Independent Environmental Monitoring Program: Pickering Nuclear Power Generating Site

Publication date: February 20, 2018

Ontario Power Generation (OPG) is licensed by the Canadian Nuclear Safety Commission (CNSC) to operate the Pickering Nuclear Power Generating Site. The site is located in Pickering, ON and includes the Pickering Waste Management Facility and eight CANDU power reactors. Two of the existing power reactors (units 2 and 3) are not operating and are maintained in safe storage. Units 1 and 4 have a gross electrical output of 542 MWe (megawatts electrical) each, and units 5 to 8 have an output of 540 MWe each.

The Independent Environmental Monitoring Program (IEMP) results for 2017, 2015 and 2014 confirm that the public and the environment around the Pickering site are protected and that there are no expected health impacts.

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[ ] Guideline/Reference Level

Pickering Nuclear Generating Station

Sample Type Sample Description Parameter 2017 Result 2015 Result 2014 Result Guideline/
Reference Level
Expected Health Impact (Yes/No) Background Sample Code
Food Stuffs Milk - from tank Organically Bound Tritium <1.5 Bq/kg fresh weight <1.5 Bq/kg fresh weight 2.5 Bq/kg fresh weight 2,260 Bq/kg fresh weight No N/A PP13-F01
Food Stuffs Milk - from tank Cesium-137 <0.25 Bq/kg fresh weight N/A 25 Bq/kg fresh weight No N/A PP13-F01
Food Stuffs Milk - from tank Tritiated water 11.1 Bq/kg fresh weight 6.7 Bq/kg fresh weight 6.8 Bq/kg fresh weight 5,560 Bq/kg fresh weight No N/A PP13-F01
Food Stuffs Milk - from tank Cobalt-60 <0.32 Bq/kg fresh weight N/A 11 Bq/kg fresh weight No N/A PP13-F01
Food Stuffs Rhubarb Organically Bound Tritium <1.5 Bq/kg fresh weight 45200 Bq/kg fresh weight No N/A PP14-F02
Food Stuffs Rhubarb Tritiated water 15.4 Bq/kg fresh weight 104000 Bq/kg fresh weight No N/A PP14-F02
Food Stuffs peas Organically Bound Tritium <1.5 Bq/kg fresh weight 45200 Bq/kg fresh weight No N/A PP14-F03
Food Stuffs peas Tritiated water 7.8 Bq/kg fresh weight 104000 Bq/kg fresh weight No N/A PP14-F03
Food Stuffs berries Organically Bound Tritium <1.5 Bq/kg fresh weight 50300 Bq/kg fresh weight No N/A PP14-F04
Food Stuffs berries Tritiated water 12.8 Bq/kg fresh weight 123000 Bq/kg fresh weight No N/A PP14-F04
Food Stuffs potatoes Organically Bound Tritium <1.5 Bq/kg fresh weight 121000 Bq/kg fresh weight No N/A PP14-F05
Food Stuffs potatoes Tritiated water 7.4 Bq/kg fresh weight 279000 Bq/kg fresh weight No N/A PP14-F05
