Learn how easy it is to compost yard debris and food scraps in your own backyard. This workshop also covers vermicomposting - the process of using worms to turn food waste into a nutrient-rich compost that your garden will love. Sponsored by the Central Contra Costa Solid Waste Authority. Workshop reservations are required. To register, please call (925) 906-1801 x306 or http://www.wastediversion.org/class_sessions/view/108.