The Last Stand, the struggle to save the Ballona Wetlands.A film about the proposed Playa Vista Development Dreamworks and the Ballona Wetlands.Enviornmental issues and Wetlands.Ballona Wetlands and Playa Vista in Los Angeles California.

Friends of Ballona Wetlands

Environmental hazards posed by the Los Angeles Basin urban oilfields: an historical perspective of lessons learned. The environmental hazards posed to the urban development by oil and gas field operations are numerous. These hazards must be properly evaluated and mitigation measures implemented in order to protect public safety. These hazards are caused by gas migration along faults, subsidence caused by the fluid removal with consequent formation of faults and fractures, and by improperly maintained wellbores. The Los Angeles Basin, California, has over seventy oilfields that underlie extensive urban development. This setting has provided the authors an opportunity to study the long-term environment consequences of this mixed usage. These environmental hazards are not unique to the Los Angeles Basin, but relate to fundamental principles of gas migration, along faults and fracture zones, subsidence, and outgassing of oilfield gases that must be properly evaluated.