Lumos was contracted to generate a “Lithium Ore Reserve” Report for the In Situ Mining Operations in Silver Peak, Nevada. The in situ mining operation involves extracting lithium bearing brine from aquifers in Clayton Valley and concentrating the lithium in the brine to economic levels through the use of solar evaporative ponds. Once the brine in the network of ponds reaches a high enough concentration in lithium, the brine is pumped to a chemical plant in the Town of Silver Peak, Nevada where the lithium is extracted from the brine as lithium-carbonate. Due to many years of pumping the lithium bearing brines from the aquifers, the lithium concentration in the brine is steadily declining. Lumos reviewed 25 years of lithium brine concentration data and generated decline curves for the six specific aquifer systems in the basin. Lumos developed an integrated analytical model of regression curves for each of the aquifers to determine the economic limits and production recovery capacities that remain. Based on the models and anticipated production goals for the in situ mining operation, Lumos was able to estimate the longevity of the mine. Lumos provided the client with a report specifying the methodology and analytical results for the lithium ore reserves. The analytical models were given to the Silver Peak Operation, as part of the contract, so the client could continue to update the models annually and track the projected lithium declines with actual declines.