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Evaluation of Inlet Protection Practices using Large-Scale Testing Techniques

This technical presentation will showcase current ongoing research and large-scale testing efforts focused on improving existing storm drain inlet protection practices. The study, being conducted at the Auburn University Erosion and Sediment Control Testing Facility (AU-ESCTF), includes the investigation of typical roadway median inlet protection practices (i.e., aggregate barriers, sand bag barriers, silt fence barriers, wattle barriers, and manufactured practices) for protecting drop inlets during construction activities. Effective inlet protection practice needs, developed testing procedures, data collection practices, performance characteristics, and results will be discussed.
Date:
May 01, 2015
Member Price:
$50.00
Nonmember Price:
$65.00
Available for Immediate Download
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From Trash to Treasure

White Island, an 80-acre former municipal landfill located in Brooklyn, New York, is one of the first grassland mitigation projects required by New York State. The former landfill was constructed on historic marsh land and exhibited severe shoreline erosion due to wave action and tidal flux. Additionally, over 80 percent of the island was dominated by invasive species. The project involved bioengineered shoreline stabilization, invasive species control, and grassland habitat creation. The project served as mitigation for the loss of 56 acres of maritime grassland habitat due to construction of a nearby Housing Development and Retail Center. The NYSDEC determined the loss of grassland habitat was a significant adverse impact on several bird species and the creation of new maritime grassland habitat on White Island was required as compensatory mitigation. The main objectives of the restoration design were to: œ Improve shoreline stability; œ Control invasive species; œ Create habitat for rare or special-status species; and œ Increase biodiversity. While traditional armoring could have been used, vegetative bioengineering stabilization practices were selected to provide a connective vegetated zone along the shore for wildlife use. The vegetation also provided a long-term and low maintenance solution for the island site. A combination of a cellular confinement system and articulated concrete blocks were used to provide additional stability while the plants were establishing. The design incorporated several vegetative zones to provide suitable diverse habitat for ground nesting avian species, while supporting habitat for other wildlife. The vegetative zones were designed to provide contiguous acres of suitable grasslands habitat, maximize edge diversity, provide shelter and control erosion. Over 150,000 cubic yards of sand was installed across the island surface to create a planting substrate free of invasive species for the colonization by a variety warm-season grasses. Immediately following construction, the east coast was struck by Superstorm Sandy. The lessons learned from this extreme testing of vegetated shoreline stabilization techniques will be discussed.
Date:
January 16, 2019
Member Price:
$50.00
Nonmember Price:
$65.00
Available for Immediate Download
↑/↓ Full Details




Implementing a SWPPP - Easy, right?

The design is complete, the permits have been obtained, and contracts are in place for contractors. It's time to get construction started! What could possibly go wrong? A SWPPP, stormwater pollution prevention plan, is a best guess about how the construction site will begin, progress and finish based upon the information that the design has before construction. However, it is rare that construction progresses as the designer envisioned. When implementing a SWPPP, expect to encounter the following: - The contractor will have a different - and possibly better - way of grading the site, along with a different construction sequence. - The unforeseen will be uncovered and it will impact the construction schedule. - Not all parties on the construction site will agree on E&SC or stormwater management for the site. When implementing the SWPPP, the inspector/site manager must adapt to these issues while still meeting the intent of all permits. SWPPP modifications. There is no perfect SWPPP. All SWPPPs will need revision and modification during construction. Some states do not require that plans be resubmitted when modifications are required. Other states do require plan submittal and approval. Know your state's requirements - and any professional requirements. In most states, professional engineers are the only people licensed to design pipes and embankments (think sediment basins and culverts). The SWPPP must reflect what's on the ground and vice versa. For example, when silt fence or check dams are removed when they are no longer needed, the SWPPP should be modified to show that these measures have been removed. Inspection documentation should also indicate that the measures have been removed and why they were removed. Together, the modified SWPPP and inspection documentation should clearly tell the story of the site conditions at the time of the inspections. Take photos of the site as well to confirm site conditions. Documentation. As the SWPPP is revised or modified, document the changes on the SWPPP sheets, in inspection reports and with photos. Documentation is critical to show compliance. The construction general permit allows time for a contractor/developer to respond to problems found on a construction site, and if the problems are resolved within that timeframe, the site is in compliance. Note that some states have additional regulations governing construction sites and off-site sedimentation can be considered a violation of the regulation, regardless of storm size. Besides SWPPP modification and inspection reports, a site manager/inspector must also keep good documentation of rain events. The Construction General Permit requires that measures be designed for the 2yr, 24hr rain event. To determine the return interval for each storm, document the time a storm started and ended and the depth of rain. That information can be compared to rainfall information provided on NOAA's Atlas 14 Point Precipitation Frequency Estimates website (https://hdsc.nws.noaa.gov/hdsc/pfds/pfds_map_cont.html) to determine the storm's return interval. Site managers/inspectors should use the rainfall data to make decisions about the failed measures. If measures failed in a storm that exceeded the 2 year storm equivalent intensity, the measures were adequate and should be reinstalled. If measures failed in a storm that was less than or equal to the 2 year storm event, the measures should be upgraded. can be compared to the rain fall information on NOAA's Atlas 13 site to determine the equivalent intensity storm. As a final good practice on a construction site, provide feedback to the designer about the site: what worked well, what didn't work well. If that information is not conveyed to the designer, the same issues may occur on other construction sites.
Date:
June 01, 2018
Member Price:
$90.00
Nonmember Price:
$120.00
Available for Immediate Download
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Improving Infiltration & Vegetation in Post-Cons

