Erosion and Sediment Control
Half-Day Training Course
Erosion, Sediment, and Turbidity Control on Linear Projects
This fast paced half-day workshop is for all levels of construction stormwater practitioners who are involved with the planning, design, and implementation of Stormwater Pollution Prevention Plans (SWPPP) for linear construction projects. Emphasis will be placed on linear roadway and bridge sites as well as pipeline and powerline jobs. Legal and environmental aspects of the SWPPP will be briefly introduced from a federal and state perspective. A Best Management Practice Construction Stormwater toolbox will be closely examined that contains erosion, sediment, and turbidity control practices. The toolbox will provide videos, detailed drawings, digital images, and university research regarding BMPs implemented in the linear environment. A special emphasis will be placed on the use of flocculants for treating construction site runoff.
Linear projects offer unique challenges regarding erosion and sediment control design, execution, and implementation as compared to grid based development. Long linear projects impact multiple watersheds with varying degrees of environmental sensitivity and needed protection. Water quality protection is a constant challenge. Rights of way are constrained requiring the use of construction easements to install erosion and sediment control practices leaving little room for error in controlling and managing runoff. This workshop places a focus on planning for and adding margin to the design and specifications to provide supplemental protective features.
An erosion, sediment, and turbidity control toolbox for linear projects provide different options for the construction stormwater professional. This class will present examples such as the tiered skimmer basin that is used where topographic gradient along linear section are so aggressive, the practice must be excavated and installed in a series of tiered flat bottom sections. Practices from the forestry management discipline such as water bars have been adapted and used on pipeline/powerline applications. Practices to dewater the construction work zone will maintaining traffic will also be introduced.
North Carolina Department of Transportation’s National Pollutant Discharge Elimination System (NPDES) Transportation Separate Storm Sewer System (TS4) Permit requires the department to conduct research on pollution prevention as one of its six Minimum Control Measures. The workshop will include several research summaries and case studies where field laboratory work has been validated with instrumentation and implementation on linear construction sites on topics such as mulching products, tackifiers, scarification, infiltration, polyacrylamides, fiber check dams, porous baffles, and surface dewatering skimmers. Many of the research ideas have shown to reduce erosion, sediment, and turbidity on linear projects and have been implemented by regulators for all land disturbing operations in the state.