Biological Assessment of the Milltown Reservoir Sediments Operable Unit
CH2M HILL. 2003. Biological Assessment of the Milltown Reservoir Sediments Operable Unit. CH2M HILL. Helena, MT
This Biological Assessment (BA) evaluates the potential effects on bull trout (Salvelinus confluentus), a federally listed threatened species, and on bull trout proposed designated critical habitat from implementing the selected remedial action at the Milltown Reservoir Sediments Operable Unit. The purposes of the remedial action considered for this Operable Unit are to address human health risks and allow the recovery of the contaminated drinking water aquifer, and to reduce the potential impacts on aquatic life in the Clark Fork River downstream of Milltown Dam from the release of disturbed reservoir sediments and associated metals during ice scour events or, potentially, during catastrophic dam failure. Information presented in this BA follows the example of a bull trout BA that was described by the U.S. Fish and Wildlife Service (FWS 1999) in their “Endangered Species Act Biological Assessment Workshop.
- Type
- Unpublished Report
- Authors
- CH2M HILL
- Date of Issue
- 2003-04
- Publisher
- CH2M HILL
- Units
- GRKO
- Keywords
- Bull Trout, Critical Habitat, Interim fish passage, Water Quality