our services
Groundwater & Product Recovery Trenches (GWCT)
Contaminated Groundwater Recovery, Leachate Collection, Slope Stability Interceptor Trenches, Etc...
DeWind’s flagship service “The One-Pass Groundwater Recovery System” (also known as Groundwater Collection Trench or Seepage Trench). This complex multi-tasked One-Pass operation was developed by DeWind exclusively for installing DEEP groundwater and product recovery systems in a single pass. DeWind One-Pass Trenchers are designed to set a large diameter stainless steel sump casing, pre-connected to a horizontal slotted HDPE SDR 11 collection pipe. The sump is set, and the horizontal collection pipe is installed on a precise grade at the bottom of the trench while being backfilled with a wall of stone to the surface. The entire process is performed in a SINGLE simultaneous operation.
One-Pass Trenching Technology avoids the need for DEWATERING, PUMPING AND TREATING OF CONTAMINATED WATER, TRENCH SHORING, SHEETING, DANGEROUS OPEN EXCAVATIONS and management of large volumes of CONTAMINATED SPOILS! One-Pass installations are fast and safe.
Details & Benefits
- Trench Depths: up to 60′ deep (deeper with benching)
- Trench Width: ranges 12″- 48″ wide
- Installation Speed: 250-500 linear feet per day
- Benefits: No open excavation, no dewatering, no trench shoring, no mass excavations.
Can keep backfill down an average of 5 ft from surface if needed. In some cases dual backfill is possible
HDPE Slotted Pipe: 4”, 6”, or 8” pipe