The environmental department has undertaken 373 separate cleanup projects at the 293 sites, according to the reports.

A landowner's permission has to be shown to the environmental department.

The environmental department said it had found high levels of contaminants in wells that monitor ground water at the site.

Most of the proceeds will benefit programs at the environmental department.

It also has an environmental department and an extensive social assistance program.

With the help of the environmental department, nine other towns began hazardous waste collection days that year as well.

They have their own public works department, environmental department, and tribal administration.

In 2005, they eliminated their environmental department for political and economic reasons.

Ms. Ash said the environmental department was trying to assess the impact of the spill.

In December, the environmental department ordered the companies to clean 86 of the 104 sites.