Not great, not terrible. I would have gone with:

>Tons of waste dumped in poorly regulated riverside landfills or directly into the waterways that flow across three countries end up accumulating behind a trash barrier in the Drina River in eastern Bosnia during the wet weather of winter and early spring.
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>Some 10,000 cubic meters (more than 353,000 cubic feet) of waste are estimated to have amassed behind the Drina River trash barrier in recent days, Furtula said. The same amount was pulled in recent years from that area of the river.
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>The countries of the region have made little progress in building effective, environmentally sound trash disposal systems despite seeking membership in the European Union and adopting some of the EU's laws and regulations.