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August 6, 2025 C-1996-084/Lorencito Canyon Mine AMG <br /> <br />Number of Partial Inspection this Fiscal Year: 1 <br />Number of Complete Inspections this Fiscal Year: 1 <br /> <br /> Page 5 of 17 <br /> <br />• OMI: (January 2024) Erosion rills are forming on the north and west banks of Pond 006a. The <br />erosion on the north bank appears to have been addressed at some point, because rebar is placed <br />above the rills. However, it appears that the prior BMPs are no longer functioning adequately. <br />Pursuant to Rule 4.05.5(1)(c), the Operator shall address the erosion and repair the north bank. <br />The erosion on the west bank appears to have been caused by runoff from the road located east of <br />Pond 006a. Pursuant to Rule 4.05.5(1)(c), the Operator shall address the erosion and repair the <br />west bank. <br />• OMI: (August 2024 report) The check dams within Ditch D9, leading down to Pond 006a, contain <br />an excess amount of sediment. A gully was also observed cutting down from the road and adding <br />sediment to the third check dam. The Operator shall remove the excess sediment from the check <br />dams within D9. <br />• OMI: (February 2024) The check dams leading to Pond 006a, within ditches D8 and D64, are <br />nearly full of sediment. Pursuant to Rules 4.05.3(1)(c)-(e) and 4.05.5, the Operator shall clean <br />out the sediment from the check dams to prevent excess sediment from entering the pond. <br /> <br />• Pond 007a: <br />• The pond was dry at the time of the inspection. <br />• The pond embankment appeared to be stable and vegetated. <br />• The primary and emergency spillways appeared clear and functional. <br />• The flume was dry at the time of the inspection. <br /> <br /> Photo 2: Pond 007a <br />