(Cassie Porter and Caroline MacVicar taking mud samples from Upper Waban Brook) Last week, two of our undergraduate lab assistants, Cassie and Caroline, and our new lab manager Shelley McCann went to take samples from four different locations. They collected mud samples from Morses Pond, Paintshop Pond, Upper Waban Brook, and Lake Waban. Paintshop Pond was once the site of a paint factory that at its peak, made "six tons daily" (Ostfeld). Over the years, there have been expan