Word: greated
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Dates: during 1970-1979
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Even contamination from DDT, which some scientists had predicted would take hundreds of years to be washed out of the Great Lakes, is only 10% of what it was ten years ago. Says Wayland Swain, director of the EPA's Large Lakes Research Laboratory in Grosse He, Mich...
...environmentalists' major concern The levels of such chemicals as mirex (an insecticide), PCBs and mercury are still too high to allow the resumption of commercial fishing, and Canada publishes a guide that warns sports fishermen which fish are unsafe to eat. Says Leila Botts, chairman of the Great Lakes Basin Commission...
...learn more about the problems of he Great Lakes, we discover that it's not as easy as it first appeared when we assumed that if we'd just get industry and the municipalities to clean up their acts, we'd have clean water. Now we've largely done that, and we discover that there are dangerous toxic substances in the lakes we didn't even know about before...
Thus the problems of the Great Lakes are not solved because the beach at Storing State Park on Lake Erie is officially opened again for the first time since 1961, or because the Cuyahoga River, while gray and sulky looking, is relatively free from oil and jetsam, or because the water treatment plant in Chicago is having fewer taste and odor problems. Says EPA's Swain: "We still have a long way to go before we solve the problems of toxic substances. Then there is a whole series of new environmental issues." Among them: sodium from the salt used...
...economy of several ports. But environmentalists fear that disruption of the lakes' whiter ice cover would cause damage to fish and plant life. The energy crisis has made state governments less resistant to suggestions that gas and oil explorations- with their potential for pollution- be undertaken in the Great Lakes basin. (Canada already takes natural gas from Lake Erie.) These problems are not insoluble, but they will require a subtlety of technology and policy quite different from the massive input of dollars that cured many of the lakes' ills during the 1970s. "Basically I'm optimistic," says...