The contents in this series describe the Silicon Valley Toxic Collation's (SVTC) part in developing a toxic gas model ordinance for Santa Clara County, which like the county's Model Hazardous Material Storage Ordinance (see Series IV) became a model for similar laws statewide and nationally. Beginning in 1985, SVTC activism came to focus increasingly on the dangers of gases used in Silicon Valley semiconductor (microelectronics) manufacturing, in part reflecting global anxieties raised by the disastrous Union Carbide plant explosion in Bhopal, India, in December of 1984. With the 1986 passage of California Assembly Bill 3777, requiring each county in the state to develop a toxic gas emergency plan, Ted Smith was appointed as a task force member for Santa Clara County alongside elected officials, city fire chiefs, and representatives of the area's electronics industry.