Cancer Risk Factors in Alaskan Natives
Explore the complexities of cancer risk factors in Alaskan Natives, including the debate surrounding the use of the highest possible values and the impact on water quality. Discover the incremental lifetime cancer risk level and EPA regulations regarding fish consumption rates. Uncover the recommendations and dissenting opinions in efforts to improve and protect Alaska's water quality.
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Presentation Transcript
Issue 4: Cancer Risk Factor Does not appear to be consensus Support for use of highest value possible Based on high rates of cancer in Alaskan Natives Support for status quo based on lack of data demonstrating need Concern that more stringent value will not result in lower contaminates in fish. Improving and Protecting Alaska's Water Quality 1
Incremental lifetime cancer risk level The incremental lifetime cancer risk level (ILCRL) is the amount of additional risk that could be assigned to a pollutant. Adds another layer of protection to humans beyond the toxicity factor- using it drives criteria lower ILCRL Environmental sources = 2% of cancer mortality rate Improving and Protecting Alaska's Water Quality 2
Cancer in AK DHSS/ANTHC point of view DEC posed a series of questions to DHSS/ANTHC in regards to cancer and exposure from environmental sources See handout Improving and Protecting Alaska's Water Quality 3
Risk Management: Incremental Lifetime Cancer Risk Level Allowable cancer risk level range from 1 in 100,000 (10-5) or 1 in 1,000,000 (10-6) EPA understands that fish consumption rates vary considerably, especially among subsistence populations, and it is such great variation among these population groups that may make either 10-6or 10-5protective of those groups at a 10-4 risk level. And must not exceed 1 in 10,000 (10-4) for those who eat more fish than others EPA (2000) P. 2-6 Improving and Protecting Alaska's Water Quality 4
Recommendation Consensus? Dissenting Opinion? Improving and Protecting Alaska's Water Quality 5
