SHINYEI-OYO can contribute to issues of nature-derived heavy metals associated with various construction projects. Initially, those issues came from mountain tunnels going through mineral deposit zones. But currently, urban cases regarding heavy metals eluted from marine sediments are increasing.

Actually, heavy metals are distributed all around in Japan. The relatively familiar examples of nature-derived heavy metals are Yurakucho Formation (arsenic, fluorine), Miura Group (arsenic), Kazusa Group (arsenic).

A geological formation underground is dug up in a tunnel excavation construction, and heavy metals are eluted from excavation muck exposed on a ground surface. We are getting to know that heavy metals should be classified as “eluted instantly” and “eluted with a time difference”. In this context, “time” and “water” are important factors on construction. SHINYEI-OYO can proceed construction swiftly and safely.

SHINYEI-OYO manages excavation muck appropriately based on various construction manuals, and contributes to prevent soil/groundwater contamination.