2009-12-11_HYDROLOGY - M2007044 - Laserfiche WebLink

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tanks located at the springs. The flow rates and field parameters are consistent with historical records for these springs. Previous and current flow rates and field parameters at DP Spring and PR Spring are summarized in Sections 4 and 5 of the Hydrological Report. Analytical data from previously collected samples from PR Spring are summarized in Table 2. Monitoring Well W -1 Monitoring Well W -1 was installed on October 12, 2009 for the purpose of characterizing and monitoring groundwater quality downgradient of the waste rock dump. During the quarter, Monitoring Well W -1 was sampled on September 11, 2009. Previous and current water levels and field parameters are summarized in Section 6 of the Hydrological Report and the analytical data from Monitoring Well W -1 is summarized in Table 3. The analytical data report for the collected sample is included in Appendix A of the report. The water level, field parameters and analytical data from Monitoring Well W -1 was similar in chemistry and water quality to previous sampling events. Lumsden Canyon Seep The Lumsden Canyon Seep (also referred to in earlier reports as Lumsden Canyon Spring) was monitored for field parameters and sampled in June and December of 2008. This location was monitored by Western Water & Land, Inc. during hydrologic reconnaissance required by BLM stipulations to the mine permit. The field parameters measured are summarized in Section 7 of the Hydrological Report while the analytical data from the Lumsden Canyon Seep samples is summarized in Table 4. Seep Survey and the Raiah 49 Thornton Portal An annual seep survey was conducted along the Upper Salt Wash Member horizon downgradient of the Whirlwind Mine on September 8, 2009. Water was observed flowing from the Rajah 49 Thornton Portal during the seep survey. The flow rate from the Thornton Portal could not be directly measured as it was not channeled but was visually estimated to be 1 to 2 gallons per minute. Water flow was not observed at the Thornton Portal in previous seep surveys conducted in June and December 2008. The flow from the portal was subsequently measured for field parameters and sampled on September 21, 2009. The estimated flow rate and field parameters are included in Section 8 of the Hydrological Report and the analytical data is summarized in Table 5. The laboratory report for the collected sample is included in Appendix A. The analytical data indicates elevated levels of some metals (arsenic, molybdenum, selenium, uranium, and vanadium) and radium -226. The Whirlwind Mine workings were only advanced approximately 30 feet from the time the mine was accessed in April 2007 (under a prospecting permit) until it went on stand- by in November 2008. Only maintenance activities have been performed since the mine has been on stand -by. The mine discharge from the Thornton Portal began due to factors not associated with Energy Fuels work in the Whirlwind Mine as the Thornton portal is located more than one mile from the Whirlwind Mine workings. Energy Fuels considers the analytical data from the collected sample to be baseline data. Energy Fuels will continue to include the Thornton Portal in future annual seep surveys and collect samples for analysis if discharge is observed. 2