Soil Soil, 0-5 cm Cesium-137 2.93 Bq/kg dry weight 3.84 Bq/kg dry weight 3.42 Bq/kg dry weight 58.6 Bq/kg dry weight No N/A PP03-S02
Soil Soil, 0-5 cm Cobalt-60 <1.03 Bq/kg dry weight <1.09 Bq/kg dry weight <0.94 Bq/kg dry weight 14 Bq/kg dry weight No N/A PP03-S02
Vegetation grass/vegetation Organically Bound Tritium 1.7 Bq/kg fresh weight N/A <1.5 Bq/kg fresh weight 73,000 Bq/kg fresh weight No N/A PP03-V02
Vegetation grass/vegetation Cesium-137 <3.0 Bq/kg fresh weight <2.7 Bq/kg fresh weight N/A 52 Bq/kg fresh weight No N/A PP03-V02
Vegetation grass/vegetation Tritiated water 17.2 Bq/kg fresh weight N/A 30.9 Bq/kg fresh weight 10,900 Bq/kg fresh weight No N/A PP03-V02
Vegetation grass/vegetation Cobalt-60 <3.3 Bq/kg fresh weight <3.3 Bq/kg fresh weight N/A 605 Bq/kg fresh weight No N/A PP03-V02
Soil Soil, 0-5 cm Cesium-137 2.57 Bq/kg dry weight 2.62 Bq/kg dry weight 4.73 Bq/kg dry weight 58.6 Bq/kg dry weight No N/A PP01-S01
Soil Soil, 0-5 cm Cobalt-60 <1.03 Bq/kg dry weight <1.09 Bq/kg dry weight <0.94 Bq/kg dry weight 14 Bq/kg dry weight No N/A PP01-S01
Vegetation grass/vegetation Organically Bound Tritium 12.2 Bq/kg fresh weight N/A 8.7 Bq/kg fresh weight 73,000 Bq/kg fresh weight No N/A PP01-V01
Vegetation grass/vegetation Cesium-137 <3.0 Bq/kg fresh weight <2.7 Bq/kg fresh weight N/A 52 Bq/kg fresh weight No N/A PP01-V01
Vegetation grass/vegetation Tritiated water 178.7 Bq/kg fresh weight N/A 61.8 Bq/kg fresh weight 10,900 Bq/kg fresh weight No N/A PP01-V01
Vegetation grass/vegetation Cobalt-60 <3.3 Bq/kg fresh weight <3.3 Bq/kg fresh weight N/A 605 Bq/kg fresh weight No N/A PP01-V01
Water Lake water (Surface) pH 8.1 6.5 - 9.0 No N/A PP02-W01
Water Lake water (Surface) Gross Alpha <0.10 Bq/L <0.04 Bq/L N/A 0.5 Bq/L No N/A PP02-W01
Water Lake water (Surface) Gross Beta 0.15Bq/L <0.08 Bq/L 0.15 Bq/L 1 Bq/L No N/A PP02-W01
Water Lake water (Surface) Cesium-137 <0.25 Bq/L <0.24 Bq/L <0.24 Bq/L 10 Bq/L No N/A PP02-W01
Water Lake water (Surface) Copper 1.23µg/L 2 - 4 µg/L No N/A PP02-W01
Water Lake water (Surface) Zinc 0.84 µg/L 30 µg/L No N/A PP02-W01
Water Lake water (Surface) Tritiated water 14.8 Bq/L 24.3 Bq/L 19 Bq/L 7,000 Bq/L No N/A PP02-W01
Water Lake water (Surface) Aluminum 5.29µg/L 100 µg/L No N/A PP02-W01
Water Lake water (Surface) Iron 3.74µg/L 300 µg/L No N/A PP02-W01
Water Lake water (Surface) Cadmium <0.08µg/L 0.09 µg/L No N/A PP02-W01
Water Lake water (Surface) Cobalt-60 <0.28 Bq/L <0.28 Bq/L <0.28 Bq/L 12.1 Bq/L No N/A PP02-W01
Water Lake water (Surface) Total Dissolved Solids 179 mg/L 500 mg/L No N/A PP02-W01
Water Lake water (Surface) Ammonia <0.1mg/L 0.3 mg/L No N/A PP02-W01
