SACRAMENTO – Recently, California Governor Gavin Newsom signed into law Senate Bill 58 by Senator Steve Padilla (D-San Diego), which will direct the California Air Resources Board to update California’s air quality standard for hydrogen sulfide (H2S), a gas that is found at high concentrations in the Tijuana River Valley and the Salton Sea region. California’s hydrogen sulfide standard has not been updated since 1969. Just last week, the Agency for Toxic Substances and Disease Registry, for the first time found hydrogen sulfide in outdoor air near the Tijuana River reached levels that could harm people’s health.