日方申请进入美军基地调查污染源 美军：拒绝！

Core Viewpoint - The U.S. military has officially rejected Japan's request to investigate pollution sources at military bases in Okinawa, despite evidence of contamination from per- and polyfluoroalkyl substances (PFAS) in nearby water bodies [1][2]. Group 1: Pollution Issues - Multiple U.S. military bases in Okinawa have been found to have water bodies with PFAS levels exceeding safety standards, with one spring near Kadena Air Base showing concentrations 32 times higher than Japan's provisional national standard [1]. - Since 2016, Okinawa Prefecture has made four requests to enter U.S. military bases for pollution investigations, all of which have gone unanswered until the recent formal rejection [1]. Group 2: U.S. Military's Position - The U.S. military claims there is no scientific evidence linking its bases to the contamination and that there are no unified standards between Japan and the U.S. for determining pollution levels in water and soil samples [1]. - The U.S. military also declined a request for an environmental investigation at the Futenma Air Station, stating it would not be conducted [1]. Group 3: Historical Context - Similar incidents of PFAS contamination have occurred at other U.S. military bases in Japan, including at Yokota Air Base, where at least seven wastewater leakage incidents were reported from 2010 to 2023, with the U.S. military denying responsibility [2].