Water Lake water (Surface) Hydrazine <0.1 µg/L 2.6 µg/L No N/A PP02-W01
Water Lake water (Surface) Morpholine <0.1 mg/L 0.004 mg/L No N/A PP02-W01
Air Elemental Tritium <1.9 Bq/m3 <2 Bq/m3 <2 Bq/m3 5,100,000 Bq/m3 No N/A PP04-A01
Air Cesium-137 <0.000051 Bq/m3 <0.000065 Bq/m3 <0.0005 Bq/m3 2.56 Bq/m3 No N/A PP04-A01
Air Tritiated water <1.9 Bq/m3 <2 Bq/m3 <2 Bq/m3 340 Bq/m3 No N/A PP04-A01
Air Cobalt-60 <0.000065 Bq/m3 <0.000072 Bq/m3 N/A N/A No N/A PP04-A01
Air Iodine-131 <0.00063 Bq/m3 <0.000047 Bq/m3 N/A 0.228 Bq/m3 No N/A PP04-A01
Soil Soil, 0-5 cm Cesium-137 2.22 Bq/kg dry weight 1.26 Bq/kg dry weight 2.66 Bq/kg dry weight 58.6 Bq/kg dry weight No N/A PP04-S03
Soil Soil, 0-5 cm Cobalt-60 <1.03 Bq/kg dry weight <1.09 Bq/kg dry weight <0.94 Bq/kg dry weight 14 Bq/kg dry weight No N/A PP04-S03
Vegetation grass/vegetation Organically Bound Tritium 6.1 Bq/kg fresh weight N/A 6.6 Bq/kg fresh weight 73,000 Bq/kg fresh weight No N/A PP04-V03
Vegetation grass/vegetation Cesium-137 <3.0 Bq/kg fresh weight <2.7 Bq/kg fresh weight N/A 52 Bq/kg fresh weight No N/A PP04-V03
Vegetation grass/vegetation Tritiated water 50.6 Bq/kg fresh weight N/A 17.6 Bq/kg fresh weight 10,900 Bq/kg fresh weight No N/A PP04-V03
Vegetation grass/vegetation Cobalt-60 <3.3 Bq/kg fresh weight <3.3 Bq/kg fresh weight N/A 605 Bq/kg fresh weight No N/A PP04-V03
Sand Sand, 0-5 cm Cesium-137 <0.55 Bq/kg dry weight 0.39 Bq/kg dry weight <0.81 Bq/kg dry weight 58.6 Bq/kg dry weight No N/A PP05-SA01
Sand Sand, 0-5 cm Cobalt-60 <0.54 Bq/kg dry weight <0.59 Bq/kg dry weight <0.94 Bq/kg dry weight 14 Bq/kg dry weight No N/A PP05-SA01
Water Lake water (Surface) pH 8.1 6.5 - 9.0 No N/A PP05-W02
Water Lake water (Surface) Gross Alpha 0.17 Bq/L <0.04 Bq/L N/A 0.5 Bq/L No N/A PP05-W02
Water Lake water (Surface) Gross Beta 0.23Bq/L <0.08 Bq/L <0.12 Bq/L 1 Bq/L No N/A PP05-W02
Water Lake water (Surface) Cesium-137 <0.25 Bq/L <0.24 Bq/L <0.24 Bq/L 10 Bq/L No N/A PP05-W02
Water Lake water (Surface) Copper 2.38µg/L 2 - 4 µg/L No N/A PP05-W02
Water Lake water (Surface) Zinc 1.50 µg/L 30 µg/L No N/A PP05-W02
Water Lake water (Surface) Tritiated water 30.4 Bq/L 21.7 Bq/L 17 Bq/L 7,000 Bq/L No N/A PP05-W02
Water Lake water (Surface) Aluminum 3.15µg/L 100 µg/L No N/A PP05-W02
Water Lake water (Surface) Iron 7.10 µg/L 300 µg/L No N/A PP05-W02
Water Lake water (Surface) Cadmium <0.08µg/L 0.09 µg/L No N/A PP05-W02
Water Lake water (Surface) Cobalt-60 <0.28 Bq/L <0.28 Bq/L <0.28 Bq/L 12.1 Bq/L No N/A PP05-W02
Water Lake water (Surface) Total Dissolved Solids 203 mg/L 500 mg/L No N/A PP05-W02
