PHASE 1 ENVIRONMENTAL ASSESSMENT EAST CLEAR CREEK, COCONINO COUNTY, ARIZONA Resolution Copper Prepared for: Attn: Mary Morissette 102 Magma Heights Superior, Arizona 85173-2523 Project Number: 807.211 September 4, 2020 Date WestLand Resources, Inc. 4001 E. Paradise Falls Drive Tucson, Arizona 85712 5202069585 East Clear Creek, Coconino County, Arizona Phase 1 Environmental Assessment TABLE OF CONTENTS EXECUTIVE SUMMARY....................................................................................................................... ES-1 1. INTRODUCTION ................................................................................................................................... 1 1.1. Purpose ............................................................................................................................................... 1 1.2. Scope of Services .............................................................................................................................. 2 1.3. Limitations and Exceptions ............................................................................................................ 2 1.4. Special Terms and Conditions ........................................................................................................ 3 1.5. User Reliance ..................................................................................................................................... 3 1.6. Continued Viability ........................................................................................................................... 3 2. SITE DESCRIPTION ............................................................................................................................. 3 2.1. Location and Legal Description ..................................................................................................... 4 2.2. Site and Vicinity General Characteristics ...................................................................................... 4 2.3. Current Use of the Property ........................................................................................................... 4 2.4. Description of Structures, Roads, and Other Improvements on the Site ................................ 4 2.5. Current Uses of Adjoining Properties ........................................................................................... 4 3. USER PROVIDED INFORMATION................................................................................................. 5 3.1. Title Records ..................................................................................................................................... 5 3.2. Environmental Liens or Activity and Use Limitations ............................................................... 6 3.3. Specialized Knowledge .................................................................................................................... 6 3.4. Commonly Known or Reasonably Ascertainable Information ................................................. 6 3.5. Valuation Reduction for Environmental Issues ........................................................................... 6 3.6. Reason for Performing a Phase I ESA .......................................................................................... 6 3.7. Other .................................................................................................................................................. 7 4. RECORDS REVIEW ............................................................................................................................... 8 4.1. Environmental Record Sources ...................................................................................................... 8 4.2. Prior Environmental Reports ......................................................................................................... 8 4.3. Physical Setting .................................................................................................................................. 9 4.3.1. Soils ..................................................................................................................................... 10 4.3.2. Geology ............................................................................................................................... 10 4.3.3. Hydrology ........................................................................................................................... 11 4.3.4. Hydrogeology ..................................................................................................................... 11 4.4. Historical Use Information on the Property and Adjoining Properties ................................. 12 4.4.1. Historical Topographic Maps .......................................................................................... 13 4.4.2. Historical Aerial Photographs ......................................................................................... 13 4.4.3. Property Tax Files ............................................................................................................. 14 4.4.4. Local Street Directories .................................................................................................... 14 4.4.5. Sanborn Fire Insurance Maps ......................................................................................... 14 4.4.6. Other Historical Sources .................................................................................................. 14 5. SITE RECONNAISSANCE ................................................................................................................. 16 5.1. Methodology and Limiting Conditions ....................................................................................... 16 5.2. Indications of Past Uses of the Property .................................................................................... 17 5.3. Exterior Observations .................................................................................................................... 17 5.3.1. Hazardous Substances and Petroleum Product Containers in Connection with Identified Uses ................................................................................ 17 WestLand Resources, Inc. ii Q:\Jobs\800's\807.211\ENV\Ph_I_ESAs\E_Clear_Crk\20200904_Submittal\20200904_Ph I_ESA_EastClear_Crk.docx East Clear Creek, Coconino County, Arizona Phase 1 Environmental Assessment 5.3.2. Hazardous Substance and Petroleum Product Containers Not in Connection with Identified Uses ....................................................................... 17 5.3.3. Storage Tanks (Aboveground and Underground) ........................................................ 17 5.3.4. Unidentified Substance Containers ................................................................................ 17 5.3.5. Drums ................................................................................................................................. 17 5.3.6. Odors .................................................................................................................................. 18 5.3.7. Pools of Liquid, Pits, Ponds, or Lagoons ...................................................................... 18 5.3.8. Wastewater ......................................................................................................................... 18 5.3.9. Septic Systems .................................................................................................................... 18 5.3.10. Wells .................................................................................................................................... 18 5.3.11. Stained Soil or Pavement ................................................................................................. 18 5.3.12. Stressed Vegetation ........................................................................................................... 18 5.3.13. Solid Waste Disposal ........................................................................................................ 18 5.3.14. PCB Equipment ................................................................................................................ 19 5.4. Interior Observations ..................................................................................................................... 19 6. INTERVIEWS ........................................................................................................................................ 20 6.1. Interview with Owner .................................................................................................................... 20 6.2. Interviews with Occupants ............................................................................................................ 20 6.3. Interviews with Local Government Officials ............................................................................. 20 6.4. Interviews with Others .................................................................................................................. 20 7. FINDINGS AND OPINIONS ............................................................................................................ 21 8. CONCLUSION ....................................................................................................................................... 24 9. DEVIATIONS .......................................................................................................................................