d. Predicting Northwest Indiana’s Water Quality (Ruijian Zhang)

Water quality prediction is becoming a major challenge in Northwest Indiana and Lake Michigan region. Traditionally, mechanistic simulation models are employed for water quality modeling and prediction. However, the nature in Northwest Indiana and Lake Michigan region is very complex, and even the most detailed simulation model is extremely simple in comparison. At some point, additional detail exceeds our ability to simulate and predict with reasonable error levels. In those situations, two attractive alternatives of water quality modeling and prediction may be to express the complex behavior of the nature in Northwest Indiana and Lake Michigan region. One of them applies Bayesian network to predict the water quality probabilistically, as in statistical mechanics. The other employs C5 as decision tree modeling tool to make the water quality prediction. This study will investigate the potential for probability network and decision tree models to support water quality assessment and prediction in Northwest Indiana and compare these two methods with conventional mechanistic models.

e. Validation of Inductively Coupled Plasma Spectroscopy (ICP), (Anita Katti).

‘The Inductively Coupled Plasma Spectroscopy (ICP) measures and quantifies metals in a solution in one step with a single introduction of sample.  Its design uses a sensor array to detect the signals of “all” metals simultaneously.  The ICP has been installed with access to a 220 V line and an elephant trunk hood. Presently, a PWI faculty is testing and validating the equipment. The ICP will be tested using calibration standards and calibration standard mixture solutions readily available from vendors and suppliers in order to master the software as well as evaluate the accuracy and precision of the instrument for selected elements.  The ICP will be validated by measuring the limit of detection and the limit of quantification for the same selected metals.

f. Wastewater Reuse Assessment in Northwest Indiana, William Rutherford and George Nnanna

The goal of this project is to assess, through statistical analyses, the amount of wastewater generated in the Northwest Indiana region that is being treated and reused for other requirements on a county by county basis. This data will then be used to determine methods to improve the quality of the water. Included in this study are the amount of water that is currently being consumed by agriculture, industry, and residential/commercial groups and their corresponding sources.

g. Raltson Street Lagoon Project, 2006, ($17,300.00), Gary Sanitary District (GSD), Gary, IN, Awarded, George Nnanna, Hal Pinnick, Anita Kitta

The objective of this project is to examine the reports submitted by CDM to GSD on the current status of the PolyChlorinated Biphenyls (PCB) content of the Ralston Street Lagoon. Based on assessment of the reports, the Purdue Calumet Water Institute (PWI) will recommend an economically feasible remediation plan for the lagoon.