Preliminary Assessments and Site Inspections Report Upper Columbia River Mines and Mills Stevens County, Washington TDD: 01-02-0028 Contract: 68-S0-01-01 October 2002 Region 10 START-2 Superfund Technical Assessment and Response Team Submitted To: Monica Tonel, Task Monitor United States Environmental Protection Agency 1200 Sixth Avenue Seattle, Washington 98101 ------- PRELIMINARY ASSESSMENTS AND SITE INS PEC HONS REPORT UPPER COLUMBIA RIVER MINES AND MILLS STEVENS COUNTY, WASHINGTON TABLE O F C O NTENTS Section Page 1. INTRODUCTION 1-1 2. BACKGROUND 2-1 2.1 MINE/MILL OWNERSHIP 2-1 2.2 REGIONAL OPERATIONS AND WASTE CHARACTERISTICS 2-1 2.2.1 Historic Mining 2-1 3. FIELD ACTIVITIES AND ANALYTICAL PROTOCOL 3-1 3 .1 SAMPLING METHODOLOGY 3-2 3.1.1 EPA CLP Surface Soil Samples 3-2 3.1.2 EPA CLP Sediment Samples 3-3 3.1.3 EPA CLP Surface Water Samples 3-3 3.2 ANALYTICAL PROTOCOLS 3-3 3 .3 GLOBAL POSITIONING SYSTEM 3-3 3.4 INVESTIGATION-DERIVED WASTE 3-4 4. QUALITY ASSURANCE/QUALITY CONTROL 4-1 4.1 SATISFACTION OF DATA QUALITY OBJECTIVES 4-2 4.2 QUALITY ASSURANCE/QUALITY CONTROL SAMPLES 4-2 4.3 PROJECT-SPECIFIC DATA QUALITY OBJECTIVES 4-3 4.3.1 Precision 4-3 4.3.2 Accuracy 4-3 4.3.3 Completeness 4-3 4.3.4 Representativeness 4-4 4.3.5 Comparability 4-4 4.4 LABORATORY QUALITY ASSURANCE/QUALITY CONTROL PARAMETERS 4-4 4.4.1 Holding Times 4-4 4.4.2 Laboratory Blanks 4-4 5. ANALYTICAL RESULTS REPORTING AND BACKGROUND SAMPLES 5-1 5 .1 ANALYTICAL RESULTS EVALUATION CRITERIA 5-1 5.2 BACKGROUND SAMPLES 5-3 5.2.1 Background Surface Soil 5-3 5.2.1.1 Sample Locations 5-3 5.2.1.2 Sample Results 5-4 5.2.2 Background Sediment 5-4 5.2.2.1 Sample Locations 5-4 5.2.2.2 Sample Results 5-5 10:START-2\01020028\S759 1 ------- TABLE OF CONTENTS (CONTINUED) Section Page 6. MINES AND MILLS, LOCATIONS/DESCRIPTIONS, START-2 VISITS 6-1 6.1 DAISY MINE 6-1 6.1.1 Mine Location 6-1 6.1.2 Historical Information 6-1 6.1.3 Mine Description/Features 6-2 6.1.4 START-2 Mine Visit 6-2 6.1.5 Sampling Locations 6-2 6.1.6 Analytical Results 6-3 6.1.6.1 Surface Soil Sample Results 6-3 6.1.6.2 Surface Water Sample Results 6-3 6.1.6.3 Sediment Sample Results 6-3 6.2 L-BAR/NORTHWEST MAGNESITE 6-3 6.2.1 Plant Location 6-3 6.2.2 Historical Information 6-4 6.2.3 Plant Description/Features 6-5 6.2.4 ST ART-2 Visit 6-6 6.2.5 Sampling Locations 6-7 6.2.6 Analytical Results 6-7 6.2.6.1 Sediment Sample Results 6-7 6.3 NORTHWEST ALLOYS 6-8 6.3.1 Plant Location 6-8 6.3.2 Historical Information 6-8 6.3.3 Plant Description/Features 6-8 6.3.4 ST ART-2 Visit 6-11 6.3.5 Sampling Locations 6-11 6.3.6 Analytical Results 6-11 6.3.6.1 Sediment Sample Results 6-11 6.4 NAPOLEON MINE/MILL 6-11 6.4.1 Mine/Mill Location 6-11 6.4.2 Historical Information 6-12 6.4.3 Mine/Mill Description/Features 6-12 6.4.4 START-2 Mine/Mill Visit 6-12 6.4.5 Sampling Locations 6-13 6.4.6 Analytical Results 6-13 6.4.6.1 Surface Water Sample Results 6-13 6.4.6.2 Sediment Sample Results 6-13 6.5 FIRST THOUGHT MINE 6-13 6.5.1 Mine Location 6-13 6.5.2 Historical Information and Mine Description/Features 6-13 6.5.3 START-2 Mine Visit 6-14 6.6 LOTTIE MINE 6-14 6.6.1 Mine Location 6-14 6.6.2 Historical Information and Mine Description/Features 6-14 6.6.3 START-2 Mine Visit 6-15 10:START-2\01020028\S759 11 ------- TABLE OF CONTENTS (CONTINUED) Section Page 6.7 HOMESTAKENO. 1 MINE 6-15 6.7.1 Mine Location 6-15 6.7.2 Historical Information and Mine Description/Features 6-15 6.7.3 START-2 Mine Visit 6-16 6.8 ANTELOPE MINE 6-16 6.8.1 Mine Location 6-16 6.8.2 Historical Information and Mine Description/Features 6-16 6.8.3 START-2 Mine Visit 6-16 6.9 HUBBARD MINE 6-17 6.9.1 Mine Location 6-17 6.9.2 Historical Information and Mine Description/Features 6-17 6.9.3 START-2 Mine Visit 6-17 6.10 NEW LEADVILLE MINE 6-18 6.10.1 Mine Location 6-18 6.10.2 Historical Information and Mine Description/Features 6-18 6.10.3 START-2 Mine Visit 6-18 6.11 RJ. MINE 6-19 6.11.1 Mine Location 6-19 6.11.2 Historical Information and Mine Description/Features 6-19 6.11.3 START-2 Mine Visit 6-19 6.12 VAN STONE MINE/MILL 6-20 6.12.1 Mine/Mill Location 6-20 6.12.2 Historical Information 6-20 6.12.3 Mine/Mill Description/Features 6-21 6.12.4 START-2 Mine/Mill Visit 6-22 6.12.5 Sampling Locations 6-23 6.12.6 Analytical Results 6-25 6.12.6.1 Surface Soil Sample Results 6-25 6.12.6.2 Surface Water Sample Results 6-25 6.12.6.3 Sediment Sample Results 6-25 6.13 HOPE AND TWIN CABINS MINE 6-26 6.13.1 Mine Location 6-26 6.13.2 Historical Information and Mine Description/Features 6-26 6.13.3 START-2 Mine Visit 6-26 6.14 ST. CRISPIN MINE 6-27 6.14.1 Mine Location 6-27 6.14.2 Historical Information and Mine Description/Features 6-27 6.14.3 START-2 Mine Visit 6-27 6.15 NORTHPORT MILL 6-27 6.15.1 Mill Location 6-27 6.15.2 Historical Information and Mill Description/Features 6-28 6.15.3 EPA Visit 6-29 6.16 LEROI/NORTHPORT SMELTER 6-30 6.16.1 Smelter Location 6-30 6.16.2 Historical Information 6-30 10:START-2\01020028\S759 111 ------- TABLE OF CONTENTS (CONTINUED) Section Page 6.16.3 Smelter Description/Features 6-31 6.16.4 START-2 Smelter Visit 6-33 6.16.5 Sampling Locations 6-34 6.16.6 Analytical Results 6-34 6.16.6.1 Surface Soil Sample Results 6-34 6.16.6.2 Sediment Sample Results 6-35 6.17 BLACK ROCK MINE/MILL 6-35 6.17.1 Mine/Mill Location 6-35 6.17.2 Historical Information 6-36 6.17.3 Mine/Mill Description/Features 6-36 6.17.4 START-2 Mine/Mill Visit 6-36 6.17.5 Sample Locations 6-37 6.17.6 Analytical Results 6-37 6.17.6.1 Surface Soil Sample Results 6-37 6.18 GREAT WESTERN MINE 6-38 6.18.1 Mine Location 6-38 6.18.2 Historical Information 6-38 6.18.3 Mine Description/Features 6-38 6.18.4 START-2 Mine Visit 6-39 6.18.5 Sampling Locations 6-39 6.18.6 Analytical Results 6-39 6.18.6.1 Surface Soil Sample Results 6-39 6.19 LAST CHANCE MINE/MILL 6-40 6.19.1 Mine/Mill Location 6-40 6.19.2 Historical Information 6-40 6.19.3 Mine/Mill Description/Features 6-40 6.19.4 START-2 Mine/Mill Visit 6-41 6.19.5 Sampling Locations 6-41 6.19.6 Analytical Results 6-42 6.19.6.1 Surface Soil Sample Results 6-42 6.19.6.2 Surface Water Sample Results 6-43 6.19.6.3 Sediment Sample Results 6-43 6.20 DEEP CREEK MINE 6-43 6.20.1 Mine Location 6-43 6.20.2 Historical Information 6-43 6.20.3 Mine Description/Features 6-44 6.20.4 START-2 Mine Visit 6-44 6.20.5 Sampling Locations 6-45 6.20.6 Analytical Results 6-46 6.20.6.1 Surface Soil Sample Results 6-46 6.20.6.2 Surface Water Sample Results 6-47 6.21 COPPER KING MINE 6-47 6.21.1 Mine Location 6-47 6.21.2 Historical Information 6-47 6.21.3 Mine Description/Features 6-47 10:START-2\01020028\S759 IV ------- TABLE OF CONTENTS (CONTINUED) Section Page 6.21.4 START-2 Mine Visit 6-48 6.21.5 Sample Locations 6-48 6.21.6 Analytical Results 6-49 6.21.6.1 Surface Soil Sample Results 6-49 6.21.6.2 Surface Water Sample Results 6-49 6.21.6.3 Sediment Sample Results 6-49 6.22 SIERRA ZINC MINE/MILL 6-49 6.22.1 Mine/Mill Location 6-49 6.22.2 Historical Information 6-50 6.22.3 Mine/Mill Description/Features 6-50 6.22.4 START-2 Mine/Mill Visit 6-50 6.22.5 Sampling Locations 6-51 6.22.6 Analytical Results 6-52 6.22.6.1 Surface Soil Sample Results 6-52 6.22.6.2 Surface Water Sample Results 6-52 6.23 MAGMA MINE 6-52 6.23.1 Mine Location 6-52 6.23.2 Historical Information and Mine Description/Features 6-53 6.23.3 START-2 Mine Visit 6-53 6.24 FARMER MINE 6-53 6.24.1 Mine Location 6-53 6.24.2 Historical Information and Mine Description/Features 6-54 6.24.3 ST ART -2 Mine Visit 6-54 6.25 MAKI MINE 6-54 6.25.1 Mine Location 6-54 6.25.2 Historical Information and Mine Description/Features 6-54 6.25.3 START-2 Mine Visit 6-55 6.26 ELECTRIC POINT MINE/MILL 6-55 6.26.1 Mine/Mill Location 6-55 6.26.2 Historical Information 6-55 6.26.3 Mine/Mill Description/Features 6-55 6.26.4 START-2 Mine/Mill Visit 6-56 6.26.5 Sampling Locations 6-56 6.26.6 Analytical Results 6-57 6.26.6.1 Surface Soil Sample Results 6-57 6.27 GLADSTONE MINE/MILL 6-57 6.27.1 Mine/Mill Location 6-57 6.27.2 Historical Information 6-58 6.27.3 Mine/Mill Description/Features 6-58 6.27.4 START-2 Mine/Mill Visit 6-58 6.27.5 Sampling Locations 6-59 6.27.6 Analytical Results 6-59 6.27.6.1 Surface Soil Sample Results 6-59 6.28 LUCKY FOUR MINE 6-60 6.28.1 Mine Location 6-60 10:START-2\01020028\S759 V ------- TABLE OF CONTENTS (CONTINUED) Section Page 6.28.2 Historical Information and Mine Description/Features 6-60 6.28.3 START-2 Mine Visit 6-60 6.29 RED TOP MINE 6-60 6.29.1 Mine Location 6-60 6.29.2 Historical Information 6-61 6.29.3 Mine Description/Features 6-61 6.29.4 START-2 Mine Visit 6-61 6.29.5 Sample Locations 6-62 6.29.6 Analytical Results 6-62 6.29.6.1 Surface Soil Sample Results 6-62 6.30 ANDERSON CALHOUN MINE/MILL 6-62 6.30.1 Mine/Mill Location 6-62 6.30.2 Historical Information 6-62 6.30.3 Mine/Mill Description/Features 6-63 6.30.4 START-2 Mine/Mill Visit 6-63 6.30.5 Sampling Locations 6-65 6.30.6 Analytical Results 6-66 6.30.6.1 Surface Soil Sample Results 6-66 6.30.6.2 Surface Water Sample Results 6-66 6.30.6.3 Sediment Sample Results 6-67 6.31 LUCILE MINE 6-67 6.31.1 Mine Location 6-67 6.31.2 Historical Information and Mine Description/Features 6-67 6.31.3 START-2 Mine Visit 6-67 6.32 IROQUOIS MINE 6-68 6.32.1 Mine Location 6-68 6.32.2 Historical Information 6-68 6.32.3 Mine Description/Features 6-68 6.32.4 ST ART -2 Mine Visit 6-69 6.32.5 Sampling Locations 6-69 6.32.6 Analytical Results 6-70 6.32.6.1 Surface Soil Sample Results 6-70 6.32.6.2 Surface Water Sample Results 6-70 6.33 SILVER QUEEN MINE 6-70 6.33.1 Mine Location 6-70 6.33.2 Historical Information 6-70 6.33.3 Mine Description/Features 6-71 6.33.4 START-2 Mine Visit 6-71 6.34 MELROSE MINE 6-72 6.34.1 Mine Location 6-72 6.34.2 Historical Information 6-72 6.34.3 Mine Description/Features 6-72 6.34.4 START-2 Mine Visit 6-72 6.34.5 Sample Locations 6-73 6.34.6 Analytical Results 6-73 10:START-2\01020028\S759 VI ------- TABLE OF CONTENTS (CONTINUED) Section Page 6.34.6.1 Surface Water Sample Results 6-73 6.34.6.2 Sediment Sample Results 6-73 6.35 LAKEVIEW MINE 6-73 6.35.1 Mine Location 6-73 6.35.2 Historical Information and Mine Description/Features 6-74 6.35.3 START-2 Mine Visit 6-74 6.36 JACKSON MINE 6-74 6.36.1 Mine Location 6-74 6.36.2 Historical Information and Mine Description/Features 6-74 6.36.3 ST ART -2 Mine Visit 6-75 6.37 FRISCO-STANDARD MINE 6-75 6.37.1 Mine Location 6-75 6.37.2 Historical Information 6-75 6.37.3 Mine Description/Features 6-75 6.37.4 ST ART -2 Mine Visit 6-76 6.38 MYEERAH MINE 6-76 6.38.1 Mine Location 6-76 6.38.2 Historical Information and Mine Description/Features 6-76 6.38.3 START-2 Mine Visit 6-77 6.39 UNITED TREASURE MINE 6-77 6.39.1 Mine Location 6-77 6.39.2 Historical Information 6-77 6.39.3 Mine Description/Features 6-78 6.39.4 START-2 Mine Visit 6-78 7. EPA CLP ANALYTICAL RESULTS, SURFACE WATER MIGRATION/EXPOSURE PATHWAYS, AND TARGETS 7-1 7.1 DAISY MINE 7-1 7.1.1 Surface Water Pathway Description 7-1 7.2 L-BAR/NORTHWEST MAGNESITE 7-2 7.2.1 Surface Water Pathway Description 7-2 7.3 NORTHWEST ALLOYS 7-3 7.3.1 Surface Water Pathway Description 7-3 7.4 NAPOLEON MINE/MILL 7-4 7.4.1 Surface Water Pathway Description 7-4 7.5 VAN STONE MINE/MILL 7-5 7.5.1 Surface Water Pathway Description 7-5 7.6 LEROI/NORTHPORT SMELTER 7-8 7.6.1 Surface Water Pathway Description 7-8 7.6.2 Soil Exposure Pathway Description 7-9 7.7 BLACK ROCK MINE/MILL 7-9 7.7.1 Surface Water Pathway Description 7-9 7.8 GREAT WESTERN MINE 7-10 7.8.1 Surface Water Pathway Description 7-10 7.9 LAST CHANCE MINE/MILL 7-10 10:START-2\01020028\S759 vii ------- TABLE OF CONTENTS (CONTINUED) Section Page 7.9.1 Surface Water Pathway Description 7-10 7.10 DEEP CREEK MINE 7-11 7.10.1 Surface Water Pathway Description 7-11 7.10.2 Soil Exposure Pathway Description 7-13 7 .11 COPPER KING MINE 7-13 7.11.1 Surface Water Pathway Description 7-13 7.12 SIERRA ZINC MINE/MILL 7-14 7.12.1 Surface Water Pathway Description 7-14 7.13 ELECTRIC POINT MINE/MILL 7-16 7.13.1 Surface Water Pathway Description 7-16 7.14 GLADSTONE MINE/MILL 7-17 7.14.1 Surface Water Pathway Description 7-17 7.15 RED TOP MINE 7-18 7.15.1 Surface Water Pathway Description 7-18 7.16 ANDERSON CALHOUN MINE/MILL 7-18 7.16.1 Surface Water Pathway Description 7-18 7.17 IROQUOIS MINE 7-21 7.17.1 Surface Water Pathway Description 7-21 7.18 MELROSE MINE 7-22 7.18.1 Surface Water Pathway Description 7-22 7.19 TRIBUTARIES 7-23 7.20 TARGETS 7-25 7.21 SAMPLE LOCATIONS 7-31 7.22 SAMPLE RESULTS 7-32 8. SUMMARY AND CONCLUSIONS 8-1 8 .1 FINDINGS AND CONCLUSIONS 8-1 8.1.1 Daisy Mine 8-1 8.1.2 L-Bar/Northwest Magnesite 8-2 8.1.3 Northwest Alloys 8-3 8.1.4 Napoleon Mine/Mill 8-3 8.1.5 Van Stone Mine/Mill 8-4 8.1.6 LeRoi/Northport Smelter 8-4 8.1.7 Black Rock Mine/Mill 8-5 8.1.8 Great Western Mine 8-5 8.1.9 Last Chance Mine/Mill 8-6 8.1.10 Deep Creek Mine 8-6 8.1.11 Copper King Mine 8-6 8.1.12 Sierra Zinc Mine/Mill 8-7 8.1.13 Electric Point Mine/Mill 8-7 8.1.14 Gladstone Mine/Mill 8-7 8.1.15 RedTopMine 8-8 8.1.16 Anderson Calhoun Mine/Mill 8-8 8.1.17 Iroquois Mine 8-8 8.1.18 Melrose Mine 8-9 10:START-2\01020028\S759 Vlll ------- TABLE OF CONTENTS (CONTINUED) Section Page 9. REFERENCES 9-1 10:START-2\01020028\S759 IX ------- LIST OF APPENDICES A PHOTOGRAPHIC DOCUMENTATION B START-2 AND EPA LOGBOOKS C GLOBAL POSITIONING SYSTEM COORDINATES D DATA QUALITY ASSURANCE REVIEW MEMORANDUMS AND ANALYTICAL DATA FORMS E KETTLE RIVER F LEROI/NORTHPORT SMELTER HISTORICAL SITE MAPS G NORTHPORT CITY WELLS ANALYTICAL RESULTS H WESTON'S TRIP REPORT I CITY OF ADDY MUNICIPAL WATER SUPPLY WELLS ANALYTICAL RESULTS 10:START-2\01020028\S759 XI ------- LIST OF TABLES Table Page 1-1 Mines and Mills 1-4 3-1 Sample Collection and Analytical Summary 3-5 5-1 Surface Soil Background Samples Analytical Results Summary 5-6 5-2 Sediment Background Samples Analytical Results Summary 5-9 5-3 WESTON's Surface Soil and Sediment Background Samples Analytical Results Summary 5-12 6-1 Daisy Mine Surface Soil Samples Analytical Results Summary 6-79 6-2 Daisy Mine Sediment Samples Analytical Results Summary 6-80 6-3 L-Bar/Northwest Magnesite Sediment Samples Analytical Results Summary 6-81 6-4 Northwest Alloys Sediment Samples Analytical Results Summary 6-82 6-5 Napoleon Mine/Mill Sediment Samples Analytical Results Summary 6-83 6-6 Van Stone Mine/Mill Surface Soil Samples Analytical Results Summary 6-84 6-7 Van Stone Mine/Mill Sediment Samples Analytical Results Summary 6-93 6-8 LeRoi/Northport Smelter Surface Soil Samples Analytical Results Summary 6-95 6-9 LeRoi/Northport Smelter Sediment Samples Analytical Results Summary 6-96 6-10 LeRoi/Northport Smelter Sediment Sample Analytical Results Summary 6-97 6-11 Black Rock Mine/Mill Surface Soil Samples Analytical Results Summary 6-98 6-12 Great Western Mine Surface Soil Samples Analytical Results Summary 6-100 6-13 Last Chance Mine/Mill Surface Soil Samples Analytical Results Summary 6-101 6-14 Last Chance Mine/Mill Sediment Samples Analytical Results Summary 6-103 6-15 Deep Creek Mine Surface Soil Samples Analytical Results Summary 6-104 6-16 Copper King Mine Surface Soil Samples Analytical Results Summary 6-108 6-17 Copper King Mine Sediment Samples Analytical Results Summary 6-109 6-18 Sierra Zinc Mine/Mill Surface Soil Samples Analytical Results Summary 6-110 6-19 Electric Point Mine/Mill Surface Soil Samples Analytical Results Summary 6-115 6-20 Gladstone Mine/Mill Surface Soil Samples Analytical Results Summary 6-118 6-21 Red Top Mine Surface Soil Samples Analytical Results Summary 6-120 6-22 Anderson Calhoun Mine/Mill Surface Soil Samples Analytical Results Summary 6-121 6-23 Anderson Calhoun Mine/Mill Sediment Samples Analytical Results Summary 6-123 10:START-2\01020028\S759 Xlll ------- LISTOF TABLES (CONTINUED) Table Page 6-24 Iroquois Mine Surface Soil Samples Analytical Results Summary 6-124 6-25 Melrose Mine Sediment Samples Analytical Results Summary 6-125 7-1 Probable Point of Entry Locations 7-33 7-2 L-Bar/Northwest Magnesite Ditch Sediment Samples Analytical Results Summary 7-34 7-3 L-Bar/Northwest Magnesite River Sediment Samples Analytical Results Summary 7-35 7-4 Northwest Alloys Creek Sediment Samples Analytical Results Summary 7-36 7-5 Northwest Alloys River Sediment Samples Analytical Results Summary 7-37 7-6 Deep Creek Mine Sediment Samples Analytical Results Summary 7-38 7-7 Anderson Calhoun Mine/Mill Sediment Samples Analytical Results Summary 7-39 8-1 CERCLA Recommendations 8-10 10:START-2\01020028\S759 XIV ------- LIST OF FIGURES Figure Page 1-1 Upper Columbia River Project Area 1-5 1-2 Lake Roosevelt Drainage Basin 1-6 1-3 Mines and Mills Locations Lower Project Area 1-7 1-4 Mines and Mills Locations Upper Project Area 1-9 5-1 Surface Soil Background Sample Location Map 5-13 6-1 Daisy Mine Site Map 6-126 6-2 Daisy Mine Sample Location Map 6-127 6-3 L-Bar/Northwest Magnesite Site Map 6-129 6-4 L-Bar/Northwest Magnesite Sample Location Map 6-131 6-5 Northwest Alloys Site Map 6-133 6-6 Northwest Alloys Sample Location Map 6-135 6-7 Napoleon Mine/Mill Site Map 6-137 6-8 Napoleon Mine/Mill Sample Location Map 6-138 6-9 Van Stone Mine/Mill Site Map 6-139 6-10 Van Stone Mine/Mill Site Map 6-141 6-11 Van Stone Mine/Mill Site Map 6-143 6-12 Van Stone Mine/Mill Sample Location Map 6-145 6-13 Van Stone Mine/Mill Sample Location Map 6-147 6-14 Van Stone Mine/Mill Sample Location Map 6-149 6-15 Northport Smelter Site Map 6-151 6-16 LeRoi/Northport Smelter Map 6-153 6-17 LeRoi/Northport Smelter Sample Location Map 6-155 6-18 Sampling Site Locations in Lake Roosevelt and the Upper Columbia River - May 2001 6-157 6-19 Black Rock Mine/Mill Site Map 6-158 6-20 Black Rock Mine/Mill Sample Location Map 6-159 6-21 Great Western Mine Site Map 6-160 6-22 Great Western Mine Sample Location Map 6-161 6-23 Last Chance Mine/Mill Site Map 6-162 10:START-2\01020028\S759 XV ------- LIST OF FIGURES (CONTINUED) Figure Page 6-24 Last Chance Mine/Mill Sample Location Map 6-163 6-25 Deep Creek Mine Site Map 6-164 6-26 Deep Creek Mine Sample Location Map 6-165 6-27 Copper King Mine Site Map 6-166 6-28 Copper King Mine Sample Location Map 6-167 6-29 Sierra Zinc Mine/Mill Site Map 6-168 6-30 Sierra Zinc Mine/Mill Sample Location Map 6-169 6-31 Electric Point Mine/Mill Site Map 6-170 6-32 Electric Point Mine/Mill Sample Location Map 6-171 6-33 Gladstone Mine/Mill Site Map 6-172 6-34 Gladstone Mine/Mill Sample Location Map 6-173 6-35 Red Top Mine Site Map 6-174 6-36 Red Top Mine Sample Location Map 6-175 6-37 Anderson Calhoun Mine/Mill Site Map 6-177 6-38 Anderson Calhoun Mine/Mill Sample Location Map 6-179 6-39 Iroquois Mine Site Map 6-181 6-40 Iroquois Mine Sample Location Map 6-182 6-41 Melrose Mine Site Map 6-183 6-42 Melrose Mine Sample Location Map 6-184 7-1 Daisy Mine 15-Mile Map 7-41 7-2 L-Bar/Northwest Magnesite 15-Mile Map 7-43 7-3 Northwest Alloys 15-Mile Map 7-45 7-4 Napoleon Mine/Mill 15-Mile Map 7-47 7-5 Van Stone Mine/Mill 15-Mile Map 7-49 7-6 LeRoi/Northport Smelter 15-Mile Map 7-51 7-7 Black Rock Mine/Mill 15-Mile Map 7-53 7-8 Great Western Mine 15-Mile Map 7-55 7-9 Last Chance Mine/Mill 15-Mile Map 7-57 7-10 Deep Creek Mine 15-Mile Map 7-59 10:START-2\01020028\S759 XVI ------- LIST OF FIGURES (CONTINUED) Figure Page 7-11 Copper King Mine 15-Mile Map 7-61 7-12 Sierra Zinc Mine/Mill 15-Mile Map 7-63 7-13 Electric Point Mine/Mill 15-Mile Map 7-65 7-14 Gladstone Mine/Mill 15-Mile Map 7-67 7-15 Red Top Mine 15-Mile Map 7-69 7-16 Anderson Calhoun Mine/Mill 15-Mile Map 7-71 7-17 Iroquois Mine 15-Mile Map 7-73 7-18 Melrose Mine 15-Mile Map 7-75 10:START-2\01020028\S759 XVII ------- LIST OF ACRONYMS Acronvm Definition AST aboveground storage tank bgs below ground surface CERCLA Comprehensive Environmental Response, Compensation, and Liability Act CES Cascade Earth Sciences CLP Contract Laboratory Program cfs cubic feet per second COCs contaminants of concern CRM Casting Residue Mound CRDL Contract Required Detection Limit CRQL Contract Required Quantitation Limit DNR Washington State Department of Natural Resources DQOs data quality objectives E&E Ecology and Environment, Inc. Ecology Washington State Department of Ecology EPA United States Environmental Protection Agency ESAT Environmental Services Assistance Tearn ESP electrostatic precipitate gpm gallons per minute GPS global positioning system HDPE high-density polyethylene HRS Hazard Ranking System IDW investigation-derived waste Lake RooseveltFranklin D. Roosevelt Lake jjg/L micrograms per liter mg/kg milligrams per kilogram msl mean sea level MS/MSD matrix spike/matrix spike duplicate NW Northwest PAs preliminary assessments pesticide/PCBs chlorinated pesticide/poly chlorinated biphenyls 10:START-2\01020028\S759 XIX ------- Acronym PPE QA/QC %R RCRA RI RPD Sis SOW SQAP SQL SVOCs START TAL TDD TDL TM TOC WESTON XRF LIST OF ACRONYMS (CONTINUED) Definition probable point of entry quality assurance/quality control percent recovery Resource Conservation and Recovery Act remedial investigation relative percent difference site investigations statement of work sampling and quality assurance plan sample quantitation limit semivolatile organic compounds Superfund Technical Assessment and Response Tearn Target Analyte List Technical Direction Document target distance limit Task Monitor total organic carbon Roy F. Weston, Inc. X-ray fluorescence 10:START-2\01020028\S759 XX ------- PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS REPORT UPPER COLUMBIA RIVER MINES AND MILLS STEVENS COUNTY, WASHINGTON 1. INTRODUCTION The United States Environmental Protection Agency (EPA) has tasked Ecology and Environment, Inc. (E & E) to provide technical support in investigating potential sources of contamination to the upper Columbia River project area. The upper Columbia River project area is defined for this investigation as the portion of the Columbia River beginning at approximately river mile (RM) 675 near Inchelium, Washington, extending upstream to the U.S.-Canada border at approximately RM 745 (Figure 1-1). The Columbia River is the principal inflowto Lake Roosevelt and contributes about 90 percent of the flow from a large drainage area in Canada and the United States (Figure 1-2). Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) activities conducted for this project included preliminary assessments (PAs) and site investigations (Sis) for 39 mine and mill sites in Stevens County, Washington (Figures 1-3 and 1-4). The PAs and Sis were conducted under the authority of CERCLA of 1980 as amended by the Superfund Amendments and Reauthorization Act of 1986. A list of the 39 mine and mill sites visited in Stevens County are presented in Table 1 -1. Table 1-1 identifies mine and mill sites which the Confederated T ribes of the Colville Reservation petitioned the EPA for assessment under CERCLA (Cawston 1999; Passmore 2000). The remaining mine and mill sites listed in T able 1-1 were identified by the EPA based on the location of the mine and/or mill relative to tributaries that empty into the upper Columbia River (project area) and available information regarding volume of ore produced. A detailed discussion of related field activities conducted at 21 mine and mill sites visited in Pend Oreille County can be found in the Lower Pend Oreille River Mines and Mills Preliminary Assessments and Site Investigations Report prepared by E & E for EPA, dated April 2002. The PAs and Sis are phases in the site assessment process for determining whether a site has released, is releasing, or has the potential to release, hazardous substances, pollutants, or contaminants into the environment and whether it requires further detailed investigation and/or response action that is authorized by CERCLA. The assessment process does not include extensive or complete site characterization, contaminant fate determination, or quantitative risk assessment. 10:START-2\01020028\S759 1-1 ------- The objectives of the PAs and Sis are to: Identify potential sources of contamination to the upper Columbia River project area; Determine whether the mines or mills are releasing, or have the potential to release hazardous constituents into the environment; Document the threat or potential threat to public health or the environment posed by the mines or mills; Assess the need for additional detailed investigation and/or response action at the mines or mills; and Determine the potential for placement of each mine or mill on the National Priorities List. Field activities were conducted through a combined effort involving Superfund Technical Assessment and Response Tearn (START)-2 contractor firms, E & E and Roy F. Weston, Inc. (WESTON). Sampling activities were conducted at 18 of the 39 mine and mill sites visited in Stevens County. E & E conducted sampling at mines and mills where potential sources of contamination were identified and possible impacts to receptors via the surface water migration pathway were observed. In addition, the soil exposure pathway was evaluated for the Deep Creek Mine and the LeRoi/Northport Smelter. E & E activities were conducted under START-2 Contract No. 68-S0-01-01 andTechnical Direction Document (TDD) No. 01-02-0028. WESTON collected sediment samples in tributaries to the upper Columbia River and mine and mill-specific background samples as determined necessary by the EPA. WESTON activities were conducted under START-2 Contract No. 68-S0-01-02 andTDD No. 01-02-001-A. Activities conducted as part of this investigation include reviewing existing mine and mill-specific information, regional characteristics, collecting receptor information within the mine or mill's range of influence, conducting visits to the mine and mill sites, executing the sampling plan, and producing this report. In accordance with the sampling and quality assurance plan (SQAP), attempts were made to conduct in-situ field screening of metals concentrations at potential contaminant sources using X-ray fluorescence (XRF) equipment. Due to field conditions, the instruments exceeded operating temperatures on several occasions. It was determined that the equipment was not able to function properly in a high temperature environment and its use was discontinued. A memo presenting the results of the limited XRF screening conducted is included in Appendix D. 10:START-2\01020028\S759 1-2 ------- Section 2 of this document includes a discussion of the regional operations and waste characteristics. Section 3 provides a description of the field activities conducted by E & E and WESTON. Quality assurance/quality control (QA/QC) criteria are included in Section 4. Reporting criteria, reporting methods, and background sample analytical results are discussed in Section 5. Mine and mill locations, descriptions, and START-2 site visits are discussed in Section 6. Section 7 provides a discussion of contaminant sources, potential targets/receptors and sampling results associated with each mine and mill site sampled. Mine/mill-specific findings and recommendations are summarized in Section 8. References are provided in Section 9. Photographic documentation is provided in Appendix A. Copies of START-2 and EPA logbooks are provided in Appendix B. Global positioning system (GPS) coordinates are provided in Appendix C. Data quality assurance review memorandums and analytical data forms are provided in Appendix D. The data for the samples collected in the Kettle River are provided in Appendix E. Historical site maps of LeRoi/Northport Smelter are provided in Appendix F. The Northport city wells analytical data are provided in Appendix G. The trip report prepared by WESTON is provided in Appendix H. The analytical results of routine monitoring at the City of Addy municipal water supply wells is provided in Appendix I. 10:START-2\01020028\S759 1-3 ------- Table 1-1 MINES AND MILLS VISITED UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON Mine/Mill Name Latitude Longitude S T R Daisy Mine 48 22 45.80 118 4 42.60 7 33N 38E L-Bar/Northwest Magnesite* 48 15 21.94 117 43 6.25 23 32N 40E Northwest Alloys* 48 21 26.00 117 50 54.00 14 33N 39E Napoleon Mine/Mill* 48 44 12.10 118 06 4.32 3 37N 37E First Thought Mine* 48 53 2.04 118 09 32 18 39N 37E Lottie Mine 48 51 53.28 118 01 15.24 19 39N 38E HomestakeNo. 1 Mine 48 52 06.96 118 01 18.84 19 39N 38E Antelope Mine 48 52 04.80 118 01 05.88 19-20 39N 38E Hubbard Mine 48 55 15.96 117 52 03.72 32 40N 39E New Leadville Mine 48 44 08.52 117 52 33.60 3 37N 39E R.J. Mine 48 43 54.84 117 52 31.80 3 37N 39E Van Stone Mine/Mill* 48 45 38.16 117 45 23.76 33 38N 40E Hope and Twin Cabins Mine 48 53 09.96 118 01 37.92 7 and 18 39N 38E St. Crispin Mine* 48 56 30.99 117 47 7.47 25 40 N 39E Northport Mill* 48 56 31.08 117 45 15.66 29 40 N 40E LeRoi/Northport Smelter* 48 55 23.16 117 46 02.28 33 40N 40E Black Rock Mine/Mill 48 52 13.45 117 42 22.12 24 39N 40E Great Western Mine 48 52 06.24 117 41 48.48 24 39N 40E Last Chance Mine/Mill* 48 51 59.40 117 41 56.40 24 39N 40E Deep Creek Mine* 48 51 48.96 117 42 54.36 26 39N 40E Copper King Mine 48 46 51.60 117 39 12.24 20 38N 41E Sierra Zinc Mine/Mill* 48 46 28.20 117 40 06.24 20 38N 41E Magma Mine 48 46 00.48 117 38 25.08 28 38N 41E Farmer Mine 48 50 59.28 117 37 17.40 34 39N 41E Maki Mine 48 50 45.60 117 36 00.00 35 39N 41E Electric Point Mine/Mill* 48 52 56.28 117 32 29.04 17-18 39N 42E Gladstone Mine/Mill* 48 53 12.48 117 32 35.16 18 39N 42E Lucky Four Mine 48 52 51.60 117 32 33.00 18 39N 42E Red Top Mine 48 56 35.88 117 33 52.20 25 40N 41E Anderson Calhoun Mine/Mill* 48 55 09.84 117 35 28.68 2 39N 41E Lucile Mine 48 57 01.08 117 33 12.24 30 40N 42E Iroquois Mine 48 57 06.12 117 32 22.92 30 40N 42E Silver Queen Mine 48 32 56.90 118 06 57.60 11 35N 37E Melrose Mine 48 56 44.52 117 38 45.96 28 40N 41E Lakeview Mine 48 57 51.84 117 32 57.12 19 40N 42E Jackson Mine 48 57 35.64 117 34 08.04 24 40N 41E Frisco-Standard Mine 48 59 34.80 117 26 39.48 12 40N 42E Myeerah Mine 48 59 26.16 117 27 14.76 11 40N 42E United Treasure Mine 48 59 21.48 117 27 51.12 11 40N 42E Source: Maptech, 2001, Andover, Massachusetts. * Mine/mill sites petitioned by The Colville Confederated Tribes to the EPA for assessment under CERCLA. Key: CERCLA = Comprehensive Environmental Response, Compensation, and Liability Act of 1980 EPA = United States Environmental Protection Agency. S = Section. T = Township. R = Range. E = East. N = North. RM = River mile. TDL = Target Distance Limit. 1-4 Page 1 of 1 ------- 2. BACKGROUND 2.1 MINE/MILL OWNERSHIP Property owners and/or representatives for the mines/mills visited are identified in Section 6. Consent for access to each mine and mill sites visited was obtained prior to conducting the visits. 2.2 REGIONAL OPERATIONS AND WASTE CHARACTERISTICS 2.2.1 Historic Mining The mining district surrounding the towns of Colville, Chewelah, Addy, and Northport in Stevens County, Washington dates back to the 1880s (Battien 1998). Stevens County's Embry Camp is the oldest mining district in the state. The Chewelah mining district was one of the earliest to be discovered and put into production. Stevens County produced the most gold in the state of Washington from 1905 to 1908 and again in 1922. The county led the state in the number of producing mines in 1928. By 1962, a geological survey stated that Stevens County produced half of the minerals of the state of Washington. (Battien 1998) 2-1 ------- 3. Mi l l) ACTIVITIES AND ANALYTICAL PROTOCOL A SQAP for the upper Columbia River PAs and Sis was developed by the START-2 prior to performing the field sampling (E & E 2001). The SQAP describes the sampling strategy, sampling methodology, and analytical program used to identify potential hazardous substance source areas and impacts to potential targets. With few exceptions, field activities were conducted in accordance with the approved SQAP. Deviations from the SQAP are described when applicable. Field activities were conducted in coordination with United States Department of the Interior Bureau of Land Management, United States Department of Agriculture Forest Service, and Washington State Department of Ecology (Ecology) staff. The field event was conducted from June 17 to 30 and September 9 to 15, 2001. Sampling was conducted at 18 of the 39 mines and mills visited. Sampling was conducted at those mines and mills where potential sources of contamination were identified and where possible impacts to receptors via the surface water migration pathway were observed. In addition, the soil exposure pathway was evaluated for the Deep Creek Mine and the LeRoi/Northport Smelter. Possible receptors of contamination that were identified were also sampled. As described in the SQAP, potential contaminant sources may include tailings piles/ponds, waste rock piles, adits, and stained soil areas surrounding improperly stored or disposed drums and containers. Potential receptors/targets may include wetland areas, fisheries, surface water intakes, sensitive environments, etc. as defined in the EPA Hazard Ranking System (HRS); Final Rule. The contaminants of concern (COCs) include T arget Analyte List (T AL) metals, chlorinated pesticide/poly chlorinated biphenyls (pesticide/PCBs), and semivolatile organic compounds (SVOCs). Total organic carbon (TOC) data was also collected for sediment samples. A total of 203 soil/sediment samples and 13 surface water samples were collected by E & E and analyzed under the EPA Contract Laboratory Program (CLP) for TAL metals. Sixty-eight soil/sediment and two surface water samples were also analyzed under the EPA CLP for pesticide/PCBs. Thirty- four soil/sediment and two surface water samples, were analyzed for SVOCs. A total of 20 sediment samples were submitted to a commercial laboratory for TOC analysis. WESTON collected a total of 10:START-2\01020028\S759 3-1 ------- 120 sediment samples and 5 surface water samples. Table 3-1 provides a summary of sample collection information. Sample types and the methods of collection are described below. A discussion of sample results is contained in Sections 6 and 7. Photographic documentation of the PAs and Sis field activities are contained in Appendix A. Information pertinent to WESTON's related sampling activities involving the collection of mine and mill-specific background samples is included in Appendix H. 3.1 SAMPLING MEfflO DO LOGY Sampling for surface soil, surface water, and sediment followed the standard operating procedures contained in Appendix A of the SQAP (E & E 2001). Grass, leaves and other vegetative material, rocks and other debris unsuitable for analysis were removed from soil samples before being placed into the sampling containers. Surface soil and sediment samples were homogenized in dedicated plastic bowls (except for pesticide/PCBs analysis) prior to placement in sample jars. Dedicated plastic spoons and scoops were used to extract, homogenize, and place sample material into sample containers (except for pesticide/PCBs analysis). Dedicated steel bowls and steel spoons were used for the collection and homogenization of pesticide/PCBs samples. Water samples were collected by hand dipping a 1-liter polyethylene bottle sample container into the water at well-mixed locations within the stream, or by using an unused sample container as a scoop to obtain water samples in areas of low flow. An aliquot of each sample was tested in the field for temperature and pH. After preservation, pH was checked again to ensure that the appropriate pH level had been achieved. All samples were stored on ice in coolers continuously maintained under chain-of-custody. Vehicles were locked if the sampling team had to walk out of visual range. Sample coolers from all teams were moved into a single occupied location (motel room) each evening to ensure custody control and to re-ice as needed. 3.1.1 EPA CLP Surface Soil Samples A total of 159 surface soil samples, including 9 background samples, were collected. Soil samples were discrete grab samples collected from potential source and background areas. Surface soil samples were collected from 0 to 6 inches below ground surface (bgs). Samples were analyzed for T AL 10:START-2\01020028\S759 3-2 ------- metals. A portion of samples also were analyzed for pesticide/PCBs (42 samples) and SVOCs (12 samples). 3.1.2 EPA CLP Sediment Samples A total of 44 sediment samples, including 9 background samples, were collected as outlined in the text of the SQAP (E & E 2001). Sediment samples were collected from below the apparent water line from 0 to 8 inches below the sediment surface in order from most downstream locations to most upstream locations. Samples were analyzed for T AL metals. Twenty-six samples also were analyzed for pesticide/PCBs, SVOCs (22 samples), andTOC (20 samples). 3.1.3 EPA CLP Surface Water Samples A total of 13 surface water samples were collected prior to collecting co-located sediment samples and from the most downstream locations to the most upstream locations. Water samples were analyzed for TAL metals. A portion of samples also were analyzed for pesticide/PCBs (two samples) and SVOCs (two samples). 3.2 ANALYTICAL PRO TO COLS All samples collected were shipped off-site for chemical analysis, with the exception of field measurement for pH. Analytical methods applied to E & E samples consisted of: EPA CLP TAL metals, EPA CLP pesticide/PCBs, EPA CLP SVOCs, and EPA SW-846 TOC. These analyses were applied to samples collected from suspected sources or targets in varying combinations based on the SQAP. Laboratories performing the analyses are noted in Section 4. Analysis applied to mine and mill-specific background samples collected by WEST ON were based on the approved SQAP; Upper Columbia River/Lake Roosevelt Expanded Site Inspection Sampling and Quality Assurance Plan, TDD No. 01-02-0001-A, EPA Contract: 68-S0-01-02, prepared for the EPA Region 10 by WESTON, May 2001. 3.3 GLOBAL POSITIONING SYSTEM Trimble Pathfinder Professional XL GPS survey units and data loggers were used by the START-2 to approximate the horizontal location coordinates of sample points. Except as noted for specific sample locations, the units provided three-dimensional differentially-corrected sample coordinates with ± 1 meter accuracy. Due to the combination of the mountainous terrain and limited 10:START-2\01020028\S759 3-3 ------- satellite coverage over this area, the GPS units were often operating in no more than two-dimensional mode. Sample coordinates were plotted onto a digitized map and then incorporated into geographic information system databases to develop a station/sample location map. The ST ART-2 was not able to obtain accurate GPS coordinates at some locations due to mountainous terrain. These station locations were estimated on the sample location map based on field observations. GPS coordinates by sample point are provided in Appendix C. WEST ON GPS coordinates are found in Appendix H. 3.4 INVESTIGATION-DERIVED WASTE Investigation-derived waste (IDW) generated during the sampling effort consisted of used personal protective clothing and disposable sampling equipment. IDW was disposed of as non-hazardous solid waste at a municipal landfill. No IDW generated by the ST ART-2 remains in the project area. 10:START-2\01020028\S759 3-4 ------- Table 3-1 SAMPLE COLLECTION AND ANALYTICAL SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID E & E Sample ID Station Location ID CLP Organic No. CLP Inorganic No. Matrix Depth Sampler Date Time TAL Metals Pesticide/ PCBs roc VOCs SVOCs Description Daisy Mine 01374161 01090426 DTPP01SD J0KH0 MJ0KH0 SD 0-6 HZ 09/10/01 15:55 X X X Sand 50%, silt 40%, gravel 10%. All subangular, light gray to brown, trace organics. 01374162 NU DTAD01SW NU MJ0KH1 sw - HZ 09/10/01 16:30 X - 01374164 NU DTTP01SS NU MJ0KH3 ss 0-6 HZ 09/10/01 17:10 X Silty soil, 5 inch gravel - subangular, light brown. 01374165 NU DTTP02SS NU MJ0KH4 ss 0-6 HZ 09/10/01 17:25 X Silt 60%. Sand 15% very fine to medium grained gravel. 25% subangular - angular, light gray to brown. 01374166 NU DTTP03SS NU MJ0KH5 ss 0-6 HZ 09/10/01 18:25 X X 70% sand, very fine to medium grained. 15% silt. 15% gravel, angular to subangular, light gray, brown, trace organics. L-Bar/Northwest Magnesite 01374101 01090401 LBDT01SD J0KC1 MJ0KC1 SD 0-8 RL 09/10/01 14:30 X X X X Dark brown to black. Lots of organic material - silty clay, roots, plant debris. 01374102 01090402 LBDT02SD J0KC2 MJ0KC2 SD 0-8 RL 09/10/01 15:00 X X X X Organic rich, wet, hydrogen sulfide odor, dark brown/black. 01374103 01090403 LBDT03SD J0KC3 MJ0KC3 SD 0-8 RL 09/10/01 15:30 X X X X Dark brown to black. Lots of organic matter. 01374110 01090410 LBPP01SD J0KD1 MJ0KD1 SD 0-8 RL 09/11/01 9:10 X X X X Silty sand, brown, chunks of clay material. Northwest Alloys 01374105 01090405 NAPP01SD J0KC5 MJ0KC5 SD 0-8 RL 09/10/01 17:15 X X X X Fine sand with little gravel. 01374106 01090406 NACK01SD J0KC6 MJ0KC6 SD 0-8 RL 09/10/01 17:45 X X X X Gravelly sand and poorly sorted. 01374107 01090407 NADT01SD J0KC7 MJ0KC7 SD 0-8 RL 09/10/01 18:15 X X X X Silt, very fine sand. Napoleon Mine/Mill 01374112 NU NPAD01SW NU MJ0KD3 SW - JS 09/12/01 9:45 X Clear, no odor. 01374113 01090412 NPPP01SD J0KD3 MJ0KD4 SD 0-8 JS 09/11/01 10:05 X X X X Silty loam, light brown, subangular to angular, trace organics. 3-5 Page 1 of 18 ------- Table 3-1 SAMPLE COLLECTION AND ANALYTICAL SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID E & E Sample ID Station Location ID CLP Organic No. CLP Inorganic No. Matrix Depth Sampler Date Time TAL Metals Pesticide/ PCBs roc VOCs SVOCs Description Van Stone \ [ine/Mill 01254312 NU VSTP21SS NU MJ0EW6 TL 0-6 AJ 06/22/01 12:20 X Gray, fine and sandy. 01254313 NU VSPP01SD NU MJ0EW7 SD 6-8 AJ 06/22/01 12:50 X Dark gray, fine, moist sandy. 01254314 NU VSPP02SD NU MJ0EW8 SD 6-8 AJ 06/22/01 13:25 X Dark gray, fine, moist sandy. 01254315 NU VSTP01SS NU MJ0EW9 ss 0-6 AJ 06/22/01 14:40 X Gray sand and soil, fine, dry. 01254316 NU VSTP02SS NU MJ0EX0 ss 0-6 AJ 06/22/01 15:15 X Dark gray/brown, dry, fine soil. 01254317 NU VSTP03SS NU MJ0EX1 ss 0-6 AJ 06/22/01 15:30 X Dark gray, dry, fine soil. 01254318 NU VSTP04SS NU MJ0EX8 ss 0-6 AJ 06/22/01 15:45 X Fine, dry, gray, sandy. 01254319 NU VSTP05SS NU MJ0EX3 ss 0-4 AJ 06/22/01 15:50 X Brown, fine, dry soil. 01254320 NU VSTP06SS NU MJ0EX4 ss 0-6 AJ 06/22/01 16:00 X Brown, fine, dry soil. 01254321 NU VSTP07SS NU MJ0EX5 ss 0-6 AJ 06/22/01 16:10 X Brown, fine, dry soil and tailings. 01254322 NU VSTP08SS NU MJ0EX6 ss 0-6 AJ 06/22/01 16:15 X Very fine, brown, dry soil. 01254323 NU VSTP09SS NU MJ0EX7 ss 0-6 AJ 06/22/01 16:20 X Dark brown, fine, dry soil. 01254324 NU VSSS01SS NU MJ0F12 ss 0-6 AJ 06/23/01 9:15 X X X Moist, brown, fine soil. 01254325 NU VSSS02SS NU MJ0EX9 ss 0-6 AJ 06/23/01 9:40 X X X Moist, brown, fine soil with small pebbles. 01254326 NU VSSS03SS NU MJ0EY0 ss 0-6 AJ 06/23/01 10:10 X X X Dark brown, moist, coarse sand. 01254327 NU VSSS04SS NU MJ0EY1 ss 0-6 AJ 06/23/01 10:45 X X Dark green, very fine, dry. 01254328 NU VSSS05SS NU MJ0EY2 ss 0-6 MW 06/23/01 10:47 X X Brown, dry, fine to coarse soil. 01254329 NU VSSS06SS NU MJ0EY3 ss 0-6 AJ 06/23/01 11:30 X X X Brown, dry, fine to coarse soil. 01254330 NU VSSS07SS NU MJ0EY4 ss 0-6 AJ 06/23/01 11:35 X X X Moist brown with some coarse soil. 01254331 NU VSTP10SS NU MJ0EY5 ss 0-6 AJ 06/23/01 13:35 X Moist brown soil and small rocks. 01254332 NU VSTP11SS NU MJ0EY6 ss 0-6 AJ 06/23/01 13:45 X Fine, brown, dry, soil. 01254333 NU VSTP12SS NU MJ0EY7 ss 0-6 AJ 06/23/01 13:50 X Fine, brown, dry, soil. 01254334 NU VSTP13SS NU MJ0EY8 ss 0-6 AJ 06/23/01 14:20 X Fine gray/brown, dry soil. 01254335 NU VSTP14SS NU MJ0EY9 ss 0-6 AJ 06/23/01 14:25 X Fine gray/brown, dry soil. 01254336 NU VSTP15SS NU MJ0EZ0 ss 0-6 AJ 06/23/01 14:00 X Fine, slightly moist, brown soil. 01254337 NU VSTP16SS NU MJ0EZ1 ss 0-6 AJ 06/23/01 14:40 X Fine, gray, dry soil. 01254338 NU VSTP17SS NU MJ0EZ2 ss 0-6 AJ 06/23/01 14:45 X Fine, brown, dry soil with small pebbles. 01254339 NU VSTP18SS NU MJ0EZ3 ss 0-6 AJ 06/23/01 14:05 X Fine, brown, dry soil with small pebbles. 01254340 NU VSTP19SS J0EZ4 NU ss 0-6 AJ 06/23/01 15:45 X Dark gray, fine, moist sandy. 01254341 NU VSTP20SS J0EZ5 NU ss 0-6 MW 06/23/01 15:45 X Dark gray, fine, moist sandy. 01254196 NU VSWP01SS NU MJ0GJ5 ss 0-6 NA 06/23/01 10:40 X Coarse sand with gravel, tan. Dry no odor. 01254197 NU VSWP02SS NU MJ0GJ6 ss 0-6 NA 06/23/01 11:05 X Tan/gray fine sand and gravel. Dry no odor. 01254198 NU VSWP03SS NU MJ0GJ7 ss 0-6 NA 06/23/01 11:50 X Tan/gray sandy gravel. Dry no odor. 01254199 NU VSWP04SS NU MJ0GJ8 ss 0-6 NA 06/23/01 12:15 X Tan sandy gravel. Dry no odor. 3-6 Page 2 of 18 ------- Table 3-1 SAMPLE COLLECTION AND ANALYTICAL SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID E & E Sample ID Station Location ID CLP Organic No. CLP Inorganic No. Matrix Depth Sampler Date Time TAL Metals Pesticide/ PCBs roc VOCs SVOCs Description Van Stone IV ine/Mill (c< jntinued) 01254200 NU VSWP05SS NU MJ0GJ9 SS 0-6 NA 06/23/01 12:40 X Gray fine sand with gravel and rocks. Dry no odor. 01254201 NU VSWP06SS NU MJ0GK0 ss 0-6 NA 06/23/01 13:35 X Gray fine sandy silt. Dry no odor. 01254202 NU VSWP07SS NU MJ0GK1 SS 0-6 NA 06/23/01 13:55 X Gray fine sand with gravel. Dry no odor. 01254203 NU VSWP08SS NU MJ0GK2 ss 0-6 NA 06/23/01 14:15 X Light tan fine sand/silt with gravel. Dry no odor. 01254204 NU VSWP09SS NU MJ0GK3 ss 0-6 NA 06/23/01 14:40 X Light tan fine sand/silt with gravel. Dry no odor. 01254205 NU VSWP10SS NU MJ0GK4 ss 0-6 NA 06/23/01 15:15 X Tan fine sand with gravel. Dry no odor. 01254206 NU VSWP11SS NU MJ0GK5 ss 0-6 NA 06/23/01 15:35 X Tan/gray very fine sand/silt and trace gravel. 01254207 NU VSWP12SS NU MJ0GK6 ss 0-6 NA 06/23/01 15:55 X Coarse gray sand with gravel. Dry no odor. 01254360 NU VSSP01SW NU MJ0FJ9 sw - RN 06/23/01 10:50 X No odor, moss particles, murky color. 01254361 NU VSPP03SD J0FK0 MJ0FK0 SD 6-8 RN 06/23/01 11:20 X X Gray sand/gravel. 01254362 NU VSMW01SW NU MJ0FK1 sw - RN 06/23/01 11:40 X Clear. 01254363 NU VSMW01SD J0FJ1 MJ0FK2 SD 6-8 RN 06/23/01 11:45 X X Silty sand to fine gravel, gray to light brown, slight odor. 01254364 NU VSPP04SD J0FJ2 MJ0FK3 SD 6-8 RN 06/23/01 13:50 X X Dark brown, medium to course sand with some silt. LeRoi/Northport Smelter 01264431 NU NSSL01SD NU MJ0GP0 SD 0-6 CG 06/28/01 13:15 X Dark brown to black medium sand. 01264432 NU NSSL02SD NU MJ0GP1 SD 0-6 CG 06/28/01 13:50 X Dark brown to black medium sand. 01264433 NU NSSL03SD NU MJ0GP2 SD 0-6 CG 06/28/01 14:10 X Mixed brown and black sand medium to fine. 01264434 NU NSSL04SD NU MJ0GP3 SD 0-6 CG 06/28/01 14:20 X Mixed brown and black sand medium to fine. 01264435 NU NSSL05SD NU MJ0GP4 SD 0-6 CG 06/28/01 14:30 X Black medium to fine sand well sorted. 01264436 NU NSSL06SD NU MJ0GP5 SD 0-6 CG 06/28/01 15:15 X Brown fine sand and silt with brick fragments. 01264437 NU NSSL07SD NU MJ0GP6 SD 0-6 CG 06/28/01 15:30 X Brown fine to very fine sand. 01264438 NU NSSL08SD NU MJ0GP7 SD 0-6 CG 06/28/01 15:45 X Brown fine to very fine sand. 01264439 NU NSSL09SD NU MJ0GP8 SD 0-6 CG 06/28/01 16:25 X Brown fine to very fine sand. 01374182 NU NSSL01SS NU MJ0KK0 SS 0-6 HZ 09/13/01 9:25 X No odor, silty loam, very rocky, dry, light brown. 01374183 NU NSSL02SS NU MJ0KK1 ss 0-6 HZ 09/13/01 10:45 X 85% sand, very fine to medium grained. 15% silt, medium brown subangular. Sandy reddish slag pieces and yellowish stain. 01374184 NU NSSL03SS NU MJ0KK2 ss 0-6 HZ 09/13/01 11:00 X 85% sand, very fine to medium grained. 15% silt, medium brown subangular. Sandy reddish with yellowish stain. 01374185 01090430 NSDT01SD J0KJ1 MJ0KK3 SD 0-8 JS 09/13/01 12:05 X X X X Light brown, subangular sand very fine to medium very coarse grained 01374186 01090431 NSPP01SD J0KJ2 MJ0KK4 SD 0-8 JS 09/13/01 12:30 X X X X Silty, saturated, light brown 3-7 Page 3 of 18 ------- Table 3-1 SAMPLE COLLECTION AND ANALYTICAL SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID E & E Sample ID Station Location ID CLP Organic No. CLP Inorganic No. Matrix Depth Sampler Date Time TAL Metals Pesticide/ PCBs roc VOCs SVOCs Description Black Rock Vline/Mill 01254160 NU BRWP01SS NU MJ0GE9 SS 0-6 NA 06/19/01 17:25 X Light brown medium sand with gravel. 01254161 NU BRWP02SS NU MJ0GF0 ss 0-6 NA 06/19/01 17:30 X Light brown/gray medium sand/gravel. 01254162 NU BRWP03SS NU MJ0GF1 SS 0-6 NA 06/19/01 17:40 X Light brown sand/gravel. 01254163 NU BRMS01SS NU MJ0GF2 ss 0-6 NA 06/19/01 18:00 X Light brown loamy sand 01254164 NU BRMS02SS NU MJ0GF3 ss 0-6 NA 06/19/01 18:05 X Light brown loamy sand Great Weste i n Mine 01254177 NU GWWP01SS NU MJ0GG6 ss 0-6 NA 06/21/01 11:20 X Brown course sand/gravel. Dry no odor. 01254178 NU GWWP02SS NU MJ0GG7 ss 0-6 NA 06/21/01 11:30 X Brown/orange coarse sand gravel. Dry no odor. Last Chance Mine/Mill 01254165 NU LCMS01SS NU MJ0GF4 ss 0-6 NA 06/20/01 10:10 X Medium brown fine loamy sand with trace gravel. 01254166 NU LCMS02SS NU MJ0GF5 ss 0-6 NA 06/20/01 10:25 X Medium brown fine sandy with gravel. 01254167 NU LCMS03SS NU MJ0GF6 ss 0-6 NA 06/20/01 10:35 X Medium brown/orange fine sand 01254168 NU LCPP01SD NU MJ0GF7 SD 0-8 NA 06/20/01 10:45 X Gray/brown/black medium sand with gravel, wet organic odor. 01254169 NU LCTP01SS NU MJ0GF8 ss 0-6 NA 06/20/01 11:30 X Fine sand/silt medium brown, dry, no odor 01254170 NU LCTP02SS NU MJ0GF9 ss 0-6 NA 06/20/01 11:40 X Fine sand/silt medium brown slightly orange 01254171 NU LCTP03SS NU MJ0GG0 ss 0-6 NA 06/20/01 11:45 X Loose sand with gravels medium brown 01254172 NU LCAD01SW NU MJ0GG1 sw - DW 06/20/01 13:15 X Clear water no odor. 01254173 NU LCPP02SD NU MJ0GG2 SD 0-8 DW 06/20/01 13:25 X Brown black medium sand/silt. Wet no odor. 01254174 NU LCWP01SS NU MJ0GG3 ss 0-6 NA 06/20/01 13:55 X Brown fine sand/silt. Dry no odor. 01254175 NU LCWP02SS NU MJ0GG4 ss 0-6 NA 06/20/01 14:10 X Brown fine sand/silt. Dry no odor. 01254176 NU LCWP03SS NU MJ0GG5 ss 0-6 NA 06/20/01 14:20 X Brown fine sand/silt. Dry no odor. Deep Creek Mine 01254251 NU DCWP01SS NU MJ0EN5 ss 0-6 CG 06/20/01 10:00 X White, quartz like, rocky. 01254252 NU DCWP02SS J0EN6 MJ0EN6 ss 0-6 CG 06/20/01 10:14 X X White quartz like. 01254253 NU DCWP03SS J0EN7 MJ0EN7 ss 0-6 CG 06/20/01 10:20 X X White quartz like. 01254254 NU DCWP04SS J0EN8 MJ0EN8 ss 0-6 CG 06/20/01 10:28 X X White quartz like. 01254255 NU DCTP01SS J0EN9 MJ0EN9 ss 0-6 CG 06/20/01 10:38 X X Fine, light brown, dry soil. 01254256 NU DCTP02SS J0EP0 MJ0EP0 ss 0-6 CG 06/20/01 10:44 X X Fine, light brown, dry soil. 01254257 NU DCTP03SS J0EP1 MJ0EP1 ss 0-6 CG 06/20/01 10:50 X X Fine, light brown, dry soil. 01254258 NU DCTP04SS J0EP2 MJ0EP2 ss 0-6 CG 06/20/01 14:13 X X Fine, light brown, dry soil. 01254259 NU DCTP05SS J0EP3 MJ0EP3 ss 0-6 CG 06/20/01 14:15 X X Fine, light brown, dry soil. 01254260 NU DCTP06SS J0EP4 MJ0EP4 ss 0-6 CG 06/20/01 14:18 X X Fine, light brown, dry soil. 01254261 NU DCTP07SS J0EP5 MJ0EP5 ss 0-6 CG 06/20/01 11:25 X X Fine, light brown, dry soil, with white quartz like rocks. 01254262 NU DCTP08SS J0EP6 MJ0EP6 ss 0-6 CG 06/20/01 11:35 X X Fine, light brown, dry soil, with white quartz like rocks. 01254263 NU DCTP09SS J0EP7 MJ0EP7 ss 0-6 CG 06/20/01 11:45 X X Fine, light brown, dry soil, with white quartz like rocks. 3-8 Page 4 of 18 ------- Table 3-1 SAMPLE COLLECTION AND ANALYTICAL SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID E & E Sample ID Station Location ID CLP Organic No. CLP Inorganic No. Matrix Depth Sampler Date Time TAL Metals Pesticide/ PCBs roc VOCs SVOCs Description Deep Creek Mine (conti nued) 01254264 NU DCTP10SS J0EP8 MJ0EP8 SS 0-6 CG 06/20/01 12:03 X X Fine, dry. 01254265 NU DCTP11SS J0EP9 MJ0EP9 ss 0-6 CG 06/20/01 12:07 X X Fine, dry. 01254266 NU DCTP12SS J0EQ0 MJ0EQ0 SS 0-6 CG 06/20/01 12:07 X X Fine, dry. 01254267 NU DCWP05SS NU MJ0EQ1 ss 0-6 CG 06/20/01 12:43 X White, quartz like. 01254268 NU DCTP13SS J0EQ2 MJ0EQ2 ss 0-6 CG 06/20/01 13:26 X X Light brown, fine dry soil with some white quartz like rocks. 01254269 NU DCTP14SS J0EQ3 MJ0EQ3 ss 0-6 CG 06/20/01 13:39 X X Light brown, fine dry soil with some white quartz like rocks. 01254270 NU DCTP15SS J0EQ4 MJ0EQ4 ss 0-6 CG 06/20/01 13:31 X X Light brown, fine dry soil with some white quartz like rocks. 01254271 NU DCAD01SW NU MJ0EQ5 sw - MW 06/20/01 13:45 X No odor, clear. 01254272 NU DCTP16SS J0EQ6 MJ0EQ6 ss 0-6 CG 06/20/01 13:49 X X Fine slightly moist, brown soil. 01254273 NU DCTP17SS J0EQ7 MJ0EQ7 ss 0-6 CG 06/20/01 13:50 X X Fine, slightly moist, brown soil. 01254274 NU DCTP18SS J0EQ8 MJ0EQ8 ss 0-6 CG 06/20/01 13:53 X X Fine, slightly moist, brown soil. 01254275 NU DCSD01SD NU MJ0EQ9 SD 0-6 CG 06/20/01 15:15 X Moist fine brown sediment with gold fleck 01254276 NU DCSW01SW NU MJ0ER0 sw - CG 06/20/01 15:15 X Clear water no odor. Copper King Mine 01254156 NU CKWP01SS NU MJ0GE5 ss 0-6 NA 06/19/01 14:15 X Fine orange/brown sand with trace gravel and pyrite. 01254157 NU CKWP02SS NU MJ0GE6 ss 0-6 NA 06/19/01 14:25 X 0-3 inches fine orange sand. 3-6 inches fine gray sand. 01254158 NU CKAD01SW NU MJ0GE7 sw - NA 06/19/01 15:00 X Clear water no odor. 01254159 NU CKPP01SD NU MJ0GE8 SD 0-8 NA 06/19/01 15:15 X Light brown medium sand with gravel. Sierra Zinc! Vline/Mill 01254277 NU SZTP01SS NU MJ0ER1 TL 0-6 GG 06/21/01 10:30 X Black/gray silt. 01254278 NU SZTP02SS NU MJ0ER2 TL 0-6 GG 06/21/01 10:35 X White/medium sand. 01254279 NU SZTP03SS NU MJ0ER3 TL 0-6 GG 06/21/01 10:40 X Beige fine sand/clay, moist. 01254280 NU SZTP04SS NU MJ0ER4 SS 0-6 GG 06/21/01 10:52 X Dark gray, fine, dry sand. 01254281 NU SZTP05SS NU MJ0ER5 SS 0-6 GG 06/21/01 10:54 X Dark gray, fine, moist sand. 01254282 NU SZTP06SS NU MJ0ER6 SS 0-6 GG 06/21/01 10:56 X Black, fine, moist soil. 01254283 NU SZTP07SS NU MJ0ER7 SS 0-6 GG 06/21/01 10:58 X Gray, lumpy, clayey, dry soil. 01254284 NU SZTP08SS NU MJ0ER8 SS 0-6 GG 06/21/01 11:00 X Muddy, gray, fine, moist soil. 01254285 NU SZTP09SS NU MJ0ER9 SS 0-6 GG 06/21/01 11:04 X Coarse, gray, slightly moist soil. 01254286 NU SZTP10SS NU MJ0ES0 SS 0-6 GG 06/21/01 11:11 X Brown, fine, dry soil. 01254287 NU SZTP11SS NU MJ0ES1 SS 0-6 GG 06/21/01 11:13 X Brown, fine, dry soil. 01254288 NU SZTP12SS NU MJ0ES2 ss 0-6 GG 06/21/01 11:16 X Moist, brown, clayey with pebbles. 01254289 NU SZTP13SS NU MJ0ES3 ss 0-6 GG 06/21/01 12:24 X Gray, moist clay. 01254290 NU SZTP14SS NU MJ0ES4 ss 0-6 GG 06/21/01 12:27 X Gray, moist clayey soil. 01254291 NU SZTP15SS NU MJ0ES5 ss 0-6 GG 06/21/01 12:29 X Gray, moist clayey soil. 3-9 Page 5 of 18 ------- Table 3-1 SAMPLE COLLECTION AND ANALYTICAL SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID E & E Sample ID Station Location ID CLP Organic No. CLP Inorganic No. Matrix Depth Sampler Date Time TAL Metals Pesticide/ PCBs roc VOCs SVOCs Description Sierra Zinc ] Mine/Mill (( :ontinued) 01254292 NU SZTP16SS NU MJ0ES6 SS 0-6 GG 06/21/01 12:33 X Light gray, slightly moist, clayey soil. 01254293 NU SZTP17SS NU MJ0ES7 ss 0-6 GG 06/21/01 12:35 X Gray and black, slightly moist, clayey soil. 01254294 NU SZTP18SS NU MJ0ES8 SS 0-6 GG 06/21/01 12:37 X Gray, dry clayey soil. 01254295 NU SZTP19SS NU MJ0ES9 ss 0-6 GG 06/21/01 12:41 X Gray, dry clayey soil. 01254296 NU SZTP20SS NU MJ0ET0 ss 0-6 GG 06/21/01 12:43 X Gray, dry clayey soil. 01254297 NU SZTP21SS NU MJ0ET1 ss 0-6 GG 06/21/01 12:45 X Gray/brown, dry, clayey soil 01254298 NU SZAD01SW NU MJ0ET2 sw - GG 06/21/01 13:39 X Clear, no odor. 01254299 NU SZWP01SS J0ET3 MJ0ET3 ss 0-6 GG 06/21/01 14:00 X X Brown, dry fines. 01254300 NU SZWP02SS J0ET4 MJ0ET4 ss 0-6 GG 06/21/01 14:05 X X Brown, dry fines. 01254301 NU SZWP03SS J0ET5 MJ0ET5 ss 0-6 GG 06/21/01 14:10 X X Gray, fine, dry sand. 01254302 NU SZWP04SS NU MJ0ET6 ss 0-6 GG 06/21/01 14:22 X Gray, fine, dry sand. 01254303 NU SZWP05SS NU MJ0ET7 ss 0-6 GG 06/21/01 14:25 X Gray, fine, dry sand. 01254304 NU SZWP06SS NU MJ0ET8 ss 0-6 GG 06/21/01 14:28 X Gray, fine, dry sand. 01254305 NU SZWP07SS NU MJ0ET9 ss 0-6 GG 06/21/01 14:33 X Light brown fine, dry sand. 01254306 NU SZWP08SS NU MJ0EW0 ss 0-6 GG 06/21/01 14:36 X Light brown, fine, dry, small rocks. 01254307 NU SZWP09SS NU MJ0EW1 ss 0-6 GG 06/21/01 14:39 X Gray, sandy, fine, dry with rocks. 01254308 NU SZWP10SS NU MJ0EW2 ss 0-6 GG 06/21/01 14:44 X Gray and black, sandy, dry soil. 01254309 NU SZWP11SS NU MJ0EW3 ss 0-6 GG 06/21/01 14:47 X Gray and black, sandy, dry soil. 01254310 NU SZWP12SS NU MJ0EW4 ss 0-6 GG 06/21/01 14:50 X Brown fine, dry soil with rocks. 01254311 NU SZMS01SS J0EW5 MJ0EW5 ss 0-6 GG 06/21/01 14:55 X X Black, fine, slightly moist, sandy with lumps. Electric Point Mine/Mill 01254185 NU EPWP01SS NU MJ0GH4 ss 0-6 NA 06/22/01 12:45 X Fine/medium tan sand with gravel. 01254186 NU EPWP02SS NU MJ0GH5 ss 0-6 NA 06/22/01 12:50 X Fine/medium tan sand with gravel. 01254187 NU EPWP03SS NU MJ0GH6 ss 0-6 NA 06/22/01 12:58 X Fine/medium tan sand with gravel. 01254188 NU EPMS01SS NU MJ0GH7 ss 0-6 NA 06/22/01 13:10 X Fine medium brown sandy silt 01254189 NU EPMS02SS NU MJ0GH8 ss 0-6 NA 06/22/01 13:15 X Fine medium brown slightly red sandy silt 01254190 NU EPMS03SS NU MJ0GH9 ss 0-6 NA 06/22/01 13:25 X Fine medium brown slightly red sandy silt 01254191 NU EPWP04SS NU MJ0GJ0 ss 0-6 NA 06/22/01 14:15 X Fine medium brown slight red sand with trace gravel. 01254192 NU EPWP05SS NU MJ0GJ1 ss 0-6 NA 06/22/01 14:25 X Light brown/tan sand with some gravel. 01254193 NU EPTP01SS NU MJ0GJ2 ss 0-6 NA 06/22/01 14:35 X Fine medium light brown sand/silt 01254194 NU EPTP02SS NU MJ0GJ3 ss 0-6 NA 06/22/01 14:40 X Brown/orange fine sand silt. Dry no odor. 01254195 NU EPTP03SS NU MJ0GJ4 ss 0-6 NA 06/22/01 14:45 X Brown/tan fine sand with gravel. 3-10 Page 6 of 18 ------- Table 3-1 SAMPLE COLLECTION AND ANALYTICAL SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID E & E Sample ID Station Location ID CLP Organic No. CLP Inorganic No. Matrix Depth Sampler Date Time TAL Metals Pesticide/ PCBs roc VOCs SVOCs Description Gladstone IV [ine/Mill 01254179 NU GLTP01SS NU MJ0GG8 SS 0-6 DW 06/21/01 16:10 X Fine brown/orange sand/silt. Dry no odor. 01254180 NU GLTP02SS NU MJ0GG9 ss 0-6 NA 06/21/01 16:22 X Fine brown/orange sand/silt. Dry no odor. 01254181 NU GLTP03SS NU MJ0GH0 SS 0-6 NA 06/21/01 16:30 X Fine brown silty sand with some orange. Dry no odor. 01254182 NU GLMS01SS NU MJ0GH1 ss 0-6 NA 06/21/01 16:35 X Fine/medium red/brown sand. No odor. 01254183 NU GLMS02SS NU MJ0GH2 ss 0-6 NA 06/21/01 16:45 X Medium brown sand/gravel with many rocks. No odor. 01254184 NU GLMS03SS NU MJ0GH3 ss 0-6 NA 06/21/01 16:55 X Brown/orange fine sand with trace gravel. Red Top Mine 01254153 NU RDWP01SS NU MJ0GE2 ss 0-6 NA 06/18/01 15:50 X X Light brown fine sand with trace gravel. Dry, no odor. 01254154 NU RDWP02SS NU MJ0GE3 ss 0-6 NA 06/18/01 16:00 X X Light brown fine sand with trace gravel. Dry, no odor. 01254155 NU RDWP03SS NU MJ0GE4 ss 0-6 NA 06/18/01 16:10 X X X Medium brown fine sand with gravel. Dry, no odor. Anderson Calhoun Mine/Mill 01374167 NU ANAD01SW NU MJ0KH6 sw - HZ 09/11/01 15:25 X 20 sec to fill 1 L bottle. Teal color, no odor. 01374168 NU ANSS01SS J0KH1 MJ0KH7 ss 0-6 HZ 09/12/01 9:30 X X X Stained soil black, oily odor, rocky, sandy, near palette. 50% gravel, angular to subangular, gray. 50% sand, very fine to very coarse. 01374169 NU ANSS02SS J0KH2 MJ0KH8 ss 0-6 HZ 09/12/01 9:40 X X X Stained soil black. 70% silt. 25% sand, very fine to very coarse gravel. 5% gravel (subangular) light brown to gray. 01374170 NU ANTP01SS NU MJ0KH9 ss 0-6 HZ 09/12/01 10 45 X 100% silt, gray. 01374171 NU ANTP02SS NU MJ0KJ0 ss 0-6 HZ 09/12/01 11 00 X 100% silt, gray. 01374172 NU ANTP03SS NU MJ0KJ1 ss 0-6 HZ 09/12/01 11 05 X 100% silt, light gray. 01374173 NU ANTP04SD NU MJ0KJ2 SD 0-6 HZ 09/12/01 11 10 X 100% silt, dark brown to black. 01374174 NU ANTP05SD NU MJ0KJ3 SD 0-6 HZ 09/12/01 11 20 X 100% silt, dark brown to black. 01374175 NU ANTP06SD NU MJ0KJ4 SD 0-6 HZ 09/12/01 11 45 X 100% silt, dark brown to black. 01374177 01090428 ANCK01SD J0KH4 MJ0KJ6 SD 0-8 HZ 09/12/01 14 00 X X X X 100% silt, light brown to gray, trace organics. 01374178 01090429 ANPP01SD J0KH5 MJ0KJ7 SD 0-6 HZ 09/12/01 15 10 X X X X 95% silt. 5% sand, subangular, saturated organic odor, black, dark color. 01374179 NU ANSS03SS J0KH6 MJ0KJ8 SS 0-6 HZ 09/12/01 13:15 X X X Sand 50%, very fine to very coarse grain size, brown. Silt 20%, light gray to brown. Gravel 30% very angular to subangular. 01374180 NU ANSS04SS J0KH7 MJ0KJ9 ss 0-6 HZ 09/12/01 13:25 X X X Sand 55%, very fine to very coarse grain size. 45% gravel to cobbles. Trace silt, medium gray to brown with trace organics. 3-11 Page 7 of 18 ------- Table 3-1 SAMPLE COLLECTION AND ANALYTICAL SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID E & E Sample ID Station Location ID CLP Organic No. CLP Inorganic No. Matrix Depth Sampler Date Time TAL Metals Pesticide/ PCBs roc VOCs SVOCs Description Iroquois Mir le 01254356 NU IRAD01SW NU MJ0FJ5 SW - RN 06/22/01 13:50 X X X Clear, no odor, no turbidity. 01254357 NU IRAD02SW NU MJ0FJ6 sw - RN 06/22/01 14:25 X Clear, no odor. 01254358 NU IRWP01SS NU MJ0FJ7 ss 0-6 RN 06/22/01 14:40 X Gray, sandy, slight organic odor, lots of small pebbles. 01254359 NU IRWP02SS NU MJ0FJ8 ss 0-6 RN 06/22/01 14:55 X Dark gray, sandy gravel. Melrose Mine 01254151 NU MLPP01SD NU MJ0GE0 SD 0-8 NA 06/18/01 12:10 X X X Brown sand with trace gravel and trace organic 01254152 NU MLAD01SW NU MJ0GE1 SW - NA 06/18/01 12:20 X X X No odor to the water, clear Background 01264251 NU BK01SS J0EZ6 MJ0EZ6 ss 0-6 MW 06/24/01 8:00 X X Brown, dry, fine soil. 01264275 NU BK04SS NU MJ0F21 ss 0-6 MW 06/28/01 10:10 X Black, fine, silty soil. 01264276 NU BK05SS NU MJ0F22 ss 0-6 MW 06/28/01 11:30 X Brown, dry, fine soil. 01264279 NU BK06SS NU MJ0F25 ss 0-6 MW 06/28/01 13:45 X Brown, dry, fine soil. 01264280 NU BK07SS NU MJ0F26 ss 0-6 MW 06/28/01 15:05 X Brown, dry, fine soil. 01264281 NU BK08SS NU MJ0F27 ss 0-6 MW 06/28/01 15:45 X Brown, dry, fine soil. 01374181 01090427 ANBK01SD J0KH3 MJ0KJ5 SD 0-6 HZ 09/12/01 15:45 X X X X 98% sand, very fine to coarse grained, subangular. Trace 2%gravel, brown. 01374189 NU ANBK02SS NU MJ0KK7 ss 0-6 HZ 09/13/01 14:35 X Brown color, organic material fine light no cobble 01374163 NU DTBK01SS NU MJ0KH2 ss 0-6 HZ 09/10/01 16:55 X Sandy soil, trace organics. 01374104 01090404 LBBK01SD J0KC4 MJ0KC4 SD 0-8 RL 09/10/01 16:15 X X X X Dry, hard mud with rootlet holes, fine grained, less organic content, silty. 