JPMorgan Chase is the target of a new environmental push demanding the bank end funding for tar sands drilling, HuffPost has learned.

In a new campaign set to be announced Tuesday, the San Francisco-based Rainforest Action Network criticizes the countrys largest bank by assets for providing over $3.1 billion to tar sands producers between 2014 and 2016 alone. Tar sands, a noxious mix of sand, clay and bitumen, are considered one of the dirtiest fossil fuels, and serve as a political lightning rod in the United States and Canada, the latter a top producer with reserves estimated at 166.3 billion barrels.

The group planned rallies on Tuesday afternoon in Denver, where JPMorgan CEO Jamie Dimon is visiting with local officials, and sent a letter to Mayor Michael Hancock urging that Colorados capital divest from the bank.

The move comes amid a push by the New York-based JPMorgan to burnish its green bona fides. Like much of the corporate world, JPMorgan publicly supported the Paris climate accord, the historic first emissions-cutting deal to include the United States and China. The bank discontinued funding for most coal projects last year and, earlier this year, vowed to spend $200 billion on renewable energy projects by 2020.

It is two-faced of JPMorgan Chase CEO, Jamie Dimon, to claim to support the Paris climate agreement, while his bank pours billions of dollars into accelerating climate catastrophe through tar sands mines and pipelines, Patrick McCully, climate and energy program director at the 32-year-old nonprofit, said in a statement to HuffPost.

Two spokespeople for JPMorgan did not respond to requests for comment on Tuesday morning.