Alabama Soil and Water Blog Spot

  Instead of raised islands in a parking lot, why not use a depressed island (Bioretention Swale or Bioswale).  This allows for some stormwater runoff to infiltrate the soil, decreases the peak runoff, decreases the volume of runoff, and allows for smaller stormwater pipes.  Makes sense to me.   Remember: The Early Bird rates for Clear Water Alabama 2024 end August 15, 2024.   Perry L Oakes, PE Program Coordinator AL Erosion and Sediment Control Program  

  Sediment Basins and Detention/Retention Basins have embankments that are prone to fail when not properly designed and installed.  Failure most times is related to the pipe through the embankment. It could be the wrong pipe, improper pipe placement, poor compaction around the pipe, lack of seepage control, or many other causes. Remember that the ponding of water, no matter how small, is an inherent danger to downstream property and needs to be done right.    Perry L Oakes, PE Program Coordinator AL Erosion and Sediment Control Program