D. 24

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D. 24

• Mr. Fleming

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D.24

• D.24 Explain how the accumulation of mercury,
  phosphates and nitrates affects the quality of
  water and the organisms that live in rivers,
  lakes and oceans.

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What is a Brownfield?

• ..real property, the expansion, redevelopment,
  or
• reuse of which may be complicated by the
  presence
• or potential presence of a hazardous substance,
  pollutant or contamination. (US EPA)
• Land that contains low to moderate levels of
  contamination
• Contamination can include
• Old gas stations (lead based gas)
• Old factories that used toxic metals like LEAD or
  MERCURY
• Cleaning solvents
• Can be redeveloped with environmental cleanup

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ASBESTOS
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LEAD PAINT.
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UNDERGROUND STORAGE TANK
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POTENTIAL FOR CONTAMINATION
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STAINED SOILS
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POTENTIAL FOR CONTAMINATION?
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POTENTIAL FOR CONTAMINATION
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The inventory can be detailed
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THE COMMUNITY DEFINES ITS BROWNFIELDS

• EPA provides the guidance, but it is the
  community that identifies a property as a
  Brownfield
• Abandoned property
• Active but Underutilized
• Real estate turnover complicated by real or
  perceived contamination
• Property use Blighted significantly conflicts
  with a master plan

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Utilize Resources on-line

• Where you live...Search your Environment by Zip
  code
• http//www.epa.gov/epahome/commsearch.htm
• Other Program information and Support
• http//www.epa.gov/brownfields
• http//www.epa.gov/compliance/environmentaljustice
  /index.html
• http//www.epa.gov/smartgrowth
• http///www.smarte.org

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More On-line resources State Websites

• Virtual File Cabinet
• http//www.in.gov/idem/4101.htm
• Select Virtual File Cabinet
• Search by County, City, Town, Zip code
• For Brownfield Program Resources and Support
• http//www.brownfields.in.gov

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Brownfield Recall Question

• What are the three categories of major
  contaminants in a brownfield?
•  

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D.24

• D.24 Explain how the accumulation of mercury,
  phosphates and nitrates affects the quality of
  water and the organisms that live in rivers,
  lakes and oceans.

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Eutrophication Recall

• 1. Describe how eutrophication occurs?
• Phosphate and nitrogen runoff cause
• algal blooms. This algae dies and
  microrganisms decompose it absorbing oxygen and
  creating sediment.

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Eutrophication Recall

• 2. How does eutrophication impact the
  environment?
• It lowers the amount of available oxygen.

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Bioaccumulation vs Biomagnification

• Bioaccumulation refers to the accumulation of
  substances, such as pesticides, mercury and other
  toxins in an organism over time.
• Biomagnification refers to the accumulation of
  toxins through the trophic levels of a food
  chain. It results in an increased concentration
  of the toxin in the higher organisms of the food
  chain. 

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Bioaccumulation
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Bioaccumulation Recall

• What happens to the concentration of toxins as
  you move up the food chain?
• They tend to increase as you go from the prey to
  predator up the food chain.

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