Watershed Geo Blog

Handling Concentrated Flows on Landfill Closures

Handling Concentrated Flows on Landfill Closures

In most landfill closure designs, water flow is directed off the top deck to steep downchute channels in order to prevent erosion and eliminate ponding.  Common materials for these lined drainage channels include rock riprap, concrete lining and drainage pipe.  These...

Advancements in Prescriptive Covers

Advancements in Prescriptive Covers

  WHY ARE  FUNDAMENTAL FLAWS BEING OVERLOOKED IN LANDFILL CLOSURE DESIGNS? By: Paul O'Malley If we look back at the origins of RCRA’s Subtitle D and the genesis of what we now commonly refer to as a “prescriptive cover”, it is worthwhile to remember that the...

PROJECT PROFILE: UNLAYERING A CHANNEL IN DISTRESS

PROJECT PROFILE: UNLAYERING A CHANNEL IN DISTRESS

Faced with conditions such as steep slopes, soft sandy soils, a heavy sediment load and very shallow utilities, HydroTurf® was placed head to head with rock riprap…and won.   The Town of Parker, Colorado, faced a number of challenges with the Robinson Ranch swale...