Silt Screen to Prevent Contamination
Backyard Project with Silt Screen
Question: We are doing a project in our backyard which requires a silt screen to prevent a contaminant from getting into a stream corridor. I don't know what I'm looking for or what to call it. The DEC advised us to use silt screens along the boundary of the water's edge.
We want to build a retaining wall to replace existing levels. We were told we needed the netting in case of spills or contamination into the waterway. The length across the back yard is approximately 60 feet. Can you help me with this?
Answer: You can certainly use a silt screen to prevent contamination. GEI Works has a number of erosion control supplies that could work in your situation.
There are two different types of silt screens—land-based and water-based. Each is useful depending on the application and location.
Land-Based Silt Screen
With a land-based silt fence, a permeable geotextile fabric is erected between wooden stakes along your project area. When the water from your site reaches the barrier, contaminants are kept by the fence while water flows through.
Another land-based option is the staked turbidity barrier. A staked turbidity barrier is similar to the silt fence except it is impermeable. The runoff is directed completely away from the stream. This will only work if you have a designated location to send your contaminated water.
See more information on the Staked Turbidity Barrier.
Water-Based Silt Screen
The water-based silt screen, called a turbidity curtain, is placed in the water to control suspended particles in the water and prevent them from spreading. Any contaminants from your project would settle and stay in the designated area.
For more information about the two types of silt screens, visit our Silt Screen for Erosion Control page.
Natural Filtration with Coir
Coconut coir fiber products are another effective and economical option. Made from 100% biodegradable coconut coir fiber, you could use coir logs to prevent silt from contaminating the stream. The coir products line the stream, stopping any pollutants from entering.
The type of erosion prevention method that's best for your project will be determined by the specifics of your work area and building requirements. Coir logs can also be used to help build a retaining wall, and its natural fibers allow vegetation to take root.
Check out our different coir products:
To read more about coir, visit our Top 6 Uses for Coir Erosion Control Supplies blog post.