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Carriage Hills
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Formerly a deeply eroded ravine resulting from discharge of stormwater into a natural ravine from a pipe & convey system installed prior to stormwater management requirements. Increased volumes & velocities exiting this pipe caused the level spreader/apron to fail and cut a channel up to 25’ in depth through the ravine, lowering groundwater tables and causing significant sedimentation to downstream habitats. Now, with a 440 foot Regenerative Stormwater Conveyance system in place designed and built by Underwood & Associates, the water has been brought back up to the surface and the one hundred year storm event is controlled easily without further erosion and delivery of sediments and pollutants to the natural stream below.
Photo Gallery
Pre-Construction
Post-Construction
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 Carriage Hills
Central Sanitation
Riva 400
Saefern
Aurora Hills
Holladay Park
Wilelinor Stream Valley
North Gray's Bog
Shipley's Choice
Howard's Branch
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