Discovery of More PFAS Should Prompt US Forces To Allow Base Investigations

Published in Ryukyu Shimpo
(Japan) on 6 March 2021
by (link to originallink to original)
Translated from by D Baker. Edited by Helaine Schweitzer.
In February, levels of PFAS that exceeded national interim guidelines were yet again detected in the tap water in Kin. This marks the second occasion such chemicals have been observed in the town's water after excessive levels of the organofluorine compound were identified at the same water filtration plant in June 2020. An investigation on March 4 detected yet more PFAS, this time at levels below the guidelines. Even so, we should not overlook this finding.

The prefectural government and town of Kin have been requesting an on-site investigation of the U.S. Forces Camp Hansen base since the PFAS were originally detected, as it is highly likely that the chemicals originated from there. The U.S. Marine Corps, however, continues to deny that the incident has any connection to their base and have refused calls to investigate. Does the Japanese government have any intention of establishing the truth in this matter? Allowing these questions to go unanswered equates to nothing but disregard for local residents.

How is it possible to protect the lives and health of residents in the town while the situation goes unaddressed? The cause of this chemical leak must be investigated, responsibility for the incident must be identified, and local residents must be given access to health checks. U.S. forces should immediately allow an on-base investigation and take appropriate action. This situation also demonstrates the need to revise the U.S.-Japan Status of Forces Agreement, which prevents investigations of this sort by Japanese authorities.

PFAS accumulate in the bodies of humans and animals because they do not degrade in the environment. In addition to being a possible carcinogen, they also affect birth weight. According to town authorities, a level of 59 nanograms of PFAS was detected in one of three tap water samples taken on Feb. 21 in Kin, exceeding the guideline level of 50 nanograms. A level of 180 nanograms was detected in two of the six water sources in the area.

A level of 70 nanograms was also detected in Kin in June 2020. The fact that this degree of contamination has been left as it is for a year and eight months is in itself extraordinary. The town and town council have repeatedly asked the government for its cooperation in conducting an on-base investigation to establish the cause of the contamination and to implement measures based on those findings. The town is accelerating efforts to construct a water pipe to switch all water to the prefectural bureau's supply to interrupt intake from water sources that exceed the guideline levels of PFAS.

It is not clear who bears responsibility for the problem, especially when progress has stalled on even establishing the central facts. Local residents are anxious to have health checks, and still nothing happens. Kin Mayor Hajime Nakama envisions an on-site investigation to determine the cause of the problem, then plans on appealing to the government to support health checks on the basis of the inspection's results.

The U.S.-Japan Status of Forces Agreement is the main obstacle to an on-base investigation. The “Framework on Environmental Stewardship” only permits Japanese authorities to enter a U.S. base once U.S. Armed Forces identify the cause of an issue themselves and report it to the Japanese authorities. If U.S. Armed Forces do not establish the cause, no investigation can take place.

The claim made by U.S. forces is that “a preliminary investigation did not identify any particular cause on the base relating to the high levels [of PFAS].” However, the U.S. has not publicly shared any of the investigation details, such as which sites it investigated, what if found and the level of PFAS that was detected. It would simply be irresponsible to take U.S. forces at its word when they have continued to act in bad faith.

If this contamination really has nothing to do with U.S. bases, then they have nothing to lose in opening themselves up to investigation. It is imperative that the Japanese government work to fundamentally revise the Status of Forces Agreement to allow Japanese authorities to enter bases when necessary.

All tap water at Camp Hansen is supplied by the prefectural bureau. It is simply unacceptable that U.S. forces are able to drink safe water while, likely due to the actions of the U.S. Armed Forces, local residents are forced to drink water that is contaminated.


<社説>金武でまたPFAS 米軍は基地内調査認めよ

国の暫定指針値を超える有機フッ素化合物PFAS(ピーファス)が2月に金武町の水道水から再び検出された。同じ浄水場の水道水から2020年6月にも指針値を超えるPFASが検出されており、今回で2度目だ。今月4日の検査では指針値内だったが看過できない。
 米軍キャンプ・ハンセンが汚染源の可能性が高いことから、最初に検出されて以降、県や金武町は立ち入り調査を求めてきた。しかし米海兵隊は基地との関連を否定、調査を認めていない。日本政府も原因を究明する意思があるのか問いたい。住民軽視だ。
 これでは町民の命や健康は守れない。原因を究明し責任の所在を明確にするとともに住民の健康調査が必要だ。米軍は即刻立ち入り調査を認め対策を講じるべきだ。また、調査を阻んでいる日米地位協定を早急に改定すべきである。
 PFASは環境中でほとんど分解されないため人や動物の体内に蓄積する。発がん性のほか、出生時の体重に影響が出る。町によると、2月21日に採水した3カ所の水道水のうち、金武区の1カ所で指針値50ナノグラムを超える59ナノグラムを検出した。同区の水源6カ所のうち2カ所では180ナノグラムを記録している。
 20年6月にも金武区で70ナノグラムを検出した。汚染状態が1年8カ月以上も放置されていること自体、異常だ。町や町議会は原因究明の調査とそれに基づく対策や立ち入り調査への協力などを国に再三求めてきた。町は指針値超えの水源からの取水停止と県企業局水への全量切り替えに向けた送水管の整備を急いでいる。
 しかし、責任の所在はいまだに明確にされず、原因の究明さえ進んでいない。この間、町民の不安は大きく、健康調査を求めてきたが一向に実施されていない。仲間一金武町長は原因究明のための基地内立ち入り調査が先で、その結果を踏まえて国に健康調査を求めていくとの考えだ。
 基地内立ち入り調査を阻んでいるのは日米地位協定である。日本側の立ち入りを認めている環境補足協定は米軍自身が原因と認め日本側に通報した場合に限り立ち入りを認めている。米軍が認めていない現状では調査ができない。
 米軍は「予備調査の結果、数値上昇につながる原因は基地内で特定できなかった」と主張する。しかし米軍は調査地点や内容、PFASの数値など詳細を明らかにしていない。不誠実な態度を続ける米軍の言い分を認めるのは、無責任と言わざるを得ない。
 本当に基地と関係ないのなら米軍は堂々と調査を受け入れればいいはずである。日本政府は立ち入りが認められるよう日米地位協定の抜本改定に取り組むべきだ。
 ハンセン内の水道水は全て県企業局水である。基地由来とみられる汚染水が周辺住民に供給される一方で基地内には安全な水が供給されている現状はあまりにも理不尽だ。
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