AUGUSTA, Maine — The state's insurance bureau met a deadline Wednesday to report on how much some Maine consumers and businesses will pay for health coverage under the Affordable Care Act, often called Obamacare, but the impact of the new federal health law remains unclear. The bureau released hundreds of pages of documents filed by two insurance carriers that plan to offer policies on Maine's health insurance exchange, an online marketplace where consumers and small businesses will be able to shop this fall under the Affordable Care Act. Wednesday was the deadline for regulators in Maine and other states to approve insurance rates for the exchanges and report to the federal government.