Fukushima Daiichi NPS Prompt Report 2013

This is follow-up information on the latest situation concerning the detection of high densities of tritium and strontium in the observation hole located on the east of the Units 1-4 Turbine Buildings.

We would like to announce measurement result of tritium on water in the groundwater observation hole No.2-6 located on the east of the Units 1-4 Turbine Buildings, sampled for the first time on September 20.

<Measurement results on the groundwater observation hole No.2-6: Sampled on September 20>
· Tritium 200Bq/L
· Cesium-134: Below the detection limit value (the detection limit value: 0.39Bq/L) (previously announced)
· Cesium-137: Below the detection limit value (the detection limit value: 0.45Bq/L) (previously announced)
· All-β: Below the detection limit value (the detection limit value: 18Bq/L) (previously announced)

We will continue sampling, analyzing, and monitoring the situation.

For the past sampling results, please refer to the following page on our website:
http://www.tepco.co.jp/en/nu/fukushima-np/f1/smp/index-e.html