| Popis: |
A main aqueduct of municipal sewage system at Tsukuba area in Ibaraki prefecture had been constructed by the Shield Method. When the construction of the main aqueduct was almost completed, several inhabitants who were residing in a zone along the route of construction with distances of 15-350 meters from the aqueduct had brought a suit that they have had attacks of diseases to be caused by contaminated well water with constituents of soil stabilisation chemicals applied in the construction. The accusers claimed that a large quantity of constituents of soil stabilisation chemicals was removed from applied location into underground water and spread to a wide area, and transferred to many different aquifers through gaps made by the construction of the aqueducts in impermeable layers, thus it resulted that well water in each well hole they were availed for drinking were contaminated with constituents of soil stabilisation chemicals, and this contamination orignated the diseases which attacked them. The points around connections of disease and the constituents of soil stabilisation chemicals, effects of constituents on the quality of well water and velocity of underground water movement were disputed in the court. The present auther gave an expert opinion that no evidence of contamination by stabilisation chemicals on the quality of well water. The judgement approved our opinion that the constituents of soil stabilisation chemicals did not cause health damages of accusers and delivered in favor of the defendant perfectly. |
