Represents manufacturers, processors, transporters, distributors, sellers and others against claims based on the discharge, handling, transportation, disposal, storage and use of chemicals, materials and substances claimed to be toxic or hazardous to human health or the environment. Represents primary and excess insurers in defending against first party, third party and government agency claims for insurance coverage, property damage and personal injury arising out of environmental claims and damages, including indoor air quality litigation such as involving mold and mildew. Represents clients in defending against administrative and other proceedings brought by governmental agencies for alleged violations of federal, state and local laws and regulations.