I investigated the above incident (ref. 01250936) and can confirm it was a repeat of another incident that was reported to us earlier. I traced the source to pollution to the a distribution centre in Shaw. Despite clean up it does appear that oil was not effectively contained at the time of the incident. I have therefore asked the operators to deploy booms and absorbent pads at the outfall to soak up any residual oil and I hope that this will resolve the problem.