Contaminated groundwater sites worldwide are engaged in regular sampling of monitoring wells at a typical cost of $1,500 per well-sampling event.
Many wells are redundant or geostatistically insignificant and can be decommissioned.
EVS-PRO’s Well Decommission module analyses all available data and quantifies the impact on site assessment quality of removing each well.
Step One: Perform a Baseline Analysis Using All Well Data
Baseline Results Show Statistical Variation in Plume Area
(red-max, green-nominal, blue-minimum)
Well MW102 Removed
Well MW7W Removed
Well MW7B Removed
The three figures above demonstrate that some wells have a profound effect on site assessment.
Well decommission final results for Pentachlorophenol Target Isolevel = 5.00 Maximum Area Deviation. Data provided courtesy of U.S. EPA Region 5.
The final output shows each well colored by its impact on the site contaminant area in square feet.
EVS-PRO’s Well Decommission technology provides a defensible approach to determining candidate wells for decommissioning. Each decommissioned well can save thousands of dollars per year.
The nominal contaminated area is 1,835,263 square feet. Removing MW18B affects area determination by only 0.026%.
Removing MW18B would have an insignificant impact on Site Assessment
Removing MW102 would have a profound impact on Site Assessment
