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Stormwater Low Impact Development Practices • Part One & Part Two

Low Impact Development (LID) practices are Best Management Practices (BMPs) developed for managing stormwater runoff from land development sites. LIDs are used (1) to facilitate infiltration of site runoff and (2) to provide treatment of the runoff, thus improving the quality of the runoff entering the local streams and the groundwater. Many LIDs have been developed and are being prescribed by designers and installed by contractors on land development sites. Each has advantages and disadvantages that must be considered if the LID is expected to perform properly. This series will focus on the design and expected function of Bioretention Cells (Rain Gardens) and Green Roofs.
Member Price:
$75.00
Nonmember Price:
$100.00
Available for Immediate Download
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Stormwater Runoff

This course explores the critical factors in measuring and assessing stormwater runoff. Topics addressed are: assessment of runoff curve numbers, and applying and calculating that curve number for your construction site.
Member Price:
$50.00
Nonmember Price:
$65.00
Available for Immediate Download
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Technical Design and Construction for Construction Field Personnel

This pre-recorded webinar is designed to give field construction personnel a basic understanding of the Best Management Practices that are commonly used to control and reduce erosion and sedimentation from storm water runoff on construction sites. The proper use and placement of BMPs, along with the critical details of construction will be presented. In addition, the webinar will address the administrative aspects of the NPDES (and state issued) permit process that must be performed in the field. These processes include proper inspection and record keeping, and maintenance and control of documents that are required to be kept on site. This webinar is targeted to all levels of field personnel expertise. Junior level field mangers will derive a basic knowledge of the NPDES requirements, while more experienced field managers will receive instruction that will allow them to better analyze the erosion and sedimentation control design for a project and make them a more effective “last check” on each project’s compliance with the DPDES, or state issued permit.
Member Price:
$50.00
Nonmember Price:
$65.00
Available for Immediate Download
↑/↓ Full Details


The Important Role of Vegetation in Stormwater Management

Vegetation is Nature’s best management practice (BMP) for controlling erosion, yet when we discuss BMPs, we are often focused on structural practices that reduce erosion and/or remove sediment. This webinar will focus on the important role that vegetation plays in stormwater management during and after construction and will present new guidance developed in Colorado that covers many fundamentals of successful revegetation and could be adapted to other regions. Dr. Earles will discuss the different hydrologic, physical and biological processes that make vegetation an effective BMP. Students will leave the webinar with a renewed appreciation for vegetation and the key role it plays in effective stormwater management.
Member Price:
$50.00
Nonmember Price:
$65.00
Available for Immediate Download
↑/↓ Full Details


Tillage as a Stormwater Practice

Soils are often a neglected part of stormwater planning, although they can be a big asset. Post-construction soils are commonly in poor physical condition with little fertility to grow grass or other plants. In this webinar, we will discuss ways to assess soil condition and methods to create the environment for reduced runoff and enhanced plant growth.
Member Price:
$50.00
Nonmember Price:
$65.00
Available for Immediate Download
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Turbidity Control by Chemical Flocculation: Basic Concepts

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. In the first part, McLaughlin will discuss ways to make typical practices work much better and then explore the turbidity problem and how chemical treatment can solve it.
Member Price:
$50.00
Nonmember Price:
$65.00
Available for Immediate Download
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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!
Member Price:
$50.00
Nonmember Price:
$65.00
Available for Immediate Download
↑/↓ Full Details