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Production rates of ore and waste rock are summarized in Appendix 1, Attachments 9 and 10, <br /> respectively. Analytical data from previously collected waste rock samples, including 2022, are <br /> summarized in Appendix 2,Table 6. <br /> Sediment Pond <br /> The sediment pond has been monitored since its construction in November 2008 in accordance <br /> with DRMS stipulations. Although storm events and significant snow melt events have occurred, <br /> none have resulted in storm water discharge from the pond. As a result, no storm water samples <br /> have been collected from the pond to date. EFRI will continue to monitor the sediment pond for <br /> discharge and will collect samples in the event that a discharge is observed. <br /> Dolores River <br /> In accordance with BLM stipulations,the Dolores River is required to be monitored for selenium <br /> upstream and downstream from the confluence of Lumsden Creek when all of the following <br /> conditions are met: <br /> 1) The Mine treatment plant is discharging treated water, <br /> 2) There is continuous flow from the middle tributary of Lumsden Creek to the Dolores River, <br /> and <br /> 3) Selenium levels have been in exceedance of the CDPS permit effluent limits in the past <br /> two years. <br /> Because water treatment of mine water has been suspended, it was unnecessary to monitor <br /> Lumsden Creek for discharge to the Dolores River in the first quarter 2023. EFRI will commence <br /> monitoring the Dolores River for discharge from Lumsden Creek and take samples, as necessary, <br /> at such time that treatment and discharge of mine water resumes. <br /> Hydrological Monitoring Summary <br /> Refer to Appendix 2, Table 7 for the hydrological compliance monitoring summary and status for <br /> the Mine. <br /> 4 <br />