86 resultados para Air quality monitoring stations


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Transportation Department, Office of the Assistant Secretary for Systems Development and Technology, Washington, D.C.

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Transportation Department, Secretary of Transportation, Washington, D.C.

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Transportation Department, Secretary of Transportation, Washington, D.C.

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Transportation Department, Office of the Assistant Secretary for Systems Development and Technology, Washington, D.C.

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Federal Highway Administration, Washington, D.C.

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Mode of access: Internet.

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Mode of access: Internet.

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"Printed: March 1990."

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Cover title.

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Mode of access: Internet.

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"The Illinois Environmental Protection Agency monitors surface waters (i.e. lakes and streams) through a variety of programs. The most extensive is the Ambient Water Quality Monitoring Network (AWQMN) which consists of 203 stream stations statewide sampled on a 6 week cycle since October 1977." -- p. 1.

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Project no. 90.029.