ECOLOGY - USA - Pollution Rules Face Trouble From Outset
New York,USA -New York Times,by ANTHONY DePALMA -March 28 2005: -- Once praised as a national model, a new law to reduce air pollution at New York City construction sites may end up being weakened before it can ever be enforced ... proposed regulations are vague about the types of filters that can be used. Contractors may choose superefficient ones that can cost $12,000 or more per engine and cut emissions by 95 percent, or less effective models for as little as $2,000 that remove only 25 percent of pollutants... http://www.nytimes.com/2005/03/28/nyregion/28regs.html
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