Tunney’s Pasture

Health Protection Branch, Department of National Health and Welfare, Tunney s Pasture, Ottawa, Ontario KIA 0L2, Canada... 

Tunney s Pasture in Ottawa in 1973, in which oxidant concentrations approached 0.14 ppm. This episode took place on a July weekend, and the nitrogen dioxide and NOx concentrations appear to be very small. Nonmethane hydrocarbons, however, were relatively high, about 0.6 ppm. 

FIGURE 4-7 Ozone, nitrogen dioxide, NO, and nonmethane hydrocarbon concentrations in pollution episode at Tunney s Pasture, Ontario. Redrawn from Quickert et al. ... 

Sylvia Waara Institutionen for Samhallsteknik Department of Public Technology Malardalen University Box 883 721 23 Vasteras Sweden Paul A. White Mutagenesis Section, Safe Environments Program, Healthy Environments Consumer Safety Branch, Health Canada, Tunney s Pasture 0803A, Ottawa, Ontario Canada, K1A 0L2... 

Health Canada Tunney s Pasture Address Locator 0701C Ottawa Ontario K1A 0K9 Canada Tel 00 1 613 948 7973 Fax 00 1 613 948 7996 www.hc-sc.gc.ca/dhp-mps/advert-publicit/index e.html... 

Pat E. Rasmussen, Health Canada, University of Ottawa, 50 Columbine Driveway, Tunney s Pasture 0800C, Ottawa ON, KIA 0K9, Canada, e-mail pat.rasmussen hc-sc.gc.ca... 

Environmental Health Directorate Health Protection Branch Health Canada Environmental Health Centre 19th Floor, Jeanne Mance Building Tunney s Pasture Ottawa. ON KIA 0L2 Canada (613) 957-3143... 

The new building took longer to finish than a normal structure because of the special features that had to be incorporated to accommodate all these activities. The handling of radioactive materials required more customized installations than did any other function, especially because significant improvements in safety standards were incorporated. The radioactive materials processing faciUties at Tunney s Pasture would segregate distina functions much more rigorously than thqr had ever been at Port Hope or Chalk River. Radium and cobalt-60 would each have a separate production line, and there would be a third line for all other isotopes. 

In the meantime the opening of the Tunney s Pasture building receded further into the future. It was not until January 1955 that the first CPD staffers occupied their new... 

Carbon-14 stocks stored at Tunney s Pasture. This radioisotope is best knoum frr its application in carbon dating, but it was also used as a tracer in agricultural experiments and other research. 

The Tunney s Pasture building had been paid for by AECL as part of its original isotope-distribution deal with Eldorado. This time AECL would provide a loan to help pay for CPDs new building, but CPD would ultimately have to repay it with interest. The first facility in Kanata - a new manufecturing plant - started production on August 16, 1965, sixteen months after it had been approved. The next phase was a five-storey office tower to house CPDs administration, finance, and marketing departments. 

Early in 1968, these departments moved into their new quartets. The space they left behind at Tunney s Pasture went to the research and isotope departments, which were expected to follow the rest of the company to the new location as soon as it could afford to build them appropriate facilities. ... 

Irradiation equipment won acceptance much more easily in medical circles, where CPD already sold most of its products. In the early 1950s, people in the nuclear field were excited about the possibilities of their technology and preoccupied with the notion that almost anything could be improved through irradiation. Irradiation experiments had to be conducted within shielded containers to prevent radiation leakage. Sometimes the researchers at Tunney s Pasture used a beam therapy-unit head loaded with a cobalt-60 source at other times they used the cases designed to transfer cobalt-60 sources. As they adapted these pieces of equipment for experiments, it occurred to them that there would probably be a market for a device constructed specifically for the purpose. Best of all, equipment of this sort would provide another outlet for CPD s cobaIt-60. Discussions with possible customers at universities, research laboratories, and hospitals confirmed that they could use such a device either to experiment with irradiations or to irradiate small amounts of material on a routine basis. 

Marty McGuire tends to a Slowpoke reactor in the pool facility at Tunney s Pasture in May 1971. Most of these small reactors were sold to universities where they were used far research and teaching purposes. 

Bothwell s interviews with Errir on. Errington would later credit C.J. Mackenzie with ehoosing the site, noting that he should have sought another location because prevailing winds would have carried any accidental emissions from Tunney s Pasture towards the city. 

Ullyett, Radioisotopes, 13 CPD Annual Report, 1970-1. The installation of additional charcoal filters at Tunney s Pasture to reduce emissions of iodine-131 was an extra expense. 

IH CHU, DAVID C. VILLENEUVE, DUNCAN J. MURDOCH and ANDR VIAU Bureau of Chemical Hazards, Environmental Health Directorate Tunney s Pasture, Ottawa, Ontario K1A 0L2 CANADA... 

Toxicology Research Division Health and Welfare Canada Tunney s Pasture Ottawa, Ontario KlA OL2 Canada... 

Chief, Poison Control and Adverse Reaction Reporting Programs Division Bureau of Epidemiology, Laboratory Centre for Disease Control Health Proteetion Branch Department of National Health and Welfare Tunney s Pasture OTTAWA, Ontario KIA 1B8 Canada... 

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