The challenges presented to the legal system by the use, contamination and transport of toxic chemicals is the focus of a daylong conference Saturday, Feb. 8, at the University of California, Davis, School of Law. "Toxics Law in Transition: Emerging Issues of the 1990s" is the title of the annual Environmental Law Conference sponsored by the law school and its Environmental Law Society. The keynote address will be delivered at noon in the campus' Silo restaurant by James M. Strock who, as Secretary for Environmental Protection, heads the newly created California Environmental Protection Agency. The title of his talk is "Cal-EPA in the 1990s." Sessions will be held at the law school and in Roessler Hall. Among the topics to be addressed are the causes of aging and cancer; the train accident in Dunsmuir, Calif., that spilled herbicide into the Sacramento River; the selection of sites for hazardous waste facilities; litigation over toxic waste; insurance coverage for environmental claims; and toxics in agricultural and drainage wastes. Speakers will include representatives from the U.S. Fish and Wildlife Service, the state Attorney General's Office, UC Berkeley, and private attorneys specializing in toxic issues. Admission to the conference costs $70 for attorneys, $35 for the general public and $5 for students. For more information, call (916) 756-8552 or (916) 758-6877.