Facility (COGCC Location ID: 455353). Approximately 50 bbls of crude oil and produced water were released into the unlined containment system. The secondary containment perimeter consisting of a corrugated metal wall, and the base material surrounding the separators, functioned as planned. However, investigations are on-going to determine if the base of the containment was sufficiently impermeable within the utility corridors. Crude oil and produced water are being recovered via hydro-vacuum and clearance samples will be collected. Collected samples will be field-screened and submitted for laboratory analysis. |