This project was initiated in 2010 to prepare the Texas Department of Transportation (TxDOT) for changes to the CGP regarding the monitoring and sampling of their construction site to meet the anticipated numeric ELG requirements. The scope of the project was modified due to EPA’s actions. However, in light of anticipated future numeric limits, the project’s monitoring, and testing experiments proceeded to 1) determine “typical turbidity” representative of TxDOT’s construction site discharges, 2) collect performance data on innovative erosion and sediment control measures that might be expected to achieve the discharge standard, and 3) provide an update to TxDOT’s Stormwater Managements Guidelines for Construction Activities.