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glossary of the great lakespage
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Lacey Act
Lake Carriers Association
Lake Michigan Mass Balance Study
Lake Superior
Lake Superior Basin
Lake Superior Binational Forum
Lake Superior Binational Program to Restore and Protect the Lake Superior Basin
Lake Superior Biosphere Reserve
Lake Superior Center LSC
Lake Superior Lakewide Management Plan LaMP
Lake Superior Partnership
Lake Superior Pollution Prevention Strategy P2 Strategy
Lake Superior Pollution Prevention Team
Lake Superior Project
Lake Superior Research Institute LSRI
Lake Superior Task Force
Lakewatch Program
Lakewide Management Plan LaMP
Large Lakes Observatory LLO
Leachate
Legislative Commission on Minnesota Resources LCMR
Lethal Concentration 50% LC50
Lethal Dose 50% LD50
Levels Reference Study
Limited Resource Value Waters
Limnology
Load
Load Allocation LA
Load Capacity
Local Governmental Unit LGU
Lowest Observable Effect Concentration LOEC

Lacey Act
This act, enforced by the U.S. Fish and Wildlife Service, is designed to control environmental releases of injurious fish and wildlife. This law includes species that threaten non-agricultural interests.

Lake Carriers Association
This organization, established in 1880, represents U.S. maritime shipping companies throughout the Great Lakes. Its mission includes: safe, efficient shipping procedures; Great Lakes shipping statistics; consultation on ice-breaking issues; harbor and channel dredging; sediment disposal; and environment and commerce regulations and legislation.

Lake Michigan Mass Balance Study
This mass balance research project, begun in 1994, is part of the Lake Michigan Lakewide Management Plan and is designed to develop a sound, scientific base of information that will guide future toxic pollutant load reduction and prevention activities. Related Programs - Great Lakes Toxic Reduction Effort, Lakewide Management Plan, Clean Air Act, Clean Water Act

Lake Superior
At the head of the Great Lakes System, Superior is the world's largest freshwater lake by surface area and long considered the cleanest and most pristine of the Great Lakes. Industrial activity, shipping, and atmospheric inputs of persistent and bioaccumulative toxic substances have raised concerns about the lake's water quality.

Lake Superior Basin
Used to describe Lake Superior and the surrounding watersheds emptying into the lake.

Lake Superior Binational Forum
This international program consists of a cross-section of basin stakeholders, including representatives from environmental and native groups, industries, and municipalities in the Lake Superior Basin. It provides citizen input into the Binational Program concerning reductions in the use and discharge of toxic substances into the basin. The forum identifies barriers to reductions in pollutant use and proposes alternatives for overcoming those barriers. Related Programs - Binational Program

Lake Superior Binational Program to Restore and Protect the Lake Superior Basin
See Binational Program.

Lake Superior Biosphere Reserve
An international undertaking that would identify portions of the lake for special protection or study. Proposals to create a binational Lake Superior Biosphere Reserve as part of the United Nations' Man and the Biosphere program are under review by the United States and Canada.

Lake Superior Center LSC
An education/exhibition facility on freshwater systems and Lake Superior, located in Duluth, MN. Home of Superior Lakewatch.

Lake Superior Lakewide Management Plan LaMP
A binational plan to address threats to the Lake Superior ecosystem. The LaMP embodies a systematic and comprehensive ecosystem approach to restoring and protecting beneficial uses. It will be developed in four stages. The Stage I LaMP (current version) applies only to the nine designated critical pollutants from the zero discharge demonstration program for point source discharges. Later stages of the LaMP will address these and additional critical pollutants that are designated during the LaMP process, for point and nonpoint sources. See also State of the Lake Superior Basin Reporting Series. Related Programs - Great Lakes Water Quality Agreement, Binational Program

Lake Superior Partnership
A partnership between the state of Minnesota and the Western Lake Superior Sanitary District in Duluth that conducts multi-media inspections to insure compliance and identify pollution prevention opportunities for dischargers.

