### Model of remediation pumping (without sorption)

The remediation is done by pumping the polluted groundwater by means of wells SAN-1 to SAN-3, HP-104,HP-113 and HP-114. The total yield of all six wells was set to 0.222 l/s. The model presumed only one significant pollution source with its position being a machining shop. The model originated from the pollution state after 50 years of pollution transport. Remediation should be run for 6 years. The model to determine the degree and the spread of pollution was actually done for 56 years (50 years of transport of pollution without remediation and 6 years with remediation). The pollution cloud is torn apart during remediation due to the hydraulic effect caused by the remediation pumping that holds the pollution cloud near the intersection of the tectonic lines. The front of the initial cloud was not effected by remediation actions and it kept on following the tectonic line towards the pond. This torn-away cloud has concentration of 30-40% in it centre; the front of the cloud with a concentration of 10% has moved 45 m towards the pond after 6 years of remediation. The velocity of the front’s move is about 7.5 m per year. The remediation has a positive influence on slowing the secondary pollution spread to the north. The front of this cloud was drawn back by 10 m because of remediation towards the tectonic intersection. The concentration in the close neighbourhood of remediation wells decreased 1 to 10% in 6 years of remediation. The centre of pollution is predicted to be between wells HP-117 and HP-110.