Alameda Creek Alliance Does watershed and creek work in the Alameda Creek area (includes Arroyo de la Laguna, Arroyo del Valle, Arroyo Mocho, Sinbad Creek and Stonybrook Creek) in the Fremont, Livermore, Pleasanton, Sunol and Union City areas. Website: www.alamedacreek.org/Email: Jeff@alamedacreek.orgPhone: 510 499-9185Mailing Address:P.O. Box 2626Niles, CA 94536-0626Date Updated: 6/12/2013