Designed in cooperation with the Illinois Environmental Protection Agency's Clean Lakes Study, the Morton Arboretum in Lisle, IL is undertaking a project this summer to improve the health of Meadow Lake. According to a story in the Daily Herald, "The lake, on the arboretum's east side near the main entrance, suffers from erosion and sediment caused by the fluctuating water table. Its high phosphorous levels make it uninhabitable for many fish." The solution is carefully digging a 3-foot-wide slurry wall to enclose the lake. This project is also part of the arboretum's $43 million expansion and renovation, expected to be completed in 2005.