Brazil's Sao Paulo state water and electricity department DAEE is planning a 64mn-real (US$38mn) project to dredge the state's Tiete river, according to a state government release.
"The governor has authorized us to call a tender. However, we are still studying final project details and have not yet set a date set for the bid competition," a DAEE spokesperson told BNamericas.
The project entails removing 1Mm3 of sediment from the river, which currently contains 2.1Mm3 of sediment, largely solid waste. The river contained 2.7Mm3 of solid matter before 2010, when work was carried out to remove 1Mm3.
The dredging work is part of phase III of the state government's Tiete river cleanup project, aimed at remediating contamination in the river and expanding wastewater collection and treatment services to prevent further pollution.
This phase has a total cost of 1.05bn reais, and is scheduled for completion in 2015. The work will benefit 1.5mn people with wastewater collection and 3mn people with wastewater treatment service.