Chapter Newsletters

July 2024

  

COLLABORATE TODAY.  SUSTAIN TOMORROW.

Proper Turbidity Barrier Installation in Rivers
Submitted by Ryan Henderson, Product Specialist at Aer-Flo Environmental

When installing turbidity barriers in rivers special attention needs to be given to how the barriers are configured and oriented in the water. The placement of turbidity barriers directly across streams and rivers is never recommended. Crosscurrents place extreme loads on the turbidity barriers and will push the barriers to the surface, preventing them from containing any sediment. Beyond that, the barriers will often be damaged, destroyed, or swept away. Turbidity barriers installed perpendicular to water flows incur excessive forces and loads.

Turbidity barriers should always be installed in a configuration that is more parallel to the flow of water.

Figure 2: Current less than 3ft/s
This depicts a site with one directional current of 3 feet per second or less running parallel to the shoreline. This site will require Type 2.DOT turbidity barriers. The anchors will be placed on the upstream side of the barrier. The sag in the barriers is designed to reduce the anchor and cable loads.

Figure 3: Current 3ft/s to 5ft/s 
When the current is greater than 3 feet per second, the barriers should be installed in this configuration. Type 2.DOT turbidity barriers are required, and careful analysis of anchor and cable loads must be made. The effectiveness of barriers in this configuration is less than expected from other types of sites since the water current will carry much of the sediment under the curtain.

If the current of the water is greater than 5ft/s turbidity barriers are not recommended. Even if turbidity barriers are successfully installed in water moving this fast without being damaged or swept away, the effectiveness of the barriers to contain sediment will be negligible. The Army Corp of Engineers research and study of turbidity barriers determined that there may be some sites where the water conditions are too extreme for turbidity barriers to be used.

Registration is now open! Join us for the IECA Northeast & MAC Regional Conference September 9 - 11, 2024 Scranton, PA
https://whova.com/web/nVhI78UlLUfoGpliKCdtujzxw34LzhaghHrGUbbXRSA%3D/

If you enjoy early networking check out these preconference activities taking place on Monday, September 9, 2024.

6th Annual MAC-IECA 'Tom Masters' Memorial Golf Tournament


8:30 AM – 1:30 PM at Pine Hills Country Club
140 S Keyser Ave, Taylor, PA 18517


Golf fee is $110 and includes driving ranch access, greens fee, golf cart, on-course lunch, post-round appetizers, raffles & prizes for 1st, 2nd, 3rd places and long drive/closest to pin competitions.

 .

'The Office' Walking Tour


1:30pm-4:30pm
Additional fee of $15 members | $20 nonmembers
Limited Space, Register Early


Scranton, PA is home of the hit tv show ‘The Office’ and this guided approximately two mile tour will feature many iconic locations with plenty of memorable photo ops.
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