Applied Polymer Systems, Inc.

March 2010

Chicago O'Hare Water Clarification Project
by Ero-Tex and Price and Company

The South Basin of the Chicago O'Hare Airport was holding 75 million gallons of turbid stormwater. Ero-Tex was enlisted to help the City of Chicago come up with a way to clarify the stormwater before discharge without impeding any of the construction activities that were taking place. The water was being pumped at 6,000 GPM by a 12 inch pump. Ero-Tex worked with Kiewit -Reyes to set up a system that would pump the water from the basin, through twin 66 inch pipes, into the basin's outlet structure.

Floc Logs were placed in the 1,100+ foot pipes, Erosion Eels TM were used to create mixing and organic netting was installed on the down gradient of the pipe to capture the flocculated particulate. The system pumped 24/7 for 3-4 weeks, yielding excellent results. The system was such a success that other storm waters were directed to the South Basin so they, too, could be clarified.

To read the entire case study, click here.

For more details on how to use Silt Stop Powder, Floc Logs, and other APS products, visit our website, www.siltstop.com.

Look for Proper Use of Polymers in Dewatering Systems to appear in the March/April Issue of Land and Water. This and other projects are featured in the article.

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At the IECA Environmental Connection 2010 Conference last month, everyone was abuzz about the new EPA ruling on the Effluent Limitation Guidelines.

This year, at EC10, there were two presentations on the use of polymers in erosion and sediment control.

Click below to read the papers presented.

Polymer-Enhanced Soft Armoring: An Erosion and Sediment Control Measure for Construction Fill Slopes presented by Wesley Zech, Auburn University

Polymer Enhanced Best Management Practices for Erosion and Sediment Control, Water Clarification with a Focus on Nutrient Control, and Stabilization presented by Seva Iwinski, Applied Polymer Systems

If you missed the IECA Environmental Connection in 2009 then you missed an excellent presentation by Jerry Fifield on using PAM to reduce the size of sediment basins.

Designing an Effective SCS by Treating Sediment with Polymers

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Free APS Training

Applied Polymer Systems, Inc. offers training classes on Polymer Enhanced Best Management Practices, applications, polymer basics, and in-field product demonstrations. If you or your company are interested in setting up or attending a training session, please contact us by email.

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A Report From the Field

By Skip Ragsdale, Sunshine Supplies

APS Distributors work with people in all industries all over the United States. Just recently, Sunshine Supplies in Alabama helped a group on a project in North Central Alabama. On this site, 102 inch diameter holes were being bored to create footings for bridge supports. This process uses bentonite clay as a lubricant for the bits (teeth) on the 102 inch drill. The bentonite clay is mixed with water and as more water/bentonite is added, some of the mixture must be removed from the hole or it would overflow. The excess is pumped out of the hole and into a baffle box that removes the heavy particles. As the baffle box overflows, the material goes down a channel.

The site had check dams with geotextile fabric in place to “filter” the material, but it didn’t stop the fine particulate from reaching the creek below. The channel was bare, red, clay, soil and this added to the problem. It was imperative stop the red clay from eroding and also take the bentonite out of the flow.

Sunshine Supplies applied APS 705 Silt Stop Powder on the red clay material, and then placed 450 linear feet of jute matting in the channel. Then, APS 740 Silt Stop Powder was applied to the top of jute mesh where the bentonite clay slurry would flow. When the bentonite slurry went down the channel, the red clay subsoil material did not add to the flow and the bentonite clay attached to the jute. Thus, only clear water reached the creek.

New PEBMP Application Guide Available

Contains 3 New Systems:

Tanks

Dewatering Bags

Large Scale Dredging Systems

Get your new guide today!

**Why is mixing important?**

When using Floc Logs to treat turbid water the most important factor is mixing. Without proper mixing, Floc Logs will swell into a gelatinous block and a reaction will not occur. As water moves over and around the Floc Logs the log components are released into the water column. The polymers then attach themselves to the fine sediment particles to create larger agglomerated particulate that easily settles out.

In a report completed by the Stormwater Management Academy for the Florida Department of Transportation, quantified data has shown just how important mixing is when using Floc Logs. In their research, they tested the 703d Floc Log at various concentrations. In addition to various concentrations, the flocculation efficiency was measured. The results clearly showed that as the speed of the mixing increased, there is an increase in the flocculation efficiency. To read this report in full click here.

Table from http://www.dot.state.fl.us/research-center/Completed_Proj/Summary_SMO/FDOT_BD521-5_rpt.pdf

Calendar of Events

April 8, 2010: Environmental Expo, Lake Buena Vista, FL

April 19, 2010: 2010 Design/Build for Water/Wastewater Conference, Dallas, TX

April 21, 2010: 2010 Design/Build for Transportation Conference, Dallas, TX

April 23, 2010: ASCE Water Resources Committee Annual Seminar, Orlando, FL

April 27, 2010: Muddy Water Blues, Jay, FL

Visit our News & Events section to get up to date scheduling for training events and conference attendance.

Applied Polymer Systems | 519 Industrial Drive, Woodstock, GA 30189 | www.siltstop.com