Two of the most prevalent and concerning chemicals found, Stoiber said, were arsenic and hexavalent chromium. Both chemicals were detected in all 50 US states, though they appear especially often ...

Questions remain about the size and depth of the plume, which may have reached or crossed the border into the San Ildefonso ...

The case alleged contamination of the water with the carcinogen hexavalent chromium, in the southern California town of Hinkley. "Hinkley woke me up", says Brockovich. "Everyone said the two ...

Police said the chemical was hexavalent chromium, which can cause cancer. Environmental officials said the clean-up operation would last for days. The chemical appeared to come from a business in ...