At the time that a PG&E background study of chromium(VI) was conducted, average chromium(VI) levels in Hinkley were recorded as 1.19 ppb with a peak of 3.09 ppb. The PG&E Topock Compressor Station averaged 7.8ppb and peaked at 31.8ppb. The California MCL standard was still at 50 ppb at the completion of this background study.[61] In comparison, the Office of Environmental Health Hazard Assessment (OEHHA) of the California EPA, proposed a health goal of 0.06 ppb of chromium(VI) in drinking water in 2009.[62] In 2010, Erin Brockovich returned to Hinkley in the midst of claims that the plume was spreading, despite PG&E cleanup efforts.[63] PG&E continues to provide bottled water for the residents of Hinkley as well as offer to buy their homes.