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 Power Generating Site

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

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@cnsc-ccsn.gc.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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