Suspected DDT dumpsite found off California

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Marine scientists say they have found what they believe to be more than 25,000 barrels containing DDT dumped off the southern California coast near Catalina Island.

According to a report released on its website by the Scripps Institution of Oceanography at the University of California San Diego, the barrels were discovered by two autonomous underwater vehicles used to map the seafloor.

DDT was developed in the 1940s as an insecticide, but banned by the U.S. Environmental Protection Agency in 1972, owing to its 'adverse environmental effects.' Today, DDT is classified as a probable carcinogen, according to a briefing on the Environmental Protection Agency's website.


RUNDOWN SHOWS:
1. Location of chemical dump site in San Pedro Basin
2. Use of AUV to photograph barrels of DDT
3. Barrels leaking DDT
4. DDT being sprayed on streets in the 1940s
5. Dolphins eat jackfish contaminated with DDT
6. Egg affected by DDT

VOICEOVER (in English):
"Marine scientists say they have found what they believe to be more than 25,000 barrels containing DDT dumped off the southern California coast near Catalina Island."

"According to a report released on its website by the Scripps Institution of Oceanography at the University of California San Diego, the barrels were discovered by two autonomous underwater vehicles used to map the seafloor."

"Found at a depth of 3,000 feet, Diana Aga, a chemistry professor at University at Buffalo who was not involved in the study, told the Associated Press that if the barrels had not leaked, they could be moved to an area where it was safer to dispose of them."

"DDT was developed in the 1940s as an insecticide, but banned by the U.S. Environmental Protection Agency in 1972, owing to its 'adverse environmental effects.' Today, DDT is classified as a probable carcinogen, according to a briefing on the Environmental Protection Agency's website."

"There have been previous indications of DDT in the water around southern California. A 2015 study in the Environmental Science and Technology journal found a high abundance of DDT and other man-made chemicals in the blubber of bottlenose dolphins."

"The scientists behind the new study are now questioning the long-term effects of DDT presence on the health of marine wildlife in the area, noting that DDT has already been shown to impact through several generations in humans."


SOURCES: EPA, Scripps Institution of Oceanography, Associated Press, Environmental Science and Technology, Nature
https://www.epa.gov/ingredients-used-pesticide-products/ddt-brief-history-and-status
https://scripps.ucsd.edu/news/scripps-oceanography-completes-seafloor-survey-using-robotics-finds-thousands-possible-targets
https://www.theguardian.com/environment/2021/apr/27/up-to-25000-barrels-found-at-suspected-ddt-dump-off-california-say-scientists
https://pubs.acs.org/doi/abs/10.1021/es505156q
https://www.nature.com/news/2007/071008/full/news.2007.149.html