01374111 01090411 LBBK02SD J0KD2 MJ0KD2 SD 0-8 RL 09/11/01 10:00 X X X X Brown, fine to course sand with gravel. 01374108 01090408 NABK01SD J0KC8 MJ0KC8 SD 0-8 RL 09/10/01 18:30 X X X X Gravelly sand. 01374109 01090409 NABK02SD J0KC9 MJ0KC9 SD 0-8 RL 09/11/01 8:05 X X X X Blue-green, silty clay/clayey silt, firm. 01374187 01090432 NSBK01SD J0KJ3 MJ0KK5 SD 0-8 JS 09/13/01 13:00 X X X X 20% gravel off white color, max 7-8 mm subangular. 20% silt, 60% sand - very fine to fine grained. 01374188 NU NSBK02SS NU MJ0KK6 SS 0-6 JS 09/13/01 13:15 X X Silty loam light brown to gray 01374114 01090413 NPBK01SD J0KD4 MJ0KD5 SD 0-8 JS 09/12/01 10:45 X X X X Light brown, 20% very fine to medium size gravel. 20% gravel. 60% silty sand, angular to subangular. 01374223 NU KRBK01SD J0KK9 MJ0KK9 SD 0-8 MT 09/12/01 X X X Sandy silt, dark brown. 01374224 NU KRBK02SD J0KL0 MJ0KL0 SD 0-8 MT 09/12/01 X X X Brown sand. 3-12 Page 8 of 18 ------- Table 3-1 SAMPLE COLLECTION AND ANALYTICAL SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID E & E Sample ID Station Location ID CLP Organic No. CLP Inorganic No. Matrix Depth Sampler Date Time TAL Metals Pesticide/ PCBs roc VOCs SVOCs Description WESTON Si imples 01224158 NU RS001 JX556 MJ0981 RS SMF 05/31/01 0830 X X 01224159 NU RS002 JX557 MJ0982 RS SMF 05/31/01 0900 X X 01234135 NU RS003 JX792 MJ0BJ3 RS SMF 06/08/01 0800 X X 01264071 NU RS004 JX830 MJ0BQ4 RS KB 06/27/01 0700 X X 01204013 NU RW001 JX428 MJ08Y5 RS SMF 05/15/01 1120 X X X X Clear, colorless, no odor. 01204108 NU TB001 JX547 NU TB SMF 05/14/01 1145 X 01204109 NU TB002 JX549 NU TB SMF 05/14/01 1000 X 01234079 NU TS001 NU MJ0BJ7 SD 0-2 SMF 06/05/01 1000 X 0% gravel, -5% sand, 90% silt, -5% clay. Dry, medium brown. Rootlets are common, no slag, no odor. 01234080 NU TS002 NU MJ0BJ5 SD 0-0.5 SMF 06/05/01 1045 X 0% gravel, <1% sand, 100% silt, 0% clay. Light brown, dry. Organics (rootlets, woody fragments) -20% of sample. 01234053 NU TS003 NU MJ09E4 SD 0-3 KB 06/03/01 1500 X 0% gravel, 30% fine sand, 65% silt, 0%clay, brown, no odor or slag, no organics, no debris. 01234081 NU TS004 JX570 MJ0BJ6 SD 0-2 SMF 06/05/01 1145 X X X 0% gravel, 30% very fine sand, 70% silt, <1% clay. Saturated, medium brown at surface, dark gray to black underneath. Organics include rootlets, twig fragments, insect casings, and fines. Moderate "sewage" smell. 01234052 NU TS005 JX559 MJ09E6 SD 0-2 KB 06/03/01 1315 X X X 0% gravel, 90% fine to medium sand, 10% silt, 0% clay. Grayish brown, no odor, no slag, some twigs, no debris. 01234082 NU TS006 NU MJ0BJ7 SD 0-2 SMF 06/05/01 1245 X 0% gravel, 60% sand, 40% silt, <1% clay. Saturated, medium grayish brown. No odor. -' 10% organics (rootlets and wood fragments). No slag. 01234054 NU TS007 JX558 MJ09E5 SD 0-4 KB 06/04/01 1430 X X X 5% gravel, 75% fine sand, 20% silt, 0% clay, light brown, no odor or slag, scattered roots, no other debris. 01234083 NU TS008 NU MJ0BJ8 SD 0-1 SMF 06/05/01 1400 X 0% gravel, 15% very fine sand, 85% silt, 0% clay. Dry, medium grayish brown. Organic debris includes rootlets, twigs, and woody fragments. Organics make up -10% of sample. No odor, no slag. 01234055 NU TS009 NU MJ09E8 SD 0-3 KB 06/04/01 1645 X 0% gravel, 100% sand, 0% silt, 0% clay, brown, no odor or slag, occasional twigs, no other debris. 01234058 NU TS010 NU MJ09E7 SD 0-3 KB 06/04/01 1550 X 20% fine gravel, 80% fine coarse sand, 0% silt, 0% clay. Brown, no odor or slag, scattered roots, no other debris. 01234084 NU TS011 NU MJ0BJ9 SD 0-2 SMF 06/05/01 1445 X 0% gravel, 10% very fine sand, 80% silt, 10% clay. Dry, grayish brown. Organics (rootlets, wood and bark fragments) make up - 20% of sample. No odor, no slag. 01234051 NU TS012 NU MJ09F0 SD 0-3 KB 06/03/01 1045 X 0% gravel, 40% sand, 60% silt, 0% clay. Dark brown, no odor, no slag, scattered roots, charcoal. 3-13 Page 9 of 18 ------- Table 3-1 SAMPLE COLLECTION AND ANALYTICAL SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID E & E Sample ID Station Location ID CLP Organic No. CLP Inorganic No. Matrix Depth Sampler Date Time TAL Metals Pesticide/ PCBs roc VOCs SVOCs Description WESTON Samples (continued) 01234056 NU TS013 NU MJ09E9 SD 0-4 KB 06/04/01 1245 X 0% gravel, 75% coarse to fine sand, 25% silt, 0% clay, grayish brown, no odor or slag, occasional roots/twigs, no other debris. 01234057 NU TS014 NU MJ09F1 SD 0-3 KB 06/04/01 1400 X 0% gravel, 90% coarse to fine sand, 10% silt, 0% clay, light brown, no odor or slag, occasional twigs, no other debris. 01234050 NU TS015 NU MJ09F2 SD 0-2 KB 06/03/01 0935 X 0% gravel, 60% sand, 40% silt, 0% clay. Dark brown, no odor, no slag, twigs, pine needles, no debris. 01234096 NU TS016 NU MJ0BK8 SD 0-1 SMF 06/05/01 1545 X 0% gravel, 50% very fine to coarse sand, 50% silt, <1% clay. Dry, medium grayish brown. 10% organics including rootlets and grass detritus, no odor, no slag. 01234097 NU TS017 NU MJ0BK9 SD 0-1 SMF 06/05/01 1630 X 0% gravel, 20% very fine sand, 80% silt, 0% clay. Dry, light grayish brown. 10% organics, including rootlets and woody fragments, no odor, no slag. 01234098 NU TS018 NU MJ0BL0 SD 0-1 SMF 06/06/01 0945 X 0% gravel, 10% very fine sand, 80% silt, 10% clay. Dry, medium grayish brown. 10% orgnaic debris, including twig framents and rootlets. No odor, no slag. 01234085 NU TS019 NU MJ09F3 SD 0-2 SMF 06/06/01 1030 X 20% gravel (granules up to 1 cm), 65% fine to coarse sand, 15% silt, 0% clay. Dry, medium grayish brown to dark grayish brown. No odor, no slag. <5% organics (rootlets and woody fragments). 01234059 NU TS020 NU MJ09F4 SD 0-2.5 SMF 06/03/01 1030 X 0% gravel, 10% sand, 50% silt, 40% clay, FI2S odor. Dark gray, moist, some plant material. 01234060 NU TS021 NU MJ09F5 SD 0-1.5 SMF 06/03/01 1100 X 0% gravel, 20% fine to very fine sand, 55% silt, 25% clay. Dry, light brownish gray. Some plant debris, no odor, no slag. 01234099 NU TS022 JX571 MJ0BL1 SD 0-2 SMF 06/06/01 1100 X X X 0% gravel, 60% very fine to medium sand, 30% silt, 10% clay. Saturated. Medium-dark reddish brown. Some rootlets. No odor, no slag observed. 01234100 NU TS023 NU MJ0BL2 SD 0-1.5 SMF 06/06/01 1245 X 0% gravel, 10% fine to very fine sand, 90% silt, 1% clay. Saturated. Medium grayish brown. Abundant organics including rootlets and leaf debris and fines. No odor, no slag. 01234101 NU TS024 NU MJ0BL3 SD 0-3 SMF 06/06/01 1300 X <1% gravel (granules), 30% very fine sand, 65% silt, <5% clay. Dry, light brownish gray. Organics including rootlets and woody fragments make up ~5% of sample. No odor, no slag. 3-14 Page 10 of 18 ------- Table 3-1 SAMPLE COLLECTION AND ANALYTICAL SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID E & E Sample ID Station Location ID CLP Organic No. CLP Inorganic No. Matrix Depth Sampler Date Time TAL Metals Pesticide/ PCBs roc VOCs SVOCs Description WESTON Samples (continued) 01234102 NU TS025 NU MJ0BL4 SD 0-5 SMF 06/06/01 1330 X 0% gravel, 65% fine to coarse sand, 35% silt, 0% clay. Dry, light grayish brown. Organic debris including bark, rootlets, and twig fragments ~1" long comprise 40% or more of the sample as a whole. 01234061 NU TS026 NU MJ09F6 SD 0-2 SMF 06/03/01 1300 X 10% fine gravel, 40% fine-coarse sand, 50% silt, 0% clay, dark brown, saturated, abundant fine organic particles. No slag. Algae odor. 01234064 NU TS027 NU MJ09F7 SD 0-2 KB 06/04/01 1200 X 0% gravel, 35% fine sand, 65% silt, 0% clay, dark brown, no odor or slag, scattered twigs, no other debris. 01234086 NU TS028 NU NJ09F8 SD 0-2 SMF 06/06/01 1415 X 0% gravel, 60% sand, 40% silt, <1% clay. Saturated, medium brown. No odor. ~5% organics (woody fragments). No slag. 01234062 NU TS029 NU MJ09F9 SD 0-1 SMF 06/03/01 1345 X 40% flat, angular gravel (1/4" 1/2"), 30% fine to coarse sand, 30% silt, <1% clay. Medium gray. Small insects, some organics, no slag, no odor, dry. 01234087 NU TS030 NU MJ09G0 SD 0-1.5 SMF 06/06/01 1515 X 0% gravel, 65% fine to medium sand, 20% silt, 15% clay. Dry to moist, medium grayish brown. Organic material makes up -20% of sample (rootlets, leaf debris, woody material). 01234103 NU TS031 JX572 MJ0BL5 SD 0-8 SMF 06/06/01 1600 X X X 0% gravel, 100% fine to very fine sand, 0% silt, 0% clay. Highly organic, largely mossy and other plant debris, like peat moss in appearance. Dry, medium to dark grayish brown. No slag. 01234112 NU TS032 NU MJ0BM4 SD 0-2 KB 06/07/02 0915 X 5% fine gravel, 80% medium to fine sand, 15% silt, 0% clay. Dark brown, no odor or slag, occasional woody debris. 01234063 NU TS033 NU MJ09G1 SD 0-2 SMF 06/03/01 1450 X 0% gravel, 10% very fine sand, 80% silt, 10% clay. Very dark grayish brown, highly organic, saturated. Strong S odor, some insect "shells", no slag. Fine organics, apparently from moss. 01234113 NU TS034 NU MJ0BM5 SD 0-3 KB 06/07/01 1000 X 0% gravel, 100% medium sand, 0% silt, 0% clay, light brown, no odor or slag, no organics, no other debris. 01234128 NU TS035 NU MJ0BK8 SD 0-4 SMF 06/09/01 1500 X <1% gravel (granules), 60% very fine sand, 35% silt, <5% clay. Moist, dark grayish brown. Minor amounts of plant detritus. No odor, no slag. 01234129 NU TS036 JX793 MJ0BK9 SD 0-6 SMF 06/09/01 1530 X X X <1% angular gravel, 5% very fine sand, 65% silt (including clods), 30% clay. Dry, grayish brown. "Soil" odor, no slag. Organics include rootlets, 10-15% of sample. 01234067 NU TS037 NU MJ09G2 SD 0-4 KB 06/04/01 0930 X 0% gravel, 100% fine sand, 0% silt, 0% clay. Grayish brown. No odor or slag, scattered roots, no debris. Page 11 of: 3-15 ------- Table 3-1 SAMPLE COLLECTION AND ANALYTICAL SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID E & E Sample ID Station Location ID CLP Organic No. CLP Inorganic No. Matrix Depth Sampler Date Time TAL Metals Pesticide/ PCBs roc VOCs SVOCs Description WESTON Samples (continued) 01234068 NU TS038 JX560 MJ09G3 SD 0-3 KB 06/04/01 1030 X X X 10% gravel, 70% fine sand, 20% silt, 0% clay, brown, no odor or slag, scattered roots, no other debris. 01234114 NU TS039 NU MJ0BM6 SD 0-2 KB 06/07/01 1030 X 5% fine gravel, 95% medium to fine sand, 0% silt, 0% clay. Light brown, no odor or slag. No organics or other debris. 01234071 NU TS040 NU MJ09G6 SD 0-3 KB 06/06/01 1200 X 0% gravel, 100% fine sand, 0% silt, 0% clay, light brown, no odor or slag, no organics, no other debris. 01234115 NU TS041 NU MJ0BM7 SD 0-2 KB 06/07/01 1130 X 0% gravel, 60% medium sand, 40% silt, 0% clay. Brown, no odor or slag, no organics, no other debris. 01234116 NU TS042 NU MJ0BM8 SD 0-1 KB 06/07/01 1300 X 0% gravel, 50% fine sand, 50% silt, 0% clay, dark brown, no odor or slag, no organics or other debris. 01234072 NU TS043 NU MJ09G7 SD 0-4 SMF 06/04/01 1015 X 0% gravel, 70% sand, 30% silt, -1% clay, no odor, medium brown, dry. Sand is predominantly coarse - medium. Organics from soil horizon include woody fragments and rootlets. 01234106 NU TS044 JX573 MJ0BL8 SD 0-4 KB 06/06/01 1500 X X X 0% gravel, 90% fine sand, 10% silt, 0% clay. Light brown, no odor or slag, occasional roots and woody debris. 01234075 NU TS045 JX564 MJ09H0 SD 0-7 SMF 06/04/01 1830 X X X 1% gravel (granules 1 cm long), <5% fine-very fine sand, 90% silt, 5% clay. Moist, dark brown. Rootlets, no odor, abundant organics, some woody debris. 01234076 NU TS046 JX565 MJ0BJ1 SD 0-1.5 SMF 06/04/01 1745 X X X <1% gravel, 40% sand, 60% silt, 0% clay. Saturated, medium grayish brown, very slight organic odor, organic matter including rootlets, leaves and fine organics, and woody pieces, twigs. 01234077 NU TS047 JX566 MJ0BJ2 SD 0-2 SMF 06/04/01 1715 X X X 1% gravel, 15% sand (medium to coarse), 40% silt, 44% clay. Strong sewage odor, saturated, very dark gray. Organic matter including rootlets. 01234073 NU TS048 JX562 MJ09G8 SD 0-2 SMF 06/04/01 1105 X X X 20% gravel (granules up to 1 cm), 80% sand (fine to coarse), trace silt, 0% clay. Multi-colored grains, saturated. No obvious slag, no odor. 01234117 NU TS049 NU MJ0BM9 SD 0-2 KB 06/07/01 1645 X 0% gravel, 100% coarse to fine sand, 0% silt, 0% clay. Brown, no odor or slag, scattered roots, no other debris. 01234136 NU TS050 NU MJ0BJ4 SD 0-3 SMF 06/09/01 1730 X <1% gravel, 70% very coarse to very fine sand, 20% silt, 10% clay. Wet, dark gray, no odor. 01234118 NU TS051 NU MJ0BN0 SD 0-3 KB 06/07/01 1600 X 0% gravel, 70% medium to fine sand, 30% silt, 0% clay. Dark brown, no odor or slag, occasional roots/pine needles, no other debris. 3-16 Page 12 of 18 ------- Table 3-1 SAMPLE COLLECTION AND ANALYTICAL SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID E & E Sample ID Station Location ID CLP Organic No. CLP Inorganic No. Matrix Depth Sampler Date Time TAL Metals Pesticide/ PCBs roc VOCs SVOCs Description WESTON Samples (continued) 01234104 NU TS052 NU MJ0BK6 SD 0-4 KB 06/07/01 1500 X 0% gravel, 100% coarse sand, 0% silt, 0% clay. Brown, no odor or slag, scattered roots, no other debris. Bottom inch of material sampled consisted of 70% sand, 30% silt, dark brown. 01234119 NU TS053 NU MJ0BN1 SD 0-2 KB 06/07/01 1430 X 0% gravel, 85% medium to fine sand, 15% silt, 0% clay, brown, no odor or slag. No organics or other debris. 01234120 NU TS054 NU MJ0BN2 SD 0-2 KB 06/07/01 1400 X 0% gravel, 100% coarse to fine sand, 0% silt, 0% clay. Light brown, no odor or slag, no organics or other debris. 01234078 NU TS055 NU MJ0BJ3 SD 0-1 SMF 06/04/01 1300 X 0% gravel, 90% sand (very fine to fine), ~'5% silt, ~5% clay. Medium brown/grayish brown, saturated, no odor. Some fine black particulates, but not obvious slag. Black organic particles also. 01234107 NU TS056 JX574 MJ0BL9 SD 0-1.5 KB 06/06/01 1645 X X X 0% gravel, 80% fine sand, 20% silt, 0% clay. Light brown, no odor or slag, scattered roots and woody debris. 01234108 NU TS057 JX791 MJ0BM0 SD 0-3 KB 06/06/01 1600 X X X 0% gravel, 80% coarse to fine sand, 20% silt, 0% clay. Grayish brown, no odor or slag, scattered woody debris. 01234109 NU TS058 NU MJ0BM1 SD 0-4 KB 06/06/01 1400 X 0% gravel, 100% medium to fine sand, 0% silt, 0% clay. Grayish brown, no odor or slag, occasional woody twigs, no other debris. 01234121 NU TS059 NU MJ0BJ1 SD 0-5 SMF 06/09/01 1645 X 10% gravel, 70% fine to coarse sand, 10% silt, 10% clay. Moist, dark brownish gray, slight sulfur odor, no slag, some shell material. 01234065 NU TS060 NU MJ09F8 SD 0-1 KB 06/06/01 0900 X 15% fine gravel, 75% coarse and fine sand, 10% silt, 0% clay, brown, no odor or slag. Occasional pine needles, no other debris. 01234110 NU TS061 NU MJ0BM2 SD 0-3 KB 06/06/01 1245 X 5% fine gravel, 90% coarse to fine sand, 5% silt, 0% clay. Dark brown, no odor or slag, occasional woody twig material, no other debris. 01234111 NU TS062 NU MJ0BM3 SD 0-7 KB 06/06/01 1130 X 0% gravel, 90% medium to fine sand, 0% silt, 10% clay. Dark brown, no odor or slag, frequent wood and charcoal fragments, no other debris. 01234123 NU TS063 JX803 MJ0BK3 SD 0-4 KB 06/08/01 1615 X X X 2% fine gravel, 10% coarse sand, 20% medium sand, 68% fine sand, 0% silt, 0% clay. Gray, no odor or slag. Frequent pine needles, no other debris. 01234127 NU TS064 JX807 MJ0BK7 SD 0-3.5 SMF 06/08/01 1120 X X X 5% gravel, 75% fine sand, 20% silt, <1% clay. Dry, grayish brown with abundant light cream-colored coarse sand and granules. "Soil" odor, no slag. Organics including rootlets and small woody pieces make up 20% of sample. 3-17 Page 13 of 18 ------- Table 3-1 SAMPLE COLLECTION AND ANALYTICAL SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID E & E Sample ID Station Location ID CLP Organic No. CLP Inorganic No. Matrix Depth Sampler Date Time TAL Metals Pesticide/ PCBs roc VOCs SVOCs Description WESTON Samples (continued) 01234125 NU TS065 JX805 MJ0BK5 SD 0-1 SMF 06/08/01 1130 X X X <1% gravel, 60% very fine to fine sand, 40% silt, <1% clay. Damp, "soil" odor. Grayish dark brown. Organics include rootlets, ants, twig fragments (1" long, 5 mm thick). No slag 01234126 NU TS066 NU MJ0BK6 SD 0-1.5 SMF 06/08/01 1245 X 0% gravel, 40% very fine sand, 55-60% silt, <5% clay. Saturated, grayish brown surface, dark gray beneath. H2S odor. Some rootlets and small worm. 01234066 NU TS067 JX567 MJ09G0 SD 0-2 KB 06/05/01 1345 X X X 10% fine gravel, 90% coarse to fine sand 0% silt, 0% clay, brown, no odor or slag. Occasional twigs, no other debris. 01234088 NU TS068 NU MJ0BK0 SD 0-1 KB 06/06/01 1030 X 10% fine gravel. 75% coarse to fine sand, 15% silt, 0% clay. Brown, no odor or slag, occasional twigs, no other debris. 01234092 NU TS069 NU MJ0BK4 SD 0-3 KB 06/05/01 1320 X 5% fine gravel, 95% medium sand, 0% silt, 0% clay. Light brown, no odor or slag, scattered roots and twigs, no other debris. 01234089 NU TS070 NU MJ0BK1 SD 0-8 KB 06/05/01 1530 X 0% gravel, 90% fine sand, 10% silt, 0% clay. Dark brown, no odor or slag, occasional twigs, no other debris. 01234090 NU TS071 NU MJ0BK2 SD 0-2 KB 06/05/01 1600 X 0% gravel, 85% medium to fine sand, 15% silt, 0% clay, brown, no odor or slag. Occasional twigs, no other debris. 01234091 NU TS072 JX568 MJ0BK3 SD 0-3 KB 06/05/01 1430 X X X 10% fine gravel, 90% coarse to fine sand 0% silt, 0% clay, brown, no odor, slightly magnetic possibly slag, occasional twigs, no other debris. 01234093 NU TS073 NU MJ0BK5 SD 0-3 KB 06/05/01 1145 X 0% gravel, 100% fine to medium sand, 0% silt, 0% clay. Brown, no odor or slag, occasional organics, no other debris. 01234094 NU TS074 NU MJ0BK6 SD 0-5 KB 06/05/01 1100 X 15% fine gravel, 75% coarse and fine sand, 10% silt, 0% clay, grayish brown, no odor or slag. No organics, no other debris. 01234095 NU TS075 JX569 MJ0BK7 SD 0-2 KB 6/5/011 0945 X X X 0% gravel, 100% fine to medium sand, 0% silt, 0% clay. Light brown, fine-grained black magnetic material, possible slag, occasional twigs, no other debris. 01214101 NU TS076 NU MJ0952 SD 0-1 SF 05/21/01 1715 X Silt with sand and clay. 0%gravel 20% sand 40% silt 20% clay. Tan brown, dry, no odor, no slag, roots and plant material. 01214103 NU TS077 NU MJ0953 SD 0-1 SF 05/22/01 1045 X 0% gravel, 5% sand, 10% silt, 85% organic matter, dark brown, roots, leaves. 01214105 NU TS078 NU MJ0954 SD 0-1 SF 05/22/01 1345 X 15% gravel, 50% sand, 35% silt, dark brown, no odor, roots and bulbs (small). 3-18 Page 14 of 18 ------- Table 3-1 SAMPLE COLLECTION AND ANALYTICAL SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID E & E Sample ID Station Location ID CLP Organic No. CLP Inorganic No. Matrix Depth Sampler Date Time TAL Metals Pesticide/ PCBs roc VOCs SVOCs Description WESTON Samples (continued) 01214107 NU TS079 NU MJ0955 SD 0-1 SF 05/22/01 1455 X 15% gravel, 50% sand, 35% silt, dark brown, no odor, roots and bone fragment, dry. 01214109 NU TS080 NU MJ0956 SD 0-1 SF 05/22/01 1550 X Trace to 0% gravel, 60% fine sand, 30% silt, 10% clay, mica, some organic debris, no odor or stain. 01214111 NU TS081 NU MJ0957 SD 0-1 SF 05/22/01 1705 X 0% gravel, 30% fine sand, 60% silt, 10% clay, lots of organics - leaves, roots, decaying smell. 01214113 NU TS082 NU MJ0958 SD 0-1 SF 05/22/01 1735 X Trace to 0% gravel, 30% fine sand, 40% silt, no odor, roots, etc. 01214115 NU TS083 NU MJ0959 SD 0-2 SF 05/23/01 1100 X Trace to 0% gravel, 40% fine sand, 30% fine silt, 30% organics. 01214117 NU TS084 NU MJ0960 SD 0-2 SF 05/23/01 1220 X 0% gravel, 95% sand, 5% or less silt, light tan brown, no odor, some organics (root, leaves) 01214119 NU TS085 NU MJ0961 SD 0-0.5 SF 05/23/01 1410 X 60% organics, 10% sand, 30% silt, trace clay, dark brown organics (roots, plants), no odor. 01214121 NU TS086 NU MJ0962 SD *** SF 05/23/01 1445 X 01214123 NU TS087 NU MJ0963 SD 0-1 SF 05/23/01 1555 X 10% gravel, 60% fine sand, 30% silt, light tan brown, organics (roots/leaves/sticks), dry. 01214125 NU TS088 NU MJ0964 SD 0-1 SF 05/23/01 1640 X 0% gravel, 60% sand, 35% silt, 5% clay, dark brown, organics (roots, leaves) no odor. 01214129 NU TS089 NU MJ0968 SD 0-2 SMF 05/23/01 1645 X 1% gravel, 90% sand, 10% silt, 0% clay, highly organic soil (no slag). 01234137 NU TS090 JX795 MJ0BJ5 SD 0-3 SMF 06/08/01 1645 X X X <5% gravel (angular granules), 85% predominantly angular very coarse to very fine sand, 10% silt, <1% clay. Saturated, dark grayish brown. Organics including rootlets, leaf debris, insect shells, and fines make up 20% or less of sample. 01234143 NU TS091 NU MJ0BJ2 SD 0-6 SMF 06/08/01 1545 X 0% gravel, 70% sand, 30% silt, <1% clay. Moist, medium brown, no odor, no slag. Organics including rootlets and fine humus material make up 50% of sample. 3-19 Page 15 of 18 ------- Table 3-1 SAMPLE COLLECTION AND ANALYTICAL SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID E & E Sample ID Station Location ID CLP Organic No. CLP Inorganic No. Matrix Depth Sampler Date Time TAL Metals Pesticide/ PCBs roc VOCs SVOCs Description WESTON Samples (continued) 01234138 NU TS092 JX796 MJ0BJ6 SD 0-1 SMF 06/08/01 1500 X X X 0% gravel, 60% coarse to very fine sand, 30% silt, <10% clay. Saturated. Medium brown to dark grayish brown. Minor organics as rootlets and woody fragments, but abundant fine organics. No odor, no slag. 01214127 NU TS093 NU MJ0967 SD 0-2 SMF 05/24/01 1215 X 0% gravel, 50% sand, 40% silt, 10% clay, moist, medium- dark brown, highly organic, no slag. 01214131 NU TS094 NU MJ0969 SD 0-2 SMF 05/24/01 1300 X 1% gravel as granules, 40% fine sand, 50% silt, 10% clay, moist, grayish brwon, 2% organics. No slag. 01214133 NU TS095 NU MJ0970 SD 0-2 SMF 05/24/01 1345 X 0% gravel, 60% sand, 40% silt, 0% clay, saturated, medium grayish brown , -10% organics, no slag. 01234139 NU TS096 JX797 MJ0BJ7 SD 0-5 KB 06/08/01 1145 X X X 5% fine gravel, 20% coarse sand, 25% medium sand, 40% fine sand, 10% silt, 0% clay. Brown, no odor or slag, occasional roots, no other debris. 01214135 NU TS097 NU MJ0971 SD 0-3 SMF 05/24/01 1615 X 0% gravel, 40% sand, 40% silt, 20% clay. Medium-dark gray, saturated. Cow manure and woody organics, and grass. No slag. 01214137 NU TS098 NU MJ0972 SD 0-3 SF 05/24/01 1530 X 01234140 NU TS099 JX798 MJ0BJ8 SD 0-4 KB 06/08/01 1300 X X X 0% gravel, 2% coarse sand, 15% medium sand, 80% fine sand, 3% silt, 0% clay. Dark brown, no odor or slag, occasional twigs and roots, no other debris. 01214139 NU TS100 NU MJ0973 SD 0-1.5 SF 05/24/01 1435 X 0% gravel, -60% organics, 30% sand, 10% silt, dark brown, roots, plant material. 01234141 NU TS101 JX799 MJ0BJ9 SD 0-4 KB 06/09/01 1030 X X X 3% fine gravel, 10% coarse sand, 50% medium sand, 27% fine sand, 10% silt, 0% clay. Brown, no odor or slag, 1% leaf debris, moss, and thin twig fragments. No other debris. 01214141 NU TS102 NU MJ0974 SD 0-1 SF 05/24/01 1325 X 0% gravel, 20% sand, 80% silt, light tan brown, roots and grasses, no odor. 01214143 NU TS103 NU MJ0975 SD 0-3 SF 05/24/01 1145 X 0% to trace gravel, 85% fine sand, 15% silt, all white limestone fragments, tan brown, wet, no odor, little organics. 01234142 NU TS104 JX800 MJ0BK0 SD 0-2 KB 06/09/01 0930 X X X 1% fine gravel, 70% fine sand, 25% silt, 5% clay. Dark brown, no odor or slag, scattered roots and small plants 1% of sample, no other debris. 01234122 NU TS105 JX802 MJ0BK2 SD 0-4 KB 06/08/01 1000 X X X 5% fine gravel, 15% medium sand, 80% fine sand, 0% silt, 0% clay. Light brown, no odor or slag, occasional roots, no other debris. 01224153 NU TS106 JX552 MJ0976 SD 0-2 SMF 05/31/01 1345 X X X 10% gravel (granules), 50% very fine to very coarse sand, 40% silt, 0% clay. Dry, grayish brown, minor plant material. No observed slag. 3-20 Page 16 of 18 ------- Table 3-1 SAMPLE COLLECTION AND ANALYTICAL SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID E & E Sample ID Station Location ID CLP Organic No. CLP Inorganic No. Matrix Depth Sampler Date Time TAL Metals Pesticide/ PCBs roc VOCs SVOCs Description WESTON Samples (continued) 01224152 NU TS107 NU MJ0977 SD 0-4 SMF 05/31/01 1300 X 10% gravel (granules), 50% very fine to fine sand, 30% silt, <10% clay. Dry, grayish brown, abundant rootlets and plant material. No observed slag. Some mollusc 01224156 NU TS108 JX553 MJ0978 SD 0-4.5 SMF 05/31/01 1545 X X X 0% gravel, 50% sand, 40% silt, 10% clay. Moist, dark grayish brown, abundant roots and plant organics, no odor, no observed slag. 01224161 NU TS109 JX554 MJ0979 SD 0-3 SMF 06/01/01 1100 X X X 5% gravel, 55% very coarse to very fine sand, 30% silt, 10% clay. Saturated, brownish gray. Some rootlets and organics. No odor, no slag. 01224165 NU TS110 JX555 MJ0980 SD 0-8 SMF 06/01/01 1330 X X X 1% gravel, 85% sand, 13% silt, 1% clay. High organic debris content and peat. No slag observed. 01264068 NU US001 JX827 MJ0BQ1 SD 0-3 KB 06/27/01 0900 X X X 10% fine gravel, 20% coarse sand, 40% medium sand, 25% fine sand, 5% silt, 0% clay. Brown, with lighter clasts. Occasional woody debris (5%). No odor or slag or other debris. 01264050 NU US005 JX810 MJ0BN3 SD 0-3 KB 06/25/01 0945 X X X 3% fine gravel, 5% coarse sand, 57% medium sand, 25% fine sand, 10% silt, 0% clay. Dark brown, no odor, slag, organics, or other debris. 01264051 NU US006 JX811 MJ0BN4 SD 0-3 KB 06/25/01 1315 X X X 10% fine gravel, 30% coarse sand, 45% medium sand, 10% fine sand, 5% silt, 0% clay. Grayish brown, no odor, slag, organics, or other debris. 01264054 NU US007 JX814 MJ0BN7 SD 0-4 KB 06/25/01 1445 X X X 0% gravel, 0% coarse sand, 20% medium sand, 30% fine sand, 40% silt, 10% clay). Brown, no odor, no slag. Scattered roots, no other debris. 01264055 NU US008 JX815 MJ0BN8 SD 0-6 KB 06/25/01 1500 X X X 0% gravel, 75% fine sand, 20% silt, 5% clay. Reddish brown, no odor or slag. Occasional roots, no other debris. 01264053 NU US009 JX813 MJ0BN6 SD 0-8 KB 06/25/01 1300 X X X 0% gravel, 5% coarse sand, 0% medium sand, 75% fine sand, 20% silt, 0% clay. Brown. No odor, no slag. Occasional roots, no other debris. 01264059 NU US010 JX819 MJ0BP2 SD 0-4 KB 06/25/01 1215 X X X 15% fine gravel, 45% coarse sand, 30% medium sand, 10% fine sand, 0% silt, 0% clay. Brown, no odor, slag, organics, or any other debris. 01264062 NU US011 JX822 MJ0BP5 SD 0-10 KB 06/26/01 1615 X X X 0% gravel, 0% sand, 95% silt, 5% clay. Dark brown, slight organic odor, no slag. 25% organic material as roots and leaves. No other debris. 01264060 NU US012 JX820 MJ0BP3 SD 0-1 KB 06/26/01 1230 X X X 0% gravel, 10% coarse sand, 50% medium sand, 35% fine sand, 5% silt, 0% clay. Brown. No odor, no slag, no organics, no other debris. 01264058 NU US013 JX818 MJ0BP1 SD 0-4 KB 06/26/01 1000 X X X 10% fine gravel, 10% coarse sand, 40% medium sand, 35% fine sand, 5% silt, 0% clay. Brown, no odor, no slag. No organics or any other debris. 3-21 Page 17 of 18 ------- Table 3-1 SAMPLE COLLECTION AND ANALYTICAL SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID E & E Sample ID Station Location ID CLP Organic No. CLP Inorganic No. Matrix Depth Sampler Date Time TAL Metals Pesticide/ PCBs roc VOCs SVOCs Description WESTON Si imples (con tinued) 01264069 NU UW001 NU MJ0BQ2 SW 0 KB 06/27/01 0930 X 01264052 NU UW004 NU MJ0BN5 sw 0 KB 06/25/01 1345 X 01264063 NU UW005 NU MJ0BP6 SW 0 KB 06/26/01 1600 X 01264061 NU UW006 NU MJ0BP4 sw 0 KB 06/26/01 1245 X 01264066 NU UW007 NU MJ0BP9 sw 0 KB 06/27/01 1645 X Key: AD = Adit water. NA = Neil Amick. AJ = A1 Johnson. No. = Number. AN = Anderson Calhoun Mine/Mill. NP = Napoleon Mine/Mill. BK = Background. NS = LeRoi Northport Smelter. BR = Black Rock Mine/Mill. NU = Not used. CG = Charlie Gregory. PCBs = Polychlorinated biphenyls. CK = Copper King Mine. PP = Probable point of entry. CK = Creek. RD = Red Top Mine CLP = Contract Laboratory Program. RL = Ralph Lambert. CS = Columbia River sediment. RN = Renee Nordeen. CW = Columbia River surface water. RS = Rinsate of sampling equipment. DC = Deep Creek Mine. S = sulfur DT = Daisy Mine. SD = Sediment. DT = Ditch. SF = Sonia Fernandez. DW = Dan Weiss. SL = Slag. E&E = Ecology and Environment, Inc. SMF = Susan FitzGerald. EP = Electric Point Mine/Mill. SS = Stained soil. EPA = United States Environmental Protection Agency. SS = Surface soil. GG = Guy Gregory. SVOCs = Semivolatile Organic Compounds. GL = Gladstone Mine/Mill. SW = Surface water. GW = Great Western Mine. SZ = Sierra Zinc Mine/Mill. H2S = hydrogen sulfide TAL = Target Analyte List. HZ = Howard Zorzi. TB = Trip blank. ID = Identification. TOC = Total Organic Carbon. IR = Iroquois Mine. TP = Tailings pile. JS = Jessica Spiegel. TS = Tributary sediment (downstream sampling location). KB = Kevin Broom. US = Tributary sediment/soil (upstream/upland sampling location). LB = L-Bar Northwest Magnesite. UW = Upland surface water. LC = Last Chance Mine/Mill. VOCs = Volatile Organic Compounds. ML = Melrose Mine. VS = Van Stone Mine/Mill. MS = Mill soil. WESTON = Roy F. Weston, Inc. MT = Monica Tonel. WP = Waste rock pile. MW = Mine pit water. MW = Mark Woodke. NA = Northwest Alloys. 3-22 Page 18 of 18 ------- 4. QUALITY ASSURANCE/QUALITY CONTROL QA/QC data are necessary to determine precision and accuracy and to demonstrate the absence of interferences and/or contamination of sampling equipment, glassware, and reagents. Specific QC requirements for laboratory analyses are incorporated in the Contract Laboratory Program Statement of Work for Organic Analyses (EPA 1999) and in the Contract Laboratory Program Statement of Work for Inorganic Analyses (EPA 2000b). These QC requirements or equivalent requirements found in the analytical methods were followed for analytical work on the upper Columbia River Mines and Mills PAs and Sis project. This section describes the QA/QC measures taken and provides an evaluation of the usability of data presented in this report. The QA/QC data memorandums regarding the samples collected by WESTON can be found in the Upper Columbia River/Lake Roosevelt Expanded Site Inspection Sampling and Quality Assurance Plan, TDD: 01-02-0001-A, EPA Contract: 68-S0-01-02. Prepared for the EPA Region 10 by WESTON, May 2001. All samples were collected following the guidance of the SQAP (E & E 2001) and the Sample Plan Alteration Forms for the field activities. Soil and water TAL metals analyses were performed at Sentinel, Inc., Huntsville, Alabama, a CLP laboratory, following CLP statement of work (SOW) ILM04.1. Soil SVOC and pesticide/PCBs analyses were performed at the EPA's Manchester Environmental Laboratory, Port Orchard, Washington, following EPA SW-846 Methods 8270 (SVOC analysis) and 8081/8082 (pesticide/PCBs analysis). Soil and water pesticide/PCBs analyses were performed at Envirosystems, Inc., Columbia, Maryland, a CLP laboratory, following CLP SOW OLM04.2. Soil and water SVOC and pesticide/PCBs analyses were performed at Mitkem Corporation, Warwick, Rhode Island, a CLP laboratory, following CLP SOW OLM04.2. Soil SVOC and pesticide/PCBs analyses were performed at Laucks Testing Laboratories, Inc., Seattle, Washington, a CLP laboratory, following CLP SOW OLM04.2. Sediment TOC analyses were performed by the E & E, Analytical Services Center, Lancaster, New York, a START-subcontracted commercial laboratory, following the Lloyd Kahn method. Soil field screening for copper, lead, and zinc was performed in the field by Environmental Services Assistance Team (ESAT) personnel following ESAT guidelines. 10:START-2\01020028\S759 4-1 ------- Data from the CLP laboratories were reviewed and validated by EPA and/or ESAT chemists. Data from the ST ART -subcontracted commercial laboratory were reviewed and validated by E & E chemists. Data qualifiers were applied as necessary according to the following guidance: EPA (1990) Quality Assurance/Quality Control Guidance for Removal Activities, Sampling QA/QC Plan and Data Validation Procedures; EPA (1994a) Contract Laboratory Program National Functional Guidelines for Inorganic Data Review; and EPA (1999a) Contract Laboratory Program National Functional Guidelines for Organic Data Review. In the absence of other QC guidance, method-specific QC limits were also utilized to apply qualifiers to the data. Copies of the data QA memoranda are included in Appendix D. 4.1 SATISFACTION OF DATA QUALITY OBJECTIVES The following EPA (1994b) guidance document was used to establish data quality objectives (DQOs) for this project: Data Quality Objectives Process for Superfund, Interim Final Guidance, EPA 600-R-96-055. The EPA Task Monitor (TM) determined that definitive data without error and bias determination would be used for the sampling and analyses conducted during the field activities. The data quality achieved during the fieldwork produced sufficient data that meets the DQOs stated in the SQAP (E & E 2001). A detailed discussion of accomplished project objectives is presented in the following sections. 4.2 QUALITY ASSURANCE/QUALITY CONTROL SAMPLES QA samples included rinsate blank samples. Trip blank samples were not collected as volatile organic compound analyses were not performed. Rinsate blank samples collected from sample collection equipment were submitted for the project. QC samples included matrix spike/matrix spike duplicate (MS/MSD) samples for organic analyses or MS/duplicate samples for inorganic analyses at a rate of one MS/MSD or one MS/duplicate per 20 samples per matrix. 10:START-2\01020028\S759 4-2 ------- 4.3 PROJECT-SPECIFIC DATA QUALITY OBJECTIVES The laboratory data were reviewed to ensure that DQOs for the project were met. The following describes the laboratories' abilities to meet project DQOs for precision, accuracy, and completeness and the field team's ability to meet project DQOs for representativeness and comparability. The laboratories and the field team were able to meet DQOs for the project. 4.3.1 Precision Precision measures the reproducibility of the sampling and analytical methodology. Laboratory and field precision is defined as the relative percent difference (RPD) between duplicate sample analyses. The laboratory duplicate samples or MS/MSD samples measure the precision of the analytical method. The RPD values were reviewed for all commercial laboratory samples. A total of 161 sample results (approximately 1.5% of the data) were qualified as estimated quantities (J or UJ) based on laboratory duplicate QC outliers. The DQO for precision of 85% was met. 4.3.2 Accuracy Accuracy measures the reproducibility of the sampling and analytical methodology. Laboratory accuracy is defined as the surrogate spike percent recovery (%R) for each SVOC or pesticide/PCBs analysis or the MS %Rs for all fixed laboratory analyses. The surrogate %R values were reviewed for all appropriate sample analyses. No sample results were qualified based on surrogate QC outliers. The MS %R values were reviewed for all MS/MSD analyses. A total of 463 sample results (approximately 4.4% of the data) were qualified as estimated quantities (J) based on spike QC outliers. A total of 161 sample results (approximately 1.5% of the data) were rejected (R) based on spike QC outliers. Overall, the project DQO for accuracy of 85% was met. 4.3.3 Completeness Data completeness is defined as the percentage of usable data (usable data divided by the total possible data). All laboratory data were reviewed for data validation and usability. A total of 29 sample results (approximately 0.2% of the data) were rejected (R), therefore the project DQO for completeness of 90% was met. 10:START-2\01020028\S759 4-3 ------- 4.3.4 Representativeness Data representativeness expresses the degree to which sample data accurately and precisely represent a characteristic of a population, parameter variations at a sampling point, or environmental condition. The number and selection of samples were determined in the field to account accurately for site variations and sample matrices. The DQO for representativeness of 85% was met. 4.3.5 Comparability Comparability is a qualitative parameter expressing the confidence with which one data set can be compared to another. Data produced for this site followed applicable field sampling techniques and specific analytical methodology. The DQO for comparability was met. 4.4 LABORATORY QUALITY ASSURANCE/QUALITY CONTROL PARAMETERS The laboratory data also were reviewed for holding times and laboratory blank samples. These QA/QC parameters are summarized below. In general, the laboratory and field QA/QC parameters were considered acceptable. 4.4.1 Holding Times A total of 4 sample results (approximately 0.04% of the data) were qualified as estimated quantities (J or UJ) based on holding time outliers. 4.4.2 Laboratory Blanks All laboratory blanks met the frequency criteria. The following potential COCs were detected in the laboratory blanks resulting in qualifications: SVOCs: bis(2-ethylhexyl)phthalate; and TAL Metals: aluminum, antimony, arsenic, barium, beryllium, cadmium, calcium, chromium, cobalt, copper, iron, lead, magnesium, manganese, nickel, potassium, selenium, sodium, silver, thallium, vanadium, and zinc. Four SVOC results and 361 TAL metals results were qualified based on laboratory blank contamination. Associated sample results less than five times positive blank contamination (10 times for common laboratory contaminants) were qualified as not detected (U). Associated sample results less 10:START-2\01020028\S759 4-4 ------- than five times the absolute value of negative TAL metals blank contamination were qualified as estimated quantities (J or UJ). Two TOC results were also qualified as not detected (U) based on laboratory blank contamination. See Appendix D for results that were qualified based on laboratory blank contamination. 10:START-2\01020028\S759 4-5 ------- 5. ANALYTICAL RESULTS REPORTING AND BACKGROUND SAMPLES This section describes the reporting criteria and reporting methods applied to EPA CLP analytical results presented in Sections 6 and 7 of this report. A discussion of background sample locations and results also is provided. A list of all samples collected for laboratory analysis is presented in T able 3 -1. 5.1 ANALYTIC AL RES ULTS EVALUAHO N C RITERIA Analytical results presented in the summary tables in Sections 6 and 7 show all analytes detected above laboratory detection limits in bold type. Analytical results indicating significant concentrations of contaminants in source samples (Section 6) with respect to background concentrations are shown underlined and in bold type. Similarly, analytical results indicating elevated concentrations of contaminants in target samples (Section 7) with respect to background concentrations also are underlined and in bold type. For the purposes of this investigation, significant/elevated concentrations are defined, using Table 2-3 of the EPA HRS model criteria for observed releases or observed contamination (significant or elevated concentrations) as follows. Equal to or greater than the sample's Contract Required Quantitation Limit/Contract Required Detection Limit (CRQL/CRDL) or the sample quantitation limit (SQL) when a non-CLP laboratory was used; and Equal to or greater than the background sample's CRQL/CRDL or SQL when the background concentration is below detection limits; or At least three times greater than the background concentration when the background concentration equals or exceeds the detection limit. The analytical summary tables present all detected analytes, but only those detected analytes (specifically arsenic, cadmium, lead, mercury, and zinc) at potential sources or in targets meeting the significant/elevated concentration criteria are discussed in the report text. All detected concentrations are discussed for background samples, including those concentrations which were qualified as estimated because they were detected below the SQL (JB). Because both tailings and waste rock are unique soil 10:START-2\01020028\S759 5-1 ------- waste matrices placed on surface soil, analytical results of the tailings and waste rock samples collected were compared to the results for background surface soil. The background surface soil samples consisted of native soil. Two sediment samples were collected from the Kettle River (KRBK01SD and KRBK02SD). KRBKO1SD was collected near the Box Canyon-Deep Creek Road along the Kettle River. KRBK02SD was collected along the bank of the Kettle River just south of the U.S.-Canada border. Since these samples were collected outside the project study area they will not be discussed in this report. However, analytical results for these two samples are provided in Appendix E. Analytical results are qualified as estimated (J) when the analyte is positively identified as either present or absent based on the QC data provided by the laboratory. The associated numerical value is the approximate concentration of the analyte in the sample. Additional qualifiers were applied when necessary to indicate potential bias of estimated quantities including low, unknown, high, or when the result was estimated because it was below the SQL: B = The detected concentration is below the method reporting limit/CRDL, but is above the instrument detection limit; H = The numerical result is likely biased high, above the actual concentration; L = The numerical result is likely biased low, below the actual concentration; K = The bias of the numerical value is unknown; and Q = The detected concentration is below the method reporting limit/CRQL, but is above the method detection limit. For comparison purposes, the SQL is provided in parenthesis for background results that are qualified because they are below the SQL. When samples were diluted for reanalysis at a laboratory, the dilution results were considered for evaluation and are provided in the tables. For target locations, only those analytes that also were detected in a source at the mine and mill sites were evaluated to determine whether their concentrations were elevated. All hazardous substances detected using EPA CLP results at target locations and meeting evaluation criteria can be used to document an observed release from the source at the mines and mills to the target. Based on the EPA Region 10 policy, evaluation of the common earth crust elements (aluminum, calcium, iron, magnesium, potassium, and sodium) is generally employed only in water mass tracing, which is beyond the scope of this report. For this reason, these elements and results will not be discussed in this report, but are presented in the analytical results summary tables when detected. 10:START-2\01020028\S759 5 -2 ------- 5.2 BACKGROUND SAMPLES Background samples were collected for each of the naturally occurring medium from which samples were collected. Those media are surface soil and sediment. A background surface water sample is not presented in this report since all surface water sample results discussed are from sources of contamination which do not require comparison to background concentrations. Results for the appropriate background sample(s) appear as the first column(s) in the analytical results summary tables in Sections 6 and 7 for comparison against source or target results. 5.2.1 Background Surface Soil 5.2.1.1 Sample Locations Mine and mill-specific background surface soil samples were collected for the Daisy Mine (DTBK01SS; Figure 6-2), the LeRoi/Northport Smelter (NSBK02SS; Figure 6-17), the Anderson Calhoun Mine/Mill (ANBK02SS; Figure 6-38), and the Van Stone Mine/Mill (US007, US008, and US009; Appendix H). DTBKOlSSwas located approximately 60 feet north and upgradient from Daisy Mine. NSBK02SS was collected south of the LeRoi/Northport Smelter. ANBK02SS was located east and upgradient of the Anderson Calhoun Mine/Mill. US007, US008, and US009 were collected upgradient of the Van Stone Mine/Mill. In addition, six background surface soil samples (BKOlSSand BK04SS through BK08SS) were collected from locations within the general project area (Figure 5-1). Sample locations are listed in Table 3-1. BKOlSSwas located south of the Comfort Inn in Colville. BK04SS was located approximately 2.2 miles on Black Canyon Road, upgradient of mining activity. BK05SS was located approximately 200 yards off the unnamed road leading toward residences south of Deep Creek Mine. BK06SS was located approximately 1.5 miles upgradient from Magma Mine and near the unnamed road. BK07SS was located along Silver Creek Road. BK08SS was located upgradient from Iroquois Mine. The surface soil samples were collected from 0 to 6 inches bgs. The matrix of the samples appeared similar to that of the native soil observed at the mines and mills. For those mines and mills were site-specific background soil samples were unobtainable due to accessibility and safety concerns, background analyte concentrations for those mine and mill sites were established using the highest analyte concentration from all background soil samples collected. These assignments were determined by the EPA TM. Refer to Table 5-1. 10:START-2\01020028\S759 5-3 ------- Background concentrations of TAL metals, pesticide/PCBs, TOC, and SVOCs will be compared to source and target sample concentrations, as described in Sections 6 and 7. The purpose of the comparison is to determine if concentrations of substances found in source and target samples are significant/elevated with respect to background concentrations as defined, using the EPA HRS model criteria. 5.2.1.2 Sample Results Refer to T able 5-1 and 5-3 for E & E and WEST ON sample results, respectively. 5.2.2 Background Sediment 5.2.2.1 Sample Locations Seven background sediment locations were sampled within the project area. Sample locations are listed in T able 3 -1. LBBKO1SD was located downstream of the confluence of Logan Road ditch and the unnamed ditch adjacent to L-Bar/Northwest Magnesite and reflects background concentrations for the West Ditch sampled at L-Bar/Northwest Magnesite. LBBK02SD was located on the Colville River near the Burlington Railroad and U.S. 395 and reflects background concentrations for the probable point of entry (PPE) sample to surface water at L-Bar/Northwest Magnesite (Figure 6-4). NABK01SD was located on Stensgar Creek approximately 60 feet west of the confluence of Stensgar Creek and the Columbia River and reflects background concentrations for Stensgar Creek and the ditch sampled near Northwest Alloys. NABK02SD was located approximately 30 feet south of the confluence of Stensgar Creek and the Colville River and reflects background concentrations for the Colville River sampled near Northwest Alloys (Figure 6-6). NPBKO1 SD was located upstream and upgradient in the unnamed creek near Napoleon Mine/Mill and reflects background concentrations for the unnamed creek sampled at Napoleon Mine/Mill (Figure 6-8). NSBKO1 SD was located south of the LeRoi/Northport Smelter along the unnamed creek near Northport-Waneta Road and reflects background concentrations for the unnamed creek sampled at the LeRoi/Northport Smelter (Figure 6-17). The analytical results of a sediment sample collected in May of 2001 by Ecology at Lower Arrow Lake in Canada (sample number 01198040) will be used to establish background concentrations for the sediment samples collected along the Columbia River (Figure 6-18). 10:START-2\01020028\S759 5-4 ------- ANBK01SD was located approximately 200 yards south of the Anderson Calhoun Mine/Mill on the unnamed creek which flows through the site. ANBKO1SD reflects background concentrations for the unnamed creek sampled at the Anderson Calhoun Mine/Mill (Figure 6-38). For those mine and mill sites where site-specific background sediment samples were unobtainable due to accessibility and safety concerns, background analyte concentrations were established using the highest analyte concentration from all background sediment samples collected. These assignments were determined by the EPA TM. Refer to Table 5-2. Sediment samples were collected at the following locations by WESTON (Appendix H): Tributary to Tom Bush Creek and Melrose Mine (US001); Unnamed tributary to Onion Creek and Van Stone Mine/Mill (US005); Unnamed tributary to Onion Creek and Van Stone Mine/Mill (US006); Unnamed tributary to Onion Creek and Van Stone Mine/Mill (US010); Tributary to Black Rock Mine/Mill, Great Western Mine, and Last Chance Mine/Mill approximately 1 mile upgradient and across Deep Creek Mine (US011); Deep Creek South Fork approximately 7 miles upstream for Copper King Mine and Sierra Zinc Mine/Mill (US012); and Unnamed tributary to Deep Creek (US013). 5.2.2.2 Sample Results Refer to T able 5-2 and 5-3 for E & E and WEST ON sediment sample results, respectively. 10:START-2\01020028\S759 5-5 ------- Table 5-1 SURFACE SOIL BACKGROUND SAMPLES ANALYTICAL RESULTS SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID 01374163 01374188 01374189 01264251 01264275 01264276 01264279 01264280 01264281 CLP Inorganic ID MJ0KH2 MJ0KK6 MJ0KK7 MJ0EZ6 MJ0F21 MJ0F22 MJ0F25 MJ0F26 MJ0F27 CLP Organic ID NU NU NU J0EZ6 NU NU NU NU NU Highest E&E Sample ID NU NU NU NU NU NU NU NU NU Background Station Location DTBK01SS NSBK02SS ANBK02SS BK01SS BK04SS BK05SS BK06SS BK07SS BK08SS Concentration Sample Depth (inches) 0-6 0-6 0-6 0-6 0-6 0-6 0-6 0-6 0-6 TAL Metals (mg/kg) Aluminum 18100 4810 16400 14200 11100 13500 9330 10200 11500 18100 Antimony 1.9 JB (12.7 SQL) 1.5 JB (15.1 SQL) 2.8 JB (13.1 SQL) 0.62 UJK 3.4 U 1.3 U 1.2 U 1.3 U 2.1 U 1.5 JB (15.1 SQL) Arsenic 68.2 2.6 JL 8.3 JL 6.9 7.3 2.4 JB (2.5 SQL) 1.1 JB (2.3 SQL) 4.9 7.1 68.2 Barium 168 194 470 265 548 273 93.4 108 109 548 Beryllium 0.89 JB (1.06 SQL) 0.09 JB (1.3 SQL) 0.31 JB (1.1 SQL) 0.62 JB (1.0 SQL) 0.38 JB (1.4 SQL) 0.48 JB (6.3 SQL) 0.32 JB (1.2 SQL) 0.34 JB (1.2 SQL) 0.45 JB (1.1 SQL) 0.48 JB (6.3 SQL) Cadmium 4.8 1.3 3.4 0.06 U 7.8 0.47 JB (6.3 SQL) 0.05 U 0.48 JB (1.2 SQL) 0.61 JB (1.1 SQL) 7.8 Calcium 5420 90500 JK 8210 JK 24300 4500 3290 1140 JB 91600 118000 118000 Chromium 13.9 17.6 16.5 29.0 20.9 16.1 5.6 13.8 13.0 29.0 Cobalt 14.7 2.9 JB (12.6 SQL) 6.0 JB (10.9 SQL) 10.1 JB (10.3 SQL) 9.3 JB (14.1 SQL) 8.6 JB (63 SQL) 3.0 JB (11.8 SQL) 6.9 JB (12.2 SQL) 7.4 JB (11.4 SQL) 8.6 JB (63 SQL) Copper 55.2 17.3 11.8 31.0 JL 47.4 JL 9.4 JL 7.5 JL 20.0 JL 22.1 JL 55.2 Iron 25200 7690 19602 24700 23400 17800 9490 18000 16800 25200 Lead 183 57.0 152 17.4 27.5 27.8 6.8 24.6 28.0 183 Magnesium 4110 3520 4160 11700 5470 4020 1540 17900 8060 17900 Manganese 1070 152 922 597 370 1370 151 354 1160 1370 Mercury 0.06 JB (0.11 SQL) 0.06 U 0.05 U 0.05 U 0.07 U 0.06 U 0.05 U 0.06 U 0.06 U 0.06 JB (0.11 SQL) Nickel 16.1 8.0 JB (10.1 SQL) 14.4 33.8 58.4 14.3 4.9 JB (9.4 SQL) 21.1 16.4 58.4 Potassium 1300 JK 897 JB 11660 2930 2610 2770 1000 JB 1690 1900 11660 Selenium 1.5 JL 1.1 JB (1.3 SQL) 0.74 U 0.70 U 2.4 U 0.86 U 0.79 U 0.83 U 0.78 U 1.5 JL Silver 6.7 0.57 JB (2.5 SQL) 1.3 JB (2.2 SQL) 0.91 JB (2.1 SQL) 1.6 JB (2.8 SQL) 0.75 U 0.46 JB (2.4 SQL) 0.63 JB (2.4 SQL) 0.54 JB (2.3 SQL) 6.7 Sodium 129 JB 255 JB 201 JB 216 JB 318 JB 369 JB 269 JB 377 JB 3308 JB 3308 JB Thallium 1.1 U 1.3 U 1.1 U 0.80 UJK 1.4 U 1.3 U 1.2 U 1.2 U 1.2 U 1.4 U Vanadium 41.9 13.8 27.4 51.2 50.8 22.9 18.2 26.4 16.6 51.2 Zinc 462 60.9 835 115 JH 502 110 30.1 81.8 75.5 835 5-6 ------- Table 5-1 SURFACE SOIL BACKGROUND SAMPLES ANALYTICAL RESULTS SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID 01374163 01374188 01374189 01264251 01264275 01264276 01264279 01264280 01264281 CLP Inorganic ID MJ0KH2 MJ0KK6 MJ0KK7 MJ0EZ6 MJ0F21 MJ0F22 MJ0F25 MJ0F26 MJ0F27 CLP Organic ID NU NU NU J0EZ6 NU NU NU NU NU Highest E&E Sample ID NU NU NU NU NU NU NU NU NU Background Station Location DTBK01SS NSBK02SS ANBK02SS BK01SS BK04SS BK05SS BK06SS BK07SS BK08SS Concentration Sample Depth (inches) 0-6 0-6 0-6 0-6 0-6 0-6 0-6 0-6 0-6 Pesticide/PCBs (Hg/kg) 4,4'-DDD NU NU NU 3.5 U NU NU NU NU NU 3.5 U 4,4'-DDE NU NU NU 3.5 U NU NU NU NU NU 3.5 U 4,4'-DDT NU NU NU 3.5 U NU NU NU NU NU 3.5 U Aldrin NU NU NU 1.8 U NU NU NU NU NU 1.8 U Alpha-BHC NU NU NU 1.8 U NU NU NU NU NU 1.8 U Alpha-Chlordane NU NU NU 1.8 U NU NU NU NU NU 1.8 U Aroclor-1016 NU NU NU 35 U NU NU NU NU NU 35 U Aroclor-1221 NU NU NU 71 U NU NU NU NU NU 71 U Aroclor-1232 NU NU NU 35 U NU NU NU NU NU 35 U Aroclor-1242 NU NU NU 35 U NU NU NU NU NU 35 U Aroclor-1248 NU NU NU 35 U NU NU NU NU NU 35 U Aroclor-1254 NU NU NU 35 U NU NU NU NU NU 35 U Aroclor-1260 NU NU NU 35 U NU NU NU NU NU 35 U Beta-BHC NU NU NU 1.8 U NU NU NU NU NU 1.8 U Delta-BHC NU NU NU 1.8 U NU NU NU NU NU 1.8 U Dieldrin NU NU NU 3.5 U NU NU NU NU NU 3.5 U Endosulfan I NU NU NU 1.8 U NU NU NU NU NU 1.8 U Endosulfan II NU NU NU 3.5 U NU NU NU NU NU 3.5 U Endosulfan Sulfate NU NU NU 3.5 U NU NU NU NU NU 3.5 U Endrin NU NU NU 3.5 U NU NU NU NU NU 3.5 U Endrin Aldehyde NU NU NU 3.5 U NU NU NU NU NU 3.5 U Endrin Ketone NU NU NU 3.5 U NU NU NU NU NU 3.5 U Gamma-BHC(Lindane) NU NU NU 1.8 U NU NU NU NU NU 1.8 U Gamma-Chlordane NU NU NU 1.8 U NU NU NU NU NU 1.8 U Heptaehlor NU NU NU 1.8 U NU NU NU NU NU 1.8 U Heptaehlor Epoxide NU NU NU 1.8 U NU NU NU NU NU 1.8 U Methoxychlor NU NU NU 18 U NU NU NU NU NU 18 U Toxaphene NU NU NU 180 U NU NU NU NU NU 180 U 5-7 ------- Note: Bold type indicates sample concentration is above the detection limit. Key: AN = Anderson/Calhoun Mine/Mill. B = The reported concentration is between the instrument detection limit and the contract required detection limit. BK = Background. CLP = Contract Laboratory Program. DT = Daisy Mine. E & E = Ecology and Environment, Inc. EPA = United States Environmental Protection Agency. H = High bias. ID = Identification. J = The analyte was positively identified. The associated numerical value is an estimate. K = Unknown bias. L = Low bias. mg/kg = Milligrams per kilogram. fj.g/kg = Micrograms per kilogram. NS = LeRoi/Northport Smelter. NU = Not utilized. PCBs = Polychlorinated biphenyls. SQL = Sample quantitation limit. SS = Surface soil. TAL = Target Analyte List. U = The analyte was not detected. The associated numerical value is the contract required detection limit. 5-8 ------- Table 5-2 SEDIMENT BACKGROUND SAMPLES ANALYTICAL RESULTS SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID 01374104 01374111 01374108 01374109 01374114 01374187 01374181 CLP Inorganic ID MJ0KC4 MJ0KD2 MJ0KC8 MJ0KC9 MJ0KD5 MJ0KK5 MJ0KJ5 CLP Organic ID J0KC4 J0KD2 J0KC8 J0KC9 J0KD4 J0KJ3 J0KH3 Highest E & E Sample ID 01090404 01030411 01090408 01090409 01090413 01090432 01090427 Background Station Location LBBK01SD LBBK02SD NABK01SD NABK02SD NPBK01SD NSBK01SD ANBK01SD Concentration Sample Depth (inches) 0-8 0-8 0-8 0-8 0-8 0-8 0-6 TAL Metals (mg/kg) Aluminum 20200 3960 2080 13100 6980 2740 4070 20200 Antimony 1.3 JB 0.85 JB 0.71 U 0.86 U 1.0 JB 0.73 UJL 2.1 U 0.85 JB (12.3 SQL) (14.9 SQL) (12.8 SQL) (14.9 SQL) Arsenic 12.1 2.8 1.1 UJK 4.3 JK 13.0 1.2 UJL 2.7 JB 13.0 (3.3 SQL) Barium 450 63.0 34.0 JB 205 83.2 145 101 450 (48.8 SQL) Beryllium 0.63 JB 0.10U 0.08 U 0.45 JB 0.23 JB 0.03 JB 0.27 U 0.45 JB (1.0 SQL) (1.49 SQL) (1.07 SQL) (1.3 SQL) (1.49 SQL) Cadmium 3.4 0.05 U 0.05 U 0.06 UJK 0.04 UJK 0.26 JB 1.2 JB 3.4 (1.3 SQL) (1.7 SQL) Calcium 39600 5740 2730 4940 56700 90700 JK 109000 109000 Chromium 32.3 6.8 5.4 24.7 22.0 7.6 9.9 32.3 Cobalt 11.9 4.7 JB 2.2 JB 10.5 JB 5.9 JB 1.7 JB 2.6 JB 11.9 (12.4 SQL) (12.2 SQL) (14.9 SQL) (10.7 SQL) (12.6 SQL) (16.7 SQL) Copper 69.3 6.5 2.8 JB 21.3 JK 47.6 6.8 6.9 JB 69.3 (6.1 SQL) (8.3 SQL) Iron 27900 10200 5590 27900 20300 6560 9200 27900 Lead 124 4.5 2.0 13.8 13.1 16.6 15.3 JK 124 Magnesium 33500 3720 1430 6940 4660 2600 3780 33500 Manganese 673 144 91.7 507 293 87.3 239 673 Mercury 0.10 JB 0.06 U 0.06 U 0.07 U 0.05 U 0.06 U 0.08 U 0.10 JB (0.102 SQL) (0.102 SQL) Nickel 31.9 7.0 JB 3.6 JB 25.4 18.9 4.1 JB 10.8 JB 31.9 (9.9 SQL) (9.8 SQL) (10.1 SQL) (13.4 SQL) Potassium 3920 JK 603 JB 605 JB 2550 JK 899 JB 485 JB 410 JB 3920 JK Selenium 0.70 UJL 0.84 UJL 0.83 UJL 1.0 U 0.72 UJL 0.86 U 1.4 JB 1.4 JB (1.7 SQL) (1.7 SQL) Silver 1.5 JB 0.74 JB 0.30 U 1.8 JB 1.1 JB 0.15 U 1.0 U 1.8 JB (2.04 SQL) (2.5 SQL) (3.0 SQL) (2.1 SQL) (3.0 SQL) Sodium 597 JB 162 JB 151 JB 229 JB 155 JB 175 JB 557 JB 597 JB Thallium 1.0 U 1.3 U 1.2 U 1.5 U 1.1 U 1.3 U 0.67 U 1.5 U Vanadium 47.4 10.9 JB 8.9 JB 36.9 25.8 14.6 15.9 JB 47.4 (12.4 SQL) (12.2 SQL) (16.7 SQL) Zinc 239 26.5 10.8 78.2 62.2 26.4 76.3 239 5-9 ------- Table 5-2 SEDIMENT BACKGROUND SAMPLES ANALYTICAL RESULTS SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID 01374104 01374111 01374108 01374109 01374114 01374187 01374181 CLP Inorganic ID MJ0KC4 MJ0KD2 MJ0KC8 MJ0KC9 MJ0KD5 MJ0KK5 MJ0KJ5 CLP Organic ID J0KC4 J0KD2 J0KC8 J0KC9 J0KD4 J0KJ3 J0KH3 Highest E & E Sample ID 01090404 01030411 01090408 01090409 01090413 01090432 01090427 Background Station Location LBBK01SD LBBK02SD NABK01SD NABK02SD NPBK01SD NSBK01SD ANBK01SD Concentration Sample Depth (inches) 0-8 0-8 0-8 0-8 0-8 0-8 0-6 Pesticide/PCBs (Hg/kg) 4,4'-DDD 3.5 U 4.0 U 3.8 U 5.3 U 3.6 U 4.2 U 5.1 U 5.3 U 4,4'-DDE 3.5 U 4.0 U 3.8 U 5.3 U 3.6 U 4.2 U 5.1 U 5.3 U 4,4'-DDT 3.5 U 4.0 U 3.8 U 5.3 U 3.6 U 4.2 U 5.1 U 5.3 U Aldrin 1.8 U 2.1 U 2.0 U 2.7 U 1.9 U 2.2 U 2.6 U 2.7 U Alpha-BHC 1.8 U 2.1 U 2.0 U 2.7 U 1.9 U 2.2 U 2.6 U 2.7 U Alpha-Chlordane 1.8 U 2.1 U 2.0 U 2.7 U 1.9 U 2.2 U 2.6 U 2.7 U Aroclor-1016 35 U 40 U 38 U 53 U 36 U 42 U 51 U 53 U Aroclor-1221 71 U 82 U 78 U 110U 74 U 86 U 100 U 110U Aroclor-1232 35 U 40 U 38 U 53 U 36 U 42 U 51 U 53 U Aroclor-1242 35 U 40 U 38 U 53 U 36 U 42 U 51 U 53 U Aroclor-1248 35 U 40 U 38 U 53 U 36 U 42 U 51 U 53 U Aroclor-1254 35 U 40 U 38 U 53 U 36 U 42 U 51 U 53 U Aroclor-1260 35 U 40 U 38 U 53 U 36 U 42 U 51 U 53 U Beta-BHC 1.8 U 2.1 U 2.0 U 2.7 U 1.9 U 2.2 U 2.6 U 2.7 U Delta-BHC 1.8 U 2.1 U 2.0 U 2.7 U 1.9 U 2.2 U 2.6 U 2.7 U Dieldrin 3.5 U 4.0 U 3.8 U 5.3 U 3.6 U 4.2 U 5.1 U 5.3 U Endosulfan I 1.8 U 2.1 U 2.0 U 2.7 U 1.9 U 2.2 U 2.6 U 2.7 U Endosulfan II 3.5 U 4.0 U 3.8 U 5.3 U 3.6 U 4.2 U 5.1 U 5.3 U Endosulfan Sulfate 3.5 U 4.0 U 3.8 U 5.3 U 3.6 U 4.2 U 5.1 U 5.3 U Endrin 3.5 U 4.0 U 3.8 U 5.3 U 3.6 U 4.2 U 5.1 U 5.3 U Endrin Aldehyde 3.5 U 4.0 U 3.8 U 5.3 U 3.6 U 4.2 U 5.1 U 5.3 U Endrin Ketone 4.0 4.0 U 3.8 U 5.3 U 3.6 U 4.2 U 5.1 U 4.0 Gamma-BHC(Lindane) 1.8 U 2.1 U 2.0 U 2.7 U 1.9 U 2.2 U 2.6 U 2.7 U Gamma-Chlordane 1.8 U 2.1 U 2.0 U 2.7 U 1.9 U 2.2 U 2.6 U 2.7 U Heptachlor 2.0 U 2.1 U 2.0 U 2.7 U 1.9 U 2.2 U 2.6 U 2.7 U Heptachlor Epoxide 1.8 U 2.1 U 2.0 U 2.7 U 1.9 U 2.2 U 2.6 U 2.7 U Methoxychlor 18 U 21 U 20 U 27 U 19 U 22 U 26 U 27 U Toxaphene 180 U 210 U 200 U 270 U 190 U 220 U 260 U 270 U 5-10 ------- Note: Bold type indicates sample concentration is above the detection limit. Key: AN = Anderson/Calhoun Mine/Mill. B = The reported concentration is between the instrument detection limit and the contract required detection limit. BK = Background. CLP = Contract Laboratory Program. E & E = Ecology and Environment, Inc. EPA = United States Environmental Protection Agency. ID = Identification. J = The analyte was positively identified. The associated numerical value is an estimate. K = Unknown bias. KR = Kettle River. L = Low bias. LB = L-Bar. mg/kg = Milligrams per kilogram. (xg/kg = Micrograms per kilogram. NA = Northwest Alloys. NP = Napoleon Mine. NS = Northport Smelter. NU = Not utilized. PCBs = Polychlorinated biphenyls. SD = Sediment. SQL = Sample quantitation limit. TAL = Target analyte list. U = The analyte was not detected. The associated numerical value is the contract required detection limit. 5-11 ------- Table 5-3 ROY F. WESTON, INC. BACKGROUND SEDIMENT SAMPLES ANALYTICAL RESULTS SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID 01264068 01264070 01264073 01264075 01264050 01264051 01264054 01264055 01264053 01264059 01264062 01264060 01264058 CLP Inorganic ID MJ0BQ1 MJ0BQ3 MJ0BQ5 MJ0BQ7 MJ0BN3 MJ0BN4 MJ0BN7 MJ0BN8 MJ0BN6 MJ0BP2 MJ0BP5 MJ0BP3 MJ0BP1 CLP Organic ID JX827 JX829 JX831 JX832 JX810 JX811 JX814 JX815 JX813 JX819 JX822 JX820 JX818 WESTON Sample ID BK-150-SD BK-152-SD BK-153-SD BK-155-SD BK-130-SD BK-131-SD BK-134-SD BK-135-SD BK-133-SD BK-139-SD BK-142-SD BK-140-SD BK-138-SD Station Location US001 US002 US003 US004 US005 US006 US007 US008 US009 US010 US011 US012 US013 Sample Depth (inches) 0-3 0-2 0-4 0-2 0-3 0-3 0-4 0-6 0-8 0-4 0-10 0-1 0-4 TAL Metals (mg/kg) Arsenic 6.7 1.5 JB 0.47 U 2.6 1.9 JB 1.3 JB 4.5 7 1.5 JB 0.51 U 2.4 UJK 1.2 JB 0.89 JB Cadmium 46.2 JK 0.35 JB 0.05 UJK 0.38 JB 0.06 JB 0.05 UJK 0.28 JB 3.3 JK 0.05 UJK 0.05 UJK 1.7 JB 0.05 UJK 0.05 UJK Lead 20.3 6.4 5 14.8 2.7 8 19.2 139 8.4 5.4 16.1 JK 3.3 6.4 Mercury 0.08 U 0.08 U 0.06 U 0.06 U 0.07 U 0.06 U 0.07 U 0.07 U 0.06 U 0.06 U R 0.06 U 0.06 U Zinc 1880 60 49 54.7 18.3 20 135 901 80.6 32.3 42.0 JK 18.3 41.2 Note: Bold type indicates sample concentration is above the detection limit. Key: B = Detected inorganic concentration is below the method reporting limit/Contract Required Detection Limit (CRDL) but is above the instrument detection limit. BK = Background. CLP = Contract Laboratory Program. EPA = United States Environmental Protection Agency. ID = Identification. J = The analyte was positively identified. The associated numerical value is an estimate. K = Unknown bias. mg/kg = Milligrams per kilogram. R = The sample results are rejected (analyte may or may not be present) due to gross deficiencies in quality control criteria. Any reported value is unusable. Resampling and/or reanalysis is necessary for verification. SD = Sediment. TAL = Target Analyte List. U = The analyte was not detected. The associated numerical value is the contract required detection limit. WESTON =RoyF. Weston, Inc. 5-12 ------- 6. MINES AND MILLS, LOCATIONS /DESCRIPTIONS, START-2 VISITS This section identifies the mines and mills visited by EPA and the ST ART -2 personnel as part of this field event. The mines and mills are presented in order of location relative to the upper Columbia River and its tributaries, beginning near Inchelium, Washington, continuing upstream along the river to the U.S.-Canada border. Mine and mill location, historical information, description, and ownership information are presented for each mine and mill. This section also presents field observations for the START-2 contractor and/or EPA personnel during the visits (Figures 6-1 through 6-42). For the 18 mines and mills where sampling was conducted, analytical results are presented in this section. 