ROSELAND, La. —

Scott Smith has had his fair share of experience with disasters, including working with fishermen to get foam on the water following the BP oil spill.

Now, he's boots on the ground in Roseland following that Aug. 22 explosion at Smitty's Supply. Advertisement

"Right now, we're trying to get close to ground zero, which we are," said Smith as he collected samples from a pond near the blast site. "How far is this oil spreading? It's clearly spreading."

For the past two weeks, he has been traveling around Tangipahoa collecting water and ground samples.

"What this will give us here today is a fingerprint of the chemical mixture and composition of this specific oil and toxic contamination," said Smith. "So, then we can match it up with 50 miles-plus downstream and figure ou

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