A study by the California Environmental Protection Agency’s Office of Environmental Health Hazard Assessment suggests heat exposure may lead to a greater risk of infant mortality.
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Announcement of the withdrawal of the 2.5 ppb PHG for chromium, in order to develop a PHG specifically for chromium 6, or hexavalent chromium. The new PHG will replace the withdrawn "total chromium" PHG, which consists of both chromium 6 and chromium 3, a less toxic form of the metal.