6.1 DAISY MINE 6.1.1 Mine Location Latitude: Longitude: Legal Description: CERCLISID: County: Contact: 48° 22' 45.80"N 118° 4'42.60"W SW% Section 7, Township 33N, Range 38E WAN001002371 Stevens Martha J. Kernohan, CPL Boise Cascade Corp. Mineral Resources 1111 West Jefferson St. Boise, Idaho 83728-0001 (208)384-7529 6.1.2 Historical Information The Daisy Mine is a former copper, lead, gold, and silver mine (Derkey et al. 1990). The mine is located 25 miles west of Addy near the summit on Huckleberry Mountain, Washington (Battien 1998). The mine also is reported to have produced between 1916 and 1935 (Derkey et al. 1990). It is reported that the presence of arsenic prompted the closure of the mine (Battien 1998). The mine claim was located in 1887, but with almost impassable roads and lack of transportation the claim was not developed 10:START-2\01020028\S759 6-1 ------- until 1905 when J.J. Browne and W.E. Seelye of Spokane took over the property (Battien 1998). Historical ownership from this time to the present is unknown. 6.1.3 Mine Description/Features The Daisy mine is located on the west slope of the Huckleberry Range in the Kettle Falls mining district. Alternate names are Daisy-Tempest and Silver Mountain. The mine consisted of 16 claims and additional property encompassing approximately 580 acres. The mine deposit consists of at least four quartz veins from a few inches to 12 feet in width cut by a series of argillites and quartzites intruded by diorite. The mine is developed by four adits and a shaft. (Huntting 1956) 6.1.4 START-2 Mine Visit On September 10, 2001, the START-2 visited the Daisy Mine and conducted a visual inspection of the property and surrounding area (Figure 6-1; Appendix A, Photos 43-1 through 43-21; Appendix B, Team 2 Phase 2, Pages 2 through 7). The mine area contained a tailings pile measuring 150 feet at the base, 30 feet in height with a slope of approximately 35%, and a depth of approximately 45 feet. A storage shed was located north of the tailings pile measuring 10 feet by 10 feet. East of the tailings pile and dirt road were an old office building, an outhouse, and a shed. North of the tailings pile and storage shed were the remnants of a building or shed. West of the remnants a shaft was located measuring 10 feet by 10 feet by unknown depth. A wet area originating from the shaft extended south approximately 25 feet. A depression south of the wet area was noted where potential pooling of water from the shaft would occur; continuing on to flow into a ditch (PPE 1), through a culvert, and into Magee Creek located southwest of the site. The overland distance from the shaft to the creek is approximately 70 feet. Access to the mine is unrestricted. Logging occurs in the vicinity of the mine. No livestock grazing was noted in the vicinity of the mine. 6.1.5 Sampling Locations Sample locations are depicted in Figure 6-2. Three tailings samples (DTTP01SS, DTTP02SS, and DTTP03SS) were collected from the tailings pile adjacent to Daisy Mine Road. The samples were collected within the overland surface water drainage routes identified by the START -2. The samples were collected to determine potential contamination associated with this source. The samples appeared to consist of silty sand. No odor or staining was noted during sample collection. 10:START-2\01020028\S759 6-2 ------- One surface water sample (DTAD01SW) was collected from the shaft. The sample was collected within the overland surface water drainage route identified by the START-2. The sample was collected to determine potential contamination associated with this source. The sample was clear. No odor or staining was noted during sample collection. A sediment sample (DTPP01SD) was collected at PPE 1 in the ditch near the culvert on the southern portion of the mine area. 6.1.6 Analytical Results 6.1.6.1 Surface Soil Sample Results The START -2 collected three surface soil samples from tailings for TAL metals analyses. Arsenic was detected at a significant concentration of 233 milligrams per kilogram (mg/kg). Significant concentrations ranged from 0.42 mg/kg to 2.9 mg/kg for mercury. Refer to Table 6-1 for complete data results. 6.1.6.2 Surface Water Sample Results The START-2 collected one surface water sample from the shaft water for TAL metals analysis. Analytes detected in DTAD01SW include arsenic (95.3 micrograms per liter |/ig/L|). cadmium (7.1 /ig/L), lead (5.2 /ig/L), and zinc (829 /ig/L). Copper and mercury were not detected. 6.1.6.3 Sediment Sample Results The START-2 collected one sediment sample from PPE 1 for TAL metals, pesticide/PCBs, and TOC analyses. No elevated concentrations were detected. Refer to Table 6-2 for complete data results. 6.2 L-B AR/N O RIHW ES T MAGNESITE 6.2.1 Plant Location Latitude: Longitude: Legal Description: 48° 15' 21.94"N County: CERCLISID: 117° 43' 6.25"W Section 23, Township 32N, Range 40E WAD097824577 Stevens 10:START-2\01020028\S759 6-3 ------- Contact: Ozzie Wilkinson Northwest Alloys, Inc. P.O. Box 115 1560 A Marble Valley Road Addy, Washington 99101-0115 (509) 935-3369 Northwest Magnesite Contact: William and Richard Brauner (magnesite residue pile only) 6.2.2 Historical Information L-Bar/Northwest Magnesite is located approximately two miles south of Chewelah, Washington on the west side of U.S. Highway 395, and lies on the south bank of the Colville River (CH2MHill 2001a, Ecology 2001). Northwest Magnesite is a former magnesite plant created in 1916 by American Mineral Production Company (Battien 1998). Shipments of crude magnesite from Stevens County averaged 700 tons daily (Battien 1998). The plant was closed down in 1968 (Battien 1998). L-Bar/Northwest Magnesite includes an industrial area covering approximately 80 acres and an adjoining 17-acre agricultural field located between the industrial area and the Colville River in the Colville River valley (Ecology 2001). An above-grade magnesite residue pile, approximately 30 feet deep and 17 acres in area, is found to the west (Ecology 2001). Two ditches, the Main Ditch and the West Ditch, run through the site. Both ditches previously discharged into the Colville River. L-Bar/Northwest Magnesite and the adjacent parcel to the south have been associated with magnesium processing since the 1930s. Large quantities of magnesite ore were processed and flue dust and other materials were stockpiled on site until 1967. In the mid-1970s, the facility was converted to recover magnesium from a magnesium processing byproduct commonly referred to as flux bar. Flux bar was supplied primarily by Northwest Alloys, Inc., from their magnesium plant near Addy, Washington, and sold to the site owners. The magnesium recovery facility was owned and operated by Phoenix Resources Recovery, Inc., from 1977 to 1986. L-Bar Products, Inc., operated the facility from 1986 to 1991 when it closed down due to insolvency (CH2MHill 2001a). More than 100,000 tons of materials (under a covered pile, in buildings, and on top of the magnesite pile) remained at the site after closure (Ecology 2001). Ownership of a majority of the L-Bar property was transferred from the L-Bar Bankruptcy Trustee to Northwest Alloys, Inc., in May 2000. The transfer included all former L-Bar Products, Inc., real estate except those portions lying under the south half of the magnesite residue pile, which were retained by the L-Bar trustee, and later transferred to Richard and Maxine Brauner. The north half of the magnesite pile and the underlying property is owned by William Brauner. Easements are in place in the 10:START-2\01020028\S759 6 -4 ------- existing deeds that grant Northwest Alloys, Inc., and its agents access to the magnesite pile for purposes of groundwater monitoring and future remedial actions, if needed. (CH2MHill 2001a) Since 1995, discharge from the Main Ditch has stopped as a result of actions taken by Northwest Alloys, Inc. In response to an Emergency Enforcement Order issued by Ecology in 1994, Northwest Alloys, Inc., constructed a water retention structure that eliminated direct discharge of Main Ditch surface water to the Colville River. (Ecology 2001) In 1995, Ecology and Northwest Alloys, Inc., entered into an Agreed Order to conduct interim actions, a remedial investigation (RI), and a feasibility study. Interim actions conducted included: management of stored waters in the evaporation pond (through land application in the North Field during the summer months) and the removal and disposal of approximately 65,000 tons of flux bar and flux bar residue from atop and around the magnesite residue pile. (Ecology 2001) Findings in the RI completed in 1998 show that flux bar and flux bar residue materials are the primary source of ammonia, chloride, and total dissolved solids detected in the shallow groundwater, soils, and in surface water in two on-site ditches. The shallow groundwater is not a drinking water aquifer; however, it discharges to the Colville River which has been categorized by Ecology as a Class A (excellent) surface water body. The West Ditch also discharges to the Colville River. River sampling showed a slight increase in ammonia and chloride concentrations when comparing upstream to downstream results. However, Class A surface water criteria have not been exceeded in the river. (Ecology 2001) Ecology prepared a draft Cleanup Action Plan that became final in June 2000. The cleanup actions selected by Ecology are source removal, monitoring, and institutional controls. With source removal, contaminants in groundwater, surface water, and soils are expected to be reduced over time through natural attenuation. (Ecology 2001) 6.2.3 Plant Description/Features The magnesite pile is believed to consist predominantly of magnesium carbonate derived from Finch, Red Marble, and Keystone quarries several miles west of the site. Processed (washed and crushed) magnesite ore was delivered to the Northwest Magnesite reduction facility via a 5-mile-long aerial tramway. Electrostatic precipitate (ESP) dust from the site and perhaps other materials were hydraulically placed into portions of the existing magnesite stockpile. A Washington State Department of T ransportation aerial photo of the site in July 1966 shows the placement of the ESP dust by flume discharge from the plant into a dike retaining pond system in the pile area. (CH2MHill 1998) 10:START-2\01020028\S759 6-5 ------- In addition to magnesite processing, a fireproof fiber-board product called Thermax was manufactured at the site before L-Bar operations commenced. The Thermax fiber boards consisted of shredded Cottonwood impregnated with magnesite. Little is known about the operation; however, many of the older L-Bar buildings are constructed of Thermax. Thermax debris is found as a waste material mixed into the magnesite stockpile. (CH2MHill 1998) Past operating practices and inadequate storage of flux bar and flux bar residue have resulted in elevated levels of mostly chloride and ammonia in shallow groundwater and surface water. Most of the materials remaining on the plant have continued to leach salts and ammonia into shallow groundwater and surface water in two ditches. (Ecology 2001) To date, 140,000 to 150,000 tons of flux bar related material has been removed from the property. There is an estimated 30,000 to 40,000 tons of material still is present on site. Removal of this material and backfilling are tasked to be complete by 2002. These activities are being conducted under an Agreed Order with Ecology (Wilkinson 2002). Results from the Draft Interim Action Materials Characterization Report (1996) produced by Cascade Earth Sciences (CES) for Northwest Alloys Inc. showed the magnesite residue pile contained elevated levels of some trace metal and semi-metallic constituents including arsenic, boron, cadmium, copper, selenium, and zinc. Concentrations of these constituents in the magnesite residue pile were elevated in comparison to both regional background soil levels for eastern Washington and to levels measured in L-Bar flux bar residue. (CH2MHill 1998) Sediment samples were collected during Phase I of the RI from six locations: three in the Main Ditch, two in the West Ditch, and one from the Logan Road ditch south of the property. Review of trace metals analytical results demonstrated that barium, manganese, and selenium concentrations in the Main Ditch sediment samples exceeded the concentrations detected in the background sample collected from the Logan Road ditch south of the property. Trace metals results from the West Ditch samples were similar to Main Ditch samples in that background concentrations were exceeded for barium, manganese, and selenium. Background concentrations of arsenic and copper also were exceeded. Concentrations of these metals were less than 2 times background levels except for selenium, which was approximately seven times background. (CH2MHill 1998) 6.2.4 START-2 Visit On September 10 and 11, 2001, the ST ART-2 visited L-Bar/Northwest Magnesite and conducted a visual inspection of the property and surrounding area (Figure 6-3; Appendix A, Photos 40-1 through 10:START-2\01020028\S759 6-6 ------- 40-22 and 41-8 through 41-11; Appendix B, Team 1 Phase 2, Pages 3 through 7, 9 and 10). The property consisted of six buildings including primary crushing and storage, maintenance and repair shop, magnesium recovery and storage (the cooling beds area was demolished in 1994), secondary crushing and butler storage, office and laboratory, and storage bunkers. Six exterior product storage silos are south of the storage bunkers. The buildings contain process equipment and flux bar residue products in various stages of development and storage. The complete list of materials and the building plans showing material locations can be found in the Draft Interim Action Materials Characterization Report produced by CESin 1996. (CH2MHill 1998) Other significant features include three lined ponds (the evaporation, holding, and sanitary lagoon) and the covered flux bar residue pile north of the buildings. The area around the buildings is paved with asphalt to control dust and divert surface water runoff to collection ditches for discharge to the holding pond. If the holding pond becomes full, it is equipped with an overflow that allows discharge to the Main Ditch. Storm water contained in the holding pond is being discharged to the Colville River under an Ecology-approved storm water management permit (PPE 2). Underground and overhead utility lines are distributed throughout the site. No registered underground storage tanks are present on the property. (CH2MHill 1998) No logging occurs in the vicinity of the plant. Farmland is located adjacent to the property. 6.2.5 Sampling Locations Sample locations are depicted in Figure 6-4. Two sediment samples were collected in the West Ditch. Sediment sample LBDT03SD was collected from PPE 1 and sediment sample LBDT02SD was collected from PPE 2. 6.2.6 Analytical Results 6.2.6.1 Sediment Sample Results The START-2 collected one sediment sample from PPE 1 (LBDT03SD) and one sediment sample from PPE 2 (LBDT02SD) for TAL metals, pesticide/PCBs, and TOC analyses. No analytes were detected at elevated concentrations in these samples. Refer to Table 6-3 for data results. 10:START-2\01020028\S759 6-7 ------- 6.3 NORTHWEST ALLOYS 6.3.1 Plant Location Latitude: Longitude: Legal Description: 48° 21'26.00"N 117° 50' 54.00"W Section 14, Township 33N, Range 39E CERCLISID: WAD094626868 County: Contact: Ozzie Wilkinson Northwest Alloys, Inc. Stevens P.O. Box 115 1560 A Marble Valley Road Addy, Washington 99101-0115 (509) 935-3369 6.3.2 Historical Information Northwest Alloys is a former magnesium plant in Addy, Washington, covering approximately 240 acres (Northwest Alloys, Inc. 1992). The plant is located in Colville Valley which is drained by the Colville River. The Colville Valley is bordered by rugged, mountainous terrain. Access to the plant is restricted. In the early 1970s, Northwest Alloys, Inc., a wholly owned subsidiary of the Aluminum Company of America decided to develop a plant for the production of ferrosilicon, magnesium, and silicon in Addy, Washington (DNR 1983). Construction began in 1973 and production began in 1976 (DNR 1983). Plant operations were discontinued in September 2001 due to economic considerations affecting domestic magnesium production. 6.3.3 Plant Description/Features The plant produced magnesium and ferrosilicon partially from raw material quarried on the property. Waste products generated were either recycled, sold as product or thread, or buried on site. None of the wastes were regarded as hazardous under the Resource Conservation and Recovery Act (RCRA) but were classified as regulated wastes under Ecology Dangerous Waste Regulations. (E & E 1988) The magnesium was sold to the aluminum industry as an alloying ingredient and to the steel industry as a desulphurization agent. Ferrosilicon was used internally as a reducing agent in magnesium production. Northwest Alloys, Inc., employed the Magnetherm (Aluminathermic) process which depended upon the reaction between calcined dolomite (a mixture of calcium dioxide and magnesium 10:START-2\01020028\S759 6-8 ------- oxide) and the silicon content of ferrosilicon. The reaction took place in a liquid slag formed from the reaction of the calcium and silicon byproducts. Alumina was needed in the process to reduce the melting point of the slag and to depress unwanted secondary reactions. Aluminum was used for the same purpose and was also a supplemental reductant. (E & E 1988) The major raw material, dolomitic limestone, was quarried from a deposit adjacent to the plant. A second raw material, pure aluminum shot, aluminum skim, or alumina, was brought in by rail. Ferrosilicon, the third material used, was produced on site from locally mined quartzite or was brought in. (E & E 1988) Quarried dolomite was crushed, washed, screened, and stockpiled. Because water and carbon dioxide in the dolomite will reduce magnesium production efficiency, it was necessary to calcine the dolomite to reduce the water and carbon dioxide to a minimum. The calcining operation was carried out in a rotary kiln in which the dolomite traveled counter-current to hot combustion gases in the kiln. (E & E 1988) The calcined dolomite, plus ferrosilicon and aluminum or alumina, was fed from bins to the batch-operated magnesium reduction furnaces. The furnaces were operated under vacuum and were totally enclosed. The magnesium, produced as a vapor, rose from the furnace into a condenser and was collected and solidified in crucibles. (E & E 1988) The used condenser-crucible assembly was taken to a cleaning area and disassembled. The condenser and connecting pipes were cleaned and prepared for reuse. The crucible was removed and transported to the metal service area where the magnesium was remelted, refined, cast into ingots, and shipped out by rail or truck. (E & E 1988) In 1979, Northwest Alloys, Inc., began to fill the excavated south quarry with waste products of which 10% were regulated wastes. The regulated wastes were sandwiched between layers of low-permeability slag in the landfill. The south landfill/quarry was estimated to be filled to capacity by 1990, at which time the west quarry would be utilized for waste disposal. Prior to 1980, Northwest Alloys, Inc., disposed of their regulated wastes on the ground at the south portion of the facility. (E & E 1988) The plant was designed as a zero-discharge facility. All cooling water was recirculated and perimeter dikes contained and treated all surface water runoff (E & E 1988). During the late 1970s, and into the 1980s, various non-hazardous production byproducts from the plant operations were placed into three shallow, soil-lined repositories in a portion of the site referred to as the Northwest (NW) Quadrant area. The three repositories include the Sealed Pit, Casting Residue 10:START-2\01020028\S759 6-9 ------- Mound (CRM), and North Waste Area. Some of the solid waste materials that were placed into the repositories were chloride and ammonia bearing, and/or displayed an elevated pH. Since 1995, Northwest Alloys, Inc., has conducted a series of characterization and monitoring activities within and around these repositories under the Model Toxics Cleanup Authority, Voluntary Cleanup Program, as administered by Ecology's Industrial Section. A focused hydrogeologic investigation in 1995 identified chloride and ammonia in shallow groundwater immediately adjacent to the waste repositories in the NW Quadrant area and adjacent to the wastewater storage ponds at the southern end of the plant. In 1999, Northwest Alloys, Inc., began the excavation and removal of approximately 25,000 tons of waste material as part of its ongoing voluntary cleanup actions. The wastes were shipped off-site to a non-hazardous subtitle D landfill in Roosevelt, Washington. In 2000, Northwest Alloys, Inc., installed a RCRA-compliant liner system as an engineering upgrade for a previously unlined stormwater storage pond. The contents of the two wastewater storage ponds have been transferred to the lined pond. The two wastewater ponds are now empty and available for storage of stormwater. Also in 2000, removal actions at the Sealed Pit were completed with soil removal conducted along Marble Valley Road. (Northwest Alloys, Inc. 2001) In 2001, excavation and removal of material from the CRM was conducted and characterization sampling of the North Waste Area was performed (Northwest Alloys, Inc. 2001). Removal of waste materials from the North Waste Area is ongoing. Other activities planned for 2002 include additional soil removal at the CRM and backfilling of the CRM and Sealed Pit areas. Closure of the RCRA Part B Landfill located on the property is also underway. (Wilkinson 2002) T errain is flat in the southern half of the site and hilly in the northern half. Mining and filling operations have changed the topography of the site over its operational history. Artificial fill covers much of the NW Quadrant. Native grade is observed along the western margins of the plant, along Marble Valley Road. Presently, ground elevations in the NW Quadrant of the plant site range from about 1650 to 1665 feet above mean sea level (msl). (CH2MHill 2001b) Groundwater contamination by inorganic compounds has been documented below an on-site quarry used for disposal of wastes. The contamination appears limited in extent and no present-day migration of contaminants to drinking water aquifers appears likely. (E & E 1988) Analytical results of routine monitoring conducted at the City of Addy municipal water supply wells is provided in Appendix I. Two surface water features, the Colville River and Stensgar Creek, are present within the immediate vicinity of the Northwest Alloys' Addy plant. The Colville River is located about 500 feet 10:START-2\01020028\S759 6-10 ------- east of the plant site and Stensgar Creek is located about 1,000 feet south of the plant. Surface water runoff from the NW Quadrant area generally is to the west and south. (CH2MHill 2001b) 6.3.4 START-2 Visit On September 10,2001, the ST ART-2 visited Northwest Alloys and conducted a visual inspection of the property and surrounding area (Figure 6-5; Appendix A, Photos 40-23 through 41-7; Appendix B, Team 1 Phase 2, Pages 7 through 9). The current facility layout and surrounding areas are shown in Figure 6-5. The plant is contained within gates and hillsides. There is no overland flow from the site directly into the Colville River due to topography and surface water runoff controls. A potential overland flow exists via a series of road side ditches on the southern portion of the plant. The overland flow potentially flows through these ditches to a ditch leading from the road on the south end of the property south towards Stensgar Creek (PPE 1). Stensgar Creek, located south of the plant, contains brown trout. Stensgar Creek Feeds into the Colville River. The terrain is flat in the southern portion of the property and hilly in the northern portion. 6.3.5 Sampling Locations Sample locations are depicted in Figure 6-6. NADT01SD was collected in the ditch approximately 25 feet north of the confluence of the ditch and Stensgar Creek (PPE 1). 6.3.6 Analytical Results 6.3.6.1 Sediment Sample Results The START-2 collected one sediment sample from PPE 1 (NAD01SD) for TAL metals analyses. Elevated concentrations of arsenic (4.9 mg/kg), copper (18.7 mg/kg), lead (7.5 mg/kg), and zinc (47.9 mg/kg) were detected in this sample. Refer to Table 6-4 for complete data results. 6.4 NAPO LEON MINE/MILL 6.4.1 Mine/Mill Location Latitude: Longitude: Legal Description: 48° 44' 12.10"N 118° 06' 4.32"W NW% Section 3, Township 37N, Range 37E CERCLISID: WAN001002391 Stevens County: 10:START-2\01020028\S759 6-11 ------- Contact: Martha J. Kernohan, CPL Boise Cascade Corp. Mineral Resources 1111 West Jefferson St. Boise, Idaho 83728-0001 (208)384-7529 6.4.2 Historical Information The Napoleon Mine/Mill is a former copper, gold, and iron mine/mill in the Northport mining district, Washington (Derkey et al. 1990). The mine is reported to have produced in 1907-1910, 1913-1917, and 1938-1955 (Derkey et al. 1990). A mill was built in 1910 to extract gold (Battien 1998). The mine/mill was owned in 1915 by British Columbia Copper Company (Battien 1998). Historical ownership information from the time the facility began operation to the present is unknown. 6.4.3 Mine/Mill Description/Features The Napoleon Mine/Mill consists of two claims. The exposed formation is part of the Mission argillite. The ore minerals are magnetite, limonite, pyrite, and pyrrhotite. Occasional small quantities of chalcopyrite are present. The ores were mined to a considerable extent and shipped to the smelter at Greenwood, British Columbia, where it was used as a flux. The property is developed by three main tunnels and a large glory hole. The highest workings in the glory hole are at an elevation of 2,650 feet. These workings are all connected with stopes and raises. A one-mile aerial tramway was built from the mine to the bunkers at the railroad along Kettle River. (Weaver 1920) 6.4.4 START-2 Mine/Mill Visit On September 12, 2001, the START-2 visited the Napoleon Mine/Mill and conducted a visual inspection of the property and surrounding area (Figure 6-7; Appendix A, Photos 41-12 through 41-17; Appendix B, Team 1 Phase 2, Pages 11 and 12). The mine/mill area consisted of an adit measuring 5 feet by 4 feet located south of the dirt road entrance. There was no evidence of tailings or waste rock present on the property. The adit discharge flowed across the dirt road, down the hillside approximately 120 feet, before entering an intermittent creek (PPE 1). Iron staining was present on the soil and the dirt road. There was no adit discharge at the time of the visit. Access to the mine/mill was restricted by a locked gate. No logging or livestock grazing was noted in the vicinity of the property. 10:START-2\01020028\S759 6-12 ------- 6.4.5 Sampling Locations Sample locations are depicted in Figure 6-8. One surface water sample (NPAD01SW) was collected from the adit. The sample was collected within the overland surface water drainage route identified by the START-2. The sample was collected to determine potential contamination associated with this source. The sample was clear. No odor was noted during sample collection. Iron staining was present on the soil and the dirt road identifying the drainage pathway to the intermittent creek. PPE 1 (NPPP01SD) was collected at the confluence of the adit discharge and the intermittent creek. 6.4.6 Analytical Results 6.4.6.1 Surface Water Sample Results Analytes detected in NPAD01SW include lead (11.3 /ig/L) and zinc (937 /ig/L). 6.4.6.2 Sediment Sample Results The START-2 collected one sediment sample from PPE 1 (NPPP01SD) for TAL metals, pesticide/PCBs, and T OC analyses. Copper was detected in this sample at an elevated concentration of 207 mg/kg. Refer to Table 6-5 for complete data results. 6.5 FIRS TIHO UGHT MINE 6.5.1 Mine Location Latitude: Longitude: Legal Description: CERCLISID: Contact: 48° 53'2.04"N 118° 09' 32"W Section 18, Township 39N, Range 37E WAN0010023 74 Bill Campbell Western Continental, Inc. P.O. Box 14006 Spokane, Washington 99214 6.5.2 Historical Information and Mine Description/Features The First Thought Mine is a former gold and silver mine located in the Orient district, Washington. The mine was located in 1896 and was an almost continuous shipper from 1904 to 1910. It is estimated that the mine produced slightly over 40,000 tons of ore. The chief values of the ore were in 10:START-2\01020028\S759 6-13 ------- gold. The property is developed by three tunnels driven into the mineralized zone, a shaft, and drifts. The mineralized portion contains finely disseminated crystals of pyrite which carry the gold values. (Weaver 1920) 6.5.3 START-2 Mine Visit On September 12, 2001, the START-2 visited the First Thought Mine and conducted a visual inspection of the property and surrounding area (Appendix B, Team 1 Phase 2, Pages 12 through 14 ). The area consisted of waste rock piles, a dilapidated house, and a possible shaft with an opening measuring approximately 5 feet in diameter (Appendix A, Photos 41-18, 41-20, 41-21). The shaft and dilapidated house were located on the east side of the property. Waste rock piles were located approximately 200 feet west of the shaft. A road and cow pasture were located on the south side of the property. A creek flows through the pasture. The ST ART -2 observed boxes containing samples of soil borings. Some of the boxes were marked either Shell, F.T., PF, BC, or Boise Cascade (Appendix A, Photo 41-19). The START-2 did not observe any overland drainage routes from the waste rock piles to surface water. Access to the mine was unrestricted. No residents or potential receptors were observed on the property. No samples were collected at the First Thought Mine. 6.6 LOTTIE MINE 6.6.1 Mine Location Latitude: Longitude: Legal Description: CERCLISID: County: Contact: 48° 51' 53.28"N 118° 01' 15.24"W Section 19, Township 39N, Range 38E WAN0010023 84 Stevens United States Department of the Interior Bureau of Land Management Spokane District Office 1103 N. Fancher Spokane, Washington 99212-1275 (509) 536-1200 6.6.2 Historical Information and Mine Description/Features The Lottie Mine is a former copper, gold, and silver mine located in the Fifteen Mile Creek district, Washington. The mine was located in 1898 and was developed by a 50-foot shaft, open cut 10:START-2\01020028\S759 6-14 ------- work, and trenching for a distance of over 500 feet along the course of the vein. The ore minerals are chalcopyrite, pyrite, and pyrrhotite which are said to assay in copper, gold, and silver. About 50 tons of ore are said to have been mined. (Weaver 1920) 6.6.3 START-2 Mine Visit On June 18, 2001, the START -2 visited the Lottie Mine and conducted a visual inspection of the property and surrounding area (Appendix B, Team 2 Phase 1, Pages 2 and 13). The START-2 observed two log structures and a waste rock pile near these structures (Appendix A, Photos 21-6, 21-7 and 21-8). The waste rock pile was mixed with soil and measured approximately 30 feet by 15 feet by 3 feet deep (Appendix A, Photo 21-5). An upper road was located approximately 500 feet northwest from the log structures. The upper area consisted of two waste rock piles. One waste rock pile measured an estimated 60 feet by 30 feet by 10 feet deep (Appendix A, Photo 29-18). The other waste rock pile measured approximately 15 feet by 15 feet by 4 feet deep. The START-2 did not observe any overland drainage routes from the waste rock piles to surface water. Access to the mine was unrestricted. No residents or potential receptors were observed on the property. No samples were collected at the Lottie Mine. 6.7 HOMESTAKENO. 1 MINE 6.7.1 Mine Location Latitude: Longitude: Legal Description: CERCLISID: County: Contact: 48° 52' 06.96"N 118° 01' 18.84"W Section 19, Township 39N, Range 38E WAN001002378 Stevens United States Department of the Interior Bureau of Land Management Spokane District Office 1103 N. Fancher Spokane, Washington 99212-1275 (509) 536-1200 6.7.2 Historical Information and Mine Description/Features The Homestake No. 1 Mine is a former copper, gold, silver and mine situated in the Northport district, Washington. The mine is part of the Electric Point property. (Huntting 1956) 10:START-2\01020028\S759 6-15 ------- 6.7.3 START-2 Mine Visit On June 24, 2001, the START-2 visited the Homestake No. 1 Mine and conducted a visual inspection of the property and surrounding area (Appendix B, Team 2 Phase 1, Page 13). The area consisted of shafts and two waste rock piles (Appendix A, Photos 29-5 through 29-15). One waste rock pile measured an estimated 300 to 400 cubic yards. The START-2 did not observe any overland drainage routes from the waste rock piles or shafts to surface water. Access to the mine was unrestricted. No residents or potential receptors were observed on the property. No samples were collected at the Homestake No. 1 Mine. 6.8 ANTELOPE MINE 6.8.1 Mine Location Latitude: Longitude: Legal Description: CERCLISID: County: Contact: 48° 52' 04.80"N 118° 01' 05.88"W Sections 19-20, Township 39N, Range 38E WAN001002368 Stevens William Inglis 551 Austin Street, Suite 1103 Coquitlam, British Columbia V3K6R7 Canada 6.8.2 Historical Information and Mine Description/Features The Antelope Mine is a former copper and gold mine located in the Orient district, Washington. The mine claim, located in 1898, is reported to have produced 50 tons of ore (Huntting 1956). Bedrock outcrops are largely covered with deposits of glacial drift, but where exposed are a part of the Jumbo volcanic formation. A vein, averaging in width from two and one-half to four feet, consists of chalcopyrite, pyrite, and pyrrhotite. Small quantities of melanterite are present in vein pockets. (Weaver 1920) 6.8.3 START-2 Mine Visit On June 24, 2001, the START -2 visited the Antelope Mine and conducted a visual inspection of the property and surrounding area (Appendix B, Tearn 2 Phase 1, Page 13). The mine was accessed by a Forest Service road and is situated approximately 50 feet from the end of the road. The area consisted of 10:START-2\01020028\S759 6-16 ------- a shaft and a waste rock pile (Appendix A, Photos 29-3 and 29-4). The shaft opening measured 15 feet by 10 feet and the waste rock pile measured approximately 40 feet long by 40 feet wide by 2 feet deep. The START -2 did not observe any overland drainage routes from the shaft or waste rock pile to surface water. No residents or potential receptors were observed on the property. No samples were collected at the Antelope Mine. 6.9 HUBBARD MINE 6.9.1 Mine Location Latitude: Longitude: Legal Description: CERCLISID: County: Contact: 48° 55' 15.96"N 117° 52' 03.72"W ElA Section 32, Township 40N, Range 39E WAN001002380 Stevens Colville National Forest 765 South Main Colville, Washington 99114 6.9.2 Historical Information and Mine Description/Features The Hubbard Mine is a former copper, gold, lead, silver, and zinc mine situated at the head of Squaw Creek, Washington. The mine was reported to be owned by Bruder Mining Company, Hubbard Mining Corporation (1945), and Mines Management, Inc. (1949). Historical ownership information from the time the facility began operations to the present is unknown. The ore deposit consists of sulfides concentrated in small bunches in a quartz vein from 10 to 12 feet wide in phyllite. (Huntting 1956) 6.9.3 START-2 Mine Visit On June 24, 2001, the START -2 visited the Hubbard Mine and conducted a visual inspection of the property and surrounding area (Appendix B, Team 2 Phase 1, Page 14). A waste rock pile, three shafts, a log structure, and former housing were observed on the property (Appendix A, Photos 29-23, 29-24, and 30-1 through 30-5). The waste rock pile measured approximately 40 feet by 40 feet by 20 feet deep. The START-2 did not observe any overland drainage routes from the waste rock pile to surface water. Access to the mine was unrestricted. No residents or potential receptors were observed on the property. No samples were collected at the Hubbard Mine. 10:START-2\01020028\S759 6-17 ------- 6.10 NEW LEADVILLE MINE 6.10.1 Mine Location Latitude: Longitude: Legal Description: 48° 44' 08.52"N 117° 52' 33.60"W CERCLISID: SE% Section 3, Township 37N, Range 39E WAN001002392 County: Contact: United States Department of the Interior Bureau of Land Management Spokane District Office 1103 N. Fancher Spokane, Washington 99212-1275 (509) 536-1200 Stevens 6.10.2 Historical Information and Mine Description/Features The New Leadville Mine is a former lead mine located in the Bossburg mining district, Washington. An alternate name is the Yo Tambien Mine. The mine produced prior to 1924 (Huntting 1956). The ore body is irregular in shape and has been stopedto a considerable extent near the surface (Jenkins 1924). Historical ownership information from the time of patent to the present is unknown. 6.10.3 START-2 Mine Visit On June 20, 2001, the START -2 visited the New Leadville Mine and conducted a visual inspection of the property and surrounding area (Appendix B, Team 3 Phase 1, Pages 11 and 12). The mine area consisted of two adits, a waste rock pile, building debris, a collapsing building, and remnants of rail lines (Appendix A, Photos 10-17 through 10-22). Adit 1 appeared to flowinto adit 2. Adit 1 was located approximately 39 feet southwest from the collapsing building. Adit 2 was located approximately 23 feet south and 20 feet west from adit 1. The drainage route from adit 2 was dry. A pH reading of 6 was measured at the discharge from adit 1. The waste rock pile, located approximately 53 feet from adit 1, measured an estimated 25 feet long by 40 feet wide by 5 feet deep. Remnants of rail lines were observed above adits 1 and 2. The START-2 did not observe any overland drainage routes from the adits or waste rock pile to surface water. Access to the mine was unrestricted. No residents or potential receptors were observed on the property. No samples were collected at the New Leadville Mine. 10:START-2\01020028\S759 6-18 ------- 6.11 R.J. MINE 6.11.1 Mine Location Latitude: Longitude: Legal Description: 48° 43' 54.84"N County: CERCLISID: 117° 52' 31.80"W Section 3, Township 37N, Range 39E WAN001002395 Stevens 6.11.2 Historical Information and Mine Description/Features The RJ. Mine is a former lead and silver mine located in the Northport mining district, Washington (Weaver 1920). The mine was located in 1900 (Battien 1998). Mine formation is a bluish-white limestone forming a high bluff on the east side of Clugston Creek. Veins in the form of replacement deposits occur in fracture zones and contain galena with silver. The property has been developed by several open cuts, shallow shafts, and short tunnels (Weaver 1920). Historical ownership information from the time of patent to the present is unknown. 6.11.3 START-2 Mine Visit On June 20, 2001, the START -2 visited the R.J. Mine and conducted a visual inspection of the property and surrounding area (Appendix B, Tearn 3 Phase 1, Page 13). The START-2 observed a waste rock pile and a flowing adit (Appendix A, Photos 11-1 and 11-4). Adit flow was estimated to be 2 to 5 cubic feet per second (cfs) and was drained by a 10-inch diameter polyvinyl chloride pipe extending approximately 50 feet and ending abruptly (Appendix A, Photo 11-1 and 11-3). Discharge continued to flow an estimated 150 feet before infiltrating the ground. Inside the adit a spray painted sign read "ORMC 154465 Eureka Surprise" (Appendix A, Photo 11-2). The distance of the adit from the waste rock pile is approximately 88 feet. The waste rock pile measured approximately 46 feet tall by 90 feet wide by 20 feet deep. The area at the base of the waste rock pile was dry and vegetation was growing on the pile. The START-2 did not observe any overland drainage routes from the adit or waste rock pile to surface water. Access to the mine was unrestricted. No residents or potential receptors were observed on the property. No samples were collected at the RJ. Mine. 10:START-2\01020028\S759 6-19 ------- 6.12 VAN STONE MINE/MILL 6.12.1 Mine/Mill Location Latitude: Longitude: Legal Description: 48° 45' 38.16"N 117° 45' 23.76"W ElA Section 33, Township 38N, Range 40E CERCLISID: WAD980834808 Stevens County: Contact: Equinox Resources (Washington) Inc. c/o Mano River Resources Inc. Suite 600 890 West Pender Street Vancouver, British Columbia V6C 1K4 Canada (604)689-1700 fax (604) 687-1327 6.12.2 Historical Information The Van Stone Mine/Mill is a former cadmium, lead, and zinc mine/mill located on the upper portion of Onion Creek near Northport, Washington (Derkey et al. 1990). The mine is reported to have produced in 1930, 1937, 1942, and 1952-1956 (Derkey et al. 1990). Production to the end of 1956 was 2,242,960 tons of ore milled, yielding 10,700 tons of lead concentrates and 120,000 tons of zinc concentrates (Mills 1977). George Van Stone claimed and worked the mine/mill until 1926 (Battien 1998). Hecla Mining Company acquired the property in 1926, and Van Stone Mining Company took over in 1930 (Battien 1998). Willow Creek Mines of Nevada operated the mine/mill from 1938 to 1942 (Mills 1977). In 1950, American Smelting and Refining of Salt Lake City bought the claims and the surrounding land (Battien 1998). The property was operated intermittently by Asarco, Inc., during the 1950s and 1960s (Beacon 1999). In 1972, Callahan Mining Corporation acquired the mill and mine property (Mills 1977). Equinox Resources, Inc., acquired the property in 1990 and placed it back into production in 1991 (Beacon 1999). The operations were suspended in late 1992 due to low metal prices and have been under care and maintenance since January 1993 (Beacon 1999). Equinox Resources, Inc., filed a preliminary Reclamation and Closure Plan with the Washington State Department of Natural Resources (DNR) prior to the reopening of the mine/mill in 1991. Under current legislation, Equinox Resources Inc., is required to file a revised Reclamation and Closure Plan (Beacon 1999). The Reclamation and Closure Plan present two possible outcomes; closure of existing operations without additional mining, 10:START-2\01020028\S759 6-20 ------- and closure following the mining and processing of additional known ore reserves (Beacon 1999). The objective of the Reclamation and Closure Plan is to provide a systematic approach to decommissioning the Van Stone Mine/Mill and returning all disturbed lands associated with the mine/mill operations (post-1971) to a mixed land use capability. The mixed land use classification is defined as consisting of a combination of forest lands, open space lands, shrub and grasslands, wetlands, wildlife habitat, talus slopes, and agricultural lands (Beacon 1999). 6.12.3 Mine/Mill Description/Features The Van Stone Mine/Mill is on the east side of the Columbia River and southwest of Northport, Washington. Geologic setting includes deposition of heavy minerals in river gravels. Production was from two open pits a few hundred feet south of the south margin of the Spirit pluton. The ore deposit is within the middle dolomite unit of the Metaline Limestone, approximately 200 feet from the overlying upper limestone unit at its closest point. (Mills 1977) Rock was removed from the mine, crushed on site, and the usable material trucked off site for further processing. Fine-grained tailings were carried in a slurry via an elevated wooden flume first to the old tailings pile, and later to a large tailings pile located in Sections 29 and 30. The slurry was dumped into the pile to allow the sediment to settle out of the slurry. The new tailings pile walls were built up from dried tailings and at present stand 10 to 50 feet above the ground surface. The wooden slurry line was replaced in the 1990s with a durable, flexible pipe. (Boise Cascade Corporation 1997) The Van Stone Mine/Mill operations were located in the Onion Creek watershed approximately 21 miles northeast of Colville, Washington. Onion Creek has been categorized by Ecology as a Class AA (extraordinary) surface water body. A comprehensive analyses of the entire Onion Creek watershed titled Onion Creek Watershed Analysis was carried out in March 1997 for Boise Cascade Corporation by a number of organizations, including DNR, Ecology, Stevens County Conservation District, Vaagen Brothers Lumber, Arden Tree Farm, Inland Empire Paper, Maurice Williamson, and the Washington Farm Forestry. The purpose of the assessment was twofold: to provide an understanding of the current and possible future states of channel conditions, and to locate accessible fish habitat in the watershed to identify existing conditions and habitats of special concern. The assessment identified localized evidence of land use impacts to fish-bearing channels including a disturbance described as "major" in the tributary adjacent to the Van Stone Mine due to an apparent tailings pipe-burst or associated slope failure which occurred prior to 1968. (Raines, et. al. 1997) 10:START-2\01020028\S759 6-21 ------- 6.12.4 START-2 Mine/Mill Visit On June 22 and 23, 2001 the START-2 visited Van Stone Mine/Mill and conducted a visual inspection of the property and surrounding area (Figures 6-9 through 6-11; Appendix A, Photos 1-1 through 9-25; Appendix B, Team 1 Phase 1, Pages 24 and 25; Team 2 Phase 1, Pages 10 through 12; Team 3 Phase 1, Pages 20 through 22). The mine/mill area consisted of a waste rock storage area, two tailings piles, an open pit, a seepage pond, buildings, and stained soil areas. The waste rock storage area was constructed by end dumping to the south contour from the open pit haul road. The eastern toe of the waste rock storage area consists mostly of larges and is located less than 100 feet of the Northeast Fork of Onion Creek. Slopes on the north side of the haul road consist, in part, of colluvial overburden. Depth and quantity of overburden has yet to be determined. (Beacon 1999) The tailings embankments consist of steep sided erodable tailings sands. In some locations the slopes are heavily rilled, particulary along the south and west faces. (Beacon 1999) A rock-lined spillway and discharge channel has been installed in the extreme northeast corner of the main tailings impoundment to direct any excess accumulated rainwater to the adjacent drainage. Tailings area water quality is monitored every 90 days and is reported to be suitable for discharge under the facility's Washington State Water Discharge Permit or can be used for irrigation purposes. A seepage pond is located adjacent to the tailings facility. The open pit, located in the most southern portion of the area, is oblong in shape with an average width of 120 feet, an average length of 317 feet, and a maximum depth of 460 feet. The pit is flooded to an elevation of 3,510 feet or 170 feet above the current pit bottom. The rim of the open pit and portions of the top bench currently support vegetation. The water in the open pit is separated from a tributary to the Northeast Fork of Onion Creek by a narrow rock-filled berm. The water level in the open pit is static at 3,510 feet elevation and excess water seeps through the berm to the adjacent creek (PPE 3). (Beacon 1999) The buildings on site include the process plant, crushing plant, mill building, mill shop, warehouse, change house, assay office, garage, scale house, core storage, switch building, pit shop, conveyor system, reagent and fuel storage areas, bunk house, and four residences. Other miscellaneous items include a 20 million gallon water tank, return water tank, power feeders, pump power line, T-6 tractor, car spotter, tailings pipe line, tailings flume, tailings dam, 60 million gallon water tank, 200 million gallon water tank, fire mains and hydrants, domestic water main, two pipe lines, three dams 10:START-2\01020028\S759 6-22 ------- and pipe lines, pit power lines and switchgear, pit water line, pit air line, mine shop equipment, and road equipment. (Beacon 1999) Six areas of stained soil were noted on the property. The first area was near a liquid propane tank south of the mill building. The second area was near elevated transformers adjacent to the mill building. At this location the soil was stained orange and green. The third area was near an aboveground storage tank (AST) with secondary containment near the entrance to the mine/mill. The containment area was filled with water and smelled of diesel. No sheen was noted. The secondary containment had been breached. The fourth area was on a concrete pad with staged transformers and stained soil south of the liquid propane tank. The fifth area was near staged 55-gallon drums surrounded by stained soil west of the mine/mill buildings and south of the Roundup Powder Company abandoned building. The sixth area was near another AST area surrounded by stained soil located east of the shed and staged 55-gallon drums. Several unnamed creeks were located adjacent to the property. One unnamed creek was located south of the mine pit water and could not be accessed due to safety concerns. A second unnamed creek was located at the southwest portion of the old tailings pile. Surface water runoff from this pile drains to this creek (PPE 4). A third unnamed creek was located on Boise Cascade Corp. property; no sample was collected due to lack of access. A fourth unnamed creek was located adjacent to the tailings pile near the entrance to the mine/mill. Surface water runoff from the tailings pile also drains to this creek at two locations (PPE 1 and PPE 2). Excess water from the on-site open pit seeps through the pit berm to an adjacent creek (PPE 3). A number of public, private, and commercial interests access the mine/mill access road. Boise Cascade Forest District maintains an easement over the road to access their timber holdings. Washington Water Power maintains an easement over the road to access a substation located on the mine/mill property. There are residences near the road junction and the DNRuses the road for fire control. (Beacon 1999) Access to the mine/mill is restricted by two locked gates. No logging or grazing was noted in the vicinity of the property. 6.12.5 Sampling Locations Sample locations are depicted in Figures 6-12 through 6-14. Twelve waste rock samples (VSWP01SS through VSWP12SS) were collected from the waste rock pile. The samples were collected within the overland surface water drainage routes identified by the START-2. The samples were 10:START-2\01020028\S759 6-23 ------- collected to determine potential contamination associated with this source. The samples appeared to consist of tan/gray, fine sand with gravel and rocks. No odor or staining was noted during sample collection. Twenty-one tailings samples (VSTP01SS through VST P21SS) were collected from two tailings piles. The samples were collected within the overland surface water drainage routes identified by the START-2. The samples were collected to determine potential contamination associated with this source. The samples appeared to consist of dark gray/brown, fine, dry sand and tailings. No odor or staining was noted during sample collection. Samples VSTP01SS through VSTP09SS and VSTP21SS were collected from the tailings pile located near the entrance to the mine/mill. Samples VSTP1 OSS through VSTP20SS were collected from the old tailings pile located on the eastern portion of the mine/mill. Seven surface soil samples (VSSSO1 SS through VSSS07SS) were collected from stained soil areas around the mine/mill property. The samples were collected from stained areas identified by the START-2. The samples were collected to determine potential contamination associated with these sources. Odor and staining was noted during sample collection. One co-located surface water and sediment sample (VSMW01SW and VSMW01SD) was collected from the mine pit water. The sample was collected within the overland surface water drainage route identified by the ST ART -2. The sample was collected to determine potential contamination associated with this source. The surface water sample was clear and blue-green in color. No odor or staining was noted during the surface water sample collection. The sediment sample appeared to consist of silty sand to fine gravel, gray to light brown in color, with a slight odor. No staining was noted during sediment sample collection. One sediment sample (VSPP01SD) was collected at PPE 1 from the confluence of the tailings pile and the pond located near the entrance of the mine/mill. One sediment sample (VSPP02SD) was collected at PPE 2 from the potential overland flow from the tailings pile to the unnamed creek located near the entrance of the mine/mill. One sediment sample (VSPP03SD) was collected at PPE 3 from the northwest corner of the mine pit water area. One sediment sample (VSPP04SD) was collected from PPE 4 near the southwest portion of the old tailings pile at the confluence with an unnamed creek. 10:START-2\01020028\S759 6-24 ------- 6.12.6 Analytical Results 6.12.6.1 Surface Soil Sample Results The START -2 collected a total of 38 surface soil samples for TAL metals analyses: twelve waste rock samples (VSWP01SS through VSWP12SS); twenty-one tailings samples (VSTP01SS through VSTP21SS); and seven surface soil samples (VSSSO1SS through VSSS07SS) from areas of stained soil. Seven surface soil samples also were analyzed for pesticide/PCBs and SVOCs. In waste rock samples, significant concentrations of cadmium ranged from 27.9 mg/kgto 234 mg/kg. Significant concentrations of lead ranged from 1,520 mg/kgto 76,500 mg/kg. Significant concentrations of mercury ranged from 0.26 mg/kg to 1.5 mg/kg. Significant concentrations of zinc ranged from 3,450 mg/kgto 20,600 mg/kg. In tailings samples, a significant concentration of lead was detected at 4,710 mg/kg. A significant concentration of mercury was detected at 0.17 mg/kg. Significant concentrations of zinc ranged from 2,610 mg/kgto 5,870 mg/kg. In samples collected from stained soil areas, significant concentrations of cadmium ranged from 24.7 mg/kgto 940mg/kg. Significant concentrations of copper ranged from 218 mg/kgto 461 mg/kg. Significant concentrations of lead ranged from 771 mg/kgto 181,000 mg/kg. Significant concentrations of mercury ranged from 0.15 mg/kgto 6.0 mg/kg. Significant concentrations of zinc ranged from 3,560 mg/kgto 431,000 mg/kg. Refer to Table 6-6 for complete data results. 6.12.6.2 Surface Water Sample Results Analytes of concern that were in the surface water sample collected from the mine pit water (VSMW01SW) consist of zinc at an estimated concentration of 112 /ig/L. 6.12.6.3 Sediment Sample Results The START-2 collected five sediment samples for TAL metals analyses. Three sediment samples were also analyzed for pesticide/PCBs. No analytes were detected at significant concentrations in the sample from the mine pit. Lead was detected at an elevated concentration of 466 mg/kg and zinc was detected at an elevated concentration of 1,960 mg/kg in VSPP01SD (PPE 1). Cadmium was detected at an elevated concentration of 11.9 mg/kg and zinc was detected at an elevated concentration of 3,670 mg/kg in VSPP03SD (PPE 3). No analytes were detected at elevated concentrations in sediment samples VSPP02SD (PPE 3) or VSPP04SD (PPE 4). Refer to Table 6-7 for complete data results. 10:START-2\01020028\S759 6-25 ------- 6.13 HOPEAND TWIN CABINS MINE 6.13.1 Mine Location Latitude: Longitude: Legal Description: 48° 53' 09.96"N 118° 01' 37.92"W CERCLISID: Sections 7 and 18, Township 39N, Range 38E WAN001002379 County: Contact: United States Department of the Interior Bureau of Land Management Spokane District Office 1103 N. Fancher Spokane, Washington 99212-1275 (509) 536-1200 Stevens 6.13.2 Historical Information and Mine Description/Features The Hope and Twin Cabins Mine is a former copper, gold, and silver mine located in the Fifteen Mile Creek district, Washington. An estimated 100 tons of ore were produced. The ore deposit consists of pyrrhotite containing some chalcopyrite in a mineralized zone about seven feet wide and lying in the acidic dioritic dike rock. The claim is developed by two tunnels, each about 30 feet in length. In addition, there are several open cuts and shallow shafts (Weaver 1920). Historic ownership information from the time of patent to the present is unknown. 6.13.3 START-2 Mine Visit On June 24, 2001, the START -2 visited the Hope and Twin Cabins Mine and conducted a visual inspection of the property and surrounding area (Appendix B, Team 2 Phase 1, Page 13). The area consisted of a shaft and a waste rock pile. The shaft measured approximately 15 feet by 15 feet by 30 feet to water. The waste rock pile measured an estimated 20 feet by 35 feet by 4 feet deep (Appendix A, Photos 29-21 and 29-22). The START-2 did not observe any overland drainage routes from the waste rock pile to surface water. Access to the mine was unrestricted. No residents or potential receptors were observed on the property. No samples were collected at the Hope and Twin Cabins Mine. 10:START-2\01020028\S759 6-26 ------- 6.14 ST. CRISPIN MINE 6.14.1 Mine Location Latitude: 48° 56' 30.99"N Longitude: 117° 47' 07.47"W Legal Description: Section 25, Township 40N, Range 39E CERCLISID: WANOO1002398 County: Stevens 6.14.2 Historical Information and Mine Description/Features The St. Crispin Mine is a former copper, gold, lead, and silver mine situated on Sheep Creek, approximately one mile west of Northport, Washington. The formation exposed in the bed of Sheep Creek is a dark, carbonaceous argillite. A shaft was sunk in the creek to a depth of 16 feet on a mineralized zone in the argillite. Eight other similar mineralized zones are reported to occur to the southwest. Back from the creek a second shallow shaft was sunk and from it several drifts were driven (Weaver 1920). Historical ownership information from the time of patent to the present is unknown. 6.14.3 START-2 Mine Visit On September 13, 2001, the START-2 attempted to locate the St. Crispin Mine. The START-2 followed an access road along Sheep Creek to a campground area at the end of the road. The START-2 continued on foot for approximately a quarter mile along Sheep Creek. No shafts were identified; however, they could have been submersed under water. The ST ART-2 returned to the campground area to collect latitudinal and longitudinal coordinates. No samples were collected at the St. Crispin Mine because the mine was not located. 6.15 NORTHPORT MILL 6.15.1 Mill Location Latitude: Longitude: Legal Description: CERCLISID: County: 48° 56' 31.08"N 117° 45' 15.66"W NE%NW% Section 29, Township 40N, Range 40E WANOO 1002393 Stevens 10:START-2\01020028\S759 6-27 ------- Contact: Dan Dumaine, General Manager Mountain Minerals Northwest Company, Ltd. (a division of Highwood Resources Ltd.) 3403 - 6th Avenue South Lethbridge, Alberta Canada T1J 1GC 6.15.2 Historical Information and Mill Description/Features The Northport Mill is a former rock ore mill situated adjacent to Washington State Highway 25, in Northport, Washington. The property was listed under Kendrick Mercantile Company (1925), Mines Management, Inc. (1951), Idaho Continental Mines, Inc. (1964), Silver Crown Mining Company, Inc. (1970), Tri H Mining Company, Inc. (1979), Crown-S, Inc. (1981), Northport Mill (1985), Matovich Mining Industries, Ltd. (1990), and Mountain Minerals Northwest Company, Ltd. (1992). Mountain Minerals Northwest Company, Ltd., is a division of Highwood Resources Ltd., the current property owner. The property occupies approximately 16 acres. (Pepper 2001) Highwood Resources, Ltd., operated a rock ore mill at the site from the late 1980s to early 1990s. The plant feed was impure barite rock mined in the vicinity. The ore was processed for barium sulfate. The rock ore was crushed then ground, with barite separated using floatation processes. Various chemicals and reagents were added to cause the barite to float and the calcium carbonate and silica to settle during floatation. The material that did not float was pumped to a tailings pond by overhead piping. The tailings pond is lined with a high-density polyethelene (HDPE) 80 millimeters (Pepper 2001). The lined tailings pond has a waste water re-circulation system of approximately 10,000 cubic feet of volume (Ecology 1990). The dried product was pneumatically conveyed (blown by dry air) through an underground pipeline to the product storage silo (Pepper 2001). In August 2002, Highwood Resources, Ltd., the current property owner, conducted the disposal of laboratory chemicals and drummed waste/tailings present on the property. Disposal activities were conducted by Spencer Environmental, Portland, Oregon. An inventory of chemicals and wastes/tailings that were removed from the site was provided to the EPA. As of September 2002, twenty drums of mill reagents remain on site. All twenty drums have been overpacked. The property owner is exploring opportunities for use of the reagents elsewhere and continues to address the environmental issues with this site under the direction of Ecology. (Dumaine 2002). 