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Motiva Enterprises (2719), Convent

Releases of Stormwater

LDEQ Accident Number
Accident Date		 Point Source(s) Notes Amount of Release
91502

2006-10-19		Outfall 001
Cause: Heavy rains during the week of 10/19 caused Motiva to bypass final pressure and sand filters of the Process Wastewater Treatment Unit (WWTU) to alleviate flooding of facility. Inactive MTBE/TAME Process Unit was overwhelmed with stormwater and flooded. Sampling of water showed no permit limits were exceeded. Dates on this incident are confusing; the two letters detail different flooding problems from the same storm, and one letter is dated 2005 but looks like it should be 2006. LDEQ report states "letter states SPOC notified of bypass 10/19/05, bypassing occurred 9/24/05. These dates are wrong" and that they contacted someone for a corrected letter.

Followup: No

Notes: no information given		5,000.0 gallons
142568

2012-08-30		Outfall 002
Cause: Upset conditions which led to a LPDES bypass as a result of Hurricane Isaac and the associated internal facility flooding that occurred as a result.

Followup: No

Notes: The bypass consisted of excess stormwater mixed with process wastewater and was made to the LPDES permitted stormwater pond which discharged via Outfall 002 to the Ascension Ditch, to the St. James Canal, and then to the Blind River. The stormwater drainage system was still compromised by flooding conditions and Outfall 002 continued to discharge until 09/01/2012 at 8:30pm. They mention that complete details are provided in a written report submitted on 09/07/2012 but we were unable to find this report. The facility claims that all permit required analytical information for Outfall 002 were within permit limits in august and september. The results show that the bypass didn't cause a water quality violation, exceed any reportable quantity, or exceed any permit limit.