This umpteenth surprises raises new questions about the spread of contaminated groundwater. According to samples taken on July 8, groundwater at a point about 25 meters from the sea contained 9000 becquerels of cesium-134 per liter and 18,000 becquerels of cesium-137, against respectively 99 Bq / l and 210 Bq / the three days before. The multiplication factor in this short time is 91 times in the first case and 86 in the second. "We are not yet able to say whether the contaminated water flows into the sea or not," said Tepco to the press. However, the group promises to strengthen controls and to take measures to prevent further contamination of the Pacific Ocean nearby.