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Average hexavalent chromium levels in Hinkley were recorded as 1.19 parts-per-billion (ppb), with an estimated peak of 20 ppb. Based on the PG&E Background Study, the PG&E Topock Compressor Station averaged 7.8 ppb and peaked at 31.8 ppb. [33] The proposed California health goal for hexavalent chromium was 0.02 ppb in 2011. [34]
California first established an MCL specifically for hexavalent chromium in 2014, set at 10 ppb; [21] prior to that only total chromium standards applied. A later study found that from 1996 to 2008, 196 cancers were identified among residents of the census tract that included Hinkley—a slightly lower number than the 224 cancers that would ...
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.
Hexavalent chromium is a well-known pollutant because it was the central chemical in the class-action lawsuit depicted in the film “Erin Brockovich” over chromium pollution in water in Hinkley ...
California has set a limit for the toxic heavy metal hexavalent chromium in drinking water. Advocates have called for a stricter limit, warning of health risks.
At the center of the case was the Hinkley compressor station, built in 1952 as a part of a natural-gas pipeline connecting to the San Francisco Bay Area. Between 1952 and 1966, PG&E used hexavalent chromium in a cooling tower system to fight corrosion.
The town of Hinkley, California (U.S.), had its groundwater contaminated with hexavalent chromium starting in 1952, resulting in a legal case against Pacific Gas & Electric (PG&E) and a multimillion-dollar settlement in 1996.
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 ...