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In 2020, Montana State University initiated a five-year NSF-funded Revolutionizing Engineering Departments (RED) project with the vision of transforming the traditional topic-focused course structure in environmental engineering into an integrated project-based curriculum (IPBC) that supports a climate of collaborative and continuous learning among faculty and students. The curriculum redesign process engaged faculty in an extensive consensus-building process to define desired student learning outcomes for the program. In the transformed curriculum, faculty collectively agreed to integrate systems thinking, sustainability, and professionalism competencies and to cultivate students’ identity as environmental engineers throughout the degree. To achieve these goals, there must be a level of shared meaning around the four constructs of interest—systems thinking, sustainability, professionalism, environmental engineering—to guide pedagogical decision making among faculty. A qualitative cultural assessment was conducted to investigate, analyze, and describe the shared meanings faculty hold around the four constructs. The goal of the assessment was to uncover areas of shared meaning with the strongest consensus within and across constructs. By eliciting and describing “definitions by consensus,” faculty will be able to generate consistency in teaching and assessment practices throughout the curriculum. The culture assessment process undertaken by the department and its outcomes will be of interest to other programs seeking to foster collaborative teaching and to enhance collective ownership of degree program learning outcomes. 

Previous studies have shown that algal-derived dissolved organic matter (DOM) has a strong influence on the formation of disinfection byproducts (DBPs) during the treatment of drinking water. In the summer of 2010, we evaluated the role of nitrogen and phosphorus loading and phytoplankton abundance as drivers of the concentrations and quality of DOM and the associated DBP formation in 30 reservoirs in the mountains and plains of the State of Colorado. Optical properties such as Specific Ultraviolet Absorbance at 254 nm (SUVA 254 ) and fluorescence spectroscopy were used to characterize DOM quality. Nutrient concentrations such as total nitrogen were also assessed and were associated with high concentrations of chlorophyll a (Chl-a). In turn, high total organic carbon (TOC) concentrations were associated with high concentrations of Chl-a, and the DOM in these reservoirs had a fluorescence signature indicative of contributions from phytoplankton growth. The reservoirs with TOC concentrations above 4 mgC/L were predominantly located in the plains and many are impacted by agricultural runoff and wastewater discharges, rather than in the mountains and are characterized by warm water conditions and shallow depths. For a subset of fourteen reservoirs, we characterized the composition of the phytoplankton using a rapid imaging microscopy technique and observed a dominance by filamentous Cyanobacteria in reservoirs with TOC concentrations above 4 mgC/L. The combination of high TOC concentrations with microbial characteristics resulted in high potential for production of two major classes of regulated DBPs, trihalomethanes and haloacetic acids. While fluorescence spectroscopy was useful in confirming the contribution of phytoplankton growth to high TOC concentrations, evaluation of predictive models for DBP yields found that all equally predictive models included SUVA 254 and some of these models also included fluorescence indices or logTOC. These findings provide a limnological context in support of the recent guidelines that have been implemented for protection of high-quality drinking water supplies in the State of Colorado.