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Published byAgatha McDonald Modified over 9 years ago
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GHS Science CAPT Embedded Task Brownfield Sites
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Does this place look familiar?
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CosCob Power Plant = Brownfield Site
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What is a Brownfield Site? Piece of land that was once used for industrial purposes and is now typically abandoned because of suspected contamination.
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What is a contaminant? A contaminant is a toxic chemical that can harm humans and/or the environment. Contaminants can pollute water, air, and/or soil. MercuryBenzene Arsenic
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Contaminants of Major Concern Asbestos – Cause respiratory problems Pesticides – Cause cancer & birth defects Benzene – Causes cancer Lead and Copper - Neurotoxic Mercury – May cause physical and mental disorders. PCBs – Possible cause of cancer & birth defects
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Think… Think of another site/place in Greenwich that might become a Brownfield site in the future. How would a site become contaminated?
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Where do contaminants come from? ContaminantsPossible source of contamination Heavy metals: arsenic, cadmium chromium, lead, mercury metal finishing/plating shops, manufacturing and foundries, coal burning power plants Gasoline/constituents of gasoline: gasoline, benzene, ethylbenzene, toluene, xylene gasoline stations, tank farms, pipelines Petroleum ProductsLeaking undergound storage tanks Solvents: tetrachloroethlyene, trichloroethylene, III-trichloroethane dry cleaners, machine shops, metal finishing/plating shops
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Remediation: Making Brownfield sites safe and usable again… Identify and measure contaminants Determine the safety risks Stop the contaminants from spreading Remove or isolate the contaminants
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Why Redevelop Brownfield Sites? Discounted real estate cost Valuable location Reduce pressure on undeveloped land Preserve historical or architecturally significant buildings Eliminate health and safety hazards Improve community
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Your Task 11 1.Formulate a question/problem statement about a Brownfield site that can be answered through a scientific experiment/investigation. 2.Design a scientific experiment/investigation that answers your question/problem statement.
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