And now...reservoir no.1

April 9, 2013

Press Release (Apr 09,2013)Water Leak from the Underground Reservoirs in Fukushima Daiichi Nuclear Power Station (Follow-up Information No.22)

http://www.tepco.co.jp/en/press/corp-com/release/2013/1226232_5130.html

This is follow-up information regarding the water leak from the underground reservoirs at Fukushima Daiichi NPS.

The chloride concentration analysis results of the samples collected in the leakage detection hole (at 2 locations) of the underground reservoir No.1 this afternoon (April 9) are as follows.

- Water in the leakage detection hole of the underground reservoir No.1 (in the northeast side)
Sampling performed at 1:40 PM on April 9
Chloride concentration: 1100ppm
(Reference) Result of sampling performed at 8:35 AM on April 9
Chloride concentration: 910ppm

- Water in the leakage detection hole of the underground reservoir No.1 (in the southwest side)
Sampling performed at 1:20 PM on April 9
Chloride concentration: 9ppm
(Reference) Result of sampling performed at 8:30 AM on April 9
Chloride concentration: 8ppm

The water level, etc. of the underground reservoir of concern will continue to be monitored intensively.