This position will assist the Furst Lab at the Occoquan Watershed Monitoring Lab (OWML) in GIS modeling, laboratory, field work related to a research project on water contamination from septic systems. A successful candidate will have prior experience modeling soil topographic information and pluvial flooding conditions in GIS, collecting PFAS samples, and performing water quality analyses. Primary duties include: Leading field work to collect PFAS water and sediment samples from septic-impacted streams in Fairfax County; performing water quality analyses in the field and laboratory, including nutrients, TSS, total organic matter and fluorescence spectroscopy; assisting with PFAS and PPCP sample preparation, extraction and LC-MS/MS data processing; GIS modeling and statistical analyses to relate geographic and water quality variables; perform data processing and analysis in Insight, Excel and Python; prepare reports with results and QA-QC criteria; analyze data, create figures, and develop statistical analyses for publications; assist in manuscript writing; attend and present at project team meetings and research group meetings. This is an off-campus position at the Occoquan Watershed Monitoring Lab, located in Manassas, Virginia.