10:START-2\01020028\S759 6-28 ------- 6.15.3 EPA Visit On November 28, 2001, EPA personnel visited the Northport Mill site and conducted a visual inspection of the property and surrounding area (Figure 6-15; Appendix B, EPA Logbook, Pages 1 through 5). The property is fenced and access is restricted by a locked gate. Representatives of Highwood Resources Ltd. (Dan Dumaine and Terri Pepper) and representatives of the Colville Confederated Tribes (Patti Stone and Don Hurst) were present during the visit. The area consisted of two ASTs, a product storage silo, a conveyor plant, a tailings pond, an ore rock pile, a process building with chemical feeders and floatation cells, a mill building with an adjoining thickener room, a dryer, an assay laboratory, an office and a "portable-type" building used for sample preparation (Appendix A, Photos 47-1 through 47-21). The capacity of each of the ASTs was estimated at 8,000 to 10,000 gallons (Appendix A, Photo 47-4). The property representatives were not knowledgeable of what the tanks were used for and believed they were empty. Three barrels observed on the property contained soil-like material (Appendix A, Photo 47-6). According to Dan Dumaine, he sampled the barrels in the summer of 2001. At the time of the visit, he had not received the sample results. A tailings pond was also observed on the property. Access to the tailings pond is restricted by a fence (Appendix A, Photo 47-11). According to Terri Pepper, the pond is lined with an HDPE liner. The volume of solid material observed at the bottom of the tailings pond was estimated to be 150 feet by 80 feet by 2 feet deep. Mr. Dumaine mentioned that he also collected samples from the tailings pond in the summer of 2001. At the time of the visit, he had not received the sample results. Inside the building that housed the thickener room, numerous drums and containers were observed. Some labels indicated contents including fatty acids, promoters, frothers, caustic soda, potassium chloride, ammonia acetate, and floatation agents (Appendix A, Photo 47-16). Inside the assay laboratory, numerous sample jars and containers were observed with labels indicating oxidizers, hydrochloric acid, amberine, reagents, and others (Appendix A, Photos 47-19 and 47-20). Sheep Creek is located approximately 150 feet from the mill. No overland drainage routes from the tailings pond to Sheep Creek were observed. No residents or potential receptors were observed on the property. No samples were collected at the Northport Mill. During the visit, Mr. Pepper and Mr. Dumaine briefly discussed plans by the property owner to reclaim the site. Some of the planned activities include the proper abandonment of the tailings pond, dismantling and removing some of the equipment found throughout the property, and the proper removal/disposition of chemical substances on the property. 10:START-2\01020028\S759 6-29 ------- 6.16 LERO I/NO RIHPORT SMELTER 6.16.1 Smelter Location Latitude: Longitude: Legal Description: 48° 55'23.16"N County: CERCLISID: 117° 46' 02.28"W Section 33, Township 40N, Range 40E WAD988507323 Stevens Smelter Owner/Contact: Murray McConnachie K.E.S. Contracting Ltd. 1252 Bay Avenue Trail, British Columbia Canada VIR 4 A6 (250) 368-5222 6.16.2 Historical Information The LeRoi/Northport Smelter is a former smelter located northeast of the town center of Northport, Washington, along Highway 25. The city of Northport is located along the east bank of the Columbia River approximately 7 miles south of the U.S.-Canada border in Stevens County. (URS 1993) The Northport-Waneta Road borders the LeRoi/Northport Smelter site along the south and east. Highway 25 defines the western boundary of the site. The Burlington Northern Sante Fe Railway (formerly the Spokane Falls and Northern Railroad) runs parallel to the Columbia River and designates the northern site boundary. The Columbia River is located approximately 200 feet north of the LeRoi/Northport Smelter property. Properties west of the site are residential homes. Smelter Hill is located directly east of the site and Silver Crown Mountain is south of the site. A city park with an area of approximately 10 acres is located northwest of the site along the Columbia River, approximately 50 feet from the site. (URS 1993) The property encompasses approximately 32 acres and is accessed from the Northport-Waneta Road via Highway 25 (SAIC 1997). The ground surface generally slopes toward the Columbia River in elevation from about 1,360 feet above msl at the site to 1,290 feet above msl, the normal pool elevation for the Columbia River (SAIC 1997). The former smelter buildings, which are no longer standing, included the furnace building, the roaster building, and the crusher and ore building (Heritage 1981). Beginning in 1897, the smelter refined copper, lead, and silver ores from mines in northeast Washington, as well as copper ore from British Columbia, Canada (DHHS 1999). In 1901, the LeRoi Company smelting operations reorganized as the Northport Smelting and Refining Company 10:START-2\01020028\S759 6-30 ------- (URS 1993). By 1908, it was one of the largest smelters on the West Coast, processing 500 tons of ore per day (URS 1993). In 1909, the smelter closed because of competition from another smelter located in Trail, British Columbia (URS 1993). During World War I, the government demand for lead encouraged the Northport Mining and Smelting Company to reopen and process the lead ores that had been discovered at Leadpoint, Washington, approximately 9 miles east of Northport (URS 1993). In September 1914, Jerome Day purchased the smelter and renovated it to accommodate lead ores (URS 1993). The government curtailed its lead purchases in 1921, and subsequently, the smelter closed and was dismantled in 1922, after 24 years of sporadic operation (DHHS 1999). After the smelter closed, the American Smelting and Refining Company purchased the site. The company removed the smelting equipment and transported it to a smelter elsewhere (URS 1993). Between 1922 and 1953, the inactive site was purchased by J.D. Harms. Between 1953 and 1969, a lumber mill went into operation on the property (URS 1993). In 1975, Cecil Frazier purchased the property and operated the lumber mill (URS 1993). In 1985, Steve Frazier purchased the property and business and operated the mill under the name SSF Building Materials until the property was sold to the current owner in 2001. 6.16.3 Smelter Description/Features Refer to Appendix F for historical site maps. The smelter, Breen Copper Smelter, operated from 1896 until 1901. The initial smelter operations were rudimentary and involved releases of large quantities of pollutants. The tellurium ore was more difficult to process; however, it contained high enough amounts of copper and gold to make the process worthwhile. Tellurium is naturally occurring and belongs to the same family of elements as selenium and sulfur. Because of the tellurium, the ore had to be burned or heated to release the minerals. The burning released high amounts of sulfur dioxide into the air. (URS 1993) The ore was processed by heap roasting, which involves open burning of the raw ore prior to placing it in a mineral filtration furnace. The heap roasting process produced a disagreeable sulfur odor; the local citizens termed the burning piles "stink piles." Local farmers believed that the heap roasting process was poisoning the nearby soils. (URS 1993) A slag brick platform was used for the initial burning, or heap roasting, of the ore. The ore was piled on the brick platform to an approximate depth of 4 feet. Cord wood was then stacked on top of the ore pile and ignited. The tellurium in the ore would be vaporized during this process, thus freeing the gold and copper for smelting. The location of this brick platform is where the Northport city wells are 10:START-2\01020028\S759 6-31 ------- currently located. Refer to Appendix G for Northport city wells analytical results collected by Stevens County. (URS 1993) The burned ore was then placed into the furnace where the separation of the minerals took place. Limerock was used during the flux process. Tap holes were located at different levels in the furnace to filter the minerals and rocks (including copper, iron and slag rock). The tap hole for the iron and slag rock was located higher than the copper tap hole. The iron and slag rock collected from this filtration was considered waste. The copper mineral was collected and loaded into box cars for shipment to a copper refinery. (URS 1993) Because gold is heavy, it settled to the bottom of the furnace and formed a gold matte. After the gold accumulated to a thickness of 14 inches, the furnace was shut down. Once the furnace and materials cooled, the sides of the furnace were removed to gain access to the gold matte, which was then pried from the furnace and cut into pieces before being loaded into box cars and shipped to a gold refinery. (URS 1993) The lead smelter used a process more sophisticated than that used in the copper and gold process of the previous decade, although a large quantity of sulfur (approximately 30 tons per day) was still being discharged into the air. Filters for the smokestacks were added later. (URS 1993) In the days of the copper and gold smelter, two large steam engines, fueled by coal, provided power. Both flywheel steam engines were hooked onto one long line shaft. On the other end of the line shaft, a dynamo produced 10,000 volts of electricity prior to being boosted by a generator that provided up to 100,000 volts. Once the smelter reopened to process lead ores, a high-voltage line from Canada supplied the power, and the steam plant was shut down. (URS 1993) The abandoned and dismantled smelter remained inactive after closure in 1922. The town of Northport demolished the buildings for the usable brick. One building retained enough walls to provide an ice-skating rink during the winter. The railroad was abandoned and the tracks salvaged. (URS 1993) The smelting operations produced a tailings waste referred to as slag. The slag was usually placed in piles near the smelter for temporary or permanent disposal. Historical photographs indicate possible tailings piles located on the northeast portion of the property. The COCs in the slag are arsenic, copper, lead, mercury, and zinc. SSF Building Materials, when operational, was one of the largest businesses in Northport, employing from 18 to 25 people. The entire site was used for the mill. The southern half of the property maintained the main lumber operations. The northern half, which contained the smelter remnants, was used to store lumber products and old metal parts such as cars, piping, and roofing. The lumber mill 10:START-2\01020028\S759 6-32 ------- processed mostly cedar wood from rough-dimension lumber into exterior siding and exterior paneling. The mill process included cutting the wood, drying the cut wood, and shipping it. Mill operations were run on propane. All water used for the mill operations was obtained from the city water supply. The mill did not discharge to or collect water from the Columbia River. (URS 1993) The scrap wood materials, including sawdust, were sent to Kettle Falls for the Kettle Falls Water Power Company, which burned the material for energy. Originally, the lumber mill burned the scrap wood on site inside a wigwam burner. No wood treatment or chemical use is reported in the past mill operations. (URS 1993) Environmental concerns in the Northport area have been investigated since 1925. In 1925, the area became involved in the first international case concerning air pollution. The Washington State Department of Health and Ecology conducted an investigation of the furan and dioxin reported in the Columbia River. A PA and SI was conducted by the EPA in 1993. The site inspection stated antimony, arsenic, copper, and lead were potentially deposited on site as a result of the former smelter operations, as they were detected on site at significant concentrations. (URS 1993) Ecology sampled soil and slag piles at the LeRoi/Northport Smelter in 1997. Sample results showed levels of metals two or three orders of magnitude above background. Concentrations of up to 1,010 mg/kg arsenic; 337 mg/kg cadmium; 33,400 mg/kg copper; 20,200 mg/kg lead; and 1,750 mg/kg zinc were detected (Gregory 2000a). Ecology planned to conduct a groundwater investigation at the site; however, due to availability of resources, this has not been pursued (Gregory 2000b). 6.16.4 START-2 Smelter Visit On June 29 and September 13, 2001, the START-2 visited the LeRoi/Northport Smelter and conducted a visual inspection of the property and surrounding area (Figure 6-16; Appendix A, Photos 33-1 through 34-4, 42-1 through 42-8, 46-4 through 46-10; Appendix B, Boat Team, Pages 13 through 17; Team 1 Phase 2, Page 15; Team 2 Phase 2, Pages 20 through 22). The START-2 and EPA personnel observed areas of black glassy sand-like material along the bank of the Columbia River. A public boat launch is located directly over this material. The ST ART -2 characterized the material as slag. Sediment samples were collected at the Columbia River from locations near the boat launch and sand bar/beach area. On September 13, 2001, the START-2, the EPA TM, Don Hurst of Fulcrum Environmental, and the property owner conducted a walk-thro ugh of the property. An area where slag bricks had been deposited was observed south of the former smelter operations. A potential former tailings pile was 10:START-2\01020028\S759 6-33 ------- observed west of the slag brick area. City water wells were observed on the former LeRoi/Northport Smelter property. The START-2 collected sediment and soil samples from locations on the property. Water samples were not collected from the City supply wells because local officials did not grant EPA permission to access the wells to collect samples. 6.16.5 Sampling Locations Sample locations are depicted in Figures 6-17 and 6-18. Three surface soil samples (NSSL01SS through NSSL03SS) were collected west of the former tailings area underneath the slag bricks. The samples were collected within the overland surface water drainage routes identified by the START-2. The samples were collected to determine potential contamination associated with this source. The samples appeared to consist of very fine to medium grained sand with sandy reddish slag and yellowish stain. No odor was noted during sample collection. Nine sediment samples (NSSL01SD through NSSL09SD) were collected from slag areas along the Columbia River adjacent to the smelter (PPE 3). The samples were collected within the overland surface water drainage routes identified by the START -2. The samples were collected to determine potential contamination associated with this source in the Columbia River. The samples appeared to consist of dark brown to black medium sand. No odor or staining was noted during sample collection. Sediment sample NSPP01SD was collected at the confluence of the former tailings pile and the ditch (PPE 1). The sample appeared to consist of saturated, light brown silt. No odor or staining was noted during sample collection One sediment sample (NSDT01SD) was collected in the western portion of a recently constructed ditch where the former tailings pile potentially was located (PPE 2). The sample was collected within the overland surface water drainage routes identified by the ST ART -2. The sample was collected to determine whether potential contamination associated with the tailings pile is migrating to surface water. The sample appeared to consist of light brown sand fine to medium coarse grained. No odor or staining was noted during sample collection. 6.16.6 Analytical Results 6.16.6.1 Surface Soil Sample Results The START -2 collected three surface soil samples from tailings for TAL metals analyses. Significant concentrations of arsenic ranged from 209 mg/kg to 297 mg/kg. Significant concentrations of cadmium ranged from 26.9 mg/kg to 105 mg/kg. Significant concentrations of copper ranged from 10:START-2\01020028\S759 6-34 ------- 2,430 mg/kgto 14,700 mg/kg. Significant concentrations of lead ranged from 2,600 mg/kgto 10,500 mg/kg. Significant concentrations of mercury ranged from 0.28 mg/kg to 0.40 mg/kg. Significant concentrations of zinc ranged from 978 mg/kgto 5,420 mg/kg. Refer to Table 6-8 for complete data results. 6.16.6.2 Sediment Sample Results The START-2 collected 9 sediment samples from slag areas along the Columbia River (PPE 3) for TAL metals analyses. One sediment sample was also analyzed for pesticide/PCBs and TOC. Significant/elevated concentrations of arsenic ranged from 7.5 mg/kg to 41.4 mg/kg. Significant/elevated concentrations of cadmium ranged from 1.5 mg/kg to 4.9 mg/kg. Significant/elevated concentrations of copper ranged from an estimated concentration of 238 mg/kg to an estimated concentration of 2,960 mg/kg. Significant/elevated concentrations of lead ranged from 230 mg/kg to 845 mg/kg. Mercury was detected at a significant/elevated concentration of 0.29 mg/kg. Significant/elevated concentrations of zinc ranged from 1,520 mg/kgto 16,900 mg/kg. Refer to Table 6-9 for complete data results. The START-2 collected two sediment samples from on-site ditches potentially adjacent to former tailings piles (PPE 1 and PPE 2) for TAL metals analyses. Arsenic was detected at elevated concentrations ranging from 17.6 mg/kg to 39.9 mg/kg. Cadmium was detected at elevated concentrations ranging from 2.6 mg/kg to 5.9 mg/kg. Copper was detected at elevated concentrations ranging from 124 mg/kg to 1,090 mg/kg. Lead was detected at elevated concentrations ranging from 87.1 mg/kgto 887 mg/kg. Zinc was detected at elevated concentrations ranging from 92.2 mg/kgto 223 mg/kg. Refer to Table 6-10 for complete data results. 6.17 BLACK ROCK MINE/MILL 6.17.1 Mine/Mill Location Latitude: Longitude: Legal Description: 48° 52' 13.45"N 117° 42' 22.12"W CERCLISID: Section 24, Township 39N, Range 40E WAN001002369 County: Stevens 10:START-2\01020028\S759 6-35 ------- Contact: Mick Vaagen and Trent Lang Vaagen Brothers Lumber 565 W 5th Colville, Washington 99114 (509) 684-5071 6.17.2 Historical Information The Black Rock Mine/Mill is a former lead and zinc mine/mill located in the Northport mining district, Washington (Derkey et al. 1990). The mine produced six carloads of ore prior to 1920 and 5,280 tons of ore between 1922 and 1924 (Derkey et al. 1990). Total production was 140,856 pounds of lead; 7,903,447 pounds of zinc, and 377 ounces of silver (Derkey et al. 1990). A newmill was built in 1923 (Battien 1998). The mine was still producing in 1943, but no production results are available (Battien 1998). By 1964 the mine/mill was under option to American Zinc (Battien 1998). Historical ownership from 1964 to the present is unknown. 6.17.3 Mine/Mill Description/Features The Black Rock Mine/Mill is situated on the east side of Deep Creek, 6 miles northeast of Northport, Washington. The property consists of seven claims and seven acres of deeded land. Ore occurs disseminated along bedding planes in white, nonsilicified dolomitic marble. Two ore bodies, indicated by drilling, appear to have moderate ore reserves with an average grade of 8% zinc. The property is developed by a 250-foot incline, 260-foot adit, and considerable drifting and stoping. (Huntting 1956) 6.17.4 START-2 Mine/Mill Visit On June 19, 2001, the START -2 visited the Black Rock Mine/Mill and conducted a visual inspection of the property and the surrounding area (Figure 6-19; Appendix A, Photos 15-21 through 16-13; Appendix B, Team 1 Phase 1, Pages 10 through 12). The mine/mill area consisted of a waste rock pile measuring 180 feet by 120 feet by 30 feet deep located east and adjacent to Northport/Alladin Road. A shaft was identified adjacent to the waste rock pile on the southern portion measuring 10 feet by 5 feet by unknown depth. No water was flowing from the shaft. The remnants of a mill building and two sorting bins were located. The collapsed mill building measured 15 feet by 20 feet and was located adjacent to the waste rock pile on the southern portion and west of the shaft. One sorting bin was located within the waste rock pile and measured 10 feet by 10 feet. The second sorting bin or potential collapsed 10:START-2\01020028\S759 6-36 ------- building was located east of the waste rock pile and measured 10 feet by 10 feet. A residence was located 20 feet west of Northport/Alladin Road. Farm buildings were located 40 feet west of Northport/Alladin Road. No PPEs were identified by the START-2. Access to the mine/mill is unrestricted and the START -2 noted evidence of people removing waste rock from the property. No logging or grazing was noted in the mine/mill area. 6.17.5 Sample Locations Sample locations are depicted in Figure 6-20. Three waste rock samples (BRWP01SS through BRWP03SS) were collected from the waste rock pile. The samples were collected within the overland surface water drainage routes identified by the START -2. The samples were collected to determine potential contamination associated with this source. The samples appeared to consist of light brown medium sand with gravel. No odor or staining was noted during the sample collection. Two surface soil samples (BRMSOlSSand BRMS02SS) were collected near the collapsed mill building. The samples were collected within the overland surface water drainage routes identified by the START-2. The samples were collected to determine potential contamination associated with this source. The samples appeared to consist of light brown loamy sand. No odor or staining was noted during sample collection. 6.17.6 Analytical Results 6.17.6.1 Surface Soil Sample Results The START -2 collected five surface soil samples for TAL metals analyses: three waste rock samples (BRWP 01SS through BRWP03SS) and two surface soil samples (BRMSOlSSand BRMS02SS) near the collapsed mill building. In waste rock samples, significant concentrations of cadmium ranged from 688 mg/kgto 1,090 mg/kg. Significant concentrations of copper ranged from 228 mg/kg to 398 mg/kg. Significant concentrations of lead ranged from 555 mg/kgto 1,040 mg/kg. Significant concentrations of mercury ranged from 10 mg/kg to 26.4 mg/kg. Significant concentrations of zinc ranged from 141,000 mg/kgto 207,000 mg/kg. In soil samples collected near the collapsed mill building, significant concentrations of cadmium ranged from 27.3 mg/kg to 1,630 mg/kg. A significant concentration of copper was detected at 192 mg/kg. A significant concentration of lead was detected at 1,800 mg/kg. A significant concentration of 10:START-2\01020028\S759 6-37 ------- mercury was detected at 0.19 mg/kg. Significant concentrations of zinc ranged from 7,500 mg/kgto 402,000 mg/kg. Refer to Table 6-11 for complete data results. 6.18 GREAT WES TERN MINE 6.18.1 Mine Location Latitude: Longitude: Legal Description: 48° 52' 06.24"N 117" 41' 48.48"W CERCLISID: SE% Section 24, Township 39N, Range 40E WAN001002377 County: Contact: Mick Vaagen and T rent Lang Vaagen Brothers Lumber 565 W 5th Colville, Washington 99114 (509) 684-5071 Stevens 6.18.2 Historical Information The Great Western Mine is a former lead and zinc mine located six miles from Northport, Washington, one and one half miles off Deep Creek Road, near Black Rock and Last Chance mines/mills (Derkey et al. 1990; Battien 1998). The mine produced $40,000 prior to 1917 (Derkey et al. 1990). Total production was 434,072 pounds of lead, 125 ounces of silver, 936,524 pounds of zinc (Derkey et al. 1990). In 1943, the mine was owned by L.J. Magney (Battien 1998). Historical ownership information from the time reported to the present is unknown. 6.18.3 Mine Description/Features The Great Western Mine is in the middle dolomite unit of the Metaline Formation (Derkey et al. 1990). The mine consists of two claims known as Great Western and Empire. The ores are chiefly carbonate of zinc with some carbonate of lead, together with a subordinate amount of galena and sphalerite (Weaver 1920). The known length of the mineralized zone is 1,000 feet. The mine is developed by 1,000 feet of adits and about 200 feet in 3 shafts. (Huntting 1956) 10:START-2\01020028\S759 6 - 38 ------- 6.18.4 START-2 Mine Visit On June 21, 2001, the START -2 visited the Great Western Mine and conducted a visual inspection of the property and the surrounding area (Figure 6-21; Appendix A, Photos 17-23 through 18-13; Appendix B, Team 1 Phase 1, Pages 15 through 17). The mine area consisted of three waste rock piles, three shafts or shaft systems, and two adits. Waste rock pile 1 was located adjacent to shaft 1 system and measured 18 feet by 30 feet by 3 feet deep. Shaft 1 system comprised 3 shafts within 30 feet of each other. No discharge was noted by the ST ART-2. West of shaft 1 system and waste rock pile 1 was shaft 2 which measured 15 feet across. No waste rock pile was associated with this shaft and no discharge was noted by the START-2. Continuing west, waste rock pile 2 and shaft 3 were located. Waste rock pile 2 measured 18 feet by 30 feet by 3 feet deep. Approximately 120 feet west of shaft 3 and waste rock pile 2 was adit 1 measuring 10 feet by 5 feet by unknown depth. Adit 1 was located on the east side of Knudson Road; no drainage was noted by the START-2. Waste rock pile 3 was located on the west side of the Knudson Road and measured 90 feet by 90 feet by 6 feet deep. A collapsed adit house and adit 2 were located adjacent to waste rock pile 3 on the northern side. No drainage from this adit was noted by the START-2. No PPEs were identified by the START-2. Access to the mine is unrestricted. The START-2 noted evidence of grazing and logging within 0.25 mile of the mine. 6.18.5 Sampling Locations Sample locations are depicted in Figure 6-22. Two waste rock samples (GWWP01SS and GWWP02SS) were collected from the waste rock pile south of Knudson Road. The samples were collected within the overland surface water drainage routes identified by the ST ART -2. The samples were collected to determine potential contamination associated with this source. The samples appeared to consist of brown coarse sand and gravel. No odor or staining was noted during the sample collection. 6.18.6 Analytical Results 6.18.6.1 Surface Soil Sample Results The START -2 collected two surface soil samples from waste rock for TAL metals analyses. Significant concentrations of cadmium ranged from 166 mg/kg to 490 mg/kg. Significant concentrations of lead ranged from 6,200 mg/kg to 24,000 mg/kg. Significant concentrations of mercury ranged from 2.5 mg/kg to 4.3 mg/kg. Significant concentrations of zinc ranged from 52,700 mg/kg to 118,000 mg/kg. Refer to Table 6-12 for complete data results. 10:START-2\01020028\S759 6-39 ------- 6.19 LAST CHANCE MINE/MILL 6.19.1 Mine/Mill Location Latitude: Longitude: Legal Description: 48° 51' 59.40"N 117° 41' 56.40"W SW% SE% Section 24, Township 39N, Range 40E CERCLISID: WASFN1002162 Stevens County: Contact: Mick Vaagen and T rent Lang Vaagen Brothers Lumber 565 W 5th Colville, Washington 99114 (509) 684-5071 6.19.2 Historical Information The Last Chance Mine/Mill is a former lead, silver, and zinc mine/mill located 5 miles southeast of Northport, Washington (Derkey et al. 1990; E & E 2000). From Northport, the mine/mill is accessed via Colville-Aladdin Northport Road, which runs on the west side of the property (E & E 2000). The mine/mill is reported to have produced $600,000 prior to 1937 (Derkey et al. 1990). One carload of ore was shipped in 1938 and small amounts of concentrate were shipped between 1947 and 1949 (Derkey et al. 1990). Between 1904 and 1954, the mine/mill produced 5,937,708 pounds of lead; 18,567 pounds of silver; and 110,110 pounds of zinc (Derkey et al. 1990). The construction of the floatation mill is reported to have begun in 1940 ( E & E 2000). Juniper Lead Company owned the mine/mill from 1907 to 1926 (E & E 2000). Reports indicate that in 1938 the property was owned by Mrs. A. Baker, the widow of the previous owner Al Baker (E & E 2000). Last Chance Consolidated Mines, Inc., was listed as the owner since 1948 (Battien 1998). Historical ownership information from 1948 to the present is unknown. 6.19.3 Mine/Mill Description/Features The Last Chance Mine/Mill consists of three patented claims and a mill site (Huntting 1956). The mine is in the middle dolomite of the Metaline Formation (Mills 1977). Ore shoots occur in a mineralized shear zone in dolomite, especially at fracture intersections. The zone is as much as 5 feet wide (Huntting 1956). Two distinct veins are remarkably uniform in strike and dip over a combined strike length of 650 feet and a dip length of at least 500 feet. The veins are emplaced along faults and 10:START-2\01020028\S759 6-40 ------- appear parallel or sub-parallel to bedding (Mills 1977). The property is developed by four adits, more than 1,000 feet in open cuts and trenches, and a 60-ton gravity-floatation mill (Huntting 1956). 6.19.4 START-2 Mine/Mill Visit On June 20, 2001, the START -2 visited the Last Chance Mine/Mill and conducted a visual inspection of the property and surrounding area (Figure 6-23; Appendix A, Photos 16-14 through 17-22; Appendix B, Team 1 Phase 1, Pages 13 and 14). The mine/mill area consisted of two waste rock piles. The larger pile was located north of the north shaft and measured 1,320 feet by 75 feet by 2 feet deep. The smaller waste rock pile was located west of the north shaft and measured 75 feet by 45 feet by unknown depth. A tailings pile surrounding a former house or office and mill building was located west of the waste rock piles and measured 600 feet by 105 feet by 3 feet deep. East of the waste rock piles and the abandoned road the ST ART -2 located a north and south shaft and an adit upgradient from the north shaft. A seep was located near the mouth of the south shaft which flows into the unnamed creek. Further east of the shafts, an unnamed creek was documented. The shaft discharge flowed into the unnamed creek (PPE 1) and continued west past the waste rock piles, through the tailings pile (PPE 2) and infiltrated the ground prior to reaching the Colville-Alladin Northport Road. South of the point of infiltration, a drainage ditch and culvert were observed. The potential flow from the culvert travels by sheet flow into Deep Creek. Access to the mine/mill is unrestricted. No logging or grazing was noted in the mine/mill area. 6.19.5 Sampling Locations Sample locations are depicted in Figure 6-24. Three waste rock samples (LCWP01SS through LCWP03SS) were collected from the larger waste rock pile located north of the north shaft. The samples were collected within the overland surface water drainage routes identified by the ST ART -2. The samples were collected to determine potential contamination associated with this source. The samples appeared to consist of dry, brown, fine sand/silt. No odor or staining was noted during sample collection. Three tailings samples (LCTP01SS through LCTP03SS) were collected from the tailings pile located near the former mill building. The samples were collected within the overland surface water drainage routes identified by the START-2. The samples were collected to determine potential contamination associated with this source. The samples appeared to consist of brown-orange fine sand/silt. No odor was noted during sample collection. 10:START-2\01020028\S759 6-41 ------- Three surface soil samples (LCMSO1SS through LCMS03SS) were collected from the former mill building area. The samples appeared to consist of medium brown, fine sand with gravel. No odor was noted during sample collection. One surface water sample was collected from the discharge of water originating at the shaft (LCADO1SW). The sample was collected within the overland surface water drainage route identified by the START-2. The sample was collected to determine potential contamination associated with this source. The sample was clear and no odor or staining was noted during sample collection. Sediment sample LCPPO1SD was collected at the confluence of the adit discharge and the unnamed creek (PPE 1). The sample appeared to consist of gray-brown-black medium sand with gravel. The sample was wet with an organic odor. No staining was noted during sample collection. Sediment sample LCPP02SD was collected at the confluence of the tailings and the unnamed creek (PPE 2). The sample appeared to consist of black-brown medium sand/silt. The sample was wet with no odor. No staining was noted during sample collection. 6.19.6 Analytical Results 6.19.6.1 Surface Soil Sample Results The START-2 collected nine surface soil samples for TAL metals analyses: three waste rock samples (LCWP01 SS through LCWP03SS); three tailings samples (LCTP01SS through LCTP03SS); and three surface soil samples from the former mill building area (LCMSO 1SS through LCMS03SS). In waste rock samples, significant concentrations of cadmium ranged from 285 mg/kgto 349 mg/kg. Significant concentrations of lead ranged from 113,000 mg/kg to 170,000 mg/kg. Significant concentrations of mercury ranged from 1.5 mg/kg to 2.7 mg/kg. Significant concentrations of zinc ranged from 67,700 mg/kgto 89,800 mg/kg. In tailings samples, significant concentrations of cadmium ranged from 269 mg/kg to 518 mg/kg. Significant concentrations of lead ranged from 72,900 mg/kgto 110,000 mg/kg. Significant concentrations of mercury ranged from 1.3 mg/kg to 2.3 mg/kg. Significant concentrations of zinc ranged from 63,900 mg/kg to 112,000 mg/kg. In soils samples collected from the former mill building area, significant concentrations of cadmium ranged from 136 mg/kgto 471 mg/kg. Copper was detected at a significant concentration of 2,790 mg/kg. Significant concentrations of lead ranged from 18,000 mg/kgto 86,200 mg/kg. Significant concentrations of mercury ranged from 1.3 mg/kg to 2.6 mg/kg. Significant concentrations of zinc ranged from 36,900 mg/kgto 107,000 mg/kg. Refer to Table 6-13 for complete data results. 10:START-2\01020028\S759 6-42 ------- 6.19.6.2 Surface Water Sample Results The surface water sample (LCADO1SW) collected at the shaft contained zinc at an estimated concentration of 459 ^ig/L. 6.19.6.3 Sediment Sample Results The START -2 collected two sediment samples at PPEs to the on-site unnamed creek for TAL metals analyses. Cadmium was detected at a elevated concentration of 56.9 mg/kg. Elevated concentrations of lead ranged from 385 mg/kgto 14,600 mg/kg. Elevated concentrations of mercury ranged from 0.46 mg/kg to 1.2 mg/kg. Elevated concentrations of zinc ranged from 1,100 mg/kgto 13,400 mg/kg. Refer to Table 6-14 for complete data results. 6.20 DEEP CREEK MINE 6.20.1 Mine Location Latitude: Longitude: Legal Description: CERCLISID: County: Contact: 48° 51' 48.96"N 117° 42' 54.36"W N!/2NE% Section 26, Township 39N, Range 40E WASFN1002161 Stevens T erry Richmond Richmond Family Trust 448 North Walnut Colville, Washington 99114 (509) 684-3033 6.20.2 Historical Information The Deep Creek Mine is a former lead, silver, and zinc mine located west of Deep Creek and approximately 7 miles south of Northport, Washington (Derkey et al. 1990, E & E 2000). From Northport the property is accessed via the Colville-Alladin Northport Road, which runs on the east side of the property (E & E 2000). The mine is reported to have produced from 1944 to 1955 (Derkey et al. 1990). Previous owners include the Northport Mining Company (1919-1921); Anaconda Copper Mining Company (1926-1941); Western Knapp Engineering Company (1941-1944); Jamison-Higginbotham Partnership (1944-1947); Goldfields Consolidated Mines (1947-1964); American Zinc Company (1964-1971); Columbia Resources, Inc. (1971-1979); and Great Basins Petroleum, Inc., from 1979 to the 10:START-2\01020028\S759 6-43 ------- current owner, the Richmond Family Trust (E & E 2000). There are no records available after 1979 with regards to ownership changes, and no information is available regarding other periods of ownership. 6.20.3 Mine Description/Features The Deep Creek Mine is located approximately 100 yards from the west bank of Deep Creek. Mineralization occurs in the Metaline Formation (Derkey et al. 1990). The mine was operated from approximately 1944 to 1956, when the mine was shut down (E & E 2000). The maximum depth of development was 850 feet bgs. According to tabulations in 1958, the following quantities of metals were obtained from a total ore production of 763,307 tons: 24,000 pounds of copper; 69 ounces of gold; 15,000,000 pounds of lead; 36,000 ounces of silver; and 66,000,000 pounds of zinc (E & E 2000). The mine was closed in 1956 due to a combination of factors including a shaft fire, rising mining costs, and declining metal prices (E & E 2000). Following the closure, the headframe, hoisting, pumping, and other machinery were removed, and the mine was allowed to flood to within several feet of the shaft collar. (E & E 2000) 6.20.4 START-2 Mine Visit On June 20, 2001, the START -2 visited the Deep Creek Mine and conducted a visual inspection of the property and surrounding area (Figure 6-25; Appendix A, Photos 21-21 through 24-8; Appendix B, Team 2 Phase 1, Pages 6 and 7). The mine area consisted of four waste rock piles. Waste rock pile 1 located adjacent to Deep Creek measured 20 feet by 20 feet by 5 feet deep. There could be potential overland flow from waste rock pile 1 to Deep Creek (PPE 1). The flow of Deep Creek was estimated by the START-2 at 100 cfs. Waste rock pile 2 located adjacent to the main road measured 60 feet by 20 feet by 10 feet deep. Waste rock pile 3 located west of the pad with power tower and fence measured 100 feet by 30 feet by 10 feet deep. Waste rock pile 4 located near an adit on the south end of the property measured 40 feet by 20 feet by 5 feet deep. The roads on the mine property were comprised of waste rock. The entrance road measured 700 feet by 20 feet by 2 feet deep. The road heading south to the adit measured 400 feet by 15 feet by 2 feet deep and also consisted of tailings. Tailings were found scattered throughout the mine area. Concentrated areas were located in two on-site wet areas (one on the south end of the property near the adit measuring 15 feet by 15 feet and one south of the main entrance road measuring 30 feet by 30 feet) and north and west of waste rock pile 2 adjacent to the entrance road. A swampy area was located south of the gated entrance and measured 150 feet by 100 feet. There could be potential flow from this swampy area to Deep Creek (PPE 2). The pad with power tower and fence 10:START-2\01020028\S759 6-44 ------- located between the two wet areas measured 25 feet by 40 feet. A garbage and debris pile was located adjacent to the main road and measured 50 feet by 20 feet by 5 feet deep. West of the garbage and debris pile was an assay building measuring 20 feet by 20 feet. Further west and north four buildings were identified. Building 1 measured 50 feet by 40 feet and contained a winch and four small transformers. Building 2 measured 100 feet by 45 feet and contained two small transformers, motor and pumps, and a foundation. Building 3 measured 40 feet by 40 feet. Building 4 measured 30 feet by 30 feet. Other features on the south end of the property include a concrete pad, a shaft, and a pond. The concrete pad measured 15 feet by 20 feet. The adit in this area measured 4 feet by 3 feet by unknown depth. The adit was not flowing; however, standing water was present. The shaft measured 5 feet by 5 feet by approximately 800 feet deep. The pond measured 20 feet by 20 feet by 5 feet deep. A locked gate was present at the mine; however, one could cross the creek to gain access to the property. A residence was located to the east of the mine and outside of the gated area. No logging or livestock grazing was noted in the vicinity. 6.20.5 Sampling Locations Sample locations are depicted in Figure 6-26. One waste rock sample (DCWP01SS) was collected from waste rock pile 1 located adjacent to Deep Creek. The sample was collected within the overland surface water drainage route identified by the START-2. The sample was collected to determine potential contamination associated with this source. The sample appeared to consist of white, quartz-like rock. No odor or staining was noted during sample collection. Three waste rock samples (DCWP02SS through DCWP04SS) were collected from the waste rock comprising the main road. The samples were collected within the overland surface water drainage routes identified by the START-2. The samples were collected to determine potential contamination associated with this source. The samples appeared to consist of white, quartz-like rock. No odor or staining was noted during sample collection. One waste rock sample (DCWP05SS) was collected from waste rock pile 3 located west of the pad with power tower and fence. The sample was collected within the overland surface water drainage route identified by the START-2. The sample was collected to determine potential contamination associated with this source. The sample appeared to consist of white, quartz-like rock. No odor or staining was noted during sample collection. Nine tailings samples (DCTP01SS through DCTP09SS) were collected from the northern portion of the mine area. The samples were collected within the overland surface water drainage routes 10:START-2\01020028\S759 6-45 ------- identified by the START-2. The samples were collected to determine potential contamination associated with this source. The samples appeared to consist of fine, light brown, dry soil. No odor or staining was noted during sample collection. Three tailings samples (DCTP1 OSS through DCTP12SS) were collected from the wet area located north of the pad with power tower and fence. The samples were collected within the overland surface water drainage routes identified by the ST ART -2. The samples were collected to determine potential contamination associated with this source. The samples appeared to consist of fine, light brown, dry soil. No odor or staining was noted during sample collection. Three tailings samples (DCTP13 SS through DCTP15 SS) were collected on the road leading to the adit. The samples were collected within the overland surface water drainage routes identified by the START-2. The samples were collected to determine potential contamination associated with this source. The samples appeared to consist of fine, light brown, dry soil with some white quartz-like rocks. No odor or staining was noted during sample collection. Three tailings samples (DCTP 16SS through DCTP18SS) were collected from the wet area north of the adit. The samples were collected within the overland surface water drainage routes identified by the START-2. The samples were collected to determine potential contamination associated with this source. The samples appeared to consist of fine, brown, moist soil. No odor or staining was noted during sample collection. One surface water sample (DCAD01SW) was collected from the adit. The sample was collected within the overland surface water drainage route identified by the ST ART -2. The sample was collected to determine potential contamination associated with this source. The sample was clear. No odor or staining was noted during sample collection. 6.20.6 Analytical Results 6.20.6.1 Surface Soil Sample Results The START-2 collected 23 surface soil samples for TAL metals analyses: five waste rock samples (DCWP01SSthrough DCWP05SS) and eighteen tailings samples (DCTP01SSthrough DCTP18SS). In waste rock samples, significant concentrations of cadmium ranged from 24.9 mg/kgto 25.2 mg/kg. Significant concentrations of lead ranged from 558 mg/kgto 799 mg/kg. Significant concentrations of mercury ranged from 0.14 mg/kgto 0.25 mg/kg. Significant concentrations of zinc ranged from 4,220 mg/kgto 7,780 mg/kg for zinc. 10:START-2\01020028\S759 6-46 ------- In tailings samples, significant concentrations of cadmium ranged from 23.8 mg/kgto 425 mg/kg. Significant concentrations of lead ranged from 632 mg/kg to 13,300 mg/kg. Significant concentrations of mercury ranged from 0.17 mg/kg to 3.2 mg/kg. Significant concentrations of zinc ranged from 4,240 mg/kgto 123,000 mg/kg for zinc. Refer to Table 6-15 for complete data results. 6.20.6.2 Surface Water Sample Results Analytes detected in the surface water collected from the adit (DCAD01SW) include lead at 12.9 /ig/L and zinc at an estimated concentration of 558 /ig/L. 6.21 COPPER KING MINE 6.21.1 Mine Location Latitude: Longitude: Legal Description: CERCLISID: County: Contact: 48° 46' 51.60"N 117° 39' 12.24"W Section 20, Township 38N, Range 4IE WAN001002370 Stevens Mick Vaagen and T rent Lang Vaagen Brothers Lumber 565 W 5th Colville, Washington 99114 (509) 684-5071 6.21.2 Historical Information The Copper King Mine is a former copper and silver mine located in the Northport mining district, Washington (Derkey et al. 1990). The mine is reported to have produced between 1904 and 1941 (Derkey et al. 1990). Copper King Mining Company owned the mine from 1905 to 1907 (Battien 1998). United Copper Company operated the mine from 1916 to 1918 and by 1930 ownership changed to Northwest Mines Corporation. In 1950, the mine was owned by Banner Mining Company and in 1976 the mine had been acquired by an eastern syndicate (Battien 1998). Historical ownership information from 1976 to the present is unknown. 6.21.3 Mine Description/Features The Copper King Mine is in a shear zone between the upper and lower units of the Wallace Formation (Derkey et al. 1990). The mine consists of two claims known as the Copper King No. 1 and 10:START-2\01020028\S759 6-47 ------- No. 2. The property is developed by a lower tunnel driven for a distance of 221 feet, an upper tunnel driven for a distance of 285 feet, and a 20-foot shaft (Weaver 1920). The veins range up to 30 feet wide and a low-grade ore body was reported to be 40 feet wide and 500 feet long (Derkey et al. 1990). The ore deposit occurs along the contact between limestone and an intrusive dike (Huntting 1956). 6.21.4 START-2 Mine Visit On June 19, 2001, the START -2 visited the Copper King Mine and conducted a visual inspection of the property and surrounding area (Figure 6-27; Appendix A, Photos 15-6 through 15-20; Appendix B, Team 1 Phase 1, Pages 8 through 10). The mine area consisted of two waste rock piles. One waste rock pile was located east of Alladin Road and southwest of adit 1 and measured 60 feet by 30 feet by 3 feet deep. Adit 1 measured 5 feet by 10 feet. No flow or drainage was noted by the ST ART-2. Adit 2 was located east of adit 1 and measured 5 feet by 10 feet. Adit drainage flowed approximately 75 feet southwest before infiltrating the ground. There is a potential that during heavy flow adit 2 discharge could reach Deep Creek (PPE 1). A retention area was documented where the adit discharge infiltrates the ground measuring 5 feet by 1 feet by 1 feet deep. The retention area was composed of small logs and plastic sheeting which was estimated to retain approximately 15 gallons. A hose was noted south of the retention area extending southwest for approximately 20 feet. To the east of adit 2 the START-2 identified a second waste rock pile and shaft. The waste rock pile measured 75 feet by 120 feet by 6 feet deep. The shaft was surrounded by the waste rock and measured 15 feet by 20 feet by unknown depth. Standing water was noted. No buildings or evidence of buildings were noted on the property. Access to the mine is unrestricted and the START-2 noted recent logging. The START-2 also noted grazing in the area near adit 2. 6.21.5 Sample Locations Sample locations are depicted in Figure 6-28. Two waste rock samples (CKWPOlSSand CKWP02SS) were collected from the waste rock pile surrounding the shaft on the northeast portion of the property. The samples were collected within the overland surface water drainage routes identified by the START-2. The samples were collected to determine potential contamination associated with this source. The samples appeared to consist of fine orange and brown sand with trace gravel and pyrite. No odor or staining was noted during the sample collection. One surface water sample was collected from the discharge of water originating at adit 2 (CKAD01SW). The sample was collected within the overland surface water drainage route identified by 10:START-2\01020028\S759 6-48 ------- the START-2. The sample was collected to determine potential contamination associated with this source. The sample was clear. No odor or staining was noted during sample collection. One sediment sample (CKPP01SD) was collected at the confluence of the adit 2 discharge and the retention area which can flood and flow into Deep Creek (PPE 1). The sample was collected within the overland surface water drainage route identified by the START-2. The sample was collected to determine potential contamination associated with this source. The sample appeared to consist of light brown medium sand with gravel. No odor or staining was noted during sample collection. 6.21.6 Analytical Results 6.21.6.1 Surface Soil Sample Results The START -2 collected two surface soil samples from waste rock for TAL metals analyses. Significant concentrations of copper ranged from 559 mg/kg to 1,700 mg/kg. Mercury was detected at a significant concentration of 0.12 mg/kg. Refer to Table 6-16 for complete data results. 6.21.6.2 Surface Water Sample Results Analytes detected in the surface water sample collected at adit 2 (CKADO1SW) include lead at 17.9 /ig/L and zinc at an estimated concentration of 180 /ig/L. 6.21.6.3 Sediment Sample Results The START -2 collected one sediment sample from the retention pond for TAL metals and pesticide/PCBs analyses. No significant concentrations of TAL metals were detected in the sample. Refer to Table 6-17 for complete data results. 6.22 SIERRA ZINC MINE/MILL 6.22.1 Mine/Mill Location Latitude: Longitude: Legal Description: 48° 46' 28.20"N County: CERCLISID: 117° 40' 06.24"W Section 20, Township 38N, Range 4IE WAN001002396 Stevens 10:START-2\01020028\S759 6-49 ------- Contact: United States Department of the Interior Bureau of Land Management Spokane District Office 1103 N. Fancher Spokane, Washington 99212-1275 (509) 536-1200 6.22.2 Historical Information The Sierra Zinc Mine/Mill is a former gold, lead, silver, and zinc mine/mill off Colville-Alladin Northport Road, south ofNorthport, Washington (Derkey et al. 1990). Sierra Zinc, sometimes called Aladdin or Blue Ridge included eight claims and 180 acres of deeded ground (Battien 1998). The mine/mill was located on the west side of Deep Creek and approximately 4 miles north of Aladdin or 17 miles south of Northport (Battien 1998). The mine is reported to have produced in 1909, 1924, 1925, 1941 through 1944, and between 1950 and 1952 (Derkey et al. 1990). A mill was built in 1942 (Battien 1998). In 1924 and earlier, some development work was performed by T.R Roberts (Battien 1998). Amos E. Huseland filed claims for part of the mine in 1935 (Battien 1998). Other owners include T.C. Higginbotham, Goldfield Consolidated, Tri-Nite, and Coronado. Higginbotham sold the mill to Goldfield Consolidated in 1948 and then bought it back in 1960 (Battien 1998). Tri-Nite purchased the mill in 1962 (Battien 1998). Coronado leased the property with an option to purchase from Tri-Nite in 1972 (Battien 1998). Additional historical ownership from 1972 to the present is unknown. 6.22.3 Mine/Mill Description/Features The Sierra Zinc Mine/Mill consists of seven claims. Alternative names include Alladin Mine and Blue Ridge Mine. The ore deposit consists of galena and sphalerite disseminated in limestone. Quartz veins carry minor amounts of chalcopyrite, galena, molybdenite, pyrite, and sphalerite. The main ore body mined prior to 1944 measured 300 feet along the strike, 200 feet along the dip, and 4 to 12 feet thick. Three smaller ore bodies were mined. The property is developed 8,450 feet in three adits, a 470-foot shaft, and a 300-ton floatation mill. (Huntting 1956) 6.22.4 START-2 Mine/Mill Visit On June 21, 2001, the START -2 visited the Sierra Zinc Mine/Mill and conducted a visual inspection of the property and surrounding area (Figure 6-29; Appendix A, Photos 24-10 through 28-2; Appendix B, Team 2 Phase 1, Page 8 and supplemental pages supplied by Guy Gregory of Ecology). The property was accessed by Colville-Aladdin Northport Road. The mine/mill area consisted of one 10:START-2\01020028\S759 6-50 ------- waste rock pile measuring 100 feet by 50 feet by 5 feet deep. North of the waste rock pile was a tailings pile measuring 1,000 feet by 2,100 feet by an estimated 20 feet deep. There could be potential overland flow from the tailings pile to a drainage ditch (PPE 1) located east of the tailings pile. The flow of the drainage ditch was estimated by the START-2 to be approximately 0.5 cfs. A mill building was located south of the waste rock pile and tailings pile measuring 250 feet by 225 feet. Northwest of the mill building an adit was located measuring 2 feet by 2 feet by unknown depth. The discharge was estimated by the START-2 at approximately 0.5 gallons per minute (gpm). The adit water flowed north into the forested area. Three residences were located south of the property. A fence was noted along a portion of the tailings pile; however, gaps were present in the northern fence line. A road with a no trespassing sign was noted which continued to the southern end of the tailings pile and mine/mill area where several houses were located. No fence was observed. No logging or grazing was noted in the vicinity of the property. 6.22.5 Sampling Locations Sample locations are depicted in Figure 6-30. Twelve waste rock samples (SZWP01SS through SZWP12SS) were collected from the waste rock pile. The samples were collected within the overland surface water drainage routes identified by the START -2. The samples were collected to determine potential contamination associated with this source. The samples appeared to consist of gray, fine, dry sand. No odor or staining was noted during sample collection. Twenty-one tailings samples (SZTP01SS through SZTP21SS) were collected from the tailings pile area. The samples were collected within the overland surface water drainage routes identified by the START-2. The samples were collected to determine potential contamination associated with this source. The samples appeared to consist of dark gray, fine, moist to dry soil with some clay. No odor or staining was noted during sample collection. One surface soil sample (SZMS01SS) was collected from the mill area. The sample was collected within the overland surface water drainage route identified by the START-2. The sample was collected to determine potential contamination associated with this source. The sample appeared to consist of black, fine, slightly moist sand with lumps. No odor was noted during sample collection. One surface water sample (SZAD01SW) was collected from the adit. The sample was collected within the overland surface water drainage route identified by the ST ART -2. The sample was collected to determine potential contamination associated with this source. The sample was clear. No odor or staining was noted during sample collection. 10:START-2\01020028\S759 6-51 ------- 6.22.6 Analytical Results 6.22.6.1 Surface Soil Sample Results The START-2 collected 34 surface soil samples for TAL metals analyses: twelve waste rock samples (SZWP01SS through SZWP12SS); twenty-one tailings samples (SZTP01SS through SZTP21SS); and one surface soil sample (SZMS01SS) from the mill area. In waste rock samples, significant concentrations of cadmium ranged from 27.2 mg/kgto 121 mg/kg. A significant concentration of copper was detected at 181 mg/kg. Significant concentrations of lead ranged from 871 mg/kgto 15,800 mg/kg. Significant concentrations of mercury ranged from 0.17 mg/kgto 1.6 mg/kg. Significant concentrations of zinc ranged from 3,820 mg/kgto 32,200 mg/kg. In tailings samples, significant concentrations of cadmium ranged from 23.4 mg/kgto 130 mg/kg. Significant concentrations of copper ranged from 180 mg/kgto 443 mg/kg. Significant concentrations of lead ranged from 917 mg/kg to 5,110 mg/kg. Significant concentrations of mercury ranged from 0.21 mg/kgto 2.7 mg/kg. Significant concentrations of zinc ranged from 3,560 mg/kgto 33,400 mg/kg. In the surface soil sample collected from the mill area, cadmium was detected at a significant concentration of 78.2 mg/kg, copper was detected at a significant concentration of 443 mg/kg, lead was detected at a significant concentration of 4,850 mg/kg, mercury was detected at a significant concentration of 0.97 mg/kg, and zinc was detected at a significant concentration of 17,500 mg/kg. Refer to Table 6-18 for complete data results. 6.22.6.2 Surface Water Sample Results Analytes detected in the surface water sample collected from the adit (SZAD01SW) include zinc at an estimated concentration of 292 /ig/L. 6.23 MAGMA MINE 6.23.1 Mine Location Latitude: Longitude: Legal Description: 48° 46' 00.48"N 117° 38' 25.08"W ElA SW% Section 28, Township 38N, Range 41E CERCLISID: WAN001002387 Stevens County: Contact: Colville National Forest 765 South Main Colville, Washington 99114 10:START-2\01020028\S759 6-52 ------- 6.23.2 Historical Information and Mine Description/Features The Magma Mine is a former copper, gold, lead, silver, and zinc mine located in the Northport district, Washington. Alternate names are Easy Money Mine and Eldorado Mine. The mine reportedly produced 5 tons of ore in 1927. The property was listed under the Magma Molybdenum Mines Company (1921-1943) and the Magma Mines & Metals Company (1930). Additional historical ownership information is unknown. The ore minerals are galena, molybdenite, pyrite, scheelite, and sphalerite. The property is developed by a 610-foot adit, a 110-foot shaft, and 1,800 feet of other workings. (Huntting 1956) 6.23.3 START-2 Mine Visit On June 28, 2001, the START-2 visited the Magma Mine and conducted a visual inspection of the property and surrounding area (Appendix B, Tearn 2 Phase 1, Page 28). The area consisted of a waste rock pile, a collapsed shaft, and the remnants of two sheds (Appendix A, Photos 32-8 through 32-11). The waste rock pile measured an estimated 50 feet by 30 feet with an average depth of 15 feet and the shaft opening measured approximately 5 feet by 5 feet. The ST ART-2 did not observe any overland drainage routes from the waste rock pile or shaft to surface water. Access to the mine is restricted with a locked gate. No residents or potential receptors were observed on the property. No samples were collected at the Magma Mine. 6.24 FARMER MINE 6.24.1 Mine Location Latitude: 48°50' 59.28"N Longitude: 117° 37' 17.40"W Legal Description: Section 34, Township 39N, Range 4IE CERCLISID: WAN001002373 County: Contact: Mick Vaagen and T rent Lang Vaagen Brothers Lumber 565 W 5th Colville, Washington 99114 Stevens 10:START-2\01020028\S759 6-53 ------- 6.24.2 Historical Information and Mine Description/Features The Farmer Mine is a former lead, silver, and zinc mine located at the south end of Deep Lake in Stevens County, Washington. Historical ownership information from the time of patent to the present is unknown. The mine consists of two claims known as King Tut No. 1 and No. 2. The mineralized zone is 2 to 20 feet wide in limestone and has been traced for 600 feet. The property is developed by a 135-foot adit, a smaller adit, 150 feet of shaft work, and an open pit. (Huntting 1956) 6.24.3 START-2 Mine Visit On June 19, 2001, the START -2 visited the Farmer Mine and conducted a visual inspection of the property and surrounding area (Appendix B, Tearn 1 Phase 1, Page 6). The area consisted of a shaft and an adit. The adit was not flowing at the time of the visit (Appendix A, Photos 14-21, 14-22). The START-2 did not observe any overland drainage routes from the shaft or adit to surface water. Access to the mine was unrestricted. No residents or potential receptors were observed on the property. No samples were collected at the Farmer Mine. 6.25 MAKI MINE 6.25.1 Mine Location Latitude: Longitude: Legal Description: CERCLISID: County: Contact: 48° 50' 45.60"N 117° 36' 00.00"W Section 35, Township 39N, Range 4IE WAN001002388 Stevens Mick Vaagen and T rent Lang Vaagen Brothers Lumber 565 W 5th Colville, Washington 99114 6.25.2 Historical Information and Mine Description/Features The Maki Mine is a former cobalt, lead, and zinc mine located at the south end of Deep Lake in Stevens County, Washington. Historical ownership information from the time of patent to the present is unknown. The property encompasses 160 acres of deeded land. The ore body is 50 to 100 feet thick and 600 feet long in gray limestone. The property is developed by 125 feet of workings in four shafts and a number of open cuts. (Huntting 1956) 10:START-2\01020028\S759 6-54 ------- 6.25.3 START-2 Mine Visit On June 19, 2001, the START -2 visited the Maki Mine and conducted a visual inspection of the property and surrounding area (Appendix B, T earn 1 Phase 1, Page 7). The area consisted of two waste rock piles and two shaft systems (Appendix A, Photo 14-24, 15-1 through 15-5). The volume of one waste rock pile was estimated to be 500 cubic yards, the other at 200 cubic yards. The adit was not flowing at the time of the visit. The START-2 did not observe any overland drainage routes from the waste rock piles or shafts to surface water. No residents or potential receptors were observed on the property. No samples were collected at the Maki Mine. 6.26 ELECTRIC POINT MINE/MILL 6.26.1 Mine/Mill Location Latitude: Longitude: Legal Description: CERCLISID: County: Contact: 48° 52' 56.28"N 117° 32'29.04"W Sections 17and 18; Township 39N; Range 42E WAN001002372 Stevens Mick Vaagen and T rent Lang Vaagen Brothers Lumber 565 W 5th Colville, Washington 99114 (509) 684-5071 6.26.2 Historical Information The Electric Point Mine/Mill is a former copper, lead, silver, and zinc mine/mill located 4 miles east of Leadpoint, Washington (Derkey et al. 1990; Battien 1998). The mine is reported to have produced from 1901 to 1955 (Derkey et al. 1990). Total production was 30,711,917 pounds of lead, 7,154 ounces of silver, and 10,691 pounds of zinc (Derkey et al. 1990). The State Mining Company owned the mine/mill as of 1975 (Battien 1998). Historical ownership information from 1975 to the present is unknown. 