Readings of Environmental Radiation Monitoring of Public Water Areas (Preliminary Report)

August 4, 2011 Local Nuclear Emergency Response Headquarters (Radioactivity Team) Disaster Provision Main Office of Fukushima Pref. (Nuclear Power Team)

1 Date: Thursday, July 7 – Friday, July 27, 2011

2 Number of monitoring locations: Rivers: 6 locations (water quality) Lakes and dam reservoirs: 5 locations (water quality) Lakes and dam reservoirs: 2 locations (bottom sediment) Agricultural reservoirs: 4 locations (water quality) Groundwater: 10 locations (water quality)

3 Monitoring Results (1) Rivers (water quality) Radioactive iodine: Not detectable in any locations Radioactive cesium: Cs-134 Not detectable – 1.18 Bq/L Cs-137 Not detectable – 1.30 Bq/L

(2) Lakes and dam reservoirs (water quality and bottom sediment) a. Water quality Radioactive iodine: Not detectable in any location Radioactive cesium: Not detectable in any location b. Bottom sediment Radioactive iodine: Not detectable in any location Radioactive cesium: Cs-134 Not detectable – 334 Bq/kg Cs-137 Not detectable – 371 Bq/kg

(3) Agricultural reservoirs (water quality) Radioactive iodine: Not detectable in any locations Radioactive cesium: Not detectable in any location

(4) Groundwater (water quality) Radioactive iodine: Not detectable in any locations Radioactive cesium: Not detectable in any location

*Water quality monitoring has been conducted once a month for rivers since May and once a month for lakes, dam reservoirs, and agricultural reservoirs since June. The quality of groundwater is monitored once a year. (Inquiries: Monitoring Team, Radioactivity Team Tel: 024-521-1917) Readings of Environmental Radiation Monitoring at Rivers, Lakes, Dam Reservoirs, and Agricultural Reservoirs（Preliminary Report）(Second report in July) August 4, 2011 Local Nuclear Emergency Response Headquarters (Radioactivity Team) Disaster Provision Main Office of Fukushima Pref. (Nuclear Power Team) Water & Air Environment Division, Social Affairs & Environment Department, Fukushima Prefectural Government ○River water quality (Surveyed once a month: survey started in May) Analysis results (Bq/L) № Region Name of river Sampling Points Radioactive iodine Radioactive cesium I-131 Cs-134 Cs-137 June 5 July 13 June 5 July 13 June 5 July 13 1 Abukuma river Taisho Bridge －－－1.40 － 1.04 Before the confluence of June 5 July 13 June 5 July 13 June 5 July 13 2 the Abukuma River －－－－－－ Hirose river June 6 July 4 June 6 July 4 June 6 July 4 3 Tatenokoshi Bridge －－－－－－ Before the confluence of June 5 July 13 June 5 July 13 June 5 July 13 4 Surikami river the Abukuma River －－－0.97 － 1.16 Ken-poku Before the confluence of June 5 July 13 June 5 July 13 June 5 July 13 5 Arakawa river the Abukuma River －－－－－－ June 17 July 8 June 17 July 8 June 17 July 8 6 Utsushi river Ozegawa Bridge －－－－－0.86 Utsushi river June 17 July 8 June 17 July 8 June 17 July 8 7 Kuchibutogawa Bridge (Tributary:Kuchibuto river －－－－0.78 － Before the confluence of June 5 July 13 June 5 July 13 June 5 July 13 8 Gobyaku River the Abukuma River －－－－－0.90 June 5 July 13 June 5 July 13 June 5 July 13 9 Abukuma river Akutsu Bridge －－－2.00 － 0.95 Before the confluence of June 17 July 27 June 17 July 27 June 17 July 27 10 Osekawa River the Abukuma River －－8.25 － 9.80 9.80 Before the confluence of June 16 July 27 June 16 July 27 June 16 July 27 11 Otakine river the Abukuma River －－－－－－ Ken-chu Before the confluence of June 5 July 13 June 5 July 13 June 5 July 13 12 Shakado river the Abukuma River －－－－－－ June 21 July 8 June 21 July 8 June 21 July 8 13 Yashiro river Oji Bridge －－－－－－ June 6 July 4 June 6 July 4 June 6 July 4 14 Natsui river Kitanouchi Bridge －－－－－－ June 10 July 8 June 10 July 8 June 10 July 8 15 Ken-nan Kuji river Takachihara Bridge －－－－－－ June 13 July 6 June 13 July 6 June 13 July 6 16 Miyako Bridge －－－－－－ Agano river June 17 July 15 June 17 July 15 June 17 July 15 17 Aizu Shingo Dam －－－－－－ June 15 July 22 June 15 July 22 June 15 July 22 18 Tadami river Fuji Bridge －－－－－－ June 16 July 11 June 16 July 11 June 16 July 11 19 Minamiaizu Agano river Tajima Bridge －－－－－－

