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DP Spring <br /> The field parameters were measured on October 31, 2023. The flow is measured by timing the fill <br /> rate of a five-gallon bucket. Field parameters from DP Spring are measured in the stock tank <br /> located at the spring. The field sampling form is provided in Appendix 3. Flow rates and field <br /> parameters at DP Spring are summarized in Appendix 1, Attachment 4, laboratory data are <br /> included in Appendix 5. <br /> PR Spring <br /> An analytical sample was collected, and parameters were measured at PR Spring on October 31, <br /> 2023. The flow is measured by timing the fill rate of a five-gallon bucket. Field parameters from <br /> PR Spring are measured in the stock tank located at the spring. The field sampling form is provided <br /> in Appendix 3. Flow rates and field parameters at PR Spring are summarized in Appendix 1, <br /> Attachment 5. The historical analytical data from PR Spring are summarized in Appendix 2,Table <br /> 2. <br /> Monitoring Well W-1 <br /> Monitoring Well W-1 was installed on October 12, 2008 for the purpose of characterizing and <br /> monitoring groundwater quality downgradient of the waste rock storage area. <br /> Monitoring Well W-1 was sampled and measured for the static groundwater level and field <br /> parameters on October 31, 2023. The field sampling form is provided in Appendix 3. <br /> Water levels and field parameters are summarized in Appendix 1, Attachment 6. The analytical <br /> data from Monitoring Well W-1 are summarized in Appendix 2, Table 3. <br /> Lumsden Canyon Seep <br /> The Lumsden Canyon Seep (also referred to in earlier reports as Lumsden Canyon Spring) was <br /> monitored for field parameters and sampled in June and December of 2008. This location was <br /> monitored by Western Water & Land, Inc. during hydrologic reconnaissance required by BLM <br /> stipulations to the Plan of Operations.No further sampling or field parameter measurement events <br /> are scheduled at this time. <br /> Historical field parameters are summarized in Appendix 1, Attachment 7 and the historical <br /> analytical data from the Lumsden Canyon Seep samples are summarized in Appendix 2, Table 4. <br /> Rajah 49 Thornton Portal (Rajah Spring) <br /> The Rajah Spring has been sampled annually from 2009 to 2023. Field parameters and a sample <br /> were collected during the third quarter 2023, during the 2023 Seeps and Springs Survey on July <br /> 25, 2023. EFRI will continue to include the Rajah Spring in future annual seeps and springs <br /> 3 <br />