Project Final Report-08122-36-This project will develop a methodology of evaluating frac water pretreatment options. Based on field frac water data (flow and composition profiles) the team will establish feed composition and flow rate design bases for both mobile and stationary pretreatment processes. The team will conduct technical and economic assessments of three candidate pretreatment options and select a process for further development. Based on lab and modeling studies, the team will identify process issues (and resolutions as applicable) and develop process design and cost estimates for both stationary and mobile pretreatment facilities.