6.26.3 Mine/Mill Description/Features The Electric Point Mine/Mill is developed by 10,000 feet of drifts and crosscuts and several thousand feet of shafts (Huntting 1956). There are two shafts and eight 100-foot levels from which the ore columns or "chimneys" were reached. A tunnel on the 300-foot level extended to the surface on the 10:START-2\01020028\S759 6 - 55 ------- south side of the hill on which the mine is situated. Production of carbonate ore (30,438,010 tons) averaged about 25% lead, while the production of sulfide ore (21,569,146 tons) averaged 69% lead. The ore occurred in large chimneys of anglesite, cerussite, galena, and iron oxide and brecciated dolomite or magnesian limestone. (Jenkins 1924) 6.26.4 START-2 Mine/Mill Visit On June 22, 2001, the START -2 visited the Electric Point Mine/Mill and conducted a visual inspection of the property and surrounding area (Figure 6-31; Appendix A, Photos 19-14 through 20-17; Appendix B, Team 1 Phase 1, Pages 21 and 22). The mine/mill area consisted of two waste rock piles. Waste rock pile 1 measured 180 feet by 300 feet by 6 feet deep. Two collapsed shafts were located west and adjacent to waste rock pile 1. The shaft area measured 60 feet by 60 feet. East of waste rock pile 1 was a collapsed mill measuring 75 feet by 30 feet. Further east, waste rock pile 2 and an ore loading building were located. Waste rock pile 2 measured 75 feet by 120 feet by 6 feet deep. The ore loading building measured 20 feet by 10 feet by 10 feet. East of the entrance road a dry tailings pond was located measuring 90 feet by 75 feet by 3 feet deep. No PPEs were identified by the START-2. Access to the mine/mill is unrestricted. No logging or grazing was noted in the mine/mill area. 6.26.5 Sampling Locations Sample locations are depicted in Figure 6-32. Five waste rock samples (EPWP01SS through EPWP05SS) were collected at the mine/mill. EPWP01SS through EPWP03SS were collected from waste rock pile 1. The samples were collected within the overland surface water drainage routes identified by the START-2. The samples were collected to determine potential contamination associated with this source. The samples appeared to consist of fine/medium tan sand with gravel. No odor or staining was noted during sample collection. EPWP04SS and EPWP05SS were collected from waste rock pile 2. The samples were collected within the overland surface water drainage routes identified by the START-2. The samples were collected to determine potential contamination associated with this source. The samples appeared to consist of fine/medium tan sand with gravel. No odor or staining was noted during sample collection. Three tailings samples (EPTP01SS through EPTP03SS) were collected from the tailings pond. The samples were collected within the overland surface water drainage routes identified by the START-2. The samples were collected to determine potential contamination associated with this source. 10:START-2\01020028\S759 6-56 ------- The samples appeared to consist of brown/tan/orange fine sand with silt and some gravel. No odor was noted during sample collection. Three surface soil samples (EPMS01SS through EPMS03SS) were collected from the mill area. The samples were collected within the overland surface water drainage routes identified by the START-2. The samples were collected to determine potential contamination associated with this source. The samples appeared to consist of fine to medium brown-red sandy silt. No odor was noted during sample collection. 6.26.6 Analytical Results 6.26.6.1 Surface Soil Sample Results The START -2 collected 11 surface soil samples for TAL metals analyses: five waste rock samples (EPWP01SSthrough EPWP05SS); three tailings samples (EPTP01SSthrough EPTP03SS); and three surface soil samples (EPMS01SS through EPM03SS) from the mill area. In waste rock samples, significant concentrations of lead ranged from 4,490 mg/kgto 50,100 mg/kg. Significant concentrations of mercury ranged from 0.20 mg/kgto 0.45 mg/kg. Significant concentrations of zinc ranged from 13,300 mg/kgto 33,800 mg/kg. In tailings samples, a significant concentration of cadmium was detected at 25.0 mg/kg. Significant concentrations of lead ranged from 15,800 mg/kgto 26,000 mg/kg. Significant concentrations of mercury ranged from 0.14 mg/kgto 0.69 mg/kg. Significant concentrations of zinc ranged from 6,030 mg/kgto 22,000 mg/kg. In surface soil samples collected from the mill area, significant concentrations of lead ranged from 11,200 mg/kg to 97,800 mg/kg. Significant concentrations of mercury ranged from 0.16 mg/kg to 0.27 mg/kg. Significant concentrations of zinc ranged from 5,080 mg/kg to 10,600 mg/kg. Refer to Table 6-19 for complete data results. 6.27 GLADS TONE MINE/MILL 6.27.1 Mine/Mill Location Latitude: Longitude: Legal Description: 48° 53' 12.48"N County: CERCLISID: 117° 32' 35.16"W Section 18, Township 39N, Range 42E WAN001002376 Stevens 10:START-2\01020028\S759 6-57 ------- Contact: Mick Vaagen and Trent Lang Vaagen Brothers Lumber 565 W 5th Colville, Washington 99114 (509) 684-5071 6.27.2 Historical Information The Gladstone Mine/Mill is a former copper, lead, silver, and zinc mine/mill adjoining Electric Point Mine/Mill in Washington (Derkey et al. 1990; Battien 1998). The mine/mill is reported to have produced from 1901 to 1955 except for 1945 (Derkey et al. 1990). Total production was 15,583,187 pounds of lead; 9,602 ounces of silver; and 44,681 pounds of zinc (Derkey et al. 1990). The mine/mill was owned by Gladstone Mining Company who leased the property to other companies and/or private owners throughout the history of the mine/mill (Battien 1998). Historical ownership information from the time reported to the present is unknown. 6.27.3 Mine/Mill Description/Features The Gladstone Mine/Mill is located in the middle dolomite unit of the Metaline Formation. The ore deposit consists of chimney-type replacements at brecciated intersections of two or more sets of fissures. Most chimneys are 10 to 15 feet in diameter and 100 feet deep. Most of the circular to ellipsoidal chimneys do not extend more than 300 feet from the surface (Derkey et al. 1990). The mine/mill is developed by 4,000 feet of old workings and an 80-foot shaft (Huntting 1956). 6.27.4 START-2 Mine/Mill Visit On June 21, 2001, the START -2 visited the Gladstone Mine/Mill and conducted a visual inspection of the property and surrounding area (Figure 6-33; Appendix A, Photos 18-16 through 19-11; Appendix B, Tearn 1 Phase 1, Pages 16 through 19). The mine/mill area, which is accessed via a gravel entrance road, contained one waste rock pile measuring 18 feet by 30 feet by 3 feet deep. Shaft 1 located west of the waste rock pile measured 10 feet by 10 feet by unknown depth. Shaft 2 was located approximately 75 feet north of shaft land measured 10 feet by 10 feet by unknown depth. Collapsed shaft 3 was located approximately 20 feet east and 30 feet north of shaft 2 and measured 10 feet by 10 feet by unknown depth. Continuing north of shaft 3 for 20 feet shaft 4 was identified and measured 10 feet by 10 feet by unknown depth. West of the gravel entrance road and the shafts, the START -2 identified a tailings pile, a collapsed building potentially a mill, and an ore loading cart. The tailings pile 10:START-2\01020028\S759 6 - 58 ------- measured 60 feet by 60 feet by 6 feet deep and was located 30 feet west of the gravel road. The collapsed building measured 15 feet by 15 feet and was located near the southern portion of the tailings pile. The ore loading cart measured 10 feet by 10 feet by 20 feet and was located near the northern portion of the tailings pile. No PPEs were identified by the START -2. Access to the mine/mill is unrestricted. The START-2 noted evidence of past logging on the property. No grazing was noted in the mine/mill area. 6.27.5 Sampling Locations Sample locations are depicted in Figure 6-34. Three tailings samples (GLTP01SS through GLTP03SS) were collected from the tailings pile located in between two buildings. The samples were collected within the overland surface water drainage routes identified by the ST ART -2. The samples were collected to determine potential contamination associated with this source. The samples appeared to consist of fine orange-brown sand/silt. No odor was noted during the sample collection. Three surface soil samples (GLMS01SS through GLMS03SS) were collected from the potential mill area. The samples were collected within the overland surface water drainage routes identified by the START-2. The samples were collected to determine potential contamination associated with this source. The samples appeared to consist of medium brown-orange sand with trace gravel. No odor was noted during the sample collection. 6.27.6 Analytical Results 6.27.6.1 Surface Soil Sample Results The START -2 collected six surface soil samples for TAL metals analyses: three tailings samples (GLTP01SS through GLTP03SS) and three surface soil samples (GLMS01SS through GLMS03SS) from the potential mill area. In the tailings samples, significant concentrations of lead ranged from 27,100 mg/kg to 94,000 mg/kg. Significant concentrations of mercury ranged from 0.19 mg/kg to 0.30 mg/kg. Significant concentrations of zinc ranged from 6,560 mg/kg to 10,500 mg/kg. In surface soil samples collected from the potential mill area, significant concentrations of lead ranged from 20,300 mg/kg to 35,200 mg/kg. Significant concentrations of mercury ranged from 0.20 mg/kg to 0.25 mg/kg. Significant concentrations of zinc ranged from 6,020 mg/kg to 6,790 mg/kg. Refer to Table 6-20 for complete data results. 10:START-2\01020028\S759 6-59 ------- 6.28 LUCKY FOUR MINE 6.28.1 Mine Location Latitude: Longitude: Legal Description: 48° 52' 51.60"N County: Contact: CERCLISID: 117° 32' 33.00"W Section 18, Township 39N, Range 42E WANOO1002386 Stevens Colville National Forest 765 South Main Colville, Washington 99114 6.28.2 Historical Information and Mine Description/Features The Lucky Four Mine is a former copper, gold, lead, and silver mine situated at the north end of the Fifteen Mile Creek district, Washington. A vein, four and one-half feet in width, trends through the formations. The ore consists of chalcopyrite, pyrrhotite andpyrite, which yields copper, gold, and silver. It is estimated that 100 tons of ore have been mined and shipped from the Lucky Four Mine. For a distance of over 100 feet along the vein there has been trenching and open cut work. The property has been developed by two shafts, one to a depth of 27 feet, the other to a depth of 12 feet. (Weaver 1920) 6.28.3 START-2 Mine Visit On June 22, 2001, the START -2 visited the Lucky Four Mine and conducted a visual inspection of the property and surrounding area (Appendix B, Team 1 Phase 1, Page 20). The area consisted of a shaft with a crank or pulling system above it (Appendix A, Photo 19-12 and 19-13). No contaminant source was identified on the property. Access to the mine was unrestricted. No samples were collected at the Lucky Four Mine. 6.29 RED TOP MINE 6.29.1 Mine Location Latitude: Longitude: Legal Description: 48° 56' 35.88"N 117° 33' 52.20"W NE% SE% Section 25, Township 40N, Range 4IE CERCLISID: WANOO 1002394 Stevens County: 10:START-2\01020028\S759 6-60 ------- Contact: Mick Vaagen and Trent Lang Vaagen Brothers Lumber 565 W 5th Colville, Washington 99114 (509) 684-5071 6.29.2 Historical Information The Red Top Mine is a former lead, silver, and zinc mine located in the Northport mining district, Washington (Derkey et al. 1990). The mine is reported to have produced approximately 200 tons of ore prior to 1939 (Derkey et al. 1990). The mine also is reported to have produced in 1944 and 1953 (Derkey et al. 1990). From 1952 to 1954 the Pacific Northwest Mining Company was listed as the owner (Battien 1998). By 1962, the Red Top Company leased the mine to Rare Metals Corporation (Battien 1998). Historical ownership information from 1962 to the present is unknown. 6.29.3 Mine Description/Features The Red Top Mine consists of five patented and three unpatented claims (Huntting 1956). Mineralized shear zones are in marble and argillite and are crisscrossed by quartz veins. Some ore shoots are as much as 4 feet wide and 18 feet long. Four separate mineralized zones, as much as 1 foot wide, cut across bedding. The ore minerals in these transverse zones include galena, pyrite, scheelite, and tetrahedrite (Derkey et al. 1990). The mine is developed by a 2,700-foot adit and approximately 1,500 feet of drifts and raises (Huntting 1956). 6.29.4 START-2 Mine Visit On June 26, 2001, the START -2 visited the Red Top Mine and conducted a visual inspection of the property and surrounding area (Figure 6-35; Appendix A, Photos 14-11 through 14-20; Appendix B, Team 1 Phase 1, Pages 3 through 5). The mine area, which is accessed via an unimproved road, contained a waste rock pile measuring 200 feet by 150 feet by 10 feet deep. An adit, measuring 5 feet by 5 feet by unknown depth, is located north of the waste rock pile and unimproved road. Wooden debris, measuring 10 feet by 15 feet, was noted west of the waste rock pile and south of the unimproved road. A portal/shaft, measuring 10 feet by 5 feet, is located west of the adit. No discharge was observed from the adit or the portal/shaft. The START-2 did not observe an overland drainage route from the waste rock pile to a body of water. No PPEs were identified. Access to the mine was unrestricted. No logging or grazing was noted in the vicinity of the mine. 10:START-2\01020028\S759 6-61 ------- 6.29.5 Sample Locations Sample locations are depicted in Figure 6-36. Three waste rock samples (RDWP01SS through RDWP03SS) were collected from the waste rock pile located south of the portal/shaft. The samples were collected to determine potential contamination associated with this source. The samples appeared to consist of light brown fine sand with trace gravel. No odor or staining was noted during the sample collection. 6.29.6 Analytical Results 6.29.6.1 Surface Soil Sample Results The START -2 collected three surface soil samples from waste rock for TAL metals analyses. Significant concentrations of cadmium ranged from 111 mg/kg to 177 mg/kg. Significant concentrations of copper ranged from 225 mg/kg to 1,080 mg/kg. Significant concentrations of lead ranged from 14,600 mg/kg to 28,900 mg/kg. Significant concentrations of mercury ranged from 0.40 mg/kg to 1.1 mg/kg. Significant concentrations of zinc ranged from 10,700 mg/kg to 15,700 mg/kg. Refer to Table 6-21 for complete data results. 6.30 ANDERSON CALHOUN MINE/MILL 6.30.1 Mine/Mill Location Latitude: Longitude: Legal Description: CERCLISID: County: Contact: 48° 55' 09.84"N 117°35' 28.68"W NW% Section 2, Township 39N, Range 4IE WAN001002309 Stevens Lloyd Nickels Stevens County Public Utilities P.O. Box 390 Colville, Washington 99114 (509) 684-7500 6.30.2 Historical Information The Anderson Calhoun Mine/Mill is a former lead and zinc mine/mill located one mile north of Leadpoint, Washington (Derkey et al. 1990). The mine is reported to have produced between 1948 and 1952 (Derkey et al. 1990). The first claims were documented in 1937 (Battien 1998). Total production at the end of 1951 was approximately 100,000 tons (Derkey et al. 1990). 10:START-2\01020028\S759 6-62 ------- Andy Anderson discovered mineralization in 1910 and explored it with shallow pits and trenches (Mills 1977). During World War II, the United States Bureau of Mines drilled several holes as part of the Defense Minerals Program (Mills 1977). Goldfield Consolidated acquired the mine/mill, the date unknown, and mined by open-pit the area prospected by Anderson, drilled out a portion of the ore body adjacent to the pit, and initiated mechanized development (Mills 1977). American Zinc Lead and Smelting Company purchased the mine/mill from Goldfield Consolidated in 1964 and entered into production in 1966 (Battien 1998; Mills 1977). By 1965-1966, a 1,200 ton floatation mill for lead, silver, and zinc had been built (Battien 1998). In addition to the floatation mill, another mill, shops, and warehouses were constructed (Battien 1998). The mine/mill operated until 1968 (Derkey et al. 1990). The mine/mill closed because of depressed metal prices and diminishing ore reserves after extraction of nearly a million tons of ore (Mills 1977). Historical ownership information from 1968 to the present is unknown. 6.30.3 Mine/Mill Description/Features The Anderson Calhoun Mine/Mill is situated on the west side of Deep Creek approximately 1 mile north of Leadpoint. The mine/mill lies in the middle dolomite unit of the Metaline Formation. Ore minerals occur disseminated in limestone. The ore bodies range up to 80 feet wide, 80 feet high, and 650 feet long (Derkey et al. 1990). Production is from open pit mining. (Huntting 1956) 6.30.4 START-2 Mine/Mill Visit On September 11 and 13, 2001, the START-2 visited the Anderson Calhoun Mine/Mill and conducted a visual inspection of the property and surrounding area (Figure 6-37; Appendix A, Photos 35-1 through 38-10, 44-15 through 46-3, 46-11 through 46-12; Appendix B, Tearn 2 Phase 2, Pages 14 through 19, 22 and Tearn 1 Phase 2, Page 10). The mine/mill area consisted of a tailings pile measuring 555 feet by 500 feet by unknown depth. The tailings pile was located adjacent to the gated entrance road and on the western portion of the property. The ST ART -2 noted 4x4 vehicle and bicycle tracks on the tailings. A pond is located on the tailings pile and sporadic vegetation also was noted on the tailings. To the north of the tailings pile, an evaporation pond was noted measuring 105 feet by 50 feet. A pipe was protruding from the southern portion of the evaporation pond into the pond. No liner was present and the vegetation surrounding the evaporation pond was stressed. To the east of the tailings pile a waste rock pile was located underneath the waste rock conveyor belt measuring 120 feet by 80 feet by 20 feet deep. The waste rock conveyor belt was connected to the 10:START-2\01020028\S759 6-63 ------- mine building, the floatation building, and the waste rock storage bin. The mine building measured 25 feet in width by 15 feet in length by 20 feet in height. The conveyor belt attached to the floatation building measured 35 feet in length. The floatation building measured 25 feet in width by 15 feet in length by 10 feet in height. The waste rock storage bin measured 15 feet in width by 15 feet in length by 40 feet in height. The mill building was located north of the mine building and measured 50 feet in width by 75 feet in length by 40 feet in height. The mill building contained staged reagent and unknown drums, floatation tanks, and a crusher. Approximately 100 55-gallon steel drums were staged in the east corner of the mill building. Many of these unmarked drums were punctured with bullets with the contents spilling onto the concrete foundation. The unknown spilled contents were solidified. The concrete floor did not appear to be breached. Tailings were scattered throughout the mill building. A portal measuring 10 feet by 10 feet was located on the western portion of the mill building with a conveyor belt leading into the building. A first aid room of wood construction was located southwest of the mill building and adjacent to the conveyor belt extending from the portal/shaft. The first aid room measured 8 feet in width by 10 feet in length by 12 feet in height. The conveyor belt extending from the portal/shaft appeared to connect with the mine building at one point, measuring approximately 110 feet in length. Remnants of a storage shed and two concrete pads were located between the mine and mill buildings. The storage shed foundation measured 20 feet by 20 feet. Remnants of "Cebar Barite", a white cellulose-type material, was scattered throughout the storage shed foundation and surrounding area including the concrete pads. Five 55-gallon drums were scattered on the storage shed foundation. One concrete pad measuring 40 feet by 10 feet was located directly east of the dilapidated storage shed. Ten 55-gallon drums were staged on palettes. There was no legible documentation on the drums. The second concrete pad was located north of the first concrete pad and measured 10 feet by 20 feet. Scrap wood, steel, and garbage were scattered on both concrete pads. On the north side of the mill building, three areas of scattered drums intermixed with debris and equipment were documented. Stained soil with an oil odor were noted around the drums. Cattle prints were identified in the stained soil. There was a distinct sheen throughout the stained soil area surrounding the drums. Transformers were identified in 6 areas. A substation, heavily vandalized, also was documented. The first area was located east of the dilapidated storage shed and two concrete pads and included a power line with three transformers. The second area was located adjacent to the south side of the mill 10:START-2\01020028\S759 6-64 ------- building and consisted of three transformers staged on concrete pads. The concrete was not compromised. The third area was located west of the second area and consisted of a fallen power line with a transformer. The top of the transformer was detached and no staining was noted in the vicinity. The fourth area was located north of the fallen power line and consisted of a gated area containing a power line with transformer and 6 transformers staged on concrete. No staining was noted on the concrete or the surrounding soil. The fifth area was located west of the fourth area and consisted of three transformers staged on a concrete pad. No staining was noted on the concrete or the surrounding soil. The sixth area was located to the east of the fourth area and consisted of a power line with a transformer. The substation was located south of the sixth area and east of the third area and consisted of a partially gated area with remnant electrical equipment. On the southern portion of the property and east of the mine/mill entrance, a silo, concrete pad, and mine pit were located. The mine pit measured approximately 100 feet by 50 feet by unknown depth and was filled with water. A stream flowing south extended the entire length of the mine/mill and onto private farmland. A marshy wetland area was noted on the western portion of the stream and adjacent to the eastern side of the tailings pile and evaporation pond (PPE 1). Access to the mine/mill is restricted with a locked gate. Pastures are located adjacent to the mine/mill on the northern and southern portions. Numerous animal tracks were noted throughout the property, concentrated in the tailings pile and the stained soil areas. No logging was noted in the vicinity of the property. 6.30.5 Sampling Locations Sample locations are depicted in Figure 6-38. Six tailings samples were collected from the two tailings pile areas: three surface soil samples from the northern portion of the tailings pile (ANTP01SS through ANTP03SS) and three sediment samples from within the pond located on top of the tailings pile on the southern portion of the pile (ANTP04SD through ANTP06SD). The samples were collected within the overland surface water drainage routes identified by the START-2. The samples were collected to determine potential contamination associated with this source. ANTP01SS through ANTP03SS appeared to consist of gray silt. ANTP04SD through ANTP06SD appeared to consist of dark brown to black silt. No odor or staining was noted during sample collection. Four surface soil samples (ANSS01SS through ANSS04SS) were collected from areas of stained soil at the mine/mill. The samples appeared to consist of stained black soil with sand and gravel. An 10:START-2\01020028\S759 6-65 ------- oily odor and staining were noted during sample collection. ANSSO1SS and ANSS02SS were collected from the dilapidated storage shed area. ANSS03 SS and ANSS04SS were collected from the stained soil area located on the northern portion of the mill building. One surface water sample (ANADO1SW) was collected from the mine pit water located on the southern portion of the property. The sample was collected within the overland surface water drainage route identified by the ST ART-2. The sample was collected to determine potential contamination associated with this source. The sample was clear and blue-green in color. No odor or staining was noted during sample collection. A sediment sample (ANPP01SD) was collected at the confluence of the breach of the tailings pile to the wetlands on the unnamed stream (PPE 1). The sample appeared to consist of silt and sand. The sample was black and had an organic odor. 6.30.6 Analytical Results 6.30.6.1 Surface Soil Sample Results The START -2 collected 7 surface soil samples at the Anderson Calhoun Mine/Mill for TAL metals analyses: three from the tailings pile (ANTP01SS through ANTP03SS) and four from areas of stained soil (ANSSO 1SSthrough ANSS04SS). In the tailings samples, significant concentrations of copper ranged from 39.2 mg/kg to 55.0 mg/kg. Significant concentrations of mercury ranged from 0.12 mg/kg to 0.19 mg/kg. In surface soil samples collected from areas of stained soil, significant concentrations of cadmium ranged from 124 mg/kg to 129 mg/kg. Significant concentrations of copper ranged from 73.8 mg/kgto 115 mg/kg. Significant concentrations of lead ranged from 2,130 mg/kgto 2,190 mg/kg. Significant concentrations of mercury ranged from 0.18 mg/kgto 0.35 mg/kg. Significant concentrations of zinc ranged from 44,900 mg/kg to 49,000 mg/kg. Refer to Table 6-22 for complete data results. Four surface soil samples collected at the Anderson Calhoun Mine/Mill also were analyzed for pesticides//PCBs. No significant concentrations were detected. 6.30.6.2 Surface Water Sample Results The surface water sample collected from the mine pit water (ANADO 1 SW) contained lead at 192 ftg/L and zinc at 1,480 ^ig/L. 10:START-2\01020028\S759 6-66 ------- 6.30.6.3 Sediment Sample Results The START-2 collected 4 sediment samples at the Anderson Calhoun Mine/Mill for TAL metals analyses. The three sediment samples collected from the pond on top of the tailings pile (ANTP04SD, ANTP05SD, and ANTP06SD) contained significant concentrations of arsenic ranging from 4.3 mg/kg to 10.0 mg/kg, cadmium from 4.7 mg/kg to 7.5 mg/kg, copper from 30.7 mg/kg to 67.4 mg/kg, lead from 317 mg/kg to 320 mg/kg, mercury at a significant concentration of 0.17 mg/kg, and zinc at significant concentrations ranging from 723 mg/kg to 3,250 mg/kg for zinc. The sediment sample collected at PPE 1 (ANPP01SD) contained elevated concentrations of copper at 23.2 mg/kg and zinc at 343 mg/kg. Refer to Table 6-23 for complete data results. 6.31 LUC ILE MINE 6.31.1 Mine Location Latitude: Longitude: Legal Description: CERCLISID: County: Contact: 48° 57' 01.08"N 117° 33' 12.24"W Section 30, Township 40N, Range 42E WAN001002385 Stevens Colville National Forest 765 South Main Colville, Washington 99114 6.31.2 Historical Information and Mine Description/Features The Lucile Mine is a former cadmium, lead, silver, and zinc mine located on the eastern slope of the Red Top Mountain in the Northport mining district, Washington. Alternate names include Owen Mine and Boundary Silver Lead Mine. The mine was reported to have produced 50 tons of ore in 1926, 160 tons in 1948, and 44 tons in 1949 (Huntting 1956). The mine reportedly operated from 1910 to the late 1940s. The ore deposit consists of irregular mineralized zones in marble associated with quartz veins and lamprophyre dikes (Huntting 1956). Values are in cadmium, lead, silver, and zinc with zinc of high quality (Battien 1998). 6.31.3 START-2 Mine Visit On June 22, 2001, the START -2 visited the Lucile Mine and conducted a visual inspection of the property and surrounding area (Appendix B, Team 3 Phase 1, Pages 15 and 16). The mine was accessed 10:START-2\01020028\S759 6-67 ------- from Forest Service Road 915. The area consisted of a waste rock pile, a collapsed adit, and wood debris (Appendix A, Photos 12-1, 12-2 and 12-3). The adit was not flowing at the time of the visit. The waste rock pile measured approximately 500 feet tall by 75 feet by 5 feet deep and was located about 40 feet from the collapsed adit. The START-2 did not observe any overland drainage routes from the waste rock pile or adit to surface water. No residents or potential receptors were observed on the property. No samples were collected at the Lucile Mine. 6.32 IROQUOIS MINE 6.32.1 Mine Location Latitude: Longitude: Legal Description: CERCLISID: County: Contact: 48° 57' 06.12"N 117° 32' 22.92"W SW% Section 30, Township 40N, Range 42E WAN0010023 81 Stevens William Green Mines Management, Inc. 905 W. Riverside #311 Spokane, Washington 99201 (509) 838-6050 6.32.2 Historical Information The Iroquois Mine is a former cadmium, lead, silver, and zinc mine (Derkey et al. 1990). The mine is 8 miles southeast of Boundary and approximately 4 miles by road to Leadpoint, Washington (Battien 1998). The mine is reported to have produced in 1917, 1928, and 1950 (Derkey et al. 1990). Mines Management, Inc., of Spokane was owner of the mine and its 17 unpatented claims and 40 acres of deeded ground in the 1950s (Battien 1998). In 1964 the Bunker Hill Company took a lease on the mine (Battien 1998). Historical ownership from 1964 to the present is unknown. 6.32.3 Mine Description/Features The Iroquois Mine is situated about 8 miles southeast of Boundary, Washington. The property consists of three claims and 120 acres of incorporated land. It was formerly known as the Flannigan Mine (Weaver 1920). The property is developed by a main lower tunnel driven for a distance of 430 feet. About 290 feet in elevation above the lower tunnel there is an older, upper tunnel driven for 10:START-2\01020028\S759 6-68 ------- Ill feet. Approximately 175 feet south of the upper tunnel there is an old glory hole where considerable galena and lead carbonate ore have been mined. The formation in which the ores occur is a blue to grayish massive limestone, crushed and faulted and cut by numerous dikes, varying from 2 to 10 inches in width. In the lower tunnel sphalerite was observed in the limestone near the argillite contact. (Weaver 1920) 6.32.4 START-2 Mine Visit On June 22, 2001, the START -2 visited the Iroquois Mine and conducted a visual inspection of the property and surrounding area (Figure 6-39; Appendix A, Photos 12-5 through 12-17; Appendix B, Team 3 Phase 1, Pages 16 through 18). The mine area consisted of one waste rock pile measuring 170 feet by 40 feet by 4 feet deep located on the northern portion of the property and northwest of the unnamed road. South of the unnamed road, the START-2 identified an adit, three buildings, a pile of wood, and a piece of rail line. The adit measured 3 feet by 5 feet by unknown depth. Adit discharge flowed northwest in two directions. One path was south through a pipe under the road, around and past the waste rock pile where it pooled and infiltrated the ground. The second path was over the road into the waste rock pile. Building 1 measured 10 feet by 15 feet and was located west of the adit. Building 2 measured 20 feet by 50 feet and was located northeast of the adit. Building 3 measured 5 feet by 8 feet and was located 42 feet northeast of building 2. A pile of untreated timber was located between building 1 and the adit. A loose piece of rail line was located northwest of building 2. No PPEs were identified by the ST ART-2. Access to the mine is unrestricted. Logging occurs in the vicinity of the mine. No grazing was observed by the ST ART -2. 6.32.5 Sampling Locations Sample locations are depicted in Figure 6-40. Two waste rock samples (IRWP01SS and IRWP02SS) were collected from the waste rock pile. The samples were collected within the overland surface water drainage routes identified by the START -2. The samples were collected to determine potential contamination associated with this source. The samples appeared to consist of dark gray sandy gravel. No odor or staining was noted during sample collection. Two surface water samples (IRAD01SW and IRAD02SW) were collected from the adit located on the property. IRAD01SW was collected near the mouth of the adit. IRAD02SW was collected at the confluence of the adit discharge and the waste rock pile. The samples were collected within the overland surface water drainage routes identified by the START -2. The samples were collected to determine 10:START-2\01020028\S759 6-69 ------- potential contamination associated with this source. The samples appeared to be clear. No odor or staining was noted during sample collection. 6.32.6 Analytical Results 6.32.6.1 Surface Soil Sample Results The START -2 collected two surface soil samples from waste rock for TAL metals analyses. Significant concentrations of cadmium ranged from 33.2 mg/kgto 39.1 mg/kg. Significant concentrations of mercury ranged from 0.25 mg/kgto 0.49 mg/kg. Significant concentrations of zinc ranged from 10,000 mg/kgto 12,300 mg/kg. Refer to Table 6-24 for complete data results. 6.32.6.2 Surface Water Sample Results Analytes detected in surface water samples collected from adit water include zinc at an estimated concentration of 583 [xg/L. 6.33 SILVER Q UEEN MINE 6.33.1 Mine Location Latitude: Longitude: Legal Description: CERCLISID: County: Contact: 48° 32' 56.90"N 118° 06' 57.60"W NE% SW% Section 11, Township 35N, Range 37E WAN001002397 Stevens United States Department of the Interior Bureau of Land Management Spokane District Office 1103 N. Fancher Spokane, Washington 99212-1275 (509) 536-1200 6.33.2 Historical Information The Silver Queen Mine is a former lead, silver, and zinc mine located in the Deer Trail district, Washington. The mine is reported to have produced in 1917, 1928, 1937, 1938, and 1940 (Huntting 1956). Prior owners of the claim are reported to be Silver Basin Mining Company (1902-1924), Seal & Queen Consolidated Mining Company (1907), Commodore Mines Corporation (1928-1931), Silver Glance Mines Development Company (1929), Silver Seal Mining Company (1931), Queen & Seel 10:START-2\01020028\S759 6-70 ------- Mining Company (1935-1939), and J. G. Glasgow (1941) (Huntting 1956). Further ownership history from 1941 to the present is unknown. 6.33.3 Mine Description/Features The Silver Queen Mine is located on the opposite side of a sharp ridge on the Springdale road, at an elevation of 3,800 feet. The ore consists of white quartz, often iron stained, carrying as its chief value silver in the forms of argentite and chloride, together with subordinate amounts of galena, pyrite, and sphalerite. The ore occurs in shoots having a predominating pitch to the northeast. The country rock is a light colored crystalline dolomite limestone, in places brecciated and silicified. Within one-fourth mile both east and west of the property are exposures of intrusive granite. (Jenkins 1924) 6.33.4 START-2 Mine Visit On September 11, 2001, the START-2 visited the Silver Queen Mine and conducted a visual inspection of the property and surrounding area (Appendix B, Team 2 Phase 2, Pages 8 through 12). The property is situated on the side of a mountain with an upper slope, middle slope, and lower slope. The upper slope consisted of four shed-like buildings, an adit, and a power pole (Appendix A, Photos 44-1, 44-2, 44-3, and 44-12). Approximately 4 inches of ponded water was observed in the adit. The adit was not flowing at the time of the visit and sand bags were observed at the opening of the adit (Appendix A, Photos 44-4 and 44-11). The area in front of the adit was wet with shallow ponded water for approximately 10 feet. The middle slope consisted of a mill, a collapsed building, tailings, and a waste rock pile (Appendix A, Photos 44-5 through 44-8, 44-10 and 44-14). The mill building measured 15 feet by 15 feet by 25 feet. The tailings at the middle slope were observed to be very fine and silty. The lower slope consisted of finer tailings. The tailings measured 60 feet by 45 feet by unknown depth. At the bottom of the lower slope, the road slopes downward to a point where most run-off from the mine property would flow. At this location is a pump shed with four round concrete structures (Appendix A, Photo 44-13). The START-2 did not observe any overland drainage routes from the adit, tailings, or waste rock pile to surface water. Access to the mine was unrestricted. No residents or potential receptors were observed on the property. No samples were collected at the Silver Queen Mine. 10:START-2\01020028\S759 6-71 ------- 6.34 MELROSE MINE 6.34.1 Mine Location Latitude: Longitude: Legal Description: 48° 56' 44.52"N 117°38' 45.96"W CERCLISID: SW%NW% Section 28, Township 40N, Range 4IE WAN001002389 County: Contact: Mick Vaagen and T rent Lang Vaagen Brothers Lumber 565 W 5th Colville, Washington 99114 (509) 684-5071 Stevens 6.34.2 Historical Information The Melrose Mine is a former copper, lead, silver, and zinc mine located 4 miles south of Boundary, Washington (Derkey et al. 1990). The mine is reported to have produced between 1913 and 1938 (Derkey et al. 1990). The total yield from 97 tons of ore was 1,255 pounds of copper, 11,176 pounds of lead, and 2,973 ounces of silver (Derkey et al. 1990). Charleston Resources Ltd. took over the property in 1977 (Battien 1998). Historical ownership information from 1977 to the present is unknown. 6.34.3 Mine Description/Features The Melrose Mine ore deposit consists of a 6-foot vein in argillite containing irregular scattered bunches of ore. Ore minerals include galena, sphalerite, and tetrahedrite. The mine is developed by 1,600 feet of underground workings. (Huntting 1956) 6.34.4 START-2 Mine Visit On June 18, 2001, the START-2 visited the Melrose Mine and conducted a visual inspection of the property and surrounding area (Figure 6-41; Appendix A, Photos 14-1 through 14-7; Appendix B, Team 1 Phase 1, Pages 2 and 3). The mine area consisted of an adit 5 feet by 10 feet by unknown depth. Moss and algae growth were noted near the mouth of the adit. The adit discharge flowed approximately 40 feet east to an unnamed tributary (PPE 1) that feeds into Tom Bush Creek. The ST ART-2 estimated the flow of the unnamed tributary at 1 gpm. There were no waste rock piles; however, the entry road appeared to be constructed out of waste rock. A building approximately 10 feet by 10 feet by 10 feet was 10:START-2\01020028\S759 6-72 ------- located to the north of the adit and contained test core samples. Access to the mine was unrestricted and the START-2 noted garbage left by visitors. No logging or grazing was noted in the vicinity of the mine. 6.34.5 Sample Locations Sample locations are depicted in Figure 6-42. One surface water sample was collected from the discharge of water originating at the adit (MLAD01SW). The sample was collected within the overland surface water drainage route identified by the START-2. The sample was collected to determine potential contamination associated with this source. The sample was clear. No odor or staining was noted during sample collection. One sediment sample was collected at the confluence of the adit water drainage to the unnamed tributary (PPE 1; MLPP01SD). The sample appeared to consist of brown sand with trave gravel and organics. No odor or staining was noted during sample collection. 6.34.6 Analytical Results 6.34.6.1 Surface Water Sample Results Analytes detected in water collected at the adit include zinc at an estimated concentration of 433 /ig/L. 6.34.6.2 Sediment Sample Results The START-2 collected one sediment sample from the PPE for TAL metals analyses. Cadmium was detected at an elevated concentration of 22.8 mg/kg and zinc was detected at an elevated concentration of 1,650 mg/kg. Refer to Table 6-25 for complete data results. 6.35 LAKEVIEW MINE 6.35.1 Mine Location Latitude: Longitude: Legal Description: CERCLISID: County: Contact: 48° 57' 51.84"W 117° 32' 57.12"N Near center Section 19, Township 40N, Range 42E WAN001002383 Stevens Colville National Forest 765 South Main Colville, Washington 99114 10:START-2\01020028\S759 6-73 ------- 6.35.2 Historical Information and Mine Description/Features The Lakeview Mine is a former lead and silver mine located in the Northport mining district on the north side of Red Top Mountain, Washington. An alternate name is Hazel Mine. The property reportedly consists of six claims. The ore deposit consists of quartz containing a little galena and some silver sulphides. Tiny crystals of pyromorphite were also found in the oxidized portion of the ores. The ore value consists largely of silver (Jenkins 1924). 6.35.3 START-2 Mine Visit On June 19, 2001, the START-2 visited the Lakeview Mine and conducted a visual inspection of the property and surrounding area (Appendix B, Tearn 3 Phase 1, Pages 9 and 10). The area was heavily forested with no signs or visible remnants of mining activity (Appendix A, Photo 10-15). Approximately a quarter mile north of the mine location an area was observed to be heavily logged and clear cut. The START-2 did not observe any contaminant source at the property. Access to the mine was unrestricted. No samples were collected at the Lakeview Mine. 6.36 JACKSON MINE 6.36.1 Mine Location Latitude: Longitude: Legal Description: CERCLISID: County: Contact: 48° 57' 35.64"N 117° 34' 08.04"W SW%NW% Section 24, Township 40N, Range 4IE WAN0010023 82 Stevens Ron Matney 145 Highway 20 East Colville, Washington 99114 6.36.2 Historical Information and Mine Description/Features The Jackson Mine is a former copper, lead, silver, and zinc mine located in the Northport mining district, Washington. The mine reportedly yielded 7 tons of ore (Derkey et al. 1990). The ore deposit is described as a mineralized quartz vein in argillite 4 to 6 feet in width (Huntting 1956). 10:START-2\01020028\S759 6-74 ------- 6.36.3 START-2 Mine Visit On June 25, 2001, the START -2 visited the Jackson Mine and conducted a visual inspection of the property and surrounding area (Appendix B, Tearn 3 Phase 1, Pages 24 and 25). The START-2 was accompanied by Ron Matney, the property owner. The area consisted of an adit and a cabin (Appendix A, Photos 13-1, 13-2, and 13-3). The adit was not flowing at the time of the visit. The area surrounding the mine was partially logged. The START-2 did not observe any overland drainage route from the adit to surface water. Access to the mine was unrestricted. No residents or potential receptors were observed on the property. No samples were collected at the Jackson Mine. 6.37 FRISCO-STANDARD MINE 6.37.1 Mine Location Latitude: Longitude: Legal Description: CERCLISID: County: Contact: 48° 59' 34.80"W 117° 26' 39.48"N SViNWW Section 12, Township 40N, Range 42E WAN001002375 Stevens Charles Shaw 8 B Eagles Nest Drive LaConnor, Washington 98257 6.37.2 Historical Information The Frisco-Standard Mine is a former copper, lead, and silver mine located in the Northport mining district, Washington (Huntting 1956). The property consists of seven patented claims (Jenkins 1924). Several buildings, including a cookhouse, cabin, and a mill, were to be listed as holdings of Frisco-Standard (Battien 1998). In 1943, the mine was operated by the Northport Mining and Development Company, Inc. A 1965 report states that intermittent exploration had been carried out by several different lessees, with most values in lead, silver, and copper (Battien 1998). The property is currently owned by Charles Shaw (Appendix B, Team 3 Phase 1, Page 8). 6.37.3 Mine Description/Features The Frisco-Standard Mine is located on Jubilee Creek, just south of the U.S.-Canada border (Derkey et al. 1990). The formation exposed is termed the Fish Creek argillite, and is of probable Palaeozoic age. A grayish calcareous argillite and a black carbonaceous argillite are the predominating 10:START-2\01020028\S759 6-75 ------- varieties of rock exposed (Weaver 1920). The ore deposit consists of quartz veins or lenses up to 7 feet wide in sheared graphitic schist (Huntting 1956). 6.37.4 START-2 Mine Visit On June 19, 2001, the START -2 visited the Frisco-Standard Mine and conducted a visual inspection of the property and surrounding area (Appendix B, Team 3 Phase 1, Pages 8 and 10). The START-2 observed a waste rock pile, two adits, and one possible exploratory adit (Appendix A, Photos 10-3 through 10-7). None of the adits were flowing at the time of the visit. The waste rock pile measured approximately 3 feet deep by 25 feet wide by 63 feet in height. The START-2 did not observe any overland drainage routes from the waste rock pile to surface water. Access to the mine was unrestricted. No residents or potential receptors were observed on the property. No samples were collected at the Frisco-Standard Mine. 6.38 MYEERAH MINE 6.38.1 Mine Location Latitude: Longitude: Legal Description: CERCLISID: County: Contact: 48° 59' 26.16"N 117° 27' 14.76"W E center Section 11, Township 40N, Range 42E WAN001002390 Stevens Colville National Forest 765 South Main Colville, Washington 99114 6.38.2 Historical Information and Mine Description/Features The Myeerah Mine is a former gold, lead, silver, and zinc mine located in the Northport mining district, Washington. The mine is reported to have produced in 1926 and 1942. Yield from 21 tons of ore was 8,175 pounds lead and 288 ounces silver (Derkey et al. 1990). The ore deposit is a 2-foot wide vein consisting of quartz, sheared slate, and numerous lamprophyre dikes. The vein is reported to be traceable for about 1,000 feet. The mine is developed by adits and numerous open cuts. (Huntting 1956) 10:START-2\01020028\S759 6-76 ------- 6.38.3 START-2 Mine Visit On June 19, 2001, the START -2 visited the Myeerah Mine and conducted a visual inspection of the property and surrounding area (Appendix B, Team 3 Phase 1, Pages 8 through 10). The mine area consisted of a dilapidated metal shed with a collapsed adit inside, and two waste rock piles (Appendix A, Photos 10-8 through 10-12). The collapsed adit was not flowing at the time of the visit. One waste rock pile located north and across the road from the dilapidated shed measured 2 feet deep by 20 feet wide by 20 feet in height. The second waste rock pile measuring 10 feet by 10 feet by 2 feet deep was located west of the dilapidated shed (Appendix A, Photo 10-12). Signs posted on the shed included "Danger Forest Service abandoned mine hazard: sign P61-23"; "Keep out Pure Luck Mining Claim"; and "Work-current, August 1992, August 1996, August 1997". The START-2 did not observe any overland drainage routes from the adit or waste rock piles to surface water. Access to the shed and adit was restricted by a locked metal door. No residents or potential receptors were observed on the property. No samples were collected at the Myeerah Mine. 6.39 UNITED TREASURE MINE 6.39.1 Mine Location 6.39.2 Historical Information The United Treasure Mine is a former copper, gold, lead, silver, and zinc mine located in the Northport mining district, Washington (Weaver 1920). The mine was reported to have produced 62 tons of ore in 1917, 2 tons in 1933, and some production in 1953 (Huntting 1956). Considerable high-grade ore, more or less oxidized, was mined and shipped and packed out by horses to the railroad at Boundary, Washington (Weaver 1920). Still making shipments in 1933, and up to 1953, the United Treasure Mine was owned by Singlejack Silver Mining Exploration Company (Battien 1998). Additional historical ownership information is unknown. Latitude: Longitude: Legal Description: County: Contact: CERCLISID: 48° 59' 21.48"N 117° 27' 51.12"W Near center Section 11, Township 40N, Range 42E WAN001002399 Stevens Colville National Forest 765 South Main Colville, Washington 99114 10:START-2\01020028\S759 6-77 ------- 6.39.3 Mine Description/Features The United Treasure Mine is situated on the east side of Fish Creek (Huntting 1956). The formation exposed is a very dark-colored silicified carbonaceous argillite which has been greatly broken by fractures and cross fractures. The vein is composed of a quartz gangue containing copper, lead, and zinc minerals carrying silver. The mineralized zone varies in thickness from a few inches to 30 inches (Weaver 1920). 6.39.4 START-2 Mine Visit On June 20, 2001, the START -2 visited the United Treasure Mine and conducted a visual inspection of the property and surrounding area (Appendix B, Team 3 Phase 1, Pages 12 and 13). The mine area consisted of three adits and a waste rock pile (Appendix A, Photos 10-23 and 10-24). The adits were not flowing at the time of the visit. The adit openings measured 8 feet by 6 feet, 7 feet by 4 feet, and 5 feet by 2 feet, respectively. The waste rock pile measured approximately 2 feet long by 5 feet wide by 1 foot deep. The START-2 did not observe any overland drainage routes from the adits or waste rock pile to surface water. Access to the mine was unrestricted. No residents or potential receptors were observed on the property. No samples were collected at the United Treasure Mine. 10:START-2\01020028\S759 6-78 ------- Table 6-1 DAISY MINE SURFACE SOIL SAMPLES ANALYTICAL RESULTS SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID 01374163 01374164 01374165 01374166 CLP Inorganic ID MJ0KH2 MJ0KH3 MJ0KH4 MJ0KH5 CLP Organic ID NU NU NU NU E&E Sample ID NU NU NU NU Station Location DTBK01SS DTTP01SS DTTP02SS DTTP03SS Sample Depth (inches) 0-6 0-6 0-6 0-6 Description Background Tailings Pile TAL Metals (mg/kg) Aluminum 18100 3370 8130 4700 Arsenic 68.2 64.3 233 20.4 Barium 168 70.4 34.6 JB 73.5 Beryllium 0.89 JB (1.06 SQL) JJ. 12. 0.30 JB Cadmium 4.8 7.8 9.7 0.52 JB Calcium 5420 245000 38400 7950 Chromium 13.9 6.4 19.1 12.0 Cobalt 14.7 9.4 JB 12.5 4.3 JB Copper 55.2 137 121 19.6 Iron 25200 23900 30500 12500 Lead 183 70.9 69.3 12.1 Magnesium 4110 6040 7710 2840 Manganese 1070 360 655 236 Mercury 0.06 JB (0.11 SQL) 0.42 2S 0.05 U Nickel 16.1 23.5 67.0 20.2 Potassium 1300 JK 1230 JK 1820 JK 1180 JK Selenium 1.5 JL 3.0 JL 5.9 JL 0.68 UJL Silver 6.7 2.3 4.6 0.94 JB Vanadium 41.9 16.3 87.5 35.3 Zinc 462 649 990 76.1 Note: Bold type indicates sample concentration is above the detection limit. Underlined type indicates the sample results is significant as defined in Section 5. Key: B = The reported concentration is between the instrument detection limit and the contract required detection limit. BK = Background. CLP = Contract Laboratory Program. DT = Daisy Mine. E & E = Ecology and Environment, Inc. EPA = United States Environmental Protection Agency. ID = Identification. J = The analyte was positively identified. The associated numerical value is an estimate. K = Unknown bias. L = Low bias. mg/kg = Milligrams per kilogram. NU = Not utilized. SQL = Sample quantitation limit. SS = Surface soil. TAL = Target Analyte List. TP = Tailings pile. U = The analyte was not detected. The associated numerical value is the contract required detection limit. 6-79 ------- Table 6-2 DAISY MINE SEDIMENT SAMPLES ANALYTICAL RESULTS SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID 01374161 CLP Inorganic ID MJ0KH0 CLP Organic ID J0KH0 E & E Sample ID 01090426 Station Location DTPP01SD Sample Depth (inches) 0-6 Description Background PPE 1 TAL Metals (mg/kg) Aluminum 20200 11100 Arsenic 13.0 17.8 Barium 450 181 Cadmium 3.4 0.35 JB Calcium 109000 5490 Chromium 32.3 14.0 Cobalt 11.9 5.7 IB Copper 69.3 21.6 Iron 27900 14700 Lead 124 17.0 Magnesium 33500 3220 Manganese 673 352 Nickel 31.9 20.9 Potassium 3920 JK 2550 JK Vanadium 47.4 42.5 Zinc 239 105 Pesticide/PCBs (|ig/kg) Endrin Ketone 4.0 3.4 U Note: Bold type indicates sample concentration is above the detection limit. Key: B = The reported concentration is between the instrument detection limit and the contract required detection limit. CLP = Contract Laboratory Program. DT = Daisy Mine. E & E = Ecology and Environment, Inc. EPA = United States Environmental Protection Agency. ID = Identification. J = The analyte was positively identified. The associated numerical value is an estimate. K = Unknown bias. mg/kg = Milligrams per kilogram. jug/kg = Micrograms per kilogram. PCBs = Polychlorinated biphenyls. PPE = Probable point of entry. SD = Sediment. TAL = Target Analyte List. U = The analyte was not detected. The associated numerical value is the contract required detection limit. 6-80 ------- Table 6-3 L-BAR/NORTHWEST MAGNESITE SEDIMENT SAMPLES ANALYTICAL RESULTS SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID 01374104 01374103 01374102 CLP Inorganic ID MJ0KC4 MJ0KC3 MJ0KC2 CLP Organic ID J0KC4 J0KC3 J0CK2 E & E Sample ID 01090404 01090403 01090402 Station Location LBBK01SD LBDT03SD LBDT02SD Sample Depth (inches) 0-8 0-8 0-8 Description Background PPE 1 PPE 2 TAL Metals (mg/kg) Aluminum 20200 16600 JK 19100 JK Arsenic 12.1 7.0 JB 11.2 JB Barium 450 164 JB 195 JB Cadmium 3.4 0.71 UJK 1.3 JB Calcium 39600 6330 JK 16000 JK Chromium 32.3 21.4 JK 28.1 JK Cobalt 11.9 7.6 JB 9.7 JB Copper 69.3 45.3 JK 62.1 JK Iron 27900 19600 JK 23600 JK Lead 124 43.1 JK 49.4 JK Magnesium 33500 22900 JK 38400 JK Manganese 673 310 JK 784 JK Mercury 0.10 IB (0.10 SQL) R R Nickel 31.9 21.9 JB 26.3 JB Potassium 3920 JK 27900 JK 31600 JK Selenium 0.7 UJK 18.0 JK 15.9 JK Vanadium 47.4 29.4 JB 32.3 JB Zinc 239 140 218 JK Note: Bold type indicates sample concentration is above the detection limit. Underlined type indicates the sample results is significant as defined in Section 5. Key: B = The reported concentration is between the instrument detection limit and the contract required detection lii BK = Background. CLP = Contract Laboratory Program. DT = Ditch. E & E = Ecology and Environment, Inc. EPA = United States Environmental Protection Agency. ID = Identification. J = The analyte was positively identified. The associated numerical value is an estimate. K = Unknown bias. LB = L-Bar/Northwest Magnesite. mg/kg = Milligrams per kilogram. R = The data are unusable for all purposes. SD = Sediment. SQL = Sample quantitation limit. TAL = Target Analyte List. U = The analyte was not detected. The associated numerical value is the contract required detection limit. 6-81 ------- Table 6-4 NORTHWEST ALLOYS SEDIMENT SAMPLES ANALYTICAL RESULTS SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID 01374108 01374107 CLP Inorganic ID MJ0KC8 MJ0KC7 CLP Organic ID J0KC8 J0KC7 E & E Sample ID 01090408 01090407 Station Location NABK01SD NADT01SD Sample Depth (inches) 0-8 0-8 Description Background Ditch near PPE 1 TAL Metals (mg/kg) Aluminum 2080 8420 Arsenic 1.1 UJK 4.9 Barium 34.0 JB 170 (48.8 SQL) Calcium 2730 26100 Chromium 5.4 10.8 Copper 2.8 IB 18.7 (6.1 SQL) Iron 5590 11300 Lead 2.0 7.5 Magnesium 1430 4000 Manganese 91.7 311 Nickel 3.6 IB 10.9 (9.8 SQL) Potassium 605 JB 1540 JK Vanadium 8.9 JB 16.3 (12.2 SQL) Zinc 10.8 47.9 Note: Bold type indicates sample concentration is above the detection limit. Key: B = The reported concentration is between the instrument detection limit and the contract required detection limit. BK = Background. CLP = Contract Laboratory Program. DT = Ditch. E & E = Ecology and Environment, Inc. EPA = United States Environmental Protection Agency. ID = Identification. J = The analyte was positively identified. The associated numerical value is an estimate. K = Unknown bias. mg/kg = Milligrams per kilogram. NA = Northwest Alloys. SD = Sediment. SQL = Sample quantitation limit. TAL = Target Analyte List. U = The analyte was not detected. The associated numerical value is the contract required detection limit. 