| OCR Text |
Show The sources of lead and arsenic contamination in the believed to be tailings piles, waste rock dumps, slag heaps, and possibly other sources related to historical mining extraction and beneficiation activities that occurred in Bingham Canyon .. Since approximately 1870, large quantities of tailngs, waste rock, slag heaps, and possibly other sources of contamination were produced during lead mining operations in These sources of contamination are believed to Bingham Canyon. have washed down Bingham Canyon over time, during normal runoff and flood events, depositing lead and/or arsenic along Bingham Creek Channel and in the residential area now identified as part of the Site. 11. soil are Release Threatened or Rlease 12. Sampling activities conducted at the Site have led EPA determine that there is a significant potential for exposure to nearby human populations. The approximately 42 acres of tesidential occupied properties at the Site are contaminated with lead in concentrations in the upper two inches of soil equal to or EPA has determined that greater than 2500 mg/Kg. approximately 50% of these properties have soils contaminated with lead in excess of 5000 mg/Kg and that the contaminated soils at the Site associated with lead, arsenic, and other hazardous substances are continuing to be released into the environment including waters of the United States and waters of the State of Utah. These conditions may constitute an imminent and substantial endangerment to human health and the environment. to Endangerment Lead 13. is cumulative poison which can cause neurologic, cell Infants and children damage in humans. kidney, at the greatest risk fro exposure to lead. are Some lead compounds are also animal carcinogens adversely affecting the Arsenic is a human carcinogen and can be lungs and kidneys. fatal if ingested or inhaled in sufficient quantities by humans, and a blood Several exposure routes are associated livestock, and wildlife. with lead and arsenic contamination conditions at the Bingham Direct contact, ingestion, inhalation, and Creek Channel Site. inhalation resulting in ingestion of the lead and/or arsenic contaminated soils and dust pose the primary exposure pathways. Respondent the Respondent is the owner of real property in and along Bingham Creek Channel. Respondent is qualified to perform the actions 14. set forth in this Order 6 .. |
