CASE STUDY Colombia: Geothermal Development In 2013, RESPEC and the Dewhurst Group began collaborating on the Nevado del Ruiz geothermal develop- ment project in Colombia for Empre- sas Públicas de Medellín E.S.P ., the second-largest electrical utility in the country. The project is currently in the geothermal exploration phase. In April 2015, the team installed two weather stations and one streamflow station in the Nereidas Valley on the western flank of the Nevado del Ruiz volcanic massif. One weather station is located at approximately 11,900 ft elevation, while the other is at 8,800 ft. Both communicate using LS300G cellular modems with locally obtained SIM cards. The streamflow station communicates with the lower me- teorological station using the RF450 spread-spect

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