1 / 7 Analysis results (Bq/L) № Region Name of river Sampling Points Radioactive iodine Radioactive cesium I-131Cs-134 Cs-137 June 14 July 19 June 14 July 19 June 14 July 19 20 Koizumi river hyakken Bridge －－－1.18 1.50 1.30 June 14 July 7 June 14 July 7 June 14 July 7 21 Uda river hyakken Bridge －－－－－－ June 13 July 7 June 13 July 7 June 13 July 7 22 Mano river Majima Bridge －－－－1.31 － June 17 July 8 June 17 July 8 June 17 July 8 23 Kusano －－1.64 2.77 2.88 4.77 June 17 July 8 June 17 July 8 June 17 July 8 24 Sousou Komiya －－2.03 3.07 1.95 3.26 Niida river June 20 July 19 June 20 July 19 June 20 July 19 25 Kidouchi Bridge －－1.46 － 1.30 － June 13 July 19 June 13 July 19 June 13 July 19 26 Sakekawa Bridge －－1.59 － 2.44 － June 8 July 14 June 8 July 14 June 8 July 14 27 Asami river Bouda Bridge －－－－0.95 － June 17 July 8 June 17 July 8 June 17 July 8 28 Jizou river Hamahata Bridge －－1.29 － 1.78 1.06 June 8 July 13 June 8 July 13 June 8 July 13 29 Ohisa river Kageiso Bridge －－－－－－ June 8 July 13 June 8 July 13 June 8 July 13 30 Niida river Matsuba Bridge －－－－0.83 － June 8 July 13 June 8 July 13 June 8 July 13 31 Natsui river Rokujumai Bridge －－－－－－ Iwaki June 8 July 13 June 8 July 13 June 8 July 13 32 Fujiwara river Minato Ohashi Bridge －－1.32 0.99 2.72 － June 8 July 13 June 8 July 13 June 8 July 13 33 Same river Samegawa Bridge －－－－－－ June 8 July 13 June 8 July 13 June 8 July 13 34 Binda river Binda Bridge －－－－－－ ※ "-" indicates that the detected radioactivity concentration was lower than the detection limits. (The detection limits in the surveys are 1 Bq/L) ※ Published in the second report in July

2 / 7 ○Water quality of lakes and dam reservoirs (Surveyed once a month: Survey started in June) Analysis results (Bq/L) Name of lakes and № Region Sampling Points Radioactive iodine Radioactive cesium dam reservoirs I-131 Cs-134 Cs-137 Surikamigawa Dam June 1 July 6 June 1 July 6 June 1 July 6 1 Ken-poku Dam site Reservoir －－－－－－ June 22 July 14 June 22 July 14 June 22 July 14 2 Lake Hatori Center of lake －－－－－－ Sengozawa Dam July 26 July 26 July 26 3 Dam site Reservoir －－－ Ken-chu Miharu Dam June 15 July 20 June 15 July 20 June 15 July 20 4 Dam site Reservoir －－－－－－ June 7 July 7 June 7 July 7 June 7 July 7 5 Komachi Dam Inside reservoir －－－－－－ June 8 July 7 June 8 July 7 June 8 July 7 6 Ken-nan Hokkawa Dam Dam site －－－－－－ Okawa Dam June 13 July 6 June 13 July 6 June 13 July 6 7 Center of lake Reservoir －－－－－－ July 15 July 15 July 15 8 Numazawa Lake Center of lake －－－ June 8 July 12 June 8 July 12 June 8 July 12 9 Inawashiro Lake Center of lake －－－－－－ June 9 July 6 June 9 July 6 June 9 July 6 10 Lake Hibara Center of lake －－－－－－ June 9 July 6 June 9 July 6 June 9 July 6 11 Lake Onogawa Center of lake －－－－－－ June 9 July 13 June 9 July 13 June 9 July 13 12 Aizu Lake Akimoto Center of lake －－－－－－ June 9 July 13 June 9 July 13 June 9 July 13 13 Lake Sohara Center of lake －－－－－－ July 15 July 15 July 15 14 Oguni Pond Center of lake －－－ Bandai Center of Bishamon- June 9 July 13 June 9 July 13 June 9 July 13 15 Goshikinuma Lakes numa Pond －－－－－－ Higashiyama Dam June 9 July 19 June 9 July 19 June 9 July 19 16 Dam site Reservoir －－－－－－ June 9 July 14 June 9 July 14 June 9 July 14 17 Nicchu Dam Inside reservoir －－－－－－ June 7 July 5 June 7 July 5 June 7 July 5 18 Ozenuma Pond Center of lake －－－－－－ Okutadami July 22 July 22 July 22 19 Center of lake Reservoir －－－ Minamiaizu June 15 July 11 June 15 July 11 June 15 July 11 20 Tagokura Reservoir Center of lake －－－－－－ June 8 July 25 June 8 July 25 June 8 July 25 21 Tajima Dam Dam site －－－－－－ July 14 July 14 July 14 22 Sousou Mano Dam Inside reservoir －－－ June 13 July 11 June 13 July 11 June 13 July 11 23 Shitoki Dam Dam site －－－－－－ June 13 July 11 June 13 July 11 June 13 July 11 24 Iwaki Takashiba Dam Inside reservoir －－－－－－ June 6 July 4 June 6 July 4 June 6 July 4 25 Kodama Dam Inside reservoir －－－－－－ ※ "-" indicates that the detected radioactivity concentration was lower than the detection limits. (The detection limits are app roximately 1Bq/L.) ※ Published in the second report in July

