Tag Archives: dumping coal in the sea

Hazardous Waste Dumping on the Los Angeles Seafloor

An expedition led by UC San Diego’s Scripps Institution of Oceanography mapped more than 36,000 acres of seafloor between Santa Catalina Island and the Los Angeles coast in a region previously found to contain high levels of the toxic chemical DDT in sediments and the ecosystem. The survey on Research Vessel (R/V) Sally Ride identified an excess of 27,000 targets with high confidence to be classified as a barrel, and an excess of 100,000 total debris objects on the seafloor

“Unfortunately, the basin offshore Los Angeles had been a dumping ground for industrial waste for several decades, beginning in the 1930s. We found an extensive debris field in the wide area survey,” said Eric Terrill, chief scientist of the expedition and director of the Marine Physical Laboratory at Scripps Institution of Oceanography. The expedition that ran March 10-24, 2021 was developed in collaboration with NOAA’s Office of Marine and Aviation Operations…The project, part of ongoing collaboration with NOAA’s Uncrewed Systems Operations Center, tested autonomous underwater vehicle (AUV) technology to map the seafloor….Two AUVs, the REMUS 6000 capable of working up to depths of 6,000 meters (19,600 feet), and Bluefin , capable of depths up to 1,500 meters (4,900 feet), were deployed to work in tandem to map the seabed at a high resolution…

In 2011 and 2013, UC Santa Barbara professor David Valentine discovered concentrated accumulations of DDT in the sediments in the same region, and visually confirmed 60 barrels on the seafloor. Scientists are also finding high levels of DDT in marine mammals including dolphins and sea lions, with exposure to PCBs and DDT linked to the development of cancer in sea lions. Reporting on this issue by the Los Angeles Times noted that shipping logs from a disposal company supporting Montrose Chemical Corp. of California, a DDT-producing company, show that 2,000 barrels of DDT-laced sludge could have potentially been dumped each month from 1947 to 1961 into a designated dumpsite. In addition to Montrose, logs from other entities show that many other industrial companies in Southern California used this basin as a dumping ground until 1972, when the Marine Protection, Research and Sanctuaries Act, also known as the Ocean Dumping Act, was enacted…

There is a lot to be understood towards how DDT is impacting our environment and marine food webs, according to Scripps chemical oceanographer and professor of geosciences Lihini Aluwihare, who in 2015 co-authored a study that found high abundance of DDT and other man-made chemicals in the blubber of Bottlenose Dolphins that died of natural causes… “These results also raise questions about the continued exposure and potential impacts on marine mammal health, especially in light of how DDT has been shown to have multi-generational impacts in humans. How this vast quantity of DDT in sediments has been transformed by seafloor communities over time, and the pathways by which DDT and its degraded products enter the water column food web are questions that remain to be explored.”


Dumping Coal in the Sea

Until recently Colombia was lax in enforcing its environmental laws. So it came as a shock to the country’s mining industry when, in January, the government halted coal exports from a port operated by Drummond, an American miner, in a row over pollution. The suspension has been costly not only for Drummond: its operations generate $66m a month in royalties and taxes for the Colombian treasury.

The mining minister, Amylkar Acosta, confirmed this week that the government would let the company resume its exports later this month, when it completes improvements to the port facility to prevent contamination of nearby beaches. The government has been under pressure to take action since environmentalists photographed an incident last year in which more than 500 tonnes of coal were dumped into the Bay of Santa Marta to stop a barge from sinking. Last month six employees at the port were charged, and face possible jail sentences. Drummond has been fined $3.6m and told to clean up the mess.

The case is an illustration of how the government, having welcomed foreign miners, is now having to contend with public disquiet over both pollution and the way the country’s mineral wealth is shared. In an election in May, President Juan Manuel Santos will seek a second term. So he cannot ignore the “hostile” climate of public opinion on the issue, says Alvaro Ponce, a Colombian mining expert.

Protests by nearby residents have delayed several big projects, including AngloGold Ashanti’s proposed gold mine in Tolima province and Eco Oro’s planned gold and silver mine in Santander province. A study by Colombia’s national audit office, published in January, found that economic and social development in towns next to large mining operations is worse than in places where illegal coca crops are grown for making cocaine.

The environment ministry is seeking new powers to require licences for exploration as well as extraction. Mining firms grumble that the process of getting projects approved is already tortuous enough. This and the recent fall in world prices of some minerals mean that up to $7.3 billion of investments are stalled, they say. Mr Acosta says the miners must accept that besides getting their official permits, they have to convince local communities to accept their presence, earning a “social licence” to operate. “Without that, the projects become unviable,” he says.

The backlash against mining has been building for some years. In the mid-2000s, when commodity prices were booming and Colombia’s internal conflicts were subsiding, the government offered incentives for foreign firms to come in and create mining jobs. It awarded exploration permits for swathes of territory, including in areas hitherto off limits, such as the fragile páramo tundra in the Andes. “The floodgates were opened,” says James Lockhart-Smith of Maplecroft, a risk-analysis firm.

But Colombia’s regulators were ill-prepared. In 2011 the government stopped accepting new applications for licences while it dealt with a backlog of 19,000. It rejected 90% of these, then turned its attention to 10,000 projects that had already been given licences, finding that 92% were failing in some way to comply with their conditions.

Despite all the stumbles and setbacks, Colombia is getting somewhere in its drive to exploit its mineral reserves. In 2013 mining investment was $3.6 billion, 21% more than in 2012. Mining already accounts for 2.3% of GDP and 7% of exports, and foreign companies are still lining up to explore new prospects. By the standards of resource-rich emerging economies, it is a fairly well-run place, so the chances are that it will succeed in coming up with a licensing regime that eases public worries without deterring investment. As in richer countries, mining projects will still be welcomed, but not at any price.

Mining in Colombia: Digging itself out of a hole, Economist, Mar. 15, 2014, at 61