The concentration of water leaking from a landfill to the aquifer below is 725 mg/lt. Permeability of the aquifer 3*10-5 m/sec, hydraulic gradient 0.002, effective porosity 0.23 and D*=1*10-8 m2 /sec: leachate to underground What could be the chloride concentration 1 year later, 15 meters away from the mixing point