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Connecticut Brownfield Sites. What are Brownfield Sites? real property, the expansion, redevelopment, or reuse of which may be complicated by the presence.

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Presentation on theme: "Connecticut Brownfield Sites. What are Brownfield Sites? real property, the expansion, redevelopment, or reuse of which may be complicated by the presence."— Presentation transcript:

1 Connecticut Brownfield Sites

2 What are Brownfield Sites? real property, the expansion, redevelopment, or reuse of which may be complicated by the presence or potential presence of a hazardous substance, pollutant or contaminant…". – CT DEP real property, the expansion, redevelopment, or reuse of which may be complicated by the presence or potential presence of a hazardous substance, pollutant or contaminant…". – CT DEP

3 What are Brownfield Sites? 1990s- Fed. And State Government decided to take action on land that was sitting unused because of the potential hazards that they contained. 1990s- Fed. And State Government decided to take action on land that was sitting unused because of the potential hazards that they contained. Unknown liabilities were preventing communities from restoring these sites. Unknown liabilities were preventing communities from restoring these sites.

4 What are Brownfield Sites? CT- state remediation programs and standards are in place to help promote the cleanup and redevelopment of sites. CT- state remediation programs and standards are in place to help promote the cleanup and redevelopment of sites. –Connecticut Remediation Standard Regulations Connecticut Remediation Standard RegulationsConnecticut Remediation Standard Regulations

5 Federal Brownfields Law Jan. 11, Federal Law expands assistance for brownfields assessment, cleanup, revitilization, and job training. Jan. 11, Federal Law expands assistance for brownfields assessment, cleanup, revitilization, and job training.

6 Stages of Brownfield Remediation Inventory of Sites: whats there and how much Inventory of Sites: whats there and how much Assessment: Can reclamation occur? Assessment: Can reclamation occur? Funding: Federal and/or Private Funding: Federal and/or Private –Amount required for each stage of redevelopment Remedial Design and Construction Remedial Design and Construction –Apply appropriate technology to clean or contain pollution –13 approved clean-up technologies just for USTs –Each site clean-up is specific to the pollutants and geology of that site Package site for sale or development Package site for sale or development

7 Assessment Develop understanding of: Develop understanding of: –Type of pollutants –Horizontal & vertical extent of pollution Impact on the environment Impact on the environment –Are streams, lakes, rivers polluted? –Is the underground water table polluted? –Is the pollution localized or widespread? –Are plants/animals affected?

8 Brownfields and You!

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10 Possible Contaminants Contaminant Possible source of contamination Heavy metals: arsenic, cadmium chromium, lead, mercury metal finishing/plating shops, manufacturing and foundries, coal burning power plants and landfills Gasoline/constituents of gasoline: gasoline, benzene, ethylbenzene, toluene, xylene gasoline stations, tank farms, pipelines Solvents: tetrachloroethlyene, trichloroethylene, III- trichloroethane dry cleaners, machine shops, metal finishing/plating shops Petroleum products leaking underground storage tank methane gas decomposing waste materials found in landfills PAH (polycylic aromatic hydrocarbons) PAHs are a group of over 100 different chemicals formed during the incomplete burning of many things including coal, oil, garbage, and cigarettes. Methane gasdecomposing waste materials present in landfills. explosive chemicals that are designed and produced for use as an explosive (e.g., TNT, explosive bolts, bullets, blasting caps, and fireworks). Explosives manufacturing company

11 Case Study: Waterbury, CT Development – Brass Mill Center Mall The long defunct, brass manufacturing center, once comprised of more than 90 decaying buildings The long defunct, brass manufacturing center, once comprised of more than 90 decaying buildings Processed brass until alternate/cheaper alternatives available Processed brass until alternate/cheaper alternatives available 100-acre downtown site, was prepared for a rebirth. 100-acre downtown site, was prepared for a rebirth.

12 Case Study: Waterbury, CT Development – Brass Mill Center Mall Removal of asbestos, lead paint, metals, solvents, oil, machinery, and polychlorinated biphenyls (PCB) contaminated materials. Removal of asbestos, lead paint, metals, solvents, oil, machinery, and polychlorinated biphenyls (PCB) contaminated materials. Over 200,000 cubic yards of debris was removed or recycled Over 200,000 cubic yards of debris was removed or recycled Soil vapor extraction and on-site treatment were used to treat the 155,000 tons of tainted soil. Soil vapor extraction and on-site treatment were used to treat the 155,000 tons of tainted soil.

13 Case Study: Waterbury, CT Development – Brass Mill Center Mall The entire demolition and remediation was completed well ahead of schedule and under budget The entire demolition and remediation was completed well ahead of schedule and under budget construction of the 1,300,000 square foot Brass Mill Center was then completed construction of the 1,300,000 square foot Brass Mill Center was then completed

14 Your Task Groups of up to 2 students will work together to research local Brownfield Sites Groups of up to 2 students will work together to research local Brownfield Sites You will gather information about the site and report back to your classmates in the form of a PowerPoint Presentation. You will gather information about the site and report back to your classmates in the form of a PowerPoint Presentation. –http://www.ct.gov/dep/cwp/view.asp?a=2715&q= http://www.ct.gov/dep/cwp/view.asp?a=2715&q= Your goals are to: Your goals are to: 1.Identify Contaminants Present 2.Identify the affects of the contaminants of the environment. 3.Determine how the site was/should be cleaned up

15 To be answered: General description of site: General description of site: –Name, Location, Site Definition Contaminants: Contaminants: –Types in location, Why are they there, affects on environment Investigation Investigation –formulate a question about the site that may be answered through scientific investigation and to design the investigation. –Do not worry about the specific steps needed to isolate the contaminant or specific techniques used to measure the contaminants effect on the environment. Focus on writing a general plan for your investigation including the independent and dependent variables to be studied, general procedures you will follow and the data you will collect.

16 Brownfield Research Sites Newhall Remediation Project, Hamden CT Newhall Remediation Project, Hamden CT –http://www.newhallinfo.org/ Raymark Industries, Stratford CT Raymark Industries, Stratford CT –http://yosemite.epa.gov/r1/npl_pad.nsf/cf430 d675d2ce aee0044e5a6/a4b8dbf11e d ?OpenDocument d675d2ce aee0044e5a6/a4b8dbf11e d ?OpenDocumenthttp://yosemite.epa.gov/r1/npl_pad.nsf/cf430 d675d2ce aee0044e5a6/a4b8dbf11e d ?OpenDocument


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