Make us your home page
Instagram

Today’s top headlines delivered to you daily.

(View our Privacy Policy)

Busy Coast Guard lab yields answers for beach communities worried by BP oil

The packages arrive midmorning at a small laboratory in southeastern Connecticut.

The cardboard boxes are carefully, tightly packed with 4-ounce jars. Inside those glass containers is a black goo that occasionally has stirred panic in some Florida coastal communities.

Is it from the Deepwater Horizon wellhead? Was it moved along by the powerful loop current in the Gulf of Mexico? Will it doom tourism in a coastal town?

This scenario has occurred hundreds of times since the April 20 disaster in the gulf. At the first sign of tar balls, oil sheen or a potential threat of oil off Florida or other Gulf Coast states, pollution investigators send samples to the U.S. Coast Guard's Marine Safety Laboratory in New London, Conn.

Military chemists conduct daily tests to determine who, if anyone, might be at risk.

Back home, locals anxiously await the results. A few weeks ago it was Cocoa Beach. Before that it was Miami and Key West.

"We're at more than five times our normal workload,'' said Wayne Gronlund, a chemist who runs the lab. "It's been fairly intense.''

So far, most of Florida has been lucky.

"I think,'' Gronlund said, ''we're all expecting it to change.''

• • •

Nine times out of 10, these samples come from the gulf. About half of them come from the Florida coast, where residents are especially wary of BP oil tarnishing their shores.

So far, no matches have been made south of the Panhandle.

"The harsh reality is that there's usually tar balls in Florida," Gronlund said. "They're just not as big a deal most of the time."

The first shipment of suspicious Florida oil arrived at the lab May 18. Tar balls dotted the beaches of the Keys, prompting headlines and fears that oil had entered the loop current and made its way south.

"The Coast Guard flew them up here in a hurry," Gronlund said.

No match.

The origin of those tar balls turned out to be a heavy fuel oil, not even close to the makeup of fresh crude. Actually, Gronlund said, most of the tar balls found on Florida's east and west coasts since May have been from heavy fuel sources.

It doesn't take an oil disaster to produce tar balls. They also form from natural seeps or sunken ships or other sources.

It ultimately falls to the Coast Guard lab to determine whether the oil is from the BP wellhead or some other source.

The lab employs 10 people: two chemists, six technicians and two administrative workers.

It can take anywhere from a few hours to a few days to determine if the sample matches the BP crude.

It took about a week to quell recent fears that BP's disaster was the cause for 80 pounds of beached oil in Cocoa Beach.

The lab makes no attempt to determine the source.

"We're the crime lab," Gronlund said. "We're not the investigators."

• • •

It's a complex process.

First, technicians reduce the glob to its purest form, extracting water, seaweed and sand.

That readies the oil for its first test. It enters a machine that separates components by their boiling points.

Chemists then examine the components to see if any match the makeup of BP's crude.

If it's obviously not a match, they can file a report within four or five hours.

But if uncertain, chemists move to a second phase, known as molecular fingerprinting.

In a complex testing process than often takes several hours, a machine looks for molecules that existed at the time the oil glob was formed. Petroleum formed in varying conditions can exhibit clear chemical differences.

A series of complex graphics further break down the molecules and reveal any fundamental differences between the sample and BP crude.

At that point, there are no doubts. It's a match or it's not.

The little lab in Connecticut decides, and another beach learns its fate.

In Cocoa Beach, it was relief.

"We were very glad to know that the oil didn't come from the gulf,'' said Jerry Stansfield, the city's public information officer. "But that could change. You don't know what going to happen. We're watching and we're preparing.''

Busy Coast Guard lab yields answers for beach communities worried by BP oil 07/18/10 [Last modified: Monday, July 19, 2010 7:15am]
Photo reprints | Article reprints

© 2017 Tampa Bay Times

    

Join the discussion: Click to view comments, add yours

Loading...
  1. Pitching on no rest backfires for Erasmo Ramirez, Rays

    The Heater

    ARLINGTON, Texas — After battling through a 61/2-hour affair Sunday in Minnesota that was the second-longest game in franchise history, Rays officials were quick to decide that even though Erasmo Ramirez had just worked the 15th and final inning, they would stick with him to start Monday's game in Texas.

    Erasmo Ramirez, starting a day after closing a 15-inning marathon, struggles against the Rangers, comes out after throwing 43 pitches in 21/3 innings.
  2. Britain investigating missed signals over Manchester bomber

    World

    LONDON — Britain's domestic intelligence agency, MI5, is investigating its response to warnings from the public about the threat posed by Salman Abedi, the suicide bomber who killed 22 people and wounded dozens more in an attack at a crowded Ariana Grande concert in Manchester, England, last week.

    People gather Monday at St. Ann’s Square in Manchester, England, to view tributes to victims of the suicide bombing that killed 22 on May 22 as a concert by Ariana Grande was concluding.
  3. Trump condemns killing of pair who tried to stop racist rant

    Nation

    The mayor of Portland, Ore., on Monday urged U.S. officials and organizers to cancel a "Trump Free Speech Rally" and similar events, saying they are inappropriate could be dangerous after two men were stabbed to death on a train as they tried to help a pair of young women targeted by an anti-Muslim tirade.

    Coco Douglas, 8, leaves a handmade sign and rocks she painted at a memorial in Portland, Ore., on Saturday for two bystanders who were stabbed to death Friday while trying to stop a man who was yelling anti-Muslim slurs and acting aggressively toward two young women. From left are Coco's brother, Desmond Douglas; her father, Christopher Douglas; and her stepmother, Angel Sauls. [Associated Press]
  4. What major sporting event could Tampa Bay land next?

    Lightning Strikes

    We are on quite a roll as a community. First, we had a Super Bowl drop from the storm clouds into our lap. It just reaffirms the fact that Tampa Bay is great at lap. And Monday it became official: Next year's NHL All-Star Game will be held at Amalie Arena. The best in the world will be here to shoot and score. And …

    MVP Wayne Gretzky is congratulated at the 1999 NHL All-Star game, the last time the event was in Tampa Bay. [DIRK SHADD   |   Times file]
  5. How the 2018 NHL All-Star Game reflects Jeff Vinik's vision for Tampa

    Lightning Strikes

    TAMPA — There were several reasons the NHL announced Monday that Tampa will host the 2018 All-Star Game on Jan. 28.

    This was the  logo for the 1999 NHL All-Star game played Sunday, Jan 24, 1999 at the Ice Palace in Tampa Bay. (AP Photo)