Douglas County acquired an old turbine oil lubed agricultural well from a local rancher called the Montana-1 Well. Prior to acquiring the well, the turbine pumping systems in the well had been over lubricating the line shaft with food grade oil for years. When Douglas County acquired the well, they discovered that a thick layer of food grade oil existed on the top of the static water level. After several years of operation, the food grade oil made its way into the local storage tank that the well supplied, creating maintenance issues for the public works department. In 2003, NDEP informed Douglas County that the old agricultural well didn’t have an adequate sanitary seal to be used as municipal well and requested that the well be taken off line.Lumoswas hired by Douglas County Public Works Department to conduct an evaluation of the Montana-1 Well. Lumos developed a two phase approach for developing a viable water source from the Montana-1 Well versus drilling a replacement well. During the first phase of the project, Lumos conducted a document search and review of all available information on the Montana-1 Well and surrounding hydrogeology. Lumos contracted a local pump company to pull the pumping unit, bail-out the sediment and oil in the well and run a video survey to determine its integrity. Lumos conducted a step drawdown and constant rate pump test to determine the wells hydraulic characteristic compared to historical records. A technical memorandum with recommendations was presented to Douglas County Public Works showing a cost to benefit analysis recommending a replacement of the Montana-1 Well within the same parcel location. Phase 2 of the project moved forward with the design, permitting, bid documents, and drilling of the replacement well. The well was brought on line in 2013 with a production capacity of over 400 gallons per minute, meeting all Primary and Secondary Safe Drinking Water Standards.