6-82 ------- Table 6-5 NAPOLEON MINE/MILL SEDIMENT SAMPLES ANALYTICAL RESULTS SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID 01374114 01374113 CLP Inorganic ID MJ0KD5 MJ0KD4 CLP Organic ID J0KD4 J0KD3 E & E Sample ID 01090413 01090412 Station Location NPBK01SD NPPP01SD Sample Depth (inches) 0-8 0-8 Description Background PPE 1 TAL Metals (mg/kg) Aluminum 6980 8790 Arsenic 13.0 26.8 Barium 83.2 96.1 Calcium 56700 6340 Chromium 22.0 17.3 Copper 47.6 207 Iron 20300 36000 Lead 13.1 25.5 Magnesium 4660 3490 Manganese 293 190 Nickel 18.9 25.1 Potassium 899 JB 1430 JK Silver 1.1 JB (2.1 SQL) 23 Vanadium 25.8 31.0 Zinc 62.2 77.6 Note: Bold type indicates sample concentration is above the detection limit. Underlined type indicates the sample results is significant as defined in Section 5. Key: B = The reported concentration is between the instrument detection limit and the contract required detection limit. BK = Background. CLP = Contract Laboratory Program. E & E = Ecology and Environment, Inc. EPA = United States Environmental Protection Agency. ID = Identification. J = The analyte was positively identified. The associated numerical value is an estimate. K = Unknown bias. mg/kg = Milligrams per kilogram. NP = Napoleon Mine/Mill. PPE = Probable point of entry. SD = Sediment. SQL = Sample quantitation limit. TAL = Target Analyte List. 6-83 ------- Table 6-6 VAN STONE MINE/MILL SURFACE SOIL SAMPLES ANALYTICAL RESULTS SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID 01254196 01254197 01254198 01254199 01254200 01254201 01254202 01254203 01254204 CLP Inorganic ID MJ0GJ5 MJ0GJ6 MJ0GJ7 MJ0GJ8 MJ0GJ9 MJ0GK0 MJ0GK1 MJ0GK2 MJ0GK3 CLP Organic ID NU NU NU NU NU NU NU NU NU E & E Sample ID NU NU NU NU NU NU NU NU NU Station Location VSWP01SS VSWP02SS VSWP03SS VSWP04SS VSWP05SS VSWP06SS VSWP07SS VSWP08SS VSWP09SS Sample Depth (Inches) 0-6 0-6 0-6 0-6 0-6 0-6 0-6 0-6 0-6 Description Background Waste Rock Pile TAL Metals (mg/kg) Aluminum 18100 5640 3670 1600 2900 1230 1150 406 1150 2970 Antimony 1.5 JB (15.1 SQL) 2.0 JB 0.61 UJK 1.1 JB 2.1 JB 2.2 JB 3.0 JB 14.5 1.3 JB 1.3 JB Arsenic 68.2 42.3 5.4 17.5 43.8 3.7 U 14.9 5.9 12.7 11.6 Barium 548 47.6 31.4 JB 17.5 JB 50.0 113 21.3 JB 62.0 16.4 JB 24.2 JB Beryllium 0.48 JB (6.3 SQL) 0.98 JB 0.25 JB 0.40 JB 0.27 JB 0.15 JB 0.08 JB 0.07 JB 0.15 JB 0.51 JB Cadmium 7.8 41.4 15.4 10.5 38.8 69.7 124 234 33.7 27.9 Calcium 118000 90300 44800 146000 55300 125000 85000 127000 144000 114000 Chromium 29.0 7.1 2.4 1.7 JB 1.7 JB 1.0 JB 0.87 JB 0.46 JB 1.1 JB 2.1 JB Cobalt 8.6 JB (63 SQL) 2.3 JB 1.5 JB 0.54 JB 1.2 JB 0.52 JB 1.5 JB 0.25 JB 0.28 JB 1.4 JB Copper 55.2 12.5 4.9 JB 7.3 6.2 JL 1.9 JB 7.8 JL 2.5 JB 5.4 JL 4.3 JB Iron 25200 22600 JK 8710 JK 10800 JK 17100 7450 15300 12000 13600 7180 Lead 183 1830 286 204 2080 12100 6090 76500 359 47.4 Magnesium 17900 68200 33500 102000 34100 74200 46200 68400 107000 76100 Manganese 1370 822 236 407 278 207 202 227 302 472 Mercury 0.06 JB (0.11 SQL) 1.3 JL 0.08 JB 0.32 JL L5 0.38 0.84 0.29 0.26 0.05 U Nickel 58.4 13.7 4.5 JB 3.8 JB 3.8 JB 2.3 JB 3.8 JB 2.1 JB 5.6 JB 7.1 JB Potassium 11660 942 JB 806 JB 278 JB 1240 477 JB 270 JB 162 JB 198 JB 537 JB Selenium 1.5 JL 0.71 U 0.69 U 0.79 JB 0.70 U 0.70 U 0.71 U 0.69 U 0.69 U 0.71 U Silver 6.7 0.94 JB 0.44 JB 0.53 JB 0.83 JB 0.88 JB 1.9 JB 4.4 0.5 JB 0.17 U Sodium 3308 JB 377 JB 314 JB 202 JB 153 JB 332 JB 690 JB 1190 124 JB 111 JB Thallium 1.4 U 0.81 U 0.79 U 0.79 U 0.81 U 0.80 U 0.82 U 0.79 U 0.79 U 1.1 JB Vanadium 51.2 21.1 12.2 6.9 JB 11.1 5.0 JB 4.0 JB 2.3 JB 7.8 JB 7.0 JB Zinc 835 20600 JK 15000 JK 5920 JK 10800 19500 45800 68000 5960 3660 Page 1 of 9 6-84 ------- Table 6-6 VAN STONE MINE/MILL SURFACE SOIL SAMPLES ANALYTICAL RESULTS SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID 01254196 01254197 01254198 01254199 01254200 01254201 01254202 01254203 01254204 CLP Inorganic ID MJ0GJ5 MJ0GJ6 MJ0GJ7 MJ0GJ8 MJ0GJ9 MJ0GK0 MJ0GK1 MJ0GK2 MJ0GK3 CLP Organic ID NU NU NU NU NU NU NU NU NU E & E Sample ID NU NU NU NU NU NU NU NU NU Station Location VSWP01SS VSWP02SS VSWP03SS VSWP04SS VSWP05SS VSWP06SS VSWP07SS VSWP08SS VSWP09SS Sample Depth 0-6 0-6 0-6 0-6 0-6 0-6 0-6 0-6 0-6 Description Background Waste Rock Pile SV OCs (ng/kg) 9H-Carbazole NU NU NU NU NU NU NU NU NU NU 9H-Fluorene NU NU NU NU NU NU NU NU NU NU Acenaphthene NU NU NU NU NU NU NU NU NU NU Acenaphthylene NU NU NU NU NU NU NU NU NU NU Anthracene NU NU NU NU NU NU NU NU NU NU Benzo(a)anthracene NU NU NU NU NU NU NU NU NU NU Benzo(a)pyrene NU NU NU NU NU NU NU NU NU NU Benzo(g,h,i)perylene NU NU NU NU NU NU NU NU NU NU Benzo [b] Fluoranthene NU NU NU NU NU NU NU NU NU NU Benzo [k] fluoranthene NU NU NU NU NU NU NU NU NU NU Chrysene NU NU NU NU NU NU NU NU NU NU Dibenzo[a,h]anthracene NU NU NU NU NU NU NU NU NU NU Dibenzofuran NU NU NU NU NU NU NU NU NU NU Di-n-octylphthalate NU NU NU NU NU NU NU NU NU NU Indeno( 1,2,3-cd)pyrene NU NU NU NU NU NU NU NU NU NU Isophorone NU NU NU NU NU NU NU NU NU NU Naphthalene NU NU NU NU NU NU NU NU NU NU Naphthalene, 2-methyl- NU NU NU NU NU NU NU NU NU NU Phenanthrene NU NU NU NU NU NU NU NU NU NU Pyrene NU NU NU NU NU NU NU NU NU NU 6-85 Page 2 of 9 ------- Table 6-6 VAN STONE MINE/MILL SURFACE SOIL SAMPLES ANALYTICAL RESULTS SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID 01254205 01254206 01254207 01254312 01254315 01254316 01254317 01254318 01254319 CLP Inorganic ID MJ0GK4 MJ0GK5 MJ0GK6 MJ0EW6 MJ0EW9 MJ0EX0 MJ0EX1 MJ0EX8 MJ0EX3 CLP Organic ID NU NU NU NU NU NU NU NU NU E & E Sample ID NU NU NU NU NU NU NU NU NU Station Location VSWP10SS VSWP11SS VSWP12SS VSTP21SS VSTP01SS VSTP02SS VSTP03SS VSTP04SS VSTP05SS Sample Depth (Inches) 0-6 0-6 0-6 0-6 0-6 0-6 0-6 0-6 0-4 Description Background Waste Rock Pile Tailings Pile TAL Metals (mg/kg) Aluminum 18100 3610 12100 796 148 3580 11100 8370 755 12000 Antimony 1.5 JB (15.1 SQL) 0.91 JB 0.64 U 1.4 JB 1.2 UJK 1.1 UJK 1.1 UJK 0.88 UJK 0.74 JB 1.4 UJK Arsenic 68.2 5.2 4.3 U 10.8 4.2 U 15.1 6.8 5.7 U 8.4 6.3 U Barium 548 97.4 130 26.4 JB 73.1 71.0 158 127 27.7 JB 241 Beryllium 0.48 JB (6.3 SQL) 0.33 JB 1.6 0.07 JB 0.04 U 0.12 JB 0.46 JB 0.35 JB 0.04 U 0.39 JB Cadmium 7.8 10.1 5.5 15.0 8.6 7.3 1.9 2.4 7.6 3.2 Calcium 118000 45800 7580 155000 134000 72800 16000 10100 81400 24200 Chromium 29.0 3.6 1.3 JB 0.86 JB 8.7 3.0 12.9 10.1 1.8 JB 6.8 Cobalt 8.6 JB (63 SQL) 2.0 JB 3.9 JB 0.22 U 0.24 U 1.0 JB 5.0 JB 5.4 JB 0.31 JB 2.9 JB Copper 55.2 4.8 JB 8.5 JL 5.7 76.2 JL 27.4 JL 26.9 JL 23.1 JL 23.4 JL 22.6 JL Iron 25200 8720 14300 34000 JK 4950 8940 16300 12700 7340 11200 Lead 183 1610 7.4 1520 4710 283 81.7 74.3 257 119 Magnesium 17900 26700 8730 96700 81600 40100 10500 6800 45000 12900 Manganese 1370 290 410 226 135 210 315 318 113 476 Mercury 0.06 JB (0.11 SQL) 0.52 0.05 U 0.08 JB 0.09 JB 0.07 JB 0.06 U 0.06 U 0.09 JB 0.06 U Nickel 58.4 3.8 JB 5.9 JB 10.7 2.6 JB 4.8 JB 17.1 13.6 3.4 JB 10.5 Potassium 11660 891 JB 2380 267 JB 123 JB 598 JB 2930 2250 250 JB 1370 Selenium 1.5 JL 0.69 U 0.73 U 0.68 U 0.73 U 0.76 U 0.78 U 0.77 U 0.68 U 0.85 U Silver 6.7 0.25 JB 0.28 JB 0.27 JB 0.36 JB 0.32 JB 0.51 JB 0.51 JB 0.22 JB 0.40 JB Sodium 3308 JB 121 JB 54.0 JB 157 U 186 U 286 JB 282 JB 261 JB 230 JB 341 JB Thallium 1.4 U 0.79 U 0.84 U 0.78 U 0.91 U 0.87 U 0.89 U 0.89 U 0.78 U 0.97 U Vanadium 51.2 13.9 20.6 5.2 JB 1.9 JB 7.6 JB 45.2 33.1 4.1 JB 20.5 Zinc 835 3450 4950 6340 JK 2430 2770 813 907 2920 1100 Page 3 of 9 6-86 ------- Table 6-6 VAN STONE MINE/MILL SURFACE SOIL SAMPLES ANALYTICAL RESULTS SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID 01254205 01254206 01254207 01254312 01254315 01254316 01254317 01254318 01254319 CLP Inorganic ID MJ0GK4 MJ0GK5 MJ0GK6 MJ0EW6 MJ0EW9 MJ0EX0 MJ0EX1 MJ0EX8 MJ0EX3 CLP Organic ID NU NU NU NU NU NU NU NU NU E & E Sample ID NU NU NU NU NU NU NU NU NU Station Location VSWP10SS VSWP11SS VSWP12SS VSTP21SS VSTP01SS VSTP02SS VSTP03SS VSTP04SS VSTP05SS Sample Depth 0-6 0-6 0-6 0-6 0-6 0-6 0-6 0-6 0-4 Description Background Waste Rock Pile Tailings Pile SV OCs (ng/kg) 9H-Carbazole NU NU NU NU NU NU NU NU NU NU 9H-Fluorene NU NU NU NU NU NU NU NU NU NU Acenaphthene NU NU NU NU NU NU NU NU NU NU Acenaphthylene NU NU NU NU NU NU NU NU NU NU Anthracene NU NU NU NU NU NU NU NU NU NU Benzo(a)anthracene NU NU NU NU NU NU NU NU NU NU Benzo(a)pyrene NU NU NU NU NU NU NU NU NU NU Benzo(g,h,i)perylene NU NU NU NU NU NU NU NU NU NU Benzo [b] Fluoranthene NU NU NU NU NU NU NU NU NU NU Benzo [k] fluoranthene NU NU NU NU NU NU NU NU NU NU Chrysene NU NU NU NU NU NU NU NU NU NU Dibenzo[a,h]anthracene NU NU NU NU NU NU NU NU NU NU Dibenzofuran NU NU NU NU NU NU NU NU NU NU Di-n-octylphthalate NU NU NU NU NU NU NU NU NU NU Indeno( 1,2,3-cd)pyrene NU NU NU NU NU NU NU NU NU NU Isophorone NU NU NU NU NU NU NU NU NU NU Naphthalene NU NU NU NU NU NU NU NU NU NU Naphthalene, 2-methyl- NU NU NU NU NU NU NU NU NU NU Phenanthrene NU NU NU NU NU NU NU NU NU NU Pyrene NU NU NU NU NU NU NU NU NU NU 6-87 Page 4 of 9 ------- Table 6-6 VAN STONE MINE/MILL SURFACE SOIL SAMPLES ANALYTICAL RESULTS SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID 01254320 01254321 01254322 01254323 01254331 01254332 01254333 01254334 01254335 CLP Inorganic ID MJ0EX4 MJ0EX5 MJ0EX6 MJ0EX7 MJ0EY5 MJ0EY6 MJ0EY7 MJ0EY8 MJ0EY9 CLP Organic ID NU NU NU NU NU NU NU NU NU E & E Sample ID NU NU NU NU NU NU NU NU NU Station Location VSTP06SS VSTP07SS VSTP08SS VSTP09SS VSTP10SS VSTP11SS VSTP12SS VSTP13SS VSTP14SS Sample Depth (Inches) 0-6 0-6 0-6 0-6 0-6 0-6 0-6 0-6 0-6 Description Background Tailings Pile TAL Metals (mg/kg) Aluminum 18100 12300 11700 12200 13500 4640 8870 3760 1610 2220 Antimony 1.5 JB (15.1 SQL) 1.7 JB 1.6 JB 0.85 JB 0.76 UJK 0.62 UJK 1.1 JB 0.86 JB 0.62 JB 0.59 U Arsenic 68.2 4.5 U 5.2 U 4.2 U 4.8 U 3.3 U 3.0 U 0.96 JB 2.6 0.96 JB Barium 548 321 244 241 261 93.9 86.8 54.3 18.6 JB 26.2 JB Beryllium 0.48 JB (6.3 SQL) 0.40 JB 0.36 JB 0.38 JB 0.41 JB 0.19 JB 0.26 JB 0.15 JB 0.08 JB 0.10 JB Cadmium 7.8 1.0 JB 3.0 1.5 0.59 JB 4.9 5.2 0.67 JB 5.2 0.24 U Calcium 118000 4320 21000 7580 3540 28100 21000 4750 JL 33200 JL 1470 JL Chromium 29.0 7.5 6.3 7.1 6.8 2.4 3.7 2.5 1.9 JB 2.0 JB Cobalt 8.6 JB (63 SQL) 3.3 JB 2.6 JB 2.8 JB 3.2 JB 1.9 JB 1.8 JB 1.4 JB 0.52 JB 1.8 JB Copper 55.2 11.1 JL 18.1 JL 14.1 JL 10.4 JL 25.3 JL 23.6 JL 5.4 11.2 3.0 JB Iron 25200 10400 10900 10500 10400 9150 10600 5200 5090 4060 Lead 183 35.9 109 51.2 18.8 167 143 32.7 87.3 10.7 Magnesium 17900 2320 11000 4150 1960 18000 13300 3200 JL 18000 JL 1230 JL Manganese 1370 675 427 429 506 420 287 260 JH 97.8 JH 94.3 JH Mercury 0.06 JB (0.11 SQL) 0.06 U 0.06 U 0.06 U 0.06 U 0.07 JB 0.06 JB 0.05 U 0.08 JB 0.05 U Nickel 58.4 11.5 9.6 10.0 9.1 JB 2.4 JB 4.3 JB 2.4 JB 1.9 JB 1.6 JB Potassium 11660 1520 1170 JB 1510 1420 1550 1030 JB 734 JB 454 JB 649 JB Selenium 1.5 JL 0.79 U 0.80 U 0.78 U 0.87 U 0.70 U 0.77 U 0.70 UJK 0.70 UJK 0.69 UJK Silver 6.7 0.5 JB 0.47 JB 0.48 JB 0.56 JB 0.26 JB 0.46 JB 0.14 U 0.23 U 0.10 U Sodium 3308 JB 272 JB 309 JB 286 JB 325 JB 203 JB 261 JB 193 JB 164 U 184 JB Thallium 1.4 U 0.90 U 0.92 U 0.89 U 0.99 U 0.80 U 0.89 U 1.0 U 1.1 U 1.0 U Vanadium 51.2 22.3 19.7 23.1 20.3 14.2 15.6 8.8 JB 5.5 JB 8.4 JB Zinc 835 150 1100 565 121 2100 2610 341 2260 106 Page 5 of 9 6-88 ------- Table 6-6 VAN STONE MINE/MILL SURFACE SOIL SAMPLES ANALYTICAL RESULTS SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID 01254320 01254321 01254322 01254323 01254331 01254332 01254333 01254334 01254335 CLP Inorganic ID MJ0EX4 MJ0EX5 MJ0EX6 MJ0EX7 MJ0EY5 MJ0EY6 MJ0EY7 MJ0EY8 MJ0EY9 CLP Organic ID NU NU NU NU NU NU NU NU NU E & E Sample ID NU NU NU NU NU NU NU NU NU Station Location VSTP06SS VSTP07SS VSTP08SS VSTP09SS VSTP10SS VSTP11SS VSTP12SS VSTP13SS VSTP14SS Sample Depth 0-6 0-6 0-6 0-6 0-6 0-6 0-6 0-6 0-6 Description Background Tailings Pile SV OCs (ng/kg) 9H-Carbazole NU NU NU NU NU NU NU NU NU NU 9H-Fluorene NU NU NU NU NU NU NU NU NU NU Acenaphthene NU NU NU NU NU NU NU NU NU NU Acenaphthylene NU NU NU NU NU NU NU NU NU NU Anthracene NU NU NU NU NU NU NU NU NU NU Benzo(a)anthracene NU NU NU NU NU NU NU NU NU NU Benzo(a)pyrene NU NU NU NU NU NU NU NU NU NU Benzo(g,h,i)perylene NU NU NU NU NU NU NU NU NU NU Benzo [b] Fluoranthene NU NU NU NU NU NU NU NU NU NU Benzo [k] fluoranthene NU NU NU NU NU NU NU NU NU NU Chrysene NU NU NU NU NU NU NU NU NU NU Dibenzo[a,h]anthracene NU NU NU NU NU NU NU NU NU NU Dibenzofuran NU NU NU NU NU NU NU NU NU NU Di-n-octylphthalate NU NU NU NU NU NU NU NU NU NU Indeno( 1,2,3-cd)pyrene NU NU NU NU NU NU NU NU NU NU Isophorone NU NU NU NU NU NU NU NU NU NU Naphthalene NU NU NU NU NU NU NU NU NU NU Naphthalene, 2-methyl- NU NU NU NU NU NU NU NU NU NU Phenanthrene NU NU NU NU NU NU NU NU NU NU Pyrene NU NU NU NU NU NU NU NU NU NU 6-89 Page 6 of 9 ------- Table 6-6 VAN STONE MINE/MILL SURFACE SOIL SAMPLES ANALYTICAL RESULTS SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID 01254336 01254337 01254338 01254339 01254324 01254325 01254326 01254327 01254328 01254329 01254330 CLP Inorganic ID MJ0EZ0 MJ0EZ1 MJ0EZ2 MJ0EZ3 MJ0F12 MJ0EX9 MJ0EY0 MJ0EY1 MJ0EY2 MJ0EY3 MJ0EY4 CLP Organic ID NU NU NU NU J0EX8 J0EX9 J0EY0 J0EY1 J0EY2 J0EY3 J0EY4 E & E Sample ID NU NU NU NU NU NU NU NU NU NU NU Station Location VSTP15SS VSTP16SS VSTP17SS VSTP18SS VSSS01SS VSSS02SS VSSS03SS VSSS04SS VSSS05SS VSSS06SS VSSS07SS Sample Depth (Inches) 0-6 0-6 0-6 0-6 0-6 0-6 0-6 0-6 0-6 0-6 0-6 Description Background Tailings Pile Stained Soil TAL Metals (mg/kg) Aluminum 18100 3710 146 7560 4950 1480 2740 3970 68.8 431 4230 8810 Antimony 1.5 JB (15.1 SQL) 0.60 U 1.0 JB 0.61 U 0.67 JB 5.5 JB 2.4 JB 0.70 UJK 113 JL 9.8 JB 1.1 JB 2.0 JB Arsenic 68.2 1.2 JB 9.6 2.7 0.96 U 16.5 9.7 2.2 U 23.6 42.9 11.3 19.0 Barium 548 38.9 JB 5.2 JB 128 82.5 37 JB 54.3 41.2 JB 1.5 JB 7.2 JB 135 121 Beryllium 0.48 JB (6.3 SQL) 0.15 JB 0.02 U 0.37 JB 0.18 JB 0.07 JB 0.13 JB 0.18 JB 0.04 U 0.05 U 0.27 JB 0.46 JB Cadmium 7.8 0.36 JB 14.3 0.86 JB 0.74 JB 702 36.6 1.9 510 940 24.7 8.2 Calcium 118000 2110 JL 84300 JL 5150 JL 8150 JL 37200 JL 55100 12500 1550 6810 99100 26400 Chromium 29.0 2.9 1.3 JB 3.9 2.7 2.2 JB 3.7 3.7 1.2 JB 5.1 3.0 4.7 Cobalt 8.6 JB (63 SQL) 1.2 JB 0.24 U 3.5 JB 1.5 JB 1 JB 2.1 JB 1.6 JB 0.61 JB 0.89 JB 1.7 JB 3.2 JB Copper 55.2 3.6 JB 28.7 5.9 5.9 202 461 JL 5.0 JB 73.1 JL 218 JL 7.6 JL 10.8 JL Iron 25200 5070 6380 12200 7000 32400 15500 7520 31400 75300 11000 16600 Lead 183 16.3 270 25.2 33.8 10900 11000 114 181000 14700 1040 771 Magnesium 17900 1630 JL 44000 JL 5500 JL 5420 JL 22600 JL 32800 8570 2080 5100 68600 20800 Manganese 1370 131 JH 110 JH 388 JH 211 JH 412 JH 267 160 266 659 260 294 Mercury 0.06 JB (0.11 SQL) 0.05 U 0.17 0.05 U 0.05 U 3.2 0.21 0.05 U 0.05 U 6J 0.15 0.60 Nickel 58.4 2.6 JB 2.5 JB 2.9 JB 2.5 JB 5.1 JB 4.8 JB 2.5 JB 6.0 JB 10.7 4.4 JB 3.5 JB Potassium 11660 815 JB 122 JB 3090 1180 499 JB 1100 JB 1120 JB 60.0 JB 127 JB 997 JB 2720 Selenium 1.5 JL 0.70 UJK 0.73 UJK 0.71 UJK 0.71 UJK 0.92 UJK 0.88 U 0.79 U 2.0 JH 0.80 U 0.71 U 0.99 U Silver 6.7 0.13 U 0.29 U 0.28 U 0.23 U 3.3 1.9 JB 0.22 JB 27.1 6.8 0.41 JB 0.44 JB Sodium 3308 JB 279 JB 286 JB 290 JB 286 JB 6080 296 JB 251 JB 4850 13800 295 JB 256 JB Thallium 1.4 U 1.0U 1.1 U 1.1 U 1.1 U 1.4 JB 1.0 U 0.91 U 7.8 3.7 0.82 U 1.1 U Vanadium 51.2 9.0 JB 1.6 JB 24.6 11.1 4.5 JB 11.5 JB 14.6 0.49 JB 2.1 JB 11.8 25.8 Zinc 835 171 5870 432 312 189000 12000 812 164000 431000 5770 3560 6-90 Page 7 of 9 ------- Table 6-6 VAN STONE MINE/MILL SURFACE SOIL SAMPLES ANALYTICAL RESULTS SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID 01254336 01254337 01254338 01254339 01254324 01254325 01254326 01254327 01254328 01254329 01254330 CLP Inorganic ID MJ0EZ0 MJ0EZ1 MJ0EZ2 MJ0EZ3 MJ0F12 MJ0EX9 MJ0EY0 MJ0EY1 MJ0EY2 MJ0EY3 MJ0EY4 CLP Organic ID NU NU NU NU J0EX8 J0EX9 J0EY0 J0EY1 J0EY2 J0EY3 J0EY4 E & E Sample ID NU NU NU NU NU NU NU NU NU NU NU Station Location VSTP15SS VSTP16SS VSTP17SS VSTP18SS VSSS01SS VSSS02SS VSSS03SS VSSS04SS VSSS05SS VSSS06SS VSSS07SS Sample Depth 0-6 0-6 0-6 0-6 0-6 0-6 0-6 0-6 0-6 0-6 0-6 Description Background Tailings Pile Stained Soil SV OCs (ng/kg) 9H-Carbazole NU NU NU NU NU 175 145 U 72.8 U NU NU 342 U 560 U 9H-Fluorene NU NU NU NU NU 794 145 U 72.8 U NU NU 342 U 560 U Acenaphthene NU NU NU NU NU 618 145 U 72.8 U NU NU 342 U 560 U Acenaphthylene NU NU NU NU NU 25.1 J 145 U 72.8 U NU NU 342 U 560 U Anthracene NU NU NU NU NU 779 145 U 72.8 U NU NU 342 U 560 U Benzo(a)anthracene NU NU NU NU NU 1440 145 U 8.5 J NU NU 342 U 560 U Benzo(a)pyrene NU NU NU NU NU 1680 290 U 146 U NU NU 685 U 1120 U Benzo(g,h,i)perylene NU NU NU NU NU 901 145 U 72.8 U NU NU 342 U 560 U Benzo [b] Fluoranthene NU NU NU NU NU 654 290 U 146 U NU NU 685 U 1120 U Benzo [k] fluoranthene NU NU NU NU NU 983 145 U 72.8 U NU NU 342 U 560 U Chrysene NU NU NU NU NU 1650 145 U 72.8 U NU NU 342 U 560 U Dibenzo[a,h]anthracene NU NU NU NU NU 140 145 U 72.8 U NU NU 342 U 560 U Dibenzofuran NU NU NU NU NU 177 145 U 72.8 U NU NU 342 U 560 U Di-n-octylphthalate NU NU NU NU NU 78.8 U R 72.8 U NU NU 342 U 560 U Indeno( 1,2,3-cd)pyrene NU NU NU NU NU 688 290 U 146 U NU NU 685 U 1120 U Isophorone NU NU NU NU NU 78.8 U 99.7 J 72.8 U NU NU 342 U 560 U Naphthalene NU NU NU NU NU 1030 145 U 72.8 U NU NU 342 U 560 U Naphthalene, 2-methyl- NU NU NU NU NU 610 145 U 72.8 U NU NU 342 U 560 U Phenanthrene NU NU NU NU NU 5090 145 U 72.8 U NU NU 342 U 560 U Pyrene NU NU NU NU NU 4350 145 U 72.8 U NU NU 342 U 560 U 6-91 Page 8 of 9 ------- Note: Key: B CLP E&E EPA H ID J K L mg/kg Hg/kg NU SQL ss ss SVOCs TAL TP U vs WP Bold type indicates sample concentration is above the detection limit. Underlined type indicates the sample results is significant as defined in Section 5. = The reported concentration is between the instrument detection limit and the contract required detection limit. = Contract Laboratory Program. = Ecology and Environment, Inc. = United States Environmental Protection Agency. = High bias. = Identification. = The analyte was positively identified. The associated numerical value is an estimate. = Unknown bias. = Low bias. = Milligrams per kilogram. = Micrograms per kilogram. = Not utilized. = Sample quantitation limit. = Surface soil. = Stained soil. = Semivolatile Organic Compounds. = Target Analyte List. = Tailings pile. = The analyte was not detected. The associated numerical value is the contract required detection limit. = Van Stone Mine/Mill. = Waste Rock Pile. 6-92 Page 9 of 9 ------- Table 6-7 VAN STONE MINE/MILL SEDIMENT SAMPLES ANALYTICAL RESULTS SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID 01254363 01254313 01254340 01254314 01254341 01254361 01254364 CLP Inorganic ID MJ0FK2 MJ0EW7 MJ0EW8 MJ0FK0 MJ0FK3 CLP Organic ID J0FJ1 J0EZ4 J0EZ5 J0FK0 J0FJ2 E & E Sample ID NU NU NU NU NU Station Location VSMW01SD VSPP01SD VSPP02SD VSPP03SD VSPP04SD Sample Depth (inches) 6-8 6-8 6-8 6-8 6-8 Description Background Mine Pit PPE 1 PPE 2 PPE 3 PPE 4 TAL Metals (mg/kg) Aluminum 20200 2070 1140 2010 1970 5440 Arsenic 13.0 3.2 U 9.2 2.1 U 13.8 1.4 U Barium 450 48.6 JB 41.0 JB 27.8 JB 20.7 JB 86.0 Cadmium 3.4 1.2 IB 6.0 0.07 U 11.9 0.17 JB Calcium 109000 32000 99300 1030 JB 28200 2800 Chromium 32.3 2.4 IB 1.5 JB 1.7 JB 2.0 JB 2.9 JB Cobalt 11.9 0.88 JB 0.3 U 0.71 JB 1.1 JB 1.5 JB Copper 69.3 2.1 JB 23.0 JL 1.5 JB 2.3 JB 3.3 JB Iron 27900 3730 4460 3710 6300 7560 Lead 124 50.4 466 2.2 124 8.1 Magnesium 33500 17000 56100 709 JB 14400 1410 JB Manganese 673 120 95.7 192 162 386 Nickel 31.9 2.2 JB 1.7 JB 1.0 JB 2.9 JB 2.6 JB Potassium 3920 JK 508 JB 265 JB 485 JB 515 JB 847 JB Vanadium 47.4 6.2 JB 4.4 JB 6.6 JB 10.0 JB 12.7 JB Zinc 239 526 1960 13.0 3670 112 Pesticide/PCBs (Ug/kg) Endrin Ketone 4.0 4.0 U 4.4 U 3.7 U 4.1 U 4.6 U Note: Bold type indicates sample concentration is above the detection limit. Underlined type indicates the sample results is significant as defined in Section 5. 6-93 Page 1 of2 ------- Key: B = The reported concentration is between the instrument detection limit and the contract required detection limit. CLP = Contract Laboratory Program. E & E = Ecology and Environment, Inc. EPA = United States Environmental Protection Agency. ID = Identification. J = The analyte was positively identified. The associated numerical value is an estimate. K = Unknown bias. mg/kg = Milligrams per kilogram. fj.g/kg = Micrograms per kilogram. MW = Mine water. NU = Not utilized. PCBs = Polychlorinated biphenyls. PPE = Probable point of entry. SD = Sediment. TAL = Target Analyte List. U = The analyte was not detected. The associated numerical value is the contract required detection limit. VS = Van Stone Mine/Mill. 6-94 Page 2 of 2 ------- Table 6-8 LeROI/NORTHPORT SMELTER SURFACE SOIL SAMPLES ANALYTICAL RESULTS SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID 01374188 01374182 01374183 01374184 CLP Inorganic ID MJ0KK8 MJ0KK0 MJ0KK1 MJ0KK2 CLP Organic ID NU NU NU NU E & E Sample ID NU NU NU NU Station Location NSBK02SS NSSL01SS NSSL02SS NSSL03SS Sample Depth (inches) 0-6 0-6 0-6 0-6 Description Background Slag TAL Metals (mg/kg) Aluminum 4810 13200 13600 8070 Antimony 1.5 JB 11.8 JB 21.4 JL 60.6 JL (15.1 SQL) Arsenic 2.6 294 JL 297 JL 209 JL Barium 194 157 178 87.1 Cadmium 1.3 2.0 26.9 105 Calcium 90500 4790 JK 23700 JK 15800 JK Chromium 17.6 13.0 10.8 10.4 Cobalt 2.9 JB 20.5 112 42.0 (12.6 SQL) Copper 17.3 2430 14700 4480 Iron 7690 31800 35700 23200 Lead 57.0 2600 7980 10500 Magnesium 3520 3550 8040 5970 Manganese 152 275 594 351 Mercury 0.06 U 0.28 0.34 0.40 Nickel 8.0 JB 12.0 25.3 16.5 (10.1 SQL) Potassium 897 JB 1310 4900 1910 Selenium 1.1 JB 1.2 0.76 U 1.4 (1.3 SQL) Silver 0.57 JB 13.1 21.3 26.7 (2.5 SQL) Vanadium 13.8 33.8 44.1 27.9 Zinc 60.9 120 978 5420 Note: Bold type indicates sample concentration is above the detection limit. Underlined type indicates the sample results is significant as defined in Section 5. Key: B = The reported concentration is between the instrument detection limit and the contract required detection limit. BK = Background. CLP = Contract Laboratory Program. E & E = Ecology and Environment, Inc. EPA = United States Environmental Protection Agency. ID = Identification. J = The analyte was positively identified. The associated numerical value is an estimate. K = Unknown bias. L = Low bias. mg/kg = Milligrams per kilogram. NS = LeRoi Northport Smelter. NU = Not utilized. SL = Slag. SQL = Sample quantitation limit. SS = Surface soil. TAL = Target Analyte List. U = The analyte was not detected. The associated numerical value is the contract required detection limit. 6-95 ------- Table 6-9 LeROI/NORTHPORT SMELTER SEDIMENT SAMPLES ANALYTICAL RESULTS SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID 011980403 01264431 01264432 01264433 01264434 01264435 01264436 01264437 01264438 01264439 CLP Inorganic ID NU MJ0GP0 MJ0GP1 MJ0GP2 MJ0GP3 MJ0GP4 MJ0GP5 MJ0GP6 MJ0GP7 MJ0GP8 CLP Organic ID NU NU NU NU NU NU NU NU NU NU E & E Sample ID NU NU NU NU NU NU NU NU NU NU Station Location NU NSSL01SD NSSL02SD NSSL03SD NSSL04SD NSSL05SD NSSL06SD NSSL07SD NSSL08SD NSSL09SD Sample Depth (Inches) NU 0-6 0-6 0-6 0-6 0-6 0-6 0-6 0-6 0-6 Description Background Columbia River Slag (PPE 3) TAL Metals (mg/kg) Arsenic 2 U L5 15 19.3 23.9 41.4 10.9 12.3 11.1 15.9 Cadmium 0.47 L6 0.81 JB 0.74 JB L5 LI 33 49 3J M Copper 3.6 238 JL 1540 JL 2070 JL 2530 JL 2960 JL 349 JL 257 JL 347 JL 357 JL Lead 12 230 JK 246 JK 292 JK 388 JK 507 JK 470 JK 548 JK 597 JK 845 JK Mercury 0.0004 U 0.06 U 0.06 U 0.07 U 0.06 U 0.06 U 0.08 JB 0.11 JB 0.08 JB 0.29 Zinc 26.9 1520 10500 13000 15100 16900 3920 2800 5430 5280 Note: a The highest concentration between the sample and the duplicate of the sample. Sample was collected by Ecology in May of 2001 at Lower Arrow Lake in Canada. Bold type indicates sample concentration is above the detection limit. Underlined type indicates the sample results is significant as defined in Section 5. Key: B = The reported concentration is between the instrument detection limit and the contract required detection limit. BK = Background. CLP = Contract Laboratory Program. E & E = Ecology and Environment, Inc. EPA = United States Environmental Protection Agency. ID = Identification. J = The analyte was positively identified. The associated numerical value is an estimate. K = Unknown bias. L = Low bias. mg/kg = Milligrams per kilogram. NS = Northport Smelter. NU = Not utilized. PPE = Probable point of entry. R = The data are unusable for all purposes. SD = Sediment. SL = Slag. SQL = Sample quantitation limit. TAL = Target Analyte List. U = The analyte was not detected. The associated numerical value is the contract required detection limit. 6-96 ------- Table 6-10 LeROI/NORTHPORT SMELTER SEDIMENT SAMPLE ANALYTICAL RESULTS SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID 01374187 01374186 01374185 CLP Inorganic ID MJ0KK5 MJ0KK4 MJ0KK3 CLP Organic ID J0KJ3 J0KJ2 J0KJ1 E & E Sample ID 01090432 01090431 01090430 Station Location NSBK01SD NSPP01SD NSDT01SD Sample Depth (Inches) 0-8 0-8 0-8 Description Background PPE 1 PPE 2 TAL Metals (mg/kg) Aluminum 2740 7650 JK 7170 Antimony 0.73 UJL 8.3 JB 0.68 U Arsenic 1.2 UJL 39.9 JK 17.6 JL Barium 145 413 JK 69.0 Cadmium 0.26 JB (1.3 SQL) 5.9 JK M Calcium 90700 JK 222000 JK 3110 JK Chromium 7.6 34.8 JK 14.5 Cobalt 1.7 JB (12.6 SQL) 16.3 JB 5.8 JB Copper 6.8 1090 JK 124 Iron 6560 15400 JK 13700 Lead 16.6 887 JK 87.1 Magnesium 2600 5950 JK 3650 Manganese 87.3 339 JK 261 Mercury 0.06 U R 0.06 U Nickel 4.1 JB (10.1 SQL) 14.5 JB 13.3 Potassium 485 JB 1650 JB 1380 Selenium 0.86 U 5.8 JK 0.79 U Silver 0.15 U 3.3 JB 0.92 JB Sodium 175 JB 684 JB 189 JB Vanadium 14.6 24.8 JB 24.7 Zinc 26.4 223 92.2 Note: Bold type indicates sample concentration is above the detection limit. Underlined type indicates the sample results is significant as defined in Section 5. B = The reported concentration is between the instrument detection limit and the contract required detection limit. BK = Background. CLP = Contract Laboratory Program. E & E = Ecology and Environment, Inc. EPA = United States Environmental Protection Agency. ID = Identification. J = The analyte was positively identified. The associated numerical value is an estimate. K = Unknown bias. L = Low bias. mg/kg = Milligrams per kilogram. NS = Northport Smelter. PP = PPE. PPE = Probable point of entry. R = The data are unusable for all purposes. SD = Sediment. SQL = Sample quantitation limit. TAL = Target Analyte List. U = The analyte was not detected. The associated numerical value is the contract required detection limit. 6-97 ------- Table 6-11 BLACK ROCK MINE/MILL SURFACE SOIL SAMPLES ANALYTICAL RESULTS SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID 01254160 01254161 01254162 01254163 01254164 CLP Inorganic ID MJ0GE9 MJ0GF0 MJ0GF1 MJ0GF2 MJ0GF3 CLP Organic ID NU NU NU NU NU E & E Sample ID NU NU NU NU NU Station Location BRWP01SS BRWP02SS BRWP03SS BRMS01SS BRMS02SS Sample Depth (inches) 0-6 0-6 0-6 0-6 0-6 Description Background Waste Rock Pile Mill Soil TAL Metals (mg/kg) Aluminum 18100 6030 3590 4470 7700 2000 Arsenic 68.2 62.1 JL 15.8 JL 15.4 JL 5.3 JL 3.0 JL Barium 548 3870 2300 2890 593 252 Cadmium 7.8 851 JH 688 JH 1090 JH 27.3 JH 1630 JH Calcium 118000 99000 148000 113000 67200 42400 Chromium 29.0 2.5 2.6 1.9 JB 14.0 2.5 Cobalt 8.6 IB (63 SQL) 4.0 IB 2.5 JB 2.6 JB 4.8 JB 3.1 JB Copper 55.2 389 228 398 22.5 192 Iron 25200 15800 6850 6390 12600 5170 Lead 183 6520 555 1040 1800 318 Magnesium 17900 29100 49200 26800 21400 11200 Manganese 1370 99.8 171 129 268 96.0 Mercury 0.06 JB (0.11 SQL) 26.4 12 18.8 0.19 0.05 U Nickel 58.4 6.4 JB 5.1 JB 3.2 JB 14.6 3.8 JB Potassium 11660 674 JB 211 JB 142 JB 1160 213 JB Selenium 1.5 JL 3.7 2.1 2.3 0.74 U 1.6 Silver 6.7 4.2 1.6 JB 3.8 0.72 JB 4.9 Sodium 3308JB 6810 5060 8780 290 JB 16400 Vanadium 51.2 5.3 JB 5.7 JB 7.0 JB 19.8 2.8 JB Zinc 835 180000 141000 207000 7550 402000 Note: Bold type indicates sample concentration is above the detection limit. Underlined type indicates the sample results is significant as defined in Section 5. Page 1 of 2 6-98 ------- Key: B = The reported concentration is between the instrument detection limit and the contract required detection limit. BR = Black Rock Mine/Mill. CLP = Contract Laboratory Program. E & E = Ecology and Environment, Inc. EPA = United States Environmental Protection Agency. H = High bias. ID = Identification. J = The analyte was positively identified. The associated numerical value is an estimate. L = Low bias. mg/kg = Milligrams per kilogram. MS = Mill soil. NU = Not utilized. SS = Surface soil. TAL = Target Analyte List. U = The analyte was not detected. The associated numerical value is the contract required detection limit. WP = Waste Rock Pile. 6-99 Page 2 of2 ------- Table 6-12 GREAT WESTERN MINE SURFACE SOIL SAMPLES ANALYTICAL RESULTS SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID 01254177 01254178 CLP Inorganic ID MJ0GG6 MJ0GG7 CLP Organic ID NU NU E & E Sample ID NU NU Station Location GWWP01SS GWWP02SS Sample Depth (inches) 0-6 0-6 Description Background Waste Rock Pile TAL Metals (mg/kg) Aluminum 18100 7470 JL 1970 JL Arsenic 68.2 68.4 JH 61.5 JH Barium 548 68.8 19.6 JB Cadmium 7.8 166 JL 490 JL Calcium 118000 78900 JL 97300 JL Chromium 29.0 21.6 JL 14.2 JL Cobalt 8.6 JB (63 SOL) 1.3 JB 0.33 JB Copper 55.2 57.7 JL 46.7 JL Iron 25200 83600 JL 57300 JL Lead 183 6200 24000 Magnesium 17900 49900 JL 61400 JL Manganese 1370 413 JL 572 JL Mercury 0.06 JB (0.11 SQL) 2.5 4.3 Nickel 58.4 15.4 JL 17.7 JL Potassium 11660 766 JB 232 JB Selenium 1.5 JL R R Silver 6.7 5.3 7.5 Sodium 3308 JB 732 JB 2830 Thallium 1.4 U 4.5 2.3 Vanadium 51.2 48.5 JL 33.8 JL Zinc 835 52700 JK 118000 JK Note: Bold type indicates sample concentration is above the detection limit. Underlined type indicates the sample results is significant as defined in Section 5. Key: B = The reported concentration is between the instrument detection limit and the contract required detection limit. CLP = Contract Laboratory Program. E & E = Ecology and Environment, Inc. EPA = United States Environmental Protection Agency. GW = Great Western Mine. H = High bias. ID = Identification. J = The analyte was positively identified. The associated numerical value is an estimate. K = Unknown bias. L = Low bias. mg/kg = Milligrams per kilogram. NU = Not utilized. R = The data are unusable for all purposes. SS = Surface soil. TAL = Target Analyte List. U = The analyte was not detected. The associated numerical value is the contract required detection limit. WP = Waste Rock Pile. 6-100 ------- Table 6-13 LAST CHANCE MINE/MILL SURFACE SOIL SAMPLES ANALYTICAL RESULTS SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID 01254174 01254175 01254176 01254169 01254170 01254171 01254165 01254166 01254167 CLP Inorganic ID MJ0GG3 MJ0GG4 MJ0GG5 MJ0GF8 MJ0GF9 MJ0GG0 MJ0GF4 MJ0GF5 MJ0GF6 CLP Organic ID NU NU NU NU NU NU NU NU NU E & E Sample ID NU NU NU NU NU NU NU NU NU Station Location LCWP01SS LCWP02SS LCWP03SS LCTP01SS LCTP02SS LCTP03SS LCMS01SS LCMS02SS LCMS03SS Sample Depth (inches) 0-6 0-6 0-6 0-6 0-6 0-6 0-6 0-6 0-6 Description Background Waste Rock Pile Tailings Pile Mill Soil TAL Metals (mg/kg) Aluminum 18100 2980 3480 1890 585 418 649 2440 3560 437 Arsenic 68.2 101 105 135 112 JL 120 JL 82.9 JL 71.0 JL 36.0 JL 143 JL Barium 548 26.0 IB 25.8 JB 18.4 JB 18.1 JB 14.1 JB 18.2 JB 84.2 267 13.4 JB Cadmium 7.8 285 349 326 301 JH 269 JH 518 JH 165 JH 136 JH 471 JH Calcium 118000 44400 34700 38800 68200 74800 67000 162000 241000 51200 Chromium 29.0 12.1 11.3 12.8 10.7 10.3 9.2 8.0 7.7 11.5 Cobalt 8.6 IB (63 SQL) 0.24 U 0.24 U 0.26 U 0.24 U 0.24 U 0.23 U 0.26 U 1.5 JB 0.24 U Copper 55.2 48.1 JL 51.6 JL 56.0 JL 53.2 49.2 39.1 50.2 2790 61.1 Iron 25200 156000 161000 167000 181000 166000 113000 103000 37000 200000 Lead 183 113000 125000 170000 110000 72900 110000 29000 18000 86200 Magnesium 17900 28300 22500 24200 39500 46700 32300 15300 10700 31200 Manganese 1370 200 198 216 129 108 98.2 107 185 107 Mercury 0.06 IB (0.11 SQL) 1.5 2.0 2.7 2.3 1.4 1.3 0.06 U 1.3 2.6 Nickel 58.4 13.1 13.3 12.5 10.5 9.7 8.8 8.8 JB 9.5 JB 11.6 Potassium 11660 366 JB 444 JB 261 JB 83.0 JB 69.2 JB 118 JB 241 JB 346 JB 81.7 JB Selenium 1.5 JL 0.75 U 0.75 U 0.80 U 0.74 U 0.74 U 0.71 U 0.81 U 0.86 U 0.73 U Silver 6.7 9.9 10.0 12.1 8.7 6.2 7.5 3.0 9.2 7.3 Sodium 3308 IB 1000 JB 1520 1500 1490 1160 2960 588 JB 385 JB 2640 Thallium 1.4 U 6.5 6.9 8.3 0.85 U 0.85 U 0.82 U 0.93 U 0.99 U 0.84 U Vanadium 51.2 12.0 12.9 14.8 9.5 JB 11.2 8.5 JB 8.4 JB 5.8 JB 14.6 Zinc 835 67700 89800 89300 72600 63900 112000 36900 18600 107000 Note: Bold type indicates sample concentration is above the detection limit. Underlined type indicates the sample results is significant as defined in Section 5. Page 1 of2 6-101 ------- Key: B = The reported concentration is between the instrument detection limit and the contract required detection limit. CLP = Contract Laboratory Program. E & E = Ecology and Environment, Inc. EPA = United States Environmental Protection Agency. H = High bias. ID = Identification. J = The analyte was positively identified. The associated numerical value is an estimate. L = Low bias. LC = Last Chance Mine/Mill. mg/kg = Milligrams per kilogram. MS = Mill soil. NU = Not utilized. SS = Surface soil. TAL = Target Analyte List. TP = Tailings pile. U = The analyte was not detected. The associated numerical value is the contract required detection limit. WP = Waste Rock Pile. 6-102 Page 2 of 2 ------- Table 6-14 LAST CHANCE MINE/MILL SEDIMENT SAMPLES ANALYTICAL RESULTS SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID 01254168 01254173 CLP Inorganic ID MJ0FG7 MJ0GG2 CLP Organic ID NU NU E & E Sample ID NU NU Station Location LCPP01SD LCPP02SD Sample Depth (inches) 0-8 0-8 Description Background PPE 1 PPE 2 TAL Metals (mg/kg) Aluminum 20200 5800 1280 Arsenic 13.0 30.5 JL 1.9 UJK Barium 450 112 70.5 JB Cadmium 3.4 56.9 JH 3.2 JH Calcium 109000 191000 197000 Chromium 32.3 9.5 1.9 JB Cobalt 11.9 1.2 JB 0.51 U Copper 69.3 75.1 3.9 JB Iron 27900 39000 4940 Lead 124 14600 385 Magnesium 33500 14500 7540 Manganese 673 170 58.5 Mercury 0.10 JB (0.102 SQL) 0.46 11 Nickel 31.9 8.6 JB 2.5 JB Potassium 3920 JK 623 JB 315 JB Vanadium 47.4 9.6 JB 3.1 JB Zinc 239 13400 1100 Note: Bold type indicates sample concentration is above the detection limit. Underlined type indicates the sample results is significant as defined in Section 5. Key: B = The reported concentration is between the instrument detection limit and the contract required detection limit. CLP = Contract Laboratory Program. E & E = Ecology and Environment, Inc. EPA = United States Environmental Protection Agency. H = High bias. ID = Identification. J = The analyte was positively identified. The associated numerical value is an estimate. K = Unknown bias. LC = Last Chance Mine/Mill. mg/kg = Milligrams per kilogram. jug/kg = Micrograms per kilogram. PPE = Probable point of entry. SD = Sediment. SQL = Sample quantitation limit. TAL = Target Analyte List. U = The analyte was not detected. The associated numerical value is the contract required detection limit. 6-103 ------- Table 6-15 DEEP CREEK MINE SURFACE SOIL SAMPLES ANALYTICAL RESULTS SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID 01254251 01254252 01254253 01254254 01254267 01254255 01254256 01254257 01254258 CLP Inorganic ID MJ0EN5 MJ0EN6 MJ0EN7 MJ0EN8 MJ0EQ1 MJ0EN9 MJ0EP0 MJ0EP1 MJ0EP2 CLP Organic ID NU J0EN6 J0EN7 J0EN8 NU J0EN9 J0EP0 J0EP1 J0EP2 E & E Sample ID NU NU NU NU NU NU NU NU NU Station Location DCWP01SS DCWP02SS DCWP03SS DCWP04SS DCWP05SS DCTP01SS DCTP02SS DCTP03SS DCTP04SS Sample Depth (inches) 0-6 0-6 0-6 0-6 0-6 0-6 0-6 0-6 0-6 Description Background Waste Rock Pile Tailings Pile TAL Metals (mg/kg) Aluminum 18100 133 1350 2070 1750 75.7 761 656 439 497 Arsenic 68.2 4.5 5.4 4.4 2.8 1.9 JB 12.3 14.0 8.8 11.6 Barium 548 1.4 U 23.5 JB 57.6 30.2 JB 1.4 U 10.6 JB 11.3 JB 6.8 JB 9.6 JB Cadmium 7.8 8.1 16.3 24.9 25.2 15.1 147 160 124 138 Calcium 118000 187000 173000 132000 153000 180000 137000 141000 162000 155000 Chromium 29.0 0.41 U 2.3 3.4 3.2 0.62 U 2.7 2.5 JB 1.9 JB 1.8 JB Cobalt 14.7 0.22 U 0.58 JB 1.4 JB 1.4 JB 0.26 U 0.29 U 0.33 JB 0.28 U 0.28 U Copper 55.2 13.1 JL 10.4 JL 10.2 JL 8.6 JL 10.0 JL 52.0 JL 46.5 JL 29.7 JL 30.5 JL Iron 25200 2120 7160 7210 6090 2310 11600 13500 10900 12200 Lead 183 476 799 558 416 324 6110 5990 3350 5230 Magnesium 17900 125000 105000 67000 93900 117000 75500 78800 87800 86300 Manganese 1370 172 184 175 206 167 186 197 183 192 Mercury 0.06 IB (0.11 SQL) 0.06 JB 0.25 0.14 0.21 0.06 U 27 2A M M Nickel 58.4 0.67 U 3.2 JB 4.1 JB 3.6 JB 0.74 JB 4.2 JB 4.9 JB 3.6 JB 3.8 JB Potassium 11660 45.5 JB 224 JB 449 JB 413 JB 33.2 JB 95.6 JB 98.5 JB 56.1 JB 67.3 JB Selenium 1.5 JL 0.69 U 0.69 U 0.76 U 0.75 U 0.79 U 0.89 U 0.90 U 0.87 U 0.86 U Silver 6.7 0.16 U 0.42 JB 0.18 JB 0.18 U 0.19 U 2.4 JB 2.4 JB 1.5 JB 1.9 JB Sodium 377 JB 186 JB 213 JB 230 JB 230 JB 192 JB 604 JB 731 JB 573 JB 585 JB Vanadium 51.2 1.6 JB 11.4 7.2 JB 6.4 JB 5.2 JB 14.8 18.2 14.6 14.9 Zinc 835 2030 4220 6770 7780 4680 37500 41300 34400 34500 Pesticide/PCBs (|Xg/kg) 4,4'-DDT | 3.5 U | NU 3.4 U 3.7 U 3.6 U NU 4.5 U 5.5 U 4U 4.1 JQ 6-104 Page 1 of 4 ------- Table 6-15 DEEP CREEK MINE SURFACE SOIL SAMPLES ANALYTICAL RESULTS SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID 01254259 01254260 01254261 01254262 01254263 01254264 01254265 01254266 01254268 CLP Inorganic ID MJ0EP3 MJ0EP4 MJ0EP5 MJ0EP6 MJ0EP7 MJ0EP8 MJ0EP9 MJ0EQ0 MJ0EQ2 CLP Organic ID J0EP3 J0EP4 J0EP5 J0EP6 J0EP7 J0EP8 J0EP9 J0EQ0 J0EQ2 E & E Sample ID NU NU NU NU NU NU NU NU NU Station Location DCTP05SS DCTP06SS DCTP07SS DCTP08SS DCTP09SS DCTP10SS DCTP11SS DCTP12SS DCTP13SS Sample Depth (inches) 0-6 0-6 0-6 0-6 0-6 0-6 0-6 0-6 0-6 Description Background Tailings Pile TAL Metals (mg/kg) Aluminum 18100 819 617 455 593 750 405 354 344 795 Arsenic 68.2 12 15.6 11.4 14.6 22.6 9.7 9.8 12.7 8.0 Barium 548 13.2 JB 11.3 JB 5.9 JB 9.1 JB 29.0 JB 7.3 JB 7.8 JB 10.5 JB 9.2 JB Cadmium 7.8 169 232 142 162 192 122 151 170 425 Calcium 118000 147000 154000 147000 144000 147000 149000 157000 155000 132000 Chromium 29.0 2.2 IB 2.2 JB 1.9 JB 2.5 JB 2.8 1.6 JB 1.5 JB 1.6 JB 1.9 JB Cobalt 14.7 0.37 JB 0.28 U 0.29 U 0.29 U 0.35 JB 0.30 U 0.28 U 0.27 U 0.49 JB Copper 55.2 32.0 JL 43.7 JL 41.0 JL 53.2 JL 35.5 JL 31.2 JL 33.3 JL 35.5 JL 60.2 JL Iron 25200 18500 18300 11200 13700 15300 10700 11900 16600 17800 Lead 183 5410 13300 4900 6290 8250 5200 5660 6700 1860 Magnesium 17900 85000 92200 85100 83900 80600 85000 94300 94900 82600 Manganese 1370 194 186 199 202 186 170 208 198 226 Mercury 0.06 IB (0.11 SQL) LZ 3;2 M M 23 0.97 2A 12 LI Nickel 58.4 6.4 JB 6.8 JB 3.7 JB 4.8 JB 5.9 JB 3.3 JB 4.0 JB 5.2 JB 4.4 JB Potassium 11660 153 JB 78.4 JB 43.6 JB 74.4 JB 78.3 JB 55.3 JB 27.4 JB 42.5 JB 101 JB Selenium 1.5 JL 0.84 U 0.85 U 0.89 U 0.91 U 0.92 U 0.94 U 0.86 U 0.84 U 0.72 U Silver 6.7 2.1 JB 3.0 2.1 JB 2.7 JB 2.4 JB 1.6 JB 1.6 JB 2.1 JB 1.3 JB Sodium 377 JB 847 JB 1130 JB 531 JB 814 JB 767 JB 559 JB 682 JB 809 JB 3340 Vanadium 51.2 11.7 JB 10.5 JB 14.4 20.5 29.5 11.4 JB 12.3 JB 12.9 8.8 JB Zinc 835 48300 58000 33300 46000 44300 33100 39800 46300 123000 Pesticide/PCBs (|Xg/kg) 4,4'-DDT | 3.5 U | 4.2 U 4.1 U 4.3 U 4.3 U 3.9 JQ 4.3 U 4.1 U 4.1 U 3.6 U 6-105 Page 2 of 4 ------- Table 6-15 DEEP CREEK MINE SURFACE SOIL SAMPLES ANALYTICAL RESULTS SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID 01254269 01254270 01254272 01254273 01254274 CLP Inorganic ID MJ0EQ3 MJ0EQ4 MJ0EQ6 MJ0EQ7 MJ0EQ8 CLP Organic ID J0EQ3 J0EQ4 J0EQ6 J0EQ7 J0EQ8 E & E Sample ID NU NU NU NU NU Station Location DCTP14SS DCTP15SS DCTP16SS DCTP17SS DCTP18SS Sample Depth (inches) 0-6 0-6 0-6 0-6 0-6 Description Background Tailings Pile TAL Metals (mg/kg) Aluminum 18100 189 913 1500 2820 3730 Arsenic 68.2 4.7 9.1 11.5 U 1.5 U 2.6 U Barium 548 2.6 JB 17.6 JB 125 JB 34.6 JB 32.1 JB Cadmium 7.8 23.8 96.2 261 30.7 18.3 Calcium 118000 175000 136000 155000 131000 142000 Chromium 29.0 0.66 U 6.7 3.8 JB 3.5 4.8 Cobalt 14.7 0.23 U 0.53 JB 1.3 U 0.88 JB 1.3 JB Copper 55.2 4.4 JB 21.1 JL 148 JL 19.9 JL 12.4 JL Iron 25200 11900 17800 3460 5660 7270 Lead 183 280 4360 4240 632 202 Magnesium 17900 116000 83400 15700 72000 90700 Manganese 1370 193 184 54.8 153 183 Mercury 0.06 JB (0.11 SQL) 0.48 0.51 0.58 JB 0.17 0.35 Nickel 58.4 2.8 JB 10 16.5 JB 5.3 JB 7.7 JB Potassium 11660 28.3 JB 155 JB 483 JB 427 JB 577 JB Selenium 1.5 JL 0.70 U 0.71 U 5.3 JB 1.2 JB 0.84 U Silver 6.7 0.24 JB 1.1 JB 1.2 JB 0.23 U 0.28 JB Sodium 377 IB 229 JB 561 JB 665 JB 166 JB 193 JB Vanadium 51.2 10.4 9.7 JB 3.7 JB 6.9 JB 10.3 JB Zinc 835 10800 31300 51500 4240 6720 Pesticide/PCBs (|ig/kg) 4,4'-DDT 3.5 U 3.4 U 3.6 U 15 U 4.8 U 4.5 U 6-106 Page 3 of 4 ------- Note: Bold type indicates sample concentration is above the detection limit. Underlined type indicates the sample results is significant as defined in Section 5. Key: B = The reported concentration is between the instrument detection limit and the contract required detection limit. CLP = Contract Laboratory Program. DC = Deep Creek Mine. E & E = Ecology and Environment, Inc. EPA = United States Environmental Protection Agency. ID = Identification. J = The analyte was positively identified. The associated numerical value is an estimate. L = Low bias. mg/kg = Milligrams per kilogram. (xg/kg = Micrograms per kilogram. NU = Not utilized. PCBs = Polychlorinated biphenyls. Q = The result is estimated because it is below the Contract Required Detection Limit. SS = Surface soil. TAL = Target Analyte List. TP = Tailings pile. U = The analyte was not detected. The associated numerical value is the contract required detection limit. WP = Waste Rock Pile. 6-107 Page 4 of 4 ------- Table 6-16 COPPER KING MINE SURFACE SOIL SAMPLES ANALYTICAL RESULTS SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID 01254156 01254157 CLP Inorganic ID MJ0GE5 MJ0GE7 CLP Organic ID NU NU E & E Sample ID NU NU Station Location CKWP01SS CKWP02SS Sample Depth (inches) 0-6 0-6 Description Background Waste Rock Pile TAL Metals (mg/kg) Aluminum 18100 308 476 Arsenic 68.2 4.3 JL 2.2 JB Barium 548 12.3 JB 34 JB Cadmium 7.8 0.07 U 0.07 U Calcium 118000 16000 958 JB Chromium 29.0 1.1 JB 2.6 Cobalt 8.6 JB 0.26 U 0.26 U (63 SQL) Copper 55.2 559 1700 Iron 25200 367000 262000 Lead 183 24.3 27.6 Magnesium 17900 4360 334 JB Manganese 1370 282 276 Mercury 0.06 JB 0.12 0.06 U (0.11 SQL) Nickel 58.4 0.36 U 0.58 JB Potassium 11660 377 JB 336 JB Selenium 1.5 JL 15.1 18.9 Silver 6.7 6.2 8.5 Thallium 1.4 U 2.4 3.7 Vanadium 51.2 3.0 JB 5.5 JB Zinc 835 668 31.0 Note: Bold type indicates sample concentration is above the detection limit. Underlined type indicates the sample results is significant as defined in Section 5. Key: B = The reported concentration is between the instrument detection limit and the contract required detection limit. CK = Copper King Mine. CLP = Contract Laboratory Program. E & E = Ecology and Environment, Inc. EPA = United States Environmental Protection Agency. ID = Identification. J = The analyte was positively identified. The associated numerical value is an estimate. L = Low bias. mg/kg = Milligrams per kilogram. NU = Not utilized. SS = Surface soil. TAL = Target Analyte List. U = The analyte was not detected. The associated numerical value is the contract required detection limit. WP = Waste rock pile. 6-108 ------- Table 6-17 COPPER KING MINE SEDIMENT SAMPLES ANALYTICAL RESULTS SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENT AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID 01254159 CLP Inorganic ID MJ0GE8 CLP Organic ID NU E & E Sample ID NU Station Location CKPP01SD Sample Depth (inches) 0-8 Description Background PPE 1 TAL Metals (mg/kg) Aluminum 20200 5750 Arsenic 13.0 4.9 JL Barium 450 1320 Cadmium 3.4 0.88 IB Calcium 109000 149000 Chromium 32.3 6.5 Cobalt 11.9 1.5 JB Copper 69.3 6.3 Iron 27900 17700 Lead 124 33.0 Magnesium 33500 86900 Manganese 673 456 Nickel 31.9 5.9 JB Potassium 3920 JK 858 JB Vanadium 47.4 7.3 JB Zinc 239 318 Note: Bold type indicates sample concentration is above the detection limit. Key: B = The reported concentration is between the instrument detection limit and the contract required detection limit. CK = Copper King Mine. CLP = Contract Laboratory Program. E & E = Ecology and Environment, Inc. EPA = United States Environmental Protection Agency. ID = Identification. J = The analyte was positively identified. The associated numerical value is an estimate. K = Unknown bias. L = Low bias. mg/kg = Milligrams per kilogram. PP = Probable point of entry. PPE = Probable point of entry. SD = Sediment. TAL = Target Analyte List. 6-109 ------- Table 6-18 SIERRA ZINC MINE/MILL SURFACE SOIL SAMPLES ANALYTICAL RESULTS SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENT AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID 01254299 01254300 01254301 01254302 01254303 01254304 01254305 01254306 01254307 CLP Inorganic ID MJ0ET3 MJ0ET4 MJ0ET5 MJ0ET6 MJ0ET7 MJ0ET8 MJ0ET9 MJ0EW0 MJ0EW1 CLP Organic ID J0ET3 NU J0ET5 NU NU NU NU NU NU E & E Sample ID J0ET4 NU NU NU NU NU NU NU NU Station Location SZWP01SS SZWP02SS SZWP03SS SZWP04SS SZWP05SS SZWP06SS SZWP07SS SZWP08SS SZWP09SS Sample Depth (inches) 0-6 0-6 0-6 0-6 0-6 0-6 0-6 0-6 0-6 Description Background Waste Rock Pile TAL Metals (mg/kg) Aluminum 18100 5260 6570 4040 788 846 495 1940 2990 2560 Arsenic 68.2 6.4 JH 53.7 JH 12.5 JH 9.6 JH 9.2 JH 5.0 JH 12.6 JH 7.3 JH 9.7 JH Barium 548 32.0 JB 64.7 27.0 JB 13.9 JB 8.0 JB 6.3 JB 24.2 JB 35.7 JB 24.4 JB Cadmium 7.8 21.7 65.1 121 15.8 15.9 13.9 22.7 15.3 22.7 Calcium 118000 17300 53000 72900 152000 156000 157000 85900 71600 106000 Chromium 29.0 7.2 8.1 5.5 1.9 JB 2.2 3.1 2.5 3.3 2.9 Cobalt 8.6 JB (63 SQL) 3.0 JB 2.9 JB 3.1 JB 0.57 JB 0.24 U 0.28 JB 1.2 JB 1.5 JB 0.95 JB Copper 55.2 55.7 JH 130 JH 181 JH 53.9 JH 40.1 JH 61.6 JH 104 JH 46.2 JH 54.4 JH Iron 25200 14200 35400 28300 17500 19600 9820 30100 16500 21700 Lead 183 1460 6570 15800 918 1380 871 2230 1180 1990 Magnesium 17900 5810 26000 38900 95100 98900 100000 52700 43100 63800 Manganese 1370 1150 2730 1850 441 437 462 272 257 245 Mercury 0.06 JB (0.11 SQL) 0.10 JB 1.6 JL 0.68 JL 0.18 JL 0.23 JL 0.10 JB 0.33 JL 0.17 JL 0.25 JL Nickel 58.4 6.1 JB 10 9.9 6.3 JB 7.0 JB 4.6 JB 11.0 6.8 JB 8.7 JB Potassium 11660 1110 JL 845 JB 768 JB 349 JB 117 JB 108 JB 402 JB 843 JB 429 JB Selenium 1.5 JL 0.71 UJK 0.74 UJK 0.73 UJK 0.73 UJK 0.75 UJK 0.74 UJK 0.74 UJK 0.73 UJK 0.76 UJK Silver 6.7 2.2 5.8 5.8 0.61 JB 0.58 JB 0.28 JB 0.95 JB 0.50 JB 0.75 JB Vanadium 51.2 12.7 12.4 10.4 JB 6.5 JB 5.8 JB 5.6 JB 8.0 JB 11.2 7.7 JB Zinc 835 4980 14600 32200 4100 4330 3990 5900 3820 5880 6-110 Page 1 of 5 ------- Table 6-18 SIERRA ZINC MINE/MILL SURFACE SOIL SAMPLES ANALYTICAL RESULTS SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID 01254308 01254309 01254310 01254277 01254278 01254279 01254280 01254281 01254282 CLP Inorganic ID MJ0EW2 MJ0EW3 MJ0EW4 MJ0ER1 MJ0ER2 MJ0ER3 MJ0ER4 MJ0ER5 MJ0ER6 CLP Organic ID NU NU NU NU NU NU NU NU NU E & E Sample ID NU NU NU NU NU NU NU NU NU Station Location SZWP10SS SZWP11SS SZWP12SS SZTP01SS SZTP02SS SZTP03SS SZTP04SS SZTP05SS SZTP06SS Sample Depth (inches) 0-6 0-6 0-6 0-6 0-6 0-6 0-6 0-6 0-6 Description Background Waste Rock Pile Tailings Pile TAL Metals (mg/kg) Aluminum 18100 814 1240 5210 2650 173 298 1700 2580 3230 Arsenic 68.2 9.7 JH 7.0 JH 8.7 JH 7.0 6.4 5.6 6.6 6.6 6.4 Barium 548 46.5 32.8 JB 53.2 195 5.4 JB 7.8 JB 156 300 317 Cadmium 7.8 30.5 29.6 27.2 68.1 23.4 14.4 130 126 111 Calcium 118000 139000 148000 98600 134000 168000 178000 121000 119000 122000 Chromium 29.0 3.3 3.8 4.8 9.7 0.84 JB 1.3 JB 6.4 9.7 11.2 Cobalt 8.6 JB (63 SQL) 0.63 JB 0.67 JB 1.7 JB 1.6 JB 0.23 U 0.28 U 2.3 JB 2.4 JB 3.0 JB Copper 55.2 74.5 JH 144 JH 72.6 JH 370 28.8 33.4 123 251 293 Iron 25200 21000 15200 18200 15700 JK 17900 JK 10600 JK 18400 JK 18100 JK 17000 JK Lead 183 1960 1710 1970 2830 488 2110 1680 2290 3120 Magnesium 17900 86700 91200 60400 77000 105000 105000 70700 70000 72800 Manganese 1370 527 548 483 414 255 265 443 450 487 Mercury 0.06 JB (0.11 SQL) 0.57 JL 0.40 JL 0.38 JL 1.7 JL 0.10 JB 0.24 JL 2.7 JL 2.2 JL 2.1 JL Nickel 58.4 8.7 JB 7.1 JB 8.7 JB 18.7 4.8 JB 3.5 JB 17.5 21.1 21.1 Potassium 11660 250 JB 232 JB 529 JB 943 JB 64.9 JB 91.3 JB 884 JB 1170JB 1260 JB Selenium 1.5 JL 0.78 UJK 0.78 UJK 0.78 UJK 0.84 U 0.71 U 0.88 U 1.3 0.94 U 0.86 U Silver 6.7 3.2 2.3 JB 2.6 9.3 0.63 JB 0.34 JB 17.0 16.4 13.4 Vanadium 51.2 8.2 JB 8.4 JB 10 JB 24.0 6.2 JB 8.5 JB 24.9 30.7 31.2 Zinc 835 7030 7530 6770 17600 JK 6860 JK 3560 JK 33400 JK 29500 JK 26100 JK 6-111 Page 2 of 5 ------- Table 6-18 SIERRA ZINC MINE/MILL SURFACE SOIL SAMPLES ANALYTICAL RESULTS SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID 01254283 01254284 01254285 01254286 01254287 01254288 01254289 01254290 01254291 CLP Inorganic ID MJ0ER7 MJ0ER8 MJ0ER9 MJ0ES0 MJ0ES1 MJ0ES2 M JOE S3 MJ0ES4 MJ0ES5 CLP Organic ID NU NU NU NU NU NU NU NU NU E & E Sample ID NU NU NU NU NU NU NU NU NU Station Location SZTP07SS SZTP08SS SZTP09SS SZTP10SS SZTP11SS SZTP12SS SZTP13SS SZTP14SS SZTP15SS Sample Depth (inches) 0-6 0-6 0-6 0-6 0-6 0-6 0-6 0-6 0-6 Description Background Tailings Pile TAL Metals (mg/kg) Aluminum 18100 214 365 1120 14500 5650 8960 1560 1010 913 Arsenic 68.2 6.5 6.2 8.2 5.8 4.5 3.4 9.8 8.7 9.5 Barium 548 6.8 JB 6.0 JB 37.4 JB 206 73.3 137 52.5 JB 38.3 JB 62.4 Cadmium 7.8 23.2 23.6 45.8 18.3 14.6 18.8 65.6 58.6 54.4 Calcium 118000 161000 160000 153000 53100 82100 39500 148000 154000 153000 Chromium 29.0 1.5 JB 1.6 JB 4.5 8.7 5.6 9.2 6.2 5.2 4.6 Cobalt 8.6 JB (63 SQL) 0.27 U 0.28 U 0.38 JB 3.2 JB 2.0 JB 3.6 JB 0.74 JB 0.60 JB 0.60 JB Copper 55.2 50.7 69.5 146 97.7 63.4 104 236 185 163 Iron 25200 13000 JK 12300 JK 15400 JK 14500 JK 12100 JK 12500 JK 16500 JK 15700 JK 16100 JK Lead 183 1670 1830 3210 1110 1020 917 3470 3620 3450 Magnesium 17900 83100 81000 87200 28700 47900 21500 81600 84500 85000 Manganese 1370 202 191 320 478 264 328 381 372 349 Mercury 0.06 JB (0.11 SQL) 0.36 JL 0.33 JL 0.57 JL 0.26 JL 0.21 JL 0.14 JB 0.70 JL 0.80 JL 0.84 JL Nickel 58.4 5.7 JB 5.0 JB 8.0 JB 11.0 7.6 JB 12.2 11.7 10.5 JB 9.8 JB Potassium 11660 59.3 JB 65.7 JB 174 JB 800 JB 699 JB 1060 JB 483 JB 280 JB 263 JB Selenium 1.5 JL 0.82 U 0.85 U 0.86 U 0.87 U 0.80 U 1.0 U 0.90 U 0.89 U 0.87 U Silver 6.7 0.62 JB 0.71 JB 1.6 JB 1.8 JB 0.92 JB 2.1 JB 6.3 4.1 4.2 Vanadium 51.2 5.3 JB 5.9 JB 10.5 JB 22.5 15.7 21.5 15.5 12.4 JB 11.7 JB Zinc 835 7220 JK 5340 JK 10100 JK 4410 JK 3730 JK 4880 JK 15600 JK 12000 JK 11500 JK 6-112 Page 3 of 5 ------- Table 6-18 SIERRA ZINC MINE/MILL SURFACE SOIL SAMPLES ANALYTICAL RESULTS SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID 01254292 01254293 01254294 01254295 01254296 01254297 01254311 CLP Inorganic ID MJ0ES6 MJ0ES7 MJ0ES8 MJ0ES9 MJ0ET0 MJ0ET1 MJ0EW5 CLP Organic ID NU NU NU NU NU NU J0EW5 E & E Sample ID NU NU NU NU NU NU NU Station Location SZTP16SS SZTP17SS SZTP18SS SZTP19SS SZTP20SS SZTP21SS SZMS01SS Sample Depth (inches) 0-6 0-6 0-6 0-6 0-6 0-6 0-6 Description Background Tailings Pile Mill Soil TAL Metals (mg/kg) Aluminum 18100 383 494 408 714 319 743 1940 Arsenic 68.2 6.5 6.7 JH 6.6 JH 7.2 JH 7.0 JH 5.8 JH 8.4 JH Barium 548 9.2 JB 11.1 JB 14.6 JB 17.0 JB 5.2 JB 11.0 JB 127 Cadmium 7.8 44.7 44.9 46.0 54.7 46.1 70.0 78.2 Calcium 118000 159000 156000 154000 149000 158000 143000 130000 Chromium 29.0 2.9 2.9 2.9 4.4 2.6 4.9 27.3 Cobalt 8.6 IB (63 SQL) 0.28 U 0.28 U 0.3 JB 0.42 JB 0.28 U 0.30 U 6.1 JB Copper 55.2 162 163 JH 180 JH 222 JH 147 JH 297 JH 443 JH Iron 25200 10900 JK 10600 11800 14600 10200 13500 33700 Lead 183 3370 3280 3980 4050 2940 5110 4850 Magnesium 17900 90200 87800 89300 77600 89300 69500 63900 Manganese 1370 301 284 258 569 236 629 520 Mercury 0.06 IB (0.11 SQL) 0.60 JL 0.65 JL 0.62 JL 0.68 JL 0.76 JL 0.77 JL 0.97 JL Nickel 58.4 6.0 JB 5.5 JB 6.0 JB 8.2 JB 5.5 JB 7.8 JB 47.0 Potassium 11660 96.6 JB 108 JB 107 JB 216 JB 79.8 JB 208 JB 367 JB Selenium 1.5 JL 0.85 U 0.87 UJK 0.85 UJK 0.90 UJK 0.87 UJK 0.92 UJK 0.89 UJK Silver 6.7 1.5 JB 1.8 JB 1.8 JB 3.1 1.3 JB 2.8 8.7 Vanadium 51.2 7.2 JB 7.6 JB 7.7 JB 10.5 JB 7.6 JB 12.6 JB 15.0 Zinc 835 10800 JK 9700 9930 12300 10300 14700 17500 6-113 Page 4 of 5 ------- Note: Bold type indicates sample concentration is above the detection limit. Underlined type indicates the sample results is significant as defined in Section 5. Key: B = The reported concentration is between the instrument detection limit and the contract required detection limit. CLP = Contract Laboratory Program. E & E = Ecology and Environment, Inc. EPA = United States Environmental Protection Agency. H = High bias. ID = Identification. J = The analyte was positively identified. The associated numerical value is an estimate. K = Unknown bias. L = Low bias, mg/kg = Milligrams per kilogram. MS = Mill soil. NU = Not utilized. SS = Surface soil. SZ = Sierra Zinc Mine/Mill. TAL = Target Analyte List. TP = Tailings pile. U = The analyte was not detected. The associated numerical value is the contract required detection limit. WP = Waste Rock Pile. 6-114 Page 5 of 5 ------- Table 6-19 ELECTRIC POINT MINE/MILL SURFACE SOIL SAMPLES ANALYTICAL RESULTS SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID 01254185 01254186 01254187 01254191 01254192 01254193 01254194 01254195 CLP Inorganic ID MJ0GH4 MJ0GH5 MJ0GH6 MJ0GJ0 MJ0GJ1 MJ0GJ2 MJ0GJ3 MJ0GJ4 CLP Organic ID NU NU NU NU NU NU NU NU E & E Sample ID NU NU NU NU NU NU NU NU Station Location EPWP01SS EPWP02SS EPWP03SS EPWP04SS EPWP05SS EPTP01SS EPTP02SS EPTP03SS Sample Depth (inches) 0-6 0-6 0-6 0-6 0-6 0-6 0-6 0-6 Description Background Waste Rock Pile Tailings Pile TAL Metals (mg/kg) Aluminum 18100 1740 JL 1680 JL 978 JL 4180 JL 2520 JL 3150 JL 7240 JL 5140 JL Arsenic 68.2 9.4 JH 9.4 JH 9.0 JH 27.7 JH 12.6 JH 19.6 JH 36.6 JH 14.6 JH Barium 548 12.9 IB 14.2 JB 11.7 JB 12.3 JB 12.1 JB 11.1 JB 38.7 JB 28.2 JB Beryllium 0.89 JB (1.06 SQL) 0.29 JB 0.30 JB 0.36 JB U. 0.51 JB 0.81 JB L5 0.79 JB Cadmium 7.8 7.6 JL 8.0 JL 6.5 JL 17.2 JL 10.5 JL 13.0 JL 25.0 JL 8.7 JL Calcium 118000 144000 JL 146000 JL 143000 JL 42400 JL 77100 JL 67600 JL 22400 JL 72900 JL Chromium 29.0 5.0 JL 4.9 JL 8.2 JL 12.9 JL 7.8 JL 10.4 JL 15.7 JL 15.4 JL Cobalt 8.6 IB (63 SQL) 1.3 JB 1.4 JB 1.5 JB 2.3 JB 2.5 JB 2.1 JB 7.8 JB 4.5 JB Copper 55.2 7.3 JL 8.3 JL 7.5 JL 18.0 JL 9.8 JL 14.4 JL 26.3 JL 13.6 JL Iron 25200 26500 JL 28000 JL 30700 JL 140000 JL 57600 JL 111000 JL 161000 JL 63900 JL Lead 183 8110 14000 4490 50100 29300 26000 23700 15800 Magnesium 17900 94900 JL 95800 JL 94300 JL 26700 JL 49000 JL 42300 JL 13300 JL 44900 JL Manganese 1370 753 JL 794 JL 871 JL 1540 JL 857 JL 853 JL 4810 JL 1530 JL Mercury 0.06 JB (0.11 SQL) 0.28 0.42 0.45 0.31 0.20 0.28 0.69 0.14 Nickel 58.4 8.6 JL 8.9 JL 14.0 JL 34.0 JL 19.0 JL 25.0 JL 48.6 JL 28.6 JL Potassium 11660 101 JB 91.7 JB 53.9 JB 88.9 JB 83.0 JB 85.1 JB 238 JB 307 JB Selenium 1.5 JL R R R R R R R R Silver 6.7 0.32 JB 0.24 JB 0.31 JB 2.3 1.3 JB 1.7 JB 3.7 1.3 JB Thallium 1.4 U 1.7 JB 1.1 JB 1.9 JB 10.1 3.7 7.4 17.6 5.6 Vanadium 51.2 19.4 JL 17.6 JL 23.1 JL 30.6 JL 17.5 JL 25.7 JL 57.3 JL 33.2 JL Zinc 835 2000 JK 2360 JK 1180 JK 33800 JK 13300 JK 12000 JK 22000 JK 6030 JK 6-115 Page 1 of 3 ------- Table 6-19 ELECTRIC POINT MINE/MILL SURFACE SOIL SAMPLES ANALYTICAL RESULTS SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID 01254188 01254189 01254190 CLP Inorganic ID MJ0GH7 MJ0GH8 MJ0GH9 CLP Organic ID NU NU NU E & E Sample ID NU NU NU Station Location EPMS01SS EPMS03SS EPMS04SS Sample Depth (inches) 0-6 0-6 0-6 Description Background Mill Soil TAL Metals (mg/kg) Aluminum 18100 2940 JL 2590 JL 2920 JL Arsenic 68.2 26.1 JH 21.7 JH 13.7 JH Barium 548 19.6 JB 18.5 JB 17.4 JB Beryllium 0.89 IB 1.1 1.1 JB 0.56 JB (1.06 SQL) Cadmium 7.8 6.8 JL 5.4 JL 6.4 JL Calcium 118000 45900 JL 62000 JL 86800 JL Chromium 29.0 11.3 JL 5.4 JL 11.2 JL Cobalt 8.6 JB 1.5 JB 0.75 JB 2.7 JB (63 SQL) Copper 55.2 17.1 JL 13.7 JL 10.5 JL Iron 25200 113000 JL 88400 JL 61700 JL Lead 183 94500 11200 97800 Magnesium 17900 28400 JL 38500 JL 51500 JL Manganese 1370 1510 JL 1430 JL 1170 JL Mercury 0.06 IB 0.27 0.16 0.16 (0.11 SQL) Nickel 58.4 18.9 JL 15.5 JL 14.7 JL Potassium 11660 113 JB 92.0 JB 154 JB Selenium 1.5 JL R R R Silver 6.7 2.2 JB 1.5 JB 1.5 JB Thallium 1.4 U 7.5 6.3 3.3 Vanadium 51.2 50.2 JL 39.3 JL 26.6 JL Zinc 835 5850 JK 10600 JK 5080 JK 6-116 Page 2 of 3 ------- Note: Bold type indicates sample concentration is above the detection limit. Underlined type indicates the sample results is significant as defined in Section 5. Key: B = The reported concentration is between the instrument detection limit and the contract required detection limit. CLP = Contract Laboratory Program. E & E = Ecology and Environment, Inc. EP = Electric Point Mine/Mill. EPA = United States Environmental Protection Agency. H = High bias. ID = Identification. J = The analyte was positively identified. The associated numerical value is an estimate. K = Unknown bias. L = Low bias. mg/kg = Milligrams per kilogram. MS = Mill soil. NU = Not utilized. R = The data are unusable for all purposes. SQL = Sample quantitation limit. SS = Surface soil. TAL = Target Analyte List. TP = Tailings pile. U = The analyte was not detected. The associated numerical value is the contract required detection limit. WP = Waste Rock Pile. 6-117 Page 3 of 3 ------- Table 6-20 GLADSTONE MINE/MILL SURFACE SOIL SAMPLES ANALYTICAL RESULTS SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID 01254179 01254180 01254181 01254182 01254183 01254184 CLP Inorganic ID MJ0GG8 MJ0GG9 MJ0GH0 MJ0GH1 MJ0GH2 MJ0GH3 CLP Organic ID NU NU NU NU NU NU E & E Samnle TD Nil Nil NU NU NU NU Location ID GLTP01SS GLTP02SS GLTP03SS GLMS01SS GLMS02SS GLMS03SS Sample Depth (inches) 0-6 0-6 0-6 0-6 0-6 0-6 Description Background Tailings Pile Mill Soil TAL Metals (mg/kg) Aluminum 18100 2370 JL 2660 JL 4270 JL 4410 JL 3600 JL 5950 JL Antimony 1.5 IB (15.1 SQL) 17.7 JL 8.7 IB 3.9 IB 1.3 IB 2.1 IB 1.2 IB Arsenic 68.2 65.4 JH 55.9 JH 41.3 JH 21.6 JH 19.8 JH 22.4 JH Barium 548 9.7 IB 14.0 IB 33.9 IB 29.3 IB 20.3 IB 45.9 Beryllium 0.48 IB (6.3 SQL) 2.1 2.7 1.7 1.2 1.2 IB 1.4 Cadmium 7.8 14.9 JL 9.2 JL 7.7 JL 6.4 JL 7.9 JL 5.4 JL Calcium 118000 2250 JL 2920 JL 60300 JL 55800 JL 48200 JL 52900 JL Chromium 29.0 11.8 JL 11.3 JL 8.5 JL 7.5 JL 8.1 JL 7.6 JL Cobalt 8.6 IB (63 SQL) 0.29 U 0.28 U 1.0 IB 1.9 IB 1.5 IB 2.4 IB Copper 55.2 47.2 JL 38.6 JL 23.9 JL 15.6 JL 16.1 JL 17.0 JL Iron 25200 367000 JL 247000 JL 153000 JL 86300 JL 84800 JL 82600 JL Lead 183 94000 90400 27100 35200 20300 22600 Magnesium 17900 1150 IB 1600 JL 36400 JL 33700 JL 29000 JL 32500 JL Manganese 1370 2510 JL 3180 JL 2210 JL 2050 JL 1910 JL 1880 JL Mercury 0.06 IB (0.11 SQL) 0.28 0.30 0.19 0.25 0.20 0.11 IB Nickel 58.4 28.6 JL 28.3 JL 22.5 JL 18.6 JL 18.4 JL 19.2 JL Potassium 11660 75.9 IB 124 IB 221 IB 215 IB 305 IB 491 IB Selenium 1.5 JL R R R R R R Silver 6.7 6.2 5.3 1.9 IB 1.6 IB 1.6 IB 1.5 IB Thallium 1.4 U 23.5 21.2 11.3 6.0 7.4 4.6 Vanadium 51.2 78.7 JL 73.5 JL 57.2 JL 48.3 JL 46.6 JL 48.0 JL Zinc 835 10500 JK 9880 JK 6560 JK 6370 JK 6790 JK 6020 JK Note: Bold type indicates sample concentration is above the detection limit. Underlined type indicates the sample results is significant as defined in Section 5. Page 1 of 2 6-118 ------- Key: B = The reported concentration is between the instrument detection limit and the contract required detection limit. CLP = Contract Laboratory Program. E & E = Ecology and Environment, Inc. EPA = United States Environmental Protection Agency. GL = Gladstone Mine/Mill. H = High bias. ID = Identification. J = The analyte was positively identified. The associated numerical value is an estimate. K = Unknown bias. L = Low bias. mg/kg = Milligrams per kilogram. MS = Mill soil. NU = Not utilized. R = The data are unusable for all purposes. SQL = sample quantitation limit. SS = Surface soil. TAL = Target Analyte List. TP = Tailings pile. U = The analyte was not detected. The associated numerical value is the contract required detection limit. 6-119 Page 2 of 2 ------- Table 6-21 RED TOP MINE SURFACE SOIL SAMPLES ANALYTICAL RESULTS SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID 01254153 01254154 01254155 CLP Inorganic ID MJ0GE2 MJ0GE3 MJ0GE4 CLP Organic ID NU NU NU E & E Sample ID NU NU NU Location ID RDWP01SS RDWP02SS RDWP03SS Sample Depth (inches) 0-6 0-6 0-6 Description Background Waste Rock Pile TAL Metals (mg/kg) Aluminum 18100 947 1920 6780 Antimony 1.5 JB (15.1 SQL) 1930 81.7 183 Arsenic 68.2 142 JL 155 JL 69.6 JL Barium 548 41.0 JB 41.7 JB 201 Cadmium 7.8 177 JH 111 JH 124 JH Calcium 118000 239000 128000 176000 Chromium 29.0 4.4 8.3 42.2 Cobalt 8.6 JB (63 SQL) 4.3 JB 2.4 JB 9.0 JB Copper 55.2 1080 145 225 Iron 25200 15000 55900 21800 Lead 183 28900 14600 14700 Magnesium 17900 10700 14600 21300 Manganese 1370 9700 14000 14800 Mercury 0.06 JB (0.11 SQL) lii 0.81 0.40 Nickel 58.4 7.6 JB 11.1 43.4 Potassium 11660 363 JB 478 JB 2890 Selenium 1.5 JL 0.73 U 1.9 0.71 U Silver 6.7 58.4 30.4 20.2 Vanadium 51.2 2.1 JB 7.0 JB 22.8 Zinc 835 15600 15700 10700 Note: Bold type indicates sample concentration is above the detection limit. Underlined type indicates the sample results is significant as defined in Section 5. Key: B = The reported concentration is between the instrument detection limit and the contract required detection limit. CLP = Contract Laboratory Program. E & E = Ecology and Environment, Inc. EPA = United States Environmental Protection Agency. H = High bias. ID = Identification. J = The analyte was positively identified. The associated numerical value is an estimate. L = Low bias. mg/kg = Milligrams per kilogram. NU = Not utilized. RD = Red Top Mine. SS = Surface soil. TAL = Target Analyte List. U = The analyte was not detected. The associated numerical value is the contract required detection limit. WP = Waste Rock Pile. 6-120 ------- Table 6-22 ANDERSON CALHOUN MINE/MILL SURFACE SOIL SAMPLES ANALYTICAL RESULTS SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID 01374189 01374170 01374171 01374172 01374168 01374169 01374179 01374180 CLP Inorganic ID MJ0KK7 MJ0KH9 MJ0KJ0 MJ0KJ1 MJ0KH7 MJ0KH8 MJ0KJ8 MJ0KJ9 CLP Inorganic ID NU NU NU NU J0KH1 J0KH2 J0KH6 J0KH7 Station Location ID ANBK02SS ANTP01SS ANTP02SS ANTP03SS ANSS01SS ANSS02SS ANSS03SS ANSS04SS Sample Depth (inches) 0-6 0-6 0-6 0-6 0-6 0-6 0-6 0-6 Description Background Tailings Pile Stained Soil TAL Metals (mg/kg) Aluminum 16400 3890 4030 4180 1780 2520 749 929 Arsenic 8.3 JL 11.4 7.1 6.9 8.7 17.4 5.2 5.0 Barium 470 117000 115000 122000 3330 5350 83600 97800 Cadmium 3.4 6.0 4.7 4.3 124 129 2.9 3.2 Calcium 8210 JK 70500 60400 59200 109000 75000 30600 36500 Chromium 15.6 46.8 34.1 30.9 12.5 76.5 18.3 21.2 Cobalt 6.0 IB (10.9 SQL) 14.2 13.4 14.1 28.3 34.8 10.2 JB 12.1 Copper 11.8 55.0 41.6 39.2 73.8 115 31.0 30.5 Iron 19600 5780 3290 2740 12600 21400 2090 1990 Lead 152 33.3 JK 15.5 JK 11.2 JK 2130 2190 381 JK 25.8 JK Magnesium 4160 12500 5110 4130 68600 42400 2200 2890 Manganese 922 80.2 46.0 43.8 203 220 30.3 30.5 Mercury 0.05 U 0.19 0.13 0.12 0.18 0.35 0.06 JB 0.06 JB Nickel 14.4 90.4 71.8 67.3 12.7 24.5 47.5 53.9 Potassium 1160 297 JB 237 JB 233 JB 238 JB 355 JB 170 JB 186 JB Selenium 0.74 U 4.9 JL 4.0 JL 3.8 JL 1.4 JL 2.9 JL 2.8 JL 3.5 JL Silver 1.3 IB (2.2 SQL) 0.69 U 0.64 U 0.64 U 12.0 14.8 0.64 U 0.64 U Vanadium 27.4 270 183 172 10.6 21.7 94.1 112 Zinc 835 770 534 457 44900 49000 318 339 Note: Bold type indicates sample concentration is above the detection limit. Underlined type indicates the sample results is significant as defined in Section 5. Key: Page 1 of2 6-121 ------- AN = Anderson Calhoun Mine/Mill. B = The reported concentration is between the instrument detection limit and the contract required detection limit. BK = Background. CLP = Contract Laboratory Program. E & E = Ecology and Environment, Inc. EPA = United States Environmental Protection Agency. ID = Identification. J = The analyte was positively identified. The associated numerical value is an estimate. K = Unknown bias. L = Low bias. mg/kg = Milligrams per kilogram. NU = Not utilized. SQL = Sample quantitation limit. SS = Surface soil. SS = Stained soil. TAL = Target Analyte List. TP = Tailings pile. U = The analyte was not detected. The associated numerical value is the contract required detection limit. 6-122 Page 2 of 2 ------- Table 6-23 ANDERSON CALHOUN MINE/MILL SEDIMENT SAMPLES ANALYTICAL RESULTS SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID 01374181 01374173 01374174 01374175 01374178 CLP Inorganic ID MJ0KJ5 MJ0KJ2 MJ0KJ3 MJ0KJ4 MJ0KJ7 CLP Organic ID J0KH3 NU NU NU J0KH5 E & E Sample ID 01090427 NU NU NU 01090429 Station Location ID ANBK01SD ANTP04SD ANTP05SD ANTP06SD ANPP01SD Sample Depth (inches) 0-6 0-6 0-6 0-6 0-6 Description Background T ailings Pile PPE 1 TAL Metals (mg/kg) Aluminum 4070 3620 1810 1720 7580 Arsenic 2.7 JB (3.3 SQL) 10.0 43 M 6.8 JB Barium 101 15400 3980 9080 348 JK Cadmium 1.2 JB (1.7 SQL) 6A 47 M 4.1 JB Calcium 109000 74000 93500 107000 91300 JK Chromium 9.9 55.5 11.1 10 20.8 JK Cobalt 2.6 JB (16.7 SQL) 18.7 0.98 U 1.3 JB 6.9 JB Copper 6.9 B (8.3 SQL) 67.4 30.7 49.4 23.2 JK Iron 9200 3960 11300 17500 16600 JK Lead 15.3 JK 12.3 JK 317 JK 320 JK 30.4 JK Magnesium 3780 5840 59800 65300 5660 JK Manganese 239 67 186 204 370 JK Mercury 0.08 U 0.17 0.08 U 0.11 u R Nickel 10.8 JB (13.4 SQL) 106 15.5 18.4 25.1 JB Selenium 1.4 JB (1.7 SQL) 6.7 JL 0.6 JB 1.1 JB 10.2 JK Vanadium 15.9 JB (16.7 SQL) 294 16.7 22 19.4 JB Zinc 76.3 723 2150 3250 343 JK Note: Bold type indicates sample concentration is above the detection limit. Underlined type indicates the sample results is significant as defined in Section 5. Key: AN = Anderson Calhoun Mine/Mill. B = The reported concentration is between the instrument detection limit and the contract required detection limit. BK = Background. CLP = Contract Laboratory Program. E & E = Ecology and Environment, Inc. EPA = United States Environmental Protection Agency. ID = Identification. J = The analyte was positively identified. The associated numerical value is an estimate. K = Unknown bias. L = Low bias. mg/kg = Milligrams per kilogram. |J.g/kg = Micrograms per kilogram. NU = Not utilized. PPE = Probable point of entry. R = The data are unusable for all purposes. SD = Sediment. SQL = Sample quantitation limit. TAL = Target Analyte List. TP = Tailings pile. U = The analyte was not detected. The associated numerical value is the contract required detection limit. 6-123 ------- Table 6-24 IROQUOIS MINE SURFACE SOIL SAMPLES ANALYTICAL RESULTS SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID 01254358 01254359 CLP Inorganic ID MJ0FJ7 MJ0FJ8 CLP Organic ID NU NU E & E Sample ID NU NU Location ID IRWP01SS IRWP02SS Sample Depth (inches) 0-6 0-6 Description Background Waste Rock Pile TAL Metals (mg/kg) Aluminum 18100 2300 1080 Antimony 1.5 JB 1.3 JB 1.3 JB (15.1 SQL) Arsenic 68.2 10.8 10.5 Barium 548 37.5 JB 13.1 JB Cadmium 7.8 39.1 33.2 Calcium 118000 161000 155000 Chromium 29.0 3.6 2.1 Cobalt 8.6 JB 1.5 JB 0.62 JB (63 SQL) Copper 55.2 7.4 JL 5.2 JL Iron 25200 7140 7930 Lead 183 277 358 Magnesium 17900 107000 104000 Manganese 1370 277 232 Mercury 0.06 JB 0.49 0.25 (0.11 SQL) Nickel 58.4 5.6 JB 4.7 JB Potassium 11660 360 JB 145 JB Selenium 1.5 JL 0.72 U 1.4 Silver 6.7 0.40 JB 0.55 JB Vanadium 51.2 12.9 12.6 Zinc 835 12300 10000 Note: Bold type indicates sample concentration is above the detection limit. Underlined type indicates the sample results is significant as defined in Section 5. Key: B = The reported concentration is between the instrument detection limit and the contract required detection limit. CLP = Contract Laboratory Program. E & E = Ecology and Environment, Inc. EPA = United States Environmental Protection Agency. ID = Identification. IR = Iroquois Mine. J = The analyte was positively identified. The associated numerical value is an estimate. L = Low bias. mg/kg = Milligrams per kilogram. NU = Not utilized. SS = Surface soil. TAL = Target Analyte List. U = The analyte was not detected. The associated numerical value is the contract required detection limit. WP = Waste Rock Pile. 6-124 ------- Table 6-25 MELROSE MINE SEDIMENT SAMPLE ANALYTICAL RESULTS SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID 012541551 CLP Inorganic ID MJ0GE0 CLP Organic ID NU E&E Sample ID NU Location ID MLPP01SD Sample Depth (inches) 0-8 Sample Description Background PPE 1 TAL Metals (mg/kg) Aluminum 20200 4690 Arsenic 13.0 25.5 JL Barium 450 142 Cadmium 3.4 22.8 JH Calcium 109000 81300 Chromium 32.3 16.1 Cobalt 11.9 4.4 JB Copper 69.3 38.2 Iron 27900 11900 Lead 124 25.8 Magnesium 33500 4340 Manganese 673 216 Nickel 31.9 77.2 Potassium 3920 JK 606 JB Vanadium 47.4 32.0 Zinc 239 1650 Note: Bold type indicates sample concentration is above the detection limit. Underlined type indicates the sample results is significant as defined in Section 5. Key: B = The reported concentration is between the instrument detection limit and the contract required detection limit. CLP = Contract Laboratory Program. E & E = Ecology and Environment, Inc. EPA = United States Environmental Protection Agency. H = High bias. ID = Identification. J = The analyte was positively identified. The associated numerical value is an estimate. K = Unknown bias. L = Low bias. mg/kg = Milligrams per kilogram. Jitg/kg = Micrograms per kilogram. ML = Melrose Mine. NU = Not utilized. PCBs = Polychlorinated biphenyls. PPE = Probable point of entry. SD = Sediment. TAL = Target Analyte List. PP = Probable point of entry. 