To test the chloride levels in the Edgewood retention pond, we first obtained water samples for testing. The group focused on collecting samples around weather conditions, such as during snowfall or in the days prior to, or following a snowfall, or melting. In the late winter/early spring samples were collected more frequently when snow and ice began to melt. The group chose one member to collect the samples of the retention pond water for the sake of consistency. Before the water in the Edgewood retention pond froze, water was collected from the location at the end nearest the Sondregger Science Building. Following the water freezing, the group member collected samples by drilling through the ice using an auger, in the same location—approximately 3 feet from the edge of the pond. Samples were collected in plastic water bottles and labeled with date, group member’s names, and weather conditions. Water samples were sealed tightly and placed in a refrigerator until tests could be conducted. Each sample was tested twice with a Hach® chloride test (low test) to measure the chloride concentration of water. Results were recorded and graphed using Microsoft Excel. The results from each of the set of tests were then averaged and plotted on a graph. We compared our findings from the Edgewood retention pond to previous results of a similar experiment. We found our data to be comparable to their results (Carson, 2001). Both groups experienced similar trends of chloride levels in the Edgewood Retention Pond, especially with reference to a peak in these levels by mid February as snow began to melt.