Most of us understand the background of Low Impact Development (LID). Produced in Prince George's County, Maryland in the early'90s, embraced throughout the Chesapeake Bay, slowly embraced in the Northwest and the Great Lakes, and currently picking up steam and moving shore to shore.
It is a significant part of the coming post-construction rulemaking and TMDL answers; and it's recognized as a crucial piece to solving our water quality, quantity, and speed woes as well as fulfilling our sustainable low influence development objectives.
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But it is not all sunshine and rainbows. Those people who are professionals in the area of stormwater know that issues exist using the dominant BMP employed in LID layout, bioretention/ biofiltration systems. Reasons for these issues abound.
Over-reliance on 20-year-old design advice, just plain awful soil networking layouts, inexplicable, however frequent deficiency of quality controls on land media manufacturing and system setup, small or no field verification of functionality, and the list continue on and on.
The outcome is intolerably large failure rates; in certain regions, failure rates are as large as 50%, for that critically important BMP.
One crucial reason is that the sector has lagged in commercializing bioretention options as it's for additional Low Impact Development techniques including Water Harvesting Systems, Green Roofs, and Porous Pavement, to mention a couple.
This site is a three-part series based on my six decades of expertise with the design and structure of biofiltration techniques, and that which I've learned in the procedure.
I will also speak about our search to commercialize an economical biofiltration alternative that's far superior to conventional designs concerning economics, reliability, quantity management, and above all the water quality benefits are ushering in a flourish in next generation' LID options for stormwater.