The Marin Resource Conservation District passed another milestone in its efforts to help local ranchers reduce runoff of sediment and pathogens into Tomales Bay: the completion of its third Conserving our Watersheds program, or COW III. Working with six local ranches, the R.C.D. restored and fenced off a total of four miles of eroded creek beds, planted native grasses and over 1,000 native shrubs and trees and helped develop five alternative water sources, all with…