Draft Terrestrial Resources Biological Assessment oregon highway 62 corridor solutions project

Draft Terrestrial Resources Biological Assessment

1.0Introduction 1

1.1 Purpose and Need 1

1.2 Project Background 1

1.3 Project History 1

1.4 Consultation Requirement 1

1.5 Analytical Framework 1

1.6 Special Status Species, Critical Habitat, and Assessment Findings 1

1.7 Consultation History 1

2.0 Project Description 1

2.1 Description of Project Activities 1

2.1.1 Build Alternatives 1

2.1.2 Common Design Features of the Build Alternatives (Commerce Dr to Dutton Rd) 1

2.1.3 Local Street Modifications 1

2.2 Construction Phasing 1

2.2.1 JTA Phase Design 1

2.2.2 Split Diamond Alternative Construction Phasing 1

2.2.3 Directional Interchange Alternative Construction Phasing 1

2.2.4 Northern Project Alignment (Agate Road to West Dutton Road) 1

2.2.5 Staging Areas and Access 1

2.3 Interdependent and Interrelated Actions 1

2.4 Mitigation and Monitoring 1

2.5 Project Area and Action Area 1

3.0 Environmental Baseline 1

3.1 Baseline Ecological Conditions within the Agate Desert Region 1

3.2 Vernal Pool Complex Habitats 1

3.2.1 Geology 1

3.2.2 Hydrology 1

3.2.3 Regional Ecological Conditions of Vernal Pool Complex Habitats 1

3.2.4 Vernal Pool Complex-Associated Species 1

3.2.5 Extent of Vernal Pool Complex Habitat Occurring in the Project Vicinity 1

3.3 Vernal Pool Functional Assessment 1

4.0 Natural History and Species Occurrence 1

4.1 Vernal Pool Fairy Shrimp 1

4.1.1 Habitat Requirements and Life History Information 1

4.1.2 Critical Habitat and Project Context 1

4.1.3 Site Specific Limiting Factors for Recovery 1

4.2 Cook’s Lomatium 1

4.2.1 Biological Requirements and Life History Information 1

4.2.2 Critical Habitat and Project Context 1

4.2.3 Site Specific Limiting Factors for Recovery 1

4.3 Large-Flowered Woolly Meadowfoam 1

4.3.1 Biological Requirements and Life History Information 1

4.3.2 Critical Habitat and Project Context 1

4.3.3 Site Specific Limiting Factors for Recovery 1

5.0 Analysis of Effect of the Action 1

5.1 Impact Assessment 1

5.2 Data Sources Employed and Assessment Approach 1

5.3 GIS Analysis of Identified VPC Habitats in Relation to the Project Area and Action Area 1

5.4 Summary of Effects 1

5.4.1 Direct Effects 1

5.4.2 Indirect Effects 1

5.4.3 Estimate of Indirect Effects 1

5.5 Effect of the Proposed Action on Tribal Resources or Interests 1

5.6 Estimating Take 1

5.7 Off-Site Mitigation 1

5.8 Cumulative Effects 1

6.0 Avoidance, Minimization and Conservation Measures 1

6.1 Standard Specifications 1

6.2 Special Provisions Specifications 1

6.3 Non-Contractual Obligations and Agreements 1

6.3.1 General Practices 1

6.3.2 Native Plant and Weed Management 1

6.3.3 Herbicide Use 1

6.3.4 Vegetation Sampling 1

6.3.5 Fairy Shrimp Sampling 1

6.3.6 Listed Plant Seed Collection and Restoration Methodology 1

6.3.7 Grazing 1

6.4 Summary of Avoidance, Minimization and Conservation Measures 1

6.4.1 Avoidance and Minimization Measures 1

6.4.2 Conservation Recommendations 1

7.0 Finding of Effect 1

7.1 Vernal Pool Complex Habitats 1

7.1.1 Summary of Effects on Vernal Pool Fairy Shrimp 1

7.1.2 Summary of Effects on Cook’s Lomatium 1

7.1.3 Summary of Effects on Large-Flowered Woolly Meadowfoam 1

8.0 References 1

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