May 20, 7:30 a.m. — Headwaters* (parking lot on Wichman Rd. off north side of Rt. 72; ½ mile west of Rt. 59) May 27, 7 a.m.— Paul Douglas Preserve, Hoffman Estates (use the Grassy Ridge Meadow Entrance on West Central Road, between Ela Road and Freeman Road, park all the way at the end of the lot). June 3, ...