EESA06H3 Lecture Notes - Lecture 11: Walkerton, Ontario
Document Summary
Exam: focus on plate tectonics and chapter 20. Toronto: huge demand for concrete, gravel j using up the local resources of rock. Lake ontario j putting a lot of sewage in: surface water j very sensitive to contaminants and pollution. Rocks have fractures, from which water goes through the cracks. Water goes down through the waste and interacts with the waste producing leech ate. Brown field sites j tear the buildings down and building something new: understand what was there before. Biological agents used to clean remediated sites: hydrocarbons love the bacteria horse manure. Break down of uranium: uranium to lead. Breaks down into polonium, people breathe that in, producing lung cancer. Canada has a lot of granite containing uranium and a lot of shales which also have a lot of uranium. We l know the effects of it after 20 years. Environmental impact of resource extraction and energy supplies.
