See Polycyclic Aromatic Hydrocarbons.
Part 70 Permit
A federal regulation that defines
the requirements for permitting facilities for air emissions. States with federally-approved
permit programs administer the permitting of facilities within their state. Related
Programs - Minnesota Rule Chapter 7007, 1990
Clean Air Act Amendments
small separate particles composed of organic or inorganic matter.
Parts per Billion ppb
The number of parts of a substance
per billion parts of another substance into which it is combined. Often expressed
as micrograms per liter for water and micrograms/kilogram for fish and sediments.
Parts per Million ppm
The number of parts
of a substance per million parts of another substance into which it is combined.
Often expressed as milligrams/liter water or milligrams/kilogram for fish tissue
Parts per Thousand ppt
number of parts of a substance per thousands parts of another substance into which
it is combined. Often expressed as grams/liter of water or grams/kilogram for
fish tissue and sediments.
that grow attached to surfaces such as rocks or larger plants.
Persistent Toxic Substance
A toxic pollutant
that remains in the environment for a substantial period of time, potentially
causing injury to ecosystem health.
A numeric value that indicates relative acidity and alkalinity on
a scale of 1 to 14. A pH of 7.0 is neutral, higher values indicate increasing
alkalinity; lower values indicate increasing acidity.
Algae that grow suspended in the water column
or open waters of a lake.
A term used
to describe bacteria, tiny plants (phytoplankton) and
animals (zooplankton) that live in the water column of
Point Source Pollution
Pollution from a distinct, identifiable source, such as a pipe, smokestack, or
Chemicals or refuse material
released into the atmosphere or water or onto the land.
This is defined in the Minnesota
Toxic Pollution Prevention Act as eliminating or reducing at the source the
use, generation, or release of toxic pollutants. Methods
of reducing pollution include, but are not limited to, industrial process modification,
inventory control measures, feedstock substitutions, various housekeeping and
management practices, and improved efficiency of machinery. The federal version
of this term is source reduction.
Prevention Act of 1990
A federal law that establishes a national
policy of pollution prevention, and requires the EPA
to develop and implement a strategy to promote source reduction.
This act declares as national policy that pollution prevention is the preferred
approach to environmental protection.
One of the nine critical pollutants,
PCBs are a group of over 200 nonflammable compounds formerly used in heating and
cooling equipment, electrical insulation, hydraulic and lubricating fluids, and
various inks, adhesives, and paints. These compounds are highly toxic to aquatic
life, persist in the environment for long periods of time, and are bioaccumulative.
PCBs are suspected carcinogens, and are linked to infant
development problems. Fish from some lakes and streams in Minnesota contain measurable
amounts of PCBs. See also Fish Consumption Advisory. Related
Program - Binational Program
Aromatic Hydrocarbons PAHs
A family of organic chemicals based on the chemical
structure of benzene which result from incomplete combustion of organic
chemicals and are associated with grease and other components derived
from petroleum byproducts. Some examples of the many PAH compounds include;
benz(a)anthracene, beno(b)fluoranthene, benzo(a)pyrene, chrysene, phenanthrene,
treatment required for some industries. Pretreatment removes some types of industrial
pollutants before the wastewater is discharged to a municipal wastewater
amount of production of living organic material through photosynthesis by plants,
including algae, measured over a period of time.
The first step in wastewater treatment in which
most of the debris and solids are removed mechanically.
Pollutants identified in certain
federal and state regulations. Priority pollutants have different definitions
in air, water, and waste programs.
See Great Lakes National Program Office.
Minnesota Waters of the State
identified as public waters or wetlands under MN Statutes.
Generally, public waters are water
bodies determined by Minnesota statutes to have significant public value. They
are controlled by the state (103G.005).
Public Waters Wetlands
A class of wetlands defined by the state of Minnesota as public
waters deserving of a certain level of protection under the Wetland
Conservation Act. These include all Types 3, 4, and 5 wetlands, as defined
in U.S. Fish and Wildlife Service Circular No. 39 (1971
edition), that are ten or more acres in size in unincorporated areas, or 2-1/2
or more acres in size in incorporated areas.
Treatment Works POTW
Any device or system that is used in treatment,
including recycling and reclamation, of municipal sewage. Related Program - Clean
Water Act, 40 CFR
A wetland plant from Eurasia that quickly invades water
bodies, including the Great Lakes, forming dense stands
unsuitable as cover, food, or nesting sites for fish, amphibians, waterfowl and
wildlife. Imported as an ornamental plant, it spread quickly across North America
along roads, canals and drainage ditches. Research on the use of European beetles
that attack only purple loosestrife shows promise for biological control in North