Water Lake water (Surface) Ammonia <0.1mg/L 0.3 mg/L No N/A PP05-W02
Water Lake water (Surface) Hydrazine <0.1 µg/L 2.6 µg/L No N/A PP05-W02
Water Lake water (Surface) Morpholine <0.1 mg/L 0.004 mg/L No N/A PP05-W02
Vegetation grass/vegetation Organically Bound Tritium 15.8 Bq/kg fresh weight N/A 17.6 Bq/kg fresh weight 73,000 Bq/kg fresh weight No N/A PP06-V04
Vegetation grass/vegetation Cesium-137 <3.0 Bq/kg fresh weight <2.7 Bq/kg fresh weight N/A 52 Bq/kg fresh weight No N/A PP06-V04
Vegetation grass/vegetation Tritiated water 91.4 Bq/kg fresh weight N/A 118.7 Bq/kg fresh weight 10,900 Bq/kg fresh weight No N/A PP06-V04
Vegetation grass/vegetation Cobalt-60 <3.3 Bq/kg fresh weight <3.3 Bq/kg fresh weight N/A 605 Bq/kg fresh weight No N/A PP06-V04
Air Elemental Tritium <1.9 Bq/m3 <2 Bq/m3 <2 Bq/m3 5,100,000 Bq/m3 No N/A PP06-A02
Air Cesium-137 <0.000051 Bq/m3 <0.000065 Bq/m3 <0.0005 Bq/m3 2.56 Bq/m3 No N/A PP06-A02
Air Tritiated water <1.9 Bq/m3 <2 Bq/m3 <2 Bq/m3 340 Bq/m3 No N/A PP06-A02
Air Cobalt-60 <0.000065 Bq/m3 <0.000072 Bq/m3 N/A N/A No N/A PP06-A02
Air Iodine-131 <0.00063 Bq/m3 <0.000047 Bq/m3 N/A 0.228 Bq/m3 No N/A PP06-A02
Soil Soil, 0-5 cm Cesium-137 2.07 Bq/kg dry weight 3.05 Bq/kg dry weight 3.52 Bq/kg dry weight 58.6 Bq/kg dry weight No N/A PP06-S04
Soil Soil, 0-5 cm Cobalt-60 <1.03 Bq/kg dry weight <1.09 Bq/kg dry weight <0.94 Bq/kg dry weight 14 Bq/kg dry weight No N/A PP06-S04
Air Elemental Tritium <1.9 Bq/m3 <2 Bq/m3 <2 Bq/m3 5,100,000 Bq/m3 No N/A PP07-A03
Air Cesium-137 <0.000051 Bq/m3 <0.000065 Bq/m3 <0.0005 Bq/m3 2.56 Bq/m3 No N/A PP07-A03
Air Tritiated water 4.9 Bq/m3 <2 Bq/m3 <2 Bq/m3 340 Bq/m3 No N/A PP07-A03
Air Cobalt-60 <0.000065 Bq/m3 <0.000072 Bq/m3 N/A N/A No N/A PP07-A03
Air Iodine-131 <0.00063 Bq/m3 <0.000047 Bq/m3 N/A 0.228 Bq/m3 No N/A PP07-A03
Soil Soil, 0-5 cm Cesium-137 2.29 Bq/kg dry weight 5.93 Bq/kg dry weight 2.29 Bq/kg dry weight 58.6 Bq/kg dry weight No N/A PP07-S05
Soil Soil, 0-5 cm Cobalt-60 <1.03 Bq/kg dry weight <1.09 Bq/kg dry weight <0.94 Bq/kg dry weight 14 Bq/kg dry weight No N/A PP07-S05
Vegetation grass/vegetation Organically Bound Tritium 13.7 Bq/kg fresh weight N/A 8.9 Bq/kg fresh weight 73,000 Bq/kg fresh weight No N/A PP07-V05
Vegetation grass/vegetation Cesium-137 <3.0 Bq/kg fresh weight <2.7 Bq/kg fresh weight N/A 52 Bq/kg fresh weight No N/A PP07-V05
Vegetation grass/vegetation Tritiated water 520.4 Bq/kg fresh weight N/A 73.8 Bq/kg fresh weight 10,900 Bq/kg fresh weight No N/A PP07-V05
