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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 4 of 17 <br /> <br /> <br />• Ditch D5: <br />• OMI:(December 2024 report) Some areas along the south-facing slope of The Knob appear to <br />also be contributing to the increased sediment in D5. Some of these areas appear to have been <br />partially addressed in the past through the use of BMPs such as straw wattles, rip rap, and <br />branches. However, the Operator shall implement additional sediment control mechanisms on <br />these slopes to control erosion and reduce sediment build up in D5. <br />• The “Knob”: <br />• The reclaimed north facing slopes on The “Knob” appear to be vegetated, stable, and are not <br />exhibiting extensive erosion at this time. <br /> Photo 1: Looking toward the north-facing slopes of “The Knob” <br /> <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 />• Pond 006a: <br />• OMI: (October 2024 report) Pond 006a - Sediment has built up within the upper portion of the <br />flume. The Operator shall clean the flume of sediment and vegetation to ensure it functions <br />properly.