1 / 2

Leviathan Mine: Downstream Risk RI Flow Chart

Compare Bryant and Reference stream COC concentration data for Tribal Resources Sediment, Soil, Surface Water, and Biota. Available COC concentration data for Tribal Resources Sediment, Soil and Surface Water, and Biota.

yale
Download Presentation

Leviathan Mine: Downstream Risk RI Flow Chart

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Compare Bryant and Reference stream COC concentration data for Tribal Resources Sediment, Soil, Surface Water, and Biota Available COC concentration data for Tribal Resources Sediment, Soil and Surface Water, and Biota Identify risks and conclude Bryant Creek risks are similar to Reference stream risks or are within the acceptable risk range Leviathan Mine: Downstream Risk RI Flow Chart Bryant Creek COC concentrations in Tribal Resources, Water, Sediment, Soil, and Biota similar to or less than Reference stream concentrations at 95% confidence? Are COC levels in Tribal Resources, Water, Sediment, Soil, and Biota from Bryant Creek and Reference Streams defined? Yes Yes DRAFT No No Perform Feasibility Study Conduct Field sampling of tribal resources, surface water, sediment, soil, and biota Compare COC concentrations to risk evaluation concentrations Yes Are Risks to Ecological and Human Receptors in Bryant Creek significantly greater than Reference Area Risks and unacceptable? Define COCs Define Tribal Resources (food, other material) Define Biota Identify Reference Streams Define ‘defined’ and ‘significantly’ No DRAFT

  2. Leviathan Mine: Acid Drainage Source RI Flow Chart Evaluate, identify and perform geophysical, groundwater and geochemical investigations to locate and characterize acid generation areas. No Evaluate, identify and perform investigations to characterize the specific physical and chemical processes occurring during generation and transport of acid drainage Evaluate Available COC concentration , hydrology, hydrogeology, and soil/rock physical and chemical data. Yes Are The area and volume of acid sources defined? Are the source specific physical and chemical processes that occur during the generation and transport of acid drainage defined? No Evaluate, identify and perform geophysical, groundwater and geochemical investigations to locate and characterize water contributing to acid generation . Are The migration pathways from identified acid sources to discharge locations defined? Are the sources and chemical characteristics for water contributing to acid generation identified? DRAFT Yes No Conduct Feasibility Study to minimize acid generation and/or migration Yes No Evaluate, identify and perform investigations to characterize the fate and transport of acid drainage at Leviathan Mine DRAFT Yes

More Related