Vegetation grass/vegetation Cobalt-60 <3.3 Bq/kg fresh weight <3.3 Bq/kg fresh weight N/A 605 Bq/kg fresh weight No N/A PP07-V05
Sand Sand, 0-5 cm Cesium-137 <0.55 Bq/Kg dry weight 0.25 Bq/kg dry weight <0.81 Bq/kg dry weight 58.6 Bq/kg dry weight No N/A PP07-SA02
Sand Sand, 0-5 cm Cobalt-60 <0.54 Bq/Kg dry weight <0.59 Bq/kg dry weight <0.94 Bq/kg dry weight 14 Bq/kg dry weight No N/A PP07-SA02
Water Lake water (Surface) pH 7.9 6.5 - 9.0 No N/A PP07-W03
Water Lake water (Surface) Gross Alpha <0.10 Bq/L <0.04 Bq/L N/A 0.5 Bq/L No N/A PP07-W03
Water Lake water (Surface) Gross Beta 0.23Bq/L <0.08 Bq/L <0.12 Bq/L 1 Bq/L No N/A PP07-W03
Water Lake water (Surface) Cesium-137 <0.25 Bq/L <0.24 Bq/L <0.24 Bq/L 10 Bq/L No N/A PP07-W03
Water Lake water (Surface) Copper 0.99µg/L 2 - 4 µg/L No N/A PP07-W03
Water Lake water (Surface) Zinc 1.65 µg/L 30 µg/L No N/A PP07-W03
Water Lake water (Surface) Tritiated water 5.5 Bq/L 6.6 Bq/L 14 Bq/L 7,000 Bq/L No N/A PP07-W03
Water Lake water (Surface) Aluminum 2.21µg/L 100 µg/L No N/A PP07-W03
Water Lake water (Surface) Iron 1.75µg/L 300 µg/L No N/A PP07-W03
Water Lake water (Surface) Cadmium <0.08µg/L 0.09 µg/L No N/A PP07-W03
Water Lake water (Surface) Cobalt-60 <0.28 Bq/L <0.28 Bq/L <0.28 Bq/L 12.1 Bq/L No N/A PP07-W03
Water Lake water (Surface) Total Dissolved Solids 212 mg/L 500 mg/L No N/A PP07-W03
Water Lake water (Surface) Ammonia <0.1mg/L 0.3 mg/L No N/A PP07-W03
Water Lake water (Surface) Hydrazine <0.1 µg/L 2.6 µg/L No N/A PP07-W03
Water Lake water (Surface) Morpholine <0.1 mg/L 0.004 mg/L No N/A PP07-W03
Vegetation grass/vegetation Organically Bound Tritium 4.7 Bq/kg fresh weight N/A 5.7 Bq/kg fresh weight 73,000 Bq/kg fresh weight No N/A PP09-V07
Vegetation grass/vegetation Cesium-137 <3.0 Bq/kg fresh weight <2.7 Bq/kg fresh weight N/A 52 Bq/kg fresh weight No N/A PP09-V07
Vegetation grass/vegetation Tritiated water 54.9 Bq/kg fresh weight N/A 10.2 Bq/kg fresh weight 10,900 Bq/kg fresh weight No N/A PP09-V07
Vegetation grass/vegetation Cobalt-60 <3.3 Bq/kg fresh weight <3.3 Bq/kg fresh weight N/A 605 Bq/kg fresh weight No N/A PP09-V07
Soil Soil, 0-5 cm Cesium-137 2.10 Bq/kg dry weight 2.88 Bq/kg dry weight 2.32 Bq/kg dry weight 58.6 Bq/kg dry weight No N/A PP09-S07
Soil Soil, 0-5 cm Cobalt-60 <1.03 Bq/kg dry weight <1.09 Bq/kg dry weight <0.94 Bq/kg dry weight 14 Bq/kg dry weight No N/A PP09-S07
Water Lake water (Surface) pH 8.0 6.5 - 9.0 No N/A PP10-W04
Water Lake water (Surface) Gross Alpha <0.10 Bq/L <0.04 Bq/L N/A 0.5 Bq/L No N/A PP10-W04
Water Lake water (Surface) Gross Beta <0.10 Bq/L <0.08 Bq/L <0.12 Bq/L 1 Bq/L No N/A PP10-W04