3 / 7 ○Water quality of agricultural reservoirs (Surveyed once a month: survey started in June) Analysis results (Bq/L) № Region Name City Radioactive iodine Radioactive cesium I-131Cs-134 Cs-137 June 15 July 11 June 15 July 11 June 15 July 11 1Handanuma Koori Town －－－1.07 －－ Ken-poku June 14 July 12 June 14 July 12 June 14 July 12 2 Oike Motomiya City －－－1.96 － 2.00 June 15 July 26 June 15 July 26 June 15 July 26 3 Kohei Sukagawa City －－－－－－ Ken-chu June 15 July 26 June 15 July 26 June 15 July 26 4 Takaranokusa Koriyama City －－－－－－ July 13 July 13 July 13 5 Watariike Yabuki Town －－－ Ken-nan June 13 July 13 June 13 July 13 June 13 July 13 6 Izumikawa Sirakawa City －－－－－－ June 14 July 7 June 14 July 7 June 14 July 7 7 Onuma Nishi Aizu Town －－－－－－ Aizu June 14 July 7 June 14 July 7 June 14 July 7 8 Terairi Aizumisato Town －－－－－－ June 10 July 4 June 10 July 4 June 10 July 4 9 Minamiaizu Fukui Tadami Town －－－－－－ June 15 July 12 June 15 July 12 June 15 July 12 10 Takei Shinchi Town －－－－1.55 － Sousou June 15 July 12 June 15 July 12 June 15 July 12 11 Uchizawa Soma City －－－－0.97 － June 9 July 5 June 9 July 5 June 9 July 5 12 Kanoritsutsumishita Iwaki City Taira －－－－－－ Iwaki June 9 July 5 June 9 July 5 June 9 July 5 13 Shinike Iwaki City －－－－－－ ※ "-" indicates that the detected radioactivity concentration was lower than the detection limits. (The detection limits are approximately 1Bq/L.) ※ Published in the second report in July

