3

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Source: Council on Environmental Quality, 1993, Environmental quality, 23rd annual report, (Washington, D.C. [January]).

Note: Violation levels are based on U.S. EPA water quality criteria: FC bacteria—above 200 cells per 100 mi; dissolved oxygen—below 5 mg/l; total phosphorus— above 1.0 mg/l; cadmium, dissolved—above 10 fg/l; and lead, dissolved—above 50 fg/l. * = base figure too small to meet statistical standards for reliability of derived figures.

Source: Council on Environmental Quality, 1993, Environmental quality, 23rd annual report, (Washington, D.C. [January]).

Note: Violation levels are based on U.S. EPA water quality criteria: FC bacteria—above 200 cells per 100 mi; dissolved oxygen—below 5 mg/l; total phosphorus— above 1.0 mg/l; cadmium, dissolved—above 10 fg/l; and lead, dissolved—above 50 fg/l. * = base figure too small to meet statistical standards for reliability of derived figures.

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