Controlling Turbidity: Getting Flocculation to Work on Your Site

While the US EPA has withdrawn its proposed turbidity limit on construction site runoff, there are still many states have or are proposing their own enforcement levels.  Construction site owners and managers are also looking for ways to avoid public outcry and potential lawsuits over muddy water leaving their site.  In most cases, typical and even more advanced erosion and sediment control practices will not prevent discharges that look like chocolate milk.  This two-part seminar will explore the principles behind chemical treatments to rapidly settle suspended solids and reduce turbidity in runoff from construction sites. Part One is: Turbidity Control by Chemical Flocculation: Basic Concepts This module is the second part, where Dr. McLaughlin he will then go over a variety of methods to apply those principles to greatly reduce turbidity.  After conducting research on this subject for over 10 years in both laboratory and active construction site setting, McLaughlin has a lot of data to back up his recommendations!  He will wrap up with a discussion of suggested chain of command options to avoid failures.

Course Level: Intermediate