POLLUTEv7 7.11 that could have been downloaded from our website for free. The actual developer of the program is GAEA Technologies Ltd. The software lies within Education Tools, more precisely Science Tools.
From the developer:
With more then fifteen years utilization in industry, POLLUTEv7 is a well tested contaminant migration analysis program which is widely used in landfill design and remediation. Landfill designs that can be considered range from simple systems on a natural clayey aquitard to composite liners, multiple barriers and multiple aquifers.
You may want to check out more software, such as Panel, gitoolbox or roboBASIC, which might be similar to POLLUTEv7.