6-125 ------- 7. EPA CLP ANALYTICAL RESULTS, SURFACE WATER MIGRATTON/EXPOSUREPATHWAYS, AND TARGETS The following sub-sections describe the surface water migration pathways for the 18 mines/mills that were sampled, tributaries that were sampled, potential targets within the range of influence of these mines/mills (Figures 7-1 through 7-18), and a discussion of sample results evaluated in accordance with criteria described in Section 5.1. Analytical data forms from laboratory analyses are provided in Appendix D. With the exception of the LeRoi/Northport Smelter and Deep Creek Mine, an evaluation of the groundwater migration, soil exposure, and air migration pathways for all mine/mill sites sampled was not conducted as part of this investigation. Additional to an evaluation of the surface water migration pathway, an evaluation of the soil exposure pathway also was conducted as part of the investigations at the LeRoi/Northport Smelter and Deep Creek Mine. Refer to Table 7-1 for alist of PPEs for those sampled mines/mills that contained a PPE. 7.1 DAISY MINE 7.1.1 Surface Water Pathway Description The potential source areas at the Daisy Mine include a tailings pile measuring approximately 150 feet at the base, 30 feet in height with a slope of approximately 35%, and a depth of approximately 45 feet, and a shaft. The shaft measured 10 feet by 10 feet by unknown depth. A wet area originating from the shaft extended south approximately 25 feet. From this source area, it is approximately another 70 feet overlandto Magee Creek (PPE 1; Figure 6-1). From the source area, drainage flows overland approximately 50 feet to the PPE in a ditch. The surface water target distance limit (TDL) continues approximately 0.08 mile in the ditch to an unnamed tributary. The unnamed tributary empties to Magee Creek 2.95 miles downstream. Magee Creek empties into the Columbia River another 2.18 miles downstream. The surface water TDL concludes 9.79 miles downstream in the Columbia River. 10:START-2\01020028\S759 7-1 ------- The unnamed tributary is assumed to be a minimal stream with flow rates less than 10 cfs. Magee Creek is assumed to be a small to moderate stream with flow rates between 10 cfs and 100 cfs. Columbia River at the U.S.-Canada border is 116,500 cfs (USGS2002). The average annual precipitation is 17.20 inches in Colville, Washington (WRCC 2002). The 2-year, 24-hour rainfall event for the area ranges from 1.4 to 2.0 inches (NOAA 1973). Soils in the area of Daisy Mine were mapped as Dehart-Rock outcrop complex, 40 to 65 percent slopes on side slopes and foothills. The Dehart soil is very deep and somewhat excessively drained. The permeability of the soil is moderately rapid, and the available water capacity is low. Runoff is very rapid, and the hazard of water erosion is very high. (USDA 1982) Approximately 279 upgradient acres of land is expected to drain through the source area at the mine (USGS 1985). The drainage area of sources is approximately 1 acre (USGS 1985). The Daisy Mine does not lie in a flood plain (FEMA 1990). No containment features such as runoff controls exist at the property. 7.2 L- B AR/N O RIH W ES T MAGNESITE 7.2.1 Surface Water Pathway Description The potential source areas at L-Bar/Northwest Magnesite include an above-grade magnesite residue pile, approximately 30 feet deep and 17 acres in area, and inadequate storage of flux bar and flux bar residue. The magnesite pile is adjacent to the Main Ditch which flows into the Colville River approximately 1,000 feet north of the confluence of the magnesite pile and the Main Ditch (Figure 6-3). For the magnesite and flux bar residue pile, the PPE is located in the West Ditch. The overland distance between the source area and the West Ditch is less than 50 feet. The West Ditch flows approximately 0.32 mile to the confluence with the Colville River. The surface water TDL concludes 14.68 miles downstream in the Colville River. The magnesite and flux bar residue pile also used to drain through the Main Ditch, but a water retention system has been installed in the ditch to eliminate discharge to the Colville River. The West Ditch is assumed to be a minimal stream with a flow rate less than 10 cfs. The average annual flow rate of the Colville River near Blue Creek is 110 cfs (USGS 2002). The average annual precipitation is 17.20 inches in Colville, Washington (WRCC 2002). The 2-year, 24-hour rainfall event for the area ranges from 1.4 to 2.0 inches (NOAA 1973). Soils in the area of L-Bar/Northwest Magnesite were mapped as Colville silt loam, drained in bottom lands. The Colville soil is very deep, artificially drained soil. The permeability of the soil is 10:START-2\01020028\S759 7-2 ------- moderately slow, and the available water capacity is very high. Runoff is very slow, and there is no hazard of water erosion. (USDA 1982) Approximately 200,000 upgradient acres of land is expected to drain through the source area at the mine (USGS 1984). The drainage area of sources is approximately 16 acres (USGS 1984). L-Bar/Northwest Magnesite lies within a 100-year flood plain (FEMA 1990). Containment features such as runoff controls exist at the property. 7.3 NORTHWEST ALLOYS 7.3.1 Surface Water Pathway Description The potential source areas at Northwest Alloys include products and byproducts in the production of magnesium, silicon, and ferrosilicon. Waste products generated were either recycled, sold as product or thread, or buried on site. None of the wastes were regarded as hazardous under RCRA but were classified as regulated wastes under Ecology Dangerous Waste Regulations (E & E 1988). There is no overland flow from the site directly into the Colville River due to topography. A potential overland flow exists on the southern portion of the site. The overland flow potentially flows through ditches into Stensgar Creek (PPE 1). Stensgar Creek flows into the Colville River (Figure 6-5). The average annual precipitation is 17.20 inches in Colville, Washington (WRCC 2002). The 2-year, 24-hour rainfall event for the area ranges from 1.4 to 2.0 inches (NOAA 1973). Soils in the area of Northwest Alloys were mapped as Colville silt loam, drained; Donavan loam, 8 to 25 percent slopes; Hodgson silt loam, 3 to 15 percent slopes; Koerling fine sandy loam, 5 to 15 percent slopes; Martella silt loam, 0 to 5 percent slopes; Martella silt loam, 5 to 15 percent slopes; Rock outcrop-Donavan complex, 30 to 65 percent slopes; and Springdale gravelly sandy loam, 0 to 15 percent slopes. The Colville silt loam, drained, is very deep, artificially drained soil on bottom lands. The permeability of the soil is moderately slow, and the available water capacity is very high. Runoff is very slow, and there is no hazard of water erosion. The Donavan loam, 8 to 25 percent slopes is very deep, well drained soil on toe slopes and foot slopes of foothills. The permeability of the soil is moderate, and the available water capacity is high. Runoff is medium, and the hazard of water erosion is moderate. Hodgson silt loam, 3 to 15 percent slopes is very deep, moderately well drained soil on undulating terraces. The permeability of the soil is moderately slow, and the available water capacity is very high. Runoff is slow, and the hazard of water erosion is slight to moderate. Koerling fine sandy loam, 5 to 15 percent slopes is very deep, moderately well drained soil on terraces. The permeability of the soil is moderate, and the available water capacity is very high. Runoff is medium, and the hazard of water 10:START-2\01020028\S759 7-3 ------- erosion is moderate. Martella silt loam, 0 to 15 percent slopes is very deep, moderately well drained soil on terraces. The permeability of the soil is moderately slow, and the available water capacity is very high. Runoff is slow, and the hazard of water erosion is slight to moderate. Martella silt loam, 5 to 15 percent slopes is very deep, moderately well drained soil on undulating terraces. The permeability of the soil is moderately slow, and the available water capacity is very high. Runoff is medium, and the hazard of water erosion is moderate. Rock outcrop-Donavan complex, 30 to 65 percent slopes are on side slopes and foothills. The permeability of the soil is moderate, and the available water capacity is high. Runoff is very rapid, and the hazard of water erosion is very high. Springdale gravelly sandy loam, 0 to 15 percent slopes is very deep, somewhat excessively drained soil on terraces. The permeability of the soil is moderately rapid to the layer of extremely cobbly coarse sand. The available water capacity is low. Runoff is slow, and the hazard of water erosion is slight. (USDA 1982) From the site, drainage enters a ditch, at PPE 1 for the surface water pathway. The ditch flows an estimated 0.33 mile before entering Stensgar Creek. The surface water TDL continues 0.79 mile in Stensgar Creek to the Colville River. The surface water TDL concludes 13.88 miles downstream in the Colville River. Stensgar Creek and the ditch are assumed to be minimal streams with flow rates less than 10 cfs. The average annual flow rate of the Colville River at Blue Creek is 110 cfs (USGS2002). Approximately 100,000 upgradient acres of land is expected to drain through the source area at the mine. The drainage area of sources is approximately 79 acres. (USGS 1984) Northwest Alloys lies within a 100-year flood plain (FEMA 1990). Containment features such as runoff controls exist at the property. 7.4 NAPOLEON MINE/MILL 7.4.1 Surface Water Pathway Description The potential source areas at the Napoleon Mine/Mill include an adit measuring 5 feet by 4 feet located south of the dirt road entrance. The adit discharge flows across the dirt road, down the hillside approximately 120 feet before entering an intermittent creek (PPE 1; Figure 6-7). The surface water TDL continues 0.73 mile in the intermittent creek to Kettle River. Kettle River empties into the Columbia River another 4.39 miles downstream. The surface water TDL concludes 9.88 miles downstream in the Columbia River. 10:START-2\01020028\S759 7-4 ------- The intermittent creek is assumed to be a minimal stream with a flow rate less than 10 cfs. Kettle River is assumed to be a small to moderate stream with an average flow rate between 10 cfs and 100 cfs. Columbia River at the U.S.-Canada border has a flow rate of 116,500 cfs (USGS2002). The average annual precipitation is 19.43 inches in Northport, Washington (WRCC 2002). The 2-year, 24-hour rainfall event for the area ranges from 1.4 to 2.0 inches (NOAA 1973). Soils in the area of Napoleon Mine/Mill were mapped as Aits stony loam, 40 to 65 percent slopes. The soil is very deep, well drained soil on side slopes and foothills. The permeability of the soil is moderately slow, and the available water capacity is very high. Runoff is very rapid, and the hazard of water erosion is very high. (USDA 1982) Approximately 525 upgradient acres of land are expected to drain through a source area at the mine (USGS 1969a). The drainage area of sources is approximately 1 acre (USGS 1969a). The Napoleon Mine/Mill does not lie in a flood plain (FEMA 1990). No containment features such as run off control exist at the property. 7.5 VAN S TO NE MINE/MILL 7.5.1 Surface Water Pathway Description The potential source areas at the Van Stone Mine/Mill include waste rock storage area, two tailings piles, an open pit, buildings, and stained soil areas (Figures 6-9 through 6-11). The waste rock storage area was constructed by end dumping to the south contour from the open pit haul road. The eastern toe of the waste rock storage area consists mostly of larges and is located less than 100 feet from the Northeast Fork of Onion Creek. Slopes on the north side of the haul road consist, in part, of colluvial overburden. Depth and quantity of overburden has yet to be determined. (Beacon 1999) The tailings embankments consist of steep sided erodable tailings sands. In some locations the slopes are heavily rilled, particulary along the south and west faces. (Beacon 1999) A rock-lined spillway and discharge channel has been installed in the extreme northeast corner of the main tailings impoundment to direct any excess accumulated rainwater to the adjacent drainage. Tailings area water quality is monitored every 90 days and is reported to be suitable for discharge under the Water Discharge Permit or can be used for irrigation purposes. A seepage pond is located adjacent to the tailings facility. The open pit, located in the most southern portion of the area is flooded to an elevation of 3,510 feet or 170 feet above the current pit bottom. The rim of the open pit and portions of the top bench 10:START-2\01020028\S759 7-5 ------- currently support vegetation. The water in the open pit is separated from a tributary to the Northeast Fork of Onion Creek by a narrow rock-fill berm. The water level in the open pit is static at 3,510 feet elevation and excess water seeps through this rock-fill to the adjacent creek (PPE 3). (Beacon 1999) Six areas of stained soil were noted on the property. The first area was near a liquid propane tank south of the mill building. The second area was near elevated transformers adjacent to the mill building. At this location, the soil was stained orange and green. The third area was near an AST with secondary containment near the entrance to the mine/mill. The containment area was filled with water and smelled of diesel. No sheen was noted. The secondary containment had been breached. The fourth area was on a concrete pad with staged transformers and stained soil south of the liquid propane tank. The fifth area was near staged 5 5-gallon drums surrounded by stained soil west of the mine/mill buildings and south of the Roundup Powder Company abandoned building. The sixth area was near another AST area surrounded by stained soil located east of the shed and staged 5 5-gallon drums. Several unnamed creeks were located adjacent to the property. One unnamed creek was located south of the mine pit water and could not be accessed due to safety concerns. A second unnamed creek was located at the southwest portion of the old tailings pile (PPE 4). A third unnamed creek was located on Boise Cascade property; no sample was collected due to lack of access. A fourth unnamed creek was located adjacent to the tailings pile near the entrance to the mine/mill (PPE 1 and PPE 2). Excess water from the on-site open pit seeps through the pit berm to an adjacent creek (PPE 3). A number of public, private, and commercial interests access the mine/mill access road. Boise Cascade Forest District maintains an easement over the road to access their timber holdings. Washington Water Power maintains an easement over the road to access a substation located on the mine/mill property. There are residences near the road junction and the DNRuses the road for fire control. (Beacon 1999) For the waste rock and stained soil source areas, drainage flows overland approximately 800 feet to the PPE in an unnamed tributary. The open pit is located immediately adjacent to this PPE. Excess water in the pit seeps through the rock berm to the unnamed tributary. From the PPE, the surface water pathway TDL continues 2.17 miles in the unnamed tributary to the confluence with Onion Creek. Onion Creek empties into the Columbia River another 8.89 miles downstream. The surface water TDL concludes 3.94 miles downstream in the Columbia River. For the tailings pile source area, drainage flows overland approximately 950 feet to the PPE in an unnamed tributary. From the PPE, the surface water pathway TDL continues 0.90 mile to the 10:START-2\01020028\S759 7-6 ------- confluence with Onion Creek. Onion Creek empties into the Columbia River another 8.89 miles downstream. The surface water TDL concludes 5.21 miles downstream in the Columbia River. For the old tailings pile source area, drainage flows overland approximately 950 feet to the PPE in an unnamed tributary. From the PPE, the surface water pathway TDL continues 1.14 miles to the confluence with Onion Creek. Onion Creek empties into the Columbia River another 8.89 miles downstream. The surface water TDL concludes 4.97 miles downstream in the Columbia River. The unnamed tributary is assumed to be a minimal stream with a flow rate less than 10 cfs. Onion Creek is assumed to be a small to moderate stream with flow rates between 10 cfs and 100 cfs. The Columbia River (or Lake Roosevelt) has a flowrate of 116,500 cfs as measured at the U.S.-Canada border (USGS 2002). The average annual precipitation is 17.20 inches in Colville, Washington (WRCC 2002). The 2-year, 24-hour rainfall event for the area ranges from 1.4 to 2.0 inches (NOAA 1973). Soils in the area of Van Stone Mine/Mill were mapped as Merkel stony sandy loam, 40 to 65 percent slopes; Newbell silt loam, 25 to 40 percent slopes; Newbell stony silt loam, 0 to 40 percent slopes; and Newbell-Rock outcrop complex, 15 to 40 percent slopes. The Merkel stony sandy loam, 40 to 65 percent slopes is very deep, moderately well drained soil on terrace escarpments. The permeability of the soil is moderately slow, and the available water capacity is very high. Runoff is very rapid, and the hazard of water erosion is high. The Newbell silt loam, 25 to 40 percent slopes is very deep, well drained soil on foot slopes of foothills. The permeability of the soil is moderate, and the available water capacity is very high. Runoff is rapid, and the hazard of water erosion is high. The Newbell stony silt loam, 0 to 40 percent slopes is very deep, well drained soil on toe slopes and foot slopes of foothills. The permeability of the soil is moderate, and the available water capacity is very high. Runoff is rapid, and the hazard of water erosion is high. The Newbell-Rock outcrop complex, 25 to 40 percent slopes are on foot slopes of foothills. The permeability of the soil is moderate, and the available water capacity is very high. Runoff is rapid, and the hazard of water erosion is high. (USD A 1982) Approximately 470 upgradient acres of land are expected to drain through a source area at the mine (USGS 1969b). The drainage area for the waste rock pile at the site is estimated to be 16 acres (USGS 1969b). The Van Stone Mine/Mill does not lie in a flood plain (FEMA 1990). Containment features such as runoff control exist at the mine pit water at the mine/mill. At present, the steep outer walls of the tailings piles are subject to surface erosion, as evidenced by the rills 10:START-2\01020028\S759 7-7 ------- and gullies developed on the walls. A small berm has been made around the tailings piles to contain eroded material and is effective in containing eroded material. The owner is testing erosion control methods on the tailings pile walls. (Boise Cascade Corporation 1997) 7.6 LERO I/NO RIHPORT SMELTER 7.6.1 Surface Water Pathway Description The potential source areas at the LeRoi/Northport Smelter include an area where slag bricks had been deposited south of the former smelter operations, and a potential former tailings area west of the slag brick area. The former tailings pile area was adjacent to a recently constructed ditch (PPE 1; Figure 6-16). For the tailings pile, drainage enters a constructed ditch, PPE 1 and PPE 2, for the surface water pathway. The overland distance between the tailings pile and the ditch is estimated to be less than 100 feet for PPE 2. The tailings pile extends into the ditch at PPE 1. From the PPEs, the surface water TDL continues approximately 0.05 mile through the constructed ditch, which empties into the Columbia River. The surface water TDL concludes 14.95 miles downstream in the Columbia River. The slag pile is located on the shore of the Columbia River (or Lake Roosevelt). The source area extends into the Columbia River (PPE 3). From PPE 3 the surface water TDL concludes 15 miles downstream in the Columbia River. The Columbia River (or Lake Roosevelt) has a flow rate of 116,500 cfs as measured at the U.S.- Canada border (USGS 2002). The average annual precipitation is 19.43 inches in Northport, Washington (WRCC 2002). The 2-year, 24-hour rainfall event for the area ranges from 1.4 to 2.0 inches (NOAA 1973). Soils in the area of LeRoi/Northport Smelter were mapped as Hagen sandy loam, 0 to 15 percent slopes. The soil is very deep, somewhat excessively drained soil on terraces. The permeability of the soil is moderately rapid in the upper part and very rapid in the lower part. The available water capacity is moderate. Runoff is slow. The hazard of water erosion is slight to moderate, and the hazard of wind erosion is high. (USDA 1982) Approximately one upgradient acre of land is expected to drain through the source area at the mine (USGS 1969c). The drainage area of sources is approximately 33 acres (USGS 1969c). The LeRoi/Northport Smelter lies within a 100-year flood plain (FEMA 1990). No containment features such as runoff control exist at the property. 10:START-2\01020028\S759 7-8 ------- 7.6.2 Soil Exposure Pathway Description A boat launch is located near the slag deposited along the bank of the Columbia River. No residents are located at the site. No school or day care facility is located within 200 feet of the site. There are no worker's within 200 feet of any source on site. The LeRoi/Northport Smelter is located within the city limits of Northport. Based on USGS topographic maps, the START-2 assumes 336 people reside within a 1-mile travel distance from the site. No residents are located at the site. The nearest residence is located 0.22 miles southwest from the site. No school or day care facility is located within 200 feet of the site. There are no workers within 200 feet of any source on site. A city park is located approximately 50 feet from the north boundary of the site. The park is accessed by means of a road on the southwest corner of the site. Access to the site is not restricted. Sources at the site are not fenced. No resources such as commercial agriculture, silviculture, or livestock production or grazing exist on a source area at the site. No wetlands are located on a source area at the site. 7.7 BLACK ROCK MINE/MILL 7.7.1 Surface Water Pathway Description The potential source areas at the Black Rock Mine/Mill include a waste rock pile, shaft, remnants of a mill building, and two sorting bins. No PPEs were identified by the START-2 (Figure 6-19). Although no PPEs exist at the site, the nearest surface water body is Deep Creek, located approximately 950 feet from the waste rock pile and collapsed mill source areas. From this location, the surface water TDL continues 7.07 miles in Deep Creek to the confluence with the Columbia River. The surface water pathway TDL concludes 7.93 miles downstream in the Columbia River. The average annual precipitation is 19.43 inches in Northport, Washington (WRCC 2002). The 2-year, 24-hour rainfall event for the area ranges from 1.4 to 2.0 inches (NOAA 1973). Soils in the area of Black Rock Mine/Mill were mapped as Waits-Rock outcrop complex, 40 to 65 percent slopes. The soils in this complex are very deep and well drained on side slopes of foothills. The permeability of the soil is moderate, and the available water capacity is very high. Runoff is very rapid, and the hazard of water erosion is very high. (USDA 1982) Approximately 660 upgradient acres of land is expected to drain through the source area at the mine (USGS 1992a). The drainage area of sources is approximately 7 acres (USGS 1992a). The Black Rock Mine/Mill does not lie in a flood plain (FEMA 1990). No containment features such as runoff control exist at the property. 10:START-2\01020028\S759 7-9 ------- 7.8 GREAT WES TERN MINE 7.8.1 Surface Water Pathway Description The potential source areas at the Great Western Mine include three waste rock piles, shaft systems, and adits. No PPEs were identified by the START-2 (Figure 6-21). Although, no PPEs exist at the site, the nearest surface water body is an unnamed tributary. From this location, the surface water TDL continues 0.13 mile in the unnamed tributary to the confluence with Deep Creek. Deep Creek empties into the Columbia River another 7.36 miles downstream. The surface water pathway TDL concludes 7.51 miles downstream in the Columbia River. The average annual precipitation is 19.43 inches in Northport, Washington (WRCC 2002). The 2-year, 24-hour rainfall event for the area ranges from 1.4 to 2.0 inches (NOAA 1973). Soils in the area of Great Western Mine were mapped as Waits-Rock outcrop complex, 40 to 65 percent slopes. The soils in this complex are very deep and well drained on side slopes of foothills. The permeability of the soil is moderate, and the available water capacity is very high. Runoff is very rapid, and the hazard of water erosion is very high. (USDA 1982) Approximately 400 upgradient acres of land is expected to drain through the source area at the mine (USGS 1992a). The drainage area of sources is approximately 29 acres (USGS 1992a). The Great Western Mine does not lie in a flood plain (FEMA 1990). No containment features such as runoff control exist at the property. 7.9 LAST CHANCE MINE/MILL 7.9.1 Surface Water Pathway Description The potential source areas at the Last Chance Mine/Mill include two waste rock piles, tailings pile, shaft, adit, and a seep (Figure 6-23). The larger waste rock pile was located north of the north shaft and measured 1,320 feet by 75 feet by 2 feet deep. The smaller waste rock pile located west of the north shaft measured 75 feet by 45 feet by unknown depth. A tailings pile surrounding a former house or office and mill building located west of the waste rock piles measured 600 feet by 105 feet by 3 feet deep. East of the waste rock piles and the abandoned road the ST ART -2 located north and south shafts and an adit upgradient from the north shaft. A seep was located near the mouth of the south shaft which flows into the unnamed creek. Further east of the shafts, an unnamed creek was documented. The adit discharge flowed into the unnamed creek (PPE 1) and continued west past the waste rock piles, through the tailings pile (PPE 2) and infiltrated the ground prior to reaching the Colville-Alladin Northport Road. South of the point of 10:START-2\01020028\S759 7-10 ------- infiltration, a drainage ditch and culvert were observed. The potential flow from the culvert travels by sheet flow into Deep Creek. For the three source areas at the site, the PPEs are located in an unnamed tributary that flows through the site. From the this location, the surface water TDL continues 0.56 mile in the unnamed tributary to the confluence with Deep Creek. Deep Creek empties into the Columbia River 7.36 miles downstream. The surface water TDL concludes 7.08 miles downstream in the Columbia River. The unnamed tributary is assumed to be a minimal stream with a flow rate less than 10 cfs. Deep Creek has an average annual flow rate of 96.0 cfs near Northport. The Columbia River (or Lake Roosevelt) has a flow rate of 116,500 cfs as measured at the U.S.-Canada border. (USGS 2002) The average annual precipitation is 19.43 inches in Northport, Washington (WRCC 2002). The 2-year, 24-hour rainfall event for the area ranges from 1.4 to 2.0 inches (NOAA 1973). Soils in the area of Last Chance Mine/Mill were mapped as Waits-Rock outcrop complex, 40 to 65 percent slopes. The soils in this complex are very deep and well drained on side slopes of foothills. The permeability of the soil is moderate, and the available water capacity is very high. Runoff is very rapid, and the hazard of water erosion is very high. (USDA 1982) Approximately 550 upgradient acres of land is expected to drain through the source area at the mine (USGS 1992a). The drainage area of sources is approximately 12 acres (USGS 1992a). The Last Chance Mine/Mill does not lie in a flood plain (FEMA 1990). No containment features such as runoff control exist at the property. 7.10 DEEP CREEK MINE 7.10.1 Surface Water Pathway Description The potential source areas at the Deep Creek Mine include four waste rock piles, tailings, adit, shaft, garbage and debris pile, and buildings containing transformers (Figure 6-25). The waste rock pile located adjacent to Deep Creek measured 20 feet by 20 feet by 5 feet deep. There could be potential overland flow from the waste rock pile to Deep Creek (PPE 1). The flow of Deep Creek was estimated by the START-2 at 100 cfs. The waste rock pile located adjacent to the main road measured 60 feet by 20 feet by 10 feet deep. The waste rock pile located west of the pad with power tower and fence measured 100 feet by 30 feet by 10 feet deep. The waste rock pile located near the adit measured 40 feet by 20 feet by 5 feet deep. The roads on the mine property were comprised of waste rock. The entrance road measured 700 feet by 20 feet by 2 feet deep. The road heading south to the adit measured 400 feet by 15 feet by 2 feet deep and also consisted of tailings. Tailings were found 10:START-2\01020028\S759 7-11 ------- scattered throughout the mine area. Concentrated areas were located in two wet areas (one on the south end of the property near the adit measuring 15 feet by 15 feet and one south of the main entrance road measuring 30 feet by 30 feet) and north and west of the waste rock pile adjacent to the entrance road. A swampy area was located south of the gated entrance and measured 150 feet by 100 feet. There could be potential flow from this area to Deep Creek (PPE 2). The pad with power tower and fence measured 25 feet by 40 feet. A garbage and debris pile was located adjacent to the main road and measured 50 feet by 20 feet by 5 feet deep. West of the garbage and debris pile was an assay building measuring 20 feet by 20 feet. Further west and north four buildings were identified. Building 1 measured 50 feet by 40 feet and contained a winch and four small transformers. Building 2 measured 100 feet by 45 feet and contained two small transformers, motor and pumps, and a foundation. Building 3 measured 40 feet by 40 feet. Building 4 measured 30 feet by 30 feet. Other features on the south end of the property include a concrete pad, a shaft, and a pond. The concrete pad measured 15 feet by 20 feet. The adit measured 4 feet by 3 feet by unknown depth. The adit was not flowing; however, standing water was present. The shaft measured 5 feet by 5 feet by approximately 800 feet deep. The pond measured 20 feet by 20 feet by 5 feet deep. For the waste rock piles, the nearest PPE is located at Deep Creek, approximately 50 feet overland from a source area. The surface water TDL begins in Deep Creek and continues for 7.7 miles until Deep Creek empties into the Columbia River. The surface water TDL concludes 7.3 miles downstream in the Columbia River. For the tailings piles and adit, the nearest PPE is located at Deep Creek, approximately 175 feet overland from a source area. The surface water TDL begins in Deep Creek and continues for 7.7 miles until Deep Creek empties into the Columbia River. The surface water TDL concludes 7.3 miles downstream in the Columbia River. Deep Creek has an average annual flow rate of 96.0 cfs near Northport. The Columbia River (or Lake Roosevelt) has a flowrate of 116,500 cfs as measured at the U.S.-Canada border. (USGS 2002) The average annual precipitation is 19.43 inches in Northport, Washington (WRCC 2002). The 2-year, 24-hour rainfall event for the area ranges from 1.4 to 2.0 inches (NOAA 1973). Soils in the area of Deep Creek Mine were mapped as Rock outcrop-Maki complex, 30 to 65 percent slopes. The soils in this complex are on side slopes of foothills. The permeability of the soil is moderate, and the available water capacity is low. Runoff is very rapid, and the hazard of water erosion is very high. (USDA 1982) 10:START-2\01020028\S759 7-12 ------- Approximately 170 upgradient acres of land is expected to drain through the source area at the mine (USGS 1992a). The drainage area of sources is approximately 5 acres (USGS 1992a). The Deep Creek Mine lies within a 100-year flood plain (FEMA 1990). No containment features such as runoff control exist at the property. 7.10.2 Soil Exposure Pathway Description A residence is located to the east of the mine and outside of the gated area. The average number of persons per household in Stevens County is 2.64 (USBC 2000). No school or day care facility is located within 200 feet of the site. There are no worker's within 200 feet of any source on site. Based on USGS topographic maps, the START -2 assumes no other population within a 1- mile travel distance from the site. No resources such as commercial agriculture, silviculture, or livestock production or grazing exist on a source area at the site. No wetlands are located on a source area at the site. Most sources at the site are not fenced. 7.11 COPPER KING MINE 7.11.1 Surface Water Pathway Description The potential source areas at the Copper King Mine include two waste rock piles, adits, and a shaft (Figure 6-27). One waste rock pile was located east of Alladin Road and southwest of adit 1 and measured 60 feet by 30 feet by 3 feet deep. Adit 1 measured 5 feet by 10 feet. No flow or drainage was noted by the START-2. Adit 2 was located east of adit 1 and measured 5 feet by 10 feet. Adit 2 drainage flowed approximately 75 feet southwest before infiltrating the ground. There is a potential that during heavy flow adit 2 discharge could reach Deep Creek (PPE 1). A retention area was documented where the adit discharge infiltrates the ground measuring 5 feet by 1 feet by 1 feet deep. The retention area was composed of small logs and plastic sheeting which was estimated to retain approximately 15 gallons. A hose was noted south of the retention area extending southwest for approximately 20 feet. To the east of adit 2 the START-2 identified a second waste rock pile and shaft. The waste rock pile measured 75 feet by 120 feet by 6 feet deep. The shaft was surrounded by the waste rock and measured 15 feet by 20 feet by unknown depth. Standing water was noted. For the waste rock piles and adit 2, drainage will flow overland approximately 475 feet to the PPE at the South Fork of Deep Creek. The surface water TDL begins in the South Fork of Deep Creek 10:START-2\01020028\S759 7-13 ------- and continues for 4.1 miles until the South Fork of Deep Creek empties into Deep Creek. The surface water TDL concludes 10.9 miles downstream in Deep Creek. The South Fork of Deep Creek is assumed to be a small to moderate stream with an average flow rate between 10 cfs and 100 cfs. Deep Creek has an average annual flow rate of 96.0 cfs near Northport (USGS2002). The average annual precipitation is 17.20 inches in Colville, Washington (WRCC 2002). The 2-year, 24-hour rainfall event for the area ranges from 1.4 to 2.0 inches (NOAA 1973). Soil in the area of Copper King Mine was mapped as Aits stony loam, 40 to 65 percent slopes. The soil is very deep, well drained soil on side slopes and foothills. The permeability of the soil is moderately slow, and the available water capacity is very high. Runoff is very rapid, and the hazard of water erosion is very high. (USDA 1982) Approximately 130 upgradient acres of land is expected to drain through the source area at the mine (USGS 1992a). The drainage area of sources is approximately 3 acres (USGS 1992a). The Copper King Mine lies within a 100-year flood plain (FEMA 1990). No containment features such as runoff control exist at the property. 7.12 SIERRA ZINC MINE/MILL 7.12.1 Surface Water Pathway Description The potential source areas at the Sierra Zinc Mine/Mill include one waste rock pile, tailings pile, mill building, an adit, and areas of contaminated soil (Figure 6-29). The mine/mill area contained one waste rock pile measuring 100 feet by 50 feet by 5 feet deep. North of the waste rock pile was a tailings pile measuring 1,000 feet by 2,100 feet by an estimated 20 feet deep. There could be potential overland flow from the tailings pile to the drainage ditch (PPE 1). The flow of the drainage ditch was estimated by the START-2 to be approximately 0.5 cfs. A mill building was located south of the waste rock and tailings piles measuring 250 feet by 225 feet. Northwest of the mill building an adit was located measuring 2 feet by 2 feet by unknown depth. The discharge was estimated by the START-2 at approximately 0.5 gpm. The adit water flowed north into the forested area. Three residences were located south of the property. For the contaminated soil near the waste rock pile, drainage flows overland approximately 750 feet to the PPE in a ditch. The ditch flows approximately 0.30 mile to the South Fork of Deep Creek. The surface water TDL continues 4.67 miles in the South Fork of Deep Creek to the confluence with Deep Creek. The surface water TDL concludes 10.03 miles downstream in Deep Creek. 10:START-2\01020028\S759 7-14 ------- For the tailings pile, drainage flows overland approximately 350 feet to the PPE in the ditch. The ditch flows approximately 0.30 mile to the South Fork of Deep Creek. The surface water TDL continues 4.67 miles in the South Fork of Deep Creek to the confluence with Deep Creek. The surface water TDL concludes 10.03 miles downstream in Deep Creek. For the contaminated soil near the mill building, drainage flows overland approximately 1,350 feet to the PPE in the ditch. The ditch flows approximately 0.30 mile to the South Fork of Deep Creek. The surface water TDL continues 4.67 miles in the South Fork of Deep Creek to the confluence with Deep Creek. The surface water TDL concludes 10.03 miles downstream in Deep Creek. For the adit, drainage flows north into a forested area. A PPE from this source to surface water was not identified. The ditch is assumed to be an intermittent minimal stream with a flow rate less than 10 cfs. The South Fork of Deep Creek is assumed to be a small to moderate stream with a flow rate between 10 cfs and 100 cfs. The average annual flow rate of Deep Creek near Northport is 96.0 cfs (USGS2002). The average annual precipitation is 17.20 inches in Colville, Washington (WRCC 2002). The 2-year, 24-hour rainfall event for the area ranges from 1.4 to 2.0 inches (NOAA 1973). Soils in the area of Sierra Zinc Mine/Mill were mapped as Aits loam, 25 to 40 percent slopes; Aits stony loam, 40 to 65 percent slopes; Aits-Rock outcrop complex, 0 to 40 percent slopes; Bridgeson silt loam; Eloika very stony silt loam, 25 to 40 percent slopes; Martella silt loam, 0 to 5 percent slopes; Martella silt loam, 5 to 15 percent slopes; and Newbell-Rock outcrop complex, 40 to 65 percent slopes. Aits loam, 25 to 40 percent slopes are very deep, well drained soil on foot slopes of foothills. The permeability of the soil is moderately slow, and the available water capacity is very high. Runoff is rapid, and the hazard of water erosion is high. Aits stony loam, 40 to 65 percent slopes is very deep, well drained soil on side slopes of foothills. The permeability of the soil is moderately slow, and the available water capacity is very high. Runoff is very rapid, and the hazard of water erosion is very high. Aits-Rock outcrop complex, 0 to 40 percent are on toe slopes and foot slopes of foothills. The permeability of the soil is moderately slow, and the available water capacity is very high. Runoff is rapid, and the hazard of water erosion is high. Bridgeson silt loam is very deep, poorly drained soil on bottom lands and low stream terraces. The permeability of the soil is moderately slow, and the available water capacity is very high. Runoff is very slow. This soil is subject to occasional flooding for long periods from February to April. Eloika very stony silt loam, 25 to 40 percent slopes are deep, well drained soil on terrace escarpments. The permeability of the soil is moderate, and the available water capacity is high. Runoff is rapid, and the hazard of water erosion is high. Martella silt loam, 0 to 5 10:START-2\01020028\S759 7-15 ------- percent slopes is very deep, moderately well drained soil on terraces. The permeability of the soil is moderately slow, and the available water capacity is very high. Runoff is slow, and the hazard of water erosion is slight to moderate. Martella silt loam, 5 to 15 percent slopes is very deep, moderately well drained soil on undulating terraces. The permeability of the soil is moderately slow, and the available water capacity is very high. Runoff is medium, and the hazard of water erosion is moderate. Newbell-Rock outcrop complex, 40 to 65 percent slopes are on side slopes of foothills. The permeability of the soil is moderate, and the available water capacity is very high. Runoff is very rapid, and the hazard of water erosion is very high. (USDA 1982) Approximately 95 upgradient acres of land is expected to drain through the source area at the mine (USGS 1992a). The drainage area of sources is approximately 36 acres (USGS 1992a). The Sierra Zinc Mine/Mill does not lie in a flood plain (FEMA 1990). No containment features such as runoff control exist at the property. 7.13 ELECTRIC POINT MINE/MILL 7.13.1 Surface Water Pathway Description The potential source areas at the Electric Point Mine/Mill include two waste rock piles, two collapsed shafts, and collapsed mill building (Figure 6-31). No PPEs were identified by the START-2. Although, no PPEs exist at the site, the nearest surface water body is an unnamed tributary. The unnamed tributary flows 0.59 mile to the confluence with Republican Creek. Republican Creek empties into the North Fork of Deep Creek 2.65 miles downstream. The surface water TDL continues 1.56 miles downstream in the North Fork of Deep Creek to the confluence with Deep Lake. Deep Lake outflows into the North Fork of Deep Creek 1.36 miles from the lake's intake. The North Fork of Deep Creek empties into Deep Creek 2.68 miles downstream. The surface water TDL concludes 6.16 miles downstream in Deep Creek. The average annual precipitation is 19.43 inches in Northport, Washington (WRCC 2002). The 2-year, 24-hour rainfall event for the area ranges from 1.4 to 2.0 inches (NOAA 1973). Soils in the area of Electric Point Mine/Mill were mapped as Belzar-Rock outcrop complex, 40 to 65 percent slopes and Waits-Rock outcrop complex, 40 to 65 percent slopes. Belzar-Rock outcrop complex, 40 to 65 percent slopes are moderately deep and well drained on side slopes of foothills. The permeability of the soil is moderate, and the available water capacity is moderate. Runoff is very rapid, and the hazard of water erosion is very high. Waits-Rock outcrop complex, 40 to 65 percent slopes are very deep and well drained on side slopes and foothills. The permeability of the soil is moderate, and the 10:START-2\01020028\S759 7-16 ------- available water capacity is very high. Runoff is rapid, and the hazard of water erosion is very high. (USD A 1982) Approximately 22 upgradient acres of land is expected to drain through the source area at the mine (USGS 1992b). The drainage area of sources is approximately 20 acres (USGS 1992b). The Electric Point Mine/Mill does not lie in a flood plain (FEMA 1990). No containment features such as runoff control exist at the property. 7.14 GLADS TONE MINE/MILL 7.14.1 Surface Water Pathway Description The potential source areas at the Gladstone Mine/Mill include one waste rock pile, shafts, tailings pile, and potential collapsed mill building (Figure 6-33). No PPEs were identified by the START-2. Although, no PPEs exist at the site, the nearest surface water body is an unnamed tributary. The unnamed tributary flows 0.54 mile to the confluence with the West Fork of Silver Creek. The West Fork of Silver Creek empties into Silver Creek 1.28 miles downstream. The surface water TDL continues 1.95 miles downstream in Silver Creek to the confluence with the North Fork of Deep Creek. The North Fork of Deep Creek empties into Deep Lake 3.38 miles downstream. Deep Lake outflows into the North Fork of Deep Creek 1.36 miles from the lake's intake. The North Fork of Deep Creek empties into Deep Creek 2.68 miles downstream. The surface water TDL concludes 3.81 miles downstream in Deep Creek. The average annual precipitation is 19.43 inches in Northport, Washington (WRCC 2002). The 2-year, 24-hour rainfall event for the area ranges from 1.4 to 2.0 inches (NOAA 1973). Soils in the area of Gladstone Mine/Mill were mapped as Waits-Rock outcrop complex, 40 to 65 percent slopes. The soils in this complex are very deep and well drained on side slopes of foothills. The permeability of the soil is moderate, and the available water capacity is very high. Runoff is very rapid, and the hazard of water erosion is very high. (USDA 1982) Approximately 380 upgradient acres of land is expected to drain through the source area at the mine (USGS 1992b). The drainage area of sources is approximately 1 acre (USGS 1992b). The Gladstone Mine/Mill does not lie in a flood plain (FEMA 1990). No containment features such as runoff control exist at the property. 10:START-2\01020028\S759 7-17 ------- 7.15 RED TOP MINE 7.15.1 Surface Water Pathway Description The potential source areas at the Red Top Mine includes a waste rock pile, portal/shaft, and adit (Figure 6-35). No PPEs were identified by the START-2. Although, no PPEs exist at the site, the nearest surface water body is an unnamed tributary. The unnamed tributary flows 0.42 mile to the confluence with Hartbauer Creek. The surface water TDL continues 1.54 miles in Hartbauer Creek to the confluence with the North Fork of Deep Creek. The North Fork of Deep Creek empties into Deep Lake 4.21 miles downstream. Deep Lake outflows into the North Fork of Deep Creek 1.36 miles from the lake's intake. The North Fork of Deep Creek empties into Deep Creek 2.68 miles downstream. The surface water TDL concludes 4.79 miles downstream in Deep Creek. The average annual precipitation is 19.43 inches in Northport, Washington (WRCC 2002). The 2-year, 24-hour rainfall event for the area ranges from 1.4 to 2.0 inches (NOAA 1973). Soils in the area of Red Top Mine were mapped as Ahren loam, 40 to 65 percent slopes. The soils are deep, well drained on side slopes of foothills. The permeability of the soil is moderately slow, and the available water capacity is very high. Runoff is very rapid, and the hazard of water erosion is very high. (USDA 1982) Approximately 440 upgradient acres of land is expected to drain through the source area at the mine (USGS 1992b). The drainage area of sources is approximately 39 acres (USGS 1992b). The Red Top Mine does not lie in a flood plain (FEMA 1990). No containment features such as runoff control exist at the property. 7.16 ANDERSON CALHOUN MINE/MILL 7.16.1 Surface Water Pathway Description The potential source areas at the Anderson Calhoun Mine/Mill include a tailing pile, evaporation pond, waste rock pile, mine pit, mine building, floatation building, waste rock storage bin, mill building, scattered drums, scattered transformers, and stained soil areas (Figure 6-37). The mine/mill area consisted of a tailings pile measuring 555 feet by 500 feet by unknown depth. The tailings pile was located adjacent to the gated entrance road and on the western portion of the property. A pond is located on the tailings pile. T o the north of the tailings pile, an evaporation pond was noted measuring 105 feet by 50 feet. 10:START-2\01020028\S759 7-18 ------- To the east of the tailings pile a waste rock pile was located underneath the waste rock conveyor belt measuring 120 feet by 80 feet by 20 feet deep. The waste rock conveyor belt was connected to the mine building, the floatation building, and the waste rock storage bin. The mine building measured 25 feet in width by 15 feet in length by 20 feet in height. The conveyor belt attached to the floatation building measured 35 feet in length. The floatation building measured 25 feet in width by 15 feet in length by 10 feet in height. The waste rock storage bin measured 15 feet in width by 15 feet in length by 40 feet in height. The mill building was located north of the mine building and measured 50 feet in width by 75 feet in length by 40 feet in height. The mill building contained staged reagent and unknown drums, floatation tanks, and a crusher. Approximately 100 55-gallon steel drums were staged in the east corner of the mill building. Many of these unmarked drums were punctured with bullets with the contents spilling onto the concrete foundation. The unknown spilled contents were solidified. The concrete floor did not appear to be breached. Tailings were scattered throughout the mill building. A portal measuring 10 feet by 10 feet was located on the western portion of the mill building with a conveyor belt leading into the building. Remnants of a storage shed and two concrete pads were located in between the mine and mill buildings. The storage shed foundation measured 20 feet by 20 feet. Remnants of "Cebar Barite", a white cellulose-type material, was scattered throughout the storage shed foundation and surrounding area including the concrete pads. Five 55-gallon drums were scattered on the storage shed foundation. One concrete pad measuring 40 feet by 10 feet was located directly east of the dilapidated storage shed. Ten 55-gallon drums were staged on palettes. There was no legible documentation on the drums. The second concrete pad was located north of the first concrete pad and measured 10 feet by 20 feet. Scrap wood, steel, and garbage were scattered on both concrete pads. On the north side of the mill building, three areas of scattered drums intermixed with debris and equipment were documented. Stained soil with an oil odor were noted around the drums. Cattle prints were identified in the stained soil. There was a distinct sheen throughout the stained soil area surrounding the drums. Transformers were identified in 6 areas. A substation, heavily vandalized, was also documented. The first area was located east of the dilapidated storage shed and two concrete pads and consisted of a power line with three transformers. The second area was located adjacent to the south side of the mill building and comprised three transformers staged on concrete pads. The concrete was not compromised. The third area was located west of the second area and consisted of a fallen power line with a 10:START-2\01020028\S759 7-19 ------- transformer. The top of the transformer was detached and no staining was noted in the vicinity. The fourth area was located north of the fallen power line and comprised a gated area containing a power line with transformer and 6 transformers staged on concrete. No staining was noted on the concrete or the surrounding soil. The fifth area was located west of the fourth area and consisted of three transformers staged on a concrete pad. No staining was noted on the concrete or the surrounding soil. The sixth area was located to the east of the fourth area and consisted of a power line with a transformer. The substation was located south of the sixth area and east of the third area and consisted of a partially gated area with remnant electrical equipment. On the southern portion of the property and east of the mine/mill entrance, a silo, concrete pad, and mine pit were located. The mine pit was filled with water. A stream flowing south extended the entire length of the mine/mill and onto private farmland. A marshy wetland area was noted on the western portion of the stream and adjacent to the eastern side of the tailings pile and evaporation pond (PPE 1). For the tailings pile source area, drainage flows overland approximately 100 feet to PPE 1. The wetland drains 0.01 mile to an unnamed stream. The unnamed stream empties into the North Fork of Deep Creek 0.11 mile downstream. The surface water TDL continues 4.06 miles downstream in the North Fork of Deep Creek to the confluence with Deep Lake. Deep Lake outflows into the North Fork of Deep Creek 1.36 miles from the lake's intake. The North Fork of Deep Creek empties into Deep Creek 2.68 miles downstream. The surface water TDL concludes 6.78 miles downstream in Deep Creek. For the contaminated soil source areas at the site, drainage flows overland approximately 250 feet to the PPE, located in the unnamed stream. The unnamed stream empties into the North Fork of Deep Creek 0.11 mile downstream. The surface water TDL continues 4.06 miles downstream in the North Fork of Deep Creek to the confluence with Deep Lake. Deep Lake outflows into the North Fork of Deep Creek 1.36 miles from the lake's intake. The North Fork of Deep Creek empties into Deep Creek 2.68 miles downstream. The surface water TDL concludes 6.79 miles downstream in Deep Creek. For the mine pit, drainage flows overland approximately 200 feet to the PPE, located in an unnamed stream. The unnamed stream empties into the North Fork of Deep Creek 0.2 mile downstream. The surface water TDL continues 4.06 miles downstream in the North Fork of Deep Creek to the confluence with Deep Lake. Deep Lake outflows into the North Fork of Deep Creek 1.36 miles from the lake's intake. The North Fork of Deep Creek empties into Deep Creek 2.68 miles downstream. The surface water TDL concludes 6.7 miles downstream in Deep Creek. 10:START-2\01020028\S759 7-20 ------- The unnamed stream is assumed to be a minimal stream with an average flow rate less than 10 cfs. The North Fork of Deep Creek and Deep Lake are assumed to be small to moderate streams with average flow rates between 10 cfs and 100 cfs. The average flow rate of Deep Creek near Northport is 96.0 cfs (USGS2002). The average annual precipitation is 19.43 inches in Northport, Washington (WRCC 2002). The 2-year, 24-hour rainfall event for the area ranges from 1.4 to 2.0 inches (NOAA 1973). Soils in the area of Anderson Calhoun Mine/Mill were mapped as Saltese muck, drained; Waits loam, 0 to 15 percent slopes; Waits loam, 40 to 65 percent slopes; and Waits-Rock outcrop complex, 40 to 65 percent slopes. Saltese muck, drained, are very deep, artificially drained, organic soil in basins and potholes on bottom lands and along the perimeters of lakes. The permeability of the soil is moderate, and the available water capacity is very high. Runoff is ponded. There is no hazard for soil erosion. Waits loam, 0 to 15 percent slopes are very deep, well drained on toe slopes of foothills. The permeability of the soil is moderate, and the available water capacity is very high. Runoff is slow, and the hazard of water erosion is slight to moderate. Waits loam, 40 to 65 percent slopes are very deep, well drained on side slopes of foothills. The permeability of the soil is moderate, and the available water capacity is very high. Runoff is very rapid, and the hazard for water erosion is very high. Waits-Rock outcrop complex, 40 to 65 percent slopes are very deep and well drained on side slopes of foothills. The permeability of the soil is moderate, and the available water capacity is very high. Runoff is very rapid, and the hazard of water erosion is very high. (USDA 1982) Approximately 660 upgradient acres of land is expected to drain through the source area at the mine (USGS 1992b). The drainage area of sources is approximately 4 acres (USGS 1992b). The Anderson Calhoun Mine/Mill lies within a 100-year flood plain (FEMA 1990). No containment features such as runoff control exist at the property. 7.17 IROQUOIS MINE 7.17.1 Surface Water Pathway Description The potential source areas at the Iroquois Mine include one waste rock pile and an adit (Figure 6-39). No PPEs were identified by the START-2. Although no PPEs exist at the site, the nearest surface water body is an unnamed tributary. The surface water TDL continues 0.69 mile in the unnamed tributary to Hartbauer Creek. Hartbauer Creek empties to the North Fork of Deep Creek 2.34 miles downstream. The North Fork of Deep Creek empties into Deep Lake 4.21 miles downstream. Deep Lake outflows into the North Fork of Deep Creek 10:START-2\01020028\S759 7-21 ------- 1.36 miles from the lake's intake. The North Fork of Deep Creek empties into Deep Creek 2.68 miles downstream. The surface water TDL concludes 3.72 miles downstream in Deep Creek. The average annual precipitation is 19.43 inches in Northport, Washington (WRCC 2002). The 2-year, 24-hour rainfall event for the area ranges from 1.4 to 2.0 inches (NOAA 1973). Soils in the area of Iroquois Mine were mapped as Belzar silt loam, 40 to 65 percent slopes. The soils are moderately deep, well drained on side slopes of foothills. The permeability of the soil is moderate, and the available water capacity is moderate. Runoff is very rapid, and the hazard of water erosion is very high. (USDA 1982) Approximately 870 upgradient acres of land is expected to drain through the source area at the mine (USGS 1992b). The drainage area of sources is approximately 17 acres (USGS 1992b). The Iroquois Mine does not lie in a flood plain (FEMA 1990). No containment features such as runoff control exist at the property. 7.18 MELROSE MINE 7.18.1 Surface Water Pathway Description The potential source area at the Melrose Mine includes an adit (Figure 6-41). The mine area consisted of an adit 5 feet by 10 feet by unknown depth. Moss and algae growth were noted near the mouth of the adit. The adit discharge flowed approximately 40 feet east to an unnamed tributary (PPE 1) that feeds into Tom Bush Creek. The ST ART-2 estimated the flow of the unnamed tributary at 1 gpm. The surface water TDL continues for 0.1 mile in the unnamed tributary to the confluence with Tom Bush Creek. Tom Bush Creek empties into the Columbia River 1.74 miles downstream. The surface water TDL concludes 13.16 miles downstream in the Columbia River. There were no waste rock piles; however, the entry road appeared to be constructed out of waste rock. A building approximately 10 feet by 10 feet by 10 feet was located to the north of the adit and contained test core samples. The average annual precipitation is 19.43 inches in Northport, Washington (WRCC 2002). The 2-year, 24-hour rainfall event for the area ranges from 1.4 to 2.0 inches (NOAA 1973). Soils in the area of Melrose Mine were mapped as Huckleberry silt loam, 15 to 25 percent slopes. The soils are moderately deep, well drained on toe slopes and ridgetops of mountains. The permeability of the soil is moderate, and the available water capacity is high. Runoff is medium, and the hazard of water erosion is moderate. (USDA 1982). 10:START-2\01020028\S759 7-22 ------- Approximately 260 upgradient acres of land is expected to drain through the source area at the mine (USGS 1992c). The drainage area of sources is approximately 3 acres (USGS 1992c). The Melrose Mine does not lie in a flood plain (FEMA 1990). No containment features such as runoff control exist at the mine. 7.19 TRIBUTARIES Tributaries to the upper Columbia River sampled as part of this field effort include unnamed tributary Section 8, Township 32N, Range 37E; unnamed tributary at Clover Leaf Beach Campground; Stranger Creek (west); Hall Creek; Cobbs Creek; unnamed tributary Section 28, Range 37E, Township 33N; unnamed tributary Section 30, Range 37E, Township 33N; unproposed dry tributary; unnamed tributary Section 21, Range 37E, Township 33N; unnamed tributary Section 19, Range 37E, Township 33N; unnamed tributary Section 18, Range 37E, Township 33N; Magee Creek; Jennings Creek; Little Jim Creek; unnamed tributary Section 1, Range 37E, Township 33N; unnamed tributary Section 4, Range 37E, Township 33N; unnamed tributary Section 5, Range 37E, Township 33N; unnamed tributary Section 32, Range 37E, Township 34N; unnamed tributary Section 36, Range 36E, Township 34N; unnamed tributary Section 25, Range 36E, Township 34N; Cheweka Creek; unnamed tributary Section 29, Range 37E, Township 34N (north of Cheweka Creek); unnamed tributary Section 29, Range 37E, Township 34N (NW quarter); unnamed tributary Section 20, Range 37E, Township 34N; Barnaby Creek; Rotter Bay Creek; Quillisascut Creek; unnamed tributary Section 11, Range 36E, Township 34N; unnamed tributary Section 6, Range 37E, Township 34N; Cuba Canyon Creek; unnamed tributary Section 31, Range 37E, Township 35N; La Fleur Creek; unnamed tributary Section 32, Range 37E, Township 36N; unnamed tributary Section 33, Range 37E, Township 36N (SW quarter; drains Nettleton Lake); unnamed tributary Section 33, Range 37E, Township 35N (NW quarter); unproposed dry tributary; unnamed tributary Section 22, Range 37E, Township 35N (south of Bradbury campground); Martin Creek; unnamed tributary Section 15, Range 37E, Township 35N (north of Bradbury campground); Roper Creek; Rickey Creek; Cougar Canyon Creek; Hallam Creek; unnamed ephemeral tributary west of Mingo Creek; Mingo Creek; Colville River; Sherman Creek; unnamed tributary Section 22, Range 37E, Township 36N (SE quarter); unmapped tributary adjacent to TS051; unnamed tributary Section 22, Range 37E, Township 36N (NE quarter); unnamed tributary Section 15, Range 37E, Township 36N (SE quarter, western tributary); unnamed tributary Section 15, Range 37E, Township 36N (SE quarter, eastern tributary); unnamed tributary Section 14, Range 37E, Township 36N (SW quarter); unnamed ephemeral tributary Section 18, Range 38E, Township 36N (SW quarter); Martin Spring Creek; 10:START-2\01020028\S759 7-23 ------- Pingston Creek; Nancy Creek; unnamed ephemeral tributary Section 33, Range 37E, Township 37N; unnamed tributary Section 16, Range 37E, Township 37N (SW quarter); unnamed ephemeral tributary Section 22, Range 37E, Township 37N; unnamed tributary across from Marcus Island Section 23, Range 37E, Township 37N; unnamed ephemeral tributary Section 28, Range 38E, Township 37N; unnamed ephemeral tributary Section 22, Range 38E, Township 37N (SW quarter); unnamed ephemeral tributary Section 22, Range 38E, Township 37N (NW quarter); unnamed spring drainage east of Evans Campground peninsula; Deadman Creek; unnamed ephemeral tributary Section 16, Range 37E, Township 37N (NW quarter); unnamed tributary to Kettle River Arm (drainage pond near Boyds); unnamed ephemeral tributary Section 9, Range 37E, Township 37N (NW quarter, SE quarter); unnamed ephemeral tributary Section 9, Range 37E, Township 37N (NW quarter, NE quarter); unnamed ephemeral tributary Section 4, Range 38E, Township 37N (NE quarter); Matsen Creek; Doyle Creek; Kettle River; China Creek; unnamed tributary south of Snag Cove; unnamed ephemeral tributary Section 36, Range 37E, Township 38N (SW quarter); unnamed ephemeral tributary entering river Section 35, Range 37E, Township 38N (NE quarter); unnamed tributary directly across from Bossburg, Washington; Dilly Lake ephemeral tributary; unnamed ephemeral tributary upstream of Dilly Lake ephemeral tributary; unnamed ephemeral tributary Section 21, Range 38E, Township 38N; unnamed ephemeral tributary Section 22, Range 38E, Township 38N; unnamed ephemeral tributary at North Gorge Campground; unnamed ephemeral tributary Section 17, Range 38E, Township 38N (NW quarter); unnamed ephemeral tributary downstream of Lodgepole Creek, Section 8, Range 38E, Township 38N (NW quarter); Lodgepole Creek; unnamed ephemeral tributary Section 10, Range 38E, Township 38N; Fifteenmile Creek; unnamed ephemeral tributary at Flat Creek; Flat Creek; unnamed ephemeral tributary downstream of China Bar; unnamed ephemeral tributary Section 25, Range 39E, Township 39N (Sw quarter); Crown Creek; Rattlesnake Creek; unnamed ephemeral tributary downstream from Moses Spring Creek; Moses Spring Creek; Onion Creek; unnamed ephemeral tributary Section 10, Range 39E, Township 39N; Squaw Creek; unnamed tributary from nearshore ponds; Fivemile Creek; Bear Creek; Deep Creek; Big Sheep Creek; Quartz Creek; Goodeve Creek; Scriver Creek; unnamed tributary northeast of gaging station; tributary to Tom Bush Creek and Melrose Mine; unnamed tributary to Onion Creek and Van Stone Mine/Mill; unnamed tributary to Onion Creek and Van Stone Mine/Mill; unnamed tributary to Onion Creek and Van Stone Mine/Mill; tributary to Deep Creek and Last Chance Mine/Mill; Deep Creek South Fork; unnamed tributary to Deep Creek; tributary to Tom Bush Creek and Melrose Mine; unnamed tributary to Onion Creek and Van Stone Mine/Mill; and Deep Creek South Fork. 10:START-2\01020028\S759 7-24 ------- The annual stream flow data for the available applicable stations in Stevens County include: 578 cfs for Colville River at Kettle Falls (USGS 2002); 28.0 cfs for Mill Creek at mouth of Colville (USGS 2002); 16.3 cfs for Haller Creek near Arden (USGS 2002); 62.2 cfs for Little Pend Oreille River near Colville (USGS 2002); 110 cfs for Colville River at Blue Creek (USGS 2002); 23.2 for Chewelah Creek at Chewelah (USGS2002); 25.5 cfs for Deer Creek near Valley (USGS 2002); 13.0 cfs for Sheep Creek at Springdale (USGS2002); 2.84 cfs for Sheep Creek at Loon Lake (USGS 2002); 341 cfs for Sheep Creek near Northport (USGS 2002); 74.1 cfs for Sheep Creek near Velvet (USGS 2002); 96.0 cfs for Deep Creek near Northport (USGS 2002); and 116,500 cfs for Columbia River at U.S.