From EPR Compliance Assessment Report:
The incident occurred on the 27th February was caused by a surface water management problem. A trial de-watering and treatment method for surface water from the well pad following heavy rainfall did not provide sufficient treatment to prevent silt entering this tributary. The trial used an excavated pit to allow the settlement of silt before passing through a bag filter, the filtered water then percolated through limestone before passing into the well pad header drain connected to a field drain.
Type:
Uncontrolled Discharge
Field:
Unconventional
Stage:
Exploration
Region:
Company:
Action:
Ordered to implement a well pad surface water management system to protect a local watercourse. Prevent surface water containing silt from entering watercourses.