4 / 7 ○River sediment (Surveyed once in six months: survey started in May) Analysis results (Bq/kg) № Region Name of river Sampling Points Radioactive iodine Radioactive cesium I-131 Cs-134 Cs-137 May 24* May 24* May 24* 1 Abukuma river Taisho Bridge － 11,000 12,000 Before the confluence of May 24* May 24* May 24* 2 the Abukuma River － 4,300 4,700 Hirose river May 26* May 26* May 26* 3 Tatenokoshi Bridge － 4,800 5,100 Before the confluence of May 24* May 24* May 24* 4 Surikami river the Abukuma River － 1,000 1,100 Ken-poku Before the confluence of May 24* May 24* May 24* 5 Arakawa river the Abukuma River － 4,200 4,600 May 26* May 26* May 26* 6 Utsushi river Ozegawa Bridge － 1,100 1,300 Utsushi river May 26* May 26* May 26* 7 Kuchibutogawa Bridge (Tributary:Kuchibuto river － 3,400 3,700 Before the confluence of May 26* May 26* May 26* 8 Gobyakugawa River the Abukuma River － 1,800 2,100 May 24* May 24* May 24* 9 Abukuma river Akutsu Bridge － 260 290 Before the confluence of May 26* May 26* May 26* 10 Osekawa River the Abukuma River － 850 950 Before the confluence of May 26* May 26* May 26* 11 Otakinekawa river the Abukuma River － 120 140 Ken-chu Before the confluence of May 24* May 24* May 24* 12 Shakadokawa river the Abukuma River － 1,100 1,200 May 26* May 26* May 26* 13 Yashiro river Oji Bridge － 120 130 May 26* May 26* May 26* 14 Natsui river Kitanouchi Bridge － 95 94 May 27 May 27 May 27 15 Ken-nan Kuji river Takachihara Bridge － 130 140 May 27 May 27 May 27 16 Miyako Bridge － 29 33 Agano river May 27 May 27 May 27 17Aizu Shingo Dam － 53 61 May 27 May 27 May 27 18 Tadami river Fuji Bridge － 320 360 May 27 May 27 May 27 19 Minamiaizu Agano river Tajima Bridge － 29 34

5 / 7 Analysis results (Bq/kg) № Region Name of river Sampling Points Radioactive iodine Radioactive cesium I-131 Cs-134 Cs-137 May 29* May 29* May 29* 20 Koizumi river hyakken Bridge － 660 700 May 29* May 29* May 29* 21 Uda river hyakken Bridge － 48 51 May 29* May 29* May 29* 22 Mano river Majima Bridge － 6,900 7,800 May 28* May 28* May 28* 23 Kusano 42 7,200 7,900 May 28* May 28* May 28* 24Sousou Komiya － 2,300 2,500 Niida river May 29* May 29* May 29* 25 Kidouchi Bridge － 14,000 16,000 May 29* May 29* May 29* 26 Sakekawa Bridge － 1,900 2,100 May 28* May 28* May 28* 27 Asami river Bouda Bridge － 860 950 May 29* May 29* May 29* 28 Jizou river Hamahata Bridge － 2,000 2,300 May 28* May 28* May 28* 29 Ohisa river Kageiso Bridge － 2,200 2,300 May 28* May 28* May 28* 30 Niida river Matsuba Bridge － 980 1,000 May 28* May 28* May 28* 31 Natsui river Rokujumai Bridge － 190 220 Iwaki May 28* May 28* May 28* 32 Fujiwara river Minato Ohashi Bridge － 660 730 May 28* May 28* May 28* 33 Same river Samegawa Bridge － 700 770 May 28* May 28* May 28* 34 Binda river Binda Bridge － 97 110 ※ "-" indicates that the detected radioactivity concentration was lower than the detection limits. (The detection limits in the surveys by the Ministry of the Environment are 30 Bq/kg, and in the rest are approximately 15Bq/kg) The surveys marked with * on the date were conducted by the Ministry of the Environment. Other surveys were conducted ※ by Fukushima Prefecture. ※ Published in the second report in July

6 / 7 ○Water quality of lakes and dam reservoirs (Surveyed once a month: Survey started in June) Analysis results (Bq/kg) № Region Name of lakes and dam reservoirs Sampling Points Radioactive iodine Radioactive cesium I-131 Cs-134 Cs-137 Surikamigawa Dam June 1 June 1 June 1 1 Ken-poku Dam site Reservoir － 127 132 June 22 June 22 June 22 2 Lake Hatori Center of lake － 440 441 Sengozawa Dam July 26 July 26 July 26 3 Dam site Reservoir － 334 371 Ken-chu Miharu Dam June 15 June 15 June 15 4 Dam site Reservoir － 107 107 June 7 June 7 June 7 5 Komachi Dam Inside reservoir － 1,160 1,350 June 8 June 8 June 8 6 Ken-nan Hokkawa Dam Dam site － 3,140 3,400 Okawa Dam June 13 June 13 June 13 7 Center of lake Reservoir －－12.1 July 15 July 15 July 15 8 Numazawa Lake Center of lake －－－ June 8 June 8 June 8 9 Inawashiro Lake Center of lake －－－ June 9 June 9 June 9 10 Lake Hibara Center of lake － 85.6 113 June 9 June 9 June 9 11 Lake Onogawa Center of lake －－18.1 June 9 June 9 June 9 12Aizu Lake Akimoto Center of lake －－12.5 June 9 June 9 June 9 13 Lake Sohara Center of lake －－24.9 July 15 July 15 July 15 14 Oguni Pond Center of lake － 55.7 70.8 Bandai Center of Bishamon- June 9 June 9 June 9 15 Goshikinuma Lakes numa Pond － 147 180 Higashiyama Dam June 9 June 9 June 9 16 Dam site Reservoir － 70.8 78.1 June 9 June 9 June 9 17 Nicchu Dam Inside reservoir －－－ June 7 June 7 June 7 18 Ozenuma Pond Center of lake －－－ Okutadami July 22 July 22 July 22 19 Center of lake Reservoir － 38.9 69.1 Minamiaizu June 15 June 15 June 15 20 Tagokura Reservoir Center of lake － 103 112 June 8 June 8 6/8 21 Tajima Dam Dam site － 35.9 34.4

