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analytical laboratory data are provided in the Second Quarter Report. EFRI will continue to <br /> include the Rajah Spring in future annual seeps and springs surveys. <br /> Waste Rock <br /> No ore was mined and no waste rock was produced in the fourth quarter 2017. The Mine is <br /> currently in temporary cessation status with only maintenance and monitoring activities being <br /> conducted. EFRI has suspended the quarterly waste rock sample collection until such time that <br /> mining operations resume and waste rock removal from the Mine recommences. <br /> 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 are summarized in <br /> Appendix 2, Table 6. <br /> Sediment Pond <br /> The sediment pond has been monitored since its construction in November 2008 in accordance <br /> with the Colorado Division of Reclamation, Mining, and Safety stipulations. Although storm <br /> events and significant snow melt events have occurred, none have resulted in stormwater <br /> discharge from the pond. As a result, no stormwater samples have been collected from the pond <br /> to date. EFRI will continue to monitor the sediment pond for discharge and will collect samples <br /> in the event that a discharge is observed. <br /> Dolores River <br /> In accordance with BLM stipulations to the Mine permit, the Dolores River is required to be <br /> monitored for selenium upstream and downstream from the confluence of Lumsden Creek when <br /> all of the following 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 <br /> River, 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 fourth quarter 2017. EFRI will <br /> commence monitoring the Dolores River for discharge from Lumsden Creek and take samples, <br /> as necessary, 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 <br /> for the Mine. <br /> 3 <br />