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A 2007 toxicity report for the National Toxicology Program provided evidence that high doses of chromium 6 caused cancers of the gastrointestinal tract in rats and mice at levels higher than 5 mg/L of water, (5 ppm, or 5,000 ppb). [41] [42] Average hexavalent chromium levels in Hinkley were recorded at 1.19 ppb, with an estimated peak of 20 ppb.
The 580 ppb chromium(VI) in the groundwater in Hinkley exceeded the 100-ppb total chromium maximum contaminant level (MCL) set by the United States Environmental Protection Agency (EPA). [60] It also exceeded the California MCL of 50 ppb (as of November 2008) for all types of chromium. [61]
An example of this chemical causing adverse health issues is through a well-known hexavalent chromium (chromium 6) pollution event in Hinkley, California. Groundwater contamination in Hinkley was caused by water containing hexavalent chromium being dumped on the ground by Pacific Gas and Electric (PG&E) from 1952 to 1966. PG&E used this ...
Even at very low levels, they have been linked to a range of health conditions, including thyroid problems, infertility and some cancers. People are exposed to PFAS in many ways, but drinking ...
‘Redistribution of groundwater has the largest impact on the drift of Earth’s rotational pole’ Alarming levels of groundwater extraction by humans have affected Earth’s rotation ...
Groundwater depletion is worsening in many of the world's farming regions. But a global study also found that some efforts are helping to boost aquifers. Groundwater depletion is worsening worldwide.
Hinkley is an unincorporated community in the Mojave Desert, in San Bernardino County, California, United States, 14 miles (23 km) northwest of Barstow, 59 miles (95 km) east of Mojave, 47 miles (76 km) north of Victorville and about a 120 mile (193 km) drive northeast of Los Angeles, just north of California State Route 58.
Erin Brockovich (née Pattee; born June 22, 1960) is an American paralegal, consumer advocate, and environmental activist who was instrumental in building a case against Pacific Gas & Electric Company (PG&E) involving groundwater contamination in Hinkley, California for attorney Ed Masry in 1993.