News

A U.S. Policy overview of regulatory framework and mechanics of mitigation accross all regions of the United States.  An ancient technology, now a Green Infrastructure (GI) technology, allows water to pass directly through into an underground aggregate reservoir, where it can be naturally filtered and slowly returned either to the existing stormwater infrastructure or , Bruce K. Ferguson, the authors professor at the University of Georgia, said, "Get it back in to the ground where it belongs". This simple yet revolutionary concept directly confronts the environmental legacy of our modern paved world.

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The City of Charlotte recently updated their development standards that lower the built upon area threshold (BUA) to 5000 square feet for development and re-development that cumulatively disturb less than one acre. BUA credit will be given for porous pavements whereby 100% credit can be obtained. Statewide regulations of North Carolina also provide 100% credit for properly designed and installed porous pavements unless in a more restrictive local jurisdiction.

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Infiltration of rain events is a basic ecological process that has provided our communities with clean reliable water resources since the beginning of human settlement. The practice of stormwater infiltration in the U.S began nearly a century ago. Since the 1930’s monitoring of these practices have documented beyond question it’s contribution to valuable potable ground water supplies to settlements across the country. .
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Pools at culvert outlets can occur naturally in a stream as part of the “riffle-pool sequence” with culvert crossings acting as riffles. This sequence provides a dynamic check and balance system for regulating velocity and reducing erosion. Correctly sized plunge pools are self regulating and therefore maintain themselves. Pools also improve habitat diversity and serve as refuge for aquatic species during low flow periods. .
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After more than 40 years of research documenting detrimental effects of impervious surfaces on the environment and a decade of honing our infiltration knowledge for different soil types, infiltrating pavement has become a mainstream storm water best management practice (BMP).
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Infiltrating pavement such as pervious concrete that is designed and installed correctly is now considered 100% pervious statewide and is not included in Built Upon Area calculations.
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Estes will be presenting on stormwater infiltration and permeable pavement at Auburn University on May 11, 2017.
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Estes will be presenting on stormwater infiltration and permeable pavement in Charleston SC on May 15, 2017.
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Estes will be presenting at the IECA Conference in San Antonio on February 2016 on reversing the History of Urban Hydrology, Pervious Concrete and Infiltration.
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Estes has collaborated with Auburn Unversity to produce a second online course on Urban Hydrology & Pervious Concrete and Stormwater infiltration. 
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Estes will be presenting at the IECA Conference in San Antonio on Reversing the History of Urban Hydrology, Pervious Concrete and Infiltration
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Estes Presented at the MS4 We Weather Conference on Reversing the History of Urban Hydrology, Pervious Concrete and Infiltration.
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Estes Testified before a legistlative subcommittee co-chaired by Rep. Ruth Samuelson.
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