A potential wastewater solution for the Woodacre and San Geronimo Flats has been scaled back. After years of planning, the county’s engineer has determined that the project should be confined to Woodacre and the treatment plant located at a newly selected site: the Dickson Ridge, above the eastern end of San Geronimo Valley Drive.

At a virtual meeting late last month, Questa Engineering updated residents on six alternatives that range from repairing individual septic systems…