22Sousou Mano Dam Inside reservoir

June 13 June 13 June 13 23 Shitoki Dam Dam site － 261 302 June 13 June 13 June 13 24 Iwaki Takashiba Dam Inside reservoir － 58.3 56.9 June 6 June 6 June 6 25 Kodama Dam Inside reservoir －－－ ※ "-" indicates that the detected radioactivity concentration was lower than the detection limits. (The detection limits are approximately 15Bq/kg) ※ Published in the second report in July

7 / 7 Map of Locations of Monitoring at Public Waters

River (1~34) Lake and dam reservoir (1~25) Agricultural reservoir (1~13)

Readings of Environmental Radiation Monitoring of Groundwater (Preliminary Report)

August 4, 2011 Local Nuclear Emergency Response Headquarters (Radioactivity Team) Disaster Provision Main Office of Fukushima Pref. (Nuclear Power Team) Water & Air Environment Division, Social Affairs & Environment Department, Fukushima Prefectural Government

○Monitoring period: July 16, 2011 - July 29, 2011

Address of Analysis results (Bq/L) № Region Sampling Sampling Point Sampling date Radioactive iodine Radioactive cesium Point I-131 Cs-134 Cs-137 1 Tamano July 19* －－－ Soma City 2 Higashi Tamano July 19* －－－

3 Kashima ward Kamitochikubo July 19* －－－ 4 Kashima ward Jisabara July 19* －－－ 5 Haramachi ward Fukouno July 19* －－－ Sousou 6 Minami Soma Haramachi ward Shidazawa July 19* －－－ 7 City Haramachi ward Ishigami July 19* －－－ 8 Haramachi ward Ohkido July 20* －－－ 9 Haramachi ward Ohkido July 20* －－－

10 Haramachi ward Kamiohta July 20* －－－ ※ "-" indicates that the detected radioactivity concentration was lower than the detection limits. (The detection limits in the surveys by the Ministry of the Environment are 10 Bq/L, and in the rest are approximately 1Bq/L.) ※ The surveys marked with * on the date were conducted by the Ministry of the Environment. Other surveys were conducted by Fukushima Prefecture. ※ Monitored this time

【Referance】

Monitored June 21 Monitored July 7 Monitored July 14 Monitored July 21 Monitored this time (10 locations) (45 locations) (55 locations) (2 locations) (10 locations) Radioactive Not detected in any Not detected in any Not detected in any Not detected in any Not detected in any I-131 iodine locations locations locations locations locations Not detected in any Not detected in any Not detected in any Not detected in any Not detected in any Cs-134 Radioactive locations locations locations locations locations cesium Not detected in any Not detected in any Not detected in any Not detected in any Not detected in any Cs-137 locations locations locations locations locations Total (122 locations) Radioactive Not detected in any I-131 iodine locations Not detected in any Cs-134 Radioactive locations cesium Not detected in any Cs-137 locations

1/1 Sampling Point Soma City Tamano Map of groundwater-monitoring locations Soma City Higashitamano Minamisoma City Kashima ward Kamitochikubo Minamisoma City Kashima ward Jisabara

Minamisoma City Haramachi ward Fukano Minamisoma City Haramachi ward Shidazawa Minamisoma City Haramachi ward Ishigami

Minamisoma City Haramachi ward Ohkido

Minamisoma City Haramachi ward Ohkido Minamisoma City Haramachi ward Kamiohta

Monitored locations in Emergency Environmental Monitoring of Groundwater Planned evacuation zones Emergency evacuation preparation zones