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April 4, 2023 C-2010-089/New Horizon North Mine LJW <br /> Inspection Topic Summary <br /> NOTE: Y=Inspected N=Not Inspected R=Comments Noted V=Violation Issued NA=Not Applicable <br /> N -Air Resource Protection N -Roads <br /> N -Availability of Records N -Reclamation Success <br /> R -Backfill&Grading N -Revegetation <br /> N -Excess Spoil and Dev. Waste N - Subsidence <br /> N -Explosives N - Slides and Other Damage <br /> N -Fish&Wildlife N - Support Facilities On-site <br /> R -Hydrologic Balance N - Signs and Markers <br /> N -Gen. Compliance With Mine Plan N - Support Facilities Not On-site <br /> N -Other N - Special Categories Of Mining <br /> N -Processing Waste N -Topsoil <br /> COMMENTS <br /> This was a partial inspection conducted by Lucas West of the Colorado Division of Reclamation,Mining and <br /> Safety's Active Mines Program. The site is in final reclamation,and reclamation activities were active the day of <br /> the inspection. it was actively snowing with very low visiblity at the time of the inspection. Due to the snow, <br /> excessively muddy conditions and reclamation activities taking place on the site the inspection confined to <br /> accessible roads and areas. Five Photos accompany this report to illustrate the observed site conditions. <br /> BACKFILL and GRADING—Rule 4.14 <br /> Contemporaneous Reclamation 4.14.1;Approximate Original Contour 4.14.2;Highwall Elimination 4.14.1(2)(f); <br /> Steep Slopes 4.14.2,4.27;Handling of Acid and Toxic Materials 4.14.3; Stabilization of Rills and Gullies 4.14.6: <br /> At the time of the inspection reclamation activities were taking place. Bench 1 material was being hauled <br /> from the stockpile on the east side of the facilities area and dumped into the Pond 001 area. Excavator and truck <br /> teams were observed shuttling material as can be seen in Photo One. Backfilling of the sediment ditches along the <br /> east,and south boarder of the permit area have already been completed. The dump area of Pond 001 was in good <br /> condition,the reporting ditch has been backfilled and the inlet structure to the pond has been removed. Pond 001, <br /> shown in Photos Two and Three has been partially backfilled with the adjacent Bench 1 material as well as the <br /> berm material located just south of the pond. Throughout the area being worked no evidence of significant erosion <br /> was noted. In the southeast corner of the site,brush clearing operations were underway, shown in Photo Four,in <br /> preparation for removing the screened rock from the lined ditch and furthering reclamation activities. All work is <br /> being conducted in accordance with the approved plan and despite the snowy and muddy conditions are making <br /> excellent progress. <br /> HYDROLOGIC BALANCE -Rule 4.05 <br /> Drainage Control 4.05.1,4.05.2,4.05.3; Siltation Structures 4.05.5,4.05.6; Discharge Structures 4.05.7,4.05.10; <br /> Diversions 4.05.4;Effluent Limits 4.05.2; Ground Water Monitoring 4.05.13; Surface Water Monitoring 4.05.13; <br /> Drainage —Acid and Toxic Materials 4.05.8;Impoundments 4.05.6,4.05.9; Stream Buffer Zones 4.05.18: <br /> The ditch reporting to Pond 002 was observed and in place. Reclamation activities have not yet begun in <br /> this area,with the exception of the removal of the HDPE liners on the inlet structures to the pond and removal of <br /> the discharge extension pipes associated with the primary and emergency discharge points. The liners and pipe are <br /> Number of Partial Inspection this Fiscal Year: 7 <br /> Number of Complete Inspections this Fiscal Year: 3 <br /> Page 2 of 5 <br />