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Tire Garden: Getting Unconventional Mileage
The EPA has estimated that there are as many as two billion to three billion stockpiled scrap tires. A truly accurate count of the nation's tire waste may be impossible, since so many tires are casually and illegally dumped in creeks, lakes and ravines, on fields, vacant lots and side streets. In 1990, the Bureau of Street Maintenance in Los Angeles reported that it collected 18 million abandoned tires.