PROJECT: WELL ID: ERDC Site Wide Monitoring Plan (13 002-04) KV-84N-D LOCATION: WELL MATERIAL: Keno Hills Silver District (KHSD) Fire Hall Deep DRILLING CONTRACTOR: NORTHING: EASTING: Access Consulting Group DRILLING EQUIPMENT: GROUND SURFACE ELEV. (masl): TOC ELEVATION (m ags): Midnight Sun Drilling Inc. 0.8634984 TOTAL DEPTH (m): DRILLING METHOD: WATER DEPTH (m bgs): Air Rotary 88.392 57.068 LOGGED BY: SAMPLING METHOD: DATE STARTED: DATE COMPLETED: EA Interval by major lithology 30-Oct-13 1-Nov-13 Graphic Description Well Construction Log Depth (m) -2 -2 0 Sand Pack 0 Locking Casing Brown silty gravel with cobbles, damp Cap Bentonite 2 2 Gray/brown gravelly silt with sand and cobbles, damp 4 4 Boulder - quartzite, damp 6 Gray/brown gravelly silt with sand and cobbles, damp 6 Gray/brown gravelly silt with sand, damp 8 8 Dark gray sand with trace silt, grading to silt at 37', damp 10 10 12 Silt, coarse, trace sand, damp 12 Gravel with trace silt 1"- but becoming finer (1/4"), clean 14 14 subrounded (fluvial) grains, damp 16 16 Sandy gravel, light gray, damp 18 18 Brown fine sand/coarse silt, damp 20 20 Wet gray silt, wet 22 22 Sandy gravel, medium gray, damp 24 Fine gravel with trace sand and silt, clean, damp 24 Sandy gray/brown gravel (1"-), alternating dry and moist, gray 26 26 and brown 28 28 Coarse sand with trace gravel, saturated - 20L water blown 30 30 from hole after rod change 32 32 34 34 Gray sandy silt, wet Casing 36 36 Grout 38 38 Silty gravel, damp 40 40 Clean gravel with cobbles, wet - appears to be water at 137 42 42 feet after water addition stopped 44 Medium sand with trace silt, moist but no water 44 Sand and gravel with silt, moist 46 46 Gray gravel with some coarse sand, damp 48 48 Light gray powderly silt with trace gravel and fine sand, 50 50 alternating bands drier and moister with more or less 52 52 gravel/cobbles 54 54 Gray sandy gravel with cobbles. Powdery and dry with 56 several boulders encountered to 180, water present at 193' 56 58 58 60 60 62 62 Silty gravel, saturated, increased fines , wet 64 Clean gravel with cobbles and boulders, trace sand and silt, 64 wet 66 66 68 68 Gray silty clay till with gravel, impermeable? More gravel 70 between 225-232, added water 70 Bentonite 72 Gray quartzite 72 PVC Riser 74 74 Sand Pack Interbedded black graphite schist and quartzite, some quartz 76 76 and pyrite Bentonite 78 Gray/green muscovite/sericite schist 78 Light gray hard quartzite, oxidized zone between 262'-267' 80 PVC Screen 80 with groundwater, pyrite in cuttings Sand Pack 82 82 84 84 Quartzite with thin bedded graphite schist - EOH 86 86 Sand Pack 88 PVC End Cap 88 90 90 Bedrock Borehole Diameter: 6" NOTES: Stuck casing near top of bedrock at 234 feet QZ17-076 - YWB - January 29, 2018 Overburden Borehole Diameter: 7 3/8" Surface Seal Borehole Diameter: 10"