This webinar will highlight treatment technologies that can be implemented in the construction industry to manage turbidity from dewatering operations. Dewatering methods are briefly introduced; however, the course focuses on best available technologies to treat and polish pumped effluent. Participants will be exposed to a decision matrix that assists in identifying the appropriate treatment for a site specific operation. Upon selection of the treatment, basic design elements are presented for consideration. The webinar targets a broad based audience who can use the information provided as a foundation to then independently research a specific treatment technology in more detail.
Date:
December 01, 2015
Member Price:
$50.00
Nonmember Price:
$65.00
Available for Immediate Download
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Introduction to Erosion and Sediment Control

This course has been developed to introduce participants to the concepts of Erosion and Sediment Control (ESC). It is intended for contractors, developers, consultants, municipal staff, landowners or anyone looking to gain a general knowledge of erosion and sediment control concepts and best management practices. The course is comprised of eight modules and discusses the potential impacts of construction activities, ESC fundamentals, erosion control practices, sediment control practices, in-water and near water works, pollution prevention, winter preparedness and legislation.
Date:
May 01, 2016
Member Price:
$75.00
Nonmember Price:
$100.00
Available for Immediate Download
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Lessons in LID Construction

Low Impact Development (LID), an innovative stormwater management approach that treats, infiltrates, filters, and retains runoff at the source, is quickly becoming the new norm in Ontario. Construction of LID practices involves techniques and specifications that differ from traditional stormwater management construction practices. Failing to follow proper LID construction methods can result in barren bioretention landscapes, clogged infiltration practices, uneven permeable pavements, and ultimately costly post-construction repairs.
Date:
June 01, 2017
Member Price:
$50.00
Nonmember Price:
$65.00
Available for Immediate Download
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Lessons Learned from 46,000 ESC Inspections

Every day, 1,000's of construction site erosion and sediment control inspections are recorded by public and private inspectors across the country. Wouldn't it be helpful to compile and analyze the results of those inspections? This discussion summarizes analysis of inspection data recorded in over 46,000 construction site erosion and sediment control inspections on residential, commercial, municipal and large grading projects over a period of more than eight years.
Date:
March 01, 2016
Member Price:
$50.00
Nonmember Price:
$65.00
Available for Immediate Download
↑/↓ Full Details


L'introduction au contrôle de l'érosion et des sédiments (CE

Ce cours a été développé pour initier les participants aux concepts de contrôle pour l'érosion et des sédiments (CES). Il est destiné aux entrepreneurs, promoteurs, consultants, employés municipaux, propriétaires ou pour toute personne cherchant à acquérir des connaissances générales sur les concepts pour le contrôle de l'érosion et des sédiments et les pratiques optimales de gestion. Le cours comprend huit modules avec des discussions sur les impacts potentiels des activités de construction, les bases pour le CES, les pratiques pour minimiser l'érosion, les pratiques pour la gestion des sédiments, les ouvrages dans l'eau ou près de l'eau, la prévention de la pollution, la préparation hivernale et la législation.
Date:
May 01, 2016
Member Price:
$75.00
Nonmember Price:
$100.00
Available for Immediate Download
↑/↓ Full Details