-Canada border (USGS 2002). 7.20 TARGETS This section discusses potential target information for the 18 mines that were sampled. There are no schools or day-care facilities within 200 feet of the 18 mine/mill areas that were sampled. Lake Roosevelt and the upper Columbia River are used for hydroelectric power, irrigation, and recreation. The man-made Lake Roosevelt area provides opportunities for boating, fishing, swimming, camping, and hiking (http://www2.thingstodo.com/statesAVA/nationalparks/lakeroosevelt.htm). Surface water intakes are reported to lie within the surface water target distance limit (TDL) for each of the mines/mills sampled. The average number of persons per household in Stevens County is 2.64 (USBC 2000); therefore, the START-2 estimates the following: There are 5.28 persons using surface water from Magee Creek for drinking water within the 15-mile TDL of Daisy Mine; There are 5.28 persons using surface water from the Colville River for drinking water within the 15-mile TDL of L-Bar/Northwest Magnesite; There are no people using surface water for drinking water within the 15-mile TDL of Northwest Alloys; 10:START-2\01020028\S759 7-25 ------- There are 7.92 persons using surface water from the Kettle River and 16.08 persons using surface water from Lake Roosevelt for drinking water within the 15-mile TDL of Napoleon Mine/Mill; There are 10.56 persons using surface water from Onion Creek for drinking water within the 15-mile TDL of Van Stone Mine/Mill; There are 2.64 persons using surface water from Lake Roosevelt for drinking water within the 15-mile TDL of LeRoi/Northport Smelter; There are 21.12 persons using surface water from Deep Creek for drinking water within the 15-mile TDL of Black Rock Mine/Mill; There are 21.12 persons using surface water from Deep Creek for drinking water within the 15-mile TDL of Great Western Mine; There are 21.12 persons using surface water from Deep Creek for drinking water within the 15-mile TDL of Last Chance Mine/Mill; There are 21.12 persons using surface water from Deep Creek for drinking water within the 15-mile TDL of Deep Creek Mine; There are 23.76 persons using surface water from Deep Creek for drinking water within the 15-mile TDL of Copper King Mine; There are 23.76 persons using surface water from Deep Creek for drinking water within the 15-mile TDL of Sierra Zinc Mine/Mill; There are 2.64 persons using surface water from Republican Creek for drinking water, 5.28 persons using surface water from Deep Creek for drinking water, and 15.84 persons using surface water from Deep Lake for drinking water within the 15-mile TDL of Electric Point Mine/Mill; There are 21.12 persons using surface water from Silver Creek for drinking water, 5.28 persons using surface water from Deep Creek for drinking water, and 15.84 persons using surface water from Deep Lake for drinking water within the 15-mile TDL of Gladstone Mine/Mill; There are 2.64 persons using surface water from Hartbauer Creek for drinking water, 5.28 persons using surface water from Deep Creek for drinking water, and 15.84 persons using surface water from Deep Lake for drinking water within the 15-mile TDL of Red Top Mine; There are 15.84 persons using surface water from Deep Creek for drinking water and 15.84 persons using surface water from Deep Lake for drinking water within the 15-mile TDL of Anderson Calhoun Mine/Mill; There are 2.64 persons using surface water from Hartbauer Creek for drinking water, 5.28 persons using surface water from Deep Creek for drinking water, and 15.84 persons using surface water from Deep Lake for drinking water within the 15-mile TDL of Iroquois Mine; and There are 2.64 persons using surface water from Tom Bush Creek for drinking water within the 15-mile TDL of Melrose Mine. (Ecology 2001a) 10:START-2\01020028\S759 7-26 ------- The START-2 expects that surface water will be used within the TDL for irrigation of commercial food or forage crops or for watering of commercial livestock. Lake Roosevelt and its tributaries in the Lake Roosevelt National Recreation Area support a varied fish community that today is considerably different from the native fish community of the early 1900s. The changes over time were caused by the introduction of nonnative species, habitat alterations such as water pollution, the damming of rivers, and reservoir drawdowns. Today, there are possibly 28 native and 12 nonnative species of fish that inhabit recreation area waters. (DOI 2000) Between 1990 and 1996 the number of angler trips to Lake Roosevelt ranged from 171,725 to 594,508 per year. Recreational fishing trips to Lake Roosevelt peaked in 1993 and have been declining since. The decline was partly attributed to the dewatering of boat ramps during the 1996 drawdown that prohibited anglers from accessing much of the reservoir. Walleye, rainbow trout, and kokanee salmon were the fish most often caught and harvested by anglers. (DOI 2000) Data provided by the Lake Roosevelt Fisheries Evaluation Project; a cooperative project amongst the Spokane Tribe of Indians, the Colville Confederated Tribes, and the Washington Department of Fish and Wildlife; to the EPA indicates that over a ten week period from July 13, 2002 to September 20, 2002, 576 fish were caught by anglers from Lake Roosevelt. These fish consisted of 338 walleye, 221 rainbowtrout, and 17 kokanee salmon. (Lee 2002) The State of Washington only tracks sturgeon, salmon, and steelhead in its freshwater sport fishing data. They list that 4 sturgeon were harvested between Grand Coulee Dam and the Canadian border in 1998. No steelhead and salmon are reported (WSDFW 2001). The Spokane Tribe and the Colville Confederated Tribes, and the Washington Department of Fish and Wildlife are the primary agencies directly involved in managing the Lake Roosevelt fisheries. The Spokane Tribe is coordinating the development of a Lake Roosevelt fisheries plan, funded by the Bonneville Power Administration in cooperation with the Washington Department of Fish and Wildlife, the Colville Confederated Tribes, and other involved parties. Two kokanee salmon hatcheries are operated by the Spokane Tribe and the Washington Department of Fish and Wildlife to support the resident fishery in Lake Roosevelt. The hatcheries produce thousands of kokanee for release into Lake Roosevelt annually. The Spokane Tribe also has initiated a program of rearing rainbowtrout at its hatchery for release into the lake. (DOI 2000) In addition to the hatchery operations, there are numerous rainbowtrout pens on Lake Roosevelt. These fish-rearing pens provide thousands of trout annually to support the recreational fishery. The success of this project in providing catchable-size rainbowtrout resulted in its expansion to more than 10:START-2\01020028\S759 7-27 ------- 30 net pens in several locations on Lake Roosevelt by 1995. In addition, some of the net pens are now being used to rear kokanee before release. (DOI 2000) The Lake Roosevelt National Recreation Area is present along the Columbia River from Grand Coulee Dam to nearly the U.S.-Canada border. Six species may inhabit areas in or near the Lake Roosevelt National Recreation Area that are protected by the Endangered Species Act. Of these, gray wolves (Canus lupus), peregrine falcons (Falco peregrinus), and woodland caribou (Rangifer tarandus caribou) were endangered, and the bald eagle (Haliaeetus leucocephalus), bull trout {Salvelinns confluentus), and grizzly bear (Ursus arctos horribilis) were threatened. The Canada lynx (Felis lynx canadensis), a proposed species for listing, may also inhabit lands in or near the Lake Roosevelt National Recreation Area. The Canada lynx is not currently protected under the Endangered Species Act. The state of Washington also listed gray wolves, peregrine falcons, woodland caribou, and grizzly bears as endangered and the bald eagle and Canada lynx as threatened. (DOI 2000) Peregrine nests have been found in the area surrounding the Lake Roosevelt reservoir. Use of the area by peregrines normally occurs during spring and fall migrations. Peregrine falcon foraging and nesting habitats are usually associated with tall cliffs near water. Their diet consists primarily of waterfowl, shorebirds, and passerine species commonly found on and around lakes and streams. (DOI 2000) No confirmed gray wolf sightings have been documented in the Lake Roosevelt National Recreation Area; however, numerous unconfirmed sightings have been reported in some surrounding areas in recent years. (DOI 2000) Between 1987 and 1990, 60 woodland caribou were moved to northern Idaho from British Columbia to help bolster the existing remnant herd. The herd has been augmented as recently as 1998. However, it is unlikely that woodland caribou would be found in the immediate vicinity of the Lake Roosevelt National Recreation Area. Woodland caribou are known to occur in northeastern Washington; however, none have been reported in the national recreation area. Most caribou remain in forested habitats year-round. (DOI 2000) Bald eagles maintain a large overwintering population in the area surrounding the Lake Roosevelt reservoir from November through March annually. More than 21 bald eagle nests are in the vicinity and bald eagles appear to be becoming more productive each year. A maximum of 15 territories has been occupied in any one year. Bald eagle habitat is usually associated with large bodies of water that provide an abundant source of food. (DOI 2000) Bald eagle habitat has been observed on the Columbia River/Lake Roosevelt within the 15-mile TDLs of Napoleon Mine/Mill, Van Stone Mine/Mill, 10:START-2\01020028\S759 7-28 ------- LeRoi/Northport Smelter, Black Rock Mine/Mill, Great Western Mine, Last Chance Mine/Mill, Deep Creek Mine, and Melrose Mine (WSDFW various dates). Although grizzly bears occur in the Selkirk ecosystem in northern Idaho and Washington, population levels are believed to be low. No grizzly bears have been recently reported within the National Recreation Area. (DOI 2000) Bull trout historically occupied a vast geographic area of the Columbia River. T oday the remaining populations are isolated and remnant. Native bull trout have declined significantly in the last 10 years, in part due to predation by and competition with introduced species such as walleye. If bull trout are present, Lake Roosevelt and its tributaries could provide suitable habitat. Bull trout typically migrate from lakes in the fall to spawn in clear streams with flat gradient, uniform flow, and uniform gravel or small cobble. (DOI 2000) Lynx have been seen near the northern end of Lake Roosevelt; however, no evidence of resident populations have been documented. Lynx prefer the density of coniferous forests and swamp areas where their coloring allows them to be camouflaged from their prey. (DOI 2000) In addition to the aforementioned, another 24 animal species of concern to the state of Washington or the United States Fish and Wildlife Service may occur in or near the Lake Roosevelt National Recreation Area. These include the threatened ferruginous hawk (Buteo regalis); the candidates California floater (Anodonta californiensis), Columbia sharp-tail grouse (Tympanuchusphasianellus Columbians), Columbia spotted frog (Rana luteiventris), loggerhead shrike (Lanius ludovicianus), northern goshawk (Accipiter gentilis), Pacific fisher (Martes pennanti pacifica). pale Townsend's big-eared bat (Corynorhinus townsendii pallexcens), and Washington ground squirrel (Spermophilus Washington!). (DOI 2000) No federally-listed, proposed, or candidate plants are known to occur within the Lake Roosevelt National Recreation Area. (DOI 2000) Lake Roosevelt is the largest single geographic feature in the northeastern corner of Washington state. The surrounding countryside is mostly rural except for the small towns in the Kettle Falls and Grand Coulee Dam areas. There are five counties and two Indian reservations that touch upon Lake Roosevelt National Recreation Area. Grain, forestry, lumber, and mining are the principal economic activities of the region. (DOI 2000) North and west of the lake, the country is relatively mountainous and largely forested with a small amount of farmland. Logging and mining dominate the economy. East of the lake, the country is more mountainous than rolling and is a mixture of forest and farmland. Forest products manufacturing 10:START-2\01020028\S759 7-29 ------- dominates the economy. South of the Lake, the topography is generally flatland with low rolling hills. Agriculture is the backbone of the economy, with wheat as the primary crop. Recreational activities, largely fishing, supplement the economy and are potentially significant. (DOI 2000) Lake Roosevelt is one of the major focal points of recreation in a region that boasts an abundance of recreational opportunities. Within a radius of approximately 100 miles from Grand Coulee Dam, there are four national forests, six other major lakes or reservoirs, several smaller reservoirs on the Columbia and Snake rivers, North Cascades National Park, and Lake Chelan National Recreation Area. The national forests have a substantial complementary recreation potential, which consists of smaller lake and stream fishing, camping, hunting, and winter sports. The Grand Coulee Dam itself is a tourist destination that attracts more than 400,000 visitors a year to tour the dam and watch the laser light show. (DOI 2000) According to National Wetland Inventory maps (USFWS various dates): 0.74 linear miles of wetland frontage exists along Lake Roosevelt within the TDL for Daisy Mine; 14.33 linear miles of wetland frontage exists along the Colville River within the TDL for L-Bar/Northwest Magnesite; 14.02 linear miles of wetland frontage exists along the Colville River within the TDL for Northwest Alloys; 1.06 linear miles of wetland frontage exists along the Kettle River Arm and 1.46 linear miles of wetland frontage exists along Lake Roosevelt within the TDL for Napoleon Mine/Mill; 1.79 linear miles of wetland frontage exists along Onion Creek within the TDL for Van Stone Mine/Mill; 0.6 linear miles of wetland frontage exists along Lake Roosevelt within the TDL for LeRoi/Northport Smelter; 3.91 linear miles of wetland frontage exists along Deep Creek within the TDL for Black Rock Mine/Mill; 4.15 linear miles of wetland frontage exists along Deep Creek within the TDL for Great Western Mine; 4.15 linear miles of wetland frontage exists along Deep Creek within the TDL for Last Chance Mine/Mill; 4.55 linear miles of wetland frontage exists along Deep Creek within the TDL for Deep Creek Mine; 10.14 linear miles of wetland frontage exists along Deep Creek within the TDL for Copper King Mine; 10:START-2\01020028\S759 7 - 30 ------- 10.05 linear miles of wetland frontage exists along Deep Creek within the TDL for Sierra Zinc Mine/Mill; 1.25 linear miles of wetland frontage exists along Republican Creek, 5.46 linear miles of wetland frontage exists along Deep Creek, and 0.4 linear mile of wetland frontage exists along Deep Lake within the TDL for Electric Point Mine/Mill; 6.54 linear miles of wetland frontage exists along Deep Creek and 0.4 linear mile of wetland frontage exists along Deep Lake within the TDL for Gladstone Mine/Mill; 0.5 linear mile of wetland frontage exists along Hartbauer Creek, 8.62 linear miles of wetland frontage exists along Deep Creek, and 0.4 linear mile of wetland frontage exists along Deep Lake within the TDL for Red Top Mine; 8.93 linear miles of wetland frontage exists along Deep Creek and 0.4 linear mile of wetland exists along Deep Lake within the TDL for Anderson Calhoun Mine/Mill; 0.5 linear mile of wetland frontage exists along Hartbauer Creek, 7.64 linear miles of wetland frontage exists along Deep Creek, and 0.4 linear mile of wetland frontage exists along Deep Lake within the TDL for Iroquois Mine; and 1.37 linear miles of wetland frontage exists along Lake Roosevelt within the TDL for Melrose Mine. 7.21 SAMPLE LOCATIONS Two sediment samples were collected near L-Bar/Northwest Magnesite to determine whether contaminants from sources at L-Bar/Northwest Magnesite have impacted the West Ditch and the Colville River (Figure 6-4). LBDT01SD was collected in the West Ditch approximately 400 feet south of the confluence with the Colville River. LBPP01SD was collected in the Colville River at the confluence with the West Ditch. Two sediment samples were collected near Northwest Alloys to determine whether contaminants from sources at Northwest Alloys have impacted Stensgar Creek and the Colville River (Figure 6-6). NACK01SD was collected in Stensgar Creek approximately 50 feet east of the confluence of the ditch with Stensgar Creek. NAPP01SD was collected at the confluence of Stensgar Creek with the Colville River. One sediment sample was collected at Deep Creek Mine to determine whether contaminants from the tailings and waste rock piles have impacted Deep Creek (Figure 6-26). DCSD01SD was collected on the west shore of Deep Creek near waste rock pile 1 which drains by sheet flow into Deep Creek. One sediment sample was collected at Anderson Calhoun Mine/Mill to determine whether contaminants from the tailings and waste rock piles have impacted the unnamed creek (Figure 6-38). 10:START-2\01020028\S759 7-31 ------- ANCK01SD was collected at the northern end of the property adjacent to private farmland and downgradient from the tailings and waste rock piles. Samples collected from tributaries by WESTON that are associated with the mines/mills are as follows (Appendix H): Magee Creek, associated with Daisy Mine (TS013); Onion Creek, associated with Van Stone Mine/Mill (TS099); and Deep Creek, associated with Black Rock Mine/Mill, Great Western Mine, Last Chance Mine/Mill, Deep Creek Mine, Copper King Mine, Sierra Zinc Mine/Mill, Electric Point Mine/Mill, and Gladstone Mine (TS105). 7.22 SAMPLE RESULTS L-Bar/Northwest Magnesite. Sample results are summarized in Tables 7-2 and 7-3. No analytes were detected at elevated concentrations in the sediment sample collected from the West Ditch. Lead was detected at an elevated concentration in the sediment sample collected from the Colville River, however, this analyte was not similarly detected in corresponding PPE sediment samples. Northwest Alloys. Sample results are summarized in Tables 7-4 and 7-5. No analytes were detected at elevated concentrations in the sediment samples collected from Stensgar Creek or from the Colville River. Deep Creek Mine. Sample results are summarized in Table 7-6. No analytes were detected at elevated concentrations in the sediment sample collected in Deep Creek. Anderson Calhoun Mine/Mill. Sample results are summarized in Table 7-7. No analytes were detected at elevated concentrations in the sediment sample collected in the unnamed creek. Refer to Appendix H for WESTON's tributary sample results. 10:START-2\01020028\S759 7-32 ------- Table 7-1 PROBABLE POINT OF ENTRY LOCATIONS UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON PROPERTY PPE LOCATION Daisy Mine (Figure 6-2) PPE 1 A wet area originating from the shaft and extending towards Magee Creek. L-Bar/Northwest Magnesite (Figure 6-4) PPE 1 The confluence of the Main Ditch with the Colville River. Northwest Alloys (Figure 6-6) PPE 1 The confluence of the ditch with Stensgar Creek. Napoleon Mine/Mill (Figure 6-8) PPE 1 The confluence of adit discharge and the intermittent creek. Van Stone Mine/Mill (Figures 6-13 and 6-14) PPE 1 The confluence of tailings pile to the fourth unnamed creek near the entrance to the mine/mill. PPE 2 The confluence of tailings pile to the fourth unnamed creek near the entrance to the mine/mill. PPE 3 The confluence of the excess mine pit water that seeps through rock-fill to the adjacent creek. PPE 4 The confluence of the old tailings pile to the second unnamed creek located at the southwest portion of the pile. LeRoi/Northport Smelter (Figure 6-17) PPE 1 The former tailings pile adjacent to a recently constructed ditch. PPE 2 Recently constructed ditch where a former tailing pile potentially was located. PPE 3 The slag pile on the shore of the Columbia River. Last Chance Mine/Mill (Figure 6-22) PPE 1 The adit discharge which flows into the unnamed creek. PPE 2 The adit discharge that continues west past the waste rock piles, through the tailings pile and infiltrates the ground prior to reaching the Colville-Alladin Northport Road. Deep Creek Mine (Figure 6-24) PPE 1 Potential overland flow from the waste rock pile to Deep Creek. PPE 2 A swampy area located south of the gated entrance could flow to Deep Creek. Copper King Mine (Figure 6-26) PPE 1 There is a potential that during heavy flow adit 2 discharge could reach Deep Creek. Sierra Zinc Mine/Mill (Figure 6-28) PPE 1 There could be potential overland flow from the tailings to the drainage ditch. Anderson Calhoun Mine/Mill (Figure 6-36) PPE 1 A marshy wetland area was noted on the western portion of the stream and adjacent to the eastern portion of the tailings pile and evaporation pond. Melrose Mine (Figure 6-40) PPE 1 Adit discharge flows approximately 40 feet east to an unnamed tributary that feeds into Tom Bush Creek. Key: PPE Probable point of entry. 7-33 ------- Table 7-2 L-BAR/NORTHWEST MAGNESITE DITCH SEDIMENT SAMPLES ANALYTICAL RESULTS SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID 01374104 01374101 CLP Inorganic ID MJ0KC4 MJ0KC1 CLP Organic ID J0KC4 J0CK1 E & E Sample ID 01090404 01090401 Station Location LBBK01SD LBDT01SD Sample Depth (inches) 0-8 0-8 Description Background Ditch TAL Metals (mg/kg) Aluminum 20200 18600 Arsenic 12.1 9.4 Barium 450 332 Cadmium 3.4 1.1 IB Calcium 39600 7670 Chromium 32.3 22.4 Cobalt 11.9 7.3 IB Copper 69.3 70.4 Iron 27900 20700 Lead 124 34.7 Magnesium 33500 29000 Manganese 673 388 Mercury 0.10 IB (0.10 SQL) 0.14 U Nickel 31.9 17.9 JB Potassium 3920 JK 13400 JK Selenium 0.7 UJK 12.4 JL Vanadium 47.4 39 Zinc 239 206 Note: Bold type indicates sample concentration is above the detection limit. Underlined type indicates the sample results is significant as defined in Section 5. Key: B = The reported concentration is between the instrument detection limit and the contract required detection 1 BK = Background. CLP = Contract Laboratory Program. DT = Ditch. E & E = Ecology and Environment, Inc. EPA = United States Environmental Protection Agency. ID = Identification. J = The analyte was positively identified. The associated numerical value is an estimate. K = Unknown bias. L = Low bias. LB = L-Bar/Northwest Magnesite. mg/kg = Milligrams per kilogram. SD = Sediment. SQL = Sample quantitation limit. TAL = Target Analyte List. U = The analyte was not detected. The associated numerical value is the contract required detection limit. 7-34 ------- Table 7-3 L-BAR/NORTHWEST MAGNESITE RIVER SEDIMENT SAMPLES ANALYTICAL RESULTS SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID 01374111 01374110 CLP Inorganic ID MJ0KD2 MJ0KD1 CLP Organic ID J0KD2 J0KD1 E & E Sample ID 01090411 01090410 Station Location LBBK02SD LBPP01SD Sample Depth (inches) 0-8 0-8 Description Background Colville River TAL Metals (mg/kg) Aluminum 3960 8500 Arsenic 2.8 5.0 JK Barium 63.0 133 Cadmium 0.05 U 0.07 U Calcium 5740 7610 Chromium 6.8 14.1 Cobalt 4.7 JB 7.0 JB (12.4 SQL) Copper 6.5 12.3 Iron 10200 16800 Lead 4.5 115 Magnesium 3720 6450 Manganese 144 273 Mercury 0.06 U 0.08 U Nickel 7.0 JB 14.1 (9.9 SQL) Potassium 603 IB 1560 JB Selenium 0.84 UJL 1.1 JB Vanadium 10.9 IB 23.0 (12.4 SQL) Zinc 26.5 52.2 Note: Bold type indicates sample concentration is above the detection limit. Underlined type indicates the sample results is significant as defined in Section 5. Key: B = The reported concentration is between the instrument detection limit and the contract required detection limit. BK = Background. CLP = Contract Laboratory Program. E & E = Ecology and Environment, Inc. EPA = United States Environmental Protection Agency. ID = Identification. J = The analyte was positively identified. The associated numerical value is an estimate. K = Unknown bias. L = Low bias. LB = L-Bar/Northwest Magnesite. mg/kg = Milligrams per kilogram. PP = PPE. PPE = Probable point of entry. SD = Sediment. SQL = Sample quantitation limit. TAL = Target Analyte List. U = The analyte was not detected. The associated numerical value is the contract required detection limit. 7-35 ------- Table 7-4 NORTHWEST ALLOYS CREEK SEDIMENT SAMPLES ANALYTICAL RESULTS SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID 01374108 01374106 CLP Inorganic ID MJ0KC8 MJ0KC6 CLP Organic ID J0KC8 J0KC6 E & E Sample ID 01090408 NACK01SD Station Location NABK01SD NACK01SD Sample Depth (inches) 0-8 0-8 Description Background Creek TAL Metals (mg/kg) Aluminum 2080 2490 Arsenic 1.1 UJK 1.9 JB Barium 34.0 IB 41.4 JB (48.8 SQL) Calcium 2730 5590 Chromium 5.4 4.9 Copper 2.8 JB 4.3 JB (6.1 SQL) Iron 5590 6910 Lead 2.0 2.5 Magnesium 1430 1800 Manganese 91.7 105 Nickel 3.6 JB 4.9 JB (9.8 SQL) Potassium 605 JB 423 JB Vanadium 8.9 JB 9.5 JB (12.2 SQL) Zinc 10.8 14.4 Note: Bold type indicates sample concentration is above the detection limit. Key: B = The reported concentration is between the instrument detection limit and the contract required detection BK = Background. CK = Creek. CLP = Contract Laboratory Program. E & E = Ecology and Environment, Inc. EPA = United States Environmental Protection Agency. ID = Identification. J = The analyte was positively identified. The associated numerical value is an estimate. K = Unknown bias. mg/kg = Milligrams per kilogram. NA = Northwest Alloys. SD = Sediment. SQL = Sample quantitation limit. TAL = Target Analyte List. U = The analyte was not detected. The associated numerical value is the contract required detection limit. 7-36 ------- Table 7-5 NORTHWEST ALLOYS RIVER SEDIMENT SAMPLES ANALYTICAL RESULTS SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID 01374109 01374105 CLP Inorganic ID MJ0KC9 MJ0KC5 CLP Organic ID J0CK9 J0KC5 E & E Sample ID 01090409 01090405 Station Location NABK02SD NAPP01SD Sample Depth (inches) 0-8 0-8 Description Background Colville River TAL Metals (mg/kg) Aluminum 13100 10100 Arsenic 4.3 JK 4 JB Barium 205 182 Calcium 4940 8150 Chromium 24.7 14.6 Copper 21.3 JK 16.1 Iron 27900 17500 Lead 13.8 8.5 Magnesium 6940 5070 Manganese 507 364 Nickel 25.4 14.9 JB Potassium 2550 JK 1640 JB Vanadium 36.9 21.6 JB Zinc 78.2 58.2 Note: Bold type indicates sample concentration is above the detection limit. Key: B = The reported concentration is between the instrument detection limit and the contract required detection limit. BK = Background. CLP = Contract Laboratory Program. E & E = Ecology and Environment, Inc. EPA = United States Environmental Protection Agency. ID = Identification. J = The analyte was positively identified. The associated numerical value is an estimate. K = Unknown bias. mg/kg = Milligrams per kilogram. NA = Northwest Alloys. PPE = Probable point of entry. SD = Sediment. SQL = Sample quantitation limit. TAL = Target Analyte List. U = The analyte was not detected. The associated numerical value is the contract required detection limit. 7-37 ------- Table 7-6 DEEP CREEK MINE SEDIMENT SAMPLES ANALYTICAL RESULTS SUMMARY UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID 01254275 CLP Inorganic ID MJ0EQ9 CLP Organic ID NU E & E Sample ID NU Station Location DCSD01SD Sample Depth (inches) 0-6 Description Background Deep Creek TAL Metals (mg/kg) Aluminum 20200 4430 Arsenic 13.0 1.3 U Barium 450 39.6 IB Cadmium 3.4 0.08 U Calcium 109000 9860 Chromium 32.3 7.1 Cobalt 11.9 3 JB Copper 69.3 2.5 IB Iron 27900 8640 Lead 124 5.5 Magnesium 33500 6100 Manganese 673 117 Nickel 31.9 6.1 JB Potassium 3920 JK 818 JB Vanadium 47.4 11 JB Zinc 239 33.2 Note: Bold type indicates sample concentration is above the detection limit. Key: B = The reported concentration is between the instrument detection limit and the contract required detection limit. CLP = Contract Laboratory Program. DC = Deep Creek Mine. E & E = Ecology and Environment, Inc. EPA = United States Environmental Protection Agency. ID = Identification. J = The analyte was positively identified. The associated numerical value is an estimate. K = Unknown bias. mg/kg = Milligrams per kilogram. SD = Sediment. TAL = Target Analyte List. U = The analyte was not detected. The associated numerical value is the contract required detection limit. 7-38 ------- Table 7-7 ANDERSON CALHOUN MINE/MILL SEDIMENT SAMPLES ANALYTICAL RESULTS SUMMARY UPPER COLUMBIA MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA Sample ID 01374177 CLP Inorganic ID MJ0KJ6 CLP Organic ID J0KH4 E & E Sample ID 01090428 Station Location ANCK01SD Sample Depth (inches) 0-8 Description Background Unnamed Creek TAL Metals (mg/kg) Aluminum 20200 9060 JK Arsenic 13.0 13.3 JB Barium 450 8720 JK Cadmium 3.4 6.0 JB Calcium 109000 69200 JK Chromium 32.3 27.8 JK Cobalt 11.9 10.5 JB Copper 69.3 34.9 JB Iron 27900 29200 JK Lead 124 43.0 JK Magnesium 33500 5850 JB Manganese 673 926 JK Mercury 0.10 JB R (0.102 SQL) Nickel 31.9 33.2 JB Potassium 3920 JK 1300 JB Selenium 1.4 JB 12.1 JK (1.7 SQL) Vanadium 47.4 33.9 JB Zinc 239 155 JK Pesticide/PCBs (Hg/kg) Endrin Ketone 4.0 18 U Note: Bold type indicates sample concentration is above the detection limit. Underlined type indicates the sample results is elevated as defined in Section 5. Key: AN = Anderson Calhoun Mine/Mill. B = The reported concentration is between the instrument detection limit and the contract required detection limit. CK = Creek. CLP = Contract Laboratory Program. E & E = Ecology and Environment, Inc. EPA = United States Environmental Protection Agency. ID = Identification. J = The analyte was positively identified. The associated numerical value is an estimate. K = Unknown bias. mg/kg = Milligrams per kilogram. jitg/kg = Micrograms per kilogram. PCBs = Poly chlorinated biphenyls. R = The data are unusable for all purposes. S = Sediment. SQL = Sample quantitation limit. TAL = Target Analyte List. U = The analyte was not detected. The associated numerical value is the contract required detection limit. 7-39 ------- 8. SUMMARY AND CONCLUSIONS In June and September 2001, the ST ART -2 conducted P As and Sis of mines/mills located near the upper Columbia River in Stevens County, Washington. The purpose of the PAs and Sis were to identify and investigate potential sources of contamination to the upper Columbia River. Of the 39 mines/mills visited, sampling was conducted at 18 properties. Sampling was conducted at those mines/mills where potential sources of contamination were identified and potential impacts to receptors via the surface water migration pathway were observed. The PAs and Sis activities involved the collection of samples from potential hazardous substance source areas and from target areas/receptors potentially impacted by contaminant migration. A total of 216 samples submitted for EPA CLP methods of analysis were collected, including background samples but excluding QA samples. The media sampled included surface soil, tailings, waste rock, surface water and sediment. Section 8.1 summarizes the findings and conclusions for those mines/mills that were sampled. This section does not include a discussion for sites that were not sampled. Sampling was not conducted at sites where no contaminant source was observed and/or where no surface water features including overland drainage routes were identified. Recommendations for all sites are presented in Table 8-1. 8.1 FINDINGS AND CONCLUSIONS 8.1.1 Daisy Mine Samples were collected from potential contaminant source areas at the Daisy Mine including a tailings pile and shaft. A PPE sample was also collected. The tailings pile measured 150 feet at the base, 30 feet in height with a slope of approximately 35%, and a depth of approximately 45 feet. The shaft measured 10 feet by 10 feet by unknown depth. A wet area originating from the shaft extended south approximately 25 feet. A depression south of the wet area was noted where potential pooling of water from the shaft would occur which would then flow into the ditch, past the culvert, and into Magee Creek approximately 70 feet (PPE 1). 10:START-2\01020028\S759 8-1 ------- Surface soil samples collected from the tailings pile contained significant concentrations of TAL metals including arsenic (233 mg/kg) and mercury (2.9 mg/kg). Analytes detected in the discharge from the shaft include arsenic (95.3 /ig/L). cadmium (7.1 (A.g/L), lead (5.2 (A.g/L), and zinc (829 (Ag/L). No elevated concentrations of TAL metals were detected in the PPE sample. Based on an evaluation of technical data using the EPA HRS model criteria, no further action under CERCLA is recommended at the Daisy Mine site. 8.1.2 L-Bar/Northwest Magnesite The contaminant sources at L-Bar/Northwest Magnesite includes a magnesite pile, and flux bar and flux bar residue. The magnesite residue pile measures approximately 30 feet deep and 17 acres in area. Past operating practices and inadequate storage of flux bar and flux bar residue have resulted in elevated levels of mostly chloride and ammonia in shallow groundwater and surface water. Most of the materials remaining on the plant have continued to leach salts and ammonia into shallow groundwater and surface water in two ditches. (Ecology 2001) Sediment samples were collected during the Phase I RI from six locations: three in the Main Ditch, two in the West Ditch, and one from the Logan Road ditch south of the property. Review of trace metals analyses shows that barium, manganese, and selenium concentrations in the Main Ditch sediment samples exceeded the concentrations detected in the background sample collected from Logan Road ditch south of the property. Trace metals results from the West Ditch samples were similar to Main Ditch samples in that background concentrations were exceeded for arsenic, barium, copper, manganese, and selenium. Concentrations of these metals were less than 2 times background levels except for selenium, which was approximately 7 times background. (CH2MHill 1998) Sediment samples were collected at two PPEs by the START-2 in the West Ditch. One downstream sediment sample was also collected from the West Ditch and one sediment sample was collected from the Colville River. Samples collected from the West Ditch contained elevated concentrations of TAL metals including selenium (18.0 mg/kg JK). Lead was detected at an elevated concentration in the Colville River sample; however, this analyte was not similarly detected in PPE samples. Based on an evaluation of technical data using the EPA HRS model criteria, further action under CERCLA or other authorities is recommended at the L-Bar/Northwest Magnesite site. A Cleanup Action 10:START-2\01020028\S759 8-2 ------- Plan for the site was approved by Ecology in June 2000 requiring source removal, monitoring, and institutional controls. 8.1.3 Northwest Alloys The plant is contained within gates and hillsides. There is no overland flow from the site directly into the Colville River due to topography. A potential overland flow exists on the western portion of the plant. The overland flow potentially flows through ditches (PPE 1) south towards Stensgar Creek. Stensgar Creek, located south of the plant, maintains brown trout. Stensgar Creek feeds into the Colville River. One PPE sample and two target/receptor samples were collected. Samples collected in the ditch at PPE 1 contained elevated concentrations of arsenic (4.9 mg/kg), copper (18.7 mg/kg), lead (7.5 mg/kg), and zinc (47.9 mg/kg). No elevated concentrations of TAL metals were detected in target/receptor samples. Based on an evaluation of technical data using the EPA HRS model criteria, no further action under CERCLA is recommended at the Northwest Alloys site. However, voluntary cleanup actions currently are being carried out at the site under the Model Toxics Cleanup Authority, Voluntary Cleanup Program administered by Ecology's Industrial Section. 8.1.4 Napoleon Mine/Mill The mine/mill area consisted of an adit measuring 5 feet by 4 feet located south of the dirt road entrance. There was no evidence of tailings or waste rock present on the property. The adit discharge flowed across the dirt road, down the hillside approximately 120 feet before entering an intermittent creek (PPE 1). Iron staining was present on the soil and the dirt road. There was no adit discharge at the time of the visit. One surface water sample from the adit was collected. One PPE sample was also collected. Analytes detected in the discharge from the adit include lead (11.3 /ig/L), and zinc (937 /ig/L). Significant levels of TAL metals were detected in the PPE sample including copper (207 mg/kg) and silver (2.3 mg/kg). Analytical results of samples collected indicate that hazardous substances are migrating to targets/receptors. Based on an evaluation of technical data using the EPA HRS model criteria, no further action under CERCLA is recommended at the Napoleon Mine/Mill site. 10:START-2\01020028\S759 8-3 ------- 8.1.5 Van Stone Mine/Mill Samples were collected from potential contaminant source areas at the Van Stone Mine/Mill including a waste rock pile, two tailings piles, 7 stained soil areas, and mine pit water. Four PPE samples were also collected. Surface soil samples collected from source areas contained significant concentrations of TAL metals including cadmium (940 mg/kg), lead (181,000 mg/kg), mercury (6.0 mg/kg), and zinc (431,000 mg/kg). The PPE samples contained elevated concentrations of TAL metals including cadmium (11.9 mg/kg) and zinc (3,670 mg/kg). In the past, the mine, slurry flume, and tailings piles were likely a source of sediment to streams in the Onion Creek watershed. Based on aerial photo evidence and anecdotal reports from area residents, the slurry flume periodically broke, and the tailings slurry was dumped into the stream north of the old tailings pile for hours at a time before the break was discovered and repaired. In addition, it is reported that the old tailings pile wall was breached at least once in the past, transporting tailings material into the stream. (Boise Cascade Corporation 1997) The newtailings pile is not reported to have had any major erosion occurrences; however, there is a layer of tailings material several feet thick covering the stream valley north of the newtailings pile (Boise Cascade Corporation 1997). At present, the steep outer walls of the tailings piles are subject to surface erosion, as evidenced by the rills and gullies developed on the walls. A small berm has been made around the tailings piles to contain eroded material and is effective in containing eroded material. The owner is testing erosion control methods on the tailings pile walls. (Boise Cascade Corporation 1997) Analytical results of samples collected indicate that hazardous substances are migrating to targets/receptors. Based on an evaluation of technical data using the EPA HRS model criteria, further action under CERCLA or other authorities is recommended at the Van Stone Mine/Mill site. 8.1.6 LeRoi/Northport Smelter Samples were collected from potential contaminant source areas at the LeRoi/Northport Smelter including surface soil west of the former tailings area underneath slag bricks, sediment from slag areas along the Columbia River adjacent to the smelter (PPE 3), and sediment in the western portion of the recently constructed ditch where the former tailings pile was located (PPE 1 and PPE 2). 10:START-2\01020028\S759 8-4 ------- Surface soil samples from source areas contained significant concentrations of TAL metals including arsenic (297 mg/kg JL), cadmium (105 mg/kg), lead (10,500 mg/kg), mercury (0.40 mg/kg), and zinc (5,420 mg/kg). Sediment samples collected from the Columbia River contained elevated concentrations of T AL metals including arsenic (41.4 mg/kg), cadmium (4.9 mg/kg), copper (2,960 mg/kg), lead (845 mg/kg JK), mercury (0.29 mg/kg), and zinc (16,900 mg/kg). The ditch PPE samples contained elevated concentrations of TAL metals including arsenic (39.9 mg/kg JK), cadmium (5.9 mg/kg JK), copper (1,090 mg/kg), lead (887 mg/kg JK), and zinc (223 mg/kg). Analytical results of samples collected indicate that hazardous substances are migrating to targets/receptors. Based on an evaluation of technical data using the EPA HRS model criteria, further action under CERCLA or other authorities is recommended at the LeRoi/Northport Smelter site. 8.1.7 Black Rock Mine/Mill Samples were collected from potential contaminant source areas at the Black Rock Mine/Mill including a waste rock pile and soil near the collapsed mill building. No PPEs were identified by the START-2. Soil samples collected from source areas contained significant concentrations of TAL metals including cadmium (1,630 mg/kg), lead (6,520 mg/kg), mercury (26.4 mg/kg) and zinc (402,000 mg/kg). Based on an evaluation of technical data using the EPA HRS model criteria, no further action under CERCLA is recommended at the Black Rock Mine/Mill site. 8.1.8 Great Western Mine Samples were collected from potential contaminant source areas at the Great Western Mine including two waste rock piles. No PPEs were identified by the START-2. Samples collected from the waste rock piles contained significant concentrations of TAL metals including cadmium (490 mg/kg JL), lead (24,000 mg/kg), mercury (4.3 mg/kg), and zinc (118,000 mg/kg JK). Based on an evaluation of technical data using the EPA HRS model criteria, no further action under CERCLA is recommended at the Great Western Mine site. 10:START-2\01020028\S759 8-5 ------- 8.1.9 Last Chance Mine/Mill Samples were collected from potential contaminant source areas at the Last Chance Mine/Mill including waste rock piles, tailings pile, soil from the former mill building area, and adit discharge. Two PPE samples were also collected. Surface soil samples collected from the waste rock piles, tailings pile, and the former mill building area contained significant concentrations of TAL metals including cadmium (518 mg/kg JH), lead (170,000 mg/kg), mercury (2.7 mg/kg), and zinc (112,000 mg/kg). The PPE samples contained elevated concentrations of TAL metals including cadmium (56.9 mg/kg JH), lead (14,600 mg/kg), mercury (1.2 mg/kg), and zinc (13,400 mg/kg). Analytical results of samples collected indicate that hazardous substances are migrating to targets/receptors. Based on an evaluation of technical data using the EPA HRS model criteria, further action under CERCLA or other authorities is recommended at the Last Chance Mine/Mill site. 8.1.10 Deep Creek Mine Samples were collected from potential contaminant source areas at the Deep Creek Mine including waste rock piles, tailings piles, and adit discharge. One PPE sample was also collected. Surface soil samples collected from the waste rock piles and tailings piles contained significant concentrations of TAL metals including cadmium (425 mg/kg), lead (13,300 mg/kg), mercury (3.2 mg/kg), and zinc (123,000 mg/kg). Analytes detected in the discharge from the adit include lead (12.9 /ig/L), and zinc (558 /ig/L). No elevated concentrations of TAL metals were detected in the PPE sample. Based on an evaluation of technical data using the EPA HRS model criteria, no further action under CERLCA is recommended at the Deep Creek Mine site. 8.1.11 Copper King Mine Samples were collected from potential source areas at the Copper King Mine including waste rock pile and adit discharge. One PPE sample was also collected. Surface soil samples collected from the waste rock pile contained significant concentrations of TAL metals including copper (1,700 mg/kg), selenium (18.9 mg/kg), and thallium (3.7 mg/kg). Analytes detected in the discharge from the adit include lead (17.9 /ig/L), and zinc (180 /ig/L). No elevated concentrations of TAL metals were detected in the PPE sample. 10:START-2\01020028\S759 8-6 ------- Based on an evaluation of technical data using the EPA HRS model criteria, no further action under CERCLA is recommended at the Copper King Mine site. 8.1.12 Sierra Zinc Mine/Mill Samples were collected from potential contaminant source areas at the Sierra Zinc Mine/Mill including waste rock pile, tailings pile area, soil from mill area, and adit discharge. Surface soil samples collected from the waste rock pile and tailings pile area contained significant concentrations of TAL metals including cadmium (130 mg/kg), lead (15,800 mg/kg), mercury (2.7 mg/kg JL), and zinc (33,400 mg/kg). Analytes detected in the discharge from the adit include zinc (292 /ig/L). Based on an evaluation of technical data using the EPA HRS model criteria, no further action under CERCLA is recommended at the Sierra Zinc Mine/Mill site. 8.1.13 Electric Point Mine/Mill Samples were collected from potential contaminant source areas at the Electric Point Mine/Mill including waste rock piles, tailings pond, and soil from the mill area. No PPEs were identified by the START-2. Surface soil samples collected from source areas contained significant concentrations of TAL metals including cadmium (25.0 mg/kg JL), lead (97,800 mg/kg), and zinc (33,800 mg/kg). Based on an evaluation of technical data using the EPA HRS model criteria, no further action under CERCLA is recommended at the Electric Point Mine/Mill site. 8.1.14 Gladstone Mine/Mill Samples were collected from potential contaminant source areas at the Gladstone Mine/Mill including tailings pile and soil from the potential mill area. No PPEs were identified by the START-2. Surface soil samples collected from source areas contained significant concentrations of lead (94,000 mg/kg), mercury (0.30 mg/kg), and zinc (10,500 mg/kg). Based on an evaluation of technical data using the EPA HRS model criteria, no further action under CERCLA is recommended at the Gladstone Mine/Mill site. 10:START-2\01020028\S759 8-7 ------- 8.1.15 Red Top Mine Samples were collected from potential contaminant source areas at the Red Top Mine including a waste rock pile. No PPEs were identified by the START-2. Surface soil samples collected from the waste rock pile contained significant concentrations for cadmium (177 mg/kg JH), lead (28,900 mg/kg), mercury (1.1 mg/kg), and zinc (15,700 mg/kg). Based on an evaluation of technical data using the EPA HRS model criteria, no further action under CERCLA is recommended at the Red Top Mine site. 8.1.16 Anderson Calhoun Mine/Mill Samples were collected from potential contaminant source areas at the Anderson Calhoun Mine/Mill including tailings piles, stained surface soil areas, and mine/mill pit water. One PPE sample was also collected. Surface soil samples collected from the tailings pile and stained soil area contained significant concentrations of TAL metals including cadmium (129 mg/kg), lead (2,190 mg/kg), mercury (0.35 mg/kg), and zinc (49,000 mg/kg). Analytes detected in the mine/mill pit water include lead (192 /ig/L) and zinc (1,480 /ig/L). The PPE sample contained elevated concentrations of TAL metals including arsenic (10.0 mg/kg), cadmium (7.5 mg/kg), lead (320 mg/kg), mercury (0.17 mg/kg), and zinc (3,250 mg/kg). Analytical results of samples collected indicate that hazardous substances are migrating to targets/receptors. Based on an evaluation of technical data using the EPA HRS model criteria, further action under CERCLA or other authorities is recommended at the Anderson Calhoun Mine/Mill site. 8.1.17 Iroquois Mine Samples were collected from potential contaminant source areas at the Iroquois Mine including waste rock pile and adit discharge. No PPEs were identified by the ST ART -2. Surface soil samples collected from the waste rock pile contained significant concentrations of TAL metals including cadmium (39.1 mg/kg), mercury (0.49 mg/kg), and zinc (12,300 mg/kg). Analytes detected in the adit discharge include zinc (583 /ig/L). Based on an evaluation of technical data using the EPA HRS model criteria, no further action under CERCLA is recommended at the Iroquois Mine site. 10:START-2\01020028\S759 8-8 ------- 8.1.18 Melrose Mine Samples were collected from potential contaminant source areas at Melrose Mine including adit discharge. One PPE sample was also collected. Analytes detected in the adit discharge include zinc (433 /ig/L). The PPE sample contained elevated concentrations of TAL metals including cadmium (22.8 mg/kg JH) and zinc (1,650 mg/kg). Analytical results of samples collected indicate that hazardous substances are migrating to targets/receptors. Based on an evaluation of technical data using the EPA HRS model criteria, no further action under CERCLA is recommended at the Melrose Mine site. 10:START-2\01020028\S759 8-9 ------- Table 8-1 CERCLA RECOMMENDATIONS UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA CERCLIS Number Site Name CERCLA Activity Type Recommendation WAN001002371 Daisy Mine Preliminary Assessment/Site Inspection No further action under CERCLA. WAD097824577 L-Bar/Northwest Magnesite Preliminary Assessment/Site Inspection Further action under CERCLA. WAD094626868 Northwest Alloys Preliminary Assessment/Site Inspection No further action under CERCLA. WAN0010023 91 Napoleon Mine/Mill Preliminary Assessment/Site Inspection No further action under CERCLA. WANOO1002374 First Thought Mine Preliminary Assessment No further action under CERCLA. WANOO10023 84 Lottie Mine Preliminary Assessment No further action under CERCLA. WANOO 1002378 HomestakeNo. 1 Mine Preliminary Assessment No further action under CERCLA. WANOO 1002368 Antelope Mine Preliminary Assessment No further action under CERCLA. WANOO 10023 80 Hubbard Mine Preliminary Assessment No further action under CERCLA. WANOO 10023 92 New Leadville Mine Preliminary Assessment No further action under CERCLA. WAN001002395 R.J. Mine Preliminary Assessment No further action under CERCLA. WAD980834808 Van Stone Mine/Mill Preliminary Assessment/Site Inspection Further action under CERCLA. WANOO 1002379 Hope & Twin Cabins Mine Preliminary Assessment No further action under CERCLA. WAN001002398 St. Crispin Mine Preliminary Assessment No further action under CERCLA. WAN001002393 Northport Mill Preliminary Assessment No further action under CERCLA. WAD988507323 LeRoi/Northport Smelter Preliminary Assessment/Site Inspection Further action under CERCLA. WANOO 1002369 Black Rock Mine/Mill Preliminary Assessment/Site Inspection No further action under CERCLA. WANOO 1002377 Great Western Mine Preliminary Assessment/Site Inspection No further action under CERCLA. WASFN1002162 Last Chance Mine/Mill Preliminary Assessment/Site Inspection Further action under CERCLA. WASFN1002161 Deep Creek Mine Preliminary Assessment/Site Inspection No further action under CERCLA. WANOO 1002370 Copper King Mine Preliminary Assessment/Site Inspection No further action under CERCLA. WANOO 10023 96 Sierra Zinc Mine/Mill Preliminary Assessment/Site Inspection No further action under CERCLA. WANOO 10023 87 Magma Mine Preliminary Assessment No further action under CERCLA. WANOO 1002373 Farmer Mine Preliminary Assessment No further action under CERCLA. WAN001002388 Maki Mine Preliminary Assessment No further action under CERCLA. WANOO 1002372 Electric Point Mine/Mill Preliminary Assessment/Site Inspection No further action under CERCLA. WANOO 1002376 Gladstone Mine/Mill Preliminary Assessment/Site Inspection No further action under CERCLA. WANOO 10023 86 Lucky Four Mine Preliminary Assessment No further action under CERCLA. WANOO 10023 94 Red Top Mine Preliminary Assessment/Site Inspection No further action under CERCLA. WANOO 1002309 Anderson Calhoun Mine/Mill Preliminary Assessment/Site Inspection Further action under CERCLA. WAN001002385 Lucile Mine Preliminary Assessment No further action under CERCLA. 8-10 ------- Table 8-1 CERCLA RECOMMENDATIONS UPPER COLUMBIA RIVER MINES AND MILLS PRELIMINARY ASSESSMENTS AND SITE INSPECTIONS STEVENS COUNTY, WASHINGTON EPA CERCLIS Number Site Name CERCLA Activity Type Recommendation WAN001002381 Iroquis Mine Preliminary Assessment/Site Inspection No further action under CERCLA. WAN0010023 97 Silver Queen Mine Preliminary Assessment No further action under CERCLA. WAN001002389 Melrose Mine Preliminary Assessment/Site Inspection No further action under CERCLA. WAN001002383 Lakeview Mine Preliminary Assessment No further action under CERCLA. WAN0010023 82 Jackson Mine Preliminary Assessment No further action under CERCLA. WAN001002375 Frisco-Standard Mine Preliminary Assessment No further action under CERCLA. WANOO10023 90 Myeerah Mine Preliminary Assessment No further action under CERCLA. WAN001002399 United Treasure Mine Preliminary Assessment No further action under CERCLA. Key: CERCLA = Comprehensive Environmental Response, Compensation, and Liability Act of 1980. 8-11 ------- 9. REFERENCES Battien, Pauline, 1998, fifth printing, The Gold Seekers...a 200 Year History of Mining in Washington, Idaho, Montana, and Lower British Columbia, Eastern Washington University Libraries, Statesman-Examiner, Inc., Colville, Washington. Beacon Hill Consultants Ltd. (Beacon), 1999, Reclamation and Closure Plan, prepared for Mano River Resources Inc. Boise Cascade Corporation, March 1997, Onion Creek Watershed Analysis, Kettle Falls, Washington. 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Gregory, Guy, 2000a, Findings of Sampling Conducted by the Washington State Department of Ecology at the LeRoi Company Smelter in 1997. , 2000b, Washington State Department of Ecology, Spokane, Washington, telephone conversation regarding groundwater investigation at LeRoi Smelter with Monica Tonel, United States Environmental Protection Agency, Seattle, Washington. 10:START-2\01020028\S759 9-1 ------- Heritage, B., 1981, (Long-time resident ofNorthport) "Bill Heritage Story." Northport Pioneers, pp. 185-194. LeRoi site history. Huntting, M. T., 1956, Inventory of Washington Minerals-Part II, Metallic Minerals: Washington Division of Mines and Geology Bulletin 37. Jenkins, O. P., 1924, Lead Deposits of Pend Oreille and Stevens Counties, Washington: Washington Division of Geology Bulletin 31. Lee, Chuck, October 3, 2002, Spokane Tribe of Indians, Lake Roosevelt Weekly Angler Reports for July 13, 2002 through September 20, 2002, data obtained from the Lake Roosevelt Fisheries Evaluation Project. Mills, J. W., 1977, Zinc and Lead Ore Deposits in Carbonate Rocks, Stevens County, Washington: Washington Division of Geology and Earth Resources Bulletin 70. National Oceanic and Atmospheric Administration (NOAA), 1973, Precipitation Frequency Atlas of the Western United States Volume IX - Washington, Silver Spring, Maryland. Northwest Alloys, Inc., 2001, NWAlloys Addy Plant NW Quadrant Area Investigation and Removal Action Summary. , 1992, NW Alloys Inc. Hazardous Waste Minimization Plan. Passmore, Gary, August 2, 2000, Director, Office of Environmental Trust, Confederated Tribes of the Colville Reservation, Nespelem, Washington, correspondence to Monica Tonel, United States Environmental Protection Agency, Seattle, Washington. Pepper, Terry, December 5, 2001, Highwood Resources Ltd., Morrison, Colorado, facsimile regarding Northport Mill sent to Monica Tonel, United States Environmental Protection Agency, Seattle, Washington. Raines, Mary, et. al., March 1997, Onion Creek Watershed Analysis. Ross, Jim, July, 12, 2001, Washington State Department of Ecology, Manchester Environmental Laboratory, Port Orchard, Washington, "Metals Quality Assurance memo for FDR Sediment Toxicity study", to Dave Serdar, Washington State Department of Ecology. Science Applications International Corp. (SAIC), 1997, X-Ray Fluorescence Investigation of Soils for LeRoi Smelter Site, prepared for the Washington State Department of Ecology, June 1997, Ecology Contract No. C9300048, SAI018. URS Consultants, Inc. (URS), October 1993, Site Inspection Report for LeRoi Company Smelter, prepared for the United States Environmental Protection Agency. United States Department of the Interior (DOI), 2000, General Management Plan; Lake Roosevelt National Recreation Area, Planning and Design Services, Denver Service Center, NPS D-107. Washington State Department of Fish and Wildlife (WSDFW), February 2001, Washington State Sport Catch Report 1998. , Sensitive Information Reports, various quadrangles, various dates. Washington State Department of Ecology (Ecology), January 2001a, L-Bar Site Draft Material Removal and Compliance Monitoring Work Plan Fact Sheet, Publication No. 01-09-025. , 2001b, Water Rights Application Tracking Certificates, Stevens County, Washington. 10:START-2\01020028\S759 9 -2 ------- , 1990, Determination of Nonsignificance of Renovation Proposal for Existing Rock Ore Mill, Proponent, Northport Minerals, Inc., July 2, 1990. Washington State Department of Natural Resources (DNR), 1983, Disposal of Sludge Bar Residue from Phoenix Resource Recovery Incorporated's Mineral Waste Reprocessing Plant at Chewelah, Washington, Draft Environmental Impact Statement. Weaver, C. E., 1920, The Mineral Resources of Stevens County: Washington Geological Survey Bulletin 20. Western Regional Climate Center (WRCC), May 2002, Precipitation Records for Colville, Washington, http://www.wrcc.dri.edu/cgi-bin/cliREC+m.pl?wacolv. Wilkinson, O.E. (Ozzie), March 18, 2002, Northwest Alloys, Inc., Addy, Washington, telephone conversation regarding site activities with Monica Tonel, United States Environmental Protection Agency, Seattle, Washington. States Department of Commerce, Bureau of the Census (USBC), 2000 US Census Data, General Housing Characteristics, Stevens County, http://www.census.gov. States Department of Agriculture (USDA), 1982, Soil Survey for Stevens County, Washington. States Department of Health and Human Services (DHHS), January 1999, Petitioned Public Health Assessment, Northport Area, Northport, Stevens County, Washington, prepared by Petition Response Section, Exposure Investigation and Consultation Branch, Division of Health Assessment and Consultation, Agency for Toxic Substances and Disease Registry, Atlanta Georgia. States Environmental Protection Agency (EPA), 2000, USEPA Contract Laboratory Program Statement of Work for Inorganics Analysis, ILM04.1. January 2000. , May 1999, USEPA Contract Laboratory Program Statement of Work for Organics Analysis, OLM04.2. , 1996, Using Qualified Data to Document an Observed Release and Observed Contamination. , 1994a, Data Quality Objectives Process for Superfund, Interim Final Guidance, EPA 600-R-96-055. , 1992, Sediment-Quality Assessment of Franklin D. Roosevelt Lake and the Upstream Reach of the Columbia River, Washington, 1992. United States Fish and Wildlife Service (USFWS), various dates, National Wetlands Inventory Maps, Scale 1:58,000. United States Geologic Survey (USGS), 2002, http://waterdata.usgs.gov/nwis/discharge. , 1985, 1:24,000 Scale Topographic Map, Chewelah, Washington. , 1984, 1:100,000 Scale Topographic Map, Chewelah, Washington. , 1969a, 1:24,000 Scale Topographic Map, Onion Creek, Washington. , 1969b, 1:24,000 Scale Topographic Map, Marcus, Washington. , 1969c, 1:24,000 Scale Topographic Map, Northport, Washington. , 1992a, 1:24,000 Scale Topographic Map, Spirit, Washington. 10:START-2\01020028\S759 9 -3 United United United United ------- , 1992b, 1:24,000 Scale Topographic Map, Leadpoint, Washington. , 1992c, 1:24,000 Scale Topographic Map, Boundary, Washington. 10:START-2\01020028\S759 9-4 ------- |