A tar ball washed ashore near the Treasure Isle subdivision in Lake Pontchartrain as people fish near the Rigolets in Slidell on Monday. (Matthew Hinton - The Times-Picayune)
Seems to me the picture shows something other than a tarball. The tarballs I saw on the beach years ago, were solid objects. What's pictured is what I would call a viscous oil patty, something less than a solid.
From NOLA:
Showing just how unpredictable and all-consuming the massive Gulf oil spill can be, tar balls and small sheens of oil have entered Lake Pontchartrain and are hitting Texas shores for the first time.
John Lopez, director of the Lake Pontchartrain Basin Foundation's coastal stainability program, spotted the first tar balls in the Rigolets Pass on Sunday. By Monday, the blobs of oil had washed ashore as far west as Treasure Isle in Slidell.
Cleanup crews used nets to scoop up the tar balls throughout the day, collecting more than 1,000 pounds of oil and waste. BP also deployed 19 manual skimming vessels and four decontamination vessels to the area, and placed 600-feet of hard and soft boom at a choke point in the Rigolets to prevent more oil from entering the lake. Cleanup efforts are expected to resume today.
Lopez said oil made its way into the lake because of winds from the far edges of Hurricane Alex last week as well as sustained east and southeast winds during the weekend. The winds from Alex pushed a large amount of oil into the Mississippi Sound for the first time, and the east winds during the past few days pushed oil into Lake Borgne, the Rigolets and eventually the eastern stretches of Lake Pontchartrain.
....
"It has a fairly tortuous route to get to the lake, and that's why we're at day 70-something of the spill, and we're just seeing the oil reach Lake Pontchartrain," Lopez said. "This oil we're seeing probably headed east toward Alabama and Florida before it came this way. It's traveled probably at least 100-200 miles, depending on how far east it went."
Also on Monday, The Associated Press reported that Texas crews were removing tar balls from the Bolivar Peninsula and Galveston Island.
The Texas landfall and the encroachment into Lake Pontchartrain weren't unexpected, but they were staggering nonetheless, as the previously spared gateways to the highly populated areas saw the first physical evidence that they would not be immune.
The coastline from Texas to Florida, a vast area, is now affected by the gusher. Staggering, indeed, but entirely predictable, although, from the beginning, there were those who said, "It may not be that bad." I never said such a thing, because I knew it would be that bad and, very likely, worse. We have not yet seen the worst.