Water Lake water (Surface) Cesium-137 <0.25 Bq/L <0.24 Bq/L <0.24 Bq/L 10 Bq/L No N/A PP10-W04
Water Lake water (Surface) Copper 1.91µg/L 2 - 4 µg/L No N/A PP10-W04
Water Lake water (Surface) Zinc 1.13 µg/L 30 µg/L No N/A PP10-W04
Water Lake water (Surface) Tritiated water 3.5 Bq/L 6.9 Bq/L 40 Bq/L 7,000 Bq/L No N/A PP10-W04
Water Lake water (Surface) Aluminum 4.53µg/L 100 µg/L No N/A PP10-W04
Water Lake water (Surface) Iron 3.15µg/L 300 µg/L No N/A PP10-W04
Water Lake water (Surface) Cadmium <0.08µg/L 0.09 µg/L No N/A PP10-W04
Water Lake water (Surface) Cobalt-60 <0.28 Bq/L <0.28 Bq/L <0.28 Bq/L 12.1 Bq/L No N/A PP10-W04
Water Lake water (Surface) Total Dissolved Solids 205 mg/L 500 mg/L No N/A PP10-W04
Water Lake water (Surface) Ammonia <0.1mg/L 0.3 mg/L No N/A PP10-W04
Water Lake water (Surface) Hydrazine <0.1 µg/L 2.6 µg/L No N/A PP10-W04
Water Lake water (Surface) Morpholine <0.1 mg/L 0.004 mg/L No N/A PP10-W04
Water Lake water (Surface) pH 8.0 6.5 - 9.0 No N/A PP11-W05
Water Lake water (Surface) Gross Alpha <0.10 Bq/L <0.04 Bq/L N/A 0.5 Bq/L No N/A PP11-W05
Water Lake water (Surface) Gross Beta 0.18Bq/L <0.08 Bq/L <0.12 Bq/L 1 Bq/L No N/A PP11-W05
Water Lake water (Surface) Cesium-137 <0.25 Bq/L <0.24 Bq/L <0.24 Bq/L 10 Bq/L No N/A PP11-W05
Water Lake water (Surface) Copper 1.14µg/L 2 - 4 µg/L No N/A PP11-W05
Water Lake water (Surface) Zinc 1.16 µg/L 30 µg/L No N/A PP11-W05
Water Lake water (Surface) Tritiated water 3.5 Bq/L 5.7 Bq/L 3.9 Bq/L 7,000 Bq/L No N/A PP11-W05
Water Lake water (Surface) Aluminum 89.97µg/L 100 µg/L No N/A PP11-W05
Water Lake water (Surface) Iron 2.62µg/L 300 µg/L No N/A PP11-W05
Water Lake water (Surface) Cadmium <0.08µg/L 0.09 µg/L No N/A PP11-W05
Water Lake water (Surface) Cobalt-60 <0.28 Bq/L <0.28 Bq/L <0.28 Bq/L 12.1 Bq/L No N/A PP11-W05
Water Lake water (Surface) Total Dissolved Solids 206 mg/L 500 mg/L No N/A PP11-W05
Water Lake water (Surface) Ammonia <0.1mg/L 0.3 mg/L No N/A PP11-W05
Water Lake water (Surface) Hydrazine <0.1 µg/L 2.6 µg/L No N/A PP11-W05
Water Lake water (Surface) Morpholine <0.1 mg/L 0.004 mg/L No N/A PP11-W05
Air Elemental Tritium N/A <2 Bq/m3 5,100,000 Bq/m3 No N/A PP12-A05
Air Cesium-137 N/A <0.0005 Bq/m3 2.56 Bq/m3 No N/A PP12-A05
Air Tritiated water N/A <2 Bq/m3 340 Bq/m3 No N/A PP12-A05
Air Cobalt-60 N/A N/A N/A No N/A PP12-A05
Air Iodine-131 N/A N/A 0.228 Bq/m3 No N/A PP12-A05
Soil Soil, 0-5 cm Cesium-137 N/A 2.11 Bq/kg dry weight 58.6 Bq/kg dry weight No N/A PP12-S08
Soil Soil, 0-5 cm Cobalt-60 N/A <0.94 Bq/kg dry weight 14 Bq/kg dry weight No N/A PP12-S08
Table Footnotes

