State California GC Sec 66664-66664.6 DEFINITIONS GOVERNMENT CODE SECTION 66664-66664.6 66664. "Bay" means all portions of San Francisco Bay, as defined in subdivision (a) of Section 66610. 66664.1. "Commission" means the San Francisco Bay Conservation and Development Commission. 66664.2. "Delta" means the Sacramento-San Joaquin Delta, as described in Section 12220 of the Water Code. 66664.3. "Dredged material disposal" means the placement of material extracted by dredging. 66664.4. "Dredging" means the extraction of sand, mud, or other materials from San Francisco Bay, its tributaries, the delta, or coastal state waters. 66664.5. "Reuse" means the use of dredged material as a construction material or for some other beneficial purpose. 66664.6. "Upland disposal" means disposal of dredged material in areas not subject to tidal action.