### Model of transport of pollution during remediation pumping

The picture shows the results of the simulation of pumping from well HSJ-1 for 2 months. After a longer time the pollution does not change. This means that a longer remediation has no significant effect on the pollution’s concentration. The comparison tells us that a relatively large yield of 18 l/s causes a reduction in the pollutant’s concentration by one half in 2 months. Continuing remediation leads only to a marginal decrease in concentration, thus the long-term pumping from well HSJ-1 is ineffective. On the other hand, cessation of pumping can lead to a spreading out of pollution in the area.