William Koska - Special Counsel

Bill Koska is Special Counsel to Tyson & Mendes in the Environmental & Toxic Tort practice group. Mr. Koska has over 35 years’ legal experience, the last 20 of which has been devoted to environmental issues. Mr. Koska has handled a broad range of environmental matters in various courts and administrative boards, including the EPA. The litigation has included CERCLA, CEQA, Clean Air Act, Proposition 65, asbestos related cases, federal and state safe drinking water laws, and air quality issues for a variety of clients, both large and small, and construction contract issues.

Construction and Property Liability

Mr. Koska negotiates construction contracts for large companies nationwide. He has also represented developers, subcontractors and individuals in real estate matters involving environmental issues including asbestos, mold, boundary disputes, quiet title and partition issues.
As a result of the heavy rains of the late-1970s and early-1980s, Mr. Koska developed particular expertise in the area of flooding damage and landslide issues. As a consequence, he represented numerous developers, individual homeowners in spectacular hillside settings and beach front property owners who were involved in litigation from landslide/flooding damage.
Stemming from his land and water experience, he became involved in defending and prosecuting respectively, eminent domain and inverse condemnation actions on behalf of developers and individuals.

Toxic Tort

Mr. Koska’s background with toxic torts spans over 30 years. He first handled an aplastic anemia case involving inhalation of insecticides in 1977 and 1978. In the late-1970s and throughout the 1980s, Mr. Koska was involved in handling matters having to do with asbestosis, the early days of mold, inhalation of benzene, and various other products alleged to cause lung disorders, including leukemia and aplastic anemia.

Product Liability

Mr. Koska has handled product liability matters for a variety of clients, including Sunbeam Corporation, Northern Electric, Biddeford Blankets, Oster, Murray-Ohio, Caterpillar, International Harvester, Navistar, Ciba, McKesson Corporation, Johns-Manville, Sparkletts Drinking Water, Presley Homes, and many others. The cases have ranged from serious burn injuries to inhalation of asbestos, mold or cancer-causing chemicals, loss of body parts, and death.

Mr. Koska is AV Rated by Martindale-Hubbell and a member of the California Bar.

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