The Environmental Protection Agency is preparing to weaken rules that for the past quarter-century have given communities a voice in deciding how much pollution may legally be released by nearby power plants and factories. The changes would eliminate the ability of individuals or community advocates to appeal against E.P.A.-issued pollution permits before a panel of agency judges. However, the industrial permit-holders could still appeal to the panel, known as the Environmental Appeals Board, to allow them to increase their pollution. The proposed change is the latest in the Trump administration's long-running effort to roll back environmental regulations and reduce regulatory burdens on industry, including the June announcement of a new E.P.A. rule that would weaken regulations on planet-warming greenhouse pollution from power plant smokestacks, the expected late-summer announcement of a similar plan to weaken rules on vehicle tailpipe pollution, and a 2018 proposal to open much of the United States coastline to oil drilling. Environmental law experts said the proposed rule change would not only grant industry a broader role in influencing the E.P.A. to issue more lenient pollution permits, but could disproportionately harm poor and minority communities, which are statistically more likely to be located near polluting sites. The proposed change to the Environmental Appeals Board process could be made public as soon as the coming week.