Netherlands

Site Conditions
– Source Areas & Groundwater Plumes
Netherlands –
1,4 Dioxane with plume in Silty Clay (TH:3-8 ft) & Sand (TH:20-30 ft)

1,4-Dioxane Plume
– Source area (>100 mg/L), Downgradient (<10 mg/L)

1,4-Dioxane Plume – 2-12m bgs
– Source area (>100 mg/L), Downgradient (<10 mg/L)

Installation – Feb, 2013

Shallow TreeWell units – plume 3-8 ft bgs

Deep (Straw) TreeWell units – plume 20-30 ft bgs

Hydrological Situation – Stopping vertical migration of shallow groundwater to deep aquifer

Effect on Plume

Dioxane plume in shallow aquifer is drawn toward phyto-containment area