POSTED: Friday, April 13, 2012 - 5:47pm
UPDATED: Friday, April 13, 2012 - 5:49pm
NEW ORLEANS, LA (NBC33) — Although the once ten mile long sheen  is starting to disappear, officials still don't know where it's coming from.
As of this morning of the sheen the size of the sheen was 100 yards by five miles.
The Coast Guard says it's between two oil producing facilities owned by Shell oil.
That oil giant says they're confident the oil isn't coming from their facilities.