Eight tanks, full of cow urine and other dairy waste have blocked the entrance to ACC's central Wellington office this morning, in a statement against a large-scale irrigation project.
Greenpeace protesters used six tonnes of dairy sewage to block two main entrances to the Molesworth St offices.
The group said it was protesting over links it believed the government agency had to the Ruataniwha irrigation scheme in Hawke's Bay.
Earlier this year there was some speculation about the fund being a potential investor in the dam, however, ACC has repeatedly refused to confirm or deny its link to the project.