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parameters from DP Spring were measured in the stock tank located at the spring. The <br />flow rate and field parameters at DP Spring are consistent with historical records. <br />Previous and current flow rates and field parameters at DP Spring are summarized in <br />Section 4. <br />PR Spring <br />The flow and field parameters were measured at PR Spring on April 18, 2011. The flow <br />at PR Spring was estimated by determining the time required to fill a 5-gallon bucket. <br />Field parameters from PR Spring were measured in the stock tank located at the spring. <br />The flow rate and field parameters at PR Spring are consistent with historical records. <br />Previous and current flow rates and field parameters at PR Spring are summarized in <br />Section 5. Historical analytical data from PR Spring is summarized in Table 2. <br />Monitoring Well W-1 <br />Monitoring Well W-1 was installed on October 12, 2008 for the purpose of characterizing <br />and monitoring groundwater quality downgradient of the waste rock storage area. <br />Monitoring Well W-1 was measured for the static groundwater level on April 18, 2011. <br />The water level at Monitoring Well W-1 was similar to previous measurement events. <br />Historical water levels and field parameters are summarized in Section 6. Historical <br />analytical data from Monitoring Well W-1 is summarized in Table 3. <br />Lumsden Canyon Seen <br />The Lumsden Canyon Seep (also referred to in earlier reports as Lumsden Canyon <br />Spring) was monitored for field parameters and sampled in June and December of 2008. <br />This location was monitored by Western Water & Land, Inc. during hydrologic <br />reconnaissance required by BLM stipulations to the mine permit. <br />The field parameters are summarized in Section 7 and the analytical data from the <br />Lumsden Canyon Seep samples is summarized in Table 4. No further sampling or field <br />parameter measurement events are scheduled at this time. <br />Raiah 49 Thornton Portal <br />Water was observed flowing from the Rajah 49 Thornton Portal and sampled in 2009 and <br />2010. The estimated flow rate and measured field parameters are included in Section 8 of <br />this report and the analytical data is summarized in Table 5. Energy Fuels will continue <br />to include the Thornton Portal in future annual seep surveys and collect samples for <br />analysis if discharge is observed. <br />Waste Rock <br />No ore was mined and no waste rock was produced in the First Quarter 2011. Because <br />the Whirlwind Mine is currently on stand-by status with only maintenance activities <br />being conducted, Energy Fuels has suspended the quarterly waste rock sample collection <br />until such time that mining operations resume and waste rock removal from the mine <br />commences. <br />Production rates of ore and waste rock are summarized in Sections 9 and 10, respectively. <br />Analytical data from previously collected waste rock samples is summarized in Table 6. <br />2