SYLVANIA — Beginning a public hearing Tuesday at the Screven County Library, representatives of the Kinder Morgan company announced that a section of the proposed Palmetto Pipeline will be rerouted to avoid a Revolutionary War battleground. This pleased some people concerned about the 1779 Battle of Brier Creek site, which overlaps the boundaries of the Tuckahoe Wildlife Management Area and is believed to contain the mass graves of about 150 patriot soldiers. But the 360-mile motor fuel pipeline, which would cross under the Savannah River south of Augusta and remain close to the river in Screven and Effingham counties, still faces opposition from the Savannah Riverkeeper, several other Riverkeeper and environmental organizations and some local residents.