1 The < symbol indicates that a result is below the provided laboratory analytical detection limit.

2 N/A – Not available

3 For radiological parameters where no guidelines exist, CNSC reference levels were established based on conservative assumptions using CSA Standard N288.1-14. The reference level for a particular radionuclide in a particular medium (e.g., water, air, food) represents the activity concentration that would result in a dose of 0.1 mSv/year, a dose at which no health impacts are expected.

4 Tritiated water (HTO) is a radioactive form of water where the usual hydrogen atoms in H2O are replaced with tritium. Elemental tritium (HT) refers to the radioactive form of hydrogen gas.

Background

CNSC staff taking vegetation samples near the Pickering nuclear site in 2017.

CNSC staff taking water samples at a public beach near the Pickering nuclear site in 2017.

Under the Nuclear Safety and Control Act (NSCA), licensees of nuclear facilities are required to implement an environmental monitoring program to demonstrate that the public and the environment are protected from emissions related to the facility's nuclear activities. The results of these monitoring programs are submitted to the CNSC to ensure compliance with applicable guidelines and limits, as set out in regulations that oversee Canada's nuclear industry.

The CNSC has implemented its IEMP to verify that the public and the environment around licensed nuclear facilities are protected. It is separate from, but complementary to, the CNSC's ongoing compliance verification program. The IEMP involves taking samples from public areas around the facilities, and measuring and analyzing the amount of radioactive (nuclear) and hazardous substances in those samples. CNSC staff collect the samples and send them to the CNSC's state-of-the-art laboratory for testing and analysis. Since the implementation of the IEMP, the area outside of the Pickering site perimeter was sampled in 2014, 2015 and 2017.

2017 Results

The 2017 IEMP sampling plan for the Pickering site focused on nuclear and hazardous contaminants. A site-specific sampling plan was developed based on OPG's approved environmental monitoring program and the CNSC's regulatory experience with the site. In 2017, samples were collected in publicly accessible areas outside the Pickering site perimeter and included air, lake water, soil, sediment and sand, grass and wild vegetation, and food such as milk, fruit and vegetables from a local farm near the Pickering site. View detailed sampling data.

The measured radioactivity levels in all the samples with detectable radionuclide concentrations were below CNSC reference levels. These reference levels are based on conservative assumptions about the exposure that would result in a dose of 0.1 mSv/year, which represents one-tenth of the CNSC's public dose limit of 1 mSv/year. Overall, the results indicate that no health impacts are expected at this dose level.

2015 and 2014 Results

The 2015 and 2014 IEMP sampling plans for the Pickering site focused on nuclear contaminants. Site-specific sampling plans were developed based on OPG's approved environmental monitoring program and the CNSC's regulatory experience with the site. In 2015 and 2014, samples were collected in publicly accessible areas outside the Pickering site perimeter and included lake water, soil and sand, air particulate, vegetation, and milk from a local farm near the Pickering site. View detailed sampling data.

The measured radioactivity in all the samples with detectable radionuclide concentrations were below CNSC reference levels, at one-tenth of the CNSC's public dose limit of 1 mSv/year. Overall, the results indicated that no health impacts were expected at this dose level.

Conclusions

All IEMP results confirm that the public and the environment in the vicinity of the Pickering site are protected and that there are no expected health impacts. These results are consistent with the results submitted by OPG, demonstrating that the licensee's environmental protection program protects the health and safety of people and the environment.

To obtain the full technical IEMP reports, contact us at cnsc.info.ccsn@canada.ca or call 613-995-5894 or 1-800-668-5284 (in Canada). Please indicate the name of the site and the report year.

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