Among the performed tests for the assessment of the impact on the environment the leaching test and acute
toxicity tests were carried out. Both tests are included in the relevant legislation for the use of treated waste on the
surface. All the tested solidification products (SPs) meet the requirements for the classification in leachability class
IIa according Regulation No. 294/2005. The obtainment of minimum leachability of contaminants at maximum
strength and also the provision of its long-term durability are basic requirements expected from SPs. Even after the
solidification is carried out, contaminants (etc. lead, cadmium, hydrocarbons C10 - C40) will still occur in the SPs
but by the effective solidification there will be no release into the environment, as these contaminates will be
firmly incorporated in the matrix of SPs.