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The mining and processing studies will be performed offsite <br />3 Geochemistry <br />a Elaborate on the massive reduction capacity The Division has limited knowledge <br />of the ore zone <br />The Hansen deposit is a large pod shaped deposit that is approximately 1 mile long 0 75 mile wide <br />and the average thickness is approximately 50 feet thick The deposit is within the Echo Park <br />sandstone formation and is bounded on the bottom and sides by Precambrian rock Mineral <br />deposits within the Echo Park formation are formed as meteoric water containing dissolved <br />minerals migrates through the formation and encounters an oxygen reduced environment The <br />reduced oxygen environments are caused in part by the presence of concentrated carbon debris in <br />the Echo Park sandstone thought to be associated with alluvial fan depositional settings <br />Consequently the deposit is stable and does not migrate due to the geologic constraints of the <br />Precambrian rock structure and the presence of reducing organics <br />b Explain how infiltrated meteoric water in the ore zone still has a DO concentration <br />similar to the source meteoric water given the massive reduction capacity of the <br />formation alluded to in part a <br />The original statement was of the mineral zone interacting with infiltrating meteoric water not <br />infiltrated The DO concentrations of meteoric water that is infiltrating the deposit is reduced by the <br />presence of oxygen consuming materials in the ore zone i e infiltrated water would have a <br />reduced DO concentration in comparison with the infiltrating water The reduction capacity of the <br />formation is evidenced by the observation in the Adrian Brown letter observing that dissolved <br />uranium concentrations are low in the deposit <br />4 Groundwater Baseline Monitoring <br />Enclosed is a figure of the project area illustrating the locations of all BLR groundwater monitoring <br />wells <br />Please do not hesitate to contact me with any questions <br />Sincerely <br />1 <br />v <br />J <br />Patrick Siglin <br />Geologist <br />Enclosures <br />cc Tom Kaldenbach DRMS via email w encl <br />cc Stephanie Carter BLM Royal Gorge via US Mail and email w encl <br />cc Sam Kozacek Fremont County via email w encl