Notes - Chapter 7.pdf - CIV ENG 2B04 Principles of Environmental Engineering Chapter 7 Water Quality 1 Historical Perspective Dr John Snow and Dr

Notes - Chapter 7.pdf - CIV ENG 2B04 Principles of...

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Chapter 7 Water Quality CIV ENG 2B04 - Principles of Environmental Engineering 1
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Dr. John Snow and Dr. William Budd - First environmental scientists - Demonstrated the relationship between contaminated water and disease Historical Perspective 2
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Examples of Water Pollution Cuyahoga River, US Love Canal, US Minamata, Japan Walkerton, Canada Chesapeake Bay and Neuse River, US 3
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Cuyahoga River Flows from Northeast Ohio into Lake Erie Caught fire in June 1969 and burned for 8 days - Fireboats sent to battle blaze, spread fire when water from river was used 4
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Cuyahoga River Pollutants Sewage, manure - nitrogen, phosphorus - pathogenic organisms - biodegradable chemicals Fertilizers - nitrogen, phosphorus Pesticides, oil Toxic chemicals Sediments 5
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Cuyahoga River Helped to spur the environmental movement in the US - Clean Water Act (1972) - Great Lakes Water Quality Agreement (1972) - The creation of the federal and state Environmental Protection Agencies (EPA- 1970) 6
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Love Canal Niagara Falls, New York 1890s, William T. Love, hydropower utilization project 1910, project failed 1920s, Niagara purchased the land for chemical dumping 1942 -1953, the Hooker Chemical Company dumped ~22,000 tonnes of chemical waste till the canal was full 7
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Love Canal (cont’d) 1953, Hooker covered the canal with earth and sold it to the city for $1 Late 1950s, ~100 homes and a school were built at the site 1976, heavy rains caused canal to ‘explode’, contaminating the entire neighborhood 1978, state health commissioner, Dr. Robert P. Whalen, declared area around Love Canal hazardous 8
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Love Canal (cont’d) Higher than normal incidences of stillborn births miscarriages, and birth defects Over 1000 families were evacuated (eventually) Took 20 years and 400 millions to clean up (Hooker contributed $130 million) The ‘Superfund’ law: Comprehensive Environmental Response, Compensation, and Liability Act (1980) 9
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