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Vegetation Basics

Module two discusses beach and dune restoration and nourishment as an important component of proper coastal system management. Construction and maintenance of the components that make up the coastal system, such as dune restoration (including dune vegetation and sand fencing) and beach nourishment, are discussed in detail, including construction techniques and costs. The variety of techniques and equipment used to construct projects is discussed at length, including locating and analyzing compatible sediment material, which includes grain size, composition, and color, both from offshore and upland areas. Finding and transporting the best sediment material for the appropriate beach and dune system is a major focal point.
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What’s a Contractor to do When the Sediment Pond Does Not Work?

A good design, proper construction and frequent maintenance still offers no guarantee that a sediment pond will discharge turbidity-free discharge. So what can a contractor do to improve the effectiveness of sediment ponds, after it has been constructed according to design standards; but still will not accomplish its objective? Briefly I will discuss the complexity of runoff generated by Mother Nature. Then I will examine the benefits of five initiatives: upstream treatment, inflow diversion, pond slope stability, filtering berms and discharge techniques. While any one of these components will result in some improvement of discharge quality, the incorporation of all five components will significantly increase sediment trapping. Examples of each component will be illustrated. Coupling these components will be the key to success!
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Working in Waterways

Projects that involve construction activities in waterways are some of the most challenging ones that engineers and contractors face. These projects often involve obtaining permits from multiple agencies, engineering of temporary diversion measures, and development of strategies for stormwater control measures in what is often a space-constrained environment.
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