Big Polluters Told to Report Emissions The new rules would require 10,000 industrial sites and suppliers of petroleum products to submit the data beginning in 2011. Suppliers of fossil fuels(石油)will be asked to estimate how much carbon dioxide(二氧化碳), methane(甲烷) and other greenhouse gases are emitted when the fuels are burned by businesses and consumers in buildings and cars, the agency said. The E. P. A. said it had no firm estimate on how many businesses had the training and systems in place to report on their emissions. But a large percentage of those covered by the new regulations are already required to report emissions under other programs sponsored by the agency, it said. The agency said it had also been reaching out to businesses and offering training in how the emissions can be measured. The E. P. A. said the reposing system would provide vital data to businesses seeking to compare and control their emissions and better information to the government, which has been trying to forge (形成) a policy on how to combat climate change since President Obama took office. Yet the rules, proposed last March, remain controversial. Many businesses have asserted that the reporting requirement is a first step toward burdensome and needless government regulation. Senator Lisa Murkowski, Republican of Alaska, has been circulating a draft amendment(修正案) to a federal budget bill that would prevent the E. P. A. from spending money to regulate carbon dioxide emissions from non- mobile sources. But some business organizations have recently taken a less antagonistic stance (反对态度). "We have always supported transparency (透明度)and do not oppose the reporting requirement," said Bill Kovacs, senior vice president for environment, technology and regulatory affairs at the United States Chamber of Commerce. The reporting system was proposed by President Obama when he took office.