It has been found that surplus soil and sludge generated from civil engineering and construction work contain various types of harmful heavy metals, although these are naturally occurring substances.
In particular, soil often contains As, Pb, F, B, and even Se and Cr+6, and proper treatment must be carried out in accordance with the Soil Contamination Countermeasures Act when dealing with soil containing these substances.
One such treatment is an immobilization process that suppresses the leaching of harmful heavy metals.
'TM Guard AL-1' is highly effective in rendering these harmful heavy metals insoluble.