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Accident # | 148623 |
tate Police # | N/A |
Accident Date | 2013-05-10 |
Report Date | 2013-05-15 |
Follow-up Date | 0000-00-00 |
Follow-up: | No |
Pollutant | Duration | Point Source | Greenhouse Gas | Criteria Pollutant | Ozone forming chemical | Amount of Release |
Water or Wastewater | 1d 9h 5m | Refinery Wastewater Treatment System | NO | NO | NO | BRQ |
Accident Classified As: Below Reportable Quantity (BRQ)
On May 10, an unanticipated bypass incident at the Storm Water Impoundment Basin (SWIB) was due to an upset condition caused by heavy rainfalls associated with a series of thunderstorms. The site was initially able to contain the rainfall associated with this event and route it to the Refinery Wastewater Treatment System (RWTS) for treatment. However, the system storage capacity was reduced due to the amount of heavy rainfall that had occurred in such a short time frame. Motiva opened the spillway to prevent flooding of the refinery and damage to the SWIB from overtopping of the retaining levee. The spillway discharges to Engineer's Canal and then to Lake Pontchartrain.
Motiva's normal operating procedures cal for the initiation of bypass operations when no capacity remains in the RWTS and a bypass is the only alternative to prevent flooding of the facility. All required sample collection and analysis were conducted in conjunction with the opening of the spillway. Limits were not exceeded and visual inspection showed no signs of adverse water quality of the storm water discharge.
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