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Biological Assessment 

of the Environmental Impact Statement for the 

Lost Creek Uranium In-Situ Recovery Project 

Biological Assessment 

June 2012 

Final EIS - Lost Creek Uranium In-Situ Recovery Project - Volume II Appendix G G-1
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The BLM’s multiple-use mission is to sustain the health and productivity of the 

public lands for the use and enjoyment of present and future generations. The 

Bureau accomplishes this by managing such activities as outdoor recreation, 

livestock grazing, mineral development, and energy production, and by 

conserving natural, historical, cultural, and other resources on public lands. 

Prepared by 

AATA International, Inc.

Environmental Consulting

Denver, Colorado

Bureau of Land Management

Rawlins Field Office

Rawlins, Wyoming

June 2012

Final EIS - Lost Creek Uranium In-Situ Recovery Project - Volume II Appendix G G-2
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Table of Contents

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Final EIS - Lost Creek Uranium In-Situ Recovery Project - Volume II Appendix G G-3
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List of Acronyms and Abbreviations 

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Final EIS - Lost Creek Uranium In-Situ Recovery Project - Volume II Appendix G G-4
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Introduction 

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Final EIS - Lost Creek Uranium In-Situ Recovery Project - Volume II Appendix G G-5
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Table 1-1 Federally Listed Species, Critical Habitat, Candidate Species, and Species of

Concern That May be Affected by Projects in Sweetwater County, Wyoming

Species/Critical Habitat Scientific Name Status Habitat 

Mammals 

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Final EIS - Lost Creek Uranium In-Situ Recovery Project - Volume II Appendix G G-6
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Final EIS - Lost Creek Uranium In-Situ Recovery Project - Volume II Appendix G G-7
Final EIS - Lost Creek Uranium In-Situ Recovery Project - Volume II

Appendix G 
Final EIS - Lost Creek Uranium In-Situ Recovery Project - Volume II

Appendix G 
Final EIS - Lost Creek Uranium In-Situ Recovery Project - Volume II

Appendix G 
)LQDO(,6/RVW&UHHN8UDQLXP Final EIS - Lost Creek Uranium In-Situ $A* G-11 SSHQGL[ ppendix G* ,Q6LWX5HFRYHU\3URMHFW9ROXPH,, Recovery Project - Volume II

Habitat Description 

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Final EIS - Lost Creek Uranium In-Situ Recovery Project - Volume II Appendix G G-11
Final EIS - Lost Creek Uranium In-Situ Recovery Project - Volume II

Appendix G 
Project Description 

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Final EIS - Lost Creek Uranium In-Situ Recovery Project - Volume II Appendix G G-15
Final EIS - Lost Creek Uranium In-Situ Recovery Project - Volume II

Appendix G 
Mitigation Measures included in Proposed Action 

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Status of Species and Critical Habitat in Action Area 

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Plants 

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Effects and Conclusions 

Undetected Species, Not Likely to Exist in the Project Area 

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Table 3-2 Species that were Not Observed and Not Likely to Exist in the Action Area 

Species Status Effect/Impacts Conclusion 

Mammals 

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Species Observed in the Project Area 

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Cumulative Impacts 

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References 

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