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Show 'Utah Wildlife Part 6 Utah Water * Protection Act, UCA. Title Appropriations Act, UCA. Title 73, Currently processing L. RESPONSE I no treatment under Land waste ACTIONS/ACTION 23, Chapter 5, Chapter 3. standards' apply to mineral Disposal Restrictions. LEVELS - Soil The following action levels are provided as guidelines The for the investigation and scope of soil removal. criteria. these Work Plan These must incorporate constituent specific levels are based on standard default values for soil ingestion. These values are not based on a base-line risk assessment. The action levels provide for decision-making while conducting the If during the course of this soil removal. removal action Kennecott produces an EPA approved base re;'evaluate the soil will line risk EPA assessment, action levels. The following are total metals values: some basis source area Arsenic Cadmium Lead Selenium This above action metals 200 mg/Kg .... 1,000 mg/Kg 2,000 mg/Kg 1,000 mg/g .t ne removal of soil containing the concentrations greater than the action depths generally not' to exceed 18 inches. soils thae demonstrate leachability using requires at levels or to In addition, the synthetic precipitation leaching procedure (SPLP method '1312) evaluated for the potential must be to release hazardous substances to ground water at levels of concern. If it is determined that a threat to ground water exists, then to the extent practicable Kennecott will either remove additional sailor implement other actions to mitigate releases of hazardous substances to However, Kennecott may address threats to ground water. ground water under the terms of another enforceable agreement if it is in place prior to the completion of this work. In the event other hazardous substances are identified at the Site that pose a potential threat to human health and the environment, an appropriate action level will be established. Also, for those waste that are subject to as hazardous waste, the applicable regulatory management threshold may ,be used. ' M. POST-REMOVAL PLAN Requirements for (OPERATION AND MAINTENANCE) ensuring 7 the long term effectiveness of |