Lake Superior Pollution Prevention Strategy P2 Strategy
A federal/state action plan consisting of recommendations for achieving the goal of eliminating pollution at its source and evaluating recycling, treatment, and disposal options where source reduction is not possible. The focus of the Pollution Prevention Strategy is the nine critical pollutants identified by the Zero Discharge Demonstration Program. Commonly called the P2 Strategy. Related Programs - Binational Program, Great Lakes National Program Office

Lake Superior Pollution Prevention Team
An organization that developed the Lake Superior Pollution Prevention Strategy. The team is made up of regulatory staff from Minnesota, Michigan, Wisconsin, and the Great Lakes National Program Office. Related Programs - Binational Program

Lake Superior Project
An EPA-administered program that establishes a strategy and implementation plan for pollution prevention technical assistance for small and medium-sized businesses in the Lake Superior Basin. Related Programs - Council of Great Lakes Governors

Lake Superior Research Institute LSRI
A University of Wisconsin-Superior center that conducts research and education specifically on Lake Superior. Originally called the Center for Lake Superior Environmental Studies. Related Programs - University of Wisconsin-Superior

Lake Superior Task Force
An international organization made up of the senior managers who developed the Binational Program to Restore and Protect Lake Superior and who continue to provide direction to the Superior workgroup of the Binational Program.

Lakewatch Program
See Superior Lakewatch.

Lakewide Management Plan LaMP
The binational programs called LaMPs provide a process for coordinating and prioritizing activities designed to reduce loadings of critical pollutants. The emphasis is on identifying the major sources of these pollutants and concentrating regulatory efforts where they will have the most impact. LaMPs are being developed for each of the Great Lakes. See also Lake Superior LaMP.

Large Lakes Observatory LLO
This University of Minnesota organization, established in 1994, supports and performs research on large lakes of the world including Lake Superior. It was formerly called the Institute for Lake Superior Research. Related Programs - University of Minnesota

Leachate
The contaminated liquid resulting from water seeping through a landfill or other materials. Chemicals such as fertilizer are leached from the soil when rainwater travels through the soil.

Legislative Commission on Minnesota Resources LCMR
The LCMR recommends funding for natural resource programs to be financed by the Minnesota Future Resources Fund, the Minnesota Environment and Natural Resources Trust Fund, and Federal Oil Overcharge Funds. Funds have been used for a number of projects related to Lake Superior, such as public boat access improvement.

Lethal Concentration 50% LC50
A statistically or graphically estimated concentration that is expected to be lethal to 50% of a group of organisms under specified conditions.

Lethal Dose 50% LD50
A statistically or graphically estimated dose that is expected to be lethal to 50% of a group of organisms under specified conditions.

Levels Reference Study
A report that suggested methods to alleviate the adverse consequences of fluctuating water levels in the Great Lakes-St. Lawrence River System. The Levels Reference Study Board, appointed by the International Joint Commission, completed the report in 1993 after an intensive public involvement process in the U.S. and Canada.

Limited Resource Value Waters
Surface waters in Minnesota which are of limited value as a water resource and where water quantities are intermittent. These waters are protected to allow secondary body contact use, to preserve the groundwater for use as a drinkable water supply, and to protect aesthetic qualities of the water. Related Programs - Minnesota Rule Chapter 7050

Limnology
The scientific study of freshwater, especially the history, geology, biology, physics, and chemistry of lakes.

Load
An amount of water, sediment, nutrients, pollutants, heat, etc. that is introduced into a receiving water. Loading may be either of anthropogenic origin (pollutant loading) or natural (natural background loading). Related Programs - Water-related Code of Federal Regulations and Rules (40 CFRs), Clean Water Act, MN Rule Chapter 7050

Load Allocation LA
The portion of a receiving waters load capacity that is attributed either to nonpoint sources of pollution or to natural background sources. Load allocations are best estimates depending on the availability of data and prediction techniques. Wherever possible, natural and nonpoint source loads are distinguished. Related Programs - Water Related Code of Federal Regulations

Load Capacity
The greatest amount of load that a water body can receive without violating water quality standards. Related Programs - Water related Code of Federal Regulations and Rules, Federal and State Statutes

Local Governmental Unit LGU
A county board, joint county board, watershed management organization, watershed district or a township, or city. Related Programs - Wetlands Conservation Act, Wetlands Conservation Act Rules

Lowest Observable Effect Concentration LOEC
For toxic substances, it is the lowest tested concentration at which adverse effects are observed in aquatic organisms at a specific time of observation.

 

 

 

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