After decades of putting hazardous and toxic waste into the Parker Street Dump, the city of New Bedford Massachusetts built a high school and middle school on the site. Today, the city is dealing with the toxic legacy.

"If taxpayers end up paying only 1 percent of the cost of cleaning up PCB contamination in the Fox River, that could be between $10 million and $15 million. If the taxpayer obligation reaches 10 percent, the figure becomes $100 million or more."

Residents of Treece, Kansas, try to go forward as they wait for buyouts at a Superfund site created by years of lead and zinc mining.

"NEW YORK -- Coal miner Consol Energy Inc launched an attack on environmentalists on Tuesday, blaming ecological "activism" for forcing it to idle two mines in West Virginia that employ nearly 500 workers." Activists countered that the coal company's violations were egregious and that Consol should follow the law.

"Frequent accidents at 10 of the state's biggest refineries resulted in the release of millions of pounds of toxic chemicals into the air and millions of gallons of polluted water into state water courses between 2005 and 2008, according to a report to be released this morning by the Louisiana Bucket Brigade."

"Selenium is an essential nutrient, but excess amounts can be dangerous to wildlife and people. Now the U.S. Environmental Protection Agency is preparing a new regulation that would require more than 600 coal-fired power plants to clean up -- perhaps even eliminate -- wastewater discharged into lakes, rivers and other waterways."

"The U.S. Environmental Protection Agency is on schedule to release federal guidelines for the disposal of coal ash some time this month, but a potential loophole in the new rules has some worried they will leave Iowans unprotected."

"BP Plc on Tuesday began cleaning up an oil spill from a leaky Alaskan pipeline, but said it has not determined what caused the leak or how much material spilled onto the snow-covered tundra."

Cleanup of polluting runoff from abandoned mines in Colorado and elsewhere is stalled by a legal paradox.

"Concerns about toxics discharged from an unlined coal ash waste dump in suburban Washington, DC have prompted four environmental groups to give formal notice that they intend to sue Mirant MD Ash Management, LLC and Mirant Mid-Atlantic, LLC Corporation of Atlanta, Georgia for Clean Water Act violations in Maryland."

"The Environmental Protection Agency issued a final rule Monday aimed at reducing pollution from construction sites, saying that it will significantly improve the quality of water nationwide."

Despite tens of billions spent under the 1972 Clean Water Act to upgrade the sewage-handling systems of U.S. cities, many have reached capacity and are unable to handle wet-weather flows. The result is that many are "violating the law by dumping untreated or partly treated human waste, chemicals and other hazardous materials into rivers and lakes."

"A U.S. agency has overturned its 2003 research that said no health hazards were caused by decades of military exercises on Vieques, a bombing range-turned-tourist destination off Puerto Rico's east coast."

Cleanup of toxic chemicals at 26 former Cold War missile sites in Kansas is an unfinished project.

"While the health effects of coal-ash disposal get most attention, a long list of other negative effects are overlooked. They include crushing financial burdens for people, companies, and governments; deepening mistrust of government; years of litigation; depressed property values; and more. These costs outweigh the costs of regulation, cleanup, and mitigation."