FARMINGTON, N.M. (AP) — A study that starts this week will try to pinpoint the sources of E. coli contamination in the San Juan and Animas rivers.

The Farmington Daily Times reports (http://bit.ly/OUwOTH) that the San Juan Watershed Group will gather samples from the Animas River in Colorado near the state line and at two spots in the Farmington area.

The group also will take samples from the San Juan River near the confluence of the Animas River and near Hogback.

The group won a $500,000 grant as part of a lawsuit settlement to complete the project.

David Tomko, the watershed group's coordinator, says in the last 10 years, sections of the rivers have exceeded New Mexico standards for the maximum amount of E. coli.

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Information from: The Daily Times, http://www.daily-times.com